With Discharge Of Cells Or Batteries Patents (Class 320/118)
  • Patent number: 9272626
    Abstract: The invention relates to a method and an electrical protection and monitoring device with an insulation monitoring instrument and a differential current monitoring instrument in an electric vehicle for safe driving operation and also for safe charging and energy recovery operation of the electric vehicle at a charging station. The invention further relates to a device for the safe charging and energy recovery operation of an electric vehicle at a charging station with electrical protection and monitoring devices.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: March 1, 2016
    Assignee: BENDER GMBH & CO. KG
    Inventors: Harald Sellner, Winfried Moell, Matthias Oehler, Wolfgang Hofheinz
  • Patent number: 9276493
    Abstract: A method and computer program product are provided for selecting switching cells for voltage contribution in a phase arm of a multilevel converter, a cell selecting control device for a multilevel converter and a multilevel converter. The cell selecting control device and multilevel converter includes a balancing control element that obtains a reference voltage for the phase arm, obtains a measurement of the current running through the phase arm and selects cells for contributing to an AC voltage output from the multilevel converter based on the reference voltage and the magnitude of the phase arm current.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: March 1, 2016
    Assignee: ABB Technology Ltd
    Inventor: Arman Hassanpoor
  • Patent number: 9263912
    Abstract: A computer-implemented method and information handling system manage a rate of decreasing full capacity of a rechargeable battery by using a projected/target rate of decreasing charge capacity for the battery. The method includes determining an actual rate of decreasing charge capacity of the battery, comparing the actual rate of decreasing charge capacity to the projected/target rate of decreasing charge capacity to determine whether the actual rate of decreasing charge capacity is greater than the projected rate of decreasing charge capacity, and if the actual rate of decreasing charge capacity is greater than the projected/target rate of decreasing charge capacity, modifying one or more variable parameters to slow down the actual rate of decreasing charge capacity of the battery such that the actual rate of decreasing charge capacity remains within a range of the projected/target rate of decreasing charge capacity, and charging and discharging the battery using the modified parameters.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: February 16, 2016
    Assignee: Dell Products, L.P.
    Inventors: Gary Joseph Verdun, Richard C. Thompson
  • Patent number: 9263776
    Abstract: A battery system having components with reduced maximum voltage tolerance requirements is disclosed. The battery system includes a battery pack with battery modules, and measuring units, which are connected to the battery modules. The measuring units have first analog front ends (AFEs) for monitoring the at least two battery modules. Each first AFE is configured to transmit information related to the monitored characteristic via an isolator to a processor configured to control the battery pack based on the transmitted information. The isolator receives the transmitted information from an AFE which is not connected to the battery module having the least electric potential or to the battery module having the greatest electric potential.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: February 16, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Han-Seok Yun, Tetsuya Okada, Jong-Woon Yang, Eui-Jeong Hwang
  • Patent number: 9255768
    Abstract: A method, apparatus and system for networking accessories to a firearm or weapon wherein the accessories are conductively powered from the rail and data is transferred between the accessories and the rail via conductive coupling. In one embodiment, a weapon is provided, the weapon having: an upper receiver; a lower receiver; a powered accessory mounted to a rail of the upper receiver; and an apparatus for conductively networking a microcontroller of the powered accessory to a microcontroller of the upper receiver and a microcontroller of the lower receiver, wherein the data is exclusively provided to the powered accessory from the rail.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: February 9, 2016
    Assignee: COLT CANADA CORPORATION
    Inventors: David Walter Compton, Brenton Stewart Teed
  • Patent number: 9257860
    Abstract: A method and battery management system performing cell balancing for a battery pack includes measuring a voltage of each of a plurality of battery cells in a battery pack, selecting one of the plurality of battery cells as a battery cell subject to cell balancing based on the measured voltages, selecting one of a plurality of resistors as a resistor on which cell balancing is performed, and outputting the voltage of the battery cell subject to cell balancing from a multiplexer that receives the voltage of each of the plurality of battery cells to the resistor on which cell balancing is performed.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: February 9, 2016
    Assignee: SAMSUNG SDI CO., LTD.
    Inventor: Meen-Suk Kim
  • Patent number: 9255769
    Abstract: A method, apparatus and system for networking and powering accessories to a firearm or weapon wherein the accessories are conductively powered from the rail via at least one pin having a tungsten carbide surface and data is transferred between the accessories and the rail via conductive coupling using the at least one pin. In one embodiment, a weapon is provided, the weapon having: an upper receiver; a lower receiver, the upper receiver being removably mounted to the lower receiver; a powered accessory removably mounted to a rail of the upper receiver; and an apparatus for conductively networking a microcontroller of the powered accessory to a microcontroller of the upper receiver and a microcontroller of the lower receiver.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: February 9, 2016
    Assignee: COLT CANADA CORPORATION
    Inventors: David Walter Compton, Brenton Stewart Teed
  • Patent number: 9252666
    Abstract: A charging device is configured with a power supply device and a DC-DC converter that have constant current voltage drooping type overcurrent protection characteristics and that are connected in series. A constant current value in a voltage drooping state of the DC-DC converter is lower than a constant current value in a voltage drooping state of the power supply device. The DC-DC converter is shifted to an operation state to supply a charging current of the constant current value to a charging target when a voltage value of a direct current voltage that is output from the power supply device reaches a maximum output voltage value or an approximate value thereof. Therefore, the charging target can be charged to a higher voltage even though a charging voltage of the charging target is low.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: February 2, 2016
    Assignee: TDK Corporation
    Inventor: Kouichi Sakita
  • Patent number: 9236753
    Abstract: A power source device includes an assembled battery having a plurality of secondary battery cells connected in series, and a plurality of discharge circuits connected in parallel with the secondary battery cells, respectively. A charge control circuit performs constant current charging to the assembled battery, and when voltages of one or a plurality of the secondary battery cells out of the plurality of secondary battery cells have reached a prescribed first voltage, drives the discharge circuits connected to the secondary battery cells whose voltage have reached the first voltage to discharge, and performs constant voltage charging to the relevant assemble battery.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: January 12, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Sekino, Takashi Sudo, Shinichiro Kosugi
  • Patent number: 9227524
    Abstract: An electric-powered vehicle is equipped with a power storage system having power storage devices each including a plurality of serially connected cells, and an integration control device. Contactors and current sensors are connected in series to the power storage devices. Control devices capable of managing statuses of the power storage devices are provided in addition to the power storage devices, the contactors, and the current sensors, thereby forming unit power storage modules. The unit power storage modules are connected in parallel. An electrical load whose driving is controlled by using powers of the power storage devices is provided. The integration control device is connected to the electrical load and the control devices of the unit power storage modules.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: January 5, 2016
    Assignee: SUZUKI MOTOR CORPORATION
    Inventor: Satoshi Ito
  • Patent number: 9231428
    Abstract: Disclosed herein is a low-power wireless charging apparatus including: a plurality of primary coils corresponding to a plurality of receivers, respectively; a plurality of drivers periodically and sequentially transmitting receiver detect signals; a sensing unit detecting a current and a voltage according to a magnetic field changed by one or more of the plurality of primary coils; a comparator comparing the detected current and voltage with pre-set values; a low-power auxiliary control unit generating a wake-up signal when one or more receivers are present; and a main control unit turned on upon receiving the wake-up signal, and controlled to generate a wireless power signal for charging a corresponding receiver and transmit, whereby unnecessary power consumption can be prevented and the burden of the main control unit can be lessened, thus increasing efficiency.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: January 5, 2016
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Young Seok Yoon, Eung Ju Kim
  • Patent number: 9231420
    Abstract: To provide a cell balance circuit and a cell balance apparatus with a low cost and with a compact size, and configured to equalize the charge voltages of rechargeable batteries when the rechargeable batteries are charged or discharged, while suppressing deterioration of the rechargeable batteries. A cell balance circuit AA includes a transformer T, a switch SW1 arranged so as to form a set with a rechargeable battery BT1, and a switch SW2 arranged so as to form a set with a rechargeable battery BT2. The transformer T includes a primary winding Wa arranged so as to form a set with the rechargeable battery BT1, and a secondary winding Wb arranged so as to form a set with the rechargeable battery BT2. When the rechargeable batteries BT1 and BT2 are charged or discharged, the cell balance circuit AA synchronously controls the switches SW1 and SW2.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: January 5, 2016
    Assignee: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
    Inventors: Hiroshi Jo, Kazuyuki Sashida
  • Patent number: 9225180
    Abstract: An electric storage device management apparatus is provided for monitoring an electric storage device assembly charged and discharged by a charger/discharger. The electric storage assembly includes a plurality of electric storage devices connected in series. The electric storage device management apparatus includes a voltmeter, a discharging circuit, and a controller. The voltmeter is configured to measure voltages of the electric storage devices respectively. The discharging circuit is configured to discharge the electric storage devices individually. The controller is configured to: determine whether a voltage of each electric storage device has reached a reference voltage during charging or discharging of the electric storage device assembly; and control the discharging circuit to discharge each electric storage device if the voltage of the electric storage device has reached the reference voltage.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: December 29, 2015
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Takeyuki Shiraishi
  • Patent number: 9219368
    Abstract: A charge controller includes a charge control circuit which controls a charging transistor; and a protection circuit that, when the secondary battery is over-discharged, turns off the first control switch element to block discharge current and when the secondary battery is overcharged, turns off the second control switch element to prevent the charge current from flowing. The charge control circuit includes a function of control for applying constant charge current through the charging transistor until the voltage of the secondary battery reaches a predetermined value and switching to control for applying charge current at a constant voltage after the voltage of the secondary battery reaches the predetermined value, and a terminal voltage on the positive electrode side and a terminal voltage on the negative electrode side of the secondary battery are supplied as monitoring voltage to the charge control circuit.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: December 22, 2015
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Gentaro Kurokawa, Daisuke Suzuki, Junji Takeshita
  • Patent number: 9214820
    Abstract: A battery system balancing control method for performing balancing control with aid of reference voltage information and battery system are provided. The battery system balancing control method includes: after a specific reference resistor of a plurality of reference resistors is installed into a specific battery module of a set of battery modules connected in series within a power supply device and the reference resistors are electrically connected in series, converting a total voltage of the set of battery modules into the reference voltage information, wherein each battery module of the set of battery modules includes at least one battery cell, and the reference voltage information includes a plurality of sets of reference voltage levels respectively corresponding to the reference resistors; and performing balancing control of the specific battery module according to a set of reference voltage levels corresponding to the specific reference resistor within the sets of reference voltage levels.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: December 15, 2015
    Inventor: Fu-Sheng Tsai
  • Patent number: 9209616
    Abstract: A power supply circuit for an on board energy source or storage device, and particularly for a super-capacitor storage unit having a plurality of interconnected super-capacitors and a first and a second terminal, includes a positive bus connecting the first terminal to a positive pole of a DC high voltage feeding source and a negative bus connecting the second terminal to a negative pole of the high voltage feeding source; and means for disconnecting the super-capacitor storage unit from the high voltage feeding source after detecting circulating fault currents due to insulation losses to ground, which include a high speed circuit breaker and a differential relay that are connected in series along the negative bus, between the second terminal and a grounding point, the differential relay generating an activation signal of the high speed circuit breaker in response to the circulation of a fault current.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: December 8, 2015
    Assignee: ALSTOM TRANSPORT SA
    Inventors: Massimo Rigoselli, Davide Mainardi, Davide Colombo
  • Patent number: 9203247
    Abstract: A power storage unit is provided which is able to facilitate recalibration and which is able to supply power even while recalibration is being performed. A method for correcting the capacity values of storage batteries, and a power storage system are also provided. In the power storage unit, a control unit turns ON a portion of the switches to connect a portion of the storage batteries to the charge and discharge path for correction, and corrects the capacity value of the portion of storage batteries by charging and discharging the portion while the other switches are turned OFF to disconnect the other storage batteries from the charge and discharge path.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: December 1, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takeshi Nakashima, Hayato Ikebe
  • Patent number: 9203118
    Abstract: A battery module that includes a plurality of battery cells having cell elements that are electrically coupled. Each cell includes a first capacitor plate pair having a first capacitor plate and a second capacitor plate at a first side of the cell element. Each cell also includes a second capacitor plate pair having a first capacitor plate and a second capacitor plate positioned at a second side of the cell element. The first capacitor plate at the second side of one cell element is capacitively coupled to the first capacitor plate at the first side of the cell element in an adjacent cell and the second capacitor plate at the second side of the one cell element is capacitively coupled to the second capacitor plate at the first side of the cell element in the adjacent cell so as to provide DC breaking.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: December 1, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Jochen Lenz, Jonas Hemsen, Peter Andres, Manfred Herrmann
  • Patent number: 9197080
    Abstract: An electric storage device management apparatus is provided for monitoring an electric storage device assembly including a plurality of electric storage devices connected in series. The apparatus includes a voltmeter, a discharging circuit, and a controller. The discharging circuit is configured to discharge the electric storage devices individually. The controller is configured to: determine whether a unit time variation in voltage of a first electric storage device has increased to a reference value and a unit time variation in voltage of a second electric storage device has increased to the reference value; measure an elapsed time period since the unit time variation of the first electric storage device has increased to the reference value; and control the discharging circuit to discharge the electric storage devices based on the elapsed time period such that capacities of the electric storage devices are equalized.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: November 24, 2015
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Takeyuki Shiraishi
  • Patent number: 9184600
    Abstract: A method for balancing a battery (C) comprising a plurality of branches (Ba, Bb, . . . , Bn) in parallel, each branch comprising at least two electrochemical cells in series (E1a, E2a, E3a, E1b, E2b, E3b), with an activatable electrical energy discharge or transfer device (Rb) being connected across the terminals of each electrochemical cell, comprises activating the electrical energy discharge or transfer devices connected across the terminals of the cells of the branch that includes the electrochemical cell having the lowest voltage, with the exception of the electrical energy discharge or transfer device associated with the electrochemical cell having the lowest voltage, and simultaneously deactivating the electrical energy discharge or transfer devices connected across the terminals of the cells of the branch or branches that do not include the electrochemical cell with the lowest voltage.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: November 10, 2015
    Assignee: SAFT
    Inventors: Serge Maloizel, Antoine Perot
  • Patent number: 9172258
    Abstract: A cell balancing circuit controlling balanced discharge of a plurality of battery cells, the cell balancing circuit having a balancing part sensing voltages of the battery cells, a controller responsive to an output of the balancing part to select one of the battery cells for discharge of the cell, and a resistance controller controlling discharge of the selected cell. The resistance controller includes at least one discharge circuit connected to the battery cells; and a plurality of resistors connected to output signal channels of the discharge circuit, the resistors being selectively connected in series according to a control signal of the controller to discharge the selected cell.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: October 27, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Joonwoo Song
  • Patent number: 9172255
    Abstract: A method for performing battery balancing control with aid of pluggable mechanism is provided. The method is applied to a power supply device. The method includes the steps of: providing a pluggable external module, wherein the pluggable external module includes a first connection port, and further includes a set of external balancing circuits corresponding to a set of battery cells of a specific battery module within the power supply device, respectively; and on a case of the specific battery module, providing a second connection port corresponding to the first connection port, allowing the pluggable external module to be coupled to the specific battery module with aid of the pluggable mechanism formed with the first connection port and the second connection port, in order to utilize the set of external balancing circuits to perform balancing operations on the set of battery cells. Associated apparatuses are further provided.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: October 27, 2015
    Assignee: Fu-Sheng Tsai
    Inventor: Fu-Sheng Tsai
  • Patent number: 9166399
    Abstract: A lithium battery protection circuit coupled to a lithium battery is provided. The lithium battery protection circuit includes an over-charge protection circuit and a logic circuit coupled to over-charge protection circuit. The logic circuit has a first logic output and a second logic output. The lithium battery protection circuit also includes a level shift circuit coupled to the logic circuit through the first logic output and the second logic output, and the level shift circuit is configured to convert the first logic output and the second logic output to high voltage levels in an over-charge protection state. Further, the lithium battery protection circuit includes a substrate switching circuit coupled to the level shift circuit and a power transistor coupled between a negative end of the lithium battery and an external circuit negative electrode.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: October 20, 2015
    Assignees: CSMC TECHNOLOGIES FAB1 CO., LTD., CSMC TECHNOLOGIES FAB2 CO., LTD.
    Inventor: Shunhui Lei
  • Patent number: 9160177
    Abstract: A semiconductor circuit includes a drive component that includes first switching elements connected to discharge switching elements and resistive elements; and a drawing component. The first switching elements interconnect, in accordance with a drive time of the discharge switching elements, drive current sources that supply charge to control signal lines and the control signal lines. The drawing component draws charge with draw current sources in accordance with a draw time in which the drawing component draws the charge supplied from the drive component.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: October 13, 2015
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Naoaki Sugimura
  • Patent number: 9160178
    Abstract: An energy storage system that includes a battery module including a plurality of battery cells, a battery management module connected to the battery cells through a plurality of first wires, detecting voltages of the battery cells and performing first cell balancing operations of the battery cells, and an external balancing module connected to the battery cells through a plurality of second wires, discharging the battery cells to a predetermined voltage and performing second cell balancing operations of the battery cells.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: October 13, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jaesoon Kim
  • Patent number: 9160191
    Abstract: In one aspect, a battery pack and a method of minimizing voltage deviations between battery cells within the battery pack is disclosed. The battery pack comprises a plurality of battery racks where each of the battery racks in turn comprises a plurality of battery cells. The battery pack also comprises a bidirectional inverter and a plurality of switch sets, where each of the switch sets are connected to one of the battery racks and is configured to electrically connect the bidirectional inverter and the battery racks. The battery pack additionally comprises a plurality of battery rack management systems, where each of the battery rack management systems is electrically connected to one of the battery racks and is configured to minimize voltage deviations between the battery cells. The battery rack management systems are also connected to a main battery management system configured to minimize voltage deviations between the battery racks.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: October 13, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jaesoon Kim
  • Patent number: 9148028
    Abstract: There is provided an apparatus for equalization of a battery pack that is composed of plural battery cells. The apparatus includes: a cell balancing device equalizing the voltages of the plural battery cells; a battery cell monitor monitoring the voltage and/or current of each battery cell; a correction voltage calculator calculating correction voltage for a subject battery cell that needs to be equalized, based on the monitored voltage and/or current of the subject battery cell, wherein the correction voltage depends on internal resistance of the subject battery cell; and a cell balancing controller determining the subject battery cell. The cell balancing controller corrects target voltage for equalization of the subject battery cell by the calculated correction voltage, and causes the cell balancing device to execute equalization of the subject battery cell so that the monitored voltage of the subject battery cell reaches the corrected target voltage.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: September 29, 2015
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masaaki Suzuki, Shinji Hirose
  • Patent number: 9142979
    Abstract: A balancing circuit for balancing battery units includes balancing modules. Each of the balancing modules includes a first and a second switch unit, and a first and a second inductive device, wherein the first inductive device is coupled to the second inductive device. The balancing modules include a first and a second balancing module, respectively coupled to a first and a second battery unit of the battery units. The first inductive device of the first balancing module takes away an excess energy of the first battery unit according to a switch state of the first switch unit of the first balancing module, and stores an inductive energy corresponding to the excess energy in the second balancing module. The second inductive device of the second balancing module provides the inductive energy for the second battery unit according to a switch state of the second switch unit of the second balancing module.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: September 22, 2015
    Assignee: Fu-Sheng Tsai
    Inventor: Fu-Sheng Tsai
  • Patent number: 9142987
    Abstract: A battery module and an arrangement including a number of battery modules connected in series are disclosed. An energy store has a positive and a negative connection. A boost converter has a first and a second converter output. The energy store is connected at the positive connection of the energy store to a first connection and at the negative connection of the energy store to a second connection. The first converter output is connected to a first compensation connection and the second converter output is connected to a second compensation connection. The converter is designed to draw energy from the energy store and to provide the energy to the converter outputs of the converter in the form of current.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: September 22, 2015
    Assignee: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Peter Gollob, Werner Roessler, Andreas Pechlaner
  • Patent number: 9128138
    Abstract: An electrical storage system includes: serially connected electrical storage blocks each including at least one electrical storage element; a voltage detection circuit connected to each electrical storage block via voltage detection lines; a protection circuit including an overvoltage protection element connected in parallel with each electrical storage block via the voltage detection lines and a first resistor connected in series with the overvoltage protection element; a discharge circuit connected in parallel with each overvoltage protection element via the voltage detection lines and in series with the first resistor, the discharge circuit including a second resistor having a larger resistance value than the first resistor; and a controller detecting an abnormality in the overvoltage protection elements by, while the electrical storage elements are not connected to the load, comparing a voltage of a discharging first electrical storage block with a voltage of a non-discharging second electrical storage bl
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: September 8, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takashi Nozawa
  • Patent number: 9106081
    Abstract: A secondary cell protection circuit configured to protect plural secondary cells connected in series is disclosed that includes plural switching parts configured to be connected in parallel with the secondary cells respectively; and a charge controller configured to turn on the switching part connected to the secondary cell of which cell voltage is greater than or equal to a return voltage, and to turn off the switching part when all cell voltages of the secondary cells become greater than or equal to the return voltage, when the secondary cells are being charged.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: August 11, 2015
    Assignee: RICOH ELECTRONIC DEVICES CO., LTD.
    Inventor: Kuniaki Arai
  • Patent number: 9102313
    Abstract: A method of operating a vehicle with hybrid-electric powertrain having an engine, a generator, and a battery is provided. A vehicle start input signal is received from an operator interface. A master controller initiates after receiving input from the operator interface. A secondary controller initiates after starting initiation of the master controller. A battery pack cell voltage balancing test is performed utilizing the master controller. Voltage within the battery pack cells is balanced based upon the balancing test. An isolation contactor closes after balancing the voltage within the battery pack. A signal from the master controller to the secondary controller to begin operation is generated after closing the isolation contactor. Alternately, voltage within the battery pack cells based upon results of the balancing test may take place dynamically during vehicle operation after closure of the isolation contactor.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: August 11, 2015
    Assignee: International Truck Intellectual Property Company, LLC
    Inventor: Jay E. Bissontz
  • Patent number: 9097770
    Abstract: An assembled battery management system has an assembled battery having a plurality of battery modules connected in series, wherein each of the battery modules has a plurality of battery cells connected in series, a connection member that connects the plurality of battery modules, and a battery voltage detection device that detects voltages of the battery cells. The battery voltage detection device has a monitoring section having a voltage detector that detects the voltages of the battery cells, wherein the monitoring section monitors the voltages of the battery cells based on a detection result of the voltage detector, and a plurality of voltage input terminals connected to the monitoring section. Each of the battery modules includes a plurality of voltage detection terminals connected to a positive electrode and a negative electrode of each of the modules as well as connecting points of the battery cells.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: August 4, 2015
    Assignee: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.
    Inventors: Naoki Kitahara, Tomohiro Sawayanagi, Yuichi Ikeda
  • Patent number: 9079581
    Abstract: Some vehicle maneuvers in a hybrid electric vehicle require a high discharge current from the battery. The capacity of a battery to supply a large discharge current depends on, among other things, the recent charge and discharge history. When the demand can be predicted in advance, the vehicle is operated to aggressively charge the battery during a time period close in time to the predicted event. As a result of this aggressive charging, the battery delivers more current to satisfy the power demand without allowing the terminal voltage to decrease below a minimum level than the battery would be capable of delivering at the same state of charge following a period of rest.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: July 14, 2015
    Assignee: Ford Global Technologies, LLC
    Inventor: Yonghua Li
  • Patent number: 9083188
    Abstract: An object of the present invention is to suppress damages to a drive circuit for a switching device due to a counter electromotive force of an inductor. A balance correcting apparatus includes: an inductor; a first switching device; a second switching device; a control signal generating unit that has a first reference voltage input terminal electrically connected to the other end of the first electricity storage cell and a second reference voltage input terminal electrically connected to the other end of the second electricity storage cell, and allows the first switching device and the second switching device to perform an ON-OFF operation alternately; and a voltage stabilizing circuit that keeps a voltage difference between the voltages of the first reference voltage input terminal and the second reference voltage input terminal to be within a predetermined range.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: July 14, 2015
    Assignee: EVTD Inc.
    Inventor: Fumiaki Nakao
  • Patent number: 9083187
    Abstract: An electric energy storage apparatus can generate an AC output in a low-loss and low-noise manner without using a DC-DC converter or an inverter. The electric energy storage apparatus comprises: an electric energy storage module group formed by connecting in series electric energy storage modules each comprising one or more electric energy storage elements; a balancing circuit electrically connected to the electric energy storage module group and configured to adjust a voltage to be applied to each of the electric energy storage modules; a first switch group comprising switches each in a path connecting a first terminal and a terminal of one of the series-connected electric energy storage modules; and a second switch group comprising switches each in a path connecting a second terminal and a terminal of one of the series-connected electric energy storage modules. The electric energy storage apparatus may perform a switch changeover in the switch groups.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: July 14, 2015
    Assignees: Japan Aerospace Exploration Agency, Japan Capacitor Industrial Co., LTD.
    Inventors: Kazushige Ito, Tsutomu Sekido, Masatoshi Uno, Akio Kukita
  • Patent number: 9048669
    Abstract: Provided are a charge equalization apparatus and method for a battery string connected in series, and more particularly, are a charge equalization apparatus and method that efficiently perform charge equalization while reducing entire complexity and volume and lowering production costs through a configuration that an individual battery included in a battery string shares a single voltage sensing module and a single charge equalizing module; a switch block of a two-stage structure forms a current path for measuring voltage of individual batteries included in the battery string, and at the same time, forms a charging or discharging path of a low-charged or over-charged battery among the battery strings; and a switch device having low withstand voltage is used.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: June 2, 2015
    Assignees: SK Innovation Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Jae Hwan Lim, Sang Hyun Park, Joong Hui Lee, Gun-Woo Moon, Hong-Sun Park, Chol-Ho Kim
  • Publication number: 20150145443
    Abstract: A device is introduced for cell-balancing a plurality of battery cells connected in series. The device includes a measuring device which is connectable to each of the battery cells and which is configured to generate a current which is proportional to a minimum cell voltage of all the cell voltages of the battery cells and to output the current to resistors which are connected in series. The device also contains a multiplicity of comparators which compare a cell voltage of an assigned battery cell to the minimum cell voltage which is replicated by the current which is proportional to the minimum cell voltage and the resistors. The comparators are configured to output a control signal, which is dependent on a result of the comparison, to an assigned discharging unit which allows a discharge current to flow from the respective battery cell as a function of the control signal.
    Type: Application
    Filed: September 27, 2011
    Publication date: May 28, 2015
    Inventor: Stefan Butzmann
  • Patent number: 9041344
    Abstract: A standby battery box for an electric cylinder is electrically connected to a control box for driving the electric cylinder and includes a charge-discharge device and a rechargeable battery. The charge-discharge device includes a protection unit, a power conversion unit, a voltage detection unit, a control unit, a discharge unit, a display unit, and a switch unit. The rechargeable battery is electrically connected to the charge-discharge device. When a startup switch of the switch unit is pressed, the charge-discharge device delivers the electricity of the rechargeable battery into the control box. When a shutoff switch of the switch unit is pressed, the charge-discharge device does not supply power, thereby protecting the standby battery box from being exhausted.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: May 26, 2015
    Assignee: TIMOTION TECHNOLOGY CO., LTD.
    Inventor: Chou-Hsin Wu
  • Publication number: 20150137764
    Abstract: The invention relates to an attenuation circuit for an energy storage device having one or more energy storage modules which are connected in series in one or more energy supply lines and have at least one energy storage cell and a coupling device which has a multiplicity of coupling elements and is designed to selectively switch or bridge the energy storage cell in the respective energy supply line.
    Type: Application
    Filed: May 13, 2013
    Publication date: May 21, 2015
    Inventor: Martin Kessler
  • Publication number: 20150137763
    Abstract: An electrical storage system includes electrical storage elements connected in series with each other and being charged or discharged; discharge circuits respectively connected in parallel with the electrical storage elements and discharging the corresponding electrical storage elements; and a controller controlling operations of the discharge circuits. The controller calculates a first SOC difference using a full charge capacity of each electrical storage element. The first SOC difference is a difference in SOC between the electrical storage elements and arises due to a difference in full charge capacity between the electrical storage elements. The controller calculates a second SOC difference that is a difference in SOC between the electrical storage elements at the moment the second SOC difference is calculated.
    Type: Application
    Filed: August 6, 2013
    Publication date: May 21, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takuro Kikuchi
  • Patent number: 9035622
    Abstract: A charging device with a battery management system which remains a rechargeable battery in full capacity during standby after being fully charged is disclosed. The charging device includes a charging module, electrically connected to a power source, for charging the rechargeable battery; a voltage detecting module, for detecting a voltage of the rechargeable battery; and a determination module, for instructing the charging module to charge the rechargeable battery with a supplementary current, when the voltage of the rechargeable battery detected by the voltage detecting module reduces to a first predetermined voltage, until the voltage of the rechargeable battery reaches a second predetermined voltage. A reduction of the voltage of the rechargeable battery is due to self-discharge of the rechargeable battery during standby after being fully charged.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: May 19, 2015
    Assignee: Go-Tech Energy Co. Ltd.
    Inventor: Pao-Sheng Huang
  • Publication number: 20150123617
    Abstract: A system, method, and apparatus for virtual cells for battery thermal management are disclosed. The disclosed method involves sensing, with at least one temperature sensor, a temperature of at least one battery cell in a battery pack. The method further involves sensing, with at least one current sensor, at least one current within the battery pack. Also, the method involves determining, with a battery thermal management system (BTMS) controller, if the temperature of any of the battery cells in the battery pack exceeds a temperature limit (TLimit). Further, the method involves activating, with the BTMS controller, at least one virtual cell to provide current or sink current for at least one of the battery cells in the battery pack that exceeds the temperature limit.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Applicant: THE BOEING COMPANY
    Inventors: Lijun Gao, Shengyi Liu, George M. Roe
  • Publication number: 20150123618
    Abstract: A system that balances voltages between battery banks. The system includes battery banks, including a first bank and a second bank, and a first capacitor. The system also includes a first set of switching devices which selectively couple first and second terminals of the first capacitor to first and second terminals of the first bank, and to first and second terminals of the second bank. The system includes a clocking circuit which generates clock signals with substantially non-overlapping first and second clock phases. This clocking circuit is configured so that during the first phase the first and second terminals of the first capacitor are coupled to the first and second terminals of the first bank, respectively, and during the second phase the first and second terminals of the first capacitor are coupled to the first and second terminals of the second bank, respectively.
    Type: Application
    Filed: January 12, 2015
    Publication date: May 7, 2015
    Applicant: APPLE INC.
    Inventors: William C. Athas, Thomas C. Greening
  • Patent number: 9024570
    Abstract: A charging device is provided. The charging device includes an input interface configured to receive electrical power from a power source and charge a removable energy storage device using the electrical power from the power source. The power source may be a solar panel. The charging device may include multiple input interfaces configured to receive electrical power at different voltages. The charging device may include an output interface configured to provide electrical power to an electrical device connected to the output interface, and the circuit may be configured to provide electrical power to the output interface from at least one of the removable energy storage device and the input interface.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: May 5, 2015
    Assignee: Goal Zero LLC
    Inventors: Robert Emmett Workman, Norm Krantz, Walker Ford, Joseph R. Atkin
  • Patent number: 9018907
    Abstract: A method and apparatus for ascertaining the maximum power obtainable from a traction storage-battery system that includes a plurality of storage-battery elements connected in series. The method provides for: determining at least one power indicator for each storage-battery element, and ascertaining a quantity of the smallest power indicators of all determined power indicators of all storage-battery elements. The quantity includes the smallest power indicator or a subgroup thereof of all power indicators of the storage-battery elements. A power-output limit for the quantity is provided, starting from the power indicators of the quantity. The maximum power obtainable from the traction storage-battery system is extrapolated based on the power-output limit and linked by the extrapolation and because of the series connection, to a power output of the at least one storage-battery element for which the quantity of the smallest power indicators was ascertained.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: April 28, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Andre Boehm
  • Patent number: 9013148
    Abstract: A lithium-ion battery includes two or more series-connected lithium-ion cells, a balancing lithium-ion cell, controllable switches with the same number as the lithium-ion cells, a drive module for the controllable switches, a voltage detection module for detecting a voltage at two ends of the lithium-ion cells, and a controller. The balancing lithium-ion cell is connected in parallel to the lithium-ion cells. The controllable switches control the turn on/off of the connection in parallel between the balancing lithium-ion cell and each of the lithium-ion cells independently. The drive module for the controllable switches and the voltage detection module are connected to the controller. A battery pack including the lithium-ion battery and a method for real-time charge/discharge equalizing of the lithium-ion battery are also provided.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: April 21, 2015
    Inventor: Yuebin Wu
  • Patent number: 9013147
    Abstract: A balancing circuit for balancing multiple cells in a battery. The cell balancing circuit includes a first shunt path connected in parallel to a first cell, a controller coupled to the first shunt path, a timer and a storage unit. The controller balances the cells and detects balance conditions of each cell. The timer measures pre-balance times and balance times for each cell. The storage unit stores the pre-balance times and balance times. The controller pre-balances the first cell by enabling the first shunt path for a first pre-balance time and balances the first cell by enabling the first shunt path for a first balance time if an unbalance condition of the first cell is detected by the controller, and updates the first pre-balance time for each balancing cycle based on the first pre-balance time and the first balance time from a previous balancing cycle.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: April 21, 2015
    Assignee: O2Micro, Inc.
    Inventor: Jingbo Ke
  • Patent number: 9013146
    Abstract: A secondary battery pack of the present invention includes a secondary battery block 3 in which a plurality of unit blocks 2 are connected in series; battery adjustment sections 5 that are each provided for each of the unit blocks 2 and have a function of monitoring the voltage of secondary batteries and a function of adjusting the balance; a charge switch 8; and a discharge switch 9. The secondary battery pack includes transmission sections 17 that receive information from the corresponding battery adjustment sections 5. The transmission sections are connected to the preceding or subsequent transmission sections and are so set that at least either information input from the preceding transmission sections or information input from the battery adjustment sections 5 is output to the subsequent transmission sections.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: April 21, 2015
    Assignee: NEC Energy Devices, Ltd.
    Inventors: Shin Suzuki, Hiroaki Ueno
  • Patent number: 9000726
    Abstract: Provided are a cell balance device for protecting a switch circuit from an overcurrent flow. The cell balance device includes: a plurality of electric accumulator connection terminals each connected to one of a node and two terminals of electric accumulators connected in series; a voltage hold device connection terminal connected to a voltage hold device; a plurality of first switch circuits provided between the plurality of electric accumulator connection terminals and the voltage hold device; a control circuit for controlling ON/OFF of the plurality of first switch circuits based on a synchronization signal; and an overcurrent detection circuit for detecting an overcurrent flowing through each of the plurality of first switch circuits.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: April 7, 2015
    Assignee: Seiko Instruments Inc.
    Inventors: Atsushi Sakurai, Hiroshi Saito