With Discharge Of Cells Or Batteries Patents (Class 320/118)
  • Patent number: 9595836
    Abstract: A power transfer circuit for achieving power transfer between stacked rechargeable battery cells is disclosed. The power transfer circuit includes an inductor, a first switch, a second switch and a controller. A loop of the rechargeable battery cell having higher power and the inductor is conducted so that the inductor stores power until the current flowing through the inductor meets the cutoff amount. Then, a loop of the rechargeable battery cell having lower power and the inductor is conducted so that the inductor releases the power saved in the inductor to the rechargeable battery cell having lower power until current flowing through the inductor changes direction. Therefore, balance between the rechargeable battery cells can be achieved.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: March 14, 2017
    Assignee: Hycon Technology Corp.
    Inventors: Chuan Sheng Wang, Po Yin Chao, Jui Chien Liu
  • Patent number: 9595847
    Abstract: An uninterrupted power supply system incorporates a plurality of lithium batteries as a back-up power supply to an AC power supply. In the event that there is an interruption in the AC power supply, a power output switch is automatically activated by a power control system to draw power from a lithium battery pack. In an embodiment, a battery pack is monitored by a battery management system that is coupled to battery monitoring modules couple to each battery. The battery management system may be configured to monitor the voltage and/or temperature of each battery. In another embodiment, an uninterrupted power supply system comprises a battery unit balancing system that maintains each battery within a battery unit below a threshold voltage value. A charging circuit and discharging circuit are used to maintain the batteries in a ready state of charge when not being used for the output power.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: March 14, 2017
    Assignee: Elite Power Solutions LLC
    Inventors: Yuan Dao, William Jeffrey Schlanger
  • Patent number: 9592738
    Abstract: Serial communication verification and safety control is disclosed. A multi-part system such as a battery management system can include distributed or subsidiary components for determining status of various parts of the system with the components in serial or point-to-point communication with a collective main controller. A safety controller can be implemented to passively be coupled to the serial or point-to-point communication between the main controller and the subsidiary units. The safety controller can monitor and verify the communication between the main controller and the subsidiary units and send a safety command or verification indicator in another line of communication separate from the communication bus between the main controller and the subsidiary units.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: March 14, 2017
    Assignee: FARADAY&FUTURE INC.
    Inventors: Anil Paryani, Omourtag Alexandrov Velev
  • Patent number: 9590432
    Abstract: A battery control device having a plurality of cell controllers which are provided corresponding to respective cell groups, are mutually connected in accordance with a predetermined communication order, and detect a state of each unit battery cell of a corresponding cell group, a control circuit which starts or stops a plurality of cell controllers, transmits a communication signal to the highest-order cell controller in a communication order among the plurality of cell controllers, and receives the communication signal from the lowest-order cell controller in the communication order among the plurality of cell controllers, and a first insulating element provided between the control circuit and the highest-order cell controller.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: March 7, 2017
    Assignee: Hitachi Automotive Systems, Inc.
    Inventors: Shinya Kato, Akihiro Machida, Tatsumi Yamauchi
  • Patent number: 9583957
    Abstract: Introduced are a cell balancing integrated circuit which may be realized including a small number of switches or diodes, an energy non-consumption type cell balancing system including the cell balancing integrated circuit, and an energy non-consumption type cell balancing method. The energy non-consumption type cell balancing system includes a battery pack, a cell balancing circuit, and a plurality of inductors and capacitors.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: February 28, 2017
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Ju Pyo Hong, Yong Goo Kim, Chol Ho Kim, Moon Young Kim, Jun Ho Kim
  • Patent number: 9583958
    Abstract: A voltage detecting device includes a voltage detecting circuit configured to detect voltages of a plurality of battery cells constituting a battery; a plurality of voltage detecting lines connecting the respective battery cells to the voltage detecting circuit; discharging circuits connecting the respective voltage detecting lines to a ground, and discharging the battery cells in an overcharged state; a power adjusting section adjusting power of the battery, and supplying the voltage detecting circuit with the adjusted power as driving power; the voltage detecting circuit detecting the voltages of the respective battery cells via the voltage detecting lines; and an overvoltage protecting circuit protecting the voltage detecting circuit from voltage equal to or higher than a predetermined threshold value, the voltage being generated in the voltage detecting lines, the discharging circuits, and the power adjusting section.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: February 28, 2017
    Assignee: KEIHIN CORPORATION
    Inventor: Kazuya Miyajima
  • Patent number: 9577293
    Abstract: In the present invention, a method and system for equalizing and matching lithium secondary batteries belong to the field of secondary batteries. A lithium secondary battery is divided into more than one grade according to the magnitude of a consumable current Ic, the number of grades is h, the lithium secondary battery is divided into grades corresponding to the consumable current according to the magnitude of a voltage difference ?V, a battery cell at a grade same as that of the consumable current and the voltage difference is selected for matching, so the range of the consumable current of the battery group can be controlled.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: February 21, 2017
    Assignee: GUANGZHOU FULLRIVER BATTERY NEW TECHNOLOGY CO., LTD.
    Inventors: Shengcheng Tang, Shihua Zeng, Dingbo Cheng, Xiaoping Zeng
  • Patent number: 9577442
    Abstract: Provided are a cell balance device with high cell balance performance and high cell balance speed and requiring no high voltage process, and a battery system including the cell balance devices. The cell balance device includes: three terminals to be connected to secondary batteries; one terminal to be connected to a voltage hold device; three switches provided between the three terminals and the one terminal; and a receiving terminal and a transmitting terminal for a synchronization signal. Alternatively, the cell balance device includes: four terminals to be connected to secondary batteries; two terminals to be connected to a voltage hold device; six switches provided between the four terminals and the two terminals; and a receiving terminal and a transmitting terminal for a synchronization signal. The battery system includes: a plurality of secondary batteries; a plurality of voltage hold devices; a plurality of cell balance devices; and a clock generation circuit.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: February 21, 2017
    Assignee: SII SEMICONDUCTOR CORPORATION
    Inventors: Atsushi Sakurai, Kazuaki Sano, Hiroshi Saito
  • Patent number: 9568930
    Abstract: According to a preferred embodiment of the invention, the system for managing a power system with a plurality of power components that includes power source components and power consumption components includes a central power bus, a plurality of adaptable connectors that each electrically couple to a power component and to the central power bus, and a control processor that receives the state of each power component from the respective adaptable connector and is configured to balance the voltage and current output from each power source component to provide a desired power to a power consumption component based on the received states.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: February 14, 2017
    Assignee: Motiv Power Systems, Inc.
    Inventors: Jim Michael Castelaz, Jessica Riley, Steven Diamond, Sam Chang, Vishal Parikh, Benson Tsai
  • Patent number: 9559529
    Abstract: Some embodiments of the present invention describe a battery including a plurality of master-less controllers. Each controller is operatively connected to a corresponding cell in a string of cells, and each controller is configured to bypass a fraction of current around the corresponding cell when the corresponding cell has a greater charge than one or more other cells in the string of cells.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: January 31, 2017
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Robert M Button, Marcelo C Gonzalez
  • Patent number: 9555815
    Abstract: According to one embodiment, an electric power conversion device includes an inverter which converts DC power into AC power and supplies the AC power to electric equipment of a railway vehicle, a battery capable of storing DC power, and a converter which converts the AC power into DC power and charges the battery. The battery supplies electric power to the inverter when the electric power is not supplied to the inverter from an external power source.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: January 31, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Michiaki Ishikawa, Hiroaki Otani
  • Patent number: 9559391
    Abstract: A method for adjusting a battery module including a plurality of connected cells is provided. Each of the connected cells is a nickel-metal hydride battery including a positive electrode containing an active material of which a main component is nickel hydroxide, a negative electrode containing a hydrogen adsorption alloy, and an electrolytic solution that is an alkali solution. The method includes over-discharging the battery module so that a state of charge reaches 0% in every one of the connected cells.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: January 31, 2017
    Assignee: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Yasushi Nakagiri, Daisuke Koba
  • Patent number: 9550425
    Abstract: An upper chamber and a lower chamber are provided in a housing of an electric storage device for vehicle deployment by a middle base plate. The lower chamber is sealed with respect to the upper chamber by the middle base plate. A battery module is disposed in the lower chamber. A control device, such as a cell controller, and electrical parts, such as a junction box and a service disconnect switch, are mounted in the upper chamber. Strong and weak current system wiring that connect the battery module and the electrical parts respectively penetrate strong and weak current system openings of the middle base plate, and are routed to the upper chamber. The openings, which are penetrated by the strong and the weak current system wiring, are each provided with a sealing member, and thus the lower chamber is sealed with respect to the upper chamber.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: January 24, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Tatsuo Sugawara
  • Patent number: 9537132
    Abstract: A battery includes a plurality of battery modules which are arranged in battery strings and are selectively activated or deactivated by driving. The battery module voltage of a respective battery module contributes to an output voltage of the corresponding battery string of the battery in the activated state. The battery further includes a switching converter topology which is coupled to the battery strings and is configured to selectively generate currents flowing into one or more of the battery strings.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: January 3, 2017
    Assignees: Robert Bosch GmbH, Samsung SDI Co., Ltd.
    Inventor: Stefan Butzmann
  • Patent number: 9537329
    Abstract: A battery management circuit maintains voltage balance during charging and discharging of a multi-cell, series connected battery stack. The circuit allows the entire energy content of the battery stack to be drained, as opposed to just monitoring the cells and turning off the discharge when the first cell voltage drops below a predetermined threshold. The circuit also provides high efficiency voltage balancing during charging of the battery stack conserving energy and keeping the temperature of the battery pack to a minimum.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: January 3, 2017
    Assignee: General Electronics Applications, Inc.
    Inventor: Joe Pernyeszi
  • Patent number: 9531038
    Abstract: A battery management unit includes a cell balancing module to perform cell balancing between a cells in a battery cell stack, and a controller operable to determine, during a first charge cycle, that the first cell has reached an over-voltage threshold before the second cell, to determine, during a discharge cycle, that the first cell has reached an under-voltage threshold before the second cell, to identify the first cell as having a lower capacity than the second cell based upon the determination that the first cell reached the over-voltage threshold before the second cell and upon the determination that the first cell reached the under-voltage threshold before the second cell, and to prevent, during another charge cycle, the cell balancing module from performing cell balancing on the first cell based upon the first cell being identified as having the lower capacity than the second cell.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: December 27, 2016
    Assignee: Dell Products, LP
    Inventors: Richard C. Thompson, Nikhil M. Vichare
  • Patent number: 9499067
    Abstract: Various techniques described herein relate to electric vehicle power management system for managing a plurality of battery modules in a battery pack. Such electric vehicle power management system may include a plurality of battery management systems corresponding to a plurality of battery modules, and an energy management system for managing the plurality of battery management systems. The energy management system and the plurality of battery management systems may adopt master-slave wireless communication, and may use a single wireless frequency channel or a plurality of assigned wireless frequency channels.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 22, 2016
    Assignee: THUNDER POWER HONG KONG LTD.
    Inventor: Yu-Ting Dai
  • Patent number: 9503012
    Abstract: A dynamic inductor system capable of storing usable electrical energy includes a rotor, a stator, a three-phase winding set, and a damping circuit. The damping circuit includes three freewheeling diode sets. Each of the three freewheeling diode sets has a first freewheeling diode and a second freewheeling diode. When the rotor rotates around the stator, the three-phase winding set generates a current passing through the first freewheeling diode of one of the freewheeling diode sets to charge the first damping capacitor, and a current passing through the second freewheeling diode of another one of the freewheeling diode sets to charge the second damping capacitor.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: November 22, 2016
    Inventors: Fu-Tzu Hsu, Chieh-Sen Tu
  • Patent number: 9496536
    Abstract: A backpack-type power supply includes: a plurality of cell units (52) each configured of a plurality of secondary battery cell (51); a case (12) configured to accommodate the cell units and having first and second contacts; and a harness (13) attached to the case, characterized by including; first connecting means (581, 571) for electrically connecting the first contact and a positive terminal of each cell unit to form a first electrical path therebetween; and second connecting means (572, 582) for electrically connecting the second contact and a negative terminal of each cell unit to form a second electrical path therebetween, each first electrical path and each second electrical path forming a total electrical path having a total resistance for each cell unit, the total resistance of each total electrical path being adjusted such that heat distribution is substantially uniform over the plurality of cell units in the case.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: November 15, 2016
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Takuya Yoshinari, Haruhisa Fujisawa, Yuji Kishima, Naoto Wakatabe
  • Patent number: 9496739
    Abstract: An apparatus balances a discharge in parallel battery configuration by having a battery pack (a) with a first battery system and a second battery system in parallel configuration, and a pulse width modulation device and (b) being interconnectable to a load. Each of the first and second battery systems has, in series and in order, a first voltage sensor, a resistor, a second voltage sensor, a string of battery cells, and a switching device. The first and second voltage sensor, in each battery system, measures an electrical current, used to calculate the voltage drop across each resistor. The voltage drop values for each battery system determine whether the pulse width modulation device alters or maintains the pulse width modulation applied to each battery system's switching device. By maintaining or altering the pulse width modulation applied to each switching device, the apparatus effectively balances the electrical current discharge from each battery system.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: November 15, 2016
    Assignee: Electrochem Solutions, Inc.
    Inventors: Brian Robert Peterson, Jon Carroll, Arden Phillip Johnson
  • Patent number: 9472960
    Abstract: A regulating device includes: a generating means for generating an output voltage from an input voltage; a plurality of first switches, respectively corresponding to the plural storage battery units connected in parallel, with each of said first switches interposed between the corresponding storage battery unit and the input side of the generating means; a plurality of second switches, respectively corresponding to the plural storage battery units, with each of said second switches interposed between the corresponding storage battery unit and the output side of the generating means; a detecting means for detecting the voltage of each of the plural storage battery units; and, a control means that, referring to the result of detection from the detecting means, identifies first storage battery units whose voltages are higher than the average value of voltage of the plural storage battery units and second storage battery units whose voltages are lower than the average value, from the plural storage battery units,
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: October 18, 2016
    Assignee: NEC Corporation
    Inventor: Yojiro Nomura
  • Patent number: 9465080
    Abstract: In accordance with one aspect of the present technique, a method is disclosed. The method includes identifying a first change in an excitation direction of a group of cells and determining a first set of characteristics of the group of cells corresponding to the first change. The method also includes identifying a second change in the excitation direction of the group of cells and determining a second set of characteristics of the group of cells corresponding to the second change. The second change in the excitation direction is opposite to the first change in the excitation direction. The method further includes determining a number of functional cells from the group of cells based on the first and the second set of characteristics.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: October 11, 2016
    Assignee: General Electric Company
    Inventors: Herman Lucas Norbert Wiegman, David Eugene James
  • Patent number: 9463710
    Abstract: A method and system of balancing battery cells are provided that use a data map that includes a balancing duty ratio based on an environment temperature of a battery and the number of balancing target-cells. The method includes measuring, by a temperature sensor, the environment temperature of a battery. In addition, a controller is configured to identify the number of the balancing target-cells and calculate a balancing duty ratio by substituting the environment temperature and the number of the balancing-target cells to the data map. A balancing time is deducted by the controller based on the calculated duty ratio and the corresponding battery cells are balanced by the controller with the calculated duty ratio for the balancing time.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: October 11, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Beom Gyu Kim
  • Patent number: 9459327
    Abstract: A voltage measurement device for measuring an output voltage of a battery assembly includes voltage addition sections that add a predetermined voltage value to output voltages of the cells, voltage detection sections that detect addition voltages which are output voltages of the voltage addition sections corresponding to the cells of the individual blocks, A/D converting sections that digitize analog voltage signals of the addition voltages detected by the voltage detection sections, and a control section that outputs voltage measurement request signals to the voltage detection sections respectively, and that acquires the addition voltages, subtracts the predetermined voltage value from the acquired addition voltages and provides voltage values after the subtractions, as the output voltages of the cells.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: October 4, 2016
    Assignee: YAZAKI CORPORATION
    Inventors: Satoshi Ishikawa, Tsutomu Saigo
  • Patent number: 9461494
    Abstract: An integration control device of a power storage system obtains pieces of status information of power storage devices from control devices of unit modules, compares the obtained pieces of status information with one another, and performs driving control of an electrical load based on a worst value of the pieces of status information.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: October 4, 2016
    Assignee: SUZUKI MOTOR CORPORATION
    Inventor: Satoshi Ito
  • Patent number: 9459322
    Abstract: A battery management system for a battery pack including a plurality of battery cells connected in series is provided. The battery management system includes a voltage divider, a plurality of switching units and a detection circuit. Each switching unit is corresponding to one of the battery cell and coupled between an anode of the corresponding battery cell and the voltage divider. When a control signal directs one of the switching units to turn on, the voltage divider divides a voltage difference transmitted from the one of the switching units to obtain a divided voltage signal, and transmits the divided voltage signal to the detection circuit, and the detection circuit detects the voltage difference according to the divided voltage signal, wherein the voltage difference is a voltage difference between an anode of the battery cell corresponding to the one of the switching units and a ground.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: October 4, 2016
    Assignee: VIA TECHNOLOGIES, INC.
    Inventor: Yi-shing Lin
  • Patent number: 9440554
    Abstract: Various techniques described herein relate to electric vehicle power management system for managing a plurality of battery modules in a battery pack. Such electric vehicle power management system may include a plurality of battery management systems corresponding to a plurality of battery modules, and an energy management system for managing the plurality of battery management systems. The energy management system and the plurality of battery management systems may adopt master-slave wireless communication, and may use a single wireless frequency channel or a plurality of assigned wireless frequency channels.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: September 13, 2016
    Assignee: THUNDER POWER HONG KONG LTD.
    Inventor: Yu-Ting Dai
  • Patent number: 9438048
    Abstract: Embodiments of the invention relate to a configuration of a multi-cell battery pack, with at least two cells electrically connected in a first parallel arrangement, which is connected in series to a second parallel arrangement of at least two additional cells. Each cell is locally connected to a sensor to sense and control the current of the cells in parallel or parallel-series combination in the multi-cell battery pack. A control module is in communication with each sensor, and associated instructions electrically remove or disable a cell from the multi-cell battery pack determined to be defective based on measurements from an associated sensor. Accordingly, the configuration measures and monitors a state of health of each cell in the multi-cell battery pack, the measurements including temperature, voltage and current sensing.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: September 6, 2016
    Assignee: Lenovo Enterprise Solutions (Singapore) Pte. Ltd.
    Inventors: Yakup Bulur, Richard J. Fishbune, Mark E. Maresh, Neil C. Swenson, Adam M. Wheeler
  • Patent number: 9413037
    Abstract: Provided is a cell capacity adjusting device for reducing fluctuations in state of charge (SOC) among cells of a battery pack 101, which is formed by connecting a plurality of cells 111-116 in series, during suspension of operation of electrically-powered equipment whose main power source is the battery pack 101. From among the plurality of cells 111-116, one or a plurality of cells having a voltage value equal to or higher than a cell capacity adjustment target voltage are selected. By the selected cells, an intermittent operation unit 105, which operates even during the suspension of operation of the electrically-powered equipment, is caused to perform an intermittent operation. Through repetition of the intermittent operation, voltage values of the selected cells are decreased. Thus, fluctuations in state of charge (SOC) among cells are reduced without unnecessarily discharging battery stored energy of the battery pack 101.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: August 9, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Shimamura, Toru Morita, Toshinori Matsui
  • Patent number: 9397509
    Abstract: A battery system having at least one battery string of more than two batteries connected in series, a charge equalization circuit, a relay matrix, and a balance controller. The charge equalization circuit is capable of equalizing the charge on any pair of series connected batteries in the at least one battery string. The relay matrix is operatively connected between the charge equalization circuit and the at least one battery string. The balance controller controls the relay matrix such that at least one to battery characteristic of at least one battery is sensed. Based on at least one sensed battery characteristic, the balance controller controls the relay matrix such that the charge equalization circuit is connected across at least one pair of series connected batteries in the at least one battery string.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: July 19, 2016
    Assignee: Alpha Technologies Inc.
    Inventors: James Joseph Heidenreich, Michael A. Haass, Thanh Quoc Le, Seth William Jennings
  • Patent number: 9381822
    Abstract: The electrical vehicle energy storage system permits the electric refueling of the electric vehicle just like an automobile would be refueled with gasoline at a gas station. Circuitry on board the vehicle accessible by the electric refueling station enables the determination of the energy content of the battery module or modules returned to the electric refueling station and the owner of the vehicle is given credit for the energy remaining in the battery module or modules which have been exchanged. Selective refueling may take place for given battery modules by removing them from the battery system and charging them at home, office or factory. A process for operating an electric vehicle is also disclosed and claimed.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: July 5, 2016
    Inventor: Karl F. Scheucher
  • Patent number: 9383415
    Abstract: A battery system comprises a battery including a plurality of battery cells and can be connected on an input side to a direct voltage intermediate circuit via at least one contactor, and a diagnostic device configured to diagnose a state of the at least one contactor. The battery system includes a monitoring circuit with a first branch in which the at least one contactor is arranged, and a second branch which is connected parallel thereto and in which a voltage source configured to generate a reference voltage is connected. The diagnostic device is arranged so as to evaluate a diagnostic current which is dependent on the reference voltage and flows in the monitoring circuit, and serves to determine a fault state of the at least one contactor based on a measured current value or a current profile of the diagnostic current.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: July 5, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Chrysanthos Tzivanopoulos
  • Patent number: 9379557
    Abstract: Provided are an apparatus and a method for battery balancing, and more particularly, to an apparatus and a method for battery balancing capable of implementing balancing between batteries which are connected in parallel.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: June 28, 2016
    Assignee: SK INNOVATION CO., LTD.
    Inventors: Woo Seok Song, Sang Hyuk Park
  • Patent number: 9368995
    Abstract: In a charging method for a lithium ion battery, constant current charging of the lithium ion battery is performed. The constant current charging includes at least three consecutive charging stages. The at least three consecutive charging stages include consecutive first, second, and third charging stages. The second charging stage has a set current value which is set lower than set current values of the first and third charging stages.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: June 14, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hajime Nishino, Mitsuhiro Takeno, Mikinari Shimada, Masato Fujikawa
  • Patent number: 9362758
    Abstract: A method for reducing a total loss of charge of battery cells by balancing states of charge includes checking boundary conditions as to whether a vehicle is in the park mode, whether a previous balancing step occurred in the past by at least a defined time period, whether a temperature of a balancing unit lies below an adjustable temperature limit and whether states of charge of all battery cells exceed a minimum state of charge. Additionally, the method includes determining a need for balancing such that a check is made as to whether a maximum difference of all states of charge of all battery cells is greater than an adjustable limit state of charge. Also the method includes, balancing by the balancing units if the first two steps of the method are affirmed. The balancing resistances are connected to respective battery cells for a predetermined time.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: June 7, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Jens Becker, Andre Boehm, Armin Steck, Christian Korn, Marianne Heizmann
  • Patent number: 9362779
    Abstract: A contactless charging system is made up of an electronic device and a contactless charger 200 that recharges the electronic device in a contactless manner. The electronic device transmits a full charge command indicating completion of charge. Upon receipt of the full charge command, the contactless charger shifts to a charge stop state in which charge of the electronic device is not performed. In the charge stop state, the contactless charger generates a load check signal for checking whether or not the electronic device is placed in the contactless charger in a rechargeable state, and transmits the signal. Further, the contactless charger also generates a charge restart check command for checking whether or not the electronic device requests recharge in a charge stop state, and transmits the command.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: June 7, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroyuki Takahashi, Hiroyuki Oku, Masanori Oshimi
  • Patent number: 9356451
    Abstract: A battery control circuit includes a voltage detection circuit for measuring voltages of electric cells, balancing circuits for balancing the voltages or SOCs of the electric cells, a signal input/output circuit for communicating with the outside, a power supply circuit having two modes: a normal mode and a low consumption mode, and a time management circuit. It receives a signal containing a period of time until the shift of the power supply circuit from the normal mode to the low consumption mode, and stores it in the time management circuit. If a command from the outside has not been sent for a predetermined period of time or when an operation stop command has been sent from the outside, the time management circuit causes the power supply circuit to continuously operate in the normal mode.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: May 31, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Youhei Kawahara, Ryouhei Nakao, Akihiko Kudo, Akihiko Emori, Kei Sakabe
  • Patent number: 9356469
    Abstract: According to one embodiment, a storage battery device includes a battery unit, a charging unit, a terminal, and a first circuit breaking unit. The battery unit includes a lithium ion battery and is connectable in parallel to other storage battery device that charges an external lithium ion battery. The charging unit is supplied with electric power from an external electric power source and charges the battery unit. The terminal is connectable to a wire connecting the other storage battery device with the battery unit. The first circuit breaking unit is connected between the battery unit and the terminal, and blocks an electric current flowing from the terminal to the battery unit.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: May 31, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuto Kuroda, Shinichiro Kosugi, Ryo Okabe, Manabu Murakami
  • Patent number: 9356452
    Abstract: A method for reducing a total charge loss of battery cells by equalizing states of charge includes making an initial check as to whether a temperature of at least one balancing unit lies below a preselectable temperature limit. Thereupon a check takes place as to whether a charging process of the battery cells has completed and the state of charge of the battery cells is >90%. A determination then follows as to whether a maximum state of charge difference between battery cells lies above an adjustable limit (DELTA_SoC).
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: May 31, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Armin Steck, Christian Korn, Marianne Heizmann, Andreas Gleiter
  • Patent number: 9343918
    Abstract: According to an example embodiment, a balancing apparatus includes: bi-directional switches that are respectively connected to cells that are connected in series, a controller configured to measure voltages of the cells, and a multiwinding transformed connected to the bi-directional switches. The bi-directional switches are configured to control a flow of an electric current bi-directionally. The controller is configured to select a number of the cells for balancing based on the measured voltages of the cells. The controller is configured to turn on and turn off the bi-directional switches that are connected to selected cells based on the measured voltages. The multi-winding transformer is configured to transfer energy between the cells when the bi-directional switches connected to the selected cells are turned on.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: May 17, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-jung Yun, Tae-jung Yeo, Jang-pyo Park
  • Patent number: 9341678
    Abstract: Fail-safe systems and design methodologies for large capacity battery systems are disclosed. The disclosed systems and methodologies serve to locate a faulty cell in a large capacity battery, such as a cell having an internal short circuit, determine whether the fault is evolving, and electrically isolate the faulty cell from the rest of the battery, preventing further electrical energy from feeding into the fault.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: May 17, 2016
    Assignee: Alliance for Sustainable Energy, LLC
    Inventors: Gi-Heon Kim, Kandler Smith, John Ireland, Ahmad A. Pesaran, Jeremy Neubauer
  • Patent number: 9331499
    Abstract: An energy transfer device for solar power systems operates to draw power from high-producing photovoltaic devices and apply that power across low-producing photovoltaic devices. An embodiment is a self-regulating energy exchanger using bidirectional DC-DC converters that operates to maintain uniform voltage across each series-connected photovoltaic device. An alternative embodiment is an energy exchanger that is controlled to maintain each of several series-connected photovoltaic devices at a maximum power point by drawing power from high-performing devices and applying that power across low-performing devices to provide uniform current among series-connected photovoltaic devices.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: May 3, 2016
    Assignee: Volterra Semiconductor LLC
    Inventors: Alexandr Ikriannikov, Anthony J. Stratakos
  • Patent number: 9331506
    Abstract: A battery recharger and heating apparatus, which is positioned within an insulated and weather proof chest, is disclosed. Electrical power is supplied to the apparatus to enable batteries to be charged in the insulated and weather proof chest and to remain in the insulated and weather proof chest until time of use. The interior of the insulated and weather proof chest is heated with a heating element such as a light bulb or heating pad.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: May 3, 2016
    Inventors: David E. Bieri, Nancy R. Bieri
  • Patent number: 9300155
    Abstract: In a voltage detection apparatus for a battery pack, a pair of electric paths are respectively connected to a pair of ends of a unit battery defined as one of battery cells configuring a respective cell group or one of serial connections of the battery cells. A voltage detecting unit detects voltage across terminals of the unit battery via the electric paths. An electrically conductive member connects: a positive terminal of one of two adjacent cell groups and a negative terminal of the other of the two adjacent cell groups. A bypass connects one of the electric paths connected to one of both ends of the conductive member; and the other of the pair connected to the other of the both ends. A bypassing unit disposed in the bypass allows current to flow in the bypass when voltage across both terminals of the conductive member has exceeded a specified voltage.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: March 29, 2016
    Assignee: DENSO CORPORATION
    Inventor: Tomomichi Mizoguchi
  • Patent number: 9298867
    Abstract: A system for simulating operation of an electrical device includes a printed circuit board assembly (PCBA) and a host machine. The PCBA includes a communications module, modular power switching modules (PSMs), and modular cells. Using an associated method, each PSM applies a predetermined pulse width modulation (PWM) duty cycle to AC input power to generate a calibrated DC output voltage. The cells, which are connected to a respective PSM, include a microcontroller. The host machine transmits a controller area network (CAN) cell state message to the communications module. The communications module converts the cell state messages into corresponding serial messages, and transmits the serial messages to the microprocessors of the cells to cause the cells to set their states to the desired simulation state. The cells generate the desired simulation state using PWM and transmit a cell status message back to the host machine via the communications module.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: March 29, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Hector A. Valerio, Nathaniel Jennings, Victor Lau, Nicole Gonzalez
  • Patent number: 9289893
    Abstract: An electric work apparatus having an electric load which is fed from a rechargeable battery pack. The battery pack is accommodated in a housing with the electric load being connected to the battery pack via an electric connecting cable. To provide cable guidance for the connecting cable that is ergonomically suitable for a user, cable ducts are molded in a housing wall of the backpack-type battery pack that is separate from the electric load. The cable duct opens in the edge of the housing as cable outlets.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: March 22, 2016
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Volker Reber, Joachim Kolb
  • Patent number: 9294026
    Abstract: A method of operating a power generation system includes operating a power generation system to generate an electric power output. At least a portion of the electric power output is dissipated in a flow battery by charging the flow battery using the portion of the electric power output and self-discharging the flow battery.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: March 22, 2016
    Assignee: United Technologies Corporation
    Inventor: Michael L. Perry
  • Patent number: 9278622
    Abstract: The battery management unit for a vehicle includes a charger mounted on the vehicle, configured to connect to an external power source and charge an assembled battery including a plurality of cells with electric power from the external power source; a memory that records which cell is a lowest cell having the lowest voltage when the battery is fully charged; and a cell-balancer that carries out cell-balancing on the voltage of the battery by discharging, when the charger is not charging the battery, the cells having a voltage higher than a current voltage of the lowest cell to the current value of the lowest cell. Thereby, it is possible to suppress an increase in dispersion of voltages and reduction in battery capacity.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: March 8, 2016
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Naoto Tagaya, Katsuyoshi Muramatsu
  • Patent number: 9276398
    Abstract: Provided is a protective semiconductor device detecting a disconnection reliably with secondary cells including for each cell: cell-connecting terminals; a first resistance detecting the voltage of each cell; a comparator detecting whether or not the voltage of each cell is in the reference voltage range; a series circuit composed of a second resistance and a first switch element, and including a control circuit controlling ON/OFF of the switch element, wherein the first switch element connects the second resistance to the connecting terminals by turning ON, while disconnecting it by turning OFF, the control circuit maintains a disconnection test signal ON, while turning ON the plurality of first switch elements sequentially and detecting the disconnection between the cells and the connecting terminals based on the output signal from the comparator corresponding to the first switch element turned ON.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 1, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masashi Oshima, Kuniaki Arai, Junichi Kanno
  • Patent number: RE45919
    Abstract: A control device includes a controller causing a plurality of cell blocks each configured of one or plurality of secondary battery cells and connected in series to be charged with a cell balance, and the controller includes a detector detecting a voltage of each of the cell blocks, an updater sequentially updating a maximum voltage of the detected voltage of each of the cell blocks, and a discharger discharging a cell block among the plurality of cell blocks, the cell block with a voltage range between the detected voltage and the updated maximum voltage within a discharge target voltage range defined in advance.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: March 8, 2016
    Assignee: Sony Corporation
    Inventors: Kazuharu Yanagihara, Akira Sanpei