Parallel Connected Batteries Patents (Class 320/126)
  • Patent number: 10355497
    Abstract: In general, techniques are disclosed for providing short circuit protection to a battery pack having a number of battery cells, at least some of which are connected in parallel. Short circuit protection is provided by using pairs of electronic switches (e.g., integrated circuits consisting of a pair of transistors designed as battery charge/discharge switches) serially connected between one terminal of a battery cell and a battery pack's common node—a position which is upstream of conventional battery pack fault controllers. The state of all such switches may be controlled by a control unit that is also upstream of a conventional fault controller. The combination of switch pairs and control unit can provide a battery pack with over current (short circuit) protection without the use of thermal cutoff devises. The described devices and systems can also provide over voltage, under voltage and over temperature protection.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: July 16, 2019
    Assignee: Apple Inc.
    Inventors: Karthik Kadirvel, Soundararajan Manthiri
  • Patent number: 10355320
    Abstract: The power storage device includes a battery group in which n series circuits C1 (wherein n represents an integer of 2 or greater) are connected in parallel and a battery controller controlling a switching device based on allowable charge/discharge power of the capacitor. The series circuit C1 includes a capacitor and the switching device which are connected in parallel. The battery controller controls the switching device to maximize the allowable charge/discharge power of the battery group.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: July 16, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Takeshi Fujita
  • Patent number: 10320216
    Abstract: A battery assembly includes a battery having first and second electrodes and an electrolyte. A controller is operatively connected to the battery. The controller includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for estimating a charge acceptance capability of the battery. Interaction of the electrolyte and at least one of the first and second electrodes produces a discharge product. The controller is programmed to quantize and track both accumulation and removal of the discharge product when at least one enabling condition is met. The controller is programmed to initialize a timer when the enabling condition is met and increment the timer by a calculation time interval (?t).
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: June 11, 2019
    Assignee: GM Global Technology Operations LLC.
    Inventors: Brian J. Koch, Robert S. Conell
  • Patent number: 10263299
    Abstract: An electrical system with replaceable batteries comprises an electrical system and a combined switch. The electrical system comprises a plurality of battery packs (1, 2, 3); all the battery packs are independently arranged each other; and an electric-quantity display device which is used for displaying the electric-quantity information indicating signals of the battery packs and a gear switch which is used for mutually switching the battery packs are arranged on the combined switch. Each battery pack comprises a battery (A1, A2, A3), a power switches (B1, B2, B3) and a battery management system (C1, C2, C3). The battery management systems receive and combine the output signals of the combined switches with the electric-quantity information indicating signals, thereby controlling whether the power switches are closed to provide power output or not.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: April 16, 2019
    Assignee: CHANGZHOU GLOBE CO., LTD.
    Inventors: Xian Zhuang, Yin Chen, Yi Liu, Lei Feng, Wenming Zhang
  • Patent number: 10218188
    Abstract: Systems and methods for charging a plurality of battery strings are provided. The individual string current of each of the individual battery strings can be monitored and used to regulate a charging output provided by the charger. For instance, the output voltage of charger can be controlled as part of a closed loop control system based on the individual string current of the battery string under the constraint of an individual string current limit and/or a charging voltage limit. As the charging voltage of the charger increases as a result of the closed loop control based on the individual string current, other battery strings can be coupled to the charger when the charging voltage provided by the charger exceeds a battery string voltage associated with the battery string.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: February 26, 2019
    Assignee: General Electric Company
    Inventors: Jiucai Zhang, Charles Clarence Hicks, Jr., Sam T. Liu, Robert A. Kaucic, Leng Mao
  • Patent number: 10218037
    Abstract: A method for regenerating a nickel metal hydride battery is provided. The nickel metal hydride battery includes a hydrogen absorbing alloy that serves as a negative electrode material and a safety valve that opens when an internal pressure of a battery case is greater than or equal to a predetermined pressure. The method includes connecting a plurality of nickel metal hydride batteries in parallel. Each nickel metal hydride battery is formed by integrating one or more battery cells. The method further includes overcharging the nickel metal hydride batteries by supplying current from a charge unit that is connected in parallel to the nickel metal hydride batteries. The method further includes, when each nickel metal hydride battery is overcharged, restoring a discharge reserve of a negative electrode by releasing at least some of an oxygen gas generated at a positive electrode out of the battery case through the safety valve.
    Type: Grant
    Filed: July 2, 2017
    Date of Patent: February 26, 2019
    Assignee: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Daisuke Koba, Yasushi Nakagiri, Tamotsu Fukuma, Shinichiro Ito
  • Patent number: 10177590
    Abstract: An electronic device is provided including: a display for displaying a UI element; a processor for processing an application; a Printed Board Assembly (PBA) having the processor mounted thereon, and arranged to be substantially parallel to the display; a main battery which supplies power to the electronic device, and is rechargeable and detachable; an auxiliary battery for supplying power to the electronic device; a first frame which houses the main battery, fixes the PBA, and is arranged to be substantially parallel to the display; a second frame for fixing the display and the first frame; and a cover coupled to the second frame, wherein the first frame includes a hole for housing the auxiliary battery, and the electronic device can receive power supplied from the auxiliary battery when power supply from the main battery is terminated.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: January 8, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Suk Kwak, Myung-Sik Kim, Young-Chul Ko, Chang-Yeong Kim, June-Hee Lee, So-Won Kim, Yang-Wook Kim
  • Patent number: 10110033
    Abstract: A metric is received for each battery sub-module in a plurality of battery sub-modules in order to obtain a plurality of metrics associated with the plurality of battery sub-modules. One or more battery sub-modules are selected from the plurality of battery sub-modules to electrically connect to a common power bus. The selected battery sub-modules are configured so that the selected battery sub-modules are electrically connected to the common power bus. The selected battery sub-modules that are electrically connected to the common power bus are charged.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: October 23, 2018
    Assignee: Kitty Hawk Corporation
    Inventors: Lewis Romeo Hom, Brian Robert Viele, Scott Furman
  • Patent number: 10024292
    Abstract: An electric starting system for an internal combustion engine is provided. The starting system includes a rechargeable battery including two voltage output terminals and an enable terminal, a battery receiver including a battery receptacle configured to receive the rechargeable battery, two voltage output terminals, and an enable terminal, a starter motor configured to start the internal combustion engine, and a continuous duty electrical load. The voltage output terminals of the lithium-ion battery and the battery receiver are configured to connect to complete a circuit between the rechargeable battery and the continuous duty electrical load when the rechargeable battery is attached to the battery receptacle.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: July 17, 2018
    Assignee: Briggs & Stratton Corporation
    Inventors: Robert Koenen, Matthew Markowski, Michael Meyer, James Nommensen
  • Patent number: 9985447
    Abstract: Provided is a battery device high in safety and ease of use, which has no difficulty in returning to a normal state after discharge overcurrent is detected. The battery device includes a first charge/discharge control device including a first charge/discharge control transistor, and a first charge/discharge control circuit configured to detect the voltage of a secondary battery to control charging and discharging; a second charge/discharge control device including a second charge/discharge control transistor connected to an external terminal via the first charge/discharge control transistor, and a second charge/discharge control circuit configured to detect the voltage of the secondary battery to control charging and discharging; and a switch circuit arranged between an overcurrent detection terminal of the second charge/discharge control circuit and the external terminal. The switch circuit is turned on with a discharge stopping signal of the second charge/discharge control circuit.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: May 29, 2018
    Assignee: ABLIC INC.
    Inventor: Fumihiko Maetani
  • Patent number: 9876376
    Abstract: A multiple battery charger is provided. The multiple battery charger includes an input unit configured to receive or block power from a power supply unit, an output unit including a plurality of output terminals, wherein the plurality of output terminals are commonly connected to the input unit and charge a plurality of batteries, and wherein each of the plurality of output terminals includes at least one of a plurality of second switches for a selective receipt of the power from the input unit and the plurality of output terminals are controlled in a time division multiple control manner, and a switching control unit configured to transmit a pulse width modulation signal to the input unit and the output unit so as to independently control the power applied to the plurality of batteries. Accordingly, a plurality of different kinds of batteries and the same kind of batteries in which charge states are different can be simultaneously charged.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: January 23, 2018
    Assignee: FOUNDATION OF SOONGSIL UNIVERSITY-INDUSTRY COOPERATION
    Inventors: Woojin Choi, Long Tran Van
  • Patent number: 9851412
    Abstract: A method for performance analysis and use management of a battery module is disclosed, wherein the battery module includes a multitude of interconnected battery cells and a battery management system with a plurality of dedicated analysis/control units (ACUs) that analyze performance of the battery module, the ACUs being assigned to individual battery cells and/or battery blocks of battery module. The method includes measuring current and voltage of one or more of an individual battery cell and a battery block; calculating a charge removal from the one or more of the individual battery cell and the battery block; calculating a loading charge of the one or more of the individual battery cell and the battery block; determining the remaining charge of the one or more of the individual battery cell and the battery block; and failure monitoring of the one or more of the individual battery cell and the battery block.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: December 26, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael Haag, Rainer K. Krause, Thorsten Muehge, Joerg Weyerhaeuser
  • Patent number: 9728984
    Abstract: An insulation rib is provided above a charging circuit and a plurality of heat radiation ribs are provided on the left side of the charging circuit. A space part is formed by the insulation rib. Little of the heat generated by the charging circuit is transferred to an upper sidewall portion of a case main body portion due to a heat insulation effect of the space part. Further, heat generated by the charging circuit is likely to be transferred to a left sidewall portion of the case main body portion due to a high heat dissipation effect of the heat radiation ribs. In this way, the generation of locally heated areas in the case main body portion can be reduced through balancing of the flow of heat generated by the charging circuit.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: August 8, 2017
    Assignee: MAKITA CORPORATION
    Inventor: Hironori Ogura
  • Patent number: 9694708
    Abstract: A battery assembly mounted on a hybrid electric vehicle is provided that prevents thermal runaway caused by overcharging. The battery assembly includes a battery having a plurality of cells and a protection switch disposed opposite to the battery. A relay is configured to turn on or off according to an operation of the protection switch and a PRA (power relay assembly) is connected between the relay and the battery.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: July 4, 2017
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yooncheol Jeon, Jeong Hun Seo, Yongjin Lee, Hae Kyu Lim, Jin Ho Park, Jun Seok Choi, Jun Ho Bang
  • Patent number: 9685796
    Abstract: A current equalizer is provided for first and second battery elements connected in parallel to supply a DC link. A first constant resistance carries a first current from the first battery element to the DC link. A first variable resistance is connected in parallel with the first constant resistance. A second constant resistance carries a second current from the second battery element to the DC link. A second variable resistance is connected in parallel with the second constant resistance. A balancer inversely adjusts the first and second variable resistances in response to relative magnitudes of the first and second currents. As a result, the total currents supplied from each battery element to the DC link are equalized because the effective total resistance in series with each battery element compensates for the difference in the internal battery resistances.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: June 20, 2017
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Eric Poirier
  • Patent number: 9627897
    Abstract: Systems and methods for charging a plurality of battery strings are provided. The individual string current of each of the individual battery strings can be monitored and used to regulate a charging output provided by the charger. For instance, the output voltage of charger can be controlled as part of a closed loop control system based on the individual string current of the battery string under the constraint of an individual string current limit and/or a charging voltage limit. As the charging voltage of the charger increases as a result of the closed loop control based on the individual string current, other battery strings can be coupled to the charger when the charging voltage provided by the charger exceeds a battery string voltage associated with the battery string.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: April 18, 2017
    Assignee: General Electric Company
    Inventors: Jiucai Zhang, Charles Clarence Hicks, Jr., Sam T. Liu, Robert A. Kaucic, Leng Mao
  • Patent number: 9564665
    Abstract: An electricity supply system comprises: a battery module, a control module, and a distribution box. The battery module includes at least two in-series modules, each comprising at least two battery groups connected in series. The control module is connected with the battery module and includes an IGBT module, a relay module, and a relay control module. The relay module includes a plurality of relays K. Each in-series module is connected to the relay module. The relay module is connected to the IGBT module. The relay control module is configured for controlling ON or OFF of each relay K so as to select an in-series module to work with the IGBT module. The distribution box is connected with the control module.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: February 7, 2017
    Assignees: BYD Company Limited, Shenzhen BYD Auto R&D Company Limited
    Inventors: Zhiwei Tong, Jianhua Zhu, Zhipei Lu, Qing Lai
  • Patent number: 9475482
    Abstract: A plug-in hybrid electric vehicle includes an internal combustion engine driving a pair of wheels on a first axle and a transmission drivingly connecting the internal combustion engine and the wheels on a first axle. An integrated starter-generator is mounted on the internal combustion engine crankshaft between said internal combustion engine and the transmission. The vehicle further includes an electric motor driving a pair of wheels on a first axle and a main battery pack connected to a further electric motor arranged to supply electric power for driving the wheels on a second axle. The electric drive means can comprise one electric motor driving the second axle via a differential, two electric motors each driving one half of the second axle or two electric wheel motors for the respective wheels on the second axle. An additional battery is connected to the integrated starter-generator for starting the engine.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: October 25, 2016
    Assignee: V2 PLUG-IN HYBRID VEHICLE PARTNERSHIP HANDELSBOLAG
    Inventors: Klas Niste, Robert Eriksson, Patrik Larsson
  • Patent number: 9446671
    Abstract: An electrical storage system includes an electrical storage device, a motor, a system main relay, a first charging line, a charger, a first charging relay, a second charging line, an inlet, a second charging relay and a controller. The controller is configured to control a energizing state and a non-energizing state of the system main relay, the first charging relay and the second charging relay. The controller is configured to cause the first charging relay to the non-energizing state when the second charging relay in the energizing state is subjected to adhesion.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: September 20, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Junta Izumi
  • Patent number: 9444268
    Abstract: Remaining capacity calculation section (110) calculates remaining capacities for each of cells (300-1) and (300-2) connected in parallel with each other, and control section (130) discharges one of cells (300-1) and (300-2) having priority until the remaining capacity of that cell becomes equal to a second threshold value stored in storage section (120), if the remaining capacity of the one of the cells calculated by remaining capacity calculation section (110) is equal to a first threshold value stored in storage section (120).
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: September 13, 2016
    Assignees: NEC ENERGY DEVICES, LTD., NEC CORPORATION
    Inventors: Shin Suzuki, Yoichiro Tashiro
  • Patent number: 9431824
    Abstract: The power supply system includes a first DC power source, a second DC power source, and a power converter having a plurality of switching elements and reactors. The power converter is configured to be switchable, by the control of the plurality of switching elements, between a parallel connection mode in which DC voltage conversion is executed with the DC power sources connected in parallel with a power line and a series connection mode in which DC voltage conversion is executed with the DC power sources connected in series with the power line. Each of the switching elements is arranged to be included both in a power conversion path between the first DC power source and the power line PL and a power conversion path between the second DC power source and the power line.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: August 30, 2016
    Assignees: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masanori Ishigaki, Shuji Tomura, Takaji Umeno, Masaki Okamura, Daigo Nobe, Yoshiyuki Nakamura
  • Patent number: 9397519
    Abstract: A method of operating a battery charger electrically connected with a power distribution circuit having a power line and return line includes determining at least one of a temperature and a change in temperature of at least one of the power line and return line, and controlling a current through the power line based on the at least one of temperature and change in temperature.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: July 19, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Allan Roy Gale, Michael W. Degner, Michael Alan Tamor, Larry Dean Elie
  • Patent number: 9391465
    Abstract: In an electrical storage device management system, a control part monitors the temperatures of electrical storage cells. In electrical storage systems that are in a charging/discharging operating state, if the temperature of any of the electrical storage cells has reached a first threshold temperature, the control part switches an electrical storage system that includes this electrical storage cell to a non-charging/discharging state. The control part also switches one of the electrical storage systems that is in the non-charging/discharging state, to the charging/discharging operating state.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: July 12, 2016
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventor: Masato Hanada
  • Patent number: 9385545
    Abstract: An electric storage device protection apparatus includes switches arranged between an electric device and an electric storage device and connected in parallel to each other, a rectifier component connected in series to one of the switches between a pair of common connection points of the switches, and a controller. The controller is configured to make the switch connected to the rectifier component to be in the open state when determining that a voltage of the electric storage device is within a reference range, and make the switch that is connected to the rectifier component to be in the closed state and make another one of the switches to be in the open state when determining that a voltage of the electric storage device becomes outside the reference range due to a current flowing in a reverse direction of the rectifier component.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: July 5, 2016
    Assignee: GS YUASA INTERNATIONAL LTD
    Inventors: Takeshi Nakamoto, Yoshihiko Mizuta, Takeyuki Shiraishi
  • Patent number: 9352644
    Abstract: A vehicle has a motor and an engine each serving as a driving source for running the vehicle, and assembled batteries each capable of supplying an electric power to the motor. The assembled batteries include a high-power assembled battery and a high-capacity assembled battery. The high-power assembled battery is capable of charge and discharge with a current relatively larger than that in the high-capacity assembled battery, and the high-capacity assembled battery has an energy capacity relatively larger than that of the high-power assembled battery. In running of the vehicle using an output from the motor with the engine stopped, the high-capacity assembled battery supplies a more electric power to the motor than that in the high-power assembled battery. The high-power assembled battery is placed in a riding space where a passenger rides, and the high-capacity assembled battery is placed in a luggage space different from the riding space.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: May 31, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Kimura, Akihiro Sato
  • Patent number: 9272625
    Abstract: An electrical power supply system for powering an electric load of a vehicle includes a main battery, a support battery and a battery control module. The battery control module includes a first terminal for connection to the main battery, a second terminal for connection to the support battery and a third terminal for connecting to the electric load. A switch is arranged between said second terminal and said third terminal. The battery control module is arranged to connect the support battery to the load by turning the switch conducting in case the voltage at the third terminal drops below a predetermined voltage. The system provides the automatic activation of a support energy source when the output voltage falls below a specified voltage threshold. The support battery supports the main battery when needed or acts as a redundant power source.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: March 1, 2016
    Assignee: Volvo Car Corporation
    Inventors: Mikael Sonesson, Torbjoern Larsson, Jonas Dahlloef, Peter Gunberg, Daniel Midholm
  • Patent number: 9257863
    Abstract: A charge and discharge control device includes: a coordination unit which generates coordination information for calculating an output value which each storage battery is caused to output, based on a bus voltage value and a target voltage value; a string output calculating unit which calculates, based on the coordination information, an output target value indicating the output value which the storage battery is caused to output to maintain the bus voltage value at the target voltage value; and a control unit which causes, among the storage batteries, a storage battery corresponding to the calculated output target value to output an output having a magnitude indicated by the calculated output target value, wherein the coordination unit generates the coordination information to avoid simultaneous presence of a storage battery that outputs an output in a charge direction and a storage battery that outputs an output in a discharge direction.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 9, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takashi Iida, Kohji Matsumura, Kazufumi Nishikawa
  • Patent number: 9205756
    Abstract: The controller calculates a first limit based on received information about the battery packs and the schedule for charging and discharging plan, and supplies the first limit which serves as a control command to a master battery management unit (BMU), a master BMU receives the first limit. The master BMU sets and distributes the second limit to each one of local battery management function blocks in the battery packs. As a result, each BMU receives the second limit respectively. Then, the each BMU supplies the third limit to a bidirectional power source circuit, respectively, based on failure information FAIL and capacity information SOC of the battery in the battery pack.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: December 8, 2015
    Assignee: DENSO CORPORATION
    Inventor: Akira Ito
  • Patent number: 9153914
    Abstract: A power device including a power circuit assembly, a first plug assembly, and a second plug assembly is described herein. The first plug assembly is coupled to the power circuit assembly for transmitting power from a power source to the power circuit assembly at a first voltage. The second plug assembly is coupled to the power circuit assembly for controllably transmitting power from the power source to the power circuit assembly at a second voltage and at a third voltage.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 6, 2015
    Assignee: ADVANCED CHARGING TECHNOLOGIES, LLC
    Inventors: W. J. “Jim” Weaver, Jr., Michael H. Freeman, Mitchael C. Freeman, Robert Dieter, Brian Santee, Roy Matthew Milner, II
  • Patent number: 9054536
    Abstract: A system for charging and discharging batteries includes a battery module, an adapter, a charger, and an electronic device electrically connected to the charger and the battery module. The battery module includes a first cell battery, a second cell battery, and a first switch electrically connected to the first and second battery cells. The adapter receives an AC voltage, and converts the AC voltage to a DC voltage. The charger receives the DC voltage, and charges the battery module accordingly. The electronic device is electrically connected to the charger and the battery module. When the charger charges the battery module, the first switch is switched to electrically connect the first and second battery cells with the charger in series. When the battery module discharges to the electronic device, the first switch is switched to electrically connect the first and second battery cells with the electronic device in parallel.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: June 9, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Hung-Yi Wang, Hsiang-Pin Tseng, Min-Wei Lee
  • Patent number: 9035614
    Abstract: A method for charging an assembled battery including series circuits connected in parallel, each of the series circuits including series-connected lead storage batteries, using a single charger is provided. The method includes: a first step of obtaining a first index value, corresponding to a resistance value of a first series circuit with a correlative relationship, the first series circuit having a lowest resistance value; a second step of obtaining a second index value corresponding to a resistance value of a second series circuit with a correlative relationship, the second series circuit having a highest resistance value; a third step of performing normal charging, in which the assembled battery is charged with a first amount of charge corresponding to the first index value; and a fourth step of performing refresh charging, in which the assembled battery is charged with a second amount of charge corresponding to the second index value.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: May 19, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomoya Kikuchi, Tomohisa Suzuki, Yasuyuki Yoshihara
  • Patent number: 9035615
    Abstract: An energy management system has an integration control portion that performs control to charge a storage battery with a power of such an amount that a power consumption including a power supplied by a supply portion is equal to or smaller than a target value indicated by power consumption target information recorded in a recording portion when a power consumption detected by a detection portion is smaller than the target value, and to supply a building with a power with which the storage battery is charged such that the power consumption including the power supplied by the supply portion coincides in amount with a power equal to or smaller than the target value indicated by the power consumption target information recorded in the recording portion when the power consumption detected by the detection portion is larger than the target value.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: May 19, 2015
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYOTA HOUSING CORPORATION
    Inventors: Hiromi Tonegawa, Tetsuhiro Ishikawa, Shinji Ichikawa, Daisuke Ishii, Katsutoshi Murawaka
  • Patent number: 9035613
    Abstract: A circuit for connecting a first accumulator line to a second accumulator line from an accumulator is described. The accumulator is provided for charging and discharging electrical energy via the accumulator lines. Each accumulator line has a positive pole and a negative pole for charging and discharging electrical energy. The circuit has at least one first switch which is provided for disconnecting and connecting two similar poles of the two accumulator lines.
    Type: Grant
    Filed: July 5, 2010
    Date of Patent: May 19, 2015
    Assignee: ROBERT BOSCH GmbH
    Inventor: Stefan Butzmann
  • Patent number: 9030167
    Abstract: A power source apparatus includes first equalizing circuits to control remaining charge capacity variation among a plurality of battery units, and second equalizing circuits to control remaining charge capacity variation among all the series-connected battery packs that make up each battery unit. A first equalizing circuit connects each battery unit with an output line OL through a first series circuit made up of a first limiting resistor and first equalizing switch. Remaining charge capacity variation is equalized among all the battery units by the first equalizing circuits, and remaining charge capacity variation between battery packs in each battery unit is controlled by the second equalizing circuits.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: May 12, 2015
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masao Yamaguchi, Mikitaka Tamai, Osamu Kaite, Shinichi Itagaki, Masayuki Kobayashi, Hiroyoshi Yamamoto
  • 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: 9018909
    Abstract: A battery pack includes a first battery and a second battery connected electrically in parallel and performing charge and discharge, and a heater generating heat. The first battery can perform charge and discharge with a current larger than that of the second battery. The second battery has an electric storage capacity larger than that of the first battery. The heater is placed at a position closer to the first battery than the second battery.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: April 28, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kenji Kimura
  • Patent number: 9007025
    Abstract: Systems and methods for simultaneously charging two or more cell strings of a hybrid battery system from a shared input current path to the battery system. An input common charging current may be limited to the smallest maximum allowable charging current value of multiple battery cell strings of a hybrid battery system, or may be provided as the greater of the maximum allowable charging currents of multiple battery cell strings of a hybrid battery system with current supplied to individual cell strings that require less than the maximum current being individually controlled so as not to exceed the maximum allowable current for each of the individual cell strings of the hybrid battery system.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: April 14, 2015
    Assignee: Dell Products, L.P.
    Inventors: Bruce A. Miller, Fu-Sheng Tsai
  • Patent number: 8994212
    Abstract: A control device of an electric power supply apparatus controls a voltage applied to an inverter to fall within a voltage range between a first voltage that is the voltage of one of a first electric power supply and a second electric power supply and a second voltage that is the sum of the voltage of the first electric power supply and the voltage of the second electric power supply, by alternately switching between a series state in which a current loop that connects the first electric power supply, the second electric power supply, and a reactor in series with the inverter is formed, and a parallel state in which the first electric power supply and the second electric power supply are connected in parallel with the inverter as an electric load.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: March 31, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Manabu Kurokawa, Toshihiro Sone
  • Patent number: 8994340
    Abstract: A method and system for determining the temperature of cells in a battery pack, without using temperature sensors, by measuring the impedance of the cells and using the impedance to determine the temperature. An AC voltage signal is applied to the battery pack, and a time sample of voltage and current data is obtained. The voltage and current data is narrowed down to a simultaneous time window of interest, and a fast fourier transformation is performed on the windowed voltage and current data to identify voltage and current magnitudes at one or more specific frequencies. The voltage and current magnitudes are used to determine the impedance at the one or more frequencies. Finally, the impedance is used to determine the temperature of the cell or cells using a look-up table, where the impedance, the frequency, and a state of charge are used as input parameters for the look-up.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: March 31, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Roland Matthe, Hans-Joachim Humbert, Konrad Kowalczyk
  • Publication number: 20150084594
    Abstract: A battery power system includes a number of battery modules. Each battery module includes a number of battery cells, a management circuit positioned at a first side of the battery module, and a heat source positioned at a second side of the battery module and opposite to the first side. The management circuit is electrically connected to and manages charging and discharging of the cells of the corresponding battery module. The heat source is thermally coupled to the cells of the corresponding battery module and dissipates heat generated by the cells of the corresponding battery module. The battery modules are arranged in two lines, and the first sides of the battery modules in one line are positioned adjacent to and face the first sides of the battery modules in another line.
    Type: Application
    Filed: October 31, 2013
    Publication date: March 26, 2015
    Applicant: UER TECHNOLOGY CORPORATION
    Inventors: RAY-TANG SUN, TSUNG-HSIEN CHUANG, NIEN-TIEN CHENG, CHIEN-LUNG CHEN
  • Publication number: 20150077061
    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: Application
    Filed: February 13, 2013
    Publication date: March 19, 2015
    Inventor: Yojiro Nomura
  • Patent number: 8976498
    Abstract: A field device for determining and/or monitoring a physical or chemical, process variable in automation technology. The field device comprises: at least one microcontroller; a supply unit of limited capacity as primary voltage supply; and a detection circuit, which signals the microcontroller of a failure of the supply unit so early by means of a detection signal that sufficient time is available to take suitable safety measures, in order to avoid loss of data. The detection circuit is so embodied that a reference voltage required for detection of a voltage decline of the supply unit has an almost constant offset from the supply voltage of the supply unit and adjusts to the supply voltage, until the detection circuit, in the case of an abrupt subceeding of the reference voltage, or an abrupt voltage decline of the supply voltage, sends a detection signal to the microcontroller.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: March 10, 2015
    Assignee: Endress + Hauser Process Solutions AG
    Inventor: Marc Fiedler
  • Patent number: 8963501
    Abstract: A voltage equalization device of a power storage device provided with battery packs in which a plurality of secondary cells are connected, power converters provided in association with the battery packs, and controllers that control the power converters, and in which the battery packs are connected in parallel via the individual power converters includes a decision portion and a voltage-adjusting portion. The decision portion obtains battery-pack information regarding the states of charge/discharge of the individual battery packs and decides, for each battery pack, whether or not to perform voltage adjustment on the basis of the battery-pack information. When the decision portion decides that the voltage adjustment is to be performed, the voltage-adjusting portion generates offset instructions for adjusting the states of charge/discharge and outputs the offset instructions to the controllers of the power converters associated with the battery packs.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: February 24, 2015
    Assignees: Mitsubishi Heavy Industries, Ltd., Kyushu Electric Power Co., Inc
    Inventors: Tetsuro Shigemizu, Takehiko Nishida, Katsuo Hashizaki, Masaaki Minami, Keiichiro Tanaka, Kazuyuki Adachi, Shinji Murakami, Kouji Kurayama, Hirofumi Fujita
  • Publication number: 20150048795
    Abstract: A charge control apparatus which includes charger 120 whose output voltage is variable and to which batteries 101A and 101B are connected in parallel, further includes: current detectors 105A and 105B that detect charging currents flowing to batteries 101A and 101B, and output the detected current values; maximum value detector 130 that selects the maximum value from among the output values of current detectors 105A and 105B, and outputs the selected value; and controller 140 that controls the output voltage of charger 120 such that the output value of maximum value detector 130 matches a setting value.
    Type: Application
    Filed: March 29, 2013
    Publication date: February 19, 2015
    Applicant: NEC ENERGY DEVICES, LTD.
    Inventor: Yasushi Hashimoto
  • Publication number: 20150042284
    Abstract: A control apparatus for a vehicle battery having a first battery and a second battery connected in parallel is provided. Each of the first and second batteries is provided with a relay operating between an allowing state in which charge from the power supply section is allowed and in a non-allowing state in which the charge is not allowed. The control apparatus includes a controller performing charge processing in which, when a voltage difference exists between the first battery and the second battery, the relay provided for one of the batteries having a lower voltage is set at the allowing state to charge only the one of the batteries, and when the charge causes the voltage of the one of the batteries to be equal to the voltage of the other of the batteries, both the relays provided for the one and the other of the batteries are set at the allowing state to charge the one and the other of the batteries.
    Type: Application
    Filed: September 21, 2011
    Publication date: February 12, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takashi Murata
  • Publication number: 20150035492
    Abstract: An adjusting device that is connected to a load and to a plurality of storage battery units that are connected together in parallel and that adjusts voltage differences among the plurality of storage battery units includes: for each of the storage battery units, a switch that is provided between a storage battery unit and the load that is turned ON during detection intervals for detecting current from the storage battery unit, a detection means that detects the current supplied from each of the storage battery units during the detection interval, and an adjusting means that, based on the detection results of the detection means, controls the ON/OFF states of switches during the adjustment intervals for adjusting voltage differences such that the voltage differences among the plurality of storage battery units are decreased.
    Type: Application
    Filed: January 24, 2013
    Publication date: February 5, 2015
    Inventor: Youjirou Nomura
  • Publication number: 20150022140
    Abstract: An electricity storage system comprising: a plurality of cartridges connected together in parallel, each cartridge comprising a plurality of cells connected together, and a circuit for preventing cross current, which restricts the current in each cartridge so as to cause the current to flow in one direction selected from a discharge direction and a charge direction, wherein said cartridges connected together in parallel are simultaneously charged with a direct current voltage converted from a commercial voltage, or said cartridges connected together in parallel are caused to discharge simultaneously so that said electricity storage system outputs a commercial voltage.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 22, 2015
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Masaru Heishi, Masashi Kanoh, Mitsuhide Nogami, Akio Shokaku
  • Patent number: 8933667
    Abstract: Disclosed is an apparatus for controlling the connection of a plurality of battery packs including a switching unit provided on a charge/discharge path of each battery pack to selectively open and close the charge/discharge path, a first control unit provided for each battery pack to determine the state of charge (SOC) of each battery pack and control the opening/closing of the switching unit, and a second control unit to receive the determined SOC of each battery pack from the first control unit, group battery packs having a predetermined range of SOCs, select a group containing a largest number of battery packs, connect the battery packs of the selected group in parallel, charge or discharge the parallel-connected battery packs so that a difference in SOC between the parallel-connected battery packs and the non-connected battery pack falls within a predetermined range, and connect the non-connected battery pack thereto in parallel.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: January 13, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Jong-Min Park, Woo-Jung Kim, Eung-Yong Kim
  • Patent number: 8907597
    Abstract: A battery pack includes: a first battery cell group including at least one high capacity battery cell; and a second battery cell group including at least one high output battery cell and being coupled in parallel to the first battery cell group, wherein the high output battery cell is configured to output a greater current than the high capacity battery cell, the high capacity battery cell is configured to store a greater amount of electric energy compared to the high output battery cell, and the battery pack is configured to operate in one of operational modes including: a high capacity mode for outputting electric energy stored in the first battery cell group; a high output mode for outputting electric energy stored in the second battery cell group; and a mutual charge mode for charging the first battery cell group or the second battery cell group.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: December 9, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin-Wan Kim, Jong-Woon Yang, Susumu Segawa, Eui-Jeong Hwang, Se-Sub Sim, Han-Seok Yun, Beom-Gyu Kim
  • Publication number: 20140330463
    Abstract: A system and method of cell balancing of a battery pack using a cell balancing device of a battery pack is provided and includes a controller that detects an inter-cell voltage deviation in the battery pack. In addition, the controller is configured to determine whether to perform cell balancing on the battery pack and inactivate a relay connected with the battery pack. The controller is further configured to perform cell balancing in the battery pack.
    Type: Application
    Filed: December 16, 2013
    Publication date: November 6, 2014
    Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANY
    Inventor: Wooyeol Jeong