With Discharge Of Cells Or Batteries Patents (Class 320/118)
  • Patent number: 10742044
    Abstract: Disclosed are equalization control method, apparatus and circuit for a power battery.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: August 11, 2020
    Assignee: BEIJING ELECTRIC VEHICLE CO., LTD.
    Inventors: Jin Xiang, Huigen Yu, Zhongke Yang, Jun Sheng
  • Patent number: 10732225
    Abstract: A method and device for estimating remaining available energy of a power battery is provided. The method includes: estimating, under current state, maximum available energy of a first cell with minimum State of Charge (SOC), and maximum available energy of a second cell with minimum of maximum available capability in the power battery; estimating remaining available energy of the first cell based on its maximum available energy and SOC, and estimating remaining available energy of the second cell based on its maximum available energy and SOC; and estimating the remaining available energy of the power battery based on the number of cells included in the power battery and the smaller one of the remaining available energy between the first and the second cell.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: August 4, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Qiang Yun, Yushuai Shi, Yanhua Lu
  • Patent number: 10720781
    Abstract: Embodiments of the present invention are directed to a cell protection system that may be employed in high voltage systems such as grid scale energy storage systems. In some embodiments, the advanced cell protection system includes a proactive balancing system for balancing one or more battery units of the energy storage systems. In some embodiments, the advanced cell protection system includes a switching protection system for safely connecting and disconnecting the one or more battery units of the energy storage systems to other systems. In some embodiments, the advanced cell protection system includes an isolated communication system for allowing the one or more battery units to safely communicate with each other and at least one controller of the energy storage system.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: July 21, 2020
    Assignee: Ardent Edge, LLC
    Inventors: Clayborne Dudley Taylor, Jr., Michael Edward Brandt
  • Patent number: 10700535
    Abstract: A charging method of a secondary battery having plural cells includes: connecting the plural cells in series and conducting constant current charging by a first power source; measuring voltages of the plural cells; and connecting the plural cells in parallel and conducting constant voltage charging by a second power source, a voltage of which is lower than a voltage of the first power source, in the case where a measured voltage difference among the plural cells is smaller than a specified value.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: June 30, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akio Minakuchi, Hideto Mori
  • Patent number: 10680448
    Abstract: A voltage detection circuit detects the voltage of a plurality of serially connected cells in a power storage unit. The voltage detection circuit receives a supply of a power supply voltage from both ends of the plurality of cells. A DC-DC converter converts the voltage between both ends of the plurality of cells into another DC voltage. An adjustment circuit adjusts the power consumption of the plurality of cells. The adjustment circuit operates using the DC voltage generated by the DC-DC converter as the power supply voltage.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: June 9, 2020
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Junya Yano, Tomoyuki Matsubara, Hidetsugu Mukae, Jun Asakura
  • Patent number: 10673100
    Abstract: An electric power system and a management method thereof. The electric power system includes a plurality of battery packs and a battery management apparatus. Each of the battery packs includes a casing, a battery cell assembly disposed in the casing, an encoder, and a monitoring unit, wherein the encoder could generate one of a plurality of encoding configurations and has an operating section which is adapted to be manually set the encoding configuration by a user; the monitoring unit senses a state of the battery cell assembly and generates an identification code according to the encoding configuration of the encoder, and outputs a state signal including the identification code. The battery management apparatus receives the state signal of each of the monitoring unit and obtain the state of the corresponding battery cell assembly according to the identification code of the received state signal.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: June 2, 2020
    Assignee: MOBILETRON ELECTRONICS CO., LTD.
    Inventor: Meng-Chang Lin
  • Patent number: 10666062
    Abstract: Systems and methods for power management are disclosed herein. In one disclosed embodiment, a battery charging system includes a battery charger for simultaneously charging a battery (and/or providing power to a system load) with multiple power sources, using a closed-loop charging servo target based on measurements taken by one or more gauges. In some embodiments, the multiple power sources may be utilized simultaneously according to a charging profile that specifies, e.g., one or more battery charging parameters, as well as according to determined priority levels for one or more of the multiple power sources coupled to the battery. In some embodiments, the priority level of a given power source is not fixed; rather, the priority level for the given power source may change based upon the characteristics of the given power source. In some embodiments, the priority levels for the multiple power sources are implemented using cascaded voltage target values.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: May 26, 2020
    Assignee: Apple Inc.
    Inventors: Thomas C. Greening, Kamran M. Hasan
  • Patent number: 10666081
    Abstract: A battery management system for use in charging a rechargeable battery is disclosed. The battery management system comprises a controller and a temperature sensor, wherein the temperature sensor is configured to provide a temperature signal based on a temperature of the rechargeable battery, and wherein the controller is configured to control a charging current for charging the rechargeable battery based on the temperature signal. In response to the temperature signal indicating that the temperature exceeds a first threshold temperature signal value the charging current is tapered down as a function of increasing temperature.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: May 26, 2020
    Assignee: Hyperdrive Innovation Limited
    Inventors: Stephen Irish, Robin Shaw
  • Patent number: 10658850
    Abstract: Disclosed herein is a battery module that includes an external power supply terminal, a battery cell, a monitoring circuit that monitors a state of the battery cell, and a switch circuit that supplies one of an electric power supplied from the external power supply terminal and an electric power supplied from the battery cell to the monitoring circuit based on a switching signal.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: May 19, 2020
    Assignee: TDK CORPORATION
    Inventors: Takayuki Mino, Masayuki Yamashima
  • Patent number: 10632862
    Abstract: An electric power system includes an energy recovery system that is operable to convert kinetic energy into electric energy at a first voltage. A primary energy storage device is electrically connected to the energy recovery system at the first voltage. A first voltage autonomous driving system load is disposed in a parallel circuit with the energy recovery system and the primary energy storage device. A bi-directional DC-DC converter is electrically connected to the energy recovery system and the primary energy storage device for converting the electric energy between the first voltage and a second voltage. A secondary energy storage device is electrically connected to the bi-directional DC-DC converter at the second voltage. A second voltage autonomous driving system load is disposed in a parallel circuit with the secondary energy storage device.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: April 28, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Venkata Prasad Atluri, Chandra S. Namuduri, Massimo Osella, Upali P. Mudalige, Nikhil L. Hoskeri
  • Patent number: 10637036
    Abstract: A battery for a motor vehicle, in which electrical connections of a plurality of battery cells, are connected by at least one electrically conducting connection element. The battery cells have a galvanic element. The battery cells are connected so that a rated voltage is provided by the battery which is greater than the rated voltage of one of the battery cells. After connecting the electrical connection terminals of at least two battery cells, a switching element of one of the battery cells, arranged between an arrester of the galvanic element and one of the electrical connection terminals, is brought into a switching state in which an electrically conducting connection between an arrester of the galvanic element and at least one of the electrical connection terminals of the battery cell is produced.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: April 28, 2020
    Assignee: AUDI AG
    Inventors: Michael Hinterberger, Berthold Hellenthal
  • Patent number: 10629961
    Abstract: The present invention relates to a cell balancing system and method, and more particularly, to a cell balancing system and method capable of supplying a charging voltage through two separately configured charging voltage sources and stably performing cell balancing by supplying a proper charging voltage to a corresponding cell through an individually configured switch in each cell, when the cell balancing is necessary.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: April 21, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Sung Ju Hong, Ho Chol Nam, Hak In Kim, Seog Jin Yoon
  • Patent number: 10622815
    Abstract: Provided is an analogue system for balancing a rechargeable electrical energy storage assembly including a plurality of capacitive-effect electrical energy storage devices connected to one another in series, the system including a balancing device for each storage device, including: a bypass circuit for the storage device, and a first comparator, arranged to control the bypass circuit according to the voltage across the terminals of the storage device and according to a balancing voltage; a second comparator, arranged to control an open state of the bypass circuit of each storage device according to a switch-off voltage, and according to the voltage across the terminals of each storage device.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: April 14, 2020
    Assignee: BLUE SOLUTIONS
    Inventor: Jean-Michel Depond
  • Patent number: 10613156
    Abstract: A ground fault detection apparatus connected to an ungrounded battery supplying power via a step-up circuit to a load and calculating insulation resistance of a system provided with the battery to detect a ground fault includes a capacitor, a set of switches switching among a V0 measurement path, a Vcn measurement path, and a Vcp measurement path, a bypass resistor connected in parallel with the negative-electrode-side insulation resistance via a normally open switch, and a control unit configured to, when the insulation resistance is to be calculated based on a charge voltage measurement value of the capacitor in each of the measurement paths, in a case in which the charge voltage measurement value of the capacitor in the Vcn measurement path is regarded as 0, switch the normally open switch to a closed state and measure the charge voltage of the capacitor in the Vcn measurement path.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: April 7, 2020
    Assignee: YAZAKI CORPORATION
    Inventor: Yoshihiro Kawamura
  • Patent number: 10615610
    Abstract: Systems and methods provide intelligent battery charging and balancing. Energy deficits can be forecasted based on historical data and forecasted energy generation. The deficits can be used to determine charging currents over a period of time, and battery cassettes can be charged according to the charging currents to compensate for the forecasted energy deficit. The states of charge of the battery cassettes can be periodically rebalanced. The battery cassettes can be coupled in series and charged and balanced while providing output to a load.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: April 7, 2020
    Assignee: EKERGY LLC
    Inventor: Howard John Jelinek
  • Patent number: 10613148
    Abstract: A battery monitoring system includes a multiplexer, a self-diagnosis voltage generation circuit, a first voltage measuring circuit and a voltage measuring circuit which measure voltage signals in a first route and a second route inputted through the multiplexer, based on the self-diagnosis voltage generated from the self-diagnosis voltage generation circuit or based on the voltages of battery cells outputted from the input circuit, a comparator which compares measurement results of the first and second voltage measuring circuits, and a control unit which judges the presence/absence of a failure in a measuring route connected to the first voltage measuring circuit or the second voltage measuring circuit and the presence/absence of a failure of the first voltage measuring circuit itself or the second voltage measuring circuit itself, based on a comparison result by the comparator and which controls the input circuit, the multiplexer, the comparator, and the self-diagnosis voltage generation circuit.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: April 7, 2020
    Assignee: YAZAKI CORPORATION
    Inventor: Takaaki Izawa
  • Patent number: 10605869
    Abstract: Voltage-dividing resistors are arranged in parallel with a first DC power supply. A first switch is electrically connected to a first resistor and a second resistor and includes a first terminal, a second terminal, and a control terminal. A second switch switches supply of a power voltage from a second DC power supply. A voltage comparator includes a first and a second input terminals. A reference power supply is connected to the first input terminal of the voltage comparator and outputs a reference voltage. The first terminal of the first switch is electrically connected to the second input terminal of the voltage comparator. The control terminal of the first switch is electrically connected to a positive voltage side of the second DC power supply. When the power voltage is supplied to the control terminal, and allows a voltage to be applied to the first and the second resistors.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: March 31, 2020
    Assignee: SANKEN ELECTRIC CO., LTD.
    Inventors: Youichi Terasawa, Akira Ichinose, Takashi Kawaguchi
  • Patent number: 10608463
    Abstract: Charging methods and systems are provided which charge multiple cells directly from an AC source, by adjusting, momentarily, the number of charged cells to the momentary voltage level provided by the AC source. Cells are rapidly switched in and out to correspond to the provided voltage level, and the charging level of each cell is regulated by the switching order of the cells—determined according to cell characteristics such as state of charge and state of health. Advantageously, charging losses are reduced significantly in the disclosed systems and methods, and an additional level of cell control is provided. The charged assembly of cells may be arranged and re-arranged in various configurations to optimize the charging scheme, e.g., to equalize the charging states of the cells to simplify the use and improve the efficiency of the cell stack.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: March 31, 2020
    Assignee: Storedot Ltd.
    Inventors: Daniel Aronov, Avraham Edelshtein, Maxim Liberman
  • Patent number: 10608294
    Abstract: A power storage device includes: a plurality of series-connected battery cells (311); a balance circuit (112) that is provided for each of the plurality of battery cells (311), and is connected with corresponding one of the battery cells; a first temperature sensor (111) that is provided for every one or more of the balance circuits (112), and measures a temperature of a corresponding balance circuit (112); and a control unit (121) that stops an operation of the corresponding balance circuit (112) when a first measured temperature measured by the first temperature sensor (111) is equal to or more than a first upper reference temperature, and restarts an operation of the corresponding balance circuit (112) when the first measured temperature becomes equal to or less than a first lower reference temperature that is lower than the first upper reference temperature after an operation of the corresponding balance circuit (112) is stopped.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: March 31, 2020
    Assignee: NEC Corporation
    Inventors: Hiroshi Sasaki, Yasushi Hashimoto
  • Patent number: 10594146
    Abstract: A battery control circuit that is used for a battery protecting apparatus configured to protect a secondary battery in which cells are connected in series includes: a level shift circuit configured to shift respective levels of cell voltages of the cells to generate level shift voltages; a maximum voltage output circuit including differential amplifier circuits for the respective level shift voltages, the respective differential amplifier circuits being configured to compare the corresponding level shift voltages with threshold voltages to generate output voltages, the maximum voltage output circuit being configured to simultaneously compare the output voltages to output a maximum voltage corresponding to a cell voltage whose voltage value is highest; an overcharge detecting circuit configured to detect overcharging of the secondary battery based on the maximum voltage; and a maximum voltage cell specifying circuit configured to specify, based on the output voltages, a cell whose voltage value is highest.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: March 17, 2020
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventor: Kohei Shibata
  • Patent number: 10587127
    Abstract: There is provided a charging device including a charging voltage providing unit configured to provide a maximum charging voltage for an electricity storage unit, wherein the electricity storage unit includes a plurality of battery cells, and wherein the maximum charging voltage satisfies an equation (1) below: Maximum Charging Voltage=Total Battery Voltage+(Fully Charged Voltage?Maximum Cell Voltage)*n (1) wherein n represents a total number of the battery cells connected in series.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: March 10, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Hisato Asai, Eiji Kumagai, Noritoshi Imamura, Koji Umetsu
  • Patent number: 10576844
    Abstract: Disclosed is a battery management apparatus, which includes: a plurality of first power paths configured to electrically connect a plurality of battery modules and a balancing resistor; a plurality of first switching units configured to electrically connect or disconnect the plurality of first power paths; a plurality of second power paths configured to electrically connect the plurality of battery modules to a fan for cooling a substrate at which the balancing resistor is mounted; a plurality of second switching units configured to electrically connect or disconnect the plurality of second power paths; a residual capacity calculating unit configured to calculate a residual capacity of each of the plurality of battery modules; a determining unit configured to determine a battery module to be balanced among the plurality of battery modules based on the residual capacity; and a control unit configured to control the plurality of first switching units.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: March 3, 2020
    Assignee: LG Chem, Ltd.
    Inventor: Won-Gon Kim
  • Patent number: 10581260
    Abstract: The disclosure involves wireless electric power sharing between vehicles. A first vehicle sends a charging request, wherein the first vehicle is at least partially powered by a first on-board rechargeable electricity storage. The first vehicle receives a response to the charging request from a second vehicle which is at least partially powered by a second on-board rechargeable electricity storage, and a communication channel is established between the first and second vehicles. The first on-board rechargeable electricity storage is charged using energy stored in the second on-board rechargeable electricity storage and wirelessly transferred from the second vehicle to the first vehicle. The charging is controlled with information exchanged between the first and second vehicles over the communication channel.
    Type: Grant
    Filed: November 12, 2017
    Date of Patent: March 3, 2020
    Assignee: INTERNATONAL BUSINESS MACHINES CORPORATION
    Inventors: Si Bin Fan, Ge Liang, Hao Sheng, Hai Dong Zhang, Jinfan Zhu
  • Patent number: 10574074
    Abstract: An electronic device is provided. The electronic device includes a housing, a battery included within the housing, a connector electrically connected to an external power supply device including an integrated circuit (IC) and exposed to a part of the housing, and a power management unit included within the housing and electrically connected to the connector, wherein the power management unit is configured to communicate with the IC of the external power supply device, and wherein the connector is configured to receive a first current of a first current value during at least a part of the communication and to receive a second current of a second current value greater than the first current value during at least a part in which the communication is not performed.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: February 25, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kuchul Jung, Sunggeun Yoon, Kisun Lee, Hoyoung Lee, Seyoung Jang, Hyemi Yu
  • Patent number: 10566803
    Abstract: The teachings of the present disclosure may be employed for buffering electric power in a virtual storage power plant. For example, a virtual power plant for buffering electric power may include: distributed electrical energy storage systems electrically interconnected by transmission lines of an electrical power plant network; a measuring device detecting a state of charge of each of the storage systems; and a control device adjusting the states of charge between a lower limit and an upper limit. The states of charge are adjusted as needed by means of a charge equalization including transmitting electrical equalization charges from energy storage systems having a relatively high state of charge to energy storage systems having a relatively low state of charge, via the electrical power plant network.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: February 18, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Christopher Betzin, Matthias Simon Lepiorz, Holger Wolfschmidt
  • Patent number: 10554054
    Abstract: A battery system includes a battery module that is constituted with a plurality of serially connected battery cells, a plurality of integrated circuits that group the battery cells so as to perform processing on battery cells in each group, a first transmission path through which a command signal is transmitted via a first insulating circuit from a higher-order control circuit that controls the integrated circuits to a highest-order integrated circuit of the integrated circuit, a second transmission path through which a data signal collected by the integrated circuits is transmitted from the highest-order integrated circuit to a lowest-order integrated circuit, and a third transmission path through which the data signal is transmitted from the lowest-order integrated circuit to the higher-order control circuit via a second insulating circuit.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: February 4, 2020
    Assignees: Hitachi, Ltd., Hitachi Automotive Systems, Ltd.
    Inventors: Kenji Kubo, Akihiko Kudo, Mutsumi Kikuchi, Gosuke Shibahara
  • Patent number: 10530017
    Abstract: In a storage-battery control system, an insulating communication unit couples a controller and a plurality of battery modules coupled together in series to configure a storage battery unit. A floating grounding pattern of the controller is divided into a first floating grounding pattern and a second floating grounding pattern. The plurality of battery modules in the storage battery unit is divided into a first zone battery module group and a second zone battery module group so that the battery modules belonging to the first zone battery module group correspond to the first floating grounding pattern, while the battery modules belonging to the second zone battery module group correspond to the second floating grounding pattern. An insulating communication unit couples the respective battery modules.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: January 7, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takahiro Kamikawa, Takayuki Mino
  • Patent number: 10523022
    Abstract: A power management circuit for a battery cell is provided. The battery cell is coupled to a load through an output terminal. The power management circuit includes a current detection circuit, a loading determination circuit, and a voltage determination circuit. The current detection circuit detects a discharge current of the battery cell when the battery cell is discharged through the load to generate a discharge-current signal. The loading determination circuit determines a loading value of the load according to the discharge-current signal to generate a loading signal. When the battery voltage of the battery cell drops to the cut-off voltage, the power management circuit terminates the discharge of the battery cell through the load.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: December 31, 2019
    Assignee: QUANTA COMPUTER INC.
    Inventor: Wei-Ting Yen
  • Patent number: 10520555
    Abstract: A battery monitoring apparatus that monitors a temperature of a battery includes a temperature detecting unit, a power supply, a limiting unit, a temperature acquiring unit, and determining unit. The temperature detecting unit is provided for the battery. Resistance of the temperature detecting unit changes with temperature. The power supply applies a voltage to the temperature detecting unit. The limiting unit limits the application of voltage to the temperature detecting unit from the power supply. When the limiting unit is not limiting the application of voltage, the temperature acquiring unit determines the temperature of the battery based on a voltage-drop amount in the temperature detecting unit. When the limiting unit is limiting the application of voltage, the determining unit makes a determination regarding a short circuit between the temperature detecting unit and the battery based on the voltage applied to the temperature detecting unit.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: December 31, 2019
    Assignee: DENSO CORPORATION
    Inventors: Shinsuke Kawamoto, Yasuhito Tanabe
  • Patent number: 10522882
    Abstract: A semiconductor device includes a voltage measurement unit that measures an output voltage of a battery, a current measurement unit that measures a discharge current of the battery; and a controller that determines, in a first measurement mode, whether to employ a first discharge current as a power calculation current based on a difference between the first and a second discharge current, the second discharge current being the discharge current measured by the current measurement unit before the first discharge current is measured, in which the controller estimates an internal resistance of the battery based on the power calculation current and the output voltage measured in the first measurement mode and the discharge current and the output voltage measured in a second measurement mode, and calculates, based on the internal resistance that is estimated, a maximum power amount that can be output by the battery in the second measurement mode.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: December 31, 2019
    Assignee: RENESAS ELECTRONICS CORPORATIONS
    Inventor: Hidekazu Nagato
  • Patent number: 10505376
    Abstract: Provided is a power storage apparatus, including: series circuits, the series circuits being formed of first coils and first switching elements, the first coils and the first switching elements being connected to a plurality of battery units in parallel; second coils electromagnetically coupled to the first coils; second switching elements connected to the second coils in series; a capacitor inserted between two common power source lines for commonly supplying voltage to both ends of the series circuits of the second coils and the second switching element related to the plurality of battery units; and a control unit that supplies a control pulse signal to the first switching element and the second switching element for equalizing voltage of each of the plurality of battery units, in which an amount of charge obtained by dividing an amount of transferred charge necessary for eliminating a voltage difference between the first battery unit and the second battery unit into 10 or more is transferred by switching o
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: December 10, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Naoyuki Sugeno, Kohki Watanabe, Noritoshi Imamura, Yusuke Suzuki, Takuma Hashimoto
  • Patent number: 10495695
    Abstract: An abnormality detecting device detects abnormalities in a system including a plurality of battery assemblies each having a plurality of cells connected in series, and includes: a connecting component configured to connect and disconnect adjacent two of the battery assemblies; and a detachment detector configured to detect whether or not the connecting component has been detached.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: December 3, 2019
    Assignee: Panasonic Intellectual Property Management Co. Ltd.
    Inventors: Daichi Hashimoto, Takashi Nakazawa, Haruhiko Sekino
  • Patent number: 10498149
    Abstract: A battery protection circuit protects a rechargeable battery from overdischarge, by turning off a transistor inserted in series in a current path between a negative electrode of the battery and a negative terminal coupled to ground of a load or a charger. A detection circuit detects a power source voltage between power source and ground terminals, and a control circuit pulls down a monitor terminal potential to a ground terminal potential by turning off the transistor and stopping battery discharge when the power source voltage lower than an overdischarge detection voltage is detected. The control circuit cancels pull-down of the monitor terminal potential to the ground terminal potential when the power source voltage higher than an overdischarge reset voltage is not detected until a predetermined time elapses in a state in which the battery discharge is stopped and the monitor terminal potential is pulled down to the ground terminal potential.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: December 3, 2019
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventor: Kohei Shibata
  • Patent number: 10473726
    Abstract: A battery management method includes verifying variance information of a physical quantity of each of a plurality of batteries, and identifying a target battery among the batteries based on the variance information. The battery management method also includes determining pack state information of a battery pack comprising the batteries based on state information of the target battery.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: November 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jeonghyun Park
  • Patent number: 10464434
    Abstract: An energy storage system includes an energy storage provided in a transportation unit, a connector electrically connectable to an external power transmission management apparatus, a power transmission circuit, and a processor. The processor is configured to control the power transmission circuit in accordance with an output from the external power transmission management apparatus to perform power transmission between the energy storage and an external power system, and control the power transmission circuit in accordance with an output from the external power transmission management apparatus, if a degree of variation in charging states in the energy storage and one or more external energy storages is greater than or equal to a threshold value, to perform power transmission between the energy storage and the one or more external energy storages to reduce the degree of variation before performing the power transmission between the energy storage and the external power system.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: November 5, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Keiichiro Homma, Jun Kudo
  • Patent number: 10468897
    Abstract: The disclosure involves wireless electric power sharing between vehicles. A first vehicle sends a charging request, wherein the first vehicle is at least partially powered by a first on-board rechargeable electricity storage. The first vehicle receives a response to the charging request from a second vehicle which is at least partially powered by a second on-board rechargeable electricity storage, and a communication channel is established between the first and second vehicles. The first on-board rechargeable electricity storage is charged using energy stored in the second on-board rechargeable electricity storage and wirelessly transferred from the second vehicle to the first vehicle. The charging is controlled with information exchanged between the first and second vehicles over the communication channel.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: November 5, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Si Bin Fan, Ge Liang, Hao Sheng, Hai Dong Zhang, Jinfan Zhu
  • Patent number: 10461544
    Abstract: A method for diagnosing an error of cell balancing in a cell balancing circuit constantly maintaining a plurality of cell voltages of a battery includes a first step of calculating a cell balancing residual time through a cell balancing required time and a cell balancing performing time in a previous driving, a second step of confirming a cell balancing required time in a current driving after the first step, a third step of calculating a time deviation between the cell balancing required time of the second step and the cell balancing residual time of the first step, and a fourth step of deciding whether or not the error has occurred through the time deviation calculated in the third step.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: October 29, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Jong Seo Yoon, Hyun Soo Park
  • Patent number: 10459508
    Abstract: A low frequency power management bus, a method of power management of a device, and a non-transitory computer readable program code configured to execute a power management process for a device are disclosed. The power management bus including a bus, and a plurality of power nodes connected to the bus, each of the plurality of power nodes including power management control logic, a power regulator, and a power policy, and wherein the plurality of power nodes are arranged in a topology with at least one node of the plurality of nodes being designated as a super power node, the super power node configured to be connected either directly or through another power node to each of the plurality of power nodes within the topology.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: October 29, 2019
    Assignee: Konica Minolta Laboratory U.S.A., Inc.
    Inventors: Thien Nguyen, Sarma Sista
  • Patent number: 10424944
    Abstract: The invention relates to a method for automatically regulating an electric output which is dispensed by a secondary battery that has at least two battery cells, wherein the charge states of all the battery cells are repeatedly detected at time intervals, an average charge state (SOCaverage) is ascertained per battery cell from the detected charge states of the battery cells, a deviation of at least one charge state of a battery cell from the average charge state (SOCaverage) is detected, and the average charge state (SOCaverage) and the deviation are taken into consideration during the automatic and dynamic regulation of the electric output dispensed by the secondary battery.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: September 24, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Trinkert, Benjamin Mangold
  • Patent number: 10406932
    Abstract: A converter is to convert at least one of a first voltage output from a first energy storage device and a second voltage output from a second energy storage device. A detector is to detect the first voltage and a current flowing between the first energy storage device and the second energy storage device. Circuitry is configured to control the converter to perform a first constant current control in which a first constant current flows from one of the first energy storage device and the second energy storage device to another of the first energy storage device and the second energy storage device. The circuitry is configured to determine a state of the first energy storage device based on the first voltage and the first constant current while the first constant current control is performed.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: September 10, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Ryota Unno, Daijiro Takizawa, Hirokazu Oguma
  • Patent number: 10408864
    Abstract: A voltage measuring apparatus that individually measures voltages of n-pieces (2?n) of power storage elements B(1) to B(n) connected in series includes: first to n-th voltage detecting units that respectively individually measure voltages of the power storage elements; a switching circuit that switches a connection state between the power storage elements and the first to n-th voltage detecting units; a SW control unit that drives the switching circuit; and an operation processing unit. The power storage elements are arranged in order so that potential becomes higher as n increases. The switching circuit includes a capacitor connected in parallel to the power storage element B(1). In the switching circuit, the negative terminals of the power storage elements are connected to a first terminal of the capacitor via respective corresponding first switches. The positive terminals of the power storage elements are connected to a second terminal of the capacitor via respective corresponding second switches.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: September 10, 2019
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Youhei Yamaguchi, Tomomi Kataoka, Keiichi Kawano, Takahiro Matsuura, Hiroaki Takechi
  • Patent number: 10404082
    Abstract: A battery pack including: a rechargeable battery, a protection circuit configured to disable the rechargeable battery when an output voltage value of the rechargeable battery becomes equal to or lower than a first voltage value, and a control circuit configured to stop power supply for an electronic device from the rechargeable battery when the output voltage value of the rechargeable battery becomes equal to or lower than a second voltage value that is higher than the first voltage value, the second voltage value being updated based on the output voltage value of the rechargeable battery when power supply for the electronic device from the rechargeable battery becomes unnecessary.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: September 3, 2019
    Assignee: Fujitsu Client Computing Limited
    Inventor: Katsuma Ono
  • Patent number: 10389141
    Abstract: A plurality of battery packs is provided in communication with an energy monitoring and control system. Each battery pack includes a plurality of battery cells that collectively dictate the capabilities of the battery pack. The energy monitoring and control system determines a plurality of pack charging or pack discharging parameters for each battery pack that, when performed, achieve one or more performance metrics at a user level (e.g., performance metrics of each battery pack within a system of multiple battery packs). The battery pack further determines a plurality of cell charging or cell discharging parameters for each battery cell based upon the determined plurality of pack charging or pack discharging parameters for each battery cell that, when performed, achieve one or more performance metrics at a battery level (e.g., performance metrics of different cells of each battery pack).
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: August 20, 2019
    Assignee: California Institute of Technology
    Inventors: Mahshid Roumi, Farshid Roumi
  • Patent number: 10389142
    Abstract: Provided is an electric storage system including: a plurality of electric storage devices including a plurality of modules, a battery management unit, and a line concentrator connected with the battery management unit; wherein the plurality of modules include a battery unit, a voltage measurement unit, a temperature measurement unit and a current measurement unit, and wherein the battery management unit is configured to control at least one of the plurality of electric storage devices based on an instruction transmitted from the line concentrator.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: August 20, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoyuki Sugeno, Kohki Watanabe, Kazuharu Yanagihara, Noritoshi Imamura, Yusuke Suzuki
  • Patent number: 10386419
    Abstract: Measurement of a cell voltage is executed immediately after diagnosis of a battery management device is ended. In a battery management device, current sources repeatedly perform an energization operation to cause a current to flow to voltage detection lines with a magnitude of the current that enables each amount of charge stored in capacitors changed by one energization operation to fall within a range corresponding to a fluctuation width of terminal voltages of battery cells during the energization operation when resistors are in a normal state. When the difference between the current terminal voltage of the battery cell and the past terminal voltage of the battery cell is larger than the predetermined threshold value, the microcomputer diagnoses that the resistor is in the open state.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: August 20, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tomonori Kanai, Akihiko Kudo, Tomoyuki Arima, Akiko Tsukamoto
  • Patent number: 10377262
    Abstract: Electric vehicle range extending apparatus includes a step-down voltage provision unit, cell voltage sensing unit, cell switching unit, and control unit. The step-down voltage provision unit has an input port to be coupled to the main battery pack or an auxiliary battery pack, and an output port to output a power balancing signal. The cell voltage sensing unit is for being coupled to the battery cells and sensing individual voltages of the battery cells. The cell switching unit, including a plurality of switches, is coupled to the battery cells respectively, and coupled to the output port. The control unit, coupled to the cell voltage sensing unit, step-down voltage provision unit, and cell switching unit, is for controlling the cell switching unit based on the individual voltages of the battery cells so as to apply the power balancing signal to at least one of the battery cells selectively.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: August 13, 2019
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Wei-Min Hsiao, Kuo-Kuang Jen, Jeng-Chyan Lin, Hsun-Ming Hsien, Fu-Min Fang
  • Patent number: 10367364
    Abstract: Methods and apparatuses for powering a mobile device are provided. The method comprises detecting whether an external battery is useable for powering a mobile device through an interface. The method also comprises receiving power through the interface upon detecting the external battery being useable for powering the mobile device through the interface. With the methods and apparatuses of the present disclosure, it is easy to detect the availability of the external battery, which results in an extended battery life and enhanced battery capacity.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: July 30, 2019
    Assignee: Nokia Technologies Oy
    Inventor: Xuefeng Xu
  • Patent number: 10355504
    Abstract: The invention relates to a method for operating a battery unit comprising at least two series-connected battery cells, wherein a discharge process of at least one battery cell is carried out via a connectable discharge resistor in order to equalize states of charge of the battery cells. According to the invention, the value of the discharge resistance is ascertained during the discharge process of the at least one battery cell, and the previously ascertained value of the discharge resistance is taken into account during a subsequent discharge process of the battery cell.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: July 16, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Jens Becker, Andre Boehm
  • Patent number: 10355496
    Abstract: For each battery sub-module in a plurality of battery sub-modules, a voltage associated with a cell in that battery sub-module is received wherein each battery sub-module in the plurality of battery sub-modules includes a plurality of cells. A battery sub-module is selected based at least in part on the received voltages and a set of one or more loads, which draws power from the selected battery sub-module and is not powered by any other battery sub-module in the plurality of battery sub-modules, is configured so that the set of loads at least temporarily does not draw power from the selected battery sub-module.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: July 16, 2019
    Assignee: Kitty Hawk Corporation
    Inventors: Scott Furman, Lewis Romeo Hom
  • Patent number: 10345383
    Abstract: A device is disclosed that determines the actual capacity of a battery. The device determines the charge state of the battery and monitors discharge events. Before additional charge is applied, a minimum useful capacity is recorded based on passed charge values recorded by a battery gas gauge during discharge. Before a low voltage shut down, a full capacity is recorded based on passed charge values. The battery capacity information can be used to provide insights on the timing for battery replacement and for improvement in workflows involving the device.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: July 9, 2019
    Assignee: Hand Held Products, Inc.
    Inventors: Jeffrey Wayne Mullen, Mark Alan Howe, Ramon Redondo