With Discharge Of Cells Or Batteries Patents (Class 320/118)
  • Patent number: 11329491
    Abstract: A distributed battery balance management method includes: performing a battery system balancing procedure by a battery system balance management unit and performing battery module balancing procedure by module balance management circuit (MBMC) of corresponding battery module (BM). The battery system balancing procedure includes: obtaining lowest module voltages of corresponding BMs; obtaining a lowest system voltage and an average system voltage of the battery system; determining whether the lowest module voltage of the corresponding BM is greater than the average system voltage; when yes, setting a balance time duty ratio of the corresponding MBMC as a first duty ratio; when no, setting the balance time duty ratio of the corresponding MBMC as a second duty ratio; and setting module balance enable signal of corresponding MBMC to be enable, thus allowing the corresponding BM to perform voltage balance control on the batteries in the corresponding BM.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: May 10, 2022
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Wei-Ting Tai, Wei-Hsu Chang
  • Patent number: 11329489
    Abstract: A rechargeable battery is coupled to a power delivery unit or an external load unit. In a charging mode, the power delivery unit converts an input power to a converted voltage and/or current. A charging circuit converts the converted voltage and/or current to a charging voltage and/or current for charging the rechargeable battery. Power data is communicated between the power delivery unit and the rechargeable battery by: 1) the power delivery unit adjusting the converted voltage, wherein the power data is expressed by plural voltage levels of the converted voltage; and/or 2) the rechargeable battery adjusting a battery input current, wherein the power data is expressed by plural current levels of the battery input current. At least one of the converted voltage, the converted current, the charging voltage, or the charging current is adjusted according to the power data.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: May 10, 2022
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Wei-Hsu Chang, Ta-Yung Yang
  • Patent number: 11322967
    Abstract: A control device for controlling discharging of a rechargeable battery, the control device being configured to: determine the voltage of the battery during discharging of the battery, stop discharging, when the determined voltage falls below a first predetermined lower voltage limit, determine the voltage of the battery after stopping discharging, determine the voltage difference between the first predetermined lower voltage limit and the determined voltage of the battery after stopping discharging, and continue discharging, when the determined voltage difference exceeds a predetermined threshold. A corresponding method controls discharging of a rechargeable battery.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: May 3, 2022
    Assignee: TOYOTA MOTOR EUROPE
    Inventors: Keita Komiyama, Yuki Katoh
  • Patent number: 11309586
    Abstract: A discharge circuit includes a plurality of burden circuits that are electrically connected in parallel to a plurality of power storage units, respectively. Each of the plurality of burden circuits includes (i) a resistor and a switch that are electrically connected in series between both ends of a corresponding one of the plurality of power storage units, and (ii) a control terminal that controls the switch according to a potential of the control terminal. The plurality of burden circuits are electrically connected in series between a positive electrode and a negative electrode. The control terminal of a n+1-th burden circuit from a reference point is electrically connected, via the switch of the n-th burden circuit from the reference point, to a reference point side terminal of a n-th power storage unit from the reference point. The reference point is the positive electrode or the negative electrode.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: April 19, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroaki Tsukamoto, Yohsuke Mitani, Takahiro Kudo, Yoshimitsu Odajima
  • Patent number: 11296516
    Abstract: The invention provides a battery managing system, which includes: a charging/discharging unit, configured to operably charge/discharge the battery; a sensing unit, configured to operably sense a voltage, a discharging current and a discharging duration time of the battery during discharging the battery; and a calculating unit, determining a charge/discharge capability of the battery according to the voltage, the discharge current, the discharge duration time, and temperature of the battery. According to the present invention, the battery managing system can be included in a chip insides each cell of the battery for early indication of poor reliability, so that the chip can be used to determine the charge/discharge capability or to prevent explosion.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: April 5, 2022
    Inventor: Cher Ming Tan
  • Patent number: 11289925
    Abstract: In a method of controlling a battery system having a battery module comprising a plurality of battery sub modules connected in parallel between system terminals, the method includes: measuring voltage values of the plurality of battery sub modules and/or cells in the plurality of battery sub modules and current values that flow on the battery module; detecting an occurrence of an internal short in the battery module by monitoring the voltage values or the current values; and electrically separating at least one battery sub module in which the internal short occurs from among the plurality of battery sub modules from the system terminals in response to the internal short occurring in the battery module.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: March 29, 2022
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young Shin Cho, Seung-Il Kim, Gangya Park, Yoonphil Eo
  • Patent number: 11289932
    Abstract: A battery pack having separate charging and discharging paths includes a battery including at least one battery cell, a processor configured to monitor the battery and to control charging and discharging operations of the battery, a charging switch arranged along at least one of a first path electrically connecting a first pole of the battery to a charging device and a third path electrically connecting a second pole of the battery to the charging device, the charging switch being configured to operate according to a control signal generated by the processor, and a discharging switch arranged along at least one of a second path electrically connecting the first pole of the battery to a load and a fourth path electrically connecting the second pole of the battery to the load, the discharging switch being configured to operate according to the control signal generated by the processor.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: March 29, 2022
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Kyongpil Jin
  • Patent number: 11283274
    Abstract: An apparatus including a monitoring unit including a voltage detection circuit which detects a voltage of the plurality of battery cells, a balancing unit including a first common resistor element and a switching module, the first common resistor element connected between a first common node and a second common node, and a control unit operably coupled to the monitoring unit and the switching module, the control unit determining a balancing target including at least one of the plurality of battery cells based on the voltage of each of the plurality of battery cells, and controlling the switching module to form a current channel between the first common resistor element and the balancing target.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: March 22, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventor: Ho-Byung Yoon
  • Patent number: 11264811
    Abstract: A method is described in which electronic circuitry of a mobile device is powered by a plurality of battery cells that are selectably connectable in series and in parallel. The energy utilization of the circuitry is measured during operation. The power efficiency for series and parallel configurations of the battery cells is determined based on the measured energy utilization. The battery cells are configured in series or in parallel based on which of the series and parallel configurations is determined to provide a higher efficiency of energy utilization during operation.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: March 1, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Suketu Partiwala, Monji G. Jabori, Stephen Ken Gustafson
  • Patent number: 11264809
    Abstract: A method for operating an energy storage system, which includes at least one energy store with a plurality of cells and is designed to supply an electric drive system of a vehicle is provided. The method includes identifying a reference cell from among the cells, and carrying out a first symmetrization procedure for the cells at a first point in time, at which the reference cell has a first reference charge state.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: March 1, 2022
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Tobias Hollweg
  • Patent number: 11258274
    Abstract: The present disclosure relates to an apparatus and method for equalizing the charge of a plurality of battery modules while balancing the plurality of battery modules included in a battery pack. The present disclosure has an advantage of allowing easy manufacture of the battery pack with a reduced size since of the battery pack connectors may be simplified and the volume of wire harness may be reduced.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: February 22, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventor: Chang-Hyun Sung
  • Patent number: 11230205
    Abstract: A power storage unit is configured with a plurality of cell strings (St1, St2, St3), where the cell strings are parallel-connected, and each cell string (St1, St2, St3) is constituted by a plurality of series-connected cells (E111 to E1nn, E211 to E2nn, E311 to E3nn). Voltage detector (111 to 13n) detects a voltage of each of the plurality of cell strings (St1, St2, St3). A plurality of switches (S1, S2, S3) are respectively inserted in the plurality of cell strings (St1, St2, St3). Management unit (20) performs, in a non-running state of vehicle (2) that power supply system (1) is mounted on, an equalization process to equalize a voltage and/or capacity between the plurality of cell strings (St1, St2, St3) by turning on at least two of the plurality of switches (S1, S2, S3).
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: January 25, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Chikara Ohmori
  • Patent number: 11225170
    Abstract: A vehicle includes a traction battery having a plurality of battery cells and a balance circuit configured to selectively discharge one or more of the battery cells. A controller is programmed to estimate charge capacities of the battery cells and determine a standard deviation of the estimated capacities. The controller is further programmed to determine a skewness of the estimated capacities. The controller is also programmed to, in response to the skewness exceeding a first threshold, command the balance circuit to discharge one or more of the battery cells when a state of charge (SOC) of the traction battery is less than a second threshold, and, in response to the skewness being less than the first threshold, command the balance circuit to discharge one or more of the battery cells when the SOC of the traction battery is greater than the second threshold.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: January 18, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Rui Wang, Xiao Guang Yang, Yuan Zhang, Xu Wang
  • Patent number: 11211667
    Abstract: The present disclosure relates to a battery module and a battery pack. The battery module includes a plurality of secondary batteries arranged side by side, each of which includes a vent; a monitoring assembly, disposed above the plurality of secondary batteries and including a base plate and a monitoring wire, wherein the monitoring wire is coupled to the base plate; the monitoring wire is disposed corresponding to positions of the vents of the plurality of secondary batteries, and can be broken off when any of the vents bursts, so as to monitor a state of the battery module.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: December 28, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Guoliang Hu, Chao Zeng, Xianchun Zhu, Quan Yang
  • Patent number: 11205806
    Abstract: A battery module equalization apparatus includes a plurality of slave controllers each electrically connected to the plurality of battery modules to measure voltage values of the plurality of battery modules, and having a slave charging/discharging channel through which the current that charges and discharges each battery module flows, and a master controller that receives the voltage value of each battery module from the plurality of slave controllers, selects at least one of the plurality of slave controllers based on the received voltage value, and transmits a CHARGE or DISCHARGE command to the at least one selected slave controller, and having a master charging/discharging channel through which the charging current supplied to the at least one slave controller and the discharging current supplied from the at least one slave controller flow.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: December 21, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Chang-Hyun Sung, Sang-Hoon Lee, Yean-Sik Choi
  • Patent number: 11198376
    Abstract: A high voltage electrical system for a vehicle, the system comprising: a high voltage battery unit having a first high voltage battery connected in series with a second high voltage battery such that a nominal operating voltage of the battery unit is the sum of a voltage of the first high voltage battery and a voltage of the second high voltage battery; a bi-directional high voltage DC/DC-converter connected in parallel with the first high voltage battery and with the second high voltage battery, the DC/DC-converter being arranged to receive a charging voltage from a high voltage inlet or from a propulsion converter connected to an electrical machine; wherein the DC/DC converter is configured to control charging of the first and second high voltage battery to balance a state of charge of the first and second high voltage battery.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: December 14, 2021
    Assignee: Volvo Car Corporation
    Inventor: Robert Eriksson
  • Patent number: 11199589
    Abstract: A method for evaluating a consistency of a battery pack is provided, including: obtaining an initial/real rated capacity and an initial/real dischargeable electric quantity of each cell in a battery pack after a charge and discharge cycle of the battery pack; generating a first/second data diagram for every cells based upon the initial/real rated capacity and the initial/real dischargeable electric quantity; obtaining a first/second information of key cells in the first/second data diagram, defining an initial/real cell distribution region according to the first/second information by processing the first/second data diagram, and calculating a first/second area of the initial/real cell distribution region; and evaluating the consistency of the battery pack according to the first/second area. A strategy for balancing the battery pack is further provided.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: December 14, 2021
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Dong-Xu Guo, Xu-Ning Feng, Yue-Jiu Zheng, Xue-Bing Han, Lan-Guang Lu, Ming-Gao Ouyang, Xiang-Ming He, Geng Yang
  • Patent number: 11196278
    Abstract: Controlling an energy storage system includes providing one or more constraints to an optimization problem algorithm, determining by the optimization problem algorithm a DC bus voltage value that results in an minimum total power dissipation for the plurality of power converters, calculating a respective control variable for each of the respective plurality of power converters based on the determined DC bus voltage value, and generating control processor executable instructions to implement control of each of the plurality of power converters to achieve the calculated respective control variable. A system for implementing the method and a non-transitory computer-readable medium are also disclosed.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: December 7, 2021
    Assignee: General Electric Company
    Inventors: Mohammed Agamy, Ramanujam Ramabhadran, Kenneth McClellan Rush, Luca Tonini, Ahmed Elasser, Herman Lucas Norbert Wiegman
  • Patent number: 11192467
    Abstract: The invention relates to a method for balancing an electrical energy storage module (1) comprising a plurality of units (3) for an electric vehicle (5). The energy storage module (1) is operative according to a first balancing target type. A present operating condition of the energy storage module is determined (S402), and a future operating condition of the energy storage module is determined (S404). Further, there is selected (S406) a second balancing target type among a plurality of predetermined balancing targets (204) based on the present operating condition and the future operating condition, each of the balancing targets being indicative of an energy storage unit characteristic to be balanced in order to achieve the balancing target type. There is further provided to switch (S408) from balancing the energy storage module according to the first balancing target type to balancing the energy storage module according to the second balancing target type.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: December 7, 2021
    Assignee: VOLVO TRUCK CORPORATION
    Inventors: Hanna Bryngelsson, Jonas Hellgren
  • Patent number: 11187758
    Abstract: The present disclosure is directed to method of automatic circuit fault detection. The method includes inputting a common periodic wave voltage to each of a plurality of battery cells of a battery pack. Recursively calculated correlation coefficients for each neighboring pair of the battery cells are used to determine whether a common battery cell of two neighboring pairs is faulty. The disclosure further describes equalizers for multi-cell battery packs and series-connected battery strings. The equalizers can include a coupling capacitor comprising a plurality of small plates coupled between the two series-connected metal-oxide-semiconductor field-effect transistors (MOSFETs) connected to each battery cell, and a larger plate, wherein the larger plate is commonly coupled to all of the small plates. A plurality of battery string groups can be equalized, where each cell includes one transformer winding and a MOSFET. The MOSFETs are driven using one pair of complementary pulse width modulation signals.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: November 30, 2021
    Inventors: Chunting Mi, Fei Lu, Bing Xia, Yunlong Shang
  • Patent number: 11171494
    Abstract: There is described a method of balancing a multi-cell battery. An alignment distance for each cell of the multi-cell battery is determined. The alignment distance defines a change in charge quantity required to achieve a target alignment point, based on a current charge quantity of the cell. Based on the determined alignment distances, one or more unbalanced cells are identified. Each unbalanced cell is then balanced by adjusting its current charge quantity according to the alignment distances. In one embodiment, the target alignment point is a target state of charge. In another embodiment, the target alignment point is a target charge quantity.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: November 9, 2021
    Inventors: Siu Lun Isaac Tang, David Maurice Lokhorst
  • Patent number: 11165358
    Abstract: Provided is a switching control method for an isolated bidirectional DC-DC converter, wherein the isolated bidirectional DC-DC converter connected between a DC grid system and a battery uses multiple switching controls together depending on a voltage of the battery, thereby facilitating high efficiency control. In the isolated bidirectional DC-DC converter according to the present invention, switching of a first switching unit and a second switching unit is controlled to control the flow of power by changing the bidirectional DC-DC voltage between the DC grid system and the battery, and the first and the second switching unit are switched using PSM switching control, SPWM switching control, and DPWM switching control together depending on a voltage with which the battery is charged and load capacity, thereby enhancing efficiency of the system.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: November 2, 2021
    Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATION
    Inventors: Byung Hwan Jeong, Jeong Min Lee
  • Patent number: 11152651
    Abstract: A method for generating battery characteristics for a battery having a target composition includes identifying open-circuit potential (OCP) characteristics for two similar battery compositions having different proportions of elements. The OCP characteristics are converted to dQ/dV characteristics and linearly combined to derived a target dQ/dV characteristic. The target dQ/dV characteristic is integrated to derived a target OCP characteristic. A battery constructed of the target composition is operated according to the target OCP characteristic.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: October 19, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Yelena Gorlin, Kevin Kimura, Rebecca Wilhelm, Soo Kim, Camille Usubelli, Munir Besli, Joerg Ziegler, Reinhardt Klein, Jake Christensen
  • Patent number: 11142091
    Abstract: A power supply device includes: a first power storage device; a second power storage device that outputs voltage higher than the output voltage of the first power storage device and is connected in series to the first power storage device; a voltage converter connected to the output terminal of the first power storage device to output converted voltage; a second load connected to the output terminal of the voltage converter; and a control unit that controls the voltage converter at fixed boost ratio such that the converted voltage is the sum of the output voltage of the first power storage device and output voltage of the second power storage device. The output terminal of the first power storage device is connected to the second power storage device. The output terminal of the second power storage device is connected to the output terminal of the voltage converter.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: October 12, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Toshihiro Sone
  • Patent number: 11135939
    Abstract: An electrified vehicle includes a powertrain that includes an engine and an electric machine. The vehicle includes a traction battery that is charged and discharged by operation of the engine and the electric machined. The vehicle includes a controller programmed to operate the engine and the electric machine to satisfy a driver power demand. The controller is also programmed to initiate an estimated of a capacity of the traction battery under predetermined conditions. The controller operates the engine and the electric machine to satisfy the driver power demand and charge and discharge the traction battery in a predetermined manner to create conditions favorable for estimating the capacity.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: October 5, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Heinrich Enslin, Jeffery R. Grimes
  • Patent number: 11133682
    Abstract: A battery charging and balancing circuit, for charging a battery pack having a plurality of cells. The battery charging and balancing circuit having a detecting circuit to provide a balancing connection indicating signal; a charging circuit to charge the battery pack based on the cell voltages when the balancing connection indicating signal is valid, and to charge the battery voltage otherwise; and a balancing circuit to control the discharging switches coupled with the cells based on the cell voltages when the balancing connection indicating signal is valid.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: September 28, 2021
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Min Xu, Lei Du
  • Patent number: 11125826
    Abstract: An electronic device can include a battery, a battery charger configured to receive power from an external power source and supply at least one of a charging current or a charging voltage to the battery, and a battery charger controller coupled to charger and configured to control the battery charger. More specifically, the battery charger controller may be configured to control the charger to supply a first AC signal as at least a part of the charging current or charging voltage supplied to the battery, measure a second AC signal associated with the first AC signal, and determine an impedance of the battery at a frequency of interest from the first and second AC signals. The electronic device can also or alternatively include a variable load that may be controlled to supply a first AC signal as at least part of the discharging current or discharging voltage of the battery.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: September 21, 2021
    Assignee: Apple Inc.
    Inventors: Qing Liu, Eric G. Smith
  • Patent number: 11114866
    Abstract: An energy system for a motor vehicle and a method for charging at least one electrical energy storage device of the energy system.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: September 7, 2021
    Assignee: AUDI AG
    Inventor: Roman Straßer
  • Patent number: 11110817
    Abstract: Provided is an equalization control device that can perform ex-post adjustment of a threshold serving as a reference when equalizing cell voltages of multiple cells. An equalization control device has a voltage detection unit that individually detects each cell voltage in a plurality of cells, an individual discharge unit that individually discharges each cell, a setting unit that sets, in an updatable manner, a threshold as a reference value for comparing with the cell voltage detected by the voltage detection unit, and a control unit that controls the individual discharge unit. The control unit compares each cell voltage detected by the voltage detection unit with the threshold set by the setting unit, and performs control to selectively discharge a discharge target cell having a larger cell voltage than the threshold.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: September 7, 2021
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Naoya Koda, Shigeyuki Fujii
  • Patent number: 11108247
    Abstract: The present application discloses a method, apparatus, device and medium for equalization control of battery packs. The method may include: acquiring a voltage of each of a plurality of cells of the battery pack; on the condition that one or more voltages of the voltages of the plurality of cells are within a preset voltage interval, selecting a target State of Charge (SOC)-Open Circuit Voltage (OCV) curve from a charging SOC-OCV curve and a discharging SOC-OCV curve stored for the battery pack based on the voltages within the preset voltage interval; acquiring a target SOC of each cell based on the target SOC-OCV curve and the voltage of each cell; calculating, for each cell, a SOC difference between the target SOC of the cell and a reference SOC; calculating an equalizing time for each cell based on the SOC difference of each cell.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: August 31, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Shichao Li, Mingshu Du, Shenzhi Tang, Jian Ruan, Yanhua Lu, Wei Zhang
  • Patent number: 11101090
    Abstract: A digital signal output device includes: an operation switch including contacts, a first terminal to which a first voltage is applied and a second terminal from which the first voltage is outputted when the contacts are closed; a voltage switching unit configured to select a second voltage from among a plurality of constant voltages; a voltage determination unit configured to determine on a designated cycle whether or not a voltage outputted from the voltage switching unit has changed from the second voltage; and a digital signal generation unit configured to, when the voltage determination unit determines that the voltage has not changed from the second voltage, generate on every cycle a digital signal indicating a first state when the first voltage is outputted from the second terminal and a digital signal indicating the second state when the first voltage is not outputted therefrom.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: August 24, 2021
    Assignee: FANUC CORPORATION
    Inventors: Minoru Enomoto, Tetsuro Matsudaira
  • Patent number: 11095132
    Abstract: Embodiments of the present disclosure disclose a battery management system. In the system, a first microcontroller is connected to a second microcontroller; a battery monitoring module is configured to monitor a state of the battery pack and transmit the state of the battery pack to the first and the second microcontroller respectively via a state signal of the battery pack, and control the state of the battery pack according to a control instruction from the first and the second microcontroller; a sampling control module is configured to detect the state of a high voltage loop of the battery pack, and transmit the state of the high voltage loop to the first and the second microcontroller respectively via a state signal of the high voltage loop of the battery pack, and control the state of the high voltage loop according to a control instruction from the first and the second microcontroller.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: August 17, 2021
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Huixiu Luo, Baohai Du, Wei Zhang, Qiandeng Li
  • Patent number: 11095142
    Abstract: A battery pack of a power tool includes a plurality of cells connected in series, a controller, which is configured to detect a charge current and/or a discharge current of the plurality of cells, estimate remaining capacity of the plurality of cells at least base on an integral of the charge current and/or the discharge current of the plurality of cells over time and generate or select a power supply capability parameter for limiting power of the power tool at least base on the remaining capacity of the plurality of cells, and a memory, which is configured to store data related to the remaining capacity of the plurality of cells.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: August 17, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Zheng Geng, Dezhong Yang
  • Patent number: 11095147
    Abstract: A voltage supply unit is provided with a first output adapted to supply a first voltage to a first load and provided with a second output adapted to supply a second voltage to a second load. The voltage supply unit includes a first battery stack, a second battery stack and an electronic control unit, wherein the electronic control unit is adapted to regulate the energy state of the first battery stack to a first energy state, and to regulate the energy state of the second battery stack to a second energy state, where the first energy state differs from the second energy state. Power characteristics of the voltage supply unit can be optimized by allowing the energy states of the first and the second battery stacks to differ.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: August 17, 2021
    Assignee: VOLVO CAR CORPORATION
    Inventor: Andreas Eriksson
  • Patent number: 11065961
    Abstract: An electric circuit switches connection among a plurality of storage cell units including a first storage cell unit and a second storage cell unit, a load of the plurality of storage cell units, and a power supply supplying power to the plurality of storage cell units.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: July 20, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hiroki Ichikawa, Jun Ishikawa
  • Patent number: 11064783
    Abstract: A battery operated hair dryer includes a battery management and control module to control how to efficiently dry a user's hair while maintaining the health and charge of the battery.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: July 20, 2021
    Assignee: Follicle, Inc.
    Inventors: Eric Nelson, Christopher Rebholz, Erik Stafl, James Meredith, David Kirkland
  • Patent number: 11050267
    Abstract: A power supply system includes a plurality of batteries, a plurality of battery control devices, and a charging device configured to receive charging information of the batteries transmitted from the battery control devices. The batteries are connected in parallel. Each of the battery control devices is configured to set any one of the batteries as a target battery, and control a charging state of the target battery. Each of the battery control devices is configured to transmit and receive an internal resistance value obtained from the target battery to and from other battery control devices, and generate and transmit charging information of the target battery based on the internal resistance values of the batteries. The charging device is configured to execute charging processing of the batteries based on the charging information of the batteries.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: June 29, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Linyu Sun
  • Patent number: 11050247
    Abstract: The present teaching provides a power supply system capable of fully utilizing a plurality of batteries having different performances. A power supply system disclosed here includes a main line, a plurality of sweep modules, and a controller. Each of the sweep modules includes a battery module and an electric power circuit module. The electric power circuit module includes a switching device for connecting a connection state between the battery modules and the main line between connection and disconnection. The controller performs sweep control of sequentially switching the battery module connected to the main line among the plurality of battery modules. During an input of electric power from outside, the controller disconnects the battery module whose SOC level satisfies a high SOC condition from the main line (S7), and continues sweep control (S8, S9).
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: June 29, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Juni Yasoshima, Junta Izumi, Kenji Kimura, Toshihiro Katsuda, Kohei Matsuura, Junichi Matsumoto, Shuji Tomura, Shigeaki Goto, Naoki Yanagizawa, Kyosuke Tanemura, Kazuo Ootsuka, Takayuki Ban, Hironobu Nishi
  • Patent number: 11050283
    Abstract: The disclosed apparatus and method is a closed loop system that obtains, stores and transfers motive energy. Preferably, the majority of the electricity generated is utilized to service a load or supplied to the grid. A portion of the electric power produced is used to recharge the batteries for subsequent use of the electric motor. The system controls and manages the battery power by controlling the charging and discharging of the battery reservoir via a series of electrical and mechanical innovations controlled by electronic instruction using a series of devices to analyze, optimize and perform power production and charging functions in sequence to achieve its purpose.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: June 29, 2021
    Assignee: Klepfer Holdings, LLC
    Inventors: George Mitri, Don Klepfer
  • Patent number: 11050288
    Abstract: In a storage-battery control system, an insulating communication unit couples a controller to a battery module constituting a storage battery unit that outputs a predetermined high voltage value. A power supply line is further provided for supplying electric power output from a controller DC/DC, i.e., a controller-side voltage converter for the controller, to the battery module, so that electric power is collectively supplied via the power supply line to a module CPU and a module-side insulating circuit both consuming electric power in the battery module. A secondary battery in the battery module supplies electric power to only a cell-voltage detector.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: June 29, 2021
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takahiro Kamikawa, Masayuki Kobayashi, Takayuki Mino
  • Patent number: 11046324
    Abstract: A control device for a multi-stage automatic transmission-equipped vehicle includes a hydraulic power controller, a combustion controller configured to, if a predetermined combustion stop condition is satisfied when the vehicle is traveling, perform deceleration-period combustion stop control, and limit combustion restart triggered by a reduction in rotational speed of an internal combustion engine, during execution of the deceleration-period combustion stop control, and a motoring controller configured to control the rotational drive of the internal combustion engine by a motor during execution of the deceleration-period combustion stop control so that the rotational speed of the internal combustion engine is maintained at a predetermined rotational speed during a period of time from the time that the rotational speed of the internal combustion engine decreases to the predetermined rotational speed until downshifting to a predetermined gear ratio is completed.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: June 29, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Kentaro Yanagisawa, Ryohei Yasutomi, Hidemasa Tomiyori, Hisanobu Okada, Tatsuya Matsukawa, Yukihiro Soeda, Tatsuo Sasaki, Daisaku Shiraishi, Tetsutaka Shibata, Keiichi Hiwatashi, Yuichiro Akiya
  • Patent number: 11043824
    Abstract: A method to charge a battery pack including a plurality of cells connected in parallel, the method including setting a plurality of set cell charging current, a set cell charging current for each cell of the battery pack; charging the battery back with a total current from a single current source; sensing a plurality of cell currents which flows through each cell of the battery pack; comparing a value proportional to each set cell charging current with a value proportional to the cell current for the same cell; and modulating each cell current on the basis of the comparison for the same cell. A battery charging circuit for a battery pack is also provided.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: June 22, 2021
    Assignee: Datalogic IP Tech S.r.l.
    Inventors: Sandro Codato, Paolo Mazzocato
  • Patent number: 11043821
    Abstract: In a power storage system, a management device calculates a state of power (SOP) of a whole of a plurality of power storage blocks connected in parallel based on an SOP of each of the plurality of power storage blocks. At least one of the plurality of power storage blocks is disconnected from the power storage system, and when at least one switch is turned on to return at least one disconnected power storage block to the power storage system having the parallel-connected power storage blocks, the management device calculates an SOP of a whole of the power storage blocks after a return of the at least one power storage block based on a deviation in current between each of the power storage blocks including the at least one returned power storage block to determine an upper limit level of power or current flowing into a power converter.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: June 22, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shinya Nishikawa, Kazufumi Nishikawa, Tohru Watanabe
  • Patent number: 11027589
    Abstract: An example cooling system for an electric includes an electric motor having a supply opening for receiving coolant and a discharge opening for expelling coolant. The discharge opening is connected to the supply opening via a coolant circuit including a first return line in which a heat exchanger is arranged, a bypass line, and a second return line. The discharge opening is connected to the supply opening by both the first return line and the bypass line, and the bypass line bypasses the heat exchanger arranged in the first return line. A battery is arranged in the second return line, and the second return line is selectively connected to a short-circuit line which causes coolant to flow from a point downstream of the battery and return to the second return line upstream of the battery. Further, a heat accumulator is arranged in the short-circuit line.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: June 8, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Hans Guenter Quix, Lars Kaufmann, Thomas Zenner, Mehmet Toeremis
  • Patent number: 11018382
    Abstract: A method for assigning a unique number to a cell module controller including applying unique number assignment signals to one or more resistor units connected to one or more cell module controllers, respectively, through a main BMS and assigning unique numbers to one or more cell module controllers based on voltage values of the unique number assignment signals applied to one or more resistor units, respectively.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: May 25, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jun Cheol Park, Keunwook Lee
  • Patent number: 11001150
    Abstract: A battery pack may include: a plurality of cell stacks; a plurality of monitoring circuits configured to detect voltages of a plurality of cells included in a corresponding cell stack among the cell stacks; a plurality of current measurement circuits configured to measure current consumption of a corresponding monitoring circuit among the monitoring circuits; a plurality of current adjustment circuits configured to adjust a discharge current of a corresponding cell stack among the cell stacks; and a battery controller configured to receive a current consumption measurement result of the monitoring circuits from the current measurement circuits, to calculate current consumption deviation between the monitoring circuits based on the current consumption measurement result of the monitoring circuits, and to control the current adjustment circuits based on the current consumption deviation.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: May 11, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Takao Hidaka
  • Patent number: 10998547
    Abstract: There is provided a negative electrode current collector that is used in contact with an aqueous electrolyte solution in an aqueous lithium ion secondary battery, including a surface in contact with the aqueous electrolyte solution, the surface including a material containing at least one selected from the group consisting of Ti, Pb, Zn, Sn, Mg, Zr and In as a main component.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: May 4, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Suyama, Hideki Nakayama
  • Patent number: 10992147
    Abstract: An electric propulsion system for a mobile platform includes a battery system connected to positive and negative bus rails, an accessory load having a rotary electric machine, a traction power inverter module (“TPIM”), and an accessory load, switches configured to transition the battery modules to a series-connected (“S-connected”) configuration during a direct current fast-charging (“DCFC”) operation of the battery system, and a controller. When battery modules of the battery system are connected in series during a direct current fast-charging (“DCFC”) operation, the controller executes a diagnostic method to determine bus rail voltages on the positive and negative bus rails and a mid-bus voltage, identifies a diagnosed electrical condition of the electric propulsion system by comparing the voltages to expected values or ranges, and executes a control action in response to the diagnosed electrical condition.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: April 27, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Shifang Li, William T. Ivan, Brendan M. Conlon, Yue Fan
  • Patent number: 10992145
    Abstract: A system comprises a processor, configured to perform balancing on a commanded cell referring to a reference cell, and responsive to detecting balancing time exceeding a threshold time and state of charge (SOC) difference being above a tolerance, abort the balancing, and generate an error message. The threshold time depends on an average balancing time calculated using the SOC difference, a predetermined commanded cell capacity, and a predetermined balancing current.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: April 27, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Rui Wang, Xu Wang, Patterson Kaduvinal Abraham
  • Patent number: 10985601
    Abstract: A system for providing power is provided including an uninterruptible power supply (UPS) coupled to a first power source, the UPS including at least one battery therein; at least one external battery module (EBM) coupled to the UPS and a second power source, the second power source being different and separate from the first power source. Each of the at least one EBMs include at least one battery string; and a super charger coupled to the at least one battery string and the at least one battery in the UPS, the super charger being configured to charge the at least one battery string and the at least one battery in the UPS when power from the first power source is removed. EBMs and UPSs are also provided herein.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: April 20, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventors: Pradeep K. Nandam, David G. Miller, Jeffery J. Pankau, Paul Michael Lukosius, Thomas J. Savage