To Determine Plural Cell Condition Patents (Class 324/434)
  • Patent number: 11336198
    Abstract: The present invention relates to a system for generating a direct current power output from an alternating current (103) in a primary wire (3), wherein the system comprises: at least one core (104) configured to be located around the primary wire (3); at least one secondary winding (22, 24) arranged around the at least one core (104), wherein each winding (22, 24), together with the at least one core (104) and the primary wire (3), forms a current transformer unit, and wherein each secondary winding (22, 24) has a first end and a second end; for each secondary winding (22, 24), a rectifier (10), wherein each rectifier (10) is configured to convert an alternating current to a direct current, and wherein each rectifier (10) comprises two AC connections for alternating current and two DC connections for direct current, wherein the first end and the second end of the secondary winding (22, 24) are connected to the AC connections of the rectifier (10); for each secondary winding (22, 24), a shunting unit arranged
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: May 17, 2022
    Assignee: LAKI POWER EHF.
    Inventor: Oskar H. Valtysson
  • Patent number: 11329324
    Abstract: An energy storage system has one or more energy storage units, each energy storage unit including one or more energy storage modules, and each energy storage module including a plurality of electrochemical energy storage devices connected in series. A DC switching device is provided in series with the or each energy storage unit. The DC switching device includes a semiconductor device and a rectifying unit in parallel with the semiconductor device.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: May 10, 2022
    Assignee: SIEMENS ENERGY AS
    Inventors: Sivert Eliassen, Roy Holen
  • Patent number: 11307256
    Abstract: A diagnostic apparatus includes a capacitor capable of being connected in parallel with a first battery, first switches that switch the connection state between a plurality of the first batteries and the capacitor, a detection circuit, a second switch that switches the connection state between the capacitor and the detection circuit, a changeover switch that switches the connection state between a second battery and the capacitor, a controller, and a diagnostic unit. The controller turns on the changeover switch to apply a voltage to the capacitor from the second battery, the detection circuit subsequently detects a potential difference or a discharge current, and the diagnostic unit diagnoses at least one of the capacitor, a lowermost first switch, and the second switch.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: April 19, 2022
    Assignee: Marelli Corporation
    Inventors: Masanao Shimazaki, Yoshiyuki Kikuchi, Junya Tanaka
  • Patent number: 11243256
    Abstract: A system and a method of diagnosing a state of a low-voltage battery, in which, in order to diagnose the state of a low-voltage battery (12V aux battery) provided at a low-voltage side, a daisy chain circuit unit receives a voltage from the low-voltage battery and outputs one or more result signals, and an isolator unit, which electrically insulates a high-voltage side and the low-voltage side, converts the outputted one or more result signals and provides the converted signals to a control unit, thereby diagnosing a state of the low-voltage battery at the low-voltage side by using the control unit provided at the high-voltage side.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: February 8, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventor: In Ho Nam
  • Patent number: 11231464
    Abstract: A monitoring apparatus includes: a monitoring portion that monitors a voltage of each of battery cells connected in series, each of the battery cells having an electrode terminal; and a wiring portion that connects the monitoring portion and the electrode terminal. The wiring portion includes a first flexible substrate and a second substrate that have flexibility and are integrally linked with each other. A linking part where the first flexible substrate and the second flexible substrate are linked is bent. The first flexible substrate is connected with the electrode terminal. The second flexible substrate is connected with the monitoring portion. One of the first flexible substrate and the second flexible substrate includes an arm. Another of the first flexible substrate and the second flexible substrate other than the one including the arm includes a slit. The arm is fixed to the slit, causing the linking part to be reinforced.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: January 25, 2022
    Assignee: DENSO CORPORATION
    Inventors: Masakazu Kouda, Shinsuke Kawamoto, Hayato Mizoguchi, Ryo Yamakawa
  • Patent number: 11209493
    Abstract: A method of detecting a latent fault of at least one cell among a plurality of cells in an energy storage system, and a control unit performing the method, are provided. A method of a control unit of detecting a latent fault of at least one cell among a plurality of cells in an energy storage system is also provided. The method comprises determining State of Health Cell Capacity, SoHCC, and Open Circuit Voltage, OCV, of a selected cell; wherein the selected cell is indicated to have a latent fault if a determined value of the SoHCC of the selected cell is lower than a reference value for the SoHCC and if a determined value of the OCV of the selected cell is higher than a reference value for the OCV.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: December 28, 2021
    Assignee: Volvo Car Corporation
    Inventors: Leopold Werberg, Annika Tidblad Ahlberg, Nicklas Leuchovius
  • Patent number: 11205951
    Abstract: A power conversion device comprises: a DC link capacitor charged with a DC power supplied from a power supply part; a fuse part, for breaking a current which is output from or supplied to the power supply part and has a first breaking magnitude or greater; a relay part which comprises a first relay for connecting a positive terminal of the fuse part to a positive terminal of the DC link capacitor and a second relay for connecting a negative terminal of the fuse part to a negative terminal of the DC link capacitor; an initial charge part, for charging the DC link capacitor by using DC power supplied from the power supply part; and a power conversion part for converting the direct-current power supplied from the power supply part into AC power when the DC link capacitor has been charged and supplying the alternating-current power to a load terminal.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: December 21, 2021
    Assignee: LSIS CO., LTD.
    Inventor: Jae-Hoon Jang
  • Patent number: 11169210
    Abstract: An apparatus and method for diagnosing a short circuit accident occurring at a negative electrode contactor of a battery pack. This apparatus diagnoses a negative electrode contactor of a battery pack, which includes a positive electrode contactor provided on a charge-discharge path connected to a positive electrode terminal and a negative electrode contactor provided on a charge-discharge path connected to a negative electrode terminal.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 9, 2021
    Inventor: Jeong-Joo Song
  • Patent number: 11165267
    Abstract: A cell module is provided for a traction battery of a vehicle. The cell module includes a plurality of cells arranged in a series circuit and also includes at least two cell monitoring circuits for identifying a voltage applied between two poles of each cell of the plurality of cells. Each cell monitoring circuit of the two cell monitoring circuits has first and second voltage supply connections. The first voltage supply connection is coupled to a positive pole of a first cell and the second voltage supply connection is coupled to a negative pole of a second cell. The cell module further includes a switching apparatus that selectively couples the first voltage supply connection of a first cell monitoring circuit and the second voltage supply connection of a second cell monitoring circuit to a respective one of two positive poles or to one of two negative poles of different cells.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: November 2, 2021
    Inventor: Marcus Zacher
  • Patent number: 11163014
    Abstract: An electrical leakage determination system that determines if an electrical leakage occurs includes a capacitor having first and second ends connected to a cathode side power supply path and a grounding section and a switch disposed in an electrical path formed parallel to the capacitor. When the capacitor discharges and a predetermined period has elapsed after the controller sets an energized state between the cathode-side power supply path and the grounding section by bringing the switch to an energizing position, the controller allows the capacitor to charge by setting an energization shut down state between the cathode-side power supply path and the grounding section by bringing the switch to an energization shut down position. The controller subsequently detects a voltage value of the capacitor and determines if the electrical leakage is either present or absent based on the voltage value.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: November 2, 2021
    Assignee: DENSO CORPORATION
    Inventors: Toru Wakimoto, Yusuke Shindo, Masakazu Kouda
  • Patent number: 11133533
    Abstract: Provided is a differential voltage measurement device with enhanced measurement accuracy. A differential amplifying unit outputs a voltage corresponding to a difference voltage between a voltage held by the first capacitor and a voltage held by the second capacitor. The ?COM connects a battery cell to both ends of the first capacitor, and connects the cell battery to both ends of the second after the first capacitor holds the voltage across the cell battery. SW disconnects the electrical connection between the first capacitor and the negative electrode of and the negative electrode of the cell battery. ?COM, after the first capacitor holds the voltage across the cell battery, turns off the SW.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: September 28, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Jian Wang, Hironao Fujii
  • Patent number: 11094969
    Abstract: A battery pack includes a housing, a battery cell group accommodated in the housing, a plurality of battery pack connection terminals coupled to the connection terminals of an electrical device, including a battery pack positive power terminal electrically connected to a positive pole of the battery cell group, a battery pack negative power terminal electrically connected to a negative pole of the battery cell group, a first battery pack terminal to transmit a first type of data, and a second battery pack terminal to transmit a second type of data. Also, a data transmission method between the battery pack and the electrical device enables data collection for data analysis while ensuring normal operation of the battery pack and the electrical device.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: August 17, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Dezhong Yang, Zhao Hu, Dongyue Wang, Yang Wang, Yunfeng Hu
  • Patent number: 11041911
    Abstract: In a sampling circuit, a single cell in a series battery pack is isolated from a voltage divider resistor in a bleeder circuit by using a first isolation sampling switch, so as to prevent a drain current of the single cell. In addition, sampling errors in sampling voltages collected by the sampling circuit may be offset during differential calculation.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: June 22, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Denghai Pan, Zejie Lv, Yuanzhong Wu
  • Patent number: 10991991
    Abstract: A vehicle includes a traction battery having cells and at least one controller. The controller is programmed to charge and discharge the traction battery according to a net current for the traction battery derived from sets of temperature-based current values, each of the sets corresponding to a different one of the cells, and each of the values for a given one of the sets corresponding to a different zone of the cell.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: April 27, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Chuan He, Szushen Peter Ho, Xu Wang
  • Patent number: 10978751
    Abstract: A battery system has a first cell balancing circuit and a second cell balancing circuit with a bus bar disposed therebetween. The battery system further includes an integrated circuit measuring a first voltage between two sense lines coupled to opposite ends of the bus bar while the first cell balancing circuit and a second cell balancing circuit are turned off, and determining a voltage value based on the first voltage. A microcontroller receives the voltage value and determines that an open circuit condition exists in the bus bar if the voltage value is greater than a threshold voltage value.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: April 13, 2021
    Assignee: LG Chem, Ltd.
    Inventor: Greg Bober
  • Patent number: 10948548
    Abstract: Estimating a battery state of health (SOH) is described. The state of heath is estimated by obtaining a partial charge or discharge capacity of a target battery in a state of charge (SOC) interval of each of a plurality of SOCs. First dV/dSOC data is separately calculated for each SOC in an mth preset battery capacity based on the mth preset battery capacity and the partial charge or discharge capacity in the SOC interval of each SOC. A smallest overall dV/dSOC data deviation is determined from all overall dV/dSOC data deviations corresponding to M preset battery capacities. A preset battery capacity is determined corresponding to the smallest overall dV/dSOC data deviation as a retention capacity of an aged target battery. The retention capacity of the aged target battery is divided by a retention capacity of the target battery in a new battery state, to obtain the SOH estimate of the target battery.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: March 16, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Kejie Gao, Zhongxiao Liu, Jianbo Zhang, Zhe Li, Zhiwei Wu, Zuqi Liu
  • Patent number: 10921378
    Abstract: A system for monitoring battery cells of a battery includes a capacitor, a processor, and a controller. The controller is configured to connect the capacitor with a first battery cell to charge the capacitor to a voltage of the first battery cell and then (i) connect the capacitor with a second battery cell to form a circuit having an output that is a voltage difference of the capacitor and the second battery cell and (ii) connect the output to the processor for the processor to measure the voltage difference. The voltage difference is the voltage difference between the first battery cell and the second battery cell.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: February 16, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Chingchi Chen, Benjamin A. Tabatowski-Bush, John Paul Gibeau, Kevin Vander Laan, Baojin Wang
  • Patent number: 10908225
    Abstract: Estimating a battery state of health (SOH) is described. The state of heath is estimated by obtaining a partial charge or discharge capacity of a target battery in a state of charge (SOC) interval of each of a plurality of SOCs. First dV/dSOC data is separately calculated for each SOC in an mth preset battery capacity based on the mth preset battery capacity and the partial charge or discharge capacity in the SOC interval of each SOC. A smallest overall dV/dSOC data deviation is determined from all overall dV/dSOC data deviations corresponding to M preset battery capacities. A preset battery capacity is determined corresponding to the smallest overall dV/dSOC data deviation as a retention capacity of an aged target battery. The retention capacity of the aged target battery is divided by a retention capacity of the target battery in a new battery state, to obtain the SOH estimate of the target battery.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: February 2, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Kejie Gao, Zhongxiao Liu, Jianbo Zhang, Zhe Li, Zhiwei Wu, Zuqi Liu
  • Patent number: 10845423
    Abstract: A power storage member monitoring device of the present disclosure includes a circuit that designates a monitor target power storage member based on results of voltage measurement carried out more than once on each of series-connected power storage blocks, each of the power storage blocks including at least one power storage member.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: November 24, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Masashi Murasaki
  • Patent number: 10838013
    Abstract: A voltage detection unit detects voltage between both ends of a power storage unit. A current detection unit detects current flowing through the power storage unit. A control unit estimates a state of charge (SOC) of the power storage unit using an open circuit voltage (OCV) method based on the voltage detected by the voltage detection unit and estimates the SOC of the power storage unit using a current integration method based on the current detected by the current detection unit. The control unit compares the SOC estimated using the OCV method with the SOC estimated using the current integration method to determine whether micro short circuit occurs in the power storage unit.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 17, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroshi Tenmyo, Shinichi Yuasa, Tomokazu Sada
  • Patent number: 10663510
    Abstract: An insulation detecting method for the electric machine is provided. The leakage current leakage and the leakage resistance are detected and determined by the output potential waveform resulted from the inversion operation of the first switch and the second switch of the driver. Besides, the signal is amplified through the software or the amplification circuit coupled between the electric machine and the driver to detect the leakage resistance approximately to 5M?.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: May 26, 2020
    Assignee: HIWIN MIKROSYSTEM CORP.
    Inventors: Alecksey Anuchin, Dmitry Shpak, Alexandr Zharkov
  • Patent number: 10605836
    Abstract: A voltage detection device comprises a voltage detection circuit, which is a fully-differential type and a control circuit for controlling an operation of the voltage detection circuit. The voltage detection circuit includes a switched capacitor circuit, a differential amplifier, a common mode feedback circuit for controlling a common mode level of an output voltage of the differential amplifier and a bias circuit for supplying biases to the differential amplifier and the common mode feedback circuit. The control circuit controls the voltage detection circuit to execute intermittently a detection operation for detecting the voltage. The control circuit controls the voltage detection circuit to execute a pseudo operation of an execution period, which is shorter than that of the detection operation, during a transition period from a stop state, in which no detection operation is executed, to the operation state, in which the detection operation is executed.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: March 31, 2020
    Assignee: DENSO CORPORATION
    Inventor: Kazutaka Honda
  • Patent number: 10516278
    Abstract: A measurement circuit measures a first integrated amount (integrated current amount) of a current which flows from a battery to a load. The first integrated amount is an amount in a first time period in which the measurement circuit operates. A detection circuit detects the number of operations of the load. A calculation circuit calculates a second integrated amount (total integrated-current amount) of the current on the basis of the number of operations and the first integrated amount. The second integrated amount is an amount in a third time period including a second time period in which the measurement circuit stops.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: December 24, 2019
    Assignee: FUJITSU LIMITED
    Inventor: Kenichi Kawasaki
  • Patent number: 10502696
    Abstract: The purpose is to reliably calculate a water vapor amount at a given position. A water vapor observing apparatus may include a transmitting part (which may also be referred to as a transmitter circuitry) configured to transmit a first transmission wave and a second transmission wave having different frequencies, a receiving part (which may also be referred to as a receiver circuitry) configured to receive, as reception waves, reflection waves caused by the transmission waves reflected on and returned from a ground surface portion or a water surface after passing through water vapor, and an arithmetic processor configured to calculate an amount of the water vapor in a passing area of the transmission waves based on first reception information generated from a first reception wave obtained from the first transmission wave, and second reception information generated from a second reception wave obtained from the second transmission wave.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: December 10, 2019
    Assignee: Furuno Electric Co., Ltd.
    Inventor: Masahiro Minowa
  • Patent number: 10497990
    Abstract: A lead-acid battery has a plurality of individual cells and a plurality of measurement circuits which are mounted on the respective individual cells in a manner integrated in the lead-acid battery. Each measurement circuit is designed to measure a respective individual cell voltage. A method is provided for measuring individual cell voltages of the lead-acid battery having the plurality of measurement circuits integrated in the battery and arranged on the individual cells. In the method, the respective individual cell voltages are measured using the measurement circuits.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: December 3, 2019
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Peter Stigler, Michael Hallmannsegger
  • Patent number: 10479212
    Abstract: The present invention provides a voltage acquisition circuit. The voltage acquisition circuit includes a voltage division and sampling module, a voltage to frequency conversion module, and an isolation module. The voltage to frequency conversion module is electrically coupled to the voltage division and sampling module and the isolation module. The voltage division and sampling module is configured to divide and sample a total voltage of a battery pack, and output a voltage signal to the voltage to frequency conversion module. The voltage to frequency conversion module is configured to convert the voltage signal into a first frequency signal, and output the first frequency signal to the isolation module. The isolation module is configured to electrically isolate the first frequency signal, to generate a second frequency signal. The present invention further provides an electric vehicle with the voltage acquisition circuit.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: November 19, 2019
    Assignee: Shenzhen Anding New Energy Technology Development Co., Ltd.
    Inventor: Hong Deng
  • Patent number: 10436820
    Abstract: A signal switching device and a test system are disclosed. A printed wire which is connected with a test circuit can be selected flexibly according to actual situation, and a sufficient distance between adjacent tested printed wires/test printed wires which are used for transmitting a differential signal can be maintained, such that signal interference between the printed wires would not be easily generated. Signals can be effectively separated from each other, and thus the technical problem that signal interference would easily be generated between adjacent tested printed wires/test printed wires which are used for transmitting a differential signal can be solved.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: October 8, 2019
    Assignees: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Qingcheng Zuo, Chao Liang
  • Patent number: 10388995
    Abstract: A monitoring apparatus for an energy storage device provided at a movable body and electrically connected to a load of the movable body via a switch, includes a monitoring unit supplied with power from the energy storage device. The monitoring unit executes monitoring operation of bringing the switch from a closed state into an opened state under a condition that the energy storage device has voltage not more than a discharge voltage threshold, and bringing the switch from the opened state into the closed state under a condition that the switch is in the opened state and the energy storage device satisfies a predetermined discharge recovery condition, and decreases power consumption by extending an interval of the monitoring operation when the load is under suspension while the switch is in the opened state, in comparison to a case where the load is in operation.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: August 20, 2019
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Ryo Matsubara, Takeyuki Shiraishi
  • Patent number: 10374444
    Abstract: A battery management system is provided that controls at least a stack of battery cells. The battery management system may detect stack voltage and current. Characteristics of each battery cell in the stack may be monitored. The battery management system may detect ground fault within the stack of battery cells. Communication breakdown and/or failure in the battery management system may also be detected.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: August 6, 2019
    Assignee: ELITE POWER INNOVATIONS, LLC.
    Inventors: Michael Alan Worry, John Ellis Corman, Stefan Erik Janhunen, Jonathan Thomas Malton, Nathanael Dimitro Wennyk
  • Patent number: 10367365
    Abstract: A method used between a portable device and a battery pack including at least one battery cell includes: transmitting information for the battery cell from the portable device to the battery pack via the connecting interface or from the battery pack to the portable device via the connecting interface; and according to the information for the battery cell, performing at least one control operation that is associated with the battery cell; wherein there is an analog communication from the battery cell of the battery pack to the portable device to provide a voltage level actually from the battery cell.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: July 30, 2019
    Assignee: MEDIATEK INC.
    Inventors: Jui-Chi Wu, Chi-Ming Lee, Chih-Yuan Hsu
  • Patent number: 10365333
    Abstract: The present invention relates to a transformer relay and a battery voltage measurement system using the same and the transformer relay includes: a transformer transforming voltage of a voltage measurement signal according to a wiring ratio of a first wiring and a second wiring; and a relay transferring voltage of a battery while an operation state is changed to an On state when the transformed voltage of the voltage measurement signal is input and the battery voltage measurement system using the transformer relay, includes: the transformer; and a measurement unit measuring a battery voltage value by receiving the voltage of the battery from the relay.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 30, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Hyeon Jin Song, Yanglim Choi
  • Patent number: 10330715
    Abstract: In accordance with one illustrative embodiment, a system for determining a self-discharge current characteristic of a storage cell (or a bank of storage cells) includes a voltage source, first and second voltage measurement circuits, a current measurement circuit, and a processor. The voltage source provides a potentiostat voltage to the storage cell coupled to the system. The first voltage measurement circuit provides a first voltage resolution for measuring an open circuit voltage across a pair of terminals of the storage cell. The second voltage measurement circuit provides a second voltage resolution that is significantly higher than the first voltage resolution for measuring a terminal voltage at one of the pair of terminals of the storage cell. The processor executes a test procedure by using the voltage source, the first and second voltage measurement circuits, and the current measurement circuit, to determine the self-discharge leakage current characteristic of the storage cell.
    Type: Grant
    Filed: December 11, 2016
    Date of Patent: June 25, 2019
    Assignee: Keysight Technologies, Inc.
    Inventors: Edward Brorein, Marko Vulovic, Bryan Boswell, Robert Zollo
  • Patent number: 10324119
    Abstract: The present disclosure relates to an insulation resistance measuring device and method, including a parameter resistance connected to a negative electrode terminal of a battery; a shunt resistance connectable to the parameter resistance; a current detection circuit including an operational amplifier configured to detect and output voltage between both ends of the shunt resistance; and a control unit configured to determine the insulation resistance of the battery using a switch control terminal configured to control a switch connected between the parameter resistance and the shunt resistance to an ON or OFF state, a detection signal output terminal configured to selectively apply a first high voltage signal and a first low voltage signal to the shunt resistance, a control signal output terminal configured to apply a control voltage signal to the operational amplifier to adjust an output voltage of the operational amplifier within a predetermined range, an ADC connected to an output terminal of the operational
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: June 18, 2019
    Assignee: LG CHEM, LTD.
    Inventor: Ho-Been Choi
  • Patent number: 10311985
    Abstract: A generator is installed on and provides electrical power from a turbine by converting the turbine's mechanical energy to electricity. The generated electrical power is used to power controls of the turbine so that the turbine can remain in use through its own energy. The turbine can be a safety-related turbine in a nuclear power plant, such that, through the generator, loss of plant power will not result in loss of use of the turbine and safety-related functions powered by the same. Appropriate circuitry and electrical connections condition the generator to work in tandem with any other power sources present, while providing electrical power with properties required to safely power the controls.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: June 4, 2019
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Arthur M. Thinguldstad, Mark A. Bergman
  • Patent number: 10266064
    Abstract: A voltage detecting apparatus includes: an assembled battery made of plural cells, a self-diagnostic circuit, and a measuring part for measuring the plural cells or measuring a diagnostic voltage generated by the self-diagnostic circuit. Electric power is supplied to the self-diagnostic circuit by a charge pump circuit. The self-diagnostic circuit includes plural circuit elements connected in series, and a current path connected to the measuring part and formed in correspondence with each of the plural circuit elements, and the measuring part includes a multiplexer for switching a state of connection between each of the current paths and the circuit network. The measuring part determines whether or not the circuit network is normal based on a voltage dividing ratio by the circuit element corresponding to the current path switched by the multiplexer.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: April 23, 2019
    Assignee: YAZAKI CORPORATION
    Inventor: Takaaki Izawa
  • Patent number: 10263434
    Abstract: A charge and discharge device (10) includes: a battery unit (110) in which m (m is an integer of 3 or more) battery cells (112) that are connected in series are grouped into plural groups (114) including n (n is an integer equal to or larger than 2 and smaller than m) battery cells (112) that are continuously arranged and a part of the battery cells (112) that belong to a certain group is shared by a different group; a cell balance unit (120) that is provided for each group (114) and uniformizes voltages of the battery cells (112) that belong to the group (114); and a control unit (130) that stops the operation of the cell balance unit (120), when a voltage difference of the battery cells (112) that belong to an arbitrary one of the groups (114) is within a predetermined value, and when a total average voltage in all the battery cells (112) and a partial average voltage which is an average voltage of the battery cells (112) that belong to the arbitrary group (114) satisfy a specific condition, the cell balanc
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: April 16, 2019
    Assignee: NEC Corporation
    Inventors: Junichi Miyamoto, Shingo Takahashi, Yuan Luo, Nobuhide Yoshida
  • Patent number: 10261131
    Abstract: An inspection method for a secondary battery according to the invention includes: a first aging treatment process for performing aging treatment on the secondary battery that has initially been charged at a first temperature; a first voltage measurement process; a second aging treatment process for performing the aging treatment on the secondary battery at a second temperature; a second voltage measurement process; a self-discharge amount computation process; a non-temperature dependent failure determination process for determining non-temperature dependent failure that does not depend on a relationship between a self-discharge amount and a temperature in accordance with the measured self-discharge amount; and a temperature dependent failure determination process for determining temperature dependent failure that depends on the relationship between the self-discharge amount and the temperature in accordance with the self-discharge amount, temperature dependency of which is suppressed.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: April 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshio Matsuyama, Tomohide Sumi, Yosuke Shimura
  • Patent number: 10261483
    Abstract: In a digitally controlled power source, a setting value of an output voltage therefrom is set in advance in the vicinity of an upper limit within a tolerable range of fluctuation. Even if a voltage drop is caused by starting currents that flow upon initial rise of DC-DC converters in a subsequent stage, such setting makes it possible to confine values of the output voltage within the tolerable range of fluctuation because the setting value of the output voltage is set in advance at a relatively high value. Accordingly, the starting currents in the DC-DC converters can be increased without restriction so that rise time for the power source can be shortened.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: April 16, 2019
    Assignee: FANUC CORPORATION
    Inventors: Masataka Tsuchimoto, Shouhei Kobayashi
  • Patent number: 10250187
    Abstract: A solar cell monitoring device includes: an inverter; connection boards which include multiple string circuits, respectively; a terminal block which is provided at an input side of the inverter, and includes multiple branch terminals which are connected to wires that are connected to the connection boards, respectively and supply direct current power to the inverter; detection elements which are provided at a side of the branch terminals; and a measurement unit which measures the currents of the wires which are detected by the detection elements.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: April 2, 2019
    Assignee: WOONZIE POWER TECHNIC CO., LTD.
    Inventor: Hyun A Chung
  • Patent number: 10236695
    Abstract: A connectivity check for a rechargeable energy storage system including a string of rechargeable energy storage cell modules in series. Each cell module has an individual rechargeable energy storage cell or plurality of rechargeable energy storage cells, a switch for use in a connection check, a monitoring and control circuit adapted for measuring a cell module voltage, a single common connection between a terminal of a rechargeable energy storage cell and the monitoring and control circuit within each module. To perform the connectivity check the switch is opened in one module, a cell voltage is measured in the module to give a first measured value, the switch is closed. The cell voltage is measured again to provide a second measured value, and a determination is made if there is a difference between the first and second measured values which would indicate a bad connection.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: March 19, 2019
    Assignee: VITO NV
    Inventor: Dominique Weyen
  • Patent number: 10227010
    Abstract: Various techniques described herein relate to electric vehicle power management system for managing a plurality of battery modules in a battery pack. Such electric vehicle power management system may include a plurality of battery management systems corresponding to a plurality of battery modules, and an energy management system for managing the plurality of battery management systems. The energy management system and the plurality of battery management systems may adopt master-slave wireless communication, and may use a single wireless frequency channel or a plurality of assigned wireless frequency channels.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: March 12, 2019
    Assignee: THUNDER POWER NEW ENERGY VEHICLE DEVELOPMENT COMPANY LIMITED
    Inventor: Yu-Ting Dai
  • Patent number: 10211653
    Abstract: Battery packs that include multiple battery cells that may be monitored using a reduced amount of circuitry and battery systems that may account for battery cell changes over aging and temperature.
    Type: Grant
    Filed: July 15, 2017
    Date of Patent: February 19, 2019
    Assignee: Apple Inc.
    Inventors: Karthik Kadirvel, Ankur Gupta, Hua Chen, Christopher C. Branson, David M. DeMuro, Alessandro Pelosi
  • Patent number: 10205275
    Abstract: A plug device for automatically plugging a display panel and a connector comprises a first linkage having a fixed end and a movable end that can approach or get away from the display panel at a plug location. The connector comprises a first connector head, a second connector head and a wire that connects the first and second connector heads, the connector is mounted on the first linkage, the first and second connector heads of the connector are respectively secured on the movable end and the fixed end of the first linkage. The second connector head is connected with a signal generator, and when the movable end approaches the display panel at the plug location, the first connector head is automatically plugged on the display panel. The plug device may be used in a method of automatically plugging a display panel with a connector.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: February 12, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Deng Pan, Fangqing Li, Wei Dai, Weiwei Wang, Wenhua Fu
  • Patent number: 10184908
    Abstract: A metal detector has a transformer unit (1), a transmitter unit (2), a receiver coil set (3), a signal processing unit (4) and a control unit (5). The transformer unit provides an input signal (sIN) with selectable operating frequency (fTX) to an amplifier stage (12), that is connected to a transmitter coil (21) that is coupled to first and second receiver coils (31, 32). The coil outputs are connected to the signal processing unit, which has a receiver unit (41) and a signal processor (42). A coupling transformer (13) has first and second windings (13A, 13B), connected to the output of the amplifier stage, and a third winding (13C), connected to the transmitter coil. The first and second windings are each connected at a first end to a supply voltage (+Ub). Each of the first and second windings has at least one tapping (141, 142, 143, 144; 141?, 142?, 143?, 144?) at a same turn number counted from the first end. The amplifier stage has first and second amplification wings (12A, 12B).
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: January 22, 2019
    Assignee: Mettler-Toledo Safeline Ltd.
    Inventor: David Lyon
  • Patent number: 10156613
    Abstract: An A/D conversion device acquires an inter-terminal signal of one or more battery cells when detecting a voltage across the battery cells. The A/D conversion device acquires a failure diagnosis signal during a failure diagnosis. A control unit causes the A/D conversion device to perform A/D conversion processing in a ?? mode or a hybrid mode, in which acquiring remaining bits of higher bits after subjecting the higher bits to a ?? type A/D conversion processing, when detecting the inter-terminal signal of the battery cells. The control unit causes the A/D conversion device to perform the A/D conversion processing in a cyclic mode or a hybrid mode, when detecting the failure diagnosis signal during the failure diagnosis.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: December 18, 2018
    Assignee: DENSO CORPORATION
    Inventors: Kazutaka Honda, Tomohiro Nezuka
  • Patent number: 10132835
    Abstract: A probe connector includes a probe body, a flexible sleeve body, a slit and a conductive fluid. The flexible sleeve body is connected to the probe body. The conductive fluid is received in the flexible sleeve body and electrically connected to the slit and the probe body. The slit is formed on one end of the flexible sleeve body opposite to the probe body, so as to define petal portions which are configured to be tightly closed together. When the slit is pressed to separate the petal portions, a portion of the conductive fluid seeps up from the flexible sleeve body via the slit.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: November 20, 2018
    Assignees: GLOBAL UNICHIP CORPORATION, TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chih-Chieh Liao, Yu-Min Sun, Chih-Feng Cheng
  • Patent number: 10120033
    Abstract: A battery monitoring system includes a battery sensor mounted between a plurality of batteries in a battery system for a vehicle using the plurality of batteries. The battery sensor according to an aspect of the present invention, which uses an ammeter resistor connected in series between a first battery and a second battery, includes: a first integrated circuit configured to receive voltages of both electrodes of the first battery and voltages of both terminals of the ammeter resistor to measure a first battery voltage and a one-directional current of the first and second batteries; and a second integrated circuit configured to receive voltages of both electrodes of the second battery to measure a second battery voltage, and receive the first battery voltage and the one-directional current of the first and second batteries from the first integrated circuit through a serial communication interface.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: November 6, 2018
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Tae Sun Cho
  • Patent number: 10048323
    Abstract: A power supply device includes: an assembled battery that is configured of N pieces of battery cells connected in series; (N+1) pieces of measurement lines that obtain analog signals corresponding to terminal potentials of the battery cells; a filter circuit that attenuates a specified frequency component of the inputted analog signals and outputs; and an analog/digital converter that converts the analog signals outputted from the filter circuit into digital signals. The filter circuit is configured of: (N+1) pieces of input terminals; (N+1) pieces of output terminals; (N+1) pieces of filter resistors; and (N+1) pieces of filter capacitors of which one ends respectively connected between the filter resistors and the output terminals and the other ends are connected to each other in common.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: August 14, 2018
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Jun Asakura, Tomoyuki Matsubara
  • Patent number: 10014699
    Abstract: Even with a large ripple voltage superposed on a voltage of a battery cell, the voltage of the battery cell can be measured accurately. In a battery monitoring device, a supply circuit, based on a reference voltage inputted from an assembled battery, generates a driving voltage for driving each of switching elements, of a selection circuit and supplies the driving voltage to the selection circuit. The reference voltage is inputted from the assembled battery to the supply circuit via a detecting filter circuit. As a result, a time constant of a route through which the reference voltage is inputted from the assembled battery to the supply circuit is approximately equal to time constants of detecting filter circuits.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: July 3, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hiroshi Iwasawa, Akihiko Kudo, Mitsuo Noda, Mutsumi Kikuchi, Tomonori Kanai
  • Patent number: 10012699
    Abstract: A battery monitor apparatus includes unit batteries connected in series; a battery pack including battery modules connected in series by conductive members, each battery module including two or more of the unit batteries; voltage detection ICs to detect voltages of the unit batteries and the conductive members in circuit intervals connected in series, by potential differences of the circuit intervals; and an electronic control unit to monitor states of the unit batteries. At least one voltage detection IC detects a voltage of at least one of the two unit batteries adjacent to a conductive member, and detects a voltage of the conductive member adjacent to the two unit batteries. The electronic control unit monitors the states, based on the voltages of the unit batteries, and one or more of the voltages of the conductive members detected by one of the voltage detection ICs.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: July 3, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Jun Muto