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    ENERGY TRANSFER CIRCUIT AND POWER STORAGE SYSTEM
    1.
    发明申请
    ENERGY TRANSFER CIRCUIT AND POWER STORAGE SYSTEM 有权

    公开(公告)号：US20220216703A1

    公开(公告)日：2022-07-07

    申请号：US17611211

    申请日：2020-04-27

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： MASAAKI KURANUKI

    IPC: H02J7/00 ,  H01M10/44

    Abstract: Cell selection circuit includes a plurality of first wiring switches, and that selectively connect one of both ends of a selected cell to first wiring and at least one second wiring switch that selectively connects the other end of both the ends of the selected cell to second wiring. Clamp circuit includes clamp switches for forming a closed loop including inductor in a state where cell selection circuit does not select any cell. Controller turns on all of a plurality of switching elements forming a discharge path after the clamp state is ended, and then turns on a part of a plurality of switching elements constituting clamp switch before the state is switched to a next clamp state.

    ENERGY TRANSFER CIRCUIT, AND ELECTRICITY STORAGE SYSTEM
    2.
    发明申请
    ENERGY TRANSFER CIRCUIT, AND ELECTRICITY STORAGE SYSTEM 有权

    公开(公告)号：US20220285949A1

    公开(公告)日：2022-09-08

    申请号：US17635689

    申请日：2020-09-08

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： MASAAKI KURANUKI

    IPC: H02J7/00

    Abstract: Cell selection circuit is provided between n cells connected in series, where n is an integer of 2 or more, and inductor, and is provided at both ends of the selected cell and both ends of inductor can be conductive. Clamp circuit includes at least one clamp switch for forming a closed loop including inductor in a state where cell selection circuit does not select any cells. Current detection circuit detects the value of the current flowing through inductor. Low-pass filter band-limits the detection value. Overcurrent detection circuit activates the protection of inductor when the band-limited detection value exceeds the threshold.

    ENERGY TRANSFER CIRCUIT AND POWER STORAGE SYSTEM
    3.
    发明申请
    ENERGY TRANSFER CIRCUIT AND POWER STORAGE SYSTEM 有权

    公开(公告)号：US20210351598A1

    公开(公告)日：2021-11-11

    申请号：US17286896

    申请日：2019-10-17

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： MASAAKI KURANUKI

    IPC: H02J7/00

    Abstract: Controller (13) transitions from a first state of controlling first wiring side switch (S1) and second wiring side switch (S4) connected to nodes on both sides of discharge cell (C1) to be discharged of n cells C1 to C4 to be in on state and clamp switch (Sc) to be in off state to a second state of controlling first wiring side switch (S1) and second wiring side switch (S4) connected to the nodes on the both sides of discharge cell (C1) to be in off state and clamp switch (Sc) to be in on state. Controller (13) inserts a dead time between the first state and the second state, the dead time being for controlling first wiring side switch (S1) and second wiring side switch (S4) connected to the nodes on both sides of discharge cell (C1) to be in off state and clamp switch (Sc) to in off state.

    ENERGY TRANSFER CIRCUIT AND POWER STORAGE SYSTEM
    5.
    发明申请
    ENERGY TRANSFER CIRCUIT AND POWER STORAGE SYSTEM 有权

    公开(公告)号：US20210313813A1

    公开(公告)日：2021-10-07

    申请号：US17266166

    申请日：2019-08-01

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： MASAAKI KURANUKI

    IPC: H02J7/00

    Abstract: The controller controls a cell selection circuit to electrically connect both ends of a cell to be discharged among n cells connected in series and both ends of the inductor for a predetermined time. Next, the controller controls the cell selection circuit to electrically cut off the n cells and the inductor, and turn on the clamp switch. Next, the controller turns off the clamp switch, and controls the cell selection circuit to electrically connect both ends of a cell to be charged among the n cells and both ends of the inductor for a predetermined time.

    POWER SOURCE SWITCHING DEVICE AND STORAGE BATTERY SYSTEM
    6.
    发明申请
    POWER SOURCE SWITCHING DEVICE AND STORAGE BATTERY SYSTEM 有权
    电源切换装置和存储电池系统

    公开(公告)号：US20160087426A1

    公开(公告)日：2016-03-24

    申请号：US14891347

    申请日：2014-06-23

    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

    Inventor： MASAAKI KURANUKI ,  MASAHIKO KUBO

    IPC: H02H7/12 ,  H02J3/00 ,  H02M5/42

    CPC classification number: H02M5/42 ,  H01H9/548 ,  H01H47/002 ,  H01H2047/003 ,  H02H7/1216 ,  H02J3/005 ,  H02J7/02 ,  H02J9/06 ,  H02J9/061 ,  H02M1/10

    Abstract: A third relay switches between an output of a first AC power source fed via a first relay and an output of a second AC power source fed via a second relay, and supplies the output after the switching to a load. A welding detection unit detects welding of the first relay. In order to switch the output of the first AC power source to the output of the second AC power source and supply the output of the second AC power source to the load, a power source switching control unit switches the first relay from the closed state to the open state, switches the third relay so as to select and feed the output of the second AC power source, and then prohibits switching of the second relay from the open state to the closed state until a first-relay welding detection processing by the welding detection unit is completed.

    Abstract translation: 第三继电器在经由第一继电器馈送的第一AC电源的输出和经由第二继电器馈送的第二AC电源的输出之间切换，并且在切换到负载之后提供输出。 焊接检测单元检测第一继电器的焊接。 为了将第一交流电源的输出切换到第二交流电源的输出并将第二交流电源的输出提供给负载，电源切换控制单元将第一继电器从关闭状态切换到 打开状态，切换第三继电器以选择并馈送第二交流电源的输出，然后禁止第二继电器从打开状态切换到关闭状态，直到通过焊接的第一次继电器焊接检测处理 检测单元完成。

    EQUALIZATION CIRCUIT AND POWER STORAGE SYSTEM
    9.
    发明申请
    EQUALIZATION CIRCUIT AND POWER STORAGE SYSTEM 有权

    公开(公告)号：US20210305816A1

    公开(公告)日：2021-09-30

    申请号：US17266173

    申请日：2019-08-01

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： MASAAKI KURANUKI

    IPC: H02J7/00 ,  H02J7/02 ,  G01R19/165 ,  H01M10/48 ,  H01M10/44

    Abstract: An equalization circuit includes a cell selection circuit that is provided between n cells and an inductor, and that can electrically connect both ends of any cell of the n cells to both ends of the inductor. An energy holding-consuming circuit can form a closed loop including the inductor when the cell selection circuit does not select any cell. The energy holding-consuming circuit also can form a closed loop of a first pattern with a small resistance component of the closed loop and a closed loop of a second pattern with a large resistance component of the closed loop.

    POWER SUPPLY SYSTEM, HEATING CONTROL METHOD, AND HEATING CONTROL PROGRAM
    10.
    发明申请
    POWER SUPPLY SYSTEM, HEATING CONTROL METHOD, AND HEATING CONTROL PROGRAM 有权

    公开(公告)号：US20250079552A1

    公开(公告)日：2025-03-06

    申请号：US18727124

    申请日：2022-12-21

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： MASAAKI KURANUKI

    IPC: H01M10/633 ,  B60L58/27 ,  H01M10/48 ,  H01M10/615 ,  H01M10/625

    Abstract: A heater heats a battery. A voltage measurement unit measures a voltage of the battery. A temperature measurement unit measures a temperature of the battery. A controller determines that the measured temperature of the battery, which is measured by the temperature measurement unit, is a temperature at which the heater is started, and controls a heating amount from the heater to the battery adaptively according to a voltage difference between the measured voltage during discharging of the battery and a reference voltage, based on the measured temperature of the battery. For instance, the controller increases the heating amount as a voltage difference between a discharging lower limit voltage and the measured voltage during low-temperature discharging of the battery becomes small.

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