Battery voltage control and regulation

    公开(公告)号:US11916428B2

    公开(公告)日:2024-02-27

    申请号:US17549021

    申请日:2021-12-13

    IPC分类号: H02J7/00 H02J7/34

    摘要: This disclosure includes novel ways of implementing a power supply that powers a load. A main battery source produces a main battery voltage; each of multiple auxiliary battery sources in a set produces a respective auxiliary battery voltage. A controller initially sets a battery supply voltage to the main battery voltage, the main battery voltage is supplied to a power converter. The controller then monitors a magnitude of the battery supply voltage and adjusts the battery supply voltage supplied to the power converter based on a comparison of the magnitude of the battery supply voltage with respect to a threshold level. The adjusted battery supply voltage is provided from a serial connection of the main battery source and a first auxiliary battery source in the set.

    WIRELESS POWER TRANSMISSION DEVICE, AND TRANSMISSION POWER CONTROL METHOD THEREFOR

    公开(公告)号:US20240063662A1

    公开(公告)日:2024-02-22

    申请号:US18497378

    申请日:2023-10-30

    IPC分类号: H02J50/12 H02J50/40 H02J7/34

    CPC分类号: H02J50/12 H02J50/40 H02J7/342

    摘要: A wireless power transmission device, and a transmission power control method therefor are provided. A wireless power transmission device for wirelessly transmitting power to a wireless power receiving device can comprise: a primary core comprising at least one primary coil and transmitting a power signal to the wireless power receiving device by being coupled, through magnetic induction or magnetic resonance, to a secondary core provided at the wireless power receiving device; an inverter connected to the primary core so as to apply an alternating voltage necessary for transmitting the power signal; and a controller connected to the inverter, and controlling a direct voltage to be applied to the wireless power transmission device and/or a gate voltage of the inverter on the basis of the information on the power received at the wireless power receiving device by the power signal.

    Recharging circuit for modular multilevel converters

    公开(公告)号:US11909234B2

    公开(公告)日:2024-02-20

    申请号:US16634298

    申请日:2018-03-01

    发明人: Stefan Goetz

    摘要: The present invention relates to a method for recharging an energy store (102) used to drive a power semiconductor switch (100), wherein the energy store (102) and the power semiconductor switch (100) are at the same potential, wherein a switching state of the power semiconductor switch (100) is effected by a controller (204, 712), wherein the controller (204) assigns a respective potential value to the energy store (102) at a respective switching state (202) and wherein, by driving at least one charging switch (112, 114, 122, 132, 142, 152), charging of the energy store (102) is activated as soon as the potential value of the energy store (102) corresponds to a ground potential of a supply voltage (106, 216).

    Disconnection detection device and disconnection detection method

    公开(公告)号:US11909233B2

    公开(公告)日:2024-02-20

    申请号:US17276269

    申请日:2019-11-06

    申请人: DENSO TEN Limited

    摘要: A disconnection detection device includes CR filters, discharge circuits, and a detection unit. The CR filters are provided for respective battery cells of a battery pack in which the battery cells are connected in series. Each of the discharge circuits is connected between the battery cell and the CR filter and discharging the battery cell when cell voltages of the battery cells are made balanced. The detection unit successively discharges two of the battery cells connected in series, successively detects voltages of detection lines detecting contact voltages of the two battery cells after a predetermined time has passed from finish of discharge of each of the battery cells, and detects disconnection of each of the detection lines on the basis of a difference between the two detected voltages.