Power supply device that performs malfunctioned determination

    公开(公告)号:US11411414B2

    公开(公告)日:2022-08-09

    申请号:US16655042

    申请日:2019-10-16

    IPC分类号: H02J7/00

    摘要: There is provided a power supply device including a plurality of battery modules, the battery modules being connected in series with one another according to a gate driving signal from a controller, the power supply device transmitting the gate driving signal from upstream of the series connection toward downstream of the series connection after the gate driving signal is delayed at delay circuits included in the respective battery modules, and returning the gate driving signal to the controller from a most downstream battery module, wherein the power supply device performs malfunction determination of the delay circuits based on a time difference from a transmission time of a signal from the controller to a reception time of the signal.

    Power supply system
    8.
    发明授权

    公开(公告)号:US11302970B2

    公开(公告)日:2022-04-12

    申请号:US16657969

    申请日:2019-10-18

    摘要: A power supply system includes a controller, and a plurality of battery modules. The battery modules are connected in series, according to a gate drive signal from the controller, to provide series connection, and each of the battery modules has a disconnecting device configured to force the battery module to be disconnected from the series connection. The controller is configured to estimate the internal resistance of the battery module disconnected from the series connection by the disconnecting device, from a module voltage of the battery module before the battery module is disconnected from the series connection, a module voltage immediately after the battery module is disconnected, and a module current delivered from the battery module.

    Power supply system
    9.
    发明授权

    公开(公告)号:US11218013B2

    公开(公告)日:2022-01-04

    申请号:US17012581

    申请日:2020-09-04

    IPC分类号: H02J7/00 H02J1/02

    摘要: A power supply system includes a plurality of battery modules and a control unit, and supplies electric power from the battery modules in an uppermost stage and a lowermost stage to a load. The control unit is configured to perform ON/OFF control for setting the battery modules to an ON state in an active time, setting the battery modules to an OFF state in a non-active time, and alternately repeating the active time and the non-active time. The control unit is configured to delay an ON/OFF control timing for the battery module in a lower stage adjacent to the battery module in a higher stage by a control delay time in comparison with the battery module in the higher stage. The control unit is configured to randomly determine the control delay times for the battery modules in lower stages than the battery module in the uppermost stage.