公开(公告)号：US20250070300A1

公开(公告)日：2025-02-27

申请号：US18811991

申请日：2024-08-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Qi WU ,  Yihong WU ,  Yuandong MENG ,  Haibin GUO ,  Ye He

IPC: H01M10/615 ,  H01M10/42 ,  H01M10/635 ,  H01M10/6571

Abstract: An energy storage apparatus and an energy storage system. The energy storage apparatus includes a cell and a heating circuit. The heating circuit includes a heating resistor and a switch. The heating resistor and the switch are configured to be connected in series to a power supply loop. The switch in the heating circuit is controlled to be on and off, so that the heating resistor is intermittently connected to and disconnected from the power supply loop. The switch may control, based on a power supply voltage provided by the power supply loop, turn-on time and turn-off time of a line between the power supply loop and the heating resistor in each switching cycle, to dynamically adjust an average heating power of the heating circuit.

公开(公告)号：US20250038284A1

公开(公告)日：2025-01-30

申请号：US18783760

申请日：2024-07-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Gongde CHEN ,  Baoguo Chen ,  Ye He

IPC: H01M10/48 ,  H01M10/0525 ,  H01M10/42

Abstract: An energy storage system includes an electrochemical cell pack, a startup circuit, and an auxiliary source circuit. The startup circuit includes a first control circuit and a second control circuit, the second control circuit includes a first voltage divider circuit and a second voltage divider circuit that are connected in series, the first voltage divider circuit includes a switching device and a voltage divider that are connected in series, and a connection point between the first voltage divider circuit and the second voltage divider circuit is connected to a first control end of the first control circuit. When the switching device is turned on, a voltage of the electrochemical cell pack needs to meet a specified condition, and the first control circuit turns on a line between the electrochemical cell pack and the auxiliary source circuit, to enable the battery pack to supply power to the auxiliary source circuit.