公开(公告)号：US20230223767A1

公开(公告)日：2023-07-13

申请号：US18180649

申请日：2023-03-08

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shuhao Deng ,  Denghai Pan ,  Hong Tuo

IPC: H02J7/00 ,  H01M10/42 ,  H01M10/48 ,  H02J7/34

CPC classification number: H02J7/0024 ,  H02J7/0047 ,  H01M10/425 ,  H01M10/482 ,  H02J7/345 ,  H02J7/0029 ,  H01M2010/4271

Abstract: The battery includes a cell pack. The detection circuit includes a first switch unit, a second switch unit, a discharge unit, a sampling unit, an energy storage unit, and a controller. A first terminal of the first switch unit is connected to a first terminal of the cell pack. A second terminal of the first switch unit is connected to a second terminal of the cell pack after being connected in series to the energy storage unit. The second switch unit is connected in parallel to the energy storage unit after being connected in series to the discharge unit. The discharge unit discharges the energy storage unit. The sampling unit is connected in parallel to the energy storage unit. The sampling unit sends an obtained sampling signal to the controller.

公开(公告)号：US12301105B2

公开(公告)日：2025-05-13

申请号：US18147177

申请日：2022-12-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shu Zhong ,  Zejie Lv ,  Liqiong Yi ,  Denghai Pan ,  Yuping Qiu ,  Zezhou Yang

IPC: H02M3/335 ,  H02M3/00

Abstract: A resonant converter and a voltage conversion method. The resonant converter includes a high-frequency inversion circuit, an inductor-inductor-capacitor (LLC) resonant tank network, and a hybrid rectification circuit. The LLC resonant tank network is separately coupled to the high-frequency inversion circuit and the hybrid rectification circuit. The high-frequency inversion circuit is configured to convert a first direct current voltage into a first alternating current voltage. The LLC resonant tank network is configured to adjust the first alternating current voltage to obtain a second alternating current voltage.

公开(公告)号：US20240253494A1

公开(公告)日：2024-08-01

申请号：US18630421

申请日：2024-04-09

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Denghai Pan ,  Zejie Lv ,  Liqiong Yi

IPC: B60L53/30 ,  B60L53/51 ,  B60L53/53 ,  H02J3/00 ,  H02J3/14 ,  H02J3/32 ,  H02J3/36 ,  H02J3/38 ,  H02J7/02 ,  H02J7/35

CPC classification number: B60L53/30 ,  B60L53/51 ,  B60L53/53 ,  H02J3/007 ,  H02J3/144 ,  H02J3/32 ,  H02J3/36 ,  H02J3/38 ,  H02J7/02 ,  H02J7/35 ,  B60L2210/10 ,  B60L2210/30 ,  H02J2207/20 ,  H02J2300/24

Abstract: A charging module includes an AC-DC circuit, a first DC-DC circuit, and a first direct current transmission circuit. A first end of the AC-DC circuit is connected to an alternating current grid, a second end is connected to a first end of the first DC-DC circuit through a high-voltage direct current bus, and a second end of the first DC-DC circuit is connected to a to-be-charged apparatus. A second end of the first direct current transmission circuit is configured to connect to an external direct current apparatus.