公开(公告)号：US20240291389A1

公开(公告)日：2024-08-29

申请号：US18654559

申请日：2024-05-03

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jiansheng CHEN ,  Yang LIU ,  Yongfa LI

IPC: H02M3/335 ,  H02J7/00 ,  H02M3/00

CPC classification number: H02M3/33573 ,  H02M3/01 ,  H02J7/00 ,  H02J2207/20

Abstract: An LLC resonant conversion circuit includes a plurality of harmonic circuits. In each harmonic circuit, a plurality of transformers are electrically connected to each other and are electrically connected to one transformer in another harmonic circuit, so that the harmonic circuits are connected in a crossed manner. In this way, current or voltage of an electrical signal in one harmonic circuit can be distributed to another harmonic circuit. Without adding any component, this achieves the same current value for electrical signals in the harmonic circuits when the harmonic circuits are connected in parallel, and achieves the same voltage value for electrical signals in the harmonic circuits when the harmonic circuits are connected in series. This effectively reduces complexity of a control policy for the entire LLC resonant conversion circuit and also reduces costs of the LLC resonant conversion circuit.

公开(公告)号：US20250088023A1

公开(公告)日：2025-03-13

申请号：US18956324

申请日：2024-11-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Biao HU ,  Yang LIU ,  Yongfa LI

IPC: H02J7/00 ,  H02M1/00 ,  H02M3/335

Abstract: A charging apparatus and a charging control method, so that only a small quantity of relays are required when an output voltage range and an output power of a power converter are increased. This effectively reduces circuit costs of the charging apparatus, and effectively simplifies a control procedure for serial connection or parallel connection between a plurality of outputs of the power converter. The apparatus includes a first power converter, a first relay, and a second relay. The first power converter includes a first output end and a second output end. Conduction states of the first relay and the second relay are controlled, to control serial connection or parallel connection between the plurality of output ends of the first power converter.

公开(公告)号：US20220230828A1

公开(公告)日：2022-07-21

申请号：US17578833

申请日：2022-01-19

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yanxing YANG ,  Wei GUO ,  Xiaolong LU ,  Zheng LI ,  Zhigang SHENG ,  Yongfa LI ,  Hongbing WANG

IPC: H01H71/02 ,  H01H71/10 ,  H01H71/08

Abstract: The power distribution system includes a plug-in frame, a board located in the plug-in frame, and at least one circuit breaker. The board includes a plurality of slot positions, a position signal acquisition apparatus is disposed on the board, and the position signal acquisition apparatus is configured to acquire an address of any slot position on the board. A first end of each circuit breaker extends into the plug-in frame and is plugged to a slot position on the board, and a second end of the circuit breaker is located at an open end of the plug-in frame. The open end of the plug-in frame is provided with an address code, the address code corresponds to an address of a slot position on the board, and each circuit breaker corresponds to at least one address code.