公开(公告)号：US20230256867A1

公开(公告)日：2023-08-17

申请号：US18303584

申请日：2023-04-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Jinfeng Gao ,  Jin Huang

IPC: B60L58/27 ,  B60L1/02 ,  B60L58/25 ,  B60L50/51 ,  B60L53/22 ,  H01M10/63 ,  H01M10/625 ,  H01M10/615 ,  H02M7/537

CPC classification number: B60L58/27 ,  B60L1/02 ,  B60L58/25 ,  B60L50/51 ,  B60L53/22 ,  H01M10/63 ,  H01M10/625 ,  H01M10/615 ,  H02M7/537 ,  H01M2220/20 ,  B60L2210/40

Abstract: A traction battery heating circuit, system, and control method, and an electric device are provided. In some embodiments, the traction battery heating circuit includes: a power supply module, including at least one battery group; an inverter module, connected to the power supply module and including an M-phase leg circuit, where the leg circuit is connected in parallel to the battery group, and M is an even multiple of three; a driving module, including a motor having M windings, where the M windings are respectively connected to M phase legs of the leg circuit in one-to-one correspondence; and a control module, connected to the leg circuit, configured to control upper legs of at least three phase legs in the leg circuit and lower legs of the same number of phase legs in remaining legs to be turned on.

公开(公告)号：US11975632B2

公开(公告)日：2024-05-07

申请号：US17563207

申请日：2021-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Jinfeng Gao ,  Jin Huang

IPC: B60L58/27 ,  B60L1/02 ,  B60L50/51 ,  B60L53/22 ,  B60L58/12 ,  B60L58/25 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H02M7/537

CPC classification number: B60L58/27 ,  B60L1/02 ,  B60L50/51 ,  B60L53/22 ,  B60L58/12 ,  B60L58/25 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H02M7/537 ,  B60L2210/40 ,  B60L2240/545 ,  H01M2220/20

Abstract: The present application provide a control method of a power battery heating system. The method includes: controlling all upper bridge arms of a first bridge arm group and all lower bridge arms of a second bridge arm group to be turned on, and controlling all lower bridge arms of the first bridge arm group and all upper bridge arms of the second bridge arm group to be turned off, so as to form a first loop; controlling all the lower bridge arms of the first bridge arm group and all the upper bridge arms of the second bridge arm group to be turned on, and controlling all the upper bridge arms of the first bridge arm group and all the lower bridge arms of the second bridge arm group to be turned off, so as to form a second loop. The method is used to heat the power battery.