公开(公告)号：US20240258591A1

公开(公告)日：2024-08-01

申请号：US18631638

申请日：2024-04-10

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hong TUO ,  Yi CAI ,  Wenguang LI ,  Baoguo CHEN

IPC: H01M10/42 ,  H02J7/00

CPC classification number: H01M10/4264 ,  H02J7/0068 ,  H01M2010/4271 ,  H01M2220/10 ,  H02J2207/20

Abstract: A battery management system includes a sampling control unit, a DC/DC conversion unit, and an energy storage unit. When the battery pack needs to be heated, based on battery parameters of the battery pack and a voltage and a current limit value of the DC/DC conversion unit, the sampling control unit may control, in each of at least one consecutive first cycle, the battery pack to discharge to the energy storage unit by using the DC/DC conversion unit; control, in each of at least one consecutive second cycle, the energy storage unit to charge the battery pack by using the DC/DC conversion unit; and control, in the at least one consecutive first cycle and the at least one consecutive second cycle, an average charge/discharge current value of the battery pack to be less than or equal to a charge/discharge current limit value.