公开(公告)号：US11329491B2

公开(公告)日：2022-05-10

申请号：US16890000

申请日：2020-06-02

Applicant: Richtek Technology Corporation

Inventor： Wei-Ting Tai ,  Wei-Hsu Chang

IPC: H02J7/00

Abstract: A distributed battery balance management method includes: performing a battery system balancing procedure by a battery system balance management unit and performing battery module balancing procedure by module balance management circuit (MBMC) of corresponding battery module (BM). The battery system balancing procedure includes: obtaining lowest module voltages of corresponding BMs; obtaining a lowest system voltage and an average system voltage of the battery system; determining whether the lowest module voltage of the corresponding BM is greater than the average system voltage; when yes, setting a balance time duty ratio of the corresponding MBMC as a first duty ratio; when no, setting the balance time duty ratio of the corresponding MBMC as a second duty ratio; and setting module balance enable signal of corresponding MBMC to be enable, thus allowing the corresponding BM to perform voltage balance control on the batteries in the corresponding BM.

公开(公告)号：US20210075229A1

公开(公告)日：2021-03-11

申请号：US16890000

申请日：2020-06-02

Applicant: Richtek Technology Corporation

Inventor： Wei-Ting Tai ,  Wei-Hsu Chang

IPC: H02J7/00

Abstract: A distributed battery balance management method includes: performing a battery system balancing procedure by a battery system balance management unit and performing battery module balancing procedure by module balance management circuit (MBMC) of corresponding battery module (BM). The battery system balancing procedure includes: obtaining lowest module voltages of corresponding BMs; obtaining a lowest system voltage and an average system voltage of the battery system; determining whether the lowest module voltage of the corresponding BM is greater than the average system voltage; when yes, setting a balance time duty ratio of the corresponding MBMC as a first duty ratio; when no, setting the balance time duty ratio of the corresponding MBMC as a second duty ratio; and setting module balance enable signal of corresponding MBMC to be enable, thus allowing the corresponding BM to perform voltage balance control on the batteries in the corresponding BM.