公开(公告)号：US20240270121A1

公开(公告)日：2024-08-15

申请号：US18359411

申请日：2023-07-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jingyuan LIU ,  Qili SU ,  Dave G. RICH ,  Si CHEN ,  James MORRISON ,  Dewen KONG ,  Haijing LIU

IPC: B60L58/22 ,  B60L58/12 ,  B60L58/19

CPC classification number: B60L58/22 ,  B60L58/12 ,  B60L58/19 ,  B60L2240/547

Abstract: A state of charge (SOC) balancing system includes: first and second batteries; first and second capacitors; an SOC module configured to determine first and second SOCs of the first and second batteries, respectively; and a switching module configured to selectively, when the first SOC is greater than the second SOC: (i) electrically connect the first and second capacitors in parallel; (ii) electrically connect the first battery to the first and second capacitors while the first and second capacitors are electrically connected in parallel; (iii) electrically disconnect the first battery from the first and second capacitors; (iv) electrically connect the first and second capacitors in series; (v) electrically connect the second battery to the first and second capacitors while the first and second capacitors are electrically connected in series; and (vi) electrically disconnect the second battery from the first and second capacitors.