发明授权
- 专利标题: Energy storage system with multiple battery modules for a vehicle propulsion system
-
申请号: US17085388申请日: 2020-10-30
-
公开(公告)号: US11365711B2公开(公告)日: 2022-06-21
- 发明人: Venkatesh Gopalakrishnan , Chandra S. Namuduri , Suresh Gopalakrishnan , Dongxu Li , Chunhao J. Lee , Neeraj S. Shidore , Norman K. Bucknor
- 申请人: GM Global Technology Operations LLC
- 申请人地址: US MI Detroit
- 专利权人: GM Global Technology Operations LLC
- 当前专利权人: GM Global Technology Operations LLC
- 当前专利权人地址: US MI Detroit
- 代理机构: Vivacqua Crane, PLLC
- 主分类号: F02N11/08
- IPC分类号: F02N11/08 ; H02J7/00
摘要:
An energy storage system (ESS) for a vehicle propulsion system includes a first battery electrically coupled to a first voltage bus, a second battery electrically coupled to a second voltage bus, and a bidirectional DC/DC power converter electrically coupled to the voltage buses. A starter for cranking an engine is electrically coupled to the first voltage bus. A controller executes computer code stored in memory. The computer code is configured to operate the converter in a boost mode to transfer power from the second voltage bus to the first voltage bus, in response to the controller determining that: a power capability of the first battery is below a power demand on the first voltage bus; a state of charge of the first battery is below a state of charge threshold; or a temperature of the first battery is below a temperature threshold.