CYLINDRICAL SECONDARY BATTERY
    17.
    发明申请

    公开(公告)号:US20230079718A1

    公开(公告)日:2023-03-16

    申请号:US17939810

    申请日:2022-09-07

    发明人: Sung Gwi KO

    摘要: A cylindrical secondary battery includes: an electrode assembly including a first electrode plate and a second electrode plate; a can having a bottom part and a cylindrical side part, configured to accommodate the electrode assembly, and electrically connected to the first electrode plate; and a cap assembly. The cap assembly includes: a cap plate coupled to one end of the cylindrical side part and electrically connected to the cylindrical side part; and a rivet terminal insulated from the cap plate and electrically connected to the second electrode plate.

    METHOD OF DETECTING AN OPERATING CONDITION OF A BATTERY SYSTEM, WHICH MAY LEAD TO A THERMAL RUNAWAY

    公开(公告)号:US20230077121A1

    公开(公告)日:2023-03-09

    申请号:US17901758

    申请日:2022-09-01

    发明人: Andrej GOLUBKOV

    摘要: A battery system includes a battery pack including battery cells and a cooling system including a coolant transfer member for circulating a liquid coolant in a cooling circuit, a first heat exchanger integrated into the cooling circuit and thermally contacting the battery cells, and a pressure sensor for detecting a change in pressure inside the cooling circuit. A battery management system is connected to the pressure sensor and the coolant transfer member and is for performing a detection mode including: detecting an initial pressure with the pressure sensor and switching off the coolant transfer member for a time period; after switching off the coolant transfer member, capturing the pressure with the pressure sensor; and determining a pressure difference between the initial pressure value and the captured pressure, when the pressure difference exceeds a threshold, determining an abnormal condition that could cause a thermal runaway of the battery pack.