USING BATTERY CHARGER AS A HEATER
    8.
    发明公开

    公开(公告)号:US20240291304A1

    公开(公告)日:2024-08-29

    申请号:US18175884

    申请日:2023-02-28

    申请人: Apple Inc.

    摘要: A battery charging system can include a first charger module having a first AC side couplable to an AC source and a first DC side couplable to a battery and first control circuitry that operates the first charger to charge or discharge the battery; and a second charger module having a second AC side couplable to the AC source and a second DC side couplable to the battery and second control circuitry that operates the second charger to generate heat, wherein: if the first charger module is charging the battery from the AC source, the second control circuitry operates the second charger to generate heat without delivering charging current to the battery; and if the second charger is discharging the battery to the AC source, the second control circuitry operates the second charger to generate heat without delivering current to the AC source.