Control of computer AC adapter output voltage via battery pack feedback
    2.
    发明授权
    Control of computer AC adapter output voltage via battery pack feedback 失效
    通过电池组反馈控制计算机AC适配器输出电压

    公开(公告)号:US5684382A

    公开(公告)日:1997-11-04

    申请号:US684686

    申请日:1996-07-19

    IPC分类号: H01M10/44 H02J7/00 H01M10/46

    CPC分类号: H02J7/0004 H01M10/44

    摘要: A computer system including circuitry for accurately and economically controlling the charge voltage and charge current at the terminals of its rechargeable battery. During a battery recharge, sensor circuitry coupled to the battery provides accurate data to a battery microcontroller regarding the charge voltage and charge current present at the battery terminals. A battery microcontroller relays this information to a multipurpose microcontroller. The battery microcontroller also provides the desired charging voltage and current as determined by the battery pack's charging algorithm. The multipurpose microcontroller uses the battery status information to program an addressable potentiometer. In turn, the potentiometer generates an adjustment signal that controls the output voltage of the computer's AC adapter. Preferably, the AC adapter is capable of being operated in a constant-power mode. Adjustment of the potentiometer allows the output of the AC adapter to be dithered up or down as needed to provide the desired charging voltage and charging current to the battery.

    摘要翻译: 一种计算机系统,包括用于精确和经济地控制其可再充电电池的端子处的充电电压和充电电流的电路。 在电池充电期间,耦合到电池的传感器电路向电池微控制器提供关于存在于电池端子处的充电电压和充电电流的精确数据。 电池单片机将该信息中继到多功能微控制器。 电池微控制器还提供由电池组的充电算法确定的期望的充电电压和电流。 多功能微控制器使用电池状态信息来编程可寻址电位计。 电位器又产生一个调节信号,控制计算机的AC适配器的输出电压。 优选地,AC适配器能够以恒定功率模式操作。 调整电位器可以根据需要将交流电适配器的输出向上或向下抖动,从而为电池提供所需的充电电压和充电电流。