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    • 3. 发明授权
    • Voltage monitoring circuit, test method therefor, and voltage monitoring system
    • 电压监控电路,测试方法和电压监控系统
    • US08860423B2
    • 2014-10-14
    • US13589158
    • 2012-08-19
    • Manabu Miyamoto
    • Manabu Miyamoto
    • G01N27/416G01R31/36
    • G01R31/362G01R31/025G01R31/3658
    • A voltage monitoring circuit includes a plurality of voltage input terminals which input a voltage across each of a plurality of series-coupled battery cells, a selection circuit which, by selecting two of the voltage input terminals, selects a voltage across one of the battery cells; an A/D converter which converts the voltage across the battery cell into a digital value, a control unit which sends the digital value to an external controller, a ground wiring which is coupled to a ground terminal for inputting a ground level voltage for the voltage monitoring circuit, the ground terminal being among the voltage input terminals, and through which the voltage monitoring circuit is supplied with the ground level voltage, a terminal which is supplied with a lowest fixed potential, and a switch circuit which is coupled between the first terminal and the ground wiring.
    • 电压监视电路包括输入多个串联电池单元中的每一个的多个电压输入端子,选择电路通过选择两个电压输入端子来选择电池单元中的一个电压 ; 将电池单元两端的电压转换为数字值的A / D转换器,将数字值发送到外部控制器的控制单元,耦合到接地端子的接地线,用于输入电压的地电平电压 所述接地端子位于所述电压输入端子之间,所述电压监视电路通过所述接地端子被提供有地电平电压,提供有最低固定电位的端子以及耦合在所述第一端子之间的开关电路 和接地线。