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    • 4. 发明申请
    • Control circuit for charging/discharging of secondary cell and a sensor node
    • 用于二次电池充电/放电的控制电路和传感器节点
    • US20060076934A1
    • 2006-04-13
    • US11072490
    • 2005-03-07
    • Yuji OgataShunzo YamashitaTakanori ShimuraKiyoshi Aiki
    • Yuji OgataShunzo YamashitaTakanori ShimuraKiyoshi Aiki
    • H02J7/00
    • H02J7/0031
    • In a sensor node SN driven by a secondary battery, a charge/discharge control circuit can be realized and an unnecessary circuit in the sensor node can be eliminated for its miniaturization. The charge/discharge control circuit and the sensor node have a comparator for monitoring a battery voltage, a control circuit for converting an output of the comparator into an interrupt signal, a micro controller for performing charge/discharge control only when detecting the interrupt signal, and a switch turned ON or OFF under control of the micro controller. When the battery voltage is not lower than a first predetermined voltage, the switch is turned OFF to thereby stop charging operation. When the battery voltage is not higher than a second predetermined voltage, the switch is turned OFF to stop discharging operation. A circuit necessary in a charge mode is provided in a charger side.
    • 在由二次电池驱动的传感器节点SN中,可以实现充放电控制电路,并且可以消除传感器节点中的不必要的电路以使其小型化。 充放电控制电路和传感器节点具有用于监视电池电压的比较器,用于将比较器的输出转换为中断信号的控制电路,仅在检测到中断信号时执行充放电控制的微控制器, 并且在微控制器的控制下开关被接通或断开。 当电池电压不低于第一预定电压时,开关断开,从而停止充电操作。 当电池电压不高于第二预定电压时,开关断开以停止放电操作。 在充电器侧提供充电模式所需的电路。