公开(公告)号：US5714869A

公开(公告)日：1998-02-03

申请号：US726937

申请日：1996-10-07

申请人： Masanari Tamechika ,  Kimitoshi Fukae ,  Nobuyoshi Takehara

发明人： Masanari Tamechika ,  Kimitoshi Fukae ,  Nobuyoshi Takehara

IPC分类号： H02H9/04 ,  H02J1/00 ,  H02J7/00 ,  H02J7/35 ,  H02J7/04

CPC分类号： H02J7/35 ,  H02J7/0031 ,  H02J7/0034

摘要： A power source apparatus includes a power generation device, a battery and an overcharge protection circuit. The overcharge protection circuit includes a shunt circuit, including a switching device for short-circuiting the power generation device when an input signal is at an `L` level. A reverse current protection circuit prevents an electric current from reversely flowing to the power generation device and/or the shunt circuit. A voltage detection section detects the voltage of the load or between the poles of the battery. An overcharge judgement section outputs an `L` level to the switching device when the voltage value detected by the voltage detection section surpasses a preset voltage value. When the voltage across the battery surpasses a predetermined value, the power source apparatus is short-circuited by the overcharge protection circuit, and therefore it is possible to prevent overvoltage from being applied to the load. In addition, even when the battery is disconnected, oscillation of the overcharge protection circuit can be prevented.

摘要翻译： 电源装置包括发电装置，电池和过充保护电路。 过充保护电路包括分流电路，其包括用于在输入信号为“L”电平时短路发电装置的开关装置。 反向电流保护电路防止电流反向流向发电装置和/或分流电路。 电压检测部检测负载的电压或电池的极点。 当由电压检测部检测的电压值超过预设电压值时，过充电判断部分向开关装置输出“L”电平。 当电池两端的电压超过预定值时，电源装置被过充保护电路短路，因此可以防止过载被施加到负载上。 此外，即使电池断开，也可以防止过充电保护电路的振荡。