公开(公告)号：US20140167702A1

公开(公告)日：2014-06-19

申请号：US14106122

申请日：2013-12-13

Applicant: Seiko Instruments Inc.

Inventor： Atsushi SAKURAI ,  Kazuaki SANO ,  Toshiyuki KOIKE ,  Shinya FUKUCHI

IPC: H02J7/00

CPC classification number: H02J7/0029 ,  H02J2007/0039

Abstract: There are provided an overcurrent protection circuit which has a smaller circuit area, a charging and discharging control circuit, and a compact battery device. The charging and discharging control circuit includes an overcurrent detection circuit which monitors the voltage of an overcurrent detection resistor connected to an overcurrent detection terminal and which detects the flow of an overcurrent into a secondary battery, an overcurrent release circuit which monitors the voltage at a terminal to which a load is connected through a voltage step-down circuit connected to an overcurrent release terminal and which detects the removal of a load, and a clamping circuit connected to the overcurrent release terminal are provided. The voltage at the overcurrent release terminal is clamped by the voltage step-down circuit and the clamping circuit.

Abstract translation: 提供了具有较小电路面积的过电流保护电路，充放电控制电路和小型电池装置。 充放电控制电路包括过电流检测电路，其监测与过电流检测端子连接的过电流检测电阻器的电压，并检测过电流流入二次电池;过电流释放电路，其监视端子处的电压 通过连接到过电流释放端子的电压降压电路连接负载并检测负载的移除，并且提供连接到过电流释放端子的钳位电路。 过电流释放端子上的电压由降压电路和钳位电路钳位。

公开(公告)号：US20160013668A1

公开(公告)日：2016-01-14

申请号：US14793059

申请日：2015-07-07

Applicant: Seiko Instruments Inc.

Inventor： Shinya FUKUCHI

IPC: H02J7/00

CPC classification number: H02J7/0021 ,  H02J7/0026 ,  H02J7/0072

Abstract: Provided are a charge and discharge control circuit having a small circuit area and a compact battery device. A constant current circuit and an external resistor are connected to a voltage monitoring terminal so that a terminal voltage is pulled up or pulled down based on an external input. Moreover, output logic of a comparator and overcharge detection and overdischarge detection are switched based on the external input.

Abstract translation: 提供具有小电路面积的电荷放电控制电路和小型电池装置。 恒定电流电路和外部电阻连接到电压监视端子，使得端子电压基于外部输入被上拉或下拉。 此外，基于外部输入来切换比较器的输出逻辑和过充电检测和过放电检测。