一种漏电流测试电路及方法技术

一种漏电流测试电路及方法，其中，该漏电流测试电路可以包括第一开关电路(1)、第二开关电路(2)和第三开关电路(3)，第一开关电路(1)可以在外置接口(7)的输入电压高于预设阈值时，断开外置接口(7)与处理器部分(4)之间的电连接；第三开关电路(3)可以在外置接口(7)的输入电压高于预设阈值时，连通外置接口(7)和电池保护电路(6)，使得电池保护电路(6)产生过流保护，切断待测试终端中内置电池部分(9)与待供电部分(5)之间的供电回路；第二开关电路(2)可以在外置接口(7)的输入电压高于预设阈值时，导通外置接口(7)与待供电部分(5)之间的电连接，以使外部测试电源(8)通过所述外置接口(7)为所述待测试终端供电(5)并确定漏电流。可见，该漏电流测试电路无需取出待测试终端中的内置电池，即可便捷地获取待测试终端的漏电流。

A circuit and method for leakage current testing

A leakage current test circuit and method, wherein, the leakage current test circuit includes a first switching circuit (1), second (2) switching circuit and a third switching circuit (3), a first switch circuit (1) in the external interface (7) of the input voltage is higher than the preset threshold, disconnect the external interface (7) and a processor (4) part of the electrical connection between the switching circuit; third (3) in the external interface (7) of the input voltage is higher than the preset threshold, communicated with the external interface (7) and a battery protection circuit (6), so that the battery protection circuit (6) generates over-current protection, cut off test in the terminal part of the built-in battery (9) and (5) to be part of the power supply power supply circuit between the switch circuit; second (2) in the external interface (7) of the input voltage is higher than the preset threshold, conducting external interface (7) and the power supply part (5) to make an electrical connection between the external test power supply (8) The external interface (7) provides power supply (5) for the test terminal and determines the leakage current. It can be seen that the leakage current test circuit can easily get the leakage current of the terminal to be tested without taking out the built-in battery in the test terminal.

【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。

【技术保护点】
PCT国内申请，权利要求书已公开。

【技术特征摘要】
【国外来华专利技术】PCT国内申请，...

【专利技术属性】
技术研发人员：常智，邱钰鹏，田会斌，
申请(专利权)人：华为技术有限公司，
类型：发明
国别省市：广东,44