The invention discloses a charging detection and wake-up circuit and a power management system. A first voltage division circuit generates a first control signal according to a first voltage; a first switch assembly outputs a first voltage according to the first control signal; a second voltage division circuit generates a second voltage according to the first voltage; a detection circuit generates a detection signal according to the connection confirmation signal access state of the charging gun; a second switch assembly outputs a first voltage according to the detection signal; a wake-up enable circuit generates a wake-up enable signal according to the first voltage output by the second switch assembly to wake up and activate the battery management system; a control switch assembly controls the first switch assembly to stop outputting the first voltage according to the control enable signal generated by the battery management system controller after the battery management system is completely activated, and one circuit is shared to realize charging connection confirmation signal detection and awakening activation of the battery management system for charging, so that the detection and control precision is high; a detection loop is saved, the circuit structure is simple, and the cost is reduced.
一种充电检测与唤醒电路及电源管理系统,通过第一分压电路根据第一电压生成第一控制信号;第一开关组件根据第一控制信号输出第一电压;第二分压电路根据第一电压生成第二电压;检测电路根据充电枪的连接确认信号接入状态生成检测信号;第二开关组件根据检测信号输出第一电压;唤醒使能电路根据第二开关组件输出的第一电压生成唤醒使能信号以唤醒激活电池管理系统;控制开关组件根据电池管理系统完全激活后电池管理系统控制器生成的控制使能信号控制第一开关组件截止输出第一电压,共用一个电路实现充电连接确认信号检测和唤醒激活电池管理系统进行充电,检测和控制精度高,节约了一路检测回路,电路结构简单,降低了成本。
Charging detection and wake-up circuit and battery management system
一种充电检测与唤醒电路及电池管理系统
2021-06-04
Patent
Electronic Resource
Chinese
Lithium battery BMS charging wake-up and charging signal detection circuit
European Patent Office | 2024
|Battery management system wake-up circuit, battery management system, battery system and equipment
European Patent Office | 2024
|Battery management system and wake-up diagnosis circuit thereof
European Patent Office | 2023
|AC charging CC signal detection circuit with wake-up function
European Patent Office | 2021
|