本发明提供一种基于BMS电池管理系统的下电延时电路及应用系统,其中,下电延时电路,MCU output端通过电阻R5连接三极管Q2的基极;三极管Q2的发射极连接GND端;三极管Q2的基极和发射极连接有电阻R4;BMS电源输入端通过电阻R1接入三极管Q2的集电极和PMOS管Q1的栅极;BMS电源输入端串联PMOS管Q1的源极;PMOS管Q1的漏极通过二极管D2连接唤醒信号端;PMOS管Q1的漏极通过运放电路连接MCU input端。应用该下电延时电路,当唤醒信号消失,BMS电池管理系统按照延时时间T实现延时休眠,方便了电池历史信息和故障信息等数据的保存和上传。
The invention provides a power-down time delay circuit and application system based on a BMS (battery management system), and the power-down time delay circuit is characterized in that the output end of an MCU (microprogrammed control unit) is connected with the base electrode of a triode Q2 through a resistor R5; the emitter of the triode Q2 is connected with the GND end; the base electrode and the emitting electrode of the triode Q2 are connected with a resistor R4; the BMS power supply input end is connected to the collector electrode of the triode Q2 and the grid electrode of the PMOS tube Q1 through the resistor R1; the power input end of the BMS is connected with the source electrode of the PMOS transistor Q1 in series. The drain electrode of the PMOS transistor Q1 is connected with a wake-up signal end through a diode D2; and the drain electrode of the PMOS transistor Q1 is connected with the input end of the MCU through the operational amplifier circuit. By applying the power-off delay circuit, when the wake-up signal disappears, the BMS battery management system realizes delayed dormancy according to the delay time T, and storage and uploading of data such as battery historical information and fault information are facilitated.
一种基于BMS电池管理系统的下电延时电路及应用系统
2024-05-28
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |