The invention provides a wake-up circuit. The wake-up circuit comprises a self-locking key, a first capacitor and a control circuit, the self-locking key is arranged between the battery and the first capacitor; the first capacitor is connected with the control circuit; the first capacitor is charged when the self-locking key is pressed down; the control circuit is used for outputting a wake-up signal to a power supply chip of the battery management system when the first capacitor is in a charging state. When the self-locking key is pressed down, the first capacitor starts to be charged, and in the charging process, the control circuit is switched on and outputs the wake-up signal to the power supply chip of the battery management system, so that the power supply chip of the battery management system is awakened. And after the first capacitor is charged, the control circuit does not output the wake-up signal to the power supply chip of the battery management system any more. At the moment, the single-chip microcomputer outputs voltage to the power supply chip so that the power supply chip can work continuously. Therefore, based on the wake-up circuit, when the battery management system is dormant, the power supply chip is also dormant, so that the energy consumption in the battery management system is reduced.
本发明提供一种唤醒电路。该唤醒电路包括:自锁按键、第一电容和控制电路;自锁按键设置在电池和第一电容之间;第一电容与控制电路连接;第一电容在自锁按键被按下时充电;控制电路用于在第一电容处于充电状态下时,向电池管理系统的电源芯片输出唤醒信号。本发明当自锁按键被按下后,第一电容开始充电,在充电的过程中,控制电路导通,向电池管理系统的电源芯片输出唤醒信号,使电池管理系统的电源芯片被唤醒。当第一电容充电完成后,控制电路不再向电池管理系统的电源芯片输出唤醒信号。此时由单片机输出电压至电源芯片,以使电源芯片持续工作。可见,本发明基于唤醒电路,使电池管理系统休眠时电源芯片同样休眠,以减少电池管理系统中的耗能。
Wake-up circuit
一种唤醒电路
2025-05-13
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / 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 |