The invention relates to the field of vehicle power management, and discloses a dual-power backup circuit which comprises a first power supply, a second power supply, a first load and a second load, the output end of the first power supply is connected with the first load through a first one-way conduction element, and the output end of the second power supply is connected with the second load through a second one-way conduction element. The system further comprises a first switching circuit and a second switching circuit, when it is detected that the output voltage of the second power supply is lower than a preset threshold value, the first switching circuit is controlled to be switched on, so that the first power supply supplies power to the second load through the first switching circuit, and when it is detected that the output voltage of the first power supply is lower than the preset threshold value, the second switching circuit is controlled to be switched on. And the second power supply supplies power to the first load through the second switching circuit. The circuit is simple, the cost is low, and mutual backup of power supplies is realized.
本发明涉及车辆的电源管理领域,本发明的双电源的备份电路包括第一电源、第二电源、第一负载和第二负载,其中,第一电源的输出端通过第一单向导通元件与第一负载连接,所述第二电源的输出端通过第二单向导通元件与第二负载连接,还包括第一切换电路和第二切换电路,其中,当检测到第二电源的输出电压低于预设阈值时,控制第一切换电路导通,使第一电源通过第一切换电路给第二负载供电,当检测到第一电源的输出电压低于预设阈值时,控制第二切换电路导通,使第二电源通过第二切换电路给第一负载供电。本发明电路简单、成本低,实现电源相互备份。
Dual-power backup circuit, backup method and vehicle
一种双电源的备份电路、备份方法和车辆
2024-03-22
Patent
Electronic Resource
Chinese