The invention discloses an electromagnetic valve driving circuit for a vehicle. A vehicle-mounted battery VBAT is connected with an electromagnetic valve follow current module after sequentially passing through an anti-reverse module and a high-side electromagnetic valve power supply module, an electromagnetic valve coil is connected to the electromagnetic valve follow current module, a low-side grounding switch module is led out between the anti-reverse module and the high-side electromagnetic valve power supply module, and the high-side electromagnetic valve power supply module is connected to a driving port of an MCU. The electromagnetic valve follow current module is connected to a PWM driving signal port of the MCU through the low-side grounding switch module, the electromagnetic valve follow current module is connected to an analog-to-digital conversion port of the MCU through the electromagnetic valve current acquisition module, and the electromagnetic valve follow current module is connected to a test port of the MCU through the electromagnetic valve fault diagnosis module. The circuit can carry out current type control on the solenoid valve coil, integrates diagnosis and protection, does not need a special integrated chip to drive the solenoid valve coil, reduces the dependence on the special chip, and improves the use safety.
本发明公开了一种车用电磁阀驱动电路。车载电池VBAT依次经防反模块、高边电磁阀供电模块后和电磁阀续流模块连接,电磁阀线圈连接到磁阀续流模块,防反模块和高边电磁阀供电模块之间引出和低边接地开关模块连接,高边电磁阀供电模块连接到MCU的驱动端口,电磁阀续流模块经低边接地开关模块连接到MCU的PWM驱动信号端口,电磁阀续流模块经电磁阀电流采集模块连接到MCU的模数转换端口,电磁阀续流模块经电磁阀故障诊断模块连接到MCU的测试端口。本发明电路能对电磁阀线圈进行电流型控制,并且集成诊断及保护,不在需要专用的集成芯片来进行电磁阀线圈的驱动,降低对专用芯片的依赖度,提高了使用的安全性。
Electromagnetic valve driving circuit for vehicle
车用电磁阀驱动电路
2023-10-31
Patent
Elektronische Ressource
Chinesisch
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