A MPU controls a changeover switch, which is an FET switch that connects a main battery and a sub-battery having a low rated voltage. The changeover switch is set to an ON state in a case where a potential difference, which is a difference between a voltage of the main battery and a voltage of the sub-battery, is equal to or greater than a positive first predetermined value. A PWM signal is output to a driver to cause the changeover switch to be in a half-ON state in a case where the potential difference is less than the first predetermined value and is greater than a second predetermined value equal to or less than 0. The changeover switch is set to an OFF state in a case where the potential difference is equal to or less than the second predetermined value.
SWITCH CONTROL DEVICE, SWITCH CONTROL METHOD, AND IN-VEHICLE POWER SUPPLY SYSTEM
2022-04-07
Patent
Electronic Resource
English
Switch control device, switch control method, and in-vehicle power supply system
European Patent Office | 2023
|SWITCH CONTROLLER, SWITCH CONTROL METHOD, AND ON-VEHICLE POWER SUPPLY SYSTEM
European Patent Office | 2022
|Vehicle-mounted induction type power supply switch, control system and vehicle
European Patent Office | 2023
|Electronic power supply protection control switch and electric vehicle
European Patent Office | 2024
|Automobile power supply main switch control method and control system
European Patent Office | 2023
|