The principle of preventing oil pumping in electronic cars

An electric vehicle anti-spill system (also known as an anti-spill leakage system) is a safety device used to prevent electric vehicles from spilling liquid in the electric vehicle power battery pack during charging.

The principle of this system is as follows:

1. Pressure monitoring: The system will monitor the pressure changes within the battery pack. When the pressure exceeds a certain threshold, the system triggers anti-pumping operations.

2. Automatically shut down charging: When the system detects excessive pressure, it will automatically send a signal to the charging device, asking it to stop charging the battery pack.

3. Interrupt the charging circuit: The system will also prevent the battery pack from continuing to receive power by disconnecting the charging circuit. This prevents any further increase in pressure within the battery pack.

4. Liquid discharge: After preventing charging, the system will open a discharge channel so that the liquid (such as electrolyte) in the battery pack can be safely discharged. This prevents the battery pack from over-pressuring, thereby avoiding the risk of spillage or explosion.

In general, the anti-oil pumping system of electric vehicles monitors pressure and implements control measures to ensure that the battery pack does not overpressure or overflow liquid. This can improve the safety of electric vehicle charging.