Exploring the “jumping gun” phenomenon of charging piles

charging gun

1. Why does the charging pile sometimes jump out of the gun when charging?

There are three main reasons why the charging gun “jumps”:

Man-made causes:

It was charging well, but suddenly someone pressed the emergency stop button, or someone moved the gun, so the charging stopped before it was fully charged; some car owners set the SOC (battery level) because they were not familiar with the basic operations of the car and charging pile. The upper limit is 80% of the full battery life, and there may be cases where it stops when it is not fully charged. For example, on a Tesla electric car, you can set the charging value to a percentage on its screen. In this case, the vehicle will automatically stop when it reaches a certain SOC value.

soc
The reason for the car:

During the charging process, when the vehicle detects overvoltage and overcurrent in the battery, it spontaneously performs protective actions to stop charging;

poor insulation of some original parts of the vehicle will also stop charging before it is fully charged;

at the same time, to ensure safety, some brands of vehicles also use software that “locks out” the situation.

Some batteries are aging, and older cars may occasionally experience jumps. Or the battery temperature is too high, triggering the vehicle’s thermal protection.

The outdoor high temperature can also easily trigger the battery’s thermal protection device. When the temperature of the charging gun reaches a certain level, the charging pile will trigger the phenomenon of jumping the gun.

It is recommended that if you encounter this situation, you first place the vehicle in a cool environment and wait until the temperature cools down before charging. It will also jump when the BMS (vehicle management system) fails.

You can try to change piles for testing. If multiple piles frequently jump, it may be due to a problem with the communication module between the vehicle’s BMS and the charging pile,

or the charging pile detects an incorrect For safety reasons, the vehicle will actively issue a stop request. It is recommended that car owners go to the 4S store for safety monitoring as soon as possible to eliminate safety hazards.

Terminal reason:

The terminal’s two-layer protection technology detects potential safety hazards such as overvoltage, overcurrent, and overtemperature in the vehicle battery,

and autonomously stops charging; problems such as terminal temperature sensor, module failure, old software, and protocol mismatch can also lead to “jumping the gun”,

Lanning Technology has reduced the failure rate to a minimum through its technical advantages. What to do if you encounter a jumping gun? In the case of low SOC,

if a power outage occurs during vehicle charging, first check whether the vehicle and charging terminal have any appearance problems, whether emergency stop has been pressed, etc.,

whether there are foreign objects in the charging gun, whether the charging gun can be inserted in place, and make sure there are no problems.

Finally, you can consider restarting the vehicle or changing the charging pile to try charging again. If the jump does not occur, it may be a problem with the charging pile.

If you’d like to confirm, you can contact the pile maintenance personnel.

2. Are there any safety risks associated with this phenomenon?

While charge-pump incidents can be unsettling for EV owners, they generally don’t represent a significant safety risk. Modern EVSE systems are designed with multiple safety features to prevent electrical hazards and ensure user protection. Additionally, standard protocols exist to regulate and certify these devices as meeting safety standards.

3. Will this phenomenon damage the battery of electric vehicles?

In most cases, a charger popping out of a gun won’t cause significant damage to an electric car’s battery. If it happens multiple times, please get in touch with a professional to resolve the issue.

Through the above explanation, I believe everyone has an understanding of this phenomenon.

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