During daily charging processes, occurrences such as "gun jumping" and "gun locking" are common, especially when time is tight. How can these be handled more efficiently?
Why does "gun jumping" occur?
"Gun jumping" is a familiar issue, whether at gas stations or charging stations. Taking charging as an example, there are many reasons for "gun jumping":
From the charging pile's perspective, aside from SOC settings, wear and tear on the charging gun head, aging and faults in the gun cable, excessive temperature of the gun cable, poor grounding, lack of signal, and foreign objects or moisture at the charging interface can all cause "gun jumping."
From the vehicle's side, "gun jumping" is often due to poor contact in the charging interface circuit, faults in the charging interface, or failures in the BMS (Battery Management System) module.
Therefore, it's clear that "gun jumping" isn't solely a problem with the charging pile and requires specific analysis. For us, choosing reputable charging brands and services, selecting appropriate charging environments, and following correct charging procedures can help minimize "gun jumping" caused by human factors.
What are the correct charging steps?
At this point, many might say, "Isn't charging just plugging in the gun and scanning a code? What could go wrong?" Actually, it's not that simple. For example, the seemingly simple act of plugging in the gun, if done improperly, can cause the charging pile to fail to start. So, what are the correct steps for plugging in the gun?
First, before starting to charge, ensure the vehicle is turned off. After turning off, hold the charging gun handle and insert the gun head into the vehicle's connection point. A "click" sound indicates the gun is properly inserted. If there's no locking sound, remove the gun and try inserting it again. Once properly inserted, swipe your card to start charging.
Can't remove the gun? Try this~
Compared to "gun jumping," "gun locking" is equally frustrating. When encountering this, first confirm if the charging order is complete, if the charging pile has stopped charging, and if the operation light is off. After confirming, different measures can be taken based on the type of charging pile.
For AC charging piles, which do not have a locking mechanism and are "vehicle-locked," try "unlocking the car door—locking it—and then unlocking it again" before attempting to remove the gun. If it still won't unlock, contact a 4S store for assistance with the vehicle's emergency unlocking method.
For DC charging piles, which have their own locking mechanism and are "gun-locked," first straighten the charging gun cable, support the cable with your left hand, press down firmly on the gun's micro switch with your right hand (or slide it forward if it's a sliding switch), and then pull out the gun forcefully.
If the gun still won't come out, depending on the gun head type, use items like earphone wires, data cables, mask straps, screwdrivers, or keys to hook/pry the latch, press down on the gun's micro switch (or slide it forward), and then pull out the gun.
Note: Never force the gun out. Forcibly removing the gun can cause "arcing," potentially damaging the vehicle's battery, the charging pile, or even causing a fire.
That concludes today's science lesson.
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Post time: Mar-06-2025
