While charging, there was a “click” sound, and the screen displayed “Charging stopped”…
It clearly showed “charging” before going to bed, but when I woke up, the battery level was still the same…
The power was cut off inexplicably halfway through charging, and I had to go downstairs in the dark to re-plug the charging gun in the middle of the night… Many new energy vehicle owners have experienced this bad moment – the “jump gun” failure is really annoying.
What is the reason behind this? Today, Youlaidian will take you to find out and reveal the truth about “jump gun”!
1. Common culprits of charging “jump gun”
Power “red line” protection (SOC protection):
SOC (State of Charge, that is, the remaining battery status) is a safety line preset for vehicles or charging piles. In order to protect the battery from damage caused by overcharging, most car owners or operators will set the SOC upper limit to around 98%. When the power reaches this preset threshold, the system will automatically terminate charging, which is a completely normal protection mechanism.
High temperature “fuse” mechanism:
Especially in hot summer or during long charging, if the battery temperature soars (usually the vehicle battery > 45℃) or the temperature at the handshake of the charging gun is too high (> 60℃), the charging system will immediately start thermal protection and force the charging process to be interrupted to eliminate the safety risks caused by overheating.
Failure of “dialogue” between car and pile:
The “battery butler” of your car, BMS (battery management system), needs to communicate smoothly with the charging pile. Once there is an abnormal communication signal or protocol mismatch between the two, the charging status may be misjudged, resulting in “jumping gun”. Note: If this problem occurs frequently at multiple charging stations and different charging piles, it is recommended to contact the 4S shop as soon as possible to check whether the vehicle BMS module needs to upgrade the software or conduct professional testing.
Unstable hardware “handshake”:
Physical connection is the key. If the charging gun interface is worn, invaded by foreign objects (dust, liquid), or the internal circuit is virtual or poorly connected, the current transmission will be blocked, directly causing “jumping gun”. Take the Youlaidian charging pile as an example. If you encounter a general jump gun, our operation and maintenance system can quickly solve it. If it is a faulty jump gun, you can call the after-sales service to confirm that it is a problem with the pile.
2. What should I do if I encounter a “jump gun”?
Try one pull and one change:
Don’t panic when you encounter a jump gun. The first step is to try to re-plug the charging gun. If the problem persists, decisively replace another nearby charging pile. If it still cannot be solved after multiple attempts, please contact the charging station customer service in time and let professionals check whether it is a fault of the charging pile itself.
Avoid environmental “minefields”:
Hot days: Give priority to charging in a cool underground parking lot, or use the lower temperature at night to charge.
Cold days: Low temperature will affect battery activity. It is recommended to use the vehicle’s built-in preheating function (if any) or drive a distance before charging to let the battery temperature return to a suitable range before starting charging.
3. Youlaidian’s intimate reminder.
Please keep the vehicle in a ignition off state when charging to avoid triggering certain protection mechanisms due to starting the vehicle.
From the perspective of battery health, lithium batteries are more suitable for “shallow charging and shallow discharging” (charging to 80%-90% daily) which can extend the battery life more than pursuing 100% full charge every time. If you really need to fully charge, it is recommended to use slow charging, which is more friendly to the battery.
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