Why do new energy vehicle charging piles jump?
2024-6-20
In recent years, with the popularity of new energy vehicles, we have gradually enjoyed many conveniences.As a new product at the forefront of the market, the usage problems that come with it often trouble us. Why did the charging pile jump? Why does it stop charging when it reaches 95%?
What’s going on with electric cars “jumping the gun”? Today the editor is here to answer your question. This problem may be caused by a variety of reasons, including but not limited to the following:
SOC is about 98% to protect charging safety
SOC, the full name is State of Charge, which is the battery's state of charge and remaining power, usually expressed as a percentage.In order to prevent the vehicle from overcharging and ensure the safety of the vehicle, we generally set the SOC of the vehicle below 100%. When the charging power reaches the preset SOC value, charging will be stopped. That is, when the pile end detects that the vehicle's remaining power has reached the set value, it will automatically stop charging.
In this way, when new energy vehicles are charging, "jumping gun" and "not fully charged" situations will occur. This protection setting is to avoid battery short circuit problems that may occur when the vehicle is overcharged and the vehicle's built-in BMS (charging management system) cannot automatically interrupt the charging operation, causing fires and unnecessary safety accidents.
Battery Management System (BMS) Error
If there is an error in the vehicle's BMS, the charging process may be terminated prematurely. This error may be related to vehicle software upgrades or due to problems with the communication modules between charging stations.
Charging pile power supply problem
If the power supply of the charging pile is insufficient or exceeds the power of the car charger, charging may also be interrupted. For example, if the power of the charging pile exceeds the endurance range of the household circuit, the protection mechanism may be triggered, causing charging to be interrupted.
Ambient temperature effect
When the ambient temperature is too high, the charging gun may activate the thermal protection device to prevent battery overheating and safety risks. If the battery temperature is too high during charging, the system will automatically stop charging and cause the battery to jump.
Charging interface worn
Long-term use or improper operation may cause serious wear and tear on the charging interface, which may also be one of the reasons for charging failure.
In recent years, with the popularity of new energy vehicles, we have gradually enjoyed many conveniences.As a new product at the forefront of the market, the usage problems that come with it often trouble us. Why did the charging pile jump? Why does it stop charging when it reaches 95%?
What’s going on with electric cars “jumping the gun”? Today the editor is here to answer your question. This problem may be caused by a variety of reasons, including but not limited to the following:
SOC is about 98% to protect charging safety
SOC, the full name is State of Charge, which is the battery's state of charge and remaining power, usually expressed as a percentage.In order to prevent the vehicle from overcharging and ensure the safety of the vehicle, we generally set the SOC of the vehicle below 100%. When the charging power reaches the preset SOC value, charging will be stopped. That is, when the pile end detects that the vehicle's remaining power has reached the set value, it will automatically stop charging.
In this way, when new energy vehicles are charging, "jumping gun" and "not fully charged" situations will occur. This protection setting is to avoid battery short circuit problems that may occur when the vehicle is overcharged and the vehicle's built-in BMS (charging management system) cannot automatically interrupt the charging operation, causing fires and unnecessary safety accidents.
Battery Management System (BMS) Error
If there is an error in the vehicle's BMS, the charging process may be terminated prematurely. This error may be related to vehicle software upgrades or due to problems with the communication modules between charging stations.
Charging pile power supply problem
If the power supply of the charging pile is insufficient or exceeds the power of the car charger, charging may also be interrupted. For example, if the power of the charging pile exceeds the endurance range of the household circuit, the protection mechanism may be triggered, causing charging to be interrupted.
Ambient temperature effect
When the ambient temperature is too high, the charging gun may activate the thermal protection device to prevent battery overheating and safety risks. If the battery temperature is too high during charging, the system will automatically stop charging and cause the battery to jump.
Charging interface worn
Long-term use or improper operation may cause serious wear and tear on the charging interface, which may also be one of the reasons for charging failure.
1. Re-select the slow charging station: If the remaining battery capacity of the vehicle has reached the preset SOC when "jumping the gun", it can be regarded as normal. When the battery "jumps" before the battery reaches the relevant value, you can re-insert the gun and start charging again.At the same time, in order to increase the safety of the charging process during high temperature seasons, some charging stations will further lower the SOC setting. Please consult the charging station service provider for the specific setting range. If you are pursuing 100% full power, under the premise that the SOC of the car is set to 100%, you can charge at the fast charging station to the SOC threshold and then choose the slow charging station.Trickle chargingReplenish the battery so that it can be "full".
2. Check the status of the charging pile and vehicle: When encountering the phenomenon of jumping, you should first check whether the charging pile is working properly and whether the charging interface of the vehicle is damaged or worn. If conditions permit, you can try to replace the charging pile or charging interface.
3. Avoid high-temperature environments: Avoid charging in high-temperature environments to avoid triggering the thermal protection device and causing charging interruption.
4. Update the software: If it is suspected that the vehicle jumps due to a BMS error, you can try to update the vehicle's software to fix possible problems.
5. Follow charging regulations: The correct use and maintenance of charging piles is crucial to ensuring the charging safety and charging efficiency of electric vehicles. It is recommended to follow the usage rules of shallow charging and shallow discharge, which is more consistent with the normal use status of lithium batteries.
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