For electric vehicles, fast charging is now common, and some models can fully charge the vehicle battery in about an hour. However, sometimes, car owners will take advantage of the charging gap to go shopping or other activities. If the vehicle’s BMS system does not automatically cut off the charge after the vehicle is fully charged, it will easily cause the vehicle’s battery to be overcharged, damage the battery or charging settings, or even cause a short circuit and fire in the vehicle’s battery.
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In order to add another layer of safety insurance to the vehicle “overcharge”, the State Grid has also begun to take the lead.
Today, State Grid (Beijing) New Energy Vehicle Service Co., Ltd. issued an announcement stating that, in view of some recent new energy vehicles, spontaneous combustion of power batteries spontaneously occurred during non-charging.
In order to better provide users with safe and reliable charging services, reduce the risk of spontaneous combustion of power batteries that may occur after charging facilities are completed.
From December 15, 2020, our company will gradually upgrade the core control program of charging facilities for the charging facilities of the State Grid Beijing Electric Power Company.
For DC charging facilities, it will automatically stop and settle after the trickle charge reaches SOC95%. It is mainly used to solve the problem that the vehicle charging management system (BMS) does not automatically cut off the charge when the new energy vehicle is overcharged, which leads to the formation of crystalline breakdown in the battery The positive and negative separators may cause the power battery to short-circuit and catch fire.
At present, with the increase in the number of electric vehicles, the demand for charging piles is also rising rapidly. However, because the charging pile is exposed to wind and rain for a long time, and the use environment is harsh, it is easy to cause dangerous accidents. For operators, it is more necessary to upgrade and maintain charging piles regularly.
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