Recently, the temperature has been slowly dropping. The air is getting drier The use of electric bicycles is increasing Autumn and winter are the peak seasons for electric bicycle fire accidents Everyone must take precautions! Fire caused by charging electric bicycles Case warnings occurred more than once 01 On November 2, 2024, a carport in a community on Shulin Street in Kunming, Yunnan Province, suddenly caught fire. The colored steel tiles on the top of the carport had collapsed, the trunk of a large tree next to it was burned black, and more than 20 electric bicycles were burned. The fire started from an electric bicycle charger. Last year, electric bicycle owners were reminded not to use the charger if the temperature was too high, but to no avail. 02 On the night of March 13, 2024, a fire broke out in the corridor of a residential building in Ezhou, Hubei, trapping many people inside the building. After on-site inspection, it was found that the cause of the fire was that Yin , a resident of the building, illegally parked his electric bicycle and privately connected wires to charge it, which ignited the surrounding combustibles. Battery charging experiment at different temperatures Lower temperatures in autumn and winter E-bike batteries can experience performance degradation Compared with normal temperature Charging time will increase at low temperatures The driving range is significantly shortened Let’s take a look at this with a set of experiments! 01.Charge at room temperature The temperature of the test chamber was set at 25 degrees Celsius Connect to a 3A charger for charging 02. Low temperature charging The temperature of the test chamber is set to -10 degrees Celsius Connect to a 3A charger for charging 03. Experimental summary The experimental data shows that charging under two conditions When the same cut-off voltage is reached In low temperature environment The battery capacity is low and the charging time is long 04. Cognitive misunderstandings ❌ Many users think that by extending the charging time You can improve battery life This ultimately leads to safety risks such as long-term charging and overcharging. Then in autumn and winter How to charge scientifically Ensure battery performance How to prevent safety accidents at the same time? Some pictures are from the Internet. If there is any infringement, please contact us to delete them. |
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