There may be several reasons for the difficulty of charging BYD Dolphin electric vehicles in winter.
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First of all, low temperature will cause the internal resistance of the battery to increase, affecting the charge transfer efficiency, making the battery charge slower.
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Secondly, the battery itself is sensitive to low temperatures, and if the battery temperature is too low, it may cause the charging protection measures to automatically start, limiting the charging power.
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Finally, the cold environment will also have an impact on the performance of the charging device, such as the low temperature of the line and plug may lead to unstable connection or increased line resistance, affecting the charging effect. Therefore, in order to solve the problem of difficult charging in winter, it is necessary to take insulation measures, use high-quality charging equipment, and timely clean up snow and ice in bad weather to ensure that electric vehicles are charged normally in winter.
Byd cars do not charge when it is cold, mainly because lithium batteries decline in performance at low temperatures. Low temperature causes the internal freeze of the battery, the internal resistance increases, the chemical activity decreases, the discharge ability decreases sharply, or even does not discharge. The vehicle can be moved to a place with the right temperature to charge, and the battery will recover some of its capacity. However, if used at low temperatures for a long time, the battery will seriously decay or be scrapped due to low temperature lithium evolution. Therefore, pay attention to the impact of ambient temperature on the battery when using.