It is said that low temperature weather is the "killer" of car batteries, and it is very important to maintain the car in winter. Here are a few tips for winter cars for new energy vehicles.
First, the low temperature weather in winter has an impact on car charging, and there are ways to improve the efficiency of car charging in winter.
At the beginning of charging, it will be slower, and as the temperature of the car battery rises, the charging current will increase, and the charging efficiency will decrease compared with the summer. Because the charging of the car power battery is greatly affected by low temperatures, it is recommended to charge the car once every time you use up the car. At this time, the car battery temperature is higher, which can improve the charging efficiency of the car.
Second, charging in the cold weather of winter requires preheating the car's power battery.
In the car battery cell more than zero degrees can be charged normally, less than zero degrees need to heat the car battery, and when the car battery cell temperature rises to fifteen degrees, you can charge the car battery normally.
Third, in the winter to charge the car, after the car charging is over, the dashboard still has a current display, or it takes a while to show the maximum current charge when it is about to be charged.
When the external ambient temperature is too low, in order to ensure that the car battery current can be released normally, there will be a small current to heat the car power battery, so there is still a current after the car is charged. In order to protect the normal operation of the car's power battery, it is not possible to charge with a large current. If conditions permit, the battery is heated by slow charging first, and then fast charging is used, so that the charging efficiency will be accelerated.
Fourth, the method of storing the car in winter and keeping the car battery active.
In the winter, a long-term low temperature season, if possible, the car should be parked in a warm garage or the car should be warm and antifreeze measures. For example, covering the car with a warm car coat, in order to enhance the activity of the car battery, thereby increasing the capacity of the battery.
Fifth, the mileage of the car in winter is lower than in summer.
Car battery is an energy storage device, the battery charge and discharge is a chemical reaction process, affected by temperature, the activity of this chemical reaction changed. The low temperature causes the chemical reaction speed to slow down, the discharge current is reduced, and the usable capacity of the battery is reduced, which in turn produces the phenomenon of "the car battery is not durable".
After car testing, when the temperature is lower than minus five degrees, the mileage of the car battery will be reduced by about 10%.
Sixth, the method of increasing the mileage of the car in winter.
When the car starts or carries people, or when going uphill, try to avoid the situation of slamming on the acceleration, which can easily lead to the car's large current discharge, and the car should be allowed to run at a uniform speed. To prepare the car for warm-up, drive slowly and evenly for three to five minutes after starting the car, or charge the car battery to warm up, so that the car battery can adapt to the cold winter temperature before fully discharging.
Seventh, the maintenance method of long-term idle cars in winter.
It is necessary to disconnect the negative terminal head of the low-voltage battery, try to check the power of the car power battery regularly, charge the car in time, and avoid the long-term idleness of the car from causing power loss, affecting the capacity of the car battery and the length of battery life.