Is the battery recession of new energy vehicles serious in winter?

The driving range of electric vehicles is mainly related to two points: available battery energy and actual energy consumption.

Due to the electrochemical characteristics of the battery, the battery temperature is low in winter, the battery activity decreases, the internal resistance of the battery increases, the available energy decreases, and the driving range decreases faster than that at room temperature. When the battery temperature rises, the available energy in the battery will gradually recover. So don't worry too much. The decrease of driving range caused by weather is not the battery attenuation, but the available energy of the battery will naturally increase when the temperature rises.

Secondly, because air conditioning consumes energy, it is also a major reason for the reduction of mileage in winter.

Old drivers who often drive traditional cars know that turning on air conditioning and refrigeration in summer will consume extra engine power, leading to increased fuel consumption; Turning on the air conditioner in winter uses the waste heat of the engine to heat it, which will not bring additional energy loss. But in electric cars, it's just the opposite.

In summer, electric vehicles use electric air-conditioning compressors for refrigeration. The motor driving the compressor always works in the high efficiency range, and generally only needs about 1.5-2 kW to ensure the cooling effect in the car (you can think about it, the living room of nearly 30 square meters is cooled by 2 kW air conditioner).

In winter, the northern region may need as much as 5 kW of power to heat, in order to achieve the effect of interior insulation. The power consumption in this area is twice that in summer.

Let's do a little calculation first. According to the average power of automobile air conditioner 2 kW, it takes 4 kWh to drive for 2 hours, which is equivalent to about 24 kilometers when converted into mileage. Within 2 hours, the general driving distance in urban areas will not exceed 60 km. It can be seen that air conditioning and heating have a great influence on cruising range. Therefore, when using the air conditioner, the heating temperature can be appropriately reduced under the condition of comfortable body feeling, and a larger driving range can be obtained.

At the same time, the transmission resistance and rolling resistance of vehicles will increase at low temperature. Everyone should face this problem rationally. If the temperature rises, they will be revived immediately!