What are the effects of new energy vehicles in winter?

With the arrival of winter, the temperature is gradually decreasing, and the endurance of new energy vehicles is particularly strong, sometimes the endurance is less than half of the original. In cold weather, because new energy vehicles mainly rely on lithium batteries, lithium batteries have a characteristic, that is, the power consumption capacity will be enhanced in cold weather, and the chemical reaction of lithium batteries will be directly slowed down in low temperature weather, so the discharge current will be reduced and the battery capacity will be reduced. In addition, we usually need to drive and use electricity for heating, which greatly increases the power consumption. Originally, the battery life of electric vehicles was short, which would shorten the battery life of electric vehicles.

Accelerated performance attenuation

We all know that new energy vehicles are powered by batteries, but when the temperature is low in winter, the batteries will decay. Under normal circumstances, the attenuation can reach 30%, so many car owners often feel that the power of new energy vehicles is not particularly sufficient, and many car owners find it difficult to speed up! This is because at low temperature, the viscosity and conductivity of lithium battery electrolyte will decrease, and the activity of active substances will also decrease, which will increase the concentration of electrolyte, enhance polarization, slow down the diffusion of lithium ions in carbon negative electrode, and lead to the precipitation of lithium. Generally, when the temperature drops to-10℃, the discharge capacity and working voltage of lithium-ion batteries will decrease. When the battery core temperature is lower than 15 degrees Celsius, the vehicle limits the power output, so it can't increase the speed, so there will be a feeling that the vehicle can't accelerate.

Side length of charging time

In different regions and climates, if the car is used under these two conditions, the reaction conditions at this temperature will affect the chemical reaction efficiency inside the power battery, because when the temperature is too low, the chemical reaction inside the battery will slow down or stop, so when the battery is below 0℃, the system will heat the battery first, and when the temperature reaches above 5℃, it will start charging the car, which indirectly leads to a particularly long charging time even if the new energy car is used.

When using new energy vehicles in winter, it is suggested to avoid stepping on acceleration as much as possible, resulting in large current discharge. If charging, it is best to park the car in a warm garage to charge, which will help improve the activity of the power battery, not only reduce the loss of cruising range, but also improve the charging efficiency and save time.