When the temperature is low, what will happen to the battery temperature control system of the new energy vehicle?


1. The charging speed is slow. Due to the low activity of lithium ions at low temperatures, the charging current will be limited in order to protect the battery vehicle, so the charging time will be slow.

2. The acceleration performance is unstable or the lithium ion activity is low. At this time, the battery output will also be protected. When the owner drives, the vehicle may accelerate slowly or the vehicle can only drive at a low speed.

3. The cruising range is abnormally shortened, and the battery performance is poor when the temperature is low, so the cruising range will be abnormally shortened. For example, the cruising range is displayed as 200 kilometers when you first get on the car, but the cruising range has dropped to 150 after just 5 kilometers. kilometers away.

In order to ensure the performance of new energy vehicles at low temperatures, major manufacturers have installed temperature control systems for new energy vehicles. At present, the mainstream temperature control systems in China are divided into two categories. Among them, the heat dissipation/heating form of water circulation is effective, but the cost is high; the air cooling/low temperature preheating form has a low cost, and the battery temperature is easy to be too high in summer.

Even if the temperature control system is adopted, the cruising range of new energy vehicles in winter still cannot be compared with that in spring, summer and autumn. After all, the heating system using electric auxiliary heat is still a big power consumer. The temperature control system will only allow the battery and motor to work stably and effectively, but will not increase the cruising range.