The amount of electricity stored in the battery of a battery car is related to the temperature. When charging and discharging the battery, electrochemical reactions occur on the battery electrodes. The higher the temperature, the activity of each active material in the battery increases, the viscosity of the electrolyte decreases, and the resistance decreases. Therefore, the electrochemical reaction proceeds easily, and vice versa. .

The lower the temperature during discharging, the lower the discharge capacity. At particularly low temperatures, the discharge capacity will drop significantly, and the opposite is true at high temperatures; the lower the temperature during charging, the worse the charge acceptance capacity. Requirements The charging voltage is higher to fully charge.

On the contrary, the higher the temperature, the better the charge acceptance ability, which can easily cause overcharge. Therefore, it is required to reduce the charging voltage to avoid overcharge. This temperature change directly affects battery charging and discharging performance.

Extended information

Purchase method:

1. Check whether the electric vehicle battery product logo is complete. Including the manufacturer name, product specifications and models, manufacturing date, and trademark; check whether the internal and external marks are consistent, especially check whether the product body has eye-catching logos and production dates.

2. Pay attention to the appearance of the electric vehicle battery. Check for deformation, cracks, scratches and signs of leakage. The battery terminals should be clean, free of rust, and clearly marked.

3. Pay attention to the rated capacity marked on electric vehicle battery products. The larger the rated capacity marked on the battery, the longer the battery discharge time. It is best not to buy batteries without rated markings, but pay attention to whether they are specially designed for electric vehicles.

4. Choose brand batteries from well-known companies and large companies. Batteries are generally provided by professional battery manufacturers. Batteries produced by different brands and manufacturers vary in quality and price. Well-known and large enterprises have large scale, strong technology, good after-sales service, and guaranteed battery quality.

5. Choose an intelligent charger with automatic control that matches the battery. A suitable charger can automatically adjust the charging size and time, which will help extend the life of the battery.