The source of electric energy for Electric Car is their batteries. In order to increase the driving range of Electric Car, the capacity of the battery must be large enough. However, increasing the capacity of the battery will increase the volume of the battery pack and the mass, which will affect the power of the vehicle and the layout of the whole vehicle. Therefore, Electric Car need to select batteries according to the design goals of Electric Car and different road driving conditions. The performance requirements of Electric Car for batteries are summarized as follows:
1. The capacity of the battery must be large enough to meet the design goals of the driving range of Electric Car. In addition, the capacity and energy of the battery should ensure the power supply capacity of the vehicle under specific working conditions.
2. The current output in the current during discharge is called the discharge current, and the current flowing through the battery during charging is called the charging current. Therefore, it is required that the battery of Electric Car can work under full load and achieve full discharge when necessary, without affecting the life of the battery.
3. The specific energy and energy density of the battery should be as large as possible to reduce the structural size of the battery pack, reduce the mass of the battery pack, facilitate the overall structural design of the vehicle, and ensure the power and passenger space of the Electric SUV Car.
4. The cycle life of a battery refers to the total number of charging cycles that a battery undergoes before the battery capacity reaches a certain specified value, with one charge and discharge as one cycle, according to certain test standards. Cycle life is an important criterion for evaluating battery life performance.
5. Anti-abuse capability refers to the tolerance of Electric SUV Car batteries to abnormal use conditions such as short circuit, overcharge, over discharge, mechanical vibration, impact, extrusion, high temperature and fire.