What are the requirements for power batteries for new energy vehicles?

1) High specific energy (which is related to the distance that can be traveled on a single charge). The power battery capacity is limited and a breakthrough has not been achieved. The driving range of electric vehicles currently on the market after a single charge is generally 100km to 300km, and this requires maintaining an appropriate driving speed and a good power battery regulation system. However, the vast majority of electric vehicles do not operate normally during normal driving. The driving range under environmental conditions is only 50km to 100km.
2) High power (it involves the acceleration characteristics and climbing ability of electric vehicles).
3) Long cycle life (it involves flow costs). At present, the cycle life of power battery packs in practical applications is short. The number of charge and discharge times of ordinary power batteries is only 300 to 400 times. Even the number of charge and discharge times of power batteries with good performance is only 700 to 900 times. Calculated based on 200 charge and discharge times per year. The life of a power battery is up to 4 years, which is too short compared with the life of a fuel vehicle.
4) High charging and discharging efficiency (it involves saving energy and costs).
5) The source of raw materials is abundant and the cost is low (it involves capital construction costs, etc.). At present, the price of electric vehicle power batteries is about US$100/kwh, and some are even as high as US$350/kwh. The cost is too high for users to bear.
6) Safety (it is related to whether it is reliable and convenient during use). The safety of power batteries cannot be guaranteed. The industrialization of small and medium-capacity lithium power batteries has been very successful, but the safety issues of large-capacity and high-power lithium power batteries have not been effectively solved. The larger the capacity of the power battery, the greater the harm it will cause if it goes out of control. Regarding the safety of power batteries, it is necessary to carry out research on the overall safety scheme of the power battery system on the basis of electrical safety, mechanical safety and thermal safety, and carry out fault diagnosis and prediction, thermal safety monitoring and early warning and key prevention and control technologies for the power battery system.