Battery is the power source of
Used Car and a key factor that has always restricted the development of Used Car.
The main performance indicators of
Used Electric Car batteries are specific energy, energy density, specific power, cycle life and cost. For Used Car to compete with
fuel vehicles, the key is to develop efficient batteries with higher energy, greater power and longer service life. So far, Used
Electric Car batteries have undergone three generations of development and have made breakthrough progress.
The first generation is lead-acid battery, mainly valve-regulated lead-acid battery (VRLA), due to its high specific energy, low price and high discharge rate.
The second generation is alkaline batteries, mainly including nickel cadmium (NJ-Cd), nickel metal hydride (Ni-MH), sodium sulfur (Na/S), lithium ion (Li-ion) and zinc air (Zn/Air), etc. Various batteries have higher specific energy and specific power than lead-acid batteries, thus greatly improving the power performance and driving range of Used Car, but their prices are higher than lead-acid batteries. The third generation is a battery based on fuel cells.
At present, it mainly refers to hydrogen fuel cells. Fuel cells directly convert the chemical energy of the fuel into electrical energy. The energy conversion efficiency is high, the specific energy and specific power are high, and the reaction process can be controlled. The energy conversion process can be carried out continuously, so it is an ideal car. Use batteries.
