What are the types of new energy vehicle batteries

by:Power Kingdom     2021-07-10

The types of batteries for new energy vehicles include lithium batteries, nickel-hydrogen batteries, fuel cells, lead-acid batteries, and supercapacitors.

1. Lead-acid batteries: Lead-acid batteries have a history of more than 100 years and are widely used as starting power devices for gas turbine vehicles. It is also a perfect battery for pure electric vehicles. It is reliable, easy to obtain raw materials, and low in price; the specific power can also be considered as the driving force adjustment of pure electric vehicles. However, it has several shortcomings: one is low energy density, large mass and volume, first, the battery charging mileage is short; second, the application cycle is short and the application cost is too high.

2. Ni-MH battery: Ni-MH battery is an alkaline battery, the cycle system of nickel-hydrogen battery has long life, no memory, but the price is high.

3. Lithium-ion battery: As a new type of high-voltage, high-efficiency and relative-density rechargeable lithium-ion battery, lithium-ion battery has unique physical and photoelectric catalytic characteristics, and has common civilian and national security market expectation. Its characteristics are light weight, large energy storage technology, no pollution, no memory, and long use. Under the condition of the same volume and weight, the work capacity of lithium-ion batteries is twice that of rechargeable batteries and four times that of nickel-cadmium batteries. In addition, it is a truly green and environmentally friendly battery, and it is not easy to pollute the environment in the natural environment. It is the best battery car rechargeable battery at this stage. Since the 1990s, the design and application of lithium-ion batteries have been developed in China.

4. Nickel-cadmium batteries: The general consumption of nickel-cadmium batteries is only lead-acid batteries, with an energy density of 55w/h/kg and a specific power exceeding 190w/kg. It can be charged quickly, the cycle system is long, double the lead-acid battery, it can reach 2000 times, but the price is 4-5 times that of the lead-acid battery. Although its pre-purchase cost is relatively high, its long-term specific application cost is not high due to its advantages in kinetic energy and service life. The disadvantage is the memory, due to insufficient charging, it is easy to reduce the energy capacity of the rechargeable battery. After 10 applications, if there is memory, continue to charge 3-5 times to release the memory. In addition, cadmium is harmful, and attention should be paid to procurement to prevent cadmium from causing air pollution.

5. Sodium-sulfur battery: The advantages of sodium-sulfur battery: One is high energy density. Its basic theoretical energy density is 760W/kg, which is greater than 100W/kg, which is 34 times that of lead-acid batteries. The other is high-current, high-power charging and discharging. The charging and discharging current is generally 200300ma/mm2, which can release three times the kinetic energy instantly. Due to the solid electrolyte solution, the liquid electrolyte secondary battery has no lithium battery life and adverse reactions, and the battery charging current efficiency is 100%. The operating temperature of the sodium-sulfur battery is 300350℃, so heat insulation must be carried out in the rechargeable battery. High temperature corrosion is serious and the cell cycle is short. The existing selective vacuum pump thermal insulation technology can reasonably solve this problem. This is also a problem, such as the reliability of the characteristics and the application safety factor is not ideal.

For business owners unsure of how to effectively incorporate new technology into our sealed lead acid battery, life may have just become a little easier.
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