What are the types of new energy batteries

In order to encourage green travel, new energy vehicles have developed rapidly in recent years, and pure electric new energy vehicles can be seen everywhere on the street. Due to the different positioning of various brand products, each manufacturer also has its own choice for power batteries, such as Toyota prefers nickel-metal hydride batteries, while Tesla and other brands of electric vehicles prefer lithium batteries. The following introduces the types of mainstream new energy batteries; lead-acid batteries lead-acid batteries are a relatively mature technology because of their lower cost. , And capable of high-rate discharge, it is still the only battery for electric vehicles that can be mass-produced. During the Beijing Olympics, there were 20 electric vehicles using lead-acid batteries to provide transportation services for the Olympics. However, the specific energy, specific power and energy density of lead-acid batteries are very low, and electric vehicles using this as a power source will not have good speed and cruising range. Although nickel-cadmium batteries and nickel-metal hydride batteries have better performance than lead-acid batteries, they contain heavy metals, which will pollute the environment after being used and abandoned. Ni-MH power batteries have just entered a mature stage, and are currently the only battery system that has been practically verified, commercialized and scaled up among the battery systems used in hybrid vehicles. Ni-MH power batteries account for 99% of the current hybrid battery market. Lithium batteries The traditional lead-acid batteries, nickel-cadmium batteries and nickel-metal hydride batteries are relatively mature in technology, but their use in automobiles as power batteries has greater problems. At present, more and more automobile manufacturers choose to use lithium batteries as power batteries for new energy vehicles. Because the lithium-ion power battery has the following advantages: high working voltage; large energy; small size; light weight; long cycle life; low self-discharge rate; no memory effect; no pollution, etc. Lithium iron phosphate battery Lithium iron phosphate battery is also a kind of lithium battery, its specific energy is less than half of the lithium cobalt oxide battery, but its safety is high, the number of cycles can reach 2000, the discharge is stable, the price is cheap, and it has become a new vehicle power s Choice. To put it simply, a fuel cell is a power generation device that directly converts the chemical energy in the fuel and oxidizer into electrical energy. Fuel and air are separately sent to the fuel cell to produce electricity. It looks like a battery with positive and negative poles and electrolytes from the outside, but in fact it can't'storage' but is a'power plant'. Because the fuel cell directly converts the chemical energy of the fuel into electrical energy without going through the combustion process, it is not restricted by the Carnot cycle. In the development of new energy vehicle batteries, nickel-metal hydride battery technology is the most mature and will continue to be the mainstream of new energy vehicles in the next three years. After that, nickel-metal hydride battery technology will compete with lithium iron phosphate and hydrogen fuel cells. Replaced by lithium batteries and fuel cells. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.