With the vigorous promotion of national policies and the investment of new energy vehicles in the automobile market, new energy vehicles occupy the majority of the automobile field, which has become an important tool for our future travel. With the rapid development of new energy vehicles, the surrounding industries have also been driven. New energy vehicles are an important one. What kinds of new energy batteries are there now ？ Now let's introduce it to you!
The introduction of new energy vehicle battery -- lead acid battery
As a mature technology, lead-acid battery is still the only battery for mass production of electric vehicles because of its low cost and high rate of discharge. At the Beijing Olympic Games, there were 20 electric vehicles using lead-acid batteries to provide transport services for the games. But the specific energy, specific power and energy density of lead-acid battery are very low, so the electric vehicle with this power source can not have good speed and range.
Introduction of new energy vehicle battery -- nickel cadmium battery and nickel hydrogen battery
Although the performance of lead-acid battery is better than that of lead-acid battery, it contains heavy metals, which will pollute the environment after being abandoned. NiMH battery has just entered the mature period. It is the only battery system that has been actually verified and commercialized in the current battery system of hybrid vehicles. 99% of the current market share of hybrid battery is NiMH battery, and the representative of commercialization is Toyota's Prius. At present, the main automotive power battery manufacturers in the world are PEVE and Sanyo in Japan. PEVE accounts for 85% of the global market share of NiMH batteries for hybrid vehicles. At present, the main commercial hybrid vehicles such as Prius, Alphard and estima of Toyota, civic and insight of Honda all use PEVE's NIMH batteries. In China, Changan Jiexun, Chery A5, FAW Pentium, GM Junyue and other brands of cars are already in demonstration operation, and they also use nickel hydrogen batteries, but the batteries are mainly purchased from abroad, and the domestic application of nickel hydrogen batteries in automobiles is still in the stage of R & D and matching.
Introduction of battery types of new energy vehicles -- ternary lithium battery and graphene battery
Lithium battery with lithium nickel cobalt manganese as cathode material. Compared with the lithium cobaltic acid battery, the safety is high, but the voltage is too low. The energy density is between lithium iron phosphate battery and lithium cobalt 18650 battery. The future development trend of new energy vehicle battery is suitable for the weather in the north, and the battery is more stable at low temperature. Adding graphene in the lithium battery can help the lithium battery to reduce the heat capacity, reduce the energy loss, and ultimately avoid a lot of energy waste. At the same time, it can reduce the damage of heat to the battery and improve the service life of the battery. The popularization of graphene battery will be a leap forward for electric vehicles. Once graphene battery is applied to new energy vehicles, it will be a subversive change for the whole automobile industry.
