Battery PCB circuit board: What kind of battery is used in new energy vehicles?

Battery PCB circuit board: What kind of battery is used in new energy vehicles?

Since Tesla was hyped, several news about new energy batteries and battery circuit boards have appeared almost every once in a while. What Toyota hydrogen fuel electric vehicles, aluminum battery electric vehicles that can run for 1,600 kilometers, flow battery vehicles that can run for 600 kilometers on a single charge, graphene batteries, aluminum ion batteries... It seems that we are using lithium batteries now is simply too stupid , The new energy revolution should have arrived long ago, but is the fact really as good as the news? Please take a look at it with the battery circuit board editor below.

The truth about electric vehicle batteries (circuit boards) The core technologies of electric vehicles are batteries, motors, electronic controls, and battery circuit boards, and then the chassis technology of traditional cars. Among them, the motor technology is now relatively mature, and the electronic control is also improving with Moore's Law. The automobile chassis technology has been developed for so many years, and it is not a bottleneck.

The core problem of electric vehicles is the battery. For electric vehicles, the ideal battery should have the following characteristics:

1. There is enough energy density and enough capacity per unit volume and unit weight, so that it can run farther.

2. With sufficient power density, enough power can be generated per unit volume and unit weight, so that the car can accelerate fast and climb hills.

3. The energy replenishment speed must be fast, and the charging or battery replacement must be fast, otherwise it can only be limited to commuting in the city, running during the day and charging at night.

4. The average use cost should be cheap, and the life span and price should be competitive.

There are mainly two types of electric vehicles on the market, a lithium-ion battery for high-speed electric vehicles, including lithium manganate, ternary lithium batteries and so on. There is also a lead-acid battery for low-speed electric vehicles. According to the requirements of electric vehicles, the power density and energy density of lithium batteries are good, but the charging is not fast and the price is high. Without subsidy support, it can only be used in high-positioning models like Tesla. Lead-acid batteries have low power density and energy density and slow charging, but the price is relatively cheap, and it is more suitable for short-distance low-speed electric vehicles. But there is a pollution problem, and now China does not encourage development.

This battery and that battery, which are very good in other rumors, unfortunately have not been mass-produced on the road. There are several experimental bus lines in use. It has really passed the practical test, and these two can be used on a large scale in reality. The rumors that advanced batteries are either not reliable at all or are still in the laboratory stage.