At present, pure electric vehicles are mainly equipped with ternary lithium batteries, and some models use lithium iron phosphate batteries, both of which are liquid batteries. Therefore, in the later use process, if deformation occurs, spontaneous combustion is easy to occur. In addition, as a liquid battery, it is obviously affected by temperature, especially the chemical reaction is inhibited at low temperature, which will directly affect the endurance performance. In order to alleviate this situation, many car companies began to lay out solid-state batteries.
Solid-state battery adopts solid electrolyte, which has wider working temperature range, stronger stability and higher energy density of solid electrolyte, which means it can provide longer cruising range. Therefore, if solid-state batteries can be really applied to automobiles, it can effectively alleviate the disadvantages of pure electric vehicles at present, thus expanding market sales.
But it should be noted that although the advantages of solid-state batteries are obvious, the disadvantages still exist. At present, the two most important disadvantages of solid-state batteries are long charging time and high production cost. Because of the use of solid electrolyte, the rate of solid battery is very low, which leads to long charging time and high production cost, so it has not been widely used at present.
Of course, Japanese car companies suddenly promote the research of solid-state batteries. Apart from the above advantages, solid-state batteries can be used as power stations in emergencies because Japan is a country lacking in resources. So now some Japanese car companies such as Toyota are also accelerating the development of solid-state batteries.
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.