At present, many countries have promulgated laws and regulations on the elimination of petroleum fuel vehicles in the future, that is, new energy vehicles will gradually replace fuel vehicles in the next few decades. This means that electric vehicles and their power batteries will gradually become a huge market. At present, the absolute main force on the road is still the fuel car. Eliminating fuel vehicles in a short period of time is not realistic. However, at least one thing is certain - the continued development of electric vehicles is an unstoppable trend. European countries have also set time limits for the sale of fuel vehicles. In this regard, more aggressive countries like Norway have made 2025 the year to stop selling fuel cars and 2040 the year of more moderate UK laws. According to the situation in China, the phase-out of petroleum-fueled vehicles should be 10 to 20 years later than in Europe. However, there is no doubt that new energy vehicles represented by electric vehic