Energy saving and environmental protection are the two major themes of today's world development, and countries around the world are scrambling to develop energy-saving products such as electric vehicles. At the same time, it also drives the research and development of new environmentally friendly batteries such as lithium batteries and fuel cells. Driven by the huge potential of the international photovoltaic market, the photovoltaic manufacturing industries in various countries are scrambling to invest huge amounts of money to expand production in order to compete for a place. At present, the production cost of solar photovoltaic cells in China has dropped significantly, which has played a decisive role in the growth and maturity of the domestic solar energy market. In the future, under the strong support and active promotion of relevant policies, China's battery industry will develop faster, and accelerate the pace of catching up with Japan, the United States and other leading countries in the battery industry.