The vigorous development of renewable energy will have an impact on the safety and stability of the power system. Batteries have become the key technologies for building a new energy society and developing new energy vehicles. China's new energy development and smart grid construction require the simultaneous development of the battery industry. The classification of the battery. Batteries are used for many purposes. They are related to renewable energy and smart grids and can be divided into power system batteries, user-side batteries, and new-energy automotive batteries. The battery for power system is mainly used to deal with the surplus power and frequency changes caused by the development of renewable energy ; the user-side battery is mainly used for building urban and island-type energy management systems ; the new energy vehicle battery is mainly to improve its practicality and efficiency. Sex, reduce costs, raise the level of standardization. China's battery industry status. With the support of national policies, the battery industry in China has developed rapidly in recent years. The battery industry technology has been continuously upgraded and the output has been continuously improved. According to relevant statistics, as of the end of 2007 , China’s nickel-metal hydride storage battery had a world market share of 22% , ranking second in the world ; nickel-cadmium batteries had a world market share of 41% , ranking second in the world ; and lithium-ion battery world share. 13% , ranking third in the world. World Battery Industry Development Forecast. According to the forecast of the IEA's demand for batteries, the demand for large-scale batteries for the power system will increase to around 50 million kilowatts by 2020 due to the increase in the demand for batteries in Western Europe . With the development of new energy vehicles, the world’s automobiles will be used in 2015. If the battery production capacity is converted into the number of electric vehicles, it will expand to 1.5 million units, and its capacity will exceed 30 million kWh. The main challenges and suggestions. Battery technology has become a key technology for promoting the development of renewable energy, smart grids, and electric vehicles, and has attracted worldwide attention. Foreign countries often determine the battery industry policy from the perspective of the development of electric vehicles and smart grids, represented by the US$ 2.4 billion New Energy and New Deal. Europe, South Korea and other countries have actively carried out battery research and development and have also issued a series of preferential investment and financing policies. Faced with the development of the era of new requirements for battery capacity, high performance, low cost, China's battery industry must take the road of sustainable development. At present, it is mainly facing technical development, international standardization, ensuring raw material supply, reuse and recycling. Technology development issues. The technologies related to battery industry development mainly include materials technology, processing technology and equipment technology. Compared with Japan, Germany and other battery industry technology developed countries, China is mainly faced with the problems of lack of scientific research and development personnel in technology development, over-reliance on foreign technology, insufficient basic research and applied research, insufficient protection of intellectual property rights and loss of technology. The government is advised to increase the financial support for battery technology research and development, build a battery technology R&D mechanism integrating production, education and research, increase personnel training and intellectual property protection, strengthen forward-looking basic research, and increase integration with large-scale wind power and photovoltaic power generation. The research and development efforts include power storage technology, battery technology that promotes the popularization of electric vehicles, basic technology for evaluating battery materials, and battery technology that promotes optimal use of resources in line with the development of distributed energy. International standardization issues. Participation in the formulation of international standards can, on the one hand, lead the development of battery technology and, on the other, clear the obstacles for domestic companies to enter the international technology market. European and American countries and Japan are vigorously fighting for the international standards of battery technology. Our country needs to stand at the height of the national strategy, delineate major technology fields, and lock down major technologies based on accurately grasping the trend of the battery international market, analyzing the current state of market competition, fully analyzing the strengths and weaknesses of China's technology, and fully considering the advantages and disadvantages of international standardization. Tackling key projects, draw the roadmap for China's battery international standards, and build a roadmap implementation mechanism. According to the relevant requirements of IEC and other international standards organizations, actively submit standard proposals, conduct dynamic tracking, adjust response measures in a timely manner, and strive to win the right to speak international standards. Supply of raw materials. The restriction of raw materials will directly affect the cost of the battery, and thus affect the international competitiveness and sustainable development capabilities. According to relevant statistics, China's battery primary lithium raw material production accounts for 14% of global production, nickel production accounts for 4.5% of global production, manganese production accounts for 9.2% of the world, cobalt is almost dependent on imports. It is recommended to increase technology research and development on the one hand and improve raw material saving capacity ; on the other hand, it should establish good cooperative relations with countries rich in raw materials such as Australia, Chile, Canada, and Russia, and build cooperation and development mechanisms with resource-rich countries to ensure the supply of raw materials. . Reuse and recycle problems. Batteries contain harmful substances such as lead, cadmium, and dilute sulfuric acid in the positive and negative electrode materials and electrolytes. Improper handling can cause environmental pollution. Recycling and recycling of storage batteries are both conducive to environmental protection and beneficial to the saving of raw materials and lower production costs. At present, China's system for the reuse and recycling of batteries needs further improvement. It is recommended that the state increase publicity efforts to increase public awareness of recycling and recycling of storage batteries ; through legislation, relevant enterprises should be encouraged to promote the recycling and recycling of storage batteries ; a paid recycling policy should be introduced to set up battery recovery points in factories, office buildings, and residential areas. Guide the public to actively participate in battery recycling activities ; introduce a system to encourage the extraction of rare metals from recycled used batteries.