The first wave of decommissioning power batteries is coming. According to the industry, the service life of power batteries in new energy vehicles is generally about 3-5 years. When the battery capacity drops to about 75%, it will be eliminated.

　　The first wave of decommissioning power batteries is coming. According to the industry, the service life of power batteries in new energy vehicles is generally about 3-5 years. When the battery capacity drops to about 75%, it will be eliminated. From this calculation, the first batch of new energy vehicle power batteries put on the market is basically at the critical point of elimination. Forecasts from the China Automotive Technology Research Center show that from 2018 to 2020, the country's cumulative scrapped power batteries will reach 120,000 to 200,000 tons, and this number will soar to 350,000 tons by 2025.

　　Retired power batteries still have high energy value, and their cascading utilization has both environmental protection and economic value. "The cascading utilization of energy storage batteries has realized the full-life comprehensive application of batteries, maximizing their use value and economic benefits." Several industry insiders told reporters.

　　Enterprises are finding their way

　　According to Wang Zidong, director of the China Northern Vehicle Research Institute and the National 863 Power Battery Test Center, the cost of using lithium-ion battery systems for cascade use is about 1,000 yuan per kilowatt hour. If the cycle life exceeds 1,000 times, the cost performance will exceed that of lead-acid. Battery, "In fact, the cycle life will exceed 3000 times, so the cascade utilization of power batteries is very competitive."

　　Faced with the huge space of cascade utilization, companies have realized the business opportunities and are actively exploring the way. For example, Shanghai Xuda New Energy has implemented power battery cascade utilization energy storage projects in Shanghai, Jiangsu, Guangzhou and Zhejiang.

　　"The cost of energy storage systems for cascaded use of lithium batteries has now entered a new era of 1 yuan/Wh, and user-side energy storage applications have commercial promotion value." Li Jianduo, general manager of Shanghai Xuda New Energy, said in an interview with reporters. "In contrast The cost of energy storage for new batteries, such as lead-carbon battery system costs at 1.3 yuan-1.4 yuan/Wh, and lithium battery systems at 2 yuan/Wh. It can be seen that the cost advantage of cascading energy storage is obvious."

　　The viable business model of using energy storage cascades has mobilized the enthusiasm of enterprises to enter this field. During the interview, the reporter learned that many companies have set their sights on this.

　　"Menshi Technology is planning to apply the decommissioned power batteries in electric vehicles to the field of energy storage." Wang Yu, general manager of Shenzhen Clean Power of Mengshi Technology, revealed.

　　"We are exploring and storing cascaded energy storage projects. At present, there are more cascaded energy storage used on the user side in China. Through the peak-to-valley arbitrage, there is a good profit margin. Adding cascaded energy storage to new energy consumption, It will also have a lot of application space." Wang Yu told reporters.

　　"We are also vigorously exploring the cascade utilization of energy storage and making some technical reserves." Ganzhou Highpower Technology General Manager told reporters, "The cascade utilization market is a process of gradual cultivation, as the amount of scrap batteries of the same model continues to grow. It is believed that in 1-2 years, the economics of cascaded energy storage will be better reflected."