Since January 24, 2016, Zhang Xiangmu, Director of the Department of Equipment of the Ministry of Industry and Information Technology, announced at the China Electric Vehicles Centennial Forum (2016) that the Sanyuan Li-ion battery bus has been temporarily suspended from the recommended list of new energy vehicles. It has been the concern of companies, experts, and the media.
The main reason why the Ministry of Industry and Information Technology of the Ministry of Industry and Information Technology of the People's Republic of China suspended the inclusion of a three yuan lithium battery passenger train in the list of recommended energy vehicles is its safety.
Some people think that it is reasonable to suspend the subsidy for three yuan lithium battery buses. Yang Yusheng, an academician of the Chinese Academy of Engineering, mentioned at the China Electric Vehicles Centennials Forum (2016) that the higher the amount of power batteries, the higher the specific energy, the higher the probability of accidents and must pay full attention to safety. “At present, the quality of the Sanyuan battery produced by the domestic battery factory is uneven, and the original intention of the subsidy suspension is to regulate the industry and the market, and there is a certain necessity.†Yang Yusheng said.
There are also experts who disagree with this. Wang Qingsheng of the Institute of Functional Materials and New Energy Technology, St. Petersburg State Technical University in Russia, proposed on February 26 that the ternary materials and lithium iron phosphate and other cathode materials have their advantages and disadvantages. , but there is no security or insecurity. “Insecure material security is not judged by its own physical indicators. How to control and use it well during use is the most important thing.†Wang Qingsheng said, “What we need to do is to take advantage of battery materials and abandon our disadvantages.â€
The ternary material battery is not safe in the end
South Korea’s LG Chemicals and Samsung are the main manufacturers of triple lithium batteries. China’s suspension of inclusion in the New Energy Vehicle Catalogue, and the Korean government’s submission to the Chinese government on February 23, raised objections.
According to media reports, “Ministry of Industry and Information Technology has finally retired,†and new energy buses equipped with a ternary battery/lithium titanate battery (three yuan for cathode materials) group, if they are required to declare an entry list, can be submitted to the core organization for testing and confirmation. The competent authority submits the catalogue application.
If the report is true, then the controversy over the three yuan lithium battery seems to have a little look: power battery manufacturers as long as the production of lithium batteries with good quality, high performance, after testing by the core agencies, they can submit a directory, apply for subsidies .
What do these core testing organizations need to detect?
Experts once said that the safety hazard caused by the battery management system is more than that caused by the battery alone.
Ouyang Minggao, executive vice president of China Electric Vehicles, also recognized the importance of the battery management system. He believes that the problem of thermal runaway of electric vehicle battery is very complicated and harmful. Therefore, the battery management system has become the main protection against battery thermal safety accidents. It is necessary to manage the battery in a safe working area.
Therefore, since it is a test of a new energy bus, the safety of a Sanyuan Li-ion battery must be tested at the same time.
There have been industry insiders who expressed concern about the power battery industry: due to mixed Chinese battery manufacturing industry, the quality of batteries produced is uneven, and the number of safety accidents caused by power batteries in 2016 may increase.
The "aircraft" of China's new energy vehicle has been flying at a high speed on the takeoff runway. The safety issue is the first and most important directive. Only when it is confirmed that there is no safety problem can the gravity be thrown off and fly to high altitudes.
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