How to make electric bicycles safer when the new national standard is about to be implemented?
2024-05-09
In order to further improve the quality and safety level of lithium-ion batteries for electric bicycles and promote the safe and healthy development of the industry, the mandatory national standard for lithium-ion batteries for electric bicycles has been released and will be officially implemented on November 1, 2024. How to view the technical basis gap filled by the new national standard from scratch? What kind of impact will it bring? How to better strengthen the full chain management of electric bicycles? "News 1+1" connects He Penglin, Deputy Director of the Safety Technology Research Center of the China Institute of Electronic Technology Standardization, and Wang Xue, Member of the Shenzhen Political Consultative Conference and Associate Professor of Shenzhen Vocational and Technical University, to jointly pay attention to: How can electric bicycles be safer? How is the drafting process for the mandatory national standard release of lithium batteries for electric bicycles? What is the hardest part? He Penglin, Deputy Director of the Security Technology Research Center of the China Institute of Electronic Technology Standardization: This standard is a mandatory national standard. It is not only the bottom line to ensure the safety of our products, but also the threshold for product market access. Therefore, this standard has received widespread attention in the process of project approval, drafting, seeking opinions, and publicity. When drafting standards, electric bicycle manufacturers, battery manufacturers, testing agencies, certification agencies, industry associations, research institutes, regulatory agencies, and other parties actively participate, and the formulation of standards also needs to consider and balance the demands of all parties. The most difficult part of the standard setting process is determining the technical scale. As for common lithium batteries, there are also different material systems and technological routes, such as lithium manganese oxide batteries, lithium ferrous phosphate batteries, ternary lithium batteries, etc. The safety of these different products and the production level of different enterprises will also vary. Therefore, in the process of standard formulation, the most difficult thing is that we need to scientifically and reasonably determine the scale of technology, achieve survival of the fittest through these technical requirements, and help enterprises improve their safety level. In addition, there is a correlation between the safety and performance of lithium batteries. For example, the higher the energy density, the larger the capacity, the better the endurance, and the farther the user will ride. However, the higher the energy density, the lower the safety of the product may be. Therefore, the safety standard cannot be too long or too short, and it is indeed quite difficult to balance the relationship between performance and safety. The new national standard for lithium batteries for electric bicycles is about to be implemented, and small workshops will be phased out by the new standard? He Penglin, Deputy Director of the Safety Technology Research Center of China Institute of Electronic Technology Standardization: According to rough statistics, the top 9 enterprises in China's electric bicycle lithium battery production account for about 40% of the total market supply, while over 100 small enterprises account for 30% of the supply. The proportion of batteries supplied by small workshops is also about 30%. The batteries supplied by small workshops may often involve assembly and modification, many of which may use discarded batteries from car dismantling and recycling, or substandard batteries eliminated by some enterprises, and the safety of these batteries cannot be guaranteed. The new standard not only stipulates some testing requirements in safety requirements, but also explicitly prohibits the use of batteries with cascading utilization. This will inevitably raise the threshold for market access and will screen the technical routes and enterprises of future battery products. As a small workshop, perhaps
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