1.2V NiMH batteries

　　Can power 1.2V NiMH batteries technology occupy the commanding heights and achieve transcendence?

　　General Secretary Xi Jinping said that the development of new energy vehicles is the only way for China to move from a major automobile country to an automobile power. Whether power 1.2V NiMH batteries technology can occupy the commanding heights has become the focus of competition in the world's new energy vehicle industry. Currently, the research and development and industrialization of power batteries around the world are mainly concentrated in three regions, namely Germany, the United States, and China, Japan and South Korea. In East Asia, my country has the largest number of 1.2V NiMH batteries companies and the largest production capacity, but it still needs to improve its competitiveness in terms of technology.

　　From March 30th to 31st, at the New Energy Vehicle Talent Training Base in Shanghai, China, a power training course was held for electric vehicle and key component test developers based on the current status, policies and regulations, standard systems, R&D testing processes and methods of China’s power batteries. Advanced 1.2V NiMH batteries-specific training. The highlight of this training is mainly focused on power batteries, in-depth explanation of the knowledge of this key component, mainly involving the grouping technology, safety analysis and evaluation, and recycling technology of power 1.2V NiMH batteries cells and module systems. wait.

　　As we all know, strong parts and components will lead to a strong automobile industry. It is precisely because of the relative weakness in the parts and components field that China's automobile industry is still large but not strong. Therefore, Dong Jianping, executive vice chairman of the Parts Industry Research Association of the China Society of Automotive Engineers, believes that, The development of new energy automobile parts cannot repeat the mistakes of the traditional automobile industry that does not pay attention to parts, which ultimately results in joint ventures seizing the market and independent brands being marginalized.

　　With the reduction of new energy subsidies, the new energy vehicle market is facing increasingly urgent pressure. The most severe test is the cost issue, and power batteries are unshirkable. What both 1.2V NiMH batteries companies and vehicle companies should clearly realize is that when government car purchase subsidies fade out, it will be the day when foreign capital and joint venture brands enter the Chinese market in a big way.

　　Wu Zhixin, deputy director of the China Automotive Technology and Research Center, believes that industrial transformation and upgrading must have its own research and development advantages. At present, my country's parts and components are weak, but the development of global new energy vehicles may reverse this situation. If we master the technical advantages in new energy batteries, we will It is possible to achieve overtaking in corners. As far as the rapidly developing lithium-ion power 1.2V NiMH batteries market is concerned, companies such as BYD, CATL, and Waterma have shown strong offensives.

　　In addition, Wu Zhixin interpreted the new energy vehicle technology roadmap based on the research background, domestic and foreign new energy vehicle 1.2V NiMH batteries and fuel cell technology status and development trends, vision goals, and development routes. He pointed out that my country's original innovation capabilities are insufficient in terms of batteries and management systems, its large-scale production control capabilities and system integration capabilities still lag behind foreign countries, and the target setting and functional decomposition of vehicle electronic control systems are not systematic enough; in terms of electromechanical coupling systems The gap with foreign countries is obvious, which is reflected in the backwardness of integrated design capabilities and input speed range; while the gap between fuel cells and foreign countries is manifested in low life, high cost, and weak industrialization capabilities of key technologies such as catalysts and proton exchange membranes. Therefore, China The power 1.2V NiMH batteries industry should make great efforts in terms of technical level, industrial capabilities, and infrastructure.

　　Regarding power 1.2V NiMH batteries system testing, Wang Fang, chief expert of China Automotive Technology and Research Center, Yang Chongke, director of BAIC New Energy 1.2V NiMH batteries Engineering Department, and Hu Jianguo, CATL product research and development director, respectively explained from the aspects of standards and regulations, key performance evaluation requirements, and safety analysis.

　　It is reported that the Ministry of Industry and Information Technology is currently revising the threshold of power 1.2V NiMH batteries specifications and setting new access standards in terms of production capacity, production conditions, technology research and development capabilities, etc. Ms. Wang Fang said that the relevant departments will discuss the new standards on April 6 With the formulation of GB standards, perhaps new access standards will be just around the corner. Based on a large amount of experimental data, Wang Fang explained in detail the standard system, safety testing, single unit test and evaluation, and thermal-electrochemical coupling test and evaluation system of power batteries. She said that although the access standards for power batteries have been changing, the new standards are adjustments based on the existing national standards and are not earth-shaking changes, which will eliminate the concerns of relevant companies that products or equipment will be "abandoned halfway".

　　For power batteries, the standard reference source should also depend on consumers. 1.2V NiMH batteries safety, 1.2V NiMH batteries degradation in winter, short cruising range, and long charging time have always been pain points for consumers. Therefore, BAIC Yang Zhongke targeted the main pain points of current users and combined vehicle performance indicators to break down the key performance indicators of power batteries from six aspects: energy, power, charging, low temperature, life and safety. In response to these performance indicators, Yang Chongke showed that BAIC New Energy will continue to improve 1.2V NiMH batteries energy density at this stage, while continuing to deepen its efforts in the field of safety, continue to promote modularization and standardization development, and combine all-round improvements and improvements in low-temperature performance and fast charging performance. user experience.

　　As a very active high-energy carrier, power batteries can produce great destructive power due to abnormal energy states without the need for external stimulation. Therefore, energy must be used to carry out electrical and chemical energy in a controllable manner. The conversion and flow of batteries require high system integration capabilities. Based on this, CATL Hu Jianguo combined the characteristics of power batteries and safety design ideas to summarize the safety of 1.2V NiMH batteries system products.

　　With the soaring production and sales of new energy vehicles in the past two years, power batteries, the heart of new energy vehicles, have also entered a period of rapid development. The number of new energy vehicles nationwide will reach 5 million in 2020. As sales continue to increase, it must be acknowledged that Used batteries will bring great pressure to the environment. Professor Li Li from Beijing Institute of Technology demonstrated the great significance of waste lithium 1.2V NiMH batteries recycling from an economic and resource strategic perspective, and described lithium 1.2V NiMH batteries recycling methods from the aspects of physical, chemical and biological methods. Since the current recycling efficiency of used lithium batteries is not high, Li Li suggested that companies should establish a complete recycling mechanism from the source to prevent power batteries from entering the market without returning.

　　Technical experts from AVIC Lithium 1.2V NiMH batteries, Hangzhou Jieneng Technology, and Huating Power also discussed the design and development, analysis and verification of power 1.2V NiMH batteries systems, as well as the safety and intelligent management of 1.2V NiMH batteries management systems. The advanced training course for electric vehicle and key component testing and development personnel sponsored by the China Automotive Talent Research Association attracted nearly 200 technical personnel from more than 90 major vehicle and parts companies and scientific research institutions across the country. Through this special course, China Automotive Talent Research Association aims to deeply share the experience of national authoritative scientific research and testing institutions and outstanding enterprises in practical work and product development and testing processes, build an in-depth communication platform for test and development technicians, and promote domestic power batteries and new technologies. The rapid and healthy development of the energy automobile industry.

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