Power lithium battery face new topics: high security, low cost, recycling

　　Author ：Iflowpower – Portable Power Station Supplier

After years of development, my country has become the world's largest new energy vehicle market, and the power lithium-ion battery has received attention as its core components. With the advancement of battery technology and the new energy vehicle market, the market has gradually developed from pursuit of high-energy density, low cost, and recyclable direction from pursuit of high-energy densities. ■ Strengthening the battery active safety prevention and control has recently connected the number of electric vehicles that occur in the electric vehicle, which makes the topic of security do not decrease.

In 2019, 2019, my country (Qinghai) Lithium Industry and Power Lithium Ion Battery International Summit, Academician of my country, my country Electric Motors, Vice Chairman Ouyang Ming, said that the current safety accident is a fatal hidden danger of new energy automotive industries. And the dynamic lithium-ion battery thermal out of control is the essence of safety incidents. By research on the thermal-active lithium-ion battery thermal out-of-control - machine-electrical coupling mechanism, it is found that during three processes of thermal out-of control, the occurrence and spread of the battery, the battery is charged, the battery is short-circuited, the cell is thermostat and the battery.

Systematic thermal spread is the root cause of security issues, which can utilize fast charge control, battery management, thermal design and thermal management, etc. to achieve active safety prevention and control of dynamic lithium-ion battery heat. Analysis of the statistical data of new energy vehicle accidents in 2018, the ratio of accidents occurred during charging, including: Fast charge is not frequently triggered, so that the fast attenuation of battery life and the thermal stability are deteriorated; the safety design level of charging function is low; Charging process data communication irregularity, etc.

Ouyang Minggao pointed out that the energy density of lithium-ion battery has reached 300WH / kg, and it will continue to improve in the future. In this case, the requirements for battery safety prevention and control technology will become higher and higher. The industry should focus on solving lithium-ion battery safety issues, develop more secure dynamic lithium-ion batteries to ensure the smooth development of electric automotive industry.

Wang Nian, president of Tianjin Li Shen Battery Co., Ltd., held a similar point of view, he believes that at least in the next 10 years, the lithium-ion battery is still an important solution for electric vehicle power, and it is necessary to improve the battery energy density.

Manufacturing links ensure high safety of batteries. In addition to the technical level, what should I guarantee battery safety? In this regard, as the Authoritative Vehicle Testing agency of Europe, Vice President of Dekay Group, President, East Asia and South Asia, Zeng Husou pointed out that electric vehicles and dynamic lithium-ion battery safety must not only pay attention to the design level, but also pay attention to testing and verification. Security Guarantee.

■ Electricization promoted new state electricization not only lets the face of the automobile industry, but also accelerates the automotive industry and energy, technology and other industries accelerate cross-border integration. Due to the removable, separable, controllable characteristics of the power lithium ion battery, automotive electricity continuously promoting new industrial ecology and business models. my country Electric Motors Phase I Secretary and Chief Experts Zhang Yongwei Announced the Power Lithium Ion Battery to flow: Dynamic Lithium Ion Battery Full Lifecycle Asset Operation Management "pointed out: battery as a movable energy storage vector, can be renewable Energy efficient combination, and participate in the power grid adjustment; battery as separate special assets, can promote new business models, such as vehicle-saving separation vehicles or battery rental modes, based on shared economy-based rental mode, etc.

Controlable intelligent units, can be combined with intelligent, netizenal technology, integrating energy internet system. Zhang Yongwei said that the monitoring, evaluation, utilization, regeneration and innovation financial model of dynamic lithium-ion battery is the key to perfecting its full life cycle cycle system. Among them, battery monitoring can be based on battery health status and value assessment.

Value; the value of the valid metal in the scrap battery has resource recovery value; including green credit, bonds, funds, insurance, etc., green finance, etc., which helps to mitigate the company's funding and reduce the company's operational risks.

■ Battery recycling reuses to break through with new energy automotive production and sales volume and dynamic lithium-ion battery shipments, how to recycle the power lithium-ion battery and then become a problem in front of the industry. According to the statistics of my country's Automotive Technology Research Center Co., Ltd.

, my country's new energy vehicle power lithium-ion batteries entered the scale of water in 2018. It is expected that the annual report will reach 4809 million tons in 2023. Among them, the number of lithium iron phosphate ion batteries in the waste cells in the waste batteries are expected to increase the number of scraps of the three-yuan battery in 2021.

In the 2023, the waste of the three-yuan battery will be greater than the lithium iron phosphate ion battery. At present, my country's dynamic lithium-ion battery recovery is important in three aspects: First, it is to implement the production of responsible extension system. Second, the establishment of improvement of dynamic lithium-ion battery recycling system, the third is to strengthen industry supervision of industry companies.

At present, my country has initially formed the dynamic lithium-ion battery ladder utilization and recycling system with the main body of the whole vehicle, the battery and the third party. According to the statistics of the Ministry of Industry and Information Technology, as of the end of 2018, my country's retired battery recycling service outlets reached 3204. However, although there is a certain result, there are still many problems in the battery recovery and reuse system, mechanism, etc.

For example, the battery ladder is unclear, the battery retirement standard is not clear, the scrap battery is not mature, and the dismantling is not mature. The battery recovery is re-used, and there is no good partism. According to Zhao Xiaoyong, the general manager of Beijing Saidimei Resources Rehabilitage Research Institute Co.

, Ltd. Kong Qingxi, deputy general manager of Tie Tower Energy Co., Ltd.

, said that the lithium-ion battery has an advantage over the conventional lead-acid battery in terms of energy density, cycle life and environmental protection. With the production of dynamic lithium-ion batteries in 2019, a reasonable ladder Utilization is the key to solving the worries of new energy vehicles, and is also an important means to solve the cost of new energy vehicles, and small capacity, distributed base station preparation, regardless of safety or economics, is a power lithium ion. Best scene for battery ladder.

He also pointed out that there are many new energy automobile companies in my country. If the self-establishment of recycling service outlets, it may cause duplicate construction, and recycled dismantling companies and resource comprehensive utilization companies. There are also many corresponding institutions, difficult to coordinate, and need to explore share-sharing joints.

Recycling mode. .