How to solve the problem of EV battery thermal management?

The thermal management of the battery module is very important to the safety and service life of the battery pack. In the driving and charging process of electric vehicles, how to make the battery control the optimal temperature of about 25°C and exert its best performance and safety, the thermal management materials of the module and PACK link are 'indispensable'. At the 2021 my country International Battery Technology Exhibition (CIBF), DuPont presented the latest BETATECH™ polyurethane thermal interface material to the public for the first time. The material can maintain viscosity and thermal conductivity in a large operating temperature range, enhance heat dissipation and prevent thermal runaway, and can be used to bond key components such as battery pack modules and cooling plates. Gaogong Li Battery understands that BETATECH™ polyurethane thermal interface materials are available in one-component or two-component products, which are used between battery modules and liquid cold plates. Its ease of use improves production efficiency and realizes repeatable process operations in a high-volume assembly environment. Compared with other materials currently on the market, the important advantages of DuPont BETATECH™ polyurethane thermal interface materials are embodied in the following aspects: formulation: non-abrasive formulations will not cause wear on the equipment; gluing: flexible methods, compatible with pressing and injection at the same time Two major processes; fast bonding: low module press-in force to maintain thermal conductivity: good adhesion between the battery core and the cooling plate without gaps, and no sagging in the vertical aging test; operating time: reserve up to 60 minutes ; Reliability: no physical changes during the aging process; no sagging in the vertical aging test; maintainability: due to the small pull-out force of the module, repeated operations can be achieved. At present, important OEM manufacturers are also conducting laboratory tests and prototype tests on BETATECH™ polyurethane thermal interface materials. Using racing cars as the entry point for the electrification of road vehicles. As automakers and OEMs shift their focus from traditional internal combustion engines to pure electric vehicle components and systems, starting from battery thermal management materials, it is just a small step in leading the reform of the automotive industry by DuPont. . This international company that once invented materials such as nylon to change the world has already eagerly deployed and developed a series of key technologies and applications around electrification and intelligence. As early as March 2019, DuPont reached a strategic cooperation with the AlpineF1 Team (formerly Renault F1 Team) to improve the performance of F1 cars and accelerate the migration of related technologies from racing cars to road cars. Gaogong Lithium was informed that through cooperation with the AlpineF1 team, DuPont aims to solve the core pain points in the development process of hybrid and pure electric vehicles such as cruising range, safety, durability and economic benefits. Its key supply includes batteries and battery assembly, thermal Solutions for management, power electronics and electric motors, chassis lightweight and durability. In addition to cooperating with the AlpineF1 team, DuPont established a technical partnership with the Nissan e.dams Formula Electric (FE) team in February this year, focusing on improving motor performance and battery safety breakthroughs. Racing cars have always been at the forefront of technological innovation. Any innovation and technological progress in this field will directly benefit the entire automotive industry, making it a true 'laboratory on wheels.' This is the logic behind DuPont's choice to migrate from racing cars to road cars. In fact, in the field of traditional fuel vehicles, DuPont has already experienced the 'bonus' brought by the migration of technology and products from racing to road vehicles. In 1977, turbocharged racing cars appeared on the F1 circuit for the first time. Since then, the technology has been widely used in road vehicles, and DuPont engineering plastics have played a key role in turbocharging system components. It not only provides products with the ability to withstand high temperature and corrosion resistance chemicals and liquids, but also improves product design flexibility and processing performance. Nowadays, under the wave of electrification, DuPont also hopes to accelerate the application of new materials to the commercial electric vehicle field by using the harsh environment of the Formula E circuit to test materials. The Global Center of Excellence (COE) responds to changes in industrial electrification. In addition to in-depth cooperation with automakers such as Alpine and Nissan, DuPont is also increasing its internal Ru0026D and technology investment. Gaogong Lithium was informed that in order to accelerate the transformation and deployment in the field of electrification, DuPont is establishing a global center of excellence (COE) for automotive electrification, which will focus on three key areas and be equipped with specialized personnel and equipment to accelerate new technologies Application and development: Battery safety technology centers located in Shanghai and Geneva: The goal is to help customers meet safety requirements, while increasing energy density, extending battery fast charging life and optimizing costs. Thermal management technology centers in Geneva and Freinbach, Switzerland: The goal is to improve fast charging speed and performance in cold weather while maintaining battery reliability while controlling costs. The Electric Powertrain Efficiency Technology Center in Geneva: The goal is to improve the efficiency and energy density/filling density of power electronics and electric motors, while maintaining high reliability. The automobile industry is undergoing tremendous changes and transformations, and the global value chain has also undergone disruptive changes. The close cooperation of all links in the entire value chain has become particularly important. In the next few years, DuPont will jointly promote the development of automotive electrification through internal capabilities and external strategic cooperation.