NiMH No.7 battery.Electromagnetic shielding technology promotes lightweight development of battery packs

　　In the context of lightweighting power batteries, many OEMs or battery manufacturers have begun to consciously change the metal materials of battery packs into non-metallic materials, but problems have also arisen. When materials change from metals to non-metallic materials, some key electronic components such as batteries, battery management systems, etc. will be interfered by external signals. How to block some unnecessary signals has become a problem faced by enterprises now.

　　At the same time, as the energy density of the battery becomes higher, the battery pack becomes more and more heated when the battery is charged and discharged at high rates. How to release the heat quickly and effectively has become a problem that companies must solve.

　　Lu Xingtao, director of new energy vehicle business development of Henkel Asia Pacific, said: "Henkel has some corresponding solutions for the switching of lightweight materials in batteries and the problem of heat generation in batteries and battery management systems."

　　The golden autumn is bringing coolness, the osmanthus is fragrant, and the Gaogong Lithium Battery (2018) International Lithium Battery Key Materials Technology Innovation Summit was grandly opened in Pengcheng Shenzhen today. The summit was hosted by GGII and hosted by Gaogong Lithium Battery, Jiangmen Municipal Bureau of Commerce, and Jiangmen Municipal Economic and Information Technology Bureau. It invited more than 80 industry experts, technical leaders and more than 400 industry insiders from all aspects of lithium battery materials and power battery companies to discuss At this stage, the technological research and development innovation and industrial upgrading of core materials of power batteries will be jointly discussed.

　　In the international lithium battery material industry chain technology preview session, Lu Xingtao, Henkel Asia Pacific New Energy Vehicle Business Development Director, gave a keynote speech on "Using Advanced Adhesive Technology to Improve the Performance and Efficiency of New Energy Vehicles."

　　▲Lu Xingtao, Director of New Energy Vehicle Business Development of Henkel Asia Pacific Region

　　As the battery pack switches from metal to non-metallic materials, it is first necessary to shield its own signals to prevent the signals from interfering with other key components; at the same time, it is also necessary to ensure that external signals do not interfere with battery components.

　　Lu Xingtao said: "In response to the above problems, Henkel has developed electromagnetic shielding technology, which can be directly sprayed on the surface of non-metallic materials, which can effectively shield itself or external electromagnetic radiation interference."

　　It is understood that this technology can be applied to various substrates (such as plastics, reinforced composite materials), has excellent attenuation performance (50 to 70dB), can be cured quickly without heating (5 to 20 minutes), and the spraying process is convenient Application, thin layer can reach 50 to 75μm, low surface resistance <0.5ohms/square), and has excellent anti-aging properties.

　　At the same time, Henkel has also developed relevant technologies to address the heating problem of battery packs.

　　Lu Xingtao said: "The company has developed a variety of solutions for different needs in response to the problem of battery pack heating. The first one is elastic thermal conductive adhesive, which is characterized by its strong resistance to electrolyte and its large compression deformation. Denatured, it can effectively absorb the volume expansion of the battery core during operation, and has stable thermal conductivity. Secondly, Henkel Loctite's thermally conductive adhesive can replace the traditional mechanical structure fixation, meet high-strength mechanical indicators while effectively transmitting battery operation The heat generated in the battery pack ensures the safety of the battery pack. In addition, Henkel's thermal conductive potting technology takes into account good process performance while meeting the thermal conductivity, considering the large differences in thermal expansion coefficients of various base materials in new energy vehicles. , Henkel's thermally conductive potting products have excellent resistance to cold and thermal shock. They can meet the application needs of some key components such as battery management systems, motors, car chargers, etc."

　　In response to the needs of the new energy vehicle industry, Henkel provides a variety of solutions for components and systems of pure electric, gasoline-electric hybrid and fuel cell vehicles. Its key products and technologies include conductive coatings (cells), thermal conductive potting /Thermal bonding, liquid gasketing and sealing, electromagnetic shielding coating, vacuum impregnation, thermal gasket/filler, surface treatment technology, etc.

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