How much do you know about structural sealant for new energy vehicle power battery?

Structural sealant in the power battery of new energy vehicles is a key material, which is mainly used in the connection part of the power battery and plays the role of sealing and fixing. Therefore, choosing the right structural sealant is crucial in terms of the performance and lifetime of the power cell. In this paper, we will discuss the importance of this material in the field of new energy vehicle batteries from an in-depth analysis of the performance, application and production technology of power cell structural sealant.

First, the basic performance requirements of power battery structural sealant in the field of new energy vehicle power battery.

High temperature resistance: The temperature of the power battery in working condition is high, so the structural sealant needs to have high temperature resistance and be able to withstand long working hours under high temperature.

Aging resistance: under long-term use, structural sealant should not appear aging phenomenon, need to have a certain anti-aging ability to ensure service life.

Good adhesive performance: The adhesive of structural sealant needs to be strong enough to fix the battery components and bear certain load.

Good expansion property: The volume of the power cell is changed by the temperature change during charging and discharging, so it is necessary to choose a structural sealant with good expansion property.

Excellent corrosion resistance: The electrolyte and gas in the power cell will form a certain corrosive effect on the structural sealant, therefore, the structural sealant needs to have sufficient corrosion resistance.

Safety and reliability: structural sealant must comply with national regulatory standards in the selection process, and the safety of the material and environmental protection are also very important.

Secondly, the current application of structural sealant in the new energy vehicle power battery.

In power battery, structural sealant is usually used in the contact surface between the terminals of battery module, between module and module, etc. The bonding between the cover pieces can improve the water and dust resistance of the power battery, prevent the influence of the external environment on the battery, rapidly improve the bearing capacity of the entire power battery, improve the mechanical stability of the battery module and other advantages. According to the market survey, in the field of new energy vehicles, structural sealant occupies a high market share, and the number of its applications is increasing, which puts forward higher requirements on the performance and quality of the material, making the development and manufacturing of the material and quality management continuously improved and perfected.

After Z, the current technical status and development trend of power battery sealant production.

Since structural sealants are extremely widely used, the development and improvement of fabrication technology has been an important research direction in this field. Under the existing technology, manufacturers have developed a variety of technologies for manufacturing structural sealants, such as conventional injection molding technology, liquid film flow extension technology, rotational injection molding technology, and injection molding technology. In addition, research on the development of new structural sealants by means of nanotechnology, photopolymerization and electron beam is also gaining attention. The current development trend is mainly reflected in technological innovation and environmental protection, making good use of technology to automate the development and manufacturing of materials and improve quality, while focusing on the environment and social contribution.

All in all, structural sealant for new energy vehicle power battery is a widely used, extensive and important technology field, which has a pivotal role in the performance and life of new energy vehicle battery. Therefore, in the future development trend, we need to continuously strengthen the research and development in this field, improve the quality of materials and manufacturing processes, and provide a solid guarantee for the development of new energy vehicle batteries.