The battery market is in a stage of rapid development and innovation, mainly driven by the demand for electric vehicles (EVs). Electric vehicles have increasingly high requirements for batteries, especially in terms of energy density, lifespan, and charging speed. The advancement of solid-state battery technology has brought new hope for improving the safety and performance of batteries, especially the design of silicon anodes and lithium metal anodes, which can further enhance the performance of batteries.
In this fiercely competitive market, battery manufacturers are facing pressure to improve energy efficiency, reduce costs, and comply with strict regulations. For example, they need to ensure that battery products comply with the highest flame retardant standards (such as UL94V0) and do not contain harmful substances, such as PFAS, which are regulated by the European REACH regulation. With the increasingly fierce competition in the global electric vehicle market, major manufacturers are vying for market share and striving to provide advanced and cost competitive battery solutions.
Square battery.
cylindrical battery, soft pack battery
Sealing can also affect the mechanical stability and thermal management of batteries, which is crucial for maintaining optimal performance under various operating conditions. Therefore, choosing the appropriate sealing method is crucial for ensuring the reliability and safety of battery cells.
The choice of sealing method depends on the specific requirements of the battery application and the ideal balance between performance, cost, and manufacturing complexity.
Lithium battery packaging form
According to the packaging form, lithium batteries can be divided into three forms: square, cylindrical, and soft pack. The packaging form refers to the packaging structure of a single lithium battery, and different packaging forms correspond to different manufacturing processes, as well as different forms of battery precision structural components. At present, the packaging technology route for lithium batteries mainly includes three forms: cylindrical, square, and soft pack. The method of sealing these battery cells is crucial as it directly affects the safety, performance, and lifespan of the battery. Proper sealing can prevent electrolyte leakage, moisture infiltration, and exposure to external pollutants, all of which can lead to catastrophic failures, including fires or explosions.
Adhesive solution for lithium battery pack Sealing scheme for lithium battery pack
Elaplus recommends products
Adhesive recommendation
EP 2013A/B epoxy adhesive is a resin adhesive that solidifies at room temperature/heating. This two-component adhesive is designed for metal bonding, cabin or SMC fiberglass parts bonding, aluminum honeycomb panel splicing, motor magnet tile bonding, ceramic film module sealing, and internal structural adhesive bonding of lithium battery modules. EP 2013A/B epoxy adhesive can cure both at room temperature and in heated environments. After thoroughly mixing component A and component B in a weight ratio of 100:100, a thixotropic and easily stirred fluid is formed, and the product solidifies within a certain period of time, forming protection. The cured adhesive has the following characteristics:
◇ Resist moisture, dirt, and other atmospheric components
◇ Solvent free, no solidification by-products
Excellent resistance to high and low temperatures- 50℃-130℃
◇ Resistant to organic solvents and waterproof
◇ Has good adhesion and peel strength to fiberglass cloth, aluminum and plastic, aluminum and aluminum, steel plates, etc
Recommended sealant
SIPA 8250A/B silicone adhesive is a two-component addition molded room temperature cured silicone rubber that can also be heat cured to form a strong and soft high toughness silicone rubber elastomer. Easy to operate, fast curing by heating, no by-product volatilization during the curing process, minimal volume change, and the cured material has a wide range of temperature resistance, excellent resistance to cold and hot alternation, aging resistance, and electrical insulation performance, as well as good moisture resistance, earthquake resistance, corona resistance, and leakage resistance. ◇ Room temperature curing, electrical insulation
◇ 1:1 mixing ratio
◇ High thermal conductivity
◇ Low viscosity
◇ Low curing shrinkage rate
◇ Heat shock resistance
Tags: Battery cell sealing, battery pack sealant, lithium battery pack packaging
