Plastic for energy storage battery and battery

By using a combination of modified polyphenylene sulfide, auxiliary materials and compatibilizer in the plastic on the top cover of the energy storage battery, the sealing problem caused by insufficient strength is solved, the battery performance and stability are improved, and the battery liquid leakage is avoided risk.

CN119220096APending Publication Date: 2024-12-31ZHEJIANG JINKO ENERGY STORAGE CO LTD
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Patent Information

Application Number
CN202411217238.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-08-30
Publication Date
2024-12-31

AI Technical Summary

Technical Problem

Due to insufficient strength of the plastic on the roof of the existing energy storage battery, it cannot be fixed and sealed during long-term use, affecting the battery performance and increasing the risk of unstable charging and discharge and battery leakage.

Method used

Using a combination of modified polyphenylene sulfide, auxiliary materials and compatibilizers, by grafting different functional groups on the polyphenylene sulfide and introducing glass fibers, chopped carbon fibers, silica and other auxiliary materials, and using compatibilizers such as rings Oxygen resin, PE-g-ST, etc. improve the mechanical strength and compatibility of the materials, enhance interface bonding, and form high-performance upper plastic.

Benefits of technology

It significantly improves the mechanical strength, deformation resistance and heat resistance of the plastic, ensures the sealing stability and performance of the battery, and avoids the failure of the battery module and energy storage system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN119220096A_ABST
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Abstract

The invention provides plastic for an energy storage battery and the battery. The plastic for the energy storage battery comprises modified polyphenylene sulfide, an auxiliary material and a compatibilizer. The main component of the plastic is modified polyphenylene sulfide, and functional groups including but not limited to methyl, ethyl, trifluoromethyl, methoxyl and the like are introduced to the polyphenylene sulfide to modify the polyphenylene sulfide, so that the strength and thermal stability of the material are improved. The auxiliary material is introduced during plastic synthesis on the battery end cover, so that the strength and the mechanical property of the product are improved while the main material is ensured to play a role. And a compatibilizer is introduced during material synthesis, so that the compatibility between blend components of the modified polyphenylene sulfide and the auxiliary material is effectively improved, the interface bonding between the modified polyphenylene sulfide and the auxiliary material is enhanced, the strength of the material is further improved, and the problems that the sealing effect cannot be achieved due to insufficient strength in the using process of the upper plastic and the battery performance is influenced are solved. The invention also provides a battery. The upper plastic of the battery end cover is prepared from the plastic provided by the invention.
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