Two-end-out tab battery convenient for electrolyte filling

By setting the aluminum-plastic film to H shape and convex after packaging, the thermal radiation and adhesion problems during the packaging of existing small cylindrical batteries are solved, convenient liquid injection of electrolyte and smooth entry of the two-seal bayonet, and the reliability of the battery is improved.

CN222690779UActive Publication Date: 2025-03-28HUIZHOU KANGPINLAI TECH CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202421219821.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-31
Publication Date
2025-03-28
Estimated Expiration
2034-05-31

AI Technical Summary

Technical Problem

During the packaging process, the existing small cylindrical batteries are thermal radiation, CPP adhesive and glue blocking due to the rectangular shape of the aluminum-plastic film, which makes it impossible to achieve the opening and injection of the electrolyte. The bayonet of the second sealer is difficult to enter, which easily leads to battery deviation and corrosion.

Method used

The aluminum-plastic film is arranged in an H-shaped shape, and it is convex after folding in half along the center line, leaving enough heat radiation space to prevent the sealing heads of the positive and negative electrodes from being too close to each other, and prevent the CPP of the inner layer of the aluminum-plastic film from being heated and sticking together, thereby facilitating the opening of the electrolyte and the injection of liquid, as well as the entry of the two-seal bayonet.

Benefits of technology

It realizes that a large electrolyte charging port is left after packaging, avoids battery displacement and corrosion, simplifies subsequent processes, and improves the reliability of the battery usage.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model discloses a two-end-out tab battery convenient for electrolyte filling, and relates to the technical field of batteries. The two-end-out tab battery convenient for electrolyte filling comprises a packaging shell and a roll core, the packaging shell is arranged in a convex shape after packaging the roll core, the packaging shell comprises an aluminum-plastic film, roll core placing cavities are integrally formed in the aluminum-plastic film, the aluminum-plastic film is arranged in an H shape after being unfolded, and the two roll core placing cavities are located in the middle of the aluminum-plastic film; the aluminum-plastic film is H-shaped after being unfolded, the width of the two wings is large after the aluminum-plastic film is folded, the packaging area reserves enough heat radiation space for thermal packaging, and it is guaranteed that the aluminum-plastic film is provided with a large filling opening after being packaged; due to the H-shaped arrangement, the tab can normally extend out after the roll core main body is completely wrapped; in addition, enough heat radiation space is reserved during heat packaging; the folded aluminum plastic film is provided with a larger electrolyte filling opening; and meanwhile, the subsequent secondary sealing bayonet can enter conveniently, and the displacement phenomenon is avoided.
Need to check novelty before this filing date? Find Prior Art