Energy Storage Devices

By adopting the open design of both ends of the shell and extrusion tensile production method, combined with the structural design of welding connections, the problems of complex assembly and high cost of existing energy storage devices are solved, and efficient production, low internal resistance and long-life energy storage devices are achieved.

CN109786133BActive Publication Date: 2025-03-25JINAN SHENGQUAN GRP SHARE HLDG CO LTD
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Patent Information

Application Number
CN201711116609.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2017-11-13
Publication Date
2025-03-25
Estimated Expiration
2037-11-13

AI Technical Summary

Technical Problem

The packaging structure of existing energy storage devices is complex in the assembly process, has high production and processing costs, and is prone to poor product quality, affecting the performance and service life of energy storage devices.

Method used

The two-end opening design of the shell is used to produce the shell through extrusion and stretching, simplifying the assembly process, reducing precision requirements for parts, and connecting the positive electrode lead structure, negative cap and shell through welding, achieving reliable fixing and low internal resistance conductive connection.

Benefits of technology

It improves the production efficiency of energy storage devices, reduces processing costs, simplifies the assembly process, enhances the reliability and service life of the product, and reduces internal resistance.

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Abstract

The present invention discloses an energy storage device, wherein a first through hole is provided at the end of a shell of the energy storage device, and a positive electrode lead-out structure, a core body and a negative electrode cover are sleeved in the first through hole in sequence from the lower end of the shell; the positive electrode lead-out structure comprises a current collector and a lead-out cover as a positive electrode, the outer edge gap of the current collector is inserted in the first through hole, the lead-out cover gap is inserted in the blind hole of the current collector, and the end of the current collector, the end of the lead-out cover and the end of the shell are welded and connected at one time; the negative electrode lead-out structure comprises a current collector, a pole as a negative pole and a transfer pole provided between the current collector and the pole, a third through hole for gap matching with the pole is provided on the transfer pole, the current collector is welded and connected to the lower end of the transfer pole, and the transfer pole is welded and connected to the pole at the upper end of the third through hole. The present invention can not only ensure its reliable stability and service life, but also improve its production efficiency and reduce processing costs.
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