Method for manufacturing energy storage modules, and energy storage modules

The described method addresses misalignment issues in energy storage device manufacturing by pre-welding laminate films to sealing materials and using spacers for uniform pressure, ensuring reliable welding and alignment in the manufacturing process.

JP7888448B2Active Publication Date: 2026-07-13TOYOTA INDUSTRIES CORP +1
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Patent Information

Application Number
JP2022203132
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-12-20
Publication Date
2026-07-13
Estimated Expiration
2042-12-20

AI Technical Summary

Technical Problem

The existing method for manufacturing energy storage devices faces challenges in ensuring reliable welding of laminate films due to misalignment of energy storage cells, leading to non-uniform surface pressure and potential misalignment during the lamination process.

Method used

A manufacturing method involving the formation of frame-shaped sealing materials on electrode units, with a laminate film pre-welded to the sealing material before lamination, and the use of spacers to maintain alignment, allowing for uniform pressure application and detection of misalignment through notches in the laminate film.

Benefits of technology

Ensures reliable welding of laminate films by applying uniform surface pressure and allows for precise alignment of electrode units, thereby improving the manufacturing process of energy storage modules.

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Patent Text Reader

Abstract

To provide a manufacturing method of a power storage module, capable of reliably welding a laminated film, and a power storage module.SOLUTION: A manufacturing method of a power storage module includes: a step S101 of providing a seal material 21 to a current collector 15 of a bipolar electrode 11 to fabricate a plurality of first electrode units A1; a step S102 of providing a seal material 21 to a current collector 15 of the positive terminal electrode 12 and welding a laminated film 30 onto the seal material 21 to fabricate a second electrode unit A2; and a step S104 of laminating a plurality of the first electrode units A1 and laminating the second electrode unit A2 onto the first electrode unit A1 on the outermost layer. In the step S104, the second electrode unit A2 is laminated such that the laminated film 30 faces the outside of a laminate comprising the first electrode units A1 and the second electrode unit A2.SELECTED DRAWING: Figure 4
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Citation Information

Patent Citations

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    JP2019079613A

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