Manufacturing method for energy storage modules
The method addresses groove blockage and non-uniform weight distribution in laminated batteries by defining load ranges and elastic body properties, ensuring uniform pressure application and preventing gaps.
JP2026119898APending Publication Date: 2026-07-21TOYOTA JIDOSHA KK +1
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- TOYOTA JIDOSHA KK
- Filing Date
- 2025-01-08
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
Existing manufacturing methods for laminated batteries face issues with groove blockage in positive electrode plates due to elastic body deformation and non-uniform weight distribution, which can lead to gaps and uneven pressure application.
Method used
A method involving a defined load range and elastic body properties to prevent groove blockage and uniform weight distribution by setting specific compression ratios and thicknesses to match the electrode plate's waviness and groove depth.
Benefits of technology
This method effectively suppresses groove blockage and ensures uniform load distribution, maintaining the functionality and integrity of the laminated battery structure.
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Smart Images
Figure 2026119898000001_ABST
Abstract
The present invention provides a method for manufacturing an energy storage module that can suppress the blockage of the groove portion of the positive electrode plate by the elastic material, while also suppressing uneven distribution of the load from the elastic material to the positive electrode plate. [Solution] The manufacturing method for the energy storage module 10 comprises a lamination step of laminating an inclusion 20 onto a positive electrode plate 11, and a pressing step of pressing the positive electrode plate 11 with the inclusion 20. The pressing step is a step of pressing the positive electrode plate 11 using an inclusion 20 such that the difference between the product of the natural thickness t of the inclusion 20 and the required upper limit compression ratio of the inclusion 20 and the product of the natural thickness t of the inclusion 20 and the required lower limit compression ratio of the inclusion 20 is greater than the magnitude of the waviness of the positive electrode plate 11, and the product of the natural thickness t of the inclusion 20 and the compression ratio of the pressing portion 22 is smaller than the depth d of the groove portion 11a.
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