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Cylindrical solid-state battery and method for manufacturing same

A solid-state battery, manufacturing method technology, applied in secondary batteries, circuits, electrical components, etc.

Pending Publication Date: 2022-07-29
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the conventional winding-type cylindrical solid battery has a structure in which the winding group is inserted into an outer packaging container such as an outer packaging can, so there is a gap between the winding group and the outer packaging can.
Therefore, it is difficult to apply pressure to constrain
In this regard, a technology of sealing the winding group and the outer packaging can is disclosed (see Patent Document 1), but the outer packaging container is still used, and the pressure is required to be more easily restrained.

Method used

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  • Cylindrical solid-state battery and method for manufacturing same
  • Cylindrical solid-state battery and method for manufacturing same
  • Cylindrical solid-state battery and method for manufacturing same

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Embodiment Construction

[0039] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The content of the present invention is not limited to the description of the following embodiments. In addition, in the following embodiment, although the lithium ion battery of a solid state battery is demonstrated as an example, it can be applied to a solid state battery other than a lithium ion battery.

[0040]

[0041] like figure 1 As shown, this embodiment of figure 1 The cylindrical solid-state battery 100 is a wound-type lithium ion secondary battery, and is composed of a cylindrical winding group 110, a negative electrode cover member 140 and a positive electrode cover member 150 electrically bonded to the upper surface and the bottom surface of the winding group 110, respectively. constitute. The winding group 110 is composed of a sheet-like electrode laminate 120 wound around a core material (not shown) and wound, and an outer wrapping material 130 wou...

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Abstract

The problem to be solved by the present invention is to improve the adhesion between a solid electrolyte layer and an electrode and prevent a decrease in ion conductivity even in a cylindrical solid-state battery provided with a wound wire. In order to solve the problem, provided is a cylindrical solid-state battery provided with a winding group in which a sheet-like electrode laminate in which a positive electrode and a negative electrode are laminated with a solid electrolyte layer interposed therebetween is wound, in which a sheet-like outer covering material is bonded or extended to the outer peripheral end of the electrode laminate, and the outer covering material is bonded or extended to the outer peripheral end of the electrode laminate. The outer packaging material is continuously wound from the electrode laminated body, and the end part of the outer packaging material is fixed, so that the outermost periphery of the cylindrical solid-state battery is formed.

Description

technical field [0001] The present invention relates to a winding-type cylindrical solid-state battery and a manufacturing method thereof. Background technique [0002] A wound-type cylindrical solid-state battery includes a wound group formed by winding a sheet-like electrode laminate in which a positive electrode and a negative electrode are laminated with a solid electrolyte layer interposed therebetween, and the wound-type cylindrical The solid state battery has a structure in which current collectors extending from the positive and negative electrodes, respectively, are collected by lids on the upper and lower sides of a cylindrical wound group. [0003] In an all-solid-state battery such as a lithium ion battery, a positive electrode and a negative electrode are laminated via a solid electrolyte layer, and ion conduction of lithium ions or the like is performed via the solid electrolyte layer. Therefore, when the adhesiveness between the solid electrolyte layer and bo...

Claims

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Application Information

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IPC IPC(8): H01M10/0587H01M10/0525
CPCH01M10/0587H01M10/0525
Inventor 有贺稔之谷内拓哉大田正弘
Owner HONDA MOTOR CO LTD
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