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Solid-state battery

A solid battery and battery technology, applied to solid electrolytes, batteries with solid electrolytes, lithium batteries, etc., can solve problems such as electrolyte leakage, and achieve the effect of improving joint strength

Pending Publication Date: 2022-05-27
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in a secondary battery using an electrolyte solution, there are problems such as leakage of the electrolyte solution.

Method used

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Embodiment Construction

[0026] Next, the "solid-state battery" of the present invention will be described in detail. It will be described with reference to the drawings as necessary, but the contents of the drawings are only schematically and exemplarily shown for understanding the present invention, and the appearance, size ratio, etc. may be different from the actual ones.

[0027] The "solid-state battery" used in the present invention refers to a battery whose constituent elements are solid in a broad sense, and an all-solid-state battery whose battery constituent elements (especially preferably all of the battery constituent elements) are made of a solid in a narrow sense. In a preferred embodiment, the solid-state battery in the present invention is a stacked-type solid-state battery in which the layers constituting the battery constituent unit are stacked on each other, and it is preferable that the layers are formed of a sintered body. In addition, a "solid-state battery" includes not only a ...

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Abstract

In one embodiment of the present invention, a solid-state battery is provided. This solid-state battery is characterized by being provided with: a battery element provided with one or more battery constituent units, each of which is provided with a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, in the lamination direction; external terminals, which are respectively connected with the lead-out parts of the positive electrode layer and the negative electrode layer, and are exposed in order to enable the external part to be electrically connected with the battery element; and a protective layer that covers the surface of the battery element such that each of the lead-out portions and each of the external terminals can be joined, the battery element having a buffer portion provided so as to surround at least one of the positive electrode layer and the negative electrode layer in a plan view. In the buffer part, at least a partial portion between the lead-out part forming side surface of the electrode layer and the external terminal is made of substantially the same resin-free insulating material as the protective layer.

Description

technical field [0001] The present invention relates to a solid state battery. Background technique [0002] Conventionally, secondary batteries that can be repeatedly charged and discharged have been used in various applications. For example, secondary batteries are used as power sources for electronic devices such as smartphones and notebook computers. [0003] In this secondary battery, a liquid electrolyte (electrolytic solution) such as an organic solvent is used as a medium for moving ions. However, in a secondary battery using an electrolytic solution, there are problems such as leakage of the electrolytic solution. Therefore, solid-state batteries having solid electrolytes instead of liquid electrolytes are being developed. [0004] prior art literature [0005] Patent Literature [0006] Patent Document 1: International Publication No. 2018123319 SUMMARY OF THE INVENTION [0007] The solid-state battery includes a battery element, an external terminal on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/056H01M10/0565H01M50/543
CPCH01M10/056H01M10/0565H01M50/543H01M10/0562H01M2300/0071Y02E60/10H01M50/434H01M50/437H01M50/117H01M50/141H01M50/545Y02P70/50H01M10/0525H01M2300/0068
Inventor 近川修
Owner MURATA MFG CO LTD
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