DE-102025139638-A1 - BATTERY AND METHOD FOR ITS MANUFACTURING

Abstract

A battery comprises an electrode laminate, an outer casing that houses the electrode laminate, and a thermally conductive resin element located between the electrode laminate and the outer casing. The length of a surface area of the thermally conductive resin element in contact with the electrode laminate is greater than the length of a surface area of the electrode laminate in contact with the thermally conductive resin element.

Inventors

• Tsuyoshi EHARA

Assignees

• TOYOTA JIDOSHA KABUSHIKI KAISHA

Dates

Publication Date

20260513

Application Date

20250930

Priority Date

20241111

Claims (6)

1. Battery comprising: an electrode laminate; an outer casing that receives the electrode laminate; and a thermally conductive resin element arranged between the electrode laminate and the outer casing, wherein a length of a surface of the thermally conductive resin element in contact with the electrode laminate is greater than a length of a surface of the electrode laminate in contact with the thermally conductive resin element.
2. Battery after Claim 1 , wherein the thermally conductive resin element is arranged such that it covers the surface of the electrode laminate that is in contact with the thermally conductive resin element and a portion of two surfaces of the electrode laminate that are connected to that surface.
3. Battery after Claim 1 , which further comprises a current collector tongue on a surface of the electrode laminate on a short side.
4. Battery after Claim 1 , where the battery is a solid-state battery.
5. Battery after Claim 1 , wherein the outer casing is a can-shaped outer casing.
6. Method for manufacturing the battery according to one of the Claims 1 until 5 , wherein the method comprises joining the electrode laminate and the thermally conductive resin element under pressure.

Description

BACKGROUND OF THE INVENTION 1. Field of the invention The present disclosure relates to a battery and a method for its manufacture. 2. Description of the state of the art A patent application no. 2020-113496, which is not published in Japan ( JP 2020-113496 A The solid-state battery described is an example of a solid-state battery in which an electrode laminate is enclosed in an outer casing and a heat transfer material is arranged in contact with the electrode laminate inside the outer casing. JP 2020-113496 A Disclosing a solid-state battery cell in which an electrode laminate is enclosed in an outer casing. The electrode laminate has a current collector tongue extending from one end of it. The current collector tongue is connected to a terminal extending from one end of the solid-state battery cell. A first heat transfer material is arranged inside the outer casing in contact with the electrode laminate and the outer casing. SUMMARY OF THE INVENTION The state-of-the-art battery, in which the heat transfer material is arranged, has the problem that the position of the electrode laminate changes when the heat transfer material is located inside the outer casing. The present disclosure was made taking into account the above circumstances and aims to provide a battery characterized by excellent suppression of the positional change of an electrode laminate, as well as a method for manufacturing this battery. The following aspects are relevant to solving the aforementioned problem. <1> A battery comprises an electrode laminate, an outer casing that houses the electrode laminate, and a thermally conductive resin element located between the electrode laminate and the outer casing. The length of a surface of the thermally conductive resin element in contact with the electrode laminate is greater than the length of a surface of the electrode laminate in contact with the thermally conductive resin element. <2> In the battery according to <1> the thermally conductive resin element is arranged such that it covers the surface of the electrode laminate that is in contact with the thermally conductive resin element and part of the two surfaces of the electrode laminate that are connected to this surface. <3> The battery according to <1> or <2> further comprises a current collector tongue on a surface of the electrode laminate on a short side. <4> The battery according to one of <1> to <3> is a solid-state battery. <5> In the battery according to one of <1> to <4>, the outer casing is a can-shaped outer casing. <6> A method for manufacturing the battery according to one of <1> to <5> involves joining the electrode laminate and the thermally conductive resin element under pressure. According to the present disclosure, it is possible to provide the battery which is characterized by excellent suppression of the positional deviation of the electrode laminate, as well as the method for manufacturing the battery. BRIEF DESCRIPTION OF THE DRAWINGS Features, advantages and technical and industrial significance of exemplary embodiments of the invention are described below with reference to the accompanying drawings, in which the same symbols denote the same elements, and wherein: 1 a schematic sectional view of a state before bonding an electrode laminate and a thermally conductive resin element under pressure during the manufacture of a battery according to the state of the art; 2 a schematic sectional view showing an example of the battery according to the state of the art; 3 a schematic sectional view of a state prior to the bonding of an electrode laminate and a thermally conductive resin element under pressure during the manufacture of an example of a battery according to the present disclosure; and 4 is a schematic sectional view showing the example of the battery according to the present disclosure. DETAILED DESCRIPTION OF THE EXECUTION FORMS The battery and the method for manufacturing the battery according to the present disclosure are described in detail below with reference to the drawings. Each of the drawings shown below is a schematic representation, and the size and shape of the individual parts are exaggerated for clarity. battery The battery according to the present disclosure comprises an electrode laminate, an outer casing that receives the electrode laminate, and a thermally conductive resin element arranged between the electrode laminate and the outer casing. The length of a surface of the thermally conductive resin element that is in contact with the electrode laminate is greater than the length of a surface of the electrode laminate that is in contact with the thermally conductive resin element. The battery according to the present disclosure is preferably a solid-state battery and more preferably an all-solid-state battery. The solid-state battery can be an all-solid-state battery containing a solid electrolyte between electrodes as the electrolyte, and the solid electrolyte can contain an electrolyte solu