CN-122000485-A - All-solid-state battery and vehicle

Abstract

The invention provides an all-solid-state battery and a vehicle, which can reduce the possibility of damage caused by external force when the battery is mounted on the vehicle such as an electric automobile. The all-solid-state battery includes a plurality of cells including a plurality of electrode bodies each having a plate-shaped positive electrode, a plate-shaped negative electrode, and a solid electrolyte layer formed between the positive electrode and the negative electrode, the plurality of electrode bodies being integrated by a coating agent into a single body in a state in which linear edges are aligned, and positions of end faces of the coating agent in a direction perpendicular to a plane including the plurality of edges being aligned.

Inventors

• TAGUCHI AKIHIRO
• YAMAMOTO YOSHIYUKI
• ASAHI
• MATSUMOTO KAZUYA
• Waiyuan Changhong
• Tanehara Kenji
• NAKAZAWA FUMIKAZU

Assignees

• 本田技研工业株式会社

Dates

Publication Date

20260508

Application Date

20251031

Priority Date

20241105

Claims (6)

1. 1. An all-solid battery comprising a plurality of cells, wherein the plurality of cells comprise a plurality of electrode bodies each having a plate-like positive electrode, a plate-like negative electrode, and a solid electrolyte layer formed between the positive electrode and the negative electrode, wherein the plurality of electrode bodies are integrated by a coating agent into a single body in a state in which linear edges are aligned, and positions of end faces of the coating agent in a direction perpendicular to a plane including the plurality of edges are aligned.
2. 2. The all-solid battery according to claim 1, wherein the coating agent and the plurality of electrode bodies are covered with an exterior package formed by lamination processing.
3. 3. The all-solid battery according to claim 1, wherein the all-solid battery further comprises: A buffer member interposed between the monomers; An end plate sandwiching the single body and the buffer in a direction perpendicular to the widest surface of the positive electrode, the negative electrode, or the solid electrolyte layer, and And a constraining bar that sandwiches the plurality of cells in a direction parallel to the widest surface of the positive electrode, the negative electrode, or the solid electrolyte layer.
4. 4. The all-solid battery according to claim 1, wherein the coating agent is an acrylic resin or an epoxy resin.
5. 5. The all-solid battery according to claim 1, wherein the young's modulus of the coating agent after curing is 40MPa or less at a temperature of 0 ℃ or more and 40 ℃ or less.
6. 6. A vehicle in which the all-solid battery according to any one of claims 1 to 5 is mounted with the end face facing the road surface side.

Description

All-solid-state battery and vehicle Technical Field The present invention relates to an all-solid-state battery and a vehicle. Background In recent years, research and development of secondary batteries that contribute to energy efficiency have been conducted in order to ensure that more people can properly use reliable, sustainable, and advanced energy. Secondary batteries are indispensable for vehicles such as electric automobiles. As a document disclosing a technique related to a secondary battery, patent document 1, for example, is cited. The secondary battery manufactured by the manufacturing apparatus disclosed in patent document 1 is manufactured by arranging fuel cell units in a state of being suspended from an alignment rail. Prior art literature Patent literature Patent document 1 Japanese patent publication No. 2016-157520 Disclosure of Invention However, in the secondary battery manufactured by the manufacturing apparatus disclosed in patent document 1, when there is a deviation in the size of each portion of the fuel cell unit, there is a case where the edges of each portion become misaligned. In such a case, external force is concentrated on the edge protruding from the other edge, and the secondary battery may be damaged. In addition, when the secondary battery is mounted on a vehicle such as an electric car, external force may be applied due to a curb collision or a stone collision caused by a collapse of the vehicle during running. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an all-solid-state battery and a vehicle that can reduce the possibility of breakage due to external force when mounted on a vehicle such as an electric vehicle. Moreover, the present invention further contributes to improvement of safety. Technical scheme for solving technical problems In order to achieve the above object, an all-solid-state battery according to an embodiment of the present invention includes a plurality of cells including a plurality of electrode bodies each having a plate-shaped positive electrode, a plate-shaped negative electrode, and a solid electrolyte layer formed between the positive electrode and the negative electrode, wherein the plurality of electrode bodies are integrated by a coating agent into a single body in a state in which linear edges are aligned, and positions of end faces of the coating agent in a direction perpendicular to a plane including the plurality of edges are aligned. Thus, the all-solid battery according to the embodiment of the present invention can be arranged in a state in which the end face of the coating agent is oriented in a direction in which the frequency of external force caused by collision of a curb, a stone collapsed during running of the vehicle, or the like is high. Therefore, unlike the all-solid-state battery in which the edges of the electrode body or the end faces of the coating agent of the single body are not aligned, the all-solid-state battery according to the embodiment of the present invention can receive external force on the surface, and the possibility of breakage due to external force can be reduced. In addition, the all-solid battery according to the embodiment of the present invention can avoid an increase in manufacturing cost caused by providing other members in order to secure strength against external force. In the all-solid battery according to the embodiment of the present invention, the coating agent and the plurality of electrode bodies are covered with the exterior package formed by lamination processing. Thus, the all-solid battery according to the embodiment of the present invention can suppress movement of the coating agent and the plurality of electrode bodies, align the positions of the end faces of the coating agent, and more reliably maintain the structure of the portion where the external force is not excessively concentrated at the specific portion. The all-solid battery according to an embodiment of the present invention further includes a buffer member interposed between the cells, an end plate sandwiching the cells and the buffer member in a direction perpendicular to the widest surface of the positive electrode, the negative electrode, or the solid electrolyte layer, and a binding bar (bind bar) sandwiching the plurality of cells in a direction parallel to the widest surface of the positive electrode, the negative electrode, or the solid electrolyte layer. Thus, the positions of the end faces of the coating agent of the all-solid battery according to the embodiment of the present invention are aligned, and it is possible to firmly maintain the relationship between the cells while preventing external force from being directly applied to the plurality of cells arranged in a state where the external force is not excessively concentrated on a specific portion. Therefore, the all-solid battery according to the embodiment of the present inven