Angular battery

Patent metadata

Field	Value
Publication number	US-11824210-B2
Application number	US-202117388207-A
Country	US
Kind code	B2
Filing date	Jul 29, 2021
Priority date	Aug 12, 2020
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

The present disclosure provides an angular battery with enhanced protection of an electrode body. The present disclosure provides an angular battery including an electrode body and a battery case that accommodates the electrode body. The battery case is configured of a substantially U-shaped case body that has a rectangular bottom surface and a pair of long side surfaces provided integrally with the bottom surface and facing each other, and a substantially U-shaped lid body having an upper lid facing the bottom surface and a pair of short side surfaces provided integrally with the upper lid and facing each other. The electrode body is attached to the lid body. In the angular battery, the case body and the lid are joined to each other to form a state in which the electrode body is accommodated inside the battery case.

First claim

What is claimed is:

1. An angular battery comprising:
an electrode body in which a positive electrode and a negative electrode are laminated in an insulated state; and
a hexahedral battery case that accommodates the electrode body, wherein
the battery case is made of a metal,
the battery case is configured of
a substantially U-shaped case body that consists only of a rectangular bottom surface and a pair of long side surfaces provided integrally with the bottom surface and having, as one side thereof, a long side of the rectangular bottom surface and facing each other; and
a substantially U-shaped lid body having an upper lid facing the bottom surface and a pair of short side surfaces provided integrally with the upper lid and interposed between the pair of long side surfaces and facing each other;
the lid body is a bent product in which a single flat plate made of a metal is bent to form the lid body;
the case body is a bent product in which a single flat plate made of a metal is bent to form the case body;
the electrode body is attached to the lid body;
the case body and the lid body are joined to each other to form a state in which the electrode body is accommodated inside the battery case.

2. The angular battery according to claim 1 , wherein
the electrode body is accommodated in the battery case so that laminated surfaces formed by laminating the positive electrode and the negative electrode face the short side surfaces of the lid body and do not face the long side surfaces of the case body.

3. The angular battery according to claim 1 , wherein
the case body and the lid body are joined to each other by laser welding.

Assignees

• Prime Planet Energy & Solutions Inc

Inventors

• Shimura Yosuke
• Asadachi Hideki
• Tomita Yuji

Classifications

• H01M50/103 Primary

  prismatic or rectangular (H01M50/109, H01M50/11 take precedence) · CPC title

• H01M50/15 Primary

  for prismatic or rectangular cells (H01M50/153 takes precedence) · CPC title

• H01M50/166 Primary

  characterised by the methods of assembling casings with lids · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M50/557

  Plate-shaped terminals · CPC title