Battery module, method for manufacturing battery module, and electronic device

Patent metadata

Field	Value
Publication number	US-2025316857-A1
Application number	US-202519241697-A
Country	US
Kind code	A1
Filing date	Jun 18, 2025
Priority date	Apr 13, 2016
Publication date	Oct 9, 2025
Grant date	—

Abstract

A battery module with high impact resistance is provided. A battery module using an elastic body such as rubber for its exterior body covering a battery is provided. A bendable battery module is provided. As the exterior body covering a battery, an elastic body such as rubber is used, and the exterior body is molded in two steps. First, a first portion provided with a depression in which a battery is stored is molded using a first mold. Next, a battery is inserted into the first portion. Subsequently, second molding is performed using a second mold so as to fill an opening of the depression in the first portion, so that a second portion is formed. The second portion serves as a cover for closing the opening of the depression in the first portion. The second portion is formed in contact with part of the electrodes in the battery and part of an end portion of the second exterior body in the battery.

First claim

1 . A battery module comprising:
a first exterior body; and a battery, the first exterior body comprising:
a first portion;
a second portion; and
a space surrounded by the first portion and the second portion,
the battery comprising:
a second exterior body;
a positive electrode;
a negative electrode;
an electrolyte; and
a pair of tabs,
wherein the first exterior body comprises an elastic material, wherein the first portion and the second portion are bonded to each other, wherein the pair of tabs is provided to project from a first end portion of the second exterior body, wherein the second exterior body, a first plate portion, and a second plate portion are provided in the space, wherein the second exterior body is provided between the first plate portion and the second plate portion, wherein part of the first plate portion and part of the second plate portion are fixed to the second exterior body in a vicinity of the fist end portion, and wherein the other part of the first plate portion and the other part of the second plate portion are not fixed to the second exterior body.

2 . The battery module according to claim 1 ,
wherein the other part of the first plate portion and the other part of the second plate portion slide in the space when the first exterior body is bent.

3 . The battery module according to claim 1 ,
wherein an end portion of the first plate portion and an end portion of the second plate portion are each positioned outward from the second exterior body.

4 . The battery module according to claim 1 ,
wherein the first plate portion and the second plate portion have different lengths.

Assignees

• Semiconductor Energy Lab

Inventors

• Tajima Ryota
• Narita Kazuhei
• Yoshizumi Kensuke

Classifications

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M50/244 Primary

  Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method · CPC title

• H01M50/247

  specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers · CPC title

• H01M50/543

  Terminals · CPC title

• H01M50/116

  characterised by the material · CPC title