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

Patent metadata

Field	Value
Publication number	US-11600883-B2
Application number	US-202117179979-A
Country	US
Kind code	B2
Filing date	Feb 19, 2021
Priority date	Apr 13, 2016
Publication date	Mar 7, 2023
Grant date	Mar 7, 2023

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

The invention claimed is:

1. A battery module comprising:
a flexible battery having at least one tab projecting from a first side of the flexible battery;
a first plate and a second plate with the flexible battery provided therebetween; and
a flexible exterior body covering the flexible battery, the first plate, and the second plate,
wherein a first part of the at least one tab projects from the flexible exterior body, and
wherein the flexible battery, a first part of the first plate, and a first part of the second plate are fixed to each other only in a vicinity of the first side of the flexible battery.

2. The battery module according to claim 1 , wherein each of a second part of the first plate and a second part of the second plate is not fixed to the flexible battery.

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

4. The battery module according to claim 1 , wherein the flexible exterior body comprises a first slit into which the first plate fits and a second slit into which the second plate fits.

5. The battery module according to claim 4 , wherein when the flexible exterior body is bent, the first plate slides along the first slit and the second plate slides along the second slit.

6. The battery module according to claim 1 , further comprising a circuit board,
wherein the circuit board comprises terminals electrically connected to the at least one tab.

7. An electronic device to be attached to the battery module according to claim 1 , the electronic device comprising a housing,
wherein the housing comprises a terminal electrically connected to the at least one tab.

8. A battery module comprising:
a flexible battery having at least one tab projecting from a first side of the flexible battery;
a member having a first plate portion and a second plate portion bonded to each other with a bonding portion, the flexible battery provided between the first plate portion and the second plate portion; and
a flexible exterior body covering the flexible battery and the member,
wherein a first part of the at least one tab projects from the flexible exterior body, and
wherein the flexible battery and the bonding portion of the member are fixed to each other only in a vicinity of the first side of the flexible battery.

9. The battery module according to claim 8 , wherein each of the first plate portion and the second plate portion is not fixed to the flexible battery.

10. The battery module according to claim 8 , wherein the first plate portion and the second plate portion have different lengths.

11. The battery module according to claim 8 , wherein the flexible exterior body comprises a first slit into which the first plate portion fits and a second slit into which the second plate portion fits.

12. The battery module according to claim 11 , wherein when the flexible exterior body is bent, the first plate portion slides along the first slit and the second plate portion slides along the second slit.

13. The battery module according to claim 8 , further comprising a circuit board,
wherein the circuit board comprises terminals electrically connected to the at least one tab.

14. An electronic device to be attached to the battery module according to claim 8 , the electronic device comprising a housing,
wherein the housing comprises a terminal electrically connected to the at least one tab.

Assignees

• Semiconductor Energy Lab

Inventors

• Tajima Ryota
• Narita Kazuhei
• Yoshizumi Kensuke

Classifications

• 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

• H01M50/531 Primary

  Electrode connections inside a battery casing · CPC title

• H01M50/116

  characterised by the material · CPC title

• H01M50/548

  on opposite sides of the cell · CPC title