Assembled Battery

Patent metadata

Field	Value
Publication number	US-2022158147-A2
Application number	US-201916968462-A
Country	US
Kind code	A2
Filing date	Feb 14, 2019
Priority date	Feb 15, 2018
Publication date	May 19, 2022
Grant date	—

Abstract

Provided is an assembled battery in which a large number of flat batteries can be stacked easily. An assembled battery 1 includes stacked multiple flat batteries A, B, and C in the shape of an N-sided polygon (N is an integer of 3 or more). Each of the multiple flat batteries A, B, and C in the shape of the N-sided polygon has a positive-electrode terminal 21a and a negative-electrode terminal 61a that extend in different directions having 360°/N in between, and the multiple flat batteries A, B, and C are electrically connected in series. The assembled battery 1 also includes multiple N-sided polygonal separating films 71 and 72 disposed between each pair of adjacent ones of the stacked multiple flat batteries A, B, and C to insulate the flat batteries from one another.

First claim

1 . An assembled battery comprising
stacked N flat batteries, N being an integer of 3 or more, wherein each of the flat batteries has a positive-electrode terminal and a negative-electrode terminal having an angle of 360°/N in between, and the N flat batteries are electrically connected in series.

2 . The assembled battery according to claim 1 , wherein
the flat battery is N-sided polygonal, and the positive-electrode terminal and the negative-electrode terminal extend from different sides of the flat battery.

3 . The assembled battery according to claim 1 , comprising
separating films each disposed between each pair of adjacent ones of the N flat batteries to separate the pair of adjacent flat batteries.

4 . The assembled battery according to claim 3 , wherein
one of the separating films has an insulating portion that is associated with a positive-electrode terminal of one flat battery of the stacked assembled battery, that has a width larger than the width of the positive-electrode terminal, and that extends outward.

5 . The assembled battery according to claim 1 , wherein
a positive electrode and a negative electrode of each flat battery has a planar shape of a regular N-sided polygon.

6 . The assembled battery according to claim 3 , comprising
an exterior film, wherein the exterior film and the separating films have a hole.

7 . The assembled battery according to claim 6 , comprising
a sealing seal that covers the hole of the exterior film, wherein when the sealing seal is peeled off, air flows in through the hole, and the assembled battery starts electrical discharge.

8 . The assembled battery according to claim 6 , wherein
when an electrolytic solution or a solvent is put in through the hole, the assembled battery starts electrical discharge.

Assignees

• Nippon Telegraph & Telephone

Inventors

• Nohara Masaya
• Iwata Mikayo
• Hayashi Masahiko
• Komatsu Takeshi

Classifications

• H01M50/50 Primary

  Current conducting connections for cells or batteries · CPC title

• H01M50/588

  outside the batteries, e.g. incorrect connections of terminals or busbars · CPC title

• H01M50/291

  characterised by their shape · CPC title

• H01M50/548

  on opposite sides of the cell · CPC title

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title