Assembled battery

Patent metadata

Field	Value
Publication number	US-9819047-B2
Application number	US-201615317712-A
Country	US
Kind code	B2
Filing date	Apr 13, 2016
Priority date	Apr 16, 2015
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

In a state where battery cells ( 2 ) are sandwiched from both ends by a pair of end plates ( 3 ) comprising a plurality of plates, the pair of end plates ( 3 ) are secured by metal bands ( 4 ). The end plates ( 3 ) are secured by bolts to a base, at the inside end of the plates as seen from the battery cells ( 2 ). Then, elongation of the assembled battery ( 1 ) can be kept to a small range, even when the battery cells ( 2 ) are swollen.

First claim

The invention claimed is:

1. An assembled battery comprising:
a plurality of battery cells arranged in series;
a pair of end plates sandwiching both ends thereof; and
first metal bands binding the pair of the end plates,
wherein each of the pair of the end plates comprises a plurality of small plates with a space between the plurality of small plates at the respective end,
the first metal bands respectively bind one end small plates of the small plates at one end and the other end small plates of the small plates at the other end, which faces the one end small plates at the one end through the plurality of the battery cells, and
a connecting member on the outer surface of the plurality of small plates extends over the space and connects the plurality of small plates.

2. The assembled battery according to claim 1 ,
wherein inside end parts of the one end small plates and inside end parts of the other end small plates are connected by the first metal bands respectively.

3. The assembled battery according to claim 1 ,
wherein the one end small plates and the other end small plates have the same shape.

4. The assembled battery according to claim 1 ,
wherein the connecting member is removably attached.

5. The assembled battery according to claim 1 ,
wherein each of the one end small plates at one end and each of the other end small plates at the other end corresponding thereto are bound by at least one second metal band in a stacked direction of the plurality of the battery cells at a side surface of a surface where the first metal bands are disposed.

6. The assembled battery according to claim 5 , wherein the at least one second metal band includes a plurality of members.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Ejima Tsuneyuki

Classifications

• H01M10/0587

  of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators · CPC title

• H01M10/0481 Primary

  Compression means other than compression means for stacks of electrodes and separators · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/0431

  Cells with wound or folded electrodes (H01M10/045 takes precedence) · CPC title

• H01M50/209

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