Battery block

Patent metadata

Field	Value
Publication number	US-10263229-B2
Application number	US-201515126858-A
Country	US
Kind code	B2
Filing date	Mar 5, 2015
Priority date	Apr 25, 2014
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

Cells are arranged in a predetermined arrangement and are held by holding unit. The holding unit includes a first holding unit, a second holding unit, and a third holding unit. The first holding unit holds cells so as to partially cover the one side of the outer peripheral surfaces of the cells in the longitudinal direction. The second holding unit holds the cells so as to partially cover the other side of the outer peripheral surfaces of the cells in the longitudinal direction. The third holding unit holds the cells so as to cover a region that is covered with neither the first holding unit nor the second holding unit, of the outer peripheral surfaces of the cells in the longitudinal direction.

First claim

The invention claimed is:

1. A battery block comprising:
a plurality of cells; and
a holding unit for holding the plurality of cells so that the plurality of cells are arranged in a predetermined arrangement while positive electrodes of the plurality of cells are aligned to a first side and negative electrodes of the plurality of cells are aligned to a second side,
wherein the holding unit includes:
a first holding unit made of a material having an insulation property, and holding the plurality of cells so as to partially cover the first side of outer peripheral surfaces of the plurality of cells in a longitudinal direction;
a second holding unit made of a material having an insulation property, and holding the plurality of cells so as to partially cover the second side of the outer peripheral surfaces of the plurality of cells in the longitudinal direction; and
a third holding unit made of a material having a heat conductivity, and holding the plurality of cells so as to cover a first region on the outer peripheral surfaces of the plurality of cells in the longitudinal direction, the first region being covered with neither the first holding unit nor the second holding unit,

the first holding unit, the second holding unit, and the third holding unit are divided, and arranged in the longitudinal direction,
the first holding unit has a first engagement portion, and the second holding unit has a second engagement portion which is directly engaged with the first engagement portion,
the first holding unit is coupled to the second holding unit so as to grasp the third holding unit by the first engagement portion being engaged with the second engagement portion,
the third holding unit is dimensioned such that a pair of second regions, other than said first region, on the outer peripheral surfaces of the plurality of cells and extending in opposite directions from each other in the longitudinal direction, is uncovered by the third holding unit,
the third holding unit has storage portions which each have openings at both ends of the longitudinal direction of each of the storage portions, and
the third holding unit is sandwiched between the first holding unit and second holding unit in the longitudinal direction.

2. The battery block according to claim 1 , wherein
a side surface portion of the third holding unit is formed in a wave shape having projecting regions and recessed regions along an outline of side surfaces of the plurality of cells, and
the first engagement portion of the first holding unit is engaged with the second engagement portion of the second holding unit at the recessed regions.

3. The battery block according to claim 2 , wherein
each of the first holding unit and the second holding unit includes storage portions, the storage portions being defined by a plane portion and side-wall portions and storing the plurality of cells, and
each of the side-wall portions includes a rib projecting inward.

4. The battery block according to claim 3 , wherein
the predetermined arrangement employed when the plurality of cells are arranged is a staggered arrangement minimizing a clearance between adjacent cells.

5. The battery block according to claim 4 , wherein
the plane portion includes a plurality of through holes at positions corresponding to positive terminals or negative terminals of the plurality of cells,
the plane portion includes a first surface brought into contact with a positive side or a negative side of the plurality of cells, and a second surface facing the first surface, and
a collection plate is disposed in a region having none of the plurality of through holes on the second surface, wherein the collection plate extends in an extending direction of a column of the plurality of cells arranged in the staggered arrangement, and electrically interconnects the plurality of cells.

6. A battery block comprising:
a plurality of cells; and
a holding unit for holding the plurality of cells so that the plurality of cells are arranged in a predetermined arrangement,
wherein the holding unit includes:
a first holding unit made of a material having an insulation property, and holding the plurality of cells so as to partially cover a first side of outer peripheral surfaces of the plurality of cells in a longitudinal direction;
a second holding unit made of a material having an insulation property, and holding the plurality of cells so as to partially cover a second side of the outer peripheral surfaces of the plurality of cells in the longitudinal direction; and
a third holding unit made of a material having a heat conductivity, and holding the plurality of cells so as to cover a first region on the outer peripheral surfaces of the plurality of cells in the longitudinal direction, the first region being covered with neither the first holding unit nor the second holding unit,

the first holding unit, the second holding unit, and the third holding unit are divided, and arranged in the longitudinal direction,
the first holding unit has a first engagement portion, and the second holding unit has a second engagement portion which is directly engaged with the first engagement portion,
the first holding unit is coupled to the second holding unit so as to grasp the third holding unit by the first engagement portion being engaged with the second engagement portion,
the third holding unit is dimensioned such that a pair of second regions, other than said first region, on the outer peripheral surfaces of the plurality of cells and extending in opposite directions from each other in the longitudinal direction, is uncovered by the third holding unit,
the third holding unit has storage portions which each have openings at both ends of the longitudinal direction of each of the storage portions, and
the third holding unit is sandwiched between the first holding unit and second holding unit in the longitudinal direction.

7. The battery block according to claim 6 , wherein
a side surface portion of the third holding unit is formed in a wave shape having projecting regions and recessed regions along an outline of side surfaces of the plurality of cells, and
the first engagement portion of the first holding unit is engaged with the second engagement portion of the second holding unit at the recessed regions.

8. The battery block according to claim 7 , wherein
each of the first holding unit and the second holding unit includes storage portions, the storage portions being defined by a plane portion and side-wall portions and storing the plurality of cells, and
each of the side-wall portions includes a rib projecting inward.

9. The battery block according to claim 8 , wherein
the predetermined arrangement employed when the plurality of cells are arranged is a staggered arrangement minimizing a clearance between adjacent cells.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Motokawa Shinya
• Kishii Daisuke
• Shimizu Keisuke
• Takano Akira

Classifications

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• H01M50/289

  characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471) · CPC title

• H01M50/213

  adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) · CPC title

• H01M10/6551

  Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings · CPC title

• H01M10/617

  for achieving uniformity or desired distribution of temperature · CPC title