# US 2014/0154556 A1 · Battery module

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- Number: US 2014/0154556 A1
- Document ID: US20140154556A1
- Status: Published application
- Kind: A1
- Application number: 14/232,823
- Filed: 2012-05-29
- Published: 2014-06-05
- Earliest claimed: 2011-07-15
- Assignees: NEC Energy Devices, Ltd.
- Inventors: Toru Suzuki
- Web page: https://patentgrep.com/patent/US20140154556A1

## CPC

- H01M 10/6555: arranged between the cells
- H01M 50/211: adapted for pouch cells
- H01M 50/505: comprising a single busbar
- H01M 50/51: Connection only in series
- H01M 50/224: Metals
- H01M 50/227: Organic material
- H01M 50/244: Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
- H01M 50/284: with incorporated circuit boards, e.g. printed circuit boards [PCB]
- H01M 50/517: by fixing means, e.g. screws, rivets or bolts
- H01M 50/522: Inorganic material
- H01M 50/55: on the same side of the cell
- H01M 50/557: Plate-shaped terminals
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

To provide a large-capacity battery module that easily can ensure a high level of flame retardancy, a battery module of the present invention includes: an assembled battery in which a plurality of sheet-like unit batteries are stacked; a flat-plate base that includes a front surface and a back surface as two main surfaces; and a peripheral partition wall section (211) that is erected and provided in a peripheral section of the front or back surface from the base, and is formed on both the front and back surfaces, wherein, in a region formed by the base and the peripheral partition wall section (211), at least the one assembled battery is housed.

## Claims

### Claim 1

A battery module, comprising:
an assembled battery in which a plurality of sheet-like unit batteries are stacked;
a flat-plate base that includes a front surface and a back surface as two main surfaces; and
a peripheral partition wall section that is erected and provided in a peripheral section of the front or back surface from the base, and is formed on both the front and back surfaces, wherein,
in a region formed by the base and the peripheral partition wall section, at least the one assembled battery is housed.

### Claim 2 (depends on 1)

The battery module according to claim 1, wherein
the assembled battery is formed by connecting the plurality of sheet-like unit batteries stacked in parallel.

### Claim 3 (depends on 1)

The battery module according to claim 1, wherein
the assembled battery is housed in each of the regions provided on the front surface and the back surface.

### Claim 4 (depends on 3)

The battery module according to claim 3, comprising
a bus bar through which the plurality of assembled batteries are connected in series.

### Claim 5 (depends on 4)

The battery module according to claim 4, comprising
a bus bar that connects at least one assembled battery that is provided on the front surface's side of the base to at least one assembled battery that is provided on the back surface of the base.

### Claim 6 (depends on 5)

The battery module according to claim 5, comprising
a protruding guide member that is provided on two side faces that are different from the front and back surfaces and face each other, in such a way as to extend along a planar direction of the front or back surface.

### Claim 7 (depends on 6)

The battery module according to claim 6, wherein
the protruding guide member is so provided as to protrude from the peripheral partition wall section or to extend from the base; and a tapered section is so provided that a protruding amount of the protruding, or an extending amount of the extending, varies.

### Claim 8 (depends on 7)

The battery module according to claim 7, wherein
a width of the protruding guide member provided on one of the two side faces is different from a width of the protruding guide member provided on the other side face in a direction perpendicular to the front or back surface.