# US 2014/0154539 A1 · Module for securing energy storage cells

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- Number: US 2014/0154539 A1
- Document ID: US20140154539A1
- Status: Published application
- Kind: A1
- Application number: 13/705,219
- Filed: 2012-12-05
- Published: 2014-06-05
- Earliest claimed: 2012-12-05
- Assignees: Caterpillar Inc.
- Applicants: Caterpillar Inc.
- Inventors: Wellington Y. Kwok; Keith E. Dixler; Shane A. Mockbee
- Web page: https://patentgrep.com/patent/US20140154539A1

## CPC

- H01M 10/643: Cylindrical cells
- H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence)
- H01M 50/224: Metals
- H01M 50/244: Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
- H01M 50/264: for cells or batteries, e.g. straps, tie rods or peripheral frames
- H01M 50/289: characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471)
- H01M 10/6555: arranged between the cells
- 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

The disclosure relates to packaging of an energy storage module containing a plurality of storage cells for use in mobile and stationary power generation. The storage cells are pressed into a block of thermally conductive material in order to manage the temperature of the cells. The storage cells are secured between a clamping plate and a chassis. The resulting package is suitable for use in heavy duty applications.

## Claims

### Claim 1

An energy storage module for securing a matrix of storage cells, comprising:
a generally planar chassis;
a plurality of generally cylindrical storage cells having;
a terminal end;
a non-terminal end;
two connection terminals located on said terminal end;
a block of thermally conductive material having an array of generally cylindrical voids configured to accept said storage cells;
a generally planar clamping plate having a matrix of apertures configured to accept said connection terminals; and
wherein said storage cells are securely located between said clamping plate on said terminal end and said chassis on said non-terminal end.

### Claim 2 (depends on 1)

The energy storage module of claim 1 wherein threaded fasteners are configured to provide a clamping force between said clamping plate and said chassis.

### Claim 3 (depends on 1)

The energy storage module of claim 1 wherein the thermally conductive material is a phase change material.

### Claim 4 (depends on 3)

The energy storage module of claim 3 wherein said phase change material incorporates an active cooling loop.

### Claim 5 (depends on 1)

The energy storage module of claim 1 wherein the generally cylindrical storage cells have a vent in said terminal end; and
said matrix of apertures is further configured to reveal said vent.

### Claim 6 (depends on 2)

The energy storage module of claim 2 wherein at least one of the threaded fasteners is inserted through a compression limiter; and
wherein said compression limiter is configured to limit said clamping force to less than a predetermined clamping limit.

### Claim 7 (depends on 1)

The energy storage module of claim 1 wherein a compliant material is secured between the non-terminal end of said storage cell and the floor of said housing.

### Claim 8 (depends on 1)

The energy storage module of claim 1 wherein the clamping plate is made of a non-conductive material.

### Claim 9 (depends on 1)

The energy storage module of claim 1 wherein said clamping plate includes a recess configured to accept the terminal end of said storage cell.

### Claim 10 (depends on 1)

The energy storage module of claim 1 wherein the chassis includes a plurality of dimples, each dimple having;
a concave side; and
a convex side including;
a generally flat center portion shaped to engage the non-terminal end of a single said storage cell;

### Claim 11 (depends on 10)

The energy storage module of claim 10 wherein the diameter of the center portion is smaller than a diameter of the storage cells.

### Claim 12 (depends on 1)

The energy storage module of claim 1 wherein the chassis forms a portion of a housing.

### Claim 13

An energy storage unit comprising:
a housing including;
a housing top;
a housing bottom vertically opposed from the housing top;
a housing side;
an energy storage module, the energy storage module comprising:
a generally planar chassis;
a plurality of generally cylindrical storage cells having;
a terminal end;
a non-terminal end;
two connection terminals located on said terminal end;
a block of thermally conductive material having an array of generally cylindrical voids configured to accept said storage cells;
a generally planar clamping plate having a matrix of apertures configured to accept said connection terminals;
wherein said storage cells are securely located between said clamping plate on said terminal end and said chassis on said non-terminal end; and
wherein the chassis of said energy storage module is secured to the housing.

### Claim 14 (depends on 13)

The energy storage unit of claim 13 wherein the thermally conductive material is a phase change material.

### Claim 15 (depends on 14)

The energy storage unit of claim 14 wherein said phase change material incorporates an active cooling loop.

### Claim 16 (depends on 13)

The energy storage unit of claim 13 wherein the chassis of said energy storage module is secured to said housing side.

### Claim 17 (depends on 13)

The energy storage unit of claim 13 wherein the chassis of said energy storage module is secured to said housing side and an internal bulkhead.

### Claim 18 (depends on 13)

The energy storage unit of claim 13 wherein the chassis of said energy storage module is secured to a housing floor.

### Claim 19 (depends on 13)

The energy storage unit of claim 13 wherein two or more energy storage modules are secured to the housing, the energy storage modules being arranged vertically.

### Claim 20 (depends on 13)

The energy storage unit of claim 13 wherein two or more energy storage modules are secured to the housing, the energy storage modules being arranged horizontally.
