# US 9,871,276 B2 · Battery cell cooling plate

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- Number: US 9,871,276 B2
- Document ID: US9871276B2
- Status: Granted
- Kind: B2
- Application number: 14/453,786
- Filed: 2014-08-07
- Published: 2016-02-11
- Granted: 2018-01-16
- Earliest claimed: 2014-08-07
- Assignees: GM Global Technology Operations LLC
- Applicants: GM Global Technology Operations LLC
- Inventors: Robert N. Shaaia; Roger M. Brisbane
- Web page: https://patentgrep.com/patent/US9871276B2

## CPC

- H01M 10/6557: arranged between the cells
- F28F 3/12: Elements constructed in the shape of a hollow panel, e.g. with channels {(F28D1/02, F28D1/03 take precedence)}
- F28F 21/065: {the heat-exchange apparatus employing plate-like or laminated conduits}
- F28F 2265/24: for electrical insulation
- F28F 2275/025: by using adhesives
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A cooling plate design for cooling a battery cell is provided that employs a plastic plate having cutouts for coolant flow paths. The plastic plate has a layer of adhesive film on each side to maintain coolant in the channels. Compression within an alternating battery cell and coolant plate stack provides pressure that minimizes coolant load on the film. Methods to manufacture the cooling plate are also provided.

## Claims

### Claim 1

A cooling plate comprising:
a substantially planar plate having a first surface, a second surface, and a cutout, the cutout including an inlet, an outlet, and a flow field between the inlet and the outlet;
wherein the inlet and the outlet are disposed on a respective exterior edge surface of the substantially planar plate, between the first surface and the second surface;
a first film coupled to the first surface;
a second film coupled to the second surface, wherein the flow field, the first film, and the second film cooperate to form at least one conduit fluidly coupling the inlet and the outlet; and
wherein the first film includes an adhesive bonding the first film and the first surface of the substantially planar plate together, and the second film includes an adhesive bonding the second film and the second surface of the substantially planar plate together, with the adhesive bond between the first film and the first surface and between the second film and the second surface providing a fluid tight seal therebetween to prevent leakage of coolant between the first film and the first surface of the planar plate, and between the second film and the second surface of the planar plate respectively.

### Claim 2 (depends on 1)

The cooling plate of claim 1, wherein the substantially planar plate comprises an electrically insulating material.

### Claim 3 (depends on 1)

The cooling plate of claim 1, wherein the substantially planar plate comprises a polymeric material.

### Claim 4 (depends on 3)

The cooling plate of claim 3, wherein the polymeric material is a member of the group consisting of a silicone, an elastomer, a polyolefin, a polyvinyl chloride, a polystyrene, a polyamide, a polyimide, a polyurethane, a polyester, and combinations thereof.

### Claim 5 (depends on 3)

The cooling plate of claim 3, wherein the polymeric material comprises nylon 6,6.

### Claim 6 (depends on 1)

The cooling plate of claim 1, wherein one of the first film and the second film comprises a resilient material.

### Claim 7 (depends on 1)

The cooling plate of claim 1, wherein one of the first film and the second film comprises an electrically insulating material.

### Claim 8 (depends on 1)

The cooling plate of claim 1, wherein the adhesive film is one of a pressure sensitive adhesive film, a heat activated adhesive film, and a UV activated adhesive film.

### Claim 9 (depends on 1)

The cooling plate of claim 1, wherein one of the first film and the second film comprises polyethylene terephthalate.

### Claim 10 (depends on 1)

The cooling plate of claim 1, wherein the conduit follows a tortuous path between the inlet and the outlet.

### Claim 11 (depends on 1)

The cooling plate of claim 1, wherein the conduit includes at least one branch point.

### Claim 12 (depends on 1)

The cooling plate of claim 1, wherein the flow field, the first film, and the second film cooperate to form a plurality of conduits fluidly coupling the inlet and the outlet.