# US 2021/0280941 A1 · Housing with integrated spark arrestor

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- Number: US 2021/0280941 A1
- Document ID: US20210280941A1
- Status: Published application
- Kind: A1
- Application number: 17/192,283
- Filed: 2021-03-04
- Published: 2021-09-09
- Earliest claimed: 2020-03-04
- Assignees: Donaldson Company, Inc.
- Applicants: Donaldson Company, Inc.
- Inventors: Aflal Rahmathullah; Daniel J. Dotzler; James P. Moorman; Jacob L. Sanders
- Web page: https://patentgrep.com/patent/US20210280941A1

## CPC

- H01M 50/383: Flame arresting or ignition-preventing means
- H01M 50/325: comprising deformable valve members, e.g. elastic or flexible valve members
- H01M 50/394: {Gas-pervious parts or elements}
- 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

A battery housing has a plurality of housing sidewalls defining an enclosure, where a first housing sidewall of the plurality of housing sidewalls defines a plurality of openings cumulatively defining a valve opening. The housing defines a valve coupling structure around the valve opening.

## Claims

### Claim 1

A battery housing comprising:
a plurality of housing sidewalls defining an enclosure, wherein a first housing sidewall of the plurality of housing sidewalls defines a plurality of openings cumulatively defining a valve opening, wherein the first housing sidewall is constructed of metal; and
the first housing sidewall defining a valve coupling structure around the valve opening.

### Claim 2 (depends on 1)

The battery housing of claim 1, wherein the valve coupling structure comprises a plurality of bayonet connector openings around the valve opening.

### Claim 3 (depends on 1)

The battery housing of claim 1, wherein the valve coupling structure comprises an opening extending entirely through a thickness of the first housing sidewall.

### Claim 4 (depends on 1)

The battery housing of claim 1, wherein the coupling structure extends no more than partially through a thickness of the first housing sidewall.

### Claim 5 (depends on 1)

The battery housing of claim 1, wherein the first housing sidewall has a first face within the enclosure and a second face opposite the first face, wherein the second face is outside of the enclosure, and the valve opening is positioned between the first face and the coupling structure.

### Claim 6 (depends on 1)

The battery housing of claim 1, wherein the first housing sidewall has a first face within the enclosure and a second face opposite the first face, wherein the second face is outside of the enclosure, and each of the valve opening and the coupling structure extend through the first face and the second face.

### Claim 7 (depends on 1)

The battery housing of claim 1, wherein the valve coupling structure comprises a screw thread defined by the first housing sidewall around the valve opening.

### Claim 8 (depends on 1)

The battery housing of claim 1, wherein each of the plurality of openings have a maximum opening dimension of no more than 3 mm.

### Claim 9 (depends on 1)

The battery housing of claim 1, wherein the plurality of openings comprises at least 5 openings.

### Claim 10

A vented system comprising:
a battery housing comprising a plurality of housing sidewalls defining an enclosure, wherein a first housing sidewall of the plurality of housing sidewalls defines a plurality of openings cumulatively defining a valve opening, and the housing further defining a coupling structure around the valve opening;
a valve comprising:
a valve body having a mating structure coupled to the coupling structure and the valve body defining an airflow pathway from the valve opening to an outside environment, and
a film coupled to the valve body, wherein the film is disposed across the airflow pathway; and
a seal compressed between the first housing sidewall and the valve body around the valve opening.

### Claim 11 (depends on 10)

The vented system of claim 10, wherein the seal is disposed around the mating structure.

### Claim 12 (depends on 10)

The vented system of claim 10, wherein the coupling structure and the mating structure define a threaded connection.

### Claim 13 (depends on 10)

The vented system of claim 10, wherein the coupling structure and the mating structure define a bayonet connection.

### Claim 14 (depends on 10)

The vented system of claim 10, wherein the valve body comprises a puncturing member extending towards the film.

### Claim 15 (depends on 10)

The vented system of claim 10, wherein the each of the plurality of openings have a maximum opening dimension of no more than 3 mm.

### Claim 16 (depends on 10)

The vented system of claim 10, wherein the valve coupling structure comprises a screw thread defined by the first housing sidewall around the valve opening.

### Claim 17 (depends on 10)

The vented system of claim 10, wherein the first housing sidewall has a first face within the enclosure and a second face opposite the first face, wherein the second face is outside of the enclosure, and the valve opening is positioned between the first face and the coupling structure.

### Claim 18 (depends on 10)

The vented system of claim 10, wherein the film is ePTFE.