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Single Cell Fault Tolerant Battery System Architecture

Abstract: A battery system may include multiple battery cells grouped into modules. Each battery module may have a diffuser plate to direct the hot gases and molten material that are ejected during cell failure. The gas and material may be directed away from the nearest neighboring cells in the event of a single cell thermal runaway. Residual thermal energy is wicked away, absorbed or contained to keep heat away from the neighboring cells. These and other features may manage the blast energy and residual thermal energy of a single cell failure event. This may prevent a cascading failure of the larger battery system, thereby mitigating the risk of injury to personnel and property.

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Patent Information

Application #
Filing Date
21 June 2019
Publication Number
05/2020
Publication Type
INA
Invention Field
ELECTRICAL
Status
Email
patent@depenning.com
Parent Application
Patent Number
Legal Status
Grant Date
2023-10-16
Renewal Date

Applicants

GENERAL ATOMICS
3550 General Atomics Ct., San Diego, California 92121, USA

Inventors

1. GILBERTO FERNANDO RODRIGUEZ
11223 Del Diablo Street, San Diego, California 92129, USA
2. BORIS TYROL
10695 Wexford Street, #3, San Diego, California 92131, USA
3. SCOTT BRIAN MAHAR
15805 Cumberland Drive, Poway, California 92064, USA
4. GORDON F. SMITH II
4912 35th Street, San Diego, California 92116, USA
5. COREY JOHN JASKOLSKI
33703 Siasconset Road, Windsor, Colorado 80550, USA

Specification

WE CLAIM:
1. An apparatus for preventing battery failure, comprising:
a plurality of lithium ion electrochemical cells, wherein each of the plurality of the lithium ion electrochemical cells is configured to generate electrical energy from chemical reactions, each of the plurality of the lithium ion electrochemical cells comprising a respective first end and a respective second end, wherein each respective first end comprises a respective vent, wherein each of said plurality of lithium ion electrochemical cells is aligned along parallel axes with each other of said plurality of lithium ion electrochemical cells with each said respective first end in a first direction, and each said respective second end in a second direction;
a first bus electrically coupled to respective first electrodes of each of said plurality of lithium ion electrochemical cells at said respective first end;
a second bus electrically coupled to respective second electrodes of each of said plurality of lithium ion electrochemical cells at said respective second end; and
a diffuser plate juxtaposed with said first bus at said respective first end, wherein the diffuser plate is aligned with a plane normal to the parallel axes, the diffuser plate comprising a first side facing the respective first ends and a second side facing away from the respective first ends, the diffuser plate comprising channels on said first side.
19

2. The apparatus of claim 1, wherein:
said plurality of lithium ion electrochemical cells comprises at least two lithium ion electrochemical cells.
3. The apparatus of claim 1, further
comprising:
a foam cell support comprising a plurality of tubes each of which holds one of said plurality of lithium ion electrochemical cells in a spaced-apart relationship relative to others of said plurality of lithium ion electrochemical cells.
4. The apparatus of claim 3, wherein:
said foam cell support comprises polyurethane.
5. The apparatus of claim 1, further
comprising:
a first glass epoxy composite material interposed between said first bus and each of said plurality of said lithium ion electrochemical cells at said respective first end and
a second glass epoxy composite material interposed between said second bus and each of said plurality of said lithium ion electrochemical cells at said respective second end.
6. The apparatus of claim 5, wherein:
said first glass epoxy composite material
comprises G10; and
said second glass epoxy composite material comprises G10.
7. The apparatus of claim 1, further
comprising:
20

a heat sink layer juxtaposed with one of said first bus and said second bus.
8. The apparatus of claim 7, wherein:
said heat sink layer comprises a phase change material.
9. The apparatus of claim 1, further
comprising:
a third bus electrically coupled to respective second electrodes of each of said plurality of lithium ion electrochemical cells at said respective second end, wherein the heat sink layer is interposed between the second bus and the third bus.
10. The apparatus of claim 9, further
comprising:
a fuse interposed between the second bus and the third bus.
11. The apparatus of claim 1, further
comprising:
a fuse coupled to one of said first bus and said second bus.
12. The apparatus of claim 1, wherein:
said first bus comprises at least one of
nickel, aluminum and copper; and
said second bus comprises at least one of nickel, aluminum and copper.
13. A method of providing a system for
preventing battery failure, comprising:
providing a plurality of lithium ion electrochemical cells, wherein each of the plurality of
21

the lithium ion electrochemical cells is configured to generate electrical energy from chemical reactions, each of the plurality of the lithium ion electrochemical cells comprising a respective first end and a respective second end, wherein each respective first end comprises a respective vent,
aligning each of said plurality of lithium ion electrochemical cells is aligned along parallel axes with each other of said plurality of lithium ion electrochemical cells with each said respective first end in a first direction, and each said respective second end in a second direction;
coupling a first bus electrically to respective first electrodes of each of said plurality of lithium ion electrochemical cells at said respective first end;
coupling a second bus electrically to respective second electrodes of each of said plurality of lithium ion electrochemical cells at said respective second end; and
juxtaposing a diffuser plate with said first bus at said respective first end, comprising aligning the diffuser plate a plane normal to the parallel axes, the diffuser plate comprising a first side facing the respective first ends and a second side facing away from the respective first ends, the diffuser plate comprising channels on said first side.
14. The method of claim 13, wherein:
said plurality of lithium ion electrochemical cells comprises at least two lithium ion electrochemical cells.
15. The method of claim 13, further
comprising:
22

interposing a foam cell support comprising a plurality of tubes, each of which holds one of said plurality of lithium ion electrochemical cells, in a spaced-apart relationship relative to others of said plurality of lithium ion electrochemical cells.
16. The method of claim 15, wherein:
said foam cell support comprises polyurethane.
17. The method of claim 13, further
comprising:
interposing a first glass epoxy composite material interposed between said first bus and each of said plurality of said lithium ion electrochemical cells at said respective first end; and
interposing a second glass epoxy composite material interposed between said second bus and each of said plurality of said lithium ion electrochemical cells at said respective second end.
18. The method of claim 17, wherein:
said first glass epoxy composite material
comprises G10; and
said second glass epoxy composite material comprises G10.
19. The method of claim 13, further
comprising:
juxtaposing a heat sink layer with one of said first bus and said second bus.
20. The method of claim 19, wherein:
said heat sink layer comprises a phase change material.
23

21. The method of claim 13, further
comprising:
coupling a third bus electrically to respective second electrodes of each of said plurality of lithium ion electrochemical cells at said respective second end, wherein the heat sink layer is interposed between the second bus and the third bus.
22. The method of claim 21, further
comprising:
interposing a fuse between the second bus and the third bus.
23. The method of claim 13, further
comprising:
coupling a fuse to one of said first bus and said second bus.
24. The method of claim 13, wherein:
said first bus comprises nickel; and
said second bus comprises nickel.
25. A method for preventing battery failure,
comprising:
using a plurality of lithium ion electrochemical cells, wherein each of the plurality of the lithium ion electrochemical cells is configured to generate electrical energy from chemical reactions, each of the plurality of the lithium ion electrochemical cells comprising a respective first end and a respective second end, wherein each respective first end comprises a respective vent, wherein each of said plurality of lithium ion electrochemical cells is aligned along parallel axes with each other of said plurality of
24

lithium ion electrochemical cells with each said respective first end in a first direction, and each said respective second end in a second direction;
using a first bus electrically coupled to respective first electrodes of each of said plurality of lithium ion electrochemical cells at said respective first end;
using a second bus electrically coupled to respective second electrodes of each of said plurality of lithium ion electrochemical cells at said respective second end; and
using a diffuser plate juxtaposed with said first bus at said respective first end, wherein the diffuser plate is aligned with a plane normal to the parallel axes, the diffuser plate comprising a first side facing the respective first ends and a second side facing away from the respective first ends, the diffuser plate comprising channels on said first side.
26. The method of claim 25, wherein:
said plurality of lithium ion electrochemical cells comprises at least two lithium ion electrochemical cells.
27. The method of claim 25, further
comprising:
using a foam cell support comprising a plurality of tubes each of which holds one of said plurality of lithium ion electrochemical cells in a spaced-apart relationship relative to others of said plurality of lithium ion electrochemical cells.
28. The method of claim 27, wherein:
said foam cell support comprises polyurethane.
25

29. The method of claim 25, further
comprising:
using a first glass epoxy composite material interposed between said first bus and each of said plurality of said lithium ion electrochemical cells at said respective first end; and
using a second glass epoxy composite material interposed between said second bus and each of said plurality of said lithium ion electrochemical cells at said respective second end.
30. The method of claim 29, wherein:
said first glass epoxy composite material
comprises G10; and
said second glass epoxy composite material comprises G10.
31. The method of claim 25, further
comprising:
using a heat sink layer juxtaposed with one of said first bus and said second bus.
32. The method of claim 31, wherein:
said heat sink layer comprises a phase change material.
33. The method of claim 25, further
comprising:
using a third bus electrically coupled to respective second electrodes of each of said plurality of lithium ion electrochemical cells at said respective second end, wherein the heat sink layer is interposed between the second bus and the third bus.
26

34. The method of claim 33, further
comprising:
using a fuse interposed between the second bus and the third bus.
35. The method of claim 25, further
comprising:
using a fuse coupled to one of said first bus and said second bus.
36. The method of claim 25, wherein:
said first bus comprises nickel; and
said second bus comprises nickel.
Dated this 21 day of June 2019
~Digitally signed~
Arindam Paul
REG.NO:IN/PA-174
of De Penning & De Penning
Agent for the Applicants
27

Documents

Application Documents

# Name Date
1 201944024685-IntimationOfGrant16-10-2023.pdf 2023-10-16
1 201944024685-US 16020717-DASCODE-1302 [21-06-2019].pdf 2019-06-21
2 201944024685-PatentCertificate16-10-2023.pdf 2023-10-16
2 201944024685-STATEMENT OF UNDERTAKING (FORM 3) [21-06-2019(online)].pdf 2019-06-21
3 201944024685-PROOF OF RIGHT [21-06-2019(online)].pdf 2019-06-21
3 201944024685-ABSTRACT [10-02-2022(online)].pdf 2022-02-10
4 201944024685-PRIORITY DOCUMENTS [21-06-2019(online)].pdf 2019-06-21
4 201944024685-CLAIMS [10-02-2022(online)].pdf 2022-02-10
5 201944024685-FORM 1 [21-06-2019(online)].pdf 2019-06-21
5 201944024685-COMPLETE SPECIFICATION [10-02-2022(online)].pdf 2022-02-10
6 201944024685-DRAWINGS [21-06-2019(online)].pdf 2019-06-21
6 201944024685-DRAWING [10-02-2022(online)].pdf 2022-02-10
7 201944024685-FER_SER_REPLY [10-02-2022(online)].pdf 2022-02-10
7 201944024685-DECLARATION OF INVENTORSHIP (FORM 5) [21-06-2019(online)].pdf 2019-06-21
8 201944024685-FORM 3 [10-02-2022(online)].pdf 2022-02-10
8 201944024685-COMPLETE SPECIFICATION [21-06-2019(online)].pdf 2019-06-21
9 201944024685-CLAIMS UNDER RULE 1 (PROVISIO) OF RULE 20 [21-06-2019(online)].pdf 2019-06-21
9 201944024685-Information under section 8(2) [10-02-2022(online)].pdf 2022-02-10
10 201944024685-OTHERS [10-02-2022(online)].pdf 2022-02-10
10 Correspondence by Agent_Assignmnet_01-07-2019.pdf 2019-07-01
11 201944024685-FORM 3 [02-07-2019(online)].pdf 2019-07-02
11 201944024685-PETITION UNDER RULE 137 [10-02-2022(online)].pdf 2022-02-10
12 201944024685-FER.pdf 2021-10-17
12 201944024685-FORM 3 [02-07-2019(online)]-1.pdf 2019-07-02
13 201944024685-FORM 18 [13-09-2019(online)].pdf 2019-09-13
13 201944024685-FORM-26 [29-07-2019(online)].pdf 2019-07-29
14 Correspondence by Agent _Power of Attorney_31-07-2019.pdf 2019-07-31
15 201944024685-FORM 18 [13-09-2019(online)].pdf 2019-09-13
15 201944024685-FORM-26 [29-07-2019(online)].pdf 2019-07-29
16 201944024685-FER.pdf 2021-10-17
16 201944024685-FORM 3 [02-07-2019(online)]-1.pdf 2019-07-02
17 201944024685-PETITION UNDER RULE 137 [10-02-2022(online)].pdf 2022-02-10
17 201944024685-FORM 3 [02-07-2019(online)].pdf 2019-07-02
18 Correspondence by Agent_Assignmnet_01-07-2019.pdf 2019-07-01
18 201944024685-OTHERS [10-02-2022(online)].pdf 2022-02-10
19 201944024685-CLAIMS UNDER RULE 1 (PROVISIO) OF RULE 20 [21-06-2019(online)].pdf 2019-06-21
19 201944024685-Information under section 8(2) [10-02-2022(online)].pdf 2022-02-10
20 201944024685-COMPLETE SPECIFICATION [21-06-2019(online)].pdf 2019-06-21
20 201944024685-FORM 3 [10-02-2022(online)].pdf 2022-02-10
21 201944024685-DECLARATION OF INVENTORSHIP (FORM 5) [21-06-2019(online)].pdf 2019-06-21
21 201944024685-FER_SER_REPLY [10-02-2022(online)].pdf 2022-02-10
22 201944024685-DRAWING [10-02-2022(online)].pdf 2022-02-10
22 201944024685-DRAWINGS [21-06-2019(online)].pdf 2019-06-21
23 201944024685-COMPLETE SPECIFICATION [10-02-2022(online)].pdf 2022-02-10
23 201944024685-FORM 1 [21-06-2019(online)].pdf 2019-06-21
24 201944024685-CLAIMS [10-02-2022(online)].pdf 2022-02-10
24 201944024685-PRIORITY DOCUMENTS [21-06-2019(online)].pdf 2019-06-21
25 201944024685-PROOF OF RIGHT [21-06-2019(online)].pdf 2019-06-21
25 201944024685-ABSTRACT [10-02-2022(online)].pdf 2022-02-10
26 201944024685-STATEMENT OF UNDERTAKING (FORM 3) [21-06-2019(online)].pdf 2019-06-21
26 201944024685-PatentCertificate16-10-2023.pdf 2023-10-16
27 201944024685-US 16020717-DASCODE-1302 [21-06-2019].pdf 2019-06-21
27 201944024685-IntimationOfGrant16-10-2023.pdf 2023-10-16

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