IP Library › Granted Patent US 12,381,275
Granted Patent B2
US 12,381,275 · App. 17/532,464 · Granted Aug 5, 2025

Stretchable and flexible lithium ion battery

Inventors: Avetik R. Harutyunyan (Santa Clara, CA); Oleg A. Kuznetsov (San Jose, CA)
Assignee: HONDA MOTOR CO., LTD.
H01M50/105H01M10/0525H01M10/0585H01M50/121H01M50/136H01M50/211H01M50/238H01M50/538H01M50/54
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Quick Facts
Patent No.
US 12,381,275
App. No.
17/532,464
Granted
Aug 5, 2025
Kind
B2
Abstract

The present disclosure relates to stretchable and flexible lithium ion batteries that can store high energy density. The stretchable and flexible lithium ion battery can comprise flexible battery pouch cells connected in a serial, parallel, flat, or 3D configuration by, for example, stretchable, flexible, twistable, and durable material, which may include stretchable and flexible conductive connections.

Claims (32)

1. A stretchable and flexible lithium ion battery comprising:

a plurality of flexible battery pouch cells comprising a first flexible battery pouch cell and a second flexible battery pouch cell, wherein:

the first flexible battery pouch cell comprises two or more flexible self-standing electrodes contained within a first flexible material packaging, and the second flexible battery pouch cell comprises two or more flexible self-standing electrodes contained within a second flexible material packaging,

the first flexible material packaging forms a first pouch containing the first battery pouch cell, and the second flexible material packaging forms a second pouch containing the second battery pouch cell, the first pouch being discrete from the second pouch, and the first packaging material being discontinuous with the second packaging material,

each of the two or more flexible self-standing electrodes comprised by the first flexible battery pouch cell and the second flexible battery pouch cell includes a conductive battery tab, and

at least one of the conductive battery tabs of the first flexible battery pouch cell is electrically connected to at least one of the conductive battery tabs of the second flexible battery pouch cell.

2. The stretchable and flexible lithium ion battery of claim 1 , wherein the conductive battery tabs are stretchable and flexible.

3. The stretchable and flexible lithium ion battery of claim 1 , further comprising a respective stretchable and flexible battery tab attachment attached to each of the conductive battery tabs, the stretchable and flexible battery tab attachments extending through the first or second flexible material packaging and external to the first or second flexible material packaging so as to connect the first flexible battery pouch cell to the second flexible battery pouch cell.

4. The stretchable and flexible lithium ion battery of claim 3 , wherein the flexible battery tab attachments comprise a spring metal, a metal mesh or gauze, a metal foil, a conductive polymer, a conductive fabric, a conductive thread, carbon nanotubes, a carbon nanotube yarn, or combinations thereof.

5. The stretchable and flexible lithium ion battery of claim 1 , wherein the stretchable and flexible lithium ion battery is free of a current collector, free of binder, or free of both a current collector and binder.

6. The stretchable and flexible lithium ion battery of claim 1 , further comprising a stretchable polymer matrix connecting the first flexible battery pouch cell to the second flexible battery pouch cell.

7. The stretchable and flexible lithium ion battery of claim 6 , wherein the stretchable polymer matrix comprises a flexible polymer, a flexible rubber, one or more springs, a stretchable fabric, an elastic, or combinations thereof.

8. The stretchable and flexible lithium ion battery of claim 1 , further comprising one or more springs extending between and connecting the first flexible battery pouch cell to the second flexible battery pouch cell.

9. The stretchable and flexible lithium ion battery of claim 3 , further comprising a stretchable polymer matrix between the first flexible battery pouch cell and the second flexible battery pouch cell, the stretchable polymer matrix covering the stretchable and flexible battery tab attachments.

10. The stretchable and flexible lithium ion battery of claim 9 , wherein the stretchable polymer matrix comprises a flexible polymer, a stretchable fabric, an elastic, or combinations thereof.

11. The stretchable and flexible lithium ion battery of claim 1 , further comprising joints connecting the first and second flexible material packaging with the conductive battery tabs.

12. The stretchable and flexible lithium ion battery of claim 1 , wherein the first flexible battery pouch cell is separately connected to at least a third flexible battery pouch cell of the plurality of flexible battery pouch cells.

13. The stretchable and flexible lithium ion battery of claim 1 , wherein the first and second flexible material packaging comprises flexible polymer, foil, rubber, fabric, biocompatible material, organic material, or combinations thereof.

14. The stretchable and flexible lithium ion battery of claim 1 , wherein the conductive battery tabs comprise a spring metal, a conductive polymer, a conductive fabric, carbon nanotubes, or any combination thereof.

15. The stretchable and flexible lithium ion battery of claim 1 , wherein each flexible self-standing electrode comprises:

a plurality of carbon nanotubes arranged in a webbed morphology with interconnected spaces among the carbon nanotubes, the interconnected spaces comprising an electrode active material and an electrolyte.

16. The stretchable and flexible lithium ion battery of claim 15 , wherein the electrolyte comprises NASICON, garnet, perovskite, LISICON, LiPON, Li 3 N, sulfide, argyrodite, and/or anti-perovskite.

17. The stretchable and flexible lithium ion battery of claim 15 , wherein the electrolyte is a solid electrolyte having a thickness from about 10 microns to 20 microns.

18. A method of making the stretchable and flexible lithium ion battery of claim 1 , the method comprising:

providing the plurality of flexible battery pouch cells; and

electrically connecting the conductive battery tab of the first flexible battery pouch cell of the plurality of flexible battery pouch cells to the conductive battery tab of the second flexible battery pouch cell of the plurality of flexible battery pouch cells.

19. The method of claim 18 , further comprising attaching a respective stretchable and flexible battery tab attachment to each of the conductive battery tabs, each stretchable and flexible battery tab attachment extending through the first and second flexible material packagings and external to the first and second flexible material packagings; and electrically connecting the stretchable and flexible battery tab attachment between the first flexible battery pouch cell and the second flexible battery pouch cell.

20. The method of claim 18 , further comprising adding a solid or gel electrolyte to the flexible self-standing electrodes.

21. The method of claim 18 , further comprising connecting the first and second flexible material packagings with the conductive battery tabs by joints.

22. The method of claim 18 , further comprising connecting the first flexible battery pouch cell to the second flexible battery pouch cell with a stretchable and flexible polymer matrix.

23. The stretchable and flexible lithium ion battery of claim 15 , wherein the electrolyte is a gel.

24. The stretchable and flexible lithium ion battery of claim 1 , wherein the first battery pouch cell contained in the first pouch is sealed off from the second battery pouch cell contained in the second pouch.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 29, 2021
From: HARUTYUNYAN, AVETIK R.; KUZNETSOV, OLEG A.
To: HONDA MOTOR CO., LTD.
Reel/Frame 058222/0717 →
Continuity (7)
Continuation PCTUS2020043017 · Jul 22, 2020
Continuation In Part 16777629 · Jan 30, 2020
Continuation In Part 16560747 · Sep 4, 2019
Provisional Application 62895831 · Sep 4, 2019
Provisional Application 62877165 · Jul 22, 2019
Provisional Application 62798938 · Jan 30, 2019
Related Publication 20220085441A1 · Mar 17, 2022
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