Laminated lithium battery

• US 9,887,429 B2
• Filed: 12/21/2011
• Issued: 02/06/2018
• Est. Priority Date: 12/21/2011
• Status: Active Grant

• Current Assignee: KLA Corporation
• Original Assignee: Front Edge Technology, Inc (KLA Corporation)
• Inventors: Shih, Tung-Hsiu, Nieh, Kai Wei, Krasnov, Victor, Liang, Jiuh-Ming
• Primary Examiner(s): Takeuchi, Yoshitoshi
• Application Number:
  US13/333,969
• Publication Number:
  US 20130164607A1
• Time in Patent Office: 2,239 Days
• Field of Search: None
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49115 including coating or impregnating
• CPC Class Codes: Y10T 29/53135 Storage cell or battery

Abstract

A lithium battery comprises at least one battery cell on a support, the battery cell comprising a plurality of electrodes about an electrolyte. A protective casing comprises a cover spaced apart from and covering the battery cell to form a gap therebetween with a polymer filling the gap. In one version, the polymer comprises polyvinylidene chloride polymer. First and second terminals extend out of the protective casing, the first and second terminals being connected to different electrodes of the battery cell.

Claims

1. A thin film lithium battery comprising:

(a) at least one battery cell on a support, the battery cell comprising (i) battery component layers that are thin films, the battery component layers including a plurality of electrodes about an electrolyte, and (ii) a top surface;

(b) a protective casing contacting the battery cell, the casing comprising;

(i) polyvinylidene chloride polymer contacting and covering the top surface of the battery cell, the polyvinylidene chloride polymer having a top surface; and

(ii) a metal film contacting the top surface of the polyvinylidene chloride polymer, the metal film comprising aluminum, copper, titanium, or nickel;

(c) a plurality of layers covering at least a portion of the polyvinylidene chloride polymer or metal film, the plurality of layers comprising first and second layers, the second layer being a different material than the first layer; and

(d) first and second terminals extending out of the protective casing, the first and second terminals being connected to different electrodes of the battery cell.

2. A battery according to claim 1 wherein the polyvinylidene chloride polymer further covers the side perimeter surfaces of the battery cell.

3. A battery according to claim 1 wherein the polyvinylidene chloride polymer further covers a peripheral edge of the battery.

4. A battery according to claim 1 wherein the first layer comprises ceramic and the second layer comprises polymer.

5. A battery according to claim 4 wherein the ceramic comprises diamond-like carbon, silicon oxide or aluminum oxide.

6. A thin film lithium battery comprising:

(a) at least one battery cell on a support, the battery cell comprising battery component layers that are thin films, the battery component layers including a plurality of electrodes about an electrolyte, and the battery cell having a top surface;

(b) a protective casing contacting the battery cell, the casing comprising;

(i) polyvinylidene chloride polymer contacting and covering the top surface of the battery cell, the polyvinylidene chloride polymer having a top surface; and

(ii) a metal film contacting the top surface of the polyvinylidene chloride polymer to follow a contour of the battery cell, the metal film comprising aluminum, copper, titanium, or nickel;

(c) a plurality of layers covering at least a portion of the polyvinylidene chloride polymer or metal film, the plurality of layers comprising first and second layers, the second layer being a different material than the first layer; and

(d) first and second terminals extending out of the protective casing, the first and second terminals being connected to different electrodes of the battery cell.

7. A battery according to claim 6 wherein the top surface of the battery cell comprises an electrode that is an anode.

8. A battery according to claim 6 wherein the polyvinylidene chloride polymer conforms to depressions and protrusions of the top surface of the battery cell to planarize the battery cell.

9. A battery according to claim 6 wherein the polyvinylidene chloride polymer comprises a thickness of less than 60 microns.

10. A battery according to claim 6 wherein the first layer comprises a ceramic and the second layer comprises a polymer.

11. A battery according to claim 10 wherein the ceramic comprises diamond-like carbon, silicon oxide or aluminum oxide.

12. A battery according to claim 10 wherein the polymer comprises a thermoset polymer, thermoplastic polymer, epoxy, polyurethane, polyvinylidene chloride, polyvinylidene fluoride, fluoropolymer, polytetrafluoroethylene, perfluoroalkoxy polymer resin, fluorinated ethylene-propylene, polyethylenetetrafluoroethylene, polyvinylfluoride, polyethylenechlorotrifluoroethylene, polyvinylidene fluoride, polychlorotrifluoro ethylene or parylene.

13. A battery according to claim 6 wherein the electrolyte comprises a lithium-containing material.

14. A battery according to claim 13 wherein the electrodes comprise a lithium-containing material.

15. A battery according to claim 6 wherein the polyvinylidene chloride polymer comprises:

(1) a water vapor permeability <

0.1 g*mm/(m²*day); and

(2) an oxygen and nitrogen permeability <

0.1 (cm³*mm)/(m²*day).

16. A battery according to claim 6 wherein the polyvinylidene chloride polymer further covers the side perimeter surfaces of the battery cell.

17. A battery according to claim 6 wherein the plurality of layers comprises additional layers of ceramic, polymer, or other materials.

18. A battery according to claim 6 further comprising a cover covering the plurality of layers.

19. A battery according to claim 18 wherein the cover comprises a ceramic, flexible film or support.

20. A battery according to claim 18 wherein the cover is shaped and sized so that portions of electrodes comprising the cathode current collector and anode current collector extend beyond the area covered by the cover to be exposed as the first and second terminals.

21. A thin film lithium battery comprising:

(a) at least one battery cell on a support, the battery cell comprising battery component layers that are thin films, the battery component layers including an anode and cathode about an electrolyte, and the battery cell having a top surface;

(b) a protective casing contacting the battery cell, the casing comprising;

(i) a polyvinylidene chloride polymer contacting and covering the top surface of the battery cell, the polyvinylidene chloride polymer having a top surface; and

(ii) a metal film contacting the top surface of the polyvinylidene chloride polymer, the metal film comprising aluminum, copper, titanium, or nickel;

(c) a plurality of layers covering at least a portion of the polyvinylidene chloride polymer or metal film, the plurality of layers comprising a ceramic layer and a polymer layer; and

(d) first and second terminals extending out of the protective casing, the first and second terminals being connected to different electrodes of the battery cell.

22. A battery according to claim 21 wherein the polyvinylidene chloride polymer further covers the side perimeter surfaces of the battery cell.

23. A battery according to claim 21 wherein the polyvinylidene chloride polymer comprises a thickness of less than 60 microns.

24. A battery according to claim 21 wherein the ceramic layer comprises diamond-like carbon, silicon oxide or aluminum oxide.

25. A battery according to claim 21 wherein the electrolyte comprises a lithium-containing material.