Method of producing a device having batteries with testing of the operation of the batteries before connecting them electrically

Patent metadata

Field	Value
Publication number	US-9423467-B2
Application number	US-201214128285-A
Country	US
Kind code	B2
Filing date	Jun 28, 2012
Priority date	Jul 1, 2011
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

The method of producing a device having batteries includes the following successive steps performed on a support substrate:
providing a support substrate including a first electrically conducting layer forming a main surface, simultaneously forming a plurality of batteries on the first electrically conducting layer, testing operation of the plurality of batteries to discriminate between a first group of functional batteries and a second group of defective batteries, forming a second electrically conducting layer electrically insulated from the first electrically conducting layer, the second electrically conducting layer and the first electrically conducting layer being configured to connect only the functional batteries in parallel.

First claim

The invention claimed is:

1. A method for producing a device having batteries, said method comprising the following successive steps:
providing a support substrate comprising a first electrically conducting layer forming a main surface;
simultaneously forming a plurality of batteries on the first electrically conducting layer, each battery of the plurality of batteries being formed in contact with the first electrically conducting layer;
performing a testing operation of the plurality of batteries to discriminate between a first group of functional batteries and a second group of defective batteries; and
forming a second electrically conducting layer electrically insulated from the first electrically conducting layer, the second electrically conducting layer and the first electrically conducting layer being configured to connect only the functional batteries in parallel.

2. The method according to claim 1 , wherein the plurality of batteries is formed on the first electrically conducting layer, the first electrically conducting layer electrically connecting the plurality of batteries.

3. The method according to claim 1 , wherein the plurality of batteries are situated in one and a same plane parallel to the support substrate.

4. The method according to claim 1 , wherein the plurality of batteries are arranged so as to obtain a filling ratio of the support substrate less than or equal to 40%, a surface of each battery being smaller than or equal to 10 4 μm 2 .

5. The method according to claim 1 , wherein each battery of the plurality of batteries comprises a stack comprising a first electrode, an electrolytic membrane, and a second electrode, the first electrode being in electric contact with the first electrically conducting layer.

6. The method according to claim 5 , wherein the testing step is performed by taking, for each battery of the plurality of batteries, a first electric contact on the first electrically conducting layer, and a second electric contact associated with the second electrode of the battery concerned so as to perform electric testing of each battery.

7. The method according to claim 1 , wherein the functional batteries are connected to the first electrically conducting layer and to the second electrically conducting layer, the defective batteries being electrically connected to one of the first electrically conducting layer and the second electrically conducting layer only or electrically insulated from the first electrically conducting layer and from the second electrically conducting layer.

8. The method according to claim 1 , wherein a portion of the first electrically conducting layer covered by the defective batteries is electrically insulated from another portion of the first electrically conducting layer electrically coupled to the functional batteries, before deposition of the second electrically conducting layer.

9. The method according to claim 1 , wherein the second electrically conducting layer is deposited so as to be electrically connected with all the batteries, said second electrically conducting layer being patterned to electrically insulate a portion of the second electrically conducting layer associated with a defective battery of another portion of the second electrically conducting layer common to the functional batteries.

10. The method according to claim 9 , wherein the step of simultaneous forming the plurality of batteries on the first electrically conducting layer comprises deposition of an electrolytic membrane common to all the batteries, said electrolytic membrane electrically insulating the first and second electrically conducting layers between the batteries.

11. The method according to claim 1 , wherein the second electrically conducting layer is deposited only on the functional batteries in order to form a battery device comprising the functional batteries electrically connected in parallel and the defective batteries electrically insulated from the functional batteries.

12. The method according to claim 1 , comprising:
deposition of an electrically insulating layer to cover all the batteries of the plurality of batteries;
localized opening of the electrically insulating layer to access the functional batteries only; and
deposition of the second electrically conducting layer to connect all the functional batteries through the electrically insulating layer.

13. The method according to claim 1 , wherein each battery of the plurality of batteries is tested individually.

14. The method according to claim 1 , wherein the second group of defective batteries are tested individually.

15. The method according to claim 1 , wherein the batteries of the plurality of batteries are spaced apart from each other in a direction parallel to the main surface of the support substrate.

16. The method according to claim 1 , wherein all the batteries of the plurality of batteries are contained in a space delineated by the first electrically conducting layer and the second electrically conducting layer, the first and second electrically conducting layers defining parallel planes.

17. The method according to claim 1 , wherein the first electrically conducting layer is continuous so as to electrically connect the plurality of batteries.

18. The method according to claim 1 , wherein the second electrically conducting layer is deposited so as to connect directly and continuously the functional batteries.

19. The method according to claim 1 , wherein forming the second electrically conducting layer is performed after the testing operation,
the first electrically conducting layer at least partly forming a first current collector of the battery device, and
the second electrically conducting layer at least partly forming a second current collector of the battery device.

Assignees

• Salot Raphael
• Achatz Philipp
• Martin Steve
• Oukassi Sami
• Commissariat à l'Energie Atomique et aux Energies Alternatives

Inventors

• Salot Raphael
• Achatz Philipp
• Martin Steve
• Oukassi Sami

Classifications

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M10/48

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01M6/40 Primary

  Printed batteries {, e.g. thin film batteries} · CPC title

• H01M10/4285

  Testing apparatus · CPC title