Batteries and Battery Manufacture Methods

Patent metadata

Field	Value
Publication number	US-2020358067-A1
Application number	US-201916697936-A
Country	US
Kind code	A1
Filing date	Nov 27, 2019
Priority date	May 6, 2019
Publication date	Nov 12, 2020
Grant date	—

Abstract

Batteries and associated methods of manufacture are described. According to one aspect, a battery includes a battery case, an anode within the battery case, a cathode within the battery case, a separator configured to electrically insulate the anode from the cathode and the battery case, an electrolyte in contact with the anode and the cathode, and first and second terminal connections connected with respective ones of the anode and the cathode, and wherein the first and second terminal connections are configured to conduct electrons between the anode and the cathode via a load which is external of the battery case.

First claim

What is claimed is:

1 . A battery comprising:
a battery case; an anode within the battery case; a cathode within the battery case; a separator configured to electrically insulate the anode from the cathode and the battery case; an electrolyte in contact with the anode and the cathode; and first and second terminal connections connected with respective ones of the anode and the cathode, and wherein the first and second terminal connections are configured to conduct electrons between the anode and the cathode via a load which is external of the battery case.

2 . The battery of claim 1 wherein the anode defines a first volume and the cathode is within the first volume defined by the anode.

3 . The battery of claim 2 wherein the anode surrounds the cathode.

4 . The battery of claim 1 wherein the anode comprises lithium.

5 . The battery of claim 1 wherein the cathode comprises CFx or MnO 2 powder.

6 . The battery of claim 5 wherein the cathode comprises at least one carbon additive configured to increase the electrical conductivity of the cathode.

7 . The battery of claim 1 wherein the anode comprises a plurality of different structures within the battery case, and the cathode is within different volumes defined by the different structures of the anode.

8 . The battery of claim 1 wherein the cathode comprises pores to receive the electrolyte.

9 . The battery of claim 1 wherein the cathode comprises at least one aperture which receives the electrolyte.

10 . The battery of claim 1 wherein the separator encapsulates the anode.

11 . The battery of claim 1 wherein the battery is a microbattery.

12 . The battery of claim 1 wherein the battery case is electrically conductive and the second terminal connection and the cathode contact the battery case.

13 . A battery manufacture method comprising:
providing an anode within a first volume which is defined by a battery case; providing a cathode within a second volume which is defined by the anode, wherein the anode and cathode are electrically insulated from one another; providing an electrolyte in contact with the anode and the cathode within the battery case; coupling a first terminal connection with the anode and a second terminal connection with the cathode, and wherein the first and second terminal connections are configured to conduct electrons between the anode and the cathode via a load which is external of the battery case; and sealing the anode, the cathode, and the electrolyte within the first volume defined by the battery case.

14 . The method of claim 13 further comprising electrically insulating the anode and cathode from one another using a separator.

15 . The method of claim 13 further comprising electrically insulating the anode from the battery case using a separator.

16 . The method of claim 13 further comprising encapsulating the anode within a separator comprising electrically-insulative material before providing the anode within the first volume defined by the battery case.

17 . The method of claim 13 further comprising forming the anode comprising providing lithium metal on a mesh, and providing the anode within the first volume after the forming.

18 . The method of claim 13 wherein the providing the anode comprises:
providing a first anode structure in the battery case which defines the second volume; and
providing a second anode structure within the second volume defined by the first anode structure.

19 . The method of claim 18 wherein the second anode structure defines a third volume, and wherein the providing the cathode comprises providing cathode material within the second and third volumes defined by the first and second anode structures, respectively.

20 . The method of claim 13 wherein the providing the cathode comprises providing a powder including cathode active material within the second volume.

21 . The method of claim 20 wherein the powder further includes filler material, and further comprising dissolving the filler material to form a plurality of pores within the cathode active material which receive the electrolyte.

22 . The method of claim 20 further comprising, prior to the providing the cathode within the second volume defined by the anode, forming the powder by mixing the cathode active material with carbon black and carbon nanotube.

23 . The method of claim 20 wherein the cathode active material is carbon monoflouride or manganese dioxide.

24 . The method of claim 13 wherein the anode comprises lithium.

25 . The method of claim 13 further comprising forming an aperture within the cathode which receives the electrolyte.

26 . The method of claim 13 further comprising forming a plurality of pores within the cathode which receive the electrolyte.

27 . The method of claim 13 wherein the battery comprises a microbattery.

Assignees

• Battelle Memorial Institute

Inventors

• Xiao Jie
• Wu Bingbin
• Deng Z Daniel

Classifications

• H01M50/469

  tubular or cylindrical · CPC title

• Y02P70/50

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

• H01M50/529

  Intercell connections through partitions, e.g. in a battery casing · CPC title

• H01M50/545

  formed by the casing of the cells (cup shaped terminals adapted for cells having curved cross-section H01M50/56) · CPC title

• H01M50/107

  having curved cross-section, e.g. round or elliptic (H01M50/103, H01M50/109, H01M50/11 take precedence) · CPC title