Battery anode component for a battery cell and method for manufacturing a battery anode component for a battery cell

Patent metadata

Field	Value
Publication number	US-9680140-B2
Application number	US-201214367099-A
Country	US
Kind code	B2
Filing date	Nov 19, 2012
Priority date	Dec 20, 2011
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A battery anode component for a battery cell including a current collector component having a lithium receiving side in which at least two spatially separated recesses are formed as lithium receiving chambers, at least two lithium-based anode material units which are situated in the at least two lithium receiving chambers, and a protective cover which covers the lithium receiving side at least partially and with the aid of which outer surfaces of the at least two lithium-based anode material units which are exposed by the current collector component are covered. A method is also described for manufacturing a battery anode component for a battery cell.

First claim

What is claimed is:

1. A battery anode component for a battery cell, comprising:
a current collector component having a lithium receiving side in which at least two spatially separated recesses are formed as lithium receiving chambers;
at least two lithium-based anode material units which are situated in the at least two lithium receiving chambers; and
a protective cover which covers the lithium receiving side at least partially and with which outer surfaces of the at least two lithium-based anode material units which are exposed by the current collector component are covered,
wherein at least one predetermined breaking point is formed in the current collector component between two adjacent lithium receiving chambers.

2. The battery anode component of claim 1 , wherein the at least one predetermined breaking point additionally extends through the protective cover.

3. The battery anode component of claim 1 ,
wherein the protective cover is formed from at least one ion-conductive material.

4. The battery anode component of claim 1 ,
wherein the protective cover includes at least one of a polymer material and a ceramic material.

5. The battery anode component of claim 1 , wherein the current collector component includes at least one of nickel, copper and a stainless steel.

6. The battery anode component of claim 1 , wherein the at least two lithium receiving chambers are formed at the lithium receiving side of the current collector component so that a web-shaped partition wall element protrudes from the bottom surfaces of the two adjacent lithium receiving chambers in each case.

7. A battery cell, comprising:
a battery anode component, including:
a current collector component having a lithium receiving side in which at least two spatially separated recesses are formed as lithium receiving chambers;
at least two lithium-based anode material units which are situated in the at least two lithium receiving chambers; and
a protective cover which covers the lithium receiving side at least partially and with which outer surfaces of the at least two lithium-based anode material units which are exposed by the current collector component are covered,
wherein at least one predetermined breaking point is formed in the current collector component between two adjacent lithium receiving chambers.

8. A battery, comprising:
at least one of the following:
(i) at least one battery anode component, including:
a current collector component having a lithium receiving side in which at least two spatially separated recesses are formed as lithium receiving chambers;
at least two lithium-based anode material units which are situated in the at least two lithium receiving chambers; and
a protective cover which covers the lithium receiving side at least partially and with which outer surfaces of the at least two lithium-based anode material units which are exposed by the current collector component are covered,
wherein at least one predetermined breaking point is formed in the current collector component between two adjacent lithium receiving chambers; and

(ii) at least one battery cell including the at least one battery anode component.

9. A method for manufacturing a battery anode component for a battery cell, the method comprising:
forming a current collector component having a lithium receiving side in which at least two spatially separated recesses are formed as lithium receiving chambers;
situating at least two lithium-based anode material units in the at least two lithium receiving chambers;
covering the lithium receiving side at least partially by a protective cover so that outer surfaces of the at least two lithium-based anode material units, which are exposed by the current collector component, are covered with the protective cover; and
forming at least one predetermined breaking point in the current collector component between two adjacent lithium receiving chambers.

10. The method of claim 9 , wherein the at least one predetermined breaking point is formed at least in the current collector component with a laser process.

11. The method of claim 9 , wherein the at least two lithium receiving chambers in the current collector component and/or the at least one predetermined breaking point in the current collector component are formed with a rolling process.

12. A method for manufacturing a battery cell, the method comprising:
manufacturing a battery anode component by performing the following:
forming a current collector component having a lithium receiving side in which at least two spatially separated recesses are formed as lithium receiving chambers;
situating at least two lithium-based anode material units in the at least two lithium receiving chambers;
covering the lithium receiving side at least partially by a protective cover so that outer surfaces of the at least two lithium-based anode material units, which are exposed by the current collector component, are covered with the protective cover; and
forming at least one predetermined breaking point in the current collector component between two adjacent lithium receiving chambers, and

situating the battery anode component in the battery cell.

13. A method for manufacturing a battery, the method comprising:
performing at least one of (i) and (ii) of the following:
(i) manufacturing at least one battery anode component by performing the following:
forming a current collector component having a lithium receiving side in which at least two spatially separated recesses are formed as lithium receiving chambers;
situating at least two lithium-based anode material units in the at least two lithium receiving chambers;
covering the lithium receiving side at least partially by a protective cover so that outer surfaces of the at least two lithium-based anode material units, which are exposed by the current collector component, are covered with the protective cover; and
forming at least one predetermined breaking point in the current collector component between two adjacent lithium receiving chambers; and

(ii) manufacturing at least one battery cell by performing the following:
manufacturing a battery anode component by performing the following:
forming a current collector component having a lithium receiving side in which at least two spatially separated recesses are formed as lithium receiving chambers;
situating at least two lithium-based anode material units in the at least two lithium receiving chambers;
covering the lithium receiving side at least partially by a protective cover so that outer surfaces of the at least two lithium-based anode material units, which are exposed by the current collector component, are covered with the protective cover; and
forming at least one predetermined breaking point in the current collector component between two adjacent lithium receiving chambers; and

situating the battery anode component in the battery cell; and

situating the at least one of at least one battery anode component and at least one battery cell in the battery.

14. The battery anode of claim 1 , wherein the protective cover covers the recesses and protects any content of the recesses.

15. The battery anode of claim 14 , wherein the breaking point extends through the protective cover.

16. The battery cell of claim 7 , wherein the protective cover covers the recesses and protects the lithium-based anode material units.

17. The battery cell of claim 16 , wherein the breaking point extends through the protective cover.

18. The battery of claim 8 , wherein the protective co

Assignees

• Bosch Gmbh Robert

Inventors

• Tenzer Martin

Classifications

• Y10T29/49108

  Electric battery cell making · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M10/4235

  Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence) · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M4/76

  Containers for holding the active material, e.g. tubes, capsules · CPC title