Insulating molding for a battery cell

Patent metadata

Field	Value
Publication number	US-10559784-B2
Application number	US-201715716783-A
Country	US
Kind code	B2
Filing date	Sep 27, 2017
Priority date	Sep 30, 2016
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

An insulating molding (1) for a housing of at least one battery cell is disclosed, specifically for a housing of at least one lithium-ion battery cell, wherein, on at least one molding sidewall (3a, 3b) of the insulating molding (1), a depression (5) is configured, which is constituted by means of a reduced wall thickness, in order to reduce the force acting on the battery cell.

First claim

What is claimed is:

1. A battery apparatus including an insulating molding ( 1 ) and at least one battery cell, wherein the insulating molding is positioned around a housing of the at least one battery cell, wherein, on at least one molding sidewall ( 3 a , 3 b ) of the insulating molding ( 1 ), a depression ( 5 ) is configured, which is constituted by means of a reduced wall thickness, in order to reduce the force acting on the battery cell, wherein the insulating molding ( 1 ) is in contact with the housing sidewalls of the battery cell, or wherein the insulating molding ( 1 ) is in contact with the housing sidewalls of the battery cell and on a housing base and/or a housing top cover of the battery cell.

2. The insulating molding ( 1 ) according to claim 1 , characterized in that the insulating molding ( 1 ) comprises at least four molding sidewalls ( 3 a , 3 b ), or in that the insulating molding ( 1 ) comprises at least four molding sidewalls ( 3 a , 3 b ), a molding base ( 4 ), and/or comprises a molding top cover.

3. The insulating molding ( 1 ) according to claim 1 , characterized in that the insulating molding ( 1 ) lies on the housing sidewalls of a battery cell, or the insulating molding ( 1 ) lies on the housing sidewalls of a battery cell and on a housing base and/or on a housing top cover of a battery cell.

4. The insulating molding ( 1 ) according to claim 1 , characterized in that the reduction in wall thickness is applied to an outer side ( 33 a ) of the at least one molding sidewall ( 3 a , 3 b ), such that the depression ( 5 ) is configured in the direction of the battery cell which is at least partially enclosed by the insulating molding ( 1 ).

5. The insulating molding ( 1 ) according to claim 1 , characterized in that the reduction in wall thickness is applied to an inner side ( 33 i ) of the at least one molding sidewall ( 3 a , 3 b ), such that the depression ( 5 ) extends away from the battery cell ( 1 ) which is at least partially enclosed by the insulating molding ( 1 ).

6. The insulating molding ( 1 ) according to claim 1 , characterized in that the reduction in wall thickness is applied to an inner side ( 33 i ) and an outer side ( 33 a ) of the at least one molding sidewall ( 3 a , 3 b ), such that two, depressions ( 5 ) are configured.

7. The insulating molding ( 1 ) according to claim 1 , characterized in that the inner side ( 33 i ) and/or the outer side ( 33 a ) of the at least one molding sidewall ( 3 a , 3 b ), in the region of the reduction in wall thickness, is cambered inwards towards the battery cell, which is at least partially enclosed by the insulating molding ( 1 ), or is cambered outwards from the battery cell, which is at least partially enclosed by the insulating molding ( 1 ), thus forming the depression ( 5 ).

8. The insulating molding ( 1 ) according to claim 1 , characterized in that the depression ( 5 ) is located in a central zone of the at least one molding sidewall ( 3 a , 3 b ), which is circumferentially enclosed by an edge zone ( 7 ) of the at least one molding sidewall ( 3 a , 3 b ).

9. The insulating molding ( 1 ) according to claim 1 , characterized in that the insulating molding ( 1 ) is configured as a housing for at least one battery cell ( 10 ).

10. The insulating molding ( 1 ) as claimed in claim 1 , characterized in that the insulating molding ( 1 ) is comprised of plastic.

11. The insulating molding ( 1 ) as claimed in claim 1 , characterized in that the insulating molding ( 1 ) is produced by an injection-molding process.

12. The insulating molding ( 1 ) as claimed in claim 1 , characterized in that the insulating molding ( 1 ) has a beading ( 9 ) at one edge of the molding sidewall ( 3 a , 3 b ).

13. A battery, comprising at least two battery cells according to claim 1 .

14. The battery as claimed in claim 13 , wherein the battery cells comprise insulating moldings ( 1 ) having depressions ( 5 ) of different sizes.

15. The insulating molding ( 1 ) according to claim 1 , characterized in that the insulating molding ( 1 ) comprises at least four molding sidewalls ( 3 a , 3 b ), which are configured with a full surface design, or in that the insulating molding ( 1 ) comprises at least four molding sidewalls ( 3 a , 3 b ), which are configured with a full-surface design, and a molding base ( 4 ), which is configured with a full-surface design, and/or comprises a molding top cover.

16. The insulating molding ( 1 ) according to claim 1 , characterized in that the insulating molding ( 1 ) lies directly on the housing sidewalls of a battery cell, or the insulating molding ( 1 ) lies directly on the housing sidewalls of a battery cell and on a housing base and/or on a housing top cover of a battery cell.

17. A battery apparatus including at least one battery cell and an insulating molding ( 1 ) in contact with a housing of the at least one battery cell, wherein, on at least one molding sidewall ( 3 a , 3 b ) of the insulating molding ( 1 ), a depression ( 5 ) is configured, which is constituted by means of a reduced wall thickness, in order to reduce the force acting on the battery cell, characterized in that the reduction in wall thickness is applied to an inner side ( 33 i ) and an outer side ( 33 a ) of the at least one molding sidewall ( 3 a , 3 b ), such that two mutually-opposing depressions ( 5 ) are configured.

18. An insulating molding ( 1 ) for a housing of at least one battery cell, wherein, on at least one molding sidewall ( 3 a , 3 b ) of the insulating molding ( 1 ), a depression ( 5 ) is configured, which is constituted by means of a reduced wall thickness, in order to reduce the force acting on the battery cell, wherein the insulating molding ( 3 a , 3 b ) has a first dimension and a second dimension, and the depression ( 5 ) has a third dimension and a fourth dimension, wherein the third dimension of the depression ( 5 ) has a length of at least half of the first dimension of the insulating molding ( 3 a , 3 b ), and the fourth dimension of the depression ( 5 ) has a length of at least half of the second dimension of the insulating molding ( 3 a , 3 b ) and the first and third dimensions and perpendicular to the second and fourth dimensions, wherein the depression has a surface area defined by the third and fourth dimensions.

19. An insulating molding ( 1 ) for a housing of at least one battery cell, wherein, on at least one molding sidewall ( 3 a , 3 b ) of the insulating molding ( 1 ), a depression ( 5 ) is configured, which is constituted by means of a reduced wall thickness, in order to reduce the force acting on the battery cell, wherein the depression ( 5 ) has a first set of opposing sides, a second set of opposing sides, and a planar surface between one of the sets of opposing sides, wherein an area of the planar surface is at least half of an area of a surface of the at least one molding sidewall.

Assignees

• Bosch Gmbh Robert

Inventors

• Striegel Kai-Uli
• Gerlach Martin
• Kretschmar Thomas
• Kegel Timo

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• B29D24/00

  Producing articles with hollow walls {(B29D99/0028 takes precedence)} · CPC title

• B29C45/0001

  characterised by the choice of material · CPC title

• H01M2/0217

  Electricity · mapped topic