Method for forming a thermally conductive connection between a plurality of battery cells and a temperature-regulating body, and battery module

Patent metadata

Field	Value
Publication number	US-11799120-B2
Application number	US-202117189400-A
Country	US
Kind code	B2
Filing date	Mar 2, 2021
Priority date	Mar 2, 2020
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A method for forming a thermally conductive connection between a plurality of battery cells ( 2 ) and a temperature-regulating body ( 1 ) of a battery module ( 100 ), wherein, in a first method step, an adhesive ( 3 ) comprising at least one first component ( 31 ) and at least one second component ( 32 ) is applied to the temperature-regulating body ( 1 ) or to the plurality of battery cells ( 2 ), wherein a first proportion ( 41 ) of the at least one first component ( 31 ) and/or a second proportion ( 42 ) of the at least one second component ( 32 ) is changed during the application of the adhesive ( 3 ) over the temperature-regulating body ( 1 ) or the plurality of battery cells ( 2 ), wherein, in a second method step, the plurality of battery cells ( 2 ) is connected to the temperature-regulating body ( 1 ) in such a way that an inhomogeneous material bond is formed between the plurality of battery cells ( 2 ) and the temperature-regulating body ( 1 ).

First claim

The invention claimed is:

1. A method for forming a thermally conductive connection between a plurality of battery cells ( 2 ) and a temperature-regulating body ( 1 ) of a battery module ( 100 ), the method comprising
in a first method step, applying an adhesive ( 3 ) comprising at least one first component ( 31 ) and at least one second component ( 32 ) to the temperature-regulating body ( 1 ) or to the plurality of battery cells ( 2 ), wherein a first proportion ( 41 ) of the at least one first component ( 31 ) and/or a second proportion ( 42 ) of the at least one second component ( 32 ) is changed during the application of the adhesive ( 3 ) to the temperature-regulating body ( 1 ) or to the plurality of battery cells ( 2 ), and
in a second method step, connecting the plurality of battery cells ( 2 ) to the temperature-regulating body ( 1 ) in such a way that an inhomogeneous material bond is formed between the plurality of battery cells ( 2 ) and the temperature-regulating body ( 1 ).

2. The method according to claim 1 , wherein the at least one first component ( 31 ) of the adhesive ( 3 ) and the at least one second component ( 32 ) of the adhesive ( 3 ) are mixed with one another before the first method step.

3. The method according to claim 1 , wherein the adhesive ( 3 ) in a first region ( 51 ) is applied in such a way that the first proportion ( 41 ) of the at least one first component ( 31 ) is higher than the second proportion ( 42 ) of the at least one second component ( 32 ) and the adhesive ( 3 ) in a second region ( 52 ) is applied in such a way that the second proportion ( 42 ) of the at least one second component ( 32 ) is higher than the first proportion ( 41 ) of the at least one first component ( 31 ).

4. The method according to claim 1 , wherein the adhesive ( 3 ) is applied in a uniformly distributed manner.

5. The method according to claim 1 , wherein the adhesive ( 3 ) is applied with a plurality of portions ( 9 ) which are arranged parallel to one another.

6. The method according to claim 1 , wherein the adhesive ( 3 ) is applied in a continuously running strand ( 9 ).

7. The method according to claim 1 , wherein the at least one first component ( 31 ) and/or the at least one second component ( 32 ) are selected from an epoxy, acrylate, silicone or urea.

8. A method for forming a thermally conductive connection between a plurality of battery cells ( 2 ) and a temperature-regulating body ( 1 ) of a battery module ( 110 ), the method comprising:
in a first method step, an adhesive ( 3 ) comprising at least one first component ( 31 ) and at least one second component ( 32 ) is applied to the temperature-regulating body ( 1 ) or to the plurality of battery cells ( 2 ), wherein the at least one first component ( 31 ) and the at least one second component ( 32 ) are applied one on top of the other in a height direction ( 11 ), wherein in a second method step, the plurality of battery cells ( 2 ) is connected to the temperature-regulating body ( 1 ) in such a way that an inhomogeneous material bond is formed between the plurality of battery cells ( 2 ) and the temperature-regulating body ( 1 ).

9. The method according to claim 8 , wherein the adhesive ( 3 ) in a first region ( 51 ) is applied in such a way that a first proportion ( 41 ) of the at least one first component ( 31 ) is higher than a second proportion ( 42 ) of the at least one second component ( 32 ) and the adhesive ( 3 ) in a second region ( 52 ) is applied in such a way that the second proportion ( 42 ) of the at least one second component ( 32 ) is higher than the first proportion ( 41 ) of the at least one first component ( 31 ).

10. The method according to claim 8 , wherein the at least one first component ( 31 ) forms a lower adhesive force than the at least one second component ( 32 ) and in that a first region ( 51 ) is arranged closer to a peripheral region ( 6 ) of the temperature-regulating body ( 1 ) or the plurality of battery cells ( 2 ) than a second region ( 52 ).

11. The method according to claim 8 , wherein the adhesive ( 3 ) is applied in a uniformly distributed manner.

12. The method according to claim 8 , wherein the adhesive ( 3 ) is applied with a plurality of portions ( 9 ) which are arranged parallel to one another.

13. The method according to claim 8 , wherein the adhesive ( 3 ) is applied in a continuously running strand ( 9 ).

14. The method according to claim 8 , wherein the at least one first component ( 31 ) and/or the at least one second component ( 32 ) are selected from an epoxy, acrylate, silicone or urea.

Assignees

• Bosch Gmbh Robert

Inventors

• Ringk Andreas
• Ringel Anton

Classifications

• H01M10/04 Primary

  Construction or manufacture in general (H01M10/058, H01M10/12, H01M10/28, H01M10/38 take precedence) · CPC title

• B29C65/52

  characterised by the way of} applying the adhesive {(B29C65/50 takes precedence; apparatus for applying liquids in general B05C; processes for applying liquids in general B05D) · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B7/14

  applied in spaced arrangements, e.g. in stripes · CPC title

• B32B37/1284

  Application of adhesive · CPC title