Battery module with battery cell system and enclosure

Patent metadata

Field	Value
Publication number	US-2018175346-A1
Application number	US-201715841541-A
Country	US
Kind code	A1
Filing date	Dec 14, 2017
Priority date	Dec 15, 2016
Publication date	Jun 21, 2018
Grant date	—

Abstract

A battery module ( 100 ) comprising at least one battery cell system ( 1 ) having at least two battery cells ( 11 ), wherein the battery cell system ( 1 ) comprises a pouch film ( 3 ) and at least two electrode composites ( 5 ), wherein an electrode composite ( 5 ) comprises at least one anode and at least one cathode, and wherein the pouch film ( 3 ) forms pockets ( 12 ) separated from one another, in particular situated alongside one another, for introducing respectively at least one electrode composite ( 5 ), such that each pocket ( 12 ) together with electrode composite ( 5 ) forms a pouch cell ( 10 ), and wherein the pockets ( 12 ) are connected to one another physically in a foldable manner via the pouch film ( 3 ) and wherein the battery module ( 100 ) has a movement-flexible, foldable enclosure ( 20 ), which encloses the entire battery cell system ( 1 ) and the voltage tap of the battery module ( 100 ).

First claim

1 . A battery module ( 100 ) comprising at least one battery cell system ( 1 ) having at least two pouch cells ( 10 ), characterized in that the battery cell system ( 1 ) comprises a pouch film ( 3 ) and at least two electrode composites ( 5 ), wherein an electrode composite ( 5 ) comprises at least one anode and at least one cathode, and wherein the pouch film ( 3 ) forms pockets ( 12 ) separated from one another for introducing respectively at least one electrode composite ( 5 ), such that each pocket ( 12 ) together with electrode composite ( 5 ) forms a pouch cell ( 10 ), and wherein the pockets ( 12 ) are connected to one another physically in a foldable manner via the pouch film ( 3 ) and wherein the battery module ( 100 ) has a movement-flexible, foldable enclosure ( 20 ), which encloses the entire battery cell system ( 1 ) and a voltage tap of the battery module ( 100 ).

2 . The battery module ( 100 ) according to claim 1 , characterized in that the enclosure ( 20 ) is a composite film comprising an aluminum.

3 . The battery module ( 100 ) according to claim 1 , characterized in that the enclosure ( 20 ) bears against the battery cell system ( 1 ) with the voltage tap as a result of a reduced pressure generated.

4 . The battery module ( 100 ) according to claim 1 , characterized in that the enclosure ( 20 ) adheres to the battery cell system ( 1 ) by means of an adhesive.

5 . The battery module ( 100 ) according to claim 1 , characterized in that the enclosure ( 20 ) is a shrink film.

6 . The battery module ( 100 ) according to claim 1 , characterized in that the enclosure ( 20 ) comprises a drying agent.

7 . The battery module ( 100 ) according to claim 1 , characterized in that ends of the enclosure ( 20 ) are sealed or welded to one another for sealing purposes.

8 . The battery module ( 100 ) according to claim 1 , characterized in that anode contact lugs ( 7 ) of the anode and cathode contact lugs ( 8 ) of the cathode in each case on the same side of the pockets ( 12 ) of the pouch cells, or on mutually opposite sides of the pockets ( 12 ) of the pouch cells, project beyond the pocket ( 12 ).

9 . The battery module ( 100 ) according to claim 1 , characterized in that the pouch film ( 3 ) is folded in each case between the interlinked pouch cells ( 10 ) arranged in the battery module ( 100 ).

10 . The battery module ( 100 ) according to claim 1 , characterized in that the contact lugs ( 7 , 8 ) of in each case two pouch cells ( 10 ) of the same battery cell system ( 1 a , 1 b ), said pouch cells being situated alongside one another, face toward one another and are electrically connected to one another, and in that the pouch film ( 3 ) and has a fold after each pouch cell ( 10 ) of the battery system ( 1 ).

11 . The battery module ( 100 ) according to claim 1 , characterized in that a respective anode contact lug ( 7 ) of a first battery cell system ( 1 a ) is electrically contacted with a cathode contact lug ( 8 ) of a second battery cell system ( 1 b ) situated opposite, and a respective anode contact lug ( 7 ) of the second battery cell system ( 1 b ) is electrically contacted with a cathode contact lug ( 8 ) of a first battery cell system ( 1 a ) situated opposite.

12 . The battery module ( 100 ) according to claim 12 , characterized in that the first battery cell system ( 1 a ) and the second battery cell system ( 1 b ) are folded in such a way that the anode contact lugs ( 7 ) and the cathode contact lugs ( 8 ) of the electrode composites ( 5 ) and the voltage tap face upward and those sides of the electrode composites ( 5 ) of the battery cell systems ( 1 a , 1 b ) which are situated respectively opposite the contact lugs ( 7 , 8 ) are folded downward toward one another.

13 . The battery module ( 100 ) according to claim 1 comprising at least four battery cell systems ( 1 a , 1 b , 1 c , 1 d ), characterized in that the first and second battery cell systems ( 1 a , 1 b ) are physically connected to the third and fourth battery cell systems ( 1 c , 1 d ) via a flexible cell connector ( 22 ).

14 . The battery module according to claim 13 , characterized in that the third and fourth battery cell systems ( 1 c , 1 d ) are folded about a vertical axis at the flexible cell connector ( 22 ), such that the first battery cell system ( 1 a ) and the third battery cell system ( 1 c ) bear against one another.

15 . The battery module ( 100 ) according to claim 1 , characterized in that the battery module ( 100 ) comprises at least one L-shaped cooling plate ( 57 ).

16 . The battery module ( 100 ) according to claim 15 , characterized in that the L-shaped, cooling plate ( 57 ) comprises an aluminum, a carbon and/or a copper.

17 . A method for producing a battery module according to claim 1 comprising at least one battery cell system ( 1 ), wherein a movement-flexible enclosure ( 20 ) is fitted around the at least one battery cell system ( 1 ) and around the voltage tap ( 22 ) of the battery module ( 100 ), in particular by sealing, adhesive bonding, welding, and/or shrink fitting of the enclosure ( 20 ).

18 . The battery module ( 100 ) according to claim 1 , wherein the pouch film ( 3 ) forms pockets ( 12 ) separated from one another and situated alongside one another, and wherein, in the operating state of the battery module ( 100 ), the pockets ( 12 ) are connected to one another physically in a foldable manner via the pouch film ( 3 ).

19 . The battery module ( 100 ) according to claim 1 , characterized in that the enclosure ( 20 ) bears against the battery cell system ( 1 ) with the voltage tap as a result of a vacuum generated.

20 . The battery module ( 100 ) according to claim 1 , characterized in that anode contact lugs ( 7 ) of the anode and cathode contact lugs ( 8 ) of the cathode in each case on the same side of the pockets ( 12 ) of the pouch cells, in a manner offset with respect to one another, or on mutually opposite sides of the pockets ( 12 ) of the pouch cells, project beyond the pocket ( 12 ).

21 . The battery module ( 100 ) according to claim 1 , characterized in that the pouch film ( 3 ) and the enclosure ( 20 ) are folded in each case between the interlinked pouch cells ( 10 ) arranged in the battery module ( 100 ), in a zigzag fold, such that a fold is present after each pouch cell ( 10 ).

22 . The battery module ( 100 ) according to claim 1 , characterized in that the contact lugs ( 7 , 8 ) of in each case two pouch cells ( 10 ) of the same battery cell system ( 1 a , 1 b ), said pouch cells being situated alongside one another, face toward one another and are electrically connected to one another, and in that the pouch film ( 3 ) and the enclosure ( 20 ) of the battery module ( 100 ) have a fold after each pouch cell ( 10 ) of the battery system ( 1 ).

23 . The battery module ( 100 ) according to claim 1 , characterized in that the battery module ( 100 ) comprises at least one L-shaped cooling plate ( 57 ) which is arranged between the folded pouch cells ( 10 ) after each fold, and which is situated within the enclosure ( 20 ).

24 . The battery module ( 100 ) according to claim 23 , characterized in that the L-shaped cooling plate ( 57 ) comprises an aluminum plate, a carbon and/or a copper.

25 . A method for producing a battery module according to claim 1 comprising at least one battery cell system ( 1 ), wherein a

Assignees

• Bosch Gmbh Robert

Inventors

• Schmid-Schoenbein Christian

Classifications

• H01M10/647

  Prismatic or flat cells, e.g. pouch cells · CPC title

• H01M10/6554

  Rods or plates · CPC title

• H01M2220/10

  Batteries in stationary systems, e.g. emergency power source in plant · CPC title

• H01M10/625 Primary

  Vehicles · CPC title

• H01M10/6555 Primary

  arranged between the cells · CPC title