Battery cell comprising a first terminal arranged inside a second terminal

Patent metadata

Field	Value
Publication number	US-10483520-B2
Application number	US-201615735261-A
Country	US
Kind code	B2
Filing date	Jun 3, 2016
Priority date	Jun 11, 2015
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

The invention relates to a battery cell ( 10 ) comprising a first terminal ( 1 ), which is electrically conductively connected to a first electrode, and a second terminal ( 2 ), which is electrically conductively connected to a second electrode, the first terminal ( 1 ) being arranged inside the second terminal ( 2 ). The invention further relates to a battery module ( 200 ) comprising corresponding battery cells ( 10 ), to a battery, to a method for producing the battery module ( 200 ), and to a use for the battery.

First claim

The invention claimed is:

1. A battery cell ( 10 ) having a first terminal ( 1 ) which is electrically conductively connected to a first electrode and a second terminal ( 2 ) which is electrically conductively connected to a second electrode, wherein the first terminal ( 1 ) is arranged within the second terminal ( 2 ), wherein the first terminal ( 1 ) comprises a first screw thread ( 1 a ) and the second terminal ( 2 ) comprises a second screw thread ( 2 a ), wherein the second screw thread is positioned around the first screw thread.

2. The battery cell ( 10 ) as claimed in claim 1 , characterized in that the screw thread ( 1 a ) of the first terminal ( 1 ) is an internal thread and the screw thread ( 2 a ) of the second terminal ( 2 ) is an external thread.

3. The battery cell ( 10 ) as claimed in claim 1 , characterized in that a rotation direction and a pitch of the screw thread ( 1 a ) of the first terminal ( 1 ) and of the screw thread ( 2 a ) of the second terminal ( 2 ) correspond.

4. The battery cell ( 10 ) as claimed in claim 1 , characterized in that a thread starting point of the screw thread ( 1 a ) of the first terminal ( 1 ) and of the screw thread ( 2 a ) of the second terminal ( 2 ) correspond.

5. The battery cell ( 10 ) as claimed in claim 1 , characterized in that one of the first terminal ( 1 ) and the second terminal ( 2 ) comprises aluminum.

6. The battery cell ( 10 ) as claimed in claim 1 , characterized in that the first terminal ( 1 ) and the second terminal ( 2 ) are electrically insulated from one another, at least in a region between the screw threads ( 1 a , 2 a ) of said terminals, by an air gap and/or by an insulator ( 6 ).

7. The battery cell ( 10 ) as claimed in claim 6 , characterized in that the insulator ( 6 ) comprises a plastic.

8. The battery cell ( 10 ) as claimed in claim 6 , characterized in that the insulator ( 6 ) comprises a polyolefin.

9. The battery cell ( 10 ) as claimed in claim 6 , characterized in that the insulator ( 6 ) comprises a polyethylene or a polypropylene.

10. The battery cell ( 10 ) as claimed in claim 1 , characterized in that a degassing valve ( 4 ) is arranged within the first terminal ( 1 ) and/or the second terminal ( 2 ).

11. A battery module ( 200 ) having at least two battery cells ( 10 ) as claimed in claim 1 and a battery module cover ( 117 ) which comprises, for each battery cell ( 10 ), at least two module cover screw threads ( 101 a , 102 a ) for screwing in the battery cells ( 10 ), wherein the at least two module cover screw threads include a first cover screw thread threadably engaged with the first screw thread of the first terminal and a second cover screw thread threadably engaged with the second screw thread of the second terminal.

12. The battery module ( 200 ) as claimed in claim 11 , characterized in that the battery module cover ( 117 ) comprises conductor tracks ( 111 , 112 ) which are sheathed using a plastic.

13. The battery module ( 200 ) as claimed in claim 11 , characterized in that the battery cells ( 10 ) are fixed to one another by a fixing arrangement ( 15 ) which is arranged transverse to a longitudinal axis of the battery cells ( 10 ).

14. The battery module ( 200 ) as claimed in claim 11 , characterized in that the battery module cover ( 117 ) comprises a degassing channel ( 104 ) and/or an electronics system for cell monitoring.

15. A method for producing a battery module ( 200 ) as claimed in claim 11 , characterized in that the first terminal ( 1 ) and the second terminal ( 2 ) are screwed into in each case one module cover screw thread ( 101 a , 102 a ) of the battery module cover ( 117 ) in synchronism with one another, wherein the at least two module cover screw threads include a first cover screw thread threadably engaged with the first screw thread of the first terminal and a second cover screw thread threadably engaged with the second screw thread of the second terminal.

16. The battery module ( 200 ) as claimed in claim 11 , characterized in that the battery cells ( 10 ) are round battery cells, and in that the battery cells ( 10 ) are fixed to one another by a fixing arrangement ( 15 ) which is arranged transverse to a longitudinal axis of the battery cells ( 10 ).

17. A battery comprising a battery module ( 200 ) as claimed in claim 11 .

18. A battery comprising a battery cell ( 10 ) as claimed in claim 1 .

19. A vehicle comprising a battery as claimed in claim 18 , wherein the vehicle is an electric vehicle, a hybrid vehicle or a plug-in hybrid vehicle.

20. The battery cell ( 10 ) as claimed in claim 1 , wherein a thread length of the screw thread ( 1 a ) of the first terminal ( 1 ) and of the screw thread ( 2 a ) of the second terminal ( 2 ) correspond.

Assignees

• Bosch Gmbh Robert

Inventors

• Wagner Christian
• Greiner Daniel Bernd
• Riedmann Matthias
• Kohn Peter
• Hafenbrak Robert

Classifications

• H01M50/502 Primary

  Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing · CPC title

• H01M10/0422

  Cells or battery with cylindrical casing · CPC title

• H01M2220/20

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

• H01M2/1083

  Electricity · mapped topic

• H01M2/12

  Electricity · mapped topic