Rechargeable battery for hand-guided electromechanical tools

Patent metadata

Field	Value
Publication number	US-10109836-B2
Application number	US-201314144713-A
Country	US
Kind code	B2
Filing date	Dec 31, 2013
Priority date	Jul 9, 2007
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A rechargeable battery (1) for hand-guided electromechanical tools, having a plurality of rechargeable battery cells (10) which are electrically connected to one another by means of electrical cell connectors (110), wherein the electrical cell connectors (110) are fixed to a cell connection frame (120), which is provided on one pole side (19) of the rechargeable battery cells (10), for the purpose of simplified mounting of the electrical cell connectors (110) on the rechargeable battery cells (10). Furthermore, an electromechanical tool, in particular a cordless screwdriver, a drill, a circular saw, a jigsaw, a sander, a garden appliance, having a rechargeable battery (1) according to the invention.

First claim

What is claimed is:

1. A rechargeable battery for hand-guided electromechanical tools, comprising:
a plurality of rechargeable battery cells electrically connected to one another via electrical cell connectors, wherein the electrical cell connectors include:
two curved transitional portions; and
a straight portion disposed between, and connecting, the two curved transitional portions,
wherein, for mounting of the electrical cell connectors on the plurality of rechargeable battery cells, the electrical cell connectors are fixedly connected to a cell connection frame by injection-molding the cell connection frame to the electrical cell connectors to form an integrated component,
wherein the cell connection frame entirely surrounds an uppermost side of the straight portion of the electrical cell connectors.

2. The rechargeable battery as defined by claim 1 , wherein electrical contact portions of the electrical cell connectors are provided on or in through recesses of the cell connection frame or protrude at least partway into them, and a through recess is disposed on/above one pole of a rechargeable battery cell of the plurality of rechargeable battery cells.

3. The rechargeable battery as defined by claim 1 , wherein a contact portion adjoining the curved transitional portions is disposed on a pole of a rechargeable battery cell of the plurality of rechargeable battery cells.

4. The rechargeable battery as defined by claim 1 , wherein one side, which is oriented toward the plurality of rechargeable battery cells, of the cell connection frame has protrusions and/or recesses, by means of which the cell connection frame is positioned on the plurality of rechargeable battery cells.

5. The rechargeable battery as defined by claim 1 , wherein the cell connection frame is locked to at least one rechargeable battery cell of the plurality of rechargeable battery cells and/or a housing of the rechargeable battery.

6. The rechargeable battery as defined by claim 1 , wherein the electrical cell connectors is provided with one portion inside the cell connection frame.

7. The rechargeable battery as defined by claim 1 , wherein one portion of at least one of the electrical cell connectors is flush with a surface of the cell connection frame which is situated away from the pluraility of rechargeable battery cells.

8. The rechargeable battery as defined by claim 1 , wherein the cell connection frame is embodied in one piece.

9. The rechargeable battery as defined by claim 1 , wherein the cell connection frame has through recesses, on or in which contact portions of the electrical cell connectors are disposed.

10. The rechargeable battery as defined by claim 9 , wherein the through recesses are on or above poles of the plurality of rechargeable battery cells.

11. The rechargeable battery as defined by claim 1 , wherein the curved transitional portions are adapted to allow the contact portions of the electrical cell connectors to be seated resiliently on poles of the plurality of rechargeable battery cells.

12. The rechargeable battery as defined by claim 11 , wherein the curved transitional portions guide the contact portions of the electrical cell connectors in a region below an underside of the cell connection frame.

13. The rechargeable battery as defined by claim 9 , wherein the contact portions of the electrical cell connectors protrude into the through recesses such that the contact portions are disposed within an outer boundary of the cell connection frame.

14. The rechargeable battery as defined by claim 1 , wherein the cell connection frame includes a fastening portion configured to position the cell connection frame on the plurality of rechargeable battery cells, said fastening portion is formed in one piece with the cell connection frame.

15. The rechargeable battery as defined by claim 1 , wherein the cell connection frame includes at least one protrusion configured to position the cell connection frame on the plurality of rechargeable battery cells, said protrusion being disposed on a side of the cell connection frame that faces toward poles of the plurality of rechargeable battery cells.

16. The rechargeable battery as defined by claim 1 , wherein the cell connection frame includes at least one recess configured to position the cell connection frame on the plurality of rechargeable battery cells, said recess being disposed on a side of the cell connection frame that faces toward poles of the plurality of rechargeable battery cells.

17. The rechargeable battery as defined by claim 1 , wherein the electrical cell connectors are injection-molded to the cell connection frame such that a portion of at least one of the electrical cell connectors is embedded in the cell connection frame.

18. The rechargeable battery as defined by claim 1 , wherein the electrical cell connectors are injection-molded to the cell connection frame such that a bare portion of at least one of the electrical cell connectors is disposed on an outside of the cell connection frame.

19. The rechargeable battery as defined by claim 1 , wherein the cell connection frame has side faces which protrude beyond the plurality of rechargeable battery cells.

20. The rechargeable battery as defined by claim 1 , wherein at least a portion of the cell connection frame is provided on a pole side of the plurality of rechargeable battery cells.

Assignees

• Bosch Gmbh Robert

Inventors

• Zahn Wolf

Classifications

• H01M50/516 Primary

  by welding, soldering or brazing · CPC title

• H01M50/524

  Organic material · CPC title

• H01M50/503

  characterised by the shape of the interconnectors · CPC title

• H01M2/08

  Electricity · mapped topic

• H01M2/204 Primary

  Electricity · mapped topic