Current collector for an energy storage arrangement, energy storage arrangement, in particular for a motor vehicle, and motor vehicle

Patent metadata

Field	Value
Publication number	US-2017048978-A1
Application number	US-201615235949-A
Country	US
Kind code	A1
Filing date	Aug 12, 2016
Priority date	Aug 14, 2015
Publication date	Feb 16, 2017
Grant date	—

Abstract

A current collector for an energy storage arrangement, includes a busbar having a busbar section and multiple contact sections for electrically conductive connection with a respective end side terminal connection of an energy storage, each of the multiple contact sections having a fastening region and a safety region, wherein the fastening region are configured for fastening the terminal connection of the energy storage on the contact sections, and wherein the safety region is encased by a surface layer and is configured to interrupt the electrically conductive connection when a current flowing through the safety region exceeds a current threshold value.

First claim

What is claimed is:

1 . A current collector for an energy storage arrangement, said current collector comprising:
a busbar having a busbar section and multiple contact sections for electrically conductive connection with a respective end side terminal connection of an energy storage, each said multiple contact sections having a fastening region and a safety region, said fastening region being configured for fastening the terminal connection of the energy storage on the contact sections, said safety region being encased by a surface layer and configured to interrupt the electrically conductive connection when a current flowing through the safety region exceeds a current threshold value.

2 . The current collector of claim 1 , wherein the surface layer partially or completely covers the busbar section.

3 . The current collector of claim 1 , wherein on a side adjoining the safety regions the surface layer covers sections of a side of the fastening regions.

4 . The current collector of claim 1 , further comprising a cover element formed on the surface layer for each contact section, said cover element at least partially covering the end side of the energy storage.

5 . The current collector of claim 1 , further comprising a further busbar provided on a side of the terminal connection and being electrically insulatingly arranged on the busbar, said further busbar having multiple contact elements, with at least one of the contact elements being fastenable on a housing of the energy storage and assigned to the contact sections.

6 . The current collector of claim 5 , wherein the surface layer extends between the busbar and the further busbar for insulating the and the further busbars against each other.

7 . The current collector of claim 5 , wherein the surface layer additionally covers sections of the second busbar.

8 . The current collector of claim 5 , further comprising a shielding element for each contact section, said shield element being formed on the surface layer and separating the contact section from the at least one contact element.

9 . The current collector of claim 1 wherein the surface layer is formed by laminating or injection molding.

10 . The current collector of claim 1 , wherein the surface layer is made of a plastic material.

11 . The current collector of claim 1 , wherein the contact sections are each configured as a metal tab which protrudes from the busbar section.

12 . The current collector of claim 1 , wherein the contact sections are deformable for pressing the contact sections on a respective one of the energy storage to be fastened on a respective one of the contact sections.

13 . The current collector of claim 1 , wherein the contact sections are offset in a direction of the terminal connections when viewed in cross section.

14 . The current collector of claim 1 , wherein the busbar has a through opening for each of the contact sections for passage therethrough of a fastening tool into proximity of the end side of the energy storage.

15 . An energy storage arrangement, comprising:
multiple energy storages, each having a terminal connection and a housing, said terminal connection being arranged at a respective end side of the energy storages and lying on an electrostatic potential of a first terminal, said housing lying on an electrostatic potential of a second terminal; a first busbar arranged at the end side of the energy storages, said first busbar having a busbar section and multiple contact sections, each said multiple contact sections having a fastening region and a safety region, said fastening region being electrically conductively fastened on the terminal connection of respective ones of the energy storages to form an electrically conductive connection between the first busbar and the terminal connection, said safety region being encased by a surface layer and configured to interrupt the electrically conductive connection when a current flowing through the safety region exceeds a current threshold value; and a second busbar arranged on the end side of the energy storages and electrically insulatingly arranged on the first busbar, said second busbar having multiple contact elements, with at least one of the contact elements being electrically conductively fastened to a respective one of the energy storages.

16 . The energy storage arrangement of claim 15 , wherein the energy storages are fastened on the fastening regions and/or on the contact elements by means of a welding connection.

17 . The energy storage arrangement of claim 15 , wherein the housing of each of the energy storages is configured cup-shaped and has a cylindrical outer shape.

18 . A motor vehicle, comprising:
at least one energy storage arrangement, said at least one energy storage arrangement comprising multiple energy storages, each having a terminal connection and a housing, said terminal connection being arranged at a respective end side of the energy storages and lying on an electrostatic potential of a first terminal, said housing lying on an electrostatic potential of a second terminal; a first busbar arranged at the end side of the energy storages, said first busbar having a busbar section and multiple contact sections, each said multiple contact sections having a fastening region and a safety region, said fastening region being electrically conductively fastened on the terminal connection of respective ones of the energy storages to form an electrically conductive connection between the first busbar and the terminal connection, said safety region being encased by a surface layer and configured to interrupt the electrically conductive connection when a current flowing through the safety region exceeds a current threshold value; and a second busbar arranged on the end side of the energy storages and electrically insulatingly arranged on the first busbar, said second busbar having multiple contact elements, with at least one of the contact elements being electrically conductively fastened to a respective one of the energy storages.

Assignees

• Audi Ag

Inventors

• Fees Heiner
• Maisch Ralf

Classifications

• H01G11/72 Primary

  specially adapted for integration in multiple or stacked hybrid or EDL capacitors · CPC title

• H01M50/516

  by welding, soldering or brazing · CPC title

• H01M50/583

  in response to current, e.g. fuses · CPC title

• H01M50/507

  comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules · CPC title

• H01M50/548

  on opposite sides of the cell · CPC title