Cell for an electrochemical system, having a flexible electrical cable for tapping off an electrical voltage

Patent metadata

Field	Value
Publication number	US-2021328232-A1
Application number	US-202117230902-A
Country	US
Kind code	A1
Filing date	Apr 14, 2021
Priority date	Apr 15, 2020
Publication date	Oct 21, 2021
Grant date	—

Abstract

The present document relates to a cell for an electrochemical system, comprising two separator plates, a membrane electrode assembly (MEA) arranged between the separator plates, and at least one flexible electrical cable for tapping off an electrical voltage. The separator plates, the MEA and the cable can be compressed with one another, the flexible cable has a first end portion and a second end portion, the first end portion is arranged for fastening between the separator plates, and the second end portion protrudes laterally from the cell.

First claim

1 . A cell for an electrochemical system, comprising:
two separator plates; a membrane electrode assembly (MEA) arranged between the separator plates; and at least one flexible electrical cable for tapping off an electrical voltage; wherein the separator plates, the MEA and the cable are compressed with one another when assembled; wherein the cable has a first end portion and a second end portion; wherein the first end portion is arranged for fastening between the separator plates; wherein the second end portion protrudes laterally from the cell.

2 . The cell according to claim 1 , wherein at least one of the two separator plates has an elevation, facing towards the other separator plate, for fastening the cable, and the first end portion of the cable is arranged between the elevation and the opposite separator plate.

3 . The cell according to claim 2 , wherein each of the two separator plates has an elevation, the two elevations facing towards one another, and the cable is arranged between the elevations.

4 . The cell according to claim 2 , wherein the elevation is configured as a frustoconical embossment.

5 . The cell according to claim 2 , wherein the elevation is provided in an outer edge region of the separator plate.

6 . The cell according to claim 1 , wherein the MEA has at least one frame-like reinforcing layer, the first end portion of the cable adjoining the reinforcing layer.

7 . The cell according to claim 6 , wherein the MEA has two frame-like reinforcing layers, the first end portion being arranged between the reinforcing layers of the MEA.

8 . The cell according to claim 6 , wherein the frame-like reinforcing layer has a cutout, and the first end portion electrically contacts the separator plate in a region of the cutout.

9 . The cell according to claim 1 , wherein the first end portion of the cable is arranged between the MEA and one of the separator plates.

10 . The cell according to claim 1 , wherein the cable has an electrically insulating layer in some regions.

11 . The cell according to claim 1 , wherein the MEA has a projection that protrudes laterally from the cell, the projection forming part of the cable.

12 . The cell according to claim 1 , wherein the cable and the separator plates are made of different materials.

13 . The cell according to claim 1 , wherein the second end portion of the cable is configured for direct or indirect connection to a voltage measuring device for checking an electrical cell voltage.

14 . The cell according to claim 1 , wherein the separator plates, the MEA and the cable can be elastically compressed with one another.

15 . The cell according to claim 1 , wherein the second end portion is spaced apart from the separator plates by an insulated cable portion.

16 . The cell according to claim 1 , wherein the flexible cable is fastened between and/or to the separator plates by a force fit and/or a form fit and is detachable without being destroyed.

17 . The cell according to claim 1 , comprising two flexible electrical cables, the MEA being arranged between the first end portions of the cables, and the first end portions being electrically insulated from one another.

18 . An electrochemical system, comprising a plurality of stacked cells, wherein at least one of the plurality of stacked cells is a cell according to claim 1 .

19 . The electrochemical system according to claim 18 , wherein the second end portions of the cables are electrically and mechanically connected to an interface.

20 . The electrochemical system according to claim 18 , comprising a voltage measuring device for measuring an electrical cell voltage of the respective cells, each cable being directly or indirectly connected to the voltage measuring device by its second end portion.

Assignees

• Reinz Dichtungs Gmbh

Inventors

• Speidel André

Classifications

• H01M8/0273

  with sealing or supporting means in the form of a frame · CPC title

• H01M8/1006 Primary

  Corrugated, curved or wave-shaped MEA · CPC title

• H01M8/0297

  Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other (H01M8/0271 takes precedence) · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M8/0202 Primary

  Collectors; Separators, e.g. bipolar separators; Interconnectors · CPC title