Electrical energy storage module and method for producing an electrical energy storage module

Patent metadata

Field	Value
Publication number	US-9570729-B2
Application number	US-201214366926-A
Country	US
Kind code	B2
Filing date	Oct 29, 2012
Priority date	Dec 19, 2011
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

The invention relates to an electrical energy storage module, comprising at least one storage cell stack ( 7 ) that has a plurality of groups of first planar parallel energy storage cells ( 1 ), each having first electrode elements ( 1 a ), and a plurality of groups of second planar parallel energy storage cells ( 2 ) arranged planar parallel to the group of first energy storage cells ( 1 ), said second groups each having second electrode elements ( 2 a ). The groups of first and second energy storage cells ( 1; 2 ) are arranged alternately along a first direction of extension of the storage cell stack ( 7 ) and the first electrode elements ( 1 a ) have a polarity on a side face of the storage cell stack ( 7 ) that is different from the second electrode elements ( 2 a ) on the side face of the storage cell stack ( 7 ). The energy storage module further comprises a plurality of flat contact elements ( 5 ) that are arranged on the side faces of the storage cell stack ( 7 ), galvanically connect adjacent groups of first and second energy storage cells ( 1; 2 ), and contact substantially all first or second electrode elements ( 1 a ; 2 a ) of the adjacent groups of first and second energy storage cells ( 1; 2 ) across the width of the storage cell stack ( 7 ) in each case.

First claim

The invention claimed is:

1. An electrical energy storage module ( 20 ), comprising:
at least one storage cell stack ( 7 ) which has oppositely-facing end faces and a plurality of side faces connecting the end faces, the storage cell stack ( 7 ) further including:
a plurality of groups of first planar-parallel energy storage cells ( 1 ) which each have first electrode elements ( 1 a ), and
a plurality of groups of second planar-parallel energy storage cells ( 2 ) which are arranged planar-parallel to the plurality of groups of first planar-parallel energy storage cells ( 1 ) and each have second electrode elements ( 2 a ),
wherein the plurality of groups of first and second planar-parallel energy storage cells ( 1 ; 2 ) are arranged alternately along a first direction of extent of the storage cell stack ( 7 ) from one of the oppositely-facing end faces to the other of the oppositely-facing end faces, and
wherein the first electrode elements ( 1 a ) impart to a first side face of the plurality of side faces of the storage cell stack ( 7 ) a different polarity from a polarity imparted to the first side face by the second electrode elements ( 2 a ); and
a plurality of planar contact elements ( 5 ) which are arranged on the first side face and on a second side face of the plurality of side faces of the storage cell stack ( 7 ) and which galvanically connect adjacent groups of first and second planar-parallel energy storage cells ( 1 ; 2 ) and which essentially contact all the first or second electrode elements ( 1 a ; 2 a ) of the adjacent groups of first and second planar-parallel energy storage cells ( 1 ; 2 );
a first planar pole terminal ( 6 b ) which makes electrical contact with first electrode elements ( 1 a ) of a group of first planar-parallel energy storage cells ( 1 ) arranged at a first end face of the storage cell stack ( 7 ); and
a second planar pole terminal ( 6 a ) which makes electrical contact with second electrode elements ( 2 a ) of a group of second planar-parallel energy storage cells ( 2 ) arranged at a second end face of the storage cell stack ( 7 ),
wherein the first planar pole terminal ( 6 b ) and the second planar pole terminal ( 6 a ) are made to extend parallel to one another and adjacent to one another along the first side face of the storage cell stack ( 7 ).

2. An electrical energy storage module ( 30 ) comprising: two storage cell stacks ( 7 a ; 7 b ), each storage cell stack ( 7 a ; 7 b ) having oppositely-facing end faces and a plurality of side faces connecting the end faces, the two storage cell stacks ( 7 a ; 7 b ) adjoining one another at a first side face of one of the two storage cell stacks ( 7 a ) and at a first side face of the other of the two storage cell stacks ( 7 b ), each storage cell stack ( 7 a ; 7 b ) further including:
a plurality of first planar-parallel energy storage cells ( 1 ) which each has first electrode elements ( 1 a ), and
a plurality of second planar-parallel energy storage cells ( 2 ) which are arranged planar-parallel to the first planar-parallel energy storage cells ( 1 ) and each has second electrode elements ( 2 a ),
wherein the plurality of first and second planar-parallel energy storage cells ( 1 ; 2 ) are arranged alternately along a first direction of extent of the storage cell stack ( 7 a ; 7 b ) from one of the oppositely-facing end faces to the other of the oppositely-facing end faces, and wherein the first electrode elements ( 1 a ) impart to a first side face of the plurality of side faces of the storage cell stack ( 7 a ; 7 b ) a different polarity from a polarity imparted to the first side face by the second electrode element ( 2 a ); and
a plurality of planar contact elements ( 5 ) which are arranged on the first side face and on a second side face of the plurality of side faces of the storage cell stack ( 7 a ; 7 b ) and which galvanically connect adjacent first and second planar-parallel energy storage cells ( 1 ; 2 ) and which essentially contact all the first or second electrode elements ( 1 a ; 2 a ) of adjacent first and second planar-parallel energy storage cells ( 1 ; 2 );
a first planar pole terminal ( 6 b ) which makes electrical contact with an imparted first polarity of the first electrode elements ( 1 a ) of a first of the plurality of first planar-parallel energy storage cells ( 1 ), the first cell arranged at an end of the electrical energy module ( 30 ), and along the first side face of one of the two storage cell stacks ( 7 a ); and
a second planar pole terminal ( 6 a ) which makes electrical contact with an imparted second polarity of the first electrode elements ( 1 a ) of a first of the plurality of first planar-parallel energy storage cells ( 1 ), the first cell arranged at the end of the electrical energy module ( 30 ), and along the first side face of the other of the two storage cell stacks ( 7 b ),
wherein the first planar pole terminal ( 6 b ) and the second planar pole terminal ( 6 a ) are arranged parallel to one another between the two storage cell stacks ( 7 a ; 7 b ).

3. The electrical energy storage module ( 20 ) as claimed in claim 1 , also comprising:
an insulation layer ( 8 ) which is arranged between the first planar pole terminal ( 6 b ) and the second planar pole terminal ( 6 a ) in order to galvanically insulate the pole terminals ( 6 a ; 6 b ).

4. The electrical energy storage module ( 20 ) as claimed in claim 1 , also comprising:
a housing ( 4 ) which includes the plurality of groups of first planar-parallel energy storage cells ( 1 ), the plurality of groups of second planar-parallel energy storage cells ( 2 ) and the plurality of planar contact elements ( 5 ).

5. The electrical energy storage module ( 20 ) as claimed in claim 4 , wherein the housing ( 4 ) is composed of an electrically non-conductive material.

6. A method ( 40 ) for manufacturing an electrical energy storage module ( 20 ; 30 ), comprising the steps:
providing an alternating arrangement of a plurality of groups of first planar-parallel energy storage cells ( 1 ) which each have first electrode elements ( 1 a ), and a plurality of groups of second planar-parallel energy storage cells ( 2 ) which are arranged planar-parallel with respect to the plurality of groups of first planar-parallel energy storage cells ( 1 ) and each have second electrode elements ( 2 a ), in at least one storage cell stack ( 7 ; 7 a ; 7 b ) along a first direction of extent of the storage cell stack ( 7 ; 7 a ; 7 b ) extending from a first end face to a second end face, the at least one storage cell stack ( 7 ; 7 a ; 7 b ) having a plurality of side faces connecting the first and second end faces, wherein the first electrode elements ( 1 a ) impart to a first side face of the plurality of side faces of the at least one storage cell stack ( 7 ; 7 a ; 7 b ) a different polarity from a polarity imparted to the first side face by the second electrode elements ( 2 a );
providing a plurality of planar contact elements ( 5 ) making contact essentially with all the first or second electrode elements ( 1 a ; 2 a ) of the adjacent groups of first and second planar-parallel energy storage cells ( 1 ; 2 ), the plurality of planar contact elements ( 5 ) being arranged on the first side face and on a second side face of the storage cell stack ( 7 ; 7 a ; 7 b ), the plurality of planar contact elements ( 5 ) galvanically connecting adjacent groups of first and second planar-parallel energy storage cells ( 1 ; 2 ); and
arranging first and second planar pole terminals ( 6 a , 6 b ) in electrical contact with the respective imparted first and second polarities of first or second electrod

Assignees

• Bosch Gmbh Robert

Inventors

• Schmidt Alexander
• Tiefenbach Andy
• Doege Volker
• Kessler Martin

Classifications

• H01M10/0418 Primary

  with bipolar electrodes · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/0472

  Vertically superposed cells with vertically disposed plates · CPC title

• H01M10/18

  with bipolar electrodes · CPC title

• H01M10/052

  Li-accumulators · CPC title