Battery cell stack spacer

Patent metadata

Field	Value
Publication number	US-2022115733-A1
Application number	US-202117450052-A
Country	US
Kind code	A1
Filing date	Oct 5, 2021
Priority date	Oct 9, 2020
Publication date	Apr 14, 2022
Grant date	—

Abstract

In a battery cell stack spacer compensating a thickness deviation of a stack of battery cells, the battery cell stack spacer includes: a first carrier member providing planar support to a base side of a battery cell; a second carrier member providing planar support to a base side of a further battery cell; one or more tolerance compensation sheets sandwiched between the first carrier member and the second carrier member.

First claim

What is claimed is:

1 . A battery cell stack spacer compensating a thickness deviation of a stack of battery cells, the battery cell stack spacer comprising:
a first carrier member providing planar support to a base side of a battery cell; a second carrier member providing planar support to a base side of a further battery cell; one or more tolerance compensation sheets sandwiched between the first carrier member and the second carrier member.

2 . The battery cell stack spacer of claim 1 , wherein at least one of the one or more tolerance compensation sheets has a lower rigidity than each of the first and second carrier members.

3 . The battery cell stack spacer of claim 1 , wherein at least one of the one or more tolerance compensation sheets comprises polyethylene terephthalate (PET).

4 . The battery cell stack spacer of claim 1 , wherein a side of the first carrier member facing the one or more tolerance compensation sheets, sides of each of the one or more tolerance compensation sheets, and a side of the second carrier member facing the one or more tolerance compensation sheets are congruent to each other and are assembled form-fitting in the battery cell stack.

5 . The battery cell stack spacer of claim 1 ,
wherein the one or more tolerance compensation sheets each comprise one or more holes; wherein the first carrier member comprises one or more bolts, the bolts being arranged on the first carrier member such that each bolt projecting from the first carrier member penetrates, for each of the one or more tolerance compensation sheets, through one of the holes in the one or more tolerance compensation sheets.

6 . The battery cell stack spacer of claim 5 , wherein the second carrier member comprises one or more bolts on the second carrier member such that each bolt projecting from the second carrier member penetrates, for each of the one or more tolerance compensation sheets, through one of the holes in the one or more tolerance compensation sheets.

7 . The battery cell stack spacer of claim 6 , wherein for each bolt arranged on the first carrier member or the second carrier member, a recess or depression is formed in the respective opposite carrier member at a position opposite to the bolt.

8 . The battery cell stack spacer of claim 5 ,
wherein each of the one or more tolerance compensation sheets has a rectangular shape; wherein each of the tolerance compensation sheets has four holes, each of the holes being placed in a corner of the respective tolerance compensation sheet; and wherein each of the bolts and/or each of the recesses or depressions is on the respective carrier member at a position corresponding to one of the four holes of the tolerance compensation sheets being sandwiched between the first and second carrier members.

9 . The battery cell stack spacer of claim 1 , further comprising:
a first thermal insulating layer on a side of the first carrier member opposite the one or more tolerance compensation sheets.

10 . The battery cell stack spacer of claim 1 , further comprising:
a second thermal insulating layer on a side of the second carrier member opposite the one or more tolerance compensation sheets.

11 . The battery cell stack spacer of claim 9 , wherein at least one of the thermal insulating layers has a lower heat conductivity and/or a higher temperature resistance than the carrier member the at least one of the thermal insulating layers is on.

12 . The battery cell stack spacer of claim 9 , wherein at least one of the thermal insulating layers is an electrical insulator.

13 . A battery comprising a battery cell stack, wherein the battery cell stack comprises a plurality of battery cells and at least one battery cell stack spacer according to claim 1 .

14 . A vehicle comprising the battery of claim 13 .

15 . A method of assembling a battery cell stack, the battery cell stack comprising a plurality of battery cells and a battery cell stack spacer of claim 1 , the method comprising:
determining the thickness deviation of the battery cell stack from a predefined set-value, the predefined set-value being larger than the thickness of the battery cell stack; assembling the cell stack spacer such that the thickness of the battery cell stack spacer corresponds to the thickness deviation; selecting a first sub-stack of aligned battery cells and a second sub-stack of aligned battery cells, the first sub-stack either comprising zero battery cells, or comprising, counted from one end of the battery cell stack, only the first battery cell or each battery cell from the first battery cell to a further battery cell behind the first battery cell, and the second sub-stack comprising each of the remaining battery cells; inserting the battery cell stack spacer between the first sub-stack of aligned battery cells and the second sub-stack of aligned battery cells.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Binder Daniel

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/293 Primary

  characterised by the material · CPC title

• H01M10/658

  by thermal insulation or shielding · CPC title

• H01M50/244

  Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method · CPC title