Battery Cell Pack for a Battery, and Battery

Patent metadata

Field	Value
Publication number	US-2024380059-A1
Application number	US-202218686165-A
Country	US
Kind code	A1
Filing date	Aug 2, 2022
Priority date	Aug 26, 2021
Publication date	Nov 14, 2024
Grant date	—

Abstract

A battery cell pack includes a multiplicity of battery cells arranged next to one another. A multiplicity of frame elements corresponds geometrically to the battery cells. A battery cell is positionally fixed by means of two of the frame elements directly adjacent to each other by the corresponding battery cell being inserted into a battery cell space formed by the two directly adjacent frame elements. An intermediate layer is arranged directly between the respective battery cell and the frame elements, such that the respective battery cell is held in the battery cell space via the intermediate layer. The intermediate layer is elastically compressible, without destruction, by a swelling of the directly adjoining battery cell to a swelling extent, as a result of which, despite the swelling of the corresponding battery cell, a size of the battery cell space and therefore external dimensions of the battery cell pack remain constant.

First claim

1 .- 10 . (canceled)

11 . A battery cell pack comprising:
a multiplicity of battery cells arranged next to one another; a multiplicity of frame elements geometrically corresponding to the battery cells, wherein a battery cell is positionally fixed via two frame elements that are directly adjacent to one another, in that the corresponding battery cell is inserted in a battery cell space formed by the two frame elements that are directly adjacent to one another; wherein, for each battery cell, an intermediate layer is arranged directly between the respective battery cell and the frame elements, with the result that the respective battery cell is held in the battery cell space via the interlayer; and, wherein the interlayer can be non-destructively elastically compressed owing to swelling of the directly adjoining battery cell to a swollen size, as a result of which, in spite of the swelling of the corresponding battery cell, a size of the battery cell space and outer dimensions of the battery cell pack remain constant.

12 . The battery cell pack according to claim 11 , wherein:
the respective battery cell is in the form of a solid-state battery cell.

13 . The battery cell pack according to claim 11 , wherein:
the respective interlayer comprises a material with a Poisson ratio (u) of less than 0.3.

14 . The battery cell pack according to claim 11 , wherein:
the respective interlayer comprises a foamed material.

15 . The battery cell pack according to claim 11 , wherein:
the interlayers are each configured such that an initial pressure of up to 10 bar acts on the respective battery cell when it is not swollen.

16 . The battery cell pack according to claim 11 , further comprising:
two pressing plates and two clamping elements, wherein the pressing plates delimit the battery cell pack along its direction of longitudinal extent and are clamped toward one another along the direction of longitudinal extent via the clamping elements, with the result that the battery cells, frame elements, and interlayers arranged between the pressing plates along the direction of longitudinal extent are clamped together.

17 . The battery cell pack according to claim 11 , wherein:
the frame elements are fastened to one another via a connecting element.

18 . The battery cell pack according to claim 16 , wherein:
the frame elements are fastened to the clamping elements via a further connecting element.

19 . A battery comprising a battery cell pack according to claim 11 .

20 . The battery according to claim 19 , further comprising:
a battery housing comprising a housing bottom part and a housing top part, wherein the battery cell pack and the housing bottom part are adhesively bonded to one another by means of an adhesive bond, and wherein the battery cell pack and the housing top part are adhesively bonded to one another by means of a further adhesive bond.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Loch Robert
• Warkotsch Christoph

Classifications

• H01M50/242

  adapted for protecting batteries against vibrations, collision impact or swelling · CPC title

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M50/293 Primary

  characterised by the material · CPC title