BATTERY MODULE WITH FOIL ARRANGED BETWEEN BATTERY CELLS

1 . A battery module, comprising:

a plurality of battery cells arranged in a plurality of rows and columns; and

foil arranged between two or more adjacent battery cells among the plurality of battery cells.

2 . The battery module of claim 1 ,

wherein the foil is attached to a top of at least one of the two or more adjacent battery cells to fix the two or more adjacent battery cells in place, a

wherein the foil is attached to a bottom of at least one of the two or more adjacent battery cells to fix the two or more adjacent battery cells in place, or

a combination thereof.

3 . The battery module of claim 1 ,

wherein the foil comprises an electrically conductive material, or

wherein the foil comprises an electrically insulative material, or

wherein the foil comprises an electrically conductive material that is coated with an electrically insulative layer.

4 . The battery module of claim 1 , wherein the foil comprises one or more predefined weak points that are configured to be a first part of the foil to break in response to a collision of the battery module.

5 . The battery module of claim 4 , wherein the one or more predefined weak points correspond to one or more perforations defined in the foil.

6 . The battery module of claim 5 , wherein the one or more perforations are defined in the foil via a laser or via ripping.

7 . The battery module of claim 4 , wherein the one or more weak points comprise a plurality of weak points that are staggered at intervals between two ends of the foil.

8 . The battery module of claim 1 , further comprising:

an adhesive that attaches the foil to at least one of the two or more adjacent battery cells.

9 . The battery module of claim 1 , wherein a thickness of the foil is in a range from about 0.01 mm to about 1.00 mm.

10 . The battery module of claim 1 ,

wherein the two or more adjacent battery cells correspond to two or more cylindrical battery cells, and

wherein the foil is arranged as corrugated foil that curves or waves between respective shafts of the two or more cylindrical battery cells.

11 . The battery module of claim 1 , wherein the foil is arranged with at least one collar that at least partially wraps around at least one outer cell rim of at least one of the two or more adjacent battery cells.

12 . The battery module of claim 11 ,

wherein the at least one outer cell rim comprises a top outer cell rim of the at least one battery cell,

wherein the at least one outer cell rim comprises a bottom outer cell rim of the at least one battery cell, or

a combination thereof.

13 . The battery module of claim 11 ,

wherein the foil comprises an electrically insulative material, or

wherein the foil comprises an electrically conductive material that is coated with an electrically insulative layer.

14 . The battery module of claim 1 , wherein the foil is threaded end-to-end between at least one pair of adjacent columns of battery cells.

15 . The battery module of claim 14 ,

wherein the foil is threaded end-to-end between a first pair of adjacent columns of battery cells, and

wherein the foil wraps around one of the adjacent columns in the first pair and is then threaded end-to-end between a second pair of adjacent columns of battery cells.

16 . The battery module of claim 1 , wherein the foil is threaded end-to-end between at least one pair of adjacent rows of battery cells.

17 . The battery module of claim 16 ,

wherein the foil is threaded end-to-end between a first pair of adjacent rows of battery cells, and

wherein the foil wraps around one of the adjacent rows in the first pair and is then threaded end-to-end between a second pair of adjacent rows of battery cells.

18 . The battery module of claim 1 , wherein the foil is threaded end-to-end diagonally across the plurality of rows and columns.

19 . The battery module of claim 18 ,

wherein the foil is threaded end-to-end along a first diagonal path across the plurality of rows and columns, and

wherein the foil wraps around a battery cell along the first diagonal path and is then threaded end-to-end along a second diagonal path across the plurality of rows and columns.

20 . The battery module of claim 1 ,

wherein the foil includes a single piece of foil, or

wherein the foil includes a plurality of separate pieces of foil.