Battery module

Patent metadata

Field	Value
Publication number	US-2020365844-A1
Application number	US-202015931327-A
Country	US
Kind code	A1
Filing date	May 13, 2020
Priority date	May 14, 2019
Publication date	Nov 19, 2020
Grant date	—

Abstract

A battery module includes a cell unit, including a plurality of battery cells disposed on both surfaces of a unit plate, and a case accommodating the cell unit. The unit plate includes a plurality of receiving spaces, in which the plurality of battery cells are disposed, and a connection member disposed. between the receiving spaces to electrically connect the battery cells to each other.

First claim

What is claimed is:

1 . A battery module comprising:
a cell unit including a plurality of battery cells disposed on both surfaces of a unit plate; and a case accommodating the cell unit, wherein the unit plate comprises: a plurality of receiving spaces in which the plurality of battery cells are disposed; and a connection member disposed between the receiving spaces to electrically connect the battery cells to each other.

2 . The battery module or claim l, wherein the connection member comprises:
a busbar formed of a conductive material and spaced apart from the unit plate; and a bracket formed of an insulating material and disposed along a circumference of the busbar to be in contact with the unit plate when the connection member is coupled to the unit plate.

3 . The battery module of claim 2 , wherein the busbar has both surfaces exposed outwardly of the bracket, and
the plurality of battery cells are connected to both surfaces of the bracket, respectively.

4 . The battery module of claim 2 , wherein the unit plate has a plate portion, having a flat surface, and a side portion protruding upwardly and downwardly of the plate portion from both sides of the plate portion, and
the plurality of receiving spaces are formed by the plate portion and the side portion.

5 . The battery module of claim 1 , further comprising:
an external side connection member disposed on an end portion of the unit plate to be electrically connected to the battery cell.

6 . The battery module or claim 5 , wherein the external side connection member includes a coupling terminal protruding outwardly of the unit plate to be used in an electrical connection to another cell unit.

7 . The battery module of claim 4 , further comprising:
a circuit board coupled to the unit plate to sense a voltage of the battery cells or to measure a temperature of the battery cells.

8 . The battery module of claim 7 , wherein the circuit board is formed as a flexible printed circuit board (FPCB) to electrically connect the busbar to an external entity.

9 . The battery module of claim 7 , wherein in the circuit board, a portion disposed in the receiving space is attached to an internal side surface of the side portion and is formed to have a width less than a width of the side portion.

10 . The battery module of claim 7 , wherein the circuit board further includes a temperature sensor disposed to be in contact with the battery cell.

11 . A battery module comprising:
a cell assembly in which cell units, including a plurality battery cells, are stacked; and a case accommodating the cell assembly, wherein the cell assembly includes a coupling unit disposed between the stacked cell units to integrally fix the cell units to each other.

12 . The battery module of claim 11 , wherein the coupling unit comprises:
a frame in which an empty space is formed; and a support portion coupled to both ends of the frame to support the cell unit, and wherein the cell unit is provided in the empty space of the frame.

13 . The battery module of claim 12 , wherein the cell unit includes a plurality of accommodation spaces, in which the plurality of battery cells are disposed, and a connection member disposed between the plurality of accommodation spaces to electrically battery cells to each other, and
wherein the support portion includes a first support portion, disposed between both end portions of the cell units, and a second support portion disposed between the connection members of the cell units.

14 . The battery module of claim 13 , wherein the support portion has a plurality of protrusions inserted into the cell unit, coupled to an upper portion or the support portion, to define a coupled location to the cell unit.

15 . The battery module of claim 13 , wherein the coupling unit includes a plurality of frames, and
the second support portion configured to be coupled to and separated from a second support portion of another frame.

16 . The battery module of claim 13 , wherein each of the cell units includes coupling terminals, respectively disposed on both end portions thereof, and
the coupling terminals are coupled to the first support portion to be electrically connected to each other.

17 . The battery module of claim 11 , wherein the cell unit has a fastening groove disposed between the accommodation spaces and formed in such a manner that a width of the cell unit reduced.

18 . The battery module of claim 17 , wherein the case includes a first plate disposed above the cell unit, a second plate disposed below the cell unit, and a third plate disposed on a side portion of the cell unit, and
a pipe-shaped fastening portion, disposed to be inserted into the fastening groove, is provided on an internal surface or the third plate.

19 . The battery module of claim 18 , further comprising:
a fastening member sequentially penetrating through the first plate, the fastening portion of the third plate, and the second plate to be coupled thereto.

20 . The battery module of claim 18 , wherein the third plate has a cooling flow path.

Assignees

• Sk Innovation Co Ltd

Inventors

• Jeon Hae Ryong
• Lee Seok Hwan
• Ju Seung Hoon
• Choi Ha Neul

Classifications

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• H01M10/486

  for measuring temperature · CPC title

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M50/284

  with incorporated circuit boards, e.g. printed circuit boards [PCB] · CPC title

• H01M50/264

  for cells or batteries, e.g. straps, tie rods or peripheral frames · CPC title