Battery pack

Patent metadata

Field	Value
Publication number	US-2018138564-A1
Application number	US-201715662566-A
Country	US
Kind code	A1
Filing date	Jul 28, 2017
Priority date	Nov 15, 2016
Publication date	May 17, 2018
Grant date	—

Abstract

A battery pack includes a plurality of battery modules that are stackable in a stacking direction, each of the plurality of battery modules extending in a longitudinal direction perpendicular to the stacking direction. Each of the plurality of battery modules includes a battery cell and a cartridge configured to receive the battery cell. The cartridge includes a seat part configured to seat the battery cell, and a heat dissipation part made of a first type of material different from a second type of material of the seat part, the heat dissipation part being configured to absorb heat generated from the battery cell.

First claim

What is claimed is:

1 . A battery pack comprising:
a plurality of battery modules that are stackable in a stacking direction, each of the plurality of battery modules extending in a longitudinal direction perpendicular to the stacking direction, wherein each of the plurality of battery modules includes a battery cell and a cartridge configured to receive the battery cell, and wherein the cartridge includes:
a seat part configured to seat the battery cell, and
a heat dissipation part made of a first type of material different from a second type of material of the seat part, the heat dissipation part being configured to absorb heat generated from the battery cell.

2 . The battery pack of claim 1 , wherein the heat dissipation part is located on the seating part and extends in the longitudinal direction within the cartridge.

3 . The battery pack of claim 1 , wherein the battery cell includes a body and a plurality of cell leads, each of the plurality of cell leads being located at a first side of the body, and
wherein the body has a second side different than the first side, the second side facing the heat dissipation part.

4 . The battery pack of claim 3 , further comprising a bonding member disposed between the second side of the body and the heat dissipation part.

5 . The battery pack of claim 4 , further comprising a thermal pad connected to the heat dissipation part.

6 . The battery pack of claim 1 , wherein the battery cell includes a body, a cathode cell lead, and an anode cell lead, the cathode and anode cell leads being connected to the body, and
wherein the cartridge further includes anti-short members that protrude from the seat part in the stacking direction, the anti-short members being disposed between the cathode cell lead and the anode cell lead based on the cartridge receiving the battery cell.

7 . The battery pack of claim 6 , wherein each of the anti-short members includes:
a locking portion that is located at a first side of the cartridge and that extends in a first direction parallel to the stacking direction, and a locking step that is located at the first side of the cartridge and that extends in a second direction opposite the first direction,
wherein the locking portion is configured to couple to a locking step of an adjacent cartridge based on the adjacent cartridge being stacked next to the cartridge.

8 . The battery pack of claim 7 , wherein the cartridge includes second locking portions and locking grooves, the second locking portions and locking grooves being located at a second side of the cartridge opposite the first side, and
wherein the second locking portions are configured to couple to locking grooves of the adjacent cartridge based on the adjacent cartridge being stacked next to the cartridge.

9 . The battery pack of claim 1 , further comprising:
end plates that are located next to outermost battery modules of the battery pack, the end plates extending in the longitudinal direction perpendicular to the stacking direction; and brackets that couple to the end plates and extend in the stacking direction, the brackets covering outer sides of the plurality of battery modules.

10 . The battery pack of claim 9 , wherein each of the brackets faces an outer side of the seat part of the cartridge.

11 . The battery pack of claim 10 , further comprising bolting portions configured to couple the brackets to the end plates.

12 . The battery pack of claim 9 , further comprising a separator that is disposed between a pair of battery modules within the plurality of battery modules, the separator extending in the longitudinal direction, and
wherein the brackets are configured to couple to the separator.

13 . The battery pack of claim 12 , further comprising bolting portions configured to couple the brackets to the separator.

14 . The battery pack of claim 12 , wherein the separator includes a cartridge locking step that protrudes from an end portion of the separator toward the bracket, the cartridge locking step being configured to couple to the pair of battery modules that are stacked next to each other.

15 . The battery pack of claim 1 , wherein at least a portion of the seat part is coated by the heat dissipation part.

16 . The battery pack of claim 1 , wherein the heat dissipation part includes a first heat dissipation member and a second heat dissipation member that faces the first heat dissipation member, and
wherein a portion of the seat part is disposed between the first and second heat dissipation members.

17 . The battery pack of claim 1 , further comprising a shock-absorbing member disposed between a pair of battery cells within the plurality of battery modules and configured to absorb shock from the pair of battery cells that are stacked next to each other.

18 . The battery pack of claim 6 , wherein the anode cell lead is configured to contact an anode cell lead of an adjacent battery cell based on the battery cell being stacked next to the adjacent battery cell, and
wherein the cathode cell lead is configured to contact a cathode cell lead of the adjacent battery cell based on the battery cell being stacked next to the adjacent battery cell.

19 . A battery pack comprising:
a first plurality of battery modules that are electrically connected to a first ground; a second plurality of battery modules that are electrically connected to a second ground, the second plurality of battery modules being stacked next to the first plurality of battery modules; a separator that is disposed between the first plurality of battery modules and the second plurality of battery modules, the separator being configured to electrically separate the first and second grounds; a bracket that is coupled to the separator and covers a side of each of the first plurality of battery modules and the second plurality of battery modules; a first board assembly is located between the bracket and the side of the first plurality of battery modules; and a second board assembly that is located between the bracket and the side of the second plurality of battery modules, wherein each battery module in the first and second pluralities of battery modules includes a battery cell and a cartridge configured to receive the battery cell, and wherein the cartridge includes:
a seat part configured to seat the battery cell, and
a heat dissipation part made of a first type of material different from a second type of material of the seat part, the heat dissipation part being configured to absorb heat generated from the battery cell.

20 . The battery pack of claim 19 , wherein the separator includes a cartridge locking step that protrudes from an end of the separator toward the bracket, the cartridge locking step being configured to couple to the first and second pluralities of battery modules.

Assignees

• Lg Electronics Inc

Inventors

• KIM Inseok
• Son Ingook

Classifications

• H01M50/593

  Spacers; Insulating plates · CPC title

• H01M50/588

  outside the batteries, e.g. incorrect connections of terminals or busbars · CPC title

• H01M50/291

  characterised by their shape · CPC title

• H01M50/264

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

• H01M50/553

  Terminals adapted for prismatic, pouch or rectangular cells · CPC title