Battery module housing having easily reusable recyclable, and reworkable adhesion structure and battery module comprising same

Patent metadata

Field	Value
Publication number	US-12176504-B2
Application number	US-202318166274-A
Country	US
Kind code	B2
Filing date	Feb 8, 2023
Priority date	Jan 17, 2018
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

A battery module housing includes a top plate and a bottom plate forming an upper wall and a lower wall, respectively, and a first side plate and a second side plate forming side walls, respectively, the battery module housing having a rectangular tube shape provided to accommodate battery cells in an inner space thereof, wherein the battery module housing has four bonding portions each including an adhesive along a longitudinal direction, the bonding portions located at two sites between opposing side edges of the top plate and top surfaces of the first side plate and second side plate, respectively, and at two sites between opposing side edges of the bottom plate and bottom surfaces of the first side plate and second side plate, respectively.

First claim

What is claimed is:

1. A battery module housing comprising:
a top plate and a bottom plate forming an upper wall and a lower wall, respectively, and a first side plate and a second side plate forming side walls, respectively,
wherein the battery module housing has a bonding portion including an adhesive along a longitudinal direction, the bonding portion located at a side edge of the top plate and a top surface of the first side plate,
wherein the bonding portion has a location along the longitudinal direction at which the adhesive is not applied to define a detachable jig insertion space, such that a detachable jig can be inserted into the detachable jig insertion space to apply a load to the bonding portion to detach the joined plates, and
wherein the side edge of the top plate and the top surface of the first side plate are cut to be inclined downward with respect to a horizontal surface at predetermined angles toward an inside of the battery module housing, so that the bonding portion is provided to be inclined, and the detachable jig insertion space is provided so that the detachable jig is diagonally inserted toward an inner space of the battery module housing.

2. The battery module housing according to claim 1 , further comprising:
a second bonding portion including an adhesive along the longitudinal direction, the second bonding portion located at a second side edge of the top plate and a top surface of the second side plate,
wherein the second bonding portion has a location along the longitudinal direction at which the adhesive is not applied to define a second detachable jig insertion space,
wherein the second side edge of the top plate and the top surface of the second side plate are cut to be inclined downward with respect to a horizontal surface at predetermined angles toward the inside of the battery module housing, so that the second bonding portion is provided to be inclined, and the second detachable jig insertion space is provided so that the detachable jig is diagonally inserted toward the inner space of the battery module housing.

3. The battery module housing according to claim 1 , wherein:
the first side plate defines a concave region corresponding to the detachable jig insertion space, such that a detachable jig can be inserted into the detachable jig insertion space and the corresponding concave region to apply a load to the bonding portion to detach the joined plates.

4. The battery module housing according to claim 3 , further comprising a caulking member entirely filled in the detachable jig insertion space to close the detachable jig insertion space.

5. The battery module housing according to claim 4 , wherein the caulking member is a sealant, a urethane foam, or a rubber material in the form of a flexible foam.

6. The battery module housing according to claim 1 , further comprising:
insulation pads respectively attached to inner surfaces of the top plate, the first side plate and the second side plate; and
a thermal transfer pad attached to an inner surface of the bottom plate.

7. A battery module, comprising a battery module housing defined in claim 1 and one or more battery cells.

8. A method of disassembling the battery module housing of claim 1 , comprising:
heating the bonding portion;
inserting a detachable jig diagonally into the detachable jig insertion space; and
applying force to the detachable jig to detach the top plate from the first side plate.

9. The method of claim 8 , wherein:
the heating step lowers a bonding performance of the adhesive to 70 to 85%.

10. A method of disassembling the battery module housing of claim 2 , comprising:
heating the bonding portions;
inserting a detachable jig diagonally into the detachable jig insertion spaces; and
applying force to the detachable jig to detach the top plate from the first side plate and the second side plate.

11. A method of disassembling the battery module housing of claim 4 , comprising:
heating the bonding portion;
pushing the caulking member into the inner space of the battery module housing;
inserting a detachable jig diagonally into the detachable jig insertion space; and
applying force to the detachable jig to detach the top plate from the first side plate.

12. A method of disassembling the battery module housing of claim 4 , comprising:
heating the bonding portion;
cutting the caulking member out of the detachable jib insertion space;
inserting a detachable jig diagonally into the detachable jig insertion space; and
applying force to the detachable jig to detach the top plate from the first side plate.

13. A battery module housing comprising:
a top plate and a bottom plate forming an upper wall and a lower wall, respectively, and a first side plate and a second side plate forming side walls, respectively, the battery module housing having a rectangular tube shape provided to accommodate battery cells in an inner space thereof,
wherein the battery module housing has four bonding portions each including an adhesive along a longitudinal direction, the bonding portions located at two sites between opposing side edges of the top plate and top surfaces of the first side plate and second side plate, respectively, and at two sites between opposing side edges of the bottom plate and bottom surfaces of the first side plate and second side plate, respectively,
wherein at least one of the bonding portions has a detachable jig insertion space formed at a predetermined location, and the adhesive is not applied to the detachable jig insertion space,
wherein at least one of the top plate and the bottom plate has bent portions bent from both edges thereof and disposed in contact with outer side surfaces of the first side plate and the second side plate, and
wherein one of the side edges of the top plate and the top surface of the first side plate are cut to be inclined downward with respect to a horizontal surface at predetermined angles toward an inside of the battery module housing, so that the respective bonding portion is provided to be inclined, and the detachable jig insertion space is provided so that a detachable jig is diagonally inserted toward the inner space of the battery module housing.

Assignees

• Lg Energy Solution Ltd

Inventors

• Shin Eun-Gyu
• Kang Dal-Mo
• Mun Jeong-O
• Lee Yoon-Koo

Classifications

• H01M50/20 Primary

  Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders (structural combination of accumulators with charging apparatus H01M10/46) · CPC title

• H01M10/42 Primary

  Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells (H01M10/60 takes precedence) · CPC title

• H01M10/4207

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M10/647

  Prismatic or flat cells, e.g. pouch cells · CPC title

• H01M50/293

  characterised by the material · CPC title