Battery pack including reinforcement supporting member

Patent metadata

Field	Value
Publication number	US-10529967-B2
Application number	US-201615750771-A
Country	US
Kind code	B2
Filing date	Sep 12, 2016
Priority date	Nov 5, 2015
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

A battery pack has a base plate including one surface on which two or more battery module assemblies respectively having a plurality of battery cells arranged therein are mounted in a separated state from each other with a predetermined interval therebetween. A cover member battery is coupled at one surface of the base plate in a state that the module assemblies are incorporated therein. A reinforcement supporting member is positioned at a separation part between the battery module assemblies while supporting a mounting state of the cover member for the base plate.

First claim

The invention claimed is:

1. A battery pack comprising:
a base plate including one surface on which two or more battery module assemblies respectively having a plurality of battery cells arranged therein are mounted in a separated state from each other with a predetermined interval therebetween, the base plate having a plurality of mounting parts for supporting the two or more battery module assemblies and at least one compartment space extending across a width of the base plate and between the plurality of mounting parts;
a cover member battery coupled at one surface of the base plate to enclose the battery module assemblies, the cover member having a plurality of recesses for covering the two or more battery module assemblies and at least one separation part extending across a width of the cover member and between the plurality of recesses; and
a reinforcement supporting member extending between the at least one compartment space and the at least one separation part between the battery module assemblies to secure the cover member to the base plate.

2. The battery pack of claim 1 , wherein each battery module assembly is formed with a cuboid structure in which a length of a first side is larger than a length of a second side.

3. The battery pack of claim 2 , wherein the battery module assemblies are mounted on the base plate so that the first sides of the battery module assemblies face each other.

4. The battery pack of claim 1 , wherein a mutual separation distance of the battery module assemblies has a size of 150% to 500% with respect to a width of the reinforcement supporting member.

5. The battery pack of claim 1 , wherein, in the base plate, the at least one compartment space is formed at the at least one separation part between the battery module assemblies to divide a part where the battery module assemblies are mounted.

6. The battery pack of claim 5 , wherein the reinforcement supporting member is disposed at the at least one compartment space of the base plate.

7. The battery pack of claim 1 , wherein the cover member is formed with a structure in which an interior circumference corresponds to an external circumferential surface of a battery module assembly group.

8. The battery pack of claim 7 , wherein the cover member is formed with a structure in which a part corresponding to the at least one separation part between the battery module assemblies is recessed inside to define the battery module assemblies.

9. The battery pack of claim 1 , wherein the reinforcement supporting member is formed with a structure in which a connection beam is connected between at least two supporting parts.

10. The battery pack of claim 9 , wherein the supporting parts and the connection beam are formed with an integral structure.

11. The battery pack of claim 9 , wherein the length of the connection beam connected between the supporting parts has a size of 10% to 30% with respect to the entire length of the reinforcement supporting member.

12. The battery pack of claim 9 , wherein each supporting part is formed with a columnar shape in which a horizontal cross-sectional shape is a circular, quadrangular, triangular, or polygonal structure.

13. A device comprising the battery pack of claim 1 .

14. A battery pack comprising:
a base plate including one surface on which two or more battery module assemblies respectively having a plurality of battery cells arranged therein are mounted in a separated state from each other with a predetermined interval therebetween;
a cover member battery coupled at one surface of the base plate in a state that the module assemblies are incorporated therein; and
a reinforcement supporting member positioned at a separation part between the battery module assemblies while supporting a mounting state of the cover member for the base plate,
wherein, in the reinforcement supporting member, both surfaces of the supporting parts facing each other are respectively joined face-to-face to a recessed part of an interior circumference of the cover member and the separation part of the battery module assemblies on the base plate.

15. The battery pack of claim 14 , wherein the supporting part is formed with a fastening hole to which a fastener is joined at both surfaces that are joined face-to-face to the cover member and the base plate.

16. The battery pack of claim 15 , wherein the fastening hole is formed with a structure penetrating both surfaces of the supporting part facing each other.

17. The battery pack of claim 15 , wherein a through hole is respectively formed at the parts of the cover member and the base plate corresponding to the fastening hole of the supporting part, and the fastener is inserted and joined through a through hole and a fastening hole in a direction from the cover member or the base plate thereto.

18. The battery pack of claim 14 , wherein the supporting part is interposed with a watertight gasket on both surfaces facing the base plate and the cover member to be joined.

19. The battery pack of claim 18 , wherein the watertight gasket is formed with a structure such that the part corresponding to the fastening hole of the supporting part is penetrated.

20. The battery pack of claim 18 , wherein the material of the watertight gasket is at least one selected from a group including a synthetic rubber, a natural rubber, a silicone resin, and polyvinyl chloride.

Assignees

• Lg Chemical Ltd

Inventors

• Jung Jun Hee
• Kim Min Sung
• Lee Yoon Hee
• Lee Hak Jun

Classifications

• H01M50/24 Primary

  adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M2220/20

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

• H01M2/1094

  Electricity · mapped topic

• H01M2/1077 Primary

  Electricity · mapped topic