Battery module

• US 9,960,395 B2
• Filed: 08/16/2012
• Issued: 05/01/2018
• Est. Priority Date: 08/16/2012
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Yoon, Jongmoon, Merriman, Robert, Yang, Heekook
• Primary Examiner(s): Stagg, Miriam
• Assistant Examiner(s): Thomas, Brent C
• Application Number:
  US13/586,960
• Publication Number:
  US 20140050953A1
• Time in Patent Office: 2,084 Days
• Field of Search: 429 82
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/647 Prismatic or flat cells, e.g. pouch cells
• CPC Class Codes: H01M 10/6557 arranged between the cells
• CPC Class Codes: H01M 10/6562 with free flow by convection only
• CPC Class Codes: H01M 10/6566 Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers H01M10/6565 takes precedence
• CPC Class Codes: H01M 50/211 adapted for pouch cells
• CPC Class Codes: H01M 50/227 Organic material
• CPC Class Codes: H01M 50/264 for cells or batteries, e.g. straps, tie rods or peripheral frames
• CPC Class Codes: H01M 50/30 Arrangements for facilitating escape of gases
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A battery module having a first battery cell; a frame member having first and second sides and first, second, third and fourth peripheral walls; and first and second thermally conductive plate members is provided. A plurality of flow channels are formed by the first and second thermally conductive plates. The third peripheral wall has a first outlet that receives the first electrical terminal of the first battery cell therethrough, such that if the first battery cell outputs gases therefrom the first outlet routes the gases from the first battery cell to outside of the frame member such that the gases are isolated from the air flowing through the plurality of flow channels.

Claims

1. A battery module, comprising:

a first battery cell having first and second electrical terminals;

a frame member having first and second sides, first, second, third and fourth peripheral walls, and first and second thermally conductive plates;

the first side of the frame member being disposed against the first battery cell;

the first and second peripheral walls being generally parallel to one another and being disposed between and coupled to the third and fourth peripheral walls;

the first, second, third and fourth peripheral walls defining an open interior region therebetween;

the first peripheral wall having a first plurality of apertures extending therethrough, the second peripheral wall having a second plurality of apertures extending therethrough;

the first and second thermally conductive plates being coupled together with at least one weld joint;

the first thermally conductive plate having first, second, and third peripheral portions extending into and coupled to the first, second, and third peripheral walls, respectively, the first thermally conductive plate adapted to enclose the open interior region proximate to the first side of the frame member, the first thermally conductive plate being disposed directly on and against the first battery cell;

the second thermally conductive plate having first, second, and third peripheral portions disposed within and coupled to the first, second, and third peripheral walls, respectively, the third peripheral portion of the second thermally conductive plate being disposed directly against and contacting the third peripheral portion of the first thermally conductive plate within the third peripheral wall, the second thermally conductive plate adapted to enclose the open interior region proximate to the second side of the frame member such that a plurality of flow channels are formed by the first and second thermally conductive plates between the first and second thermally conductive plates,

the first and second thermally conductive plates extending through at least a portion of the first peripheral wall, and an upper end portion of the first thermally conductive plate and an upper end portion of the second thermally conductive plate in the first peripheral wall form an upper open end of each of the plurality of flow channels, each aperture of the first plurality of apertures extending through the first peripheral wall fluidly communicating with the upper open end of a respective flow channel of the plurality of flow channels;

a number of the plurality of flow channels being equal to a number of the first plurality of apertures;

the first and second thermally conductive plates extending through at least a portion of the second peripheral wall, and a lower end portion of the first thermally conductive plate and a lower end portion of the second thermally conductive plate in the second peripheral wall form a lower open end of each of the plurality of flow channels, each aperture of the second plurality of apertures extending through the second peripheral wall fluidly communicating with the lower open end of a respective flow channel of the plurality of flow channels;

the number of the plurality of flow channels being equal to a number of the second plurality of apertures; and

the first thermally conductive plate extracting heat energy from the first battery cell when air flows through the plurality of flow channels defined by the first and second thermally conductive plates.

2. The battery module of claim 1, wherein the first thermally conductive plate further having a fourth peripheral portion extending into and coupled to the fourth peripheral wall, and the second thermally conductive plate further having a fourth peripheral portion extending into and coupled to the fourth peripheral wall, and the fourth peripheral portion of the second thermally conductive plate being disposed directly against and contacting the fourth peripheral portion of the first thermally conductive plate within the fourth peripheral wall.

4. The battery module of claim 1, wherein the third peripheral wall includes a first outlet configured to receive the first electrical terminal of the first battery cell therethrough, the battery module further comprising:

a first end plate being disposed against the first battery cell such that the first battery cell is disposed between the frame member and the first end plate;

the frame member further having first and second elastomeric sealing members, the first elastomeric sealing member being disposed on the first peripheral wall on a first side of the frame member, a first end of the first elastomeric sealing member terminating on an upper portion of the third peripheral wall on the first side of the frame member, and a second end of the first elastomeric sealing member terminating on an upper portion of the fourth peripheral wall on the first side of the frame member, the second elastomeric sealing member being disposed on the second peripheral wall on the first side of the frame member, a first end of the second elastomeric sealing member terminating on a lower portion of the third peripheral wall on the first side of the frame member, and a second end of the second elastomeric sealing member terminating on a lower portion of the fourth peripheral wall on the first side of the frame member, the first and second elastomeric sealing members contacting the first end plate and being adapted to route gases from the first battery cell toward the first outlet disposed between the first and second elastomeric sealing members such that the gases are isolated from the air flowing through the plurality of flow channels.

5. The battery module of claim 1, wherein the first thermally conductive plate includes an outer surface defining a plurality of flat ridge surface portions and a plurality of tread surface portions, a first tread portion of the plurality of tread portions being disposed between first and second flat ridge surface portions of the plurality of flat ridge surface portions;

and a second tread portion of the plurality of tread portions being disposed between the second flat ridge surface portion and a third flat ridge surface portion of the plurality of flat ridge surface portions, the first battery cell being disposed directly on and against the plurality of flat ridge surface portions.

6. The battery module of claim 1, wherein each upper open end of each respective flow channel of the plurality of flow channels has a one-to-one correspondence with a respective aperture of the first plurality of apertures in the first peripheral wall;

and each lower open end of each respective flow channel of the plurality of flow channels has a one-to-one correspondence with a respective aperture of the second plurality of apertures in the second peripheral wall.

3. A battery module, comprising:

a first battery cell having first and second electrical terminals;

a frame member having first, second, third and fourth peripheral walls, and first and second thermally conductive plates;

the frame member being disposed against the first battery cell;

the first and second peripheral walls being disposed between and coupled to the third and fourth peripheral walls;

the first and second peripheral walls being generally parallel to one another and being disposed between and coupled to the third and fourth peripheral walls;

the first, second, third and fourth peripheral walls defining an open interior region therebetween;

the first peripheral wall having a first plurality of apertures extending therethrough, the second peripheral wall having a second plurality of apertures extending therethrough;

the first thermally conductive plate having first, second, and third peripheral portions extending into and coupled to the first, second, and third peripheral walls, respectively, the first thermally conductive plate adapted to enclose the open interior region;

the first thermally conductive plate being disposed against the first battery cell, the first thermally conductive plate extending in a first direction from the first peripheral wall to the second peripheral wall;

the second thermally conductive plate having first, second, and third peripheral portions extending into and coupled to the first, second, and third peripheral walls, respectively;

the third peripheral portion of the second thermally conductive plate being disposed directly against and contacting the third peripheral portion of the first thermally conductive plate within the third peripheral wall;

the second thermally conductive plate adapted to enclose the open interior region;

the first and second thermally conductive plates defining a plurality of flow channels therebetween;

an upper end portion of the first thermally conductive plate and an upper end portion of the second thermally conductive plate extending through at least a portion of the first peripheral wall in the first direction and contacting the first peripheral wall, the upper end portion of the first thermally conductive plate and the upper end portion of the second thermally conductive plate forming an upper open end of each of the plurality of flow channels that fluidly communicate with a respective aperture of the first plurality of apertures;

a number of the plurality of flow channels being equal to a number of the first plurality of apertures;

a lower end portion of the first thermally conductive plate and a lower end portion of the second thermally conductive plate extending through at least a portion of the second peripheral wall in the first direction and contacting the second peripheral wall, the lower end portion of the first thermally conductive plate and the lower end portion of the second thermally conductive plate forming a lower open end of each of the plurality of flow channels that fluidly communicate with a respective aperture of the second plurality of apertures;

the number of the plurality of flow channels being equal to a number of the second plurality of apertures;

the first thermally conductive plate extracting heat energy from the first battery cell when air flows through the first plurality of apertures of the first peripheral wall, and the plurality of flow channels, and the second plurality of apertures of the second peripheral wall.

7. The battery module of claim 3, wherein the first thermally conductive plate includes an outer surface defining a plurality of flat ridge surface portions and a plurality of tread surface portions, a first tread portion of the plurality of tread portions being disposed between first and second flat ridge surface portions of the plurality of flat ridge surface portions;

and a second tread portion of the plurality of tread portions being disposed between the second flat ridge surface portion and a third flat ridge surface portion of the plurality of flat ridge surface portions, the first battery cell being disposed directly on and against the plurality of flat ridge surface portions.

8. The battery module of claim 3, wherein each upper open end of each respective flow channel of the plurality of flow channels has a one-to-one correspondence with a respective aperture of the first plurality of apertures in the first peripheral wall;

and each lower open end of each respective flow channel of the plurality of flow channels has a one-to-one correspondence with a respective aperture of the second plurality of apertures in the second peripheral wall.