Housing member for battery module

• US 7,879,485 B2
• Filed: 04/19/2006
• Issued: 02/01/2011
• Est. Priority Date: 04/20/2005
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Ahn, Jaesung, Yoon, Junill, Ro, Jong-yul, Yoon, Yeo Won, Yang, Heekook
• Primary Examiner(s): Yuan; Dah-Wei D
• Assistant Examiner(s): ROE, CLAIRE LOUISE
• Application Number:
  US11/407,157
• Publication Number:
  US 20060251960A1
• Time in Patent Office: 1,749 Days
• Field of Search: 429/62, 429 65- 66, 429/120, 429148-149, 429158-161, 439/522, 439762-763, 320/107, 320/110, 320/116, 296231-6235
• US Class Current: 429/128
• CPC Class Codes: H01M 50/124 having a layered structure
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: H01M 50/227 Organic material
• CPC Class Codes: H01M 50/244 Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
• CPC Class Codes: H01M 50/258 Modular batteries; Casings provided with means for assembling
• CPC Class Codes: H01M 50/289 characterised by spacing elements or positioning means within frames, racks or packs spacing elements inside cells other than separators, membranes or diaphragms H01M50/471
• CPC Class Codes: H01M 50/505 comprising a single busbar
• CPC Class Codes: H01M 50/51 Connection only in series
• CPC Class Codes: H01M 50/529 Intercell connections through partitions, e.g. in a battery casing
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

Disclosed herein is a housing member for a battery module, which is mounted to at least one side of the battery module such that a flow channel of refrigerant is defined in the battery module having unit cells stacked therein, wherein the housing member is provided with electrically connecting members for electrically connecting electrode terminals of the unit cells with each other and/or electrically connecting an external device to the electrode terminals, the electrically connecting members being integrally formed at the housing member. The housing member according to the present invention is manufactured in a structure in which the electrically connecting members are integrally formed at the housing member. Consequently, the manufacturing costs of the housing member are reduced. Furthermore, the assembly process of the battery module is greatly simplified, and the occurrence of short circuits caused by an engineer'"'"'s mistake is effectively prevented.

Claims

1. A housing member for a battery module, which is mounted to at least one side of the battery module such that a flow channel of refrigerant is defined in the battery module having unit cells stacked therein, wherein

the housing member includes a rectangular housing member body and first and second electrically connecting members integrally formed on first and second ends, respectively, of the rectangular housing member body, the first and second electrically connecting members configured to electrically connect electrode terminals of the unit cells with each other and/or to electrically connect an external device to the electrode terminals;

the battery module is constructed of stacked cartridges, each of which has two or more unit cells mounted therein, one on another, the unit cells are arranged in several rows depending upon a number of the unit cells mounted in each cartridge;

the rectangular housing member body has wedge-shaped compartments extending therein that are divided by partitions extending vertically on the housing member body, each wedge-shaped compartment being disposed proximate to a corresponding unit cell group, and the wedge-shaped compartments are inclined in the flow direction of the refrigerant such that the refrigerant moves upward along an inside surface of the compartments and then the refrigerant is introduced between the cartridges.

2. The housing member according to claim 1, wherein the unit cells are stacked one on another while one unit cell or more than one unit cell is mounted in each cartridge, the electrode terminals protrude from opposite ends of each cartridge, and the housing member is mounted to the side of the battery module where the electrode terminals are arranged while the cartridges are stacked one on another.

3. The housing member according to claim 1, wherein each of the electrically connecting members comprises:

an electrically insulating hollow connecting member body having an open upper end; and

an electrically insulating cover coupled to the open upper end of the connecting member body,

wherein each of the electrically connecting members are constructed such that a plate-shaped conductive bus bar is mounted to the lower end of the connecting member body;

two or more terminal insertion holes are formed in the lower end of the connecting member body and the bus bar, the terminal insertion holes formed in the lower end of the connecting member body communicating with the terminal insertion holes formed in the bus bar; and

a connecting member insertion slit is formed in one side of connecting member body for allowing further connection of the corresponding electrode terminal to an external connecting member, if necessary.

4. The housing member according to claim 1, wherein the housing member is made of an electrically insulating material or is coated with an electrically insulating material.

5. The housing member according to claim 4, wherein the housing member and the electrically connecting members are manufactured by one-time injection molding of a plastic resin.

6. A battery module having the housing member according to claim 1.

7. The battery module according to claim 6, wherein unit cells are stacked one on another while one unit cell or more than one unit cell is mounted in each cartridge, a plurality of cartridges are stacked one on another, and flow channels of refrigerant are defined between the stacked cartridges.

8. The battery module according to claim 7, wherein the refrigerant is air.

9. The battery module according to claim 6, wherein an inlet port for allowing the refrigerant to be introduced therethrough and an outlet port for allowing the refrigerant to be discharged therethrough are located on the same plate of the battery module, and the flow channel of refrigerant between the inlet port and the outlet port is divided such that the refrigerant introduced through the inlet port cools specified cell groups and is then discharged through the outlet port.

10. The battery module according to claim 6, wherein unit cells are stacked one on another while one unit cell or more than one unit cell is mounted in each cartridge, a plurality of cartridges are stacked one on another in such a manner that the electrode terminal of a second cartridge disposed adjacent to a first cartridge is oriented by 180 degrees with respect to the electrode terminal of the first cartridge, and the electrode terminal of a third cartridge disposed adjacent to the second cartridge is disposed in the same orientation as the electrode terminal of the first cartridge, the electrode terminal of the first cartridge is electrically connected with the electrode terminal of the third cartridge, the electrode terminal of the second cartridge is electrically connected with the electrode terminal of a fourth cartridge, and the electrode terminal of the last cartridge is electrically connected with the electrode terminal of a cartridge adjacent to the last cartridge.

11. The battery module according to claim 6, wherein the battery module is used for electric vehicles or hybrid electric vehicles.