Battery module

• US 9,196,883 B2
• Filed: 09/23/2011
• Issued: 11/24/2015
• Est. Priority Date: 11/04/2010
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Inventors: Kim, Myung-Chul, Lee, Hyun-Ye, Jin, Hee-Joon, Yang, Seung-Woo, Sohn, Kwon
• Primary Examiner(s): Crepeau, Jonathan
• Application Number:
  US13/243,355
• Publication Number:
  US 20120114985A1
• Time in Patent Office: 1,523 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/647 Prismatic or flat cells, e.g. pouch cells
• CPC Class Codes: H01M 10/6562 with free flow by convection only
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: H01M 50/262 with fastening means, e.g. locks
• 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: 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 including a battery array including: a plurality of battery cells, each including a first surface at a first end of the battery cell; an electrode terminal at the first end; a second surface at a second end of the battery cell opposite the first end; and a side surface extending between the first and second ends, the second surfaces of first and second battery cells of the plurality of battery cells facing each other.

Claims

1. A battery module comprising a battery array comprising:

a plurality of battery cells, each having a generally hexahedral shape and comprising;

a first surface at a first end of the battery cell;

a pair of electrode terminals at the first end;

a second surface at a second end of the battery cell opposite the first end; and

a side surface extending between the first and second ends,

wherein the second surfaces of first and second battery cells of the plurality of battery cells face each other;

first and second fixing members adjacent outer side surfaces of the plurality of battery cells; and

a plurality of supporting members between the second surfaces of the first and second battery cells,

wherein at least one another first battery cell of the plurality of battery cells is stacked over the first battery cell and at least one another second battery cell of the plurality of battery cells is stacked over the second battery cell,

wherein the second surfaces of the at least one another first battery cell and the at least one another second battery cell face each other, and

wherein each of the supporting members comprises a thread-fastening portion, and the first and second fixing members have fastener holes for fastening the first and second fixing members to the thread-fastening portion.

2. The battery module of claim 1, further comprising end plates at opposite outer ends of the battery array adjacent the first ends of the battery cells, the end plates having terminal openings exposing the electrode terminals, wherein at least one of the fixing members connects the end plates.

3. The battery module of claim 1,

wherein the side surfaces of the first battery cell and the at least one another first battery cell face each other, and

wherein the side surfaces of the second battery cell and the at least one another second battery cell face each other.

5. The battery module of claim 3, further comprising an insulating plate between battery cells of the plurality of battery cells stacked adjacent one another.

6. The battery module of claim 3,

wherein the side surface is a first side surface, and each of the battery cells further comprises a second side surface opposite the first side surface and extending between the first and second ends, and

wherein the first and second fixing members are adjacent opposite outer second side surfaces of the stacked battery cells.

7. The battery module of claim 6, wherein at least one of the first and second fixing members comprises a plurality of bars.

8. The battery module of claim 6, wherein at least one of the first and second fixing members comprises a plate.

11. The battery module of claim 6,

wherein each of the battery cells further comprises a pair of third side surfaces opposite each other, extending between the first and second side surfaces, and extending between the first and second ends, and

wherein the battery module further comprises third fixing members adjacent the third side surfaces of battery cells of the stacked battery cells.

12. The battery module of claim 11, wherein each of the third fixing members has a plurality of heat dissipation holes spaced apart along a lengthwise direction.

13. The battery module of claim 1, further comprising end plates at opposite outer ends of the battery array adjacent the first ends of the battery cells, the end plates having terminal openings exposing the electrode terminals,

wherein each of the battery cells further comprises a vent at the first end, and the end plates have exhaust openings at locations corresponding to the vents.

14. The battery module of claim 1, wherein the battery module is configured for driving a motor of an electric vehicle or a hybrid electric vehicle.

15. The battery module of claim 1, wherein the battery module is electrically connected to at least one another battery module.

16. The battery module of claim 1, wherein the plurality of supporting members are spaced apart from each other.

17. The battery module of claim 16, wherein the plurality of supporting members are spaced apart in a direction perpendicular to a stacking direction.

4. A battery module comprising a battery array comprising:

a plurality of battery cells, each comprising;

a first surface at a first end of the battery cell;

a pair of electrode terminals at the first end;

a second surface at a second end of the battery cell opposite the first end; and

a side surface extending between the first and second ends,

wherein the second surfaces of first and second battery cells of the plurality of battery cells face each other;

first and second fixing members adjacent outer side surfaces of the plurality of battery cells; and

a supporting member between the second surfaces of the first and second battery cells,

wherein the supporting member comprises a thread-fastening portion, and the first and second fixing members have fastener holes for fastening the first and second fixing members to the thread-fastening portion,

wherein at least one another first battery cell of the plurality of battery cells is stacked with the first battery cell in a stacking direction, the side surfaces of the first battery cell and the at least one another first battery cell facing each other,

wherein at least one another second battery cell of the plurality of battery cells is stacked with the second battery cell in the stacking direction, the side surfaces of the second battery cell and the at least one another second battery cell facing each other, and

wherein the second surfaces of the at least one another first battery cell and the at least one another second battery cell face each other, and

wherein a height of the battery array in the stacking direction is less than a length of a battery cell of the plurality of battery cells in a direction extending between the first and second ends.

9. A battery module comprising a battery array comprising:

a plurality of battery cells, each having a generally hexahedral shape and comprising;

a first surface at a first end of the battery cell;

an electrode terminal at the first end;

a second surface at a second end of the battery cell opposite the first end; and

a side surface extending between the first and second ends,

wherein the second surfaces of first and second battery cells of the plurality of battery cells face each other,

wherein at least one another first battery cell of the plurality of battery cells is stacked over the first battery cell, the side surfaces of the first battery cell and the at least one another first battery cell facing each other,

wherein at least one another second battery cell of the plurality of battery cells is stacked over the second battery cell, the side surfaces of the second battery cell and the at least one another second battery cell facing each other,

wherein the second surfaces of the at least one another first battery cell and the at least one another second battery cell face each other,

wherein each of the battery cells has a generally hexahedral shape, the side surface is a first side surface, and each of the battery cells further comprises a second side surface opposite the first side surface and extending between the first and second ends,

wherein the battery module further comprises first and second fixing members adjacent opposite outer second side surfaces of the stacked battery cells, and

wherein the battery module further comprises a plurality of supporting members between the second surfaces of the first and second battery cells, wherein the plurality of supporting members are fixed between the first and second fixing members; and

wherein each of the supporting members comprises a thread-fastening portion, and the first and second fixing members have fastener holes for fastening the first and second fixing members to the thread-fastening portion.

10. The battery module of claim 9, wherein each of the supporting members comprises an insulating material, and the thread-fastening portion comprises a metal.