Battery box with fluid flow channels to maintain proper temperature

• US 5,589,290 A
• Filed: 03/06/1995
• Issued: 12/31/1996
• Est. Priority Date: 03/04/1994
• Status: Expired due to Term

• Current Assignee: Hoppecke Batterie Systeme GmbH (Johnson Controls International plc)
• Original Assignee: Deutsche Automobilgesellschaft mbH
• Inventors: Klink, Rainer, Warthmann, Wolfgang, German, Johann
• Primary Examiner(s): Skapars, Anthony
• Application Number:
  US08/400,105
• Time in Patent Office: 666 Days
• Field of Search: 429/96, 429/99, 429/100, 429/72, 429/148, 429/159, 429/62, 429/120, 206/333
• US Class Current: 429/99
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/625 Vehicles
• 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 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• 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: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention relates to a battery box having a plurality of orientation-independent electrochemical cells. Within the battery box, the cells are arranged horizontally, cells which are located one above the other being combined to form a cell group having flow channels arranged between adjacent cells. The flow channels of a cell group are connected via a transverse inlet flow channel to a distributor channel and via a transverse outlet flow channel to a collecting channel, the collecting channel being arranged with respect to the battery box on the side opposite the distributor channel.

Claims

1. A battery box having a plurality of orientation independent electrochemical cells, of the type in which said cells are arranged into at least one cell group, with flow channels formed between adjacent cells within said cell groups, through which a fluid can flow, a distributor channel being arranged in a first region of said box and coupled in fluid communication with said fluid flow channels at an inlet end thereof, and a collector channel being arranged in a second region of said box opposite said first region and coupled in fluid communication at an outlet end thereof, wherein:

in an installed orientation of said battery box, said cells are arranged in a horizontal orientation having the smallest dimension thereof in a vertical direction;

cells within a cell group are stacked one above the other;

each cell group has associated therewith inlet and outlet flow channels which extend transversely with respect to said battery box;

the transverse inlet flow channel is connected in fluid communication with the distributor channel and to the flow channels of a cell group associated therewith; and

the transverse outlet flow channel being connected in fluid communication with the collecting channels and the flow channels of an associated cell group.

2. Battery box according to claim 1 wherein said cells are parallelepiped in shape, having flat sides thereof with the largest dimensions oriented approximately parallel to a base and cover of the battery box.

3. Battery box according to claim 1 wherein said cells are one of:

dry cells, recombination cells, gel cells, and gas-tight cells with a bound electrolyte.

4. Battery box according to claim 1 wherein the transverse inlet flow channel and the transverse outlet flow channel are arranged at opposite ends of the cells of the cell group which form the base and the cover of a cell.

5. Battery box according to claim 1 wherein the transverse inlet flow channels have a cross-section which tapers in the flow direction, and the transverse outlet flow channels have a free cross-section which widens in the flow direction.

6. Battery box according to claim 1 wherein the cells of a cell group are arranged approximately in a straight line, aligned, one above the other.

7. Battery box according to claim 6 wherein alignment of said cells is parallel to the shortest edge of the cells.

8. Battery box according to claim 1 wherein the battery box has a plurality of cell groups which are arranged longitudinally on a pole bolt side thereof, one behind the other, and are spaced apart with their mutual separation ensured by spacer bars resting at the edge against the cells of the cell groups.

9. Battery box according to claim 1 wherein:

the battery box has a plurality of cell groups which are arranged longitudinally on a pole bolt side thereof, one behind the other, and are spaced apart, with their mutual separation ensured by spacer bars;

the spacer bars rest at the edge against edges of the cells of these cell groups, said edges being on end or pole bolt sides of the cells;

the spacer bars have a guide groove into which guide plates are introduced which guide the transverse flow of the fluid; and

flat sides of the guide plates, together with the respectively opposite ends of the respective cells of these cell groups, form the transverse outlet flow channel of the first cell group and the transverse inlet flow channel of the second cell group.

10. Battery box according to claim 1 wherein:

the bottom cell of a cell group rests on a supporting ledge, which ensures the separation of a sealing plate placed above the base of the battery box;

a flow channel is formed between the sealing plate and the bottom cell of a cell group; and

one channel of the collecting channel and distributor channel is arranged underneath the sealing plate, and the other channel is arranged above the top cell of one cell group and below the cover of the battery box.

11. Battery box according to claim 1 wherein:

the unobstructed width, through which flow can pass freely, of the distributor channel reduces in the flow direction and in that the unobstructed width, through which flow can pass freely, of the collecting channel increases in the flow direction.