CN2879430Y

CN2879430Y - Metal shell battery module

Info

Publication number: CN2879430Y
Application number: CNU2005201404348U
Authority: CN
Inventors: 荣蓉; 邢志勇; 李相哲; 葛建生; 曹广永; 黄继成
Original assignee: CHUNLAN (GROUP) CORP
Current assignee: CHUNLAN (GROUP) CORP
Priority date: 2005-12-30
Filing date: 2005-12-30
Publication date: 2007-03-14
Anticipated expiration: 2015-12-30

Abstract

The present utility model discloses a metal shell battery module which is composed of plurality of metal shell single-body batteries (7). The single-body batteries (7) are fixed by a fastening bar (8) to form a module structure and are separated by a radiator. The radiator is a radiating grid which is formed by arranging multiple grid bars (1). The upper and lower ends of each grid bar (1) are connected to form an integer structure through a cross hurdle (2), a gap (3) is disposed between the cross hurdle (2) and the side surface of the grid bars to form wind passage. The raw material of the grid bar (1) and the cross hurdle (2) are both insulation material. The utility model has good heat radiating effect and can effectively improve the safety performance of the module.

Description

The metal-back battery module

Technical field

The utility model relates to a kind of metal-back battery module.

Background technology

The metal-back battery module is made up of a plurality of metal-back cells, and cell is fixed into modular structure by bracket, is separated by radiator between the cell.When certain battery in the module abnormal conditions such as short circuit occur, overcharges, crosses when putting, when producing a large amount of heats, also be accompanied by high pressure, the generation of this high pressure is from two aspects: be the pressure that the expansion of pole piece in the battery produces on the one hand; The living pressure of cutting down output in the battery on the other hand.The big side of the pressure that battery produces by battery is applied on the heat radiation barrier in the module, traditional heat radiation barrier is by making with thermoplastics such as nylon, plastics, the barrier that dispels the heat this moment will soften, be out of shape, air channel in the battery module is narrowed down, the radiating condition of battery descends, and the temperature of battery further raises, and forms vicious circle, make the thickness of heat radiation barrier more and more thinner, finally cause whole Battery pack generation short circuit in the module.

Summary of the invention

The utility model provides a kind of heat dissipating state good metal-back battery module, and it can effectively improve the security performance of module.

The technical solution of the utility model is as follows: the metal-back battery module, it is made up of a plurality of metal-back cells, cell is fixed into modular structure by bracket, separate by radiator between the cell, described radiator is the heat radiation barrier, the heat radiation barrier is arranged in parallel by some grizzly bars and forms, the upper/lower terminal of each grizzly bar connects into overall structure by horizontal bar respectively, be provided with breach between the side of upper rail and each grizzly bar and form the air channel, the raw material of grizzly bar and horizontal bar are insulating material.

In the utility model, the width of described grizzly bar is greater than 2mm; The raw material of described grizzly bar and horizontal bar is a thermosets; The lower surface broad ways of described grizzly bar extends to form projection to one side or both sides; The upper surface broad ways of described grizzly bar extends to form projection to one side or both sides; As the outer face broad ways of the grizzly bar of barrier two housings on one side or both sides extend to form the spacing frame of battery.

After adopting such scheme, a heat radiation grid is housed between the cell in the module, when assembling,, joins so battery can be located the luggage of going forward side by side very easily because this heat radiation grid periphery has projection.Upper surface at every grizzly bar is provided with projection, in the time of can preventing between battery and battery hydrops or ponding to be arranged in the module, is short-circuited between battery, simultaneously cell is had position-limiting action.The lower surface of every grizzly bar is provided with projection, can prevent from that the chassis of installed module and battery in the module from directly contacting to make the chassis of installed module charged.The horizontal bar of barrier and the breach between the grizzly bar constitute the air channel between cell, by air draught, battery is cooled off, and the air channel area is big, good cooling results.Abnormal conditions appear in certain battery in module, short circuit, overcharge, put excessively etc. is expanded the pole piece in the battery, at this moment, the big side temperature of battery is very high, the pressure of simultaneously big side is also very big, the big side of this pressure by battery is applied on the heat radiation barrier in the module, because this barrier has fabulous high temperature resistance, the deformability of high pressure, so barrier is not out of shape at this moment, ruckbildung, cell safety valve in the module is opened, the abnormal conditions of this cell do not have any influence to adjacent cell, have guaranteed the fail safe that module is used.The heat radiation grid has certain thickness, and has insulation property, has guaranteed the insulation property between battery and certain creepage distance requirement in the module, the fail safe that has further improved whole module.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the front view of the utility model heat radiation barrier

Fig. 3 is the cutaway view of bowing of the utility model heat radiation barrier

Fig. 4 is the sectional view of the utility model heat radiation barrier

Embodiment

With reference to accompanying drawing, the utility model metal-back battery module, it is made up of a plurality of metal-back cells 7, cell 7 outsides at two ends are provided with side plate 9, be provided with the heat radiation barrier between the adjacent cell 7, side plate 9, cell 7, heat radiation barrier etc. are fixed into modular structure by bracket 8, and the pole 10 of each cell is connected by jumper 11 cross-over connections.

The heat radiation barrier, it is made up of some grizzly bars 1 and horizontal bar 2, and grizzly bar 1 is arranged in parallel, and the upper/lower terminal of each grizzly bar 1 connects into overall structure by horizontal bar 2 respectively, is provided with breach 3 between the side of upper rail 2 and each grizzly bar 1 and forms the air channel.Barrier select for use good insulation preformance, water absorption little, have the material of high temperature creep-resisting, outstanding compressive property through method moulding such as mold pressings, as thermosets BMC, SMC etc., or the thermoplastic reinforced ABS etc., the key property of this type of material is can not soften under high temperature, high pressure, water absorption is little, insulation property are good, can produce in batches by mold.The width W of grizzly bar 1 is greater than 2mm, and less than 8mm, length L is between 4-15mm, and height can be regulated according to the height of battery.The width of horizontal bar 2 is less than the width of grizzly bar 1, or staggered with grizzly bar 1, constitute air channel from top to bottom like this between the side of horizontal bar 2 and adjacent grill 1, be the heat dissipation wind channel between the adjacent monomer battery 7, windage is less, by air stream battery module is cooled off.

The lower surface broad ways of described grizzly bar 1 can extend to form projection 4 to one side or both sides; The upper surface broad ways of described grizzly bar 1 can extend to form projection 5 to one side or both sides; As the outer face broad ways of the grizzly bar 1 of barrier two housings can on one side or both sides extend to form the spacing frame 6 of battery.

Claims

1, a kind of metal-back battery module, it is made up of a plurality of metal-back cells (7), cell (7) is fixed into modular structure by bracket (8), cell is separated by radiator between (7), it is characterized in that described radiator is the heat radiation barrier, the heat radiation barrier is arranged in parallel by some grizzly bars (1) and forms, the upper/lower terminal of each grizzly bar (1) connects into overall structure by horizontal bar (2) respectively, be provided with breach (3) between the side of upper rail (2) and each grizzly bar and form the air channel, grizzly bar (1) is insulating material with the raw material of horizontal bar (2).

2, battery heat radiation barrier according to claim 1, the width that it is characterized in that described grizzly bar (1) is greater than 2mm.

3,, it is characterized in that the described grizzly bar (1) and the raw material of horizontal bar (2) are thermosets according to claim 1 or 2 described metal-back battery modules.

4,, it is characterized in that the lower surface broad ways of described grizzly bar (1) extends to form projection (4) to one side or both sides according to claim 1 or 2 described metal-back battery modules.

5,, it is characterized in that the upper surface broad ways of described grizzly bar (1) extends to form projection (5) to one side or both sides according to claim 1 or 2 described metal-back battery modules.

6, according to claim 1 or 2 described metal-back battery modules, it is characterized in that as the outer face broad ways of the grizzly bar (1) of barrier two housings on one side or both sides extend to form the spacing frame (6) of battery.