CN211789369U

CN211789369U - Air guide device of power battery cooling system

Info

Publication number: CN211789369U
Application number: CN202020289760.XU
Authority: CN
Inventors: 李飞; 王凯; 边东生
Original assignee: Chery and Wanda Guizhou Bus Co Ltd
Current assignee: Chery and Wanda Guizhou Bus Co Ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-10-27
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses a passenger train radiator fan air ducting, air ducting contains the guide duct of installing between heat dissipation host computer and heat dissipation grid, the guide duct is the hollow cylinder structure that both ends are the flange face, and the guide duct evenly is equipped with 4-6 bar holes on being close to the side of one end flange face wherein, and the guide duct mounting passes the bar hole and locates the fan fixing bolt fastening connection on the heat dissipation host computer, and be equipped with sealed sponge between guide duct and the heat dissipation host computer, the guide duct other end passes through joint strip and connects the heat dissipation grid. The device forms a heat dissipation channel from inside to outside, heat can only flow from the heat dissipation host machine to the heat dissipation grid direction and cannot flow back to the interior of the vehicle, a smooth heat dissipation channel is formed, and the heat dissipation efficiency of the power battery is improved; the device has simple structure, is positioned between the heat dissipation host and the heat dissipation grid, and does not occupy the extra space in the vehicle or the cabin body.

Description

Air guide device of power battery cooling system

Technical Field

The utility model belongs to the technical field of car power battery cooling system, concretely relates to power battery cooling system air ducting.

Background

With the popularization of new energy automobiles, pure electric buses have become the mainstream of the current new energy buses, the energy loading capacity of the pure electric buses at present can not meet the requirement of customers on the driving range of the vehicles, the main requirements of most customers for loading large electric quantity and improving the driving range are met, and the power battery is developed from slow charging to fast charging.

For the problem of large heat productivity in the charging and discharging processes of the quick-charging battery, battery manufacturers usually adopt a water cooling mode to solve the problem, namely a set of heat dissipation system is equipped for the power battery, and the core component of the heat dissipation system is a heat dissipation host. The limit of the installation space reserved for the power system by the pure electric bus is received, the installation mode of the heat dissipation host machine in the current whole car factory is only to find an installation position, the heat dissipation effect is not considered emphatically, the heat dissipation effect of the power battery is poor, and therefore the charge-discharge efficiency of the power battery and the service life of the power battery are affected.

In the prior art, an auxiliary heat dissipation device special for improving the effect of a battery heat dissipation system is not found, and the existing vehicle is only provided with a heat dissipation grid on a vehicle body at the position of a fan of a heat dissipation host machine in the design and production processes, so that heat generated by a power battery cannot be quickly discharged out of the vehicle, and a heat dissipation channel is not smooth.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the air guide device of the power battery cooling system is provided, and the problems that the power battery cooling system is poor in cooling effect and unsmooth in cooling channel are solved.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the air guide device of the power battery heat dissipation system comprises an air guide cylinder arranged between a heat dissipation host and a heat dissipation grid, wherein the two ends of the air guide cylinder are of a hollow cylindrical structure with flange surfaces, 4-6 strip-shaped holes are uniformly formed in the side surface, close to the flange surface at one end, of the air guide cylinder, a fixing piece of the air guide cylinder penetrates through the strip-shaped holes to be fixedly connected with a fan fixing bolt arranged on the heat dissipation host, a sealing sponge is further arranged between the air guide cylinder and the heat dissipation host, and the other end of the air guide cylinder is connected with the heat dissipation grid through a sealing rubber strip.

Furthermore, the inner diameters of the flange surfaces at the two ends of the air duct are consistent and larger than the outer diameter of the fan on the heat dissipation host.

Furthermore, the sealing sponge is made of non-metal materials and is of a compressible annular structure with the thickness of 3-5 cm.

Furthermore, the inner diameter of the sealing sponge is larger than the outer diameter of a fan on the heat dissipation host, and the outer diameter of the sealing sponge is larger than the outer diameter of flange faces at two ends of the air duct.

Furthermore, a sealing rubber strip is arranged between the air duct and the heat dissipation grid, and rubber bubbles of the sealing rubber strip are in contact with the heat dissipation grid.

Further, the air duct fixing piece is an L-shaped steel plate, a round hole is formed in one folded edge, and the diameter of the round hole is larger than the outer diameter of the fan fixing bolt; and a bolt is welded on the other folded edge, and the outer diameter of the bolt is smaller than the width of the strip-shaped hole.

Furthermore, the hem of the air guide cylinder fixing piece welding bolt penetrates through the strip-shaped hole from the inner side of the air guide cylinder through the bolt and is fixedly connected with the air guide cylinder after being fastened by the nut.

Furthermore, the fan fixing bolts are uniformly arranged along the outer ring of the fan of the heat dissipation host, penetrate through the circular holes in the folded edges of the air guide cylinder fixing piece and are fixedly connected with the air guide cylinder after being fastened.

Furthermore, the heat dissipation grids are arranged on the outer wall of the vehicle body corresponding to the heat dissipation host and are heat dissipation holes in a strip shape, a circular shape or a square shape.

Compared with the prior art, the beneficial effects of the utility model are that: a fan fixing bolt on a power battery heat dissipation host is used as a transition piece to install the air duct on the heat dissipation host through the installation of the air duct, and compressible sponge and sealing rubber strips are installed between the heat dissipation host and the air duct and between the air duct and a heat dissipation grid on the outer wall of a vehicle body; a closed cylindrical heat dissipation channel is formed between the heat dissipation host and the heat dissipation grid, so that heat generated by the power battery can only flow towards the heat dissipation grid and cannot flow back into a vehicle, the effect of quickly dissipating heat of the power battery is achieved, the charge and discharge efficiency of the power battery is improved, and the service life of the power battery is prolonged.

The utility model discloses simple structure, processing, simple to operate are located between heat dissipation host computer and the outer wall heat dissipation grid of car, do not account for in the car or the extra space of the cabin body.

Drawings

Fig. 1 is a schematic structural view of an air guide device of the present invention;

fig. 2 is a schematic view of the fixing bolt of the fan of the cooling host of the present invention;

FIG. 3 is a schematic view of the sealing sponge of the present invention;

fig. 4 is a schematic view of the air duct fixing member of the present invention;

fig. 5 is a schematic view illustrating the assembly of the air guide duct and the air guide duct fixing member of the present invention;

fig. 6 is the assembly schematic diagram of the sealing sponge and the sealing rubber strip of the present invention.

Wherein: 1. the heat dissipation host computer, 2, sealed sponge, 3, the guide duct, 4, joint strip, 5, guide duct mounting, 6, fan fixing bolt, 7, heat dissipation grid, 8, nut, 9, bar hole, 10, round hole, 11, bolt.

Detailed Description

The present invention is described in further detail below with reference to the attached drawings and the detailed description, so as to facilitate better understanding by those skilled in the art.

Referring to fig. 1-6, an air guiding device of a power battery heat dissipation system is installed in a cabin of a vehicle body or on a vehicle body skeleton close to a power battery, and is located between a heat dissipation main unit 1 and a heat dissipation grid 7, and the heat dissipation grid 7 is arranged on an outer wall of the vehicle body corresponding to the heat dissipation main unit 1 and is a bar-shaped, circular or square heat dissipation hole.

The air guide device comprises: the air guide device comprises an air guide cylinder 3, a fan fixing bolt 6, an air guide cylinder fixing piece 5, a sealing sponge 2 and a sealing rubber strip 4.

The fan fixing bolts 6 are uniformly arranged along the outer ring of the fan on the heat dissipation main machine 1 and are used for connecting the air duct 3 with the heat dissipation main machine 1.

The air duct 3 is a hollow cylindrical structure with flange surfaces at two ends, the inner diameters of the flange surfaces at two ends of the air duct 3 are consistent and are larger than the outer diameter of a fan on the heat dissipation host 1, 4 strip-shaped holes 9 are uniformly arranged on the side surface, close to the flange surface at one end, of the air duct 3, 90-degree included angles are formed between the adjacent strip-shaped holes 9, and the installation state of the air duct 3 can be adjusted through the strip-shaped holes 9 so as to adapt to different installation environments.

The air duct fixing piece 5 is an L-shaped steel plate and 4 corresponding to the number of the strip-shaped holes 9 in the air duct 3. A round hole 10 is formed in one folded edge of the air duct fixing piece 5, the diameter of the round hole 10 is larger than the outer diameter of the fan fixing bolt 6, and the air duct fixing piece 5 is fixed to the heat dissipation host 1 through the round hole 10 by the fan fixing bolt 6; and a bolt 11 is welded on the other folded edge, the bolt 11 extends to one side far away from the round hole 10, the outer diameter of the bolt 11 is smaller than the width of the strip-shaped hole 9, the bolt 11 penetrates through the strip-shaped hole 9 from the inner side of the air guide cylinder 3, and the outer wall surface of the air guide cylinder 3 is fastened by adopting a nut 8, so that the air guide cylinder 3 is fixed.

The sealing sponge 2 is made of non-metal materials and is of a compressible annular structure with the thickness of 3cm, the inner diameter of the sealing sponge 2 is larger than the outer diameter of a fan on the heat dissipation host 1 and smaller than the inner diameter of the air guide cylinder 3, and the outer diameter of the sealing sponge is larger than the outer diameter of flange faces at two ends of the air guide cylinder 3. The sealing sponge 2 is arranged between the heat dissipation main machine 1 and the air duct 3, one surface of the sealing sponge is in contact with the heat dissipation main machine 1, the other surface of the sealing sponge is in contact with the flange surface of the air duct 3, and the sealing sponge has a certain compression amount, so that the air duct can be sealed, hot air backflow is avoided, and the heat dissipation effect is guaranteed.

During installation, the air duct fixing piece 5 is firstly fixed on the heat dissipation host 1 by using the fan fixing bolt 6, the sealing sponge 2 is temporarily fixed on the periphery of the fan on the heat dissipation host 1 by using bonding or other modes, the bolt 11 welded on the folded edge of the air duct fixing piece 5 penetrates through the strip-shaped hole 9 and enables one flange surface of the air duct 3 to be tightly pressed on the sealing sponge 2, and then the nut 8 is fixed on the bolt 11 welded on the folded edge of the air duct fixing piece 5, so that the air duct 3 is preliminarily positioned.

The sealing rubber strip 4 is a cabin door sealing rubber strip 4 for a general passenger car, the sealing rubber strip 4 is installed on a flange face, close to the heat dissipation grid 7, of the air duct 3, rubber bubbles of the sealing rubber strip 4 abut against the heat dissipation grid 7 on the outer wall of the car body, no gap exists between the air duct 3 and the heat dissipation grid 7, and hot air is completely discharged through the heat dissipation grid 7.

After the components are preliminarily installed, the relative positions of the air guide cylinder fixing piece 5 and the air guide cylinder 3 are adjusted, and the nut 8 is fastened after no gap is formed between one flange surface of the air guide cylinder 3 and the sealing sponge 2 and between the other flange surface of the air guide cylinder 3 and the radiating grid 7.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the spirit and principles of the present invention, various modifications and improvements of the technical solution of the present invention will be considered by those skilled in the art within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a power battery cooling system air ducting which characterized in that: the air guide device comprises an air guide cylinder (3) arranged between a heat dissipation host (1) and a heat dissipation grid (7), the air guide cylinder (3) is of a hollow cylindrical structure with flange faces at two ends, 4-6 strip-shaped holes (9) are uniformly formed in the side face, close to the flange face at one end, of the air guide cylinder (3), an air guide cylinder fixing piece (5) penetrates through the strip-shaped holes (9) to be fixedly connected with fan fixing bolts (6) arranged on the heat dissipation host (1), sealing sponge (2) is arranged between the air guide cylinder (3) and the heat dissipation host (1), and the other end of the air guide cylinder (3) is connected with the heat dissipation grid (7) through a sealing rubber strip (4).

2. The wind guiding device of the power battery cooling system of claim 1, wherein: the inner diameters of the flange surfaces at the two ends of the air duct (3) are consistent and are larger than the outer diameter of the fan on the heat dissipation host (1).

3. The wind guiding device of the power battery cooling system of claim 1, wherein: the sealing sponge (2) is made of non-metal materials and is of a compressible annular structure with the thickness of 3-5 cm.

4. The wind guiding device of the power battery cooling system of claim 3, wherein: the inner diameter of the sealing sponge (2) is larger than the outer diameter of a fan on the heat dissipation host (1), and the outer diameter of the sealing sponge is larger than the outer diameter of flange surfaces at two ends of the air duct (3).

5. The wind guiding device of the power battery cooling system of claim 1, wherein: and a sealing rubber strip (4) is also arranged between the air duct (3) and the heat dissipation grid (7), and rubber bubbles of the sealing rubber strip (4) are in contact with the heat dissipation grid (7).

6. The wind guiding device of the power battery cooling system of claim 1, wherein: the air duct fixing piece (5) is an L-shaped steel plate, a round hole (10) is formed in one folded edge, and the diameter of the round hole (10) is larger than the outer diameter of the fan fixing bolt (6); and a bolt (11) is welded on the other folded edge, and the outer diameter of the bolt (11) is smaller than the width of the strip-shaped hole (9).

7. The wind guiding device of the heat dissipation system of the power battery as claimed in claim 6, wherein: the air guide cylinder fixing piece (5) is welded with a folded edge of a bolt (11), penetrates through the strip-shaped hole (9) from the inner side of the air guide cylinder (3) through the bolt (11), and is fixedly connected with the air guide cylinder (3) after being fastened by a nut (8).

8. The wind guiding device of the power battery cooling system of claim 1, wherein: the fan fixing bolts (6) are uniformly arranged along the outer ring of the fan of the heat dissipation main machine (1), and the fan fixing bolts (6) penetrate through the round holes (10) on the folded edges of the air guide cylinder fixing piece (5) to be fastened and then are fixedly connected with the air guide cylinder (3).

9. The wind guiding device of the power battery cooling system of claim 1, wherein: the heat dissipation grids (7) are arranged on the outer wall of the vehicle body corresponding to the heat dissipation host (1) and are heat dissipation holes in a strip shape, a circular shape or a square shape.