CN110809388A

CN110809388A - Heat dissipation module of electric vehicle controller

Info

Publication number: CN110809388A
Application number: CN201911087908.XA
Authority: CN
Inventors: 唐俊涛; 任永; 任义杰
Original assignee: Xuzhou Shangheng Industrial Control Technology Co Ltd
Current assignee: Xuzhou Shangheng Industrial Control Technology Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-02-18

Abstract

The invention discloses a heat dissipation module of an electric vehicle controller, which comprises a heat conduction module arranged inside a controller shell and a heat dissipation fan arranged outside the controller shell, wherein the heat conduction module comprises a heat absorption plate and a plurality of heat pipes arranged on the heat absorption plate. According to the invention, the heat pipe for heat conduction is arranged in the controller shell, so that heat on the circuit board is conducted to the outside of the controller shell through the heat pipe, and then airflow flow is accelerated through the cooling fan to take away the heat, thereby being beneficial to improving the cooling efficiency of the controller, protecting components on the circuit board in the controller and prolonging the service life.

Description

Heat dissipation module of electric vehicle controller

Technical Field

The invention relates to a heat dissipation module of an electric vehicle controller, and belongs to the technical field of electric vehicle controllers.

Background

At present electric vehicle controller's heat dissipation mainly relies on the aluminum hull to accomplish, but because electric vehicle controller needs dustproof and waterproof, consequently the leakproofness is better, nevertheless just leads to inside and outside not having the circulation of air, and the heat dissipation can only rely on inside air to conduct the heat to the aluminum hull, through aluminum hull and outside heat exchange. Therefore, the heat dissipation effect is not ideal, which indirectly reflects that the mos tube on the circuit board inside the electric vehicle controller is easily damaged by excessive heat, thereby causing the whole electric vehicle radiator to be scrapped. With the improvement of the requirement on environmental protection and the development of technology, the number of the electric vehicles is increased, various prices are available, and in some high-end electric vehicles, the phenomenon of poor heat dissipation of the conventional electric vehicle controller needs to be changed urgently. Therefore, an equipment module capable of improving the heat dissipation of the controller of the electric vehicle has a market demand.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the heat dissipation module of the electric vehicle controller, which can conduct heat on the circuit board to the outside of the controller shell through the heat pipe arranged in the controller shell, accelerate airflow flow through the heat dissipation fan, take away the heat, improve the heat dissipation efficiency of the controller, protect components on the circuit board in the controller and prolong the service life.

In order to achieve the above object, a heat dissipation module of an electric vehicle controller comprises a heat conduction module disposed inside a controller housing and a heat dissipation fan disposed outside the controller housing, the heat conducting module comprises a heat absorbing plate and a plurality of heat pipes arranged on the heat absorbing plate, the heat absorbing plate is tightly attached to the tin-welding surface of the circuit board in the controller shell, the heat absorbing plate is provided with a plurality of grooves for accommodating tin soldering points, one surface of the heat absorbing plate away from the circuit board is also provided with a plurality of T-shaped guide rail grooves and fixing grooves, the heat pipe is a pipe body with a rectangular cross section and is inserted in the T-shaped guide rail grooves, and is connected with the inner wall of the T-shaped guide rail groove in a sliding way, the other end of the heat pipe penetrates through the side wall of the controller shell, the heat radiation fan is fixed on the outer side wall of the controller shell and covers one end, extending out of the controller shell, of the heat pipe.

Preferably, the material of the heat absorbing plate is aluminum.

Preferably, heat-conducting silicone grease is smeared between the heat absorbing plate and the controller shell circuit board.

Preferably, the support device further comprises a support device, one end of the support device abuts against the inside of the fixing groove, the other end of the support device is in contact with the inner wall of the controller shell, the support device comprises a first support rod and a second support rod which are mutually inserted, and the outer wall of the first support rod is provided with an external thread matched with the thread of the inner wall of the second support rod.

Preferably, the two ends of the supporting device are provided with supporting discs with diameters larger than the middle connecting rod of the supporting device.

Preferably, heat-conducting silicone grease is smeared on contact surfaces of the supporting disks at two ends of the supporting device and the inner walls of the heat absorbing plate and the controller shell respectively.

Compared with the prior art, the heat pipe for heat conduction is arranged in the controller shell, so that heat on the circuit board is conducted out of the controller shell through the heat pipe, airflow flow is accelerated through the cooling fan, the heat is taken away, the cooling efficiency of the controller is improved, components on the circuit board in the controller are protected, and the service life is prolonged.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a schematic view of a heat dissipation fan according to the present invention;

FIG. 5 is a third schematic structural view of the present invention;

FIG. 6 is a fourth schematic structural view of the present invention;

FIG. 7 is a schematic view of the structure of the absorber plate of the present invention;

fig. 8 is a schematic structural diagram of the supporting device of the present invention.

In the figure: 1. the heat pipe heat dissipation device comprises a controller shell, 2 parts of a heat dissipation fan, 3 parts of a heat conduction module, 3-1 parts of a heat absorption plate, 3-1-1 parts of a T-shaped guide rail groove, 3-1-2 parts of a fixing groove, 3-2 parts of a heat pipe, 4 parts of a supporting device, 4-1 parts of a first supporting rod, 4-2 parts of a second supporting pipe.

Detailed Description

The technical solutions in the implementation of the present invention will be made clear and fully described below with reference to the accompanying drawings, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 8, a heat dissipation module for an electric vehicle controller provided in an embodiment of the present invention includes a heat conduction module 3 disposed inside a controller housing 1 and a heat dissipation fan 2 disposed outside the controller housing 1, where the heat conduction module 3 includes a heat absorption plate 3-1 and a plurality of heat pipes 3-2 disposed on the heat absorption plate 3-1, the heat absorption plate 3-1 is closely attached to a soldering surface of a circuit board inside the controller housing 1, the heat absorption plate 3-1 is provided with a plurality of grooves for accommodating soldering points, one surface of the heat absorption plate 3-1 away from the circuit board is further provided with a plurality of T-shaped guide rail grooves 3-1-1 and fixing grooves 3-1-2, the heat pipes 3-2 are tubular bodies with rectangular cross sections, the heat pipes 3-2 are inserted into the T-shaped guide rail grooves 3-1-1, and is connected with the inner wall of the T-shaped guide rail groove 3-1-1 in a sliding manner, the other end of the heat pipe 3-2 penetrates through the side wall of the controller shell 1, and the heat radiation fan 2 is fixed on the outer side wall of the controller shell 1 and covers one end, extending out of the controller shell 1, of the heat pipe 3-2.

Preferably, the heat absorbing plate 3-1 is made of aluminum.

Preferably, heat-conducting silicone grease is coated between the heat absorbing plate 3-1 and the circuit board of the controller shell 1.

Preferably, the controller shell further comprises a supporting device 4, one end of the supporting device 4 abuts against the fixing groove 3-1-2, the other end of the supporting device is in contact with the inner wall of the controller shell 1, the supporting device 4 comprises a first supporting rod 4-1 and a second supporting rod 4-2 which are mutually inserted, and the outer wall of the first supporting rod 4-1 is provided with an external thread matched with the thread of the inner wall of the second supporting rod 4-2.

Preferably, the two ends of the supporting device 4 are provided with supporting discs with diameters larger than the middle connecting rod of the supporting device 4.

Preferably, heat-conducting silicone grease is smeared on the contact surfaces of the supporting disks at the two ends of the supporting device 4 and the inner walls of the heat absorbing plate 3-1 and the controller shell 1 respectively.

The working process is as follows: and connecting a power line of the cooling fan 2 with a power supply line extending out of the circuit board in the controller shell 1, and starting the cooling fan 2. When components on the circuit board, particularly mos tubes, work to generate heat, the heat is conducted to the heat absorbing plate 3-1 from the circuit board, the heat pipe 3-2 absorbs the heat on the heat absorbing plate 3-1 and then gasifies heat absorbing liquid inside, the hot gas extends out of the controller shell 1 from the heat pipe 3-2 to the heat pipe 3-2, and the hot gas drives airflow to exchange the heat under the action of the heat radiating fan 2, so that the hot gas in the part, extending out of the controller shell 1, of the heat pipe 3-2 is liquefied and then flows back to the end, close to the heat absorbing plate 3-1, of the heat pipe 3-2 again under the capillary action. The above-mentioned processes are repeated and circulated, so that the heat quantity on the circuit board 1 can be taken away. Meanwhile, the supporting device 4 can play a role in fixing the heat absorbing plate 3-1 and conducting heat.

In summary, in the invention, the heat pipe 3-2 for heat conduction is arranged in the controller shell 1, so that heat on the circuit board is conducted to the outside of the controller shell 1 through the heat pipe 3-2, and then airflow flow is accelerated through the cooling fan 2 to take away the heat, thereby being beneficial to improving the cooling efficiency of the controller, protecting components on the circuit board in the controller and prolonging the service life.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims

1. A heat dissipation module of an electric vehicle controller is characterized by comprising a heat conduction module (3) arranged inside a controller shell (1) and a heat dissipation fan (2) arranged outside the controller shell (1), wherein the heat conduction module (3) comprises a heat absorption plate (3-1) and a plurality of heat pipes (3-2) arranged on the heat absorption plate (3-1), the heat absorption plate (3-1) is tightly attached to a tin welding surface of a circuit board inside the controller shell (1), the heat absorption plate (3-1) is provided with a plurality of grooves for accommodating tin welding points, one surface of the heat absorption plate (3-1) far away from the circuit board is further provided with a plurality of T-shaped guide rail grooves (3-1-1) and fixing grooves (3-1-2), and the heat pipes (3-2) are pipe bodies with rectangular cross sections, the heat pipe (3-2) is inserted in the T-shaped guide rail groove (3-1-1) and is connected with the inner wall of the T-shaped guide rail groove (3-1-1) in a sliding mode, the other end of the heat pipe (3-2) penetrates through the side wall of the controller shell (1), and the cooling fan (2) is fixed on the outer side wall of the controller shell (1) and covers one end, extending out of the controller shell (1), of the heat pipe (3-2).

2. The heat dissipation module of the electric vehicle controller as claimed in claim 1, wherein the heat absorption plate (3-1) is made of aluminum.

3. The heat dissipation module of the electric vehicle controller as claimed in claim 2, wherein a heat conductive silicone grease is applied between the heat absorption plate (3-1) and the circuit board of the controller housing (1).

4. The heat dissipation module of the electric vehicle controller according to claim 1, wherein heat conductive silicone grease is coated between the heat pipe (3-2) and the T-shaped guide rail groove.

5. The heat dissipation module of the electric vehicle controller according to claim 1, further comprising a support device (4), wherein one end of the support device (4) abuts against the fixing groove (3-1-2), and the other end of the support device is in contact with the inner wall of the controller housing (1), the support device (4) comprises a first support rod (4-1) and a second support rod (4-2) which are inserted into each other, and the outer wall of the first support rod (4-1) is provided with an external thread which is matched with the thread of the inner wall of the second support rod (4-2).

6. The heat dissipation module of the electric vehicle controller according to claim 1, wherein the supporting disc with a diameter larger than the connecting rod in the middle of the supporting device (4) is arranged at the two ends of the supporting device (4).

7. The heat dissipation module of the electric vehicle controller according to claim 6, wherein the contact surfaces of the support discs at the two ends of the support device (4) and the inner walls of the heat absorption plate (3-1) and the controller housing (1) respectively are coated with heat conductive silicone grease.