Electric vehicle heat dissipation device and electric vehicle

Abstract

The utility model relates to the technical field of electric vehicles, in particular to an electric vehicle heat dissipation device and an electric vehicle. The heat dissipation device comprises a grid part and a shell and is arranged on the seat cask; a central cover and a vehicle body shell are sequentially arranged along the outer side of the seat cask; the center cover and the vehicle body shell cover the whole seat cask, and the heat dissipation device is located at the joint of the center cover and the vehicle body shell. A plurality of tooth parts used for guiding flow are arranged on the grid part of the heat dissipation device at equal intervals; a channel allowing gas to flow is formed between every two adjacent tooth parts. External air is guided by the grid part to enter the inner side of the vehicle body shell, and blowing heat dissipation is carried out on the controller arranged on the seat bucket. The heat dissipation device can effectively dissipate heat of the controller, has a water retaining function, and prevents rainwater from entering the controller to affect normal operation of the controller.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to an electric vehicle heat dissipation device and an electric vehicle. Background Art

[0002] Electric vehicles are a common means of transportation. Existing electric vehicle structures are as follows: Figure 1 and 2 As shown, the basic structure of the existing electric vehicle includes a saddle assembly, a seat bucket, a body shell, a controller, a vehicle frame and a center cover; the saddle assembly and the seat bucket are assembled and fixed on the vehicle frame; the center cover and the body shell are arranged along the outer side of the seat bucket; Figure 2 As shown, the controller is generally directly mounted on the outside of the seat bucket and protected by the vehicle body shell;

[0003] During use, the operation of the controller will generate heat, but the closed body shell is not easy to dissipate heat; therefore, a ventilation structure needs to be set on the body shell, and the general ventilation structure will cause rainwater to enter, affecting the service life of the controller. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes an electric vehicle heat dissipation device and an electric vehicle. The inclined heat dissipation device is arranged to ensure the diversion and heat dissipation while being able to block rainwater to prevent rainwater from entering.

[0005] The technical solution of the utility model is a heat dissipation device for an electric vehicle, comprising a grid portion and a shell, wherein the heat dissipation device is arranged on a seat bucket; a center cover and a vehicle body shell are arranged in sequence along the outer side of the seat bucket; the center cover and the vehicle body shell cover the entire seat bucket, and the heat dissipation device is located at the connection between the center cover and the vehicle body shell;

[0006] A plurality of teeth for guiding air are arranged at equal intervals on the grid portion of the heat dissipation device; channels for gas flow are formed between adjacent teeth; external air is guided into the inner side of the vehicle body shell through the grid portion to blow air and dissipate heat to the controller arranged on the seat bucket.

[0007] Preferably, positioning grooves and positioning holes are provided on the top and bottom of the shell; the positioning grooves are used for positioning and installing with the center cover; the positioning holes are docked with the preset bolt holes on the center cover; fasteners are used to pass through the bolt holes and the positioning holes and connect with the positioning columns on the seat barrel to fix the heat dissipation device to the center cover and the seat barrel.

[0008] Preferably, a positioning piece and a slot are provided on the shell of the heat dissipation device; after the vehicle body shell is positioned by the positioning piece, a buckle is used to snap into the slot to fix it to the grid portion.

[0009] Preferably, the teeth on the grid portion include a raised portion and a flow guide portion;

[0010] The guide part is a straight plate-shaped structure, and the raised part is located at the bottom of the guide part;

[0011] The raised portion remains in a protruding state relative to the guide portion to block rainwater.

[0012] Preferably, the spacing between the channels for gas flow formed between adjacent teeth is 1.5-2 mm.

[0013] Preferably, the spacing between the channels for gas flow formed between adjacent teeth is 1.8 mm.

[0014] Preferably, the spacing between adjacent teeth is 0.3-1 mm.

[0015] Preferably, the spacing between adjacent teeth is 0.6 mm.

[0016] Preferably, the tooth portion is tilted relative to the heat dissipation device, and the heat dissipation device is tiltedly installed on the seat bucket; after installation, the angle between the guide portion on the tooth portion and the horizontal plane is 28°.

[0017] An electric vehicle comprises a saddle assembly, a seat bucket, a vehicle body shell, a controller, a vehicle frame and a center cover. The heat dissipation device is installed at the connection between the center cover and the vehicle body shell and covers the seat bucket. The heat dissipation device dissipates heat from the controller fixed on the seat bucket by diversion and shields rainwater. The seat bucket is fixed on the vehicle frame, and the saddle assembly is rotatably connected to the seat bucket.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] The utility model is provided with a heat dissipation device, and the teeth on the grid portion of the heat dissipation device include a raised portion and a guide portion; the guide portion is a straight plate-shaped structure, and the raised portion is located at the bottom of the guide portion. When encountering rain, since the inlet of the heat dissipation device is tilted downward as a whole, most of the rain will be blocked by the shell; a small part of the rain will be further blocked by the raised portion, and only a small amount of water vapor will follow the airflow into the inner side of the vehicle body shell; and the controller itself is provided with a shell, and water vapor will not affect it. The heat dissipation device in the utility model can effectively dissipate heat for the controller, and also has a water-blocking function to prevent rain from entering and affecting the normal operation of the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a part of the structure of an electric vehicle in the prior art;

[0021] Figure 2 It is a schematic diagram of the installation position structure of an electric vehicle controller in the prior art;

[0022] Figure 3This is a schematic diagram of the installation position structure of the heat dissipation device in the utility model;

[0023] Figure 4 It is a structural schematic diagram of the heat dissipation device in the utility model;

[0024] Figure 5 It is a schematic diagram of the enlarged structure of the A part of the heat dissipation device in the utility model;

[0025] Figure 6 This is a dimensional relationship diagram of the teeth in the heat dissipation device of the utility model.

[0026] Figure numerals: 1. saddle assembly; 2. seat barrel; 3. vehicle body shell; 4. heat dissipation device; 41. positioning groove; 42. positioning hole; 43. positioning piece; 44. slot; 45. tooth portion; 451. raised portion; 452. air guide portion; 5. vehicle frame; 6. center cover; 7. controller. DETAILED DESCRIPTION

[0027] Example 1

[0028] like Figure 3 As shown, the utility model proposes a heat dissipation device for an electric vehicle, comprising a grid portion and a shell, wherein a heat dissipation device 4 is arranged on a seat bucket 2; a center cover 6 and a vehicle body shell 3 are arranged in sequence along the outer side of the seat bucket 2; the center cover 6 and the vehicle body shell 3 cover the entire seat bucket 2, and the heat dissipation device 4 is located at the connection between the center cover 6 and the vehicle body shell 3;

[0029] like Figure 4 As shown, a plurality of teeth 45 for guiding air are evenly spaced on the grid portion of the heat dissipation device 4; channels for gas flow are formed between adjacent teeth 45; external air is guided into the inner side of the vehicle body shell 3 through the grid portion, and the controller 7 arranged on the seat bucket 2 is cooled by blowing air.

[0030] Positioning grooves 41 and positioning holes 42 are provided on the top and bottom of the shell; the positioning groove 41 is used for positioning and installing with the center cover 6; the positioning hole 42 is docked with the preset bolt hole on the center cover 6; fasteners are used to pass through the bolt holes and the positioning holes 42 and connect with the positioning columns on the seat bucket 2 to fix the heat dissipation device 4 to the center cover 6 and the seat bucket 2, and positioning pieces 43 and card slots 44 are provided on the shell of the heat dissipation device 4; after the body shell 3 is positioned by the positioning piece 43, it is snapped into the card slot 44 with a buckle to be fixed to the grid part.

[0031] like Figure 5As shown, the teeth 45 on the grid portion include a protrusion 451 and a guide portion 452; the guide portion 452 is a straight plate-like structure, and the protrusion 451 is located at the bottom of the guide portion 452; the protrusion 451 is kept protruding relative to the guide portion 452 to block rainwater. The spacing between the channels for gas flow formed between adjacent teeth 45 is 1.5-2mm, preferably 1.8mm ( Figure 6 The spacing between adjacent teeth 45 is 0.3-1mm, preferably 0.6mm ( Figure 6 The tooth portion 45 is tilted relative to the heat sink 4, and the heat sink 4 is tilted on the seat bucket 2; after installation, the angle between the guide portion 452 on the tooth portion 45 and the horizontal plane is 28° ( Figure 6 ).

[0032] A control experiment was conducted on products equipped with the heat dissipation device of the present embodiment, the heat dissipation device in the prior art, and products without the heat dissipation device installed; wherein, the product equipped with the heat dissipation device of the present embodiment is numbered 1, and its A value is 0.6 mm, its B value is 1.8 mm, and its C value is 28°; the product equipped with the heat dissipation device in the prior art is numbered 2, and its A value is 1.5 mm, its B value is 1.8 mm, and its C value is 15°; the product without the heat dissipation device installed is numbered 3; the ambient temperature is selected to be 25 degrees Celsius, 30 degrees Celsius, and 35 degrees Celsius, and the three groups of products are placed on the test bench respectively, and the speeds are accelerated to 25 km / h, 30 km / h, and 40 km / h in turn, and the temperature of the controller is collected after being kept at a constant speed for 10 minutes; the results are shown in Table 1 below;

[0033] Table 1 Controller temperature comparison table at different ambient temperatures and different speed levels

[0034]

[0035]

[0036] The vehicle to be tested is moved to the simulated precipitation test area, and after passing through the test area at speeds of 25km / h, 30km / h, and 40km / h, check whether water splashes on the surface of the controller; this embodiment uses the QYJY-503 artificial rainfall simulation system to carry out simulation experiments, and the simulated precipitation test area simulates light rain, moderate rain, and heavy rain environments respectively; the results are shown in Table 2 below;

[0037] Table 2 Comparison of water splashing on the surface of different speed levels and rainfall controllers

[0038]

[0039] By analyzing the above experimental data, the heat dissipation device of this embodiment, under an environment of 25 degrees Celsius and a vehicle speed of 40 km / h, the controller temperature drops by 14.38% compared with the product using the heat dissipation device of the prior art, and drops by 35.01% compared with the product without the heat dissipation device installed. The controller surface temperature drops significantly and has a waterproof function. Further analysis shows that when the vehicle body is moving, the external airflow enters the inner side of the vehicle body shell 3 through the gas flow channel formed between the teeth 45, so that the running controller 7 can be cooled by blowing air. Since the heat dissipation device 4 is tilted as a whole and a protrusion 451 is provided on the tooth 45, when encountering rain, since the inlet of the heat dissipation device 4 is tilted downward as a whole, most of the rain will be blocked by the shell; a small part of the rain will be further blocked by the protrusion 451, and only a small amount of water vapor will follow the airflow into the inner side of the vehicle body shell 3; and the controller 7 itself is provided with a shell, and the water vapor will not affect it.

[0040] Example 2

[0041] The utility model proposes an electric vehicle, comprising a saddle assembly 1, a seat bucket 2, a vehicle body shell 3, a controller 7, a vehicle frame 5 and a center cover 6. The heat dissipation device 4 in Example 1 is installed at the connection between the center cover 6 and the vehicle body shell 3, and covers the seat bucket 2. The heat dissipation device 4 dissipates heat for the controller 7 fixed on the seat bucket 2 through diversion, and shields rainwater; the seat bucket 2 is fixed on the vehicle frame 5, and the saddle assembly 1 is rotatably connected to the seat bucket 2.

[0042] In this embodiment, the heat dissipation device 4 can effectively dissipate the heat of the controller 7 and also has a water-blocking function to prevent rainwater from entering and affecting the normal operation of the controller 7.

[0043] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An electric vehicle heat dissipation device, comprising a grid portion and a housing, characterized in that: The heat dissipation device (4) is arranged on the seat bucket (2); a center cover (6) and a vehicle body shell (3) are arranged in sequence along the outer side of the seat bucket (2); the center cover (6) and the vehicle body shell (3) cover the entire seat bucket (2), and the heat dissipation device (4) is located at the connection between the center cover (6) and the vehicle body shell (3); A plurality of teeth (45) for guiding air are arranged at equal intervals on the grid portion of the heat dissipation device (4); channels for air flow are formed between adjacent teeth (45); external air is guided through the grid portion into the inner side of the vehicle body shell (3) to blow air and dissipate heat to the controller (7) arranged on the seat bucket (2).

2. The electric vehicle heat dissipation device according to claim 1, characterized in that: The top and bottom of the shell are both provided with a positioning groove (41) and a positioning hole (42); the positioning groove (41) is used for positioning and installing with the center cover (6); the positioning hole (42) is connected with a bolt hole preset on the center cover (6); a fastener is used to pass through the bolt hole and the positioning hole (42) and connect with the positioning column on the seat bucket (2), so as to fix the heat dissipation device (4) with the center cover (6) and the seat bucket (2).

3. The electric vehicle heat dissipation device according to claim 2, characterized in that: A positioning piece (43) and a clamping slot (44) are provided on the shell of the heat dissipation device (4); after the vehicle body shell (3) is positioned by the positioning piece (43), it is clamped into the clamping slot (44) using a buckle to be fixed to the grid portion.

4. The electric vehicle heat dissipation device according to claim 1, characterized in that: The tooth portion (45) on the grid portion includes a protruding portion (451) and a flow guide portion (452); The guide portion (452) is a flat plate-shaped structure, and the protrusion (451) is located at the bottom of the guide portion (452); The raised portion (451) remains in a raised state relative to the guide portion (452) to block rainwater.

5. The electric vehicle heat dissipation device according to claim 4, characterized in that: The spacing between the channels for gas flow formed between adjacent teeth (45) is 1.5-2 mm.

6. The electric vehicle heat dissipation device according to claim 5, characterized in that: The spacing between the channels for gas flow formed between adjacent teeth (45) is 1.8 mm.

7. The electric vehicle heat dissipation device according to claim 4, characterized in that: The spacing between adjacent teeth (45) is 0.3-1 mm.

8. The electric vehicle heat dissipation device according to claim 7, characterized in that: The spacing between adjacent teeth (45) is 0.6 mm.

9. The electric vehicle heat dissipation device according to claim 4, characterized in that: The tooth portion (45) is arranged to be tilted relative to the heat dissipation device (4), and the heat dissipation device (4) is installed tilted on the seat bucket (2); after installation, the angle between the guide portion (452) on the tooth portion (45) and the horizontal plane is 28 degrees.

10. An electric vehicle, comprising a saddle assembly (1), a seat bucket (2), a vehicle body shell (3), a controller (7), a vehicle frame (5) and a center cover (6), characterized in that: A heat dissipation device (4) as described in any one of claims 1 to 9 is installed at the connection between the center cover (6) and the vehicle body shell (3) and covers the seat bucket (2). The heat dissipation device (4) dissipates heat from a controller (7) fixed on the seat bucket (2) by diversion and blocks rainwater; the seat bucket (2) is fixed on the vehicle frame (5), and the saddle assembly (1) is rotatably connected to the seat bucket (2).

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