Heat dissipation structure of main engine of electric vehicle

Abstract

The utility model provides an electric vehicle host heat dissipation structure which comprises a motor shell, a spiral heat dissipation structure is arranged on the outer side wall of the motor shell, the outer side wall of the motor shell is movably connected with a flow guide cover through an elastic buckle device, and a high-efficiency heat dissipation structure is arranged on the outer side wall of the flow guide cover. The outer side wall of the motor shell is rotationally connected with a motor output shaft, and the outer side wall of the motor output shaft is rotationally connected with a fan. The spiral heat dissipation structure is additionally arranged, the spiral flow guide grooves extend in the axial direction and form the included angle of 30-45 degrees with the driving direction of a vehicle, the spiral acceleration effect is formed through airflow in the driving process, and the air flow speed of the heat dissipation face is increased; by additionally arranging the flow guide cover, wind resistance is balanced, and hot air exhaust is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation for electric vehicle main units, and in particular to a heat dissipation structure for electric vehicle main units. Background Technology

[0002] When riding an electric vehicle at high speed for a long time, the motor will get hot due to the discharge of a large current. However, if the temperature exceeds 60-70 degrees Celsius, it is abnormal and will damage the motor. The insulation of the motor's enameled wire may melt, causing a short circuit. The magnets will lose magnetism at high temperatures, causing the motor to be scrapped.

[0003] Existing electric vehicle drive systems (such as motors and controllers) mostly rely on active cooling (such as fans and liquid cooling) or simple air duct designs for heat dissipation, which has the following problems: high energy consumption, as active cooling devices such as fans consume electrical energy and shorten the driving range; uneven heat dissipation, as traditional heat sinks have a simple layout and heat tends to accumulate in local areas; and complex structure, as liquid cooling systems require additional piping and pumps, resulting in high installation and maintenance costs. Utility Model Content

[0004] To address the issues that existing electric vehicle drive systems, such as motors and controllers, rely heavily on active cooling methods like fans, liquid cooling, or simple duct designs for heat dissipation, which result in high energy consumption (fans and other active cooling devices consume electricity, shortening driving range), uneven heat dissipation (traditional heat sinks have simple layouts, causing heat to accumulate in localized areas), and complex structures (liquid cooling systems require additional piping and pumps, leading to high installation and maintenance costs), the following solutions are needed.

[0005] The electric vehicle host heat dissipation structure provided by this utility model adopts the following technical solution:

[0006] A heat dissipation structure for an electric vehicle host includes a motor housing, a spiral heat dissipation structure on the outer side wall of the motor housing, a flow guide shroud movably connected to the outer side wall of the motor housing via an elastic snap-fit ​​device, a high-efficiency heat dissipation structure on the outer side wall of the flow guide shroud, a motor output shaft rotatably connected to the outer side wall of the motor housing, and a fan rotatably connected to the outer side wall of the motor output shaft.

[0007] Furthermore, the spiral heat dissipation structure includes a spiral guide groove, and the outer side wall of the motor housing is provided with a spiral guide groove, the bottom cross section of which is "V" shaped;

[0008] Furthermore, the elastic buckle device includes an elastic buckle block and a buckle groove. The outer side wall of the motor housing is provided with a buckle groove, and the inner side wall of the flow guide is fixedly connected with an elastic buckle block. One end of the elastic buckle block is triangular, and the elastic buckle block is used in conjunction with the buckle groove.

[0009] Furthermore, the high-efficiency heat dissipation device includes an air inlet, a guide plate, and an air outlet. An air inlet is provided at one end of the air guide shroud, and the cross-sectional shape of the air inlet is arc-shaped. A guide plate is provided at the edge of the air inlet. An air outlet is provided at the other end of the air guide shroud, and the cross-sectional shape of the air outlet is honeycomb-shaped.

[0010] Furthermore, the inner wall of the flow guide is filled with ceramic fiber insulation cotton for heat insulation.

[0011] Furthermore, the edge of the flow guide is provided with a rubber sealing strip.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] By adding a spiral heat dissipation structure, the spiral guide channel extends axially and forms an angle of 30° to 45° with the vehicle's direction of travel, utilizing the spiral acceleration effect of airflow during travel to enhance the air velocity on the heat dissipation surface; the bottom of the spiral guide channel is "V" shaped, increasing the heat dissipation area and guiding the airflow to form turbulence, thereby improving heat exchange efficiency; by adding multiple sets of air intake holes at the front of the fairing, with the angle of the air intake guide plate decreasing by 5° from front to back, the air intake volume and wind resistance at different vehicle speeds are balanced; the rear of the fairing is equipped with honeycomb-shaped air outlet holes, which reduce airflow noise through the porous structure, while using the negative pressure effect to accelerate the discharge of hot air. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the motor housing structure of this utility model;

[0019] Figure 6 This is a cross-sectional schematic diagram of the elastic buckle device for the motor housing of this utility model.

[0020] As shown in the figure: 1-Guide shield, 11-Air inlet, 12-Air guide plate, 13-Air outlet, 2-Motor housing, 20-Elastic buckle structure, 21-Spiral guide groove, 22-Fan, 23-Motor output shaft, 24-Elastic block, 25-Slot. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-6The present invention will be further described in detail below:

[0022] This utility model discloses a quick-release and detachable structure for an electric vehicle battery compartment, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, an electric vehicle host heat dissipation structure includes a motor housing 2, with a spiral heat dissipation structure on the outer wall of the motor housing 2. A guide shroud 1 is movably connected to the outer wall of the motor housing 2 via an elastic snap-fit ​​device. A high-efficiency heat dissipation structure is provided on the outer wall of the guide shroud 1. A motor output shaft 23 is rotatably connected to the outer wall of the motor housing 2, and a fan 22 is rotatably connected to the outer wall of the motor output shaft 23. In this embodiment, by adding a spiral heat dissipation structure, the spiral guide groove 21 extends axially and forms an angle of 30° to 45° with the vehicle's driving direction, utilizing the spiral acceleration effect of airflow during driving to enhance the airflow velocity on the heat dissipation surface. By adding the guide shroud 1, wind resistance is balanced, and hot air is expelled more quickly.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the spiral heat dissipation structure includes a spiral guide groove 2121. The spiral guide groove 2121 is formed on the outer side wall of the motor housing 2, and the bottom cross section of the spiral guide groove 2121 is "V" shaped. In this embodiment, by adding a spiral heat dissipation structure, the spiral guide groove 21 extends axially and forms an angle of 30° to 45° with the vehicle's driving direction, utilizing the spiral acceleration effect of the airflow during driving to enhance the airflow velocity on the heat dissipation surface. The bottom of the spiral guide groove 21 is "V" shaped, which increases the heat dissipation area and guides the airflow to form turbulence, thereby improving the heat exchange efficiency.

[0024] like Figure 6 As shown, the elastic buckle device includes an elastic buckle block 24 and a buckle groove 25. The outer side wall of the motor housing 2 is provided with the buckle groove 25, and the inner side wall of the flow guide 1 is fixedly connected with the elastic buckle block 24. One end of the elastic buckle block 24 is triangular, and the elastic buckle block 24 and the buckle groove 25 are used in conjunction. In this embodiment, by adding the elastic buckle device, it is convenient to install the flow guide 1 on the motor housing 2.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the high-efficiency heat dissipation device includes an air inlet 11, a guide plate 12, and an air outlet 13. An air inlet 11 with a circular arc cross-section is provided at one end of the shroud 1, and a guide plate 12 is provided along the edge of the air inlet 11. An air outlet 13 with a honeycomb cross-section is provided at the other end of the shroud 1. The inner wall of the shroud 1 is filled with ceramic fiber insulation cotton for heat insulation. A rubber sealing strip is provided along the edge of the shroud 1. In this embodiment, multiple sets of [missing information - likely referring to specific components or features] are added to the front end of the shroud 1. The air intake 11 has a deflector plate angle that decreases by 5° from front to back to balance the air intake volume and wind resistance at different vehicle speeds. The rear end of the deflector 1 is provided with a honeycomb-shaped air outlet 13, which reduces airflow noise through the porous structure and accelerates the exhaust of hot air by utilizing the negative pressure effect. By filling it with ceramic fiber heat insulation cotton, the heat of the motor housing 2 is prevented from being directly conducted to the deflector 1, avoiding high-temperature deformation and improving durability. By setting a rubber sealing strip on the edge of the deflector 1, external dust or moisture is prevented from entering the motor through the connection gap.

[0026] The implementation principle of this utility model embodiment is as follows:

[0027] The air deflector 1 is installed into the slot 25 on the motor housing 2 using an elastic buckle device. During the electric vehicle's operation, multiple sets of air intake holes 11 are added to the front end of the air deflector 1, with the angle of the air intake hole 11 decreasing by 5° from front to back, balancing the air intake volume and wind resistance at different vehicle speeds. A honeycomb-shaped air outlet 13 is provided at the rear end of the air deflector 1, which reduces airflow noise through the porous structure and accelerates the discharge of hot air using the negative pressure effect. The spiral guide groove 21 extends axially and forms an angle of 30° to 45° with the vehicle's driving direction, using the spiral acceleration effect of the airflow during driving to enhance the airflow speed on the heat dissipation surface. The bottom of the spiral guide groove 21 is "V" shaped, which increases the heat dissipation area and guides the airflow to form turbulence, improving heat exchange efficiency and achieving better heat dissipation.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure for an electric vehicle host, comprising a motor housing (2), characterized in that, The outer wall of the motor housing (2) is provided with a spiral heat dissipation structure. The outer wall of the motor housing (2) is movably connected to a flow guide (1) through an elastic buckle device. The outer wall of the flow guide (1) is provided with a high-efficiency heat dissipation structure. The outer wall of the motor housing (2) is rotatably connected to a motor output shaft (23). The outer wall of the motor output shaft (23) is rotatably connected to a fan (22).

2. The heat dissipation structure for an electric vehicle host according to claim 1, characterized in that: The spiral heat dissipation structure includes a spiral guide groove (21)(21), and the outer side wall of the motor housing (2) is provided with a spiral guide groove (21)(21), and the bottom cross section of the spiral guide groove (21)(21) is "V" shaped.

3. The heat dissipation structure for an electric vehicle host according to claim 1, characterized in that: The elastic buckle device includes an elastic buckle block (24) and a buckle groove (25). The outer side wall of the motor housing (2) is provided with a buckle groove (25), and the inner side wall of the flow guide (1) is fixedly connected with an elastic buckle block (24). One end of the elastic buckle block (24) is triangular, and the elastic buckle block (24) and the buckle groove (25) are used together.

4. The heat dissipation structure for an electric vehicle host according to claim 1, characterized in that: The high-efficiency heat dissipation structure includes an air inlet (11), a guide plate (12), and an air outlet (13). An air inlet (11) is provided at one end of the air guide shroud (1), and the cross-sectional shape of the air inlet (11) is arc-shaped. A guide plate (12) is provided on the edge of the air inlet (11). An air outlet (13) is provided at the other end of the air guide shroud (1), and the cross-sectional shape of the air outlet (13) is honeycomb-shaped.

5. The heat dissipation structure for an electric vehicle host according to claim 1, characterized in that: The inner wall of the flow guide (1) is filled with ceramic fiber insulation cotton for heat insulation.

6. The heat dissipation structure for an electric vehicle host according to claim 1, characterized in that: The edge of the flow guide (1) is provided with a rubber sealing strip.

Images