TWM615751U - Heat dissipation structure for power control unit of electric vehicle - Google Patents

Abstract

This creation is related to a heat dissipation structure of an electric vehicle power control unit. The electric vehicle has at least a frame unit and a body cover unit covering the frame unit; the frame unit has a rear frame portion adjacent to the rear frame A power control unit is provided at the part, and the power control unit is electrically connected to a drive motor that can provide the power source of the electric vehicle, and is electrically connected to a battery that provides power to the drive motor; at least a part of the power control unit is located in the Between the rear frame portion and the body cover unit, the body cover unit is provided with an air inlet that can introduce external cooling air, and the air outlet of the air inlet is facing the power control unit, and the air inlet is connected to the power control unit. There is a wind guide member between the units; this allows the upper and lower parts of the power control unit to be blown and dissipated by the cooling wind at the same time, so that the power control unit can dissipate heat uniformly as a whole, thereby ensuring the power control The service life and use effect of the unit.

Description

Heat dissipation structure of electric vehicle power control unit

This creation is related to a heat dissipation structure of the power control unit of an electric vehicle, especially a method of raising the upper and lower parts of the power control unit of an electric vehicle to be blown by the cooling wind at the same time to dissipate heat, so that the power control unit can dissipate heat uniformly as a whole. Furthermore, the heat dissipation structure of the electric vehicle power control unit that ensures the service life, use effect and heat dissipation effect of the power control unit.

Regarding the heat dissipation issue of the power controller for controlling the power operation of electric vehicles, the applicant applied for the patent case No. TWM601696 "The Heat Dissipation Structure of Electric Vehicle Controller", which of course has enabled the controller to obtain better heat dissipation effects. The applicant adheres to the creative spirit of excellence and further improves the heat dissipation effect of the power radiator of the electric vehicle, and prays that the power controller of the electric vehicle can obtain more heat dissipation efficiency.

The main purpose of this creation is to provide a heat dissipation structure for the power control unit of electric vehicles, so that the upper and lower parts of the power control unit are simultaneously blown and dissipated by the cooling wind, so that the power control unit can dissipate heat uniformly as a whole to ensure The service life and use effect of the power control unit.

For this reason, the first main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle, the electric vehicle having at least a frame unit and a body cover unit that covers the frame unit; the frame unit It has a rear frame portion, a power control unit is provided adjacent to the rear frame portion, and the power control unit is electrically connected to a drive motor that can provide the power source of the electric vehicle, and is electrically connected to a battery that provides power to the drive motor ; At least a part of the power control unit is located between the rear frame portion and the body cover unit, the body cover unit is provided with an air inlet that can introduce external cooling air, and the air outlet of the air inlet is facing the The power control unit is provided with a wind guide member between the air inlet and the power control unit.

To this end, the second main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle. The wind guide member is arranged on the side of the vehicle body cover unit between the air inlet and the power control unit. Cover the car body.

To this end, the third main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle. Connecting part.

For this reason, the fourth main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle, and an avoiding recess is provided on the outside of the contact point between the connecting portion and the wind guide surface.

For this reason, the fifth main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle, and a guide rib is protruding from the wind guide surface.

To this end, the sixth main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle, and the guide ribs are arranged obliquely downward toward the air inlet by the aforementioned power control unit.

To this end, the seventh main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle. The air inlet is tilted.

To this end, the eighth main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle. The guide ribs are preferably inclined at 28 degrees.

To this end, the ninth main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle. The ends are flush, and the guiding rib is not connected to the connecting portion at the end facing the aforementioned air inlet.

To this end, the tenth main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle. The guide ribs are protruded from the aforementioned wind guide surface toward the aforementioned side car body cover.

For this reason, the eleventh main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle. More than 50% of the width of the cooling air flow channel formed by the body cover.

To this end, the twelfth main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle. The total length of the guide rib is about 50 to 90% of the total length of the aforementioned air guide surface. .

To this end, the 13th main technical means of this creation is to provide a heat dissipation structure for the power control unit of an electric vehicle. The fixed ears are locked and fixed on the side car body cover.

For this reason, the 14th main technical means of this creation is to provide an electric vehicle In the heat dissipation structure of the power control unit, the wind guide member is respectively provided with an upper wind collecting rib and a lower wind collecting rib on two sides of the wind guide member facing the vertical direction of the vehicle body.

The effect of this creation through the first main technical means is that the upper and lower parts of the power control unit can be blown and dissipated by the cooling wind at the same time, so that the power control unit can be uniformly integrated. Heat dissipation to ensure the service life and use effect of the power control unit.

The effect of this creation through the second main technical means is that it can facilitate the assembly of the wind guide member.

The effect that this creation can achieve by the third main technical means is that it can allow the outside cooling wind to smoothly enter the wind guide member and be guided.

The effect of this creation through the fourth main technical means is that it can avoid interference between the wind guide member and other parts.

The effect of this creation through the 5th to 12th main technical means is that the upper and lower parts of the power control unit can be blown and dissipated by the cooling wind at the same time, so that the power control unit can be integrated Uniform heat dissipation ensures the service life and use effect of the power control unit.

The effect of this creation through the 13th main technical means is that it can facilitate the assembly of the wind guide member.

The effect of this creation through the 14th main technical means is that the upper and lower parts of the power control unit can be blown and dissipated by the cooling wind at the same time, so that the power control unit can be uniformly integrated. Heat dissipation to ensure the use of the power control unit Use life and use effect.

1: Electric car

11: Frame unit

111: head tube

112: Supervisor

113: side frame tube

113L: Left foot tube

113R: Right foot tube

114L, 114R: left and right rising frame

115L, 115R: left and right rear frame

1151: Locking Department

116: rear swingarm

12: Steering mechanism

13: Fork unit

14: front wheel

15: rear wheel

16: Passenger seat

17: body cover unit

171: car head cover

172: Front body cover

173: Knee Mask

174: Foot Pedal

175: bottom cover

176: Side car body cover

177: Central body cover

18: storage box

19: Footrest

2: drive motor

3: battery

4: Power Control Unit (PCU)

4a: upper part

4b: lower part

5: Air inlet

6: Wind guide member

6a: The first set of wind ribs

6b: Next set of wind ribs

61: Locking ears

62: Wind guide surface

63: Connection part

64: Avoid the recess

65: guide rib

A: Housing space

B: Cooling air flow path

[Figure 1] is a schematic diagram of the power control unit of the electric vehicle of this creation.

[Figure 2] is a schematic diagram of the heat dissipation action of the power control unit of the electric vehicle of this invention.

[Figure 3] is a three-dimensional view of the wind guide component of this creation.

[Fig. 4] is a top sectional view of Fig. 1.

In order to make it easier for your reviewers to understand the structure of this creation and the effects that can be achieved, I would like to explain it with the diagram below;

First, please refer to Figures 1 and 2 for the heat dissipation structure of the electric vehicle power control unit of this invention. The electric vehicle 1 has a frame unit 11, the frame unit 11 has a head pipe 111, and a head pipe 111 is provided above the The steering mechanism 12 is connected to a front fork unit (front shock absorber) 13 below the steering mechanism 12, and a front wheel 14 is pivoted below the front fork unit 13, and the frame unit 11 faces the rear of the vehicle body from the head pipe 111 and A main pipe 112 is provided downwards, and a pair of left and right side frame pipes 113 are extended toward the rear of the vehicle body. The side frame pipe 113 includes a pair of left and right foot pipe parts 113L and 113R adjacent to the main pipe 112 (Only the right foot tube part 113R is drawn in the figure. The left and right systems of this creation are based on the right hand of the driver after riding on the electric vehicle 1 and the left hand as the left side, the same below), by the left and right foot tubes A pair of left and right lifting frame parts 114L, 114R (only the right lifting frame part 114R is drawn in the figure) extend toward the rear direction of the vehicle body, and the left and right lifting frame parts 114L, 114R face the vehicle body A pair of left and right rear frame parts 115L, 115R extending from the rear (Figure In the formula, only the right rear frame part 115R) is drawn; a pair of left and right rear rocker arms 116 are arranged between the lower sides of the left and right rising frame parts 114L and 114R, and the rear rocker arm 116 is pivotally provided with the rear wheel 15. A drive motor 2 is provided on the side or front side of the rear wheel 15, and the drive motor 2 drives the rear wheel 15 to move the electric vehicle 1 forward; behind the steering mechanism 12 and above the rear wheel 15 There is a seat portion 16, the seat portion 16 and the steering mechanism 12 maintain a distance; the outer periphery of the electric vehicle 1 is provided with a body cover unit 17, the body cover unit 17 has a head cover covering the steering mechanism 12 171, a front body cover 172 provided under the head cover 171 and covering the front end of the vehicle body, and a knee cover 173 provided behind the front body cover 172, are provided in the steering mechanism 12 and the seating portion 16 A bottom cover 175 is arranged under the pedal 174. The electric vehicle 1 is provided with side body covers 176 on two sides below the seating portion 16. The front end of the seating portion 16 A central vehicle body cover 177 is provided below, and a storage box 18 is provided under the seat portion 16, and the upper part of the storage box 18 is shielded by the seat portion 16; the side vehicle body cover 176 and the central vehicle body cover 177 can be made in one piece or made of separate pieces.

As shown in Figures 1 and 2, the footrest 174 can form a footrest 19 for the rider to rest on; the footrest 174, the bottom cover 175, and the left foot The pedal tube portion 113L and the right foot pedal tube portion 113R can define an accommodating space A, and the battery 3 is accommodated in the accommodating space A. The drive motor 2 can also be arranged behind the accommodating space A when this creation is implemented End; the frame unit 11, the right rear frame portion 115R is provided with at least one locking portion 1151, the locking portion 1151 is locked with a power control unit 4 that can control the drive motor 2, the power control unit 4 outside It is completely shielded by the side body cover 176 of the body cover unit 17. Furthermore, the power control unit 4 is installed in the frame unit 11 Between the right rear frame portion 115R and the side body cover 176 of the body cover unit 17, at least a part of the power control unit 4 can be located on the right rear frame portion of the frame unit 11 accordingly 115R and the side body cover 176 of the body cover unit 17; the battery 3 is electrically connected to the power control unit 4 and the drive motor 2, thereby providing power to the drive motor 2. The power control unit 4 to control the drive motor 2 to drive the rear wheel 15 to rotate, and at the same time, the electrical connection line (not shown in the figure) between the power control unit 4 and the drive motor 2 connects the power control unit 4 to the rear of the vehicle body smoothly. The power control unit 4 and the drive motor 2; the power control unit 4 can be implemented by a control device provided on the steering mechanism 12, the control device is implemented with a rotatable grip glove to start the drive motor 2 Then, the rear wheel 15 is driven to rotate, and the electric vehicle 1 is driven to travel.

As shown in FIGS. 1, 2, and 4, an air inlet 5 is provided between the side body cover 176 and the center body cover 177 of the body cover unit 17. Furthermore, the air inlet 5 is located at the center. On the car body cover 177 and adjacent to the side car body cover 176, this creation is implemented by opening the air inlet 5 on both sides of the central car body cover 177, and the air outlet of the air inlet 5 faces the power control unit 4 ; With this, when the electric vehicle 1 is driving, the outside fresh cooling air can be blown from the air inlet 5 and toward the rear of the vehicle body, when the outside fresh cooling air enters the two sides of the vehicle body from the air inlet 5; the air inlet The side car body cover 176 between the power control unit 4 and the power control unit 4 locks a wind guide member 6 toward the inner side of the car body.

As shown in Figures 1, 2, 3, and 4, the wind guide member 6 is provided with an upper wind collecting rib 6a and a lower wind collecting rib 6b on the two sides of the vehicle body in the vertical direction. The wind rib 6b is attached to the side car body cover 176 along the end to ensure that an air channel is formed. The wind guide member 6 is provided with a plurality of locking ears on the outer peripheral edges of the upper wind collecting rib 6a and the lower wind collecting rib 6b. 61, The wind guide member 6 is locked and fixed on the side car body cover 176 by the plurality of locking ears 61; the wind guide member 6 is provided with a wind guide surface 62 facing the side car body cover 176 side. The surface 62 is located between the upper air-collecting rib 6a and the lower air-collecting rib 6b. The front end of the air guiding surface 62, that is, the end adjacent to the air inlet 5, is provided with a connecting portion 63, and the connecting portion 63 is connected to the air inlet 5 On the rear side, when the outside cold air enters the air inlet 5, it can be directly guided into the air guiding surface 62. The connecting portion 63 and the air guiding surface 62 are provided with an avoiding recess 64 on the outside of the junction. When the air guide member 6 is locked to the side car body cover 176, interference with the right ascending frame portion 114R of the frame unit 11 can be avoided; a guide rib 65 is protruded on the air guide surface 62, and the guide rib 65 is set downwardly by the power control unit 4 toward the air inlet 5. More specifically, the guide rib 65 is inclined downward from the power control unit 4 toward the air inlet at an inclination angle of about 5 degrees to 60 degrees. 5 Tilt setting, where 28 degrees is the preferred angle; the guide rib 65 is flush with the wind guide surface 62 at the end facing the power control unit 4, and the guide The rib 65 is not connected to the connecting portion 63 at the end facing the air inlet 5; the guiding rib 65 is protruded from the air guiding surface 62 toward the side car body cover 176, and the guiding rib 65 is formed by the air guiding surface 62 The height of the protrusion is about 50% or more of the width of the cooling air channel B formed by the air guiding surface 62 and the side car body cover 176, so that the guiding effect of the guiding rib 65 for guiding the cooling air can be improved; It should be mentioned that the total length of the guide rib 65 in the front and rear direction of the car body is about 50 to 90% of the total length of the wind guide surface 62 in the front and rear direction of the car body, thereby further enhancing the guide. The guiding effect of the guiding rib 65. The side car body cover 176 between the air inlet 5 and the power control unit 4 locks an air guide member 6 toward the inner side of the car body. When the electric car 1 is running, the outside fresh cooling air can be removed The air inlet 5 is blown toward the rear of the vehicle body. After the outside cooling wind enters through the air inlet 5, it can be concentrated to the power control by the air guiding surface 62 of the air guiding member 6 The unit 4 flows and is guided by the guide rib 65 to guide a part of the cooling wind upward to the upper part of the power control unit 4, so that the upper part 4a and the lower part 4b of the power control unit 4 can be simultaneously received The cooling air blows and dissipates heat, so that the power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the service life and use effect of the power control unit 4.

The main effect of this creation is that the electric vehicle 1 has at least a frame unit 11 and a body cover unit 17 covering the frame unit 11; the frame unit 11 has a left foot tube 113L and a right foot The tube portion 113R, the right rear frame portion 115R is provided with a power control unit 4, the power control unit 4 is electrically connected to a drive motor 2 that can provide a power source for the electric vehicle 1, and is electrically connected to provide the drive motor 2 Power battery 3; The body cover unit 17 has at least a center body cover 177 and a side body cover 176, and at least a part of the power control unit 4 is located on the right rear frame portion 115R and the side body cover 176 In between, the central car body cover 177 is provided with an air inlet 5 that can introduce external cooling air, and the air outlet of the air inlet 5 faces the power control unit 4, and the air inlet 5 and the power control unit 4 are provided between There is a wind guide member 6; thereby, the upper part 4a and the lower part 4b of the power control unit 4 can be blown and dissipated by the cooling wind at the same time, so that the power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the power The service life and use effect of the control unit 4.

The second effect of the present invention is that the wind guide member 6 is arranged on the side car body cover 176 of the car body cover unit 17 between the air inlet 5 and the power control unit 4; thereby, the guide can be facilitated The assembly of the wind member 6.

The third effect of this creation is that the wind guide member 6 is provided with a wind guide surface 62 toward the side of the car body cover unit 17, and the front end of the wind guide surface 62 is provided with a connecting portion 63; thereby, the outside can be cooled Wind energy enters the wind guide member 6 smoothly and is guided.

The fourth effect of the present invention is that the connecting portion 63 and the wind guide surface 62 are provided with avoiding recesses 64 on the outside of the contact point; thereby, interference between the wind guide member 6 and other parts can be avoided.

The fifth effect of this creation is that a guiding rib 65 is protrudingly provided on the air guiding surface 62; thereby, the upper part 4a and the lower part 4b of the power control unit 4 can be simultaneously blown and dissipated by the cooling wind, thereby being able to dissipate heat. The power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the service life and use effect of the power control unit 4.

The sixth effect of this creation is that the aforementioned power control unit 4 is tilted downward toward the air inlet 5 through the guide rib 65; thereby, the upper part 4a and the lower part 4b of the power control unit 4 can be simultaneously received The cooling air blows and dissipates heat, so that the power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the service life and use effect of the power control unit 4.

The seventh effect of this creation is that the guide rib 65 is tilted downward from the aforementioned power control unit 4 toward the aforementioned air inlet 5 at an inclination angle of about 5 degrees to 60 degrees; The upper part 4a and the lower part 4b of the control unit 4 are simultaneously blown and dissipated by the cooling wind, so that the power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the service life and use effect of the power control unit 4.

The eighth effect of this creation is that the guide rib 65 is inclined at 28 degrees as a preferred angle; thereby, the upper part 4a and the lower part 4b of the power control unit 4 can be simultaneously blown and dissipated by the cooling wind. In this way, the power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the service life and use effect of the power control unit 4.

The ninth effect of this creation lies in the aforementioned power of the guide rib 65 The end of the control unit 4 is flush with the aforementioned air guide surface 62 at the end of the power control unit 4, and the guide rib 65 is not connected to the connecting portion 63 at the end facing the aforementioned air inlet 5; thereby, the power control can be achieved The upper part 4a and the lower part 4b of the unit 4 are simultaneously blown and dissipated by the cooling wind, so that the power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the service life and use effect of the power control unit 4.

The tenth effect of this creation is that the guide rib 65 is protruded from the aforementioned wind guide surface 62 toward the aforementioned side body cover 176; thereby, the upper part 4a and the lower part 4b of the power control unit 4 can be simultaneously exposed to The cooling air blows and dissipates heat, so that the power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the service life and use effect of the power control unit 4.

The eleventh effect of this creation is that, by the guide rib 65, the height of the protrusion of the aforementioned air guide surface 62 is approximately equal to that of the cooling air channel B formed by the aforementioned air guide surface 62 and the aforementioned side car body cover 176 50% or more of the width; thereby, the upper part 4a and the lower part 4b of the power control unit 4 can be blown and dissipated by the cooling wind at the same time, so that the power control unit 4 can dissipate heat uniformly as a whole, and then Ensure the service life and use effect of the power control unit 4.

The twelfth effect of this creation is that the total length of the guide rib 65 is approximately 50 to 90% of the total length of the aforementioned air guide surface 62; thereby, the upper part of the power control unit 4 4a and the lower part 4b are simultaneously blown and dissipated by the cooling wind, so that the power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the service life and use effect of the power control unit 4.

The thirteenth effect of this creation is that, by providing a plurality of locking ears 61 on the outer peripheral edge of the air guide member 6, the air guide member 6 is locked in position by the plurality of locking ears 61 On the side car body cover 176; thereby, the assembly of the wind guide member 6 can be facilitated.

The fourteenth effect of this creation is that the wind guide member 6 is provided with an upper wind collecting rib 6a and a lower wind collecting rib 6b on the two sides of the vehicle body in the vertical direction; thereby, the upper part of the power control unit 4 4a and the lower part 4b are simultaneously blown and dissipated by the cooling wind, so that the power control unit 4 can dissipate heat uniformly as a whole, thereby ensuring the service life and use effect of the power control unit 4.

To sum up, with the above structure, this creation can improve the lack of knowledge and achieve the desired purpose. It has indeed improved the efficacy compared with the accustomed, and it has shown that it has the requirements of novelty, practicability and progress. It is proposed by law. For the application of a new model, I would like to ask your examiner for a detailed review, and I would like to grant you the approval of the patent.

1: Electric car

11: Frame unit

111: head tube

112: Supervisor

113: side frame tube

113L: Left foot tube

113R: Right foot tube

114L, 114R: left and right rising frame

115L, 115R: left and right rear frame

1151: Locking Department

116: rear swingarm

12: Steering mechanism

13: Fork unit

14: front wheel

15: rear wheel

16: Passenger seat

17: body cover unit

171: car head cover

172: Front body cover

173: Knee Mask

174: Foot Pedal

175: bottom cover

176: Side car body cover

177: Central body cover

18: storage box

19: Footrest

2: drive motor

3: battery

4: Power Control Unit (PCU)

4a: upper part

4b: lower part

5: Air inlet

6: Wind guide member

6a: The first set of wind ribs

6b: Next set of wind ribs

61: Locking ears

62: Wind guide surface

65: guide rib

A: Housing space

Claims (14)

A heat dissipation structure for a power control unit of an electric vehicle. The electric vehicle has at least a frame unit and a body cover unit covering the frame unit; the frame unit has a rear frame portion, and a rear frame portion is provided adjacent to the rear frame portion. The power control unit is electrically connected to a drive motor that can provide the power source of the electric vehicle, and is electrically connected to a battery that provides power to the drive motor; at least a part of the power control unit is located in the rear frame portion Between the vehicle body cover unit and the vehicle body cover unit, the vehicle body cover unit is provided with an air inlet that can introduce external cooling air, and the air outlet of the air inlet is facing the power control unit. A wind guide member is arranged between the units. The heat dissipation structure of the power control unit of an electric vehicle according to claim 1, wherein the air guide member is arranged on the side body cover of the body cover unit between the air inlet and the power control unit. The heat dissipation structure of the power control unit of an electric vehicle according to claim 1 or 2, wherein the wind guide member is provided with a wind guide surface toward the side of the vehicle body cover unit, and the front end of the wind guide surface is provided with a connecting portion. The heat dissipation structure of an electric vehicle power control unit according to claim 3, wherein an avoiding recess is provided on the outer side of the contact point between the connecting portion and the wind guide surface. The heat dissipation structure of the power control unit of an electric vehicle according to claim 3, wherein a guiding rib is protrudingly provided on the air guiding surface. The heat dissipation structure of the power control unit of an electric vehicle according to claim 5, wherein the guide rib is inclined downward toward the air inlet by the aforementioned power control unit. The heat dissipation structure of an electric vehicle power control unit according to claim 6, wherein: The guiding ribs are inclined downwardly from the aforementioned power control unit toward the aforementioned air inlet at an inclination angle of approximately 5 degrees to 60 degrees. The heat dissipation structure of the power control unit of an electric vehicle according to claim 7, wherein the guide rib is preferably inclined at 28 degrees. The heat dissipation structure of the power control unit of an electric vehicle according to claim 5, wherein the guide rib is flush with the wind guide surface on the side of the power control unit toward the end of the power control unit, and the guide rib The rib is not connected to the connecting part at the end facing the aforementioned air inlet. The heat dissipation structure of an electric vehicle power control unit according to claim 5, wherein the guide rib is protruded from the aforementioned wind guide surface toward the aforementioned side body cover. The heat dissipation structure of the power control unit of an electric vehicle according to claim 5, wherein the guide rib is formed by a cooling air flow formed by the protrusion height of the aforementioned air guiding surface approximately equal to that of the aforementioned air guiding surface and the aforementioned side car body cover More than fifty percent of the width of the road. The heat dissipation structure of the power control unit of an electric vehicle according to claim 5, wherein the total length of the guide rib is about 50 to 90% of the total length of the aforementioned air guide surface. The heat dissipation structure of the power control unit of an electric vehicle according to claim 2, wherein the outer peripheral edge of the air guide member is provided with a plurality of locking ears, and the air guide member is locked and fixed in the position by the plurality of locking ears. Cover the side car body. According to the heat dissipation structure of the power control unit of an electric vehicle according to claim 1 or 2, the wind guide member is provided with an upper wind collecting rib and a lower wind collecting rib on two sides of the vehicle body in the vertical direction.

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