New energy automobile hub motor heat dissipation efficiency device and method

Abstract

The invention discloses a new energy automobile hub motor heat dissipation efficiency device and method.The new energy automobile hub motor heat dissipation efficiency device comprises a new energy automobile hub mechanism, the new energy automobile hub mechanism comprises a tire and a hub, and the surface of the tire is in lap joint with the surface of the hub; the invention discloses a double-shaft motor driving mechanism which comprises a motor shell, belongs to the technical field of hub motor heat dissipation, and aims at solving the problems that in the prior art, a traditional axial flow fan is prone to generating turbulence interference in a hub cavity, and the heat dissipation requirement is difficult to meet. The technical effects are that through the arrangement of the flow guide cover and the spiral flow guide plate, air flow can be in contact with the surface of the motor shell in the spiral flow direction after being gathered and accelerated through the gathering closing opening, turbulent flow interference generated in an inner cavity of a hub is avoided, the air cooling efficiency is improved, the output flow of the circulating pump is controlled according to the temperature sensor, and the working efficiency is improved. The adjustment of the heat dissipation intensity can refer to various data, and the accuracy of the adjustment of the heat dissipation intensity is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel hub motor heat dissipation, and in particular to a device and method for improving heat dissipation efficiency of a wheel hub motor of a new energy vehicle. Background Art

[0002] With the rapid development of new energy vehicles, hub motor technology has gained more and more attention and applications due to its unique advantages, such as flexible vehicle driving and improved space utilization. However, hub motors generate a lot of heat during operation. If the heat cannot be dissipated in a timely and effective manner, the motor temperature will be too high, which will affect the performance and efficiency of the motor, and may even cause motor failure and shorten the service life of the motor.

[0003] At present, the existing hub motor heat dissipation methods mainly include air cooling, liquid cooling, etc. The air cooling method has a simple structure, but limited heat dissipation capacity. The traditional axial fan is prone to turbulent interference inside the hub cavity, which is difficult to meet the heat dissipation requirements; although the liquid cooling method has a relatively good heat dissipation effect, there are problems such as poor coolant flow and unreasonable heat dissipation channel design, resulting in low heat dissipation efficiency, a relatively complex system, and high cost. Therefore, a new energy vehicle hub motor heat dissipation efficiency device and method are proposed. Summary of the invention

[0004] To this end, the present invention provides a device and method for improving the heat dissipation efficiency of a hub motor of a new energy vehicle to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: According to a first aspect of the present invention, a device and method for improving the heat dissipation efficiency of a hub motor of a new energy vehicle include a hub mechanism of a new energy vehicle, wherein the hub mechanism of the new energy vehicle includes a tire and a hub, and the surface of the tire overlaps the surface of the hub; a dual-axis motor drive mechanism, wherein the dual-axis motor drive mechanism includes a motor housing, an inner wall of the motor housing is fixedly connected to a stator, a rotor is arranged inside the motor housing, and a brake disc is fixedly connected to the surface of the rotor shaft; an air cooling mechanism, wherein the air cooling mechanism includes a mounting member, one side of the mounting member is fixedly connected to a guide cover, one end of the guide cover is provided with a gathering opening, and the inner wall of the guide cover is fixedly connected to a spiral guide plate; a liquid cooling mechanism, wherein the liquid cooling mechanism includes a circulating pump, an input end of the circulating pump is connected to a first connecting pipe, one end of the first connecting pipe is connected to a spiral heat dissipation pipe, and one end of the spiral heat dissipation pipe is connected to a second connecting pipe.

[0006] Furthermore, the dual-axis motor drive mechanism also includes a brake, one side of the brake is fixedly connected to one side of the mounting member, the inner wall of the brake overlaps the surface of the brake disc, and the surfaces of the stator and the motor housing are both provided with temperature sensors.

[0007] Furthermore, one end of the rotor shaft is fixedly connected to a hub mounting disk, one side of the hub mounting disk is fixedly connected to a fixed threaded column, and one end of the fixed threaded column is bolted to the surface of the hub.

[0008] Furthermore, a first phase change material storage cavity is provided inside the motor housing, a second phase change material storage cavity is provided outside the first phase change material storage cavity, and one side of the motor housing is fixedly connected to one side of the inner cavity of the air duct.

[0009] Furthermore, the air cooling mechanism also includes spiral heat sinks and fan blades, and the surface of the spiral heat sink is fixedly connected to the surface of the motor housing.

[0010] Furthermore, one end of the fan blade is fixedly connected to one end of the hub mounting plate of the rotor shaft, and the diameter of the fan blade is smaller than the inner diameter of the gathered opening.

[0011] Furthermore, the liquid cooling mechanism also includes a spiral flow cavity, which is opened inside the motor housing, and the surface of the spiral heat dissipation pipe is fixedly connected to the inner wall of the air guide cover.

[0012] Furthermore, one end of the second connecting pipe is connected to one end of the spiral flow chamber, the other end of the spiral flow chamber is connected to a third connecting pipe, and one end of the third connecting pipe is connected to an output end of the circulation pump.

[0013] Further, S1: vehicle start-up and initial monitoring; when the new energy vehicle is started, the temperature sensor starts to detect the temperature in real time and transmits the temperature data to the control system. The control system determines the working state of the motor according to the initial temperature data. If the motor temperature is low, the control system controls the circulation pump to operate at a low flow rate; S2: Heat dissipation control during normal driving. During normal driving of the vehicle, as the motor's workload changes, the temperature sensor provides real-time feedback on the change in motor temperature. The fan blades change with the rotor speed, and the air cooling effect increases with the increase in vehicle speed. When the motor temperature rises, the control system gradually increases the flow of the circulation pump according to the preset control strategy, and continuously transfers the heat inside the motor through the coolant to improve the heat dissipation efficiency. S3: Heat dissipation under high-load conditions; When the vehicle is in high-load conditions, such as acceleration, climbing, etc., the workload of the hub motor increases and the heat generated increases. When the motor temperature is higher than the second preset temperature threshold, the control system adjusts the flow of the circulation pump to the maximum value, and the phase change material gradually absorbs heat and melts into liquid to assist in heat dissipation, ensuring that the motor can be cooled quickly and the normal operation of the motor is guaranteed; S4: Vehicle stops and heat dissipation stops; when the vehicle stops, the motor stops working, the fan blades stop rotating, the temperature sensor continues to monitor the motor temperature, the control system controls the circulation pump to continue running, and uses natural wind to cool the spiral heat dissipation pipe. At the same time, the phase change material gradually dissipates heat and solidifies. When the motor temperature drops to a safe temperature range, the control system controls the circulation pump to stop running, ending the heat dissipation process.

[0014] The present invention has the following advantages: through the arrangement of the air cooling mechanism, during the operation of the vehicle, when the rotor drives the wheel hub to rotate, the fan blades are synchronously driven to rotate, so that the rotation speed of the fan blades changes with the driving speed of the vehicle, and the effect of automatically adjusting the air cooling intensity is achieved; at the same time, through the arrangement of the air guide cover and the spiral guide plate, the airflow can be gathered and accelerated through the gathering and closing opening, and then contact the surface of the motor housing along the spiral flow direction, so as to avoid turbulent interference in the inner cavity of the wheel hub, thereby improving the air cooling efficiency; and the output flow of the circulating pump can be controlled according to the temperature sensor, so that the adjustment of the heat dissipation intensity can refer to a variety of data, thereby enhancing the accuracy of the heat dissipation intensity adjustment; the arrangement of the spiral heat dissipation pipe can also continuously use the coolant to transfer the heat inside the motor during the air cooling and heat dissipation process, and use the air cooling airflow to cool the coolant, thereby further improving the efficiency of the air cooling and heat dissipation; the arrangement of the phase change material can assist in absorbing the heat in the motor by melting and absorbing heat under high load conditions, thereby further improving the efficiency and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front three-dimensional structural schematic diagram of a new energy vehicle hub motor heat dissipation efficiency device and method provided by the present invention.

[0016] Figure 2 A schematic side perspective structural diagram of a new energy vehicle hub motor heat dissipation efficiency device and method provided by the present invention.

[0017] Figure 3 This is a schematic diagram of the exploded side structure of a new energy vehicle hub motor heat dissipation efficiency device and method provided by the present invention.

[0018] Figure 4 This is a schematic diagram of the exploded structure of a new energy vehicle hub motor heat dissipation efficiency device and method provided by the present invention.

[0019] Figure 5 A schematic diagram of the decomposed structure of the air cooling mechanism of a new energy vehicle hub motor heat dissipation efficiency device and method provided by the present invention.

[0020] Figure 6 This is a schematic diagram of the structure of a partial air cooling mechanism of a new energy vehicle hub motor heat dissipation efficiency device and method provided by the present invention.

[0021] Figure 7A schematic diagram of the exploded structure of a dual-axis motor drive mechanism of a new energy vehicle hub motor heat dissipation efficiency device and method provided by the present invention.

[0022] Figure 8 A schematic cross-sectional structure diagram of a device and method for improving the heat dissipation efficiency of a hub motor for a new energy vehicle provided by the present invention.

[0023] Fig. 9 A schematic cross-sectional structural diagram of a liquid cooling mechanism of a new energy vehicle hub motor heat dissipation efficiency device and method provided by the present invention.

[0024] Fig.10 A flowchart of the steps of a method for using a new energy vehicle hub motor heat dissipation efficiency device provided by the present invention.

[0025] In the figure: 11, tire; 12, wheel hub; 21, motor housing; 22, stator; 23, rotor; 24, brake disc; 25, brake; 26, wheel hub mounting disc; 27, fixed threaded column; 28, first phase change material storage chamber; 29, second phase change material storage chamber; 31, mounting piece; 32, air guide cover; 33, gathering and closing; 34, spiral air guide plate; 35, spiral heat sink; 36, fan blade; 41, circulation pump; 42, first connecting pipe; 43, spiral heat dissipation pipe; 44, second connecting pipe; 45, spiral flow chamber; 46, third connecting pipe. DETAILED DESCRIPTION

[0026] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0027] like Figures 1 to 10As shown, a new energy vehicle hub motor heat dissipation efficiency device and method in the embodiment of the first aspect of the present invention includes a new energy vehicle hub mechanism, the new energy vehicle hub mechanism includes a tire 11 and a wheel hub 12, and the surface of the tire 11 overlaps the surface of the wheel hub 12; a dual-axis motor drive mechanism, the dual-axis motor drive mechanism includes a motor housing 21, the inner wall of the motor housing 21 is fixedly connected with a stator 22, the interior of the motor housing 21 is provided with a rotor 23, and the surface of the rotor 23 The shaft is fixedly connected to a brake disc 24; an air cooling mechanism, the air cooling mechanism includes a mounting member 31, one side of the mounting member 31 is fixedly connected to a guide cover 32, one end of the guide cover 32 is provided with a gathering and closing opening 33, and the inner wall of the guide cover 32 is fixedly connected to a spiral guide plate 34; a liquid cooling mechanism, the liquid cooling mechanism includes a circulating pump 41, the input end of the circulating pump 41 is connected to a first connecting pipe 42, one end of the first connecting pipe 42 is connected to a spiral heat dissipation pipe 43, and one end of the spiral heat dissipation pipe 43 is connected to a second connecting pipe 44.

[0028] In the above embodiment, it should be noted that, during use, the dual-axis motor mechanism is energized, and the rotor 23 rotates under the action of the stator 22, and the wheel hub 12 is driven to rotate through the direct transmission of the rotating shaft to drive the new energy vehicle to travel. When the new energy vehicle is started, the temperature inside and on the surface of the motor housing 21 is detected by the temperature sensor, and at the same time, the rotor 23 drives the fan blades 36 to rotate. Through the rotation of the fan blades 36, air is transported to the gathering and closing opening 33. Under the action of the gathering and closing opening 33, when the air flows into the air guide 32, the flow velocity is increased due to the reduction of the flow cavity. At the same time, the spiral guide plate 34 is used to guide the air to flow along a spiral path inside the air guide 32, thereby extending the retention time on the surface of the motor housing 21. At the same time, the spiral guide plate 34 is used to guide the air to avoid turbulence inside the wheel hub, so that the air cooling effect is better. The technical effect achieved by the above embodiment is: prolonging the retention time on the surface of the motor housing 21, and utilizing the spiral guide plate 34 to guide the air to avoid turbulence inside the hub, thereby achieving a better air cooling effect. Example

[0029] like Figures 1 to 10As shown, a new energy vehicle wheel hub motor heat dissipation efficiency device and method includes all the contents of Example 1. In addition, the dual-axis motor drive mechanism also includes a brake 25, one side of the brake 25 is fixedly connected to one side of the mounting member 31, the inner wall of the brake 25 overlaps the surface of the brake disc 24, the surface of the stator 22 and the motor housing 21 are both provided with temperature sensors, one end of the rotor 23 shaft is fixedly connected to the wheel hub mounting disk 26, one side of the wheel hub mounting disk 26 is fixedly connected to a fixed threaded column 27, one end of the fixed threaded column 27 is bolted to the surface of the wheel hub 12, and the interior of the motor housing 21 is provided with a first phase change material storage cavity 28, a second phase change material storage chamber 29 is arranged outside the first phase change material storage chamber 28, one side of the motor housing 21 is fixedly connected to one side of the inner chamber of the air guide cover 32, the air cooling mechanism further comprises a spiral heat sink 35 and a fan blade 36, the surface of the spiral heat sink 35 is fixedly connected to the surface of the motor housing 21, one end of the fan blade 36 is fixedly connected to one end of the hub mounting plate 26 of the rotor 23 rotating shaft principle, the diameter of the fan blade 36 is smaller than the inner diameter of the gathering closing 33, the liquid cooling mechanism further comprises a spiral flow chamber 45, the spiral flow chamber 45 is opened inside the motor housing 21, and the surface of the spiral heat dissipation pipe 43 is fixedly connected to the inner wall of the air guide cover 32; In the above embodiment, it should be noted that after the airflow flows out of the air guide cover 32, it blows toward the surface of the brake disc 24 to air-cool the brake disc 24, thereby further improving the air-cooling efficiency. At the same time, the control system starts the circulation pump 41. Under the action of the circulation pump 41, the coolant circulates in the spiral heat dissipation pipe 43 and the spiral flow cavity 45, and continuously transfers the heat inside the motor to the outside through the heat exchange between the coolant and the motor housing 21. The coolant in the spiral heat dissipation pipe 43 is cooled by air cooling, thereby further improving the heat dissipation efficiency of the air cooling. The technical effect achieved by the above embodiment is: transferring the internal heat of the motor outward, using air cooling to cool the coolant in the spiral heat dissipation pipe 43, and further improving the heat dissipation efficiency of the air cooling. Example

[0030] like Figures 1 to 10 As shown, a new energy vehicle wheel hub motor heat dissipation efficiency device and method includes all the contents of Example 2, in addition, one end of the second connecting pipe 44 is connected to one end of the spiral flow chamber 45, the other end of the spiral flow chamber 45 is connected to the third connecting pipe 46, and one end of the third connecting pipe 46 is connected to the output end of the circulation pump 41; S1: Vehicle startup and initial monitoring; when the new energy vehicle is started, the temperature sensor starts to detect the temperature in real time and transmits the temperature data to the control system. The control system determines the working state of the motor based on the initial temperature data. If the motor temperature is low, the control system controls the circulation pump to run at a low flow rate; S2: Heat dissipation control during normal driving. During normal driving of the vehicle, as the motor's workload changes, the temperature sensor provides real-time feedback on the change in motor temperature. The fan blades change with the rotor speed, and the air cooling effect increases with the increase in vehicle speed. When the motor temperature rises, the control system gradually increases the flow of the circulation pump according to the preset control strategy, and continuously transfers the heat inside the motor through the coolant to improve the heat dissipation efficiency. S3: Heat dissipation under high-load conditions; When the vehicle is in high-load conditions, such as acceleration, climbing, etc., the workload of the hub motor increases and the heat generated increases. When the motor temperature is higher than the second preset temperature threshold, the control system adjusts the flow of the circulation pump to the maximum value, and the phase change material gradually absorbs heat and melts into liquid to assist in heat dissipation, ensuring that the motor can be cooled quickly and the normal operation of the motor is guaranteed; S4: Vehicle stops and heat dissipation stops; when the vehicle stops, the motor stops working, the fan blades stop rotating, the temperature sensor continues to monitor the motor temperature, the control system controls the circulation pump to continue running, and uses natural wind to cool the spiral heat dissipation pipe. At the same time, the phase change material gradually dissipates heat and solidifies. When the motor temperature drops to a safe temperature range, the control system controls the circulation pump to stop running, ending the heat dissipation process.

[0031] In the above embodiment, it should be noted that when the vehicle is under high load, the temperature sensor detects that the motor temperature is too high, and the control system controls the circulation pump 41 to start the maximum flow, increase the heat transfer speed, and improve the heat dissipation effect. At the same time, the phase change materials in the first phase change material storage chamber 28 and the second phase change material storage chamber 29 melt and absorb heat, which assists in controlling the motor temperature and makes the heat dissipation effect better. After the vehicle stops driving, the motor stops working, the fan blades 36 stop rotating, and the temperature sensor continues to monitor the internal temperature of the motor. The control system controls the circulation pump 41 to continue running, and uses natural wind to cool the spiral heat dissipation pipe 43. At the same time, the phase change material gradually dissipates heat and solidifies. When the motor temperature drops to a safe temperature range, the control system controls the circulation pump 41 to stop running, ending the heat dissipation process.

[0032] The technical effect achieved by the above embodiment is that the phase change materials in the first phase change material storage cavity 28 and the second phase change material storage cavity 29 melt and absorb heat, which assists in controlling the temperature of the motor and achieves better heat dissipation effect.

[0033] Working principle: During use, the dual-axis motor mechanism is energized, and the rotor 23 rotates under the action of the stator 22, and the wheel hub 12 is driven to rotate through the direct transmission of the rotating shaft to drive the new energy vehicle to travel. When the new energy vehicle is started, the temperature inside and on the surface of the motor housing 21 is detected by the temperature sensor, and at the same time, the rotor 23 drives the fan blades 36 to rotate. Through the rotation of the fan blades 36, the air is transported to the gathering opening 33. Under the action of the gathering opening 33, when the air flows into the air guide 32, the flow velocity is increased due to the reduction of the flow cavity. At the same time, the spiral guide plate 34 is used to guide the air to flow along a spiral path inside the air guide 32, thereby extending the retention time on the surface of the motor housing 21. At the same time, the spiral guide plate 34 is used to guide the air to avoid turbulence in the wheel hub, thereby making the air cooling effect better. After the airflow flows out of the air guide 32, it blows to the surface of the brake disc 24 to cool the brake disc 24, thereby further improving the air cooling efficiency. At the same time, the control system starts the circulating pump 41. When the circulating pump 41 Under the action of, the coolant circulates in the spiral heat dissipation pipe 43 and the spiral flow cavity 45, and the heat inside the motor is continuously transferred outward through the heat exchange between the coolant and the motor housing 21. The coolant in the spiral heat dissipation pipe 43 is cooled by air cooling, and the heat dissipation efficiency of the air cooling is further improved. When the vehicle is under high load, the temperature sensor detects that the motor temperature is too high, and the control system controls the circulation pump 41 to start the maximum flow rate, increase the heat transfer speed, and improve the heat dissipation effect. At the same time, the phase change materials in the first phase change material storage cavity 28 and the second phase change material storage cavity 29 melt and absorb heat, which assists in controlling the motor temperature and makes its heat dissipation effect better. After the vehicle stops driving, the motor stops working, the fan blades 36 stop rotating, the temperature sensor continues to monitor the internal temperature of the motor, and the control system controls the circulation pump 41 to continue running, and uses natural wind to cool the spiral heat dissipation pipe 43. At the same time, the phase change material gradually dissipates heat and solidifies. When the motor temperature drops to a safe temperature range, the control system controls the circulation pump 41 to stop running, ending the heat dissipation process.

Claims

1. A device for improving the heat dissipation efficiency of a hub motor of a new energy vehicle, characterized in that: include A new energy vehicle wheel hub mechanism, the new energy vehicle wheel hub mechanism comprising a tire (11) and a wheel hub (12), the surface of the tire (11) overlapping the surface of the wheel hub (12); A dual-axis motor drive mechanism, the dual-axis motor drive mechanism comprising a motor housing (21), the inner wall of the motor housing (21) being fixedly connected to a stator (22), a rotor (23) being arranged inside the motor housing (21), and a brake disc (24) being fixedly connected to the surface of a rotating shaft of the rotor (23); An air cooling mechanism, the air cooling mechanism comprising a mounting member (31), a guide cover (32) being fixedly connected to one side of the mounting member (31), a gathering opening (33) being provided at one end of the guide cover (32), and a spiral guide plate (34) being fixedly connected to the inner wall of the guide cover (32); A liquid cooling mechanism, the liquid cooling mechanism comprising a circulation pump (41), the input end of the circulation pump (41) being connected to a first connecting pipe (42), one end of the first connecting pipe (42) being connected to a spiral heat dissipation pipe (43), and one end of the spiral heat dissipation pipe (43) being connected to a second connecting pipe (44).

2. A device for improving heat dissipation efficiency of a hub motor for a new energy vehicle according to claim 1, characterized in that: The dual-axis motor drive mechanism further comprises a brake (25), one side of the brake (25) being fixedly connected to one side of the mounting member (31), an inner wall of the brake (25) overlapping the surface of the brake disc (24), and temperature sensors being arranged on the surfaces of the stator (22) and the motor housing (21).

3. A new energy vehicle wheel hub motor heat dissipation efficiency device according to claim 2, characterized in that: One end of the rotating shaft of the rotor (23) is fixedly connected to a hub mounting disc (26), one side of the hub mounting disc (26) is fixedly connected to a fixing threaded column (27), and one end of the fixing threaded column (27) is bolted to the surface of the hub (12).

4. A new energy vehicle wheel hub motor heat dissipation efficiency device according to claim 3, characterized in that: A first phase change material storage cavity (28) is provided inside the motor housing (21), a second phase change material storage cavity (29) is provided outside the first phase change material storage cavity (28), and one side of the motor housing (21) is fixedly connected to one side of the inner cavity of the air guide cover (32).

5. A device for improving heat dissipation efficiency of a hub motor for a new energy vehicle according to claim 4, characterized in that: The air cooling mechanism further comprises a spiral cooling fin (35) and a fan blade (36), and the surface of the spiral cooling fin (35) is fixedly connected to the surface of the motor housing (21).

6. A device for improving heat dissipation efficiency of a hub motor for a new energy vehicle according to claim 5, characterized in that: One end of the fan blade (36) is fixedly connected to one end of the hub mounting plate (26) of the rotor (23) rotating shaft, and the diameter of the fan blade (36) is smaller than the inner diameter of the gathering opening (33).

7. A device for improving heat dissipation efficiency of a hub motor for a new energy vehicle according to claim 1, characterized in that: The liquid cooling mechanism further comprises a spiral flow cavity (45), wherein the spiral flow cavity (45) is opened inside the motor housing (21), and the surface of the spiral heat dissipation pipe (43) is fixedly connected to the inner wall of the air guide cover (32).

8. The heat dissipation efficiency device for a new energy vehicle hub motor according to claim 7, characterized in that: One end of the second connecting tube (44) is connected to one end of the spiral flow chamber (45), the other end of the spiral flow chamber (45) is connected to a third connecting tube (46), and one end of the third connecting tube (46) is connected to the output end of the circulation pump (41).

9. A method for using a new energy vehicle hub motor heat dissipation efficiency device as described in claims 1-8, characterized in that: include S1: Vehicle startup and initial monitoring; when the new energy vehicle is started, the temperature sensor starts to detect the temperature in real time and transmits the temperature data to the control system. The control system determines the working state of the motor based on the initial temperature data. If the motor temperature is low, the control system controls the circulation pump to run at a low flow rate; S2: Heat dissipation control during normal driving. During normal driving of the vehicle, as the motor's workload changes, the temperature sensor provides real-time feedback on the change in motor temperature. The fan blades change with the rotor speed, and the air cooling effect increases with the increase in vehicle speed. When the motor temperature rises, the control system gradually increases the flow of the circulation pump according to the preset control strategy, and continuously transfers the heat inside the motor through the coolant to improve the heat dissipation efficiency. S3: Heat dissipation under high-load conditions; When the vehicle is in high-load conditions, such as acceleration, climbing, etc., the workload of the hub motor increases and the heat generated increases. When the motor temperature is higher than the second preset temperature threshold, the control system adjusts the flow of the circulation pump to the maximum value, and the phase change material gradually absorbs heat and melts into liquid to assist in heat dissipation, ensuring that the motor can be cooled quickly and the normal operation of the motor is guaranteed; S4: Vehicle stops and heat dissipation stops; when the vehicle stops, the motor stops working, the fan blades stop rotating, the temperature sensor continues to monitor the motor temperature, the control system controls the circulation pump to continue running, and uses natural wind to cool the spiral heat dissipation pipe. At the same time, the phase change material gradually dissipates heat and solidifies. When the motor temperature drops to a safe temperature range, the control system controls the circulation pump to stop running, ending the heat dissipation process.

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