Heat dissipation control method and system for electric drive and electric control system of new energy heavy truck and storage medium

Abstract

The invention discloses a heat dissipation control method and system for an electric drive and electric control system of a new energy heavy truck and a storage medium, and relates to the field of new energy automobiles. The method comprises the following steps: acquiring node temperature and flow of each to-be-cooled element and a working mode of a cooling module in real time; when it is detected that the temperature of any node is not within the temperature range of the node in the current working mode, the master controller sends a working mode switching instruction; according to the working mode switching instruction, each module of the thermal management system executes a delayed upshift or advanced downshift program, if the temperature of a node is not within the temperature range of the node in the current working mode after the delayed upshift or advanced downshift instruction is executed, the working mode is switched, and otherwise, the current working mode is kept unchanged. According to the invention, better cooling performance can be provided for the electric drive and electric control system, the energy consumption and cost of the whole vehicle are reduced, and economic maximization is realized.

Description

Technical Field

[0001] The present invention belongs to the field of new energy vehicles, and in particular relates to a heat dissipation control method, system and storage medium for an electric drive and electronic control system of a new energy heavy-duty truck. Background Art

[0002] With the development of my country's socioeconomic landscape, problems such as ecological degradation, urban environmental pollution, and energy crises are becoming increasingly severe. In recent years, with the government's vigorous support for the development of new energy vehicles, relevant research and public promotion have achieved certain results. However, the development of new energy vehicles still faces numerous challenges, among which vehicle thermal management is a pressing issue. As the power output component of electric vehicles, the operating temperature of the electric motor has a significant impact on its lifespan and performance. Excessive motor temperature can cause motor degradation, which in turn affects driving stability and safety. Currently, liquid cooling is the primary cooling method for electric motors and electronic controls. This involves connecting components such as the motor, motor control, and all-in-one controller in series via a water circuit. A water pump drives the coolant through a circulation loop. The coolant exchanges heat with the power components, flows through a radiator, and then exchanges heat with the outside air, removing heat generated within the electric drive and control system. The coolant then flows through the water pump to complete the cooling cycle, ensuring that the components of the electric drive system maintain a constant operating temperature.

[0003] The traditional electric drive electronic control cooling system architecture has a one-way circulation loop. When the entire vehicle adopts the thermal management control strategy under this architecture, if the temperature of a certain electrical component is too high while the temperatures of other electrical components are normal and low, the thermal management system will be forced to control the water pump and cooling fan of the cooling circuit to increase the speed, increasing the energy consumption of the thermal management system, which is not conducive to the refined management of the electric drive system; when it is necessary to cool and dissipate heat in sequence according to the differences in the sensitive temperatures of the components, the traditional architecture cannot provide refined temperature control according to the real-time heat dissipation needs of the heat dissipation components, resulting in high energy consumption. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: how to achieve refined heat dissipation regulation of a vehicle thermal management system and reduce energy consumption.

[0005] To achieve the above object, the technical solution of the present invention is:

[0006] In a first aspect, the present invention discloses a heat dissipation control method for an electric drive and control system of a new energy heavy-duty truck, comprising:

[0007] Real-time acquisition of the node temperature of each component to be cooled and the working mode of the cooling module;

[0008] When it is detected that the temperature of any node is not within the temperature range of the node in the current working mode, the main controller issues a working mode switching instruction;

[0009] According to the working mode switching instruction, each module of the thermal management system executes the delayed upshift or early downshift program. If after the delayed upshift or early downshift instruction is executed, the temperature of the node is not within the temperature range of the node in the current working mode, the working mode is switched; otherwise, the current working mode remains unchanged.

[0010] The temperature and flow of the element nodes include: the motor coolant inlet temperature and outlet temperature; the motor controller coolant inlet temperature and outlet temperature; the all-in-one controller coolant inlet temperature and outlet temperature.

[0011] The working modes of the heat dissipation module include at least three modes: a first gear, a second gear and a third gear, wherein the first gear is a low gear and the third gear is a high gear. The higher the gear, the stronger the heat dissipation effect of the heat dissipation module.

[0012] The execution step of the delayed upshift instruction includes: when the system is in a heating stage, when it is detected that the temperature of any node exceeds the upper temperature threshold of the node in the current working mode, controlling the solenoid valve to adjust the flow of each heat dissipation component; if the adjusted temperature of each node is lower than the upper temperature threshold of the node in the current working mode, maintaining the current working mode unchanged; if the temperature of any node after the adjustment is higher than the upper temperature threshold of the node, switching the working mode of the heat dissipation module to a higher gear;

[0013] The temperature rising stage means that the temperature of each node at the current moment is greater than the temperature at the previous moment.

[0014] The execution step of the early downshift instruction includes: when the system is in a cooling stage, when it is detected that the temperature of any node is lower than the temperature threshold of the node in the current working mode, switching the working mode of the heat dissipation module to a low gear, controlling the solenoid valve to adjust the flow of each heat dissipation component, if the temperature of each node after adjustment is lower than the upper temperature threshold of the node in the current working mode, keeping the working mode unchanged; if the temperature of any node after adjustment is higher than the upper temperature threshold of the node in the current working mode, switching the working mode of the heat dissipation module back to a higher gear;

[0015] The cooling stage refers to the temperature of each node at a current moment being lower than the temperature at a previous moment.

[0016] The working mode of the heat dissipation module further includes: maintaining the gear position, when the temperature of each node is within the temperature range of the node in the current working mode, maintaining the current working mode unchanged.

[0017] In the second aspect, the present invention discloses a thermal management system for an electric drive and electronic control system of a new energy heavy-duty truck, which is based on the heat dissipation control method of the electric drive and electronic control system of a new energy heavy-duty truck of the first aspect, including: a solenoid valve, a heat dissipation module and a master controller.

[0018] The solenoid valve is a four-channel proportional solenoid valve used to adjust the flow through the motor controller, motor, and all-in-one controller.

[0019] In a third aspect, the present invention discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the heat dissipation control method of the electric drive and electronic control system of a new energy heavy-duty truck described in the first aspect.

[0020] In a fourth aspect, the present invention discloses a computer program product, including a computer program / instruction, characterized in that when the computer program / instruction is executed by a processor, the steps of the heat dissipation control method of the electric drive and electronic control system of the new energy heavy-duty truck described in the first aspect are implemented.

[0021] Beneficial effects: The motor electronic control cooling system is an important part of the vehicle system. The thermal management system of the present invention can provide better cooling performance for the electric drive electronic control system, while achieving lower fan and water pump speeds, reducing the impact of thermal management system component vibration on the vehicle, and improving NVH performance; adopting a refined gear system working mode, dynamically adjusting the thermal management system working mode according to the heat dissipation requirements during the actual operation of the vehicle, and through the flow distribution strategy of improving the cooling performance of components that exceed the gear and reducing the cooling performance of components with surplus gears, the system can run at a lower gear for as long as possible, reducing the energy consumption and cost of the vehicle, and achieving economic maximization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Flowchart of the heat dissipation control method of the electric drive and control system of a new energy heavy truck according to the present invention;

[0023] Figure 2 Structural diagram of the new energy heavy truck thermal management system of the present invention;

[0024] In the figure: 1-fan; 2-water pump; 3-water supply three-way valve; 4-expansion tank; 5-four-channel proportional solenoid valve; 6-all-in-one controller; 8-motor controller; 9-motor; 10-radiator; 71-first three-way valve; 72-second three-way valve. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0026] Example 1

[0027] A thermal management system for an electric drive and control system of a new energy heavy-duty truck, comprising: a master controller, a heat dissipation module, a four-channel proportional solenoid valve 5, an expansion tank 4, a water supply tee 3, a motor 9, a motor controller 8, an all-in-one controller 6, a first three-way valve 71, and a second three-way valve 72;

[0028] The main controller (not shown) is respectively connected to the heat dissipation module and the four-channel proportional solenoid valve 5 for controlling the working mode of the heat dissipation module and adjusting the opening of the four-channel proportional solenoid valve 5 .

[0029] The heat dissipation module includes: a water pump 2, a fan 1 and a radiator 10. The fan 1 and the radiator 10 form a cooling unit.

[0030] The inlet of the four-channel proportional solenoid valve 5 is connected to the water pump 2, and the three outlets are directly or indirectly connected to the motor 9, the motor controller 8 and the all-in-one controller 6 respectively; the four-channel proportional solenoid valve 5 is used to adjust the flow rate of the coolant output to each heat dissipation device.

[0031] The interfaces of the first three-way valve 71 are respectively connected to the four-channel proportional solenoid valve 5, the all-in-one controller 6 and the motor controller 8, and the interfaces of the first three-way valve 72 are respectively connected to the four-channel proportional solenoid valve 5, the motor 9 and the motor controller 8; the first three-way valve 71 and the second three-way valve 72 can achieve the effect of confluence.

[0032] The water outlet of the cooling unit is connected to the first water inlet of the water supply tee 3; the second water inlet of the water supply tee 3 is connected to the water outlet of the expansion water tank 4; the water outlet of the water supply tee 3 is connected to the water inlet of the water pump 2, and the water pump 2 is used to drive the coolant.

[0033] The system also includes several temperature sensors and flow sensors (not shown in the figure) for monitoring the temperature and flow of each node of the device to be cooled.

[0034] Example 2

[0035] A heat dissipation control method for an electric drive and electronic control system of a new energy heavy-duty truck comprises the following steps:

[0036] Real-time acquisition of the node temperature, flow rate and working mode of the heat dissipation module of each component to be cooled;

[0037] When it is detected that the temperature of any node is not within the temperature range of the node in the current working mode, the main controller issues a working mode switching instruction;

[0038] According to the working mode switching instruction, each module of the thermal management system executes the delayed upshift or early downshift program. If after the delayed upshift or early downshift instruction is executed, the temperature of the node is still not within the temperature range of the node in the current working mode, the working mode is switched; otherwise, the current working mode remains unchanged.

[0039] The node temperature and flow of each heat dissipation component include: motor controller 8 coolant inlet temperature T in1 , All-in-one controller 6 Coolant inlet temperature T in2 、Motor 9 coolant inlet temperature T in3 , Motor controller 8 coolant outlet temperature T out1 , All-in-one controller 6 coolant outlet temperature T out2 , Motor 9 coolant outlet temperature T out3 , motor controller 8 coolant flow q1, all-in-one controller 6 coolant flow q2, motor 9 coolant flow q3.

[0040] In this embodiment, whether to adjust the gear of the water pump 2 and the fan 1 is determined according to the node temperature state of each heat-dissipating component of the electric drive and electronic control system. The gears are divided into first gear, second gear and third gear, and different gears correspond to different speeds of the water pump 2 and the fan 1; the first gear is a low gear, and the third gear is a high gear. The higher the gear, the stronger the heat dissipation effect of the heat dissipation module.

[0041] When the system is in the heating stage, when it is detected that the temperature of any node exceeds the upper temperature threshold of the node in the current working mode, the four-channel proportional solenoid valve 5 is controlled to adjust the flow of each heat dissipation component. If the adjusted temperature of each node is lower than the upper temperature threshold of the node in the current working mode, the current working mode is maintained unchanged; if the temperature of any node after adjustment is higher than the upper temperature threshold of the node, the working mode of the heat dissipation module is switched to a higher level.

[0042] When the system is in the cooling stage, when it is detected that the temperature of any node is lower than the temperature threshold of the node in the current working mode, the working mode of the heat dissipation module is switched to a low gear, and the four-channel proportional solenoid valve 5 is controlled to adjust the flow of each component to be cooled. If the temperature of each node after adjustment is lower than the upper temperature threshold of the node in the current working mode, the working mode remains unchanged; if the temperature of any node after adjustment is higher than the upper temperature threshold of the node in the current working mode, the working mode of the heat dissipation module is switched back to a higher gear.

[0043] The temperature rise phase refers to the temperature of each node at the current moment being greater than the temperature at the previous moment, and the temperature fall phase refers to the temperature of each node at the current moment being less than the temperature at the previous moment.

[0044] More specifically, Figure 2In the present embodiment, when the vehicle is started and the system is powered on, the water pump 2 and the fan 1 start working in the first gear, and the speed is set to Rw1 and Rf1; when the system is powered off or the coolant outlet temperature of the all-in-one controller 6, the motor controller 8, and the motor 9 is lower than the opening value of the first gear, the water pump 2 and the fan 1 are controlled to stop running to reduce system energy consumption;

[0045] The following takes the working mode switching between the first gear and the second gear as an example to introduce the heat dissipation control method of the electric drive and electronic control system of a new energy heavy-duty truck of the present invention: as the vehicle is running or in the vehicle acceleration stage, the temperature of the coolant in the electric drive and electronic control system circuit will continue to rise, and the system is in the warming stage. When it is detected that the coolant outlet temperature of the all-in-one controller 6 reaches 55°C or the coolant outlet temperature of the motor controller 8 reaches 54°C or the coolant outlet temperature of the motor 9 reaches 57°C, the main controller issues a working mode switching instruction. When the system receives the working mode switching instruction, it first executes the delayed shift-up procedure, maintains the current first gear unchanged, adjusts the opening of the four-channel proportional solenoid valve 5, and redistributes the motor controller coolant flow q1, the all-in-one controller coolant flow q2 and the motor coolant flow q3. If the node temperatures of the components to be cooled are all within the temperature range of the current working mode, the current first gear is maintained. Otherwise, the operating gear of the water pump 2 and the fan 1 is increased to the second gear, and the speeds of the water pump 2 and the fan 1 are increased to the set values ​​Rw2 and Rf2;

[0046] When the working mode of the water pump 2 and the fan 1 is switched to the second gear, the cooling performance of the cooling circuit of the electric drive and electronic control system is greatly enhanced, or when the vehicle decelerates, the temperature of the coolant at the nodes of the all-in-one controller 6, the motor controller 8, and the motor 9 will decrease, and the system is in the cooling stage. When the temperature of a node is not within the temperature range of the current gear, the main controller will control the water pump 2 and the fan 1 to lower the current working gear, and control the opening of the four-channel proportional solenoid valve 5 to adjust the flow of each component to be cooled. If the temperature of each node after adjustment is within the temperature range of the current working mode, the current working mode is maintained unchanged. If the temperature of the adjusted node is higher than the upper temperature threshold of the node, the working mode of the water pump 2 and the fan 1 is switched to a higher gear.

[0047] The working mode of the heat dissipation module of the present invention can be divided into more detailed gears according to actual needs. The present invention does not impose too many restrictions on this. The switching process between other gears is the same as the switching process from the first gear to the second gear, and will not be repeated here.

[0048] The working mode of the heat dissipation module further includes: maintaining the gear position, when the temperature of each node is within the temperature range of the current working mode of the node, maintaining the current working mode unchanged.

[0049] In one possible embodiment, while maintaining the gear position, the flow of each component to be cooled can be adjusted by adjusting the opening of the four-channel proportional solenoid valve 5, so that the temperature rise or temperature drop rate of each component remains relatively synchronized, avoiding abnormal heating of a component causing system problems.

[0050] When the heat dissipation demand of the all-in-one controller 6, the motor controller 8 or the motor remains unchanged compared with the previous moment, the working mode of the heat dissipation module remains unchanged, and the opening of the four-channel proportional solenoid valve 5 also remains unchanged; when the heat dissipation demand of the all-in-one controller 6, the motor controller 8 or the motor 9 changes, the main controller adjusts the flow of each heat dissipation component by controlling the opening of the four-channel proportional solenoid valve 5, so that the temperature of each heat dissipation component is maintained within the temperature range of the current gear for as long as possible, reducing the time the heat dissipation module operates in the middle and high gears, and saving resources.

[0051] The method for regulating the flow of each element to be cooled is as follows:

[0052] Obtain the current operating mode (i-th gear) of the water pump 2 and the fan 1, determine the upper and lower limits of the temperature range in the current operating mode, and calculate the difference between the upper limit temperature and the actual temperature of the all-in-one controller 6, the motor controller 8 or the motor 9 in the current operating mode (∆T t , ∆T mc , ∆T m ), which represents the stability margin of each operating temperature. Components with the lowest to highest temperature stability margins are represented by I, J, and K, respectively. A lower temperature stability margin indicates that the temperature at the component outlet is closer to the component's temperature threshold.

[0053] ∆T t =T lim,t,i -T t,o

[0054] ∆T mc =T lim,mc,i -T mc,o

[0055] ∆T m =T lim,m,i -T m,o

[0056] Where, T t,o is the outlet temperature of the all-in-one controller; T mc,o is the outlet temperature of the motor; T m,o is the outlet temperature of the motor controller, T lim,t,i , T lim,mc,i and T lim,m,i is the threshold temperature of the all-in-one controller, motor controller, and motor in operating mode i, in °C;

[0057] Heat exchange rate P between elements J and K at time j J,j and P K,j It can be calculated according to the following formula:

[0058] P J,j =c*q m,J,j *(T J,out,j -T J,in,j )

[0059] P J,k =c*q m,k,j *(T K,out,j -T K,in,j )

[0060] q m,J,j、 q m,k,j represents the mass flow rate of the coolant flowing through components J and K at time j, in kg / s; c is the specific heat capacity of the coolant, T J,out,j 、T J,in,j 、T K,out,j 、T K,in,j They represent the coolant outlet temperature and inlet temperature of components J and K at time j, respectively, in ℃.

[0061] Assuming that the heat exchange requirements of the all-in-one controller 6, motor controller 8 or motor 9 at time j+1 are different from those at time j, the flow rates flowing through J and K at time j+1 can be calculated according to the following formula:

[0062] q m,J,j+1 =Q J,j / (c*(T lim,J,i -η*(T lim,J,i -T J,out,j )-T J,in,j ))

[0063] q m,K,j+1 =Q K,j / (c*(T lim,K,i -η*(T lim,K,i -T K,out,j )-T K,in,j ))

[0064] Where Q is the heat dissipation, η is a dimensionless constant, 0<η<1.

[0065] It should be noted that the closer the value of η is to 0, the flow rate flowing through J and K will drop to the current maximum value that J and K can withstand, which means that more heat will be transferred from I to J and K. It also indicates that it is very likely that J and K will approach the temperature upper limit under the i working mode in the next moment; on the contrary, if the value of η is closer to 1, the amount flowing through J and K will decrease less, the cooling capacity of I will gradually increase, and the cooling capacity of J and K will gradually decrease. The specific value of η is determined according to actual needs and is not restricted here.

[0066] At time j+1, the flow distribution percentage of the four-channel proportional solenoid valve 5 is calculated according to the following formula:

[0067] x 1,j+1 =x 1,j -pΔx1

[0068] X 2,j+1 =x 2,j -pΔx2

[0069] X 3,j+1 =x 3,j -pΔx3

[0070] Δx1=(q m,I,j -q m,I,j+1 ) / q m,K,j

[0071] Δx2=(q m,J,j -q m,J,j+1 ) / q m,K,j

[0072] Δx3=(q m,K,j -q m,K,j+1 ) / q m,K,j

[0073] Among them, p is the proportional gain of the proportional valve, which determines the control rate of the proportional valve. 1,j+1 Indicates the flow distribution percentage of the I element, x 2,j+1 Indicates the flow distribution percentage of the J element, x 3,j+1 Indicates the flow distribution percentage of the K element.

[0074] Example 3

[0075] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the heat dissipation control method for the electric drive and electronic control system of a new energy heavy-duty truck.

[0076] Example 4

[0077] A computer program product includes a computer program / instruction, which, when executed by a processor, implements the steps of the above-mentioned heat dissipation control method for the electric drive and electronic control system of a new energy heavy-duty truck.

[0078] To summarize, under different operating conditions of the vehicle, the heat generation of the motor, motor controller, and all-in-one controller is different and may change at any time, and the corresponding heat dissipation demand changes. According to the difference in output power of different heat dissipation components under different operating conditions, the thermal management system adjusts the speed of the water pump and the fan according to the signal. Different speeds correspond to different gear working modes, thereby enhancing the heat dissipation performance of the system. The flow is adjusted by the four-way flow control valve to improve the cooling performance of components that exceed the gear and reduce the cooling performance of components with surplus gear. The thermal management system identifies whether the coolant outlet temperature of the heat dissipation component has reached the gear upper limit, avoids or delays the gear increase, thereby delaying the increase in power of the water pump and the cooling fan or reducing the gear switching, thereby reducing the energy consumption of the system.

[0079] The motor electronic control cooling system is an important part of the vehicle system. The thermal management system of the present invention can provide better cooling performance for the electric drive electronic control system, while achieving lower fan and water pump speeds, reducing the impact of thermal management system component vibration on the vehicle, and improving NVH performance; adopting a refined gear system working mode, dynamically adjusting the thermal management system working mode according to the heat dissipation requirements during the actual operation of the vehicle, and through the flow distribution strategy, the system can run at a lower gear for as long as possible, reducing the energy consumption and cost of the vehicle and achieving economic maximization.

[0080] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A heat dissipation control method for an electric drive and control system of a new energy heavy truck, characterized in that: include: Real-time acquisition of the node temperature of each component to be cooled and the working mode of the cooling module; When it is detected that the temperature of any node is not within the temperature range of the node in the current working mode, the main controller issues a working mode switching instruction; According to the working mode switching instruction, each module of the thermal management system executes the delayed upshift or early downshift program. If after the delayed upshift or early downshift instruction is executed, the temperature of the node is not within the temperature range of the node in the current working mode, the working mode is switched; otherwise, the current working mode remains unchanged.

2. The heat dissipation control method of the electric drive and control system of a new energy heavy truck according to claim 1 is characterized in that: The temperatures of the element nodes include: motor coolant inlet temperature and outlet temperature; motor controller coolant inlet temperature and outlet temperature; all-in-one controller coolant inlet temperature and outlet temperature.

3. The heat dissipation control method of the electric drive and control system of a new energy heavy truck according to claim 1 is characterized in that: The working modes of the heat dissipation module include at least three modes: a first gear, a second gear and a third gear, wherein the first gear is a low gear and the third gear is a high gear. The higher the gear, the stronger the heat dissipation effect of the heat dissipation module.

4. The heat dissipation control method of the electric drive and control system of a new energy heavy truck according to claim 1 is characterized in that: The execution step of the delayed upshift instruction includes: when the system is in a heating stage, when it is detected that the temperature of any node exceeds the upper temperature threshold of the node in the current working mode, controlling the solenoid valve to adjust the flow of each heat dissipation component; if the adjusted temperature of each node is lower than the upper temperature threshold of the node in the current working mode, maintaining the current working mode unchanged; if the temperature of any node after the adjustment is higher than the upper temperature threshold of the node, switching the working mode of the heat dissipation module to a higher gear; The temperature rising stage means that the temperature of each node at the current moment is greater than the temperature at the previous moment.

5. The heat dissipation control method of the electric drive and control system of a new energy heavy truck according to claim 1 is characterized in that: The execution step of the early downshift instruction includes: when the system is in a cooling stage, when it is detected that the temperature of any node is lower than the temperature threshold of the node in the current working mode, switching the working mode of the heat dissipation module to a low gear, controlling the solenoid valve to adjust the flow of each heat dissipation component, if the temperature of each node after adjustment is lower than the upper temperature threshold of the node in the current working mode, keeping the working mode unchanged; if the temperature of any node after adjustment is higher than the upper temperature threshold of the node in the current working mode, switching the working mode of the heat dissipation module back to a higher gear; The cooling stage refers to the temperature of each node at a current moment being lower than the temperature at a previous moment.

6. The heat dissipation control method of the electric drive and control system of a new energy heavy truck according to claim 1 is characterized in that: The working mode of the heat dissipation module further includes: maintaining the gear position, when the temperature of each node is within the temperature range of the node in the current working mode, maintaining the current working mode unchanged.

7. A thermal management system for an electric drive and control system of a new energy heavy truck, characterized in that: The heat dissipation control method of the electric drive and control system of a new energy heavy-duty truck according to any one of claims 1 to 6 comprises a solenoid valve, a heat dissipation module and a master controller.

8. The thermal management system of the electric drive and control system of a new energy heavy truck according to claim 7 is characterized in that: The solenoid valve is a four-channel proportional solenoid valve used to adjust the flow through the motor controller, motor, and all-in-one controller.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the heat dissipation control method of the electric drive and control system of a new energy heavy-duty truck according to any one of claims 1 to 6 are implemented.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instruction is executed by a processor, the steps of the heat dissipation control method of the electric drive and control system of a new energy heavy-duty truck described in any one of claims 1 to 6 are implemented.

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