CN110281739A - A kind of heat management system of the phase change cold-storage plate heat conduction reinforced based on embedded heat pipe - Google Patents

Abstract

The invention discloses a thermal management system based on a phase-change cold storage plate with enhanced heat transfer of embedded heat pipes, which is applied to refrigerated vehicles and includes a rapid cooling subsystem for cooling gravity heat pipes in the cold storage plate of refrigerated vehicles. Supplement; the rapid cooling subsystem includes a hollow cold storage tank and a cold storage refrigeration unit; the cold charging tank is pre-filled with a cold working medium; there is a gravity heat pipe embedded frame in the cold charged tank; there are multiple embedded Groove; each embedding groove is connected with the cold charging groove; each embedding groove is embedded with a gravity heat pipe; the cold charging groove has a heat exchange tube; the refrigerant outlet of the cold storage refrigeration unit is connected with the refrigerant inlet of the evaporator; The refrigerant outlet of the device is connected to the upper end of the heat exchange tube; the lower end of the heat exchange tube is connected to the refrigerant inlet of the refrigeration unit of the cold storage after passing through the cold charging tank. The invention can quickly and reliably supplement the cold energy in the refrigerated box in the refrigerated vehicle, and ensure that the refrigerated box has a good refrigerated temperature.

Description

A thermal management system based on a phase-change cold storage plate with enhanced heat transfer of embedded heat pipes

technical field

The invention relates to the technical field of refrigeration, in particular to a heat management system based on a phase-change cold storage plate with embedded heat pipe heat transfer enhancement.

Background technique

At present, refrigerated transportation is an important link in the cold chain logistics system. The transportation of frozen or fresh goods through refrigerated trucks equipped with refrigeration systems plays an irreplaceable role in the transportation and quality preservation of cold chain commodities.

In recent years, with the rapid development of my country's cold chain logistics, the demand for refrigerated transportation is also growing rapidly, but my country's refrigerated transportation still has problems such as low transportation concentration, low transportation efficiency and high cost. At present, the comprehensive circulation rate of the cold chain in my country is only 19%, and there are still a large number of cold chain commodities that directly enter the market and the end of consumption without passing through the refrigerated transportation link, especially the distribution process of the end link of the cold chain, which is very weak. The reason is that This is related to the rapid development of my country's refrigerated transportation technology and logistics industry and the mismatch between changing needs. Therefore, the research and development of refrigerated transportation equipment that is more suitable for my country's basic national conditions such as road traffic and cargo transportation is of great significance to the development of my country's cold chain logistics.

With the continuous improvement of environmental protection requirements, the vapor compression refrigeration system used in refrigerated transportation will face more and more pressure to replace it, and the technology of combining cold storage and renewable energy does not require refrigerants and has no environmental protection problems. An important development direction of refrigerated transportation technology. However, the logistics industry is facing the problem of multi-batch and small-batch logistics, and the complete freezing time of traditional cold storage plates is very long. In order to realize the frequent use of cold storage plates, it is necessary to prepare a large number of completely frozen cold storage plates in advance. However, It is still difficult to solve the problems encountered in the process of cold chain logistics such as fast consumption of cold energy, large quantities of cold storage plates to be replaced at the same time, and difficulty in replacing large cold storage plates.

Contents of the invention

The object of the present invention is to provide a thermal management system based on a phase-change cold storage plate with enhanced heat transfer of embedded heat pipes, aiming at the technical defects in the prior art.

To this end, the present invention provides a thermal management system based on a phase-change cold storage plate with enhanced heat transfer of embedded heat pipes, which is applied to a refrigerated vehicle, including a fast charging and cooling subsystem, which is used for cooling the refrigerated vehicle The gravity heat pipe in the cold storage plate supplements the cold energy;

The rapid charging and cooling subsystem includes a hollow charging and cooling tank and a cold storage refrigeration unit;

The loaded cold working medium is pre-filled in the cold tank;

There are horizontally distributed gravity heat pipe embedded racks in the cold charging tank;

The gravity heat pipe embedding frame has a plurality of embedding grooves with openings upward and open on the front and rear sides;

Each embedding groove communicates with the charging and cooling groove;

Vertically distributed gravity heat pipes are embedded in each embedding groove;

There are heat exchange tubes distributed up and down in the cold charging tank;

The refrigerant outlet of the refrigeration unit of the cold storage is connected with the refrigerant inlet of the evaporator;

The refrigerant outlet of the evaporator is connected to the upper end of the heat exchange tube;

The lower end of the heat exchange tube is sealed and penetrated through the cold charging tank, and connected with the refrigerant inlet of the refrigeration unit of the cold storage through a hollow connecting pipe.

Wherein, a mixer is also installed in the charging cold tank;

The stirring wheel of the mixer is located in the cooling working medium in the cooling tank.

Among them, the refrigeration subsystem is also included;

The refrigeration subsystem is specifically the cold storage plate of the refrigerated vehicle, which specifically includes a hollow box;

The inner chamber of the box is a phase-change material immersion area, and the phase-change material immersion area is pre-filled with phase-change cold storage material;

There are multiple gravity heat pipes vertically penetrating inside the box;

The lower part of the gravity heat pipe protrudes from the bottom surface of the box body.

Wherein, the shell of the box body is a sealed, hollow and heat-insulating shell.

Wherein, a plurality of gravity heat pipes protrude from the outer wall of the part of the bottom surface of the box, and are closely attached to a plurality of horizontally distributed fins.

Wherein, the bottom of the box body is also connected with a hollow air duct bracket;

The lower part of the gravity heat pipe protruding from the bottom of the box and the fins are located inside the air duct bracket;

The left and right ends of the air duct bracket are respectively provided with an air outlet and an air inlet;

A blower fan is installed on the air inlet.

Among them, it also includes intelligent temperature control and air supply volume adjustment subsystem;

The intelligent temperature control and air supply adjustment subsystem includes a central processing unit, a solenoid valve, a weather information acquisition module, a mobile terminal, a network communication module and a temperature sensor, among which:

The meteorological information acquisition module is connected with the mobile terminal;

The mobile terminal is connected with the network communication module;

Network communication module, two-way connection with the central processing unit;

The temperature sensor is connected with the central processing unit;

The central processing unit is connected with the solenoid valve;

The central processing unit and the solenoid valve are respectively connected to the fan;

Among them, the weather information acquisition module is used to acquire the real-time weather information of the passing places on the driving route of the refrigerated truck, and then send it to the mobile terminal;

The mobile terminal is used to send the received real-time weather information of the places passing by on the driving route of the refrigerated truck to the central processor through the network communication module;

As a temperature monitoring module, multiple temperature sensors are installed on both sides of the interior and exterior of the refrigerated truck to monitor the ambient temperature inside and outside the compartment of the refrigerated truck in real time, and then send it to the central processing unit;

The central processing unit is used to control the working status of the fan of the cold storage plate of the refrigerated car according to the received real-time weather information, the ambient temperature information inside and outside the car, so as to adjust and control the air velocity at the gravity heat pipe outside the box, Correspondingly adjust the temperature in the compartment of the refrigerated vehicle.

Among them, four refrigerated truck cold storage panels are placed equidistantly on the left side of the refrigerated truck compartment, three refrigerated truck cold storage panels are placed equidistantly on the right side except for the door, and a partition board is installed in the middle part of the compartment. A refrigerated car cold storage plate;

The compartment door is arranged on the right side and the rear of the compartment of the refrigerated vehicle.

It can be seen from the technical solution provided by the present invention above that, compared with the prior art, the present invention provides a thermal management system based on a phase-change cold storage plate with enhanced heat transfer of embedded heat pipes, which can control The cold energy can be quickly and reliably replenished to ensure a good refrigeration temperature in the refrigerator, and it is energy-saving and environmentally friendly, which has great practical significance in production.

Description of drawings

Fig. 1 is a kind of heat management system based on the embedded heat pipe heat transfer enhanced phase-change cold storage plate provided by the present invention, which is used to supplement the cold energy of the cold storage plate (specifically the gravity heat pipe 10) of the refrigerated vehicle. Structural diagram of the system;

Fig. 2 is a structural schematic diagram of an embodiment of a cold storage plate for a refrigerated vehicle (that is, as a refrigeration system) in a thermal management system based on a phase-change cold storage plate with embedded heat pipe heat transfer enhancement provided by the present invention;

Fig. 3 is a schematic diagram of an embodiment of an intelligent temperature control and air supply adjustment system in a thermal management system based on a phase-change cold storage plate with embedded heat pipe heat transfer enhancement provided by the present invention;

Fig. 4 is a schematic diagram of the placement position of the cold storage plate in the compartment of a refrigerated truck in a thermal management system based on a phase-change cold storage plate with heat transfer enhancement of embedded heat pipes provided by the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to Figures 1 to 4, the present invention provides a thermal management system based on a phase-change cold storage plate with enhanced heat transfer of embedded heat pipes, which is applied to refrigerated vehicles, including a fast charging and cooling subsystem, which is used for To supplement the cold energy of the cold storage plate of the refrigerated vehicle (specifically, the gravity heat pipe 10 therein);

The fast charging and cooling subsystem includes a hollow charging and cooling tank 4 and a cold storage refrigerating unit 5;

The cold working medium (ethylene glycol aqueous solution) 3 is pre-filled in the cold tank 4;

There is a horizontally distributed gravity heat pipe embedded frame 100 in the cold charging tank 4;

The gravity heat pipe embedding frame 100 has a plurality of embedding grooves 101 with openings upwards and open on both sides;

Each embedding tank 101 communicates with the cold charging tank 4, which is filled with a cold working medium (such as ethylene glycol aqueous solution) 3;

Each embedding groove 101 is embedded with a vertically distributed gravity heat pipe 10 (when it is necessary to supplement the cold energy of the gravity heat pipe 1 in the cold storage plate of the refrigerated vehicle, it is inserted into the embedding groove 101 according to the cold energy replenishment needs of the user);

There are heat exchange tubes 60 distributed up and down in the cold charging tank 4;

The refrigerant outlet of the refrigeration unit 5 of the cold storage is connected with the refrigerant inlet of the evaporator 6;

The refrigerant outlet of the evaporator 6 is connected to the upper end of the heat exchange tube 60;

The lower end of the heat exchange tube 60 is sealed and penetrated through the cold charging tank 4 , and is connected to the refrigerant inlet of the refrigeration unit 5 of the cold storage through a hollow connecting pipe.

It should be noted that the gravity heat pipe 10 is an important part of the cold storage plate, and is filled with working fluid (ammonia or freon). In order to supplement cold energy to the gravity heat pipe 10 in the cold storage plate of the refrigerated vehicle, the gravity heat pipe 10 in the cold storage plate is placed in the embedded groove 101 in the cold storage tank 4, and then the gravity heat pipe 10 in the cold storage plate can realize cold energy. After the replenishment is completed, it can be reused, that is, put it into the cold storage plate of the refrigerated vehicle (such as shown in Figure 2), and reuse it to play the cooling function of the cold storage plate of the refrigerated vehicle.

For the present invention, the evaporator 6 is connected to the cooling tank 4 through the heat exchange tube 60, and is used to provide cold energy to the cooling medium 3, so that the temperature of the cooling medium 3 is lowered to reach the target temperature, and the rapid cooling process is completed.

In the present invention, in specific implementation, the cold storage refrigeration unit 5 can be a common refrigeration system, including the main functional components of the refrigeration system, such as a compressor, a condenser and a throttle valve. In addition, the evaporator 6 is also a cold storage refrigeration unit. The important functional parts work with other parts;

Wherein, the refrigerant outlet of the compressor is connected with the refrigerant inlet of the condenser, the refrigerant outlet of the condenser is connected with the refrigerant inlet of the evaporator 6 through a throttle valve, and the refrigerant outlet of the evaporator 6 is connected through a heat exchange tube 60 communicates with the refrigerant inlet of the compressor.

Wherein, the power source of the compressor may be a generator in the refrigerated vehicle (that is, an internal power source) or any external power source that can provide a driving voltage.

It should be noted that the compressor is used to compress the low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant. After being condensed by the condenser, it enters the evaporator 6 for evaporation, thereby exchanging heat between the evaporator 6 Tube 60 supplies cold energy.

In the present invention, in terms of specific implementation, the evaporator 6 can be a fin evaporator with a model number of 1P-200P produced by Baiduo Cooling and Heating Air Conditioning Equipment Co., Ltd., of course, it can also be a fin produced by other manufacturers that meets the requirements of this patent. Evaporator;

In the present invention, in terms of specific implementation, the compressor in the refrigeration unit of the cold storage can adopt the hermetic compressor of the model 2V32S225AUA produced by Dongguan Linchang Refrigeration Electromechanical Equipment Co., Ltd., of course, it can also be produced by other manufacturers and meet the requirements of this patent. the required compressor;

In the present invention, in terms of specific implementation, the condenser in the refrigeration unit of the cold storage can adopt the condenser of model 020 produced by Baiduo Refrigeration and Air Conditioning Equipment Co., Ltd., of course, it can also be a condenser produced by other manufacturers that meets the requirements of this patent ;

In the present invention, in terms of specific implementation, the throttle valve in the refrigerating unit of the cold storage can be the throttle valve of the model SHE produced by Shanghai Xinchang Heating Equipment Co., Ltd., of course, it can also be a throttle valve produced by other manufacturers that meets the requirements of this patent. flow valve.

In the present invention, in specific implementation, a mixer 2 is also installed in the cooling tank 4;

The stirring wheel that the stirrer 2 has is located in the cold working medium (such as ethylene glycol aqueous solution) 3 in the cold tank 4 .

It should be noted that the agitator 2 includes a rotatable agitating wheel and a motor, and the motor drives the agitating wheel to rotate to force the cooling medium to flow.

In the present invention, in terms of specific implementation, the present invention also includes a refrigeration subsystem;

The refrigeration subsystem is specifically a cold storage plate 1 of a refrigerated vehicle, specifically including a hollow box 7;

The inner chamber of the casing 7 is a phase-change material immersion zone 9, which is pre-filled with a phase-change cold storage material (such as potassium fluoride tetrahydrate) in the phase-change material immersion zone 9;

A plurality of gravity heat pipes 10 are arranged vertically through the inside of the box body 7;

The lower part of the gravity heat pipe 10 protrudes from the bottom surface of the box body 7 .

In terms of specific implementation, the outer shell of the box body 7 is a sealed, hollow and heat-insulating shell.

In terms of specific implementation, the outer wall of the part where the plurality of gravity heat pipes 10 protrude from the bottom surface of the box body 7 closely fits (for example, engages) with the plurality of horizontally distributed fins 11 . Therefore, the heat transfer area between the part of the gravity heat pipe 10 protruding from the bottom surface of the box body 7 and the outside air can be increased.

Specifically, a hollow air duct support 13 is connected to the bottom of the box body 7;

The part of the lower part of the gravity heat pipe 10 protruding from the bottom surface of the box body 7 and the fins 11 are located inside the air duct support 13 .

In terms of specific implementation, the left and right ends of the air duct support 13 are respectively provided with an air outlet 12 and an air inlet 14;

A fan 15 is installed on the air inlet 14, and the fan 15 is used to blow the outside air into the air duct support 13 through the air inlet buckle 14.

Therefore, for the present invention, the air driven by the fan 15 can only pass through the air duct support 13, and pass through the fins 11 and the outer surface of the gravity heat pipe 10 for heat exchange, and then be discharged from the air outlet 12.

In terms of specific implementation, the fan 15 is a variable frequency fan, which can realize the multi-speed adjustment of the fan speed, thereby realizing the adjustment of the air speed.

It should be noted that, for the present invention, the lower part of the gravity heat pipe 10 protruding from the bottom surface of the box body 7 and the fins 11 can exchange heat with the high temperature outside air in summer through the air driven by the fan 15 . At this time, the working fluid (ammonia or freon) in the gravity heat pipe 10 outside the box body 7 (that is, the part of the gravity heat pipe 10 protruding from the bottom surface of the box body 7) is cooled by the air after heat exchange, and the air outlet 12 It is discharged outward to realize the cooling effect. The working medium (ammonia or freon) in the gravity heat pipe 10 outside the box body 7 evaporates into gas and enters the part of the gravity heat pipe 10 inside the box body 7 (that is, the gravity heat pipe located inside the box body 7 Heat pipe);

Simultaneously, since the phase-change cold storage material (for example, potassium fluoride tetrahydrate) is pre-injected in the phase-change material immersion area 9, the phase-change cold storage material is filled in the inside of the box body 7, and one end of the gravity heat pipe 10 is connected with the inside of the box body 7. , the other end is connected to the fin 11, so that the working medium steam inside the heat pipe 10 in the box body 7 conducts heat transfer and condensation with the inner wall surface of the heat pipe 10, and at the same time, the outer wall of the heat pipe in the box body 7 and the immersion area of the phase change cold storage material The phase-change cold storage material in 9 conducts heat transfer, which makes the phase-change cold storage material melt and completes the whole cooling process.

In the present invention, in terms of specific implementation, the present invention also includes an intelligent temperature control and air supply volume adjustment subsystem;

The intelligent temperature control and air supply adjustment subsystem includes a central processing unit 16, a solenoid valve 17, a weather information acquisition module 18, a mobile terminal 19, a network communication module 20 and a temperature sensor 21, wherein:

The meteorological information acquisition module 18 is connected with the mobile terminal 19;

Mobile terminal 19 is connected with network communication module 20;

The network communication module 20 is bidirectionally connected with the central processing unit 16;

Temperature sensor 21 is connected with central processing unit 16;

The central processing unit 16 is connected with the solenoid valve 17;

The central processing unit 16 and the solenoid valve 17 are connected to the blower fan 15 respectively;

Wherein, among the above-mentioned modules, the weather information acquisition module 18 is used to acquire the real-time weather information of the passing places on the driving route of the refrigerated vehicle, and then send it to the mobile terminal 19;

Mobile terminal (such as mobile phone) 19, is used for the real-time meteorological information of place passing through on the refrigerated truck travel route that receives, sends to central processing unit 16 through network communication module 20 (such as 4G communication module);

A plurality of temperature sensors 21 as a temperature monitoring module are installed on both sides inside and outside the compartment of the refrigerated vehicle, for real-time monitoring of the ambient temperature in the compartment of the refrigerated vehicle and outside the compartment, and then sent to the central processing unit 16;

The central processing unit 16 is used to intelligently control the working state of the blower fan 15 that the cold storage plate of the refrigerated vehicle has according to the received real-time weather information, the ambient temperature information in the compartment and outside the compartment (such as controlling the speed of the blower fan 15). , by pre-storing a plurality of different real-time weather information, a plurality of different environmental temperature information inside and outside the compartment, and the corresponding relationship between a plurality of different fan speeds, such as a one-to-one correspondence), so as to adjust and control the outside of the box The air velocity at the gravity heat pipe is adjusted correspondingly to the cooling capacity of the cold storage plate, realizing the adjustment of the cooling capacity of the cold storage plate, and intelligently adjusting the temperature in the compartment of the refrigerated vehicle. Finally, an intelligent temperature control and air supply volume adjustment system is formed.

In the present invention, in specific implementation, the placement position of the cold storage panels 1 of the refrigerated vehicle can be placed equidistantly on the left side of the compartment 30 of the refrigerated vehicle with four cold storage panels 1 for the refrigerated vehicle, and three pieces of the cold storage panels 1 on the right side except the door part are equidistantly placed. A refrigerated car cold storage plate, a partition plate is installed in the middle part of the compartment 30, a refrigerated car cold storage plate 1 is placed on this partition plate, and the compartment door is arranged on the right side and the back of the compartment 30 of the refrigerated car. In this way, it can be avoided that the cold energy cannot be supplemented in time or the cooling capacity can be reduced, resulting in uneven temperature in the refrigerated compartment. It can also avoid the uneven temperature field in the compartment caused by the single air supply port of the fan in the traditional refrigeration equipment. This design method improves the uniformity of the temperature field in the box and ensures the quality of the transported goods.

It should be noted that, for the present invention, the use of phase-change cold storage plates based on embedded heat pipe heat transfer enhancement is aimed at the problems encountered in the existing logistics industry, and comprehensively considers various factors to achieve energy saving, fast and accurate cooling. It is characterized by supplementing and optimizing the uniformity of the temperature field in the box, and a patented scheme is proposed.

Compared with the prior art, the present invention provides a thermal management system based on a phase-change cold storage plate with enhanced heat transfer of embedded heat pipes, which has the following beneficial effects:

1. The present invention conducts heat through the coupling of embedded heat pipe elements (ie, gravity heat pipes) and phase change materials. At the same time, fans and air ducts are set at the heat pipes outside the device, so as to realize cooling during refrigerated transportation by adjusting the air supply volume on the wind side. It can be replenished quickly and accurately.

_2. The cold storage plate of the present invention adopts a phase change cold storage working medium (CaCl solution), which has a higher thermal conductivity, can produce a larger latent heat value in the phase change process, and has a small volume change during the phase change, and the material price is relatively low. Inexpensive, and the material is non-toxic, non-corrosive, and non-polluting. The cold storage plate is small in size, light in weight, easy to install and disassemble, and the CaCl ₂ solution has a suitable phase transition temperature, which can take into account the refrigerated transportation of foods with different storage temperatures.

3. The present invention charges the phase-change cold storage plate at night in a cold storage equipped with a fast cooling device, which greatly shortens the cooling time, and combines with renewable energy and the peak-valley electricity price system to reduce the cost of refrigerated transportation. In response to the policy of energy saving and emission reduction, it solves the problems of fast energy consumption and large quantities of cold storage plates to be replaced at the same time encountered in the process of cold chain logistics.

4. The refrigeration system of the present invention adopts delta-wing corrugated fins to strengthen the forced convection heat exchange between the cold storage plate and the air in the compartment. the surface heat transfer coefficient.

5. The refrigeration system of the present invention is applied to refrigerated vehicles. The refrigerated vehicle can perform intelligent temperature control based on real-time weather information. According to the received real-time weather information, the ambient temperature inside and outside the vehicle compartment, and the speed of the vehicle, the refrigerated vehicle can be intelligently controlled through a neural network algorithm. The working state of the cold storage plate fan of the car can intelligently adjust the temperature in the compartment of the refrigerated car.

In summary, compared with the prior art, the present invention provides a thermal management system based on a phase-change cold storage plate with embedded heat pipe heat transfer enhancement, which can quickly and reliably control the cold energy in the refrigerated box in the refrigerated vehicle. It is of great significance for production practice to ensure a good refrigeration temperature in the refrigerator and to save energy and protect the environment.

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present invention. It should be regarded as the protection scope of the present invention.

Claims (8)

1. A thermal management system based on a phase-change cold storage plate with embedded heat pipe heat transfer enhancement, which is applied in a refrigerated vehicle, and is characterized in that it includes a fast charging and cooling subsystem, which is used to store cold in the refrigerating vehicle The gravity heat pipe (10) in the plate carries out cold energy supplement; The fast charging and cooling subsystem includes a hollow charging and cooling tank (4) and a cold storage refrigerating unit (5); The cold working medium (3) is filled in advance in the cold charging tank (4); There is a gravity heat pipe embedded frame (100) distributed laterally in the cold filling tank (4); The gravity heat pipe embedding frame (100) has a plurality of embedding grooves (101) with openings upward and open on the front and rear sides; Each embedding groove (101) communicates with the cold charging groove (4); Vertically distributed gravity heat pipes (10) are embedded in each embedding groove (101); There are heat exchange tubes (60) distributed up and down in the cooling tank (4); The refrigerant outlet of the cold storage refrigeration unit (5) is connected with the refrigerant inlet of the evaporator (6); The refrigerant outlet of the evaporator (6) is connected to the upper end of the heat exchange tube (60); The lower end of the heat exchange tube (60) is sealed and penetrated through the cold charging tank (4), and connected to the refrigerant inlet of the cold storage refrigerating unit (5) through a hollow connecting pipe. 2. The thermal management system according to claim 1, characterized in that, a stirrer (2) is also installed in the cold filling tank (4); The stirring wheel that the mixer (2) has is located in the cold working medium (3) in the cold tank (4). 3. The thermal management system according to claim 1 or 2, further comprising a refrigeration subsystem; The refrigeration subsystem is specifically a cold storage plate (1) of a refrigerated vehicle, which specifically includes a hollow box (7); The inner chamber of the box (7) is a phase change material immersion area (9), and the phase change material immersion area (9) is pre-filled with phase change cold storage material; A plurality of gravity heat pipes (10) are vertically penetrated inside the box body (7); The lower part of the gravity heat pipe (10) protrudes from the bottom surface of the box body (7). 4. The heat management system according to claim 3, characterized in that, the outer shell of the box (7) is a sealed, hollow and heat-insulating shell. 5. The heat management system according to claim 3, characterized in that, the outer wall of the part protruding from the bottom surface of the box body (7) of a plurality of gravity heat pipes (10) is closely attached to a plurality of horizontally distributed fins (11) combine. 6. The heat management system according to claim 5, characterized in that, a hollow air duct support (13) is connected to the bottom of the box (7); The part of the lower part of the gravity heat pipe (10) protruding from the bottom surface of the box body (7) and the fins (11) are located inside the air duct support (13); The left and right ends of the air duct support (13) are respectively provided with an air outlet (12) and an air inlet (14); A blower fan (15) is installed on the air inlet (14). 7. The thermal management system according to any one of claims 1 to 6, further comprising an intelligent temperature control and air supply adjustment subsystem; The intelligent temperature control and air supply adjustment subsystem includes a central processing unit (16), a solenoid valve (17), a weather information acquisition module (18), a mobile terminal (19), a network communication module (20) and a temperature sensor (21), in: Weather information acquisition module (18), is connected with mobile terminal (19); The mobile terminal (19) is connected with the network communication module (20); The network communication module (20) is bidirectionally connected with the central processing unit (16); Temperature sensor (21) is connected with central processing unit (16); Central processing unit (16) links to each other with electromagnetic valve (17); The central processing unit (16) is connected to the fan (15) with the solenoid valve (17) respectively; Wherein, the weather information acquisition module (18) is used to acquire the real-time weather information of the places passing by on the driving route of the refrigerated vehicle, and then send it to the mobile terminal (19); The mobile terminal (19) is used to send the received real-time weather information of the passing places on the driving route of the refrigerated truck to the central processing unit (16) through the network communication module (20); A plurality of temperature sensors (21) as a temperature monitoring module are installed on both sides inside and outside the compartment of the refrigerated truck for real-time monitoring of the ambient temperature in the compartment of the refrigerated vehicle and outside the compartment, and then sent to the central processing unit (16); The central processing unit (16) is used to control the working state of the fan (15) of the cold storage plate of the refrigerated vehicle according to the received real-time weather information, the ambient temperature information in the compartment and outside the compartment, so as to adjust the gravity outside the control box The air velocity at the heat pipe corresponds to the temperature in the compartment of the refrigerated truck. 8. The thermal management system according to any one of claims 1 to 6, characterized in that four refrigerated truck cold storage plates are equidistantly placed on the left side of the compartment (30) of the refrigerated vehicle, and the right side is equidistant except for the door part Three refrigerated car cold storage plates are placed, and a partition plate is installed in the middle part of the compartment (30), on which a refrigerated car cold storage plate is placed; The compartment door is arranged on the right side and the back of the compartment (30) of the refrigerated vehicle.