Heat management system based on strengthened and toughened composite phase change heat storage material

Abstract

The invention discloses a heat management system based on a toughening composite phase change heat storage material, and relates to the technical field of heat management systems, the heat management system comprises a main body, a conversion module, a monitoring module, a processor and a power supply, the conversion module is connected with the power supply through a signal line, the conversion module is connected with the processor through a signal line, and the monitoring module is connected with the processor through a signal line. The monitoring module is connected with a power supply through a signal line, the processor is connected with the power supply through a signal line, the processor is installed on the front side of the inner wall of the main body, the power supply is installed on the front side of the inner wall of the main body, the conversion module is installed on the front side of the inner wall of the main body, and the monitoring module is installed on the front side of the inner wall of the main body. By installing the conversion module, the function of uninterrupted working of the thermal management system is achieved, the problems that working is stopped after the interior of the thermal management system breaks down, heat dissipation is not timely, and potential safety hazards occur are solved, the working efficiency of the thermal management system is improved, and the possibility that an overheating condition occurs is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management systems, and in particular to a thermal management system based on a reinforced composite phase change heat storage material. Background Art

[0002] Phase change materials can absorb or release a large amount of latent heat during the phase change process. This characteristic makes them an efficient energy storage material. With the advancement of science and technology, the research on phase change materials has gradually deepened, from single materials to composite materials, aiming to solve the leakage problem, improve thermal conductivity and expand the application field. High-end composite phase change energy storage materials, such as "molten eutectic mixed fatty alcohol" made of animal and plant fats, have shown broad application prospects in the fields of cold storage and heat storage due to their excellent performance. The research on these materials not only promotes the development of energy storage technology, but also provides strong support for energy conservation and emission reduction and improving energy utilization efficiency. With the development of automobiles, electronic equipment and other fields, each component needs to be maintained within a specific temperature range for efficient operation to ensure performance, extend life and improve safety. The thermal management system achieves precise temperature control through the process of heat generation, transfer, conversion and dissipation. It uses air cooling, liquid cooling, heat pumps and other methods, combined with advanced technologies such as phase change materials, to ensure stable operation of equipment under complex working conditions. Existing thermal management systems that use phase change materials have some defects. The thermal conductivity of phase change materials is low, which affects the working efficiency of the thermal management system. The contact thermal resistance of the heat transfer path is large, which reduces the working performance of the thermal management system. The selection and dosage of phase change materials cannot be unified, and it is difficult to meet the precise temperature control requirements, which affects the safety during use and the service life. At the same time, the physical properties of the phase change materials themselves, such as large volume, high thermal conductivity but poor thermal insulation and easy shedding, cause certain problems in the application of phase change materials in thermal management systems. When internal faults occur, it is often impossible to locate the problem in the first time and the problem cannot be solved in time.

[0003] 1. Patent document CN108649298B discloses an electric vehicle battery thermal management system based on phase change materials. The above patent improves the temperature consistency of the battery pack and saves energy. It uses the latent heat of the phase change material and the insulation capacity of the temperature control box to maintain the temperature of the battery pack for a certain period of time, which is beneficial to the starting and charging of the car at low temperatures. However, the above patent cannot realize the function of uninterrupted operation of the thermal management system.

[0004] 2. Patent document CN106602171B discloses a phase change material / air coupled hierarchical battery thermal management system. The above patent realizes the organic coupling of the two thermal management technologies of phase change material cooling and air cooling, efficiently removes the heat generated by the battery, and utilizes the hierarchical arrangement of phase change materials and fins to effectively reduce the temperature difference within / between single cells and increase the temperature uniformity of single cells / battery packs. It has obvious temperature control and temperature equalization effects, compact structure, and easy installation and maintenance. However, the above patent cannot realize the function of real-time monitoring of the internal thermal management system.

[0005] 3. Patent document CN108682921B discloses an electric vehicle battery thermal management system based on phase change material heat equalization and storage technology. The above patent improves the temperature consistency and cooling and heating speed of battery cells and battery packs, and has high-temperature cooling and low-temperature heating functions, which reduces energy consumption and damage to the capacity and life of the battery pack. It has a simple structure and low cost, but the above patent cannot realize the function of controlling the thermal management system.

[0006] 4. Patent document CN109888432B discloses a lithium-ion battery thermal management system including spray cooling and phase change material heat storage. The above patent can obtain effective heat to warm up the battery during cold start under low temperature conditions, and can also quickly and efficiently dissipate heat and reduce its surface temperature gradient when the lithium-ion battery is overheated. However, the above patent cannot achieve the excellent temperature control function of the thermal management system.

[0007] In summary, the above patents cannot realize the function of uninterrupted operation of the thermal management system, cannot realize the function of real-time monitoring of the thermal management system, cannot realize the function of controlling the thermal management system, and cannot realize the function of excellent temperature control of the thermal management system, which leads to the problems of the thermal management system stopping working after a fault occurs inside, safety hazards caused by untimely heat dissipation, lack of understanding of the internal situation of the thermal management system, untimely discovery of faults after they occur, continued operation of the thermal management system after a fault occurs, insufficient temperature control capability of the thermal management system, and performance reduction caused by internal temperature imbalance; To this end, the present application proposes a thermal management system based on a reinforced composite phase change heat storage material, which can realize the function of uninterrupted operation of the thermal management system, the function of real-time monitoring of the internal thermal management system, the function of controlling the thermal management system, and the function of excellent temperature control of the thermal management system. Summary of the invention

[0008] The purpose of the present invention is to provide a thermal management system based on a toughened composite phase change heat storage material to solve the technical problems proposed in the above background technology that the thermal management system can realize the function of uninterrupted operation, but cannot realize the function of real-time monitoring of the internal thermal management system, cannot realize the function of controlling the thermal management system, and cannot realize the function of excellent temperature control of the thermal management system, which leads to the thermal management system stopping working after a fault occurs inside, safety hazards caused by untimely heat dissipation, lack of understanding of the internal situation of the thermal management system, untimely discovery of faults, continued operation of the thermal management system after a fault occurs, insufficient temperature control capability of the thermal management system, and internal temperature imbalance that reduces performance.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solutions: A thermal management system based on a toughened composite phase change heat storage material, comprising a main body, a conversion module, a monitoring module, a processor and a power supply, wherein the conversion module is connected to the power supply via a signal line, the conversion module is connected to the processor via a signal line, the monitoring module is connected to the power supply via a signal line, and the processor is connected to the power supply via a signal line; A processor is installed on the front side of the inner wall of the main body, a power supply is installed on the front side of the inner wall of the main body, a conversion module is installed on the front side of the inner wall of the main body, and a monitoring module is installed on the front side of the inner wall of the main body; The conversion module includes: a backup circuit, an adapter and a protection circuit, and the adapter is connected to the processor through a signal line; An adapter is installed on the front side of the inner wall of the main body, a backup circuit is installed on the front side of the inner wall of the main body, and a protection circuit is installed on the front side of the inner wall of the main body; The adapter comprises: a switch, a double-row composite contact and a double interlocking unit; A switch is installed on the front side of the inner wall of the main body, a double-row composite contact is installed on the front side of the inner wall of the main body, and a double interlocking unit is installed on the front side of the inner wall of the main body.

[0010] Preferably, the monitoring module includes: a temperature sensor, a current sensor, a voltage transformer and an alarm, wherein the temperature sensor is connected to the processor via a signal line, the current sensor is connected to the processor via a signal line, the voltage transformer is connected to the processor via a signal line, and the alarm is connected to the processor via a signal line; A temperature sensor is installed on the front side of the inner wall of the main body, a current sensor is installed on the front side of the inner wall of the main body, a voltage transformer is installed on the front side of the inner wall of the main body, and an alarm is installed on the front side of the inner wall of the main body; The temperature sensor is internally provided with a receiving unit, a detection unit and a conversion unit. When the temperature of an external object is higher than absolute zero, the receiving unit radiates infrared rays with a wavelength of 0.75-100µm. The detection unit converts the received infrared rays into electrical signals. After further processing of the electrical signals, the conversion unit transmits the information to the processor. The current sensor is provided with an iron core and a winding inside. Based on Faraday's law of electromagnetic induction, when the measured current passes through the primary winding of the transformer, a magnetic field proportional to the current is generated. This magnetic field passes through the iron core and induces the secondary winding, thereby generating an induced electromotive force in the secondary winding. After the induced electromotive force is amplified and adjusted, a voltage signal proportional to the measured current is output, and the signal is transmitted to the processor; The voltage transformer is provided with a primary winding, a secondary winding and an iron core. Based on the principle of electromagnetic induction, when a voltage is applied to the primary winding, an alternating magnetic flux is generated in the iron core, and an induced electromotive force proportional to the primary voltage is generated on the secondary winding, converting the high voltage into a low voltage signal suitable for measurement, and transmitting the information to the processor after processing.

[0011] Preferably, a partition module is installed on the upper side of the inner wall of the main body, and the partition module includes: a sealing component, a first heat sink and a circuit breaker component, the sealing component is connected to the processor through a signal line, the first heat sink is connected to the processor through a signal line, and the circuit breaker component is connected to the processor through a signal line; A sealing component is installed on the upper side of the inner wall of the main body, a first radiator is installed on the upper side of the inner wall of the main body, and a circuit breaker component is installed on the upper side of the inner wall of the main body; The sealing assembly includes: a dynamic ring, a static ring, a compression spring and a cooling assembly, and the cooling assembly is connected to the processor through a signal line; A dynamic ring is installed on the upper side of the inner wall of the main body, a static ring is installed on the upper side of the inner wall of the main body, a compression spring is installed on the upper side of the inner wall of the main body, and a cooling component is installed on the upper side of the inner wall of the main body; The circuit breaker assembly is equipped with a contact unit, an arc extinguishing unit and a release. Based on the electromagnetic and mechanical principles, when the circuit is working normally, the contact unit closes to allow current to pass. When a short circuit, overload or undervoltage fault occurs in the circuit, the release corresponding to the fault is operated to cut off the circuit.

[0012] Preferably, a phase change module is installed in the middle of the inner wall of the main body, and the phase change module includes: a box body, a material matrix, a sealing ring and a heat transfer component, the material matrix is ​​connected to the heat transfer component, and the heat transfer component is connected to the main body; A box body is installed in the middle of the inner wall of the main body, a material matrix is ​​installed in the middle of the inner wall of the main body, a sealing ring is installed in the middle of the inner wall of the main body, and a heat transfer component is installed in the middle of the inner wall of the main body.

[0013] Preferably, thermal modules are installed on both sides of the inner wall of the main body, and the thermal modules include: a motor, a fan blade and a heating wire, the motor is connected to the processor through a signal line, the motor is connected to the power supply through a signal line, the motor is connected to the fan blade through an extension shaft, and the heating wire is connected to the processor through a signal line; Motors are installed on both sides of the inner wall of the main body, fan blades are installed on both sides of the inner wall of the main body, and heating wires are installed on both sides of the inner wall of the main body.

[0014] Preferably, a cooling module is installed on the lower side of the inner wall of the main body, and the cooling module includes: a water tank, a water cooling head, a water pump and a second radiator, the water cooling head is connected to the main body, and the water pump is connected to the processor through a signal line; A water tank is installed on the lower side of the inner wall of the main body, a water cooling head is installed on the lower side of the inner wall of the main body, a water pump is installed on the lower side of the inner wall of the main body, and a second radiator is installed on the lower side of the inner wall of the main body.

[0015] Preferably, the preparation process of the material matrix is: Step 1: preparing 75 to 85 parts by weight of paraffin wax, 12 to 22 parts by weight of expanded graphite, 1 to 8 parts by weight of graphene aerogel, and 1 to 8 parts by weight of polyvinyl alcohol-based composite aerogel; Step 2: Heat the paraffin in a constant temperature box to obtain a paraffin solution; Step 3: Add expanded graphite, graphene aerogel and polyvinyl alcohol-based composite aerogel into the paraffin solution and stir them thoroughly to make them evenly dispersed; Step 4: Wait for the mixture to cool and solidify to obtain the material matrix.

[0016] Preferably, the preparation process of the graphene aerogel is: Step 1: Prepare wet gel through a sol-gel process; Step 2: Remove the solvent with large surface tension in the network air attack through the solvent exchange process; Step 3: Dry the solvent by supercritical drying to obtain graphene aerogel.

[0017] Preferably, the preparation process of the polyvinyl alcohol-based composite aerogel is: Step 1: prepare a sufficient amount of polyvinyl alcohol, add deionized water, stir and dissolve to obtain a polyvinyl alcohol solution; Step 2: prepare a sufficient amount of cross-linking agent, add deionized water, stir and dissolve to obtain a cross-linking agent solution; Step 3: adding the functional substance to the cross-linking agent solution, and stirring by ultrasonic to obtain a mixed solution A; Step 4: Add the mixed solution A to the polyvinyl alcohol solution and stir evenly to obtain a mixed solution B; Step 5: Wait for the mixed solution B to cool and solidify to obtain a polyvinyl alcohol-based composite aerogel.

[0018] Preferably, the functional substances include: cellulose, nano-light apatite, polypyrrole and composite oxide manganese ferrite.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the function of uninterrupted operation of the thermal management system by installing a conversion module, solves the problem of stopping working after a fault occurs in the thermal management system and the potential safety hazard caused by untimely heat dissipation, improves the working efficiency of the thermal management system, and reduces the possibility of overheating; 2. The present invention realizes the function of real-time monitoring of the internal thermal management system by installing a monitoring module, solves the problem of not understanding the internal situation of the thermal management system and not discovering the fault in time, improves the safety performance of the thermal management system, can carry out accurate repairs in time, and reduces the maintenance cost; 3. The present invention realizes the function of controlling the thermal management system by installing a partition module, solves the problem of the thermal management system continuing to work after a fault occurs, can isolate the faulty circuit inside the thermal management system, improves the safety index of the thermal management system, and avoids greater damage and loss caused by the fault to the system; 4. The present invention realizes the function of controlling the thermal management system by installing a phase change module, solves the problem of insufficient temperature control capability of the thermal management system and reduced performance due to internal temperature imbalance, improves the temperature control capability of the thermal management system, reduces the possibility of different temperatures in the thermal management system, extends the service life, reduces costs, and improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the monitoring module of the present invention; Figure 3 It is a schematic diagram of the conversion module structure of the present invention; Figure 4 It is a schematic diagram of the partition module structure of the present invention; Figure 5 It is a schematic diagram of the sealing assembly structure of the present invention; Figure 6 It is a schematic diagram of the phase change module structure of the present invention; Figure 7 It is a schematic diagram of the heat module structure of the present invention; Figure 8 It is a schematic diagram of the cooling module structure of the present invention.

[0021] In the figure: 1. main body; 2. thermal module; 3. first radiator; 4. housing; 5. phase change module; 6. water tank; 7. cooling module; 8. processor; 9. power supply; 10. monitoring module; 11. partition module; 12. conversion module; 13. switch; 14. double-row composite contact; 15. protection circuit; 16. backup circuit; 17. adapter; 18. temperature sensor; 19. current sensor; 20. voltage transformer; 21. alarm; 22. sealing assembly; 23. circuit breaker assembly; 24. moving ring; 25. static ring; 26. compression spring; 27. cooling assembly; 28. material matrix; 29. ​​sealing ring; 30. heat transfer assembly; 31. motor; 32. fan blade; 33. heating wire; 34. water cooling head; 35. water pump; 36. second radiator; 37. double interlocking unit. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1 See also Figure 1 and Figure 3, a thermal management system based on a toughened composite phase change heat storage material, comprising a main body 1, a conversion module 12, a monitoring module 10, a processor 8 and a power supply 9, wherein the conversion module 12 is connected to the power supply 9 via a signal line, the conversion module 12 is connected to the processor 8 via a signal line, the monitoring module 10 is connected to the power supply 9 via a signal line, and the processor 8 is connected to the power supply 9 via a signal line; A processor 8 is installed on the front side of the inner wall of the main body 1, a power supply 9 is installed on the front side of the inner wall of the main body 1, a conversion module 12 is installed on the front side of the inner wall of the main body 1, and a monitoring module 10 is installed on the front side of the inner wall of the main body 1; The conversion module 12 includes: a backup circuit 16, an adapter 17 and a protection circuit 15, and the adapter 17 is connected to the processor 8 through a signal line; An adapter 17 is installed on the front side of the inner wall of the main body 1, a backup circuit 16 is installed on the front side of the inner wall of the main body 1, and a protection circuit 15 is installed on the front side of the inner wall of the main body 1; The adapter 17 includes: a switch 13, a double-row composite contact 14 and a double interlocking unit 37; A switch 13 is installed on the front side of the inner wall of the main body 1, a double-row composite contact 14 is installed on the front side of the inner wall of the main body 1, and a double interlocking unit 37 is installed on the front side of the inner wall of the main body 1; Furthermore, during the internal operation of the thermal management system, when short circuit, overload, undervoltage and other conditions occur internally, the processor 8 receives a signal and controls the conversion module 12 to switch the internal circuit path, and connects the line path from the damaged circuit to the backup circuit 16 through the switch 13, so as to keep the internal functions operating normally, realize the uninterrupted operation of the thermal management system, solve the safety hazards caused by the thermal management system stopping working after a fault occurs and the untimely heat dissipation, improve the working efficiency of the thermal management system, and reduce the possibility of overheating.

[0026] Example 2 See also Figure 1 and Figure 2 , a thermal management system based on a toughened composite phase change heat storage material, the monitoring module 10 includes: a temperature sensor 18, a current sensor 19, a voltage transformer 20 and an alarm 21, the temperature sensor 18 is connected to the processor 8 through a signal line, the current sensor 19 is connected to the processor 8 through a signal line, the voltage transformer 20 is connected to the processor 8 through a signal line, and the alarm 21 is connected to the processor 8 through a signal line; A temperature sensor 18 is installed on the front side of the inner wall of the main body 1, a current sensor 19 is installed on the front side of the inner wall of the main body 1, a voltage transformer 20 is installed on the front side of the inner wall of the main body 1, and an alarm 21 is installed on the front side of the inner wall of the main body 1; The temperature sensor 18 is internally provided with a receiving unit, a detection unit and a conversion unit. When the temperature of an external object is higher than absolute zero, the receiving unit radiates infrared rays with a wavelength of 0.75-100µm. The detection unit converts the received infrared rays into electrical signals. After further processing of the electrical signals, the conversion unit transmits the information to the processor 8. The current sensor 19 is provided with an iron core and a winding. Based on Faraday's law of electromagnetic induction, when the measured current passes through the primary winding of the transformer, a magnetic field proportional to the current is generated. This magnetic field passes through the iron core and induces the secondary winding, thereby generating an induced electromotive force in the secondary winding. After the induced electromotive force is amplified and adjusted, a voltage signal proportional to the measured current is output, and the signal is transmitted to the processor 8; The voltage transformer 20 is provided with a primary winding, a secondary winding and an iron core. Based on the principle of electromagnetic induction, when a voltage is applied to the primary winding, an alternating magnetic flux is generated in the iron core, and an induced electromotive force proportional to the primary voltage is generated on the secondary winding, converting the high voltage into a low voltage signal suitable for measurement, and transmitting the information to the processor 8 after processing; Furthermore, during the operation of the thermal management system, the monitoring module 10 monitors the temperature, current and voltage of each component inside the system. The temperature sensor 18 receives infrared rays with a wavelength of 0.75-100µm emitted by the internal equipment through the receiving unit, converts the infrared rays into electrical signals through the receiving unit, and transmits the signals to the processor 8 after being processed by the conversion unit. The current sensor 19 generates a magnetic field in the winding through the passing current based on Faraday's law of electromagnetic induction. The magnetic field generates an induced electromotive force on the secondary winding after passing through the iron core, and transmits the signal to the processor 8 after conversion processing. The voltage transformer 20 is based on the principle of electromagnetic induction. It generates an alternating magnetic flux in the iron core by applying a voltage to the primary winding, and a corresponding proportional induced electromotive force is generated on the secondary winding, converting the high voltage into a low voltage, and transmitting the processed information to the processor 8, thereby realizing the function of real-time monitoring of the internal thermal management system, solving the problems of lack of understanding of the internal situation of the thermal management system and untimely discovery of faults, improving the safety performance of the thermal management system, enabling timely and accurate repairs, and reducing maintenance costs.

[0027] Example 3 See also Figure 1 , Figure 4 and Figure 5 , a thermal management system based on a toughened composite phase change heat storage material, a partition module 11 is installed on the upper side of the inner wall of the main body 1, and the partition module 11 includes: a sealing component 22, a first heat sink 3 and a circuit breaker component 23, the sealing component 22 is connected to the processor 8 through a signal line, the first heat sink 3 is connected to the processor 8 through a signal line, and the circuit breaker component 23 is connected to the processor 8 through a signal line; A sealing component 22 is installed on the upper side of the inner wall of the main body 1, a first heat sink 3 is installed on the upper side of the inner wall of the main body 1, and a circuit breaker component 23 is installed on the upper side of the inner wall of the main body 1; The sealing assembly 22 includes: a dynamic ring 24, a static ring 25, a compression spring 26 and a cooling assembly 27, and the cooling assembly 27 is connected to the processor 8 through a signal line; A dynamic ring 24 is installed on the upper side of the inner wall of the main body 1, a static ring 25 is installed on the upper side of the inner wall of the main body 1, a compression spring 26 is installed on the upper side of the inner wall of the main body 1, and a cooling component 27 is installed on the upper side of the inner wall of the main body 1; The circuit breaker assembly 23 is internally provided with a contact unit, an arc extinguishing unit and a release. Based on the electromagnetic principle and the mechanical principle, when the circuit is working normally, the contact unit is closed to allow current to pass through. When a short circuit, overload or undervoltage fault occurs in the circuit, the release corresponding to the fault is operated to cut off the circuit. Furthermore, during the operation of the thermal management system, after an internal fault occurs, the processor 8 receives the fault information and controls the release inside the isolation component 23 to operate the corresponding type of release to cut off the circuit. At the same time, the sealing component 22 is controlled to seal the interior, and the compression spring 26 pushes the dynamic ring 24 to seal the interior of the thermal management system. The cooling component 27 starts to operate and cools the interior, thereby realizing the function of controlling the thermal management system and solving the problem of the thermal management system continuing to work after a fault occurs. The faulty circuit inside the thermal management system can be isolated, thereby improving the safety index of the thermal management system and preventing the fault from causing greater damage and loss to the system.

[0028] Example 4 See also Figure 1 and Figure 6 , a thermal management system based on a toughened composite phase change heat storage material, a phase change module 5 is installed in the middle of the inner wall of the main body 1, the phase change module 5 includes: a box 4, a material matrix 28, a sealing ring 29 and a heat transfer component 30, the material matrix 28 is connected to the heat transfer component 30, and the heat transfer component 30 is connected to the main body 1; A box body 4 is installed in the middle of the inner wall of the main body 1, a material base 28 is installed in the middle of the inner wall of the main body 1, a sealing ring 29 is installed in the middle of the inner wall of the main body 1, and a heat transfer component 30 is installed in the middle of the inner wall of the main body 1; The preparation process of the material matrix 28 is as follows: Step 1: Prepare 80 parts by weight of paraffin wax, 16 parts of expanded graphite, 3 parts of graphene aerogel and 1 part of polyvinyl alcohol-based composite aerogel; Step 2: Heat the paraffin in a constant temperature box to obtain a paraffin solution; Step 3: Add expanded graphite, graphene aerogel and polyvinyl alcohol-based composite aerogel into the paraffin solution and stir them thoroughly to make them evenly dispersed; Step 4: Wait for the mixture to cool and solidify to obtain a material matrix 28; The preparation process of the graphene aerogel is as follows: Step 1: Prepare wet gel through a sol-gel process; Step 2: Remove the solvent with large surface tension in the network air attack through the solvent exchange process; Step 3: Drying the solvent by supercritical drying to obtain graphene aerogel; The preparation process of the polyvinyl alcohol-based composite aerogel is as follows: Step 1: prepare a sufficient amount of polyvinyl alcohol, add deionized water, stir and dissolve to obtain a polyvinyl alcohol solution; Step 2: prepare a sufficient amount of cross-linking agent, add deionized water, stir and dissolve to obtain a cross-linking agent solution; Step 3: adding the functional substance to the cross-linking agent solution, and stirring by ultrasonic to obtain a mixed solution A; Step 4: Add the mixed solution A to the polyvinyl alcohol solution and stir evenly to obtain a mixed solution B; Step 5: Wait for the mixed solution B to cool and solidify to obtain a polyvinyl alcohol-based composite aerogel; The functional substances include: cellulose, nano-light apatite, polypyrrole and composite oxide manganese ferrite; Furthermore, 80 parts by weight of paraffin wax, 16 parts of expanded graphite, 3 parts of graphene aerogel and 1 part of polyvinyl alcohol-based composite aerogel are prepared, the paraffin wax is placed in a constant temperature box and heated to obtain a paraffin solution, the expanded graphite, graphene aerogel and polyvinyl alcohol-based composite aerogel are added to the paraffin solution, and the mixture is fully stirred, and the mixture is waited for to be cooled and solidified to obtain a material matrix 28. The heat generated during the operation of the thermal management system is transferred to the material matrix 28 through the heat transfer component 30, and the internal heat is consumed by the material matrix 28 being converted from solid to liquid after being heated, thereby realizing the excellent temperature control function of the thermal management system, solving the problems of insufficient temperature control ability of the thermal management system and internal temperature imbalance reducing performance, improving the temperature control ability of the thermal management system, reducing the possibility of different temperatures in the thermal management system, extending the service life, reducing costs, and improving economic benefits.

[0029] Example 5 See also Figure 1 , Figure 4 , Figure 5 and Figure 8, a thermal management system based on a toughened composite phase change heat storage material, a partition module 11 is installed on the upper side of the inner wall of the main body 1, and the partition module 11 includes: a sealing component 22, a first heat sink 3 and a circuit breaker component 23, the sealing component 22 is connected to the processor 8 through a signal line, the first heat sink 3 is connected to the processor 8 through a signal line, and the circuit breaker component 23 is connected to the processor 8 through a signal line; A sealing component 22 is installed on the upper side of the inner wall of the main body 1, a first heat sink 3 is installed on the upper side of the inner wall of the main body 1, and a circuit breaker component 23 is installed on the upper side of the inner wall of the main body 1; The sealing assembly 22 includes: a dynamic ring 24, a static ring 25, a compression spring 26 and a cooling assembly 27, and the cooling assembly 27 is connected to the processor 8 through a signal line; A dynamic ring 24 is installed on the upper side of the inner wall of the main body 1, a static ring 25 is installed on the upper side of the inner wall of the main body 1, a compression spring 26 is installed on the upper side of the inner wall of the main body 1, and a cooling component 27 is installed on the upper side of the inner wall of the main body 1; The circuit breaker assembly 23 is internally provided with a contact unit, an arc extinguishing unit and a release. Based on the electromagnetic principle and the mechanical principle, when the circuit is working normally, the contact unit is closed to allow current to pass. When a short circuit, overload or undervoltage fault occurs in the circuit, the release corresponding to the fault is operated to cut off the circuit. A cooling module 7 is installed on the lower side of the inner wall of the main body 1, and the cooling module 7 includes: a water tank 6, a water cooling head 34, a water pump 35 and a second radiator 36, the water cooling head 34 is connected to the main body 1, and the water pump 35 is connected to the processor 8 through a signal line; A water tank 6 is installed on the lower side of the inner wall of the main body 1, a water cooling head 34 is installed on the lower side of the inner wall of the main body 1, a water pump 35 is installed on the lower side of the inner wall of the main body 1, and a second radiator 36 is installed on the lower side of the inner wall of the main body 1; Furthermore, during operation of the thermal management system, the processor 8 controls the cooling module 7 to absorb internal heat, the water pump 35 draws water from the water tank 6, and absorbs internal heat through the water cooling head 34 to ensure the operating temperature of the thermal management system. After a fault occurs, the isolation module 11 cuts off power to the internal thermal management system and simultaneously cuts off the internal cooling and heat dissipation effect of the cooling module 7. However, heat still exists inside the thermal management system. The processor 8 controls the cooling component 27 to connect to the water tank 6 to absorb the internal heat, thereby realizing the cooling function of the thermal management system after a fault occurs, solving the problem of internal heat retention when the thermal management system stops working unexpectedly, thereby increasing the service life of the thermal management system and reducing the possibility of accidents caused by excessive temperature.

[0030] Example 6 A thermal management system based on a toughened composite phase change heat storage material, wherein a repair module is installed in the middle of the inner wall of the main body 1, the repair module is connected to the processor 8 through a signal line, and the repair module is connected to the power supply 9 through a signal line; The repair module includes: a common line, a repair line and a switching unit. The common line is installed in the middle of the main body 1, the repair line is installed in the middle of the inner wall of the main body 1, and the switching unit is installed in the middle of the inner wall of the main body 1. The switching unit is connected to the processor 8 through a signal line; Furthermore, when a line problem occurs inside the thermal management system during operation, the processor 8 locates the position of the faulty line through the information transmitted back by the current sensor 19 and the voltage transformer 20, and the processor 8 controls the switching unit to switch the common line of this part to the repair line, so as to maintain the thermal management system to continue working, thereby realizing the precise positioning and repair function of the faulty line, solving the problem that the line fault cannot be located and the repair time is long, reducing maintenance costs, improving the working efficiency of the thermal management system, and improving the user experience of using the thermal management system.

[0031] Working principle: During the operation of the thermal management system, when a short circuit, overload, undervoltage or other conditions occur inside, the processor 8 receives a signal and controls the conversion module 12 to switch the internal circuit path, and connects the line path from the damaged circuit to the backup circuit 16 through the switch 13 to keep the internal functions operating normally; During the operation of the thermal management system, the monitoring module 10 monitors the temperature, current and voltage of each component inside the system. The temperature sensor 18 receives infrared rays with a wavelength of 0.75-100µm emitted by the internal device through the receiving unit, converts the infrared rays into electrical signals through the receiving unit, and transmits the signals to the processor 8 after being processed by the conversion unit. The current sensor 19 generates a magnetic field in the winding based on Faraday's law of electromagnetic induction through the passing current. The magnetic field generates an induced electromotive force on the secondary winding after passing through the iron core, and transmits the signal to the processor 8 after conversion processing. The voltage transformer 20 generates an alternating magnetic flux in the iron core based on the principle of electromagnetic induction by applying a voltage to the primary winding. A corresponding proportional induced electromotive force is generated on the secondary winding, and the high voltage is converted into a low voltage, and the processed information is transmitted to the processor 8. During the operation of the thermal management system, after an internal fault occurs, the processor 8 receives the fault information and controls the release inside the partition component 23 to operate the corresponding type of release to cut off the circuit. At the same time, the sealing component 22 is controlled to seal the interior, and the compression spring 26 pushes the dynamic ring 24 to seal the interior of the thermal management system. During the operation of the thermal management system, the processor 8 controls the cooling module 7 to absorb the heat inside, and the water pump 35 draws water from the water tank 6 to absorb the internal heat through the water cooling head to ensure the working temperature of the thermal management system. After a fault occurs, the partition module 11 cuts off the power supply to the thermal management system and cuts off the cooling and heat dissipation effect of the cooling module 7 on the interior. However, there is still heat inside the thermal management system. The processor 8 controls the cooling component 27 to connect to the water tank 6 to absorb the internal heat. Prepare 80 parts by weight of paraffin wax, 16 parts of expanded graphite, 3 parts of graphene aerogel and 1 part of polyvinyl alcohol-based composite aerogel, put the paraffin wax into a constant temperature box and heat it to obtain a paraffin solution, add expanded graphite, graphene aerogel and polyvinyl alcohol-based composite aerogel to the paraffin solution, stir well, wait for the mixture to cool and solidify, and obtain a material matrix 28. The heat generated during the operation of the thermal management system is transferred to the material matrix 28 through the heat transfer component 30, and the internal heat is consumed by the material matrix 28 being converted from solid to liquid after being heated.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A thermal management system based on reinforced composite phase change thermal storage materials. Features: The device comprises a main body (1), a conversion module (12), a monitoring module (10), a processor (8) and a power supply (9), wherein the conversion module (12) is connected to the power supply (9) via a signal line, the conversion module (12) is connected to the processor (8) via a signal line, the monitoring module (10) is connected to the power supply (9) via a signal line, and the processor (8) is connected to the power supply (9) via a signal line; A processor (8) is installed on the front side of the inner wall of the main body (1), a power supply (9) is installed on the front side of the inner wall of the main body (1), a conversion module (12) is installed on the front side of the inner wall of the main body (1), and a monitoring module (10) is installed on the front side of the inner wall of the main body (1); The conversion module (12) comprises: a backup circuit (16), an adapter (17) and a protection circuit (15); the adapter (17) is connected to the processor (8) via a signal line; An adapter (17) is installed on the front side of the inner wall of the main body (1), a backup circuit (16) is installed on the front side of the inner wall of the main body (1), and a protection circuit (15) is installed on the front side of the inner wall of the main body (1); The adapter (17) comprises: a switch (13), a double-row composite contact (14) and a double interlocking unit (37); A switch (13) is installed on the front side of the inner wall of the main body (1), a double-row composite contact (14) is installed on the front side of the inner wall of the main body (1), and a double interlocking unit (37) is installed on the front side of the inner wall of the main body (1).

2. A thermal management system based on a toughened composite phase change thermal storage material according to claim 1, Features: The monitoring module (10) comprises: a temperature sensor (18), a current sensor (19), a voltage transformer (20) and an alarm (21), wherein the temperature sensor (18) is connected to the processor (8) via a signal line, the current sensor (19) is connected to the processor (8) via a signal line, the voltage transformer (20) is connected to the processor (8) via a signal line, and the alarm (21) is connected to the processor (8) via a signal line; A temperature sensor (18) is installed on the front side of the inner wall of the main body (1), a current sensor (19) is installed on the front side of the inner wall of the main body (1), a voltage transformer (20) is installed on the front side of the inner wall of the main body (1), and an alarm (21) is installed on the front side of the inner wall of the main body (1); The temperature sensor (18) is internally provided with a receiving unit, a detecting unit and a converting unit. When the temperature of an external object is higher than absolute zero, the receiving unit radiates infrared rays in the wavelength band of 0.75-100 µm. The detecting unit converts the received infrared rays into electrical signals. The converting unit further processes the electrical signals and transmits the information to the processor (8). The current sensor (19) is provided with an iron core and a winding inside. Based on Faraday's law of electromagnetic induction, when the current to be measured passes through the primary winding of the transformer, a magnetic field proportional to the current is generated. This magnetic field passes through the iron core and induces the secondary winding, thereby generating an induced electromotive force in the secondary winding. After the induced electromotive force is amplified and adjusted, a voltage signal proportional to the current to be measured is output, and the signal is transmitted to the processor (8); The voltage transformer (20) is provided with a primary winding, a secondary winding and an iron core. Based on the principle of electromagnetic induction, when a voltage is applied to the primary winding, an alternating magnetic flux is generated in the iron core, and an induced electromotive force proportional to the primary voltage is generated on the secondary winding, converting the high voltage into a low voltage signal suitable for measurement, and transmitting the information to the processor (8) after processing.

3. A thermal management system based on a toughened composite phase change thermal storage material according to claim 1, Features: A partition module (11) is installed on the upper side of the inner wall of the main body (1), the partition module (11) comprising: a sealing component (22), a first heat sink (3) and a circuit breaker component (23), the sealing component (22) being connected to the processor (8) via a signal line, the first heat sink (3) being connected to the processor (8) via a signal line, and the circuit breaker component (23) being connected to the processor (8) via a signal line; A sealing component (22) is installed on the upper side of the inner wall of the main body (1), a first heat sink (3) is installed on the upper side of the inner wall of the main body (1), and a circuit breaker component (23) is installed on the upper side of the inner wall of the main body (1); The sealing assembly (22) comprises: a dynamic ring (24), a static ring (25), a compression spring (26) and a cooling assembly (27), and the cooling assembly (27) is connected to the processor (8) via a signal line; A dynamic ring (24) is installed on the upper side of the inner wall of the main body (1), a static ring (25) is installed on the upper side of the inner wall of the main body (1), a compression spring (26) is installed on the upper side of the inner wall of the main body (1), and a cooling component (27) is installed on the upper side of the inner wall of the main body (1); The circuit breaker assembly (23) is internally provided with a contact unit, an arc extinguishing unit and a release. Based on electromagnetic principles and mechanical principles, when the circuit works normally, the contact unit is closed to allow current to pass. When a short circuit, overload or undervoltage fault occurs in the circuit, the release corresponding to the fault is operated to cut off the circuit.

4. A thermal management system based on a toughened composite phase change thermal storage material according to claim 1, Features: A phase change module (5) is installed in the middle of the inner wall of the main body (1), the phase change module (5) comprising: a box body (4), a material matrix (28), a sealing ring (29) and a heat transfer component (30), the material matrix (28) being connected to the heat transfer component (30), and the heat transfer component (30) being connected to the main body (1); A box body (4) is installed in the middle of the inner wall of the main body (1), a material base (28) is installed in the middle of the inner wall of the main body (1), a sealing ring (29) is installed in the middle of the inner wall of the main body (1), and a heat transfer component (30) is installed in the middle of the inner wall of the main body (1).

5. A thermal management system based on a toughened composite phase change thermal storage material according to claim 1, Features: Thermal modules (2) are installed on both sides of the inner wall of the main body (1), and the thermal module (2) comprises: a motor (31), a fan blade (32) and a heating wire (33), the motor (31) is connected to the processor (8) via a signal line, the motor (31) is connected to the power supply (9) via a signal line, the motor (31) is connected to the fan blade (32) via an extended shaft, and the heating wire (33) is connected to the processor (8) via a signal line; Motors (31) are installed on both sides of the inner wall of the main body (1), fan blades (32) are installed on both sides of the inner wall of the main body (1), and heating wires (33) are installed on both sides of the inner wall of the main body (1).

6. A thermal management system based on a toughened composite phase change thermal storage material according to claim 1, Features: A cooling module (7) is installed on the lower side of the inner wall of the main body (1), and the cooling module (7) comprises: a water tank (6), a water cooling head (34), a water pump (35) and a second radiator (36), the water cooling head (34) is connected to the main body (1), and the water pump (35) is connected to the processor (8) via a signal line; A water tank (6) is installed on the lower side of the inner wall of the main body (1), a water cooling head (34) is installed on the lower side of the inner wall of the main body (1), a water pump (35) is installed on the lower side of the inner wall of the main body (1), and a second radiator (36) is installed on the lower side of the inner wall of the main body (1).

7. A thermal management system based on a toughened composite phase change thermal storage material according to claim 4, Features: The preparation process of the material matrix (28) is as follows: Step 1: preparing 75 to 85 parts by weight of paraffin wax, 12 to 22 parts by weight of expanded graphite, 1 to 8 parts by weight of graphene aerogel, and 1 to 8 parts by weight of polyvinyl alcohol-based composite aerogel; Step 2: Heat the paraffin in a constant temperature box to obtain a paraffin solution; Step 3: Add expanded graphite, graphene aerogel and polyvinyl alcohol-based composite aerogel into the paraffin solution and stir them thoroughly to make them evenly dispersed; Step 4: Wait for the mixture to cool and solidify to obtain a material matrix (28).

8. A thermal management system based on a toughened composite phase change thermal storage material according to claim 7, Features: The preparation process of the graphene aerogel is as follows: Step 1: Prepare wet gel through a sol-gel process; Step 2: Remove the solvent with large surface tension in the network air attack through the solvent exchange process; Step 3: Dry the solvent by supercritical drying to obtain graphene aerogel.

9. A thermal management system based on a toughened composite phase change thermal storage material according to claim 7, Features: The preparation process of the polyvinyl alcohol-based composite aerogel is as follows: Step 1: prepare a sufficient amount of polyvinyl alcohol, add deionized water, stir and dissolve to obtain a polyvinyl alcohol solution; Step 2: prepare a sufficient amount of cross-linking agent, add deionized water, stir and dissolve to obtain a cross-linking agent solution; Step 3: adding the functional substance to the cross-linking agent solution, and stirring by ultrasonic to obtain a mixed solution A; Step 4: Add the mixed solution A to the polyvinyl alcohol solution and stir evenly to obtain a mixed solution B; Step 5: Wait for the mixed solution B to cool and solidify to obtain a polyvinyl alcohol-based composite aerogel.

10. A thermal management system based on a toughened composite phase change thermal storage material according to claim 9, Features: The functional substances include: cellulose, nanometer light apatite, polypyrrole and composite oxide manganese ferrite.

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