A thermal management system based on a toughened composite phase change heat storage material

Abstract

The present invention discloses a thermal management system based on a toughened composite phase change heat storage material, which relates to the technical field of thermal management systems. The system includes a main body, a conversion module, a monitoring module, a processor, and a power supply. The conversion module is connected to the power supply through a signal line, the conversion module is connected to the processor through a signal line, the monitoring module is connected to the power supply through a signal line, the processor is connected to 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 present invention realizes the function of the thermal management system working continuously, solves the problems that the thermal management system stops working after a fault occurs inside and there are potential safety hazards due to untimely heat dissipation, improves the working efficiency of the thermal management system, and reduces the possibility of overheating conditions occurring.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management systems, and particularly to a thermal management system based on a toughened 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, which makes them efficient energy storage materials. With the progress of technology, the research on phase change materials has gradually deepened, developing from single materials to composite materials, aiming to solve the leakage problem, improve the thermal conductivity, and expand the application fields. High-end composite phase change energy storage materials, such as "molten eutectic mixed fatty alcohols" made from animal and plant fats, show 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, emission reduction, and improving energy utilization efficiency. With the development of fields such as automobiles and electronic devices, each component needs to maintain a specific temperature range during efficient operation to ensure performance, extend lifespan, and improve safety. The thermal management system realizes precise temperature control through processes such as heat generation, transfer, conversion, and dissipation, and uses various methods such as air cooling, liquid cooling, and heat pumps, combined with advanced technologies such as phase change materials, to ensure the stable operation of equipment under complex working conditions;

[0003] There are some defects in the existing thermal management systems applying phase change materials. The low thermal conductivity of the phase change materials affects the working efficiency of the thermal management system, and the large contact thermal resistance of the heat transfer path reduces the working performance of the thermal management system. The selection and dosage of the phase change materials cannot be unified, making it difficult to precisely control the temperature, thus affecting the safety and lifespan during use. At the same time, the physical properties of the phase change materials themselves, such as high bulk density, high thermal conductivity but poor heat preservation, and easy to fall off, cause certain troubles in the application of the phase change materials in the thermal management system. When a fault occurs inside, it is often impossible to locate the problem immediately and solve the problem in a timely manner.

[0004] Patent document CN108649298B discloses an electric vehicle battery thermal management system based on a phase change material. The above patent realizes the improvement of the temperature consistency of the battery pack, saves energy, and uses the latent heat of the phase change material and the heat insulation ability of the temperature control box to maintain the temperature of the battery pack for a certain period of time, which is beneficial to the start and charging of the vehicle at low temperatures. However, the above patent cannot realize the function of the thermal management system working continuously.

[0005] Patent document CN106602171B discloses a hierarchical battery thermal management system coupling phase change material and air. The above patent realizes the organic coupling of two thermal management technologies, namely, phase change material cooling and air cooling, efficiently removes the heat generated by the battery, and uses the hierarchical arrangement of phase change materials and fins to effectively reduce the temperature difference inside / between single cells, increase the temperature uniformity of single cells / battery packs, and has obvious temperature control and temperature equalization effects, with a compact structure, convenient installation and maintenance. However, the above patent cannot realize the function of real-time monitoring of the internal thermal management system.

[0006] Patent document CN108682921B discloses an electric vehicle battery thermal management system based on phase change material heat equalization and heat storage technology. The above patent realizes the improvement of the temperature consistency of battery cells and battery packs, as well as the cooling and heating speeds, and at the same time has high-temperature cooling function and low-temperature heating function, reduces energy consumption, and reduces the damage to the capacity and life of the battery pack. The structure is simple and the cost is low. However, the above patent cannot realize the function of controlling the thermal management system.

[0007] Patent document CN109888432B discloses a lithium-ion battery thermal management system containing spray cooling and phase change material heat storage. The above patent realizes that it can obtain effective heat during cold start under low-temperature conditions to heat the battery, and at the same time can quickly and efficiently dissipate heat and reduce the surface temperature gradient when the lithium-ion battery overheats. However, the above patent cannot realize the excellent temperature control function of the thermal management system.

[0008] 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 internal thermal management system, cannot realize the function of controlling the thermal management system, and cannot realize the excellent temperature control function of the thermal management system, resulting in problems such as the thermal management system stopping working after a failure inside, potential safety hazards due to untimely heat dissipation, lack of understanding of the internal situation of the thermal management system, failure to detect in time after a failure, the thermal management system continuing to work after a failure, insufficient temperature control ability of the thermal management system, and performance degradation due to internal temperature imbalance.

[0009] Therefore, this application proposes a thermal management system based on toughened composite phase change heat storage materials that can realize the function of uninterrupted operation of the thermal management system, can realize the function of real-time monitoring of the internal thermal management system, can realize the function of controlling the thermal management system, and can realize the excellent temperature control function of the thermal management system. Summary of the Invention

[0010] The object of the present invention is to provide a thermal management system based on a toughened composite phase change heat storage material, so as to solve the technical problems proposed in the above background art, such as the function of enabling the thermal management system to work uninterruptedly cannot be realized, the function of realizing real-time monitoring of the inside of the thermal management system cannot be realized, the function of controlling the thermal management system cannot be realized, the function of excellent temperature control of the thermal management system cannot be realized, resulting in the thermal management system stopping working after a failure inside, potential safety hazards due to untimely heat dissipation, lack of understanding of the internal situation of the thermal management system, failure to discover in time after a failure, the thermal management system continuing to work after a failure, insufficient temperature control ability of the thermal management system, and reduced performance due to internal temperature imbalance.

[0011] To achieve the above object, the present invention provides the following technical solution: 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. The conversion module is connected to the power supply through a signal line, the conversion module is connected to the processor through a signal line, the monitoring module is connected to the power supply through a signal line, and the processor is connected to the power supply through a signal line;

[0012] 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;

[0013] The conversion module includes: a standby circuit, a transfer switch and a protection circuit. The transfer switch is connected to the processor through a signal line;

[0014] The transfer switch is installed on the front side of the inner wall of the main body, the standby circuit is installed on the front side of the inner wall of the main body, and the protection circuit is installed on the front side of the inner wall of the main body;

[0015] The transfer switch includes: a switch, a double-row composite contact and a double interlock unit;

[0016] The switch is installed on the front side of the inner wall of the main body, the double-row composite contact is installed on the front side of the inner wall of the main body, and the double interlock unit is installed on the front side of the inner wall of the main body.

[0017] Preferably, the monitoring module includes: a temperature sensor, a current sensor, a voltage transformer and an alarm. The temperature sensor is connected to the processor through a signal line, the current sensor is connected to the processor through a signal line, the voltage transformer is connected to the processor through a signal line, and the alarm is connected to the processor through a signal line;

[0018] The temperature sensor is installed on the front side of the inner wall of the main body, the current sensor is installed on the front side of the inner wall of the main body, the voltage transformer is installed on the front side of the inner wall of the main body, and the alarm is installed on the front side of the inner wall of the main body;

[0019] Inside the temperature sensor, there are a receiving unit, a detecting unit, and a converting unit. When an object existing externally has a temperature higher than absolute zero and radiates infrared rays with a wavelength band of 0.75 - 100 µm, the receiving unit receives the infrared rays, the detecting unit converts the received infrared rays into an electrical signal, and after the converting unit further processes the electrical signal, it transmits the information to the processor.

[0020] Inside the current sensor, there are an iron core and windings. Based on Faraday's law of electromagnetic induction, when the measured current passes through the main winding of the current 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 regulated, a voltage signal proportional to the measured current is output and transmitted to the processor.

[0021] Inside the voltage transformer, there are 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 in the secondary winding, converting the high voltage into a low voltage signal suitable for measurement. After processing, the information is transmitted to the processor.

[0022] Preferably, a partition module is installed on the upper side of the inner wall of the main body. The partition module includes: a sealing component, a first radiator, and a circuit-breaking component. The sealing component is connected to the processor through a signal line, the first radiator is connected to the processor through a signal line, and the circuit-breaking component is connected to the processor through a signal line.

[0023] 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-breaking component is installed on the upper side of the inner wall of the main body.

[0024] The sealing component includes: a moving ring, a static ring, a compression spring, and a temperature-reducing component. The temperature-reducing component is connected to the processor through a signal line.

[0025] A moving 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 temperature-reducing component is installed on the upper side of the inner wall of the main body.

[0026] Inside the circuit-breaking component, there are a contact unit, an arc-extinguishing unit, and a release. Based on electromagnetic and mechanical principles, when the circuit is working normally, the contact unit is closed to allow current to pass through. When faults such as short circuit, overload, and under-voltage occur in the circuit, the corresponding release operates to cut off the circuit.

[0027] Preferably, a phase-change module is installed in the middle of the inner wall of the main body. 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.

[0028] In the middle of the inner wall of the main body, a box body, a material matrix, a sealing ring, and a heat transfer component are installed.

[0029] Preferably, heat modules are installed on both sides of the inner wall of the main body. The heat module includes: a motor, a fan blade, and a heating wire. The motor is connected to the processor through a signal wire, the motor is connected to the power supply through a signal wire, the motor is connected to the fan blade through an extended shaft, and the heating wire is connected to the processor through a signal wire;

[0030] 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.

[0031] Preferably, a cooling module is installed on the lower side of the inner wall of the main body. The cooling module includes: a water tank, a water-cooled head, a water pump, and a second radiator. The water-cooled head is connected to the main body, and the water pump is connected to the processor through a signal wire;

[0032] A water tank is installed on the lower side of the inner wall of the main body, a water-cooled 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.

[0033] Preferably, the preparation process of the material matrix is as follows:

[0034] Step 1: Prepare components in parts by weight including 75 to 85 parts of paraffin wax, 12 to 22 parts of expanded graphite, 1 to 8 parts of graphene aerogel, and 1 to 8 parts of polyvinyl alcohol-based composite aerogel;

[0035] Step 2: Put the paraffin wax into an incubator for heating to obtain a paraffin wax solution;

[0036] Step 3: Add the expanded graphite, graphene aerogel, and polyvinyl alcohol-based composite aerogel to the paraffin wax solution and stir well to make them evenly dispersed;

[0037] Step 4: Wait for the mixture to cool and solidify to obtain the material matrix.

[0038] Preferably, the preparation process of the graphene aerogel is as follows:

[0039] Step 1: Obtain a wet gel through a sol-gel process;

[0040] Step 2: Remove the solvent with a relatively large surface tension in the network voids through a solvent exchange process;

[0041] Step 3: Dry the solvent through supercritical drying to obtain the graphene aerogel.

[0042] Preferably, the preparation process of the polyvinyl alcohol-based composite aerogel is as follows:

[0043] Step 1: Prepare a sufficient amount of polyvinyl alcohol, add deionized water, and stir to dissolve to obtain a polyvinyl alcohol solution;

[0044] Step 2: Prepare a sufficient amount of crosslinking agent, add deionized water, and stir to dissolve to obtain a crosslinking agent solution;

[0045] Step 3: Add a functional substance to the crosslinking agent solution, and stir ultrasonically to obtain a mixed solution A;

[0046] Step 4: Add the mixed solution A to the polyvinyl alcohol solution and stir evenly to obtain a mixed solution B;

[0047] Step 5: Wait for the mixed solution B to cool and solidify to obtain a polyvinyl alcohol-based composite aerogel.

[0048] Preferably, the functional substance includes: cellulose, nano-hydroxyapatite, polypyrrole, and composite oxide manganese ferrite.

[0049] Compared with the prior art, the beneficial effects of the present invention are:

[0050] 1. By installing a conversion module, the present invention realizes the function of the uninterrupted operation of the thermal management system, solves the problems of the thermal management system stopping working after a fault occurs inside and the potential safety hazards caused by untimely heat dissipation, improves the working efficiency of the thermal management system, and reduces the possibility of overheating;

[0051] 2. By installing a monitoring module, the present invention realizes the function of real-time monitoring of the inside of the thermal management system, solves the problems of not understanding the internal situation of the thermal management system and not discovering the fault in time after the fault occurs, improves the safety performance of the thermal management system, can perform precise repair in time, and reduces the maintenance cost;

[0052] 3. By installing a partition module, the present invention realizes the function of controlling the thermal management system, 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 losses caused by the fault to the inside of the system;

[0053] 4. By installing a phase change module, the present invention realizes the function of controlling the thermal management system, solves the problems of insufficient temperature control ability of the thermal management system and the reduction of performance due to internal temperature imbalance, improves the temperature control ability of the thermal management system, reduces the possibility of uneven temperature in the thermal management system, extends the service life, reduces the cost, and improves the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a front view structural schematic diagram of the present invention;

[0055] Figure 2Schematic structural diagram of the monitoring module of the present invention;

[0056] Figure 3 Schematic structural diagram of the conversion module of the present invention;

[0057] Figure 4 Schematic structural diagram of the partition module of the present invention;

[0058] Figure 5 Schematic structural diagram of the sealing component of the present invention;

[0059] Figure 6 Schematic structural diagram of the phase change module of the present invention;

[0060] Figure 7 Schematic structural diagram of the heat module of the present invention;

[0061] Figure 8 Schematic structural diagram of the cooling module of the present invention.

[0062] In the figure: 1, main body; 2, heat module; 3, first radiator; 4, box body; 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, standby circuit; 17, adapter; 18, temperature sensor; 19, current sensor; 20, voltage transformer; 21, alarm; 22, sealing component; 23, open-circuit component; 24, moving ring; 25, static ring; 26, compression spring; 27, temperature reduction component; 28, material substrate; 29, sealing ring; 30, heat transfer component; 31, motor; 32, fan blade; 33, heating wire; 34, water-cooled head; 35, water pump; 36, second radiator; 37, double interlock unit. Detailed implementation manners

[0063] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0064] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0065] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0066] Please refer to 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. The conversion module 12 is connected to the power supply 9 through a signal line, the conversion module 12 is connected to the processor 8 through a signal line, the monitoring module 10 is connected to the power supply 9 through a signal line, and the processor 8 is connected to the power supply 9 through a signal line;

[0067] The processor 8 is installed on the front side of the inner wall of the main body 1, the power supply 9 is installed on the front side of the inner wall of the main body 1, the conversion module 12 is installed on the front side of the inner wall of the main body 1, and the monitoring module 10 is installed on the front side of the inner wall of the main body 1;

[0068] The conversion module 12 includes: a standby circuit 16, an adapter 17, and a protection circuit 15. The adapter 17 is connected to the processor 8 through a signal line;

[0069] The adapter 17 is installed on the front side of the inner wall of the main body 1, the standby circuit 16 is installed on the front side of the inner wall of the main body 1, and the protection circuit 15 is installed on the front side of the inner wall of the main body 1;

[0070] The adapter 17 includes: a switch 13, a dual-row composite contact 14, and a double interlock unit 37;

[0071] 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 interlock unit 37 is installed on the front side of the inner wall of the main body 1;

[0072] Furthermore, during the internal operation of the thermal management system, when short circuits, overloads, under-voltages, etc. occur inside, after the processor 8 receives the signal, it controls the conversion module 12 to switch the internal circuit path. The line path is connected from the damaged circuit to the standby circuit 16 through the switch 13, keeping the internal functions operating normally, realizing the function of the thermal management system working continuously, solving the problems that the thermal management system stops working after a fault occurs inside and there are safety hazards due to untimely heat dissipation, improving the working efficiency of the thermal management system, and reducing the possibility of overheating conditions. Embodiment 2

[0073] Please refer to 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;

[0074] 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;

[0075] The temperature sensor 18 internally is provided with a receiving unit, a detecting unit, and a converting unit. When the temperature of an external object is higher than absolute zero, infrared rays with a wavelength band of 0.75 - 100 µm are radiated outward. The detecting unit converts the received infrared rays into an electrical signal. After the converting unit further processes the electrical signal, the information is transmitted to the processor 8;

[0076] The current sensor 19 internally is provided with an iron core and windings. Based on Faraday's law of electromagnetic induction, when the measured current passes through the main winding of the transformer, a magnetic field proportional to the current is generated. This magnetic field passes through the iron core and is induced to the secondary winding, thereby generating an induced electromotive force in the secondary winding. After the induced electromotive force is amplified and regulated, a voltage signal proportional to the measured current is output and the signal is transmitted to the processor 8;

[0077] The potential transformer 20 internally 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 will be generated in the iron core, and an induced electromotive force proportional to the primary voltage will be generated on the secondary winding, converting the high voltage into a low voltage signal suitable for measurement. After processing, the information is transmitted to the processor 8;

[0078] Furthermore, during the operation of the thermal management system, the monitoring module 10 monitors various components inside the system in terms of temperature, current, and voltage. The temperature sensor 18 receives the infrared rays with wavelengths in the range of 0.75 - 100 µm emitted by the internal devices through the receiving unit, converts the infrared rays into electrical signals through the receiving unit, and after being processed by the conversion unit, transmits the signals to the processor 8. The current sensor 19, based on Faraday's law of electromagnetic induction, generates a magnetic field in the winding through the passing current. After the magnetic field passes through the iron core, an induced electromotive force is generated on the secondary winding, and after being processed by conversion, the signals are transmitted to the processor 8. The potential transformer 20, based on the principle of electromagnetic induction, generates an alternating magnetic flux in the iron core by applying a voltage to the primary winding, and a corresponding proportional induced electromotive force will be generated on the secondary winding, converting the high voltage into a low voltage, and transmitting the processed information to the processor 8, realizing the function of real-time monitoring inside the thermal management system, solving the problems of not understanding the internal situation of the thermal management system and not discovering faults in a timely manner, improving the safety performance of the thermal management system, enabling precise repair in a timely manner, and reducing the maintenance cost. Embodiment 3

[0079] Please refer to Figure 1 、 Figure 4 and Figure 5 , a thermal management system based on a toughened composite phase change heat storage material, wherein a partition module 11 is installed on the upper side of the inner wall of the main body 1. The partition module 11 includes: a sealing assembly 22, a first radiator 3, and a circuit-breaking assembly 23. The sealing assembly 22 is connected to the processor 8 through a signal line, the first radiator 3 is connected to the processor 8 through a signal line, and the circuit-breaking assembly 23 is connected to the processor 8 through a signal line;

[0080] A sealing assembly 22 is installed on the upper side of the inner wall of the main body 1, a first radiator 3 is installed on the upper side of the inner wall of the main body 1, and a circuit-breaking assembly 23 is installed on the upper side of the inner wall of the main body 1;

[0081] The sealing assembly 22 includes: a moving ring 24, a stationary ring 25, a compression spring 26, and a temperature-lowering assembly 27. The temperature-lowering assembly 27 is connected to the processor 8 through a signal line;

[0082] A moving ring 24 is installed on the upper side of the inner wall of the main body 1, a stationary 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 temperature-lowering assembly 27 is installed on the upper side of the inner wall of the main body 1;

[0083] Inside the open - circuit component 23, there are a contact unit, an arc - extinguishing unit and a release. Based on electromagnetic and mechanical principles, when the circuit is working properly, the contact unit is closed to allow current to pass through. When faults such as short - circuit, overload and under - voltage occur in the circuit, the corresponding release operates to cut off the circuit.

[0084] Furthermore, during the operation of the thermal management system, after a fault occurs inside, when the processor 8 receives the fault information, it controls the release inside the open - circuit component 23, operates the corresponding type of release to cut off the circuit. At the same time, it controls the sealing component 22 to seal the inside. The pressing spring 26 pushes the moving ring 24 to seal the inside of the thermal management system, and the cooling component 27 starts to operate to cool the inside. It realizes the function of controlling the thermal management system, solves the problem that the thermal management system continues 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 to the inside of the system caused by the fault. Embodiment 4

[0085] Please refer to Figure 1 and Figure 6 A thermal management system based on a toughened composite phase - change heat - storage material. In the middle of the inner wall of the main body 1, a phase - change module 5 is installed. The phase - change module 5 includes: a box body 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.

[0086] In the middle of the inner wall of the main body 1, a box body 4 is installed, in the middle of the inner wall of the main body 1, a material matrix 28 is installed, in the middle of the inner wall of the main body 1, a sealing ring 29 is installed, and in the middle of the inner wall of the main body 1, a heat - transfer component 30 is installed.

[0087] The preparation process of the material matrix 28 is as follows:

[0088] Step 1: Prepare components in parts by weight: 80 parts of paraffin wax, 16 parts of expanded graphite, 3 parts of graphene aerogel and 1 part of polyvinyl alcohol - based composite aerogel.

[0089] Step 2: Put the paraffin wax into an incubator and heat it to obtain a paraffin - wax solution.

[0090] Step 3: Add the expanded graphite, graphene aerogel and polyvinyl alcohol - based composite aerogel into the paraffin - wax solution and stir well to make them evenly dispersed.

[0091] Step 4: Wait for the mixture to cool and solidify to obtain the material matrix 28.

[0092] The preparation process of the graphene aerogel is as follows:

[0093] Step 1: Obtain a wet gel through a sol - gel process.

[0094] Step 2: Remove the solvent with a relatively large surface tension in the network voids through a solvent exchange process;

[0095] Step 3: Dry the solvent by supercritical drying method to obtain a graphene aerogel;

[0096] The preparation process of the polyvinyl alcohol-based composite aerogel is as follows:

[0097] Step 1: Prepare a sufficient amount of polyvinyl alcohol, add deionized water, and stir to dissolve to obtain a polyvinyl alcohol solution;

[0098] Step 2: Prepare a sufficient amount of cross-linking agent, add deionized water, and stir to dissolve to obtain a cross-linking agent solution;

[0099] Step 3: Add a functional substance to the cross-linking agent solution and stir ultrasonically to obtain a mixed solution A;

[0100] Step 4: Add the mixed solution A to the polyvinyl alcohol solution and stir evenly to obtain a mixed solution B;

[0101] Step 5: Wait for the mixed solution B to cool and solidify to obtain a polyvinyl alcohol-based composite aerogel;

[0102] The functional substances include: cellulose, nano-hydroxyapatite, polypyrrole, and composite oxide manganese ferrite;

[0103] Furthermore, prepare 80 parts of paraffin wax, 16 parts of expanded graphite, 3 parts of graphene aerogel, and 1 part of polyvinyl alcohol-based composite aerogel by weight. Put the paraffin wax into an incubator to heat to obtain a paraffin wax solution. Add expanded graphite, graphene aerogel, and polyvinyl alcohol-based composite aerosol to the paraffin wax solution, stir evenly, and wait for the mixture to cool and solidify 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. The material matrix 28 consumes internal heat by changing from solid state to liquid state after being heated, 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 performance reduction due to internal temperature imbalance, improving the temperature control ability of the thermal management system, reducing the possibility of uneven temperature in the thermal management system, extending the service life, reducing the cost, and improving the economic benefits. Example 5

[0104] Please refer to Figure 1 、 Figure 4 、 Figure 5 and Figure 8, a thermal management system based on a toughened composite phase change heat storage material. On the upper side of the inner wall of the main body 1, a partition module 11 is installed. The partition module 11 includes: a sealing component 22, a first radiator 3, and a circuit-breaking component 23. The sealing component 22 is connected to the processor 8 through a signal line, the first radiator 3 is connected to the processor 8 through a signal line, and the circuit-breaking component 23 is connected to the processor 8 through a signal line;

[0105] On the upper side of the inner wall of the main body 1, a sealing component 22 is installed. On the upper side of the inner wall of the main body 1, a first radiator 3 is installed. On the upper side of the inner wall of the main body 1, a circuit-breaking component 23 is installed;

[0106] The sealing component 22 includes: a moving ring 24, a stationary ring 25, a compression spring 26, and a temperature-lowering component 27. The temperature-lowering component 27 is connected to the processor 8 through a signal line;

[0107] On the upper side of the inner wall of the main body 1, a moving ring 24 is installed. On the upper side of the inner wall of the main body 1, a stationary 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, a temperature-lowering component 27 is installed;

[0108] Inside the circuit-breaking component 23, a contact unit, an arc-extinguishing unit, and a release are provided. Based on electromagnetic and mechanical principles, when the circuit is working normally, the contact unit is closed to allow current to pass through. When the circuit has faults such as short circuit, overload, and undervoltage, the corresponding release operates to cut off the circuit;

[0109] On the lower side of the inner wall of the main body 1, a cooling module 7 is installed. The cooling module 7 includes: a water tank 6, a water-cooled head 34, a water pump 35, and a second radiator 36. The water-cooled head 34 is connected to the main body 1. The water pump 35 is connected to the processor 8 through a signal line;

[0110] On the lower side of the inner wall of the main body 1, a water tank 6 is installed. On the lower side of the inner wall of the main body 1, a water-cooled 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, a second radiator 36 is installed;

[0111] Furthermore, during the operation of the thermal management system, the processor 8 controls the cooling module 7 to absorb heat inside. The water pump 35 pumps water from the water tank 6 and absorbs the internal heat through the water-cooled head 34 to ensure the working temperature of the thermal management system. After a fault occurs, the partition module 11 cuts off the power supply inside the thermal management system and at the same time cuts off the cooling and heat dissipation effect of the cooling module 7 on the inside. However, there is still heat inside the thermal management system. The processor 8 controls the temperature-lowering component 27 to connect to the water tank 6 to absorb the internal heat participating in the heat, realizing the cooling function after a fault occurs in the thermal management system, solving the problem of the heat remaining inside when the thermal management system stops working unexpectedly, improving the service life of the thermal management system, and reducing the possibility of accidents caused by excessive temperature. Embodiment 6

[0112] A thermal management system based on a toughened composite phase change heat storage material. In the middle of the inner wall of the main body 1, a repair module is installed. The repair module is connected to the processor 8 through a signal line and is connected to the power supply 9 through a signal line.

[0113] The repair module includes: a common circuit, a repair circuit, and a switching unit. The common circuit is installed in the middle of the interior of the main body 1, the repair circuit 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.

[0114] Furthermore, during the operation of the thermal management system, when a circuit problem occurs inside, the processor 8 locates the position of the faulty circuit through the information transmitted back by the current sensor 19 and the voltage transformer 20. The processor 8 controls the switching unit to switch the common circuit of this part to the repair circuit, maintaining the continuous operation of the thermal management system. This realizes the precise positioning and repair function of the faulty circuit, solves the problems of inability to locate circuit faults and long repair time, reduces the maintenance cost, improves the working efficiency of the thermal management system, and enhances the user experience of using the thermal management system.

[0115] Working principle: During the internal operation of the thermal management system, when short circuits, overloads, and undervoltage occur inside, after receiving the signal, the processor 8 controls the conversion module 12 to switch the internal circuit path. The circuit path is switched from the damaged circuit to the standby circuit 16 through the switch 13 to keep the internal functions operating normally.

[0116] 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 the infrared rays with wavelengths in the range of 0.75 - 100 µm emitted by the internal equipment through the receiving unit, converts the infrared rays into electrical signals through the receiving unit, and after being processed by the conversion unit, transmits the signals to the processor 8. Based on Faraday's law of electromagnetic induction, the current sensor 19 generates a magnetic field in the winding through the passing current. After the magnetic field passes through the iron core, an induced electromotive force is generated on the secondary winding, and after being processed and converted, the signals are transmitted to the processor 8. Based on the principle of electromagnetic induction, the voltage transformer 20 generates an alternating magnetic flux in the iron core by applying a voltage on the primary winding, and a corresponding proportional induced electromotive force will be generated on the secondary winding, converting the high voltage to a low voltage and transmitting the processed information to the processor 8.

[0117] During the operation of the thermal management system, after a fault occurs inside, when the processor 8 receives the fault information, it controls the release mechanism inside the disconnection component 23 to operate the corresponding type of release mechanism to cut off the circuit. At the same time, it controls the sealing component 22 to seal the inside. The compression spring 26 pushes the moving ring 24 to seal the inside 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. The water pump 35 pumps the water in the water tank 6, and absorbs the internal heat through the water-cooled head to ensure the working temperature of the thermal management system. After a fault occurs, the isolation module 11 cuts off the power supply inside the thermal management system, and at the same time cuts off the cooling and heat dissipation effect of the cooling module 7 on the inside. However, there is still heat inside the thermal management system. The processor 8 controls the temperature reduction component 27 to communicate with the water tank 6 to absorb the heat participating inside;

[0118] 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 an incubator to heat to obtain a paraffin wax solution. Add expanded graphite, graphene aerogel and polyvinyl alcohol-based composite aerosol to the paraffin wax solution, stir well, and wait for the mixture to cool and solidify to obtain the 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 changing from solid state to liquid state after being heated.

[0119] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claims.

Claims

1. A thermal management system based on a toughened composite phase change thermal storage material, characterized in that: 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); 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); 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 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. A phase change module (5) is installed in the middle of the inner wall of the main body (1), and the phase change module (5) comprises: a box body (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: 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).

2. A thermal management system based on a toughened composite phase change heat storage material according to claim 1, characterized in that: 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, characterized in that: 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).

4. A thermal management system based on a toughened composite phase change heat storage material according to claim 1, characterized in that: 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).

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