Thermal management wire rod and manufacturing method thereof, and high explosion motor

Abstract

The invention relates to the field of heat dissipation materials, in particular to a heat management wire rod and a manufacturing method thereof, and a high explosion motor, which comprises a metal foil structural body and a phase change material layer, the metal foil structural body is a rod-shaped structural body formed by winding metal foil, and a cavity formed in the winding process of the metal foil is filled with the phase change material layer. The metal foil is wound to form the coil bar, the coil bar is filled with the phase-change material layer, the contact area between the phase-change material layer and the high-heat-conduction metal foil material is larger, meanwhile, the distance between the phase-change material layer and a heating structure of equipment is shorter, heat can be more rapidly transmitted to the phase-change material layer from a metal conductor when the heating amount is large, and the heat conduction efficiency is improved. When the heating value is small, the heat can be quickly transferred to the metal foil conductor from the phase change material layer and then transferred to other areas of the equipment for heat dissipation, so that the temperature rise suppression response speed when the heating value is large and the heat dissipation rate when the heating value is small can be improved, the heat dissipation effect and the working stability of the equipment are improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of heat dissipation materials, and in particular to a heat management wire rod and a manufacturing method thereof, and a high-explosive motor. Background Art

[0002] With the development of science and technology, various high-power electrical motors are increasingly being used in more fields. As the power of electrical motors increases, how to quickly dissipate the large amount of accompanying heat energy has become the main problem restricting the further development of electrical motors. The following is an explanation using motors as an example.

[0003] A motor is a device that uses a magnetic field to achieve conversion or transfer between electrical energy and mechanical energy. Compared with conventional motors, the transient heat load of high-explosive motors increases significantly. Instantaneous overheating will reduce the reliability of motor insulation and shorten its life. For high-explosive motors, the instantaneous temperature rise caused by the large current impact of the winding is the main factor leading to motor failure. Conventional natural cooling mainly relies on the casing to transfer internal heat to the surrounding environment, and maximizes the heat dissipation rate by configuring the casing fins and motor components (such as vacuum glue filling at the winding end, cast copper rotor, etc.). However, this heat dissipation method is inefficient and has no significant heat dissipation effect on high-explosive motors that heat up rapidly. In addition, an additional cooling system can be introduced to improve the motor performance output and optimize the temperature distribution. The effect is quite significant, but the additional cooling system will also cause the device to occupy a larger space, increase the complexity of the system, and reduce the working stability.

[0004] Therefore, how to provide a solution for rapid heat dissipation of motor and electrical equipment is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide a heat management wire rod and a manufacturing method thereof, and a high explosive motor to solve the problem that the motor and electrical equipment in the prior art cannot quickly dissipate heat.

[0006] In order to solve the above technical problems, the present invention provides a thermal management wire rod, comprising a metal foil structure and a phase change material layer;

[0007] The metal foil structure is a rod-shaped structure formed by winding the metal foil, and the phase change material layer is filled in a cavity formed during the winding process of the metal foil.

[0008] Optionally, in the thermal management bar, the phase change material layer is at least one of a solid-liquid phase change material layer and a solid-solid phase change material layer.

[0009] Optionally, in the thermal management bar, the metal foil structure is wrapped with an insulating layer on the outside.

[0010] A high explosive motor, wherein the winding wire rod of the high explosive motor is any one of the thermal management wire rods described above.

[0011] A method for manufacturing a thermal management wire rod, comprising:

[0012] The metal foil is rolled into a rod-shaped pre-position object, and the edge of the outermost metal foil is sealed and fixed to the side surface of the rod-shaped pre-position object;

[0013] Filling a phase change material layer in the cavity between the metal foils of the rod-shaped precursor;

[0014] The two ends of the rod-shaped front element are sealed to obtain a heat management wire rod.

[0015] Optionally, in the method for manufacturing the thermal management wire rod, the phase change material layer is a solid-liquid phase change material layer;

[0016] The step of filling a phase change material layer in a cavity between the metal foils of the rod-shaped precursor comprises:

[0017] The liquid solid-liquid phase change material layer is filled into the cavity between the metal foils of the rod-shaped precursor by vacuum infusion.

[0018] Optionally, in the manufacturing method of the thermal management wire rod, before filling the liquid solid-liquid phase change material layer into the cavity between the metal foils of the rod-shaped precursor by vacuum infusion, the method further comprises:

[0019] The rod-shaped precursor is pressed into a preset shape in a mold.

[0020] Optionally, in the method for manufacturing the thermal management wire rod, the phase change material layer is a solid-solid phase change material layer;

[0021] From winding the metal foil into a rod-shaped precursor to sealing both ends of the rod-shaped precursor, the process includes:

[0022] The metal foil and the solid-solid phase change material are layered and rolled into a rod-shaped preform;

[0023] The edge of the outermost metal foil of the rod-shaped front member is sealed and fixed to the side surface of the rod-shaped front member.

[0024] Optionally, in the manufacturing method of the thermal management wire rod, after sealing and fixing the edge of the outermost metal foil of the rod-shaped front object to the side surface of the rod-shaped front object, the method further comprises:

[0025] The rod-shaped precursor is pressed into a preset shape in a mold.

[0026] Optionally, in the method for manufacturing the thermal management wire rod, the step of sealing and fixing the edge of the outermost metal foil to the side surface of the rod-shaped front object comprises:

[0027] Fixing the edge of the outermost metal foil to the side surface of the rod-shaped front object by at least one of welding, brazing and gluing;

[0028] and / or

[0029] The sealing of the two ends of the rod-shaped pre-processor comprises:

[0030] The two ends of the rod-shaped pre-processor are sealed by at least one of welding, brazing and gluing.

[0031] The present invention provides a thermal management wire rod, comprising a metal foil structure and a phase change material layer; the metal foil structure is a rod-shaped structure formed by winding the metal foil, and the phase change material layer is filled in a cavity formed during the winding process of the metal foil. The present invention uses metal foil to wind the wire rod, and fills the phase change material layer inside the wire rod. This method makes the contact area between the phase change material layer and the high thermal conductivity metal foil material larger, and at the same time, the distance from the heating structure of the equipment is shorter. When the heat generation is large, the heat can be transferred from the metal conductor to the phase change material layer more quickly. When the heat generation is small, the heat can be quickly transferred from the phase change material layer to the metal foil conductor, and then transferred to other areas of the equipment for heat dissipation. It can achieve the improvement of the temperature rise suppression response speed when the heat generation is large and the heat dissipation rate when the heat generation is small, thereby improving the heat dissipation effect, working stability and service life of the equipment. The present invention also provides a method for manufacturing a thermal management wire rod and a high explosive motor with the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic structural diagram of a specific implementation of the thermal management wire rod provided by the present invention;

[0034] Figure 2 A schematic structural diagram of another specific implementation of the thermal management wire rod provided by the present invention;

[0035] Figure 3 A schematic diagram of the partial structure of a specific implementation of the high explosive motor provided by the present invention;

[0036] Figure 4A schematic diagram of the partial structure of a specific implementation of the high explosive motor provided by the present invention;

[0037] Figure 5 A schematic flow chart of a specific implementation of the method for manufacturing the thermal management wire rod provided by the present invention;

[0038] Figure 6 A schematic flow chart of another specific implementation of the method for manufacturing the thermal management wire rod provided by the present invention;

[0039] Figure 7 A schematic flow chart of another specific implementation of the method for manufacturing the thermal management wire rod provided by the present invention;

[0040] Figure 8 A process flow chart of another specific implementation manner of the method for manufacturing the thermal management wire rod provided by the present invention.

[0041] In the figure, it includes 01-metal foil, 02-phase change material layer, 03-insulating layer, 04-mold, and 05-press. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] The core of the present invention is to provide a thermal management wire rod, a structural schematic diagram of a specific implementation method thereof is shown as follows: Figure 1 to Figure 2 As shown, it is called the specific embodiment 1, including a metal foil 01 structure and a phase change material layer 02;

[0044] The metal foil 01 structure is a rod-shaped structure formed by winding the metal foil 01 , and the phase change material layer 02 is filled in a cavity formed during the winding process of the metal foil 01 .

[0045] The metal foil 01 may be copper foil or aluminum foil, or other metal materials with good thermal conductivity may be selected according to actual needs.

[0046] Specifically, the phase change material layer 02 is at least one of a solid-liquid phase change material layer 02 and a solid-solid phase change material layer 02 .

[0047] The phase change material layer 02 may be a solid-liquid phase change material layer 02 composed of solid-liquid phase change materials such as paraffin or low-temperature molten salt, or a solid-solid phase change material layer 02 composed of solid-solid phase change materials such as memory alloy, polyol, layered perovskite, etc.

[0048] Furthermore, the thickness of the metal foil 01 is preferably 0.05mm-0.1mm, and the interlayer spacing of the metal foil 01, that is, the thickness of the cavity is preferably 0.01mm-0.05mm, the purpose of which is to shorten the heat transfer path from the heat source to the phase change material, increase the contact area between the heat source and the phase change material, and thereby increase the heat conduction rate from the heat source to the phase change material, so that the temperature rise can be effectively suppressed.

[0049] Furthermore, the outer side of the metal foil 01 structure is wrapped with an insulating layer 03. Wrapping the insulating layer 03 can further expand the applicable occasions of the thermal management wire rod, and avoid short circuits between closely arranged thermal management wire rods, which may cause accidents. The insulating layer 03 can be an insulating paint or a polyimide film. The process of setting the insulating layer 03 is simple and the cost is low. Of course, the insulating layer 03 of other materials can also be selected according to actual conditions.

[0050] Furthermore, the phase change temperature of the phase change material layer 02 ranges from 60 degrees Celsius to 200 degrees Celsius, including endpoint values, such as any one of 60.0 degrees Celsius, 123.1 degrees Celsius or 200.0 degrees Celsius. The above range is the conclusion drawn after a large number of theoretical calculations and actual tests, which matches the operating temperature rise range of most motors and electrical appliances. Of course, materials with other phase change temperatures can also be selected as the phase change material layer 02 according to actual conditions.

[0051] The thermal management wire rod is a cylindrical wire rod. Of course, it can also be pressed into a square, oval or other special-shaped wire rod through the mold 04 and the press 05.

[0052] The present invention provides a heat management wire rod, comprising a metal foil 01 structure and a phase change material layer 02; the metal foil 01 structure is a rod-shaped structure formed by winding the metal foil 01, and the phase change material layer 02 is filled in a cavity formed during the winding process of the metal foil 01. The present invention uses metal foil 01 to wind the wire rod, and the phase change material layer 02 is filled inside the wire rod. This method makes the contact area between the phase change material layer 02 and the high thermal conductivity metal foil 01 material larger, and at the same time, the distance with the heating structure of the equipment is shorter. When the heat generation is large, the heat can be transferred more quickly from the metal conductor to the phase change material layer 02. When the heat generation is small, the heat can be quickly transferred from the phase change material layer 02 to the metal foil 01 conductor, and then transferred to other areas of the equipment for heat dissipation. It can achieve the improvement of the temperature rise suppression response speed when the heat generation is large and the heat dissipation rate when the heat generation is small, which also improves the heat dissipation effect, working stability and service life of the equipment.

[0053] The present invention also provides a high explosive motor, a partial structural diagram of a specific implementation method thereof is shown as follows Figure 3 and Figure 4As shown, it is called specific implementation mode 2, and the winding wire rod of the high explosive motor is a thermal management wire rod as described in any one of the above.

[0054] High explosive power motors are required to have instantaneous high overload capabilities. The instantaneous temperature rise of the motor during high overload operation can easily lead to motor failure. Conventional forced cooling will add additional heat dissipation structures to the motor, which will increase additional weight and losses.

[0055] In order for the motor to meet the requirements of high power density and high efficiency performance, and to further have high explosive power, it is urgent to suppress transient large temperature rise and keep the motor running within a safe temperature range. For high explosive power motors, the main source of heat is the motor winding. From the perspective of suppressing the heating and temperature rise of the winding, the present invention proposes a wound motor winding bar with integrated phase change thermal management function.

[0056] When the high-explosive motor is running, especially under high-explosive conditions (such as overload, phase loss, etc.), the phase change material layer 02 first absorbs heat from the winding with the largest temperature rise. Under the action of latent heat, the motor overload time can be extended to ensure that the transient temperature rise of the winding is suppressed, that is, it will not be burned by instantaneous heat accumulation, and the service life is long and the stable performance is good.

[0057] The following are specific examples of the winding bar of the high explosive motor, wherein the first embodiment is a motor winding with a racetrack winding, such as Figure 3 As shown, it can be used in concentrated winding, linear motor and other high explosive motor applications. The thermal management wire rod of the present invention is wound in a runway shape to obtain a runway-shaped wound motor winding, and finally the winding is inserted into the motor slot for installation.

[0058] Embodiment 2 is a flat wire winding after bending, such as Figure 4 As shown, it can be used in distributed winding high-explosive motor applications. Common bending methods include Hair-pin, I-pin, etc. After the thermal management wire rod described in the present invention is bent according to the winding end structure, a bent flat wire rod can be obtained, and finally it is inserted into the motor slot and the other end is twisted and welded to form a complete motor winding.

[0059] The present invention uses the latent heat of phase change to suppress the temperature rise of the winding, without the need for a complex and bulky forced circulation heat dissipation system, and can effectively suppress the instantaneous temperature rise of the high-explosive motor and avoid overheating and damage to the motor. The phase change material is directly filled inside the winding, which is closer to the main heat source of the high-explosive motor and has a smaller thermal resistance, thus avoiding the adverse effect of the motor's steady-state thermal performance degradation caused by the poor thermal conductivity of existing phase change materials.

[0060] Phase change materials can continuously absorb heat and maintain a stable temperature during the phase transition process, so they can be used to suppress transient temperature rise of equipment. Thermal management technology based on latent heat of phase change often does not require forced circulation pumps, and has a strong ability to suppress temperature rise. However, this type of technology still has several defects. First, the positions where phase change materials are filled in motors are generally set in the casing, the stator yoke of the motor, and the periphery or bottom area of ​​the stator slot. There is a large thermal resistance between the phase change material and the main heat source of the motor. At the same time, the contact area between the phase change material and the outside world is small, which makes it difficult to transfer heat; secondly, the solid-liquid phase change materials suitable for thermal management temperature zones mainly include paraffin, low-temperature molten salt, etc., and the applicable solid-solid phase change materials mainly include memory alloys, layered perovskites, etc. These materials generally have low thermal conductivity and cannot be released in time after absorbing heat. Large-area filling in positions such as the motor casing and stator yoke often leads to a significant decrease in the steady-state thermal performance of the motor. In the present invention, the phase change material is directly set inside the winding coil, so that the above-mentioned shortcomings are greatly solved.

[0061] The high explosive motor provided by the present invention comprises the thermal management wire rod, and the thermal management wire rod comprises a metal foil 01 structure and a phase change material layer 02; the metal foil 01 structure is a rod-shaped structure formed by winding the metal foil 01, and the phase change material layer 02 is filled in the cavity formed during the winding process of the metal foil 01. The present invention uses the metal foil 01 to wind the wire rod, and the phase change material layer 02 is filled inside the wire rod. This method makes the contact area between the phase change material layer 02 and the high thermal conductivity metal foil 01 material larger, and at the same time, the distance with the heating structure of the equipment is shorter. When the heat generation is large, the heat can be transferred more quickly from the metal conductor to the phase change material layer 02. When the heat generation is small, the heat can be quickly transferred from the phase change material layer 02 to the metal foil 01 conductor, and then transferred to other areas of the equipment for heat dissipation, which can achieve the improvement of the temperature rise suppression response speed when the heat generation is large and the heat dissipation rate when the heat generation is small, thereby improving the heat dissipation effect, working stability and service life of the equipment.

[0062] The present invention also provides a method for manufacturing a thermal management wire rod, a flow chart of a specific implementation method thereof is as follows: Figure 5 As shown, it is called specific implementation mode five, including:

[0063] S101: winding a metal foil into a rod-shaped pre-position object, and then sealing and fixing the edge of the outermost metal foil to the side surface of the rod-shaped pre-position object.

[0064] The side surface of the rod-shaped pre-processing object refers to the side surface of the wound rod-shaped pre-processing object excluding the two end surfaces.

[0065] S102: Filling a phase change material layer into the cavity between the metal foils of the rod-shaped precursor.

[0066] The phase change material layer can be a solid-solid phase change material layer or a solid-liquid phase change material layer. Obviously, the material layer involving the liquid phase needs the cavity to be formed first before it can be filled in, while the material layer that does not involve the liquid phase and is solid in the entire process can also be wound together with the metal foil in the form of a foil to ensure that the solid-solid phase change material layer is in close contact with the metal foil and conducts heat smoothly. The specific filling methods of the two phase change material layers can be seen below.

[0067] S103: Seal both ends of the rod-shaped front object to obtain a thermal management wire rod.

[0068] Specifically, in this specific implementation, the metal foil is a metal foil cut according to a target length of the thermal management wire rod.

[0069] The step of sealing and fixing the edge of the outermost metal foil to the side surface of the rod-shaped front object comprises:

[0070] Fixing the edge of the outermost metal foil to the side surface of the rod-shaped front object by at least one of welding, brazing and gluing;

[0071] and / or

[0072] The sealing of the two ends of the rod-shaped pre-processor comprises:

[0073] The two ends of the rod-shaped pre-processor are sealed by at least one of welding, brazing and gluing.

[0074] The sealing and fixing of the edge of the outermost metal foil to the side surface of the rod-shaped front object means sealing the side of the metal foil, changing the "rolled metal foil" into a "metal tube with open ends including an internal structure", that is, from Figure 8 The open foil roll in the Figure 2 Metal pipe in.

[0075] After the two ends of the rod-shaped front element are sealed, the thermal management wire rod will become a fully enclosed structure, and the phase change material layer will be sealed inside the wound metal foil to avoid contact with the outside world to interfere with the operation of the equipment.

[0076] In this specific embodiment, the metal foil is sealed by at least one of welding, brazing and gluing. The above three methods are firm in sealing and easy to operate. Of course, the rod-shaped precursor can also be sealed by other methods.

[0077] The present invention provides a method for manufacturing a heat management wire rod, which comprises the following steps: winding a metal foil into a rod-shaped pre-position, and then sealing and fixing the edge of the outermost metal foil to the side surface of the rod-shaped pre-position; filling a phase change material layer in the cavity between the metal foils of the rod-shaped pre-position; and sealing the two ends of the rod-shaped pre-position to obtain a heat management wire rod. The present invention uses metal foil to wind a wire rod, and fills the wire rod with a phase change material layer. This method makes the contact area between the phase change material layer and the high thermal conductivity metal foil material larger, and at the same time, the distance to the heating structure of the device is shorter. When the heat generation is large, the heat can be transferred more quickly from the metal conductor to the phase change material layer. When the heat generation is small, the heat can be quickly transferred from the phase change material layer to the metal foil conductor, and then transferred to other areas of the device for heat dissipation. This can achieve the improvement of the temperature rise suppression response speed when the heat generation is large and the heat dissipation rate when the heat generation is small, thereby improving the heat dissipation effect, working stability and service life of the device.

[0078] As another specific implementation, when the phase change material layer is a solid-liquid phase change material layer, a specific implementation fourth is obtained, and its flow diagram is as follows: Figure 6 As shown, including:

[0079] S201: Winding the metal foil into a rod-shaped pre-object, and then sealing and fixing the edge of the outermost metal foil to the side surface of the rod-shaped pre-object.

[0080] S202: Filling a liquid solid-liquid phase change material layer into the cavity between the metal foils of the rod-shaped precursor by vacuum infusion.

[0081] The vacuum infusion refers to converting the solid-liquid phase change material into liquid in a high temperature environment, evacuating the interlayer cavity of the metal foil, allowing the liquid solid-liquid phase change material to be naturally drawn into the cavity, and then cooling it down to solidify it, thereby completing the filling of the solid-liquid phase change layer.

[0082] Preferably, before this step, the method further comprises:

[0083] The rod-shaped precursor is pressed into a preset shape in a mold.

[0084] Since the solid-liquid phase change material layer is drawn into the chamber in a liquid state, the rod-shaped pre-object is first pressed into a preset shape by a mold and then vacuum infused, which can improve the yield rate of the finished product.

[0085] The metal foil layers inside the rod-shaped front object obtained after pressing down are arranged with equal distances between the layers.

[0086] S203: Seal both ends of the rod-shaped front object to obtain a thermal management wire rod.

[0087] The present specific implementation is different from the above specific implementation in that the present specific implementation defines the phase change material layer as a solid-liquid phase change material layer, and the remaining steps are the same as those in the above specific implementation, which will not be described again.

[0088] This specific implementation method designs a special filling process of the solid-liquid phase change material layer according to the characteristics of the solid-liquid phase change material. The vacuum infusion method can ensure that the solid-liquid phase change material layer fully fills the chamber, ensuring that the phase change material and the metal foil are in full and close contact, thereby increasing the thermal conductivity efficiency.

[0089] As a specific implementation, when the phase change material layer is a solid-solid phase change material layer, a specific implementation fourth is obtained, and its flow diagram is as follows: Figure 7 As shown, including:

[0090] S301: stacking metal foil and solid-solid phase change material layers and winding them into a rod-shaped precursor.

[0091] Of course, since the solid-solid phase change material layer needs to be rolled up inside the metal foil, when laying the material layer, the solid-solid phase change material layer needs to be laid on top of the metal foil.

[0092] S302: Sealing and fixing the edge of the outermost metal foil of the rod-shaped front object to the side surface of the rod-shaped front object.

[0093] Preferably, after the edge of the outermost metal foil of the rod-shaped pre-processing object is sealed and fixed to the side surface of the rod-shaped pre-processing object, the method further comprises:

[0094] The rod-shaped precursor is pressed into a preset shape in a mold.

[0095] During the pressing process, in addition to changing the shape of the rod-shaped precursor, the bonding tightness between the metal foil and the solid-solid phase change material layer can be further improved, thereby improving the thermal conductivity efficiency.

[0096] S303: Seal both ends of the rod-shaped front object to obtain a thermal management wire rod.

[0097] The present specific implementation is different from the above specific implementation in that the present specific implementation defines the phase change material layer as a solid-solid phase change material layer, and the remaining steps are the same as those in the above specific implementation, which will not be described again.

[0098] In this specific implementation manner, by combining the solid-solid phase change material layer with the metal foil during the winding stage, the thermal conductivity between the solid-solid phase change material layer and the metal foil is further improved.

[0099] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0100] It should be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0101] The above is a detailed introduction to the thermal management wire rod and its manufacturing method, and a high explosive motor provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A thermal management wire rod, characterized in that: It includes a metal foil structure and a phase change material layer; The metal foil structure is a rod-shaped structure formed by winding the metal foil, and the phase change material layer is filled in a cavity formed during the winding process of the metal foil.

2. The thermal management wire rod according to claim 1, characterized in that: The phase change material layer is at least one of a solid-liquid phase change material layer and a solid-solid phase change material layer.

3. The thermal management wire rod according to claim 1, characterized in that: The metal foil structure is wrapped with an insulating layer on the outside.

4. A high explosive motor, characterized in that: The winding bar of the high explosive motor is a thermal management bar as described in any one of claims 1 to 3.

5. A method for manufacturing a thermal management wire rod, characterized in that: include: The metal foil is rolled into a rod-shaped pre-position object, and the edge of the outermost metal foil is sealed and fixed to the side surface of the rod-shaped pre-position object; Filling a phase change material layer in the cavity between the metal foils of the rod-shaped precursor; The two ends of the rod-shaped front element are sealed to obtain a heat management wire rod.

6. The method for manufacturing a thermal management wire rod according to claim 5, characterized in that: The phase change material layer is a solid-liquid phase change material layer; The step of filling a phase change material layer in a cavity between the metal foils of the rod-shaped precursor comprises: The liquid solid-liquid phase change material layer is filled into the cavity between the metal foils of the rod-shaped precursor by vacuum infusion.

7. The method for manufacturing a thermal management wire rod according to claim 6, characterized in that: Before filling the liquid solid-liquid phase change material layer into the cavity between the metal foils of the rod-shaped precursor by vacuum infusion, the method further comprises: The rod-shaped precursor is pressed into a preset shape in a mold.

8. The method for manufacturing a thermal management wire rod according to claim 5, characterized in that: The phase change material layer is a solid-solid phase change material layer; From winding the metal foil into a rod-shaped precursor to sealing both ends of the rod-shaped precursor, the process includes: The metal foil and the solid-solid phase change material are layered and rolled into a rod-shaped preform; The edge of the outermost metal foil of the rod-shaped front member is sealed and fixed to the side surface of the rod-shaped front member.

9. The method for manufacturing a thermal management wire rod according to claim 8, characterized in that: After the edge of the outermost metal foil of the rod-shaped pre-processing object is sealed and fixed to the side surface of the rod-shaped pre-processing object, the method further includes: The rod-shaped precursor is pressed into a preset shape in a mold.

10. The method for manufacturing a thermal management wire rod according to claim 5, characterized in that: The step of sealing and fixing the edge of the outermost metal foil to the side surface of the rod-shaped front object comprises: Fixing the edge of the outermost metal foil to the side surface of the rod-shaped front object by at least one of welding, brazing and gluing; and / or The sealing of the two ends of the rod-shaped pre-processor comprises: The two ends of the rod-shaped pre-processor are sealed by at least one of welding, brazing and gluing.

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