Phase change heat management packaging structure and heat management motor

Abstract

The invention relates to the field of heat dissipation materials, in particular to a phase change heat management packaging structure and a heat management motor, which comprise a packaging shell, an elastic element and a sealing gasket, the sealing gasket and the packaging shell form a packaging cavity, and the outer surface of the sealing gasket is connected with the elastic element; the packaging cavity is filled with a phase change heat management material; and when the heat release volume of the phase change heat management material is reduced, the elastic element in the compressed state continuously applies pressure to the phase change heat management material through the sealing gasket. According to the invention, an additional accommodating space is provided, and in the material solidification process, continuous pressure for uniformly recovering the phase change heat management material to a filling original state is also provided through the elastic element; potential safety hazards in work such as local stress concentration caused by phase change thermal expansion of the phase change thermal management material in the equipment and appearance of unrestrained local heat source points in the equipment can be effectively solved, the working stability of the equipment is greatly 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 phase change thermal management packaging structure and a thermal management 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 is greatly increased. Transient overheating will reduce the reliability of the motor insulation and shorten its life. The heat absorption technology using phase change thermal management materials that has emerged in recent years is a very effective motor cooling technology. This is because the phase change thermal management material can continuously absorb heat and maintain a stable temperature during the phase transition process. Therefore, it can be used to suppress the transient temperature rise of the motor. Compared with traditional cooling methods such as air cooling and liquid cooling, the heat absorption technology of phase change thermal management materials does not require the introduction of additional cooling systems, does not increase the weight and size of the motor, and has no additional energy loss, so it is very suitable for high-explosive motors.

[0004] However, the current heat absorption technology of phase change thermal management materials still has certain defects. First, when the phase change thermal management material absorbs heat and melts, it generates internal mechanical stress. These stresses will cause expected external friction between different mechanical components, causing additional losses. In order to avoid stress caused by the volume expansion of the liquefied phase change thermal management material, the existing technology usually adopts a method of less encapsulation of the phase change thermal management material and reserving some space. However, this has caused new problems. That is, the non-uniformity of the liquid phase change thermal management material during the re-solidification process leads to the appearance of vacuum areas, resulting in negative pressure affecting the structural stability. At the same time, it will cause local hot spots in some areas that are not in contact with the phase change thermal management material, seriously affecting the service life and working stability of the equipment.

[0005] Therefore, how to improve the working stability and service life of equipment after phase change thermal management materials are applied to heat absorption technology is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0006] The purpose of the present invention is to provide a phase change thermal management packaging structure and a thermal management motor to solve the problem in the prior art that the phase change thermal management packaging structure causes a decrease in the working stability and service life of the equipment.

[0007] In order to solve the above technical problems, the present invention provides a phase change thermal management packaging structure, including a packaging shell, an elastic element and a sealing gasket;

[0008] The sealing gasket and the packaging shell form a packaging chamber, and the outer surface of the sealing gasket is connected to the elastic element;

[0009] The packaging cavity is filled with phase change thermal management material;

[0010] When the heat release volume of the phase-change heat management material decreases, the elastic element in a compressed state continuously applies pressure to the phase-change heat management material through the sealing gasket.

[0011] Optionally, in the phase change thermal management packaging structure, the sealing gasket includes a rigid bottom sheet and a sealing rubber ring in sequence from the outside to the inside of the packaging cavity;

[0012] The sealing rubber ring cooperates with the packaging shell and the rigid bottom film to fill the gap between the packaging shell and the rigid bottom film;

[0013] The outer side of the sealing gasket is connected to the elastic element.

[0014] Optionally, in the phase change thermal management packaging structure, the sealing rubber ring includes at least one of a fluorinated rubber ring, a nitrile rubber ring or a butyl rubber ring.

[0015] Optionally, in the phase change thermal management packaging structure, the elastic element is at least one of a leaf spring and a spring.

[0016] Optionally, in the phase change thermal management packaging structure, the leaf spring is at least one of a spiral leaf spring and a wave leaf spring.

[0017] Optionally, in the phase change thermal management packaging structure, the thickness of the leaf spring ranges from 1 mm to 3 mm, including the endpoint values.

[0018] Optionally, in the phase change thermal management packaging structure, the phase change thermal management material is a solid-liquid phase change thermal management material.

[0019] Optionally, in the phase-change thermal management packaging structure, the elastic element is always in a compressed state in the phase-change thermal management packaging structure.

[0020] A thermal management motor comprises any one of the phase change thermal management packaging structures described above.

[0021] Optionally, in the thermal management motor, the phase change thermal management packaging structure is arranged at at least one of a motor end cover, a housing, a stator yoke and a stator end of the thermal management motor.

[0022] The phase change thermal management packaging structure provided by the present invention includes a packaging shell, an elastic element and a sealing gasket; the sealing gasket and the packaging shell form a packaging chamber, and the outer surface of the sealing gasket is connected to the elastic element; the packaging chamber is filled with phase change thermal management material; when the heat release volume of the phase change thermal management material decreases, the elastic element in a compressed state continuously applies pressure to the phase change thermal management material through the sealing gasket. The present invention provides additional accommodation space for the phase change thermal management material when it melts and expands through the elastic element, and also applies continuous pressure to the phase change thermal management material to uniformly restore to its original filling state through the elastic element during the solidification process of the material, which can effectively solve the safety hazards in the operation of the phase change thermal management material in the equipment due to the phase change thermal expansion, the occurrence of unsuppressed local heat source points in the equipment, etc., greatly improving the working stability of the equipment and extending the service life of the equipment. The present invention also provides a thermal management motor with the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 A schematic structural diagram of a specific implementation of the phase change thermal management packaging structure provided by the present invention;

[0025] Figure 2 A schematic diagram of a partial structure of another specific implementation of the phase change thermal management packaging structure provided by the present invention;

[0026] Figures 3 to 8 A schematic diagram of the partial structure of a specific implementation of the thermal management motor provided by the present invention.

[0027] In the figure, it includes 10-sealing gasket, 20-elastic element, 30-motor end cover, 40-potting material, 50-phase change thermal management material, 60-winding outlet terminal, 70-motor housing, 80-packaging shell, 11-sealing rubber ring, 12-rigid bottom film, 21-annular base part, and 22-elastic part. DETAILED DESCRIPTION

[0028] The current heat absorption technology of phase change thermal management materials still has several defects. Taking the motor as an example, first, the phase change thermal management material generates internal mechanical stress when absorbing heat and melting. These stresses may cause the gap between the stator and the rotor of the motor to deform or generate greater friction. At the same time, filling different types of phase change thermal management materials will generate different thermal stresses due to different thermal expansion coefficients. The mechanical stress and thermal stress cause their volume to expand, driving the potting material to expand together, which may hinder the air flow inside the motor, resulting in uneven temperature distribution inside the motor, thereby reducing the heat transfer efficiency of the motor. The filled phase change thermal management material may also cause short circuits between conductors or improper contact with insulating materials when it expands due to heat, causing motor failure or failure; secondly, there are very few models and numerical studies on the heat transfer performance of phase change thermal management materials due to cooling shrinkage gaps. Usually, 80% of the filling area is filled with phase change thermal management materials, so that there is still 20% of the void space to accommodate its thermal expansion during the phase change of the phase change thermal management material from solid to liquid. However, this type of method will lead to non-uniformity during the melting and solidification of the phase change thermal management material due to the limiting factors of external forces such as the packaging container wall, gravity, or the irregular movement of the melting and solidification interface caused by heat convection during the phase change process, such as the appearance of bubbles, cracks or deformation. A vacuum area is often formed during the solidification process. On the one hand, additional negative pressure is formed to compress the phase change thermal management material and the potting material. On the other hand, some heat sources lose their phase change energy storage, resulting in new local hot spots, leaving the hidden danger of local accumulation and burning of the motor. The thickness of the phase change thermal management material acting on some heat sources increases, the heat transfer path is extended, the thermal resistance is increased, and the thermal steady-state performance is deteriorated. In addition, the melting / solidification characteristics of the phase change thermal management material are often very suitable for motors with S2-S8 working modes. For frequent overload conditions, the multiple cycle utilization of the phase change thermal management material is crucial, and the changes in the thermal expansion coefficient caused by thermal expansion / contraction and the lack of a suitable container will reduce the thermal management performance inside the motor, affect the motor cycle cooling, and shorten the service life of the motor.

[0029] 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.

[0030] The core of the present invention is to provide a phase change thermal management packaging structure, a structural schematic diagram of a specific implementation method thereof is shown in FIG. Figure 1 As shown, it is called the specific embodiment 1, which includes a packaging shell 80, an elastic element 20 and a sealing gasket 10;

[0031] The sealing gasket 10 and the packaging shell 80 form a packaging chamber, and the outer surface of the sealing gasket 10 is connected to the elastic element 20;

[0032] The packaging cavity is filled with phase change thermal management material 50;

[0033] When the heat release volume of the phase-change heat management material 50 decreases, the elastic element 20 in a compressed state continuously applies pressure to the phase-change heat management material 50 through the sealing gasket 10 .

[0034] Of course, the material type and shape of the sealing gasket 10 and the elastic element 20 are determined according to the filling form, geometric dimensions and type of the potting material 40 (if it is a motor) of the phase change thermal management material 50 filled in the device.

[0035] As a preferred embodiment, the sealing gasket 10 includes a rigid bottom sheet 12 and a sealing rubber ring 11 in sequence from the outside to the inside of the packaging cavity;

[0036] The sealing rubber ring 11 cooperates with the packaging shell 80 and the rigid bottom film 12 to fill the gap between the packaging shell 80 and the rigid bottom film 12;

[0037] The outer side of the sealing gasket 10 is connected to the elastic element 20 .

[0038] The elastic element 20 should have good plasticity, sufficient elastic properties and high elastic limit, tensile strength and fatigue strength, be less affected by time and temperature, have low hysteresis, stress relaxation and creep, and have good corrosion resistance stability. It can undergo elastic deformation along with the sealing gasket 10, but return to its original shape when the force disappears. It has a simple structure and can be set on the end cover, casing or any outer layer position corresponding to the phase change thermal management material 50 filled with the motor.

[0039] The purpose of the elastic element 20 is to absorb the mechanical stress and thermal stress caused by the melting process of the phase change thermal management material 50 and store them as mechanical energy. During this period, it also plays a certain buffering role. When the phase change thermal management material 50 solidifies, it gradually recovers elastic deformation, releases mechanical energy, and drives the phase change thermal management material 50 to gradually restore the original filling state, thereby increasing the recycling capacity of the phase change thermal management material 50 and compensating for the adverse factors caused by the defects in physical properties of the sealing gasket 10 alone. Please refer to Figure 2 , Figure 2 It is a schematic diagram of the three-dimensional structure of the elastic element 20 and the sealing gasket 10 in one case.

[0040] The sealing rubber ring 11 has a better sealing effect, preventing fluids, gases, dust and other substances from leaking or entering the interior of the motor, and has a certain ductility to adapt to more packaging chambers of different shapes. At the same time, by using the rigid bottom film 12 in conjunction with the sealing rubber ring 11, the pressure applied by the elastic element 20 can be evenly distributed on the sealing rubber ring 11, so that the phase change thermal management material 50 solidifies more evenly, further reducing potential stress and cavitation, and improving the working stability of the equipment.

[0041] Of course, if the elastic element 20 itself can seal the packaging chamber, the sealing gasket 10 can directly use a sealing rubber ring 11 or a sealing rubber sheet alone, as described below. Figure 3 .

[0042] The rigid bottom sheet 12 may be a metal sheet, and the sealing rubber ring 11 and the rigid bottom sheet 12 may be bonded together by glue.

[0043] Furthermore, the sealing rubber ring 11 includes at least one of a fluorinated rubber ring, a nitrile rubber ring or a butyl rubber ring. The above-mentioned various sealing rubber rings 11 have good ductility, good elasticity, and stable chemical properties at high temperatures, and can support long-term contact with the phase change thermal management material 50 at high temperatures to improve the service life of the equipment. Of course, rubber rings of other materials can also be selected according to actual conditions, and the present invention is not limited here.

[0044] In addition, the elastic element 20 is at least one of a leaf spring and a spring. The leaf spring occupies less space and can be applied to more application scenarios, meeting the equipment's stringent space volume requirements for the phase change thermal management packaging structure, while the spring can provide more deformation, that is, it can support a larger deformation volume change of the phase change thermal management material 50, and can be applied to more phase change thermal management materials 50. Of course, other elastic elements 20 besides leaf springs and springs can also be selected according to actual conditions, and the present invention is not limited here.

[0045] Furthermore, the leaf spring is at least one of a helical leaf spring and a wave leaf spring; the helical leaf spring has a higher elastic modulus and tensile strength; the wave leaf spring has a higher deformation capacity and smaller stiffness, and can be selected according to actual conditions.

[0046] Furthermore, the thickness of the leaf spring ranges from 1 mm to 3 mm, including endpoint values, such as any one of 1.0 mm, 2.8 mm or 3.0 mm. The above range is the best range obtained after a large number of theoretical calculations and actual tests. Within the above thickness range, the leaf spring can provide sufficient elastic force and will not occupy too much space due to excessive thickness. Of course, it can also be adjusted to other thicknesses according to actual conditions. The specific thickness depends on the required bending stiffness and load capacity. When the load is too large, several single leaf springs can be overlapped to form a laminated leaf spring.

[0047] As a specific implementation, the phase change heat management material 50 is a solid-liquid phase change heat management material 50. Under the continuous pressure of the elastic element 20, the solid-liquid phase change heat management material 50 can be in closer contact with the inner wall of the packaging chamber, whether in the liquid phase or the solid phase. Of course, other types of phase change heat management materials 50, such as solid-solid phase change heat management materials 50, can also be selected according to actual conditions, and the present invention is not limited here.

[0048] If the device using the phase change thermal management packaging structure is a motor, the potting material 40 of the motor may be epoxy resin, silicone elastomer or polyurethane.

[0049] The elastic element 20 is easy to assemble and can be directly matched inside the motor end cover 30 or slotted and fixed outside the end cover. It does not require a complex mechanical system and avoids the more cumbersome shape design and theoretical research of the closed chamber for thermal expansion of the phase change thermal management material 50.

[0050] The physical properties of the elastic element 20 can effectively suppress the negative pressure caused by the vacuum area formed after the phase change thermal management material 50 solidifies, so that the phase change thermal management material 50 can be evenly restored to its original state during the solidification process, and the same is true after the next melting / solidification process, thereby realizing cyclic cooling of the motor.

[0051] The phase-change thermal management packaging structure provided by the present invention comprises a packaging shell 80, an elastic element 20 and a sealing gasket 10; the sealing gasket 10 and the packaging shell 80 form a packaging chamber, the outer surface of the sealing gasket 10 is connected to the elastic element 20; the packaging chamber is filled with a phase-change thermal management material 50; when the heat release volume of the phase-change thermal management material 50 decreases, the elastic element 20 in a compressed state continuously applies pressure to the phase-change thermal management material 50 through the sealing gasket 10. The present invention provides additional accommodation space for the phase-change thermal management material 50 when it melts and expands through the elastic element 20, and also applies continuous pressure to the phase-change thermal management material 50 to uniformly restore to its original filling state through the elastic element 20 during the solidification process of the material, which can effectively solve the safety hazards in the work such as local stress concentration caused by the phase-change thermal expansion of the phase-change thermal management material 50 in the equipment and the occurrence of unsuppressed local heat source points in the equipment, greatly improving the working stability of the equipment and extending the service life of the equipment.

[0052] On the basis of the first embodiment, the elastic element 20 is further defined to obtain a second embodiment, the structural diagram of which is the same as the above embodiment, including a packaging shell 80, an elastic element 20 and a sealing gasket 10;

[0053] The sealing gasket 10 and the packaging shell 80 form a packaging chamber, and the outer surface of the sealing gasket 10 is connected to the elastic element 20;

[0054] The packaging cavity is filled with phase change thermal management material 50;

[0055] When the heat release volume of the phase-change thermal management material 50 decreases, the elastic element 20 in a compressed state continuously applies pressure to the phase-change thermal management material 50 through the sealing gasket 10;

[0056] The elastic element 20 is always in a compressed state in the phase change thermal management packaging structure.

[0057] The difference between this specific embodiment and the above specific embodiment is that the elastic state of the elastic element 20 is limited in this specific embodiment, and the remaining structures are the same as those in the above specific embodiment, which will not be elaborated here.

[0058] In this specific embodiment, it is specified that the elastic element 20 is always in a compressed state. Taking the solid-liquid phase change thermal management material 50 filled in the packaging chamber as an example, usually the volume of the material increases during the process of transformation from solid phase to liquid phase. In this specific embodiment, even when the solid-liquid phase change thermal management material 50 is in a solid phase, the elastic element 20 still applies pressure to the solid-phase solid-liquid phase change thermal management material 50, thereby ensuring that during the entire process of melting or solidifying the solid-liquid phase change thermal management material 50, the elastic element 20 can apply a large pressure to the solid-liquid phase change thermal management material 50, ensuring that the phase change thermal management material 50 is always in a compressed state and fully contacts the inner wall of the packaging chamber, thereby avoiding local hot spots or local stress concentration caused by uneven heating, and improving the working stability and service life of the equipment.

[0059] The present invention also provides a thermal management motor, a structural schematic diagram of a specific implementation method thereof is shown as follows: Figures 3 to 7 As shown, the thermal management motor includes a phase change thermal management packaging structure as described in any one of the above.

[0060] As a specific implementation, the phase change thermal management packaging structure is disposed at at least one of the motor end cover 30 , the housing, the stator yoke and the stator end of the thermal management motor.

[0061] The above-mentioned positions are locations where heat conduction is faster and they are closer to the heat source. Of course, other locations may be selected to set the phase change thermal management packaging structure according to actual conditions.

[0062] Taking the stator end as an example, the phase change thermal management packaging structure is set at the stator end, then the phase change thermal management material 50 is filled in the stator end, the outer layer is potted with epoxy resin, the sealing gasket 10 is tightly fitted with the epoxy resin axially, and is interference fit with the motor housing 70. The motor end cover 30 is slotted and an elastic element 20 of a corresponding shape is installed to bear the axial load; in another case, the phase change thermal management material 50 is filled in a housing with a slot, and is potted with epoxy resin, the sealing gasket 10 of a corresponding shape is tightly fitted with the epoxy resin axially, and a corresponding elastic element 20 can also be set on the motor end cover 30 to bear the axial load.

[0063] In order to meet the requirements of efficient recycling of phase change thermal management materials 50 and ensure stable operation of motor cycle conditions, the motor needs to further have efficient recycling of phase change thermal management materials 50. It is urgent to have a certain space to accommodate phase change thermal expansion, absorb the mechanical stress and thermal stress caused by phase change, ensure the stability of the internal structure of the motor, and provide the ability to restore the phase change thermal management material 50 to its original state when solidified, so that the motor can operate within a safe temperature range. For this motor that uses phase change thermal management material 50 cooling technology, the present invention proposes a structure composed of a sealing gasket 10 and an elastic element 20 for encapsulating phase change thermal management materials 50 in the motor from the perspective of absorbing phase change thermal expansion and recycling phase change thermal management materials 50. The sealing gasket 10, as the first layer of buffer zone, can withstand a certain axial load, fits tightly with the motor potting material 40 and also plays a packaging role, and has good air permeability resistance and resistance to various chemical media and electrical insulation.

[0064] The elastic element 20 and the sealing gasket 10 are firmly matched, have good plasticity, sufficient elastic properties and high elastic limit, tensile strength and fatigue strength, are less affected by time and temperature, have low hysteresis, stress relaxation and creep, and have good corrosion resistance stability.

[0065] Embodiment 1 is a motor in which the present invention is applied to a stator end encapsulated with a phase change thermal management material 50, such as Figure 3 As shown, the phase change heat management material 50 is filled in an annular manner at the winding outlet 60, and the outer layer is encapsulated with epoxy resin, and a sealing rubber ring 11 is matched between the epoxy resin and the motor end cover 30. Figure 4 As shown, a circular leaf spring is fixed on the motor end cover 30 by slotting, and a leaf spring can also be installed inside the end cover. When the phase change thermal management material 50 undergoes phase change thermal expansion, the sealing rubber sheet and the leaf spring bear the axial load, deform and store mechanical energy. When the phase change thermal management material 50 cools and solidifies, the structure releases the mechanical energy, exerts a force in the opposite direction, and drives the phase change thermal management material 50 to gradually restore the original filling state. The present invention can still be applied to other embodiments, such as Figure 5 As shown, the phase change thermal management material 50 is encapsulated in the slot of the motor stator yoke. Similar to the first embodiment, an annular sealing rubber ring 11 can be added to the corresponding stator yoke along the axial direction of the motor, and a leaf spring can be fastened inside or outside the motor end cover 30; Figure 6 As shown, the phase change thermal management material 50 is encapsulated in the slot of the motor housing 70 . Similarly, a sealing rubber sheet can be added along the axial direction and a leaf spring can be fastened inside or outside the motor end cover 30 .

[0066] The second embodiment of the present invention is applied to a motor in which a phase change thermal management material 50 is packaged in a slotted manner inside a casing. Figure 7As shown, the phase change thermal management material 50 is encapsulated in a motor housing 70 with slots, and a sealing rubber ring 11 and a rigid base plate 12 are provided at its end. The rigid base plate 12 is connected to the motor end cover 30 through a spring. When the phase change thermal management material 50 undergoes phase change thermal expansion, the sealing rubber ring 11 and the spring bear the axial load, deform and store mechanical energy. When the phase change thermal management material 50 cools and solidifies, the structure releases the mechanical energy, applies a force in the opposite direction, and drives the phase change thermal management material 50 to gradually restore its original filling state.

[0067] Embodiment 3 is a structural schematic diagram of another specific implementation of the present invention, and the corresponding structural schematic diagram is as follows Figure 8 As shown, it can be seen that in Figure 8 In the figure, the elastic element 20 is a leaf spring, which is divided into an annular base portion 21 that cooperates with the end cover and the sealing gasket 10, and a tilted elastic portion 22 (of course, it should be tilted in the direction of the sealing gasket 10). The annular base portion 21 cooperates with the end cover portion to limit the elastic portion 22, so that when the solid-liquid phase change thermal management material 50 melts and expands, the elastic portion 22 can provide deformation stress to inhibit the outward expansion of the sealing gasket 10.

[0068] When the motor is running, especially under high-explosion conditions (such as overload, phase loss, etc.), the solid-liquid phase change thermal management material 50 melts and expands. The present invention provides elastic space for its volume expansion. When the internal heat convection of the phase change thermal management material 50 is accelerated, that is, the mechanical stress and thermal stress continue to increase, this part of mechanical energy is absorbed and stored to protect the stability of the internal structure of the motor. When the motor is unloaded, the solid-liquid phase change thermal management material 50 begins to solidify. The present invention releases mechanical energy and gives a rebound force, driving the liquid phase change thermal management material 50 to gradually solidify and return to the original filling state, ensuring the stable operation of the motor and the sustainable use of the cooling system.

[0069] 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.

[0070] 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.

[0071] The above is a detailed introduction to the phase change thermal management packaging structure and thermal management 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 phase change thermal management packaging structure, characterized in that: It includes a packaging shell, an elastic element and a sealing gasket; The sealing gasket and the packaging shell form a packaging chamber, and the outer surface of the sealing gasket is connected to the elastic element; The packaging cavity is filled with phase change thermal management material; When the heat release volume of the phase-change heat management material decreases, the elastic element in a compressed state continuously applies pressure to the phase-change heat management material through the sealing gasket.

2. The phase change thermal management packaging structure according to claim 1, characterized in that: The sealing gasket includes a rigid bottom sheet and a sealing rubber ring from the outside to the inside of the packaging cavity; The sealing rubber ring cooperates with the packaging shell and the rigid bottom film to fill the gap between the packaging shell and the rigid bottom film; The outer side of the sealing gasket is connected to the elastic element.

3. The phase change thermal management packaging structure according to claim 2, characterized in that: The sealing rubber ring includes at least one of a fluorinated rubber ring, a nitrile rubber ring or a butyl rubber ring.

4. The phase change thermal management packaging structure according to claim 1, characterized in that: The elastic element is at least one of a leaf spring and a spring.

5. The phase change thermal management packaging structure according to claim 4, characterized in that: The leaf spring is at least one of a spiral leaf spring and a wave leaf spring.

6. The phase change thermal management packaging structure according to claim 4, characterized in that: The thickness of the leaf spring ranges from 1 mm to 3 mm, both inclusive.

7. The phase change thermal management packaging structure according to claim 1, characterized in that: The phase change heat management material is a solid-liquid phase change heat management material.

8. The phase change thermal management packaging structure according to any one of claims 1 to 7, characterized in that: The elastic element is always in a compressed state in the phase change thermal management packaging structure.

9. A thermal management motor, characterized in that: The thermal management motor comprises the phase change thermal management packaging structure according to any one of claims 1 to 8.

10. The thermal management motor according to claim 9, characterized in that: The phase change thermal management packaging structure is arranged at least one of the motor end cover, the housing, the stator yoke and the stator end of the thermal management motor.

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