Motor, power assembly and electronic equipment

Abstract

The embodiment of the invention discloses a motor, a power assembly and electronic equipment, the motor comprises a coil assembly, a coil support of the coil assembly is connected with a heat dissipation structure, a closed space is formed between the coil support and the heat dissipation structure, and a coil and a coil fixing material are located in the closed space. The closed space is isolated from an external space outside the coil assembly; therefore, when the motor works in the vacuum environment, gas and pollutants generated by desorption of the gas by the coil fixing material are limited in the closed space, so that the dissipation of the gas and pollutants generated by the motor in the vacuum environment is reduced, and the motor can more easily meet the requirements of the gas release rate and the total quantity of the pollutants when working in the vacuum environment.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of drive devices, and in particular to a motor, a powertrain, and an electronic device. Background Art

[0002] Motors are common components in the electromechanical field. They are not only used in electromechanical equipment commonly seen by the public, but also in high-precision equipment such as scientific research equipment, high-precision manufacturing equipment, and medical equipment. When these high-precision equipment work in a vacuum environment, there are strict requirements on the outgassing rate of the motor and the total amount of pollutants generated by the motor.

[0003] At present, when processing the coil of the motor, the coil is usually fixed on the coil bracket using a coil fixing material such as epoxy resin. When the motor works in a vacuum environment, the total amount of gas and pollutants generated by the desorption of gas from these coil fixing materials escapes in the vacuum environment, making it difficult for the motor to meet the requirements for the degassing rate and the total amount of pollutants when working in a vacuum environment. Summary of the invention

[0004] The embodiments of the present application provide a motor, a power assembly and an electronic device, which can reduce the escape of gas and pollutants generated by desorption of gas from the coil fixing material of the motor in a vacuum environment when the motor operates in a vacuum environment.

[0005] A first aspect of an embodiment of the present application provides a motor, which includes a coil assembly, the coil assembly including a coil, a coil bracket and a heat dissipation structure; the coil bracket is connected to the heat dissipation structure, and a closed space is formed between the coil bracket and the heat dissipation structure, the coil is located in the closed space, the coil bracket is used to fix the coil, and the closed space is isolated from the external space outside the coil assembly; the heat dissipation structure is used to dissipate heat generated by the coil; the closed space includes a coil fixing material, and the coil fixing material is in contact with the coil and the heat dissipation structure respectively.

[0006] The motor may be a linear motor, a rotary motor or a voice coil motor.

[0007] The motor can be applied to a vacuum scene. When the motor works in a vacuum environment, the external space outside the coil assembly is a vacuum space, and the enclosed space is isolated from the vacuum space.

[0008] The coil support and the heat dissipation structure are compatible in shape, and can form a closed space after being connected.

[0009] Optionally, the coil bracket is welded to the heat dissipation structure to form the enclosed space.

[0010] Optionally, the coil support and the heat dissipation structure are integrally formed. In a possible implementation, the coil can be fixed to the coil support during the process of integrally forming the coil support and the heat dissipation structure, so that after the structure is formed, the coil is in a closed space formed in the structure.

[0011] Optionally, the coil is fixed to the coil support via a snap-fit ​​structure.

[0012] Optionally, the coil is glued and fixed to the coil support.

[0013] Optionally, the coil fixing material is a thermosetting insulating material, which contacts the coil and the heat dissipation structure respectively in liquid form and then solidifies at room temperature or under heating conditions, thereby further fixing the coil on the basis of the coil bracket.

[0014] Optionally, the coil fixing material includes a fixing liquid material and a curing agent; after the injected fixing liquid material contacts the coil and the heat dissipation structure respectively, the curing agent is added to the fixing liquid material to solidify the fixing liquid material, thereby further fixing the coil on the basis of the coil bracket.

[0015] In the embodiment of the present application, by connecting the coil bracket and the heat dissipation structure, a closed space is formed between the coil bracket and the heat dissipation structure, and the coil and the coil fixing material are located in the closed space, so that the gas and pollutants generated by the coil fixing material are confined in the closed space; in this way, when the motor provided in the embodiment of the present application works in a vacuum environment, the gas and pollutants generated by the desorbed gas of the coil fixing material are less likely to escape into the external space of the coil assembly (that is, the vacuum environment), and the motor can more easily meet the requirements of the degassing rate and the total amount of pollutants when working in a vacuum environment.

[0016] In a possible implementation, the coil support or the heat dissipation structure further includes a perfusion hole connecting the enclosed space and the external space, and the perfusion hole is used to perfuse the coil fixing material into the enclosed space, and the coil fixing material perfused into the enclosed space immerses the coil.

[0017] The injection hole may be arranged on the coil support or on the heat dissipation structure, and it is only necessary to seal the injection hole after injecting the coil fixing material through the injection hole.

[0018] The injection hole may be opened during the production of the coil support, the heat dissipation structure, or the integrated structure of the coil support and the heat dissipation structure, or may be opened after the enclosed space is formed.

[0019] In the embodiment of the present application, the coil fixing material can be poured into the enclosed space by setting the filling hole. The coil is fixed by first filling the liquid coil fixing material and then solidifying it. This can make the contact between the coil fixing material and the coil and the heat dissipation structure more complete, thereby reducing the contact thermal resistance caused by the rough contact surface.

[0020] In a possible implementation, the coil assembly further includes a blind flange, and the blind flange is welded to the injection hole to isolate the closed space from the external space.

[0021] Among them, the blind plate flange includes a blind plate part and a flange part, the flange part includes a hollow channel, and the hollow channel is opposite to the injection hole; the first end of the flange part is welded to the injection hole, and the second end is connected to the blind plate part; the blind plate part includes a boss and a sealing ring, the boss is adapted to the through hole of the hollow channel at the second end of the flange part, the peripheral surface of the boss is in contact with the inner wall of the hollow channel, and the sealing ring is arranged on the outside of the boss for sealing the gap generated when the boss contacts the inner wall of the hollow channel.

[0022] Optionally, the outer peripheral surface of the flange portion is welded to the inner wall of the injection hole, and the hollow channel is connected to the external space and the closed space through the injection hole.

[0023] Optionally, the flange is welded to the coil support or the heat dissipation structure; the area formed by the weld between the flange and the coil support includes the injection hole, or the area formed by the weld between the flange and the heat dissipation structure includes the injection hole. The hollow channel of the flange is connected to the injection hole.

[0024] In another possible implementation, the coil assembly further includes a metal piece; after the coil fixing material is poured into the enclosed space, the metal piece welds the pouring hole to isolate the enclosed space from the external space.

[0025] Optionally, the metal piece is welded to the inner wall of the injection hole.

[0026] Optionally, the metal part is welded to the coil support or the heat dissipation structure; the area formed by the weld between the metal part and the coil support includes the injection hole, or the area formed by the weld between the metal part and the heat dissipation structure includes the injection hole.

[0027] In the embodiment of the present application, by providing a filling hole and a blind flange or metal part for sealing the filling hole, it is possible to maintain the airtightness of the enclosed space after the coil fixing material is poured into the enclosed space, thereby reducing the total amount of gas and pollutants generated by the coil fixing material that escape outside the enclosed space.

[0028] In a possible implementation, the heat dissipation structure includes a heat dissipation pipeline, and the heat dissipation pipeline is used to flow cooling liquid or cooling gas.

[0029] The outlet and inlet of the heat dissipation pipe are arranged on the surface of the heat dissipation structure outside the enclosed space, the inlet of the heat dissipation pipe is connected to a cold source, and the coolant or cooling gas in the cold source flows in the heat dissipation pipe.

[0030] In the embodiment of the present application, convection heat is dissipated through the coolant or cooling gas in the heat dissipation pipe, and the heat generated when the coil is working is absorbed and transferred to the outside, so that the coil can work at a preset temperature.

[0031] In one possible implementation, the coil bracket includes an external bracket and an internal bracket, the external bracket includes a hollow space, the internal bracket is in the hollow space and connected to the external bracket, and the internal bracket is used to fix the coil; the hollow space has a first space opening and a second space opening that are connected to each other, the heat dissipation structure includes a first heat dissipation structure and a second heat dissipation structure, the first heat dissipation structure is connected to the first space opening, and the second heat dissipation structure is connected to the second space opening, wherein a closed space is formed between the first heat dissipation structure, the external bracket and the second heat dissipation structure.

[0032] In a possible implementation, the coil bracket includes a fixing portion, the outer peripheral surface of the fixing portion is used to fix the coil, both ends of the fixing portion radially extend to form a covering portion, the heat dissipation structure is covered outside the fixing portion, the covering portion is connected to the heat dissipation structure, and the enclosed space is formed between the heat dissipation structure and the covering portion.

[0033] In the embodiment of the present application, the coil assembly can be applied to different types of motors by means of different shapes and structures of the coil bracket and the heat dissipation structure.

[0034] In a possible implementation, the motor further includes a vacuum feedthrough, and the coil support or the heat dissipation structure includes a wire outlet hole, which connects the external space and the enclosed space; the vacuum feedthrough is plugged into the wire outlet hole, and the wires of the coil are connected to the power supply in the external space through the vacuum feedthrough.

[0035] In the embodiment of the present application, an electrical connection is provided between the coil and the power source in the external space through a vacuum feedthrough, so that the coil can be powered on and operate while maintaining the sealing of the sealed space, thereby achieving the goal of reducing the total amount of gas and pollutants generated by the coil fixing material that escape into the vacuum environment when the motor can operate in a vacuum environment.

[0036] A second aspect of an embodiment of the present application provides a powertrain, which includes a motor controller and a motor as described in any possible implementation of the first aspect, wherein the motor controller is connected to the motor and is used to control the operation of the motor.

[0037] A third aspect of an embodiment of the present application provides an electronic device, which includes a motor as described in any possible implementation of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of a motor provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of the structure of a coil assembly provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of the structure of another motor provided in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the structure of another coil assembly provided in an embodiment of the present application;

[0042] Figure 5 A schematic diagram of the structure of another coil assembly provided in an embodiment of the present application;

[0043] Figure 6 A schematic diagram of the structure of another motor provided in an embodiment of the present application;

[0044] Figure 7 A schematic diagram of the structure of another coil assembly provided in an embodiment of the present application;

[0045] Figure 8 A schematic structural diagram of another coil assembly provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application are described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only embodiments of a part of the present application, rather than all embodiments. It is known to those of ordinary skill in the art that with the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0047] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the descriptions used in this way can be interchangeable where appropriate, so that the embodiments can be implemented in a sequence other than that illustrated or described in the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products or devices.

[0048] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in another embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0049] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context.

[0050] Vacuum technology is the technology required to establish a physical environment below atmospheric pressure, that is, a vacuum environment, and to carry out process manufacturing, physical measurement, and scientific experiments in a vacuum environment. A vacuum environment can provide highly precise environmental conditions and is often used as a working scene for high-precision equipment such as scientific research equipment, industrial manufacturing, and medical equipment.

[0051] In recent years, with the continuous development of motor technology, motors can have the characteristics of small size, high acceleration and fast response, and are therefore used as power sources in high-precision equipment, such as precision positioning systems for disks and laser discs, lens positioning in optical systems, and precision electron tube and vacuum tube control in medical devices.

[0052] Therefore, when the motor is used in high-precision equipment, it is often necessary to work in a vacuum environment. It is understandable that the premise for a vacuum environment to provide highly precise environmental conditions is to maintain the vacuum degree of the vacuum environment, that is, the number of gas molecules and pollutant molecules in each cubic centimeter of space in the vacuum environment is less than a predetermined value. The surface of the equipment or components placed in a vacuum environment will naturally release gas. This process is called desorption of gas. The amount of gas released in the vacuum environment per unit time is called the degassing rate. The degassing rate is an important parameter of the vacuum environment. The degassing rate of the vacuum environment is the total degassing rate of all equipment in the vacuum environment. Therefore, when high-precision equipment works in a vacuum environment, in order to ensure the precision of the high-precision equipment and the quality of the output results, there are usually high requirements for the degassing rate of the high-precision equipment.

[0053] The degassing rate requirement for high-precision equipment is also the degassing rate requirement for the motor in the high-precision equipment. Since the total amount of gas and pollutants generated by the desorption of the coil fixing material in the motor that escape into the vacuum environment is large, it is difficult for the motor to meet the degassing rate requirements and the total amount of pollutants requirements when working in a vacuum environment. Therefore, there is an urgent need for a motor that can reduce the escape of gas and pollutants generated by the desorption of the coil fixing material in the vacuum environment when working in a vacuum environment.

[0054] The embodiments of the present application provide a motor, a power assembly and an electronic device, which can reduce the escape of gas and pollutants generated by desorption of gas from the coil fixing material of the motor in a vacuum environment when the motor operates in a vacuum environment.

[0055] See also Figure 1 , Figure 1 A schematic diagram of the structure of a motor provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the motor 10 includes a coil assembly 20 and a magnetic steel assembly 30, the coil assembly 20 includes a coil 201, and the magnetic steel assembly 30 includes a pair of permanent magnets; the pair of permanent magnets are distributed on opposite sides of the coil 201, and the N pole of one of the pair of permanent magnets points to the coil 201, and the S pole of the other points to the coil 201, and the coil 201 is in a uniform magnetic field emitted between the pair of permanent magnets.

[0056] Optionally, the coil assembly 20 and the magnetic steel assembly 30 may be connected in a sliding manner. Optionally, the two may not be connected, one of which is connected to a sliding structure or a rotating structure (not shown in the figure) in the motor 10 to convert electromagnetic energy into mechanical energy when the coil 201 is energized, and the other is connected to a fixed structure (not shown in the figure) in the motor 10.

[0057] The coil 201 is electrically connected to a power source outside the motor.

[0058] The working principle of the motor 10 is as follows: a pair of permanent magnets of the magnetic steel assembly 30 emit a uniform magnetic field in the air gap between each other, and the coil 201 in the magnetic field generates an electromagnetic force when energized; at this time, if the magnetic steel assembly 30 is fixed and the moving load is connected to the coil assembly 20, that is, when the motor 10 is a moving coil type motor, the coil assembly 20 performs linear or rotational motion under the action of the electromagnetic force, driving the moving load to perform execution or rotational motion; if the coil assembly 20 is fixed and the moving load is connected to the magnetic steel assembly 30, that is, when the motor 10 is a moving magnet type motor, the magnetic steel assembly 30 performs linear or rotational motion under the action of the electromagnetic force, driving the moving load to perform execution or rotational motion.

[0059] The moving load is the load on the mover of the motor 10 during the movement process.

[0060] The motor 10 may be at least one of a voice coil motor, a linear motor and a rotary motor.

[0061] When the motor 10 is a voice coil motor, the moving load is the driving target of the motor 10. For example, when the motor 10 is applied to a lens driver, the moving load of the motor 10 can be a lens holder. When the motor 10 is a motor of another type other than a voice coil motor, the moving load is a transmission structure, such as a transmission shaft, through which the motor 10 outputs force outward. It is understandable that when the motor 10 is a motor of another type other than a voice coil motor, the motor 10 further includes an outer shell, in which the coil assembly 20, the magnetic steel assembly 30 and the transmission structure are located.

[0062] In the motor 10, the commonly used coil fixing materials have a great influence on the degassing rate of the motor 10. When the motor 10 works in a vacuum environment, more gases and pollutants desorbed by the coil fixing materials escape into the vacuum environment, making it difficult for the motor 10 to meet the degassing rate requirements of the vacuum environment. To solve this problem, the coil assembly 20 can be made as follows: Figure 2 The structure shown.

[0063] See also Figure 2 , Figure 2 The schematic diagram of the structure of a coil assembly provided in an embodiment of the present application is a coil assembly 20, which includes a coil 201, a coil support 202, and a heat dissipation structure 203. The coil support 202 is connected to the heat dissipation structure 203, and a closed space is formed between the coil support 202 and the heat dissipation structure 203. The coil 201 is located in the closed space, and the coil support 202 is used to fix the coil 201. The closed space is isolated from the external space outside the coil assembly 20.

[0064] It can be understood that when the motor 10 is in a vacuum environment, the external space is a vacuum space.

[0065] The coil support 202 and the heat dissipation structure 203 are adapted to each other in shape, and the two can form a closed space after being connected. Figure 2 As shown, the heat dissipation structure 203 can be covered on the coil support, and the lower edge of the heat dissipation structure 203 is adapted to the radial edge of the coil support 202. It can be understood that Figure 2 The structure shown is only an example and not a limitation. In actual motor products, the coil support 202 and the heat dissipation structure 203 may also be in other shapes, such as Figures 3 to 8 The two possible structures shown will be described below and will not be repeated here.

[0066] The coil support 202 and the heat dissipation structure 203 are integrated to form the enclosed space. Optionally, the coil support 202 and the heat dissipation structure 203 are welded to form the enclosed space.

[0067] Optionally, the coil support 202 and the heat dissipation structure 203 are an integrally formed structure. Exemplarily, the integrally formed structure can be produced by 3D printing.

[0068] The heat dissipation structure 203 is used to dissipate the heat generated by the coil 201 .

[0069] Optionally, the heat dissipation structure 203 includes a heat dissipation pipe (not shown in the figure), which is connected to a cold source outside the motor 10, and the cold source is used to provide coolant or cooling gas; the coolant or cooling gas flows in the heat dissipation pipe, continuously taking away the heat generated by the coil 201 during operation, so that the coil 201 can operate within a preset temperature range.

[0070] The enclosed space includes a coil fixing material 204, and the coil fixing material 204 is in contact with the coil 201 and the heat dissipation structure 203 respectively. The coil fixing material 204 is used to further fix the coil 201.

[0071] Specifically, the coil 201 can be fixedly connected to the coil support 202 by means of mechanical structures such as snaps or glue bonding; however, when the motor 10 starts to output mechanical energy, especially when the coil assembly 20 is used as a mover, the connection between the coil 201 and the coil support 202 will be affected by the inertial force. In the absence of the coil fixing material 204, there is a risk that the coil 201 will be separated from the coil support 202. Therefore, filling the coil fixing material 204 between the coil 201 and the heat dissipation structure 203 can further fix the coil 201 so that it is stably located within the magnetic field range of the magnetic steel assembly 30.

[0072] Optionally, the coil fixing material 204 is a thermosetting insulating material, which contacts the coil 201 and the heat dissipation structure 203 in liquid form and then solidifies at room temperature or under heating conditions. Exemplarily, the coil fixing material may be phenolic resin, epoxy resin or polyimide.

[0073] Optionally, the coil fixing material 204 includes a fixing liquid material and a curing agent; after the injected fixing liquid material contacts the coil 201 and the heat dissipation structure 203 respectively, the curing agent is added to the fixing liquid material to solidify the fixing liquid material. Exemplarily, the fixing liquid material may be epoxy resin.

[0074] Understandably, Figure 2 The state of the coil fixing material 204 in the enclosed space is only an example and not a limitation. In a possible implementation, the coil fixing material 204 in the enclosed space immerses the coil 201 .

[0075] By first pouring liquid coil fixing material 204 to immerse the coil 201 and then solidifying it to fix the coil 201, the coil fixing material 204 can be more fully in contact with the coil 201 and the heat dissipation structure 203, and the heat generated by the coil 201 can be completely transferred to the heat dissipation structure 203 through the coil fixing material 204; at the same time, the full contact between the coil fixing material 204 and the heat dissipation structure 203 can reduce the contact thermal resistance caused by the rough contact surface between the heat dissipation structure 203 and the coil fixing material 204.

[0076] In the embodiment of the present application, by connecting the coil bracket 202 and the heat dissipation structure 203, a closed space is formed between the coil bracket 202 and the heat dissipation structure 203, and the coil 201 and the coil fixing material 204 are located in the closed space, so that the gas and pollutants generated by the coil fixing material 204 are confined in the closed space; in this way, when the motor 10 works in a vacuum environment, the gas and pollutants generated by the desorbed gas of the coil fixing material are less likely to escape into the external space of the coil assembly 20 (that is, the vacuum environment), and the motor can more easily meet the requirements of the degassing rate and the total amount of pollutants when working in a vacuum environment.

[0077] The structure and working principle of the motor provided in the embodiments of the present application will be further explained through two embodiments below.

[0078] Embodiment 1

[0079] See also Figures 3 to 5 , Figure 3 A schematic diagram of the structure of another motor provided in an embodiment of the present application, Figure 4 and Figure 5 Figure 1 is a schematic diagram of the coil assembly in the motor. Figure 3As shown, the motor includes a coil assembly and a magnetic steel assembly 8. When the coil assembly is energized, the coil assembly or the magnetic steel assembly 8 will perform linear motion under the action of the electromagnetic force generated by the coil assembly.

[0080] The coil assembly includes a coil support 1, a coil 2, a first heat dissipation structure 3a, a second heat dissipation structure 3b, and a vacuum feedthrough 4; the coil support 1 includes a wire outlet hole 5 and a perfusion hole 6; the first heat dissipation structure 3a includes a heat dissipation pipe, and the inlet 31a and the outlet 31b of the heat dissipation pipe are arranged on the outer surface of the first heat dissipation structure 3a facing away from the coil support 1.

[0081] The coil support 1 includes an external support and an internal support, the external support includes a hollow space, the internal support is in the hollow space and connected to the external support, and the internal support is used to fix the coil 2; the hollow space has a first space opening and a second space opening that are connected to each other, the first heat dissipation structure 3a is connected to the first space opening, and the second heat dissipation structure 3b is connected to the second space opening. A closed space is formed between the first heat dissipation structure 3a, the external support, and the second heat dissipation structure 3b.

[0082] exist Figures 3 to 5 In a specific example, the external bracket is a rectangular ring, and the first heat dissipation structure 3a and the second heat dissipation structure 3b are the same rectangular cold plates; the first space opening of the external bracket is adapted to the first heat dissipation structure 3a, and the second space opening is adapted to the second heat dissipation structure 3b. More specifically, the length and width of the rectangular ring are respectively equal to the length and width of the rectangular cold plate.

[0083] It is understandable that, in some other embodiments, the shape of the external bracket can be designed according to the actual needs of the motor. For example, the external bracket can be a circular ring, a diamond ring, or a trapezoidal ring.

[0084] Optionally, the first heat dissipation structure 3a is connected to the side surface 7b at the first space opening of the external bracket; the second heat dissipation structure 3b is connected to the side surface 7a at the second space opening of the external bracket.

[0085] A cooling fluid flows in the heat dissipation pipe. The cooling fluid flows in from the inlet 31 a and flows out from the outlet 31 b.

[0086] Among them, the wire outlet hole 5 and the injection hole 6 both connect the enclosed space and the external space outside the coil assembly; the vacuum feedthrough 4 is plugged into the wire outlet hole 5, and the wires of the coil 2 are connected to the power supply in the external space through the vacuum feedthrough 4; the injection hole 6 is used to feed the coil fixing material into the enclosed space.

[0087] Understandably, Figures 3 to 5The positions of the outlet holes 5 and the injection holes 6 shown in the figure are for example only and are not limiting. The outlet holes 5 and the injection holes 6 can be opened at any position of the external bracket, the first heat dissipation structure 3a and the second heat dissipation structure 3b as long as the original function of the opening component is not affected.

[0088] Understandably, Figures 3 to 5 The number of the middle outlet holes 5 and the injection holes 6 is only an example and not a limitation, and the number of the outlet holes 5 and the injection holes 6 can be determined according to actual needs.

[0089] Among them, the vacuum feedthrough 4 is a device that connects cables, pipes or other equipment from a non-vacuum environment to a vacuum system without affecting the vacuum degree of the vacuum system; the vacuum feedthrough 4 is used to provide an electrical connection between a power source in an external space and the coil 2 while maintaining the sealing of the enclosed space.

[0090] In one possible implementation, Figure 5 As shown, in Figure 5 In a specific example, the vacuum feedthrough 4 includes a base, a first connecting part and a second connecting part; when the vacuum feedthrough 4 is inserted into the wire outlet hole 5, the peripheral surface of the base is welded to the inner wall of the wire outlet hole 5; the first connecting part is used to connect the wires of the coil 2, and the second connecting part is used to connect the power supply in the external space.

[0091] Optionally, the vacuum feedthrough 4 may be a vacuum electrode, and the first connecting portion and the second connecting portion are pins.

[0092] Optionally, a vacuum feedthrough is used to lead out the wires of the coil 2; the vacuum feedthrough includes a hollow channel that passes through the first connecting part, the second connecting part and the base; the hollow channel includes an elastic seal, through which the wires of the coil 2 pass to be electrically connected to a power source in the external space, and the seal is used to maintain the sealing of the enclosed space after the wires pass through.

[0093] In another possible implementation, the coil assembly includes a flange, and the vacuum feedthrough 4 is connected to the wire outlet hole 5 via the flange. The flange includes a hollow channel, the flange is welded to the wire outlet hole 5, and the hollow channel is communicated with the wire outlet hole 5.

[0094] The flange may be a CF flange (conflat flange) or an ISO flange (ISO flange).

[0095] Optionally, the outer surface of the flange is welded to the inner wall of the wire outlet hole 5 .

[0096] Optionally, the flange is welded to the external bracket, the first heat dissipation structure 3 a or the second heat dissipation structure 3 b , and an area formed by a weld between the flange and the external bracket, the first heat dissipation structure 3 a or the second heat dissipation structure 3 b includes the wire outlet hole 5 .

[0097] Among them, the vacuum feedthrough 4 is inserted into the hollow channel of the flange, and the outer surface of the vacuum feedthrough 4 is in close contact with the inner wall of the hollow channel; the hollow channel of the flange is used to connect the vacuum feedthrough 4. One side is provided with an elastic sealing ring. After the vacuum feedthrough 4 is inserted into the hollow channel, the sealing ring is deformed to seal the gap between the outer surface of the vacuum feedthrough 4 and the inner wall of the hollow channel.

[0098] Among them, when the coil fixing material is poured into the enclosed space through the pouring hole 6, the surface where the pouring hole 6 is located can be used as the top to place the coil assembly, so as to facilitate the coil fixing material to fill the enclosed space under the action of gravity, so that the coil fixing material fully contacts the coil 2, the first heat dissipation structure 3a and the second heat dissipation structure 3b until the coil 2 is immersed.

[0099] In a possible implementation, the coil assembly further includes a blind flange, and the blind flange is welded to the injection hole 6 to isolate the enclosed space from the external space.

[0100] Among them, the blind plate flange includes a blind plate part and a flange part, the flange part includes a hollow channel, and the hollow channel is opposite to the injection hole 6; the first end of the flange part is welded to the injection hole 6, and the second end is connected to the blind plate part; the blind plate part includes a boss and a sealing ring, the boss is adapted to the through hole of the hollow channel at the second end of the flange part, the peripheral surface of the boss is in contact with the inner wall of the hollow channel, and the sealing ring is arranged on the outside of the boss to seal the gap generated when the boss contacts the inner wall of the hollow channel.

[0101] Optionally, the outer peripheral surface of the flange portion is welded to the inner wall of the injection hole, and the hollow channel is connected to the external space and the closed space through the injection hole 6.

[0102] Optionally, the flange is welded to the external bracket, the first heat dissipation structure 3a or the second heat dissipation structure 3b; the area formed by the weld between the flange and the external bracket, the first heat dissipation structure 3a or the second heat dissipation structure 3b includes the injection hole 6. That is, the hollow channel of the flange is connected to the injection hole 6.

[0103] In another possible implementation, the coil assembly further includes a metal piece; after the coil fixing material is poured into the enclosed space, the metal piece is welded with a pouring hole 6 to isolate the enclosed space from the external space.

[0104] Optionally, the metal piece is welded to the inner wall of the injection hole 6 .

[0105] Optionally, the metal piece is welded to the external bracket, the first heat dissipation structure 3 a or the second heat dissipation structure 3 b ; and the area formed by the weld between the metal piece and the external bracket, the first heat dissipation structure 3 a or the second heat dissipation structure 3 b includes a perfusion hole 6 .

[0106] By providing the injection hole 6 and a blind flange or metal part for sealing the injection hole, the airtightness of the enclosed space can be maintained after the coil fixing material is injected into the enclosed space, thereby reducing the total amount of gas and pollutants generated by the coil fixing material escaping outside the enclosed space.

[0107] It is understandable that, based on the above principle, the coil assembly can also be provided with holes for other functions, and it is only necessary to maintain the sealing of the enclosed space while achieving other functions.

[0108] Embodiment 2

[0109] See also Figures 6 to 8 , Figure 6 A schematic diagram of the structure of another motor provided in an embodiment of the present application, Figure 7 and Figure 8 Figure 1 is a schematic diagram of the coil assembly in the motor. Figure 6 As shown, the motor includes a coil assembly and a magnetic steel assembly 8. When the coil assembly is energized, the coil assembly or the magnetic steel assembly 8 will perform linear motion under the action of the electromagnetic force generated by the coil assembly.

[0110] Among them, the coil assembly includes a coil bracket 1, a coil 2, a heat dissipation structure 3, and a vacuum feedthrough 4; the coil bracket 1 includes a perfusion hole 6; the first heat dissipation structure 3a includes a heat dissipation pipe and a vacuum feedthrough 4, and the inlet and outlet of the heat dissipation pipe (not shown in the figure) are arranged on the outer surface of the heat dissipation structure 3.

[0111] The coil support 1 includes a fixing portion, the outer peripheral surface of which is used to fix the coil 2; Figure 2 As shown, the number of coils 2 can be multiple, and the multiple coils 2 are evenly distributed on the outer peripheral surface of the fixing portion. Both ends of the fixing portion extend radially to form a cover portion, and the heat dissipation structure 3 is covered outside the fixing portion. The cover portion is connected to the heat dissipation structure 3, and the enclosed space is formed between the heat dissipation structure 3 and the cover portion.

[0112] The cover portion includes an upper cover portion and a lower cover portion.

[0113] exist Figures 6 to 8 In a specific example, the fixing part is a cylinder, and both ends of the fixing part radially extend to form a disc-shaped cover part with the same diameter. Optionally, the coil support 1 can be formed by connecting a cylindrical fixing part and two disc cover parts.

[0114] Optionally, the diameters of the upper covering portion and the lower covering portion may be different.

[0115] Among them, the heat dissipation structure 3 is a cylindrical ring, the height of the heat dissipation structure 3 is equal to the height of the fixed part, the inner diameter of the heat dissipation structure 3 is larger than the diameter of the fixed part and smaller than the diameter of the cover part, the outer diameter of the heat dissipation structure 3 is smaller than or equal to the diameter of the first disc, and the two bottom surfaces of the heat dissipation structure 3 are respectively welded to the upper cover part and the lower cover part, thereby forming the enclosed space between the heat dissipation structure 3 and the cover part.

[0116] It can be understood that the heat dissipation structure, wire outlet holes and injection holes of the coil assembly in Example 2 are similar to the heat dissipation structure, wire outlet holes and injection holes of the coil assembly in Example 1, and can be understood by referring to the relevant description in Example 1, which will not be repeated here.

[0117] In the embodiment of the present application, the coil assembly can be applied to different types of motors by providing coil supports and heat dissipation structures of different shapes and structures.

[0118] In the embodiment of the present application, the coil is energized by opening a wire outlet hole on the coil assembly so that the motor can work normally; the injection hole is opened to inject the coil fixing material in the confined space to fix the coil and reduce the contact thermal resistance between the coil and the heat dissipation structure; the wire outlet hole is connected by a vacuum feed-through and the injection hole is connected by a flange or a metal part to maintain the sealing of the confined space, so that the motor can work better in a vacuum environment, and at the same time, the gas and pollutants generated by the coil fixing material are confined in the confined space, reducing the escape of the gas and pollutants generated by the motor in the vacuum environment, making it easier for the motor to meet the requirements of the degassing rate and the total amount of pollutants when working in a vacuum environment.

[0119] An embodiment of the present application also provides a powertrain, which includes a motor controller and the motor described in the above embodiment, the motor controller is connected to the motor, and the motor controller is used to control the operation of the motor.

[0120] An embodiment of the present application also provides an electronic device, which includes the motor described in the above embodiment.

[0121] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0122] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A motor, characterized in that: The motor comprises a coil assembly, wherein the coil assembly comprises a coil, a coil support and a heat dissipation structure; The coil bracket is connected to the heat dissipation structure, and a closed space is formed between the coil bracket and the heat dissipation structure. The coil is located in the closed space. The coil bracket is used to fix the coil. The closed space is isolated from the external space outside the coil assembly. The heat dissipation structure is used to dissipate the heat generated by the coil. The closed space includes a coil fixing material, and the coil fixing material is in contact with the coil and the heat dissipation structure respectively.

2. The motor according to claim 1, characterized in that The coil support or the heat dissipation structure further includes a pouring hole connecting the enclosed space and the external space, wherein the pouring hole is used to pour the coil fixing material into the enclosed space, and the coil fixing material poured into the enclosed space immerses the coil.

3. The motor according to claim 2, characterized in that The coil assembly further includes a blind flange, and the blind flange is welded to the injection hole to isolate the enclosed space from the external space.

4. The motor according to claim 2, characterized in that The coil assembly further includes a metal piece; after the coil fixing material is poured into the enclosed space, the metal piece is welded to the pouring hole to isolate the enclosed space from the external space.

5. The motor according to any one of claims 1 to 4, characterized in that: The heat dissipation structure includes a heat dissipation pipeline, and the heat dissipation pipeline is used for flowing cooling liquid or cooling gas.

6. The motor according to any one of claims 1 to 5, characterized in that: The coil support comprises an external support and an internal support, the external support comprises a hollow space, the internal support is located in the hollow space and connected to the external support, and the internal support is used to fix the coil; The hollow space has a first space opening and a second space opening that are connected to each other, and the heat dissipation structure includes a first heat dissipation structure and a second heat dissipation structure, the first heat dissipation structure is connected to the first space opening, and the second heat dissipation structure is connected to the second space opening, wherein a closed space is formed between the first heat dissipation structure, the external bracket and the second heat dissipation structure.

7. The motor according to any one of claims 1 to 5, characterized in that: The coil bracket includes a fixing portion, the outer peripheral surface of the fixing portion is used to fix the coil, both ends of the fixing portion radially extend to form a covering portion, the heat dissipation structure is covered outside the fixing portion, the covering portion is connected to the heat dissipation structure, and the enclosed space is formed between the heat dissipation structure and the covering portion.

8. The motor according to any one of claims 1 to 7, characterized in that: The motor also includes a vacuum feedthrough, and the coil support or the heat dissipation structure includes a wire outlet hole, which connects the external space and the enclosed space; the vacuum feedthrough is plugged into the wire outlet hole, and the wires of the coil are connected to the power supply in the external space through the vacuum feedthrough.

9. A powertrain, characterized in that: The powertrain includes a motor controller and a motor as described in any one of claims 1 to 8, wherein the motor controller is connected to the motor and is used to control the operation of the motor.

10. An electronic device, characterized in that: The electronic device comprises the motor according to any one of claims 1-8.

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