Motor and electric apparatus

Abstract

A motor and an electric apparatus. The motor comprises a stator assembly, the stator assembly comprising a winding assembly, a connector assembly and an interface portion; part of the connector assembly is located in an interface cavity of the interface portion; the winding assembly is provided with a central hole, at least part of the interface portion being located in the central hole; in the radial direction of the winding assembly, at least part of the interface portion is located on the inner side of the winding assembly; in the axial direction of the winding assembly, at least part of the interface portion overlaps with the winding assembly. Thus, in the axial and radial directions of the winding assembly, the structures of the interface portion and the winding assembly are more compact, thereby allowing the interface portion to make full use of the internal space of the winding assembly, and further helping to reduce the size of the stator assembly.

Description

Motor and electric device

[0001] The present application claims priority to the Chinese patent application No. 202411360315.7, filed on September 26, 2024, and entitled "Motor and electric device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the fluid control technology, and in particular, to a motor and electric device. BACKGROUND

[0003] The related motor and electric device comprises a stator and a bus assembly, the stator is electrically connected with the bus assembly, and how to reduce the size of the motor and electric device is a technical problem. SUMMARY

[0004] The inventor finds that in the related art, the interface of the bus assembly is located on the axial or radial outer side of the stator, which occupies additional space on the axial or radial outer side of the stator, which causes the problem of large size of the motor. The purpose of the present application is to provide a motor and electric device, which is beneficial to reduce the size of the motor and electric device.

[0005] To achieve the above-mentioned purpose, the present application provides a technical solution as follows:

[0006] A motor comprises a stator assembly, the stator assembly comprises a winding assembly, a connector assembly and an interface part, the winding assembly is electrically connected with the connector assembly, part of the connector assembly is located in an interface cavity of the interface part, the winding assembly has a central hole, at least part of the interface part is located in the central hole, along the radial direction of the winding assembly, at least part of the interface part is located on the inner side of the winding assembly; along the axial direction of the winding assembly, at least part of the interface part and the winding assembly are arranged in an overlapping manner.

[0007] In the motor provided by the present application, along the radial direction of the winding assembly, at least part of the interface part is located on the inner side of the winding assembly, and along the axial direction of the winding assembly, at least part of the interface part and the winding assembly are arranged in an overlapping manner, so that the structure of the interface part and the winding assembly is more compact along the axial and radial directions of the winding assembly, which makes the interface part fully utilize the internal space of the winding assembly, and is beneficial to reduce the size of the motor.

[0008] An electric device comprises a motor and a fluid assembly; the motor comprises a stator assembly and a magnetic rotor, the stator assembly comprises a winding assembly, a connector assembly and an interface part, the winding assembly is electrically connected with the connector assembly, part of the connector assembly is located in an interface cavity of the interface part, the winding assembly has a central hole, at least part of the interface part is located in the central hole, along the radial direction of the winding assembly, at least part of the interface part is located inside the winding assembly; along the axial direction of the winding assembly, at least part of the interface part and the winding assembly are arranged in an overlapping manner; the fluid assembly comprises an execution part, the execution part is a vane or a valve core, the execution part and the magnetic rotor are limitedly matched, and the execution part and the magnetic rotor can rotate relative to the stator assembly.

[0009] In the electric device provided in the application, along the radial direction of the winding assembly, at least part of the interface part is located inside the winding assembly, and along the axial direction of the winding assembly, at least part of the interface part and the winding assembly are arranged in an overlapping manner, so that the structure of the interface part and the winding assembly is more compact along the axial direction and the radial direction of the winding assembly, the internal space of the winding assembly is fully utilized by the interface part, and the size of the electric device is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 is a schematic structural diagram of an electric device according to an embodiment of the application;

[0011] Fig. 2 is a schematic structural diagram of a cross section of the electric device in Fig. 1;

[0012] Fig. 3 is a schematic structural diagram of a partition part and a stator assembly in Fig. 1;

[0013] Fig. 4 is a schematic structural diagram of the stator assembly in Fig. 3;

[0014] Fig. 5 is a schematic structural diagram of a winding assembly, a stator core and an insulation framework in Fig. 2;

[0015] Fig. 6 is a schematic structural diagram of a first end cover in Fig. 2;

[0016] Fig. 7 is a schematic structural diagram of a cylinder in Fig. 2;

[0017] Fig. 8 is a schematic structural diagram of a grounding assembly and three connector assemblies in Fig. 4;

[0018] Fig. 9 is a schematic structural diagram of a first connecting section in Fig. 8;

[0019] Fig. 10 is a perspective structural schematic view of the second connecting segment in Fig. 9; 10-electric device, 100-stator assembly, 200-fluid assembly, 110-winding assembly, 120-plug assembly, 130-stator shell, 140-ground assembly, 150-stator core, 160-insulation skeleton, 210-magnetic rotor, 220-executive component, 230-pump shell, 233-first inlet and outlet, 232-second inlet and outlet, 231-separation part; 111-winding, 112-center hole, 1111-coil segment, 1112-tap segment, 151-core part, 152-base, 121-first pin, 122-first connecting segment, 123-second pin, 1221-first accommodating part, 1222-second accommodating part, 131-cylinder, 132-first end cover, 1321-interface part, 1321a-interface cavity, 1321b-bottom wall part, 1321c-circumferential wall part, 1321d-limiting hole, 1321e-sealing ring mounting part, 1311-large diameter segment, 1312-small diameter segment, 1313-limiting part, 141-first ground pin, 142-second connecting segment, 143-second ground pin, 1421-third accommodating part, 1422-fourth accommodating part, 211-magnet, 212-rotor core. DETAILED DESCRIPTION

[0020] The application will be further described below in conjunction with the drawings and specific embodiments:

[0021] In the related art, the motor includes a stator and a busbar assembly, the stator is electrically connected to the busbar assembly, and how to reduce the size of the stator assembly is a technical problem.

[0022] The inventor found that in the related art, the interface of the busbar assembly is located on the axial or radial outer side of the stator, and the interface additionally occupies the space on the axial or radial outer side of the stator, which causes the problem of large size of the motor.

[0023] Further, the interface can be electrically connected to the wire harness of the thermal management device, the wire harness can be electrically connected to the controller of the thermal management device, and the controller can be electrically connected to a plurality of interfaces through the wire harness, which is conducive to the control integration of the thermal management device. The motor can be but is not limited to a part of an electric pump or an electric valve, the interface is very prominent on the motor of the electric pump or the electric valve, which is not conducive to reducing the size of the electric pump or the electric valve, and further not conducive to reducing the size of the thermal management device.

[0024] Based on the above technical problems, the embodiment of the present application provides an electric machine, comprising a stator assembly 100, the stator assembly 100 comprising a winding assembly 110, a connector assembly 120 and an interface part 1321, the winding assembly 110 being electrically connected to the connector assembly 120, part of the connector assembly 120 being located in an interface cavity 1321a of the interface part 1321, the winding assembly 110 having a central hole 112, at least part of the interface part 1321 being located in the central hole 112, along a radial direction of the winding assembly 110, at least part of the interface part 1321 being located on an inner side of the winding assembly 110; along an axial direction of the winding assembly 110, at least part of the interface part 1321 and the winding assembly 110 are arranged in an overlapping manner.

[0025] In the electric machine provided by the embodiment of the present application, along the radial direction of the winding assembly 110, at least part of the interface part 1321 is located on the inner side of the winding assembly 110, and along the axial direction of the winding assembly 110, at least part of the interface part 1321 and the winding assembly 110 are arranged in an overlapping manner, so that the structure of the interface part 1321 and the winding assembly 110 is more compact along the axial direction and the radial direction of the winding assembly 110, the internal space of the winding assembly 110 is fully utilized by the interface part 1321, the problem of the interface part 1321 protruding on the electric machine is reduced, and the size of the electric machine is further reduced.

[0026] The embodiment of the present application further provides an electric device 10, comprising an electric machine and a fluid assembly 200; the electric machine comprising a stator assembly 100 and a magnetic rotor 210, the stator assembly 100 comprising a winding assembly 110, a connector assembly 120 and an interface part 1321, the winding assembly 110 being electrically connected to the connector assembly 120, part of the connector assembly 120 being located in an interface cavity 1321a of the interface part 1321, the winding assembly 110 having a central hole 112, at least part of the interface part 1321a being located in the central hole 112, along a radial direction of the winding assembly 110, at least part of the interface part 1321 being located on an inner side of the winding assembly 110; along an axial direction of the winding assembly 110, at least part of the interface part 1321 and the winding assembly 110 are arranged in an overlapping manner; the fluid assembly 200 comprising an execution component 220, the execution component 220 being an impeller or a valve core, the execution component 220 and the magnetic rotor 210 being limitingly matched, and the execution component 220 and the magnetic rotor 210 being capable of rotating relative to the stator assembly 100.

[0027] In the electric device 10 provided by the embodiment, along the radial direction of the winding assembly 110, at least part of the interface portion 1321 is located on the inner side of the winding assembly 110, and along the axial direction of the winding assembly 110, at least part of the interface portion 1321 is arranged to overlap the winding assembly 110, so that along the axial direction and the radial direction of the winding assembly 110, the structure of the interface portion 1321 and the winding assembly 110 is more compact, the interface portion 1321 makes full use of the internal space of the winding assembly 110, the problem that the interface portion 1321 protrudes on the electric device 10 is reduced, and the size of the electric device 10 is further reduced.

[0028] In order to enable personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the present application. In order to enable personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the following, the motor provided by the embodiment of the present application will be described in detail in conjunction with FIGS. 1 to 10. The motor comprises a stator assembly 100 and a magnetic rotor 210.

[0030] In a possible implementation, the stator assembly 100 comprises a winding assembly 110, a connector assembly 120 and an interface portion 1321. The winding assembly 110 is electrically connected to the connector assembly 120. Part of the connector assembly 120 is located in an interface cavity 1321a of the interface portion 1321. The winding assembly 110 has a central hole 112. At least part of the interface portion 1321a is located in the central hole 112. Along the radial direction of the winding assembly 110, at least part of the interface portion 1321 is located on the inner side of the winding assembly 110. Along the axial direction of the winding assembly 110, at least part of the interface portion 1321 is arranged to overlap the winding assembly 110. The central hole 112 is part of the winding assembly 110. Along the axial direction of the winding assembly 110, the interface portion 1321 and the central hole 112 of the winding assembly 110 are arranged to overlap.

[0031] For the convenience of understanding, as shown in FIG. 4 and FIG. 5, the winding assembly 110 is approximately in the shape of a cylinder, and part of the interface portion 1321 is located inside the winding assembly 110. In the radial direction of the winding assembly 110, the interface portion 1321 is located inside the winding assembly 110. In the axial direction of the winding assembly 110, the interface portion 1321 and the winding assembly 110 are arranged to overlap, which can be understood as follows: the interface portion 1321 is projected in one radial direction of the winding assembly 110 to form a projection surface, and part of the projection surface of the interface portion 1321 overlaps the winding assembly 110. The other overlapping arrangement structures mentioned in the embodiment are consistent with the principle of the overlapping arrangement structure, and will not be specifically described. Therefore, in the axial direction and the radial direction of the winding assembly 110, the structure of the interface portion 1321 and the winding assembly 110 is more compact, so that the interface portion 1321 fully utilizes the internal space of the winding assembly 110, reduces the problem that the interface portion 1321 protrudes on the motor, and further helps to reduce the size of the motor.

[0032] In a possible implementation, the inner wall forming the interface cavity 1321a includes a bottom wall portion 1321b, the connector assembly 120 and the bottom wall portion 1321b are limitingly matched, in the radial direction of the winding assembly 110, the bottom wall portion 1321b is located inside the winding assembly 110; in the axial direction of the winding assembly 110, the bottom wall portion 1321b and the winding assembly 110 are arranged to overlap.

[0033] For the convenience of understanding, as shown in FIG. 2 and FIG. 6, the bottom wall portion 1321b is the bottom wall forming the interface cavity 1321a, which can limit the depth of the wire harness inserted into the interface cavity 1321a, and the end wall of one end of the wire harness can be limitingly matched with the bottom wall portion 1321b. The bottom wall portion 1321b is completely located inside the winding assembly 110. In the radial direction of the winding assembly 110, the bottom wall portion 1321b is located inside the winding assembly 110; in the axial direction of the winding assembly 110, the bottom wall portion 1321b and the winding assembly 110 are arranged to overlap, that is, the projection surface of the bottom wall portion 1321b in one radial direction of the winding assembly 110 overlaps the winding assembly 110, so that the structure of the bottom wall portion 1321b and the winding assembly 110 is compact, which is more conducive to reducing the size of the motor. It should be noted that the limitingly matched structure mentioned in the embodiment can be that one component is insert molded with another component, but is not limited to interference fit or threaded fit of two components.

[0034] In a possible implementation, the bottom wall portion 1321b is insert molded with the connector assembly 120.

[0035] In a possible implementation, the inner wall forming the interface cavity 1321a includes a circumferential wall portion 1321c, which is located at the inner side of the winding assembly 110 in the radial direction of the winding assembly 110, and at least part of the circumferential wall portion 1321c overlaps the winding assembly 110 in the axial direction of the winding assembly 110.

[0036] For ease of understanding, as shown in FIG. 2 and FIG. 6, the circumferential wall portion 1321c is a side wall forming the interface cavity 1321a, and the circumferential wall portion 1321c extends from the bottom wall portion 1321b to the axial side of the winding assembly 110, which can define the direction of the wire harness inserted into the interface cavity 1321a, and the outer side wall of one end of the wire harness can be limited in cooperation with the circumferential wall portion 1321c, and part of the circumferential wall portion 1321c is located inside the winding assembly 110. In the radial direction of the winding assembly 110, the circumferential wall portion 1321c is located at the inner side of the winding assembly 110, and in the axial direction of the winding assembly 110, part of the circumferential wall portion 1321c overlaps the winding assembly 110, that is, the circumferential wall portion 1321c partially overlaps the winding assembly 110 in the projection plane of the winding assembly 110 in the radial direction, so that the structure of the circumferential wall portion 1321c and the winding assembly 110 is compact, which is more conducive to reducing the size of the motor.

[0037] In a possible implementation, the connector of the wire harness is electrically connected to the connector assembly 120, and the connector of the wire harness is located in the interface cavity 1321a and is limited in cooperation with the bottom wall portion 1321b and the circumferential wall portion 1321c.

[0038] In a possible implementation, a sealing member is arranged between the circumferential wall portion 1321c and the connector of the wire harness, and the sealing member is in a compressed state. The circumferential wall portion 1321c can include a sealing ring mounting portion 1321e, and the sealing member is limited in cooperation with the sealing ring mounting portion 1321e, or the connector of the wire harness includes a sealing ring accommodating portion, and the sealing member is limited in cooperation with the sealing ring accommodating portion. In a possible implementation, the connector assembly 120 includes first pins 121, at least part of the first pins 121 is located in the interface cavity 1321a, the first pins 121 are limited in cooperation with the interface portion 1321, the first pins 121 are located at the inner side of the winding assembly 110 in the radial direction of the winding assembly 110, and at least part of the first pins 121 overlaps the winding assembly 110 in the axial direction of the winding assembly 110.

[0039] For the convenience of understanding, as shown in FIG. 2 and FIG. 8, the first pin 121 can be electrically connected with the wire harness, and the first pin 121 is generally in the shape of a needle to facilitate electrical connection with the common wire harness. The first pin 121 is limitedly connected with the bottom wall portion 1321b, and the bottom wall portion 1321b has a limiting hole 1321d, and part of the first pin 121 is located in the limiting hole 1321d, and the outer wall of the first pin 121 is limitedly connected with the inner wall forming the limiting hole 1321d, so that the wire harness can be limitedly connected with the interface portion 1321 and the first pin 121. Along the radial direction of the winding assembly 110, the first pin 121 is located on the inner side of the winding assembly 110, and along the axial direction of the winding assembly 110, part of the first pin 121 is arranged to overlap the winding assembly 110, that is, the projection of the first pin 121 on a radial direction of the winding assembly 110 partially overlaps the winding assembly 110, and the structure of the first pin 121 and the winding assembly 110 is compact, which is more conducive to reducing the size of the motor.

[0040] In a possible implementation, the connector assembly 120 includes a second pin 123, the second pin 123 is electrically connected with the first pin 121, the second pin 123 is electrically connected with the winding assembly 110, and the second pin 123 is limitedly connected with the winding assembly 110. Along the radial direction of the winding assembly 110, the second pin 123 is located on the outer side or the inner side of the winding assembly 110; along the axial direction of the winding assembly 110, at least part of the second pin 123 is arranged to overlap the winding assembly 110.

[0041] For the convenience of understanding, as shown in FIG. 4 and FIG. 8, the second pin 123 is electrically connected with the winding assembly 110 to facilitate assembly of the connector assembly 120 and the winding assembly 110. Along the radial direction of the winding assembly 110, the second pin 123 is located on the outer side of the winding assembly 110, and along the axial direction of the winding assembly 110, part of the second pin 123 is arranged to overlap the winding assembly 110, that is, the projection of the second pin 123 on a radial direction of the winding assembly 110 partially overlaps the winding assembly 110, and the structure of the second pin 123 and the winding assembly 110 is compact, which is more conducive to reducing the size of the motor.

[0042] In a possible implementation, the connector assembly 120 includes a first connecting segment 122, the first connecting segment 122 is electrically connected with the first pin 121, and the first connecting segment 122 and the first pin 121 are an integral structure or are limitedly connected; the first connecting segment 122 is electrically connected with the second pin 123, and the second connecting segment 142 and the second pin 123 are an integral structure or are limitedly connected; at least part of the first connecting segment 122 is located on the inner side of the winding assembly 110 or the first connecting segment 122 is located on one side of the winding assembly 110 in the axial direction.

[0043] For the convenience of understanding, as shown in FIG. 4, the current on the wire harness can be provided to the winding assembly 110 through the first pin 121, the first connecting segment 122 and the second pin 123. Considering the compact structure of the connector assembly 120 and the winding assembly 110, the first pin 121 and the first connecting segment 122 are limitedly matched, the first connecting segment 122 and the second pin 123 are limitedly matched, and the connector assembly 120 adopts a split structure, which facilitates the assembly of the connector assembly 120 and the winding assembly 110. The first connecting segment 122 is located on one side of the winding assembly 110 in the axial direction, and the first connecting segment 122 is arranged in abutment or clearance with the end wall of the winding assembly 110, which is more conducive to reducing the size of the motor.

[0044] In a possible implementation, the magnetic rotor 210 can rotate relative to the stator assembly 100, and the magnetic rotor 210 and the winding assembly 110 are arranged in sequence along the axial direction of the winding assembly 110, and the magnetic rotor 210 is located on one side of the winding assembly 110 in the axial direction. The winding assembly 110 includes the coil segment 1111, and the axial direction of the winding assembly 110 is parallel to the axial direction of the coil segment 1111.

[0045] For the convenience of understanding, as shown in FIG. 2, part of the interface part 1321 is located on one side of the winding assembly 110 in the axial direction, the interface cavity 1321a of the interface part 1321 is open to one side of the winding assembly 110 in the axial direction, and the wire harness can be limitedly matched with the interface part 1321 on one side of the winding assembly 110 in the axial direction. The magnetic rotor 210 is located on the other side of the winding assembly 110 in the axial direction, and the magnetic rotor 210 can rotate on the other side of the winding assembly 110 in the axial direction. Such a structural layout is more reasonable and is more conducive to reducing the size of the motor. The coil segment 1111 is substantially in the shape of a tube, specifically in the shape of a triangular tube, and the axial direction of the coil segment 1111 is consistent with the axial direction of the winding assembly 110. When the current passes through the coil segment 1111, the current can generate a changing magnetic field along the axial direction of the winding assembly 110, so as to drive the magnetic rotor 210 located on the other side of the winding assembly 110 in the axial direction.

[0046] In a possible implementation, the stator assembly 100 includes the stator core 150, and at least part of the stator core 150 is located on the inner side of the winding assembly 110 along the radial direction of the winding assembly 110. Along the axial direction of the winding assembly 110, at least part of the stator core 150 and the winding assembly 110 are arranged in overlap, i.e., the projection of the stator core 150 along one radial direction of the winding assembly 110 at least partially overlaps the winding assembly 110.

[0047] The stator assembly 100 includes the grounding assembly 140, and the grounding assembly 140 is electrically connected to the stator core 150. At least part of the grounding assembly 140 is located in the interface cavity 1321a.

[0048] For the convenience of understanding, as shown in FIG. 4 and FIG. 5, the winding assembly 110 includes windings 111, and the windings 111 are six, and the six windings 111 are two U-phase windings 111, two V-phase windings 111 and two W-phase windings 111 respectively. The winding 111 includes a coil segment 1111, and the coil segment 1111 is twelve, and each winding 111 includes two coil segments 1111. The stator core 150 includes a core portion 151, and the core portion 151 is twelve, and the twelve core portions 151 correspond to the twelve coil segments 1111 one by one, and the core portion 151 is located in the coil segment 1111 approximately, and the core portion 151 is approximately columnar, and the coil segment 1111 is approximately tubular, and the length direction of the core portion 151 and the axial direction of the coil segment 1111 are basically consistent, so that the core portion 151 is beneficial to guide the magnetic field to the magnetic rotor 210. Along the radial direction of the winding assembly 110, the stator core 150 is located at the inner side of the winding assembly 110 approximately, and along the axial direction of the winding assembly 110, the core portion 151 and the coil segment 1111 are arranged approximately overlapping, so that the structure of the stator core 150 and the winding assembly 110 is compact, and it is more beneficial to reduce the size of the motor.

[0049] The grounding assembly 140 is used for grounding the stator core 150, and part of the grounding assembly 140 is located in the interface cavity 1321a, and the grounding assembly 140 and the interface portion 1321 are limit fit, and along the radial direction of the winding assembly 110, part of the grounding assembly 140 is located at the inner side of the winding assembly 110, and along the axial direction of the winding assembly 110, part of the grounding assembly 140 and the winding assembly 110 are arranged overlapping, that is, the projection of the grounding assembly 140 along a radial direction of the winding assembly 110 partially overlaps the winding assembly 110, and the structure of the grounding assembly 140 and the winding assembly 110 is compact, and it is more beneficial to reduce the size of the motor. Part of the grounding assembly 140 is located at the axial side of the winding assembly 110 close to the connector assembly 120, which is more beneficial to improve the compactness of the structure.

[0050] The embodiment of the application also provides a stator assembly 100, which will be described in detail below in combination with FIG. 1 to FIG. 10. The stator assembly 100 can be used as part of the motor or the electric device 10. The stator assembly 100 includes the winding assembly 110, the connector assembly 120, the interface portion 1321, the grounding assembly 140 and the stator shell 130.

[0051] In a possible implementation, the winding assembly 110 is electrically connected to the connector assembly 120, and the winding assembly 110 and the interface portion 1321 are limit fit, and at least part of the interface portion 1321 is located in the winding assembly 110.

[0052] For the convenience of understanding, as shown in FIG. 2, part of the connector assembly 120 is located in the interface cavity 1321a of the interface portion 1321, the winding assembly 110 is approximately in the shape of a tube, the interface portion 1321 is approximately located in the winding assembly 110, and the interface portion 1321 utilizes the internal space of the winding assembly 110, thereby reducing the problem that the interface portion 1321 protrudes on the stator assembly 100, and further facilitating the reduction of the size of the stator assembly 100.

[0053] Along the radial direction of the winding assembly 110, the interface portion 1321 is located on the inner side of the winding assembly 110, and along the axial direction of the winding assembly 110, part of the interface portion 1321 and the winding assembly 110 are arranged in an overlapping manner. In this way, along the axial direction and the radial direction of the winding assembly 110, the structure of the interface portion 1321 and the winding assembly 110 is more compact, so that the interface portion 1321 fully utilizes the internal space of the winding assembly 110, thereby reducing the problem that the interface portion 1321 protrudes on the motor, and further facilitating the reduction of the size of the motor.

[0054] The winding assembly 110 has a central hole 112, the central hole 112 and the winding assembly 110 are coaxially arranged, and at least part of the interface portion 1321 is located in the central hole 112. Part of the connector assembly 120 is located in the central hole 112, which facilitates the assembly of the interface portion 1321 and the connector assembly 120.

[0055] In a possible implementation, the winding assembly 110 includes windings 111, and the windings 111 are at least three. The connector assembly 120 is at least three, and the at least three connector assemblies 120 are electrically connected to the at least three windings 111.

[0056] For the convenience of understanding, as shown in FIG. 4 and FIG. 5, the at least three windings 111 are three-phase windings 111, and the windings 111 are six. The six windings 111 form the winding assembly 110, and the six windings 111 are two U-phase windings 111, two V-phase windings 111, and two W-phase windings 111. The connector assembly 120 is three, and the three connector assemblies 120 are a U-phase connector assembly 120, a V-phase connector assembly 120, and a W-phase connector assembly 120. One U-phase connector assembly 120 is electrically connected to the two U-phase windings 111, one V-phase connector assembly 120 is electrically connected to the two V-phase windings 111, and one W-phase connector assembly 120 is electrically connected to the two W-phase windings 111. Such a design facilitates the improvement of the driving performance of the stator assembly 100.

[0057] In a possible implementation, the winding 111 includes a coil segment 1111, and the coil segment 1111 is at least three.

[0058] For the convenience of understanding, as shown in FIG. 5, the coil segments 1111 are twelve, each winding 111 includes two coil segments 1111, and the two coil segments 1111 of each winding 111 can be wound by the same or the same group of enameled wire, the twelve coil segments 1111 are sequentially arranged around the axial direction of the center hole 112, the twelve coil segments 1111 are arranged in a circle, the twelve coil segments 1111 enclose the center hole 112, and the center hole 112 is substantially a circular hole. The coil segment 1111 is substantially in the shape of a tube, including but not limited to at least one of a triangular tube, a circular tube, and a square tube. According to the arrangement mode of the coil segment 1111, the winding assembly 110 includes three different arrangement forms: in the first arrangement form of the winding assembly 110, the axial direction of the coil segment 1111 is consistent with the axial direction of the center hole 112, the coil segment 1111 and the winding assembly 110 are coaxially arranged, and at least two coil segments 1111 are sequentially arranged along the axial direction of the center hole 112. This kind of winding assembly 110 is also called a stator of a stepper motor, and can be used as part of an electric valve. For the specific structure, reference can be made to the electric valve with publication number "CN109424777A". In the second arrangement form of the winding assembly 110, the axial direction of the coil segment 1111 is perpendicular to the axial direction of the winding assembly 110, and at least two coil segments 1111 are sequentially arranged around the axial direction of the center hole 112. This kind of winding assembly 110 is also called a stator of a radial flux motor, and can be used as part of an electric pump. For the specific structure, reference can be made to the electric pump with publication number "CN117674458A". As shown in FIGS. 4 and 5, in the third arrangement form of the winding assembly 110, the coil segment 1111 is substantially in the shape of a triangular tube, the axial direction of the coil segment 1111 is parallel to the axial direction of the winding assembly 110, and at least two coil segments 1111 are sequentially arranged around the axial direction of the winding assembly 110. This kind of winding assembly 110 is also called a winding assembly 110 of an axial flux motor, and can also be used as part of an electric pump.

[0059] As shown in FIGS. 4 and 5, the axial direction of the coil segment 1111 is parallel to the axial direction of the winding assembly 110, and when the coil segment 1111 is energized, a varying magnetic field along the axial direction of the center hole 112 can be generated, which can drive the magnetic rotor 210 in the axial direction of the winding assembly 110. In this way, the magnetic rotor 210 can not be placed in the center hole 112, which is conducive to the use of the space of the center hole 112 by the interface part 1321 and the connector assembly 120. Compared with the radial flux motor and the axial flux motor of the same size, the axial flux motor has higher driving performance, and the center hole 112 can be completely used for placing the interface part 1321 and the connector assembly 120, which is more conducive to reducing the problem of additional space occupied by the interface part 1321 and the connector assembly 120, and further conducive to reducing the size of the stator assembly 100 and the motor.

[0060] In a possible implementation, the connector assembly 120 includes first pins 121, the first pins 121 are in position-limiting cooperation with the interface portion 1321, at least part of the first pins 121 is located in the interface cavity 1321a, the first pins 121 are at least three, the length directions of the at least three first pins 121 are parallel to the axial direction of the winding assembly 110, the at least three first pins 121 are arranged along the radial direction of the winding assembly 110, and at least two of the first pins 121 are arranged in sequence; at least part of the at least three first pins 121 is located in the central hole 112 of the winding assembly 110.

[0061] For the convenience of understanding, as shown in FIG. 4 and FIG. 5, the first pins 121 are three, and the three first pins 121 are arranged in a row, which is beneficial to the compact structure of the three first pins 121, and is further beneficial to reducing the size of the stator assembly 100.

[0062] In a possible implementation, the stator assembly 100 includes a stator core 150, the stator core 150 includes core portions 151, the core portions 151 are at least three, the axial directions of the at least three core portions 151 are parallel to the axial direction of the winding assembly 110, and the at least three core portions 151 are arranged in sequence around the axial direction of the winding assembly 110; the stator assembly 100 includes insulating frames 160, the insulating frames 160 are at least three, the at least three insulating frames 160 are in position-limiting cooperation with the at least three core portions 151, and the at least three insulating frames 160 are arranged in sequence around the axial direction of the winding assembly 110; the at least three coil segments 1111 are in position-limiting cooperation with the at least three insulating frames 160.

[0063] For the convenience of understanding, as shown in FIG. 5, the core 151 is twelve, the core 151 is roughly in the shape of a triangular prism, the axial direction of the core 151 is the length direction of the core 151, the twelve cores 151 are arranged in sequence around the axial direction of the winding assembly 110, and the twelve cores 151 are arranged in a circle. The insulating framework 160 is twelve, the insulating framework 160 is roughly in the shape of a triangular tube, the axial direction of the insulating framework 160 is parallel to the axial direction of the center hole 112, the twelve insulating frameworks 160 are arranged in sequence around the axial direction of the center hole 112, the twelve insulating frameworks 160 are arranged in a circle, the twelve insulating frameworks 160 correspond to the twelve cores 151 one by one, the core 151 is located in the insulating framework 160 which limits and cooperates with it, and the outer peripheral wall of the core 151 and the inner peripheral wall of the insulating framework 160 limit and cooperate. The twelve insulating frameworks 160 also correspond to the twelve coil sections 1111 one by one, part of the insulating framework 160 is located in the coil section 1111 which limits and cooperates with it, the enameled wire of the coil section 1111 is in a state of tension, and the outer peripheral wall of the insulating framework 160 and the inner peripheral wall of the coil section 1111 limit and cooperate. At least part of the core 151 is located in the coil section 1111, the core 151 can improve the electromagnetic performance of the coil section 1111, the coil section 1111 is away from the core 151 relative to the insulating framework 160, so as to avoid direct contact between the coil section 1111 and the core 151, which is conducive to improving the safety performance of the stator assembly 100.

[0064] In a possible implementation, the connector assembly 120 includes second pins 123, the second pins 123 are at least three, the winding 111 includes tap sections 1112, the tap sections 1112 are at least three, the at least three second pins 123 are electrically connected to the at least three tap sections 1112, the electrically connected second pins 123 and tap sections 1112 limit and cooperate, and the at least three tap sections 1112 are electrically connected to the at least three coil sections 1111; along the radial direction of the winding assembly 110, the second pins 123 are located on the inner side or the outer side of the winding assembly 110, and the at least three second pins 123 are arranged in sequence around the axial direction of the center hole 112.

[0065] For the convenience of understanding, as shown in FIG. 4, the winding assembly 110 is roughly in the shape of a cylinder, when the hole diameter of the center hole 112 is small and only the space is allowed to put the connector assembly 120 and the grounding assembly 140, the second pins 123 are roughly located on the radial outer side of the winding assembly 110, the plurality of second pins 123 are arranged in sequence around the axial direction of the center hole 112, the second pins 123 are next to the outer side of the coil section 1111 which is electrically connected thereto, the length of the tap section 1112 between the second pin 123 and the coil section 1111 is small, which is more conducive to improving the compactness of the structure of the second pin 123 and the winding assembly 110, and further conducive to reducing the size of the stator assembly 100.

[0066] When the diameter of the central hole 112 is large enough to accommodate the connector assembly 120, the grounding assembly 140, and the second pin 123, the second pin 123 is approximately located in the central hole 112. Multiple second pins 123 are arranged sequentially around the axial direction of the central hole 112. The second pin 123 is close to the inner side of the coil segment 1111 that is electrically connected to it. The tap segment 1112 between the second pin 123 and the coil segment 1111 is relatively short. This is beneficial to the structural compactness of the second pin 123 and the winding assembly 110, and thus helps to reduce the size of the stator assembly 100.

[0067] In one possible implementation, the connector assembly 120 includes at least three first connecting segments 122, at least three first pins 121 electrically connected to at least three first connecting segments 122, the electrically connected first pins 121 and the first connecting segments 122 being an integral structure or a limiting fit; at least three second pins 123 electrically connected to at least three first connecting segments 122, the electrically connected second pins 123 and the first connecting segments 122 being an integral structure or a limiting fit.

[0068] For ease of understanding, as shown in Figure 4, the first pin 121 and the second pin 123 are located at different positions. The first connecting segment 122 extends from the first pin 121 to the second pin 123, and the first pin 121 and the second pin 123 are electrically connected through the first connecting segment 122. The first pin 121 extends from the first connecting segment 122, which is electrically connected to it, to one side of the axial direction of the winding assembly 110. The second pin 123 extends from the first connecting segment 122, which is electrically connected to it, to one side of the axial direction of the winding assembly 110. The cross-sections of the electrically connected first pin 121, the connecting segment, and the second pin 123 are approximately "U"-shaped and are wrapped around the coil segment 1111. This is more conducive to improving the structural compactness of the connector assembly 120 and the winding assembly 110, and thus more conducive to reducing the size of the stator assembly 100.

[0069] The first pin 121 and the first connecting segment 122 are mutually limitingly engaged, and the second pin 123 and the first connecting segment 122 are also mutually limitingly engaged. The first pin 121, the second pin 123, and the first connecting segment 122 can be assembled separately, which helps to improve the ease of assembly operations. The limiting engagement structure between the first pin 121 and the first connecting segment 122 is a plug-in structure, and the limiting engagement structure between the second pin 123 and the first connecting segment 122 is also a plug-in structure. The first connecting segment 122 has a first receiving portion 1221 and a second receiving portion 1222. Part of the first pin 121 is located inside the first receiving portion 1221, and the outer wall of the first pin 121 is mutually limitingly engaged with the inner wall of the first receiving portion 1221. Part of the second pin 123 is located in the second receiving portion 1222, and the outer wall of the second pin 123 is mutually limitingly engaged with the inner wall of the second receiving portion 1222.

[0070] In addition, the connector assembly 120 can also be a one-piece structure, the first pin 121, the first connecting segment 122 and the second pin 123 can be a one-piece, which reduces the number of parts, and thus facilitates simplifying the assembly operation. The one-piece first pin 121, the first connecting segment 122 and the second pin 123 can be made by stamping process.

[0071] In a possible implementation, the connector assembly 120 has at least three limiting and fitting interfaces 1321, at least a portion of the at least three first pins 121 is located in the interface 1321, and at least a portion of the interface 1321 is located in the central hole 112; at least one of the first pin 121, the first connecting segment 122 and the second pin 123 is the fitting interface 1321.

[0072] For ease of understanding, as shown in FIG. 2, a portion of the three first pins 121 is located in the interface 1321, and when the wire harness of the thermal management device is electrically fitted with the three first pins 121, the wire harness also limits and fits the interface 1321, and the interface 1321 can improve the firmness of the fitting between the wire harness and the three first pins 121.

[0073] In a possible implementation, the interface 1321 includes a peripheral wall portion 1321c and a bottom wall portion 1321b, the peripheral wall portion 1321c is located in the winding assembly 110, at least a portion of the peripheral wall portion 1321c is located in the winding assembly 110, and the peripheral wall portion 1321c extends from the bottom wall portion 1321b to an axial side of the winding assembly 110.

[0074] For ease of understanding, as shown in FIG. 6, the bottom wall portion 1321b is substantially a planar wall, and the peripheral wall portion 1321c is substantially a tubular wall. In the radial direction of the winding assembly 110, the bottom wall portion 1321b is located on the inner side of the winding assembly 110; in the axial direction of the winding assembly 110, the bottom wall portion 1321b and the winding assembly 110 are arranged in an overlapping manner, so that the structure of the bottom wall portion 1321b and the winding assembly 110 is compact, which is more conducive to reducing the size of the stator assembly 100. In the radial direction of the winding assembly 110, the peripheral wall portion 1321c is located on the inner side of the winding assembly 110; in the axial direction of the winding assembly 110, a portion of the peripheral wall portion 1321c and the winding assembly 110 are arranged in an overlapping manner, so that the structure of the peripheral wall portion 1321c and the winding assembly 110 is compact, which is more conducive to reducing the size of the stator assembly 100. Specifically, the bottom wall portion 1321b is located in the central hole 112, and a portion of the peripheral wall portion 1321c is located in the central hole 112.

[0075] Three first pins 121 and the bottom wall 1321b are in position-limiting cooperation. The bottom wall 1321b has four position-limiting holes 1321d, and the three first pins 121 pass through the three position-limiting holes 1321d respectively. At least part of the first pins 121 is located in the position-limiting hole 1321d, and the outer wall of the first pin 121 and the inner wall forming the position-limiting hole 1321d are in position-limiting cooperation, so as to facilitate the position-limiting cooperation of the wire harness, the first pin 121 and the interface part 1321.

[0076] In a possible implementation, at least part of the winding assembly 110 is located in the stator shell 130, the stator shell 130 and the connector assembly 120 are in position-limiting cooperation, and the stator shell 130 includes a first end cover 132 located on one axial side of the central hole 112. The first end cover 132 and the interface part 1321 are in one-piece structure or position-limiting cooperation.

[0077] For ease of understanding, as shown in FIG. 7, the stator shell 130 includes a position-limiting cooperation cylinder 131 and a first end cover 132. The cylinder 131 is in a cylindrical shape, and includes a large-diameter section 1311 and a small-diameter section 1312. The hole diameter of the large-diameter section 1311 is larger than that of the small-diameter section 1312. The large-diameter section 1311, the small-diameter section 1312 and the winding assembly 110 are coaxially arranged. Part of the winding assembly 110 is located in the small-diameter section 1312. The outer side wall of the base 152 and the inner side wall forming the small-diameter section 1312 are in position-limiting cooperation. The cylinder 131 includes a position-limiting part 1313. At least part of the position-limiting part 1313 is located in the large-diameter section 1311. The second pin 123 and the position-limiting part 1313 are in position-limiting cooperation.

[0078] The first end cover 132 is located on one axial side of the winding assembly 110, and the first connecting section 122 is located on the other axial side of the winding assembly 110. The first connecting section 122 and the first end cover 132 are respectively located on the two axial sides of the cylinder 131. The first end cover 132 and the interface part 1321 are in one-piece structure. Such a layout is more reasonable and is more conducive to reducing the size of the stator assembly 100.

[0079] In a possible implementation, the stator assembly 100 includes a grounding assembly 140 electrically connected to the stator core 150. The grounding assembly 140 includes a first grounding pin 141. The length direction of the first grounding pin 141 is parallel to the axial direction of the winding assembly 110, and the first grounding pin 141 is arranged along the radial direction of the winding assembly 110. The first grounding pin 141 and the first pin 121 are arranged in sequence. At least part of the first grounding pin 141 is located in the interface cavity 1321a of the interface part 1321.

[0080] For the convenience of understanding, as shown in FIG. 1 and FIG. 8, the first grounding pin 141 is in the shape of a needle, and the first grounding pin 141 and the three first pins 121 are arranged in sequence along the radial direction of the winding assembly 110. The first grounding pin 141 and the three first pins 121 are arranged side by side, and part of the first grounding pin 141 is located in the interface cavity 1321a. Along the radial direction of the winding assembly 110, the first grounding pin 141 is located on the inner side of the winding assembly 110; along the axial direction of the winding assembly 110, part of the first grounding pin 141 is arranged in an overlapping manner with the winding assembly 110, and the structure of the grounding assembly 140 and the winding assembly 110 is compact, thereby being more conducive to reducing the size of the stator assembly 100.

[0081] In a possible implementation, the stator core 150 includes a base 152, and the base 152 and the winding assembly 110 are arranged in sequence along the axial direction of the winding assembly 110. The base 152 and at least three core portions 151 are in an integrated structure or a limiting fit. The grounding assembly 140 includes a second grounding pin 143, and the length direction of the second grounding pin 143 is parallel to the axial direction of the winding assembly 110. The second grounding pin 143 is in a limiting fit with the base 152, and along the radial direction of the winding assembly 110, the second grounding pin 143 is located on the outer side or the inner side of the winding assembly 110. The number of the second grounding pin 143 is less than the number of the core portion 151.

[0082] For the convenience of understanding, as shown in FIG. 5, the base 152 and at least two core portions 151 are in an integrated structure, and the base 152 is in the shape of a substantially circular ring. The at least two core portions 151 are located on one side of the axial direction of the base 152. The base 152 and the winding assembly 110 are coaxially arranged, and along the axial direction of the winding assembly 110, the base 152, the winding assembly 110 and the first connecting segment 122 are arranged in sequence. Along the radial direction of the winding assembly 110, the second grounding pin 143 is located on the outer side of the winding assembly 110. The limiting fit structure of the second grounding pin 143 and the base 152 is a plug-in structure. In this way, the structure of the second grounding pin 143 and the winding assembly 110 is compact, and it is more conducive to reducing the size of the stator assembly 100.

[0083] In a possible implementation, the grounding assembly 140 further includes a second connecting segment 142, and the second connecting segment 142 and the first grounding pin 141 are in an integrated structure or a limiting fit. The second connecting segment 142 and the second grounding pin 143 are in an integrated structure or a limiting fit, and the first grounding pin 141 is electrically connected to the second grounding pin 143 through the second connecting segment 142. Along the axial direction of the winding assembly 110, the second connecting segment 142 and the first connecting segment 122 can be located on the same side of the winding assembly 110.

[0084] For the convenience of understanding, as shown in FIG. 9, the second connecting section 142 includes a third accommodating portion 1421 and a fourth accommodating portion 1422, part of the first grounding pin 141 is located in the third accommodating portion 1421, the outer wall of the first grounding pin 141 and the inner wall of the third accommodating portion 1421 limit fit, part of the second grounding pin 143 is located in the fourth accommodating portion 1422, the outer wall of the second grounding pin 143 and the inner wall of the fourth accommodating portion 1422 limit fit, so as to facilitate the assembly of the first grounding pin 141, the second grounding pin 143 and the second connecting section 142 respectively.

[0085] The first grounding pin 141 limit fits with the bottom wall portion 1321b, the first grounding pin 141 is provided in the limiting hole 1321d, part of the first grounding pin 141 is located in the limiting hole 1321d, the outer wall of the first grounding pin 141 and the inner wall of the limiting hole 1321d limit fit.

[0086] In summary, the winding assembly 110 is part of the axial flux motor, the central hole 112 can not be placed in the rotor, the first pin 121, the first grounding pin 141 and the interface portion 1321 are basically located in the central hole 112, and the outer space of the winding assembly 110 can not be additionally occupied, the space of the central hole 112 is fully utilized, so that the structure of the stator assembly 100 is more compact, which is beneficial to reduce the size of the stator assembly 100.

[0087] The embodiment of the application also provides an electric device 10, which will be described in detail below in combination with FIGS. 1 to 10. The electric device 10 includes a fluid assembly 200 and a stator assembly 100. The fluid assembly 200 includes an execution component 220 and a magnetic rotor 210. The magnetic rotor 210 and the stator assembly 100 can constitute a motor. The stator assembly 100 includes a winding assembly 110, a connector assembly 120, an interface portion 1321 and a stator shell 130.

[0088] In a possible implementation, the winding assembly 110 is electrically connected to the connector assembly 120, part of the connector assembly 120 is located in the interface cavity 1321a of the interface portion 1321, at least part of the interface portion 1321 is located on the inner side of the winding assembly 110 along the radial direction of the winding assembly 110; at least part of the interface portion 1321 and the winding assembly 110 are arranged in overlap along the axial direction of the winding assembly 110; the fluid assembly 200 includes the execution component 220, the execution component 220 is a vane or a valve core, the execution component 220 limit fits with the magnetic rotor 210, and the execution component 220 and the magnetic rotor 210 can rotate relative to the stator assembly 100.

[0089] For ease of understanding, as shown in FIG. 2, the actuating component 220 and the magnetic rotor 210 are of an integral structure. The actuating component 220 is an impeller, and the electric device 10 can also be referred to as an electric pump. The fluid component 200 and the stator component 100 are in limiting cooperation.

[0090] In a possible implementation manner, the plug-in component 120 includes a first pin 121, a first connection section 122, and a second pin 123. The first pin 121 is electrically connected to the first connection section 122, and the first connection section 122 is electrically connected to the second pin 123. At least part of the first pin 121 is located in the interface cavity 1321a; along the radial direction of the winding component 110, the first pin 121 is located inside the winding component 110, the second pin 123 is located outside the winding component 110, and part of the first connection section 122 is located inside the winding component 110; along the axial direction of the winding component 110, part of the first pin 121 and the winding component 110 are overlapped, part of the second pin 123 and the winding component 110 are overlapped, and the first connection section 122 and the winding component 110 are arranged in sequence.

[0091] For ease of understanding, as shown in FIGS. 4 and 8, the first pin 121, the first connection section 122, and the second pin 123 are generally in a "冂" shape, generally surrounding part of the winding component 110. The structure of the plug-in component 120 and the winding component 110 is compact, which is more conducive to reducing the size of the electric device 10.

[0092] In a possible implementation manner, the fluid component 200 includes a pump housing 230. The pump housing 230 has a first inlet / outlet 233 and a second inlet / outlet 232. At least one of the magnetic rotor 210 and the actuating component 220 is rotationally mated with the pump housing 230, and the magnetic rotor 210 and the actuating component 220 are located inside the pump housing 230; along the axial direction of the winding component 110, the pump housing 230 is located on one side of the winding component 110, the first connection section 122 and the pump housing 230 are in limiting cooperation, and the first pin 121 and the interface portion 1321 are in limiting cooperation.

[0093] For ease of understanding, as shown in FIG. 2, the magnetic rotor 210 and the actuating component 220 are located inside the pump housing 230, and the magnetic rotor 210 and the actuating component 220 can rotate inside the pump housing 230, so as to drive the fluid flow inside the pump housing 230 and realize the control of the fluid.

[0094] The first pin 121 and the second pin 123 extend from the first connecting segment 122 to one axial side of the winding assembly 110, and part of the wire harness can be positioned at the one axial side of the winding assembly 110 in abutment with the interface portion 1321 and the first pin 121, and the pump shell 230 is positioned at the other axial side of the winding assembly 110, so that the position of the wire harness and the pump shell 230 is avoided from interfering. The first connecting segment 122 is in abutment with the pump shell 230, the first connecting segment 122 is positioned at the outer wall of the pump shell 230, and the fluid can flow through the inner wall of the pump shell 230, so that the fluid can absorb the heat of the connector assembly 120 and the winding assembly 110 through the pump shell 230, which is conducive to heat dissipation of the connector assembly 120 and the winding assembly 110, and further improves the working reliability of the electric device 10.

[0095] Further, the abutment mode of the first connecting segment 122 and the pump shell 230 includes but is not limited to at least one of printing, electroplating, and film coating. As shown in FIGS. 2-4, the pump shell 230 includes a partition portion 231, the first connecting segment 122 is a copper strip, and the first connecting segment 122 is in abutment with the outer wall of the partition portion 231 by electroplating, so that the abutment of the first connecting segment 122 and the pump shell 230 is improved. Furthermore, the first connecting segment 122 is in abutment with or has a gap from the end wall of the winding assembly 110, which is more conducive to improving the compactness of the pump shaft.

[0096] Further, the abutment structure of the first pin 121 and the first connecting segment 122 includes a spring terminal, and the abutment structure of the second pin 123 and the first connecting segment 122 also includes a spring terminal.

[0097] For ease of understanding, as shown in FIGS. 8 and 9, the first connecting segment 122 includes a spring terminal, the spring terminal is in abutment with the first pin 121; the second pin 123 includes another spring terminal, the spring terminal is a fish-eye terminal, and the spring terminal is in abutment with the first connecting segment 122. Considering that the electric device 10 can generate vibration along the axial direction of the winding assembly 110, the above-mentioned spring connection structure is adopted, which improves the electrical connection yield of the first pin 121 and the first connecting segment 122 and the electrical connection yield of the second pin 123 and the second connecting segment 142, and reduces the problem of poor contact.

[0098] Further, along the axial direction of the winding assembly 110, the fluid assembly 200 and the interface portion 1321 are arranged in sequence, the fluid assembly 200 and the interface portion 1321 are arranged with a gap, and the fluid assembly 200 and the first connecting segment 122 are also arranged in sequence, and the fluid assembly 200 and the first connecting segment 122 are also arranged with a gap. Such arrangement can also reduce the problem that the vibration of the fluid assembly 200 affects the electrical connection of the connector assembly 120.

[0099] Further, along the axial direction of the winding assembly 110, the magnetic rotor 210 and the first pin 121 are arranged in sequence, and the magnetic rotor 210 and the first pin 121 are compact in structure, which is more conducive to reducing the size of the electric device 10.

[0100] Further, along the axial direction of the winding assembly 110, the magnetic rotor 210, the first connecting segment 122 and the winding assembly 110 are arranged in sequence, and the above arrangement structure is more compact, which is more conducive to reducing the size of the electric device 10.

[0101] Further, the winding assembly 110 is located in a housing accommodating cavity of the motor, the housing of the motor includes a pump body and a first end cover 132, the pump body includes a pump shell 230 and a partition 231, the pump body and the first end cover 132 cooperate to form the accommodating cavity of the housing, and the interface portion 1321 is recessed from the first end cover 132 into the accommodating cavity of the housing.

[0102] The electric device 10 described above can be part of a thermal management device, and the thermal management device can be part of a vehicle, including but not limited to a new energy vehicle (also known as an electric vehicle). Due to the miniaturization of the electric device 10, the application of the above-mentioned thermal management device on the vehicle has a significant effect on saving the internal space of the vehicle, reducing the energy consumption of the vehicle, and improving the driving space. For example, when designing a vehicle, the above-mentioned thermal management device can greatly reduce the occupation of the internal space of the vehicle. The extra space can bring diversified interior space design, which can either be given to the power battery to improve the cruising range, or can leave more space for passengers or a trunk, or even change the function of the vehicle to meet diversified vehicle needs.

[0103] Those skilled in the art will appreciate that the technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but it should be considered that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0104] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the technical solutions shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric machine characterized in that, The stator assembly (100) comprises a winding assembly (110), a connector assembly (120) and an interface part (1321), the winding assembly (110) is electrically connected with the connector assembly (120), part of the connector assembly (120) is located in an interface cavity (1321a) of the interface part (1321), the winding assembly (110) has a central hole (112), at least part of the interface cavity (1321a) is located in the central hole (112), along the radial direction of the winding assembly (110), at least part of the interface part (1321) is located on the inner side of the winding assembly (110); along the axial direction of the winding assembly (110), at least part of the interface part (1321) and the winding assembly (110) are arranged in an overlapping manner.

2. The electric machine of claim 1, wherein, The inner wall forming the interface cavity (1321a) comprises a bottom wall part (1321b), the connector assembly (120) and the bottom wall part (1321b) are limitedly matched, along the radial direction of the winding assembly (110), the bottom wall part (1321b) is located on the inner side of the winding assembly (110); along the axial direction of the winding assembly (110), the bottom wall part (1321b) and the winding assembly (110) are arranged in an overlapping manner.

3. The electric machine of claim 2, wherein, The bottom wall part (1321b) has a limiting hole (1321d), part of the connector assembly (120) is located in the limiting hole (1321d), the outer peripheral wall of the connector assembly (120) is limitedly matched with the inner wall forming the limiting hole (1321d).

4. The electric machine of claim 1, wherein, The inner wall forming the interface cavity (1321a) comprises a bottom wall part (1321b), the bottom wall part (1321b) of the interface part (1321) is insert injection molded with the connector assembly (120), along the radial direction of the winding assembly (110), the bottom wall part (1321b) is located on the inner side of the winding assembly (110); along the axial direction of the winding assembly (110), the bottom wall part (1321b) and the winding assembly (110) are arranged in an overlapping manner.

5. The electric machine of any of claims 2 to 4, characterized by The inner wall forming the interface cavity (1321a) comprises a peripheral wall part (1321c), along the radial direction of the winding assembly (110), the peripheral wall part (1321c) is located on the inner side of the winding assembly (110); along the axial direction of the winding assembly (110), at least part of the peripheral wall part (1321c) and the winding assembly (110) are arranged in an overlapping manner; the peripheral wall part (1321c) extends from the bottom wall part (1321b) to one side of the axial direction of the winding assembly (110).

6. The electric machine of claim 5, wherein, The connector assembly (120) is electrically connected with the connector of the wire harness, the connector of the wire harness is located in the interface cavity (1321a), the connector of the wire harness is limitedly matched in the bottom wall part (1321b) and the peripheral wall part (1321c).

7. The electric machine of claim 6, wherein, A seal is arranged between the peripheral wall portion (1321c) and the connector of the wire harness, and the seal is in a compressed state; the peripheral wall portion (1321c) comprises a seal ring mounting portion (1321e), and the seal is limited and fitted in the seal ring mounting portion (1321e), or the connector of the wire harness comprises a seal ring accommodating portion, and the seal is limited and fitted in the seal ring accommodating portion.

8. The electric machine of any one of claims 1 to 7, characterized by The connector assembly (120) comprises a first pin (121), at least part of the first pin (121) is located in the interface cavity (1321a), the first pin (121) and the interface portion (1321) are limited and fitted, along the radial direction of the winding assembly (110), the first pin (121) is located on the inner side of the winding assembly (110); along the axial direction of the winding assembly (110), at least part of the first pin (121) and the winding assembly (110) are arranged in overlap.

9. The electric machine of claim 8, wherein, The connector assembly (120) comprises a second pin (123), the second pin (123) is electrically connected with the first pin (121), the second pin (123) is electrically connected with the winding assembly (110), the tap section (1112) of the winding assembly (110) is limited and arranged in the second pin (123), the second pin (123) and the winding assembly (110) are limited and fitted, along the radial direction of the winding assembly (110), the second pin (123) is located on the outer side of the winding assembly (110); along the axial direction of the winding assembly (110), at least part of the second pin (123) and the winding assembly (110) are arranged in overlap.

10. The electric machine of claim 9, wherein, The connector assembly (120) comprises a first connecting section (122), the first connecting section (122) is electrically connected with the first pin (121), and the first connecting section (122) and the first pin (121) are an integral structure or are limited and fitted; the first connecting section (122) is electrically connected with the second pin (123), and the second connecting section (142) and the second pin (123) are an integral structure or are limited and fitted; at least part of the first connecting section (122) is located on the inner side of the winding assembly (110) or at least part of the first connecting section (122) is located on the axial side of the winding assembly (110).

11. The electric machine of claim 10, wherein, The motor comprises a magnetic rotor (210), the magnetic rotor (210) can rotate relative to the stator assembly (100), the magnetic rotor (210) is located on the axial side of the winding assembly (110), and at least part of the first connecting section (122) is located between the magnetic rotor (210) and the winding assembly (110).

12. The electric machine of any one of claims 1 to 11, characterized by The stator assembly (100) includes a grounding assembly (140) and a stator core (150), the grounding assembly (140) is electrically connected to the stator core (150), at least part of the grounding assembly (140) is located in the interface cavity (1321a), at least part of the grounding assembly (140) is located on the inner side of the winding assembly (110), the winding assembly (110) is located in the housing accommodating cavity of the motor, the housing of the motor includes a pump body and a first end cover (132), the pump body and the first end cover (132) cooperate to form the accommodating cavity, and the interface part (1321) is recessed from the first end cover (132) towards the accommodating cavity.

13. An electrically powered device, characterized in that The motor includes a motor and an execution component (220); the motor includes a stator assembly (100) and a magnetic rotor (210), the stator assembly (100) includes a winding assembly (110), a connector assembly (120) and an interface part (1321), the winding assembly (110) is electrically connected to the connector assembly (120), part of the connector assembly (120) is located in the interface cavity (1321a) of the interface part (1321), the winding assembly (110) has a center hole (112), at least part of the interface part (1321a) is located in the center hole (112), at least part of the interface part (1321) is located on the inner side of the winding assembly (110) along the radial direction of the winding assembly (110); at least part of the interface part (1321) and the winding assembly (110) are arranged in overlap along the axial direction of the winding assembly (110); the execution component (220) includes an impeller or a valve core, the execution component (220) and the magnetic rotor (210) are limitedly matched, and the execution component (220) and the magnetic rotor (210) can rotate relative to the stator assembly (100).

14. The electrically powered device of claim 13, wherein, The connector assembly (120) includes a first pin (121), a first connecting section (122) and a second pin (123), the first pin (121) is electrically connected to the first connecting section (122), the first connecting section (122) is electrically connected to the second pin (123), and at least part of the first pin (121) is located in the interface cavity (1321a); the second pin (123) is located on the outer side of the winding assembly (110), part of the first pin (121) and the winding assembly (110) are arranged in overlap along the axial direction of the winding assembly (110), at least part of the first connecting section (122) is located on the axial side of the winding assembly (110) close to the magnetic rotor (210), the winding assembly (110) is located in the housing accommodating cavity of the motor, the housing of the motor includes a pump body and a first end cover (132), the pump body and the first end cover (132) cooperate to form the accommodating cavity, and the interface part (1321) is recessed from the first end cover (132) towards the accommodating cavity.

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