Electrical machine and connection device for connecting stator wires of electrical machine

Abstract

The invention discloses a connection device for connection of stator wires of an electric machine. The connecting device comprises: a support plate comprising a chamber; a lower slot configured to receive a first stator wire at an end portion of the lower slot, and an upper slot configured to receive a second stator wire at an end portion of the upper slot, the first stator wire and the second stator wire are arranged up and down in the cavity; and a magnetic mating member configured to cut insulators of the first stator wire and the second stator wire and connect the first stator wire and the second stator wire in the vertical layout. The design of the lower slots and the upper slots of the connection device improves the reliability of the connection of the stator wires for the electric machine.

Description

Technical Field

[0001] The present invention relates to the field of electric machines, and more particularly to an electric machine and a connection device for connection of stator wires of the electric machine. Background Art

[0002] Generally, a motor is a device that obtains rotational power by converting electrical energy into mechanical energy, and the motor includes a stator and a rotor. The motor is formed by an electromagnetic field generated when current flows through the stator. The torque is generated so that the motor rotates, and the rotational force of the rotor is transmitted to the rotating shaft, and the rotating shaft drives the load. For example, when used in a washing machine, the rotating shaft is connected to the drum of the washing machine to drive the drum.

[0003] On the other hand, the stator of the motor connected to the stator wire is connected to the internal power line from the outside to supply power to the stator wire, wherein the connector as the medium is called a mag mate. The support plate is used to support the stator wire to be connected and the mag mate. Summary of the invention

[0004] In view of the above, embodiments of the present invention disclose a motor and a connection device for connection of stator wires of the motor, thereby ensuring an up-and-down layout of stator wires to be connected and improving reliability of connection of stator wires for the motor.

[0005] According to an embodiment of the present invention, a connection device for connecting a stator wire of a motor is disclosed. The connection device comprises:

[0006] a support plate comprising a chamber; a lower slot and an upper slot, wherein the lower slot is configured to accommodate a first stator wire and the first stator wire is located at an end portion of the lower slot, the upper slot is configured to accommodate a second stator wire and the second stator wire is located at an end portion of the upper slot, and the first stator wire and the second stator wire have an upper and lower layout in the chamber; and

[0007] A magnetic fitting is configured to cut through the insulators of the first stator wire and the second stator wire and connect the first stator wire and the second stator wire in the up-and-down arrangement.

[0008] According to an embodiment of the present invention, a motor is disclosed. The motor comprises:

[0009] a stator core configured to house the stator windings in place;

[0010] a housing configured to house the stator assembly;

[0011] a support plate comprising a chamber; a lower slot and an upper slot, wherein the lower slot is configured to accommodate a first stator wire and the first stator wire is located at an end portion of the lower slot, the upper slot is configured to accommodate a second stator wire and the second stator wire is located at an end portion of the upper slot, and the first stator wire and the second stator wire have an upper and lower layout in the chamber; and

[0012] A magnetic fitting is configured to cut through the insulators of the first stator wire and the second stator wire and connect the first stator wire and the second stator wire in the up-and-down arrangement.

[0013] As can be seen from the above, the double slot design ensures the up-and-down layout of the first stator wire and the second stator wire to be connected. Specifically, the lower slot is configured to accommodate the first stator wire and the first stator wire is located at the end portion of the lower slot, and the upper slot is configured to accommodate the second stator wire and the second stator wire is located at the end portion of the upper slot. Therefore, the ends of the two slots can accommodate the first stator wire and the second stator wire, respectively, and keep the first stator wire and the second stator wire in an up-and-down layout. This double slot design improves the reliability of the connection of the stator wires used for the motor.

[0014] According to an embodiment of the present invention, the width of the end portion of the lower slot and the end portion of the upper slot is the maximum diameter of the stator wire for a series of motors. The connecting device is suitable for connecting a series of stator wires with different diameters, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above-mentioned characteristics, technical features, advantages and implementation schemes of the present invention will be further described in a clear and easy-to-understand manner by describing preferred embodiments in conjunction with the accompanying drawings, in which:

[0016] Figure 1 FIG. 1 is a top perspective view of an exemplary application scenario of an embodiment of the present invention.

[0017] Figure 2 is an example application scenario of the embodiments of the V-groove design described in this article.

[0018] Figure 3 is another embodiment of the V-groove design and an example of a magnetic mating member described herein.

[0019] Figure 4 is an embodiment of the connecting device of the present invention.

[0020] Figure 5 It is another embodiment of the connecting device of the present invention.

[0021] Figure 6 It is another embodiment of the connecting device of the present invention.

[0022] Figure 7 is another embodiment of the connection device of the present invention in an electric machine.

[0023] Reference numerals:

[0024] 100: Support plate 101: Chamber 102: Stator wire

[0025] 103: outlet panel 104: inlet panel 105: inlet spacing

[0026] 106: outlet spacing 107: surface protrusion 200: support plate

[0027] 201: first stator wire 202: second stator wire 203: V-groove

[0028] 300: support plate 301: magnetic matching part 302: chamber

[0029] 303: first stator line 304: second stator line 305: inlet spacing

[0030] 306: outlet spacing 400: support plate 401: first stator wire

[0031] 402: second stator wire 403: lower slot 404: upper slot

[0032] 500: support plate 501: first stator wire 502: second stator wire

[0033] 503: Lower slot 504: Upper slot 600: Inlet panel

[0034] 601: outlet panel 602: first stator wire 603: second stator wire

[0035] 604: lower slot 605: upper slot 701: motor

[0036] 702: stator core 703: stator housing 704: support plate

[0037] 705: Magnetic fittings DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the following examples.

[0039] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be embodied in various forms and should not be construed as being limited to the embodiments described herein, but are provided for the purpose of a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for exemplary purposes only and are not intended to limit the scope of protection of the present disclosure.

[0040] As used herein, the term "including" and its variations are open-ended inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions of other terms will be given in the description below. It should be noted that concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of functions performed by these devices, modules or units.

[0041] It should be noted that the modifiers of “one” and “plurality” mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless the context clearly indicates otherwise, the modifiers should be understood as “one or more”. The names of messages or information exchanged between multiple devices in the embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0042] Figure 1 A perspective view of an example application scenario of a support plate 100 through an embodiment of the present invention is shown. The support plate 100 includes a chamber 101, an outlet panel 103, an inlet panel 104, an inlet spacing 105, an outlet spacing 106, and a surface protrusion 107. The stator wire 102 enters the chamber 101 from the inlet panel 104 side through the inlet spacing 105, and leaves the chamber 101 from the outlet panel 103 side through the outlet spacing 106. In addition, the surface protrusion 107 supports the stator wire 102 to be connected when a magnetic matching member is applied to cut the insulation of the stator wire and connect the stator wire. Optionally, there is no limitation on the shape of the surface protrusion 107. The details of the magnetic matching member will be described in the following section.

[0043] Optionally, the support plate 100 may be made of plastic, wood, glass or other similar materials. The stator wire 102 may be made of copper (Cu) wire or aluminum (Al) wire coated with an insulator.

[0044] The continuous operation of the motor requires a reliable connection of the stator wire. The support plate 100 is used to support the stator wire 102 and provide an up-and-down layout of the stator wire 102 to be connected. In the prior art, the V-groove design on the support plate is used to ensure that the stator wire can maintain an up-and-down layout. When the magnetic mating piece is pressed, the insulator of the stator wire can be cut as completely as possible to achieve a stable connection.

[0045] Figure 2 This is an example application scenario of the embodiment of the V-groove design described in this article. The design of the V-groove 203 on the support plate 200 is used to ensure that the first stator wire 201 and the second stator wire 202 always maintain an up-and-down layout. When the magnetic mating piece is pressed, the insulators of the first stator wire 201 and the second stator wire 202 can be cut as completely as possible to achieve a stable connection.

[0046] However, in the case where one V-groove accommodates two stator wires, there is no end portion for accommodating the second stator wire 202, and therefore, it is not possible to ensure the up-and-down arrangement of the first stator wire 201 and the second stator wire 202. When the magnetic fitting is pressed, the second stator wire 202 may not have a stable connection with the first stator wire 201 in the V-groove. In this case, the reliability of the connection of the stator wire for the motor cannot be ensured.

[0047] In addition, in the same series of products, different types of motors have stator wires of different diameters. If only one size of V-groove 203 is applied to match all different stator wires, the up-and-down layout of the stator wires to be connected cannot be guaranteed. In addition, a stator wire with a larger diameter may not be inserted into the V-groove 203, and the insulator of a stator wire with a smaller diameter may not be completely cut by the magnetic fitting.

[0048] In order to ensure that the first stator wire 201 and the second stator wire 202 always maintain an up-and-down layout, a solution is to produce a series of support plates 200 with different sizes of V-grooves 203. One size of the V-groove corresponds to a type of stator wire with a specific diameter. Therefore, it is necessary to produce multiple support plates.

[0049] In order to reduce the manufacturing cost of the support plate while maintaining the reliability of the connection of the stator wires for the motor, it is necessary to design a type of support plate that can be used to accommodate and hold an up-and-down layout of stator wires having different diameters.

[0050] Figure 3 It is another embodiment of the connection device described herein and an example of the magnetic matching member. The connection device comprises a support plate 300 and a magnetic matching member 301. The magnetic matching member 301 is made of metal.

[0051] The chamber 302 in the support plate 300 is used to support the magnetic fitting 301 and the first stator wire 303 and the second stator wire 304. The stator wire 303 enters the chamber 302 through the entrance spacing 305 and leaves the chamber 302 through the exit spacing 306. In addition, the first stator wire 303 and the second stator wire 304 must be inserted into the end portions of the entrance spacing 305 and the exit spacing 306. The magnetic fitting 301 is used to cut the insulators of the first stator wire 303 and the second stator wire 304 and connect the first stator wire 303 and the second stator wire 304 in an up-down layout.

[0052] Specifically, when the magnetic fitting 301 is pressed, the insulators of the first stator wire 303 and the second stator wire 304 may be cut as completely as possible to achieve a stable connection.

[0053] Figure 4 It is an embodiment of the connection device of the present invention. There are two slots in the outlet panel of the support plate 400, a lower slot 403 and an upper slot 404. The lower slot 403 accommodates the first stator wire 401, and the upper slot 404 accommodates the second stator wire 402. Specifically, the first stator 401 wire is located at the end portion of the lower slot, and the second stator 402 wire is located at the end portion of the upper slot. In addition, the first stator wire 401 enters the chamber before the second stator wire 402, and the first stator wire 401 has an up-and-down layout with the second stator wire 402. The ends of the two slots can accommodate the first stator wire and the second stator wire, respectively, and keep the first stator wire and the second stator wire in an up-and-down layout. This double-slot design improves the reliability of the connection of the stator wires used for the motor.

[0054] The lower slot 403 has a first direction and the upper slot 404 has a second direction. The two directions are on opposite sides of the inlet panel and have the same pattern in the outlet panel. Specifically, the end portion of the lower slot 403 is vertically aligned with the end portion of the upper slot 404. In addition, there is no limitation on the shape of the lower slot 403 and the upper slot 404 in the outlet panel as long as the up-and-down layout of the first stator 401 and the second stator 402 can be ensured.

[0055] The width of the end portion of the lower slot 403 and the upper slot 404 is determined by the maximum diameter of the stator wire used for a series of motors. For example, if the diameter of the stator wire used for a series of motors ranges from 0.1 mm to 0.3 mm, the width of the end portion of the lower slot 403 and the upper slot 404 is set to 0.3 mm. Therefore, the support plate 400 is applicable to a series of motors of a specific product. All stator wires used for the same series of motors can be fully inserted into the lower slot 403 and the upper slot 404. In this way, the connecting device is applicable to the connection of a series of stator wires with different diameters, and the production cost of the support plate and the connecting device can be reduced.

[0056] Optionally, an additional clamping device may be applied to tightly fix the first stator wire 401 and the second stator wire 402 in the ends of the lower slot 403 and the upper slot 404, respectively. In this way, when the magnetic fitting is pressed, the up-and-down arrangement of the first stator wire 401 and the second stator wire 402 can still be ensured. The reliability of the connection of the stator wire for the motor can be improved.

[0057] Figure 5 It is another embodiment of the connection device of the present invention. There are two slots in the outlet panel of the support plate 500, a lower slot 503 and an upper slot 504. The lower slot 503 accommodates the first stator wire 501, and the upper slot 504 accommodates the second stator wire 502. Specifically, the first stator 501 line is located at the end portion of the lower slot, and the second stator 502 line is located at the end portion of the upper slot. In addition, the first stator wire 501 enters the chamber before the second stator wire 502, and the first stator wire 501 has an up-and-down layout with the second stator wire 502. The ends of the two slots can accommodate the first stator wire and the second stator wire, respectively, and keep the first stator wire and the second stator wire in an up-and-down layout. This double-slot design improves the reliability of the connection of the stator wires used for the motor.

[0058] The lower slot 503 has a first direction, and the upper slot 504 has a second direction. Both directions are on the same side of the inlet panel and have the same pattern in the outlet panel. Specifically, the end portion of the lower slot 503 is vertically aligned with the end portion of the upper slot 504. In addition, there is no limitation on the shape of the lower slot 503 and the upper slot 504 in the outlet panel as long as the up-and-down layout of the first stator 501 and the second stator 502 can be ensured.

[0059] The width of the end portion of the lower slot 503 and the upper slot 504 is determined by the maximum diameter of the stator wire used for a series of motors. For example, if the diameter of the stator wire used for a series of motors ranges from 0.1 mm to 0.3 mm, the width of the end portion of the lower slot 503 and the upper slot 504 is set to 0.3 mm. Therefore, the support plate 500 is applicable to a series of motors of a specific product. All stator wires used for the same series of motors can be fully inserted into the lower slot 503 and the upper slot 504. In this way, the connecting device is applicable to the connection of a series of stator wires with different diameters, and the production cost of the support plate and the connecting device can be reduced.

[0060] Optionally, an additional clamping device may be applied to tightly fix the first stator wire 501 and the second stator wire 502 in the ends of the lower slot 503 and the upper slot 504, respectively. In this way, when the magnetic fitting is pressed, the up-and-down arrangement of the first stator wire 501 and the second stator wire 502 can still be ensured. The reliability of the connection of the stator wire for the motor can be improved.

[0061] Figure 6 It is another embodiment of the connection device of the present invention. There are two slots, a lower slot 604 and an upper slot 605 in the inlet panel 600 and the outlet panel 601 of the support plate, respectively. The lower slot 604 accommodates the first stator wire 602, and the upper slot accommodates the second stator wire 603. Specifically, the first stator wire 602 is located at the end portion of the lower slot, and the second stator wire 603 is located at the end portion of the upper slot. In addition, the first stator wire 602 enters the chamber before the second stator wire 603, and the first stator wire 602 has an up-and-down layout with the second stator wire 603. The ends of the two slots can accommodate the first stator wire and the second stator wire, respectively, and keep the first stator wire and the second stator wire in an up-and-down layout. This double slot design improves the reliability of the connection of the stator wires for the motor.

[0062] The lower slot 604 has a first direction, and the upper slot 605 has a second direction. Optionally, the two directions may be on opposite sides or the same side of the inlet panel 600, with different patterns in the outlet panel 601. Specifically, the end portion of the lower slot 604 is vertically aligned with the end portion of the upper slot 605. In addition, there is no limitation on the shape of the lower slot 604 and the upper slot 605 in the inlet panel 600 and the outer panel 601, as long as the up-and-down layout of the first stator 602 and the second stator 603 can be guaranteed.

[0063] The width of the end portion of the lower slot 604 and the upper slot 605 is determined by the maximum diameter of the stator wire used for a series of motors. For example, if the diameter of the stator wire used for a series of motors ranges from 0.1 mm to 0.3 mm, the width of the end portion of the lower slot 604 and the upper slot 605 is set to 0.3 mm. Therefore, the support plate is suitable for a series of motors of a specific product. All stator wires used for the same series of motors can be fully inserted into the lower slot 604 and the upper slot 605. In this way, the connecting device is suitable for the connection of a series of stator wires with different diameters, and the production cost of the support plate and the connecting device can be reduced.

[0064] Optionally, an additional clamping device may be applied to tightly fix the first stator wire 602 and the second stator wire 603 in the ends of the lower slot 604 and the upper slot 605, respectively. In this way, when the magnetic mating piece is pressed, the up-and-down arrangement of the first stator wire 602 and the second stator wire 603 can still be ensured. The reliability of the connection of the stator wire for the motor can be improved.

[0065] Figure 7 It is another embodiment of the connection device of the present invention in a motor. The motor 701 comprises a set of stator cores 702, a stator housing 703, a set of support plates 704 and a set of magnetic matching parts 705. The stator core 702 is used to accommodate the stator winding in a proper position. The stator housing 702 is used to accommodate the stator assembly.

[0066] refer to Figure 1 and Figure 4 , each of the support plates 704 includes a chamber 101, an outlet panel 103, an inlet panel 104, an inlet spacing 105, and an outlet spacing 106. The inlet spacing 105 or the outlet spacing 106 can be a lower slot 403 or an upper slot 404. The lower slot 403 is designed to accommodate the first stator wire 401, and the upper slot 404 is designed to accommodate the second stator wire 402. Specifically, the first stator 401 wire is located at the end portion of the lower slot, and the second stator 402 wire is located at the end portion of the upper slot. The first stator wire 401 and the second stator wire 402 have an up-and-down layout in the chamber 101. The magnetic fitting 705 is used to cut through the insulators of the first stator wire 401 and the second stator wire 402 and connect the first stator wire 401 and the second stator wire 402 in an up-and-down layout.

[0067] In addition, the number of support plates 704 required for a series of motors is determined by a specific product. The support plate 704 can be designed as an independent component. Figure 7 In the case of the embodiment shown in , fourteen separate support plates are assembled. Optionally, twelve support plates can be designed as a whole and applied to the motor as a single component.

[0068] An embodiment of the present invention discloses a motor and a connection device for connecting the stator wire of the motor. The connection device includes: a support plate, which includes a chamber; a lower slot and an upper slot, the lower slot is configured to accommodate a first stator wire and the first stator wire is located at the end portion of the lower slot, the upper slot is configured to accommodate a second stator wire and the second stator wire is located at the end portion of the upper slot, and the first stator wire and the second stator wire have an up-down layout in the chamber; and a magnetic matching piece, which is configured to cut the insulator of the first stator wire and the second stator wire and connect the first stator wire and the second stator wire in an up-down layout. The design of the lower slot and the upper slot of the connection device improves the reliability of the connection of the stator wire for the motor. At the same time, the width of the end portion of the lower slot and the end portion of the upper slot is the maximum diameter of the stator wire for a series of motors; therefore, a connection device of a design is suitable for the connection of a series of stator wires with different diameters. This solution reduces the production cost of the connection device.

[0069] The present invention has been shown and described in detail above through the drawings and preferred embodiments. However, the present invention is not limited to these disclosed embodiments, and other solutions derived from the embodiments by those skilled in the art also fall within the protection scope of the present invention.

Claims

1. A connection device for connecting a stator wire of an electric machine, comprising: A support plate comprising a chamber; a lower slot and an upper slot, wherein the lower slot is configured to accommodate a first stator wire and the first stator wire is located at an end portion of the lower slot, the upper slot is configured to accommodate a second stator wire and the second stator wire is located at an end portion of the upper slot, and the first stator wire and the second stator wire have an upper and lower layout in the chamber; and A magnetic fitting is configured to cut through the insulators of the first stator wire and the second stator wire and connect the first stator wire and the second stator wire in the up-and-down arrangement.

2. The connection device according to claim 1, wherein the width of the end portion of the lower slot and the end portion of the upper slot is the maximum diameter of the stator wire for a series of electric machines.

3. The connection device according to claim 1 and claim 2, wherein the lower groove has a first direction and the upper groove has a second direction, the first direction and the second direction belonging to the same direction or opposite directions.

4. The connection device according to any one of claims 1 to 3, wherein the end portion of the lower slot is vertically aligned with the end portion of the upper slot.

5. The connection device according to any one of claims 1 to 4, wherein the chamber is configured to support the magnetic fitting and the first and second stator wires.

6. The connection device according to any one of claims 1 to 5, wherein the chamber further comprises: an entry panel configured to contain entry spacings for the first stator wire and the second stator wire to enter the chamber; an exit panel configured to contain an exit spacing for the first stator wire and the second stator wire to exit the chamber; and Surface protrusions.

7. A connection device according to any one of claims 1 to 6, wherein the lower slot and the upper slot are located in the inlet panel or the outlet panel.

8. The connection device according to any one of claims 1 to 7, wherein the surface protrusions are configured to support the first and second stator wires to be connected in the chamber.

9. The connection device according to any one of claims 1 to 8, wherein the first stator wire enters the chamber before the second stator wire. 10 . The connection device according to claim 1 , wherein the first stator wire and the second stator wire are copper (Cu) wires or aluminum (Al) wires coated with an insulator.

11. The connection device according to any one of claims 1 to 10, wherein the magnetic fitting is made of metal.

12. A motor, comprising: a stator core configured to house the stator windings in place; a housing configured to house the stator assembly; A support plate comprising a chamber; a lower slot and an upper slot, wherein the lower slot is configured to accommodate a first stator wire and the first stator wire is located at an end portion of the lower slot, the upper slot is configured to accommodate a second stator wire and the second stator wire is located at an end portion of the upper slot, and the first stator wire and the second stator wire have an upper and lower layout in the chamber; and A magnetic fitting is configured to cut through the insulators of the first stator wire and the second stator wire and connect the first stator wire and the second stator wire in the up-and-down arrangement.

13. The electric machine of claim 12, wherein the width of the end portion of the lower slot and the end portion of the upper slot is a maximum diameter of the stator wire for a series of electric machines.

14. The motor according to any one of claims 12 and 13, wherein the lower slot has a first direction and the upper slot has a second direction, the first direction and the second direction being the same direction or opposite directions.

15. The electric machine according to any one of claims 12 to 14, wherein the end portion of the lower slot is vertically aligned with the end portion of the upper slot.

16. The electric machine of any one of claims 12 to 15, wherein the cavity is configured to support the magnetic engagement member and the first and second stator wires.

17. The electric machine according to any one of claims 12 to 16, wherein the chamber further comprises: an entry panel configured to contain entry spacing for the first stator wire and the second stator wire to enter the chamber; an exit panel configured to contain an exit spacing for the first stator wire and the second stator wire to exit the chamber; and Surface protrusions.

18. An electrical machine according to any one of claims 12 to 17, wherein the lower slot and the upper slot are located in the inlet panel or the outlet panel.

19. The electric machine according to any one of claims 12 to 18, wherein the surface protrusions are configured to support the first and second stator wires to be connected in the cavity.

20. An electric machine as claimed in any one of claims 12 to 19, wherein the first stator wire enters the chamber before the second stator wire. 21 . The motor according to claim 12 , wherein the first stator wire and the second stator wire are copper (Cu) wires or aluminum (Al) wires coated with an insulator.

22. The electric machine according to any one of claims 12 to 21, wherein the magnetic matching part is made of metal.

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