Stator terminal block and electric machine

Abstract

A kind of stator terminal board and motor, it is related to the technical field of motor;Stator terminal board includes: terminal board body, for being installed at the end of stator;Multiple limiting portions, the limiting portion defines multiple wiring channels on the terminal board body, the wiring channel is arranged along the circumference of the stator, for the outgoing line of winding arrangement, wherein, the distribution position of the outgoing line of non-common end of winding for arranging the winding of different phase in the radial and / or axial of the stator is different.Winding outgoing line is arranged in corresponding wiring channel, the wiring of outgoing line is clear and understandable, and wiring is not easy to connect wrong, and after the outgoing line is assembled in wiring channel, the distribution position of the outgoing line of non-common end of winding of different phase in the radial and / or axial of the stator is different, it is favorable to avoid the overlapping of the outgoing line of non-common end of winding of different phase, improves the insulation isolation effect, it is favorable to improve the stability of motor work.

Description

Technical Field

[0001] This application relates to the technical field of electric motors, specifically to a stator terminal block and an electric motor. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy, widely used in various mechanical equipment, automation systems, and household appliances. An electric motor consists of a stator and a rotor. The stator includes a stator core, winding slots, and windings housed within these slots. After the windings are wound in the slots, the ends are led out to form leads, which are used for electrical connections between the windings. Currently, the wiring between windings typically involves directly connecting the ends of the leads. This wiring is prone to errors, and the leads often overlap and crisscross, leading to short circuits if insulation fails, thus reducing the stability of the motor's operation. Utility Model Content

[0003] This application provides a stator terminal block and a motor, which can solve the problem of easy incorrect connection when directly connecting windings.

[0004] According to one aspect of this application, one embodiment provides a stator terminal block, comprising:

[0005] Terminal block body, used for mounting at the end of the stator;

[0006] Multiple limiting parts define multiple wiring channels on the terminal block body. The wiring channels extend circumferentially along the stator and are used to lay out the leads of the windings. The wiring channels used to lay out the non-common terminal leads of windings of different phases are distributed at different positions in the radial and / or axial directions of the stator.

[0007] In one embodiment, the wiring channels for laying the common terminal leads of each phase winding are located differently in the radial and / or axial directions from the wiring channels for laying the non-common terminal leads of the windings.

[0008] In one embodiment, the terminal block body includes a first layer and a second layer distributed along the axial direction. The first layer is disposed at the outer end of the second layer, and the outer end is the end away from the stator. The wiring channel for laying the non-common terminal lead of the winding is the first channel, and the wiring channel for laying the common terminal lead of each phase winding is the second channel.

[0009] The first channel is disposed on the first layer, and the second channel is disposed on the second layer; wherein, the second channel is a first groove formed on the outer side wall of the terminal block body and extending circumferentially along the terminal block body, or, the second channel is a second groove formed on the inner side wall of the terminal block body and extending circumferentially along the terminal block body.

[0010] In one embodiment, the limiting part is a partition provided on the terminal block body, the partition being used for the lead wire to be wound around; or, the limiting part is a third groove provided on the terminal block body, the third groove being used for assembling the lead wire.

[0011] In one embodiment, the partition is arc-shaped, and multiple arc-shaped partitions are distributed at intervals along the circumference of the stator.

[0012] In one embodiment, the sidewall of the partition is provided with a protrusion, and a gap is left between the protrusion and the surface of the terminal block body for assembling the lead wire.

[0013] In one embodiment, the terminal block body is provided with a plurality of circumferentially distributed wire-passing grooves, which are used for the lead wires to pass through the winding grooves to enter the wiring channels. The wire-passing grooves extend radially along the stator, and one end of the grooves is connected to the outermost wiring channel, and the other end is connected to the innermost wiring channel.

[0014] In one embodiment, the limiting part is provided with a wiring part for fixing the lead wire and realizing the electrical connection between the lead wires.

[0015] In one embodiment, the wiring portion is a conductive terminal provided on the limiting portion; or, the limiting portion is provided with a screw hole, and the wiring portion is a conductive screw for connecting to the screw hole.

[0016] According to another aspect of this application, one embodiment provides an electric motor, including a stator and a stator terminal block as described above, the stator terminal block being installed at the end of the stator, the stator including a plurality of windings, the leads of the windings being respectively arranged in the corresponding wiring channels, wherein the non-common end leads of the windings of different phases are distributed at different positions in the radial and / or axial directions of the stator.

[0017] According to the stator terminal block and motor of the above embodiments, the wiring channels extend circumferentially along the stator and are used to lay the winding leads. The wiring channels for laying the non-common end leads of windings of different phases are distributed at different positions in the radial and / or axial directions of the stator. By laying the winding leads in the corresponding wiring channels, the routing of the leads is clear and easy to understand, and wiring errors are less likely. Furthermore, after the leads are assembled in the wiring channels, the different distribution positions of the non-common end leads of windings of different phases in the radial and / or axial directions of the stator help avoid overlapping and crossing between the non-common end leads of windings of different phases, improving insulation isolation and enhancing the stability of motor operation. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the stator terminal block in one embodiment;

[0019] Figure 2 This is a schematic diagram of a wiring channel extending circumferentially in one embodiment.

[0020] Figure 3 This is a schematic diagram of a structure in which the first channel and the second channel are axially misaligned according to one embodiment.

[0021] Figure 4 This is a schematic diagram of a structure in which the wiring part is a terminal block according to one embodiment;

[0022] Figure 5 This is a schematic diagram of a structure in which the wiring part is a conductive screw according to one embodiment;

[0023] Figure 6 A schematic diagram of the circuit structure of a stator winding according to one embodiment;

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Connector board body; 2-Limiting part; 201-Partition plate; 202-Protrusion; 3-Wire passage groove; 4-Connection part; 401-Terminal; 402-Conductive screw; 5-First channel; 501-W phase connection channel; 502-V phase connection channel; 503-U phase connection channel; 6-Non-common terminal lead-out wire; 7-Common terminal lead-out wire; 8-Second channel. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0027] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0028] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0029] An electric motor consists of a stator and a rotor. The stator includes a stator core, winding slots, and windings housed within these slots. After the windings are wound in the slots, the ends are led out to form leads. These leads are used for electrical connections between windings. Leads connected to windings of different phases are called common-terminal leads, while those connected to power lines or windings of the same phase are called non-common-terminal leads. Currently, the wiring between windings typically involves directly connecting the ends of the leads. This method is prone to errors, and the leads often overlap and crisscross, leading to short circuits if insulation fails, thus reducing the stability of the motor's operation.

[0030] This application provides wiring channels on the stator terminal block for arranging the winding leads. The wiring channels for arranging the non-common terminal leads of different phases of the windings are distributed differently in the radial and / or axial directions of the stator. Arranging the winding leads within the corresponding wiring channels makes the wiring path clear and easy to follow, reducing the risk of incorrect connections. Furthermore, after the leads are assembled in the wiring channels, the different radial and / or axial distribution of the non-common terminal leads of different phases helps avoid overlapping and interlacing between the non-common terminal leads of different phases, improving insulation isolation and enhancing the stability of the motor operation.

[0031] The following describes some embodiments of the stator terminal block and motor provided in this application with reference to the accompanying drawings.

[0032] Please see Figures 1 to 5 This application provides a stator terminal block, including a terminal block body 1, a plurality of limiting parts 2, and other functional components as needed, which are described in detail below.

[0033] In this embodiment, the terminal block body 1 is used to be installed at the end of the stator; multiple limiting parts 2 define multiple wiring channels on the terminal block body 1. The wiring channels extend along the circumference of the stator and are used to lay the lead wires of the windings. The wiring channels used to lay the non-common end lead wires 6 of the windings of different phases are distributed in different positions in the radial and / or axial directions of the stator.

[0034] It is understood that the material of the terminal block body 1 in this embodiment can be, but is not limited to, synthetic resin or plastic. This embodiment does not specifically limit the shape of the limiting part 2; it can restrict the routing of the lead wires. The limiting part 2 can be an integral structure on the terminal block body 1, or it can be a component installed on the terminal block body 1 via a connection. The shapes or sizes of multiple limiting parts 2 can be the same or different. In this embodiment, the circumferential direction of the stator is the same as the circumferential direction of the stator. The wiring channel extends along the circumferential direction of the stator. After the lead wire is assembled in the wiring channel, the lead wire also extends along the circumferential direction of the stator. By laying the lead wires of the winding in the corresponding wiring channel, the routing of the lead wires is clear and easy to understand, and wiring errors are less likely. In this embodiment, the non-common terminal lead 6 of the winding is a lead that does not need to be electrically connected to the leads of other windings of different phases. For example, a lead of a U-phase winding only needs to be electrically connected to the leads of other U-phase windings, or only needs to be electrically connected to the U-phase power line, and does not need to be electrically connected to the leads of the V-phase or W-phase windings. Therefore, the lead of this U-phase winding is the non-common terminal lead 6. The common terminal lead 7 of the winding is a lead that needs to be electrically connected to the leads of other windings of different phases. For example, a lead of a U-phase winding needs to be electrically connected to the leads of the V-phase or W-phase windings. Therefore, the lead of this U-phase winding is the common terminal lead 7. Figure 6The diagram illustrates the wiring principle of a stator winding in a series star connection of the same phase. Each lead corresponds to a different number. Leads with numbers 6, 12, and 15 are common terminal leads, while leads with the remaining numbers are non-common terminal leads. This example is only intended to explain the function of common and non-common terminal leads and does not limit the specific wiring method of the stator winding. It is understood that the stator terminal block provided in this embodiment is not only applicable to star connections but also to other motor wiring methods such as delta connections and star-delta reduced-voltage starting connections. Similarly, the stator terminal block provided in this embodiment is not only applicable to series connections of the same phase but also to parallel connections of the same phase. In this embodiment, the wiring channels for the non-common terminal leads 6 used to lay out windings of different phases are distributed in different radial and / or axial directions of the stator. For example, the wiring channels for the non-common terminal leads 6 used to lay out windings of different phases can be staggered in the radial direction of the stator, staggered in the axial direction of the stator, or staggered in both the axial and radial directions of the stator. The wiring channels for the non-common terminal leads 6 used to lay out windings of different phases may include wiring channels for laying out non-common terminal leads 6 of the U-phase winding, wiring channels for laying out non-common terminal leads 6 of the V-phase winding, and wiring channels for laying out non-common terminal leads 6 of the W-phase winding. In this embodiment, the radial direction of the stator is the diameter direction of the stator, and the axial direction of the stator is the axis direction of the stator. This embodiment does not impose specific restrictions on the distribution position of the wiring channels of the non-common terminal leads 6 used for laying out windings of different phases in the circumferential direction of the stator, and there may be overlapping parts in the circumferential direction of the stator.

[0035] In the stator terminal block provided in this embodiment, the wiring channels for laying the winding leads extend circumferentially along the stator. The wiring channels for laying the non-common terminal leads 6 of different phase windings are distributed differently in the radial and / or axial directions of the stator. By laying the winding leads in the corresponding wiring channels, the routing of the leads is clear and easy to understand, reducing the likelihood of incorrect wiring. Furthermore, after the leads are assembled in the wiring channels, the different radial and / or axial distribution of the non-common terminal leads 6 of different phase windings helps to avoid overlapping and interlacing between the non-common terminal leads 6 of different phase windings, improving insulation isolation and enhancing the stability of the motor operation.

[0036] In one embodiment, such as Figure 1 , Figure 3As shown, the wiring channels for the common terminal leads 7 used to lay out the windings of each phase are distributed differently in the radial and / or axial directions from the wiring channels for the non-common terminal leads 6 used to lay out the windings. This staggered arrangement of the wiring channels for the common terminal leads 7 and the non-common terminal leads 6 in the radial and / or axial directions helps to avoid overlapping and interlacing between the common terminal leads 7 and the non-common terminal leads 6, improving insulation isolation and enhancing the stability of motor operation. In some embodiments, the common terminal leads 7 may not be present among the leads; in this case, only the radial and / or axial distribution of the wiring channels for the non-common terminal leads 6 used to lay out the windings needs to be different.

[0037] In one embodiment, such as Figure 3As shown, the terminal block body 1 includes a first layer and a second layer distributed along the axial direction. The first layer is located at the outer end of the second layer, with the outer end being the end away from the stator. The wiring channel for arranging the non-common terminal lead-out lines 6 of the windings is the first channel 5, and the wiring channel for arranging the common terminal lead-out lines 7 of each phase winding is the second channel 8. The first channel 5 is located in the first layer, and the second channel 8 is located in the second layer. The second channel 8 is either a first groove formed on the outer wall of the terminal block body 1 and extending circumferentially along the terminal block body 1, or a second groove formed on the inner wall of the terminal block body 1 and extending circumferentially along the terminal block body 1. In this embodiment, the first layer and the second layer are defined only for spatial interpretation and do not limit the terminal block body to have a layered structure with first and second layers. In this embodiment, the first layer is located at the outer end of the second layer, the first channel 5 is located in the first layer, and the second channel 8 is located in the second layer; that is, the first channel 5 and the second channel 8 are axially offset. In this embodiment, the second channel 8 is a first groove formed on the outer wall of the terminal block body 1 and extending circumferentially along the terminal block body 1. That is, the second channel 8 is a groove structure, and this groove structure is located on the outer wall of the terminal block body 1. The common terminal lead-out wires 7 of each phase winding are evenly distributed in the first groove on the outer wall of the terminal block body 1, which is beneficial for the assembly of each common terminal lead-out wire 7. Alternatively, the second channel 8 is a second groove formed on the inner wall of the terminal block body 1 and extending circumferentially along the terminal block body 1. That is, the second channel 8 is a groove structure, and this groove structure is located on the inner wall of the terminal block body 1. The common terminal lead-out wires 7 of each phase winding are evenly distributed in the second groove on the inner wall of the terminal block body 1, which is also beneficial for the assembly of each common terminal lead-out wire 7. In some embodiments, the second channel 8 may be an annular groove on the outer or inner wall of the terminal block body 1. In some embodiments, the second channel 8 may also be an arc-shaped groove on the outer or inner wall of the terminal block body 1. In some application scenarios, the second channel 8 can also be located on the first layer, or in the middle between the outer and inner sidewalls of the terminal block body 1; alternatively, the first channel 5 can also be located on the second layer, allowing the first channel 5 and the second channel 8 to be arranged in a staggered manner. In some embodiments, the second channel 8 can also be located on the first layer, simply staggered from the first channel 5. In this embodiment, the circumferential direction of the terminal block body 1, i.e., the circular direction of the terminal block body 1, can be annular.

[0038] In one embodiment, such as Figure 1As shown, the limiting part 2 is a partition 201 provided on the terminal block body 1, which is used for winding the lead wire; or, the limiting part 2 is a third groove provided on the terminal block body 1, which is used for assembling the lead wire. The partition 201 has a protruding structure on the terminal block body 1, which can restrict the routing of the lead wire. During assembly, the lead wire is wound around the partition 201 on the corresponding wiring channel. In this embodiment, the partition 201 can be an integral structure with the terminal block body 1. When the limiting part 2 is a third groove, the third groove can also restrict the routing of the lead wire. During assembly, the lead wire is assembled into the corresponding groove. In some embodiments, the limiting part 2 can also be other structures or components.

[0039] In one embodiment, the partition 201 is arc-shaped, and multiple arc-shaped partitions 201 are distributed at intervals along the circumference of the stator. The arc-shaped partitions 201 facilitate the formation of wiring channels extending along the circumference of the stator, and the spaced distribution of the partitions 201 helps to save material and reduce weight. In this embodiment, the height of the partition 201 can be greater than the diameter of the lead wire, or the height of the partition 201 can be slightly smaller than the diameter of the lead wire. In some embodiments, the partitions 201 may also correspond one-to-one with the wiring channels, that is, the partitions 201 are not distributed at intervals along the corresponding wiring channels, but rather form an integral plate structure.

[0040] In one embodiment, a protrusion 202 is provided on the side wall of the partition 201, and a gap for mounting the lead wire is left between the protrusion 202 and the surface of the terminal block body 1. The protrusion 202 helps to prevent the lead wire from coming out of the wiring channel. This embodiment does not limit the specific structure of the protrusion 202. For example, it can be a block structure or a cylindrical structure. There can be one or multiple protrusions 202 on the side wall of the partition 201. In each partition 201 in a wiring channel, some partitions 201 can have protrusions 202, and some partitions 201 can be without protrusions 202. Alternatively, none of the partitions 201 can have protrusions 202. In this case, in order to prevent the lead wire from coming out, the height of the partition 201 can be designed to be high enough, or the partition 201 can be inclined to form an acute angle between the partition 201 and the surface of the terminal block body 1, and the lead wire is wound around the acute angle.

[0041] In one embodiment, such as Figure 1 , Figure 2As shown, the terminal block body 1 has multiple circumferentially distributed wire-passing grooves 3. These grooves allow lead wires to pass through the winding grooves and enter the wiring channel. The wire-passing grooves 3 extend radially along the stator, with one end connected to the outermost wiring channel and the other end connected to the innermost wiring channel. The wire-passing grooves 3 guide the lead wires emerging from the stator's winding grooves, ensuring smooth entry into the wiring channel. They can axially penetrate the terminal block body 1. This embodiment does not impose a specific limit on the number of wire-passing grooves 3; they can be selected according to the specific winding configuration. In some embodiments, the wire-passing grooves 3 can also have other structures, such as extending from the inner wall of the terminal block body 1 to the wiring channel in the middle of the terminal block body 1, or extending from the outer wall of the terminal block body 1 to the wiring channel in the middle of the terminal block body 1.

[0042] In one embodiment, such as Figure 1 , Figure 4 , Figure 5 As shown, the limiting part 2 is provided with a wiring part 4 for fixing the lead wires and realizing the electrical connection between the lead wires. After the limiting part 2 is provided with the wiring part 4, the lead wires in the wiring channel can be directly fixed and electrically connected through the wiring part 4 on the corresponding wiring channel, which is simple to operate and helps to reduce the probability of incorrect wiring. In some embodiments, the wiring part 4 can correspond one-to-one with the wiring channel. For example, each limiting part 2 corresponding to each wiring channel is provided with a wiring part 4. In other embodiments, the limiting part 2 corresponding to some wiring channels may not be provided with a wiring part 4, and the wiring structure can be provided in other parts of the wiring body.

[0043] In one embodiment, such as Figure 4 As shown, the wiring portion 4 can be a conductive terminal 401 provided on the limiting portion 2; or, as... Figure 5 As shown, the limiting part 2 is provided with a screw hole, and the wiring part 4 is a conductive screw 402 for connecting to the screw hole. When the wiring part 4 is a terminal 401, the terminal 401 can be fixed to the limiting part 2 by injection molding, or fixed in the hole provided on the limiting part 2 by interference fit. During electrical connection, the lead wire can be wound around the terminal 401, which is simple to manufacture. When the wiring part 4 is a conductive screw 402, the assembly of the wiring part 4 is simple. After the lead wire is wound around the terminal 401, the screw can be tightened to increase the stability of the electrical connection.

[0044] In the stator terminal block provided in the above embodiment, the wiring channels for laying the winding leads extend circumferentially along the stator. The wiring channels for laying the non-common terminal leads 6 of different phase windings are distributed differently in the radial and / or axial directions of the stator. By laying the winding leads in the corresponding wiring channels, the routing of the leads is clear and easy to understand, reducing the likelihood of incorrect wiring. Furthermore, after the leads are assembled in the wiring channels, the different radial and / or axial distribution of the non-common terminal leads 6 of different phase windings helps to avoid overlapping and interlacing between the non-common terminal leads 6 of different phase windings, improving insulation isolation and enhancing the stability of motor operation.

[0045] Please see Figures 1 to 5 This application embodiment also provides a motor, including a stator and a stator terminal block as described above. The stator terminal block is installed at the end of the stator. The stator includes multiple windings, and the leads of the windings are respectively arranged in corresponding wiring channels. The non-common terminal leads 6 of the windings of different phases are distributed in different positions in the radial and / or axial directions of the stator.

[0046] The stator terminal block in this embodiment is the same as that in the above embodiment, and will not be described again here. In this embodiment, the winding is wound in the winding slot of the stator, and the lead wire of the winding is wound in the terminal channel. In one embodiment, as... Figure 2 As shown, the wiring channels may include a U-phase wiring channel 503, a V-phase wiring channel 502, and a W-phase wiring channel 501. The U-phase wiring channel 503, V-phase wiring channel 502, and W-phase wiring channel 501 are distributed in different radial and / or axial positions on the stator. Specifically, each U-phase non-common terminal lead 6 may be evenly distributed in the U-phase wiring channel 503, each V-phase non-common terminal lead 6 may be evenly distributed in the V-phase wiring channel 502, and each W-phase non-common terminal lead 6 may be evenly distributed in the W-phase wiring channel 501. In one embodiment, as... Figure 1 , Figure 2 As shown, taking the same-phase parallel star connection method, with 24 stator slots and a double winding method as an example, the U-phase wiring channel 503 can extend from slot 2 to slot 16, the V-phase wiring channel 502 can extend from slot 10 to slot 24, and the W-phase wiring channel 501 can extend from slot 8 to slot 18. The above is just an example, and the specific settings of the wiring channels can be set according to different stator models.

[0047] In the motor provided in this embodiment, the wiring channels for laying the winding leads extend circumferentially along the stator. The wiring channels for laying the non-common end leads 6 of windings of different phases are distributed differently in the radial and / or axial directions of the stator. By laying the winding leads in the corresponding wiring channels, the routing of the leads is clear and easy to understand, reducing the likelihood of incorrect wiring. Furthermore, after the leads are assembled in the wiring channels, the different radial and / or axial distribution of the non-common end leads 6 of windings of different phases helps to avoid overlapping and interlacing between the non-common end leads 6 of windings of different phases, improving insulation isolation and enhancing the stability of motor operation.

[0048] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A stator terminal block, characterized in that, include: Terminal block body, used for mounting at the end of the stator; Multiple limiting parts define multiple wiring channels on the terminal block body. The wiring channels extend circumferentially along the stator and are used to lay out the leads of the windings. The wiring channels used to lay out the non-common terminal leads of windings of different phases are distributed at different positions in the radial and / or axial directions of the stator.

2. The stator terminal block as described in claim 1, characterized in that, The wiring channels used for laying the common terminal leads of each phase winding are located differently in the radial and / or axial directions from the wiring channels used for laying the non-common terminal leads of the winding.

3. The stator terminal block as described in claim 2, characterized in that, The terminal block body includes a first layer and a second layer distributed along the axial direction. The first layer is disposed at the outer end of the second layer. The outer end is the end away from the stator. The wiring channel for laying the non-common terminal lead of the winding is the first channel, and the wiring channel for laying the common terminal lead of each phase winding is the second channel. The first channel is disposed on the first layer, and the second channel is disposed on the second layer; wherein, the second channel is a first groove formed on the outer side wall of the terminal block body and extending circumferentially along the terminal block body, or, the second channel is a second groove formed on the inner side wall of the terminal block body and extending circumferentially along the terminal block body.

4. The stator terminal block as described in any one of claims 1-3, characterized in that, The limiting part is a partition provided on the terminal block body, and the partition is used for the lead wire to be wound around; or, the limiting part is a third groove provided on the terminal block body, and the third groove is used for assembling the lead wire.

5. The stator terminal block as described in claim 4, characterized in that, The partition is arc-shaped, and multiple arc-shaped partitions are distributed at intervals along the circumference of the stator.

6. The stator terminal block as described in claim 4, characterized in that, The side wall of the partition is provided with a protrusion, and a gap is left between the protrusion and the surface of the terminal block body for assembling the lead wire.

7. The stator terminal block as described in any one of claims 1-3, characterized in that, The terminal block body is provided with a plurality of circumferentially distributed wire passage grooves. The wire passage grooves are used for the lead wires to pass through the winding grooves to enter the wiring channels. The wire passage grooves extend radially along the stator, and one end of the wire passage grooves is connected to the outermost wiring channel, and the other end is connected to the innermost wiring channel.

8. The stator terminal block as described in any one of claims 1-3, characterized in that, The limiting part is provided with a wiring part for fixing the lead wire and realizing the electrical connection between the lead wires.

9. The stator terminal block as described in claim 8, characterized in that, The wiring part is a conductive terminal provided on the limiting part; or, the limiting part is provided with a screw hole, and the wiring part is a conductive screw for connecting with the screw hole.

10. An electric motor, characterized in that, The stator includes a stator and a stator terminal block as described in any one of claims 1-9, the stator terminal block being installed at the end of the stator, the stator including a plurality of windings, the leads of the windings being respectively arranged in the corresponding wiring channels, wherein the non-common terminal leads of the windings of different phases are distributed at different positions in the radial and / or axial directions of the stator.

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