A connection assembly for a stator winding, a motor stator and a motor

Abstract

The application provides a wiring assembly for a stator winding, a motor stator and a motor, comprising an insulation frame, a movable frame and a piercing terminal, the insulation frame is wound with an enameled wire winding, and the problem of unreliable independent bridge wire electrical connection is solved; the movable frame is arranged on the insulation frame, and electrical conduction of different windings is realized through the piercing terminal, the wiring structure is simple, convenient to disassemble and high in wiring efficiency, can adapt to different wiring modes of the winding, and solves the problems of complicated assembly process and disordered wiring; an outer yoke of the insulation frame is formed with a wire passing groove for fixing the bridge wire of the winding; the insulation frame comprises a fixed frame and a common frame, and both are formed with a first piercing terminal groove, realizing quick series connection of the winding of the common frame and the winding of the fixed frame; the common frame is further formed with a second piercing terminal groove, realizing parallel connection of the windings of multiple common frames; the degree of automation is high, wiring is regular, errors are not easy to occur, and enameled wires are not damaged.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a wiring assembly for stator windings, a motor stator, and a motor. Background Technology

[0002] In existing motors, when wiring the various windings of the stator core, multiple winding ends need to be present simultaneously before rounding and wiring. In order to achieve electrical conduction of each phase winding, many wiring components are required, resulting in complex wiring structure, cumbersome assembly process, messy wiring, and unreliable electrical connection between windings. In addition, there are safety hazards, high operational requirements, and easy errors. Disassembly between various components is inconvenient, resulting in low wiring efficiency. Summary of the Invention

[0003] In view of this, the present invention provides a wiring assembly for stator windings, a motor stator and a motor, to solve the problems of complex wiring structure, cumbersome assembly process and unreliable electrical connection between windings in the prior art.

[0004] This invention provides a wiring assembly for stator windings, the wiring assembly comprising an insulating frame, a movable frame, and piercing terminals; the insulating frame is wound with windings, the inlet and outlet ends of the windings being electrically connected to the piercing terminals respectively;

[0005] The movable frame is mounted on the insulating frame, and the electrical conduction of different windings is achieved through the piercing terminal; the windings are made of enameled wire.

[0006] Further optionally, both the insulating frame and the movable frame are formed with piercing terminal grooves; the piercing terminal includes piercing terminal A and piercing terminal B which is plugged into and electrically connected to piercing terminal A;

[0007] One of the piercing terminals A and B is disposed in the piercing terminal slot of the insulating frame and electrically connected to the winding of the corresponding insulating frame, and the other is disposed in the piercing terminal slot of the movable frame and electrically connected to the winding of the corresponding insulating frame. The piercing terminals A and B are plugged in to realize the electrical connection of the different windings.

[0008] Further optionally, the length of the bridge line of the winding in phase is L, and the outer circumference of the stator is C, wherein 45mm≤3L-C≤60mm.

[0009] Further optionally, the insulating frame is provided with a slot or a buckle, and the movable frame is provided with a buckle or a slot. The buckle and the slot cooperate to make the movable frame detachably connected to the insulating frame at the piercing terminal slot of the insulating frame.

[0010] Further optionally, the insulating frame has an outer yoke, and a wire-passing groove is formed on the outer side of the outer yoke for fixing the bridge wire of the winding; one end of the outer yoke forms the piercing terminal groove for fixing the piercing terminal A or the piercing terminal B; the other end of the outer yoke forms an exit wire groove for the exit wire of the winding.

[0011] Optionally, the insulating frame includes a fixed frame and a common frame, both of which have a first piercing terminal groove. The first piercing terminal groove of the common frame and the first piercing terminal groove of the fixed frame are provided with either piercing terminal A or piercing terminal B. Correspondingly, the piercing terminal B or piercing terminal A is provided in the piercing terminal groove of the movable frame. Through the electrical conduction of the piercing terminal A and the piercing terminal B, the windings of the common frame and the windings of the fixed frame are connected in series, as well as the windings of multiple fixed frames are connected in series.

[0012] Further optionally, the common frame further includes a second piercing terminal slot, in which the piercing terminal A or piercing terminal B is disposed. Correspondingly, the piercing terminal slot of the movable frame is provided with piercing terminal B or piercing terminal A. Through the electrical conduction of the piercing terminal A and piercing terminal B, the windings of multiple common frames are connected in parallel.

[0013] Further optionally, the common frame includes three, and the three common frames are respectively wound around the three-phase windings; the three common frames are connected to the common line through the piercing terminals in their respective second piercing terminal slots, so as to realize the parallel connection of one end of the three-phase windings.

[0014] Further optionally, the common frame includes a first common frame and a second common frame, and the common wire includes a first common wire; the input end of the winding of the first common frame is electrically connected to one end of the first common wire through the piercing terminal, and the other end of the first common wire is electrically connected to the input end of the winding of the second common frame through the piercing terminal, thereby realizing the parallel connection of the windings of the first common frame and the windings of the second common frame.

[0015] Further optionally, the common frame further includes a third common frame, and the common line further includes a second common line; the input end of the winding of the second common frame is electrically connected to one end of the second common line through the piercing terminal, and the other end of the second common line is electrically connected to the input end of the winding of the third common frame through the piercing terminal, thereby realizing the parallel connection of the windings of the second common frame and the windings of the third common frame.

[0016] The present invention also provides a motor stator, comprising a plurality of stator units, wherein each stator unit includes a stator core, windings, and a wiring assembly for the stator windings as described in any of the above claims; the insulating frame is connected to the stator core and the windings are wound around it; different windings are connected in series or in parallel through the pierced terminals.

[0017] The present invention also provides an electric motor, including an electric motor rotor and the electric motor stator described above, wherein the electric motor rotor and the electric motor stator are coaxially arranged.

[0018] This invention provides a wiring assembly for stator windings, comprising an insulating frame, a movable frame, and piercing terminals. The insulating frame is wound with enameled wire, solving the problems of unreliable and inconvenient electrical connection of independent bridging wires. The movable frame is disposed on the insulating frame and achieves electrical conduction between different windings through piercing terminals, allowing for convenient and quick electrical connection with the insulating frame. The wiring structure is simple, the wiring components are easy to disassemble, the electrical connection is reliable, and the wiring efficiency is high. It can adapt to different wiring methods of windings, solving the problems of cumbersome assembly processes and messy wiring. A wire-passing groove is formed on the outer side of the outer yoke of the insulating frame to fix the bridging wire of the winding, avoiding the problem of the wire passing through the inside of the stator hitting the rotating parts. The insulating frame includes a fixed frame and a common frame, both of which have a first piercing terminal groove, realizing the rapid series connection of the windings of the common frame and the fixed frame, as well as the rapid series connection of the windings of multiple fixed frames. The common frame also has a second piercing terminal groove, realizing the parallel connection of the windings of multiple common frames. It has a high degree of automation, regular wiring, is less prone to errors, and does not damage the enameled wire. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0021] Figure 1a , Figure 1b and Figure 1c A schematic diagram of the fixed frame embodiment provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of an embodiment of the active skeleton provided by the present invention;

[0023] Figure 3a and Figure 3b A schematic diagram of the common skeleton embodiment provided by the present invention;

[0024] Figure 4a This is a schematic diagram of the structure of embodiment A of the piercing terminal provided by the present invention;

[0025] Figure 4b This is a schematic diagram of the structure of embodiment B of the piercing terminal provided by the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the slot and buckle embodiment provided by the present invention;

[0027] Figure 6 A schematic diagram of an embodiment of the bridge wire arrangement of the winding of the insulating skeleton provided by the present invention;

[0028] Figure 7a This is a schematic diagram of the stator structure provided by the present invention;

[0029] Figure 7b for Figure 7a Enlarged view of the explosion at point D;

[0030] In the picture:

[0031] 11-Outer yoke; 111-Piercing terminal slot of insulating frame; 112-Wire passage slot; 113-Wire through slot; 114-Wire exit slot; 12-Toothed part; 121-Winding; 122-Inlet end; 123-Outlet end; 124-Bridge wire; 13-Slot; 14-Fixed frame; 141-First fixed frame; 142-Second fixed frame; 15-Common frame; 151-First common frame; 152-Second common frame; 153-Third common frame; 154-Second piercing terminal slot; 16-First piercing terminal slot; 17-Slot;

[0032] 2-Modible frame; 21-Piercing terminal slot of movable frame; 22-Snap-on;

[0033] 31-Main body; 32-Fixing part; 321-Piercing groove; 322-Positioning protrusion; 33-Piercing terminal A; 331-Snap-fit ​​part; 34-Piercing terminal B; 341-Snap-fit ​​position;

[0034] 41 - First common line; 42 - Second common line. Detailed Implementation

[0035] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0037] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0038] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0039] Existing motor stator core winding wiring methods suffer from numerous wire ends and required components, leading to complex wiring structures, cumbersome assembly processes, messy wiring, and unreliable electrical connections between windings. Furthermore, disassembly of the wiring components is inconvenient, resulting in low wiring efficiency. This invention creatively provides a stator winding wiring assembly comprising an insulating frame, a movable frame, and piercing terminals. The insulating frame is wound with windings, with the winding's input and output ends electrically connected to the piercing terminals. This design offers a simple structure, reliable and convenient electrical connections. The movable frame, mounted on the insulating frame, achieves electrical connection between different windings via the piercing terminals. The windings are made of enameled wire, facilitating easy disassembly and high wiring efficiency. It is applicable to different winding wiring methods, solving the problems of cumbersome assembly processes and messy wiring.

[0040] like Figure 1a , Figure 1b , Figure 1c , Figure 2 , Figure 3a and Figure 3b As shown, this embodiment provides a wiring assembly for stator windings. The wiring assembly includes an insulating frame, a movable frame 2, and piercing terminals. The insulating frame is wound with a winding 121, which uses enameled wire to solve the problems of unreliable and inconvenient independent bridge wire electrical connection. The inlet end 122 and outlet end 123 of the winding 121 are electrically connected to the piercing terminals, respectively. The movable frame 2 is set on the insulating frame and achieves electrical connection between different windings 121 through the piercing terminals. The wiring structure is simple, the wiring components are detachable, wiring is convenient and quick, wiring efficiency is high, it can adapt to different wiring methods of the winding 121, the wiring process has low workload and low operation requirements, and is not prone to errors, solving the problems of cumbersome assembly process and messy wiring.

[0041] To achieve a reliable connection between the piercing terminal and the insulating frame and the movable frame 2, both the insulating frame and the movable frame 2 are provided with piercing terminal slots. Specifically, taking the insulating frame as an example, the piercing terminal slot 111 of the insulating frame is open at one end to facilitate the installation of the piercing terminal. The piercing terminal slot 111 of the insulating frame forms a wire-passing groove 112 with one end open and the other end closed, and the end of the winding 121 is embedded in the wire-passing groove 112. The wire-passing groove 112 is open at one end of the insulating frame and passes through the two opposite side walls of the insulating frame. The end of the winding 121 extends from one side of the wire-passing groove 112 to the other side of the wire-passing groove 112 and is then embedded in the wire-passing groove 112 to achieve a reliable connection.

[0042] To achieve rapid electrical conduction between different windings, such as Figure 4a and Figure 4b As shown, the piercing terminal has a fixing part 32; the fixing part 32 is engaged in the piercing terminal groove to fix the piercing terminal to the insulating frame and the movable frame 2; specifically, the bottom of the piercing terminal forms a fixing part 32, the fixing part 32 has a structure adapted to the piercing terminal groove, and the fixing part 32 cooperates with the piercing terminal groove to realize a reliable connection between the piercing terminal and the insulating frame and the movable frame 2;

[0043] Furthermore, the fixing part 32 forms a piercing groove 321 with one end open and the other end closed. The opening direction of the piercing groove 321 is opposite to the opening direction of the wire passage groove 112. It is used to pierce the enamel coating of the enameled wire to realize the electrical conduction between the enameled wire and the pierced terminal. When the fixing part 32 is engaged in the pierced terminal groove, the piercing groove 321 pierces the end of the winding in the wire passage groove 112 to realize the electrical conduction with the inlet end 122 or outlet end 123 of the winding 121 in the wire passage groove 112. Specifically, the piercing groove 321 is open at one end of the bottom of the piercing terminal and passes through the two opposite sides of the piercing terminal. The through direction of the piercing groove 321 is consistent with the through direction of the wire groove 112. When the fixing part 32 is embedded in the piercing terminal groove, the end of the winding 121 is embedded in the space formed by the piercing groove 321 and the wire groove 112 to fix the end of the winding 121. The piercing groove 321 pierces the end of the winding 121 to achieve electrical conduction with the end of the winding 121.

[0044] Specifically, the piercing terminal includes a main body 31, and a fixing part 32 is formed on the side of the main body 31. The fixing part 32 is an annular structure formed by bending from the bottom to the top of the piercing terminal. The front-back direction of the fixing part 32 is a deformable elastic structure, so that the fixing part 32 is locked after being inserted into the piercing terminal groove. In order to facilitate guidance and positioning, the left and right sides of the fixing part 32 are provided with positioning protrusions 322 that protrude to the left and right sides respectively. The left and right sides of the piercing terminal groove are provided with vertical sliding grooves that match them, so as to realize the front-back positioning of the fixing part 32 when it is inserted into the piercing terminal groove. The bottom of the fixing part 32 and the bottom of the main body 31 form a piercing groove 321. The piercing groove 321 opens towards the bottom of the piercing terminal and the groove opening gradually widens, and it penetrates along the front-back direction of the piercing terminal.

[0045] To achieve electrical continuity between the pierced terminals, such as Figure 4a and Figure 4bAs shown, the piercing terminal includes a piercing terminal A33 and a piercing terminal B34 that is plugged into and electrically connected to the piercing terminal A33 to avoid improper assembly operations that could lead to wiring errors. The piercing terminal A33 has a snap-fit ​​element 331, and the piercing terminal B34 has a snap-fit ​​position 341. The snap-fit ​​element 331 of the piercing terminal A33 and the snap-fit ​​position 341 of the piercing terminal B34 cooperate to achieve electrical connection between the piercing terminal A33 and the piercing terminal B34. One end of the winding 121 is electrically connected to the piercing terminal A33, and the other end of the winding 121 is electrically connected to the piercing terminal B34. The electrical connection is then established through the piercing terminals A33 and B34. The electrical conduction of 4 is achieved, thereby realizing the electrical conduction between the two windings 121; preferably, the snap-fit ​​331 is formed on the top of the piercing terminal A33, and the snap-fit ​​position 341 is formed on the top of the piercing terminal B34; the other structures of the piercing terminal A33 and the piercing terminal B34 are the same; specifically, the main body 31 of the piercing terminal A33 extends to the top to form the snap-fit ​​331, and the gap between the top of the fixing part 32 of the piercing terminal B34 and the top of the main body 31 of the piercing terminal B34 is the snap-fit ​​position 341; the assembly is simple and efficient, which can improve the automation level of motor assembly, reduce manual labor, and thus reduce costs.

[0046] To facilitate the winding of the winding 121, after the piercing terminal is electrically connected to the end of the winding 121, it needs to be placed in the piercing terminal slot 21 of the movable frame. Specifically, one of the piercing terminals A33 and B34 is placed in the piercing terminal slot 111 of the insulating frame and electrically connected to the winding 121 of the corresponding insulating frame, while the other is placed in the piercing terminal slot 21 of the movable frame and electrically connected to the winding 121 of the corresponding insulating frame. The piercing terminals A33 and B34 are plugged in to achieve electrical connection between different windings 121. The piercing terminal can fix the inlet end of the winding 121 to the insulating frame. The movable frame 2 is electrically connected to the outlet end of the winding 121 and can move freely with the outlet end 123 of the winding 121, which facilitates the robot arm to grip the end of the winding 121 when winding the winding 121.

[0047] Furthermore, in order to connect the windings 121 of the two insulating frames, the movable frame 2 is provided with a piercing terminal A33 or a piercing terminal B34, which is electrically connected to the output terminal 123 of the winding 121 of one insulating frame. Correspondingly, the other insulating frame is provided with a piercing terminal B34 or a piercing terminal A33, which is electrically connected to the input terminal 122 of its winding 121. Then, the piercing terminal A33 and the piercing terminal B34 are plugged in and electrically connected to achieve the electrical connection of the windings 121 of the two insulating frames.

[0048] When the windings 121 of the two insulating frames are in phase, the length of the bridging wire between the two insulating frames is L, and the outer circumference of the stator is C, wherein 35mm≤3L-C≤70mm; preferably, 45mm≤3L-C≤60mm.

[0049] To ensure a reliable connection after the piercing terminal A33 and the piercing terminal B34 are inserted, such as Figure 5 As shown, the insulating frame is provided with a slot 17 or a buckle 22, and the movable frame 2 is provided with a buckle 22 or a slot 17. The buckle 22 cooperates with the slot 17 so that the movable frame 2 is detachably connected to the insulating frame at the piercing terminal slot 111 of the insulating frame. Preferably, the insulating frame is provided with a slot 17 and the movable frame 2 is provided with a buckle 22.

[0050] To prevent the bridge wire 124 of winding 121 from easily touching rotating parts when passing through the inside of the stator, such as Figure 1a , Figure 1b and Figure 6 As shown, the insulating frame has an outer yoke 11, and a wire groove 113 is formed on the outer side of the outer yoke 11 for fixing the bridging wire 124 of the winding 121. Specifically, multiple wire guide posts extend from the outer side of the outer yoke 11 away from the outer yoke 11. The multiple wire guide posts are arranged in a linear pattern, and the gap between the wire guide posts forms the wire groove 113. The size of the wire groove 113 is adapted to the bridging wire 124 of the winding 121. One end of the outer yoke 11 forms a piercing terminal groove for fixing the piercing terminal A33 or the piercing terminal B34. The other end of the outer yoke 11 forms an exit groove 114 for the allowance of the incoming and outgoing wires of the winding 121 to ensure the winding quality.

[0051] Furthermore, the insulating frame is formed with teeth 12, and the teeth 12 are wound with windings 121;

[0052] To achieve the connection between multi-phase windings, the insulating frame includes a fixed frame 14 and a common frame 15, both of which have a first piercing terminal groove 16. Piercing terminals A33 or B34 are provided at the first piercing terminal groove 16 of the common frame 15 and the first piercing terminal groove 16 of the fixed frame 14. Correspondingly, piercing terminals B34 or A33 are provided in the piercing terminal groove 21 of the movable frame. Through the electrical conduction of piercing terminals A33 and B34, the windings 121 of the common frame 15 and the windings 121 of the fixed frame 14 are connected in series, as well as the windings 121 of multiple fixed frames 14 are connected in series.

[0053] Furthermore, such as Figure 3a and Figure 3b As shown, the common frame 15 also includes a second piercing terminal slot 154, in which a piercing terminal A33 or a piercing terminal B34 is provided. Correspondingly, the piercing terminal B34 or the piercing terminal A33 is provided in the piercing terminal slot 21 of the movable frame. Through the electrical conduction of the piercing terminal A33 and the piercing terminal B34, the windings 121 of multiple common frames 15 are connected in parallel.

[0054] In this embodiment, as Figure 7a and Figure 7b As shown, taking a three-phase stator with nine windings as an example, each phase includes three windings, and the common frame 15 includes three windings and each winding is wound around the three-phase windings. The three common frames are connected to the common line through the piercing terminals in their respective second piercing terminal slots 154, so as to realize the parallel connection of one end of the three-phase windings.

[0055] Furthermore, the common frame 15 includes a first common frame 151 and a second common frame 152, and the common line includes a first common line 41; the movable frame 2 includes a first movable frame, a second movable frame, and a third movable frame; the input end 122 of the winding 121 of the first common frame 151 is electrically connected to one end of the first common line 41 through a pierced terminal, and the other end of the first common line 41 is electrically connected to the input end 122 of the winding 121 of the second common frame 152 through a pierced terminal, thereby realizing the parallel connection of the winding 121 of the first common frame 151 and the winding 121 of the second common frame 152;

[0056] Specifically, a piercing terminal B1 is provided in the second piercing terminal slot 154 of the first common frame 151, which is electrically connected to the input terminal 122 of the winding 121 of the first common frame 151. A piercing terminal A1 is provided in the piercing terminal slot of the first movable frame, which is electrically connected to one end of the first common line 41. When piercing terminal A1 and piercing terminal B1 are plugged in and electrically connected, the input terminal 122 of the winding 121 of the first common frame 151 is electrically connected to one end of the first common line 41; the second piercing terminal of the second common frame 152... A piercing terminal B2 is provided in the sub-slot 154, which is electrically connected to the input terminal 122 of the winding 121 of the second common frame 152. A piercing terminal A2 is provided in the piercing terminal slot of the second movable frame, which is electrically connected to the other end of the first common line 41. Thus, the input terminal 122 of the winding 121 of the second common frame 152 is electrically connected to the other end of the first common line 41. Therefore, the input terminal 122 of the winding 121 of the first common frame 151 and the input terminal 122 of the winding 121 of the second common frame 152 are connected in series.

[0057] The common frame 15 also includes a third common frame 153, and the common line also includes a second common line 42; the input terminal 122 of the winding 121 of the second common frame 152 is electrically connected to one end of the second common line 42 through a pierced terminal, and the other end of the second common line 42 is electrically connected to the input terminal 122 of the winding 121 of the third common frame 153 through a pierced terminal, thereby realizing the parallel connection of the winding 121 of the second common frame 152 and the winding 121 of the third common frame 153;

[0058] Specifically, one end of the second common line 42 is electrically connected to the piercing terminal A2. A piercing terminal B3 is provided in the second piercing terminal slot 154 of the third common frame 153, which is electrically connected to the input terminal 122 of the winding 121 of the third common frame 153. A piercing terminal A3 is provided in the piercing terminal slot of the third movable frame, which is electrically connected to the other end of the second common line 42. When the piercing terminal A3 and the piercing terminal B3 are plugged in and electrically connected, the input terminal 122 of the winding 121 of the third common frame 153 is electrically connected to the other end of the second common line 42. Therefore, the input terminal 122 of the winding 121 of the second common frame 152 and the input terminal 122 of the winding 121 of the third common frame 153 are connected in series.

[0059] The fixed frame 14 includes a first fixed frame 141 and a second fixed frame 142, and the movable frame also includes a fourth movable frame, a fifth movable frame, and a sixth movable frame; the output terminal 123 of the winding 121 of the first common frame 151 is electrically connected to the input terminal 122 of the winding 121 of the first fixed frame 141 through a pierced terminal, and the output terminal 123 of the winding 121 of the first fixed frame 141 is electrically connected to the input terminal 122 of the winding 121 of the second fixed frame 142 through a pierced terminal, thereby realizing the series connection of the winding 121 of the first common frame 151, the winding 121 of the first fixed frame 141, and the winding 121 of the second fixed frame 142;

[0060] Specifically, a piercing terminal B4 is provided in the first piercing terminal slot 16 of the first common frame 151, which is electrically connected to the output terminal 123 of the winding 121 of the first common frame 151. A piercing terminal A4 is provided in the piercing terminal slot of the fourth movable frame, which is electrically connected to the input terminal 122 of the winding 121 of the first fixed frame 141. When piercing terminal A4 and piercing terminal B4 are plugged in and electrically connected, the output terminal 123 of the winding 121 of the first common frame 151 is electrically connected to the input terminal 122 of the winding 121 of the first fixed frame 141. A piercing terminal B5 is provided in the piercing terminal slot of the first fixed frame 141, which is electrically connected to the output terminal 123 of the winding 121 of the first fixed frame 141. The output terminal 123 of 21 is electrically conductive. A piercing terminal A5 is provided in the piercing terminal slot of the fifth movable frame, which is electrically conductive to the input terminal 122 of the winding 121 of the second fixed frame 142. Thus, the output terminal 123 of the winding 121 of the first fixed frame 141 is electrically conductive to the input terminal 122 of the winding 121 of the second fixed frame 142. A piercing terminal B6 is provided in the piercing terminal slot of the second fixed frame 142, which is electrically conductive to the output terminal 123 of the winding 121 of the second fixed frame 142. Therefore, the winding 121 of the first common frame 151, the winding 121 of the first fixed frame 141, and the winding 121 of the second common frame 142 are connected in series.

[0061] This embodiment provides a motor stator, including multiple stator units. Each stator unit includes a stator core, windings, and a wiring assembly for the stator windings as described above. An insulating frame is connected to the stator core and wound with windings. Different windings are connected in series or in parallel by piercing terminals.

[0062] This embodiment also provides an electric motor, including a motor rotor and the motor stator described above, wherein the motor rotor and the motor stator are coaxially arranged.

[0063] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A wiring assembly for stator windings, characterized in that, The wiring assembly includes an insulating frame, a movable frame, and piercing terminals; the insulating frame is wound with windings made of enameled wire, and the inlet and outlet ends of the windings are electrically connected to the piercing terminals respectively; the movable frame is disposed on the insulating frame and achieves electrical connection between different windings through the piercing terminals. The piercing terminal includes piercing terminal A and piercing terminal B, wherein piercing terminal A can be plugged into piercing terminal B for electrical conduction; both the insulating frame and the movable frame are formed with piercing terminal slots; the insulating frame includes a fixed frame and a common frame; Both the fixed frame and the common frame have a first piercing terminal groove; one of the piercing terminal A and the piercing terminal B is provided at the first piercing terminal groove of the common frame and the first piercing terminal groove of the fixed frame, and the other of the piercing terminal A and the piercing terminal B is provided in the piercing terminal groove of the movable frame. Through the electrical conduction of the piercing terminal A and the piercing terminal B, the windings of the common frame and the windings of the fixed frame are connected in series, and the windings of multiple fixed frames are connected in series. The common frame also forms a second piercing terminal groove, in which one of the piercing terminal A and piercing terminal B is disposed. Correspondingly, the other of the piercing terminal A and piercing terminal B is disposed in the piercing terminal groove of the movable frame. Through the electrical conduction of the piercing terminal A and piercing terminal B, the windings of the multiple common frames are connected in parallel.

2. The wiring assembly for stator windings according to claim 1, characterized in that, The length of the bridge line of the winding in phase is L, and the outer circumference of the stator is C; wherein, 35mm≤3L-C≤70mm.

3. The wiring assembly for stator windings according to claim 1, characterized in that, The insulating frame is provided with a slot or a buckle, and the movable frame is provided with a buckle or a slot. The buckle and the slot cooperate to make the movable frame detachably connected to the insulating frame at the piercing terminal slot of the insulating frame.

4. The wiring assembly for stator windings according to claim 3, characterized in that, The insulating frame has an outer yoke, and a wire-passing groove is formed on the outer side of the outer yoke for fixing the bridging wire of the winding; one end of the outer yoke forms the piercing terminal groove for fixing the piercing terminal A or piercing terminal B; the other end of the outer yoke forms an exit wire groove for the exit wire of the winding.

5. The wiring assembly for stator windings according to claim 4, characterized in that, The common frame includes three, and the three common frames are respectively wound around the three-phase windings; the three common frames are connected to the common line through the piercing terminals in their respective second piercing terminal slots, so as to realize the parallel connection of one end of the three-phase windings.

6. The wiring assembly for stator windings according to claim 5, characterized in that, The common frame includes a first common frame and a second common frame, and the common wire includes a first common wire; the input end of the winding of the first common frame is electrically connected to one end of the first common wire through the piercing terminal, and the other end of the first common wire is electrically connected to the input end of the winding of the second common frame through the piercing terminal, thereby realizing the parallel connection of the windings of the first common frame and the windings of the second common frame.

7. The wiring assembly for stator windings according to claim 6, characterized in that, The common frame also includes a third common frame, and the common line also includes a second common line; the input end of the winding of the second common frame is electrically connected to one end of the second common line through the piercing terminal, and the other end of the second common line is electrically connected to the input end of the winding of the third common frame through the piercing terminal, thereby realizing the parallel connection of the windings of the second common frame and the windings of the third common frame.

8. A motor stator, characterized in that, It includes multiple stator units, each stator unit comprising a stator core, windings, and a wiring assembly for the stator windings as described in any one of claims 1-7; the insulating frame is connected to the stator core and wound with the windings; different windings are connected in series or in parallel through the pierced terminals.

9. An electric motor, characterized in that, It includes a motor rotor and a motor stator as described in claim 8, wherein the motor rotor and the motor stator are coaxially arranged.

Images