A stator end wiring device and a motor

Abstract

The application discloses a stator end portion wiring device and a motor, and relates to the technical field of motors, wherein the stator end portion wiring device comprises an end disc assembly, a plurality of wire grooves and a connecting piece; the connecting piece is used for fixed connection with the motor stator; the assembly comprises a plurality of busbars; the busbars are arranged in one-to-one correspondence with the wire grooves; the busbar comprises a plurality of wiring protrusions and phase line protrusions; the wiring protrusions and the phase line protrusions all extend to the outside of the wire groove; the wiring protrusions of the same busbar are arranged in a ring array about the axis of the end disc assembly; the radial projection of all the wiring protrusions and / or the phase line protrusions along the end disc assembly is free of overlap; the stator end portion wiring device and the motor can wire the phase line wiring end according to a predetermined sequence, keep the stator end portion wiring neat, reduce the axial space occupation of the motor, facilitate mechanical automatic wiring, and improve production efficiency.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically, to a stator end wiring device and a motor. Background Technology

[0002] A motor stator typically includes a stator support and multiple sets of coil windings on its outer periphery. The coil windings include a coil support and winding wires. The phase wire ends of the multiple sets of coil windings (such as flat wires or round wires) need to be connected through terminal blocks to form a phase wire interface.

[0003] In the process of implementing this application, the applicant discovered the following problems with the prior art:

[0004] After the winding is wound onto the wire winding, the terminals at its ends are usually manually wound onto the winding assembly or shaped using an end plate. However, regardless of the method, the terminals of the winding lack fixed welding positions, which is not conducive to automated production and makes it difficult to improve the overall processing efficiency. Furthermore, the final welding of the winding terminals still requires manual operation, resulting in messy terminal positions and interference between multiple winding terminals. This leads to chaotic wiring at the motor stator end, increased space occupation, and poor overall integrity.

[0005] In summary, how to solve the problem of increased axial space occupation of the motor caused by the lack of fixed welding positions at the winding terminals of the motor stator and the mutual interference of the terminals is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a stator end wiring device, which fixes the busbar by setting a groove in the end plate assembly, and the busbar is provided with wiring protrusions arranged in a ring array, and the phase wire protrusions do not overlap along the radial projection of the end plate assembly, so that the phase wire terminals of the coil winding can be wired in a predetermined order without interfering with each other, keeping the stator end wiring neat, reducing the axial space occupied by the motor, and facilitating mechanized automatic wiring, thereby improving production efficiency.

[0007] The second objective of this invention is to provide a motor that includes the above-described stator end wiring device, has the same technical features, and can solve the same technical problem.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A stator end wiring device for end wiring of a motor stator;

[0010] The stator end wiring device includes:

[0011] The end plate assembly includes a connector and several wire grooves, wherein the connector is used for fixed connection with the motor stator;

[0012] The bus assembly includes a plurality of busbars, each busbar corresponding to a cable tray. Each busbar includes a plurality of wiring protrusions and phase wire protrusions, both of which extend outside the cable tray. The wiring protrusions of the same busbar are arranged in a circular array about the axis of the end plate assembly, and all the wiring protrusions and / or phase wire protrusions do not overlap when projected radially along the end plate assembly.

[0013] Preferably, the groove is an arc-shaped groove;

[0014] The radii of several of the aforementioned grooves are not equal, and they are arranged concentrically;

[0015] The areas enclosed by the central angles of any two of the aforementioned grooves may have partially non-overlapping regions.

[0016] Preferably, the groove includes several straight segments that form an angle with each other.

[0017] Preferably, the groove is an annular groove, and all the straight segments within the same groove have the same length, and the included angle between any two straight segments is equal.

[0018] Preferably, the bus assembly includes a U-phase bus, a V-phase bus, and a W-phase bus;

[0019] There are three sets of cable trays, which are used to assemble the U-phase busbar, the V-phase busbar and the W-phase busbar respectively;

[0020] The starting ends of the U-phase bus, the V-phase bus, and the W-phase bus are arranged sequentially in a counterclockwise direction along the end plate assembly, or the starting ends of the U-phase bus, the W-phase bus, and the V-phase bus are arranged sequentially in a counterclockwise direction along the end plate assembly.

[0021] Preferably, the end plate assembly includes a fixed plate and a cover plate;

[0022] The cover plate is used to cover the wire groove, and the cover plate includes a second hollow hole for the wire connection protrusion to pass through. A bending protrusion is provided on the cover plate around the second hollow hole for the wire to bend around the bending protrusion and then contact the wire connection protrusion to conduct electricity.

[0023] Preferably, the inner ring portion of the fixed disk is recessed downward to form an inner ring portion, and the non-recessed area forms an outer ring portion;

[0024] The groove is arranged in the inner ring portion;

[0025] The outer ring is provided with a countersunk hole, and the large diameter portion of the countersunk hole has a notch on the side near the inner ring, so that the head of the bolt assembled in the countersunk hole can abut and press against the surface of the cover plate.

[0026] Preferably, the end plate assembly further includes a plurality of terminal positioning components arranged in a circular array for fixing the wires connected to the bus assembly.

[0027] Preferably, the terminal positioning assembly includes two elastic arms that can approach each other for clamping and fixing the wire between the two elastic arms. The root of the elastic arm is fixedly connected to the end plate assembly, the top is a free end, and the top adjacent sides of the two elastic arms are provided with guide slopes.

[0028] An electric motor, comprising the stator terminal wiring device described in any one of the preceding claims.

[0029] The stator end wiring device provided by the present invention has at least the following advantages compared with the prior art:

[0030] 1. By setting wire grooves in the end plate assembly, the busbar of the busbar assembly is fixedly assembled, so that when the phase wire connection terminal of the coil winding is welded to the busbar, there is a fixed welding position, which facilitates mechanized automatic welding and improves production efficiency.

[0031] 2. The busbar is provided with connection protrusions and phase line protrusions extending to the outside of the wire slot. The phase line connection terminals and phase lines are welded to the busbar for conduction. Moreover, the connection protrusions are arranged in a ring array with respect to the end plate assembly. That is, when the phase line connection terminals are welded to the busbar, the nearest connection protrusion can be selected for welding. This helps to shorten the length of the phase line connection terminals between the coil winding and the busbar, avoids the accumulation of windings at the end of the motor stator, and helps to reduce the axial length of the motor.

[0032] 3. Furthermore, by arranging the positions of multiple busbars, the projections of the wiring protrusions of different busbars on the radial side of the end plate assembly do not overlap, thereby avoiding mutual interference between the wiring terminals of different phase lines during welding. This allows the wiring terminals of different phases in the coil winding to be wired in a predetermined order without interfering with each other.

[0033] The motor provided by the present invention includes the stator end wiring device described above and has the same beneficial effects. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a first embodiment of the motor stator provided by the present invention;

[0036] Figure 2 for Figure 1 Bottom view of the stator of the electric motor;

[0037] Figure 3 This is a schematic diagram of the structure of the first embodiment of the end-panel assembly provided by the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of a first embodiment of the stator end wiring device provided by the present invention;

[0039] Figure 5 This is a schematic diagram of the bus assembly provided by the present invention;

[0040] Figure 6 This is a schematic diagram of the assembly of the coil winding and busbar assembly provided by the present invention;

[0041] Figure 7 This is a schematic diagram of the structure of a second embodiment of the motor stator provided by the present invention;

[0042] Figure 8 This is a schematic diagram of a second embodiment of the stator end wiring device provided by the present invention;

[0043] Figure 9 Provided by the present invention Figure 7 Enlarged view of point A in the middle;

[0044] Figure 10 This is a schematic diagram of the structure of the first embodiment of the cover plate provided by the present invention;

[0045] Figure 11 This is a schematic diagram of the third embodiment of the motor stator provided by the present invention;

[0046] Figure 12 Provided by the present invention Figure 11 Bottom view of the stator of the electric motor;

[0047] Figure 13 Provided by the present invention Figure 11 Enlarged view of point B in the image;

[0048] Figure 14A schematic diagram of the third embodiment of the stator end wiring device provided by the present invention;

[0049] Figure 15 This is a schematic diagram of the assembly of the coil winding and the stator end wiring device provided by the present invention.

[0050] Figure 16 Provided by the present invention Figure 11 A sectional view of the stator of the electric motor;

[0051] Figure 17 This is a schematic diagram of the fourth embodiment of the motor stator provided by the present invention;

[0052] Figure 18 This is a schematic diagram of the structure of the second embodiment of the cover plate provided by the present invention;

[0053] Figure 19 This is a schematic diagram of the structure of a second embodiment of the end-panel assembly provided by the present invention;

[0054] Figure 20 Provided by the present invention Figure 17 Enlarged view of point C in the middle;

[0055] Figure 21 Provided by the present invention Figure 18 Enlarged view of point D in the middle.

[0056] In the picture:

[0057] 1. End plate assembly; 11. Fixing plate; 111. Inner ring; 1111. Wire groove; 1112. First hollow hole; 1113. Positioning protrusion; 1114. Ring groove; 112. Outer ring; 1121. Terminal positioning assembly; 1122. Countersunk hole; 12. Cover plate; 121. Bending protrusion; 122. Second hollow hole; 123. Positioning notch; 124. Pressing notch; 125. Wire threading protrusion; 1251. Wide opening;

[0058] 2. Busbar assembly; 2U, U-phase busbar; 2V, V-phase busbar; 2W, W-phase busbar; 21. Wiring protrusion; 22. Phase wire protrusion; 23. Phase wire terminal;

[0059] 3. Stator support assembly;

[0060] 4. Coil winding; 41. Phase wire terminal; 411. Straight section; 412. Terminal section; 42. Wire terminal;

[0061] 5. Conductor components. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0063] The core of this invention is to provide a stator end wiring device. By setting a groove in the end plate assembly to fix the busbar, and setting wiring protrusions arranged in a ring array in the busbar, and the phase wire protrusions do not overlap along the radial projection of the end plate assembly, the phase wire terminals of the coil winding can be wired in a predetermined order without interfering with each other, keeping the stator end wiring neat, facilitating mechanized automatic wiring, and improving production efficiency.

[0064] The second core of this invention is to provide a motor that includes the above-mentioned stator end wiring device, which has the same technical features and can solve the same technical problems.

[0065] Example 1:

[0066] Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, a stator end wiring device is used for end wiring of a motor stator;

[0067] Stator end wiring device, including:

[0068] The end plate assembly 1 includes a connector and several wire grooves 1111, the connector being used for fixed connection with the motor stator;

[0069] Bus assembly 2 includes several busbars, which are arranged one-to-one with the cable trays 1111. Each busbar includes several wiring protrusions 21 and phase line protrusions 22. Both wiring protrusions 21 and phase line protrusions 22 extend to the outside of the cable trays 1111. The wiring protrusions 21 of the same busbar are arranged in a ring array about the axis of the end plate assembly 1. All wiring protrusions 21 and / or phase line protrusions 22 do not overlap when projected radially along the end plate assembly 1.

[0070] like Figure 1 and Figure 3As shown, the end plate assembly 1 is provided with a connector, such as a through hole for bolts to pass through, so that the fixed plate 11 can be fixedly connected to the stator support assembly 3 of the motor stator by bolts. When designing the fixed plate 11, it is preferable that the outer diameter of the fixed plate 11 is not greater than the outer diameter of the motor stator, so that the fixed plate 11 is fixedly set at the end of the motor stator. After the phase wire connection terminal 41 of the vertical winding coil winding 4 extends along the motor axis to the tail, it is bent in the direction of the motor axis, so that it can be fixed with the components in the end plate assembly 1.

[0071] Specifically, the end panel assembly 1 is provided with several wire grooves 1111, and different phase busbars are provided in the wire grooves 1111 respectively. Several wiring protrusions 21 are arranged in a ring array on each busbar, and the wiring protrusions 21 extend to the outside of the wire grooves 1111.

[0072] Therefore, the phase wire terminal 41, after being bent towards the motor axis, can be directly welded to the nearest wiring protrusion 21, thereby shortening the length of the phase wire terminal 41. Furthermore, the terminal segment 412 of the phase wire terminal 41 is directly welded and fixed to the wiring protrusion 21. Thus, the shorter phase wire terminal 41 is fixed by welding the terminal segment 412 to the wiring protrusion 21, thereby fixing the phase wire terminal 41 and ensuring a relatively stable relative position between the phase wire terminal 41 and the end plate assembly 1, preventing different phase wire terminals 41 from contacting and conducting with each other.

[0073] Moreover, the wiring protrusions 21 and / or phase line protrusions 22 of different busbars do not overlap in the radial projection of the end plate assembly 1. That is, when the phase line wiring end 41 extending from the coil winding 4 on the outer periphery of the end plate assembly 1 is bent inward for welding, there will be no mutual interference. By designing the arrangement angle of the busbars, a one-to-one arrangement of the wiring protrusion 21 position and the phase line wiring end 41 position can be achieved, which helps to realize mechanized automatic welding and improve production efficiency.

[0074] In some embodiments, the wire groove 1111 is an arc groove;

[0075] Several wire troughs 1111 have different radii and are arranged concentrically;

[0076] The areas enclosed by the central angles of any two wire grooves 1111 have partially non-overlapping regions.

[0077] like Figure 3 As shown, the cable trough 1111 is an arc-shaped groove. When the busbar is installed into the cable trough 1111, the busbar is fixed, that is, the busbar and the cable trough 1111 have a fixed installation angle, and the angle is unique.

[0078] Moreover, different wire grooves 1111 have the same central angle, and the area enclosed by the central angle partially overlaps. That is, the arrangement angle of different wire grooves 1111 is different. Therefore, different busbars have different installation angles when assembled relative to the end plate assembly 1, that is, staggered installation. This allows the wiring protrusions 21 on different busbars to be staggered, thereby ensuring that the radial projections of different wiring protrusions 21 along the end plate assembly 1 do not overlap.

[0079] In some embodiments, the wire groove 1111 includes a plurality of straight segments that form an angle with each other.

[0080] like Figure 3 As shown, the wire groove 1111 adopts a broken line design, which includes several straight line segments that form an angle with each other;

[0081] like Figure 5 As shown, the busbar in the busbar assembly 2 also adopts a zigzag design. Therefore, after the busbar is assembled into the wire groove 1111, it can be limited at the bend of the zigzag, thereby ensuring that the busbar can have a stable positional relationship in the wire groove 1111.

[0082] In some embodiments, the groove 1111 is an annular groove, and all straight segments within the same groove 1111 have the same length, and the included angle between any two straight segments is equal.

[0083] The lengths of any two straight segments within the trough 1111 are equal, and the included angle between any two straight segments is equal.

[0084] The cable tray 1111 adopts a ring design, which means that when the busbar and the cable tray 1111 are assembled, the appropriate installation position of the busbar can be selected according to the wiring requirements. In other words, the relative position relationship between the busbar and the cable tray 1111 during assembly is not unique, which has higher flexibility. However, after assembly, it is still limited by the broken line design, and the assembled busbar and the cable tray 1111 still have a stable relative position relationship.

[0085] In some embodiments, bus assembly 2 includes a U-phase bus 2U, a V-phase bus 2V, and a W-phase bus 2W;

[0086] There are three sets of cable trays 1111, which are used to assemble the U-phase busbar 2U, the V-phase busbar 2V and the W-phase busbar 2W respectively;

[0087] The starting ends of the U-phase bus 2U, the V-phase bus 2V, and the W-phase bus 2W are arranged sequentially in a counterclockwise direction along the end plate assembly 1, or the starting ends of the U-phase bus 2U, the W-phase bus 2W, and the V-phase bus 2V are arranged sequentially in a counterclockwise direction along the end plate assembly 1.

[0088] like Figure 4 , Figure 5and Figure 6 As shown, taking a three-phase motor as an example, the coil winding 4 includes U-phase coil units, V-phase coil units and W-phase coil units arranged in a counterclockwise direction, while the bus assembly 2 includes W-phase bus 2W, U-phase bus 2U and V-phase bus 2V arranged from the inside to the outside. Their order is different from the coil unit arrangement order in the coil winding 4. The U-phase bus 2U in the middle protrudes from the other two buses, and the arrangement angles of the other two buses are also different. Therefore, under the premise that the arrangement angles of all buses are different, the difference in arrangement angles between the inner and outer busbars is effectively reduced.

[0089] Within different busbars, the position of the phase line protrusion 22 is proportional to the distance between the two ends of the corresponding busbar. Reducing the difference in the arrangement angle of the inner and outer busbars helps to reduce the spacing of the phase line protrusions 22 of the three busbars, thereby making the three phase line terminals 23 have a smaller spacing, which facilitates the wiring of different phase lines of the external power supply.

[0090] In some embodiments, the end plate assembly 1 includes a fixed plate 11 and a cover plate 12;

[0091] The cover plate 12 is used to cover the wire groove 1111, and the cover plate 12 includes a second hollow hole 122 for the wire connection protrusion 21 to pass through. A bending protrusion 121 is provided on the cover plate 12 around the second hollow hole 122 for the wire to bend around the bending protrusion 121 and then contact and conduct with the wire connection protrusion 21.

[0092] like Figure 7 , Figure 8 and Figure 9 As shown, the end plate assembly 1 includes a fixed plate 11 and a cover plate 12. The wire groove 1111 is arranged on the fixed plate 11, while the cover plate 12 covers the wire groove 1111 to prevent the busbar from falling out of the wire groove 1111. At the same time, a second hollow hole 122 is provided on the cover plate 12, which can not only play a role in weight reduction, but also allow the wiring protrusion 21 and / or the phase wire protrusion 22 to extend to the top of the cover plate 12, which facilitates the welding operation of the phase wire terminal 41.

[0093] like Figure 9 As shown, the cover plate 12 is also provided with a bending protrusion 121. The phase wire terminal 41 extends from the coil unit along the motor axis and bends towards the motor axis to form a straight section 411. When the straight section 411 passes the bending protrusion 121, it is bent with the bending protrusion 121 as the bending point to form a connection section 412. The connection section 412 is directly welded to the connection protrusion 21. That is, by setting the bending protrusion 121, a bending support point for the second bend is provided for the mechanized automatic welding of the phase wire terminal 41.

[0094] Furthermore, the bending protrusion 121 and the wiring protrusion 21 are located on both sides of the wiring segment 412, clamping the wiring segment 412 to ensure its positional stability and prevent the wiring segment 412 from detaching from the wiring protrusion 21 due to poor soldering.

[0095] It is worth noting that the entire end plate assembly 1 is made of insulating material, meaning that the wiring segment 412 abuts against the bent protrusion 121 but is not conductive.

[0096] In some embodiments, the inner ring portion of the fixed disk 11 is recessed downward to form an inner ring portion 111, and the non-recessed area forms an outer ring portion 112;

[0097] The cable tray 1111 is arranged in the inner ring 111;

[0098] The outer ring 112 is provided with a countersunk hole 1122. The large diameter portion of the countersunk hole 1122 has a notch on the side near the inner ring 111, so that the head of the bolt assembled in the countersunk hole 1122 can abut and press against the surface of the cover plate 12.

[0099] like Figure 3 As shown, the inner ring 111 of the fixed disk 11 is recessed downwards, and the wire groove 1111 is arranged in the recessed area, thereby fixing the busbar in the recessed area, reducing the occupation of the axial space of the motor, and further reducing the axial length of the motor.

[0100] Meanwhile, the inner ring 111 is completely covered by the cover plate 12, so that the end plate assembly 1 is flat and the stator end is neat. At the same time, by providing a countersunk hole 1122 in the outer ring 112, and providing a notch on the side of the countersunk hole 1122 near the inner ring 111, the bolt head passing through the countersunk hole 1122 can simultaneously press the outer ring 112 and the cover plate 12.

[0101] In some embodiments, such as Figure 10 A pressing notch 124 is provided on the surface of the cover plate 12 at a position corresponding to the countersunk hole 1122. The pressing notch 124 overlaps with the notch of the countersunk hole 1122 to form a complete countersunk hole 1122, so that the cover plate 12 and the outer ring 112 are coplanar with the abutment surface of the bolt head, thereby ensuring the stable pressing of the bolt on the cover plate 12 and the fixed plate 11, so that the two can have a stable relative positional relationship with the stator support assembly 3.

[0102] In some embodiments, the end plate assembly 1 further includes a plurality of terminal positioning components 1121 arranged in a ring array for fixing the wires connected to the bus assembly 2.

[0103] like Figure 8 and Figure 9As shown, the end plate assembly 1 includes a terminal positioning assembly 1121 arranged in a ring array to fix the position of the straight section 411 of the phase line terminal 41, ensuring that the phase line terminal 41 as a whole has a stable relative positional relationship with the end plate assembly 1.

[0104] In some embodiments, the terminal positioning assembly 1121 includes two elastic arms that can approach each other for clamping and fixing the wire between the two elastic arms. The root of the elastic arm is fixedly connected to the end plate assembly 1, the top is a free end, and the top adjacent sides of the two elastic arms are provided with guide slopes.

[0105] like Figure 9 As shown, the terminal positioning assembly 1121 consists of two sets of elastic arms, which allow the phase wire terminal 41 to enter between the two sets of elastic arms from the end, thereby fixing the phase wire terminal 41. Furthermore, a guide slope is provided at the end of the elastic arm to increase the opening size at the end, reduce the difficulty of the phase wire terminal 41 entering between the two sets of elastic arms, and facilitate mechanized processing.

[0106] In some embodiments, the coil unit is wound with flat wire, so that the width of the flat wire abuts against the inner wall of the elastic arm to prevent the phase wire terminal 41 from twisting within the terminal positioning assembly 1121.

[0107] In addition to the stator end wiring device disclosed in the above embodiments, the present invention also provides a motor stator, including a stator support assembly 3, a coil winding 4 and a stator end wiring device of any one of the above.

[0108] The coil windings 4 are arranged in a ring array around the stator support assembly 3, and the end plate assembly 1 is fixedly installed at the axial end of the stator support assembly 3.

[0109] The coil winding 4 includes several winding units, and each winding unit includes a phase line terminal 41. All phase line terminals 41 of different coil windings 4 are connected through the same busbar.

[0110] It is worth noting that the winding unit of the coil winding 4 also includes a wire connection terminal 42. Preferably, the wire connection terminal 42 and the phase wire connection terminal 41 extend in opposite directions along the motor axis, thereby avoiding mutual interference during wiring.

[0111] like Figure 2 As shown, multiple wire terminals 42 within the same coil winding 4 are connected by welding through a conductor assembly 5, and the conductor assembly 5 itself is fixed to the stator support assembly 3.

[0112] The structure of the other parts of the motor stator is described in reference to existing technologies and will not be repeated here.

[0113] In addition to the stator end wiring device and motor stator disclosed in the above embodiments, the present invention also provides a motor that includes the stator end wiring device of any one of the above embodiments or includes the motor stator described above.

[0114] The structure of the other parts of the motor is described in reference to existing technologies and will not be repeated here.

[0115] Example 2:

[0116] Please refer to Figure 1 and Figure 3 An end plate assembly for wiring arrangement at the stator end of a motor;

[0117] The terminal assembly includes a relatively fixed fixed plate 11 and several terminal positioning components 1121;

[0118] Fixed disk 11 includes:

[0119] Several cable trays 1111 are used to accommodate busbar assembly 2;

[0120] Connecting components, used for fixed connection with the motor stator;

[0121] Terminal positioning assembly 1121 is used to fix the wires connected to bus assembly 2.

[0122] like Figure 3 As shown, the end plate assembly 1 includes a fixed plate 11. The fixed plate 11 is provided with connecting parts, such as through holes for bolts to pass through, so that the fixed plate 11 can be fixedly connected to the stator support assembly 3 of the motor stator by bolts. When designing the fixed plate 11, it is preferable that the outer diameter of the fixed plate 11 is not greater than the outer diameter of the motor stator, so that the fixed plate 11 is fixedly set at the end of the motor stator. The phase wire terminal 41 of the vertical winding coil winding 4 extends along the motor axis towards the tail and then bends in the direction of the motor axis, so that it can be fixed with the components in the end plate assembly 1. Specifically, the end plate assembly 1 is provided with a terminal positioning component 1121. When the phase wire terminal 41 is bent in the direction of the motor axis, it can be fixed by the terminal positioning component 1121, so that the phase wire terminal 41 and the end plate assembly 1 have a stable positional relationship.

[0123] Furthermore, the fixed disk 11 is provided with several wire slots 1111, and the busbars in the busbar assembly 2 are arranged corresponding to the wire slots 1111. Taking the position of a three-phase motor as an example, its three phases are U phase, V phase, and W phase, so the fixed disk 11 is provided with a total of three wire slots 1111. The busbar assembly 2 includes a U phase busbar 2U, a V phase busbar 2V, and a W phase busbar 2W. The coil winding 4 includes three winding units, namely a U phase winding unit, a V phase winding unit, and a W phase winding unit. In the actual production process, the motor stator includes several coil windings 4. Taking three coil windings 4 as an example, a total of three U phases are included in one electronic stator. The phase line terminals 41 of the winding unit, the phase line terminals 41 of the three V-phase winding units, and the phase line terminals 41 of the three W-phase winding units are all welded and connected to the U-phase busbar. The phase line terminals 41 of the three V-phase winding units are all welded and connected to the V-phase busbar. The phase line terminals 41 of the three W-phase winding units are all welded and connected to the W-phase busbar. The U-phase busbar 2U, the V-phase busbar 2V, and the W-phase busbar 2W are respectively provided with phase line terminals 23 of the U-phase, V-phase, and W-phase, which are used to electrically connect to the U-phase, V-phase, and W-phase of the power supply line, respectively.

[0124] Since the busbar is fixedly installed in the wire slot 1111, the busbar and the end plate assembly 1 have a stable relative positional relationship. The phase wire terminal 41 is fixed by the terminal positioning assembly 1121, so the phase wire terminal 41 also has a stable relative positional relationship with the end plate assembly 1. That is, both the busbar and the phase wire terminal 41 have a stable positional relationship with the end plate assembly 1, and there is a stable welding point between the phase wire terminal 41 and the busbar, which facilitates mechanized automatic welding, thereby improving production efficiency and ensuring the neatness of the phase wire arrangement at the end of the motor stator.

[0125] In some embodiments, the groove 1111 is an arc-shaped groove or an annular groove;

[0126] Several wire grooves 1111 have different radii and are arranged concentrically with the fixed plate 11.

[0127] like Figure 1 and Figure 3 As shown, the wire groove 1111 is arranged concentrically with the end plate assembly 1 and the stator support assembly 3, while the coil winding 4 is arranged on the circumferential side of the stator support assembly 3. Therefore, when the busbar is arranged in the wire groove 1111 which is concentrically arranged with the stator support assembly 3, the length of the phase wire terminal 41 can be effectively shortened, thereby reducing the accumulation of windings at the end of the motor stator, reducing the space occupied at the end of the motor stator, reducing the axial length of the motor, and maintaining the neatness of the wiring at the end of the motor stator.

[0128] Meanwhile, the radii of different wire troughs 1111 are not equal, so that multiple wire troughs 1111 can be arranged concentrically, and thus multiple busbars can be arranged concentrically to meet the wiring needs of two-phase or three-phase motor stator ends.

[0129] In some embodiments, the wire groove 1111 includes a plurality of straight segments that form an angle with each other.

[0130] like Figure 3 As shown, the wire groove 1111 adopts a broken line design, which includes several straight line segments that form an angle with each other, and the lengths of any two straight line segments are equal, and the angle between any two straight line segments is equal.

[0131] like Figure 5 As shown, the busbar in the busbar assembly 2 also adopts a zigzag design. Therefore, after the busbar is assembled into the wire groove 1111, it can be limited at the bend of the zigzag, thereby ensuring that the busbar can have a stable positional relationship in the wire groove 1111.

[0132] In some embodiments, the wire trough 1111 is designed to have the same length as the busbar, that is, the wire trough 1111 and the busbar are assembled in a one-to-one correspondence, and the relative positional relationship between the two during assembly is unique.

[0133] In some embodiments, the cable tray 1111 adopts a ring design, that is, when the busbar and the cable tray 1111 are assembled, the appropriate installation position of the busbar can be selected according to the wiring requirements. In other words, the relative positional relationship between the busbar and the cable tray 1111 during assembly is not unique, which has higher flexibility. However, after assembly, it is still limited by the broken line design, and the assembled busbar and the cable tray 1111 still have a stable relative positional relationship.

[0134] In some embodiments, the fixing plate 11 further includes a plurality of first hollow holes 1112, at least one of the first hollow holes 1112 overlapping with all the wire grooves 1111.

[0135] like Figure 4 As shown, the fixed plate 11 is provided with several first hollow holes 1112, which helps to dissipate heat from the busbars inside the fixed plate 11 and achieves the purpose of lightweight design; moreover, at least one first hollow hole 1112 overlaps with all the wire grooves 1111 at the same time, so after the busbar assembly 2 is assembled with the wire grooves 1111, all the busbars are exposed in the first hollow hole 1112. When disassembling and assembling the busbars, all the busbars can be removed simply by passing through the first hollow hole 1112, which improves the convenience of motor maintenance.

[0136] In some embodiments, the end plate assembly further includes a cover plate 12, which is fixedly connected to the fixed plate 11 and is used to cover the opening of the wire groove 1111;

[0137] The cover plate 12 includes a second hollow hole 122 through which the connection end of the coil winding 4 in the motor stator passes, and / or through which the wiring protrusion 21 and / or phase wire protrusion 22 of the bus assembly 2 pass.

[0138] like Figure 7 , Figure 8 and Figure 10 As shown, a cover plate 12 is provided on the fixed plate 11 to cover the opening of the wire groove 1111, so as to prevent the busbar from falling out of the wire groove 1111. Moreover, a second hollow hole 122 is provided on the cover plate 12 so that the phase wire terminal 41 can be welded and connected to the busbar through the second hollow hole 122.

[0139] In some embodiments, the busbar is completely hidden inside the wire groove 1111, that is, below the cover plate 12, and the phase wire terminal 41 needs to pass through the second hollow hole 122 into the wire groove 1111 to be welded to the busbar.

[0140] In some embodiments, such as Figure 6 , Figure 7 and Figure 8 As shown, the busbar is provided with a wiring protrusion 21, which passes through the second hollow hole 122 and is located above the cover plate 12. Therefore, the phase wire terminal 41 can be directly welded to the wiring protrusion 21 for conduction.

[0141] In some embodiments, the fixed disk 11 includes an inner ring portion 111 and an outer ring portion 112 that are coaxially fixed;

[0142] The wire groove 1111 is provided in the inner ring 111;

[0143] The terminal positioning assembly 1121 is fixedly connected to the outer ring 112 and arranged in a ring array;

[0144] The projection of the cover plate 12 and the inner ring 111 along their own axial direction overlaps.

[0145] like Figure 8 As shown, the terminal positioning component 1121 is set in the outer ring 112. The phase wire terminal 41 extends along the motor axis and bends towards the motor axis to form a straight section 411. The terminal positioning component 1121 can fix the straight section 411 of the phase wire terminal 41. The wire groove 1111 is set in the inner ring 111. The end of the phase wire terminal 41 is fixed by the busbar, which realizes the fixation of the phase wire terminal 41 at different positions, thereby ensuring that the phase wire terminal 41 as a whole has a stable relative positional relationship with the end plate component 1, and ensuring that the position of the phase wire terminal 41 is stable during motor operation.

[0146] Example 3:

[0147] Please refer to Figures 11-19As shown, an end plate assembly is used for wiring arrangement at the end of a motor stator;

[0148] The end plate assembly includes a fixed plate 11, which includes:

[0149] Several wire grooves 1111 are used to accommodate busbar assembly 2. Several first hollow holes 1112 are arranged along the length of the same wire groove 1111. The first hollow holes 1112 are connected to the corresponding wire grooves 1111.

[0150] Connector, used for fixed connection with motor stator.

[0151] like Figure 19 As shown, the fixing plate 11 of the end plate assembly 1 is provided with a connector, such as a through hole for bolts to pass through, so that the fixing plate 11 can be fixedly connected to the stator support assembly 3 of the motor stator by bolts. When designing the fixing plate 11, it is preferable that the outer diameter of the fixing plate 11 is not greater than the outer diameter of the motor stator, so that the fixing plate 11 is fixedly set at the end of the motor stator. After the phase wire connection terminal 41 of the vertical winding coil winding 4 extends along the motor axis to the tail, it is bent in the direction of the motor axis, so that it can be fixed with the components in the end plate assembly 1.

[0152] Meanwhile, the first hollow hole 1112 is provided on the fixed plate 11, which can play a role in weight reduction. The first hollow hole 1112 is connected to the wire groove 1111, and the busbar located at the position of the first hollow hole 1112 can be used as the welding position of the phase wire terminal 41, thereby increasing the welding operation space, facilitating mechanized automatic welding, and improving production efficiency. At the same time, the same busbar is provided with several first hollow holes 1112 along the length direction, which can enable the phase wire terminals 41 of the same phase in different coil windings 4 to be welded to the busbars corresponding to different first hollow holes 1112 respectively, thereby reducing the mutual interference of different phase wire terminals 41, ensuring neat wiring at the stator end, and thus reducing the space occupied by the motor axis.

[0153] In some embodiments, the end plate assembly further includes a terminal positioning component 1121 fixed relative to the fixed plate 11. The terminal positioning component 1121 is arranged in a ring array for fixing the wires connected to the bus assembly 2.

[0154] like Figure 19 As shown, the terminal positioning assembly 1121 is arranged in a ring array to directly fix the phase wire terminal 41 extending from the circumference of the fixed plate 11, thereby making the phase wire terminal 41 have a stable relative positional relationship with the fixed plate 11 and the busbar, which is convenient for the robot arm to grasp and weld it to the busbar.

[0155] In some embodiments, the end plate assembly further includes a cover plate 12, which is fixedly connected to the fixed plate 11 and is used to cover the wire groove 1111.

[0156] The cover plate 12 includes a wire-threading channel, which is arranged in a one-to-one correspondence with the first hollow hole 1112.

[0157] like Figure 18 As shown, a cover plate 12 is used to cover the wire trough 1111 to prevent the busbar from falling out of the wire trough 1111 and to ensure its stability. At the same time, a wire passage is provided on the cover plate 12 to facilitate the phase wire terminal 41 to pass through and be welded to the busbar.

[0158] In some embodiments, the cover plate 12 is also provided with a second perforation 122 for heat dissipation of the busbar and lightweight design of the cover plate 12.

[0159] In some embodiments, the cover plate 12 includes a threading protrusion 125, a threading channel passing through the threading protrusion 125, and the entrance end of the threading channel is a wide opening 1251.

[0160] like Figure 18 , Figure 20 and Figure 21 As shown, the cover plate 12 is provided with a wire-passing protrusion 125, and the wire-passing channel passes through the axis of the wire-passing protrusion 125, thereby increasing the length of the wire-passing channel. This allows the phase wire terminal 41 to be guided and fixed radially when passing through the wire-passing channel, ensuring that the phase wire terminal 41 has a stable relative position with the welding position of the busbar after passing through the wire-passing channel. This facilitates mechanized and automated welding production and improves production efficiency.

[0161] like Figure 21 As shown, the cross-section of the wire passage is rectangular, and the opening at the wire inlet is a wide opening 1251. Guide slopes are provided on all four sides to facilitate the quick passage of the phase wire terminal 41 of the flat wire type.

[0162] It is worth noting that, such as Figure 20 As shown, when the phase wire terminal 41 of some flat wire types is welded to the busbar, its contact surface is the side surface in the non-width direction. Therefore, the straight section 411 of the phase wire terminal 41 is twisted to ensure that the side wall in the width direction of the phase wire terminal 41 is clamped by the terminal positioning component 1121 and abuts against the busbar welding position.

[0163] In some embodiments, the cross-section of the wire passage is circular, and the opening at the wire inlet is provided with a beveled surface or an arc surface to facilitate the quick passage of the phase wire terminal 41 of the circular wire type.

[0164] In some embodiments, the fixed disk 11 includes an inner ring portion 111 and an outer ring portion 112;

[0165] The cable tray 1111 is arranged in the inner ring 111;

[0166] The projection of the cover plate 12 and the inner ring 111 along their own axial direction overlaps.

[0167] like Figure 16 and Figure 19 As shown, the fixed disk 11 includes an inner ring portion 111 and an outer ring portion 112. The inner ring portion 111 is recessed downwards, and the wire groove 1111 is arranged in the inner ring portion 111, so that the busbar is accommodated in the recessed area of ​​the fixed disk 11, thereby reducing the axial space occupied by the motor stator and helping to shorten the axial dimension of the motor.

[0168] At the same time, the inner ring 111 is covered by the cover plate 12, that is, the cable tray 1111 is covered to prevent the busbar in the cable tray 1111 from detaching.

[0169] In some embodiments, the fixing disk 11 and the covering disk 12 are provided with interlocking annular grooves 1114 and flanges;

[0170] The fixed plate 11 and the cover plate 12 are provided with positioning protrusions 1113 and positioning recesses 123 that engage with each other.

[0171] like Figure 19 As shown, an annular groove 1114 is provided on the outer periphery of the inner ring 111, which is fitted with the flange on the outer periphery of the cover plate 12 for installation, thereby enabling the cover plate 12 to be snapped and fixed to the fixed plate 11.

[0172] Meanwhile, positioning protrusions 1113 and positioning recesses 123 are provided at corresponding positions on the fixed plate 11 and the cover plate 12 for positioning. The two are installed together to ensure that the relative position of the cover plate 12 and the fixed plate 11 is determined when they are assembled, so that the wire channel corresponds one-to-one with the welding position on the busbar.

[0173] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0174] The stator end wiring device and motor provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A stator end winding device for end winding of a stator of an electric machine, characterized in that The utility model relates to an electric machine stator terminal plate assembly and a manufacturing method thereof, and relates to the technical field of electric machines. The utility model discloses a terminal plate assembly (1) comprising a connecting piece and a plurality of wire slots (1111), wherein the connecting piece is used for fixedly connecting with the electric machine stator. The utility model discloses a busbar assembly (2) comprising a plurality of busbars, wherein the busbars are arranged one by one with the wire slots (1111), the busbar comprises a plurality of wiring protrusions (21) and phase protrusions (22), the wiring protrusions (21) and the phase protrusions (22) all extend to the outside of the wire slot (1111), the wiring protrusions (21) of the same busbar are arranged in a ring array about the axis of the terminal plate assembly (1), and the wiring protrusions (21) and / or the phase protrusions (22) all do not overlap along the radial projection of the terminal plate assembly (1). The terminal plate assembly (1) comprises a fixed disc (11) and a cover disc (12). The cover disc (12) is used for covering the wire slot (1111), and the cover disc (12) comprises a second hollow hole (122) for the wiring protrusion (21) to pass through. The inner ring part of the fixed disc (11) is concave downward to form an inner ring part (111), and the un-concave area forms an outer ring part (112). The wire slot (1111) is arranged in the inner ring part (111). The outer ring part (112) is provided with a countersunk hole (1122), and the large-diameter part of the countersunk hole (1122) is provided with a notch close to one side of the inner ring part (111), so that the head part of the bolt assembled with the countersunk hole (1122) can be abutted and pressed with the surface of the cover disc (12).

2. The stator end-wiring device of claim 1, wherein The wire slot (1111) is an arc-shaped slot. The radii of the plurality of wire slots (1111) are not equal, and the plurality of wire slots (1111) are concentrically arranged. The central angles of any two wire slots (1111) have a partially non-overlapping area.

3. The stator end-wiring device of claim 1, wherein The wire slot (1111) comprises a plurality of straight line segments that are mutually at an angle.

4. The stator end-wiring device of claim 3, wherein The wire slot (1111) is a ring-shaped slot, and all the straight line segments in the same wire slot (1111) are equal in length, and the angles between any two straight line segments are equal.

5. The stator end-wiring device of claim 1, wherein The busbar assembly (2) comprises a U-phase busbar (2U), a V-phase busbar (2V) and a W-phase busbar (2W). The wire slot (1111) has three groups, which are used for assembling the U-phase busbar (2U), the V-phase busbar (2V) and the W-phase busbar (2W) respectively. The starting end of the U-phase busbar (2U), the starting end of the V-phase busbar (2V) and the starting end of the W-phase busbar (2W) are arranged in sequence in the counterclockwise direction of the terminal plate assembly (1), or the starting end of the U-phase busbar (2U), the starting end of the W-phase busbar (2W) and the starting end of the V-phase busbar (2V) are arranged in sequence in the counterclockwise direction of the terminal plate assembly (1).

6. The stator end-wiring device of claim 1, wherein The cover disc (12) is provided with a bending protrusion (121) at the periphery of the second hollow hole (122), which is used for the wire to be bent around the bending protrusion (121) and then contacted and conducted with the wiring protrusion (21).

7. The stator end-winding arrangement of any of claims 1-6, wherein The terminal disc assembly (1) further comprises a plurality of terminal positioning assemblies (1121) arranged in an annular array, used for fixing wires connected with the busbar assembly (2).

8. The stator end-wiring device of claim 7, wherein The terminal positioning assembly (1121) comprises two elastic arms capable of approaching each other, used for clamping and fixing a wire between the two elastic arms, the roots of the elastic arms are fixedly connected with the terminal disc assembly (1), the top portions are free ends, and the adjacent sides of the top portions of the two elastic arms are provided with guide inclined surfaces.

9. An electric machine characterized by A stator end wiring device as claimed in any one of claims 1 to 8.

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