10-pole 60-slot flat wire motor winding structure
Through the symmetrically distributed three-phase flat wire winding structure and four-layer conductor design in each groove, the problem of winding temperature unevenness and automated production is solved, efficient production and current balance of the motor is achieved, and the performance of the motor is improved.
Patent Information
- Application Number
- CN202421715901.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing flat copper wire winding design can easily lead to uneven winding temperature distribution, especially uneven heating of the inner and outer layers, and it is difficult to achieve full automatic production of motor windings.
It adopts a three-phase flat wire winding symmetrically distributed in the circumferential direction, with four layers of conductors in each groove, four branches in each phase connected in series, and adjacent span-layer lines are directly connected. It is suitable for whole-distance or short-distance windings. It adopts the distributed winding form, simplifies the winding structure, reduces cross-bridge lines, and realizes fully automated production.
The winding current balance is achieved, the AC loss is reduced, the heating is not uniform, and the output capacity and production efficiency of the motor are improved.
Smart Images
Figure CN223141640U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of AC motors, and particularly to a flat wire motor winding structure with 10 poles and 60 slots. Background Art
[0002] In the field of AC motors, in order to improve the slot fill factor of the motor and thus improve the motor efficiency, the use of flat copper wire windings has gradually become a trend. However, flat copper wire windings cannot flexibly change the number of turns and the number of parallel branches like round copper wires. Most of them adopt a multiple relationship between the number of layers and the number of parallel branches a. When the number of parallel branches a≥2, if the winding design is not good, it is easy to have circulating current between the currents of each branch, ultimately resulting in serious uneven temperature distribution in the parallel branch windings. Content of the Utility Model
[0003] Aiming at the defects in the prior art, the purpose of the utility model is to provide a flat wire motor winding structure with 10 poles and 60 slots, which can realize the fully automatic unmanned production of the motor winding, while taking into account the current balance of the winding branches, improving the problems of uneven heating of the inner and outer layers of the motor winding and too high temperature of the inner layer, and improving the output capacity of the motor.
[0004] To solve the above technical problems, the utility model provides a flat wire motor winding structure with 10 poles and 60 slots, including three-phase flat wire windings symmetrically distributed in the circumferential direction by phase. Each of the three-phase flat wire windings includes a straight part placed in the iron core slot, a power supply lead-out end, and a non-power supply lead-out end;
[0005] Among them, each slot of the three-phase flat wire windings has four layers of conductors, and each phase of the flat wire windings includes four branches connected in series; power supply lead-out wires, star point wires, and cross-layer wires are provided at the ends of the three-phase flat wire windings, and adjacent cross-layer wires are directly connected.
[0006] Further, the flat wire windings adopt flat copper enameled wires.
[0007] Further, the winding structure adopts a distributed winding form.
[0008] Further, the winding structure is applicable to full pitch windings or short pitch windings.
[0009] Further, the winding structure is applicable to a full pitch winding with Y1 = 6 or a short pitch winding with Y1 = 5.
[0010] Further, the welding end pitches of the flat wire windings are all equal, and the turning angles of each layer are the same.
[0011] Further, the power supply lead-out end is on the same side as the U-Pin end of the flat wire winding, and the welding end of the flat wire winding is located at the non-power supply lead-out end.
[0012] Further, the lead terminals of the power supply lead wire and the star point wire are both located on the first layer and the fourth layer of the flat wire winding.
[0013] Further, the winding structure is applicable to star connection or delta connection.
[0014] Further, the connection mode of the power supply lead wire and the star point wire is applicable to the connection of a single formed special-shaped wire or the connection of a bus bar that is internally connected and plastic-sealed.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. The four-layer winding per slot can meet the external characteristic performance requirements of the motor winding with a series turn number Z = 40 per phase.
[0017] 2. The winding forming wire types are few, and there is no need for complex processes such as wire arranging at the winding end. The formed flat copper wire and the overall end twisting process are directly adopted, and there is no cross-over wire at the twisted end. The mass production process is simple, and the fully automatic unmanned production of the motor winding can be realized. The production line tooling and molds for flaring, twisting, welding, and coating can be saved on the same platform.
[0018] 3. Considering the current balance of the winding branches, the three-phase winding currents can be completely balanced, and the branch currents are completely balanced when each phase has four series branches. The influence of increased winding AC loss caused by unbalanced branch currents is solved, thereby improving the efficiency of the motor, improving the problem of uneven heating of the inner and outer layers of the motor winding and too high inner layer temperature, and improving the output capacity of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes, and advantages of the utility model will become more obvious:
[0020] Figure 1 It is a circuit schematic diagram of a 10-pole 60-slot flat wire motor winding structure provided by an embodiment of the utility model;
[0021] Figure 2 It is an unfolded schematic diagram of the first layer and the second layer windings of a 10-pole 60-slot flat wire motor winding structure provided by an embodiment of the utility model;
[0022] Figure 3 It is an unfolded schematic diagram of the third layer and the fourth layer windings of a 10-pole 60-slot flat wire motor winding structure provided by an embodiment of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.
[0024] Embodiment:
[0025] Please refer to Figures 1 - 3 , this embodiment provides a 10-pole 60-slot flat wire motor winding structure, including three-phase flat wire windings symmetrically distributed by phase in the circumferential direction. Each of the three-phase flat wire windings includes a straight part placed in the iron core slot, a power supply lead-out end, and a non-power supply lead-out end; among them, each slot of the three-phase flat wire winding has four layers of conductors, and each phase flat wire winding includes four branches connected in series; at the ends of the three-phase flat wire windings, there are power supply lead-out wires, star point wires, and cross-layer wires, and adjacent cross-layer wires are directly connected. Since there are four layers of conductors per slot, that is, four layers of windings per slot, therefore, it can match the external characteristic performance requirements of the motor winding with a series turn number Z = 40 per phase; and, since adjacent cross-layer wires are directly connected, therefore, this winding structure is equivalent to having no jumper wires at all, thus achieving effects such as simplifying the layout, reducing the manufacturing cost, reducing overheating problems, effectively utilizing space, and improving the overall reliability. Optionally, there are a total of three three-phase power supply lead-out wires, three star point wires, six series lead wires, and six cross-layer wires spanning from the second layer to the third layer at the ends of the three-phase flat wire windings, without other jumper wires and special-shaped wires.
[0026] In an optional embodiment, the flat wire winding uses flat copper enameled wire. It has excellent electrical conductivity, excellent insulation performance, good mechanical properties, a wide range of applications, a convenient processing technology, and reliable service performance.
[0027] In an optional embodiment, the winding structure adopts a distributed winding form; preferably, a distributed wave winding is used. The winding forming line type is less, and there is no need for complex processes such as wire arranging at the winding end. The forming and turning processes are directly adopted, and there is no jumper wire at the welding end. The mass production processes such as flaring, turning, cutting, welding, and coating are simple, and it can achieve true fully automated unmanned production of the motor winding, saving molds on the same platform.
[0028] In an optional embodiment, the connection method of the power supply lead-out wire and the star point wire is applicable to the connection of a single formed special-shaped wire, and is also applicable to the connection of an internally connected and plastic-sealed busbar.
[0029] In an optional embodiment, the winding structure is applicable to a full pitch winding or a short pitch winding. Preferably, this winding structure is applicable to a full pitch winding with Y1 = 6 or a short pitch winding with Y1 = 5.
[0030] In an alternative embodiment, the pitch of the welding ends of the flat wire windings is all equal, and the twisting angle of each layer is the same, which is convenient for automatic twisting.
[0031] In an alternative embodiment, the power supply lead-out terminal is on the same side as the U-Pin terminal of the flat wire winding, and the welding end of the flat wire winding is located at the non-power supply lead-out terminal. The power supply lead-out terminal being on the same side as the winding U-Pin terminal is to make the connection of the motor more concentrated, which helps to simplify the internal layout of the motor, reduce the length of the connecting wires, and reduce the resistance loss; at the same time, placing the welding end at the non-power supply lead-out terminal can make the welding operation more convenient during the motor assembly process, allowing the welding operation to be carried out outside the motor, reducing the interference to the internal structure of the motor, and also facilitating the operation of the operator, thus improving the production efficiency.
[0032] In an alternative embodiment, both the power supply lead-out terminal and the lead-out terminal of the star point wire are located on the first layer and the fourth layer of the flat wire winding. It is possible to utilize the space of the armature core yoke part or the inner diameter space of the armature winding end part to layout, shortening the overall axial end length of the armature.
[0033] In an alternative embodiment, the winding structure is applicable to the star connection (Y connection) or the delta connection (L connection).
[0034] In a specific embodiment, the above-mentioned 10-pole 60-slot flat wire motor winding structure is a 10-pole 60-slot motor flat copper wire winding structure. Taking the winding expansion diagram with short pitch (Y = 5), parallel branch number a = 1 (that is, four branches in series for each phase), and star connection (Y connection) as an example, the specific implementation method is as follows:
[0035] Straight part: According to the short pitch (Y = 5), the straight part of the three-phase flat copper wire winding is evenly divided into three symmetrical windings, namely the U phase, the V phase, and the W phase.
[0036] As Figure 2 and Figure 3 shown, the winding structure is expanded into a four-layer flat copper enameled wire winding, that is, there are four flat copper wires in each slot number.
[0037] As Figure 1 shown, the winding structure is star (Y) connected, the parallel branch number a = 1, and each phase winding is composed of four branches in series. The four branches are composed of two forward branches and two reverse branches.
[0038] As Figure 2 and Figure 3 shown, the U-phase branch 1 is composed of the forward branch 1 (U1 - U2 - U3 - U4), and the U-phase branch 2 is composed of the reverse branch 2 (X4 - X3 - X2 - X1). The numbers 1, 2, 3, and 4 respectively correspond to the first, second, third, and fourth layer windings in each slot.
[0039] AsFigure 2 As shown in the figure, U1 of the positive branch 1 of the U phase enters from the first layer L1 of slot 2 of winding 2, enters the second layer L2 of slot 7 with a pitch (Y1 = 5), then enters the first layer L1 of slot 14 with a pitch (Y2 = 7), and then enters the second layer L2 of slot 19, the first layer L1 of slot 26, the second layer L2 of slot 31, the first layer L1 of slot 38, the second layer L2 of slot 43, the first layer L1 of slot 50, and the second layer L2 of slot 55 in the same pattern in turn. At this time, to avoid overlapping with the first turn, it needs to skip one slot less and enter the first layer L1 of slot 1, and then enter the second layer L2 of slot 6, the first layer L1 of slot 13, the second layer L2 of slot 18, the first layer L1 of slot 25, the second layer L2 of slot 30, the first layer L1 of slot 37, the second layer L2 of slot 42, the first layer L1 of slot 49, and the second layer L2 of slot 54 in the same pattern as the first turn in turn, and then leads out to U2.
[0040] As Figure 3 shown, similarly, U3 - U4 are in the third and fourth layers of each slot winding, and their connection method is exactly the same as the connection of the first and second layers in the slots where U1 - U2 are located.
[0041] As Figure 1 shown, the positive branch 1 of the U phase is composed of connecting U1 - U2 - U3 - U4 in sequence.
[0042] As Figure 3 shown, X4 of the reverse branch 2 of the U phase enters from the fourth layer L4 of slot 60 of the winding, enters the third layer L3 of slot 55 with a pitch (Y1 = 5), then enters the fourth layer L4 of slot 48 with a pitch (Y2 = 7), and then enters the third layer L3 of slot 43, the fourth layer L4 of slot 36, the third layer L3 of slot 31, the fourth layer L4 of slot 24, the third layer L3 of slot 19, the fourth layer L4 of slot 12, and the third layer L3 of slot 7 in the same pattern in turn. At this time, to avoid overlapping with the first turn, it needs to skip one slot less and enter the fourth layer L4 of slot 1, and then enter the third layer L3 of slot 56, the fourth layer L4 of slot 49, the third layer L3 of slot 44, the fourth layer L4 of slot 37, the third layer L3 of slot 32, the fourth layer L4 of slot 25, the third layer L3 of slot 20, the fourth layer L4 of slot 13, and the third layer L3 of slot 8 in the same pattern as the first turn in turn, and then leads out to X3.
[0043] As Figure 2 shown, similarly, X2 - X1 are in the second and first layers of each slot winding, and their connection method is exactly the same as the connection of the fourth and third layers in the slots where X4 - X3 are located.
[0044] As Figure 1 shown, the reverse branch 2 of the U phase is composed of connecting X4 - X3 - X2 - X1 in sequence.
[0045] As Figures 1 - 3As shown, the V-phase branch 1 consists of the forward branch 1 (V1 - V2 - V3 - V4), and the V-phase branch 2 consists of the reverse branch 2 (Y4 - Y3 - Y2 - Y1). The connection method is the same as that of the U-phase.
[0046] As Figures 1 - 3 shown, the W-phase branch 1 consists of the forward branch 1 (W1 - W2 - W3 - W4), and the V-phase branch 2 consists of the reverse branch 2 (Z4 - Z3 - Z2 - Z1). The connection method is the same as that of the U-phase.
[0047] The second and third layers of the lead-out ends at the winding ends are connected by six cross-layer wires (U2 - U3, V2 - V3, W2 - W3, X3 - X2, Y3 - Y2, Z3 - Z2).
[0048] The winding ends U4 - X4, V4 - Y4, and W4 - Z4 are connected.
[0049] The power supply lead-out wires for the U-phase (consisting of U1), V-phase (consisting of V1), and W-phase (consisting of W1) are all led out from the first layer L1 of the winding.
[0050] The star point wires X1 - Y1 - Z1 are all led out from the first layer L1 of the winding.
[0051] Since the cross-layer wire lead-outs are adjacent between layers and are directly connected, there are no jumper wires at all.
[0052] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined arbitrarily with each other.
Claims
1. A flat wire motor winding structure with 10 poles and 60 slots, characterized in that, It includes a three-phase flat wire winding symmetrically and phase-distributed in the circumferential direction. Each of the three-phase flat wire windings includes a straight part placed in the iron core slot, a power supply lead-out terminal, and a non-power supply lead-out terminal. Among them, each slot of the three-phase flat wire windings has four layers of conductors, and each phase of the flat wire winding includes four branches connected in series. The ends of the three-phase flat wire windings are all provided with power supply lead-out wires, star point wires, and cross-layer wires, and adjacent cross-layer wires are directly connected.
2. A 10-pole 60-slot flat wire motor winding structure according to claim 1, wherein The flat wire winding uses flat copper enameled wire.
3. A 10-pole 60-slot flat wire motor winding structure according to claim 2, characterized in that, The winding structure adopts a distributed winding form.
4. A 10-pole 60-slot flat wire motor winding structure according to claim 1, characterized in that, The winding structure is applicable to a full pitch winding or a short pitch winding.
5. A 10-pole 60-slot flat wire motor winding structure according to claim 4, characterized in that, The winding structure is applicable to a full pitch winding with Y1 = 6 or a short pitch winding with Y1 = 5.
6. A 10-pole 60-slot flat wire motor winding structure according to claim 4, characterized in that, The welding end pitches of the flat wire winding are all equal, and the turning angles of each layer are the same.
7. A 10-pole 60-slot flat wire motor winding structure according to claim 1, characterized in that, The power supply lead-out terminal is on the same side as the U-Pin end of the flat wire winding, and the welding end of the flat wire winding is located at the non-power supply lead-out terminal.
8. A 10-pole 60-slot flat wire motor winding structure according to claim 1, characterized in that, The lead-out terminals of the power supply lead-out wire and the star point wire are both located on the first layer and the fourth layer of the flat wire winding.
9. A 10-pole 60-slot flat wire motor winding structure according to any one of claims 1 to 8, characterized in that, The winding structure is applicable to a star connection or a delta connection.
10. A 10-pole 60-slot flat wire motor winding structure according to any one of claims 1 to 8, characterized in that, The connection method of the power supply lead-out wire and the star point wire is applicable to the connection of a single formed special-shaped wire or the connection of a mother row that is internally connected and plastic-sealed.