Three-phase symmetrical winding arrangement drive motor and vehicle

Abstract

The application relates to a three-phase symmetrical winding arrangement driving motor and a vehicle, wherein the driving motor can realize the arrangement mode of the terminal representation of the flat wire winding of 54-slot motor 6-layer 1-branch, 2-branch, 3-branch and 6-branch by only carrying out simple line processing at the end through the improved wiring mode in the internal line slot. Based on the arrangement mode, the three-phase symmetrical winding arrangement can be realized, the circulating current among the branches is eliminated, and the alternating current effect caused by the flat wire conductor is reduced. Compared with the prior art, the 1-branch, 2-branch, 3-branch and 6-branch connection can be conveniently carried out, the production line flexibility is maximally improved, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of electric drive, and in particular to a three-phase symmetrical winding drive motor and vehicle. Background Technology

[0002] The drive motor is a crucial component of the power system in new energy vehicles. Generally, drive motors have varying numbers of branches depending on their specific needs. When the number of branches exceeds one, circulating currents can generate additional heat, leading to unnecessary losses and reduced efficiency of the entire drive system. Therefore, it's necessary to avoid circulating currents between branches. For example, a Chinese patent describes a stator assembly, motor, and electric vehicle. The stator assembly includes a stator core and windings. The stator core includes an outer wall and an inner wall facing each other. The inner wall has multiple stator slots, which are spaced apart from each other along the circumference of the stator core. Along the radial direction of the stator core, each stator slot is divided into multiple slot layers; each group of three adjacent stator slots forms a stator slot group. The windings include three-phase windings, which are alternately wound around different stator slot groups along the circumference of the stator core. Each phase winding includes three parallel branches, and these three branches are rotationally symmetrical about the axial direction of the stator core. Based on the stator assembly, the three branches of the in-phase winding can achieve a state of potential balance, so as to avoid circulating current between the branches of the in-phase winding as much as possible.

[0003] In the existing technology, if the drive motor is to achieve different numbers of branches, its wiring is relatively complex. Therefore, if it is to achieve co-production on the same production line, it is often necessary to set up multiple workstations in the wiring process to correspond to products with different numbers of branches, which results in high production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a three-phase symmetrical winding drive motor and vehicle.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A three-phase symmetrical winding drive motor includes a stator and a rotor. The stator has a first end connecting copper plate and a second end connecting copper plate at both ends. The middle section has 54 slots and 6 layers of copper flat wire. Each layer of copper flat wire is arranged along the direction from the first end connecting copper plate to the second end connecting copper plate. Among all the copper flat wires:

[0007] The first layer of slot 1, the second layer of slot 12, the first layer of slot 21, the second layer of slot 29, the first layer of slot 38, the second layer of slot 46, the third layer of slot 1, the fourth layer of slot 12, the third layer of slot 21, the fourth layer of slot 29, the third layer of slot 38, the fourth layer of slot 46, the fifth layer of slot 1, the sixth layer of slot 12, the fifth layer of slot 21, the sixth layer of slot 29, the fifth layer of slot 38, and the sixth layer of slot 46 are connected sequentially.

[0008] The 1st layer of slot 2, the 2nd layer of slot 10, the 1st layer of slot 19, the 2nd layer of slot 30, the 1st layer of slot 39, the 2nd layer of slot 47, the 3rd layer of slot 2, the 4th layer of slot 10, the 3rd layer of slot 19, the 4th layer of slot 30, the 3rd layer of slot 39, the 4th layer of slot 47, the 5th layer of slot 2, the 6th layer of slot 10, the 5th layer of slot 19, the 6th layer of slot 30, the 5th layer of slot 39, and the 6th layer of slot 47 are connected sequentially.

[0009] The 1st layer of slot 3, the 2nd layer of slot 11, the 1st layer of slot 20, the 2nd layer of slot 28, the 1st layer of slot 37, the 2nd layer of slot 48, the 3rd layer of slot 3, the 4th layer of slot 11, the 3rd layer of slot 20, the 4th layer of slot 28, the 3rd layer of slot 37, the 4th layer of slot 48, the 5th layer of slot 3, the 6th layer of slot 11, the 5th layer of slot 20, the 6th layer of slot 28, the 5th layer of slot 37, and the 6th layer of slot 48 are connected sequentially.

[0010] The 6th layer of slot 1, the 5th layer of slot 47, the 6th layer of slot 38, the 5th layer of slot 30, the 6th layer of slot 21, the 5th layer of slot 10, the 4th layer of slot 1, the 3rd layer of slot 47, the 4th layer of slot 38, the 3rd layer of slot 30, the 4th layer of slot 21, the 3rd layer of slot 10, the 2nd layer of slot 1, the 1st layer of slot 47, the 2nd layer of slot 38, the 1st layer of slot 30, the 2nd layer of slot 21, the 1st layer of slot 10, and the 2nd layer of slot 1 are connected sequentially.

[0011] The 6th layer of slot 2, the 5th layer of slot 48, the 6th layer of slot 39, the 5th layer of slot 28, the 6th layer of slot 19, the 5th layer of slot 11, the 4th layer of slot 2, the 3rd layer of slot 48, the 4th layer of slot 39, the 3rd layer of slot 28, the 4th layer of slot 19, the 3rd layer of slot 11, the 2nd layer of slot 2, the 1st layer of slot 48, the 2nd layer of slot 39, the 1st layer of slot 28, the 2nd layer of slot 19, the 1st layer of slot 11, and the 2nd layer of slot 2 are connected sequentially.

[0012] The 6th layer of slot 3, the 5th layer of slot 46, the 6th layer of slot 37, the 5th layer of slot 29, the 6th layer of slot 20, the 5th layer of slot 12, the 4th layer of slot 3, the 3rd layer of slot 46, the 4th layer of slot 37, the 3rd layer of slot 29, the 4th layer of slot 20, the 3rd layer of slot 12, the 2nd layer of slot 3, the 1st layer of slot 46, the 2nd layer of slot 37, the 1st layer of slot 29, the 2nd layer of slot 20, the 1st layer of slot 12, and the 2nd layer of slot 3 are connected in sequence.

[0013] The first layer of slot 1, the first layer of slot 2, the first layer of slot 3, the sixth layer of slot 1, the sixth layer of slot 2, and the sixth layer of slot 3 are all connected to the first end connecting copper plate, and the sixth layer of slot 46, the sixth layer of slot 47, the sixth layer of slot 48, the second layer of slot 1, the second layer of slot 2, and the second layer of slot 3 are all connected to the second end connecting copper plate.

[0014] The first slot, first layer, is connected to the first end connecting copper plate, and the 46th slot, sixth layer, is connected to the second slot, first layer; the 47th slot, sixth layer, is connected to the third slot, first layer; the 48th slot, sixth layer, is connected to the first slot, sixth layer; the first slot, second layer, is connected to the second slot, sixth layer; the second slot, second layer, is connected to the third slot, sixth layer; and the third slot, second layer, is connected to the second end connecting copper plate.

[0015] The first layer of slot 1 and the sixth layer of slot 1 are both connected to the first end connecting copper plate. The sixth layer of slot 48 and the second layer of slot 3 are both connected to the second end connecting copper plate. The sixth layer of slot 46 is connected to the first layer of slot 2. The second layer of slot 1 is connected to the sixth layer of slot 2. The second layer of slot 1 is connected to the sixth layer of slot 2. The second layer of slot 2 is connected to the sixth layer of slot 3.

[0016] The first layer of slot 1, the first layer of slot 2, and the first layer of slot 3 are all connected to the first end connecting copper plate. The second layer of slot 1, the second layer of slot 2, and the second layer of slot 3 are all connected to the second end connecting copper plate. Furthermore, the sixth layer of slot 46 is connected to the sixth layer of slot 1, the sixth layer of slot 47 is connected to the sixth layer of slot 2, and the sixth layer of slot 48 is connected to the sixth layer of slot 3.

[0017] A vehicle comprising a drive motor as described above.

[0018] Compared with existing technologies, this invention has the following advantages: The drive motor, through an improved wiring design within the internal slots, can achieve a 54-slot motor with 6 layers of flat wire windings (1, 2, 3, and 6 branches) with only simple wiring at the ends. This arrangement enables a three-phase symmetrical winding layout, eliminates circulating currents between branches, and reduces AC effects caused by using flat wire conductors. Furthermore, it allows for convenient connection of 1, 2, 3, and 6 branches. For products with different branch numbers, only wiring adjustments at the ends are required, maximizing production line flexibility and reducing production costs. Attached Figure Description

[0019] Figure 1 This is a circuit diagram of Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0021] Figure 3This is a circuit diagram of Embodiment 2 of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0023] Figure 5 This is a circuit diagram of Embodiment 3 of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0025] Figure 7 This is a circuit diagram of Embodiment 4 of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of Embodiment 4 of the present invention. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0028] A three-phase symmetrical winding drive motor includes a stator and a rotor. The stator has a first end connecting copper plate and a second end connecting copper plate at both ends. The middle section has 54 slots and 6 layers of copper flat wire. Each layer of copper flat wire is arranged along the direction from the first end connecting copper plate to the second end connecting copper plate. Among all the copper flat wires:

[0029] The first layer of slot 1, the second layer of slot 12, the first layer of slot 21, the second layer of slot 29, the first layer of slot 38, the second layer of slot 46, the third layer of slot 1, the fourth layer of slot 12, the third layer of slot 21, the fourth layer of slot 29, the third layer of slot 38, the fourth layer of slot 46, the fifth layer of slot 1, the sixth layer of slot 12, the fifth layer of slot 21, the sixth layer of slot 29, the fifth layer of slot 38, and the sixth layer of slot 46 are connected sequentially.

[0030] As shown in Table 1, this part constitutes branch U1.

[0031] Table 1

[0032]

[0033] The 1st layer of slot 2, the 2nd layer of slot 10, the 1st layer of slot 19, the 2nd layer of slot 30, the 1st layer of slot 39, the 2nd layer of slot 47, the 3rd layer of slot 2, the 4th layer of slot 10, the 3rd layer of slot 19, the 4th layer of slot 30, the 3rd layer of slot 39, the 4th layer of slot 47, the 5th layer of slot 2, the 6th layer of slot 10, the 5th layer of slot 19, the 6th layer of slot 30, the 5th layer of slot 39, and the 6th layer of slot 47 are connected sequentially.

[0034] As shown in Table 2, this part constitutes the U2 branch.

[0035] Table 2

[0036]

[0037] The 1st layer of slot 3, the 2nd layer of slot 11, the 1st layer of slot 20, the 2nd layer of slot 28, the 1st layer of slot 37, the 2nd layer of slot 48, the 3rd layer of slot 3, the 4th layer of slot 11, the 3rd layer of slot 20, the 4th layer of slot 28, the 3rd layer of slot 37, the 4th layer of slot 48, the 5th layer of slot 3, the 6th layer of slot 11, the 5th layer of slot 20, the 6th layer of slot 28, the 5th layer of slot 37, and the 6th layer of slot 48 are connected sequentially.

[0038] As shown in Table 3, this part constitutes the U3 branch.

[0039] Table 3

[0040]

[0041] The 6th layer of slot 1, the 5th layer of slot 47, the 6th layer of slot 38, the 5th layer of slot 30, the 6th layer of slot 21, the 5th layer of slot 10, the 4th layer of slot 1, the 3rd layer of slot 47, the 4th layer of slot 38, the 3rd layer of slot 30, the 4th layer of slot 21, the 3rd layer of slot 10, the 2nd layer of slot 1, the 1st layer of slot 47, the 2nd layer of slot 38, the 1st layer of slot 30, the 2nd layer of slot 21, the 1st layer of slot 10, and the 2nd layer of slot 1 are connected sequentially.

[0042] As shown in Table 4, this part constitutes the U4 branch.

[0043] Table 4

[0044]

[0045] The 6th layer of slot 1, the 5th layer of slot 47, the 6th layer of slot 38, the 5th layer of slot 30, the 6th layer of slot 21, the 5th layer of slot 48, the 6th layer of slot 39, the 5th layer of slot 28, the 6th layer of slot 19, the 5th layer of slot 11, the 4th layer of slot 2, the 3rd layer of slot 48, the 4th layer of slot 39, the 3rd layer of slot 28, the 4th layer of slot 19, the 3rd layer of slot 11, the 2nd layer of slot 2, the 1st layer of slot 48, the 2nd layer of slot 39, the 1st layer of slot 28, the 2nd layer of slot 19, the 1st layer of slot 11, and the 2nd layer of slot 2 are connected sequentially.

[0046] As shown in Table 5, this part constitutes the U5 branch.

[0047] Table 5

[0048]

[0049] The 6th layer of slot 1, the 5th layer of slot 47, the 6th layer of slot 38, the 5th layer of slot 30, the 6th layer of slot 21, the 5th layer of slot 3, the 5th layer of slot 46, the 6th layer of slot 37, the 5th layer of slot 29, the 6th layer of slot 20, the 5th layer of slot 12, the 4th layer of slot 3, the 3rd layer of slot 46, the 4th layer of slot 37, the 3rd layer of slot 29, the 4th layer of slot 20, the 3rd layer of slot 12, the 2nd layer of slot 3, the 1st layer of slot 46, the 2nd layer of slot 37, the 1st layer of slot 29, the 2nd layer of slot 20, the 1st layer of slot 12, and the 2nd layer of slot 3 are connected sequentially.

[0050] As shown in Table 6, this part constitutes the U6 branch.

[0051] Table 6

[0052]

[0053] In Example 1, as Figure 1 and Figure 2 As shown, the 6th layer of slot 1, the 5th layer of slot 47, the 6th layer of slot 38, the 5th layer of slot 30, the 1st layer of slot 21, the 1st layer of slot 2, the 1st layer of slot 3, the 6th layer of slot 1, the 6th layer of slot 2, and the 6th layer of slot 3 are all connected to the first end connecting copper plate, and the 6th layer of slot 46, the 6th layer of slot 47, the 6th layer of slot 48, the 2nd layer of slot 1, the 2nd layer of slot 2, and the 2nd layer of slot 3 are all connected to the second end connecting copper plate. Figure 2 Hehe Figure 3 The diagram shows the U-phase. Based on the 6 branches of the U-phase, the V-phase and W-phase can be arranged with a phase difference of 120 electrical degrees.

[0054] This technology enables the parallel connection of six branches in a 54-slot, 6-pole, 6-layer flat wire motor. When three-phase current is applied, a rotating magnetic field is formed, and six wire types are available. It provides a flat wire winding arrangement with a terminal representation of 54 slots and 6 branches (i.e., six branches in the motor). Based on this flat wire winding arrangement, a three-phase symmetrical winding arrangement can be achieved, eliminating circulating currents between branches. This minimizes the adverse effects of using flat wire technology while considering cost and performance for mass production.

[0055] In Example 2, as Figure 3 and Figure 4As shown, the first layer of slot 1 connects to the first end connecting copper plate, and the sixth layer of slot 46 connects to the first layer of slot 2, the sixth layer of slot 47 connects to the first layer of slot 3, the sixth layer of slot 48 connects to the sixth layer of slot 1, the second layer of slot 1 connects to the sixth layer of slot 2, the second layer of slot 2 connects to the sixth layer of slot 3, and the second layer of slot 3 connects to the second end connecting copper plate. This configuration allows for the terminal performance of a single branch of a 54-slot, 6-pole motor with 6 layers of flat wire. The introduction of three-phase current creates a rotating magnetic field, achieving a symmetrical three-phase winding arrangement, eliminating circulating current between branches, and without increasing the wire profile. This helps reduce the adverse effects of using flat wire technology and improves production flexibility.

[0056] In Example 3, as Figure 5 and Figure 6 As shown, the first layer of slot 1 and the sixth layer of slot 1 are both connected to the first end connecting copper plate, the sixth layer of slot 48 and the second layer of slot 3 are both connected to the second end connecting copper plate, and the sixth layer of slot 46 is connected to the first layer of slot 2, the second layer of slot 1 is connected to the sixth layer of slot 2, the second layer of slot 1 is connected to the sixth layer of slot 2, and the second layer of slot 2 is connected to the sixth layer of slot 3. This configuration enables the two-branch terminal behavior of a 54-slot 6-pole motor with 6 layers of flat wire. The introduction of three-phase current creates a rotating magnetic field, achieving a three-phase symmetrical winding arrangement, eliminating circulating current between branches, and without increasing the wire profile. This helps reduce the adverse effects of using flat wire technology and improves production flexibility.

[0057] In Example 4, as Figure 7 and Figure 8 As shown, the first layer of slot 1, the first layer of slot 2, and the first layer of slot 3 are all connected to the first end connecting copper plate; the second layer of slot 1, the second layer of slot 2, and the second layer of slot 3 are all connected to the second end connecting copper plate; and the sixth layer of slot 46 is connected to the sixth layer of slot 1, the sixth layer of slot 47 is connected to the sixth layer of slot 2, and the sixth layer of slot 48 is connected to the sixth layer of slot 3. This configuration enables a 54-slot, 6-pole motor with 6 layers of flat wire in 3 branches, achieving a rotating magnetic field when three-phase current is applied, thus realizing a symmetrical three-phase winding arrangement, eliminating circulating current between branches, and without increasing the wire profile. This helps reduce the adverse effects of using flat wire technology and improves production flexibility.

[0058] The aforementioned drive motor can be applied to vehicles with four wheels, three wheels, or more wheels, with four wheels being preferred. Another embodiment of this application provides a vehicle that includes the drive motor described above.

Claims

1. A three-phase symmetrical winding drive motor, comprising a stator and a rotor, characterized in that, The stator has a first end connecting copper plate and a second end connecting copper plate at both ends, and a middle section with 54 slots and 6 layers of copper flat wire. The layers of copper flat wire are arranged along the direction from the first end connecting copper plate to the second end connecting copper plate. Among all the copper flat wires: The first layer of slot 1, the second layer of slot 12, the first layer of slot 21, the second layer of slot 29, the first layer of slot 38, the second layer of slot 46, the third layer of slot 1, the fourth layer of slot 12, the third layer of slot 21, the fourth layer of slot 29, the third layer of slot 38, the fourth layer of slot 46, the fifth layer of slot 1, the sixth layer of slot 12, the fifth layer of slot 21, the sixth layer of slot 29, the fifth layer of slot 38, and the sixth layer of slot 46 are connected sequentially. The 1st layer of slot 2, the 2nd layer of slot 10, the 1st layer of slot 19, the 2nd layer of slot 30, the 1st layer of slot 39, the 2nd layer of slot 47, the 3rd layer of slot 2, the 4th layer of slot 10, the 3rd layer of slot 19, the 4th layer of slot 30, the 3rd layer of slot 39, the 4th layer of slot 47, the 5th layer of slot 2, the 6th layer of slot 10, the 5th layer of slot 19, the 6th layer of slot 30, the 5th layer of slot 39, and the 6th layer of slot 47 are connected sequentially. The 1st layer of slot 3, the 2nd layer of slot 11, the 1st layer of slot 20, the 2nd layer of slot 28, the 1st layer of slot 37, the 2nd layer of slot 48, the 3rd layer of slot 3, the 4th layer of slot 11, the 3rd layer of slot 20, the 4th layer of slot 28, the 3rd layer of slot 37, the 4th layer of slot 48, the 5th layer of slot 3, the 6th layer of slot 11, the 5th layer of slot 20, the 6th layer of slot 28, the 5th layer of slot 37, and the 6th layer of slot 48 are connected sequentially. The 6th layer of slot 1, the 5th layer of slot 47, the 6th layer of slot 38, the 5th layer of slot 30, the 6th layer of slot 21, the 5th layer of slot 10, the 4th layer of slot 1, the 3rd layer of slot 47, the 4th layer of slot 38, the 3rd layer of slot 30, the 4th layer of slot 21, the 3rd layer of slot 10, the 2nd layer of slot 1, the 1st layer of slot 47, the 2nd layer of slot 38, the 1st layer of slot 30, the 2nd layer of slot 21, the 1st layer of slot 10, and the 2nd layer of slot 1 are connected sequentially. The 6th layer of slot 2, the 5th layer of slot 48, the 6th layer of slot 39, the 5th layer of slot 28, the 6th layer of slot 19, the 5th layer of slot 11, the 4th layer of slot 2, the 3rd layer of slot 48, the 4th layer of slot 39, the 3rd layer of slot 28, the 4th layer of slot 19, the 3rd layer of slot 11, the 2nd layer of slot 2, the 1st layer of slot 48, the 2nd layer of slot 39, the 1st layer of slot 28, the 2nd layer of slot 19, the 1st layer of slot 11, and the 2nd layer of slot 2 are connected sequentially. The 6th layer of slot 3, the 5th layer of slot 46, the 6th layer of slot 37, the 5th layer of slot 29, the 6th layer of slot 20, the 5th layer of slot 12, the 4th layer of slot 3, the 3rd layer of slot 46, the 4th layer of slot 37, the 3rd layer of slot 29, the 4th layer of slot 20, the 3rd layer of slot 12, the 2nd layer of slot 3, the 1st layer of slot 46, the 2nd layer of slot 37, the 1st layer of slot 29, the 2nd layer of slot 20, the 1st layer of slot 12, and the 2nd layer of slot 3 are connected in sequence.

2. The three-phase symmetrical winding drive motor according to claim 1, characterized in that, The first layer of slot 1, the first layer of slot 2, the first layer of slot 3, the sixth layer of slot 1, the sixth layer of slot 2, and the sixth layer of slot 3 are all connected to the first end connecting copper plate, and the sixth layer of slot 46, the sixth layer of slot 47, the sixth layer of slot 48, the second layer of slot 1, the second layer of slot 2, and the second layer of slot 3 are all connected to the second end connecting copper plate.

3. A three-phase symmetrical winding drive motor according to claim 1, characterized in that, The first slot, first layer, is connected to the first end connecting copper plate, and the 46th slot, sixth layer, is connected to the second slot, first layer; the 47th slot, sixth layer, is connected to the third slot, first layer; the 48th slot, sixth layer, is connected to the first slot, sixth layer; the first slot, second layer, is connected to the second slot, sixth layer; the second slot, second layer, is connected to the third slot, sixth layer; and the third slot, second layer, is connected to the second end connecting copper plate.

4. A three-phase symmetrical winding drive motor according to claim 1, characterized in that, The first layer of slot 1 and the sixth layer of slot 1 are both connected to the first end connecting copper plate. The sixth layer of slot 48 and the second layer of slot 3 are both connected to the second end connecting copper plate. The sixth layer of slot 46 is connected to the first layer of slot 2. The second layer of slot 1 is connected to the sixth layer of slot 2. The second layer of slot 1 is connected to the sixth layer of slot 2. The second layer of slot 2 is connected to the sixth layer of slot 3.

5. A three-phase symmetrical winding drive motor according to claim 1, characterized in that, The first layer of slot 1, the first layer of slot 2, and the first layer of slot 3 are all connected to the first end connecting copper plate. The second layer of slot 1, the second layer of slot 2, and the second layer of slot 3 are all connected to the second end connecting copper plate. Furthermore, the sixth layer of slot 46 is connected to the sixth layer of slot 1, the sixth layer of slot 47 is connected to the sixth layer of slot 2, and the sixth layer of slot 48 is connected to the sixth layer of slot 3.

6. A vehicle, characterized in that, Includes the drive motor as described in any one of claims 1-5.

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