CN111884397A

CN111884397A - Novel coil end wiring structure of permanent magnet motor

Info

Publication number: CN111884397A
Application number: CN202010750639.7A
Authority: CN
Inventors: 朱见昌
Original assignee: Nanjing Diwa Permanent Magnet Technology Co ltd
Current assignee: Nanjing Diwa Permanent Magnet Technology Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2020-11-03

Abstract

The invention discloses a novel coil end part wiring structure of a permanent magnet motor, which comprises a neutral wire, an upper layer edge connecting wire, an upper layer edge lead wire, a lower layer edge lead wire, a coil, an iron core, a base plate, a binding belt (rope), a lead wire and a lower layer edge connecting wire. The coil is embedded in the iron core, the lower layer side lead is connected with the lower layer side connecting wire and then directly fixed at the end part of the coil, and the upper layer side lead is connected with the neutral wire, the upper layer side connecting wire and the leading wire and then fixed at the end part of the coil and is positioned at the radial inner side position of the iron core. The lower layer side lead and the lower layer side connecting wire are connected and fixed without forming intersection and lamination; the upper layer side lead wire is fixedly connected with the neutral wire, the upper layer side connecting wire and the lead wire, and then no cross and axial lamination is formed, so that the axial space of the end part of the motor winding can be reduced, and the overall dimension of the motor can be shortened; the operation space of the wiring process is enlarged; the loss and the heat generation of the connecting wire part are reduced, the performance and the stability of the motor are improved, and the cost is reduced.

Description

Novel coil end wiring structure of permanent magnet motor

Technical Field

The invention relates to a novel coil end wiring structure of a permanent magnet motor, in particular to a permanent magnet synchronous direct-drive motor coil end wiring structure adopting a formed coil.

Background

At present, the windings of medium and large-sized high and low voltage permanent magnet motors in China are usually formed coils due to the requirements of electromagnetic and insulation design. For the formed coil, the coil is generally manufactured by a process of wrapping an insulating material according to different voltage levels. After the coils are finished, the coils are embedded into the iron core for wiring, and when the coils are wired, a large amount of axial space is needed for the end part of the motor winding so as to arrange neutral wires, lead wires, connecting wires and motor lead wires of the motor winding, and finally, the coils are dipped in paint and dried, and finally, the insulation treatment of the motor winding is finished.

In recent years, in the motor industry, the structural form of directly driving a load by using a permanent magnet synchronous direct drive motor is more and more extensive, and the permanent magnet synchronous direct drive motor has the advantages of high overall efficiency, low maintenance, high overload starting capability and the like, but compared with the scheme of driving an acceleration and deceleration machine of a conventional motor, the permanent magnet synchronous direct drive motor is larger in size, heavier in weight and higher in cost. Some users have certain requirements on the overall size of the motor, the weight of the motor and the heat dissipation of a motor winding on site, and when a permanent magnet synchronous direct drive motor driving scheme is selected, inconvenience is caused to the use and the operation of the users, so that the overall use cost and the efficiency of user equipment are influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a novel coil end wiring structure of a permanent magnet motor.

One of the technical schemes adopted by the invention is as follows: a novel coil end part wiring structure of a permanent magnet motor comprises an upper layer edge connecting wire, an upper layer edge lead wire, a lower layer edge lead wire, a coil, an iron core, a base plate, a binding belt, a lead wire and a lower layer edge connecting wire; the coil is embedded into the iron core, the lower layer side lead is connected with the lower layer side connecting wire, the upper layer side lead is connected with the upper layer side connecting wire and the leading wire, the upper layer side connecting wire and the leading wire are fixed on the end part of the coil through the backing plate and the binding belt, and the whole insulation treatment is carried out.

The scheme is directed to a motor without a neutral line, and in the scheme, the lower layer side lead is directly fixed at the end part of the coil after being connected with the lower layer side connecting wire; and the upper layer side lead is connected with the upper layer side connecting wire and the lead wire, then is fixed on the end part of the coil and is positioned at the radial inner side of the iron core.

The second technical scheme adopted by the invention is as follows: the wiring structure comprises a neutral wire, an upper layer edge connecting wire, an upper layer edge lead wire, a lower layer edge lead wire, a coil, an iron core, a base plate, a binding belt, a lead wire and a lower layer edge connecting wire; the coil is embedded into the iron core, the lower layer of edge lead wire is connected with the lower layer of edge connecting wire, the upper layer of edge lead wire is connected with the neutral wire, the upper layer of edge connecting wire and the lead wire, the neutral wire, the upper layer of edge connecting wire and the lead wire are fixed on the end part of the coil through the backing plate and the binding belt, and the whole insulation treatment is carried out.

The scheme is directed to a motor with a neutral line, and in the scheme, the lower layer side lead is directly fixed at the end part of a coil after being connected with a lower layer side connecting wire; and the upper layer side lead is connected with the neutral line, the upper layer side connecting line and the lead wire, then fixed on the end part of the coil and positioned at the radial inner side of the iron core.

The invention has the beneficial effects that: by adopting the technical scheme of the invention, the lower layer side lead and the lower layer side connecting wire are connected and fixed without forming intersection and lamination; the upper layer side lead is connected and fixed with the neutral line, the upper layer side connecting line and the lead wire without forming cross and axial lamination. On the basis of ensuring enough electrical safety distance and operation space, the invention can reduce a large amount of axial space of the winding end part of the motor, thereby shortening the length size of the motor base, reducing the manufacturing cost of the base and further shortening the overall dimension of the motor; the motor winding has the advantages that the connecting wire position of the motor winding is moved from the axial position of the end part of the winding to the radial position, the operation space of the connecting wire process can be enlarged, the radius, the material consumption and the resistance value of the connecting wire position can be reduced, and the neutral wire, the lead wire, the connecting wire and the motor lead wire of the motor winding can be directly cooled for the motor adopting the stator and rotor air gap ventilation, so that the loss and the heat generation of the connecting wire part are reduced, the electrical performance and the stability of the motor can be further improved, and the manufacturing cost is reduced. The requirements of users on the overall dimension of the motor, the weight of the motor and the heat dissipation of the motor winding can be met.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention (with a neutral line); wherein, (A) is a side view, and (B) is a front view.

FIG. 2 is a schematic view of the overall structure of the present invention (no neutral); wherein, (A) is a side view, and (B) is a front view.

Labeled as: 1. a neutral line; 2. an upper layer edge connecting line; 3. an upper layer edge lead; 4. a lower layer side lead; 5. a coil; 6. an iron core; 7. a base plate; 8. a tie-up band (cord); 9. lead wires; 10. and the lower layer edge connecting line.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

As shown in fig. 1 and 2, the novel coil end wiring structure of the permanent magnet motor comprises a neutral line 1, an upper layer side connecting line 2, an upper layer side lead 3, a lower layer side lead 4, a coil 5, an iron core 6, a backing plate 7, a binding belt rope 8, a leading line 9 and a lower layer side connecting line 10. Wherein coil 5 inlays in 6 unshakable in one's determination, directly fixed at 5 tip of coil after lower floor's limit lead wire 4 is connected with lower floor's limit connecting wire 10, and upper strata limit lead wire 3 is connected with neutral conductor 1, upper strata limit connecting wire 2, lead wire 9 simultaneously and is fixed on 5 tip of coil after to be located the radial inboard position of unshakable in one's determination, reuse backing plate 7 and ligature area rope 8 with neutral conductor 1, upper strata limit connecting wire 2, lead wire 9 fix on 5 tip of coil, at last carry out whole insulation processing.

In the present invention, the coil end connection structure may be neutral (fig. 1) and neutral-less (fig. 2).

In conclusion, by adopting the technical scheme of the invention, the lower layer side lead and the lower layer side connecting line are connected and fixed without forming intersection and lamination; the upper layer side lead is connected and fixed with the neutral line, the upper layer side connecting line and the lead wire without forming cross and axial lamination. The motor winding end part connecting wire connecting device can reduce a large amount of axial space of the motor winding end part and move the connecting wire position of the motor winding from the axial position of the winding end part to the radial position.

By adopting the technical scheme of the embodiment, the overall dimension of the motor can be shortened, the operation space of a wiring process is enlarged, and the radius, the material consumption and the resistance value of the position of the connecting wire can be reduced, so that the loss and the heat generation of the connecting wire part are reduced, the electric performance and the stability of the motor can be further improved, and the manufacturing cost is reduced. The requirements of users on the overall dimension of the motor, the weight of the motor and the heat dissipation of the motor winding can be met.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims

1. A novel coil end wiring structure of a permanent magnet motor is characterized by comprising an upper layer side connecting wire (2), an upper layer side lead (3), a lower layer side lead (4), a coil (5), an iron core (6), a backing plate (7), a binding tape (8), a lead wire (9) and a lower layer side connecting wire (10); wherein, coil (5) are inlayed in iron core (6), lower floor's limit lead wire (4) is connected with lower floor's limit connecting wire (10), upper strata limit lead wire (3) are connected with upper strata limit connecting wire (2), lead wire (9) to fix upper strata limit connecting wire (2), lead wire (9) on coil (5) tip through backing plate (7) and ligature area (8), and carry out whole insulation processing.

2. The novel coil end connection structure of the permanent magnet motor according to claim 1, wherein the lower layer side lead (4) is directly fixed at the end of the coil (5) after being connected with the lower layer side connection wire (10); and the upper layer side lead (3) is connected with the upper layer side connecting wire (2) and the lead wire (9) and then fixed on the end part of the coil (5) and is positioned at the radial inner side position of the iron core.

3. A novel coil end wiring structure of a permanent magnet motor is characterized by comprising a neutral wire (1), an upper layer side connecting wire (2), an upper layer side lead (3), a lower layer side lead (4), a coil (5), an iron core (6), a backing plate (7), a binding tape (8), a lead wire (9) and a lower layer side connecting wire (10); wherein, coil (5) are inlayed in iron core (6), lower floor's limit lead wire (4) is connected with lower floor's limit connecting wire (10), upper strata limit lead wire (3) are connected with neutral conductor (1), upper strata limit connecting wire (2), lead wire (9) to fix neutral conductor (1), upper strata limit connecting wire (2), lead wire (9) on coil (5) tip through backing plate (7) and ligature area (8), and carry out whole insulation processing.

4. The novel coil end connection structure of the permanent magnet motor according to claim 3, wherein the lower layer side lead (4) is directly fixed at the end of the coil (5) after being connected with the lower layer side connection wire (10); and the upper layer side lead (3) is connected with the neutral line (1), the upper layer side connecting line (2) and the lead wire (9) and then fixed on the end part of the coil (5) and is positioned at the radial inner side of the iron core.