Permanent magnet synchronous motor without junction box

Abstract

The utility model discloses a permanent magnet synchronous motor without a junction box, which comprises a cylindrical casing, a detachable end cover assembly is arranged on the end face of the casing, a detachable control assembly is arranged on the end face of the end cover assembly, and the end cover assembly and the control assembly are distributed along the axial direction of the casing. The end cover assembly comprises a disc-shaped end cover disc body and a box-shaped hollow end cover box body, and the end cover disc body and the end cover box body are of an integrated structure. The casing, the end cover assembly and the control assembly of the permanent magnet synchronous motor without the junction box adopt an axial distribution structure, so that the longitudinal space occupancy is small, and the arrangement of a main engine plant is facilitated. The three-phase wire of the motor is directly connected with the wire holder in the control assembly through the connecting copper bar, so that a junction box and a wiring cable are not needed any more, the cost is reduced, the structure is more compact, and the risk of water leakage is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of permanent magnet synchronous machines, more exactly, a kind of permanent magnet synchronous machine without terminal box. BACKGROUND

[0002] The existing permanent magnet synchronous machine generally adopts traditional terminal box design, i.e. terminal box is arranged on cylindrical shell, which makes the motor need to occupy larger space in longitudinal direction. It brings many restrictions to the matching design of downstream manufacturers. In addition, the cooling system of the existing permanent magnet synchronous machine adopts single cooling system, for example, the cooling liquid first cools the electric control part, and then cools the motor part, and the cooling efficiency is still not ideal. SUMMARY

[0003] Therefore, it is necessary to provide a permanent magnet synchronous machine without terminal box aiming at the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A two-in-one hydraulic permanent magnet synchronous motor, characterized in that the two-in-one hydraulic permanent magnet synchronous motor comprises a cylindrical shell, a detachable end cover assembly is arranged on the end face of the shell, a detachable control assembly is arranged on the end face of the end cover assembly, and the end cover assembly and the control assembly are distributed along the axial direction of the shell.

[0006] As a preferred embodiment of the utility model, the shell is provided with a first cooling inlet and a first cooling outlet, the control assembly comprises a control shell, the control shell is provided with a second cooling inlet and a second cooling outlet, and the cooling channel between the first cooling inlet and the first cooling outlet is independent of the cooling channel between the second cooling inlet and the second cooling outlet.

[0007] As a preferred embodiment of the utility model, the end cover assembly comprises a disc-shaped end cover disc body and a box-shaped hollow end cover box body, and the end cover disc body and the end cover box body are integrated.

[0008] As a preferred embodiment of the utility model, the top of the end cover box body is provided with a first opening, the side of the end cover box body is provided with a second opening, a detachable end cover cover plate is arranged on the first opening, a detachable connecting plate is arranged on the second opening, a motor three-phase connecting seat is arranged in the interior of the end cover box body, a connecting copper bar is arranged on the motor three-phase connecting seat, and the connecting copper bar is directly connected with the terminal block in the control assembly.

[0009] As a preferred embodiment of the present invention, a plurality of casing connecting studs are provided on the circumference of the end surface of the casing, a plurality of disc connecting studs are provided on the circumference of the end cover disc, and the disc connecting studs are connected to the casing connecting studs by screws.

[0010] As a preferred embodiment of the present invention, a wiring hole is provided on the connecting plate, and a sealing groove is provided on the circumference of the wiring hole.

[0011] As a preferred embodiment of the present invention, the connecting copper bus is provided with an insulating rubber.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model provides a permanent magnet synchronous motor without a junction box. The motor's housing, end cap assembly, and control assembly utilize an axially distributed structure, minimizing longitudinal space usage and facilitating layout in the main engine plant. Because the motor's three-phase wires are directly connected to the terminal blocks within the control assembly via copper busbars, the need for a junction box and wiring cables is eliminated, reducing costs, creating a more compact structure, and further minimizing the risk of water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the permanent magnet synchronous motor without a junction box of the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the permanent magnet synchronous motor without a junction box, this time from another perspective;

[0017] Figure 3 for Figure 1 Schematic diagram of the exploded three-dimensional structure of a permanent magnet synchronous motor without a junction box;

[0018] Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure of the end cover assembly;

[0019] Figure 5 for Figure 4 A schematic diagram of the three-dimensional structure of the end cover assembly;

[0020] Figure 6 for Figure 3A perspective view of the connection plate of the permanent magnet synchronous motor without terminal box in the figure;

[0021] Figure 7 A perspective view of the connection plate of the permanent magnet synchronous motor without terminal box in the figure; Figure 6 A perspective view of the connection plate of the permanent magnet synchronous motor without terminal box in the figure;

[0022] Figure 8 A perspective view of the connection plate of the permanent magnet synchronous motor without terminal box in the figure; Figure 1 A perspective view of the connection plate of the permanent magnet synchronous motor without terminal box in the figure;

[0023] Figure 9 A perspective view of the connection plate of the permanent magnet synchronous motor without terminal box in the figure; Figure 8 A perspective view of the connection plate of the permanent magnet synchronous motor without terminal box in the figure;

[0024] The mark in the figure is as follows: 1, casing; 10, casing connecting stud; 11, first cooling inlet; 12, first cooling outlet; 13, motor three-phase connection seat; 131, connecting copper bar; 1311, insulating rubber; 2, end cover assembly; 21, end cover disc body; 211, disc body connecting stud; 22, end cover box body; 221, first opening; 222, second opening; 23, end cover cover plate; 3, control assembly; 30, control casing; 31, second cooling inlet; 32, second cooling outlet; 5, connection plate; 51, wiring hole; 511, sealing groove; 6, screw rod. DETAILED DESCRIPTION

[0025] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0026] As Figures 1 to 3 shown, the permanent magnet synchronous motor without terminal box comprises a cylindrical casing 1, the end face of the casing 1 is provided with a detachable end cover assembly 2, the end face of the end cover assembly 2 is provided with a detachable control assembly 3, and the end cover assembly 2 and the control assembly 3 are distributed along the axial direction of the casing 1.

[0027] The casing 1 is provided with a first cooling inlet 11 and a first cooling outlet 12, and the control assembly 3 comprises a control casing 30, the control casing 30 is provided with a second cooling inlet 31 and a second cooling outlet 32, and the cooling channel between the first cooling inlet 11 and the first cooling outlet 12 is independent of the cooling channel between the second cooling inlet 31 and the second cooling outlet 32.

[0028] It should be noted that the end face of the casing 1 is provided with a plurality of casing connecting studs 10, and the periphery of the end cover disc body 21 is provided with a plurality of disc body connecting studs 211, and the disc body connecting studs 211 and the casing connecting studs 10 are connected through a screw rod 6.

[0029] AsFigure 4 and Figure 5 As shown in the figure, the end cover assembly 2 comprises a disc-shaped end cover disc 21 and a box-shaped hollow end cover box 22, which are integrated structures.

[0030] The top of the end cover box 22 is provided with a first opening 221, and the side of the end cover box 22 is provided with a second opening 222. The first opening 221 is provided with a detachable end cover cover plate 23, and the second opening 222 is provided with a detachable connecting plate 5. The inside of the end cover box 22 is provided with a motor three-phase connecting seat 13, and the connecting copper bar 131 on the motor three-phase connecting seat 13 is directly connected with the terminal block in the control assembly 3.

[0031] It should be noted that the connecting copper bar 131 is provided with an insulating rubber 1311, thereby improving the insulation performance.

[0032] As shown in the figure, Figure 6 and Figure 7 The connecting plate 5 is provided with a wiring hole 51, and the periphery of the wiring hole 51 is provided with a sealing groove 511. A rubber sealing ring is arranged in the sealing groove 511.

[0033] The assembly method of the permanent magnet synchronous motor without junction box will be described below.

[0034] As shown in the figure, Figure 8 and Figure 9 The end of the motor three-phase wire in the casing 1 is directly connected with the motor three-phase connecting seat 13, so that the motor three-phase wire is directly connected with the terminal block (not shown in the figure) in the control assembly 3 through the connecting copper bar 131. In this way, the junction box and the junction cable are no longer needed, the cost is reduced, the structure is more compact, and the risk of water leakage is further reduced.

[0035] In addition, the cooling channels between the first cooling inlet 11 and the first cooling outlet 12 and the cooling channels between the second cooling inlet 31 and the second cooling outlet 32 are independent of each other, and the cooling channels of the casing 1 and the control casing 30 are completely independent, thereby further providing the cooling performance.

[0036] In addition, the casing 1, the end cover assembly 2 and the control assembly 3 of the permanent magnet synchronous motor without junction box adopt an axial distribution structure, have a small longitudinal space occupancy, are more conducive to the layout of the main machine factory, and have strong practicability.

[0037] Obviously, the above-described embodiments are only some of the embodiments of the present application, not all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application.

Claims

1. A connection box-less permanent magnet synchronous motor, characterized by, The wire-free permanent magnet synchronous motor comprises a cylindrical shell (1), a detachable end cover assembly (2) is arranged on the end face of the shell (1), a detachable control assembly (3) is arranged on the end face of the end cover assembly (2), and the end cover assembly (2) and the control assembly (3) are distributed along the axial direction of the shell (1).

2. The connection box-less permanent magnet synchronous motor according to claim 1, characterized by, The shell (1) is provided with a first cooling inlet (11) and a first cooling outlet (12), the control assembly (3) comprises a control shell (30), the control shell (30) is provided with a second cooling inlet (31) and a second cooling outlet (32), and the cooling channel between the first cooling inlet (11) and the first cooling outlet (12) is independent of the cooling channel between the second cooling inlet (31) and the second cooling outlet (32).

3. The connection box-less permanent magnet synchronous motor of claim 1, wherein, The end cover assembly (2) comprises a disc-shaped end cover disc body (21) and a box-shaped hollow end cover box body (22), and the end cover disc body (21) and the end cover box body (22) are integrated.

4. The connection box-less permanent magnet synchronous motor according to claim 3, characterized by, A first opening (221) is arranged on the top of the end cover box body (22), a second opening (222) is arranged on the side of the end cover box body (22), a detachable end cover cover plate (23) is arranged on the first opening (221), a detachable connecting plate (5) is arranged on the second opening (222), a motor three-phase connecting seat (13) is arranged in the end cover box body (22), a connecting copper bar (131) is arranged on the motor three-phase connecting seat (13), and the connecting copper bar (131) is directly connected with a terminal block in the control assembly (3).

5. The connection box-less permanent magnet synchronous motor according to claim 3, characterized by, A plurality of shell connecting studs (10) are arranged on the end face of the shell (1) in the circumferential direction, a plurality of disc body connecting studs (211) are arranged on the end cover disc body (21) in the circumferential direction, and the disc body connecting studs (211) and the shell connecting studs (10) are connected through a screw rod (6).

6. The connection box-less permanent magnet synchronous motor according to claim 4, characterized by, A wiring hole (51) is arranged on the connecting plate (5), and a sealing groove (511) is arranged on the wiring hole (51) in the circumferential direction.

7. The connection box-less permanent magnet synchronous motor according to claim 4, characterized by, An insulating rubber (1311) is arranged on the connecting copper bar (131).

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