Deep sea permanent magnet synchronous motor with controller integrated on motor shell

Abstract

The invention discloses a deep sea permanent magnet synchronous motor with a controller integrated on a motor shell, relates to the technical field of permanent magnet synchronous motors, and aims to solve the problems that a permanent magnet synchronous motor body and a controller are separated from each other in the background technology, so that the total weight of the permanent magnet synchronous motor is heavy, the structure of the joint of the body and the controller is complex, and the practicability is low. According to the scheme, the motor comprises a shell, the shell comprises a shell body, a flange fixedly arranged on the inner wall of one end of the shell body and a non-driving end cover fixedly arranged on the inner wall of the shell body, a stator iron core is arranged in the shell body, and a rotor is arranged in the shell body; the rotor comprises a rotor iron core, a first bearing sleeving the outer wall of the rotor iron core, a second bearing sleeving the outer wall of one end of the rotor iron core and a rotor winding arranged on the outer wall of the middle portion of the rotor iron core, and a first isolation ring is arranged on the outer wall of the first bearing. The overall size of the motor can be reduced, the overall weight is reduced, the structure of the joint of the body and the controller is simplified, and practicability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet synchronous motors, and in particular to a deep-sea permanent magnet synchronous motor with a controller integrated on a motor housing. Background Art

[0002] A deep-sea motor is an electric motor that combines a permanent magnet synchronous motor body, a motor controller and other components together. The front section of the permanent magnet synchronous motor housing is installed with motor body components such as the stator and rotor, and the rear section is installed with related components of the controller such as capacitors and IGBTs to achieve heat dissipation, pressure bearing and control of the motor. It runs directly in the deep sea, driving the propeller to drive the vehicle to navigate. The permanent magnet synchronous motor body includes a stator, a rotor, a drive end bearing, a drive end cover, a non-drive end cover, a drive end bearing, a rotary transformer, etc. The controller hardware of the permanent magnet synchronous motor can be divided into two parts: the main power circuit and the control circuit. The main power circuit is mainly based on three-phase inverters, and the control circuit is mainly based on a microcontroller. There are also power drive circuits, voltage and current detection, motor speed detection, temperature measurement modules and communication modules. The motor housing is in direct contact with seawater during actual operation, and some controller components are fixed on the surface of the base, thus solving the problem of controller heat dissipation.

[0003] When deep-sea motors are running underwater, on the one hand, they need to withstand great water pressure. If the motor housing is solely relied on to withstand the pressure, the thickness of the housing needs to be increased when designing the housing to meet the pressure requirements during deep-sea diving. On the other hand, the heat dissipation of the controller needs to be considered. If the heat dissipation of the controller is considered alone, a heat dissipation module needs to be added to the controller during design to meet the heat dissipation requirements of the controller. In order to design the motor to be smaller and lighter, efforts must be made in the motor structure. The prior art is to place the permanent magnet synchronous motor body and the controller in sections, and the controller is generally designed as an independent section, connecting the power supply and the control signal through a longer cable to achieve control of the motor. However, the permanent magnet synchronous motor body and the controller in the prior art are separated from each other, resulting in a heavy total weight of the permanent magnet synchronous motor, a complex structure at the connection between the body and the controller, and low practicality. Summary of the invention

[0004] The present invention provides a deep-sea permanent magnet synchronous motor with a controller integrated on a motor housing, which solves the problem in the prior art that a permanent magnet synchronous motor body and a controller are separated from each other, resulting in a heavy total weight of the permanent magnet synchronous motor, a complex structure at the connection between the body and the controller, and low practicality.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A deep-sea permanent magnet synchronous motor with a controller integrated in a motor housing comprises a shell, wherein the shell comprises a shell, a flange fixedly mounted on the inner wall of one end of the shell and a non-driving end cover fixedly mounted on the inner wall of the shell, a stator core is arranged in the shell, a rotor is arranged in the shell, the rotor comprises a rotor core, a first bearing sleeved on the outer wall of the rotor core, a second bearing sleeved on the outer wall of one end of the rotor core and a rotor winding arranged on the outer wall of the middle part of the rotor core, a first isolating ring is arranged on the outer wall of the first bearing, a driving end cover is connected to the outer wall of one side of the flange by bolts, a second isolating ring is arranged on the outer wall of the second bearing, a connecting ring is connected to the outer wall of one side of the non-driving end cover by bolts, a plurality of support blocks are arranged on the inner wall of one end of the shell away from the flange, and a mounting plate is arranged in the shell, and a controller is connected to the outer wall of one side of the mounting plate by bolts.

[0007] Preferably, the outer wall of one side of the non-driving end cover is provided with through holes distributed at equal distances, and the non-driving end cover is integrally processed with the shell, and the outer wall of one end of the shell is connected to the tail end cover by bolts.

[0008] Preferably, the stator core is pressed into the housing by shrink fitting, and the stator core and the housing form an interference fit.

[0009] Preferably, a first retaining ring is clamped on the outer wall of one end of the rotor core, and the first retaining ring abuts on the outer wall of one side of the first bearing, a second retaining ring is clamped on the outer wall of the middle part of the rotor core, and the second retaining ring abuts on the outer wall of one side of the rotor winding, a third retaining ring is clamped on the outer wall of one end of the rotor core, and one side of the third retaining ring abuts on the outer wall of one side of the second bearing, a retaining ring is sleeved on the outer wall of one end of the rotor core, a fourth retaining ring is clamped on the outer wall of one end of the rotor core, and one side of the fourth retaining ring abuts on the outer wall of one side of the retaining ring.

[0010] Preferably, the first isolating ring is sleeved on the outer wall of the first bearing, and the first isolating ring is connected to the outer wall of one side of the driving end cover by bolts.

[0011] Preferably, the second isolating ring is sleeved on the outer wall of the second bearing, and the connecting ring is connected to the outer wall of one side of the second isolating ring by bolts, and the connecting ring is connected to the isolating ring by bolts.

[0012] Preferably, a plurality of the support blocks are respectively fixed on the inner wall of the shell, and the mounting plate is connected to the outer wall of one side of the support block by bolts.

[0013] The beneficial effects of the present invention are:

[0014] The stator core section of the shell is designed with a thicker wall thickness to enhance the pressure-bearing capacity. The two sides of the stator core section of the shell are designed with a thinner wall thickness to enhance the heat dissipation capacity. A flange is added to the driving end of the shell to increase the pressure-bearing capacity of the driving end. The non-driving end, that is, the middle part of the shell, is designed with a flange-shaped non-driving end end cover to support the shell and is processed integrally with the shell to increase the overall pressure-bearing capacity of the shell. The controller section of the shell is provided with a plurality of trapezoidal support blocks to meet the requirements of heat dissipation and pressure bearing. The controller and other components are installed using the outer side of the non-driving end cover and the internal space of the shell controller section, which can reduce the overall volume of the motor, reduce the overall weight, simplify the structure of the connection between the body and the controller, and improve practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall front view structure of a deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing proposed by the present invention.

[0016] Figure 2 This is a schematic diagram of the overall front cross-sectional structure of a deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing proposed by the present invention.

[0017] Figure 3 This is a schematic diagram of the overall side cross-sectional structure of a deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing proposed by the present invention.

[0018] Figure 4 This is a schematic diagram of the front cross-sectional structure of the shell of a deep-sea permanent magnet synchronous motor in which the controller proposed by the present invention is integrated into the motor shell.

[0019] Figure 5 This is a schematic diagram of the front cross-sectional structure of the rotor core of a deep-sea permanent magnet synchronous motor in which the controller proposed by the present invention is integrated on the motor housing.

[0020] Figure 6 The present invention proposes Figure 5 Enlarged structural diagram at A in the middle.

[0021] Figure 7 This is a schematic diagram of the main cross-sectional structure of the first isolation ring and the drive end cover of the deep-sea permanent magnet synchronous motor in which the controller proposed by the present invention is integrated on the motor housing.

[0022] Figure 8 This is a schematic diagram of the main cross-sectional structure of the second isolating ring, connecting ring and separating ring of a deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing proposed by the present invention.

[0023] In the figure: 1. outer shell; 101. shell; 102. flange; 103. non-drive end cover; 104. tail end cover; 2. stator core; 3. rotor; 301. rotor core; 302. first bearing; 303. first retaining ring; 304. second retaining ring; 305. rotor winding; 306. second bearing; 307. third retaining ring; 308. retaining ring; 309. fourth retaining ring; 4. first isolating ring; 5. drive end cover; 6. second isolating ring; 7. connecting ring; 8. separating ring; 9. supporting block; 10. mounting plate; 11. controller. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Example 1, reference Figure 1-8A deep-sea permanent magnet synchronous motor with a controller integrated in a motor housing comprises a housing 1, wherein the housing 1 comprises a housing 101, a flange 102 fixed on the inner wall of one end of the housing 101, and a non-driving end cover 103 fixed on the inner wall of the housing 101, through holes distributed at equal distances are opened on one side of the outer wall of the non-driving end cover 103, the non-driving end cover 103 and the housing 101 are integrally processed, the non-driving end cover 103 and the housing 101 are made of aluminum alloy 6061, a tail end cover 104 is connected to the outer wall of one end of the housing 101 by bolts, a stator core 2 is arranged in the housing 101, and a stator The core 2 is pressed into the housing 101 by shrink fitting, and the stator core 2 and the housing 101 form an interference fit. The housing 101 is provided with a rotor 3, and the rotor 3 includes a rotor core 301, a first bearing 302 sleeved on the outer wall of the rotor core 301, a second bearing 306 sleeved on the outer wall of one end of the rotor core 301, and a rotor winding 305 arranged on the outer wall of the middle part of the rotor core 301. A first retaining ring 303 is clamped on the outer wall of one end of the rotor core 301, and the first retaining ring 303 abuts on the outer wall of one side of the first bearing 302. A second retaining ring 306 is clamped on the outer wall of the middle part of the rotor core 301. 4, the second retaining ring 304 is abutted against the outer wall of one side of the rotor winding 305, a third retaining ring 307 is clamped on the outer wall of one end of the rotor core 301, and one side of the third retaining ring 307 is abutted against the outer wall of one side of the second bearing 306, a retaining ring 308 is sleeved on the outer wall of one end of the rotor core 301, a fourth retaining ring 309 is clamped on the outer wall of one end of the rotor core 301, and one side of the fourth retaining ring 309 is abutted against the outer wall of one side of the retaining ring 308, a first isolating ring 4 is sleeved on the outer wall of the first bearing 302, a driving end cover 5 is connected to the outer wall of one side of the flange 102 by bolts, and the first isolating ring 4 is connected to On the outer wall of one side of the driving end cover 5, a second isolation ring 6 is sleeved on the outer wall of the second bearing 302, and a connecting ring 7 is connected to the outer wall of one side of the non-driving end cover 103 by bolts. The connecting ring 7 is connected to the outer wall of one side of the second isolation ring 6 by bolts, and the connecting ring 7 is connected to the separating ring 8 by bolts. A plurality of supporting blocks 9 are fixedly provided on the inner wall of the end of the shell 101 away from the flange 102, and the plurality of supporting blocks 9 are distributed in a circle. A mounting plate 10 is provided in the shell 101, and the mounting plate 10 is connected to the outer wall of one side of the supporting block 9 by bolts, and a controller 11 is connected to the outer wall of one side of the mounting plate 10 by bolts.

[0026] The stator core segment of the shell 101 is designed to have a thicker wall thickness to enhance the pressure-bearing capacity. The two sides of the stator core segment of the shell 101 are designed to have a thinner wall thickness to enhance the heat dissipation capacity. A flange 102 is added to the driving end of the shell 101 to increase the pressure-bearing capacity of the driving end. The non-driving end, that is, the middle part of the shell 101, is designed to have a flange-shaped non-driving end end cover 103 to support the shell 101 and is integrally processed with the shell 101 to increase the overall pressure-bearing capacity of the shell 101. The controller segment of the shell 101 is provided with a plurality of trapezoidal support blocks 9 to meet the requirements of heat dissipation and pressure bearing. The controller 11 and other components are installed using the outer side of the non-driving end cover 103 and the internal space of the controller segment of the shell 101.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A deep-sea permanent magnet synchronous motor with a controller integrated in a motor housing, comprising a housing (1), characterized in that: The housing (1) comprises a housing (101), a flange (102) fixedly mounted on the inner wall of one end of the housing (101), and a non-driving end cover (103) fixedly mounted on the inner wall of the housing (101); A stator core (2) is arranged in the housing (101); A rotor (3) is arranged in the housing (101), and the rotor (3) comprises a rotor core (301), a first bearing (302) sleeved on the outer wall of the rotor core (301), a second bearing (306) sleeved on the outer wall of one end of the rotor core (301), and a rotor winding (305) arranged on the outer wall of the middle part of the rotor core (301); A first isolating ring (4) is provided on the outer wall of the first bearing (302), and a driving end cover (5) is connected to the outer wall of one side of the flange (102) by bolts; A second isolating ring (6) is provided on the outer wall of the second bearing (302), and a connecting ring (7) is connected to the outer wall of one side of the non-driving end cover (103) via bolts; A plurality of support blocks (9) are provided on the inner wall of one end of the shell (101) away from the flange (102), and a mounting plate (10) is provided inside the shell (101), and a controller (11) is connected to the outer wall of one side of the mounting plate (10) by bolts.

2. The deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing according to claim 1, characterized in that: The non-driving end cover (103) has through holes distributed at equal distances on its outer wall at one side, and the non-driving end cover (103) is integrally processed with the housing (101), and the tail end cover (104) is connected to the outer wall at one end of the housing (101) by bolts.

3. The deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing according to claim 1, characterized in that: The stator core (2) is pressed into the housing (101) by shrink fitting, and the stator core (2) and the housing (101) form an interference fit.

4. The deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing according to claim 1, characterized in that: A first retaining ring (303) is clamped on the outer wall of one end of the rotor core (301), and the first retaining ring (303) abuts against the outer wall of one side of the first bearing (302); a second retaining ring (304) is clamped on the outer wall of the middle part of the rotor core (301), and the second retaining ring (304) abuts against the outer wall of one side of the rotor winding (305); a third retaining ring (307) is clamped on the outer wall of one end of the rotor core (301), and one side of the third retaining ring (307) abuts against the outer wall of one side of the second bearing (306); a retaining ring (308) is sleeved on the outer wall of one end of the rotor core (301); a fourth retaining ring (309) is clamped on the outer wall of one end of the rotor core (301), and one side of the fourth retaining ring (309) abuts against the outer wall of one side of the retaining ring (308).

5. The deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing according to claim 1, characterized in that: The first isolating ring (4) is sleeved on the outer wall of the first bearing (302), and the first isolating ring (4) is connected to the outer wall of one side of the driving end cover (5) by means of bolts.

6. The deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing according to claim 1, characterized in that: The second isolation ring (6) is sleeved on the outer wall of the second bearing (306), and the connecting ring (7) is connected to the outer wall of one side of the second isolation ring (6) by bolts, and the connecting ring (7) is connected to the separation ring (8) by bolts.

7. The deep-sea permanent magnet synchronous motor with a controller integrated on the motor housing according to claim 1, characterized in that: A plurality of the support blocks (9) are respectively fixed on the inner wall of the housing (101), and the mounting plate (10) is connected to the outer wall of one side of the support block (9) by means of bolts.

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