Power supply assembly, stator and electric machine

Abstract

The application relates to a power supply assembly, a stator and a motor, relates to the technical field of driving equipment, and is used for the purpose of improving waterproof effect to ensure the reliability of the motor. The power supply assembly comprises a shell, the power supply assembly comprises input structure and output structure, the input structure is arranged outside the shell, the output structure is arranged inside the shell, the input structure is connected with an external power supply and can generate a magnetic field, and the output structure can generate electric energy through the magnetic field induction. Compared with the prior art, the advantages of the application are that the input structure and the output structure of the power supply are separated on two sides of the shell, the inside of the shell is separated from the outside under the premise of ensuring that electric energy is obtained in the inside of the shell, the problem that the waterproof performance of the sealing rubber terminal is invalid under the operation of underwater or acidic and other harsh conditions is overcome, the waterproof reliability is improved, water is prevented from penetrating into the inside of the motor to cause the motor to be scrapped, and the reliability of the motor is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of driving equipment, in particular to a power supply assembly, a stator and a motor. BACKGROUND

[0002] In recent years, with the rapid development of industrial production automation and intelligentization, servo motors are widely used in industrial production equipment due to their high control precision and fast response. However, the existing servo motors need to directly introduce power lines into the shell for power supply, and the waterproof structure is realized by the way of extruding rubber pad. Long-term operation in underwater or acidic and other harsh environments can easily cause the waterproof function to fail, resulting in a problem of decreased reliability of the servo motor. SUMMARY

[0003] The present application provides a power supply assembly, a stator and a motor for improving the waterproof effect to ensure the reliability of the motor.

[0004] The present application provides a power supply assembly for supplying power to a predetermined structure, the predetermined structure comprising a shell, the power supply assembly comprising an input structure and an output structure, the input structure being arranged outside the shell, the output structure being arranged inside the shell, the input structure being connected with an external power supply and being capable of generating a magnetic field, the output structure generating electric energy by induction of the magnetic field.

[0005] In one embodiment, the input structure comprises a primary winding, and the output structure comprises a secondary winding, the primary winding generating the magnetic field when energized, and the secondary winding generating electric energy by induction of the magnetic field.

[0006] In one embodiment, the power supply assembly further comprises an induction core, the induction core being arranged in the primary winding and / or the secondary winding.

[0007] In one embodiment, the induction core is U-shaped, and the opening of the U-shape faces the shell.

[0008] In one embodiment, the shell is provided with a limiting groove, and the end of the induction core is arranged in the corresponding limiting groove.

[0009] In one embodiment, the induction core comprises a primary induction core and a secondary induction core, the outer surface of the shell is provided with a first limiting groove, the inner surface of the shell is provided with a second limiting groove, the primary induction core is arranged in the primary winding, and the end of the primary induction core is arranged in the first limiting groove, the secondary induction core is arranged in the secondary winding, and the end of the secondary induction core is arranged in the second limiting groove.

[0010] In one embodiment, the first limiting groove and the second limiting groove are correspondingly arranged.

[0011] In one embodiment, the first limiting groove is in interference fit with the primary induction core; and / or, the second limiting groove is in interference fit with the secondary induction core.

[0012] In one embodiment, the power supply assembly comprises a shell, which is arranged on the casing, and the input structure is arranged in the shell.

[0013] In one embodiment, an installation groove is arranged on the outer surface of the casing, and the shell is arranged in the installation groove.

[0014] In one embodiment, a limiting hole is arranged on the shell, and the input structure comprises a primary induction core, which is in interference fit with the limiting hole.

[0015] The application further provides a stator comprising the power supply assembly.

[0016] The application further provides an electric machine comprising the power supply assembly or the stator,

[0017] Compared with the prior art, the input structure and the output structure of the power supply are separated on two sides of the casing, the inside of the casing is separated from the outside under the premise of ensuring that electric energy is obtained in the inside of the casing, the problem of invalidation of waterproof performance of the sealing rubber terminal due to operation under harsh conditions such as underwater or acid is overcome, waterproof reliability is improved, water is prevented from penetrating into the inside of the electric machine to cause the electric machine to be scrapped, and the reliability of the electric machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Hereinafter, the application will be described in more detail based on embodiments and with reference to the drawings.

[0019] Figure 1 is a sectional view of an electric machine in an embodiment of the application;

[0020] Figure 2 is a partial schematic view of A in Figure 1

[0021] Figure 3 is a structural schematic view of the shell and the primary winding in an embodiment of the application;

[0022] In the figure: 1, preset structure; 11, casing; 2, primary winding; 3, secondary winding; 12, first limiting groove; 13, second limiting groove; 4, shell; 41, limiting hole. DETAILED DESCRIPTION

[0023] The application will be further described below with reference to the drawings.​

[0024] As shown in Figures 1 to 3 The present application provides a power supply assembly for powering a preset structure 1, the preset structure 1 comprising a housing 11, the power supply assembly comprising an input structure and an output structure, the input structure being arranged outside the housing 11, the output structure being arranged inside the housing 11, the input structure being connected with an external power supply and capable of generating a magnetic field, the output structure generating electric energy by induction of the magnetic field. The input structure and the output structure of the power supply are separated on two sides of the housing 11, which separates the inside of the housing 11 from the outside under the premise of ensuring that electric energy is obtained inside the housing 11, without the need for rubber extrusion sealing, improving the waterproof reliability, preventing water from seeping into the motor to cause the motor to be scrapped, and improving the reliability of the motor.

[0025] The input structure is connected with an external power supply and generates a magnetic field after obtaining electric energy, the magnetic field passes through the housing 11 into the inside of the housing 11, and the output structure generates an induced electromotive force by induction of the magnetic field to supply power to the structure inside the housing 11.

[0026] As an embodiment, the input structure comprises a primary winding 2, and the output structure comprises a secondary winding 3, the primary winding 2 generates the magnetic field when energized, and the secondary winding 3 generates electric energy by induction of the magnetic field. The number of turns of the primary winding 2 and the number of turns of the secondary winding 3 can be the same or different, when the number of turns of the primary winding 2 and the number of turns of the secondary winding 3 are different, since the input voltage of the primary winding 2 is certain, different voltages can be generated in the secondary winding 3 according to the different turn ratio, for example, when the number of turns of the secondary winding 3 is greater than the number of turns of the primary winding 2, the voltage output by the secondary winding 3 can be increased to overcome the back electromotive force generated by the motor, so that the motor can run at a higher speed.

[0027] In an embodiment, the power supply assembly further comprises an induction core, the induction core being arranged in the primary winding 2 and / or the secondary winding 3. The magnetic induction intensity of the primary winding 2 or the secondary winding 3 is increased by using the induction core, so as to reduce the volume of the power supply assembly as much as possible. Preferably, the induction core is made of a material with low magnetic resistance.

[0028] Optionally, the induction core is U-shaped, the opening of the U-shaped induction core facing the housing 11, the housing 11 being provided with a limiting groove, and the end of the induction core being arranged in the corresponding limiting groove. The U-shaped structure facilitates positioning and fixing of the induction core.

[0029] As an implementation form, the induction core comprises a primary induction core and a secondary induction core, a first limiting groove 12 is arranged on the outer surface of the shell 11, a second limiting groove 13 is arranged on the inner surface of the shell 11, the primary induction core is arranged in the primary winding 2, and the end of the primary induction core is arranged in the first limiting groove 12, the secondary induction core is arranged in the secondary winding 3, and the end of the secondary induction core is arranged in the second limiting groove 13.

[0030] The first limiting groove 12 is in interference fit with the primary induction core. Through the interference fit, the positioning assembly of the primary induction core and the shell 11 can be ensured, and the magnetic resistance can be effectively reduced.

[0031] The second limiting groove 13 is in interference fit with the secondary induction core. Through the interference fit, the positioning assembly of the secondary induction core and the shell 11 can be ensured, and the magnetic resistance can be effectively reduced.

[0032] The first limiting groove 12 and the second limiting groove 13 are correspondingly arranged. That is, the bottom of the first limiting groove 12 and the bottom of the second limiting groove 13 are oppositely arranged, so as to reduce the interval between the primary winding 2 and the secondary winding 3 as much as possible, thereby reducing the magnetic resistance of the magnetic circuit and improving the power transmission efficiency.

[0033] In an implementation form, the power assembly comprises a shell 4, the shell 4 is arranged on the shell 11, and the input structure is arranged in the shell 4. The external power supply can supply power to the input structure after penetrating the shell 4. The shell 4 is used to protect the input structure, so as to avoid accidents caused by contacting the input structure. Meanwhile, the shell 4 can also protect the input structure to a certain extent, thereby reducing the replacement frequency of the input structure and improving the reliability of the motor.

[0034] In an implementation form, the outer surface of the shell 11 is provided with a mounting groove, and the shell 4 is arranged in the mounting groove. The mounting groove is used to position the shell 4, so as to facilitate the fixation of the shell 4.

[0035] Optionally, the first limiting groove 12 is arranged in the mounting groove, so as to further reduce the thickness of the shell 11 between the primary winding 2 and the secondary winding 3, thereby further reducing the magnetic resistance.

[0036] In an implementation form, the shell 4 is provided with a limiting hole 41, the input structure comprises a primary induction core, and the primary induction core is in interference fit with the limiting hole 41. Through the interference fit, the positioning assembly of the primary induction core and the shell 4 can be ensured, and the magnetic resistance can be effectively reduced, thereby improving the energy transmission efficiency of the power assembly.

[0037] The application also provides a stator comprising the power supply assembly, and other components and connection modes in the stator can be realized by using known prior art.

[0038] The application also provides an electric machine comprising the power supply assembly or the stator, and other components and connection modes in the electric machine can be realized by using known prior art.

[0039] The electric machine comprises a rear end cover, the power supply assembly is arranged on the rear end cover, and the rear end cover is made of a material with high magnetic resistance to reduce magnetic leakage.

[0040] Although the application has been described with reference to the preferred embodiments, various modifications can be made to the application and equivalents can be substituted for elements thereof without departing from the scope of the application. In particular, those skilled in the art will recognize that elements of the various embodiments can be interchanged among the embodiments while still being in keeping with the scope of the application. The application is not to be limited to the specific embodiments disclosed in the specification, but includes all technical solutions falling within the scope of the claims.

Claims

1. A power supply assembly for supplying power to a preset structure (1), the preset structure (1) comprising a housing (11), characterized in that, The power supply assembly includes an input structure and an output structure. The input structure is located outside the housing (11), and the output structure is located inside the housing (11). The interior of the housing is separated from the outside. The input structure is connected to an external power source and can generate a magnetic field. The output structure generates electrical energy through the magnetic field. The power supply assembly includes a housing (4), which is disposed on the housing (11), and the input structure is disposed inside the housing (4); An installation groove is provided on the outer surface of the housing (11), and the outer shell (4) is disposed in the installation groove; The outer shell (4) is provided with a limiting hole (41), and the input structure includes a primary induction iron core, which is interference-fitted with the limiting hole (41); The output structure includes a secondary induction core. A second limiting groove (13) is provided on the inner surface of the housing (11). The end of the secondary induction core is located in the second limiting groove (13). The secondary induction core is interference-fitted with the second limiting groove (13).

2. The power supply assembly according to claim 1, characterized in that: The input structure includes a primary winding (2), and the output structure includes a secondary winding (3). The primary winding (2) generates the magnetic field when energized, and the secondary winding (3) generates electrical energy through the magnetic field.

3. The power supply assembly according to claim 2, characterized in that: The power supply assembly also includes an induction core, which is inserted in the primary winding (2) and / or the secondary winding (3).

4. The power supply assembly according to claim 3, characterized in that: The induction core is U-shaped, and the opening of the U-shape faces the housing (11).

5. The power supply assembly according to claim 4, characterized in that: The housing (11) is provided with a limiting groove, and the end of the induction core is disposed in the corresponding limiting groove.

6. The power supply assembly according to claim 5, characterized in that: The primary induction core is inserted into the primary winding (2), and the secondary induction core is inserted into the secondary winding (3).

7. A stator, characterized in that: Includes the power supply component according to any one of claims 1 to 6.

8. An electric motor, characterized in that: It includes the power supply assembly according to any one of claims 1 to 6 or the stator according to claim 7.

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