Axial magnetic flux motor for stator and rotor separation type hydrogen circulating pump

Abstract

The utility model relates to the technical field of new energy automobile motors and industrial energy-saving transformation, in particular to an axial magnetic flux motor for a stator and rotor separation type hydrogen circulating pump. According to the technical scheme, the motor comprises a casing main body structure, a stator assembly, a potting winding, a stator sealing plate and a rotor assembly, the casing main body is formed by combining a first cylindrical casing structure and a second cylindrical casing structure in a butt joint mode, and the stator assembly is composed of a winding disc type stator, the potting winding and the stator sealing plate. The stator sealing plate is matched with the second shell structure through a spigot structure, and the stator sealing plate is located at the splicing position of the first shell structure and the second shell structure. The motor has the advantages that the structural strength is high, a moving part and a static part can be separated through the stator and rotor separation type structural design, hydrogen is effectively prevented from entering the motor, the motor is prevented from being damaged, the overall service life of the motor is longer, and the performance is more stable when the motor is used.

Description

Technical Field

[0001] The utility model relates to the technical fields of new energy automobile motors and industrial energy-saving transformation, and in particular to an axial magnetic flux motor for a stator-rotor separation type hydrogen circulation pump. Background Art

[0002] Most of the existing hydrogen pump motors are radial permanent magnet motors; the radial motor has a complex stator and rotor isolation structure, resulting in poor motor performance, short motor life, and cannot be completely sealed.

[0003] On the other hand, most inner rotor radial hydrogen pump motors have not changed the structure of traditional motors. For example, the Chinese patent announcement number CN220358983U, named "A new type of exhaust gas circulation pump motor drive system", uses a potting process to improve the air tightness of the motor, but there may still be leakage problems. For example, the patent number CN117424398A is named, a shielded induction motor for aviation pumps with internal and external water circulation, and it still uses a radial inner rotor structure. For example, the patent number CN220254216U is named, a composite rotor structure used in a shielded motor, the stator and rotor cores use a closed structure, the motor structure is relatively complex, and the motor power density is low. Utility Model Content

[0004] The purpose of the utility model is to provide an axial flux motor for a stator-rotor separated hydrogen circulation pump, which has a stronger heat dissipation capacity of the internal structure and a higher overall sealing performance, can effectively prevent the motor from rusting and extend the service life of the motor, the setting of the stator sealing plate can effectively reduce eddy current loss, increase the creepage distance of the motor, and improve the heat resistance level of the motor, has good plasticity and high mechanical strength, the rotor protection plate and the back iron are completely sealed by a welding process, the rotor protection plate is made of stainless steel, the welding process can effectively fix the magnetic steel and prevent the magnetic steel from falling off, reduces other assembly processes, has high structural strength, and the stator-rotor separated structural design can separate the moving part from the stationary part, effectively preventing hydrogen from entering and causing damage to the motor.

[0005] The technical solution of the utility model is as follows:

[0006] An axial flux motor for a stator-rotor separated hydrogen circulation pump, characterized in that it includes a casing main structure, a stator assembly, a potting winding, a stator sealing plate and a rotor assembly, the casing main body is formed by a first cylindrical shell structure and a second shell structure connected together, the stator assembly is composed of a wound disc stator, a potting winding and a stator sealing plate, the stator sealing plate and the second shell structure are matched through a stop structure, the stator sealing plate is located at the splicing position of the first shell structure and the second shell structure, the casing main body and the potting winding are bonded together, the rotor assembly is composed of a rotor protection plate, a magnetic steel, a back iron and a main rotating shaft, the outer side of the rotor protection plate coincides with the outer cylindrical surface of the back iron, and the axial projection of the magnetic steel does not exceed the axial projection area of ​​the back iron.

[0007] Furthermore, the stator sealing plate is produced and processed from epoxy glass fiber material.

[0008] Furthermore, the back iron and the main body rotating shaft are connected together by welding.

[0009] Furthermore, a sealing step column is provided between the back iron and the main body rotating shaft.

[0010] Furthermore, the axial projection of the magnetic steel and the axial projection area of ​​the wound disc stator completely overlap.

[0011] Beneficial effects of the utility model:

[0012] The internal structure of the utility model has stronger heat dissipation capacity and higher overall sealing, which can effectively prevent the motor from rusting and extend the service life of the motor. The setting of the stator sealing plate can effectively reduce eddy current loss, increase the creepage distance of the motor, and improve the heat resistance level of the motor. It has good plasticity and high mechanical strength. The rotor protection plate and the back iron are completely sealed by welding process. The rotor protection plate is made of stainless steel. The welding process can effectively fix the magnetic steel and prevent the magnetic steel from falling off, reducing other assembly processes, and the structural strength is high. The stator-rotor separation structure design can separate the moving part and the stationary part, effectively preventing hydrogen from entering, thereby causing damage to the motor, so that the overall life of the motor is longer and the performance is more stable during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the central cross-section structure of the utility model;

[0014] In the figure: 1. first shell structure, 2. second shell structure, 3. wound disc stator, 4. stator sealing plate, 5. rotor protection plate, 6. magnetic steel, 7. back iron, 8. main rotating shaft. DETAILED DESCRIPTION

[0015] like Figure 1 As shown, an axial magnetic flux motor for a stator-rotor separation hydrogen circulation pump includes a casing main structure, a stator assembly, a potting winding, a stator sealing plate 4 and a rotor assembly. The design of the stator sealing plate 4 can effectively isolate the rotor and the stator, and the heat in the use process is easier to dissipate, and the internal structural safety is more reliable. The casing main body is formed by a cylindrical first shell structure 1 and a second shell structure 2 docking and combining, so that the production and processing of the main structure is more convenient and easier to assemble. The stator assembly is composed of a winding disc stator 3, a potting winding and a stator sealing plate 4. The stator sealing plate 4 cooperates with the second shell structure 2 through a stop structure. The stator sealing plate 4 is located at the splicing position of the first shell structure 1 and the second shell structure 2. The casing main body and the potting winding are bonded together. The rotor assembly is composed of a rotor protection plate 5, a magnetic steel 6, a back iron 7 and a main rotating shaft 8. The outer side of the rotor protection plate 5 coincides with the outer cylindrical surface of the back iron 7, so that the matching flatness between the components is better and the matching operation during assembly is easier. The axial projection of the magnetic steel 6 does not exceed the axial projection area of ​​the back iron 7, ensuring that the stability of the rotor during operation can be guaranteed. Its internal structure has a stronger heat dissipation capacity and a higher overall sealing performance, which can effectively prevent the motor from rusting and extend the service life of the motor. The setting of the stator sealing plate can effectively reduce eddy current loss, increase the creepage distance of the motor, and improve the heat resistance level of the motor. It has good plasticity and high mechanical strength. The rotor protection plate and the back iron are completely sealed by welding. The rotor protection plate is made of stainless steel. The welding process can effectively fix the magnetic steel and prevent the magnetic steel from falling off, reducing other assembly processes, and has high structural strength. The stator-rotor separation structure design can separate the moving part from the stationary part, effectively preventing hydrogen from entering, thereby causing damage to the motor, making the overall life of the motor longer and the performance more stable when in use.

[0016] Preferably, the stator sealing plate 4 is made of epoxy glass fiber material, so as to achieve better internal heat insulation and heat dissipation effects and higher structural support strength.

[0017] Preferably, the back iron 7 and the main rotating shaft 8 are connected together by welding, so that the matching strength of the connection position is higher, the structural stability is better during later use, and the durability is stronger.

[0018] Preferably, a sealing step column is provided between the back iron 7 and the main rotating shaft 8, which can further improve the structural strength of this position and make the sealing performance of the welding position better.

[0019] Preferably, the axial projection of the magnetic steel 6 and the axial projection area of ​​the wound disc stator 3 completely overlap, so that the overall flatness between the internal structural components is better, the installation is more convenient, and the space is saved.

[0020] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements or substitutions can be made without departing from the principles of the present invention. These improvements or substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An axial flux motor for a stator-rotor separation hydrogen circulation pump, characterized in that: The invention comprises a casing main body structure, a stator assembly, a potting winding, a stator sealing plate (4) and a rotor assembly, wherein the casing main body is formed by a first cylindrical casing structure (1) and a second casing structure (2) being butt-jointed and assembled, the stator assembly is composed of a wound disc stator (3), a potting winding and a stator sealing plate (4), the stator sealing plate (4) and the second casing structure (2) are matched with each other through a stop structure, the stator sealing plate (4) is located at a splicing position of the first casing structure (1) and the second casing structure (2), the casing main body and the potting winding are bonded together, the rotor assembly is composed of a rotor protection plate (5), a magnetic steel (6), a back iron (7) and a main rotating shaft (8), the outer side of the rotor protection plate (5) coincides with the outer cylindrical surface of the back iron (7), and the axial projection of the magnetic steel (6) does not exceed the axial projection area of ​​the back iron (7).

2. The axial flux motor for a stator-rotor separation hydrogen circulation pump according to claim 1, characterized in that: The stator sealing plate (4) is produced and processed from epoxy glass fiber material.

3. The axial flux motor for a stator-rotor separation hydrogen circulation pump according to claim 1, characterized in that: The back iron (7) and the main body rotating shaft (8) are connected together by welding.

4. The axial flux motor for a stator-rotor separation hydrogen circulation pump according to claim 1, characterized in that: A sealing matching step column is provided between the back iron (7) and the main body rotating shaft (8).

5. The axial flux motor for a stator-rotor separation hydrogen circulation pump according to claim 1, characterized in that: The axial projection of the magnetic steel (6) and the axial projection area of ​​the wound disc stator (3) completely overlap.

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