Motor signal acquisition assembly, motor and vehicle

Abstract

The utility model relates to a motor signal acquisition assembly, a motor and a vehicle, the motor signal acquisition assembly comprises an induction rotor, the end portion of the motor rotor is provided with a balance plate, the induction rotor comprises a plurality of induction wings, the plurality of induction wings are uniformly distributed around the axis of the motor rotor, and the balance plate is arranged on the balance plate. And the plurality of induction wings and the balance plate are integrally formed. According to the motor signal acquisition device provided by the utility model, the induction rotor is integrated on the balance plate, i.e., the plurality of induction wings and the balance plate are integrally formed, so that the assembly process of the induction rotor and the balance plate is avoided, the assembly structure space of the induction rotor and the balance plate is saved, the assembly process is simplified, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor signal acquisition component, a motor and a vehicle. Background Art

[0002] The motor is the core power component of new energy vehicles. When running, new energy vehicles need to collect the motor's rotor position information and speed information to achieve precise control of the motor.

[0003] At present, the method of obtaining the rotor position information and speed information of the motor includes using EDP (motor position sensor) method, and the method of using position sensor is light in weight. The position sensor includes an induction stator and an induction rotor, wherein the assembly of the induction rotor occupies a certain axial space of the motor, and the space occupancy rate is relatively high. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a motor signal acquisition component, a motor and a vehicle, which can save assembly structure space and reduce space occupancy.

[0005] On the one hand, the utility model provides a motor signal acquisition component, which is arranged on a motor rotor, the motor signal acquisition component includes an induction rotor, a balance plate is arranged at the end of the motor rotor, the induction rotor includes a plurality of induction wings, the plurality of induction wings are evenly distributed around the axis of the motor rotor, and the plurality of induction wings are integrally formed with the balance plate.

[0006] In one embodiment of the utility model, the motor signal acquisition component further includes an induction stator, and an induction cavity is formed between two adjacent induction wings. The induction stator is used to generate a changing signal according to the position change of the induction wings and the induction cavity.

[0007] In one embodiment of the utility model, a plurality of first induction cavities are formed on the surface of the balance plate away from the motor rotor in an axially inward depression, and the plurality of first induction cavities are evenly distributed around the axis of the motor rotor, and a first induction wing is formed between two adjacent first induction cavities.

[0008] In one embodiment of the utility model, a plurality of second sensing wings are formed on the surface of the balance plate away from the motor rotor and protrude axially outward, and the plurality of second sensing wings are evenly distributed around the axis of the motor rotor, and a second sensing cavity is formed between two adjacent second sensing wings.

[0009] In one embodiment of the present invention, a preset induction distance is set between the induction stator and the induction rotor along the axial direction of the motor rotor.

[0010] In one embodiment of the utility model, a rotating shaft is provided on the motor rotor, a circulation cavity for flowing coolant is provided inside the rotating shaft, a cooling channel is provided on the balance plate, one end of the cooling channel is connected to the circulation cavity, and the other end of the cooling channel is arranged toward the induction stator.

[0011] In one embodiment of the present utility model, the cooling channel includes an oil storage hole and an oil injection channel which are interconnected, the oil storage hole is connected to the flow cavity, and the outlet of the oil injection channel is arranged toward the induction stator.

[0012] On the other hand, a motor is provided, comprising the motor signal acquisition component and a motor rotor, wherein the motor comprises a housing, and an induction stator is arranged on the housing.

[0013] In one embodiment of the utility model, the motor comprises a motor stator and a cooling channel, the motor stator is provided with an armature winding, and the coolant in the cooling channel flows through the induction stator and the armature winding.

[0014] On the other hand, a vehicle is provided, comprising the above motor.

[0015] The above technical solution of the utility model has the following advantages compared with the prior art:

[0016] The motor signal acquisition device described in the utility model integrates the induction rotor into the balance plate, that is, a plurality of induction wings and the balance plate are integrally formed, thereby avoiding the assembly process of the induction rotor and the balance plate, which not only saves the assembly structure space of the induction rotor and the balance plate, but also simplifies the assembly process and improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a first structural schematic diagram of the motor signal acquisition component of the utility model;

[0019] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the center A (structural schematic diagram of the convex balance plate);

[0020] Figure 3 This is a second structural schematic diagram of the motor signal acquisition component of the utility model;

[0021] Figure 4It is a structural schematic diagram of the concave balance board of the utility model;

[0022] Figure 5 It is a cross-sectional view of the outward convex balance plate of the motor signal acquisition assembly of the utility model;

[0023] Figure 6 It is a structural schematic diagram of a motor with a motor signal acquisition component of the utility model.

[0024] Description of the Figures in the Specification:

[0025] 1. Motor rotor; 2. Induction rotor; 3. Balance plate; 4. Induction wing; 5. Induction stator; 6. Induction chamber; 7. First induction chamber; 8. First induction wing; 9. Second induction wing; 10. Second induction chamber; 11. Rotating shaft; 12. Circulation chamber; 13. Cooling channel; 14. Oil storage hole; 15. Oil injection channel; 16. Casing; 17. Motor stator; 18. Armature winding. DETAILED DESCRIPTION

[0026] Embodiment 1

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1 to Figure 6 As shown, the motor signal acquisition device of the utility model is arranged on the motor rotor 1, and the motor signal acquisition component includes an induction rotor 2. A balance plate 3 is arranged at the end of the motor rotor 1. The induction rotor 2 includes a plurality of induction wings 4. The plurality of induction wings 4 are evenly distributed around the axis of the motor rotor 1, and the plurality of induction wings 4 are integrally formed with the balance plate 3.

[0029] The present application proposes a motor signal acquisition component to reduce the space occupancy of the induction rotor 2. The signal acquisition component of the present application is arranged on the motor rotor 1 to collect the position information and speed information of the motor rotor 1 to achieve precise control of the motor. The signal acquisition component includes an induction rotor 2 and an induction stator 5. The induction rotor 2 and the induction stator 5 obtain the position information and speed information of the motor rotor 1 through electromagnetic induction. Specifically, Figure 1As shown, a balancing plate 3 is provided at the end of the motor rotor 1, and the balancing plate 3 rotates synchronously with the motor rotor 1. The induction rotor 2 is provided on the balancing plate 3, so that the induction rotor 2 rotates synchronously with the balancing plate 3. When electromagnetic induction is generated between the induction stator 5 and the induction rotor 2, the position information and speed information of the induction rotor 2 can be obtained through the induction stator 5, which is equivalent to indirectly obtaining the position information and speed information of the motor rotor 1. The induction rotor 2 and the balancing plate 3 of the prior art are independent structures, and the induction rotor 2 needs to be connected to the balancing plate 3 through a corresponding connection structure, resulting in that the assembly structure of the induction rotor 2 and the balancing plate 3 occupies a large space and the space utilization rate is low. Further, the induction rotor 2 includes a plurality of induction wings 4, and the plurality of induction wings 4 are evenly distributed around the axis of the motor rotor 1. Preferably, four induction wings 4 are provided, and the angles between two adjacent induction wings 4 are the same, and the edges of the induction wings 4 can be in the shape of an arc, or in the shape of a plane, etc., which does not affect the electromagnetic induction generated by the induction rotor 2 and the induction stator 5, and preferably in the shape of an arc, so as to facilitate the rotational movement of the induction rotor 2. In addition, the size and shape of the multiple induction wings 4 are consistent to meet the dynamic balance standard of the induction rotor 2. The induction rotor 2 and the balance plate 3 of the present application are integrally formed, that is, the multiple induction wings 4 and the balance plate 3 are integrally formed, thereby avoiding the assembly process of the induction rotor 2 and the balance plate 3, not only saving the assembly structure space of the induction rotor 2 and the balance plate 3, but also simplifying the assembly process and improving the assembly efficiency.

[0030] In one embodiment, the motor signal acquisition component further includes an induction stator 5, and an induction cavity 6 is formed between two adjacent induction wings 4. The induction stator 5 is used to generate a changing signal according to the position change of the induction wings 4 and the induction cavity 6.

[0031] The motor signal acquisition component includes an induction rotor 2 and an induction stator 5. The induction rotor 2 and the induction stator 5 acquire the position information and speed information of the motor rotor 1 through electromagnetic induction. Figure 1 As shown, an induction cavity 6 is formed between two adjacent induction wings 4, and the position information and speed information of the induction rotor 2 can be accurately acquired through the mechanism of the interval arrangement of the induction wings 4 and the induction cavity 6 and the principle of electromagnetic induction, so as to further obtain the position information and speed information of the motor rotor 1, that is, the induction stator 5 is used to generate a changing signal according to the position change of the induction wings 4 and the induction cavity 6, and the position information and speed information of the motor rotor 1 can be obtained through the changing signal.

[0032] In one embodiment, a plurality of first induction cavities 7 are formed on the surface of the balance plate 3 away from the motor rotor 1 in an axially inward depression, and the plurality of first induction cavities 7 are evenly distributed around the axis of the motor rotor 1 , and a first induction wing 8 is formed between two adjacent first induction cavities 7 .

[0033] There are two ways to match the sensing wing 4 with the sensing cavity 6. One is to form the sensing wing by concave. Figure 4 As shown, the balancing plate 3 is inwardly recessed to form the sensing wing 4, that is, the balancing plate 3 is recessed along its axis and in the direction toward the motor rotor 1 to form a plurality of first sensing cavities 7, the plurality of first sensing cavities 7 are evenly distributed around the axis of the motor rotor 1, and the angles between any two adjacent first sensing cavities 7 are the same. Figure 4 As shown, a first induction wing 8 is formed between two adjacent first induction chambers 7. The first induction wing 8 is formed by processing the first induction chamber 7. The induction stator 5 can obtain the position information and speed information of the induction rotor 2 through electromagnetic induction between the induction stator 5 and the first induction wing 8 and the first induction chamber 7, so as to further obtain the position information and speed information of the motor rotor 1. When the induction stator 5 and the armature winding 18 are cooled by the coolant (cooling oil) in the motor, the induction wing formed by the concave structure can reduce the oil stirring loss and reduce the power loss.

[0034] In one embodiment, a plurality of second sensing wings 9 are formed on the surface of the balancing plate 3 away from the motor rotor 1 and protrude axially outward. The plurality of second sensing wings 9 are evenly distributed around the axis of the motor rotor 1 , and a second sensing cavity 10 is formed between two adjacent second sensing wings 9 .

[0035] There are two ways to match the sensing wing 4 with the sensing cavity 6. The other is to form a sensing wing by convexity. Figure 2 As shown, the balancing plate 3 protrudes outward to form induction wings, that is, a plurality of second induction wings 9 are protruded from the balancing plate 3 along its axis and in a direction away from the motor rotor 1, and the plurality of second induction wings 9 are evenly distributed around the axis of the motor rotor 1, and the angles between any two adjacent second induction wings 9 are the same. Further, a second induction cavity 10 is formed between two adjacent second induction wings 9, and the induction stator 5 can obtain the position information and speed information of the induction rotor 2 through electromagnetic induction between the induction stator 5 and the second induction wings 9 and the second induction cavity 10, so as to further obtain the position information and speed information of the motor rotor 1.

[0036] In one embodiment, a preset induction distance is set between the induction stator 5 and the induction rotor 2 along the axial direction of the motor rotor 1 .

[0037] like Figure 3As shown, the axes of the induction stator 5 and the induction rotor 2 coincide, and a preset induction distance is set between the induction stator 5 and the induction rotor 2 along the axial direction of the motor rotor 1. The preset induction distance is adjusted according to actual needs, so as to accurately and efficiently obtain the position information and speed information of the induction rotor 2 through the induction stator 5. Specifically, the preset induction distance is 0mm to 3mm. If the preset induction distance is too large, the position information and speed information of the induction rotor obtained will be inaccurate. Preferably, the preset induction distance is selected as 1.5mm. When the preset induction distance is set to 1.5mm, the position information and speed information of the induction rotor 2 can be accurately and efficiently obtained through the induction stator 5.

[0038] In one embodiment, a rotating shaft 11 is provided on the motor rotor 1, a circulation cavity 12 for flowing coolant is provided inside the rotating shaft 11, a cooling channel 13 is provided on the balance plate 3, one end of the cooling channel 13 is connected to the circulation cavity 12, and the other end of the cooling channel 13 is arranged toward the induction stator 5.

[0039] The motor rotor 1 is provided with a rotating shaft 11, the motor rotor 1 is passed through the rotating shaft 11, and the motor rotor 1 and the rotating shaft 11 rotate synchronously through a corresponding connection structure. Figure 6 As shown, the interior of the rotating shaft 11 is hollowed out to form a flow cavity 12, which is preferably cylindrical. A coolant flows in the flow cavity 12, and the coolant is used to cool the induction stator 5, thereby reducing the operating temperature of the induction stator 5 and improving the service life of the induction stator 5. Specifically, as Figure 5 As shown, a cooling channel 13 is provided on the balance plate 3, and the cooling channels 13 are arranged in a circular array along the axis of the balance plate 3 to further improve the uniformity of cooling; one end of the cooling channel 13 is connected to the circulation cavity 12 (not shown in the figure), so the coolant in the circulation cavity 12 can be drained to the cooling channel 13, and in addition, the other end of the cooling channel 13 is arranged toward the induction stator 5, so the coolant in the circulation cavity 12 flows toward the induction stator 5 under the drainage of the cooling channel 13, so as to cool the induction stator 5 by the coolant.

[0040] In one embodiment, the cooling channel 13 includes an oil storage hole 14 and an oil injection channel 15 that are interconnected. The oil storage hole 14 is connected to the flow cavity 12 , and an outlet of the oil injection channel 15 is arranged toward the induction stator 5 .

[0041] like Figure 5As shown, specifically, the cooling channel 13 includes an oil storage hole 14 and an oil injection passage 15. The oil storage hole 14 is connected with the oil injection passage 15, and the oil storage hole 14 is responsible for connecting the circulation cavity 12 with the oil injection passage 15. The oil injection passage 15 is preferably cylindrical, and one end of the oil injection passage 15 is connected with the circulation cavity 12. The axis of the oil injection passage 15 is arranged toward the induction stator 5. The oil injection passage 15 plays a role in draining the coolant, so that the coolant in the oil injection passage 15 is sprayed toward the induction stator 5 after passing through the oil injection passage 15, so as to cool the induction stator 5 by the coolant drained to the induction stator 5, reduce the operating temperature of the induction stator 5, and further improve the service life of the induction stator 5.

[0042] Embodiment 2

[0043] A motor is provided, comprising the above-mentioned motor signal acquisition device and a motor rotor 1, the motor further comprising a housing 16, an induction stator 5 being arranged on the housing 16, the motor signal acquisition assembly comprising an induction rotor 2, a balancing plate 3 being arranged at the end of the motor rotor 1, the induction rotor 2 comprising a plurality of induction wings 4, the plurality of induction wings 4 being evenly distributed around the axis of the motor rotor 1, and the plurality of induction wings 4 being integrally formed with the balancing plate 3.

[0044] like Figure 6 As shown, the motor includes a motor signal acquisition device, a motor rotor 1 and a housing 16. Specifically, the induction rotor 2 is arranged on the motor rotor 1, and the induction stator 5 is arranged on the housing 16. Therefore, the induction stator 5 is fixed on the housing 16 of the motor, and the induction rotor 2 is fixed on the motor rotor 1. When the motor is working, the motor rotor 1 rotates relative to the housing 16, and the induction rotor 2 on the motor rotor 1 rotates relative to the induction stator 5 on the housing 16. Therefore, the position information and speed information of the motor rotor 1 can be obtained through the electromagnetic induction between the induction stator 5 and the induction rotor 2. Since the induction rotor 2 is integrated into the balance plate 3, that is, the plurality of induction wings 4 are integrally formed with the balance plate 3, the assembly process of the induction rotor 2 and the balance plate 3 is avoided, which not only saves the assembly structure space of the induction rotor 2 and the balance plate 3, simplifies the structure of the motor, but also simplifies the assembly process of the motor and improves the assembly efficiency.

[0045] In one embodiment, the motor includes a motor stator 17 and a cooling channel. The motor stator 17 is provided with an armature winding 18 . The coolant in the cooling channel flows through the induction stator 5 and the armature winding 18 .

[0046] The motor includes a motor stator 17 and a motor rotor 1, wherein an armature winding 18 is arranged on the motor stator 17, and a cooling channel is arranged in the motor, wherein the cooling channel includes a flow cavity 12 in the rotating shaft 11, a cooling channel 13 on the balancing plate 3, and a sub-channel (not shown in the figure) between the balancing plate 3 and the casing, and the coolant circulates in the flow cavity 12, the cooling channel 13 and the sub-channel in sequence, that is, the coolant circulates in the cooling channel, and since the outlet of the oil injection channel 15 on the balancing plate 3 faces the induction stator 5, the coolant can dissipate heat for the induction stator 5; in addition, when the coolant flows from the cooling channel 13 to the sub-channel, the coolant in the sub-channel flows through the armature winding 18, so the coolant can not only dissipate heat for the induction stator 5, but also dissipate heat for the armature winding 18, so as to improve the life of the motor.

[0047] Embodiment 3

[0048] A vehicle is provided, comprising the above-mentioned motor, wherein the motor comprises a motor signal acquisition component, a motor rotor 1 and a housing 16, an induction stator 5 is arranged on the housing 16, the motor signal acquisition component comprises an induction rotor 2, a balance plate 3 is arranged at the end of the motor rotor 1, the induction rotor 2 comprises a plurality of induction wings 4, the plurality of induction wings 4 are evenly distributed around the axis of the motor rotor 1, and the plurality of induction wings 4 are integrally formed with the balance plate 3.

[0049] Since the induction rotor 2 is integrated onto the balancing plate 3, that is, the plurality of induction wings 4 and the balancing plate 3 are integrally formed, the assembly process of the induction rotor 2 and the balancing plate 3 is avoided, which not only saves the assembly structure space of the induction rotor 2 and the balancing plate 3, simplifies the structure of the motor, and thus reduces the occupied space of the vehicle; it also simplifies the assembly process of the motor and improves the assembly efficiency of the entire vehicle.

[0050] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A motor signal acquisition component, arranged on a motor rotor (1), characterized in that: The motor signal acquisition component comprises an induction rotor (2), a balance plate (3) is arranged at the end of the motor rotor (1), the induction rotor (2) comprises a plurality of induction wings (4), the plurality of induction wings (4) are evenly distributed around the axis of the motor rotor (1), and the plurality of induction wings (4) are integrally formed with the balance plate (3).

2. The motor signal acquisition component according to claim 1, characterized in that: The motor signal acquisition component further comprises an induction stator (5), an induction cavity (6) is formed between two adjacent induction wings (4), and the induction stator (5) is used to generate a changing signal according to the position change of the induction wings (4) and the induction cavity (6).

3. The motor signal acquisition component according to claim 1, characterized in that: A plurality of first induction cavities (7) are formed on a surface of the balancing plate (3) away from the motor rotor (1) in an axially inwardly recessed manner. The plurality of first induction cavities (7) are evenly distributed around the axis of the motor rotor (1), and a first induction wing (8) is formed between two adjacent first induction cavities (7).

4. The motor signal acquisition component according to claim 1, characterized in that: A plurality of second sensing wings (9) are formed on the surface of the balancing plate (3) away from the motor rotor (1) and protrude outward in the axial direction. The plurality of second sensing wings (9) are evenly distributed around the axis of the motor rotor (1), and a second sensing cavity (10) is formed between two adjacent second sensing wings (9).

5. The motor signal acquisition component according to claim 2, characterized in that: A preset induction distance is set between the induction stator (5) and the induction rotor (2) along the axial direction of the motor rotor (1).

6. The motor signal acquisition component according to claim 2, characterized in that: The motor rotor (1) is provided with a rotating shaft (11), the rotating shaft (11) is provided with a circulation cavity (12) for flowing cooling liquid inside, the balancing plate (3) is provided with a cooling channel (13), one end of the cooling channel (13) is connected to the circulation cavity (12), and the other end of the cooling channel (13) is arranged toward the induction stator (5).

7. The motor signal acquisition component according to claim 6, characterized in that: The cooling channel (13) comprises an oil storage hole (14) and an oil injection channel (15) which are interconnected, the oil storage hole (14) is connected to the circulation cavity (12), and the outlet of the oil injection channel (15) is arranged toward the induction stator (5).

8. A motor, characterized in that: It comprises a motor signal acquisition component and a motor rotor (1) as claimed in any one of claims 2 to 7, wherein the motor comprises a housing (16), and an induction stator (5) is arranged on the housing (16).

9. The motor according to claim 8, characterized in that: The motor comprises a motor stator (17) and a cooling channel, an armature winding (18) is arranged on the motor stator (17), and a coolant in the cooling channel flows through the induction stator (5) and the armature winding (18).

10. A vehicle, characterized in that: Comprising the motor as claimed in any one of claims 8 to 9.

Images