Hall type speed detection device for wheels of electric vehicle

Abstract

The utility model relates to an electric vehicle wheel Hall type speed detection device which comprises an installation disc, a fixing support, a Hall sensor body, a wheel and an axle, the wheel is rotatably arranged on the axle, the center of the installation disc penetrates through the axle to be in threaded connection with the wheel, and a plurality of magnetic steels are arranged on the side face of the installation disc in the circumferential direction. The Hall sensor body is arranged on the fixing support and faces the rotation line of the magnetic steel, and the fixing support is arranged on the wheel shaft in a sleeving mode. According to the Hall type speed detection device for the wheels of the electric vehicle, the Hall element with high sensitivity is adopted, so that the accuracy and the stability of speed detection are improved; the magnetic steel is not directly installed on the electric vehicle wheel, so that the magnetic steel can be suitable for electric vehicle wheels of different specifications, and the adaptability is high; and the mounting disc and the fixing bracket are both concentrically arranged with the wheel shaft, so that the matching precision of the Hall sensor main body and the magnetic steel is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric vehicle speed detection, and particularly relates to a Hall-type speed detection device for an electric vehicle wheel. Background Art

[0002] With the rapid development of the electric vehicle market, the performance requirements for electric vehicles are getting higher and higher. As an important part of the electric vehicle control system, the accuracy and stability of the speed sensor are directly related to the driving safety and performance of the electric vehicle. At present, traditional electric vehicle speed sensors have problems such as complex structure, high cost, difficult maintenance, and low versatility. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a Hall-type speed detection device for electric vehicle wheels to address the deficiencies in the prior art. The device has a simple structure, is easy to install and disassemble, is convenient for later maintenance, and can also be applied to electric vehicle wheels of different specifications.

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

[0005] A Hall-type speed detection device for an electric vehicle wheel comprises a mounting plate, a fixing bracket, a Hall sensor body, a wheel and an axle. The wheel is rotatably arranged on the axle. The center of the mounting plate passes through the axle and is threadedly connected to the wheel. A plurality of magnets are arranged along the circumferential direction on the side surface of the mounting plate. The Hall sensor body is arranged on the fixing bracket and faces the rotation line of the magnet. The fixing bracket is sleeved on the axle.

[0006] In order to better realize the utility model, further optimization is made in the above structure, and the fixed bracket and the wheel axle are connected by interference fit.

[0007] In order to better implement the present invention, further optimization is made in the above structure, and the number of magnetic steels is 24.

[0008] In order to better realize the utility model, further optimization is made in the above structure, and the magnetic steel is embedded in the side of the installation plate.

[0009] In order to better realize the utility model, further optimization is made in the above structure, and the magnetic steel is evenly distributed along the circumferential direction.

[0010] In order to better implement the utility model, further optimization is made in the above structure, and the main body of the Hall sensor is perpendicular to the rotation line of the magnetic steel.

[0011] In order to better realize the utility model, the above structure is further optimized. A boss is provided at the center of the mounting plate, a threaded hole is provided at the center of the boss, and the mounting plate is threadedly connected to the wheel through the threaded hole on the boss.

[0012] In order to better implement the utility model, further optimization is made in the above structure, and the Hall sensor body is fixedly connected to the fixing bracket by screws.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The electric vehicle wheel Hall-type speed detection device provided by the utility model adopts a high-sensitivity Hall element, which improves the accuracy and stability of speed detection; the electric vehicle wheel adopts a detachable structure, which is convenient for later maintenance; because the magnetic steel is not directly installed on the electric vehicle wheel, it can also be applicable to electric vehicle wheels of different specifications, and has strong adaptability; secondly, the mounting plate and the fixing bracket are both concentrically arranged with the wheel axle, and the accuracy of the cooperation between the Hall sensor body and the magnetic steel is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the Hall-type speed detection device for electric vehicle wheels of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the installation disk in the utility model;

[0018] Figure 3 The utility model is a signal processing circuit diagram.

[0019] In the figure:

[0020] 1-mounting plate, 101-boss, 1011-threaded hole, 2-fixing bracket, 3-Hall sensor body, 4-wheel, 5-axle, 6-magnet. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] Reference Figure 1 and Figure 2 , a schematic structural diagram of a Hall-type speed detection device for an electric vehicle wheel provided by the utility model, comprising a mounting plate 1, a fixing bracket 2, a Hall sensor body 3, a wheel 4 and an axle 5, wherein the wheel 4 is rotatably arranged on the axle 5, and the center of the mounting plate 1 passes through the axle 5 and is threadedly connected to the wheel 4, which is convenient for later disassembly and maintenance. A magnetic steel 6 is arranged on the side of the mounting plate 1 along the circumferential direction. Since the magnetic steel 6 is not directly mounted on the electric vehicle wheel 4, it can also be applied to electric vehicle wheels of different specifications, and has strong adaptability. The magnetic steel 6 is uniformly embedded in the side of the mounting plate 1 along the circumferential direction, and the number of the magnetic steel 6 is 24, and 24 signals will be output for each rotation.

[0025] The Hall sensor body 3 is fixedly connected to the fixed bracket 2 by screws, which is convenient for later disassembly and maintenance. The fixed bracket 2 is sleeved on the axle 5, and the mounting plate 1 and the fixed bracket 2 are both concentrically arranged with the axle 5, so that the Hall sensor body 3 and the magnetic steel 6 have higher matching accuracy. The fixed bracket 2 and the axle 5 are connected by interference fit. The Hall sensor body 3 is perpendicular to the rotation line of the magnetic steel 6, so that the direction of the magnetic field is perpendicular to the Hall element, which can improve the detection accuracy of the Hall element.

[0026] A boss 101 is provided at the center of the mounting plate 1, and a threaded hole 1011 is provided at the center of the boss 101. The mounting plate 1 is threadedly connected to the wheel 4 through the threaded hole 1011 on the boss 101. The thickened boss 101 makes the mounting plate 1 more firmly connected to the wheel 4, thereby improving the connection strength.

[0027] Reference Figure 3 , the utility model provides a signal processing circuit diagram, wherein the port is a universal input port (without an anti-reverse diode).

[0028] Working principle: When the wheel 4 rotates, the mounting plate 1 threadedly connected to the wheel 4 rotates together, and the Hall sensor body 3 on the fixed bracket 2 detects the magnetic field changes caused by the rotation of the wheel 4. The Hall element detects the magnetic field changes caused by the rotation of the wheel 4 and transmits the information to the signal processing circuit. The signal processing circuit processes the detected signal and outputs a digital signal for use by the electric vehicle control system.

[0029] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A Hall-type speed detection device for electric vehicle wheels, characterized in that: The invention comprises a mounting plate (1), a fixing bracket (2), a Hall sensor body (3), a wheel (4) and a wheel axle (5); the wheel (4) is rotatably mounted on the wheel axle (5); the center of the mounting plate (1) passes through the wheel axle (5) and is threadedly connected to the wheel (4); a plurality of magnetic steels (6) are arranged on the side surface of the mounting plate (1) along the circumferential direction; the Hall sensor body (3) is arranged on the fixing bracket (2) and faces the rotation line of the magnetic steel (6); and the fixing bracket (2) is sleeved on the wheel axle (5).

2. The Hall-type speed detection device for electric vehicle wheels according to claim 1, characterized in that: The fixed bracket (2) and the wheel axle (5) are connected by interference fit.

3. The Hall-type speed detection device for electric vehicle wheels according to claim 2 is characterized in that: The number of the magnetic steels (6) is 24.

4. The Hall-type speed detection device for electric vehicle wheels according to claim 3 is characterized in that: The magnetic steel (6) is embedded in the side of the mounting plate (1).

5. The Hall-type speed detection device for electric vehicle wheels according to claim 4, characterized in that: The magnetic steel (6) is evenly distributed along the circumferential direction.

6. The Hall-type speed detection device for electric vehicle wheels according to claim 5, characterized in that: The Hall sensor body (3) is perpendicular to the rotation line of the magnetic steel (6).

7. The Hall-type speed detection device for electric vehicle wheels according to any one of claims 1 to 6, characterized in that: A boss (101) is provided at the center of the mounting plate (1), a threaded hole (1011) is provided at the center of the boss (101), and the mounting plate (1) is threadedly connected to the wheel (4) via the threaded hole (1011) on the boss (101).

8. The Hall-type speed detection device for electric vehicle wheels according to claim 7, characterized in that: The Hall sensor body (3) is fixedly connected to the fixing bracket (2) via screws.

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