CN205283347U - Built -in sinusoidal wave motor and hall assembly and sinusoidal wave motor stator of hall groove 48 and hall - Google Patents

Abstract

The utility model discloses a sine wave motor with a Hall slot of 48° and a Hall built-in, a Hall component and a sine wave motor stator, comprising a casing, a stator core (1), a rotor, an end cover and a Hall component. The stator core (1) is provided with the first Hall slot (3), the second Hall slot (4), the third Hall slot (5), the second Hall slot (4) and the first Hall slot ( 3), the central angle of the third Hall slot (5) is 48 °; the Hall assembly includes a PCB circuit board, a first Hall sensor, a second Hall sensor, a third Hall sensor, the first Hall sensor The output terminals of the Hall sensor and the third Hall sensor are positively connected to the PCB circuit board, while the output terminals of the second Hall sensor are reversely connected to the PCB circuit board. The utility model can effectively improve the problem that the boundary line between the rotor surfaces is not neat and clear, which causes signal vibration of the Hall sensor, thereby effectively reducing the influence of the Hall sensor by the magnetic field and temperature, and further improving the stability and reliability of the motor operation.

Description

A sine wave motor with a Hall slot of 48° and a Hall built-in, a Hall assembly and a sine wave motor stator

technical field

The utility model relates to a sine wave motor in which the angle between Hall slots is 48° and the Hall is built in, and belongs to the technical field of sine wave motors.

Background technique

At present, the sine wave motor adopts the external Hall scheme, and the Hall signal angle is uncertain. It is necessary to match the controller of the motor during specific production in order to achieve the ideal control effect. However, the operation of the process is complicated, and the production process is time-consuming. Due to the errors in the operation of the workers, it is easy to cause the problem of excessive parameter differences and affect the consistency of the motor performance. This problem must be effectively solved.

The operation principle of the brushless DC motor is to rely on the rotor position sensor to detect the position signal of the rotor, and drive the switching on and off of each power switch tube connected to the armature winding through the commutation drive circuit, so as to control the electrification of the stator winding, so that The phase current of the stator commutates sequentially with the change of the rotor position, so that the magnetic field changes continuously with the rotation of the electrons, generating a rotating magnetic field synchronous with the rotor speed, and generating a constant torque to make the brushless DC motor run. The most commonly used position sensor for brushless motors is the magneto-sensitive position sensor. The main working principle of the magneto-sensitive element is based on the current effect, mainly including the Hall effect and the magnetoresistance effect. A brushless DC motor using a magnetically sensitive position sensor. The magnetically sensitive sensor is installed on the stator assembly to detect changes in the magnetic field generated by the permanent magnet and the rotor when it rotates. Patent application number 20081006245.0 and publication number CN101388591A disclose a Hall assembly structure of a DC brushless motor, which belongs to the technical field of motor manufacturing. Its circuit board (PCB circuit board) is welded and fixed on the circuit board by Hall pins and the coil frame fixed by the stator punching sheet, which forms a mounting hole between the end of the outer ring of the coil frame and the circuit board. , thereby solving the problem of the Hall element of the mounting structure. However, with the development of technology, the external Hall scheme is adopted for the sine wave. This scheme has high requirements on the accuracy of the controller. It is difficult for most manufacturers in the existing market to achieve a better matching scheme. The calculation and adjustment of the angle is difficult to control reasonably. The change of the Hall angle has an impact on the mechanical characteristics of the motor, the magnetomotive force of the quadrature axis, and the torque ripple, which makes it difficult to determine important parameters such as current and torque, increases manufacturing costs in production, and reduces product yield. At the same time, when the Hall is external, it is easily disturbed by the stator magnetic field, and the boundary line between the two magnetic poles of the rotor is irregular and clear, which is easy to cause the Hall signal to jitter, thereby affecting the stability and efficiency of the motor.

Utility model content

The utility model aims at the deficiencies of the above problems, and proposes a sine wave motor with a Hall groove of 48° and a built-in Hall, which can effectively improve the problem that the boundary line between the rotor surfaces is not neat and clear, which causes the Hall sensor signal to jitter, Thereby effectively reducing the influence of the Hall sensor by the magnetic field and temperature, thereby improving the stability and reliability of the motor operation.

The utility model proposes the technical scheme for solving the above-mentioned technical problems:

A sine wave motor with a Hall groove of 48° and a built-in Hall, comprising a shell with one end open, a stator core (1), a rotor, an end cover with a through hole, and a Hall assembly, and the stator core (1) is installed and fixedly connected with the casing, and the rotor is arranged in the stator core (1), the end cover is installed on the open end of the casing, and the rotor shaft on the rotor protrudes to the end cover through the through hole Outside; the stator core (1) is provided with more than one pear-shaped stator slots (2), the stator slots (2) are evenly distributed along the circumferential direction, and the openings of the stator slots (2) face the rotor; the The stator core (1) is also provided with a first Hall slot (3), a second Hall slot (4), a third Hall slot (5), and the first Hall slot (3), the second The Hall slots (4) and the third Hall slots (5) are sequentially distributed along the circumferential direction of the stator core (1), and the central angle between the first Hall slot (3) and the second Hall slot (4) is 48 °, the central angle between the second Hall slot (4) and the third Hall slot (5) is 48°; and the first Hall slot (3) is provided with a first Hall slot (31), The second Hall slot (4) is provided with a second Hall slot (41), the third Hall slot (5) is provided with a third Hall slot (51), and the first Hall slot The opening (31), the second Hall notch (41), and the third Hall notch (51) all point to the rotor; the Hall assembly includes a PCB circuit board, a first Hall sensor, a second Hall sensor, the third Hall sensor, the first Hall sensor, the second Hall sensor, and the third Hall sensor are sequentially arranged in the first Hall slot (3), the second Hall slot (4), the second In the Hall slot (5), at the same time, the output terminals of the first Hall sensor and the third Hall sensor are positively connected to the PCB circuit board, while the output terminals of the second Hall sensor are reversely connected to the PCB circuit board.

Preferably: the diameter of the stator is 120-133mm.

Preferably: the number of the stator slots (2) is 12.

Preferably: the first Hall sensor, the second Hall sensor, and the third Hall sensor are all fixed on the PCB circuit board, and the central angle of the first Hall sensor and the second Hall sensor is 48°, and the second Hall sensor The central angle of the Hall sensor and the third Hall sensor is 48°.

A Hall component, comprising a PCB circuit board, a first Hall sensor, a second Hall sensor, and a third Hall sensor, the first Hall sensor, the second Hall sensor, and the third Hall sensor are arranged in sequence on the PCB circuit board, and the output terminals of the first Hall sensor and the third Hall sensor are directly connected to the PCB circuit board, and the output terminals of the second Hall sensor are reversely connected to the PCB circuit board; in addition, the first Hall sensor The sensor, the second Hall sensor, and the third Hall sensor are located on the same circle, and the central angle of the first Hall sensor and the second Hall sensor is 48°, the second Hall sensor, the third Hall sensor The central angle of the circle is 48°.

A sine wave motor stator, comprising a hollow stator core (1) for placing a rotor, the stator core (1) is provided with more than one pear-shaped stator slots (2), and the stator slots (2) are arranged along the Evenly distributed in the circumferential direction, and the opening of the stator slot (2) faces the rotor; the stator core (1) is also provided with a first Hall slot (3), a second Hall slot (4), a third Hall slot Hall slots (5), the first Hall slots (3), the second Hall slots (4), and the third Hall slots (5) are distributed sequentially along the circumferential direction of the stator core (1), and the first Hall slots The central angle of the Hall groove (3) and the second Hall groove (4) is 48 °, and the central angle of the second Hall groove (4) and the third Hall groove (5) is 48 °; and the first A first Hall slot (31) is provided on the Hall slot (3), a second Hall slot (41) is provided on the second Hall slot (4), and a second Hall slot (41) is provided on the third Hall slot (5). There is a third Hall notch (51), and the directions of the first Hall notch (31), the second Hall notch (41) and the third Hall notch (51) all point to the rotor.

A method for determining a hall slot of a sine wave motor, comprising the following steps:

Step 1, taking the line connecting the center of any stator slot (2) and the center of the stator core (1) as the baseline, and using the baseline as the Hall position centerline;

Step 2: Taking the center of the stator core (1) as the center, array 15 Hall position centerlines determined in step 1 along the diameter of the stator core (1) to obtain 15 Halls evenly distributed along the circumference of the stator core (1). centerline of the location;

Step 3, mark the three phases of the motor in turn on the center line of the Hall position obtained in step 2;

Step 4, according to the three phases of the motor determined in step 3, determine the position of the center line of the Hall position of each phase, which is the position of the Hall slot.

Compared with the prior art, a sine wave motor with a Hall slot of 48° and a Hall built-in in the utility model has the following beneficial effects:

1. The positions of the three Hall sensors are in the stator slot, and the angle between two adjacent Hall sensors is 48°. The Hall is embedded on the stator coil winding, the middle Hall (the second Hall sensor) is installed reversely, and the Halls on both sides (the first Hall sensor and the third Hall sensor) are installed upright, so as to realize the built-in Hall of the sine wave control program . This scheme determines the Hall at a fixed angle of 48°, avoiding the need to match the angle of the Hall according to the controller when it is external, and then determine the operating parameters of the motor, which greatly reduces the current and torque of the Hall and the motor. Uncertain performance, so as to ensure the stability and consistency of the Hall signal, can effectively improve the power performance of the motor. At the same time, the built-in Hall solution saves the motor assembly space and production cost compared with the external Hall, reduces the complexity of operation, and reduces the human error of workers.

2. Due to the reverse installation of the hall in the middle, it is more conducive to the matching of the controller, so that the motor and the controller can achieve a good matching effect.

3. In the case of determining the Hall angle and the diameter of the stator, the Hall element is directly fixed on the PCB circuit board, which saves costs, facilitates installation, and saves time and waste of raw materials for the actual operating staff. , which is also conducive to matching with the controller, improving the motor torque and work efficiency, and ensuring the stability and reliability of the motor during operation.

To sum up, the utility model can effectively reduce the difficulty of controller matching, achieve better matching effect, and improve torque. At the same time, it saves motor space and production costs, reduces the difficulty of workers' operation, and ensures the consistency and stability of motor performance. Therefore, the utility model can effectively improve the problem that the boundary line between the rotor surfaces is not neat and clear, which causes the Hall sensor signal to jitter, thereby effectively reducing the effect of the Hall sensor on the magnetic field and temperature, thereby improving the stability and reliability of the motor operation .

Description of drawings

Fig. 1 is the utility model sine wave motor stator structural representation;

Figure 2 is a layout diagram of the Hall angle.

Where: 1 is the stator core, 2 is the stator slot, 3 is the first Hall slot, 4 is the second Hall slot, and 5 is the third Hall slot.

detailed description

The accompanying drawing discloses a non-restrictive structural schematic diagram of a preferred embodiment of the utility model, and the technical solution of the utility model will be described in detail below in conjunction with the accompanying drawings.

Example

A kind of Hall slot 48 ° and Hall built-in sine wave motor, as shown in Figures 1 and 2, includes a shell with one end open, a stator core 1, a rotor, an end cover with a through hole and a Hall assembly, the The stator core 1 is installed in the casing and fixedly connected with the casing, while the rotor is arranged in the stator core 1, the end cover is installed on the open end of the casing, and the rotor shaft on the rotor protrudes to the end through the through hole. The outer side of the cover; the stator core 1 is provided with more than one pear-shaped stator slot 2, the stator slot 2 is evenly distributed along the circumferential direction, and the opening of the stator slot 2 faces the rotor; the stator core 1 is also The first Hall slot 3, the second Hall slot 4, and the third Hall slot 5 are provided, and the first Hall slot 3, the second Hall slot 4, and the third Hall slot 5 are arranged along the stator core 1. The circumferential direction is sequentially distributed, and the central angle between the first Hall groove 3 and the second Hall groove 4 is 48°, and the central angle between the second Hall groove 4 and the third Hall groove 5 is 48°; and the first Hall groove A Hall slot 3 is provided with a first Hall slot 31, a second Hall slot 4 is provided with a second Hall slot 41, and a third Hall slot 5 is provided with a third Hall slot 51, And the direction of the first Hall notch 31, the second Hall notch 41, and the third Hall notch 51 all point to the rotor; the Hall assembly includes a PCB circuit board, a first Hall sensor, a second Hall sensor, the third Hall sensor, the first Hall sensor, the second Hall sensor, and the third Hall sensor are sequentially arranged in the first Hall slot 3, the second Hall slot 4, and the second Hall slot In the groove 5, the output terminals of the first Hall sensor and the third Hall sensor are positively connected to the PCB circuit board, while the output terminals of the second Hall sensor are reversely connected to the PCB circuit board.

The diameter of the stator is 120-133mm.

The number of the stator slots 2 is 12.

The first Hall sensor, the second Hall sensor, and the third Hall sensor are all fixed on the PCB circuit board, and the central angle of the first Hall sensor and the second Hall sensor is 48°, and the second Hall sensor , The central angle of the third Hall sensor is 48°.

A Hall component, comprising a PCB circuit board, a first Hall sensor, a second Hall sensor, and a third Hall sensor, the first Hall sensor, the second Hall sensor, and the third Hall sensor are arranged in sequence on the PCB circuit board, and the output terminals of the first Hall sensor and the third Hall sensor are directly connected to the PCB circuit board, and the output terminals of the second Hall sensor are reversely connected to the PCB circuit board; in addition, the first Hall sensor The sensor, the second Hall sensor, and the third Hall sensor are located on the same circle, and the central angle of the first Hall sensor and the second Hall sensor is 48°, the second Hall sensor, the third Hall sensor The central angle of the circle is 48°.

A sine wave motor stator, comprising a hollow stator core 1 for placing a rotor, the stator core 1 is provided with more than one pear-shaped stator slots 2, the stator slots 2 are evenly distributed along the circumferential direction, and the The opening of the stator slot 2 faces the rotor; the stator core 1 is also provided with a first Hall slot 3, a second Hall slot 4, and a third Hall slot 5, and the first Hall slot 3, the second Hall slot The Hall slot 4 and the third Hall slot 5 are distributed sequentially along the circumferential direction of the stator core 1, and the central angle between the first Hall slot 3 and the second Hall slot 4 is 48°, and the second Hall slot 4 and the third Hall slot The central angle of the Hall groove 5 is 48°; and the first Hall groove 3 is provided with a first Hall groove 31, the second Hall groove 4 is provided with a second Hall groove 41, and the third Hall groove 4 is provided with a second Hall groove 41. The Hall slot 5 is provided with a third Hall slot 51 , and the directions of the first Hall slot 31 , the second Hall slot 41 and the third Hall slot 51 are all directed to the rotor.

A method for determining a hall slot of a sine wave motor, comprising the following steps:

Step 1, take the line connecting the center of any stator slot 2 and the center of the stator core 1 as the baseline, and use this baseline as the Hall position centerline;

Step 2: Taking the center of the stator core 1 as the center, array 15 Hall position centerlines determined in step 1 along the diameter of the stator core 1 to obtain 15 Hall position centerlines evenly distributed along the circumference of the stator core 1;

Step 3, mark the three phases of the motor in turn on the center line of the Hall position obtained in step 2;

Step 4, according to the three phases of the motor determined in step 3, determine the position of the center line of the Hall position of each phase (mainly consider the space on the stamping plate to open the Hall fixing slot) and wiring, and this position is the position of the Hall slot.

The utility model solidifies and installs the Hall angle in advance, and confirms the Hall in the early stage, so as to ensure the accuracy and consistency of the motor operating parameters, simplify the production process and operation process, and at the same time, the matching effect of the scheme is more excellent, and the performance is outstanding , Stable operation, with great economic and market effect, the hall is inlaid on the stator coil winding, the hall in the middle is reversed, and the halls on both sides are installed to realize the built-in hall of the sine wave control program. This scheme determines the Hall at a fixed angle, which avoids the need to match the angle of the Hall according to the controller when it is installed externally, and then determines the operating parameters of the motor, which greatly reduces the performance of the Hall and the motor current, torque, etc. Uncertain type, so as to ensure the stability and consistency of the Hall signal, and can effectively improve the power performance of the motor. At the same time, the built-in Hall solution saves the motor assembly space and production cost compared with the external Hall, reduces the complexity of operation, and reduces the human error of workers. After a large number of installation tests in our company, compared with ordinary square wave motors, the torque of this scheme is increased by 15%, the efficiency is increased by more than 5%, and the overall energy efficiency reaches more than 85%, which has good economic value and energy-saving effect. At the same time, due to the reverse installation of the middle hall, it is more conducive to the matching of the controller, so that the motor and the controller can achieve a good matching effect.

The preferred specific embodiments of the utility model described above in conjunction with the accompanying drawings are only used to illustrate the implementation of the utility model, rather than as limitations on the purpose of the utility model and the content and scope of the appended claims. Technical Essence Any simple modifications, equivalent changes and modifications made to the above embodiments still belong to the technology and rights protection category of the present utility model.

Claims (6)

1. a Hull Cell 48 �� and the built-in sinusoidal wave motor of Huo Er, it is characterized in that: comprise the shell of one end open, stator core (1), rotor, with the end cap of through hole and Hall subassembly, described stator core (1) is installed with in shell, and be fixedly connected with shell, and described rotor is arranged in stator core (1), described end cap is arranged on the opening end of shell, and the rotor spindle on rotor reaches the outside of end cap through through hole; Being provided with more than one pyriform stator groove (2) in described stator core (1), described stator groove (2) is uniformly distributed circumferentially, and the opening of described stator groove (2) is towards rotor; Described stator core (1) is also provided with the first Hull Cell (3), the 2nd Hull Cell (4), the 3rd Hull Cell (5), described first Hull Cell (3), the 2nd Hull Cell (4), the 3rd Hull Cell (5) distribute successively along the circumference of stator core (1), and first the central angle of Hull Cell (3) and the 2nd Hull Cell (4) be 48 ��, the 2nd Hull Cell (4) is 48 �� with the central angle of the 3rd Hull Cell (5); And described first Hull Cell (3) has been offered the first Hull Cell mouth (31), 2nd Hull Cell (4) has been offered the 2nd Hull Cell mouth (41), 3rd Hull Cell (5) has been offered the 3rd Hull Cell mouth (51), and described first Hull Cell mouth (31), the 2nd Hull Cell mouth (41), the 3rd Hull Cell mouth (51) towards all pointing to rotor; Described Hall subassembly comprises PCB, the first hall sensing device, the 2nd hall sensing device, the 3rd hall sensing device, described first hall sensing device, the 2nd hall sensing device, the 3rd hall sensing device are set in turn in the first Hull Cell (3), the 2nd Hull Cell (4), the 2nd Hull Cell (5), the output terminal of described first hall sensing device, the 3rd hall sensing device and PCB just connect simultaneously, and the output terminal of the 2nd hall sensing device and PCB reversal connection.

2. Hull Cell according to claim 1 48 �� and the built-in sinusoidal wave motor of Huo Er, it is characterised in that: described stator diameter 120-133mm.

3. Hull Cell according to claim 1 48 �� and the built-in sinusoidal wave motor of Huo Er, it is characterised in that: the number of described stator groove (2) is 12.

4. Hull Cell according to claim 1 48 �� and the built-in sinusoidal wave motor of Huo Er, it is characterized in that: described first hall sensing device, the 2nd hall sensing device, the 3rd hall sensing device are all fixed in PCB, and 48 ��, the central angle of the first hall sensing device, the 2nd hall sensing device, 48 ��, the central angle of the 2nd hall sensing device, the 3rd hall sensing device.

5. a Hall subassembly, it is characterized in that: comprise PCB, the first hall sensing device, the 2nd hall sensing device, the 3rd hall sensing device, described first hall sensing device, the 2nd hall sensing device, the 3rd hall sensing device are set in turn in PCB, and the output terminal of described first hall sensing device, the 3rd hall sensing device and PCB just connect, and the output terminal of the 2nd hall sensing device and PCB reversal connection; Other first hall sensing device, the 2nd hall sensing device, the 3rd hall sensing device are positioned on same circle, and 48 ��, the central angle of described first hall sensing device, the 2nd hall sensing device, 48 ��, the central angle of the 2nd hall sensing device, the 3rd hall sensing device.

6. a sinusoidal wave motor stator, comprise the inner hollow stator core (1) for placing rotor, it is characterized in that: described stator core (1) is provided with more than one pyriform stator groove (2), described stator groove (2) is uniformly distributed circumferentially, and the opening of described stator groove (2) is towards rotor; Described stator core (1) is also provided with the first Hull Cell (3), the 2nd Hull Cell (4), the 3rd Hull Cell (5), described first Hull Cell (3), the 2nd Hull Cell (4), the 3rd Hull Cell (5) distribute successively along the circumference of stator core (1), and first the central angle of Hull Cell (3) and the 2nd Hull Cell (4) be 48 ��, the 2nd Hull Cell (4) is 48 �� with the central angle of the 3rd Hull Cell (5); And described first Hull Cell (3) has been offered the first Hull Cell mouth (31), 2nd Hull Cell (4) has been offered the 2nd Hull Cell mouth (41), 3rd Hull Cell (5) has been offered the 3rd Hull Cell mouth (51), and described first Hull Cell mouth (31), the 2nd Hull Cell mouth (41), the 3rd Hull Cell mouth (51) towards all pointing to rotor.