Driving and control integrated direct current permanent magnet brushless motor for solar power generation

Abstract

The utility model relates to a drive and control integrated DC permanent magnet brushless motor for solar power generation, which comprises a motor body, a rear cover and a drive circuit board, an outer groove is arranged on the outer peripheral surface of the rear end of a shell of the motor body, a cable hole is arranged at the rear end of the shell of the motor body, and the drive circuit board is arranged in the rear cover. An inner groove connected with the outer groove is formed in an opening of the rear cover, and an aviation plug connected with the driving circuit board is installed on the outer side of the rear cover. In the integrated direct current permanent magnet brushless motor, the driver and the motor are integrated, the cable installation process is simplified, and the manufacturing cost is reduced. Driving control and the motor are integrated, so that the external driving space is greatly saved, cables and accessories for connecting the motor and the driver are reduced, the cost of driving control is reduced, and the risks of water leakage and aging during outdoor use are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current motor manufacturing, in particular to a direct current permanent magnet brushless motor for solar power generation drive and control integration. Background Art

[0002] In the traditional solar photovoltaic industry, the DC brushless motor of the photovoltaic sun tracking system requires an independent drive control system to control it, so that the solar panel can automatically track the sun to maximize the utilization of solar energy. In this drive control system, many cables are required for connection, and many cables are also required between the drive and the power supply. The entire control system has a complicated component structure and is time-consuming and labor-intensive to install. Utility Model Content

[0003] The purpose of the utility model is to provide a DC permanent magnet brushless motor for solar power generation and drive control to solve the problems encountered in the above-mentioned background technology.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A DC permanent magnet brushless motor for solar power generation drive and control, comprising a motor body, a rear cover and a drive circuit board, wherein an outer groove is provided on the outer peripheral surface of the rear end of the shell of the motor body, a cable hole is opened at the rear end of the shell of the motor body, the drive circuit board is installed in the rear cover, an inner groove connected to the outer groove is provided at the opening of the rear cover, and an aviation plug connected to the drive circuit board is installed on the outer side of the rear cover.

[0006] In the above scheme, the rear cover includes a shell, the shell is fixedly connected to the driving circuit board through screw fixing positions on both sides, and the aviation plug is installed on the shell through a fastening plate. In addition, a breathable valve is also installed on the outer side of the shell, and the air inlet of the breathable valve is connected to the inner cavity of the rear cover. By adjusting the air pressure difference inside and outside the DC permanent magnet brushless motor, the humidity, temperature and pressure inside and outside the motor are controlled, thereby protecting the motor.

[0007] In the above scheme, the motor body includes a mounting seat, a gear mounting cavity, and a stator and rotor mounting cavity. The mounting seat is provided with a shaft output hole. The mounting seat is coaxially arranged with the gear mounting cavity and is connected to one end of the gear mounting cavity. The other end of the gear mounting cavity is coaxially arranged with the stator and rotor mounting cavity. The cable hole is opened on the outside of the stator and rotor mounting cavity.

[0008] As a preferred solution, a shaft positioning seat is provided at the connection between the gear mounting cavity and the stator and rotor mounting cavity, and a shaft hole is provided at the central axis hole of the shaft positioning seat. A screw mounting hole is also provided on the outer side of the stator and rotor mounting cavity, and the screw mounting hole is located on the outer peripheral surface of the outer end of the stator and rotor mounting cavity.

[0009] In addition, in order to facilitate installation and improve sealing performance, screws are installed on the upper and lower sides of the outer wall of the gear installation cavity, respectively, and the screws are used to fix and position the gear transmission device. A sealing groove is opened on the inner side of the mounting seat, and a rubber ring is installed in the sealing groove.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: an outer groove is provided on the outer peripheral surface of the rear end of the shell of the motor body, and a cable hole is opened at the rear end of the shell of the motor body for the passage of the cable, so as to facilitate the connection to the corresponding driving part. The driving circuit board is installed in the rear cover, the driving circuit board integrates the driver, and controls the motor through the corresponding existing control circuit. An inner groove connected to the outer groove is provided at the opening of the rear cover. The outer groove can be provided with an external thread, and the inner groove can be provided with an internal thread, so that the two are threadedly connected and fixed together after being screwed. An aviation plug connected to the driving circuit board is installed on the outside of the rear cover, which is used to improve the stability of the connection and greatly reduce the wiring space of the cable.

[0011] In addition, in this integrated DC permanent magnet brushless motor, the drive and motor are integrated into one, which simplifies the cable installation process and reduces the manufacturing cost. Integrating the drive control and the motor into one greatly saves the external drive space and reduces the cables and accessories connecting the motor and the drive, which not only reduces the cost of the drive control, but also reduces the risk of water leakage and aging when used outdoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the external structure of the rear cover of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the rear cover of the utility model;

[0016] Figure 4 It is a schematic diagram of the internal structure of the motor body in the utility model.

[0017] Numbers in the figure: 1-motor body; 10-outer groove; 11-mounting seat; 12-gear mounting cavity; 13-stator and rotor mounting cavity; 14-cable hole; 15-screw mounting hole; 16-shaft positioning seat; 17-screw; 18-sealing groove; 19-shaft output hole; 2-rear cover; 21-housing; 22-screw fixing position; 23-aviation plug; 24-fastening plate; 25-ventilation valve; 26-inner groove; 3-drive circuit board. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is now further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the relevant components of the utility model.

[0019] According to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0020] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] Embodiment 1, as Figures 1 to 3 As shown, a DC permanent magnet brushless motor for solar power generation drive and control includes a motor body 1, a rear cover 2 and a drive circuit board 3. The motor body 1 has the same internal structure as the DC brushless motor of the photovoltaic tracking system currently used, except that the outer shell has been improved.

[0022] An outer groove 10 is provided on the outer peripheral surface of the rear end of the shell of the motor body 1, and a cable hole 14 is opened at the rear end of the shell of the motor body 1 for passing the cable, so as to facilitate the connection to the corresponding driving part. The driving circuit board 3 is installed in the rear cover 2. The driving circuit board 3 integrates the driver and controls the motor through the corresponding existing control circuit. An inner groove 26 connected to the outer groove 10 is provided at the opening of the rear cover 2. The outer groove 10 can be provided with an external thread, and the inner groove 26 can be provided with an internal thread, so that the two are threadedly connected and fixed together after being screwed. An aviation plug 23 connected to the driving circuit board 3 is installed on the outer side of the rear cover 2 to improve the stability of the connection and greatly reduce the wiring space of the cable.

[0023] In this scenario, see Figure 2 and Figure 3The rear cover 2 includes a shell 21, and the shell 21 is fixedly connected to the driving circuit board 3 through screw fixing positions 22 on both sides, and the driving circuit board 3 is firmly fixed inside the cylindrical shell 21. The aviation plug 23 is installed on the shell 21 through a fastening plate 24. The fastening plate 24 is a square plate structure, which can increase the contact area between the aviation plug 23 and the shell 21, and is fixed to the shell 21 by screws.

[0024] As a preferred solution, a breathable valve 25 is also installed on the outer side of the housing 21, and the air inlet of the breathable valve 25 is connected to the inner cavity of the rear cover 2. By adjusting the air pressure difference inside and outside the DC permanent magnet brushless motor, the humidity, temperature and pressure inside and outside the motor body 1 are controlled, thereby protecting the motor. In addition, the breathable valve 25 can also constitute the exchange of air pressure with the outside and the heat dissipation.

[0025] Example 2, based on Example 1, please refer to Figure 4 The motor body 1 includes a mounting seat 11, a gear mounting cavity 12, and a stator and rotor mounting cavity 13. The motor body 1 is mainly installed with permanent magnet excitation. The structure of the excitation winding, brush, and collector ring is reduced in this motor, avoiding the occurrence of easy burning and disconnection of the excitation winding of the traditional excitation generator, and the easy wear of the brush and collector ring, making the DC permanent magnet brushless motor more reliable. A shaft output hole 19 is opened on the mounting seat 11. After the motor shaft extends out of the shaft output hole 19, it drives the solar panel to automatically track the sun.

[0026] In implementation, the mounting seat 11 is coaxially arranged with the gear mounting cavity 12 and connected to one end of the gear mounting cavity 12. The other end of the gear mounting cavity 12 is coaxially arranged with the stator-rotor mounting cavity 13, wherein the cable hole 14 is opened on the outside of the stator-rotor mounting cavity 13 for passing the cable, one side of which is connected to the permanent magnet excitation, and the other side is connected to the drive circuit board 3.

[0027] The shaft positioning seat 16 is clamped and installed at the connection between the gear installation cavity 12 and the stator and rotor installation cavity 13. The connection between the two adopts a step and cooperates with the shaft positioning seat 16 to concentrically position them. A shaft hole is opened at the central axis hole of the shaft positioning seat 16 to facilitate the installation of the shaft.

[0028] A screw mounting hole 15 is also provided on the outside of the stator and rotor mounting cavity 13. The screw mounting hole 15 is located on the outer peripheral surface of the outer end of the stator and rotor mounting cavity 13. The screw mounting hole 15 can be fixed to the rear cover 2 by installing screws. Compared with the threaded connection between the outer groove 10 and the inner groove 26, the fixing effect of the internal components in the motor is further improved.

[0029] As a preferred solution, screws 17 are respectively installed on the upper and lower sides of the outer wall of the gear installation cavity 12. The screws 17 are used to fix and position the gear transmission device. The gear transmission device is a commonly used transmission component of the current motor. The gear transmission device maintains a good transmission torque through the installation and positioning of the screws 17. In addition, when the DC permanent magnet brushless motor is installed in the equipment for use, a sealing groove 18 is opened on the inner side surface of the mounting seat 11, that is, the mounting end surface. A rubber ring is installed in the sealing groove 18 to press the mounting part to make it have good sealing performance.

[0030] To sum up, in this integrated DC permanent magnet brushless motor, the drive and the motor are integrated into one, which simplifies the cable installation process and reduces the manufacturing cost. The drive control and the motor are integrated into one, which greatly saves the external drive space and reduces the cables and accessories connecting the motor and the drive, which not only reduces the cost of drive control, but also reduces the risk of water leakage and aging when used outdoors.

[0031] Through this integrated DC permanent magnet brushless motor, in terms of reliability:

[0032] Compared with the existing technology, the traditional solution requires a cable connection between the solar motor and the drive, and both ends of the cable need highly waterproof sockets for waterproofing. Each connecting component represents a risk point of possible failure. The integrated drive-control motor omits the connecting components, reducing the risks of leakage, plastic shell and wire sheath aging, etc., thus improving reliability.

[0033] Through this integrated DC permanent magnet brushless motor, in terms of economy:

[0034] The drive-control integrated motor has a simplified structure and saves the cost of the connection part. On the other hand, the drive moves towards a miniature direction, saving the outer shell components of the drive motor itself, thereby reducing the cost and improving the economic applicability.

[0035] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. These undisclosed elements are all prior art that can be known to those skilled in the art.

[0036] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A DC permanent magnet brushless motor for solar power generation and control, characterized in that: The invention comprises a motor body (1), a rear cover (2) and a driving circuit board (3); the outer peripheral surface of the rear end of the shell of the motor body (1) is provided with an outer groove (10); the rear end of the shell of the motor body (1) is provided with a cable hole (14); the driving circuit board (3) is installed in the rear cover (2); the opening of the rear cover (2) is provided with an inner groove (26) connected to the outer groove (10); and the outer side of the rear cover (2) is provided with an aviation plug (23) connected to the driving circuit board (3).

2. The DC permanent magnet brushless motor for solar power generation and control according to claim 1, characterized in that: The rear cover (2) comprises a shell (21), the shell (21) is fixedly connected to the driving circuit board (3) via screw fixing positions (22) on both sides, and the aviation plug (23) is mounted on the shell (21) via a fastening plate (24).

3. The DC permanent magnet brushless motor for solar power generation and control according to claim 2, characterized in that: A ventilation valve (25) is also installed on the outer side of the housing (21), and the air inlet of the ventilation valve (25) is connected to the inner cavity of the rear cover (2).

4. The DC permanent magnet brushless motor for solar power generation and control according to claim 1, characterized in that: The motor body (1) comprises a mounting seat (11), a gear mounting cavity (12), and a stator-rotor mounting cavity (13); a rotating shaft output hole (19) is provided on the mounting seat (11); the mounting seat (11) is coaxially arranged with the gear mounting cavity (12) and connected to one end of the gear mounting cavity (12); the other end of the gear mounting cavity (12) is coaxially arranged with the stator-rotor mounting cavity (13); and the cable hole (14) is provided on the outside of the stator-rotor mounting cavity (13).

5. The DC permanent magnet brushless motor for solar power generation and control according to claim 4, characterized in that: A rotating shaft positioning seat (16) is provided at the connection between the gear installation cavity (12) and the stator and rotor installation cavity (13), and a rotating shaft hole is provided at the central axis hole of the rotating shaft positioning seat (16).

6. The DC permanent magnet brushless motor for solar power generation and control according to claim 4, characterized in that: A screw mounting hole (15) is also provided on the outside of the stator and rotor mounting cavity (13), and the screw mounting hole (15) is located on the outer peripheral surface of the outer end of the stator and rotor mounting cavity (13).

7. The DC permanent magnet brushless motor for solar power generation and control according to claim 4, characterized in that: Screws (17) are respectively installed on the upper side and the lower side of the outer wall of the gear installation cavity (12), and the screws (17) are used to fix the gear transmission device and position it.

8. The DC permanent magnet brushless motor for solar power generation and control according to claim 4, characterized in that: The inner side surface of the mounting seat (11) is provided with a sealing groove (18), and a rubber ring is installed in the sealing groove (18).

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