A motor controller of a high-voltage motor and a high-voltage motor using the same

Abstract

The utility model discloses a high -voltage motor's motor controller and high -voltage motor of application thereof, high -voltage motor's motor controller, including control box, be equipped with cavity in control box, install power board and control panel in the cavity, control panel is welded with three pairs of power component and signal circuit element, power component is pasted in the bottom of cavity, power board is installed in the top of control panel, power board is welded with power circuit element, its power circuit element is arranged in the upside of power board, signal circuit element is arranged in the downside of control panel, and the insulating groove paper is installed between control panel and power board. Power circuit element and signal circuit element are distributed respectively two sides of power board and control panel, and the interval between power board and control panel is reduced, and the insulating groove paper can improve electrical clearance, satisfy higher insulation requirement, and increase the safety factor of motor controller.

Description

Technical Field

[0001] This utility model relates to a motor controller for a high-voltage motor and its application in high-voltage motors. Background Technology

[0002] For motor controllers used in high-voltage motors (>380VAC), including the control box and the circuit board inside, the circuit board has capacitors, transformers, and three sets of power components soldered on it. Higher requirements are placed on the creepage distance and clearance of the circuit board's circuitry. Due to the large size and number of electrical components on the circuit board, when using a single-piece circuit board, the outer diameter of the motor controller needs to be 172mm to meet the requirements. However, when using a double-layer circuit board, the circuit board is divided into a power board and a control board. The capacitors and transformers are located on the power board, while the power components and control circuitry are located on the control board. Since the components on both the power board and the control board are on the same side of the circuit board, the distance between the two boards is high, affecting the length of the motor body. Furthermore, using copper studs to connect the two boards makes production difficult and installation inconvenient. Utility Model Content

[0003] This invention provides a motor controller for a high-voltage motor, which solves the problem of excessive motor body length when using a double-layer circuit board in the existing high-voltage motor controller.

[0004] The technical solution of this utility model is implemented as follows:

[0005] The first objective of this utility model is to provide a motor controller for a high-voltage motor, comprising a control box with a cavity inside. A power board and a control board are installed inside the cavity. The control board has three pairs of power components and signal circuit components welded on it. The power components are attached to the bottom of the cavity. The power board is installed above the control board and has power circuit components welded on it. The power circuit components are arranged on the upper side of the power board, and the signal circuit components are arranged on the lower side of the control board. An insulating groove paper is installed between the control board and the power board.

[0006] The cavity described above has three mounting platforms at the bottom. Each mounting platform has a first screw hole. A fixing plate is installed above each pair of power components. A first screw is installed on the fixing plate. The tail of the first screw is screwed into the first screw hole. The fixing plate presses the power components onto the mounting platform through the first screw.

[0007] The cavity described above has several first mounting posts and several second mounting posts protruding from its sidewall. The top of the first mounting post is higher than the top of the second mounting post. Both the first and second mounting posts are provided with second screw holes. The power board is mounted on the first mounting post by a second screw, and the control board is mounted on the second mounting post by a third screw.

[0008] The power board and control board described above are electrically connected via jumpers.

[0009] The outer surface of the control box described above is provided with several heat dissipation fins.

[0010] The second objective of this utility model is to provide a high-voltage motor, including a motor body and a motor controller for the high-voltage motor, wherein the motor controller for the high-voltage motor is the motor controller for the high-voltage motor described above.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] 1. The motor controller for the high-voltage motor includes a control box with a cavity inside. A power board and a control board are installed within the cavity. Three pairs of power components and signal circuit components are soldered onto the control board. The power components are attached to the bottom of the cavity. The power board is mounted above the control board and has power circuit components soldered onto it. The power circuit components are arranged on the upper side of the power board, and the signal circuit components are arranged on the lower side of the control board. Insulating groove paper is installed between the control board and the power board. The power circuit components and signal circuit components are distributed on opposite sides of the power board and control board, reducing the distance between them. The insulating groove paper improves electrical clearance, meets higher insulation requirements, and increases the safety factor of the motor controller.

[0013] 2. Other advantages of this utility model are described in detail in the embodiments section. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of the motor controller for the high-voltage motor provided in Embodiment 1 of this utility model;

[0015] Figure 2 This is a top view of the motor controller for a high-voltage motor.

[0016] Figure 3 for Figure 2 AA section view;

[0017] Figure 4 This is an exploded view of the motor controller for a high-voltage motor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example 1:

[0020] like Figures 1 to 4 As shown, this embodiment provides a motor controller for a high-voltage motor, including a control box 1. The control box 1 has a cavity 10, and a power board 2 and a control board 3 are installed in the cavity 10. The control board 3 is soldered with three pairs of power components 34 and signal circuit components 30. The power components 34 are attached to the bottom of the cavity 10. The power board 2 is installed above the control board 3. The power board 2 is soldered with power circuit components 20, which include capacitors and transformers, etc. The power circuit components 20 are arranged on the upper side of the power board 2, and the signal circuit components 30 are arranged on the lower side of the control board 3. The solder joints of the power circuit components 20 are opposite to the solder joints of the signal circuit components 30. An insulating groove paper 4 is installed between the control board 3 and the power board 2.

[0021] The motor controller of the high-voltage motor has power circuit components 20 and signal circuit components 30 distributed on both sides of the power board 2 and the control board 3, respectively, which reduces the distance between the power board 2 and the control board 3. The insulating groove paper 4 can improve the electrical clearance, meet the higher insulation requirements, and increase the safety factor of the motor controller.

[0022] The cavity 10 described above has three mounting platforms 11 at its bottom. Each mounting platform 11 has a first screw hole 12. A fixing plate 31 is mounted above each pair of power components 34. A first screw 32 is mounted on the fixing plate 31, and the tail of the first screw 32 is screwed into the first screw hole 12. The fixing plate 31 presses the power component 34 onto the mounting platform 11 through the first screw 32. The fixing plate 31 makes the installation of the power component 34 more convenient and efficient.

[0023] The cavity 10 described above has several first mounting posts 13 and several second mounting posts 14 protruding from its sidewall. The top of the first mounting posts 13 is higher than the top of the second mounting posts 14. Both the first mounting posts 13 and the second mounting posts 14 are provided with second screw holes 15. The power board 2 is mounted on the first mounting posts 13 by second screws 22, and the control board 3 is mounted on the second mounting posts 14 by third screws 33. The control board 3 and the power board 2 are easy to install.

[0024] The power board 2 and the control board 3 are electrically connected via jumpers.

[0025] An insulating plate 5 is also installed between the bottom of the cavity 10 and the control plate 3.

[0026] The outer surface of the control box 1 described above is provided with several heat dissipation fins 16. The heat dissipation fins 16 facilitate heat dissipation.

[0027] Example 2:

[0028] The high-voltage motor includes a motor body and a high-voltage motor controller 100, wherein the high-voltage motor controller 100 is the same as the high-voltage motor controller described in Embodiment 1. By improving the structure of the high-voltage motor controller 100, the height of the high-voltage motor is reduced, and the safety of the high-voltage motor is increased. The motor body includes a stator assembly and a rotor assembly.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A motor controller for a high-voltage motor, comprising a control box (1), wherein the control box (1) has a cavity (10), a power board (2) and a control board (3) are installed in the cavity (10), the control board (3) is welded with three pairs of power components (34) and signal circuit components (30), the power components (34) are attached to the bottom of the cavity (10), the power board (2) is installed above the control board (3), and the power board (2) is welded with power circuit components (20), characterized in that: The power circuit element (20) is arranged on the upper side of the power board (2), the signal circuit element (30) is arranged on the lower side of the control board (3), and an insulating groove paper (4) is installed between the control board (3) and the power board (2); The cavity (10) has three mounting platforms (11) at its bottom. Each mounting platform (11) has a first screw hole (12). A fixing plate (31) is installed above each pair of power components (34). A first screw (32) is installed on the fixing plate (31). The tail of the first screw (32) is screwed into the first screw hole (12). The fixing plate (31) presses the power components (34) onto the mounting platform (11) through the first screw (32). The cavity (10) has several first mounting posts (13) and several second mounting posts (14) protruding from its sidewall. The top of the first mounting post (13) is higher than the top of the second mounting post (14). The first mounting post (13) and the second mounting post (14) are both provided with second screw holes (15). The power board (2) is mounted on the first mounting post (13) by the second screw (22), and the control board (3) is mounted on the second mounting post (14) by the third screw (33).

2. The motor controller for a high-voltage motor according to claim 1, characterized in that: The power board (2) and the control board (3) are electrically connected by jumpers.

3. The motor controller for a high-voltage motor according to claim 2, characterized in that: The outer surface of the control box (1) is provided with several heat dissipation fins (16).

4. A high-voltage motor, comprising a motor body and a motor controller (100) for the high-voltage motor, characterized in that: The motor controller (100) of the high-voltage motor is the motor controller of the high-voltage motor as described in any one of claims 1 to 3.

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