Integrally-driven self-heat-dissipation permanent magnet motor

Abstract

The utility model discloses an integrally-driven self-heat-dissipation permanent magnet motor, which comprises a motor main body and a heat dissipation unit, the heat dissipation unit comprises a control system carrier and a fan cover, the control system carrier covers the upper end face of the motor main body, an auxiliary fan is arranged at the tail part of the motor main body, and the fan cover is arranged on the upper end face of the motor main body. According to the integrally-driven self-heat-dissipation permanent magnet motor, the output shaft of the motor main body extends to the tail end of the motor main body in the direction opposite to the output end and is connected with the auxiliary fan, so that the output end of the motor main body is connected with the control system carrier, and the fan cover is fixedly connected with the control system carrier and is buckled at the tail part of the motor main body. The auxiliary fan rotates together when the motor runs, so that the air flowing speed in the heat dissipation unit is increased, and the cooling effect on the control circuit is achieved under the condition that additional external equipment does not need to be additionally arranged.

Description

Technical Field

[0001] The utility model belongs to the technical field of permanent magnet synchronous motors, and in particular relates to an integrally driven self-heating permanent magnet motor. Background Art

[0002] The commonly used motors at present are brushless DC motors, permanent magnet synchronous motors, squirrel cage asynchronous motors, switched reluctance motors, etc.;

[0003] Among them, the integrated drive permanent magnet synchronous motor has high power density, high power factor, high efficiency, large starting torque, low noise and can control and adjust the operating power as needed. It is widely used in coal mines, new energy vehicles, generators, air conditioners, vacuum pumps, coal mining machine cutting parts and other places;

[0004] Since the power density of the permanent magnet synchronous motor with integrated motor drive is high, the motor and the control system are in the same inner cavity, and the motor winding and the control system will generate a lot of heat during operation, so the permanent magnet synchronous motor is generally used in an external air cooling environment to ensure the normal operation of the permanent magnet synchronous motor;

[0005] In the fields of pumps, centrifugal fans, compressors, etc., the permanent magnet synchronous motor with integrated motor drive will not generate airflow around the product to help cool the motor during operation due to the limitations of the application environment, which will cause the motor to overheat, be damaged or even stop, affecting the service life and working quality of the motor.

[0006] In order to prevent overheating, the conventional method is to reduce the operating power of the permanent magnet synchronous motor or use additional heat dissipation equipment. This method not only increases the cost, but also limits the installation environment of the permanent magnet synchronous motor, thereby affecting the scope of use of the permanent magnet synchronous motor.

[0007] Therefore, a solution is needed to solve the above problems.

[0008] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility Model Content

[0009] In order to solve the above problems, the purpose of the utility model is to provide an integrated self-heating permanent magnet motor that utilizes the operation of a permanent magnet motor to drive an auxiliary fan to rotate, thereby solving the heat dissipation problem of an integrated drive control part.

[0010] To achieve the above-mentioned purpose, the utility model proposes an integrated driven self-heating permanent magnet motor, characterized in that it includes a motor body and a heat dissipation unit, the heat dissipation unit includes a control system carrier and a wind hood, the control system carrier cover is arranged on the upper end surface of the motor body, an auxiliary fan is arranged at the tail of the motor body, and the wind hood is fixedly connected to the control system carrier and buckled at the tail of the motor body.

[0011] In one example, the control system carrier includes an upper cover, a chip carrier and a shell, the upper cover is buckled on the shell, the chip carrier is fixed in the shell, the shell is L-shaped, and the shell is fixed on the top of the motor body. The lead wires for controlling the operation of the motor pass through the top of the motor body and extend into the shell to connect to the chip carrier.

[0012] In one example, a plurality of heat dissipation ribs are provided on the top of the upper cover.

[0013] In one example, a plurality of heat sinks are connected to the lower end surface of the chip carrier.

[0014] In one example, a wire hole is opened on the side of the shell.

[0015] In one example, a plug is movably embedded in the lead hole.

[0016] In one example, a sealing gasket is provided between the upper cover and the shell.

[0017] In one example, an air hole is provided on the air cover at a position corresponding to the auxiliary fan.

[0018] The self-heating permanent magnet motor with integrated drive proposed by the utility model can bring the following beneficial effects:

[0019] 1. By extending the output shaft of the motor body to the rear end of the motor body in the opposite direction of the output end and connecting the auxiliary fan, the auxiliary fan can rotate together when the motor is running, thereby accelerating the air flow speed in the heat dissipation unit, and achieving the cooling effect on the control circuit without adding additional external equipment;

[0020] 2. The auxiliary fan is rotated by the operation of the motor body itself. When the motor body operates at high power, the auxiliary fan obtains the same speed, thereby automatically adjusting the heat dissipation intensity of the heat dissipation unit according to the motor operating power;

[0021] 3. The lead hole is set on the side of the shell. When in use, just pull out the plug. The gap between the lead hole and the line can be used as an additional heat dissipation channel in the shell to improve the heat dissipation capacity of the heat dissipation unit. When not in use, insert the plug to block the lead hole to prevent dust or water vapor from entering the heat dissipation unit and ensure the sealing of the heat dissipation unit.

[0022] 4. The heat dissipation ribs arranged on the top of the upper cover and the heat sink arranged on the lower end surface of the chip carrier can improve the efficiency of the heat dissipation unit transferring heat to the air, thereby improving the heat dissipation efficiency of the heat dissipation unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 It is a three-dimensional structural schematic diagram of an integrated driven self-heating permanent magnet motor of the utility model.

[0025] Figure 2 It is a rear view of an integrated driven self-heating permanent magnet motor of the utility model.

[0026] Figure 3 It is a side view of an integrally driven self-heating permanent magnet motor of the utility model.

[0027] Figure 4 It is a side sectional view of an integrally driven self-heating permanent magnet motor of the utility model.

[0028] Figure 5 It is an exploded view of an integrated driven self-heating permanent magnet motor of the utility model.

[0029] Figure 6 It is a schematic diagram of the structure of the heat dissipation unit and the wind cover of the utility model when viewed from above.

[0030] Figure 7 It is a schematic structural diagram of the chip carrier of the utility model. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0032] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description of reference terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more schemes or examples.

[0036] like Figure 1 to Figure 7As shown, an embodiment of the utility model proposes an integrated driven self-heating permanent magnet motor, characterized in that it includes a motor body 1 and a heat dissipation unit 2, the heat dissipation unit 2 includes a control system carrier 3 and a wind cover 4, the control system carrier 3 is covered on the upper end surface of the motor body 1, an auxiliary fan 11 is arranged at the tail of the motor body 1, and the wind cover 4 is fixedly connected to the control system carrier 3 and buckled at the tail of the motor body 1.

[0037] The auxiliary fan 11 shares the same output shaft 5 with the output end of the motor body 1. When the motor body 1 is running at high power, the auxiliary fan 11 also rotates at high speed, thereby achieving rapid heat dissipation under high-intensity operation of the motor body 1. When the motor body 1 is running at low power, the rotation speed of the auxiliary fan 11 is consistent with that of the motor body 1, thereby completing the heat dissipation work.

[0038] Specifically, the control system carrier 3 includes an upper cover 31, a chip carrier 32 and a shell 33. The upper cover 31 is buckled on the shell 33, and the chip carrier 32 is fixed in the shell 33. The shell 33 is L-shaped and fixed on the top of the motor body 1. The lead wires for controlling the operation of the motor pass through the top of the motor body 1 and extend into the shell 33 to connect to the chip carrier 32.

[0039] The chip is embedded in the chip carrier 32.

[0040] Specifically, a plurality of heat dissipation ribs 311 are formed on the top of the upper cover 31 .

[0041] Specifically, a plurality of heat sinks 321 are connected to the lower end surface of the chip carrier 32 .

[0042] Specifically, a lead hole 331 is opened on the side of the shell 33, which is used to facilitate the line to be led out when the lead wire in the motor body 1 needs to be passed out, thereby increasing the overall aesthetics of the motor, facilitating the arrangement of the line, and improving the efficiency of troubleshooting and maintenance.

[0043] Specifically, a plug 332 is movably embedded in the lead hole 331 to block the lead hole 331 when no wire is needed, thereby preventing dust or water vapor from entering the heat dissipation unit 2 and causing chip damage, thereby ensuring the sealing of the heat dissipation unit 2.

[0044] Specifically, a sealing gasket 34 is provided between the upper cover 31 and the shell 33 to further improve the waterproofness and sealing performance of the heat dissipation unit 2 .

[0045] Specifically, an air hole 41 is opened on the air cover 4 at a position corresponding to the auxiliary fan 11 to increase the flow speed of wind in the heat dissipation unit 2 to improve the heat dissipation capacity of the heat dissipation unit 2.

[0046] Working principle: As the motor body runs, the auxiliary fan arranged at the extended end of the output shaft is driven to rotate together, accelerating the air flow speed at the rear end of the motor body, so that the heat is discharged from the wind holes on the wind cover, and the heat generated by the control system is accelerated to be released in the shell through the heat sink. Since the wind cover is connected to the shell, the internal space is interconnected, so that the heat is discharged from the rear wind cover of the motor body, thereby improving the heat dissipation efficiency. The heat dissipation ribs on the upper cover can also accelerate the transfer of heat from the inside of the heat dissipation unit to the external air, thereby enhancing the heat dissipation effect. Since the auxiliary fan is arranged at the extended end of the output shaft, the speed of the auxiliary fan will change with the output power of the motor body, so that when the motor body is running at high power, the auxiliary fan also rotates at high speed, thereby realizing rapid heat dissipation under high-intensity operation of the motor body, and when the motor body is running at low power, the speed of the auxiliary fan becomes relatively low, thereby achieving the purpose of adjusting the heat dissipation intensity according to the operating intensity of the motor body.

[0047] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0048] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An integrated self-heating permanent magnet motor, characterized in that: It includes a motor body and a heat dissipation unit, wherein the heat dissipation unit includes a control system carrier and a wind hood, wherein the control system carrier is covered on the upper end surface of the motor body, an auxiliary fan is arranged at the tail of the motor body, and the wind hood is fixedly connected to the control system carrier and buckled at the tail of the motor body.

2. The self-heating permanent magnet motor with integrated drive according to claim 1, characterized in that: The control system carrier includes an upper cover, a chip carrier and a shell, wherein the upper cover is buckled on the shell, and the chip carrier is fixed in the shell. The shell is L-shaped and fixed on the top of the motor body. The lead wires for controlling the operation of the motor pass through the top of the motor body and extend into the shell to connect to the chip carrier.

3. The self-heating permanent magnet motor with integrated drive according to claim 2, characterized in that: A plurality of heat dissipation ribs are arranged on the top of the upper cover.

4. The self-heating permanent magnet motor with integrated drive according to claim 2, characterized in that: The lower end surface of the chip carrier is connected to a plurality of heat sinks.

5. The self-heating permanent magnet motor with integrated drive according to claim 2, characterized in that: A lead hole is provided on the side of the shell.

6. The self-heating permanent magnet motor with integrated drive according to claim 5, characterized in that: A plug is movably embedded in the lead-in hole.

7. The self-heating permanent magnet motor with integrated drive according to claim 2, characterized in that: A sealing gasket is arranged between the upper cover and the shell.

8. The self-heating permanent magnet motor with integrated drive according to claim 1, characterized in that: The wind cover is provided with an air hole at a position corresponding to the auxiliary fan.

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