CN112688488A - Motor heat radiation structure - Google Patents
Motor heat radiation structure Download PDFInfo
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- CN112688488A CN112688488A CN202011620031.9A CN202011620031A CN112688488A CN 112688488 A CN112688488 A CN 112688488A CN 202011620031 A CN202011620031 A CN 202011620031A CN 112688488 A CN112688488 A CN 112688488A
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- heat
- bearing
- motor
- radiator
- substrate
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Abstract
The application discloses a motor heat dissipation structure, which comprises a shell, a protective cover, a radiator, a rotating shaft and a substrate, wherein the shell and the protective cover are respectively arranged at two ends of the radiator; the heat on the substrate is transferred to the radiator, and the radiator transfers the heat to the rotating shaft and the shell. The invention has the following beneficial effects: the aluminum shell improves the heat dissipation speed, avoids overhigh temperature of the radiator and ensures the use efficiency.
Description
Technical Field
The invention relates to the field of electric equipment, in particular to a motor heat dissipation structure.
Background
The existing electromechanical integrated motor (namely, an electric motor) comprises a shell and a radiator, wherein the radiator is made of iron, the shell is made of iron, an aluminum radiator and the iron shell are integrally assembled together during assembly, a substrate is arranged in the shell, and the substrate in the shell transmits heat to a turbine box through a heat radiating material, the radiator and the shell to form a whole heat radiating system.
The problems of the electromechanical integrated motor as described above are: the casing material is iron, and the coefficient of heat conductivity of iron is very low, and the base plate can give off a large amount of heat in practical application, and the heat that gives off is too much like in the short time, and the iron casing can't satisfy thermal transmission, can lead to the base plate overheated and damage, influences the performance of the use of motor.
Disclosure of Invention
The invention provides a motor heat radiation structure aiming at the problems.
The technical scheme adopted by the invention is as follows:
a motor heat dissipation structure comprises a shell, a protective cover, a radiator, a rotating shaft and a substrate, wherein the shell and the protective cover are respectively arranged at two ends of the radiator; the heat on the substrate is transferred to the radiator, and the radiator transfers the heat to the rotating shaft and the shell.
The heat dissipation mechanism has the advantages that the heat dissipation speed is improved through the aluminum shell, the overhigh temperature of the radiator is avoided, the use efficiency is guaranteed, the heat dissipation area is increased through the heat dissipation path of the radiator, the rotating shaft and the shell, the heat dissipation speed is accelerated, and the heat dissipation efficiency is higher.
The partial gap between the radiator and the protective cover can enable the gas to have convection, and the heat transfer on the radiator to the shell is accelerated.
A control part and a driving part (both are electronic elements) are arranged on the specific substrate, and the control part is used for outputting a driving signal of the driving quantity of the motor; a driving part for supplying a current supplied from an external power source to the motor according to the driving signal output from the control part; the heat generated by the driving part is conducted to the radiator on the upper part of the motor through the metal through holes distributed on the circuit substrate and the heat conducting materials filled in the holes, and then the radiator transmits the heat to the rotating shaft and the shell.
The hole on the specific substrate is welded with a metal terminal, and the metal terminal is a three-phase line outgoing line.
Optionally, the housing includes a first cylinder and a second cylinder, the first cylinder and the second cylinder are integrally formed, the heat sink is in contact with the first cylinder, and the roughness of the inner wall of the first cylinder is lower than ra 2.0.
Because the higher the roughness, the more unstable heat transfer is, the roughness of the inner wall of the first cylinder part is lower than Ra2.0, and particularly, the roughness of the outer walls of the first cylinder part and the second cylinder part is also lower than Ra2.0, so that the surface roughness of two contact surfaces of the radiator and the motor shell, and the motor shell and the turbine box can be ensured within Ra2.0, and the high-efficiency heat transfer is ensured.
Optionally, the device further comprises a first bearing and a second bearing, wherein the first bearing and the second bearing are respectively sleeved at two ends of the rotating shaft.
Optionally, the heat sink is provided with a first bearing holding portion, the housing is provided with a second bearing holding portion, the first bearing is mounted on the heat sink through the first bearing holding portion, and the second bearing is mounted on the housing through the second bearing holding portion.
The first bearing and the second bearing are used for increasing the rotation stability of the rotating shaft, and the first bearing holding portion and the second bearing holding portion are used for ensuring the mounting stability of the first bearing and the second bearing.
Optionally, a sensor magnet is mounted on the rotating shaft, and a rotation sensor is mounted on the substrate.
The sensor magnet and the rotation sensor are used for sensing the rotation of the rotating shaft.
Optionally, a heat sink substance layer is filled between the heat sink and the substrate.
The effect on specific heat dissipation substance layer is to improve the radiating rate of base plate, because the existence on heat dissipation substance layer has increased the heat exchange area between base plate and the radiator, and the heat can be transmitted to the radiator more fast on the base plate on, so holistic heat dissipation route as follows: the heat generated by the driving part is conducted to the heat sink on the upper part of the motor through the metal through holes (and the heat conduction material filled in the holes) distributed on the circuit substrate and the heat dissipation substance layer, and then the heat is transferred to the rotating shaft and the shell by the heat sink.
Optionally, a connector is connected to the substrate.
Electronic components are further mounted on the specific substrate and also play a role in core control, and the specific connector is welded and fixed with the substrate through connector pins.
Optionally, the housing is provided with a flange portion, a contact portion and a bottom portion.
The casing adopts aluminium system in this structure, and the coefficient of heat conductivity of aluminium is about 3 times of iron to first section of thick bamboo portion and the second section of thick bamboo portion of casing adopt the finish machining mode (roughness is within Ra2.0), when guaranteeing heat transfer to casing, the casing can be fine distribute away the heat, has guaranteed the performance of motor when using.
The invention has the beneficial effects that: the aluminum shell improves the heat dissipation speed, avoids overhigh temperature of the radiator and ensures the use efficiency.
Description of the drawings:
FIG. 1 is a schematic diagram of a heat dissipation structure of a motor;
fig. 2 is a schematic diagram of the structure of the housing.
The figures are numbered: 1. the sensor comprises a shell, 2, a protective cover, 5, a sensor magnet, 6, a heat radiator, 7, an electronic component, 8, a substrate, 9, a rotation sensor, 10, a connector, 11, a first bearing, 12, a second bearing, 13, a first barrel part, 14, a second barrel part, 15, a flange part, 16, a contact part, 17, a bottom part, 20, a second bearing holding part, 21, a rotating shaft, 27, a first bearing holding part, 33, a connector pin, 36, a metal terminal, 63 and a motor.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, a heat dissipation structure of a motor 63 includes a housing 1, a protective cover 2, a heat sink 6, a rotating shaft 8 and a substrate 21, wherein the housing 1 and the protective cover 2 are respectively installed at two ends of the heat sink 6, the substrate 21 is installed on the heat sink 6, the substrate 21 is located between the heat sink 6 and the protective cover 2, the rotating shaft 8 is installed on the housing 1, one end of the rotating shaft 21 is rotatably matched with the heat sink 6, and the housing 1 is made of aluminum; the heat on the substrate 8 is transferred to the heat sink 6, and the heat sink 6 transfers the heat to the shaft 21 and the housing 1.
The heat dissipation mechanism has the advantages that the heat dissipation speed is improved through the aluminum shell 1, the overhigh temperature of the radiator is avoided, and the use efficiency is ensured.
As shown in fig. 1 and 2, the heat sink device further includes a heat sink 6, the heat sink 6 is disposed on the housing, the substrate 8 is attached to the heat sink 6, the heat sink 6 is attached to the inner walls of the housing 1 and the protective cover 2, and a gap is formed between the heat sink 6 and the inner wall of the protective cover 2.
A control unit for outputting a drive signal of a drive amount of the motor 63 and a drive unit for driving the motor are provided on the substrate 8; the driving part functions to supply a current supplied from an external power source to the motor 63 according to a driving signal output from the control part; the heat generated by the driving unit is conducted to the heat sink 6 above the motor 63 through the metal through holes distributed on the circuit board 8 and the heat conductive material filled in the holes. The heat sink 6 transfers heat to the housing 1 and the shaft 21.
A metal terminal 36 is welded on a hole of the substrate 8, and the metal terminal 36 is a three-phase line outgoing line.
As shown in fig. 1 and 2, the housing 1 includes a first tube 13 and a second tube 14, the first tube 13 and the second tube 14 are integrally molded, the heat sink 6 is in contact with the first tube 13, and the roughness of the inner wall of the first tube 13 is lower than ra 2.0.
Since the higher the roughness, the more unstable the heat transfer, the roughness of the inner wall of the first cylindrical part 13 is set to be less than Ra2.0, and specifically, the roughness of the outer walls of the first cylindrical part 13 and the second cylindrical part 14 is also set to be less than Ra2.0, so that the surface roughness of the two contact surfaces of the heat sink 6 and the motor 63 housing 1, and the motor 63 housing 1 and the turbine box can be ensured to be within Ra2.0, and the high-efficiency heat transfer can be ensured.
As shown in fig. 1 and 2, the device further includes a rotating shaft 21, and the rotating shaft 21 is mounted on the housing 1.
As shown in fig. 1 and fig. 2, the device further includes a first bearing 11 and a second bearing 12, wherein the first bearing 11 and the second bearing 12 are respectively sleeved at two ends of the rotating shaft 21.
As shown in fig. 1 and 2, the heat sink 6 is provided with a first bearing holding portion 27, the housing 1 is provided with a second bearing holding portion 20, the first bearing 11 is mounted on the heat sink 6 via the first bearing holding portion 27, and the second bearing 12 is mounted on the housing 1 via the second bearing holding portion 20.
The first bearing 11 and the second bearing 12 function to increase the rotational stability of the rotating shaft 21, and the first bearing holder 27 and the second bearing holder 20 function to ensure the stability of the installation of the first bearing 11 and the second bearing 12.
As shown in fig. 1 and 2, the sensor magnet 5 is attached to the rotating shaft 21, and the rotation sensor 9 is attached to the substrate 8.
The sensor magnet 5 and the rotation sensor 9 function to sense the rotation of the rotating shaft 21.
As shown in fig. 1 and 2, a heat-dissipating material layer (indicated by G in fig. 1) is filled between the heat sink 6 and the substrate 8. Similarly, J in fig. 1 represents the central axis of the entire motor.
As shown in fig. 1 and 2, a connector 10 is connected to the substrate 8.
The specific substrate 8 is also provided with an electronic component 7, the electronic component 7 also plays a role in core control, and the specific connector 10 is fixedly welded on the substrate through a connector pin 33.
As shown in fig. 1 and 2, the housing 1 is provided with a flange portion 15, a contact portion 16, and a bottom portion 17.
Casing 1 adopts aluminium among this structure, and the coefficient of heat conductivity of aluminium is about 3 times of iron to first section of thick bamboo 13 and the second section of thick bamboo 14 of casing 1 adopt the finish machining mode (surface roughness is within Ra2.0), when guaranteeing heat transfer to casing 1, casing 1 can be fine distribute away the heat, has guaranteed the performance of motor 63 when using.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (8)
1. A motor heat radiation structure comprises a shell, a protective cover, a radiator, a rotating shaft and a substrate, wherein the shell and the protective cover are respectively arranged at two ends of the radiator; the heat on the substrate is transferred to the radiator, and the radiator transfers the heat to the rotating shaft and the shell.
2. The motor heat dissipation structure of claim 1, wherein the housing includes a first cylindrical portion and a second cylindrical portion, the first cylindrical portion and the second cylindrical portion are integrally molded, the heat sink is in contact with the first cylindrical portion, and a roughness of an inner wall of the first cylindrical portion is lower than ra 2.0.
3. The heat dissipation structure of claim 1, further comprising a first bearing and a second bearing, wherein the first bearing and the second bearing are respectively sleeved at two ends of the rotating shaft.
4. The heat dissipating structure for a motor of claim 3, wherein the heat sink is provided with a first bearing holding portion, the housing is provided with a second bearing holding portion, the first bearing is mounted on the heat sink via the first bearing holding portion, and the second bearing is mounted on the housing via the second bearing holding portion.
5. The heat dissipating structure for a motor according to claim 1, wherein a sensor magnet is mounted on the shaft, and a rotation sensor is mounted on the base plate.
6. The motor heat dissipation structure of claim 1, wherein a heat dissipation substance layer is filled between the heat sink and the substrate.
7. The heat dissipating structure for a motor of claim 1, wherein a connector is attached to the substrate.
8. The heat dissipating structure for a motor of claim 1, wherein the housing is provided with a flange portion, a contact portion and a bottom portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011620031.9A CN112688488A (en) | 2020-12-30 | 2020-12-30 | Motor heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011620031.9A CN112688488A (en) | 2020-12-30 | 2020-12-30 | Motor heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112688488A true CN112688488A (en) | 2021-04-20 |
Family
ID=75453860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011620031.9A Pending CN112688488A (en) | 2020-12-30 | 2020-12-30 | Motor heat radiation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112688488A (en) |
-
2020
- 2020-12-30 CN CN202011620031.9A patent/CN112688488A/en active Pending
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