CN215735521U - Intelligent power module heat radiation structure - Google Patents
Intelligent power module heat radiation structure Download PDFInfo
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- CN215735521U CN215735521U CN202121781644.0U CN202121781644U CN215735521U CN 215735521 U CN215735521 U CN 215735521U CN 202121781644 U CN202121781644 U CN 202121781644U CN 215735521 U CN215735521 U CN 215735521U
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Abstract
The utility model provides an intelligent power module heat dissipation structure, and belongs to the technical field of heat dissipation. The radiating fin design is curved inclined plane in this structure, compares with perpendicular radiating fin, and there is the fan air current of certain flow direction angle can smooth-going to the driver bottom, can carry out the heat exchange with heating panel, radiating fin simultaneously to scatter the heat fast effectively. Meanwhile, the temperature sensor module is arranged to monitor the temperature of the intelligent power module, and the rotating speed of the cooling fan is adjusted in real time, so that the aim of controlling the temperature and reducing the power consumption is fulfilled. The intelligent power module has the characteristics of temperature monitoring, adjustable wind speed, high heat dissipation efficiency and the like, can greatly reduce the power consumption of the radiator, and effectively controls the temperature of the intelligent power module.
Description
Technical Field
The utility model relates to the technical field of heat dissipation, in particular to an intelligent power module heat dissipation structure.
Background
The intelligent power module integrates a power unit and a driving circuit, and is widely applied to various fields such as vehicle traction, antenna control, numerical control machine tools and the like. When the intelligent power module works, the intelligent power module continuously conducts on and off actions, so that high switching loss is generated, and the loss is converted and accumulated in a heat mode. Along with the development of the intelligent power module towards high voltage, large capacity and miniaturization, the heat productivity of the intelligent power module in unit volume is gradually increased, and the overheating of the intelligent power module becomes the primary cause of the fault of the intelligent power module. In order to ensure that the intelligent power module can work normally in a limited space, a proper heat dissipation device must be adopted to ensure that the dissipation power of the intelligent power module is less than the maximum allowable dissipation power. At present, the heat dissipation methods applied to the intelligent power module of the driver are mainly forced air cooling and water cooling.
The heat dissipation mode adopted at present has the following problems:
1. the air cooling heat dissipation efficiency is low, the energy consumption is large, and the cost is high;
2. the volume of the driver is increased by adding a heat dissipation structure;
3. and heat dissipation equipment such as a pump water channel and the like needs to be added for water cooling, so that the heat dissipation structure is complex and the power consumption is large.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a heat dissipation structure of an intelligent power module. The structure has better heat dissipation effect and is convenient to control.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
an intelligent power module heat radiation structure comprises an intelligent power module, a heat radiation fan, a bottom plate, a driver drive plate and a temperature sensor; the lower surface of the bottom plate is fixed with a heat dissipation plate, and the bottom of the heat dissipation plate is provided with a heat dissipation fan; the temperature sensor and the intelligent power module are both positioned on the upper surface of the bottom plate, and the temperature sensor is tightly attached to the intelligent power module; the bottom plate is also provided with a support stud for supporting a driver driving plate, and the driver driving plate is fixed at the top of the support stud;
the temperature sensor is electrically connected with the driver driving board, and the driver driving board is electrically connected with the cooling fan.
Furthermore, the heat dissipation plate is of a rotational symmetric structure and comprises a plurality of heat dissipation fins; the radiating fins are curved inclined planes and form a certain included angle with the bottom plate, and the included angle is smaller than 80 degrees.
Further, the heat radiation fan blows air upwards.
Further, when the temperature of the intelligent power module is 0-20 degrees, the cooling fan rotates at a low speed; when the temperature of the intelligent power module is 20-50 degrees, the cooling fan rotates at a medium speed; when the temperature of the intelligent power module is 50-100 degrees, the cooling fan rotates at a high speed.
The utility model adopts the technical scheme to produce the beneficial effects that:
1. the radiating fins in the intelligent power module radiating structure design are designed to be the curved inclined planes, and compared with the vertical radiating fins, the fan airflow with a certain flow direction angle can smoothly flow to the bottom of the driver without generating backflow, so that heat is quickly and effectively dispersed.
2. In the prior art, the side-mounted fan radiating airflow mainly realizes temperature control of the intelligent power module through heat exchange with the vertical radiating fins, and the radiating efficiency is low. The heat dissipation airflow can exchange heat with the heat dissipation fins and the heat dissipation fins simultaneously, so that the heat dissipation efficiency is improved.
3. The utility model is provided with a temperature sensor to monitor the temperature of the intelligent power module and report the temperature information to the driver control board. The driving board adjusts the rotating speed of the cooling fan in real time according to the temperature information, and the aim of controlling temperature and reducing power consumption is achieved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the heat dissipation fan in fig. 1.
Fig. 3 is a schematic diagram illustrating the rotational speed control of the cooling fan in fig. 1.
In the figure, 1, a driver control board; 2. an intelligent power module; 3. a heat sink; 4. a temperature sensor module; 5. fixing the stud; 6. a heat radiation fan; 7. and a chassis base plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
An intelligent power module heat radiation structure comprises an intelligent power module, a heat radiation fan, a bottom plate, a driver drive plate and a temperature sensor; the lower surface of the bottom plate is fixed with a heat dissipation plate, and the bottom of the heat dissipation plate is provided with a heat dissipation fan; the temperature sensor and the intelligent power module are both positioned on the upper surface of the bottom plate, and the temperature sensor is tightly attached to the intelligent power module; the bottom plate is also provided with a support stud for supporting a driver driving plate, and the driver driving plate is fixed at the top of the support stud;
the temperature sensor is electrically connected with the driver driving board, and the driver driving board is electrically connected with the cooling fan.
Furthermore, the heat dissipation plate is of a rotational symmetric structure and comprises a plurality of heat dissipation fins; the radiating fins are curved inclined planes and form a certain included angle with the bottom plate, and the included angle is smaller than 80 degrees.
Further, the heat radiation fan blows air upwards.
Further, when the temperature of the intelligent power module is 0-20 degrees, the cooling fan rotates at a low speed; when the temperature of the intelligent power module is 20-50 degrees, the cooling fan rotates at a medium speed; when the temperature of the intelligent power module is 50-100 degrees, the cooling fan rotates at a high speed.
The following is a more specific example:
referring to fig. 1 and 2, the intelligent power module heat dissipation device of the present invention includes a driver control board 1, an intelligent power module 2, a heat sink 3, a temperature sensor module 4, a fixing stud 5, a heat dissipation fan 6, and a chassis base 7. The driver control board 1 is installed above the intelligent power module, is connected with the intelligent power module through a contact pin, and is fixed on the bottom board through a support stud. The temperature sensor 4 is powered by the driver control board 1 and is installed in close proximity to the smart power module 2, and the temperature of the smart power module 2 is approximately obtained by measuring the temperature of the heat sink in the vicinity of the smart power module 2.
Referring to fig. 3, the driver control board 1 controls the rotation speed of the cooling fan 6 according to the information reported by the temperature sensor module 4, and in order to reduce the computation, the rotation speeds of the fans of the intelligent power module 2 at 0-20 ℃, 20-50 ℃ and 50-100 ℃ are respectively set, so as to achieve the purposes of controlling temperature and reducing power consumption.
In order to further improve the heat dissipation efficiency of the heat dissipation fan 6, on one hand, the heat dissipation fan 6 is arranged at the bottom of the heat dissipation fin 3 and is lifted and fixed by a stud, so that the airflow supply of the heat dissipation fan 6 is ensured; and on the other hand, the curved inclined plane radiating fins are arranged, so that the heat generated by the intelligent power module 2 can be smoothly taken away by the radiating airflow.
While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (2)
1. An intelligent power module heat radiation structure comprises an intelligent power module and a heat radiation fan, and is characterized by further comprising a bottom plate, a driver driving plate and a temperature sensor; the lower surface of the bottom plate is fixed with a heat dissipation plate, and the bottom of the heat dissipation plate is provided with a heat dissipation fan; the temperature sensor and the intelligent power module are both positioned on the upper surface of the bottom plate, and the temperature sensor is tightly attached to the intelligent power module; the bottom plate is also provided with a support stud for supporting a driver driving plate, and the driver driving plate is fixed at the top of the support stud;
the temperature sensor is electrically connected with the driver driving board, and the driver driving board is electrically connected with the cooling fan.
The heat dissipation plate is of a rotational symmetric structure and comprises a plurality of heat dissipation fins; the radiating fins are curved inclined planes, included angles are formed between the radiating fins and the bottom plate, and the included angles are smaller than 80 degrees.
2. The smart power module heat dissipation structure as recited in claim 1, wherein the heat dissipation fan blows air upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121781644.0U CN215735521U (en) | 2021-08-02 | 2021-08-02 | Intelligent power module heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121781644.0U CN215735521U (en) | 2021-08-02 | 2021-08-02 | Intelligent power module heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215735521U true CN215735521U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121781644.0U Active CN215735521U (en) | 2021-08-02 | 2021-08-02 | Intelligent power module heat radiation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215735521U (en) |
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2021
- 2021-08-02 CN CN202121781644.0U patent/CN215735521U/en active Active
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