A heat sink for a power electronic converter

Abstract

The application relates to the technical field of power electronic converters, and discloses a heat dissipation device of a power electronic converter, which comprises a converter shell, a fan, an air outlet adjusting assembly, a temperature sensor and a controller; the converter shell is provided with a containing cavity for placing electronic components; the converter shell is provided with a heat dissipation opening and an air inlet opening which are communicated with the containing cavity; the fan is arranged on the outer side of the converter shell, and the blowing opening of the fan is communicated with the containing cavity through the air inlet opening; the air outlet adjusting assembly is arranged at the position where the heat dissipation opening is connected with the converter shell and is used for adjusting the opening degree of the heat dissipation opening; the temperature sensor is arranged in the containing cavity and is used for detecting the temperature and transmitting the temperature data to the controller; and the controller is electrically connected with the temperature sensor and the air outlet adjusting assembly and is used for controlling the air outlet adjusting assembly according to the temperature data. The heat dissipation device of the power electronic converter does not need to frequently switch the fan, can effectively maintain the internal temperature of the converter shell in a proper range, and prolongs the service life of the electronic components.

Description

Technical Field

[0001] This invention relates to the field of power electronic converter technology, and in particular to a heat dissipation device for power electronic converters. Background Technology

[0002] Power electronic converters typically house electronic components such as SiC devices within a casing. These components offer advantages such as high switching frequency, low conduction loss, and high temperature resistance. Their application in power electronic converters enables the development of converters towards higher power density, higher frequency, and smaller size. However, the centralized power modules generate a high heat density per unit volume. Once the operating junction temperature exceeds the safe limit, the performance of the electronic components will gradually degrade or even fail. Therefore, heat dissipation for the electronic components inside the converter is necessary.

[0003] Currently, the heat dissipation devices of existing power electronic converters use fans to blow air into the converter's interior to dissipate heat. The hot air is blown out of the converter along a fixed air duct. However, in order to prevent the internal temperature of the converter from getting too cold, the fan needs to be turned off when the internal temperature of the converter drops to a preset value, and the fan needs to be turned on again when the internal temperature of the converter rises. Frequent switching of the fan can easily damage it, and repeated sudden cooling and heating will aggravate the thermal fatigue of electronic components and shorten their service life. Summary of the Invention

[0004] The purpose of this invention is to provide a heat dissipation device for power electronic converters that can effectively maintain the internal temperature of the converter housing within a suitable range without the need for frequent switching of the fan, thereby extending the service life of electronic components.

[0005] To achieve the above objectives, the present invention provides a heat dissipation device for a power electronic converter, comprising: The converter housing has a cavity for holding electronic components, and the converter housing has a heat dissipation port and an air inlet communicating with the cavity; A fan is located outside the converter housing, and the air outlet of the fan is connected to the receiving cavity through the air inlet; An air outlet adjustment component is provided at the heat dissipation vent and connected to the converter housing, and is used to adjust the opening degree of the heat dissipation vent; A temperature sensor, located in the receiving cavity, is used to detect the temperature and transmit temperature data to the controller; A controller, electrically connected to the temperature sensor and the air outlet regulating component, is used to control the air outlet regulating component based on the temperature data.

[0006] Optionally, the air outlet regulating component includes: A baffle plate, the baffle plate being rotatably connected to the converter housing via a pivot extending in a first direction; A drive module is connected to the rotating shaft to drive the rotating shaft to rotate, and the drive module is electrically connected to the controller.

[0007] Optionally, multiple baffles are provided, and the multiple baffles are spaced apart along the second direction. The driving module includes: A connecting rod that extends along the second direction and is hinged to the plurality of the baffles; A transmission unit is connected to the connecting rod and is used to drive the connecting rod to move back and forth along the second direction. The transmission unit is electrically connected to the controller. The first direction and the second direction intersect each other perpendicularly.

[0008] Optionally, the transmission unit includes: A screw, which extends along the second direction and is mounted on the converter housing; An electric motor is connected to the screw to drive the screw to rotate, and the electric motor is electrically connected to the controller; A sliding element, wherein the sliding element is sleeved on the outer periphery of the screw; A hinge rod, the two ends of which are respectively hinged to the sliding member and the connecting rod.

[0009] Optionally, the converter housing is equipped with a pressure sensor. When the baffle rotates to a preset angle, the baffle abuts against the pressure sensor, and the pressure sensor is electrically connected to the controller.

[0010] Optionally, it also includes: An air outlet housing covers the outer side of the heat dissipation vent, the air outlet housing has an air outlet cavity communicating with the heat dissipation vent, and the air outlet housing has an air outlet communicating with the air outlet cavity; A filter cover is disposed on the outside of the air outlet and connected to the air outlet housing.

[0011] Optionally, the air inlet and the heat dissipation outlet are located on opposite sides of the converter housing in the third direction.

[0012] Optionally, a partition is installed inside the receiving cavity, the partition dividing the receiving cavity into a first partition cavity and a second partition cavity arranged sequentially along the second direction, and the partition is provided with a through hole connecting the first partition cavity and the second partition cavity; The second direction and the third direction intersect each other perpendicularly.

[0013] Optionally, two fans are provided, and the air outlets of the two fans are respectively connected to the first partition chamber and the second partition chamber.

[0014] Optionally, the height of the partition in the second direction is adjustable.

[0015] Compared with the prior art, the heat dissipation device for a power electronic converter according to an embodiment of the present invention has the following advantages: When the fan is started, the airflow enters the housing cavity from the air outlet and exits through the heat dissipation vent. The airflow carries the heat generated by the electronic components inside the housing cavity out through the heat dissipation vent. A temperature sensor inside the housing cavity monitors the temperature in real time and transmits the temperature data to the controller. The controller controls the airflow adjustment component based on the temperature data. The airflow adjustment component adjusts the opening of the heat dissipation vent, which changes the amount of hot air carried out from the housing cavity by the airflow, thus maintaining the internal temperature of the housing cavity within a suitable range.

[0016] This application eliminates the need for frequent switching of the fan. By dynamically adjusting the opening of the heat dissipation vents based on the internal temperature of the converter housing, it effectively maintains the internal temperature of the converter housing within a suitable range. This prevents repeated sudden cooling and heating of the internal temperature of the converter housing from affecting the performance of electronic components and extends the service life of the electronic components. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the heat dissipation device of the power electronic converter according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the heat dissipation device of the power electronic converter according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the partition and height adjuster described in an embodiment of the present invention; Figure 4 This is a schematic diagram of the height adjuster according to an embodiment of the present invention; Figure 5 This is an exploded view of the height adjuster described in an embodiment of the present invention; In the diagram, 1. Converter housing; 101. Receiving cavity; 1011. First partition cavity; 1012. Second partition cavity; 102. Heat dissipation vent; 103. Air inlet; 2. Fan; 3. Air outlet adjustment assembly; 4. Baffle; 5. Drive module; 51. Connecting rod; 52. Transmission unit; 521. Screw; 522. Motor; 523. Sliding component; 524. Hinge rod; 525. Guide component; 6. Temperature sensor; 7. Controller; 8. Pressure... 9. Sensor; 10. Air outlet housing; 11. Air outlet cavity; 12. Guide rail; 13. Filter cover; 14. Partition plate; 15. Through hole; 16. Fan housing; 17. Fan cavity; 18. Height adjuster; 19. Mounting component; 10. Clearance groove; 11. Second mounting hole; 12. Protective cover; 13. Mounting groove; 14. Support base; 15. First mounting hole; 16. Temperature indicator; 17. Hinge; 18. Cover. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] In the description of this invention, it should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this invention based on the specific circumstances.

[0020] In the description of this invention, it should be understood that the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," "longitudinal," "X-axis direction," "Y-axis direction," and "Z-axis direction," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Moreover, some of the above terms, in addition to indicating orientations or positional relationships, may also be used to indicate other meanings; for example, the term "upper" may in some cases be used to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0021] like Figures 1-2 As shown, a heat dissipation device for a power electronic converter according to an embodiment of the present invention includes a converter housing 1, a fan 2, an air outlet regulating component 3, a temperature sensor 6, and a controller 7. The converter housing 1 has a cavity 101 for housing electronic components. The converter housing 1 has a heat dissipation port 102 and an air inlet 103 that connect to the cavity 101. The fan 2 is located outside the converter housing 1, and the air outlet of the fan 2 is connected to the cavity 101 through the air inlet 103. The air outlet adjustment component 3 is located at the heat dissipation port 102 and connected to the converter housing 1, and is used to adjust the opening of the heat dissipation port 102. The temperature sensor 6 is located at the cavity 101 and is used to detect the temperature and transmit the temperature data to the controller 7. The controller 7 is electrically connected to the temperature sensor 6 and the air outlet adjustment component 3, and is used to control the air outlet adjustment component 3 according to the temperature data.

[0022] It should be noted that when the fan 2 is started, the airflow from the fan 2 enters the receiving cavity 101 through the air outlet and then exits through the heat dissipation outlet 102. The airflow carries the heat generated by the electronic components inside the receiving cavity 101 out of the receiving cavity 101 along the heat dissipation outlet. The temperature sensor 6 inside the receiving cavity 101 detects the temperature in real time and transmits the temperature data to the controller 7. The controller 7 controls the air outlet regulating component 3 based on the temperature data. The air outlet regulating component 3 adjusts the opening of the heat dissipation outlet 102, which can change the amount of hot air discharged from the receiving cavity 101 by the airflow, so that the internal temperature of the receiving cavity 101 is maintained within a suitable range.

[0023] This application eliminates the need for frequent switching of the fan 2. By dynamically adjusting the opening of the heat dissipation port 102 according to the internal temperature of the converter housing 1, the internal temperature of the converter housing 1 can be effectively maintained within a suitable range. This avoids repeated sudden cooling and heating of the internal temperature of the converter housing 1, which could affect the performance of electronic components and extend the service life of electronic components.

[0024] like Figures 1-2 As shown, the controller 7 is further electrically connected to the fan 2.

[0025] In this way, the controller 7 can control the speed of the fan 2 and adjust the air volume of the fan 2 according to the temperature data inside the converter, so as to avoid the waste of energy and the generation of large noise of the fan 2 under light load, and work together with the opening of the heat dissipation port 102 to maintain the internal temperature of the converter within a suitable range.

[0026] like Figures 1-2 As shown, in this embodiment, the air outlet regulating component 3 further includes a drive module 5 and a baffle 4: The baffle 4 is rotatably connected to the converter housing 1 via a rotating shaft extending along the first direction X; the drive module 5 is connected to the baffle 4 to drive the baffle 4 to rotate, and the drive module 5 is electrically connected to the controller 7.

[0027] It should be noted that the plane where the heat dissipation vent 102 is located is parallel to the first direction X. The drive module 5 can adjust the rotation angle of the baffle 4 to adjust the area of ​​the baffle 4 blocking the heat dissipation vent 102, thereby adjusting the amount of hot air discharged from the receiving cavity 101. The structure is simple and easy to maintain.

[0028] like Figures 1-2 As shown, in this embodiment, multiple baffles 4 are provided, and the multiple baffles 4 are spaced apart along the second direction Y. The drive module 5 includes a connecting rod 51 and a transmission unit 52: the connecting rod 51 extends along the second direction Y and is hinged to the multiple baffles 4; the transmission unit 52 is connected to the connecting rod 51 and is used to drive the connecting rod 51 to move back and forth along the second direction Y. The transmission unit 52 is electrically connected to the controller 7, wherein the first direction X and the second direction Y intersect each other perpendicularly.

[0029] It should be noted that the multiple baffles 4 are spaced apart along the second direction Y, allowing for segmented adjustment of the exhaust volume and enabling various states from completely closed baffles 4 to large-angle open baffles 4, thus providing more precise obstruction or guidance of airflow. The back-and-forth movement of the connecting rod 51 along the second direction Y can drive the multiple baffles 4 to rotate synchronously, adjusting the opening of the heat dissipation vent 102, resulting in higher operational efficiency and stronger structural stability.

[0030] like Figures 1-2 As shown, in this embodiment, the transmission unit 52 further includes a screw 521, a motor 522, a slider 523, and a hinge: The screw 521 extends along the second direction Y and is mounted on the converter housing 1; the motor 522 is connected to the screw 521 to drive the screw 521 to rotate, and the motor 522 is electrically connected to the controller 7; the sliding member 523 is sleeved on the outer periphery of the screw 521, and the two ends of the hinge rod 524 are respectively hinged to the sliding member 523 and the connecting rod 51.

[0031] It should be noted that the controller 7 controls the motor 522 to work. The motor 522 drives the screw 521, which extends along the second direction Y, to rotate. The sliding member 523 moves along the extension direction of the screw 521, thereby driving the connected hinge rod 524 to move and rotate. The hinge rod 524 drives the connecting rod 51 to move back and forth along the second direction Y. The angle at which the motor 522 drives the screw 521 to rotate can be precisely controlled, so the angle at which the baffle 4 rotates under the constraint of the connecting rod 51 is also more precise.

[0032] like Figures 1-2 As shown, in this embodiment, the converter housing 1 is further equipped with a pressure sensor 8. When the baffle 4 rotates to a preset angle, the baffle 4 abuts against the pressure sensor 8, and the pressure sensor 8 is electrically connected to the controller 7.

[0033] It should be noted that when the baffle 4 rotates to the preset angle, it abuts against the pressure sensor 8. The pressure sensor 8 serves to limit the movement of the baffle 4. After the pressure sensor 8 senses the pressure, it will transmit a signal to the controller 7. The controller 7 will control the drive module 5 to stop driving the baffle 4 to rotate.

[0034] like Figures 1-2 As shown, in this embodiment, it further includes an air outlet housing 9 and a filter cover 10: The air outlet housing 9 covers the outside of the heat dissipation port 102. The air outlet housing 9 is provided with an air outlet cavity 91 that communicates with the heat dissipation port 102. The air outlet housing 9 has an air outlet that communicates with the air outlet cavity 91. The filter cover 10 is located on the outside of the air outlet and is connected to the air outlet housing 9.

[0035] It should be noted that after the airflow exits from the heat dissipation vent 102, it enters the air outlet cavity 91 of the air outlet housing 9 and exits through the filter holes of the filter cover 10. Foreign objects such as debris from outside the device are blocked by the filter cover 10 and cannot enter the air outlet housing 9, thus preventing foreign objects from entering the receiving cavity 101 from the heat dissipation vent 102. Furthermore, the filter cover 10 can play a certain role in equalizing airflow, making the airflow smoother after passing through it.

[0036] The filter cover 10 is a plate-shaped object with mesh holes. One side of the filter cover 10 is connected to the air outlet housing 9 by a hinge 15. The filter cover 10 is preferably made of metal.

[0037] like Figure 2 As shown, further, the inner wall of the air outlet cavity 91 is provided with a guide rail 911 extending along the second direction Y, a screw 521 is provided in the air outlet cavity 91, one end of the screw 521 passes through the air outlet cavity 91 and connects to the motor 522, and a sliding member 523 is connected to a guide member 525, which is slidably connected to the guide rail 911.

[0038] Thus, the sliding of the guide member 525 along the guide rail 911 can further restrict the movement direction of the slider 523, and the slider 523 can move more stably along the second direction Y.

[0039] like Figure 2 As shown, in this embodiment, the air inlet 103 and the heat dissipation outlet 102 are further located on both sides of the converter housing 1 in the third direction Z.

[0040] In this way, the airflow from the blower 2 can flow along the blowing direction to the heat dissipation port 102, forming forced convection, which makes the heat dissipation and exhaust efficiency higher.

[0041] like Figures 1-2As shown, in this embodiment, a partition 11 is further installed in the receiving cavity 101. The partition 11 divides the receiving cavity 101 into a first partition cavity 1011 and a second partition cavity 1012 arranged sequentially along the second direction Y. The partition 11 has a through hole 111 connecting the first partition cavity 1011 and the second partition cavity 1012. The second direction Y and the third direction Z intersect each other perpendicularly.

[0042] In this way, the airflow blown out by the fan 2 will flow in two paths. One path flows to the heat dissipation port 102 to discharge the hot air, and the other path flows to the through hole 111 to circulate the airflow in the receiving cavity 101 and evenly distribute the temperature in all parts of the receiving cavity 101.

[0043] When the baffle 4, which is rotatably connected to the heat dissipation vent 102 and extends along the first direction X, is rotatably connected to the shaft, the first direction X, the second direction Y, and the third direction Z intersect each other perpendicularly.

[0044] like Figure 2 As shown, in this embodiment, there are two fans 2, and the air outlets of the two fans 2 are respectively connected to the first partition cavity 1011 and the second partition cavity 1012.

[0045] In this way, one fan 2 or two fans 2 can be selectively started to blow air into the first partition cavity 1011 and the second partition cavity 1012, so as to achieve precise partitioned heat dissipation and on-demand air volume distribution, and avoid local overheating in the receiving cavity 101.

[0046] When the blower 2 (hereinafter referred to as the second blower) connecting the air outlet to the second partition chamber 1012 is turned on and the blower 2 (hereinafter referred to as the first blower) connecting the air outlet to the first partition chamber 1011 is turned off, the air outlet regulating component 3 closes the heat dissipation port 102, the second blower blows air to the second partition chamber 1012, and the gas flows from the through hole 111 into the first partition chamber 1011 and then is discharged from the first blower into the receiving chamber 101; When the first fan and the second fan are turned on at the same time, the air outlet regulating component 3 opens the heat dissipation port 102, and the first fan and the second fan blow air into the first partition chamber 1011 and the second partition chamber 1012 at the same time. The gas is discharged from the heat dissipation port 102 into the receiving chamber 101.

[0047] like Figures 1-2 As shown, it further includes a fan housing 12, which is installed on the outside of the converter housing 1. The fan housing 12 is provided with a fan cavity 121 that connects to the receiving cavity 101. The fan housing 12 has an air inlet, and a filter cover 10 is installed in the air inlet. The fan 2 is located in the fan cavity 121.

[0048] In this way, the fan housing 12 can protect the fan 2, and the external space can enter the fan cavity 121 from the air inlet, while the filter cover 10 can prevent foreign objects from entering the fan cavity 121.

[0049] like Figure 1 As shown, it further includes a temperature indicator 14, which is electrically connected to the controller 7. The temperature indicator 14 can be a temperature display or a temperature indicator light, allowing staff to intuitively understand the temperature inside the receiving cavity 101.

[0050] like Figure 2 As shown, in this embodiment, the height of the partition 11 in the second direction Y is further adjustable.

[0051] Thus, by adjusting the height of the partition 11 in the second direction Y, the volume of the first partition cavity 1011 and the second partition cavity 1012 can be adjusted to meet the requirements for the arrangement of electronic components.

[0052] When there are two fans 2, the air outlets of the two fans 2 are respectively connected to the first partition cavity 1011 and the second partition cavity 1012. By adjusting the partition 11, the volume of the first partition cavity 1011 and the second partition cavity 1012 can be adjusted. In conjunction with adjusting the air volume of the two fans 2, the temperature of each part in the cavity 101 can be quickly and evenly contained.

[0053] like Figures 2-3 As shown, further, the converter housing 1 has an opening on one side along the first direction X, and a cover 16 is installed at the opening. The heat dissipation device of the power electronic converter also includes: a height adjuster 13, which extends along the second direction Y and is detachably disposed in the receiving cavity 101. The height adjuster 13 has a plurality of mounting slots 1321 spaced apart along the second direction Y. The mounting slots 1321 pass through the outer side of the height adjuster 13 on both sides along the first direction X. The partition 11 is embedded in the mounting slots 1321.

[0054] Thus, by embedding the partition 11 into different mounting slots 1321 provided along the second direction Y, the height of the partition 11 in the second direction Y can be adjusted.

[0055] First, install the height adjuster 13 on the inner wall of the receiving cavity 101. Open the cover 16 and insert the partition 11 into the receiving cavity 101 along the first direction X and embed it into the mounting groove 1321 of the height adjuster 13. Then close the cover 16. The opposite sides of the cover 16 are connected to the converter housing 1 by hinges and fasteners.

[0056] like Figures 2-3As shown, further, there are four height adjusters 13, which are located at the four corners of the receiving cavity 101 and installed on the cavity wall of the receiving cavity 101 along the third direction Z. The partition 11 is embedded in the mounting slot 1321 of the four height adjusters 13.

[0057] In this way, the four height adjusters 13 can support the partition 11 together, and the supporting force on the partition 11 is basically the same, making the position of the partition 11 more stable.

[0058] like Figures 3-5 As shown, the height adjuster 13 further includes a mounting piece 131, a protective cover 132, and a plurality of support bases 133; Mounting member 131 extends along the second direction Y and is detachably disposed within receiving cavity 101. Protective sleeve 132 is located on the side of mounting member 131 facing away from the cavity wall of receiving cavity 101 and is fitted over mounting member 131. Multiple mounting grooves 1321 are formed on the side of protective sleeve 132 facing away from mounting member 131. The mounting grooves 1321 extend through the outer surface of protective sleeve 132 on both sides along the first direction X. The bottom of the mounting grooves 1321 extends towards the side closer to mounting member 131 to form a protrusion. A clearance groove 1311 for accommodating the protrusion is formed on the side of mounting member 131 near protective sleeve 132. Multiple support seats 133 are installed on the side of protective sleeve 132 facing away from mounting member 131 and are located below the multiple mounting grooves 1321. The top surface of the support seat 133 and the side of the mounting groove 1321 near the support seat 133 are on the same plane. Thus, protective sleeve 132 can protect mounting member 131 and prevent it from being scratched. When the partition 11 is embedded in the mounting groove 1321, the top surface of the support base 133 can provide stable support for the partition 11.

[0059] like Figures 3-5 As shown, further, the support base 133, the protective sleeve 132 and the mounting component 131 are all provided with a first mounting hole 134 extending in the third direction Z. The fastener passes through the first mounting hole 134 of the support base 133, the protective sleeve 132 and the mounting component 131 in sequence, so as to stably connect the support base 133, the protective sleeve 132 and the mounting component 131.

[0060] like Figures 3-5 As shown, further, the mounting member 131 has second mounting holes 1312 extending along the third direction Z at both ends of the second direction Y. The second mounting holes 1312 allow the fixing member to pass through, so that the mounting member 131 is installed on the inner wall surface of the receiving cavity 101.

[0061] The working process of this invention is as follows: The fan 2 is started, and the airflow from the fan 2 enters the receiving cavity 101 from the air outlet and then exits through the heat dissipation outlet 102. The airflow carries the heat generated by the electronic components inside the receiving cavity 101 out of the receiving cavity 101 along the heat dissipation outlet. The temperature sensor 6 inside the receiving cavity 101 detects the temperature in real time and transmits the temperature data to the controller 7. The controller 7 controls the air outlet regulating component 3 according to the temperature data. The air outlet regulating component 3 adjusts the opening of the heat dissipation outlet 102, which can change the amount of hot air discharged from the receiving cavity 101 by the airflow, so that the internal temperature of the receiving cavity 101 is maintained within a suitable range.

[0062] This application eliminates the need for frequent switching of the fan 2. By dynamically adjusting the opening of the heat dissipation port 102 according to the internal temperature of the converter housing 1, the internal temperature of the converter housing 1 can be effectively maintained within a suitable range. This avoids repeated sudden cooling and heating of the internal temperature of the converter housing 1, which could affect the performance of electronic components and extend the service life of electronic components.

[0063] In summary, the embodiments of the present invention provide a heat dissipation device for a power electronic converter, which eliminates the need for frequent switching of the fan and effectively maintains the internal temperature of the converter housing within a suitable range, thereby extending the service life of electronic components.

[0064] The above description is only an optional embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A heat dissipation device for a power electronic converter, characterized in that, include: The converter housing has a cavity for holding electronic components, and the converter housing has a heat dissipation port and an air inlet communicating with the cavity; A fan is located outside the converter housing, and the air outlet of the fan is connected to the receiving cavity through the air inlet; An air outlet adjustment component is provided at the heat dissipation vent and connected to the converter housing, and is used to adjust the opening degree of the heat dissipation vent; A temperature sensor, located in the receiving cavity, is used to detect the temperature and transmit temperature data to the controller; A controller, electrically connected to the temperature sensor and the air outlet regulating component, is used to control the air outlet regulating component based on the temperature data.

2. The heat dissipation device for the power electronic converter according to claim 1, characterized in that, The air outlet regulating component includes: A baffle plate, the baffle plate being rotatably connected to the converter housing via a pivot extending in a first direction; A drive module is connected to the baffle to drive the baffle to rotate, and the drive module is electrically connected to the controller.

3. The heat dissipation device for the power electronic converter according to claim 2, characterized in that, The baffles are provided in multiple manner, and the multiple baffles are spaced apart along the second direction. The driving module includes: A connecting rod that extends along the second direction and is hinged to the plurality of the baffles; A transmission unit is connected to the connecting rod and is used to drive the connecting rod to move back and forth along the second direction. The transmission unit is electrically connected to the controller. The first direction and the second direction intersect each other perpendicularly.

4. The heat dissipation device for the power electronic converter according to claim 3, characterized in that, The transmission unit includes: A screw, which extends along the second direction and is mounted on the converter housing; An electric motor is connected to the screw to drive the screw to rotate, and the electric motor is electrically connected to the controller; A sliding element, wherein the sliding element is sleeved on the outer periphery of the screw; A hinge rod, the two ends of which are respectively hinged to the sliding member and the connecting rod.

5. The heat dissipation device for the power electronic converter according to claim 2, characterized in that, The converter housing is equipped with a pressure sensor. When the baffle rotates to a preset angle, the baffle abuts against the pressure sensor, and the pressure sensor is electrically connected to the controller.

6. The heat dissipation device for the power electronic converter according to claim 1, characterized in that, Also includes: An air outlet housing covers the outer side of the heat dissipation vent, the air outlet housing has an air outlet cavity communicating with the heat dissipation vent, and the air outlet housing has an air outlet communicating with the air outlet cavity; A filter cover is disposed on the outside of the air outlet and connected to the air outlet housing.

7. The heat dissipation device for the power electronic converter according to claim 1, characterized in that, The air inlet and the heat dissipation outlet are located on opposite sides of the converter housing in the third direction.

8. The heat dissipation device for a power electronic converter according to claim 7, characterized in that, A partition is installed inside the receiving cavity, which divides the receiving cavity into a first partition cavity and a second partition cavity arranged sequentially along the second direction. The partition cavity has a through hole that connects the first partition cavity and the second partition cavity. The second direction and the third direction intersect each other perpendicularly.

9. The heat dissipation device for a power electronic converter according to claim 8, characterized in that, The fan is provided in two parts, and the air outlets of the two fans are respectively connected to the first partition chamber and the second partition chamber.

10. The heat dissipation device for a power electronic converter according to claim 8, characterized in that, The height of the partition is adjustable in the second direction.

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