Heat dissipation assembly and heat dissipation method of power supply module

Abstract

The invention relates to the technical field of power supply modules, and discloses a heat dissipation assembly and heat dissipation method of a power supply module, and the heat dissipation assembly comprises an air inlet mechanism, a cooling mechanism, a detection mechanism, and a heat dissipation channel containing a power supply module group. The air inlet mechanism, the cooling mechanism, the detection mechanism and the power supply module group are sequentially arranged in the heat dissipation channel along a first direction; the cooling mechanism comprises a liquid inlet pipe and a liquid outlet pipe which are sequentially arranged in the first direction, the liquid inlet pipe is communicated with the liquid output end of the air conditioner compressor, and the liquid outlet pipe is communicated with the liquid input end of the air conditioner compressor; the condenser further comprises a plurality of condensation pipes evenly distributed in the second direction, one end of each condensation pipe is communicated with the liquid inlet pipe, and the other end of each condensation pipe is communicated with the liquid outlet pipe. According to the heat dissipation assembly of the power module and the heat dissipation method, efficient heat dissipation can be achieved without changing the air inlet power (the rotating speed of a fan), energy consumption is reduced, and the conditions of high noise and high energy consumption are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power module, in particular to a heat dissipation assembly and heat dissipation method of power module. BACKGROUND

[0002] With the development of communication base station, data center, industrial automation and charging station charging pile application fields, high power density power module is increasingly widely used, and a large amount of heat is generated when such module works, and the heat dissipation performance is directly related to the stability, reliability and service life of the system, especially in high temperature or closed environment, and the high-efficiency and energy-saving heat dissipation scheme becomes the key requirement to ensure the long-term stable operation of the power module.

[0003] At present, the power module is often cooled by forced air cooling combined with liquid cooling, for example, liquid cooling coil or heat dissipation fin is arranged in the heat dissipation air duct, and the fan is used to drive the airflow to flow through the cooling surface to take away the heat, however, in order to achieve sufficient heat dissipation intensity, high-power fan is often needed to drive high-speed airflow, or the size of the heat sink is increased to provide sufficient heat exchange area, which directly leads to significant increase of system operation noise and energy consumption, and the increase of size is contrary to the development trend of equipment miniaturization and compactness, and the airflow organization efficiency of the existing liquid cooling heat dissipation structure (such as parallel straight pipe or simple fin) is not high, the contact path of the airflow and the cold source (such as cooling liquid pipe) is single, and the boundary layer is easy to produce, the thermal resistance of the boundary layer is large, which leads to the reduction of heat exchange efficiency, at the same time, when the power of the liquid cooling heat dissipation structure is high, the cooling is excessive, and when the power of the liquid cooling heat dissipation structure is low, the heat dissipation is insufficient, so the air inlet power (fan speed) is increased to compensate, but high noise and high energy consumption are caused, and high-efficiency heat dissipation cannot be realized without changing the air inlet power to avoid noise and energy consumption. SUMMARY

[0004] The purpose of the present application is to provide a heat dissipation assembly and heat dissipation method of power module, which can realize high-efficiency heat dissipation without changing the air inlet power (fan speed), reduce energy consumption, and avoid high noise and high energy consumption.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme: A heat dissipation assembly of power module is designed, which comprises an air inlet mechanism, a cooling mechanism, a detection mechanism and a heat dissipation channel containing a power module group; The air inlet mechanism, the cooling mechanism, the detection mechanism and the power module group are sequentially arranged in the heat dissipation channel along the first direction; The cooling mechanism comprises a liquid inlet pipe and a liquid outlet pipe arranged in sequence along a first direction, the liquid inlet pipe is communicated with a liquid output end of the air conditioner compressor, and the liquid outlet pipe is communicated with a liquid input end of the air conditioner compressor; the cooling mechanism further comprises a plurality of condensing pipes which are uniformly distributed along a second direction, one end of each of the condensing pipes is communicated with the liquid inlet pipe, and the other end of each of the condensing pipes is communicated with the liquid outlet pipe, a projection of a middle part of the condensing pipe along the second direction is bent in a direction away from the two ends, and projections of the two ends along the first direction do not coincide. The detection mechanism is used for detecting the temperature of the air after passing through the condensing pipe and adjusting the power of the air conditioner compressor.

[0006] Optionally, the condensing pipe comprises a first pipe part, a second pipe part and a connecting pipe part, the first pipe part and the second pipe part both extend along a third direction, and projections of the first pipe part and the second pipe part along the first direction do not coincide, one end of the first pipe part is communicated with the liquid inlet pipe, the other end of the first pipe part is communicated with one end of the connecting pipe part, one end of the second pipe part is communicated with the liquid outlet pipe, the other end of the second pipe part is communicated with the other end of the connecting pipe part, and the connecting pipe part is bent along the third direction and away from the second pipe part of the first pipe part.

[0007] Optionally, the cooling mechanism further comprises a plurality of heat dissipation fins which are uniformly distributed along the third direction, the heat dissipation fins are fixedly connected to outer surfaces of the first pipe part and the second pipe part, and the liquid inlet pipe and the liquid outlet pipe are located below the heat dissipation fins.

[0008] Optionally, the cooling mechanism further comprises an adjusting mechanism, the adjusting mechanism comprises a windward plate and an adjusting driving part, the windward plate is arranged between the cooling mechanism and the power module group, two ends of the windward plate are respectively a first end and a second end along the first direction, the second end is close to the power module group, and the second end is rotationally connected to an inner top wall of the heat dissipation channel, and a driving end of the adjusting driving part is connected to the windward plate, and is used for driving the first end of the windward plate to swing in the heat dissipation channel.

[0009] Optionally, the adjusting driving part comprises an electric telescopic rod, a transmission rod and a driving rod, a telescopic end of the electric telescopic rod is rotationally connected to one end of the transmission rod, the other end of the transmission rod is rotationally connected to one end of the driving rod, and the other end of the driving rod is fixedly connected to the second end of the windward plate.

[0010] Optionally, the power module group is divided into at least two power module areas, the windward plate is arranged between two adjacent power module areas, the power module area comprises a plurality of power module parts, and the number of the windward plates is one less than the number of the power module areas.

[0011] Optionally, the detection mechanism comprises a control module, a driver and a first detection unit, the first detection unit is used for detecting the temperature of the airflow after passing through the condenser pipe, the first detection unit is electrically connected with the input end of the control module, the output end of the control module is electrically connected with the input end of the driver, and the output end of the driver is electrically connected with the electric telescopic rod and the air conditioner compressor respectively, and the driver is used for controlling the length of the extension end of the electric telescopic rod and the power of the air conditioner compressor. The second detection unit is further included, the second detection unit is used for detecting the temperature of the power module area, and the output end of the second detection unit is connected with the input end of the control module.

[0012] Optionally, the heat dissipation main body further comprises a heat dissipation shell, the heat dissipation channel is arranged in the heat dissipation shell, the air inlet mechanism comprises an air inlet shell and an air inlet fan, the air inlet shell is detachably connected to one end of the heat dissipation shell through bolts and is located in the heat dissipation channel, the air inlet fan is arranged in the air inlet shell and is used for generating wind power to suck external air into the heat dissipation channel, the end of the heat dissipation shell away from the air inlet shell is detachably connected with an air outlet shell through bolts, the air outlet shell is provided with an air outlet fan, and the end faces of the air inlet shell and the air outlet shell are both provided with filter screens.

[0013] A heat dissipation method of a power module, which adopts the heat dissipation assembly of the power module as described above, comprises the following steps: S1, the air inlet fan is started at a preset rotating speed, external air is sucked into the heat dissipation channel and then passes through the condenser pipe and the heat dissipation fins, the first detection unit continuously samples the air temperature after passing through the condenser pipe and the heat dissipation fins and transmits the air temperature to the control module, when the air temperature exceeds a preset threshold value, the control module starts the air conditioner compressor and starts the air conditioner compressor at a preset power, so that the refrigerant flows through the liquid inlet pipe, the condenser pipe and the liquid outlet pipe, when the air passes through the condenser pipe for a preset time and the air temperature exceeds the preset threshold value, the power of the air conditioner compressor is increased by the control module, when the air temperature is lower than the preset threshold value, the air conditioner compressor is turned off; S2, the initial angle of the windward plate is set as 0°, the control module reads the area temperature T and the temperature rising rate V of each power module area output by the second detection unit in real time, calculates the weight of each power module area, calculates the target angle of the windward plate according to the absolute value of Wv, and controls the length of the electric telescopic rod extended or retracted by the driver to make the windward plate rotate to the target angle on the side with lower weight, wherein, if any power module area meets T>65℃ or V>0.3℃ / s, it is a overheating priority area, wherein, Wv is the weight difference of adjacent power module areas. S3, when each power module area meets T>65℃ or V>0.3℃ / s, the preset threshold value of the gas temperature is reduced to obtain a corrected threshold value, and the control module controls the air conditioner compressor according to the corrected threshold value.

[0014] Optionally, the target angle of the windward plate is min[58°, 15°×|Wv|].

[0015] The application provides a heat dissipation assembly and heat dissipation method of a power module, which have the following beneficial effects: The heat dissipation assembly and heat dissipation method of the power module force the airflow to contact and exchange heat with the two ends of the condensing pipe in sequence by arranging the two ends of the condensing pipe in a staggered manner, effectively prolonging the contact path and time of the airflow and the liquid (i.e., the cold source), increasing the effective heat exchange area, and forming two micro flow channels at the two ends of the condensing pipe arranged in the second direction. After the airflow accelerates and thins the boundary layer when flowing through the micro flow channel formed by the end of the first row of condensing pipes, the airflow directly impacts the end of the second row of condensing pipes arranged in a staggered manner behind, generating strong turbulence and vortex, further destroying the laminar boundary layer with high thermal resistance, greatly strengthening the turbulence degree and heat exchange coefficient of the airflow. At the same time, the uniform distribution of the two ends of the condensing pipe in the second direction itself forms a dense micro flow channel structure, which not only increases the contact area but also reduces the existence of the boundary layer, so that the cooling liquid can fully exchange heat with the airflow, fully absorb and carry away the heat of the airflow, greatly improve the utilization rate and heat exchange efficiency of the liquid, and achieve better cooling effect under the same air inlet power. With the detection mechanism, the cooling effect can be monitored in real time and the power of the air conditioner compressor can be adjusted, which significantly improves the heat dissipation efficiency and energy efficiency. In the case of not using the air conditioner compressor, the air conditioner compressor can be not used, further reducing the energy efficiency and thereby reducing the cost. In the case of not changing the power of the air inlet mechanism, the noise is reduced, and the heat dissipation effect of the power module group in the heat dissipation channel is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the installation structure of the heat dissipation assembly of the power module in the application. Figure 2 It is a schematic diagram of the installation structure of the heat dissipation assembly of the power module in the application. Figure 3 It is a schematic diagram of the installation structure of the heat dissipation assembly of the power module in the application. Figure 4 It is a schematic diagram of the installation structure of the heat dissipation assembly of the power module in the application.

[0017] In the figure: 10, air inlet mechanism; 11, air inlet shell; 12, air inlet fan; 20, cooling mechanism; 21, liquid inlet pipe; 22, liquid outlet pipe; 23, condenser pipe; 231, first pipe part; 232, second pipe part; 233, connecting pipe part; 24, heat dissipation fin; 40, heat dissipation main body; 41, heat dissipation channel; 42, heat dissipation shell; 43, air outlet shell; 44, air outlet fan; 50, power module group; 51, power module area; 60, adjusting mechanism; 61, windward plate; 62, adjusting driving part; 621, electric telescopic rod; 622, transmission rod; 623, driving rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Referring to Figures 1 to 4 The present application provides a technical solution: a heat dissipation assembly, specifically applied to a power module heat dissipation assembly in a charging pile, more specifically, applied to a high-power charging pile for charging a car, which can reduce wind noise and adjust and control power, save energy consumption, and reduce use cost.

[0020] Referring to Figures 1 to 4 The present application provides a technical solution: a heat dissipation assembly of a power module, comprising an air inlet mechanism 10, a cooling mechanism 20, a detection mechanism, and a heat dissipation channel 41 containing a power module group 50. The air inlet mechanism 10, the cooling mechanism 20, the detection mechanism, and the power module group 50 are sequentially arranged in the heat dissipation channel 41 along a first direction; The cooling mechanism 20 comprises a liquid inlet pipe 21 and a liquid outlet pipe 22 arranged in sequence along the first direction, the liquid inlet pipe 21 being in communication with a liquid output end of an air conditioner compressor, and the liquid outlet pipe 22 being in communication with a liquid input end of the air conditioner compressor; and further comprising a plurality of condenser pipes 23 uniformly distributed along a second direction, one end of each condenser pipe 23 being in communication with the liquid inlet pipe 21, and the other end being in communication with the liquid outlet pipe 22, a projection of the middle part of the condenser pipe 23 along the second direction being bent in a direction away from the two ends, and projections of the two ends along the first direction not coinciding; The detection mechanism is used for detecting the temperature of air after passing through the condenser pipe 23, and adjusting the power of the air conditioner compressor; After the air inlet mechanism 10 forcibly introduces the cooling airflow, the cooling airflow flows through the cooling mechanism 20 and the detection mechanism in the first direction in turn, and finally reaches the power module group 50. The inlet pipe 21-condensing pipe 23-outlet pipe 22 of the cooling mechanism 20 forms part of a closed-loop refrigeration circuit. The multiple bent condensing pipes 23 are uniformly arranged along the second direction. The heat exchange between the airflow and the liquid (i.e., the cold source, the refrigerant) is strengthened by increasing the contact area and the turbulence effect. The detection mechanism monitors the temperature of the airflow cooled by the condensing pipe 23 in real time, and dynamically adjusts the power of the air conditioner compressor to maintain the optimal refrigeration intensity. This not only ensures that the cooling capacity is evenly distributed to the entire heat dissipation channel 41, but also avoids overcooling or insufficient heat dissipation by real-time regulation. Ultimately, it ensures that the power module group 50 operates stably in a controllable temperature environment. By delivering the liquid (i.e., the cold source, the refrigerant) from bottom to top, i.e., from the air conditioner compressor-inlet pipe 21-condensing pipe 23-outlet pipe 22, the liquid flow difference of the multiple condensing pipes 23 can be reduced, and the flow rate of the liquid (i.e., the cold source, the refrigerant) entering the condensing pipe 23 from the inlet pipe 21 can be slowed down, further improving the liquid heat exchange rate. By uniformly distributing the multiple condensing pipes 23 along the second direction, and by bending the middle part of each condensing pipe 23 and not overlapping the projections of the two ends of each condensing pipe 23 in the first direction, the inlet pipe 21 sends the liquid output by the air conditioner compressor into the condensing pipe 23 and then sends it back to the air conditioner compressor through the outlet pipe 22. Combined with the staggered arrangement of the two ends of the condensing pipe 23, the airflow must contact and exchange heat with the two ends of the condensing pipe 23 in sequence, effectively prolonging the contact path and time of the airflow and the liquid (i.e., the cold source), increasing the effective heat exchange area, and forming two micro-flow channels at the two ends of the condensing pipe 23 uniformly distributed along the second direction. The staggered arrangement causes the airflow to accelerate and thin the boundary layer after flowing through the micro-flow channel formed by the end of the first row of condensing pipes 23, and then directly impacts the end of the second row of condensing pipes 23 arranged in the rear, generating strong turbulence and vortex, further destroying the laminar boundary layer with high thermal resistance, greatly enhancing the turbulence degree and heat exchange coefficient of the airflow. At the same time, the uniform distribution of the two ends of the condensing pipe 23 along the second direction itself forms a dense micro-flow channel structure, which not only increases the contact area but also reduces the existence of the boundary layer, enabling the cooling liquid to fully exchange heat with the airflow and fully absorb the heat of the airflow, greatly improving the utilization rate and heat exchange efficiency of the liquid. Under the same air inlet power, it can achieve better cooling effect. Combined with the detection mechanism, it can monitor the cooling effect in real time and adjust the power of the air conditioner compressor, significantly improving the heat dissipation efficiency and energy efficiency. In the case of not using the air conditioner compressor, the air conditioner compressor can be used, further reducing the energy efficiency, thereby reducing the cost. In the case of not changing the power of the air inlet mechanism 10, the noise is reduced, and the heat dissipation effect of the power module group 50 in the heat dissipation channel 41 is ensured.

[0021] In the embodiment, as a preferred solution, the condenser pipe 23 comprises a first pipe section 231, a second pipe section 232 and a connecting pipe section 233, the first pipe section 231 and the second pipe section 232 both extend along the third direction, and projections of the first pipe section 231 and the second pipe section 232 along the first direction do not coincide, one end of the first pipe section 231 communicates with the liquid inlet pipe 21, the other end communicates with one end of the connecting pipe section 233, one end of the second pipe section 232 communicates with the liquid outlet pipe 22, the other end communicates with the other end of the connecting pipe section 233, the connecting pipe section 233 bends along the third direction and away from the second pipe section 232 of the first pipe section 231, the relatively low-temperature liquid (i.e. the cold source, the refrigerant) is first arranged upstream of the airflow, and then transitions to the second pipe section 232 downstream of the airflow through the U-shaped upper-arch connecting pipe section 233, so that the liquid (i.e. the cold source, the refrigerant) temperature rise curve and the air cooling curve maintain the maximum logarithmic mean temperature difference, the first pipe section 231 and the second pipe section 232 are projected in the airflow direction (i.e. the first direction) and are misaligned, which can weaken the wake shadowing and excite secondary turbulence, improve the heat exchange efficiency and effect, the U-shaped bend not only leaves a passage for the airflow, but also buffers thermal expansion and contraction and facilitates the gravity return of the liquid (i.e. the cold source, the refrigerant), and is convenient for cleaning and maintenance and prolongs the welding life.

[0022] In the embodiment, as a preferred solution, the cooling mechanism 20 further comprises a plurality of heat dissipation fins 24 uniformly distributed along the third direction, the heat dissipation fins 24 are fixedly connected to the outer surfaces of the first pipe section 231 and the second pipe section 232, the liquid inlet pipe 21 and the liquid outlet pipe 22 are located below the heat dissipation fins 24, the heat dissipation fins 24 are uniformly arranged along the third direction and closely adhere to the outer walls of the first pipe section 231 and the second pipe section 232, forming a double-row staggered fin belt in the airflow, which is continuously broken and reattached when the air flows over, further enhancing the turbulence, at the same time, the heat dissipation fins 24 expand the heat transfer area, and the uniform arrangement of the heat dissipation fins 24 ensures the consistency of the airflow resistance and the temperature gradient in the axial direction, avoiding local overcooling or overheating, and the liquid inlet pipe 21 and the liquid outlet pipe 22 are designed below the fins, on the one hand, reducing the obstruction of the air duct formed by the main heat exchange area and avoiding the resulting thermal short circuit, on the other hand, using the temperature distribution of cold on top and hot on bottom to make the low-temperature liquid (i.e. the cold source, the refrigerant) contact the gas first, and the high-temperature refrigerant after warming away from the main airflow core, thereby maintaining the maximum average temperature difference, the lower liquid outlet pipe 22 facilitates the return flow of the liquid (i.e. the cold source, the refrigerant) under the action of gravity and reduces the wind vibration of the liquid inlet pipe 21 and the liquid outlet pipe 22, improves the overall reliability, reduces the resistance on the gas side, and improves the uniformity of heating and the heat exchange efficiency.

[0023] As a preferred solution in the embodiment, the adjusting mechanism 60 is further included, which comprises a windward plate 61 and an adjusting driving part 62. The windward plate 61 is arranged between the cooling mechanism 20 and the power module group 50, and both ends of the windward plate 61 are a first end and a second end in the first direction respectively, wherein the second end is close to the power module group 50 and is rotationally connected with the inner top wall of the heat dissipation channel 41. The driving end of the adjusting driving part 62 is connected with the windward plate 61, and is used to drive the first end of the windward plate 61 to swing in the heat dissipation channel 41. The windward plate 61 is located between the outlet of the cooling mechanism 20 and the inlet of the power module group 50, which is equivalent to inserting an adjustable gate flow blade between the airflow pre-cooled by the condenser pipe 23 and the heat source. The second end of the windward plate 61 is fixed to the top wall or the bottom wall of the heat dissipation channel 41 by a hinged manner, that is, the windward plate 61 is a vertical plate relative to the third direction and is a blocking plate relative to the second direction, so that the whole windward plate 61 can swing clockwise or counterclockwise around the top end axis. The adjusting driving part 62 is connected with the windward plate 61 to adjust the continuous angle of the windward plate 61. After swinging, the windward plate 61 changes the cross section of the heat dissipation channel 41 at different positions relative to the power module group 50. When the first end swings downward, the cross section of the channel is partially blocked, the local static pressure is increased, and the flow rate is increased, so that more air flow can be pushed to the power module group 50 on the open side of the windward plate 61. When the windward plate 61 swings back, the flow channel is widened again, and the air flow is balanced again among different parts of the power module group 50. Since the hinge point is close to the power module, the windward plate 61 only needs a small stroke to obtain a significant flow adjusting effect, which responds quickly and can avoid noise and vibration caused by high-speed rotating parts.

[0024] As a preferred solution in the embodiment, the adjusting driving part 62 comprises an electric telescopic rod 621, a transmission rod 622 and a driving rod 623. The telescopic end of the electric telescopic rod 621 is rotationally connected with one end of the transmission rod 622. The other end of the transmission rod 622 is rotationally connected with one end of the driving rod 623. The other end of the driving rod 623 is fixedly connected with the second end of the windward plate 61. By extending or retracting the telescopic end of the electric telescopic rod 621, a certain pushing force or pulling force can be generated on the transmission rod 622. By rotationally connecting the other end of the transmission rod 622 with the driving rod 623, the pushing force or the pulling force can be transmitted to the driving rod 623. By connecting the driving rod 623 with the windward plate 61, the pushing force or the pulling force can be transmitted to the windward plate 61, so that the windward plate 61 swings and flips. The rotationally connecting between the telescopic end of the electric telescopic rod 621 and the transmission rod 622, and the rotationally connecting between the transmission rod 622 and the driving rod 623, are used to compensate the physical motion interference when the telescopic end of the electric telescopic rod 621 extends or retracts to drive the windward plate 61 to reverse.

[0025] In this embodiment, as a preferred option, the power module group 50 is divided into at least two power module areas 51. A windward plate 61 is correspondingly disposed between two adjacent power module areas 51. Each power module area 51 includes multiple power module components. The number of windward plates 61 is one less than the number of power module areas 51. The power module group 50 can be understood as a single battery pack, which can be used for power output from charging piles, power input from wind power generation, or as an energy source for communication base stations and data centers. The battery pack (i.e., the power module group 50) is composed of multiple batteries arranged with a certain gap. In other words, the power module group 50 consists of multiple power module components arranged with a certain gap. The power module group 50 is arranged in a gap. When the power module group 50 is divided into zones, it can be understood that several power modules are divided into a power module area 51. A power module group 50 can be divided into two, three, or four zones. The number of air intake plates 61 is one less than that of the power module area 51. It can be understood that two adjacent power module areas 51 use one air intake plate 61 to adjust the air volume. By adjusting the air intake of different power module areas 51, the purpose is to control the power module group 50 in zones to avoid local overheating or overcooling, so that the power module group 50 can be used evenly. This avoids local overheating during concentrated heat dissipation, which would increase the power of the air conditioning compressor and cause some parts to be overcooled.

[0026] In this embodiment, as a preferred solution, the detection mechanism includes a control module, a driver, and a first detection unit. The first detection unit is used to detect the airflow temperature after passing through the condenser 23. The first detection unit is electrically connected to the input terminal of the control module, the output terminal of the control module is electrically connected to the input terminal of the driver, and the output terminal of the driver is electrically connected to the electric telescopic rod 621 and the air conditioning compressor, respectively. The driver is used to control the extension length of the telescopic end of the electric telescopic rod 621 and the power of the air conditioning compressor. It also includes a second detection unit, which is used to detect the temperature of the power module area 51, and the output terminal of the second detection unit is connected to the input terminal of the control module; The first detection unit is installed at the outlet of the condenser pipe 23, outputting a real-time pre-cooling airflow temperature signal. After receiving this signal, the control module can adjust the power of the air conditioning compressor by increasing or decreasing the power via the driver, first stabilizing the total intake air temperature entering the power module area 51 within the set range. At the same time, the second detection unit is distributed on the surface of each power module area 51 or detects the temperature of each power module area 51 through an infrared temperature sensor. When an infrared temperature sensor is selected, it is located between the power module group 50 and the cooling mechanism 20, continuously feeding back the local shell temperature. The control module compares these local temperatures with V and a threshold. If a certain area experiences heat... The driver sends a position adjustment command to the actuator, which then precisely controls the extension of the electric telescopic rod 621. This drives the transmission rod 622 and the drive rod 623 to rotate the windshield 61, dynamically adjusting the cross-section of the heat dissipation channel 41 and directing more airflow to the high-temperature area. By controlling the air conditioning compressor power through "airflow temperature control" and the angle of the windshield 61 through "local temperature difference control of the power module group 50", it not only ensures that all power module components always operate at a safe temperature, but also avoids the air conditioning compressor from being fully loaded for a long time and the frequent ineffective movement of the windshield 61, achieving intelligent heat dissipation control that is energy-saving, low-noise, efficient, uniform, and responsive.

[0027] In this embodiment, as a preferred option, it further includes a heat dissipation body 40, which includes a heat dissipation shell 42. A heat dissipation channel 41 is formed inside the heat dissipation shell 42. The air intake mechanism 10 includes an air intake shell 11 and an air intake fan 12. The air intake shell 11 is detachably connected to one end of the heat dissipation shell 42 by bolts and is located inside the heat dissipation channel 41. The air intake fan 12 is disposed inside the air intake shell 11 and is used to generate airflow to draw outside air into the heat dissipation channel 41. An air outlet shell 43 is detachably connected to the end of the heat dissipation shell 42 away from the air intake shell 11 by bolts. An air outlet fan 44 is disposed inside the air outlet shell 43. Filter screens are provided on the end faces of both the air intake shell 11 and the air outlet shell 43. The heat dissipation body 40 adopts a detachable box-type configuration of the heat dissipation shell 42, the air intake shell 11, and the air outlet shell 43. A straight heat dissipation channel 41 is formed inside the heat dissipation shell 42 along the axial direction (i.e., the first direction). The air intake shell 11 is detachably assembled to the inlet end of the channel by bolts, and the air intake fan 12 is completely surrounded. A negative pressure suction chamber is formed inside the air inlet housing 11, which can efficiently draw outside air into the heat dissipation channel 41 without exposing rotating parts. The air outlet housing 43, which is also connected by bolts at the outlet end of the channel, has a built-in fan 44 that forces the heat-carrying gas out through positive pressure exhaust, realizing a series air path of "front-end intake and end-end push". This ensures stable airflow direction, continuous pressure drop and low noise for the whole machine. The end faces of the air inlet housing 11 and the air outlet housing 43 are equipped with easily replaceable filters, which intercept solid particles and provide secondary protection for the intake and exhaust airflow. This prevents sand and dust from entering the condenser tube 23 fins and causing blockage, and also prevents internal dust from being discharged with the fan and polluting the environment. It can maintain the heat dissipation channel 41 sealed and the internal negative pressure distribution for a long time in high dust and high vibration environments, which significantly improves heat dissipation efficiency, overall reliability and ease of maintenance. The air conditioning compressor or condenser can also be understood as not being in a constantly open state, which can reduce operating costs. The air conditioning compressor can be the condenser.

[0028] The first direction does not refer to just one orientation; both orientations within the first direction are considered the first direction. That is, the first direction refers to the east-west orientation, so going east is also the first direction, and going west is also the first direction. The second direction does not refer to just one orientation; both orientations within the second direction are considered the second direction. That is, the second direction refers to the east-west orientation, so going east is also the second direction, and going west is also the second direction. The third direction does not refer to just one orientation; both orientations within the third direction are considered the third direction. That is, the third direction refers to the east-west orientation, so going east is also the third direction, and going west is also the third direction.

[0029] The present invention also provides a heat dissipation method for a power module, employing the heat dissipation component of the power module as described above, comprising: S1. Start the air intake fan at a preset speed to draw outside air into the heat dissipation channel, where it passes through the condenser and heat dissipation fins. The first detection unit continuously samples the air temperature after passing through the condenser and heat dissipation fins and transmits the data to the control module. When the air temperature exceeds a preset threshold, the control module starts the air conditioning compressor at a preset power, allowing the refrigerant to flow through the inlet pipe, condenser, and outlet pipe. After the air has passed through the condenser for a preset time and the air temperature exceeds the preset threshold, the control module increases the power of the air conditioning compressor. When the air temperature is below the preset threshold, the air conditioning compressor is turned off. The intake fan first establishes a stable airflow at a constant preset speed, drawing outdoor air into the heat dissipation channel and passing it sequentially over the condenser tube and heat dissipation fins to achieve the first round of passive heat exchange. The first detection unit collects the outlet air temperature of the pre-cooled air in real time and feeds it back to the control module, enabling the system to perform first-level closed-loop control based on the "gas temperature threshold". When the outlet air temperature exceeds the set threshold, the control module immediately starts the air conditioning compressor at a preset power, allowing the low-temperature refrigerant to enter the condenser network through the liquid inlet pipe and form forced convection with the airflow for further cooling. If the temperature is still too high after a preset working time, the compressor is instructed to gradually increase its power to increase the cooling capacity. Conversely, when the air temperature drops below the threshold, the compressor is turned off and switched back to pure air-cooling mode. By combining constant air volume with staged cooling, the system can ensure that the inlet air temperature of the power module group is quickly stabilized while avoiding frequent start-stop and long-term full load of the air conditioning compressor, achieving a comprehensive effect of efficient heat dissipation, energy saving and noise reduction, and extended component life. The air temperature threshold can be 10℃, 15℃, 20℃, or 25℃. S2. The initial angle of the windward plate is preset to 0° (that is, the windward plate extends along the first direction, which can also be understood as parallel to the first direction). The control module reads the regional temperature T and heating rate V of each power module area output by the second detection unit in real time, and calculates the weight for each power module area. The target angle of the windward plate is calculated based on the absolute value of Wv. The control module controls the extension or retraction length of the electric telescopic rod through the driver, so that the windward plate rotates to the target angle to the side with lower weight, expands the flow channel cross section of the area with higher weight (hotter) (overheat priority area), and contracts the flow channel cross section of the area with lower weight (colder) to achieve adaptive airflow distribution. If any power module area satisfies T>65℃ or V>0.3℃ / s, it is an overheat priority area. Wv is the weight difference between adjacent power module areas. The system utilizes a wind vane to redistribute airflow in real time across different power module zones. Initially, the wind vane is parallel to the airflow direction (0°) to ensure a relatively uniform baseline airflow across the different power module zones. The control module continuously receives the shell temperature and V of each zone from the second detection unit. It first determines the overheating priority zone based on either "temperature above 65℃" or "V>0.3℃ / s". Then, it calculates the comprehensive weight for all zones and takes the absolute value of the weight difference between adjacent zones to calculate the target rotation angle of the wind vane (i.e., the target angle) (the larger the absolute value of the weight difference, the larger the angle). The driver then controls the telescopic electric telescopic rod. The transmission rod and drive rod swing the first end of the windward plate towards the side with lower weight, so that the windward plate partially blocks the airflow of the relatively cold power module area and widens the airflow of the relatively hot power module area, forming a cross-sectional gradient that narrows the cold area and widens the hot area. As a result, the main airflow generates a pressure difference and directional flow in the heat dissipation channel. More cold air is automatically directed to the overheat priority area, while the airflow in the relatively low temperature area is moderately reduced. The entire process can dynamically balance the temperature field without stopping the machine, achieve an adaptive heat dissipation effect, and avoid local overheating that would increase the overall heat dissipation power, leading to increased energy consumption and local overcooling. S3. When all power module areas meet the conditions of T>65℃ or V>0.3℃ / s, the preset threshold of gas temperature is reduced to obtain the corrected threshold. The control module controls the air conditioner compressor according to the corrected threshold. When all power module zones are detected to simultaneously enter a high-risk state—that is, T all exceeds 65℃ or V all exceeds 0.3℃ / s—it indicates that airflow adjustment by the air intake alone is insufficient to meet the heat dissipation requirements. At this time, the control module immediately triggers a first-level threshold shift, lowering the original air temperature setpoint (e.g., 25℃) used to start / stop the compressor to a lower correction threshold (e.g., 20℃). This new threshold is written into the air compressor power closed loop, requiring the control module to further reduce the intake air temperature before allowing the air compressor to unload or stop. Through this dynamic adjustment, the air conditioning compressor is forced to operate at high load or even full power, increasing the heat exchange driving force of the condenser tube and rapidly lowering the total air temperature. This provides additional cooling capacity to the overheat priority zone and reopens the thermal safety margin. Once the temperature or V in any zone returns to the normal range, the control module restores the original threshold, avoiding prolonged overcooling that could lead to energy waste or condensation risks.

[0030] The target angle of the windward plate is min[58°, 15° × |Wv|], where 58° is the upper limit of the angle and 15° is the reference angle. That is, the actual deflection angle will only occur when the weight difference accumulates to a considerable level (≈1℃ or 0.1℃ / s). A deflection angle of 10° can also be added before 15° × |Wv|. When the weights are all 0, there will be no automatic deflection of 10°. Only when the weights are greater than 0, that is, when deflection is required, will a deflection angle of 10° be added. Therefore, the target angle becomes target angle = min[58°, 10° + 15° × |Wv|], which avoids the plate shaking due to the small angle adjustment required, which would cause wear on the transmission components. The upper limit of the target angle of the wind vane can also be 30°, 35°, 40° or 50°, and the angle is not distinguished by positive or negative. Even if it swings forward or backward, it is the angle of travel relative to the initial angle. For example, a forward or backward swing of 30° is the angle between the wind vane after the swing and the wind vane at the initial angle. When the wind vane swings 10° to one side for the first time according to the weight, and then needs to swing 10° to the other side of the wind vane for the second time according to the weight, it is 10° relative to the initial angle, and is equivalent to a swing of 20° relative to the first swing. When it needs to be adjusted by 5° according to the weight, it is 5° relative to the first swing.

[0031] Weight = max[0,T-55] + 15×max[0,V-0.05]. When T exceeds 55℃, a gradient with a weight of 1℃ is given for the static thermal load. When the device casing temperature is below 55℃, the heat dissipation margin is sufficient. Therefore, T≤55℃ is directly assigned a weight of 0. Only the part exceeding 55℃ is linearly included with a weight increase of 1℃ for every 1℃ increase. This allows the temperature to be monitored step by step within the safe-warning range of 55–65℃, without having to wait for the hard threshold of 65℃ to take action. 0.05 is the slow heating threshold. The normal fluctuation of V in heat dissipation balance is usually ≤0.03℃ / s. 0.05℃ / s is taken as the starting point for "accelerated heating" to avoid over-responding to slight thermal noise. When V exceeds 0.05℃ / s, a weight of 0.15 is given with 0.01℃ / s. 15 is the rate weight amplification factor. Therefore, V≤0.05℃ / s is directly assigned a weight of 0.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation component for a power module, characterized in that: It includes an air intake mechanism (10), a cooling mechanism (20), a detection mechanism, and a heat dissipation channel (41) that houses the power module group (50). The air intake mechanism (10), cooling mechanism (20), detection mechanism and power module group (50) are arranged sequentially in the heat dissipation channel (41) along the first direction; The cooling mechanism (20) includes an inlet pipe (21) and an outlet pipe (22) arranged sequentially along a first direction. The inlet pipe (21) is connected to the liquid output end of the air conditioning compressor, and the outlet pipe (22) is connected to the liquid input end of the air conditioning compressor. It also includes a plurality of condenser pipes (23) evenly distributed along a second direction. One end of each condenser pipe (23) is connected to the inlet pipe (21), and the other end is connected to the outlet pipe (22). The projection of the middle part of the condenser pipe (23) along the second direction is bent in a direction away from both ends, and the projections of the two ends along the first direction do not coincide. The detection mechanism is used to detect the air temperature after passing through the condenser (23) and to adjust the power of the air conditioning compressor.

2. The heat dissipation assembly for a power module according to claim 1, characterized in that: The condenser tube (23) includes a first tube section (231), a second tube section (232), and a connecting tube section (233). The first tube section (231) and the second tube section (232) both extend along a third direction, and the projections of the first tube section (231) and the second tube section (232) along a first direction do not overlap. One end of the first tube section (231) is connected to the liquid inlet pipe (21), and the other end is connected to one end of the connecting tube section (233). One end of the second tube section (232) is connected to the liquid outlet pipe (22), and the other end is connected to the other end of the connecting tube section (233). The connecting tube section (233) bends along a third direction and away from the direction of the second tube section (232) away from the first tube section (231).

3. The heat dissipation assembly for a power module according to claim 2, characterized in that: The cooling mechanism (20) also includes a plurality of heat dissipation fins (24) evenly distributed along a third direction. The heat dissipation fins (24) are fixedly connected to the outer surfaces of the first tube (231) and the second tube (232). The liquid inlet pipe (21) and the liquid outlet pipe (22) are located below the heat dissipation fins (24).

4. The heat dissipation assembly for a power module according to claim 1, characterized in that: It also includes an adjustment mechanism (60), which includes a wind vane (61) and an adjustment drive (62). The wind vane (61) is disposed between the cooling mechanism (20) and the power module assembly (50). The two ends of the wind vane (61) are a first end and a second end along a first direction, wherein the second end is close to the power module assembly (50) and is rotatably connected to the inner top wall of the heat dissipation channel (41). The drive end of the adjustment drive (62) is connected to the wind vane (61) and is used to drive the first end of the wind vane (61) to swing within the heat dissipation channel (41).

5. The heat dissipation assembly for a power module according to claim 4, characterized in that: The adjustment drive component (62) includes an electric telescopic rod (621), a transmission rod (622), and a drive rod (623). The telescopic end of the electric telescopic rod (621) is rotatably connected to one end of the transmission rod (622), the other end of the transmission rod (622) is rotatably connected to one end of the drive rod (623), and the other end of the drive rod (623) is fixedly connected to the second end of the windward plate (61).

6. The heat dissipation assembly for a power module according to claim 4, characterized in that: The power module group (50) is divided into at least two power module areas (51). The windproof plate (61) is disposed between two adjacent power module areas (51). The power module area (51) includes multiple power module components. The number of windproof plates (61) is one less than the number of power module areas (51).

7. The heat dissipation assembly for a power module according to claim 6, characterized in that: The detection mechanism includes a control module, a driver, and a first detection unit. The first detection unit is used to detect the airflow temperature after passing through the condenser (23). The first detection unit is electrically connected to the input end of the control module. The output end of the control module is electrically connected to the input end of the driver. The output end of the driver is electrically connected to the electric telescopic rod (621) and the air conditioning compressor, respectively. The driver is used to control the extension length of the telescopic end of the electric telescopic rod (621) and the power of the air conditioning compressor. It also includes a second detection unit, which is used to detect the temperature of the power module area (51), and the output end of the second detection unit is connected to the input end of the control module.

8. The heat dissipation assembly for a power module according to claim 7, characterized in that: It also includes a heat dissipation body (40), which includes a heat dissipation shell (42). The heat dissipation channel (41) is opened inside the heat dissipation shell (42). The air intake mechanism (10) includes an air intake shell (11) and an air intake fan (12). The air intake shell (11) is detachably connected to one end of the heat dissipation shell (42) by bolts and is located inside the heat dissipation channel (41). The air intake fan (12) is installed inside the air intake shell (11) to generate wind to draw outside air into the heat dissipation channel (41). The end of the heat dissipation shell (42) away from the air intake shell (11) is detachably connected to an air outlet shell (43) by bolts. An air outlet fan (44) is installed inside the air outlet shell (43). Filter screens are provided on the end faces of both the air intake shell (11) and the air outlet shell (43).

9. A heat dissipation method for a power supply module, characterized in that: The heat dissipation assembly of the power module as described in any one of claims 1-8 includes: S1. Start the air intake fan at a preset speed to draw outside air into the heat dissipation channel, where it passes through the condenser and heat dissipation fins. The first detection unit continuously samples the air temperature after passing through the condenser and heat dissipation fins and transmits the data to the control module. When the air temperature exceeds a preset threshold, the control module starts the air conditioning compressor at a preset power, allowing the refrigerant to flow through the inlet pipe, condenser, and outlet pipe. After the air has passed through the condenser for a preset time and the air temperature exceeds the preset threshold, the control module increases the power of the air conditioning compressor. When the air temperature is below the preset threshold, the air conditioning compressor is turned off. S2. The initial angle of the windward plate is set to 0°. The control module reads the regional temperature T and heating rate V of each power module area output by the second detection unit in real time, and calculates the weight for each power module area. The target angle of the windward plate is calculated based on the absolute value of Wv. The control module controls the extension or retraction length of the electric telescopic rod through the driver, so that the windward plate rotates to the side with the lower weight to the target angle. If any power module area satisfies T>65℃ or V>0.3℃ / s, it is an overheat priority area. Wv is the weight difference between adjacent power module areas. S3. When all power module areas meet the conditions of T>65℃ or V>0.3℃ / s, the preset threshold of gas temperature is reduced to obtain the correction threshold. The control module controls the air conditioning compressor according to the correction threshold.

10. A heat dissipation method for a power module according to claim 9, characterized in that: The target angle of the windward plate is min[58°, 15° × |Wv|].

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