A high-uniformity radiator for hydrogen fuel cell and a high-uniformity heat dissipation method

Abstract

The present invention relates to the field of battery heat dissipation technology, specifically to a high-uniformity radiator for hydrogen fuel cells and a high-uniformity heat dissipation method, comprising: a mounting frame, and a heat dissipation box fixed to a side wall of the mounting frame, a heat dissipation cavity being formed between the heat dissipation box and the mounting frame, a fan being fixed to the end of the heat dissipation box facing away from the mounting frame; a plurality of heat dissipation fins being fixed to the mounting frame and being equidistantly distributed, a heat dissipation structure for disturbing the flow of air is provided on the heat dissipation fins; an air guide mechanism being provided in the heat dissipation box, a first air guide plate being connected to the air guide mechanism, a follow-up supercharging mechanism is further provided in the heat dissipation box, a second air guide plate being connected to the follow-up supercharging mechanism, and by controlling the first air guide plate and the second air guide plate to perform a swinging action, it is possible to deliver a pressurized airflow to the edge weak wind area to ensure that the heat flow dissipated in the central area can be smoothly discharged from the edge area.

Description

Technical Field

[0001] The present invention relates to the technical field of battery heat dissipation, and in particular to a high-uniformity radiator for a hydrogen fuel cell and a high-uniformity heat dissipation method. Background Art

[0002] Heat dissipation of hydrogen fuel cells is one of the keys to their stable operation, and heat is mainly dissipated through the following methods.

[0003] The coolant circulation system uses liquid to flow through the cooling channels of the fuel cell stack, absorbs heat, and then dissipates it into the environment through the radiator; air cooling uses air convection or forced fan blowing to directly cool the battery stack; phase change material cooling uses phase change material (such as paraffin) to absorb heat and then melt, and then re-solidify and circulate through an external radiator.

[0004] Air cooling has the advantages of simple structure, light weight, and low cost. However, in actual use, after the fins conduct heat from the battery, natural convection or forced air cooling cannot fully act on the fins. Consequently, the heat dissipation effect at the edge of the fins is poor, causing heat to accumulate at the edge of the fins, leading to fin aging or thermal stress deformation.

[0005] To this end, the direction of the airflow can be continuously changed by setting a guide plate, so that the area of ​​the airflow acting on the fins increases, thereby reducing the heat dissipation dead angle and enhancing the heat dissipation effect. However, when the guide plate changes the direction of the airflow, the airflow will inevitably be subject to the guide resistance, resulting in a decrease in the wind pressure acting on the fins, and it is difficult for the airflow to form strong turbulence in the fin gap, and the problem of poor heat dissipation effect in the fin edge area will still occur. Summary of the Invention

[0006] The object of the present invention is to provide a high-uniformity radiator and a high-uniformity heat dissipation method for a hydrogen fuel cell to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A high-uniformity radiator for a hydrogen fuel cell, comprising:

[0009] A mounting frame, and a heat dissipation box fixed to a side wall of the mounting frame, a heat dissipation cavity being formed between the heat dissipation box and the mounting frame, and a fan being fixed to one end of the heat dissipation box away from the mounting frame;

[0010] Also includes:

[0011] A plurality of heat dissipation fins are fixed on the mounting frame and are evenly distributed, and a heat dissipation structure for disturbing the air flow is provided on the heat dissipation fins;

[0012] An air guide mechanism is arranged in the heat sink, and a first air guide plate is connected to the air guide mechanism. A follow-up supercharging mechanism is also arranged in the heat sink, and a second air guide plate is connected to the follow-up supercharging mechanism. The air guide mechanism can drive the follow-up supercharging mechanism to move, so as to perform a supercharging and drainage action on the airflow by adjusting the angle between the first air guide plate and the second air guide plate.

[0013] As a further solution of the present invention: the air guide mechanism includes a cylinder fixed on the heat dissipation box and symmetrically arranged, and a movable plate is fixed to the telescopic end of the cylinder.

[0014] As a further solution of the present invention: the air guide mechanism also includes a first rotating rod rotatably installed in the heat dissipation box for adjusting the deflection angle of the first air guide plate, a first spiral groove is formed on the outer wall of the circumference of the first rotating rod, a first movable sleeve is fixed on the movable plate and slides axially along the first rotating rod, and a first limit block is fixed on the inner wall of the first movable sleeve and slides in engagement with the first spiral groove.

[0015] As a further solution of the present invention: the follow-up supercharging mechanism includes a guide column fixed in the heat dissipation box, the guide column is axially slidable with a guide sleeve, and the guide sleeve is hinged with a connecting rod hinged to the cylinder;

[0016] It also includes a driven component and a guide component which are arranged on the guide sleeve and are used to control the deflection of the second air guide plate and slide axially along the guide column.

[0017] As a further embodiment of the present invention, the driven assembly includes a second rotating rod rotatably mounted on the guide sleeve and fixedly connected to the second air deflector, a second movable sleeve axially slidingly mounted on the second rotating rod, and a guide block fixed to an outer wall of the second movable sleeve;

[0018] It also includes a through slot and a clamping slot formed on the movable plate, the second movable sleeve passes through the through slot, and the guide block can slide along the clamping slot.

[0019] As a further solution of the present invention: the guide assembly includes a second spiral groove formed on the second rotating rod, and a second limiting block is fixed to the inner wall of the second movable sleeve and is slidably engaged with the second spiral groove.

[0020] As a further solution of the present invention: the heat dissipation structure includes a wedge-shaped block, a first arc protrusion, and a second arc protrusion fixed on the heat dissipation fin for guiding the gas flow, and there are multiple first arc protrusions and second arc protrusions distributed at equal intervals. Inclined plates for pressurizing the airflow are fixed at both ends of the heat dissipation fin.

[0021] As a further solution of the present invention: a spoiler mechanism for converting the vertical airflow into a longitudinal deflected airflow is provided on the second air guide plate, the spoiler mechanism includes a support column fixed on the second air guide plate, a fixed plate is fixed on the end of the support column, a deflection rod passing through the second air guide plate is rotatably installed on the fixed plate, and a first deflection plate and a second deflection plate for performing a spoiler action are fixed on the deflection rod.

[0022] As a further solution of the present invention: the spoiler mechanism also includes a follower plate which slides axially along the deflection rod and is slidably connected to the support column, the deflection rod is sleeved with a first spring and a second spring, the two ends of the first spring respectively abut against the second air guide plate and the follower plate, the two ends of the second spring respectively abut against the follower plate and the fixed plate, a third spiral groove is formed on the circumferential outer wall of the deflection rod, and a third limit block is fixed in the follower plate which is slidably engaged with the third spiral groove.

[0023] A high-uniformity heat dissipation method for a hydrogen fuel cell comprises the following steps:

[0024] Step 1: The fan starts working and continuously delivers flowing air into the heat dissipation chamber to dissipate heat from the heat dissipation fins;

[0025] Step 2: Under the action of the heat dissipation structure, the airflow is controlled to flow to both sides of the heat dissipation fins, and the airflow is pressurized at both ends of the heat dissipation fins;

[0026] Step 3: The air guide mechanism operates and drives the follower pressurizing mechanism to move, causing the first air guide plate and the second air guide plate to swing toward each other, thereby converting the vertical airflow into a horizontally inclined airflow and performing a pressurizing action on the airflow;

[0027] Step 4: The gas flow will also drive the turbulence mechanism to move, so that the vertical and horizontal inclined airflow is converted into a longitudinal inclined airflow to continuously perform turbulence action on the gas.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: the heat dissipation structure of the present application can make the airflow disturbance blown in the central area of ​​the heat dissipation fins into a turbulent state, and through the cooperation of the first air guide plate and the second air guide plate, the vertical airflow blown by the fan is converged, and then a pressurized inclined blowing action is performed to achieve a processing method of central turbulence and edge pressurization to ensure the heat dissipation effect and heat dissipation uniformity. Specifically, under the action of the heat dissipation structure, the gas blown by the fan can be controlled to flow toward both sides of the heat dissipation fins, and provide a disturbance effect during the flow process to increase the heat exchange time and enhance the heat dissipation efficiency. At the same time, through the cooperation of the air guide mechanism and the follow-up pressurization mechanism, the first air guide plate and the second air guide plate can be controlled to perform a swinging action to converge and pressurize the airflow while controlling the airflow to blow toward the edge position of the heat dissipation fin, thereby ensuring that the edge area of ​​the heat dissipation fin can also be effectively processed.

[0029] Through the cooperation of the first air guide plate and the second air guide plate, the flow rate of the gas in the edge area can be accelerated, and the heat diffused from the central area to the edge area can be discharged more quickly, thereby lowering the temperature of the edge area, reducing the uneven expansion of the battery material caused by temperature difference, avoiding sealing failure or membrane electrode cracking, and balancing the overall airflow distribution, so that all heat dissipation fins can participate in effective heat dissipation, thereby enhancing the heat dissipation efficiency.

[0030] By controlling the passive deflection of the first deflection plate and the second deflection plate through the spoiler mechanism, the direction of the airflow can be changed periodically, non-steady-state vortices can be generated in the fin gap, the thermal boundary layer can be destroyed, and the change of angle can effectively prevent the airflow from forming a steady-state low-speed zone in a specific area and cover the entire surface of the heat sink fin. In this way, through the dual cooperation of the first air guide plate and the second air guide plate and the first deflection plate and the second deflection plate, the vertical airflow can be converted into a horizontally inclined airflow and a longitudinally inclined airflow to ensure that the edge area of ​​the heat sink fin is effectively cooled while ensuring the uniformity of the heat sink fin heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of an embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0032] Figure 2 This is a structural schematic diagram from another angle of an embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0033] Figure 3 This is a schematic diagram of the structure inside the heat dissipation box of an embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0034] Figure 4 This is a structural schematic diagram of the mounting frame, heat dissipation fins, and heat dissipation structure in an embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0035] Figure 5This is a schematic diagram of the connection relationship between the air guide mechanism and the follow-up supercharging mechanism in an embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0036] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point A.

[0037] Figure 7 This is a structural schematic diagram of part of the air guide mechanism and part of the follow-up boost mechanism in an embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0038] Figure 8 This is a schematic diagram of the explosion structure of part of the air guide mechanism and part of the follow-up boost mechanism in an embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0039] Figure 9 This is a structural schematic diagram of part of the follow-up boost mechanism and the flow disturbance mechanism in an embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0040] Figure 10 This is a structural schematic diagram of the spoiler mechanism in one embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0041] Figure 11 This is a schematic diagram of the explosion structure of the spoiler mechanism in one embodiment of a high-uniformity radiator for a hydrogen fuel cell.

[0042] In the figure: 1, mounting frame; 2, heat sink; 3, fan; 4, heat fin; 401, wedge block; 402, first arc protrusion; 403, second arc protrusion; 404, inclined plate; 5, first rotating rod; 501, first spiral groove; 6, first air guide plate; 7, first movable sleeve; 8, first limit block; 9, guide column; 10, guide sleeve; 11, second rotating rod; 1101, second spiral groove; 12, second Air guide plate; 13. Second movable sleeve; 14. Second limit block; 15. Guide block; 16. Cylinder; 17. Connecting rod; 18. Movable plate; 1801. Through groove; 1802. Slot; 19. Deflection rod; 1901. Third spiral groove; 20. First deflection plate; 21. Second deflection plate; 22. Support column; 23. Fixed plate; 24. Follow-up plate; 25. Third limit block; 26. First spring; 27. Second spring. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0045] See also Figures 1 to 11 In an embodiment of the present invention, a high-uniformity radiator for a hydrogen fuel cell includes:

[0046] A mounting frame 1, and a heat dissipation box 2 fixed to a side wall of the mounting frame 1, a heat dissipation cavity being formed between the heat dissipation box 2 and the mounting frame 1, and a fan 3 being fixed to one end of the heat dissipation box 2 facing away from the mounting frame 1;

[0047] Also includes:

[0048] A plurality of heat dissipation fins 4 are fixed to the mounting frame 1 and are evenly distributed. The heat dissipation fins 4 are provided with a heat dissipation structure for disturbing the air flow.

[0049] An air guide mechanism is arranged in the heat dissipation box 2, and a first air guide plate 6 is connected to the air guide mechanism. A follow-up supercharging mechanism is also provided in the heat dissipation box 2, and a second air guide plate 12 is connected to the follow-up supercharging mechanism. The air guide mechanism can drive the follow-up supercharging mechanism to move, so as to perform a supercharging and drainage action on the airflow by adjusting the angle between the first air guide plate 6 and the second air guide plate 12.

[0050] Specifically, when the mounting bracket 1 is mounted on the heat-conducting substrate of the hydrogen fuel cell, thermal grease can be applied on the heat-conducting substrate so that the heat generated by the battery can be smoothly conducted to the heat dissipation fins 4. At this time, the fan 3 works and blows the outside air into the heat dissipation cavity. When the airflow flows into the gap between the heat dissipation fins 4, under the action of the heat dissipation structure, the gas flows along the length direction of the heat dissipation fins 4 to both sides of the heat dissipation fins 4. During the gas flow, the heat dissipation structure will also hinder the airflow, so that the airflow forms a turbulent state. The turbulent flow can destroy the thermal boundary layer and prolong the residence time of the airflow to improve the heat exchange efficiency and heat exchange time, thereby driving the heat in the central area of ​​the heat dissipation fins 4 toward the edge area. When the gas flows to the edge area, the airflow is pressurized under the action of the heat dissipation structure to accelerate the overflow rate of the airflow from the edge to a certain extent. At the same time, due to the fan 3 The range that can act on the heat dissipation fins 4 cannot completely cover all the heat dissipation fins 4. The air flow velocity in the edge area of ​​the heat dissipation fins 4 is slow, and low-speed vortices are easily formed, which cannot effectively take away heat, and may cause aging or thermal stress deformation of the heat dissipation fins 4. Therefore, under the action of the air guide mechanism, the follow-up boosting mechanism is driven to move, so that the first air guide plate 6 and the second air guide plate 12 are deflected in the direction of approaching each other, and the second air guide plate 12 moves in the direction away from the first air guide plate 6, so as to increase the amount of air flow gathered by the first air guide plate 6 and the second air guide plate 12, and after the air flow is pressurized, the air flow is controlled to be converted from a vertical flow direction to an inclined direction to act on the edge position of the heat dissipation fin 4, thereby accelerating the gas flow velocity in the edge area of ​​the heat dissipation fin 4, so that the entire heat dissipation fin 4 can be evenly and effectively dissipated, so that the hydrogen fuel cell can obtain highly uniform heat dissipation.

[0051] See also Figure 2-Figure 4 The heat dissipation structure includes a wedge-shaped block 401 fixed on the heat dissipation fin 4 for guiding the gas flow, a first circular arc protrusion 402, and a second circular arc protrusion 403. There are multiple first circular arc protrusions 402 and second circular arc protrusions 403 distributed at equal intervals. Inclined plates 404 for pressurizing the airflow are fixed at both ends of the heat dissipation fin 4.

[0052] See also Figure 4 Specifically, the wedge-shaped block 401 is located at the center of the heat dissipation fin 4 and is arranged in a triangular protrusion shape. The first arc protrusion 402 and the second arc protrusion 403 are arranged in an arc protrusion shape, and the size of the first arc protrusion 402 is larger than the size of the second arc protrusion 403. The inclined plate 404 is arranged in an inclined shape, so that the air flow gap formed between two adjacent heat dissipation fins 4 gradually decreases, so that the side exhaust position of the heat dissipation fin 4 is in a closed state.

[0053] When the fan 3 is working, the airflow can be blown vertically onto the heat dissipation fins 4. Under the guidance of the wedge block 401, the airflow in the central area of ​​the heat dissipation fins 4 is controlled to flow toward the horizontal sides of the heat dissipation fins 4. When the airflow flows through the first arc protrusion 402 and the second arc protrusion 403, the first arc protrusion 402 and the second arc protrusion 403 force the airflow to generate a separation vortex, breaking the laminar boundary layer (low heat exchange efficiency area) on the surface of the heat dissipation fin 4, so that the high-temperature surface directly contacts the low-temperature airflow core area. At the same time, the airflow can also be made turbulent, making the airflow path circuitous, increasing the contact time with the fins, and improving the heat extraction efficiency.

[0054] As the gas continues to flow, it will gradually flow to the edge positions on both sides of the heat sink fin 4. Under the action of the inclined plate 404, the air flow passing through will be pressurized to ensure that when the gas flow rate at the edge of the heat sink fin 4 is slow, the gas can be assisted to be discharged smoothly from the edge area.

[0055] See also Figure 1 、 Figure 3 、 Figure 5-Figure 8 The air guide mechanism includes a cylinder 16 fixed to the heat dissipation box 2 and symmetrically arranged, and a movable plate 18 is fixed to the telescopic end of the cylinder 16. The air guide mechanism also includes a first rotating rod 5 rotatably installed in the heat dissipation box 2 for adjusting the deflection angle of the first air guide plate 6. A first spiral groove 501 is formed on the outer wall of the circumference of the first rotating rod 5. A first movable sleeve 7 that slides axially along the first rotating rod 5 is fixed on the movable plate 18, and a first limit block 8 that slides in engagement with the first spiral groove 501 is fixed to the inner wall of the first movable sleeve 7.

[0056] See also Figure 3 、 Figure 5-Figure 9The follow-up supercharging mechanism includes a guide column 9 fixed in the heat dissipation box 2, and the guide column 9 axially slides with a guide sleeve 10, and the guide sleeve 10 is hinged with a connecting rod 17 hinged to the cylinder 16; it also includes a follower assembly and a guide assembly arranged on the guide sleeve 10 for controlling the deflection of the second air guide plate 12 and sliding axially along the guide column 9, the follower assembly includes a second rotating rod 11 rotatably mounted on the guide sleeve 10 and fixedly connected to the second air guide plate 12, the second rotating rod 1 A second movable sleeve 13 is axially slidable therein, and a guide block 15 is fixed to the outer wall of the second movable sleeve 13. The movable plate 18 also includes a through groove 1801 and a clamping groove 1802 formed on the movable plate 18. The second movable sleeve 13 passes through the through groove 1801, and the guide block 15 can slide along the clamping groove 1802. The guide assembly includes a second spiral groove 1101 formed on the second rotating rod 11, and a second limiting block 14 is fixed to the inner wall of the second movable sleeve 13 to slide and engage with the second spiral groove 1101.

[0057] See also Figure 5-Figure 9 It should be noted that the length of the first spiral groove 501 formed along the axial direction of the first rotating rod 5 is the same as the length of the second spiral groove 1101 formed along the axial direction of the second rotating rod 11, and the spiral directions are opposite. The pitch of the first spiral groove 501 is smaller than the pitch of the second spiral groove 1101. Therefore, the number of spiral turns of the first spiral groove 501 is greater than the number of spiral turns of the second spiral groove 1101. In the initial state, when the telescopic rod of the cylinder 16 is in a retracted state, under the action of the movable plate 18, the first movable sleeve 7 and the second movable sleeve 13 are both away from the first air guide plate 6 and the end of its travel in the direction of the second air guide plate 12, so that the first limit block 8 is located at the end of its travel on the side of the first spiral groove 501 facing away from the first air guide plate 6, and the second limit block 14 is located at the end of its travel on the side of the second spiral groove 1101 facing away from the second air guide plate 12. At this time, the first air guide plate 6 and the second air guide plate 12 are parallel to each other and perpendicular to the heat dissipating fins 4. Under the action of the cylinder 16, the guide sleeve 10 is controlled by the connecting rod 17 to be located at the end of its travel in the direction toward the first air guide plate 6, so that the distance between the second air guide plate 12 and the first air guide plate 6 is minimized;

[0058] When the fan 3 is working, since the first air guide plate 6 and the second air guide plate 12 are in a state parallel to the direction of gas flow, the first air guide plate 6 and the second air guide plate 12 will not change the direction of the air flow. In order to ensure that the heat dissipation fins 4 can be fully cooled, at this time, the cylinder 16 works and pushes the movable plate 18 to move, thereby driving the first movable sleeve 7 and the second movable sleeve 13 to slide along the axial direction of the first rotating rod 5 and the second rotating rod 11 respectively. The first movable sleeve 7 and the second movable sleeve 13 will also drive the first limit block 8 and the second limit block 14 to move. Under the action of the first limit block 8 and the first spiral groove 501, the first rotating rod 5 rotates, thereby controlling the first air guide plate 6 to swing toward the second air guide plate 12. Under the action of the second limit block 14 and the second spiral groove 1101, the second rotating rod 11 rotates in the opposite direction to the rotation direction of the first rotating rod 5, thereby controlling the second air guide plate 12 to also swing toward the first air guide plate 6, and the swing angle is smaller than the swing angle of the first air guide plate 6. Under the action of the first air guide plate 6 and the second air guide plate 12, the air guide port formed by the two gradually decreases.

[0059] At the same time, the cylinder 16 will also control the guide sleeve 10 to slide axially along the guide column 9 through the connecting rod 17, and move toward the side wall of the heat sink 2, thereby driving the second rotating rod 11 to move in the direction away from the first rotating rod 5, so that the amount of gas that can be gathered by the first air guide plate 6 and the second air guide plate 12 increases. Since the power of the fan 3 remains unchanged, the amount of gas flowing through the first air guide plate 6 and the second air guide plate 12 increases, and the air guide port is in a contracted state. Therefore, when the airflow passes through the air guide port, a convergence and pressurization effect can be obtained, which increases the airflow velocity and converts the originally vertically blown airflow into a horizontally inclined blowing airflow, so that the airflow is blown toward both sides of the heat sink 4, thereby more comprehensively dissipating the heat of the heat sink 4.

[0060] Preferably, through the cooperation of the first air guide plate 6 and the second air guide plate 12, it can be achieved that when the two perform the swinging action, after the airflow is converged, a boost blowing action is performed, and the vertical airflow is converted into an inclined airflow, which acts on the edge position of the heat dissipating fin 4, which can not only speed up the flow rate of the gas in the edge area, but also more quickly discharge the heat diffused from the center area to the edge area, thereby achieving the purpose of lowering the temperature of the edge area, reducing the uneven expansion of the battery material caused by temperature difference, avoiding sealing failure or membrane electrode cracking, but also balance the overall airflow distribution, so that all heat dissipating fins 4 participate in effective heat dissipation, thereby enhancing the heat dissipation efficiency.

[0061] Among them, the pressurized airflow carries higher kinetic energy and can penetrate the gap between the edge heat dissipation fins 4, thereby overcoming the original low-speed vortex. In this way, while maintaining the power of the fan 3, it can not only provide the heat dissipation efficiency of the heat dissipation fins 4 with lower energy consumption, but also ensure the heat dissipation uniformity of the heat dissipation fins 4 to ensure the heat dissipation uniformity of the battery.

[0062] See also Figure 5 、 Figure 7 、 Figures 9-11 , a spoiler mechanism for converting the vertical airflow into a longitudinal deflection airflow is provided on the second air guide plate 12, the spoiler mechanism includes a support column 22 fixed on the second air guide plate 12, a fixed plate 23 is fixed at the end of the support column 22, a deflection rod 19 that passes through the second air guide plate 12 is rotatably mounted on the fixed plate 23, and a first deflection plate 20 and a second deflection plate 21 for performing a spoiler action are fixed on the deflection rod 19, the spoiler mechanism also includes an axial sliding member along the deflection rod 19 And the follower plate 24 is slidably connected to the support column 22, and the deflection rod 19 is provided with a first spring 26 and a second spring 27, the two ends of the first spring 26 are respectively in contact with the second air guide plate 12 and the follower plate 24, and the two ends of the second spring 27 are respectively in contact with the follower plate 24 and the fixed plate 23, a third spiral groove 1901 is formed on the circumferential outer wall of the deflection rod 19, and a third limit block 25 is fixed in the follower plate 24 and is slidably engaged with the third spiral groove 1901.

[0063] Furthermore, in the initial state, the first spring 26 and the second spring 27 are both in a compressed state, so that both sides of the follower plate 24 are subjected to thrust and maintain relative balance. Under the action of the follower plate 24, the third limit block 25 is located at the center of the third spiral groove 1901, so that the first deflection plate 20 and the second deflection plate 21 are controlled to be in a stationary state through the deflection rod 19, and the contact area between the first deflection plate 20 and the airflow is larger than the contact area between the second deflection plate 21 and the airflow.

[0064] Since the air supply area of ​​the fan 3 cannot completely cover all the heat dissipating fins 4, the air flow rate at the edge of the heat dissipating fin 4 is slow, resulting in a large temperature difference between the edge area and the center area. When the first air guide plate 6 and the second air guide plate 12 are deflected, the vertical airflow can only be converted into a transverse inclined airflow. The heat dissipation efficiency of the transverse edge area of ​​the heat dissipating fin 4 is effectively improved, while the heat dissipation effect of the longitudinal edge area is still at a low state. In this regard, when the vertical wind force acts on the first deflection plate 20 and the second deflection plate 21, the two can guide the vertical airflow to flow in the longitudinal inclined direction, so that the longitudinal edge area is effectively cooled.

[0065] Since the force-bearing area of ​​the first deflection plate 20 is greater than the force-bearing area of ​​the second deflection plate 21, under the action of the first deflection plate 20, the deflection rod 19 rotates, thereby driving the third spiral groove 1901 to move. At this time, the third limit block 25 will slide along the third spiral groove 1901 relative to the deflection rod 19, thereby driving the follower plate 24 to slide along the axial direction of the support column 22 and move toward the second air guide plate 12, so that the first spring 26 is compressed, the second spring 27 is elastically released, and the follower plate 24 is in the elastic potential energy. Under the action, it has a tendency to move toward the fixed plate 23. As the deflection angle of the first deflection plate 20 increases, the force area of ​​the first deflection plate 20 decreases, and the force area of ​​the second deflection plate 21 increases. Until the maximum rotation angle of the deflection rod 19 is reached, the first spring 26 is elastically released and drives the deflection rod 19 to rotate toward the initial angle, so that the first deflection plate 20 deflects toward the initial position, and the above steps are repeated to continuously change the blowing angle of the longitudinal inclined airflow to increase the range of action on the heat dissipation fins 4.

[0066] Preferably, through the passive deflection of the first deflection plate 20 and the second deflection plate 21, the direction of the airflow can be changed periodically, non-steady-state vortices can be generated in the fin gap, the thermal boundary layer can be destroyed, and the change of angle can effectively prevent the airflow from forming a steady-state low-speed zone in a specific area and cover the entire surface of the heat dissipating fins 4. In this way, through the dual cooperation of the first air guide plate 6 and the second air guide plate 12 and the first deflection plate 20 and the second deflection plate 21, the vertical airflow can be converted into a horizontally inclined airflow and a longitudinally inclined airflow to ensure that the edge area of ​​the heat dissipating fins 4 is effectively dissipated while ensuring the uniformity of heat dissipation of the heat dissipating fins 4.

[0067] A high-uniformity heat dissipation method for a hydrogen fuel cell comprises the following steps:

[0068] Step 1: The fan 3 starts working and continuously delivers flowing air into the heat dissipation chamber to perform heat dissipation on the heat dissipation fins 4;

[0069] Step 2: Under the action of the heat dissipation structure, the airflow is controlled to flow to both sides of the heat dissipation fins 4, and the airflow is pressurized at both ends of the heat dissipation fins 4;

[0070] Step 3: The air guide mechanism operates and drives the follower pressurizing mechanism to move, causing the first air guide plate 6 and the second air guide plate 12 to swing toward each other, thereby converting the vertical airflow into a horizontally inclined airflow and performing a pressurizing action on the airflow;

[0071] Step 4: The gas flow will also drive the turbulence mechanism to move, so that the vertical and horizontal inclined airflow is converted into a longitudinal inclined airflow to continuously perform turbulence action on the gas.

[0072] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0073] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-uniformity radiator for a hydrogen fuel cell, comprising: A mounting frame, and a heat dissipation box fixed to a side wall of the mounting frame, a heat dissipation cavity being formed between the heat dissipation box and the mounting frame, and a fan being fixed to one end of the heat dissipation box away from the mounting frame; It is characterized by further comprising: A plurality of heat dissipation fins are fixed on the mounting frame and are evenly distributed, and a heat dissipation structure for disturbing the airflow is provided on the heat dissipation fins; an air guide mechanism disposed in the heat dissipation box, the air guide mechanism being connected to a first air guide plate, and a follower supercharging mechanism being further disposed in the heat dissipation box, the follower supercharging mechanism being connected to a second air guide plate, the air guide mechanism being capable of driving the follower supercharging mechanism to move, so as to perform a supercharging and guiding action on the airflow by adjusting the angle between the first air guide plate and the second air guide plate; The air guide mechanism includes a cylinder fixed on the heat dissipation box and symmetrically arranged, and a movable plate is fixed to the telescopic end of the cylinder; The air guide mechanism further includes a first rotating rod rotatably mounted in the heat dissipation box for adjusting the deflection angle of the first air guide plate, a first spiral groove being formed on an outer circumferential wall of the first rotating rod, a first movable sleeve being fixed to the movable plate and sliding along the axial direction of the first rotating rod, and a first limit block being fixed to an inner wall of the first movable sleeve and slidably engaged with the first spiral groove; The follow-up supercharging mechanism includes a guide column fixed in the heat dissipation box, a guide sleeve axially sliding on the guide column, and a connecting rod hinged to the cylinder is hinged on the guide sleeve; It also includes a driven assembly and a guide assembly provided on the guide sleeve for controlling the deflection of the second air guide plate and sliding axially along the guide column; The driven assembly includes a second rotating rod rotatably mounted on the guide sleeve and fixedly connected to the second air deflector, a second movable sleeve axially sliding on the second rotating rod, and a guide block fixed on the outer wall of the second movable sleeve; It also includes a through slot and a clamping slot formed on the movable plate, the second movable sleeve passes through the through slot, and the guide block can slide along the clamping slot; The guide assembly includes a second spiral groove formed on the second rotating rod, and a second limiting block slidably engaged with the second spiral groove is fixed to the inner wall of the second movable sleeve.

2. A high uniformity radiator for a hydrogen fuel cell according to claim 1, characterized in that: The heat dissipation structure includes a wedge-shaped block fixed on the heat dissipation fin for guiding the flow of gas, a first arc protrusion, and a second arc protrusion. There are multiple first arc protrusions and second arc protrusions distributed at equal intervals. Inclined plates for pressurizing the airflow are fixed at both ends of the heat dissipation fin.

3. The high uniformity radiator for a hydrogen fuel cell according to claim 1, characterized in that: The second air guide plate is provided with a spoiler mechanism for converting the vertical airflow into a longitudinal deflected airflow, the spoiler mechanism includes a support column fixed on the second air guide plate, a fixed plate is fixed at the end of the support column, a deflection rod passing through the second air guide plate is rotatably mounted on the fixed plate, and the first deflection plate and the second deflection plate for performing the spoiler action are fixed on the deflection rod.

4. A high uniformity radiator for a hydrogen fuel cell according to claim 3, characterized in that: The spoiler mechanism also includes a follower plate that slides axially along the deflection rod and is slidably connected to the support column. The deflection rod is provided with a first spring and a second spring. The two ends of the first spring are respectively abutted against the second air guide plate and the follower plate, and the two ends of the second spring are respectively abutted against the follower plate and the fixed plate. A third spiral groove is formed on the circumferential outer wall of the deflection rod, and a third limit block is fixed in the follower plate and is slidably engaged with the third spiral groove.

5. A high-uniformity heat dissipation method for a hydrogen fuel cell, using the high-uniformity heat dissipator for a hydrogen fuel cell according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: The fan starts working and continuously delivers flowing air into the heat dissipation chamber to dissipate heat from the heat dissipation fins; Step 2: Under the action of the heat dissipation structure, the airflow is controlled to flow to both sides of the heat dissipation fins, and the airflow is pressurized at both ends of the heat dissipation fins; Step 3: The air guide mechanism operates and drives the follower pressurizing mechanism to move, causing the first air guide plate and the second air guide plate to swing toward each other, thereby converting the vertical airflow into a horizontally inclined airflow and performing a pressurizing action on the airflow; Step 4: The gas flow will also drive the turbulence mechanism to move, so that the vertical and horizontal inclined airflow is converted into a longitudinal inclined airflow, so as to continuously perform turbulence action on the gas.

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