A low-resistance energy-absorbing lightweight cooling module

Abstract

The low-resistance energy-absorbing lightweight cooling module described in the present invention belongs to the technical field of automobile heat dissipation accessories, including an intercooler and a radiator, which are connected by a heat exchanger connection model and arranged side by side in a single-sided arrangement; the heat exchanger connection model includes air film holes and grid filling; the air film holes are opened on the front and rear walls of the heat exchanger connection model along the incoming flow direction, and the front and rear air film holes penetrate into independent internal flow channels along the flow direction; the grid filling is distributed around the air film holes in the heat exchanger. Through the side-by-side single-sided arrangement of the intercooler and the radiator, the heat dissipation unit is relatively independent, the contact surface is increased, and the performance is significantly improved; the air film holes form a structure with a flow channel on the heat exchanger connection model, and the grid filling is evenly filled around the flow channel, which reduces the weight of the cooling module, and can form an energy-absorbing structure to improve the overall quality.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile heat dissipation accessories, in particular to a low-resistance energy-absorbing and lightweight cooling module. Background Art

[0002] At present, with the increase in energy-saving and environmental protection requirements and the transformation of the transportation industry model, the research and application of lightweight technology has become a competitive advantage for major heavy-duty truck manufacturers. At present, automobile lightweighting is not a simple reduction or replacement of materials, but a process of achieving automobile lightweighting through the comprehensive integrated application of advanced design methods, advanced material technology, and advanced manufacturing processes while meeting automobile safety, economy, power and other functional requirements and taking into account multiple factors such as material cost and use cost. The modularization, thin-walling and hollowing development trend of automobile parts has brought new challenges to process technology.

[0003] The high compactness and lightweight design of automobiles have led to many radiator cooling modules being broken and damaged during use. Therefore, higher requirements are also put forward for the structural strength and durability reliability of the radiator. During use, the radiator tie rod often breaks. Through analysis, it can be preliminarily determined that the radiator cooling module tie rod of this commercial vehicle is broken due to vibration and impact. Studies have found that the problem of radiator product failure can be effectively reduced by the reasonable use of rubber vibration damping pads. The commonly used method is to select rubber vibration damping pads of different hardness to obtain a better vibration reduction effect. Rubber materials have a curled long-chain molecular structure and weak secondary forces between molecules, which makes rubber materials present unique viscoelastic properties and have good vibration reduction and sound insulation performance. Thin-walled energy-absorbing structures have the advantages of light weight, good load-bearing effect, and high energy absorption efficiency. With its excellent energy absorption performance and lightweight advantages, thin-walled energy-absorbing structures have been widely used in the automotive field.

[0004] For cooling systems, the suspension bracket structure of the module is usually critical, and its stress level determines the reliability of the system. In order to reduce the failure rate of the cooling system module, a bracket with appropriate stiffness must be designed. By improving the structure, the components can be made thin-walled, hollow, and composite to achieve the purpose of lightweighting. It is also possible to use lightweight materials such as metal or non-metal to replace steel materials to ensure structural stiffness while achieving the purpose of lightweighting. Lightweight and miniaturized cooling modules can reduce the weight of system pipeline components and the entire vehicle, and the daily maintenance cost of the system will also decrease accordingly, which has become a future development trend. Summary of the invention

[0005] In order to solve the problem that the current radiator cooling module is heavy and has low heat dissipation efficiency, the present invention provides a low-resistance energy-absorbing and lightweight cooling module.

[0006] The present invention is achieved through the following technical solutions:

[0007] A low-resistance energy-absorbing lightweight cooling module, comprising an intercooler and a radiator, wherein the intercooler and the radiator are connected via a heat exchanger connection model and are arranged side by side in a single-sided arrangement;

[0008] The heat exchanger connection model includes air film holes and grid filling; the air film holes are opened on the front and rear wall surfaces of the heat exchanger connection model along the incoming flow direction, and the front and rear air film holes penetrate into independent internal flow channels along the flow direction; the grid filling is distributed around the air film holes in the heat exchanger.

[0009] By arranging the intercooler and radiator side by side on a single surface, the heat dissipation unit is relatively independent, and the contact surface is increased, and the performance is significantly improved; the air film holes form a structure with a flow channel on the heat exchanger connection model, and the grid is filled and evenly filled on the periphery of the flow channel, which reduces the weight of the cooling module, forms an energy-absorbing structure, and improves the overall quality.

[0010] A further improvement of the present invention is that the spacing between the air film holes gradually decreases from the two sides to the middle, thereby increasing the flow channel area in the middle where the air volume is large.

[0011] A further improvement of the present invention is that the cross-sectional area of ​​the air film holes increases gradually from both sides to the middle, so as to match and adapt to the position in the middle where the wind volume is larger by increasing the cross-sectional area of ​​the air film holes distributed in the middle.

[0012] A further improvement of the present invention is that the 2-3 air film holes on the front wall of the heat exchanger connection model are connected to a corresponding air film hole on the rear wall of the heat exchanger connection model to form an inner flow channel. By utilizing the air film hole flow expansion and span structure, a small area with a temperature equivalent to the incoming air temperature can be formed on the rear wall, reducing the momentum of the cold air at the outlet of the air film hole, improving the adhesion of the cold air to the wall, and achieving a better heat insulation cooling effect.

[0013] A further improvement of the present invention is that the grid filling is four cylindrical tubes with coplanar rear ends and extending in all directions, and the angle between adjacent cylindrical tubes is 90°-130°, thereby improving the lightweight structure of the grid filling in the heat exchanger connection model and enhancing the supporting effect.

[0014] A further improvement of the present invention is that connecting frames for connecting the intercooler and the radiator are respectively provided on both sides of the heat exchanger connection model, and the supporting strength of the cooling module is further enhanced by the connecting frames.

[0015] A further improvement of the present invention is that the heat exchanger connection model is in a trapezoidal structure with a larger top and a smaller bottom, which can make the layout structure of the overall cooling module more compact and save occupied area.

[0016] A further improvement of the present invention is that the above-mentioned connecting frame includes 3-10 connecting round tubes, and the 3-10 connecting round tubes are connected at the bottom and the upper ends are extended to the surroundings. The upper ends of some connecting round tubes are connected to the intercooler, and the upper ends of other connecting round tubes are connected to the heat exchanger connection model; the diameter of the connecting round tubes gradually increases from bottom to top. The distribution of multiple connecting round tubes is adapted to the adaptation adjustment of the space reserved for the connecting frame, and the support strength is ensured by the variable diameter structure.

[0017] It can be seen from the above technical scheme that the beneficial effects of the present invention are: by arranging the intercooler and the radiator side by side on a single side, the heat dissipation unit is relatively independent, and the contact surface is increased, and the performance is significantly improved; the air film holes form a structure with a flow channel on the heat exchanger connection model, and the grid is filled and evenly filled on the periphery of the flow channel, which reduces the dead weight of the cooling module, and can form an energy-absorbing structure to improve the overall quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is an overall front view of the cooling module according to a specific embodiment of the present invention.

[0020] Figure 2 It is an overall rear view of the cooling module according to a specific embodiment of the present invention.

[0021] Figure 3 It is an overall triaxial diagram of the cooling module according to a specific embodiment of the present invention.

[0022] Figure 4 It is an overall top view of a cooling module according to a specific embodiment of the present invention.

[0023] Figure 5 It is an overall bottom view of the cooling module according to a specific embodiment of the present invention.

[0024] Figure 6 It is an overall right view of the cooling module according to a specific embodiment of the present invention.

[0025] Figure 7 It is a rear view of a heat exchanger connection model according to a specific embodiment of the present invention.

[0026] Figure 8 It is a front view of a heat exchanger connection model according to a specific embodiment of the present invention.

[0027] Fig. 9 It is a front view of a connecting frame according to a specific embodiment of the present invention.

[0028] Fig.10 It is a positive triaxial diagram of a connecting frame according to a specific embodiment of the present invention.

[0029] Fig.11 It is a half-section view of a heat dissipation belt model at a connection of a heat exchanger according to a specific embodiment of the present invention.

[0030] Fig.12 It is a front view of a bracket according to a specific embodiment of the present invention.

[0031] Fig.13 It is a rear view of the bracket according to a specific embodiment of the present invention.

[0032] Fig.14 This is a three-axis measurement of the bracket according to a specific embodiment of the present invention.

[0033] In the attached drawings: 1. intercooler, 2. radiator, 3. heat exchanger connection model, 4. bracket, 5. intercooler right cavity, 6. heat dissipation right cavity, 7. intercooler left cavity, 8. heat dissipation left cavity, 9. intercooler inlet, 10. heat dissipation inlet, 11. intercooler outlet, 12. heat dissipation outlet, 13. connecting frame, 14. air film hole, 15. grid filling, 151. cylindrical tube, 16. connecting circular tube, 17. grid model, 18. leg-shaped supporting structure, 19. dustpan hole, 20. first heat dissipation belt, 21. second heat dissipation belt. DETAILED DESCRIPTION

[0034] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0035] As attached Figure 1-14 As shown, a low-resistance energy-absorbing lightweight cooling module includes an intercooler 1 and a radiator 2, wherein the intercooler 1 and the radiator 2 are connected via a heat exchanger connection model 3 and are arranged side by side in a single-sided manner; the cooling module adopts a single-row parallel arrangement of an upper intercooler 1 and a lower radiator 2, with an overall length of 700-900mm and a width of 600-700mm. The thickness of the intercooler 1 is 40-60mm, and the thickness of the radiator 2 is 30-50mm.

[0036] The intercooler 1 comprises an intercooler right cavity 5, an intercooler left cavity 7, an intercooler inlet 9, an intercooler outlet 11 and a first heat dissipation belt 20; the intercooler right cavity 5 and the intercooler left cavity 7 are symmetrically arranged on both sides of the first heat dissipation belt 20, and the intercooler right cavity 5 and the intercooler left cavity 7 are respectively provided with an intercooler inlet 9 and an intercooler outlet 11. The core of the intercooler 1 is composed of 8-15 first heat dissipation belts 20, and the adjacent spacing of the first heat dissipation belts 20 on the intercooler 1 is 7-10 mm, and the adjacent spacing of the second heat dissipation belts 21 on the radiator 2 is 6-9 mm.

[0037] The radiator 2 includes a right heat dissipation cavity 6, a left heat dissipation cavity 8, a heat dissipation inlet 10, a heat dissipation outlet 12 and a second heat dissipation belt 21; the right heat dissipation cavity 6 and the left heat dissipation cavity 8 are symmetrically arranged on both sides of the second heat dissipation belt 21, and the right heat dissipation cavity 6 and the left heat dissipation cavity 8 have a heat dissipation inlet 10 and a heat dissipation outlet 12. The core of the radiator 2 is composed of 30-50 second heat dissipation belts 21.

[0038] Under the premise of a large space, appropriately increasing the distance between the radiators 2 is conducive to improving the heat dissipation efficiency. Reasonable selection of the distance between the radiators 2, too large or too small space distance will be detrimental to the system flow and heat transfer performance.

[0039] The heat exchanger connection model 3 includes air film holes 14 and grid fillings 15; the air film holes 14 are opened on the front and rear wall surfaces of the heat exchanger connection model 3 along the incoming flow direction, and the front and rear air film holes 14 penetrate into independent internal flow channels along the flow direction; the grid fillings 15 are distributed around the air film holes 14 in the heat exchanger.

[0040] By arranging the intercooler 1 and the radiator 2 side by side on a single surface, the heat dissipation unit is relatively independent, and the contact surface is increased, and the performance is significantly improved; the air film hole 14 forms a structure with a flow channel on the heat exchanger connection model 3, and the grid filling 15 is evenly filled on the periphery of the flow channel, which reduces the dead weight of the cooling module, forms an energy-absorbing structure, and improves the overall quality.

[0041] The spacing of the air film holes 14 gradually decreases from both sides to the middle. The flow channel area in the middle with large air volume is increased. The cross-sectional area of ​​the air film holes 14 gradually increases from both sides to the middle. By increasing the cross-sectional area of ​​the air film holes 14 distributed in the middle, a matching adaptation is formed with the position in the middle with large air volume.

[0042] The 2-3 air film holes 14 on the front wall of the heat exchanger connection model 3 are connected to one air film hole 14 on the rear wall of the heat exchanger connection model 3 to form an inner flow channel. By utilizing the flow expansion and span structure of the air film hole 14, a small area with a temperature equivalent to the incoming air temperature can be formed on the rear wall, reducing the momentum of the cold air at the outlet of the air film hole 14, improving the adhesion of the cold air to the wall, and achieving a better heat insulation cooling effect.

[0043] The number of air film holes 14 on the rear wall of the heat exchanger connection model 3 is 40-60, and the number of air film holes 14 on the front wall is 120-160. The air film holes 14 on the front wall are a combination of a circular and a sole-shaped structure, with the area gradually increasing from both sides to the middle, the diameter of the circle is 1-8mm, the area of ​​the sole shape is 40-50mm2, the length of the spline curve is 1-5mm, and the spacing between the circular and sole shapes is 3-6mm; the air film holes 14 on the rear wall are a hexagonal structure, with the area gradually increasing from both sides to the middle, with an area of ​​30-90mm2, a side length of 2-8mm, and a spacing of 6-12mm between the upper and lower rows of hexagonal air film holes 14, and a spacing of 10-25mm between the left and right rows of hexagonal air film holes 14. A hexagonal air film hole 14 on the rear wall and 2-3 air film holes 14 on the front wall are combined into an independent inner flow channel; the air film hole 14 on the front wall is a circular and sole-shaped combination structure divided into two major parts, one is three circles, and the other is a circle and a sole. The centers of the three circles are the vertices of a triangle, the side length of which is 2-7mm, the angle is 40°-80°, and it is a regular triangle. The center of the analog circle at different positions is consistent in the axial and radial directions.

[0044] The grid filling 15 is four cylindrical tubes 151 extending in all directions from the same plane at the rear end, and the angle between adjacent cylindrical tubes 151 is 90°-130°, so as to improve the lightweight structure of the grid filling 15 in the heat exchanger connection model 3 and enhance the supporting effect.

[0045] The grid diameter of the grid filling 15 in the combined energy absorption structure at the heat exchanger connection model 3 is 3-6mm, and the length is 10-20mm. The grid is evenly filled around the flow channel structure in the special-shaped air film hole 14, and four cylindrical tubes 151 are derived from the bottom facing all around, and the angle between adjacent cylindrical tubes 151 is 90°-130°.

[0046] In the combined energy absorption structure of the heat exchanger connection model 3, the irregular air film holes 14 account for 20%-60% of the model volume, and the grid accounts for 10%-50% of the model volume. The spacing between adjacent irregular air film holes 14 gradually decreases from both sides to the middle, the spacing is 10-30mm, the number of rows is 1-4 rows, and the wall thickness is 0.3-2mm.

[0047] Traditional structural optimization techniques can be divided into size optimization, shape optimization and topology optimization. The above three optimization techniques can effectively reduce the weight of the structure, but it is difficult to achieve some new functional characteristics, and due to the constraints of traditional manufacturing processes, some structures with complex internal features cannot be manufactured. In addition to basic mechanical properties, the grid structure also has special functions in terms of light weight, frequency modulation, noise reduction, wave absorption, etc. In view of this, a combined energy absorption structure of a special-shaped air film hole 14 and a grid filling 15 is used at the connection between the intercooler 1 and the radiator 2. While utilizing the flow expansion and span structure of the special-shaped air film hole 14 to improve the adhesion of the cold air to the wall and improve the heat dissipation efficiency, the grid structure is used to absorb energy, reduce vibration and reduce weight.

[0048] The two sides of the heat exchanger connection model 3 are respectively provided with connection frames 13 for connecting the intercooler 1 and the radiator 2. The connection frames 13 further enhance the support strength of the cooling module.

[0049] The heat exchanger connection model 3 is a trapezoidal structure with a large top and a small bottom. The layout structure of the overall cooling module can be made more compact, saving the occupied area. The wall thickness of the heat exchanger connection model 3 is 0.3-2mm. The front view of the energy absorption structure is a trapezoidal structure, with an upper bottom length of 500-550mm, a lower bottom length of 550-600mm, a waist length of 30-50mm, an angle between the waist and the upper bottom of 90°-130°, and an angle between the waist and the lower bottom of 50°-90°; the left view is a trapezoidal structure, with an upper bottom length of 25-45mm, a lower bottom length of 30-60mm, a waist length of 20-40mm, an angle between the waist and the upper bottom of 70°-130°, and an angle between the waist and the lower bottom of 50°-100°.

[0050] The connecting frame 13 includes 3-10 connecting round tubes 16, which are connected at the bottom and extended to the surrounding at the top. The top of some connecting round tubes 16 is connected to the intercooler 1, and the top of other connecting round tubes 16 is connected to the heat exchanger connection model 3. The diameter of the connecting round tube 16 increases gradually from bottom to top. The distribution of multiple connecting round tubes 16 is adapted to reserve space for the connecting frame 13, and the supporting strength is ensured by the variable diameter structure.

[0051] The connecting frame 13 connects the cavities on both sides of the intercooler 1 and the radiator 2 through the connecting circular tube 16 structure. The connecting circular tube 16 has a node feature, which has the effect of enhancing the bending strength of the stem, radial anti-extrusion and anti-shear. Through the variable diameter thin-walled structure from top to bottom, its bearing capacity is gradiently distributed. The joint effect of the node and the connecting circular tube 16 structure makes its mechanical properties better, the stress distribution is uniform, and its impact resistance is enhanced. The connecting circular tube 16 structure radius of the connecting frame 13 is 1-10mm, the number of connecting circular tubes 16 is 3-10, the angle between adjacent connecting circular tubes 16 is 10°-50°, the chamfer of the node structure on the connecting circular tube 16 is 1-5mm, the number of node structures on each connecting circular tube 16 is 1-6, and the connecting circular tube 16 model accounts for 40%-80% of the volume of the connecting frame 13 structure model.

[0052] Symmetrical brackets 4 are provided on both sides of the radiator 2. The structure of the bracket 4 is symmetrically distributed on the left and right relative to the axis of the cooling module; a grid model 17 is provided on the bracket 4, and the grid model 17 occupies 30%-70% of the volume of the solid model. According to the load-bearing characteristics of the grid model 17, a grid structure with dense inside and sparse outside or sparse inside and dense outside is generated, so that the material is more concentrated in the main load-bearing area of ​​the model. Therefore, the grid model 17 is arranged in a front-dense and multi-sparse arrangement, the grid diameter is 1-4mm, the angle between the round tube and the horizontal plane is 30°-80°, and the round tubes in the same axial direction are arranged in parallel; in order to ensure the overall rigidity of the bracket 4 structure, a leg-shaped support structure 18 is added to one side of the bracket 4 to effectively improve the structural load-bearing capacity. Several holes with a diameter of 1-5mm are opened on it, which can reduce the weight while meeting the force. The arc length of the leg-shaped support structure 18 is 50-80mm, and the angle is 1°-5°.

[0053] The structure thickness of the bracket 4 is 30-60mm, and an embedded dustpan hole 19 is opened on the left and right sides of the bracket 4, the hole depth is 20-30mm, the inlet area is 200-300mm2, and the bottom area is 100-150mm2. The short arc side spline curve length of the bottom dustpan hole 19 is 5-10mm, and the long arc side spline curve length is 10-20mm. The short arc side spline curve length of the inlet dustpan hole 19 is 1-5mm, and the long arc side spline curve length is 20-30mm.

[0054] Among the structural parts of commercial vehicles, the connection parts of bracket 4 parts are mostly directly connected to the frame to play a fixing role; the bracket 4 structure itself bears all the working loads, so the quality of its own structure directly affects the performance of the cooling module. Intensive design is adopted to couple the topology optimization and grid design, comprehensively consider the structural performance, take lightweight maximization as the objective function, and use volume and balance conditions as constraints to optimize the design of the continuum structure using the variable density method.

[0055] The flow path and uniformity of high-temperature fluids have a major impact on the resistance along the way. The design of the cooling system needs to ensure that the system avoids overheating and overcooling. When the type of heat exchanger and fan remains unchanged, the cavity model is changed to reduce the internal flow pressure drop, coordinate the heat exchanger heat dissipation flow, and improve the cooling module performance on a macro level. Under the premise of ensuring the heat dissipation performance, the cooling system air volume must be controlled to reduce the resistance of the cooling module, thereby reducing the internal flow resistance of the entire vehicle. In order to reduce the flow resistance of the cavities on the left and right sides of the intercooler 1 and the radiator 2, the cavity structure adopts a smooth transition spline surface with a curvature of 30°-60° and a cavity wall thickness of 1-5mm.

[0056] The cooling module is integrated through additive manufacturing technology, which reduces the use of connectors such as bolts and welding, greatly improves the integrity of the structure, extends the service life, and the uniform and dense metallographic structure enhances the temperature difference resistance of the entire material. By simplifying the connection and sealing structure, the risks caused by vibration and improper installation are reduced, the service life is effectively increased, and the design and processing costs are reduced.

[0057] The low-resistance energy-absorbing lightweight cooling module described in the present invention has an intercooler and a radiator arranged side by side on a single surface, so that the heat dissipation unit is relatively independent, the contact surface is increased, and the performance is significantly improved; the air film holes form a structure with a flow channel on the heat exchanger connection model, and the grid is filled and evenly filled on the periphery of the flow channel, which reduces the self-weight of the cooling module, forms an energy-absorbing structure, and improves the overall quality.

[0058] The cooling module structure is an integrated molding, which reduces weight, reduces the outer dimensions, and improves heat dissipation efficiency. The manufacturing process of the device adopts additive manufacturing. The additive manufacturing process is based on the digital CAD model, applies the layered manufacturing concept, extracts the molding path, and deposits the powder on the substrate in layers, with high dimensional accuracy. The two side cavities / brackets, radiators, intercoolers, etc. are integrated into a lightweight single component using additive manufacturing technology to simplify the connection and sealing structure; the rapid solidification technology is used, and the processing process is carried out under the protection of inert gas, which can obtain a uniform and dense metallographic structure that reaches or exceeds the level of forgings. More importantly, the working environment of such devices is usually poor, such as large vibration amplitude and large temperature field temperature difference. Through additive manufacturing integrated molding, welding is reduced, which will greatly improve the integrity of the structure and extend the service life. The uniform and dense metallographic structure makes the entire material more resistant to temperature differences. The manufacturing process simplifies the connection and sealing structure, reduces the risks caused by vibration and improper installation, effectively increases the service life, and reduces the design and processing costs. At the same time, it reduces weight, reduces overall dimensions, speeds up iterations, shortens design cycles, has high dimensional accuracy, and improves the overall performance of the cooling module. Reducing weight can effectively reduce material costs and fuel consumption, and enhance market competitiveness.

[0059] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0060] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A low-resistance energy-absorbing lightweight cooling module, comprising an intercooler (1) and a radiator (2), characterized in that: The intercooler (1) and the radiator (2) are connected via a heat exchanger connection model (3) and are arranged in a single-sided arrangement in a vertical direction; the heat exchanger connection model (3) comprises air film holes (14) and grid filling (15); the air film holes (14) are provided on the front and rear wall surfaces of the heat exchanger connection model (3) along the incoming flow direction, and the front and rear air film holes (14) penetrate along the flow direction to form independent internal flow channels; the grid filling (15) is distributed on the periphery of the air film holes (14) in the heat exchanger; The spacing between the holes (14) gradually decreases from the two sides to the middle; the cross-sectional area of ​​the air film holes (14) gradually increases from the two sides to the middle; 2-3 air film holes (14) on the front wall of the heat exchanger connection model (3) are correspondingly connected to one air film hole (14) on the rear wall of the heat exchanger connection model (3) to form an internal flow channel; the grid filling (15) is four cylindrical tubes (151) that are coplanar at the rear end and extend to the surroundings, and the angle between adjacent cylindrical tubes (151) is 90°-130°.

2. A low-resistance energy-absorbing lightweight cooling module according to claim 1, characterized in that: Connecting frames (13) for connecting the intercooler (1) and the radiator (2) are respectively provided on both sides of the heat exchanger connection model (3).

3. A low-resistance energy-absorbing lightweight cooling module according to claim 2, characterized in that: The heat exchanger connection model (3) is generally a trapezoidal structure with a larger top and a smaller bottom.

4. A low-resistance energy-absorbing lightweight cooling module according to claim 3, characterized in that: The connecting frame (13) comprises 3-10 connecting circular tubes (16), and the 3-10 connecting circular tubes (16) are integrally formed in a structure in which the lower ends are connected and the upper ends are extended in all directions. The upper ends of some connecting circular tubes (16) are connected to the intercooler (1), and the upper ends of other connecting circular tubes (16) are connected to the heat exchanger connection model (3); the diameters of the connecting circular tubes (16) gradually increase from bottom to top.

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