Cooling system and vehicle

Abstract

The utility model discloses a heat dissipation system and a vehicle. The heat dissipation system comprises a compressor; the first heat exchanger is provided with a refrigerant inlet and a refrigerant outlet which are communicated with each other, and the first heat exchanger is provided with a first ventilation opening; the second heat exchanger is arranged on at least one side of the first heat exchanger and makes contact with the first heat exchanger in an attached mode, the second heat exchanger is provided with a cooling liquid inlet and a cooling liquid outlet which communicate with each other, and the second heat exchanger is provided with a second ventilation opening; the fan assembly corresponds to the first ventilation opening and the second ventilation opening; and the controller is electrically connected with the compressor and the fan assembly. Therefore, the air volume can be increased through the fan assembly, the cooling effect on the cooling liquid is improved, and the cooling effect on the cooling liquid can be selectively achieved through the first heat exchanger, so that the heat dissipation capacity of the heat dissipation system can be improved, and the heat dissipation system can adapt to various working conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a heat dissipation system and a vehicle. Background Art

[0002] The automotive cooling system is the core of the engine cooling module. The cooling capacity determines the vehicle driving environment and vehicle positioning. Nowadays, off-road vehicles are becoming more and more demanding in terms of cooling.

[0003] In the relevant technology, the condenser is the core component of the vehicle cooling system. The condenser relies on air volume to dissipate heat. Both the electronic fan cooling system and the silicone oil fan cooling system have disadvantages and cannot meet the needs of off-road vehicle users. Under special working conditions, the heat dissipation of the whole vehicle is insufficient, and the engine water temperature will overheat. When the engine water temperature exceeds 115℃, the engine self-protection function will be activated. At this time, the engine will lose most of its power, seriously affecting driving safety and driving experience. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a heat dissipation system, which can adapt to a variety of working conditions and has better heat dissipation capacity.

[0005] Another object of the present invention is to provide a vehicle.

[0006] According to the heat dissipation system of the embodiment of the utility model, it includes: a compressor; a first heat exchanger, the first heat exchanger has a refrigerant inlet and a refrigerant outlet that are interconnected, the refrigerant inlet and the refrigerant outlet are respectively connected to the compressor, and the first heat exchanger is provided with a first vent; a second heat exchanger, the second heat exchanger is arranged on at least one side of the first heat exchanger and is in close contact with the first heat exchanger, the second heat exchanger is provided with a coolant inlet and a coolant outlet that are interconnected, the coolant inlet and the coolant outlet are suitable for being connected to a vehicle engine, the second heat exchanger is provided with a second vent, and the second vent is connected to the first vent in a front-to-rear direction; a fan assembly, the fan assembly corresponds to the first vent and the second vent; a controller, the controller is electrically connected to the compressor and the fan assembly, respectively.

[0007] Therefore, by making the second heat exchanger and the first heat exchanger fit and contact with each other, and making the fan assembly correspond to the first vent and the second vent, not only can the air volume be increased by the fan assembly to improve the cooling effect of the coolant in the second heat exchanger, but the first heat exchanger can also be used to selectively cool the coolant in the second heat exchanger, thereby improving the heat dissipation capacity of the cooling system, making the cooling system adaptable to a variety of working conditions, keeping the engine water temperature at an optimal constant temperature, and improving the driving safety and driving experience of the vehicle.

[0008] In some examples of the present invention, there are two second heat exchangers and they are respectively arranged on the front and rear sides of the first heat exchanger, the two second heat exchangers are respectively in contact with the front and rear sides of the first heat exchanger, the two second heat exchangers are connected to each other, and the coolant inlet and the coolant outlet are arranged on one of the two second heat exchangers.

[0009] In some examples of the present invention, the first heat exchanger includes a first input pipe, a first output pipe and a first heat exchange element, the refrigerant inlet is arranged on the first input pipe, the refrigerant outlet is arranged on the first output pipe, the first input pipe and the first output pipe are arranged at intervals in the left and right directions, the first heat exchange element is connected between the first input pipe and the first output pipe, and the first vent is arranged on the first heat exchange element.

[0010] In some examples of the present invention, the second heat exchanger includes a second input pipe, a second output pipe and a second heat exchange element, the coolant inlet is arranged on the second input pipe, the coolant outlet is arranged on the second output pipe, the second input pipe and the second output pipe are arranged at intervals in the left and right directions, the second heat exchange element is connected between the second input pipe and the second output pipe, the first heat exchange element and the second heat exchange element are in contact with each other for heat exchange, and the second vent is arranged on the second heat exchange element.

[0011] In some examples of the present invention, the first heat exchange member and the second heat exchange member both include flat tubes and heat exchange fins, the flat tubes of the first heat exchange member are connected between the first input pipeline and the first output pipeline, the flat tubes of the second heat exchange member are connected between the second input pipeline and the second output pipeline, the heat exchange fins of the first heat exchange member are arranged on the flat tubes of the first heat exchange member and form the first vents, the heat exchange fins of the second heat exchange member are arranged on the flat tubes of the second heat exchange member and form the second vents, and the heat exchange fins of the first heat exchange member and the heat exchange fins of the second heat exchange member are in close contact with each other.

[0012] In some examples of the present invention, there are a plurality of flat tubes, the plurality of flat tubes are spaced apart in the vertical direction, a heat exchange fin is disposed between two adjacent flat tubes, and the heat exchange fin is wavy.

[0013] In some examples of the present invention, a switch valve is provided at a position of the first heat exchanger corresponding to the refrigerant inlet, and the switch valve is electrically connected to the controller.

[0014] In some examples of the present invention, the heat dissipation system further includes: a first temperature sensor, the first temperature sensor is electrically connected to the controller, and the first temperature sensor is suitable for detecting the temperature of the engine water pipe.

[0015] In some examples of the present invention, the heat dissipation system further includes: a second temperature sensor, which is disposed at the refrigerant outlet and electrically connected to the controller, and the second temperature sensor is suitable for detecting the temperature of the refrigerant.

[0016] The vehicle according to the embodiment of the utility model may include: the heat dissipation system described above.

[0017] In this way, the cooling system can adapt to various working conditions without affecting the original cooling structure and intelligently share the cooling pressure. By applying the cooling system to the vehicle, it can improve the vehicle's driving performance and driving safety, improve the user experience, and enhance the vehicle's product competitiveness.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 Schematic diagram of a heat dissipation system according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] 100. Cooling system;

[0023] 10. first heat exchanger; 11. first input pipeline; 111. refrigerant inlet; 12. first output pipeline; 121. refrigerant outlet; 13. first heat exchange element; 14. switch valve; 15. second temperature sensor;

[0024] 20. Second heat exchanger; 21. Second input pipeline; 211. Coolant inlet; 22. Second output pipeline; 221. Coolant outlet; 23. Second heat exchange element; 231. Flat tube; 232. Heat exchange fin; 233. Second vent. DETAILED DESCRIPTION

[0025] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0026] Reference below Figure 1 A heat dissipation system 100 according to an embodiment of the present invention is described. The heat dissipation system 100 can be applied to a vehicle.

[0027] Combination Figure 1 As shown, the heat dissipation system 100 according to the present invention may mainly include: a compressor, a first heat exchanger 10, a second heat exchanger 20, a fan assembly and a controller.

[0028] Among them, the first heat exchanger 10 has a refrigerant inlet 111 and a refrigerant outlet 121 that are interconnected, and the refrigerant inlet 111 and the refrigerant outlet 121 are respectively connected to the compressor. The first heat exchanger 10 is provided with a first vent, and a second heat exchanger 20. The second heat exchanger 20 is arranged on at least one side of the first heat exchanger 10 and is in close contact with the first heat exchanger 10. The second heat exchanger 20 is provided with a coolant inlet 211 and a coolant outlet 221 that are interconnected. The coolant inlet 211 and the coolant outlet 221 are suitable for being connected to the vehicle engine. The second heat exchanger 20 is provided with a second vent 233, and the second vent 233 is connected to the first vent in the front-to-back direction. The fan assembly corresponds to the first vent and the second vent 233, and the controller is electrically connected to the compressor and the fan assembly, respectively.

[0029] Specifically, the coolant inlet 211 and the coolant outlet 221 are connected to each other in the second heat exchanger 20, and the coolant inlet 211 and the coolant outlet 221 are suitable for being connected to the vehicle engine, so that the coolant can flow between the second heat exchanger 20 and the engine. Specifically, the low-temperature coolant enters the engine from the coolant outlet 221, exchanges heat with the engine, and cools the engine. After exchanging heat with the engine, the coolant is converted into a high-temperature coolant. The high-temperature coolant enters the second heat exchanger 20 through the coolant inlet 211, and exchanges heat with the outside wind in the second heat exchanger 20, so that the high-temperature coolant is converted into a low-temperature coolant again, so that it can enter the engine again to play a cooling role.

[0030] Furthermore, by setting a first vent on the first heat exchanger 10, the fan assembly corresponds to the first vent, and the fan assembly is electrically connected to the controller. The controller can control the operation of the fan assembly, and the fan assembly can speed up the speed of air flowing through the second heat exchanger 20, thereby improving the heat exchange efficiency of the second heat exchanger 20 and enhancing the heat dissipation performance of the heat dissipation system 100.

[0031] In this way, through the operation of the second heat exchanger 20, the fan assembly and the controller, the engine can be continuously cooled down to ensure the working performance of the engine. The temperature of the coolant in the engine is defined as the engine water temperature.

[0032] It is understandable that in order to avoid the problem of insufficient engine heat dissipation, which leads to serious power attenuation of the engine exceeding the limit, the heat dissipation capacity of the heat dissipation system 100 needs to be improved. When the size of the heat dissipation system 100 is constrained by the size of the vehicle body and cannot be changed, the heat dissipation capacity of the second heat exchanger 20 is mainly determined by the external wind volume. For example, the speed of the fan assembly can be increased through the controller to maintain the engine water temperature at the best state. However, this cannot adapt to the heat dissipation requirements of various working conditions. In order to further improve the heat dissipation capacity, whether an electronic fan or a silicone oil fan is used, it requires a larger fan volume and installation space, and the cost is higher. In addition, it cannot adapt to various driving environments of the vehicle, such as off-road conditions, desert conditions, etc.

[0033] By making the heat dissipation system 100 also include a compressor and a first heat exchanger 10, the second heat exchanger 20 is arranged on at least one side of the first heat exchanger 10 and is in close contact with the first heat exchanger 10. The controller can control the operation of the compressor to make the refrigerant circulate between the compressor and the first heat exchanger 10 to achieve cooling of the coolant.

[0034] Specifically, the high-temperature and high-pressure refrigerant flowing out of the compressor forms a low-temperature and low-pressure refrigerant after passing through the condenser and the throttling device of the air-conditioning system. The low-temperature and low-pressure refrigerant enters the first heat exchanger 10 through the refrigerant inlet 111. During the flow of the low-temperature and low-pressure refrigerant inside the first heat exchanger 10, it can exchange heat with the coolant in the second heat exchanger 20 to achieve cooling of the coolant in the second heat exchanger 20, and the refrigerant after heat exchange can return to the compressor.

[0035] In this way, by arranging the second heat exchanger 20 on at least one side of the first heat exchanger 10, and making the second heat exchanger 20 and the first heat exchanger 10 fit in contact with each other, the first heat exchanger 10 can selectively assist the heat exchange of the second heat exchanger 20, and can cool the coolant in the second heat exchanger 20, thereby improving the heat dissipation capacity of the cooling system 100, and making the cooling system 100 adapt to various working conditions such as off-road and desert conditions where high-speed and high-load operation of the fan is prohibited, and the speed of the fan assembly cannot maintain cooling, thereby ensuring that the engine water temperature is maintained at an optimal constant temperature, avoiding serious power attenuation caused by the engine water temperature exceeding the limit, and improving the driving safety and driving experience of the vehicle.

[0036] It should be noted that a second vent 233 is also provided in the second heat exchanger 20, and the second vent 233 is connected to the first vent in the front-to-back direction, and the fan assembly also corresponds to the second vent 233, so that the wind can flow from one side to the other side in the front-to-back direction of the cooling system 100, thereby ensuring the heat exchange efficiency between the wind and the second heat exchanger 20 and ensuring the heat dissipation capacity of the cooling system 100.

[0037] Therefore, by making the second heat exchanger 20 and the first heat exchanger 10 fit and contact each other, and making the fan assembly correspond to the first vent and the second vent 233, not only can the air volume be increased by the fan assembly, thereby improving the cooling effect of the coolant in the second heat exchanger 20, but also the first heat exchanger 10 can selectively cool the coolant in the second heat exchanger 20, thereby improving the heat dissipation capacity of the heat dissipation system 100, making the heat dissipation system 100 adaptable to a variety of working conditions, keeping the engine water temperature at an optimal constant temperature, and improving the driving safety and driving experience of the vehicle.

[0038] Combination Figure 1 As shown, there are two second heat exchangers 20 and they are respectively arranged on the front and rear sides of the first heat exchanger 10. The two second heat exchangers 20 are respectively in contact with the front and rear sides of the first heat exchanger 10. The two second heat exchangers 20 are connected to each other, and one of the two second heat exchangers 20 is provided with a coolant inlet 211 and a coolant outlet 221.

[0039] Specifically, by providing two second heat exchangers 20, and respectively arranging the two second heat exchangers 20 on the front and rear sides of the first heat exchanger 10, the two second heat exchangers 20 are respectively arranged in close contact with the front and rear sides of the first heat exchanger 10, so that the coolant in the two second heat exchangers 20 can exchange heat with the refrigerant in the first heat exchanger 10, thereby making full use of the cooling capacity of the refrigerant in the first heat exchanger 10, avoiding energy waste, and further improving the overall heat dissipation capacity of the heat dissipation system 100 to ensure the constant water temperature of the engine.

[0040] Combination Figure 1 As shown, the first heat exchanger 10 may include a first input pipe 11, a first output pipe 12 and a first heat exchange element 13, the refrigerant inlet 111 is arranged on the first input pipe 11, the refrigerant outlet 121 is arranged on the first output pipe 12, the first input pipe 11 and the first output pipe 12 are arranged at intervals in the left and right directions, the first heat exchange element 13 is connected between the first input pipe 11 and the first output pipe 12, and the first vent is arranged on the first heat exchange element 13.

[0041] In this way, on the one hand, the refrigerant can enter the first heat exchanger 13 through the first input pipe 11, then exchange heat with the second heat exchanger 20 in the first heat exchanger 13, and then flow out through the first output pipe 12, thereby limiting the flow path of the refrigerant in the first heat exchanger 10. On the other hand, the fan assembly can introduce wind into the first vent and the second vent to avoid affecting the heat exchange between the second heat exchanger 23 and the external wind.

[0042] Combination Figure 1 As shown, the second heat exchanger 20 may include a second input pipe 21, a second output pipe 22 and a second heat exchange element 23, the coolant inlet 211 is arranged on the second input pipe 21, the coolant outlet 221 is arranged on the second output pipe 22, the second input pipe 21 and the second output pipe 22 are arranged at intervals in the left and right directions, the second heat exchange element 23 is connected between the second input pipe 21 and the second output pipe 22, the first heat exchange element 13 and the second heat exchange element 23 are in contact with each other for heat exchange, and the second vent 233 is arranged on the second heat exchange element 23.

[0043] In this way, on the one hand, the coolant can enter the second heat exchange element 23 through the second input pipe 21, then exchange heat with the first heat exchange element 13 in the second heat exchange element 23, and then flow out through the second output pipe 22, which can limit the flow path of the coolant in the second heat exchanger 20, ensure the heat exchange efficiency between the coolant and the refrigerant, and improve the heat dissipation capacity of the heat dissipation system 100. On the other hand, the fan assembly can introduce wind into the second vent 233 to ensure heat exchange between the wind and the coolant in the second heat exchange element 23.

[0044] Combination Figure 1As shown, the first heat exchanger 13 and the second heat exchanger 23 may both include a flat tube 231 and a heat exchange sheet 232. The flat tube 231 of the first heat exchanger 13 is connected between the first input pipeline 11 and the first output pipeline 12, and the flat tube 231 of the second heat exchanger 23 is connected between the second input pipeline 21 and the second output pipeline 22. The heat exchange sheet 232 of the first heat exchanger 13 is arranged on the flat tube 231 of the first heat exchanger 13 and forms a first vent. The heat exchange sheet 232 of the second heat exchanger 23 is arranged on the flat tube 231 of the second heat exchanger 23 and forms a second vent. The heat exchange sheet 232 of the first heat exchanger 13 and the heat exchange sheet 232 of the second heat exchanger 23 are in contact with each other.

[0045] Specifically, the coolant or refrigerant circulates in the flat tube 231, and the heat exchange plate 232 is arranged on the flat tube 231. Specifically, the heat exchange plate 232 of the first heat exchange element 13 is arranged on the flat tube 231 of the first heat exchange element 13 and a first vent is formed, and the heat exchange plate 232 of the second heat exchange element 23 is arranged on the flat tube 231 of the second heat exchange element 23 and a second vent 233 is formed. In this way, the heat exchange area of ​​the first heat exchange element 13 and the second heat exchange element 23 can be increased, thereby increasing the heat exchange efficiency between the first heat exchange element 13 and the second heat exchange element 23 and the wind respectively, thereby improving the heat dissipation capacity of the heat dissipation system 100.

[0046] Furthermore, since the first heat exchange element 13 and the second heat exchange element 23 are in close contact in the front-to-back direction, by making the heat exchange plates 232 of the first heat exchange element 13 and the heat exchange plates 232 of the second heat exchange element 23 in close contact with each other, normal heat exchange between the first heat exchange element 13 and the second heat exchange element 23 can be ensured, the heat exchange efficiency between the first heat exchange element 13 and the second heat exchange element 23 can be increased, and the heat dissipation capacity of the heat dissipation system 100 can be ensured.

[0047] Furthermore, combined with Figure 1 As shown, there are multiple flat tubes 231, and the multiple flat tubes 231 are arranged at intervals in the vertical direction. A heat exchange plate 232 is arranged between two adjacent flat tubes 231, and the heat exchange plate 232 is wavy. In this arrangement, the wind can flow through the gap between the adjacent flat tubes 231 and exchange heat with the wavy heat exchange plate 232, which can further increase the contact area between the heat exchange plate 232 and the wind, thereby increasing the heat exchange efficiency between the heat exchange plate 232 and the wind, and can achieve uniform heat exchange of water or refrigerant in each flat tube 231, thereby further improving the heat dissipation capacity of the heat dissipation system 100.

[0048] Combination Figure 1 As shown, a switch valve 14 is provided at a position of the first heat exchanger 10 corresponding to the refrigerant inlet 111 , and the switch valve 14 is electrically connected to the controller.

[0049] Specifically, by electrically connecting the controller to the switch valve 14, the controller can not only control the opening and closing of the switch valve 14, but also control the opening degree of the switch valve 14. In this way, according to actual needs, for example: in special working conditions such as off-road and desert, or when the second heat exchanger 20 cannot maintain the cooling of the engine, the opening degree of the switch valve 14 can be selectively controlled, and the intervention depth of the first heat exchanger 10 can be controlled, thereby improving the precise heat dissipation of the engine by the cooling system 100, which can not only ensure the constant temperature of the engine and the working performance of the engine, but also avoid excessive waste of energy of the cooling system 100, thereby optimizing the structural design of the cooling system 100, improving the working performance of the cooling system 100, and making the cooling system 100 more intelligent and controllable.

[0050] Furthermore, the heat dissipation system 100 may also include: a first temperature sensor, the first temperature sensor is electrically connected to the controller, and the first temperature sensor is suitable for detecting the temperature of the engine water pipe. Specifically, by setting the first temperature sensor, the first temperature sensor can detect the temperature of the engine water pipe in real time, that is, it can detect the engine water temperature in real time, and send the engine water temperature to the controller, the controller can determine whether the engine water temperature is normal, and control the operation of the first heat exchanger 10 and the fan assembly according to the determination result, so that the heat dissipation system 100 can be more intelligent and controllable.

[0051] Combination Figure 1 As shown, the heat dissipation system 100 may further include: a second temperature sensor 15, which is disposed at the refrigerant outlet 121 and is electrically connected to the controller, and the second temperature sensor 15 is suitable for detecting the temperature of the refrigerant. In this way, the second temperature sensor 15 can detect the temperature of the refrigerant flowing out of the first heat exchanger 10 in real time, and send the temperature data of the refrigerant flowing out of the first heat exchanger 10 to the controller, and the controller can adjust the speed of the fan assembly according to the received temperature data, so that the heat dissipation system 100 can be more intelligent and controllable.

[0052] As described above, by making the heat dissipation system 100 include: a compressor, a first heat exchanger 10, a second heat exchanger 20, a controller, a switch valve 14, a first temperature sensor, a second temperature sensor 15 and a fan assembly, the heat dissipation system 100 can adapt to various working conditions and intelligently share the heat dissipation pressure without affecting the original heat dissipation structure.

[0053] When the vehicle is in normal operating conditions and the engine water temperature is too high, the controller can increase the speed of the fan assembly to maintain the engine water temperature at the optimal state.

[0054] When the vehicle is in extreme operating conditions and the fan assembly can no longer meet the cooling needs of the vehicle, the controller controls the compressor and the first heat exchanger 10 to work, thereby assisting the second heat exchanger 20 in dissipating heat and maintaining the engine water temperature at an optimal state.

[0055] When the vehicle is in special working conditions, such as in the desert where high-speed and high-load operation of the fan is prohibited, the controller can adjust the working mode of the cooling system 100 according to the driving mode of the vehicle, control the intervention depth of the first heat exchanger 10, and maintain the engine water temperature at the optimal state.

[0056] The vehicle according to the present invention may mainly include: the above-mentioned heat dissipation system 100, which can improve the driving performance and driving safety of the vehicle, improve the user experience, and improve the product competitiveness of the vehicle.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat dissipation system, characterized in that: include: compressor; a first heat exchanger (10), the first heat exchanger (10) having a refrigerant inlet (111) and a refrigerant outlet (121) which are in communication with each other, the refrigerant inlet (111) and the refrigerant outlet (121) being respectively in communication with the compressor, and the first heat exchanger (10) being provided with a first vent; a second heat exchanger (20), the second heat exchanger (20) being arranged on at least one side of the first heat exchanger (10) and being in close contact with the first heat exchanger (10), the second heat exchanger (20) being provided with a coolant inlet (211) and a coolant outlet (221) which are in communication with each other, the coolant inlet (211) and the coolant outlet (221) being suitable for being in communication with a vehicle engine, the second heat exchanger (20) being provided with a second vent (233), the second vent (233) being in communication with the first vent in a front-rear direction; a fan assembly, the fan assembly corresponding to the first vent and the second vent (233); A controller is electrically connected to the compressor and the fan assembly respectively.

2. The heat dissipation system according to claim 1, characterized in that: There are two second heat exchangers (20) and they are respectively arranged on the front and rear sides of the first heat exchanger (10); the two second heat exchangers (20) are respectively in close contact with the front and rear sides of the first heat exchanger (10); the two second heat exchangers (20) are interconnected; and one of the two second heat exchangers (20) is provided with the coolant inlet (211) and the coolant outlet (221).

3. The heat dissipation system according to claim 2, characterized in that: The first heat exchanger (10) comprises a first input pipe (11), a first output pipe (12) and a first heat exchange element (13); the refrigerant inlet (111) is arranged on the first input pipe (11); the refrigerant outlet (121) is arranged on the first output pipe (12); the first input pipe (11) and the first output pipe (12) are arranged with a spacing in the left-right direction; the first heat exchange element (13) is connected between the first input pipe (11) and the first output pipe (12); and the first vent is arranged on the first heat exchange element (13).

4. The heat dissipation system according to claim 3, characterized in that: The second heat exchanger (20) comprises a second input pipe (21), a second output pipe (22) and a second heat exchange element (23); the coolant inlet (211) is arranged on the second input pipe (21); the coolant outlet (221) is arranged on the second output pipe (22); the second input pipe (21) and the second output pipe (22) are arranged at intervals in the left-right direction; the second heat exchange element (23) is connected between the second input pipe (21) and the second output pipe (22); the first heat exchange element (13) and the second heat exchange element (23) are in contact with each other for heat exchange; and the second vent (233) is arranged on the second heat exchange element (23).

5. The heat dissipation system according to claim 4, characterized in that: The first heat exchange element (13) and the second heat exchange element (23) both comprise a flat tube (231) and a heat exchange fin (232); the flat tube (231) of the first heat exchange element (13) is connected between the first input pipeline (11) and the first output pipeline (12); the flat tube (231) of the second heat exchange element (23) is connected between the second input pipeline (21) and the second output pipeline (22); the heat exchange fin (232) of the first heat exchange element (13) is arranged on the flat tube (231) of the first heat exchange element (13) and is formed with the first ventilation opening; the heat exchange fin (232) of the second heat exchange element (23) is arranged on the flat tube (231) of the second heat exchange element (23) and is formed with the second ventilation opening (233); the heat exchange fin (232) of the first heat exchange element (13) and the heat exchange fin (232) of the second heat exchange element (23) are in close contact with each other.

6. The heat dissipation system according to claim 5, characterized in that: There are a plurality of flat tubes (231), and the plurality of flat tubes (231) are arranged at intervals in the up-down direction. A heat exchange fin (232) is arranged between two adjacent flat tubes (231), and the heat exchange fin (232) is wavy.

7. The heat dissipation system according to claim 1, characterized in that: The first heat exchanger (10) is provided with an on-off valve (14) at a position corresponding to the refrigerant inlet (111), and the on-off valve (14) is electrically connected to the controller.

8. The heat dissipation system according to claim 1, characterized in that: Also includes: A first temperature sensor is electrically connected to the controller and is suitable for detecting the temperature of an engine water pipe.

9. The heat dissipation system according to claim 1, characterized in that: Also includes: A second temperature sensor (15), the second temperature sensor (15) is arranged at the refrigerant outlet (121) and is electrically connected to the controller, and the second temperature sensor (15) is suitable for detecting the temperature of the refrigerant.

10. A vehicle, characterized in that: include: The heat dissipation system (100) according to any one of claims 1 to 9.

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