Engine hood assembly and vehicle

Abstract

The invention relates to an engine hood assembly and a vehicle, the engine hood assembly is provided with a cooling cavity, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are communicated with the cooling cavity, and the cooling cavity is used for cooling cooling liquid passing through an electric driving system. According to the design, the radiator of the electric driving system is integrated in the engine hood assembly, so that cooling liquid with the temperature increased after passing through the electric driving system flows into the cooling cavity through the liquid inlet, and heat of the cooling liquid is transmitted to the outer surface of the engine hood assembly from the inner surface of the engine hood assembly; the heat is taken away by the air flow flowing through the outer surface of the engine hood assembly, so that the temperature of the cooling liquid in the cooling cavity is reduced, and the cooled cooling liquid flows out of the cooling cavity through the liquid outlet; the air flow generated when a vehicle runs can be fully utilized for cooling the cooling liquid with the high temperature, the cooling requirement of an electric drive system is met, meanwhile, the number of radiators behind a front bumper can be reduced, and the energy consumption and development cost of the whole vehicle are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicles, and particularly relates to an engine hood assembly and a vehicle. Background Art

[0002] With the development of the vehicle towards the trends of electrification and intelligence, there are more and more systems and components that need to be cooled on the vehicle, and the integration degree of the vehicle thermal management architecture is also getting higher and higher.

[0003] Currently, the vehicle radiator is mainly arranged behind the front bumper. Usually, an intake grille is designed in the high-pressure airflow area of the front bumper, and the cooling fan is relied on to suck the air in front of the vehicle during driving to cool the radiator. When the vehicle's heat dissipation demand increases, the number of radiators increases and the number of arranged layers increases, resulting in an increase in intake resistance and thus a decrease in cooling efficiency; moreover, the opening design of the intake grille needs to achieve a balance between the aesthetic appearance and the heat dissipation demand. With the development of the vehicle electrification trend, the opening area of the intake grille has a tendency to become smaller in terms of styling, thus restricting the intake air volume flowing through the radiator and resulting in a decrease in cooling efficiency. In order to meet the vehicle's overall cooling performance, existing vehicles usually adopt high-power cooling fans, which leads to an increase in the vehicle's overall energy consumption and development cost. Summary of the Invention

[0004] The present invention provides an engine hood assembly and a vehicle to achieve reducing the vehicle's overall energy consumption while meeting the cooling demand.

[0005] An embodiment of the present invention provides an engine hood assembly, including a cooling cavity, a liquid inlet and a liquid outlet communicated with the cooling cavity are provided on the engine hood assembly, and the cooling cavity is used for cooling the coolant passing through the electric drive system.

[0006] Optionally, the engine hood assembly includes an engine hood and a cover plate. The engine hood covers the cover plate to form the cooling cavity therebetween; the liquid inlet and the liquid outlet are provided on the cover plate.

[0007] Optionally, a first annular structure is provided on the inner side of the engine hood;

[0008] The cover plate includes a cover plate body and a second annular structure provided on the cover plate body;

[0009] The first annular structure and the second annular structure are sealingly matched to form the cooling cavity.

[0010] Optionally, the first annular structure includes an annular installation groove;

[0011] The second annular structure includes an annular border extending from the edge of the cover plate body, and the annular border is sealingly matched with the annular installation groove.

[0012] Optionally, the bottom surface of the cover plate does not protrude from the bottom surface of the engine hood.

[0013] Optionally, the cooling cavity is a flat cavity.

[0014] Optionally, the engine hood assembly further includes at least one partition plate, which is arranged in the cooling cavity to divide the cooling cavity into at least two chambers; a communication channel is provided on the partition plate for communicating adjacent two chambers; the liquid inlet is communicated with one chamber, and the liquid outlet is communicated with another chamber.

[0015] Optionally, at least two partition plates are arranged in the cooling cavity to divide the cooling cavity into at least three chambers;

[0016] The liquid inlet is connected to the first chamber, and the liquid outlet is connected to the last chamber;

[0017] The communication channels on adjacent two partition plates are arranged in a staggered manner.

[0018] Optionally, the communication channel on the partition plate closest to the liquid inlet is located at one end of the partition plate away from the liquid inlet hole;

[0019] The communication channel on the partition plate closest to the liquid outlet is located at one end of the partition plate away from the liquid outlet hole.

[0020] Optionally, the partition plate includes a longitudinal partition plate arranged in the vertical direction, and the longitudinal partition plate divides the cooling cavity in the horizontal direction to form at least two chambers.

[0021] Optionally, the liquid inlet and the liquid outlet are located at the rear side of the cooling cavity;

[0022] The longitudinal partition plate is arranged in the cooling cavity along the vehicle length direction to divide the cooling cavity in the vehicle width direction to form at least two chambers.

[0023] The present invention also provides a vehicle, including the engine hood assembly described in any one of the foregoing technical solutions.

[0024] In the above-mentioned engine hood assembly and vehicle, a cooling cavity is provided on the engine hood assembly, as well as a liquid inlet and a liquid outlet communicating with the cooling cavity, so that the coolant whose temperature has risen after passing through the electric drive system flows into the cooling cavity through the liquid inlet, and the heat of the coolant is transferred from the inner surface of the engine hood assembly to the outer surface of the engine hood assembly, and then the heat is carried away by the airflow flowing through the outer surface of the engine hood assembly, thereby reducing the temperature of the coolant in the cooling cavity, enabling the coolant with reduced temperature to flow out of the cooling cavity through the liquid outlet, and then entering the cooling cycle of the electric drive system again; with such a design, the radiator of the electric drive system is integrated in the engine hood assembly, so that the airflow during vehicle driving can be fully utilized to cool the relatively high-temperature coolant, meeting the cooling requirements of the electric drive system. At the same time, the number of radiators behind the front bumper can be reduced, which can optimize the layout space of the front engine compartment, reduce the intake resistance, improve the cooling efficiency, and thus a small-power cooling fan can be selected, reducing the energy consumption and development cost of the whole vehicle. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of an engine hood assembly provided by an embodiment of the present invention.

[0026] In the figure: 1. Engine hood; 2. Cover plate; 21. Cover plate body; 22. Annular edge; 3. Liquid inlet; 4. Liquid outlet; 5. Partition board; 6. Communication channel. Detailed Embodiments

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0030] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0031] As Figure 1 shown, the engine hood assembly provided by the embodiment of the present invention is provided with a cooling cavity, a liquid inlet 3 and a liquid outlet 4 communicating with the cooling cavity on the engine hood assembly, and the cooling cavity is used for cooling the coolant passing through the electric drive system.

[0032] In this embodiment, a cooling cavity, as well as a liquid inlet 3 and a liquid outlet 4 communicating with the cooling cavity, are provided on the engine hood assembly, so that the coolant with a higher temperature after passing through the electric drive system flows into the cooling cavity through the liquid inlet 3, and the heat of the coolant is transferred from the inner surface of the engine hood assembly to the outer surface of the engine hood assembly, and then the heat is taken away by the air flow flowing through the outer surface of the engine hood assembly, thereby reducing the temperature of the coolant in the cooling cavity, so that the coolant with a reduced temperature flows out of the cooling cavity through the liquid outlet 4 to enter the cooling cycle of the electric drive system again. With such a design, the radiator of the electric drive system is integrated in the engine hood assembly, so that the air flow on the outer surface of the engine hood assembly during vehicle driving can be fully utilized to cool the coolant with a higher temperature, meeting the cooling requirements of the electric drive system. At the same time, the number of radiators behind the front bumper can be reduced, which can optimize the layout space of the front engine compartment, reduce the intake resistance, improve the cooling efficiency, and thus a small-power cooling fan can be selected, reducing the energy consumption and development cost of the whole vehicle.

[0033] In one embodiment, as Figure 1 shown, the engine hood assembly includes an engine hood 1 and a cover plate 2, and the engine hood 1 covers the cover plate 2 to form a cooling cavity therebetween; the cover plate 2 is provided with a liquid inlet 3 and a liquid outlet 4.

[0034] In this example, along the up-and-down direction of the vehicle, the engine hood 1 covers the cover plate 2, specifically, the cover plate 2 is arranged inside the engine hood 1 to form a cooling cavity therebetween; with such a design, arranging the cooling cavity inside the engine hood 1 not only realizes the cooling and temperature reduction of the electric drive system, but also does not damage the original shape of the engine hood 1.

[0035] Preferably, the engine hood 1 and the cover plate 2 are fixedly connected by welding; the engine hood 1 and the cover plate 2 are fixedly connected by welding, which is simple in operation, ensures the firmness and sealing performance of the connection between the engine hood 1 and the cover plate 2, and avoids leakage.

[0036] Preferably, the engine hood 1 and the cover plate 2 are integrally formed. Such a design ensures the overall integrity of the engine hood 1 and the cover plate 2, improves the sealing performance of the cooling chamber, avoids leakage, and makes the processing simpler and more convenient.

[0037] In one embodiment, the engine hood 1 is made of a metal material with a relatively high thermal conductivity, which can enhance the heat transfer efficiency and improve the cooling efficiency. Preferably, the engine hood 1 is made of aluminum alloy.

[0038] In one embodiment, as Figure 1 shown, a first annular structure is provided on the inner side of the engine hood 1, and the cover plate 2 includes a cover plate body 21 and a second annular structure provided on the cover plate body 21; the first annular structure and the second annular structure are sealingly fitted to form a cooling chamber.

[0039] In this example, the first annular structure on the engine hood 1 and the second annular structure on the cover plate 2 are sealingly fitted, so that a cooling chamber is formed between the engine hood 1 and the cover plate 2. Such a design has a simple structure, is convenient for installation, and is also beneficial to ensuring the sealing performance of the cooling chamber and avoiding leakage.

[0040] In one embodiment, as Figure 1 shown, the first annular structure includes an annular installation groove; the second annular structure includes an annular flange 22 extending from the edge of the cover plate body 21, and the annular flange 22 is sealingly fitted with the annular installation groove.

[0041] In this example, the annular flange 22 and the annular installation groove are sealingly fitted, so that the cover plate body 21, the annular flange 22 and the inner wall of the annular installation groove enclose to form a cooling chamber. Such a design has a simple structure, is convenient for installation, and also makes the overall structure of the engine hood assembly more compact, avoiding affecting the normal use of the engine hood 1.

[0042] In addition, the second annular structure may further include an annular protrusion provided in the middle of the cover plate body 21, and the annular protrusion is sealingly fitted with the annular installation groove, so that the cover plate body 21, the annular protrusion and the inner wall of the annular installation groove enclose to form a cooling chamber.

[0043] In one embodiment, the bottom surface of the cover plate 2 does not protrude beyond the bottom surface of the engine hood 1.

[0044] In this example, the bottom surface of the cover plate 2 does not protrude beyond the bottom surface of the engine hood 1, that is, the bottom surface of the cover plate 2 is flush with the bottom surface of the engine hood 1, or the bottom surface of the engine hood 1 protrudes beyond the bottom surface of the cover plate 2. That is to say, the thickness of the cooling chamber does not exceed the maximum thickness of the engine hood 1. Such a design minimizes the impact of the cooling chamber on the appearance and use of the engine hood 1 as much as possible and ensures the normal use of the engine hood 1.

[0045] In one embodiment, as Figure 1As shown, the cooling cavity is a flat cavity; with this design, the contact area between the cooling cavity and the air flow is increased as much as possible, the heat dissipation efficiency is enhanced, and the cooling effect on the coolant is improved to meet the cooling requirements of the electric drive system.

[0046] In one embodiment, as Figure 1 shown, the corners of the inner wall of the cooling cavity are connected by arc transitions; with this design, the inner wall of the cooling cavity has a smooth transition everywhere, which is convenient for the flow of the coolant.

[0047] In one embodiment, as Figure 1 shown, the engine hood assembly further includes at least one partition 5, and the partition 5 is arranged in the cooling cavity to divide the cooling cavity into at least two chambers. A communication channel 6 is provided on the partition 5 for communicating adjacent two chambers; the liquid inlet 3 is communicated with one chamber, and the liquid outlet 4 is communicated with another chamber.

[0048] In this example, at least one partition 5 is arranged in the cooling cavity to divide the cooling cavity into at least two chambers, and adjacent two chambers are communicated through the communication channel 6 on the partition 5; with this design, the flow path of the coolant in the cooling cavity is lengthened, so as to extend the heat exchange time between the coolant and the air flow, enabling more heat in the coolant to be carried away by the air flow, and improving the cooling effect.

[0049] In one embodiment, as Figure 1 shown, the communication channel 6 is a through hole or a notch provided on the partition 5, and the four side edges of the partition 5 are all connected to the inner wall of the cooling cavity.

[0050] In this example, the four side edges of the partition 5 are all connected to the inner wall of the cooling cavity, and a communication channel 6 is provided on the partition 5, so that the chambers on both sides of the partition 5 are communicated through the communication channel 6. With this design, the structure is simple and convenient for installation.

[0051] In another embodiment, the communication channel 6 is a communication opening formed by spacing one side edge of the partition 5 from the inner wall of the cooling cavity, and the remaining three side edges of the partition 5 are connected to the inner wall of the cooling cavity.

[0052] In this example, among the four side edges of the partition 5, three side edges are connected to the inner wall of the cooling cavity, and the remaining one side edge is spaced from the inner wall of the cooling cavity to form a communication opening, so that the chambers on both sides of the partition 5 are communicated through the communication opening; with this design, there is no need to process a communication structure on the partition 5, the structure of the partition 5 is simple and convenient for processing.

[0053] In one embodiment, as Figure 1 shown, at least two partitions 5 are arranged in the cooling cavity to divide the cooling cavity into at least three chambers; the liquid inlet 3 is communicated with the first chamber, and the liquid outlet 4 is communicated with the last chamber; the communication channels 6 on adjacent two partitions 5 are arranged in a staggered manner.

[0054] In this example, at least two partition plates 5 divide the cooling cavity to form at least three chambers. Among the two chambers on the outermost side, one is communicated with the liquid inlet 3, and the other is communicated with the liquid outlet 4; and the communication channels 6 on two adjacent partition plates 5 are arranged in a staggered manner. With such a design, the number of chambers in the cooling cavity is increased, thereby as much as possible lengthening the flow path of the coolant in the cooling cavity, prolonging the heat exchange time between the coolant and the air flow, enabling more heat in the coolant to be carried away by the air flow, and improving the cooling effect.

[0055] In one embodiment, as Figure 1 shown, the communication channel 6 on the partition plate 5 closest to the liquid inlet 3 is located at one end of the partition plate 5 away from the liquid inlet hole; and / or, the communication channel 6 on the partition plate 5 closest to the liquid outlet 4 is located at one end of the partition plate 5 away from the liquid outlet hole. With such a design, the flow path of the coolant in the cooling cavity is lengthened as much as possible, the heat exchange time between the coolant and the air flow is prolonged, enabling more heat in the coolant to be carried away by the air flow, and improving the cooling effect.

[0056] In one embodiment, as Figure 1 shown, the partition plate 5 includes a longitudinal partition plate arranged in the vertical direction, and the longitudinal partition plate divides the cooling cavity in the horizontal direction to form at least two chambers.

[0057] In this example, the partition plate 5 includes a longitudinal partition plate arranged in the vertical direction, and the longitudinal partition plate divides the cooling cavity in the horizontal direction to form at least two chambers. That is to say, the longitudinal partition plate divides the cooling cavity in the vehicle length direction or the vehicle width direction to form at least two chambers; with such a design, it is possible to use a partition plate 5 with a smaller volume to divide the cooling cavity into at least two chambers, which is beneficial to saving the material of the partition plate 5 and reducing the production cost while ensuring the cooling effect.

[0058] Preferably, the communication channel 6 is a notch opened downward on the longitudinal partition plate. With such a design, the coolant in one chamber can all flow into the next chamber, and the flow of the coolant is smoother, avoiding the accumulation of the coolant in the chamber.

[0059] In one embodiment, as Figure 1 shown, the liquid inlet 3 and the liquid outlet 4 are located at the rear side of the cooling cavity; the longitudinal partition plate 5 is arranged in the cooling cavity along the vehicle length direction to divide the cooling cavity in the vehicle width direction to form at least two chambers.

[0060] In this example, the liquid inlet 3 and the liquid outlet 4 are arranged at the rear side of the cooling cavity, which is convenient for communicating with the pipeline of the coolant, conducive to streamlining the pipeline path of the coolant, and also avoids interfering with the normal operation of the engine hood 1; the longitudinal partition 5 is arranged in the cooling cavity along the vehicle length direction to partition the cooling cavity in the vehicle width direction to form at least two chambers. Such a design enables the coolant to form convective heat transfer with the air flow as much as possible, improving the cooling efficiency.

[0061] The present invention also provides a vehicle, including the engine hood assembly described in any of the foregoing embodiments.

[0062] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An engine hood assembly, characterized in that, The engine hood assembly is provided with a cooling chamber, a liquid inlet and a liquid outlet communicated with the cooling chamber, and the cooling chamber is used for cooling the coolant passing through the electric drive system.

2. The engine hood assembly according to claim 1, characterized in that, The engine hood assembly includes an engine hood and a cover plate. The engine hood covers the cover plate to form the cooling chamber therebetween; the cover plate is provided with the liquid inlet and the liquid outlet.

3. The engine hood assembly according to claim 2, wherein, A first annular structure is provided on the inner side of the engine hood; The cover plate includes a cover plate body and a second annular structure provided on the cover plate body; The first annular structure and the second annular structure are sealingly fitted to form the cooling chamber.

4. The engine hood assembly according to claim 3, characterized in that, The first annular structure includes an annular mounting groove; The second annular structure includes an annular border extending from the edge of the cover plate body, and the annular border is sealingly fitted with the annular mounting groove.

5. The engine hood assembly according to claim 2, characterized in that, The bottom surface of the cover plate does not protrude beyond the bottom surface of the engine hood.

6. The engine hood assembly according to claim 2, characterized in that, The cooling chamber is a flat cavity.

7. The engine hood assembly according to claim 2, wherein, The engine hood assembly further includes at least one partition plate, and the partition plate is disposed in the cooling chamber to divide the cooling chamber into at least two chambers; a communication channel is provided on the partition plate for communicating adjacent two of the chambers; the liquid inlet is communicated with one of the chambers, and the liquid outlet is communicated with another one of the chambers.

8. The engine hood assembly according to claim 7, wherein At least two of the partition plates are disposed in the cooling chamber to divide the cooling chamber into at least three of the chambers; The liquid inlet is connected to the first chamber, and the liquid outlet is connected to the last chamber; The communication channels on adjacent two of the partition plates are arranged in a staggered manner.

9. The engine hood assembly according to claim 8, characterized in that, The communication channel on the partition plate closest to the liquid inlet is located at one end of the partition plate away from the liquid inlet hole; And / or, the communication channel on the partition plate closest to the liquid outlet is located at one end of the partition plate away from the liquid outlet hole.

10. The engine hood assembly according to claim 7, characterized in that, The partition plate includes a longitudinal partition plate disposed in the vertical direction, and the longitudinal partition plate divides the cooling chamber in the horizontal direction into at least two chambers.

11. The engine hood assembly according to claim 10, wherein, The liquid inlet and the liquid outlet are located at the rear side of the cooling chamber; The longitudinal partition plate is disposed in the cooling chamber along the vehicle length direction to divide the cooling chamber in the vehicle width direction into at least two chambers.

12. A vehicle, characterized in that, An engine hood assembly according to any one of claims 1-11 is included.

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