Auxiliary heat dissipation device of vehicle, bumper assembly, heat dissipation system and vehicle

Abstract

The embodiment of the utility model provides an auxiliary heat dissipation device of a vehicle, a bumper assembly, a heat dissipation system and the vehicle, and the auxiliary heat dissipation device comprises a cooling liquid pipeline, at least one heat dissipation structure and a valve. The at least one heat dissipation structure is connected to the cooling liquid pipeline, the heat dissipation structure comprises a plurality of cooling fins arranged at intervals, the cooling fins protrude out of the outer surface of the vehicle, the valve is provided with a first connector, a second connector and a third connector, the first connector is connected to the cooling liquid pipeline, and the second connector and the third connector are connected to a main heat dissipation mechanism of the vehicle. According to the auxiliary heat dissipation device of the vehicle, the bumper assembly, the heat dissipation system and the vehicle, occupied space of a motor heat dissipation device on a front cabin of the vehicle can be reduced, the possibility that heat dissipation power overflows can be reduced as much as possible, and electric energy is saved.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of vehicle technology, and in particular, to an auxiliary heat dissipation device, a bumper assembly, a heat dissipation system and a vehicle. Background Art

[0002] The cooling system of a vehicle is crucial, especially for hybrid vehicles, where the cooling system needs to meet the cooling requirements of both the internal combustion engine and the motor. Taking a hybrid vehicle as an example, the cooling system usually includes a motor radiator, which is usually arranged vertically behind the air guide grille in the front cabin of the vehicle.

[0003] In order to achieve a better heat dissipation effect, the motor radiator usually has a large volume, occupying more layout space in the front cabin. In addition, even if the motor radiator has a large volume, the motor radiator may still not be able to fully meet the heat dissipation requirements of the motor. Therefore, the heat dissipation system usually also includes active heat dissipation devices such as fans. When the motor radiator cannot meet the heat dissipation requirements, the active heat dissipation device needs to be turned on for heat dissipation. However, this easily leads to overflow of heat dissipation power, resulting in energy waste. Utility Model Content

[0004] In view of this, embodiments of the present application hope to provide an auxiliary heat dissipation device, a bumper assembly, a heat dissipation system and a vehicle for a vehicle that can at least partially solve the above-mentioned problems.

[0005] A first aspect of an embodiment of the present application provides an auxiliary heat dissipation device for a vehicle, characterized in that the auxiliary heat dissipation device includes: a coolant pipeline; at least one heat dissipation structure connected to the coolant pipeline, the heat dissipation structure including a plurality of heat dissipation fins arranged at intervals, and the heat dissipation fins protrude from the outer surface of the vehicle; and a valve having a first interface, a second interface and a third interface, the first interface being connected to the coolant pipeline, and the second interface and the third interface being connected to the main heat dissipation mechanism of the vehicle.

[0006] In some embodiments, the coolant pipeline includes a main pipeline and a plurality of branch pipelines connected to the main pipeline, wherein at least one side of each branch pipeline is provided with at least one of the heat dissipation structures.

[0007] In some embodiments, the branch pipe is disposed on the bottom side of the vehicle and extends along a first direction, a plurality of the branch pipes are disposed at intervals along a second direction, and the first direction intersects with the second direction.

[0008] In some embodiments, the heat dissipation structure further includes a connecting plate, which is disposed on one side of the branch pipe along the second direction and extends along the first direction, and the plurality of heat sinks are disposed on the bottom side of the connecting plate and are spaced apart along the second direction.

[0009] In some embodiments, the bottom end surface of the connecting plate is higher than the bottom end surface of the branch pipe, and the bottom end surface of the heat sink is lower than the bottom end surface of the branch pipe.

[0010] In some embodiments, the heat sink extends along a first direction, and / or the heat sink protrudes from a bottom surface of the vehicle.

[0011] The second aspect of the embodiment of the present application provides a bumper assembly for a vehicle, the bumper assembly comprising: a bumper, and an auxiliary heat dissipation device as described in the first aspect of the embodiment of the present application, the auxiliary heat dissipation device is arranged on the side of the bumper facing the vehicle body, and the heat sink protrudes from the bottom surface of the bumper.

[0012] The third aspect of an embodiment of the present application provides a cooling system for a vehicle, the cooling system comprising: a main cooling mechanism, comprising a coolant circulation channel, a motor radiator connected to the coolant circulation channel, and a pumping device for pumping coolant; an auxiliary cooling mechanism, comprising at least one auxiliary cooling device as described in the first aspect of the present application, wherein the second interface and the third interface are connected to the coolant circulation channel; a temperature detection mechanism, comprising a first temperature sensor arranged downstream of the motor radiator along the coolant flow direction; and a control mechanism, for controlling the opening and closing of the valve according to data detected by the temperature detection mechanism.

[0013] In some embodiments, the temperature detection structure further includes a second temperature sensor, and the second temperature sensor is used to detect the engine temperature of the vehicle.

[0014] In some embodiments, the main heat dissipation mechanism further includes an active heat dissipation device, which is used to cool the motor radiator. The control mechanism is also used to control the opening and closing of the active heat dissipation device according to the data detected by the temperature detection mechanism.

[0015] In some embodiments, the auxiliary heat dissipation mechanism includes at least two auxiliary heat dissipation devices, and at least two auxiliary heat dissipation devices are respectively arranged on the front bumper and the rear bumper of the vehicle.

[0016] The fourth aspect of the embodiments of the present application provides a vehicle, which includes at least one of the following: the auxiliary heat dissipation device described in the first aspect of the embodiments of the present application, the bumper assembly of the second aspect of the embodiments of the present application, and the heat dissipation system described in the third aspect of the embodiments of the present application.

[0017] The auxiliary heat dissipation device, bumper assembly, heat dissipation system and vehicle of the vehicle of the embodiment of the present application help to reduce the space occupied by the motor radiator in the front cabin of the vehicle, and can minimize the possibility of heat dissipation power overflow, thereby saving electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a heat dissipation system according to an embodiment of the present application;

[0019] Figure 2 A schematic diagram of a partial structure of an auxiliary heat dissipation device according to an embodiment of the present application;

[0020] Figure 3 Schematic diagram of the position of the auxiliary heat dissipation device in a vehicle according to an embodiment of the present application.

[0021] Description of Reference Numerals

[0022] 1. Main heat dissipation mechanism; 11. Coolant circulation channel; 12. Pumping device; 13. Motor radiator; 14. Electric drive system pipeline; 15. Active heat dissipation device; 2. Auxiliary heat dissipation device; 21. Coolant pipeline; 211. Main pipeline; 212. Branch pipeline; 22. Heat dissipation structure; 221. Heat sink; 222. Connecting plate; 23. Valve; 231. First interface; 232. Second interface; 233. Third interface; 3. Bumper; 4. Temperature detection mechanism; 41. First temperature sensor; 42. Second temperature sensor; 5. Control mechanism. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features in the utility model will not be described separately.

[0025] It should be noted that the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. "Multiple" means greater than or equal to two.

[0026] In the description of the present application, the orientations or positional relationships of “first direction”, “second direction”, “top” and “bottom” are based on the orientations or positional relationships shown in the accompanying drawings, wherein the “first direction” is the direction indicated by the arrow L1 in the accompanying drawings, and the “second direction” is the direction indicated by the arrow L2 in the accompanying drawings. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.

[0027] An embodiment of the present application first provides an auxiliary heat dissipation device for a vehicle, which is used to be connected to a main heat dissipation mechanism of the vehicle and is used to provide an auxiliary heat dissipation function under certain working conditions.

[0028] The vehicle here may refer to an electric vehicle or a fuel vehicle, and the electric vehicle may be a pure electric vehicle or a hybrid vehicle. The main heat dissipation mechanism here may be any suitable heat dissipation mechanism of a vehicle provided in the relevant technology in the art.

[0029] For ease of understanding, before introducing the auxiliary heat dissipation device of the vehicle according to the embodiment of the present application, a hybrid vehicle is taken as an example to introduce the main heat dissipation mechanism of the vehicle.

[0030] Reference Figure 1 The main heat dissipation mechanism 1 includes a coolant circulation channel 11 and a pumping device 12 for pumping coolant. The coolant here may include but is not limited to water, oil, or other heat-conducting liquids. The pumping device 12 can pump the coolant to circulate in the coolant circulation channel 11, thereby taking away the heat generated by the relevant components when working, and achieving a heat dissipation effect.

[0031] The hybrid vehicle has both a motor and an engine (internal combustion engine). Generally speaking, the coolant circulation channel 11 for cooling the motor and the coolant circulation channel 11 for cooling the engine are relatively independent. However, in some embodiments, the same coolant circulation channel 11 can be used to cool the motor and the engine. This embodiment mainly introduces the coolant circulation channel 11 for cooling the motor.

[0032] Specifically, Figure 1 The middle arrow indicates the flow direction of the coolant. In this embodiment, the main heat dissipation mechanism 1 includes a motor radiator 13 and an electric drive system pipeline 14 connected to the coolant circulation channel 11, and the coolant flows through the motor radiator 13 and the electric drive system pipeline 14 in sequence.

[0033] The motor radiator 13 is arranged vertically in the front cabin of the vehicle and is located behind the air guide grille of the vehicle. When the vehicle is moving, the air flow will flow to the motor radiator 13 through the air guide grille and exchange heat with the coolant flowing in the motor radiator 13, thereby achieving cooling of the motor.

[0034] The electric drive system cooling line 14 may run along various components in the electric drive system of the vehicle, thereby cooling the components in the electric drive system.

[0035] The main heat dissipation mechanism 1 also includes an active heat dissipation device 15. As an example, the active heat dissipation device 15 includes a fan, which is arranged close to the motor radiator 13. For example, the blades of the fan can be arranged directly facing the motor radiator 13. When the motor radiator 13 cannot meet the heat dissipation requirements of the motor, the fan can be turned on to cool down the motor radiator 13, thereby meeting the heat dissipation requirements of the motor.

[0036] It should be noted that the structure of the active heat dissipation mechanism 1 is not limited to this, and the heat dissipation mechanisms used by vehicles in the related art can all be used as the active heat dissipation mechanism 1 here, including the heat dissipation mechanisms used by pure electric vehicles and pure fuel vehicles. When the main heat dissipation mechanism 1 is a heat dissipation mechanism of a pure fuel vehicle, the above-mentioned motor radiator 13 can be used as an engine radiator, but its structure can remain unchanged, that is, it can still be arranged vertically in the front cabin of the vehicle and located behind the air guide grille.

[0037] As mentioned above, in order to obtain a better heat dissipation effect, the motor radiator 13 usually needs to have a larger volume, which will occupy a large amount of space in the front cabin of the vehicle, which is not conducive to the compactness of the overall structural layout of the vehicle. In addition, when the active heat dissipation device 15 is turned on, the heat dissipation power may overflow, resulting in a waste of electric energy.

[0038] To this end, the embodiment of the present application provides an auxiliary heat dissipation device 2 for a vehicle, referring to Figure 1 and Figure 2 The auxiliary heat dissipation device 2 of the embodiment of the present application includes a coolant pipeline 21, at least one heat dissipation structure 22, and a valve 23.

[0039] The coolant pipeline 21 is used for the flow of coolant, and at least one heat dissipation structure 22 is connected to the coolant pipeline 21. The heat dissipation structure 22 includes a plurality of heat dissipation fins 221 arranged at intervals, and the heat dissipation fins 221 protrude from the outer surface of the vehicle. It can be understood that since the heat dissipation fins 221 protrude from the outer surface of the vehicle, during the movement of the vehicle, the external airflow will come into contact with the heat dissipation fins 221, thereby cooling the heat dissipation fins 221. Since the heat dissipation structure 22 is connected to the coolant pipeline 21, the coolant in the coolant pipeline 21 can be cooled, thereby achieving a heat dissipation effect.

[0040] In this embodiment, the heat sink 221 can protrude from any one or more outer surfaces of the vehicle, such as the bottom surface, side surface, top surface, front and rear surfaces, etc. of the vehicle. It is sufficient that the heat sink 221 can come into contact with the external airflow during the movement of the vehicle to achieve a heat dissipation effect.

[0041] More specifically, the heat sink 221 is connected to the vehicle's exterior trim and protrudes from the surface of the exterior trim, where the exterior trim may include but is not limited to the vehicle's bumper, side skirts, bottom panel, etc. Taking the connection of the heat sink 221 to the vehicle's bumper 3 as an example, the heat sink 221 may protrude from the bottom surface of the bumper, so that the heat sink 221, in addition to meeting the heat dissipation requirements, can also be used as a wind guide structure of the vehicle bumper (in the related art, a wind guide structure is usually provided on the bottom side of the bumper to reduce wind resistance, but the wind guide structure does not have a heat dissipation function), thereby further improving the compactness of the vehicle body structure.

[0042] The specific number of the heat dissipation structures 22 and the connection method with the coolant pipeline 21 are not limited, and the number of heat sinks 221 in each heat dissipation structure 22 and the specific arrangement method of the heat sinks 221 are not limited, and those skilled in the art can set them according to the specific structure of the vehicle. In the case where the number of heat dissipation structures 22 is two or more, the number and / or arrangement method of the heat sinks 221 in different heat dissipation structures can be the same, different or not completely the same.

[0043] The valve 23 is used to connect the coolant pipeline 21 to the main heat dissipation mechanism 1 in a switchable manner. Specifically, the coolant pipeline 21 can be connected to the coolant circulation channel 11 mentioned above in a switchable manner. Specifically, refer to Figure 1, the coolant pipeline 21 can be connected in parallel with the coolant circulation channel 11, that is, both ends of the coolant pipeline 21 can be connected to the coolant circulation channel 11, and the valve 23 can be a three-way valve, which can have a first interface 231, a second interface 232, and a third interface 233. The first interface 231 is connected to the coolant pipeline 21, and the second interface 232 and the third interface 233 are connected to the main heat dissipation mechanism 1, specifically, connected to the coolant circulation channel 11 of the main heat dissipation mechanism 1. When the first interface 231 and the second interface 232 are opened and the third interface 233 is closed, the coolant pipeline 21 is connected to the coolant circulation channel 11. When the first interface 231 is closed and the second interface 232 and the third interface 233 are opened, the coolant pipeline 21 is disconnected from the coolant circulation channel 11, and the coolant in the coolant circulation channel 11 no longer flows through the coolant pipeline 21.

[0044] It can be understood that since the coolant pipeline 21 can be connected to the coolant circulation channel 11 through the valve 23, the heat dissipation structure 22 can share part of the heat dissipation demand of the motor radiator 13, so that the volume of the motor radiator 13 can be reduced. In addition, since the heat dissipation structure 22 of the embodiment of the present application achieves heat dissipation by protruding from the outer surface of the vehicle, it does not need to occupy the space inside the front cabin of the vehicle. Therefore, in general, the auxiliary heat dissipation device 2 of the embodiment of the present application helps to reduce the space occupied by the motor radiator 13 in the front cabin of the vehicle.

[0045] Furthermore, the coolant pipeline 21 can also be disconnected from the coolant circulation channel 11 through the valve 23. In this way, when the heat dissipation demand is relatively low, the coolant circulation pipeline can be disconnected from the coolant circulation channel 11, thereby reducing the load of the pumping device 12 and saving electric energy. When the heat dissipation demand is relatively high, the coolant circulation pipeline can be connected to the coolant circulation channel 11 first. If the heat dissipation demand still cannot be met, the active heat dissipation device 15 can be turned on. In this way, the possibility of heat dissipation power overflow can be reduced as much as possible, saving electric energy.

[0046] In some embodiments, reference Figure 2 The coolant pipeline 21 includes a main pipeline 211 and a plurality of branch pipelines 212 connected to the main pipeline 211, wherein at least one side of each branch pipeline 212 is provided with at least one heat dissipation structure 22. In this way, the flexibility of the heat dissipation structure 22 can be improved by adding branch pipelines 212, and the heat exchange area between the heat dissipation structure 22 and the external airflow and the coolant can be increased, thereby improving the heat dissipation effect of the auxiliary heat dissipation device 2.

[0047] It should be noted that what is shown in the figure is only a partial schematic diagram of the main pipeline 211 and multiple branch pipelines 212. Those skilled in the art should understand that the main pipeline 211 should at least include a water inlet pipeline and a water return pipeline, and one end of the branch pipeline 212 should be connected to the water inlet pipeline, and the other end should be connected to the water return pipeline, so that the coolant can circulate smoothly.

[0048] Furthermore, in this embodiment, in addition to at least one heat dissipation structure 22 being provided on at least one side of each branch pipeline 212, a heat dissipation structure 22 may also be provided on the main pipeline 211, and those skilled in the art may configure the heat dissipation structure 22 by themselves according to actual use requirements.

[0049] In some embodiments, specifically, the branch pipe 212 is arranged on the bottom side of the vehicle and extends along the first direction, and multiple branch pipes 212 are arranged at intervals along the second direction. In this way, the space occupied by the branch pipe 212 in the vehicle can be reduced, and more branch pipes 212 can be arranged in the limited space on the bottom side of the vehicle, so as to obtain a better heat dissipation effect. Further, in this embodiment, since the branch pipe 212 is arranged on the bottom side of the vehicle, the heat sink 221 is also correspondingly located on the bottom side of the vehicle, which will help improve the overall aesthetics of the vehicle and help reduce the wind resistance of the vehicle during driving.

[0050] In this embodiment, the first direction intersects with the second direction, and the first direction and the second direction may be orthogonal, or may be at an acute angle or an obtuse angle, and there is no limitation on this. In some embodiments, the first direction is parallel to the front-rear direction of the vehicle, and the second direction is parallel to the left-right direction of the vehicle, so that the layout of the branch pipe 212 can be further optimized to obtain a better heat dissipation effect.

[0051] In some embodiments, reference Figure 2 The heat dissipation structure 22 also includes a connecting plate 222, which is arranged on one side of the branch pipe 212 along the second direction and extends along the first direction, and a plurality of heat sinks 221 are arranged on the bottom side of the connecting plate 222 and are arranged at intervals along the second direction. That is, in this embodiment, the plurality of branch pipes 212 and the plurality of heat sinks 221 of each heat dissipation structure 22 are arranged along the second direction, so that the space on the bottom side of the vehicle can be more fully utilized, the heat exchange area can be increased, and a better heat dissipation effect can be obtained. Furthermore, it can also reduce the space occupied in the height direction, and reduce the influence of the arrangement of the branch pipe 212 and the heat sink 221 on the height of the vehicle chassis.

[0052] Further, in Figure 2In the illustrated embodiment, the two opposite ends of the connection plate 222 along the second direction are respectively connected to two branch pipes 212, that is, two adjacent branch pipes 212 can share a heat dissipation structure 22, thereby further improving the density of the heat sink 221 and the branch pipes 212. In other embodiments, the connection plate 222 may also be connected to only one branch pipe 212, that is, two adjacent branch pipes 212 may not share the heat dissipation structure 22.

[0053] In some embodiments, still referring to Figure 2 , the bottom end surface of the connecting plate 222 is higher than the bottom end surface of the branch pipe 212, and the bottom end surface of the heat sink 221 is lower than the bottom end surface of the branch pipe 212. In this way, on the one hand, the branch pipe 212 can be protruded from the bottom surface of the vehicle as little as possible, or even not protruded from the bottom surface of the vehicle, while the heat sink 221 protrudes from the bottom surface of the vehicle, thereby reducing the risk of the branch pipe 212 being damaged by collision with road obstacles and improving the safety of use. On the other hand, since the bottom end surface of the connecting plate 222 is higher than the bottom end surface of the branch pipe 212, the top end of the heat sink 221 will also be higher than the bottom end surface of the branch pipe 212, which helps to further increase the heat exchange area and obtain a better heat dissipation effect.

[0054] In some other embodiments, the connecting plate 222 may not be provided, and the heat sink 221 may be directly provided on the bottom end surface of the branch pipe 212 .

[0055] In the above embodiment, the heat sink 221 extends along the first direction. The advantage of the heat sink 221 and the branch pipe 212 extending along the first direction is that the effective heat exchange area can be increased and the heat exchange effect can be improved. Further, as mentioned above, in some embodiments, the first direction is parallel to the front-to-back direction of the vehicle. In this case, the extension direction of the heat sink 221 is parallel to the airflow direction during the movement of the vehicle, which can further reduce its wind resistance. It should be noted that the heat sink 221 can also extend in other directions, such as extending in a direction having a certain angle with the front-to-back direction of the vehicle.

[0056] In some embodiments, the heat sink 221 is raised from the bottom surface of the vehicle. The heat sink 221 is raised from the bottom surface of the vehicle to increase its contact area with the airflow, thereby improving the heat dissipation effect.

[0057] It should be noted that, when the branch pipe 212 is arranged on the bottom side of the vehicle, the heat sink 221 may not protrude from the bottom surface of the vehicle, but may protrude from other surfaces of the vehicle, such as the front surface, rear surface, side surface, etc.

[0058] The auxiliary heat dissipation device mentioned above will be described in more detail and specifically in conjunction with a specific embodiment.

[0059] Reference Figure 1-Figure 3 The auxiliary heat dissipation device includes a coolant pipeline 21, at least one heat dissipation structure 22 and a valve 23.

[0060] The coolant pipeline 21 includes a main pipeline 211 and a plurality of branch pipelines 212 connected to the main pipeline 211. One end of the main pipeline 211 is connected to the coolant circulation channel 11 of the main heat dissipation structure 1 of the vehicle by means of a valve 23, and the other end is directly connected to the coolant circulation channel 11. The valve 23 has a first interface 231, a second interface 232 and a third interface 233. The first interface 231 is connected to one end of the main pipeline 211, and the second interface 232 and the third interface 233 are connected to the coolant circulation channel 11.

[0061] A plurality of branch pipes 212 are disposed on the bottom side of the vehicle, the branch pipes 212 extend along a first direction, and the plurality of branch pipes 212 are disposed at intervals along a second direction. The first direction is parallel to the front-rear direction of the vehicle, and the second direction is parallel to the left-right direction of the vehicle.

[0062] A heat dissipation structure 22 is provided on both sides of each branch pipeline 212 along the second direction, and two adjacent branch pipelines 212 share a heat dissipation structure 22. The heat dissipation structure 22 includes a plurality of heat sinks 221 and a connecting plate 222. The connecting plate 222 is connected to one side of the branch pipeline 212 along the second direction. The plurality of heat sinks 221 are provided on the bottom side of the connecting plate 222 and protrude from the bottom surface of the vehicle, so that the heat sink 222 has a larger contact area with the airflow, thereby improving the heat dissipation effect. Furthermore, the bottom end surface of the connecting plate 222 is higher than the bottom end surface of the branch pipeline 212, and the bottom end surface of the heat sink 221 is lower than the bottom end surface of the branch pipeline 212. In this way, on the one hand, the effective heat exchange area between the heat sink 221 and the branch pipeline can be increased. On the other hand, the heat sink 222 can be protruded from the bottom surface of the vehicle, while the bottom end surface of the branch pipeline 212 is roughly flush with the bottom surface of the vehicle or even higher than the bottom surface of the vehicle, thereby improving the safety of the vehicle during driving.

[0063] The heat sink 221 extends in a first direction, that is, the same as the extension direction of the branch pipe 212, so that the effective heat dissipation area of ​​the heat sink 221 and the coolant in the branch pipe 212 can be increased, thereby improving the heat dissipation effect. Furthermore, the first direction is parallel to the front-rear direction of the vehicle, that is, the extension direction of the heat sink 221 is parallel to the airflow direction during the vehicle's movement, so that the wind resistance can be reduced while improving the heat dissipation effect.

[0064] In actual use, the auxiliary heat dissipation device can be arranged on the side of the vehicle bumper facing the body of the vehicle. Specifically, the branch pipe 212 can be arranged on the side of the vehicle bumper facing the body of the vehicle, such as on the rear side of the front bumper of the vehicle, or on the front side of the rear bumper of the vehicle, and the heat sink 221 can protrude from the bottom end surface of the bumper. In this way, the heat sink 221 can also replace the wind guide structure originally provided on the vehicle bumper, thereby reducing costs.

[0065] The embodiment of the present application also provides a bumper assembly, referring to Figure 3 The bumper assembly includes a bumper 3 and an auxiliary heat sink 2 as described in any of the above embodiments. The auxiliary heat sink 2 is arranged on the side of the bumper 3 facing the vehicle body, and the heat sink 221 protrudes from the bottom surface of the bumper 3.

[0066] In this embodiment, the bumper 3 may be the front bumper of the vehicle, and the auxiliary heat sink 2 may be disposed at the rear side of the front bumper. Alternatively, the bumper 3 may also be the rear bumper, and the auxiliary heat sink 2 may be disposed at the front side of the rear bumper, without limitation.

[0067] In the present embodiment, since the heat sink 221 protrudes from the bottom surface of the bumper 3, in addition to having the heat dissipation function, it can also replace the original wind guide structure of the bumper 3. In other words, the original wind guide structure of the bumper 3 can be used as the heat dissipation structure 22 of the auxiliary heat dissipation device 2. In this way, the bumper assembly not only has all the advantages of the auxiliary heat dissipation device 2 mentioned above, but also has the advantage of low cost.

[0068] The embodiment of the present application also provides a vehicle cooling system, referring to Figure 1-Figure 3 The heat dissipation system includes a main heat dissipation mechanism 1, an auxiliary heat dissipation mechanism, a temperature detection mechanism 4 and a control mechanism 5.

[0069] The main heat dissipation mechanism 1 comprises a coolant circulation channel 11, a motor radiator 13 connected to the coolant circulation channel 11, and a pumping device 12 for pumping coolant. The specific structure of the main heat dissipation mechanism 1 can refer to the description of the relevant parts above, which will not be repeated here.

[0070] The auxiliary heat dissipation mechanism includes at least one auxiliary heat dissipation device 2 as described in any of the above embodiments, and the valve 23 connects the coolant pipeline 21 to the coolant circulation channel 11 of the main heat dissipation mechanism 1. Specifically, the second interface 232 and the third interface 233 of the valve 23 are connected to the coolant circulation channel 11. As mentioned above, this helps to reduce the volume of the motor radiator 13 in the main heat dissipation mechanism 1, thereby reducing the space occupied by the front cabin of the vehicle.

[0071] The temperature detection mechanism 4 includes a first temperature sensor 41, which is arranged downstream of the motor radiator 13 along the flow direction of the coolant, that is, the first temperature sensor 41 is used to detect the temperature of the coolant flowing out of the motor radiator 13. The control mechanism 5 is used to control the opening and closing of the valve 23 according to the data detected by the temperature detection mechanism 4.

[0072] Specifically, when the temperature detected by the first temperature sensor 41 is low, that is, when the heat dissipation demand of the motor is low, the control mechanism 5 can control the valve 23 to close, so that the coolant pipeline 21 is disconnected from the coolant circulation channel 11, thereby reducing the pumping power of the pumping device 12 and saving electric energy. When the temperature detected by the first temperature sensor 41 is high, that is, when the heat dissipation demand is high, the control mechanism 5 can control the valve 23 to open, so that the coolant pipeline 21 is connected to the coolant circulation channel 11 to meet the heat dissipation demand.

[0073] In this embodiment, the auxiliary heat dissipation mechanism may include one auxiliary heat dissipation device 2, or may include multiple auxiliary heat dissipation devices 2. In the case where the auxiliary heat dissipation mechanism includes multiple auxiliary heat dissipation devices 2, the control mechanism 5 may also control the opening and closing of the valve 23 of each auxiliary heat dissipation device 2 according to the data detected by the temperature detection mechanism 4, so that more refined control can be achieved, reducing the possibility of waste of electric energy due to overflow of heat dissipation power. As an example, the auxiliary heat dissipation mechanism may include at least two auxiliary heat dissipation devices 2, and the at least two auxiliary heat dissipation devices 2 are respectively arranged on the front bumper and the rear bumper of the vehicle.

[0074] In some embodiments, the temperature detection mechanism 4 further includes a second temperature sensor 42, and the second temperature sensor 42 is used to detect the engine temperature of the vehicle. In this embodiment, the vehicle includes both a motor and an engine, that is, the vehicle is a hybrid vehicle, and the temperature detection mechanism 4 will be able to simultaneously provide the temperature of the motor (data from the first temperature sensor 41) and data related to the engine temperature (data from the second temperature sensor 42), which helps the control mechanism 5 to comprehensively consider the heat dissipation requirements of the motor and the engine to control the opening and closing of the valve 23, so as to better meet the heat dissipation requirements.

[0075] It should be noted that, in this embodiment, the heat dissipation system can be used to dissipate heat for the engine (such as the main heat dissipation mechanism 1 can also include an engine radiator connected to the coolant circulation channel 11), or it may not be used to dissipate heat for the engine (the engine can rely on another heat dissipation system for heat dissipation), and there is no limitation on this.

[0076] In some embodiments, the main heat dissipation mechanism 1 further includes an active heat dissipation device 15 , which is used to cool the motor radiator 13 . The control mechanism 5 is further used to control the opening and closing of the active heat dissipation device 15 according to data detected by the temperature detection mechanism 4 .

[0077] In this embodiment, the control mechanism 5 can meet more diverse heat dissipation requirements by adjusting the opening and closing of the valve 23 and the opening and closing of the active heat dissipation device 15, and further reduce the possibility of heat dissipation power overflow.

[0078] Taking the temperature detection mechanism 4 including the first temperature sensor 41 and the second temperature sensor 42 as an example, when the temperatures detected by the first temperature sensor 41 and the second temperature sensor 42 are both low, it means that the vehicle is in a low heat dissipation demand state, and the control mechanism 5 can control the valve 23 to disconnect the coolant pipeline 21 from the coolant circulation channel 11, thereby reducing the load of the pumping device 12. When the first temperature sensor 41 is at a higher value and the second temperature sensor 42 is still at a lower value, it means that the engine is in a low heat dissipation demand condition and the engine is in a high heat dissipation demand condition. The control mechanism 5 can control the valve 23 to connect the coolant pipeline 21 with the coolant circulation channel 11, and use the auxiliary heat dissipation device 2 to dissipate heat from the motor. If the temperature detected by the first temperature sensor 41 continues to rise after this, the control mechanism 5 can turn on the active heat dissipation device 15.

[0079] An embodiment of the present application further provides a vehicle, which may include at least one of the auxiliary heat dissipation device 2, the bumper assembly, and the heat dissipation system described in any of the embodiments above.

[0080] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An auxiliary heat dissipation device for a vehicle, characterized in that: The auxiliary heat dissipation device comprises: Coolant lines; at least one heat dissipation structure connected to the coolant pipeline, the heat dissipation structure comprising a plurality of heat dissipation fins arranged at intervals, the heat dissipation fins protruding from an outer surface of the vehicle; and The valve has a first interface, a second interface and a third interface, wherein the first interface is connected to the coolant pipeline, and the second interface and the third interface are connected to the main heat dissipation mechanism of the vehicle.

2. The auxiliary heat dissipation device according to claim 1, characterized in that: The coolant pipeline includes a main pipeline and a plurality of branch pipelines connected to the main pipeline, wherein at least one side of each branch pipeline is provided with at least one of the heat dissipation structures.

3. The auxiliary heat dissipation device according to claim 2, characterized in that: The branch pipe is arranged at the bottom side of the vehicle and extends along a first direction, and a plurality of the branch pipes are arranged at intervals along a second direction, and the first direction intersects with the second direction.

4. The auxiliary heat dissipation device according to claim 3, characterized in that: The heat dissipation structure further includes a connecting plate, which is arranged on one side of the branch pipe along the second direction and extends along the first direction. The plurality of heat dissipation fins are arranged on the bottom side of the connecting plate and are spaced apart along the second direction.

5. The auxiliary heat dissipation device according to claim 4, characterized in that: The bottom end surface of the connecting plate is higher than the bottom end surface of the branch pipe, and the bottom end surface of the heat sink is lower than the bottom end surface of the branch pipe.

6. The auxiliary heat dissipation device according to any one of claims 3 to 5, characterized in that: The heat sink extends along the first direction, and / or the heat sink protrudes from the bottom surface of the vehicle.

7. A vehicle bumper assembly, characterized in that: The bumper assembly comprises: Bumpers, and The auxiliary heat dissipation device as described in any one of claims 1 to 6, wherein the auxiliary heat dissipation device is arranged on a side of the bumper facing the vehicle body, and the heat sink protrudes from the bottom surface of the bumper.

8. A cooling system for a vehicle, characterized in that: The heat dissipation system comprises: A main heat dissipation mechanism, comprising a coolant circulation channel, a motor radiator communicated with the coolant circulation channel, and a pumping device for pumping the coolant; An auxiliary heat dissipation mechanism, comprising at least one auxiliary heat dissipation device according to any one of claims 1 to 6, wherein the second interface and the third interface are connected to the coolant circulation channel; a temperature detection mechanism, comprising a first temperature sensor disposed downstream of the motor radiator along a flow direction of the coolant; and A control mechanism is used to control the opening and closing of the valve according to the data detected by the temperature detection mechanism.

9. The heat dissipation system according to claim 8, characterized in that: The temperature detection structure further includes a second temperature sensor, and the second temperature sensor is used to detect the engine temperature of the vehicle.

10. The heat dissipation system according to claim 8 or 9, characterized in that: The main heat dissipation mechanism also includes an active heat dissipation device, which is used to cool the motor radiator. The control mechanism is also used to control the opening and closing of the active heat dissipation device according to the data detected by the temperature detection mechanism.

11. The heat dissipation system according to claim 8, characterized in that: The auxiliary heat dissipation mechanism comprises at least two auxiliary heat dissipation devices, and the at least two auxiliary heat dissipation devices are respectively arranged on the front bumper and the rear bumper of the vehicle.

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