Radiator for vehicle, control method thereof, and vehicle

Abstract

The application discloses a heat dissipation device for a vehicle, a control method thereof and the vehicle, and belongs to the technical field of automobile heat dissipation and cooling. The device comprises a control member, a first temperature measuring member, a liquid nitrogen storage tank and a cooling circulation pipeline. The liquid nitrogen storage tank comprises a storage chamber and a vaporization chamber, and the storage chamber is located at the lower part of the vaporization chamber. A through hole communicating with the outside is formed in the chamber wall of the vaporization chamber. The liquid nitrogen storage tank is provided with a communication pipeline, the communication pipeline communicates the storage chamber and the vaporization chamber, and the communication pipeline located in the vaporization chamber is provided with a second suction member. The cooling circulation pipeline is suitable for cooling the electric appliance of the vehicle by a cooling liquid. The cooling circulation pipeline is sequentially provided with a heat exchange pipeline, the first suction member and a heat dissipation pipeline. The heat exchange pipeline is located in the vaporization chamber, the heat dissipation pipeline is located in the electric appliance, and the first temperature measuring member is located on the electric appliance. The control member is signal connected with the first temperature measuring member, the first suction member and the second suction member. The device can meet the heat dissipation demand of the electric appliance.

Description

Technical Field

[0001] This application relates to the field of automotive heat dissipation and cooling technology, and in particular to a heat dissipation device for vehicles, a control method thereof, and a vehicle. Background Technology

[0002] With the continuous development of society, automobiles have become an indispensable means of transportation in people's daily lives. Currently, automobiles are equipped with a variety of electrical appliances. Since the electronic components inside these appliances need to be at a suitable temperature to function properly, otherwise their performance will be affected, it is particularly important to ensure that electronic components can operate at a suitable temperature.

[0003] In related technologies, to ensure the normal operation of electronic components within electrical appliances, heat sinks are typically installed on one side of the appliance. Since the heat sink is located within cooling pipes, the coolant circulating in the pipes carries away heat dissipated by the electronic components through heat exchange as it passes over the heat sink, thus cooling the appliance. After passing over the heat sink, the coolant further dissipates heat through heat exchange with the air. However, current cooling methods, especially in high-temperature environments, are no longer sufficient to meet the heat dissipation requirements of electrical appliances. Summary of the Invention

[0004] In view of this, this application provides a heat dissipation device and control method for a vehicle, and the vehicle can meet the heat dissipation requirements of electrical appliances in high-temperature environments.

[0005] Specifically, the following technical solutions are included:

[0006] In a first aspect, embodiments of this application provide a heat dissipation device for a vehicle, the device comprising: a control unit, a first temperature measuring element, a liquid nitrogen storage tank, and a cooling circulation pipeline;

[0007] The liquid nitrogen storage tank includes a storage chamber and a vaporization chamber. The storage chamber is located below the vaporization chamber and is used to contain liquid nitrogen. The vaporization chamber has a through hole in its wall that allows communication with the outside. The liquid nitrogen storage tank also has a connecting pipe that connects the storage chamber and the vaporization chamber, and a second suction device is installed on the connecting pipe located inside the vaporization chamber.

[0008] The cooling circulation pipeline is adapted to cool the vehicle's electrical appliances using coolant. The cooling circulation pipeline is provided with a heat exchange pipeline, a first suction component, and a heat dissipation pipeline in sequence. The heat exchange pipeline is located in the vaporization chamber, the heat dissipation pipeline is located inside the electrical appliance, and the first temperature measuring component is located on the electrical appliance.

[0009] The control unit is signal-connected to the first temperature measuring unit, the first suction unit, and the second suction unit.

[0010] In some embodiments, the connecting conduit includes a first part and a second part;

[0011] The first part is located in liquid nitrogen within the storage chamber;

[0012] The second part is located in the vaporization chamber, and the second part is provided with the second suction element.

[0013] In some embodiments, the second part is further provided with a first control valve;

[0014] The first control valve is located between the outlet end of the second part and the second suction member, and is signal-connected to the control member.

[0015] In some embodiments, the liquid nitrogen storage tank also has an exhaust pipe;

[0016] The exhaust pipe is located on the outer wall of the vaporization chamber and communicates with the through hole;

[0017] A second control valve is installed on the exhaust pipe.

[0018] In some embodiments, the heat exchange pipeline is a zigzag or serpentine pipeline, and / or the heat dissipation pipeline is a zigzag or serpentine pipeline.

[0019] In some embodiments, a third control valve is also provided on the cooling circulation pipeline;

[0020] The third control valve is signal-connected to the control component.

[0021] In some embodiments, the number of cooling circulation pipes is the same as the number of vaporization chambers;

[0022] The number of vaporization chambers is one or more, and when there are multiple vaporization chambers, the multiple vaporization chambers are arranged sequentially from top to bottom on the upper part of the storage chamber.

[0023] In some embodiments, the first temperature measuring element includes a first temperature measuring sub-element, a second temperature measuring sub-element, and a third temperature measuring sub-element;

[0024] The first temperature measuring element is located on the housing of the electrical appliance, the second temperature measuring element is located at one end of the heat dissipation pipe, and the third temperature measuring element is located at the other end of the heat dissipation pipe;

[0025] The first temperature measuring component, the second temperature measuring component, and the third temperature measuring component are all signal connected to the control component.

[0026] Secondly, embodiments of this application provide a control method for a vehicle cooling device, the method being executed by the vehicle cooling device as described in the first aspect above, including:

[0027] The control unit acquires the temperature measured by the first temperature measuring element;

[0028] In response to the temperature exceeding a preset temperature, the control unit sends a start signal to both the first suction component and the second suction component to control their activation. This causes the liquid nitrogen in the liquid nitrogen storage tank to flow from the storage chamber into the vaporization chamber through the connecting pipe under the action of the second suction component, and vaporize in the vaporization chamber to cool the coolant in the heat exchange pipe located in the vaporization chamber. Consequently, the coolant circulates under the action of the first suction component to the heat dissipation pipe located in the electrical appliance, thereby achieving cooling and heat dissipation for the electrical appliance.

[0029] Thirdly, embodiments of this application provide a vehicle that includes a cooling device for the vehicle as described in the first aspect above.

[0030] The vehicle cooling device provided in this application embodiment acquires the temperature of the electrical appliance via a first temperature sensor located on the appliance. When the controller determines that the temperature of the appliance is higher than a preset temperature, it activates a first suction component and a second suction component, allowing liquid nitrogen in the storage chamber of the liquid nitrogen storage tank to be drawn from the storage chamber into a vaporization chamber, where it vaporizes. Since liquid nitrogen absorbs heat during vaporization, it lowers the temperature of the coolant in the heat exchange pipes within the vaporization chamber. The vaporized nitrogen gas can then be discharged through a through-hole in the vaporization chamber to prevent excessive pressure within the chamber. Furthermore, since the heat exchange pipes, the first suction component, and the cooling pipes are all located on the cooling circulation pipes, the coolant cooled at the heat exchange pipes can circulate to the cooling pipes within the electrical appliance under the suction action of the first suction component, thus dissipating heat from the appliance.

[0031] Therefore, the vehicle cooling device provided in this application embodiment cools the coolant in the cooling circulation pipe by combining liquid nitrogen cooling, replacing the existing method of direct heat exchange with air. Even in high-temperature environments, it can meet the cooling requirements of the coolant, ensuring that the cooling pipe can efficiently cool the electrical appliances and meet their heat dissipation needs. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of a heat dissipation device for a vehicle provided in an embodiment of this application;

[0034] Figure 2 A schematic diagram of another cooling device for a vehicle provided in an embodiment of this application;

[0035] Figure 3 A flowchart illustrating a control method for a vehicle cooling device provided in this application embodiment;

[0036] Figure 4 A flowchart illustrating another method for controlling a vehicle's cooling device, provided as an embodiment of this application.

[0037] The reference numerals in the figure are respectively:

[0038] 1-Control component; 2-First temperature measuring component; 21-First temperature measuring sub-component; 22-Second temperature measuring sub-component; 23-Third temperature measuring sub-component; 3-Liquid nitrogen storage tank; 31-Storage chamber; 311-Liquid nitrogen; 32-Vaporization chamber; 321-Through hole; 33-Connecting pipe; 331-First part; 332-Second part; 34-Second suction component; 35-First control valve; 36-Exhaust pipe; 37-Second control valve; 4-Cooling circulation pipe; 41-Heat exchange pipe; 42-Heat dissipation pipe; 5-Electrical appliance; 6-First suction component; 7-Third control valve; 8-Fourth control valve; 9-Second temperature measuring component; 10-Third temperature measuring component; 11-Fourth temperature measuring component. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] To meet people's demands for driving comfort and intelligence in vehicles, the number of electrical appliances in vehicles is constantly increasing. These appliances generate heat during use, causing their temperatures to rise. The electronic components within these appliances require suitable temperatures to function properly; otherwise, their performance will be affected. Therefore, when the temperature of these appliances is too high, the vehicle's cooling system is needed to dissipate heat and cool them.

[0042] In related technologies, a heat sink is typically installed on one side of the appliance. Cooling is achieved by the flow of coolant in cooling pipes connected to the heat sink. The flowing coolant carries away heat from the appliance and exchanges heat with the outside air within the pipes after passing through the heat sink, thus cooling the appliance. However, this cooling method is insufficient to meet the heat dissipation requirements of appliances in high-temperature environments.

[0043] Therefore, this application provides a heat dissipation device for vehicles that can quickly meet the heat dissipation needs of electrical appliances in high-temperature environments.

[0044] Figure 1 This is a schematic diagram of a heat dissipation device for a vehicle, provided as an embodiment of this application. See also... Figure 1 The device includes: a control unit 1, a first temperature measuring unit 2, a liquid nitrogen storage tank 3, and a cooling circulation pipeline 4.

[0045] The liquid nitrogen storage tank 3 includes a storage chamber 31 and a vaporization chamber 32. The storage chamber 31 is located at the lower part of the vaporization chamber 32 and is used to contain liquid nitrogen 311. The vaporization chamber 32 is used to vaporize the liquid nitrogen 311. The wall of the vaporization chamber 32 is provided with a through hole 321 that can communicate with the outside, so that the pressure in the vaporization chamber 32 can be released after the liquid nitrogen 311 is vaporized.

[0046] The liquid nitrogen storage tank 3 also has a connecting pipe 33, which connects the storage chamber 31 and the vaporization chamber 32, so that liquid nitrogen 311 can be vaporized from the storage chamber 31 through the connecting pipe 33 to the vaporization chamber 32; a second suction member 34 is provided on the connecting pipe 33 located in the vaporization chamber 32, and the suction capacity of the second suction member 34 can be used to draw liquid nitrogen 311 located in the storage chamber 31 into the vaporization chamber 32 through the connecting pipe 33.

[0047] The cooling circulation pipe 4 is suitable for cooling the vehicle's electrical appliances 5 with coolant. The cooling circulation pipe 4 is provided with a heat exchange pipe 41, a first suction component 6, and a heat dissipation pipe 42 in sequence. The heat exchange pipe 41 is located in the vaporization chamber 32, and the heat dissipation pipe 42 is located inside the electrical appliances 5. By setting the heat exchange pipe 41 in the vaporization chamber 32, the coolant in the heat exchange pipe 41 can exchange heat with the vaporized liquid nitrogen in the vaporization chamber 32, thereby reducing the temperature of the coolant. Then, by using the suction effect of the first suction component 6, the cooled coolant is circulated to the heat dissipation pipe 42 located inside the electrical appliances 5, thereby cooling the electrical appliances 5.

[0048] The first temperature measuring element 2 is located on the electrical appliance 5 and can accurately measure the temperature of the electrical appliance 5.

[0049] The control unit 1 is connected to the first temperature measuring element 2, the first suction element 6, and the second suction element 34 by signal connection, which can realize the acquisition of the temperature of the electrical appliance 5 measured by the first temperature measuring element 2 and the start and stop control of the first suction element 6 and the second suction element 34.

[0050] The working principle of the vehicle cooling device provided in this application embodiment is as follows:

[0051] The temperature of electrical appliance 5 is obtained by the first temperature measuring element 2 located on the vehicle's electrical appliance 5. When the control element 1 determines that the temperature of electrical appliance 5 is greater than the preset temperature, it controls the first suction element 6 and the second suction element 34 to start, so that liquid nitrogen 311 in the storage chamber 31 of the liquid nitrogen storage tank 3 can be drawn from the storage chamber 31 to the vaporization chamber 32, where it is vaporized. Since liquid nitrogen 311 absorbs heat during vaporization, it can reduce the temperature of the coolant in the heat exchange pipe 41 in the vaporization chamber 32. The vaporized nitrogen can be discharged through the through hole 321 on the vaporization chamber 32 to avoid excessive pressure in the vaporization chamber 32. Since the heat exchange pipe 41, the first suction component 6 and the heat dissipation pipe 42 are all located on the cooling circulation pipe 4, the coolant cooled at the heat exchange pipe 41 can circulate to the heat dissipation pipe 42 inside the appliance 5 under the suction action of the first suction component 6, and the heat dissipation pipe 42 is used to dissipate heat from the appliance 5.

[0052] Therefore, the vehicle cooling device provided in this application embodiment cools the coolant in the cooling circulation pipe 4 by combining liquid nitrogen 311 for cooling, replacing the existing method of direct heat exchange through air. Even in high-temperature environments, it can meet the cooling requirements of the coolant and ensure that the cooling pipe 42 can efficiently cool the electrical appliance 5, thus meeting the heat dissipation needs of the electrical appliance 5.

[0053] It should be noted that the vehicle cooling device provided in this application embodiment can be designed with the size of the liquid nitrogen storage tank 3 and the layout of the cooling circulation pipes 4 according to the vehicle's space and heat dissipation requirements. The number of vehicle cooling devices provided in this application embodiment can be one or more. Furthermore, the vehicle cooling device provided in this application embodiment can be used independently to replace the vehicle's radiator system, thereby quickly cooling electrical appliances and reducing the space occupied by the radiator, thus reducing the weight of the vehicle's cooling system; it can also be integrated into existing vehicle radiator cooling systems, especially when the cooling effect of existing radiator cooling systems is poor, enabling rapid cooling of electrical appliances; it can also be combined with air cooling to reduce pipe laying costs.

[0054] The structure of the vehicle cooling device provided in the embodiments of this application will be further described below:

[0055] In this embodiment, the liquid nitrogen storage tank 3 is a carrier for heat exchange.

[0056] In some embodiments, such as Figure 1 As shown, the liquid nitrogen storage tank 3 can be a cylindrical structure with a hollow interior.

[0057] In some embodiments, since the boiling point of liquid nitrogen 311 is -196°C, a vacuum layer is provided in the tank body of the liquid nitrogen storage tank 3 to facilitate the storage of liquid nitrogen 311, thereby achieving the functions of low-temperature storage and heat insulation.

[0058] In some embodiments, the liquid nitrogen storage tank 3 may be made of stainless steel, which has the characteristics of high pressure resistance, corrosion resistance, aging resistance and good heat insulation.

[0059] In this embodiment of the application, the liquid nitrogen storage tank 3 includes a storage chamber 31 and a vaporization chamber 32, wherein the storage chamber 31 is used to provide storage space for liquid nitrogen 311, and the vaporization chamber 32 is used to provide vaporization space for the vaporization of liquid nitrogen 311.

[0060] In some embodiments, the interior of the liquid nitrogen storage tank 3 may have a vaporization chamber 32, such as Figure 1 As shown; it can also have multiple vaporization chambers 32, such as Figure 2 As shown, when there are multiple vaporization chambers 32, the multiple vaporization chambers 32 are arranged sequentially from top to bottom on the upper part of the storage chamber 31.

[0061] Since the function of the vaporization chamber 32 is to provide vaporization space for the vaporization of liquid nitrogen 311, and to cool and dissipate heat from the cooling circulation pipe 4, therefore, as Figure 2 As shown, the number of cooling circulation pipes 4 is the same as the number of vaporization chambers 32, in order to meet the cooling requirements of the cooling circulation pipes 4.

[0062] For example, see Figure 2 The liquid nitrogen storage tank 3 has two vaporization chambers 32 and two cooling circulation pipes 4.

[0063] In some embodiments, to better meet the pressure relief requirements of the vaporization chamber 32, see [reference needed]. Figure 1 The liquid nitrogen storage tank 3 also has an exhaust pipe 36.

[0064] The exhaust pipe 36 is located on the outer wall of the vaporization chamber 32 and is connected to the through hole 321. A second control valve 37 is provided on the exhaust pipe 36. After the second control valve 37 is opened, it can release pressure from the vaporization chamber 32.

[0065] In this embodiment, the liquid nitrogen storage tank 3 also has a connecting pipe 33, which serves as a flow channel to provide a flow path for the liquid nitrogen 311, allowing the liquid nitrogen 311 to flow along the connecting pipe 33 and be sprayed outward from the vaporization chamber 32 after vaporization.

[0066] In some embodiments, see Figure 2 The connecting pipe 33 includes a first part 331 and a second part 332.

[0067] The first part 331 is located in the liquid nitrogen 311 in the storage chamber 31 and is used to guide the liquid nitrogen 311; the second part 332 is located in the vaporization chamber 32 and is used to guide the ejection of liquid nitrogen 311.

[0068] The second part 332 is provided with a second suction member 34, which is used to draw liquid nitrogen 311 from the storage chamber 31 to the vaporization chamber 32, so that the liquid nitrogen 311 is vaporized in the vaporization chamber 32.

[0069] In some embodiments, the first part 331 and the second part 332 have the same pipe diameter.

[0070] In some embodiments, see Figure 2 When there are multiple vaporization chambers 32, each vaporization chamber 32 is connected to the storage chamber 31 through a connecting pipe 33.

[0071] The second part 332 may have the same number of branches as the vaporization chamber 32, with one branch corresponding to one vaporization chamber 32, and each branch is provided with a second suction element 34.

[0072] In some embodiments, the second suction element 34 may be an electric motor or a pump.

[0073] In some embodiments, see Figure 1 The second part 332 is also equipped with a first control valve 35.

[0074] The first control valve 35 is located between the outlet end of the second part 332 and the second suction member 34, and is signal-connected to the control member 1.

[0075] With this configuration, the opening or closing of the first control valve 35 is controlled by the control component 1, thereby controlling the spraying of liquid nitrogen 311.

[0076] Furthermore, the first control valve 35 includes multiple opening modes, each with a different opening degree. In other words, the first control valve 35 can achieve multiple different opening degree controls to control the amount of liquid nitrogen 311 sprayed out, effectively avoiding waste of liquid nitrogen 311 while meeting the cooling requirements of the heat exchange pipeline 41.

[0077] In this embodiment, the cooling circulation pipe 4 is used to cool the electrical appliance 5. The cooling circulation pipe 4 is provided with a heat exchange pipe 41 and a heat dissipation pipe 42. The heat exchange pipe 41 is located in the vaporization chamber 32 and is used for heat exchange within the vaporization chamber 32. The heat dissipation pipe 42 is located inside the electrical appliance 5 and is used for heat exchange within the electrical appliance 5.

[0078] In some embodiments, see Figure 2 Multiple electrical appliances 5 can be installed on a cooling circulation pipe 4 to achieve heat dissipation and cooling of multiple electrical appliances 5.

[0079] In some embodiments, the electrical appliance 5 may be a storage battery, generator, engine, etc., and is not specifically limited in the embodiments of this application.

[0080] In some embodiments, see Figure 1 The heat exchange pipeline 41 can be a zigzag or serpentine pipeline.

[0081] By setting the heat exchange pipe 41 as a zigzag or serpentine pipe, the contact area between the heat exchange pipe 41 and the liquid nitrogen 311 is increased, thereby achieving faster cooling of the coolant in the heat exchange pipe 41.

[0082] In some embodiments, the heat dissipation pipe 42 can be a zigzag or serpentine pipe.

[0083] By setting the heat dissipation pipe 42 as a zigzag or serpentine pipe, the contact area between the heat dissipation pipe 42 and the air inside the appliance 5 is increased, so that the coolant in the heat dissipation pipe 42 can quickly remove the heat inside the appliance 5.

[0084] In some embodiments, to control the flow rate of coolant within the heat dissipation pipe 42, see [reference needed]. Figure 1 A third control valve 7 is installed on the cooling circulation pipeline 4, and the third control valve 7 is connected to the control component 1 via signal.

[0085] By installing a third control valve 7 on the cooling circulation pipe 4 and using the control component 1, the flow of the cooling circulation pipe 4 can be controlled.

[0086] For example, see Figure 2 When a first electrical appliance 51 and a second electrical appliance 52 are installed on a cooling pipe 4, if the temperature of the first electrical appliance 51 is greater than the preset temperature, while the temperature of the second electrical appliance 52 is less than or equal to the preset temperature, it means that only the first electrical appliance 51 needs to be cooled, while the second electrical appliance 52 does not need to be cooled. At this time, the control unit 1 sends an opening signal only to the third control valve 7 and the first suction unit 6 of the pipe where the first electrical appliance 51 is located, so that the coolant will only flow into the heat dissipation pipe 42 of the first electrical appliance 51 and will not flow into the heat dissipation pipe 42 of the second electrical appliance 52. While achieving heat dissipation and cooling of the first electrical appliance 51, it ensures that the second electrical appliance 52 will not be affected by the low temperature.

[0087] Furthermore, the third control valve 7 includes multiple opening modes, each with a different opening degree, enabling the third control valve 7 to achieve multiple different opening degree controls to control the flow rate of coolant in the cooling circulation pipe 4.

[0088] In some embodiments, the first suction element 6 may be an electric motor or a pump.

[0089] In some embodiments, see Figure 2 A fourth control valve 8 is also installed on the cooling circulation pipe 4, and the fourth control valve 8 is connected to the control component 1 via a signal.

[0090] By installing a fourth control valve 8 on the cooling circulation pipe 4, and using the control component 1 in conjunction with the third control valve 7, the flow rate of coolant in the heat dissipation pipe 42 can be controlled.

[0091] It is understood that in the vehicle cooling device provided in the embodiments of this application, the first control valve 35, the second control valve 37, the third control valve 7 and the fourth control valve 8 are normally closed, and the valve bodies are opened or closed only after receiving a start signal and a stop signal.

[0092] In this embodiment, the control unit 1 is used to collect and control information from each device.

[0093] In some embodiments, the control unit 1 includes a processor, a signal receiver, and a signal transmitter. Both the signal receiver and the signal transmitter are connected to the processor.

[0094] For example, when the processor receives a temperature signal from the first temperature sensor 2, it can obtain the temperature of the appliance 5 by analyzing and processing the temperature signal. By judging the relationship between the temperature of the appliance 5 and the preset temperature, it determines whether to start the second suction device 34 and the first suction device 6. When the temperature of the appliance 5 is greater than the preset temperature, it is determined that the second suction device 34 and the first suction device 6 need to be started. At this time, the processor sends a start signal to both the second suction device 34 and the first suction device 6 through the signal transmitter to control the second suction device 34 and the first suction device 6 to start.

[0095] The preset temperature can be set in the processor.

[0096] It should be noted that the preset temperature can be selectively set by technicians based on the maximum operating temperature of appliance 5, as long as the preset temperature is lower than the maximum operating temperature.

[0097] For example, when the maximum operating temperature of appliance 5 is 65℃, the preset temperature can be 60℃. That is to say, when the temperature of appliance 5 measured by the first temperature measuring element 2 is greater than 60℃, appliance 5 needs to be cooled.

[0098] In some embodiments, the first temperature measuring element 2 may be a temperature sensor.

[0099] In some embodiments, see Figure 1 The first temperature measuring element 2 includes a first temperature measuring sub-element 21, a second temperature measuring sub-element 22, and a third temperature measuring sub-element 23.

[0100] The first temperature measuring component 21 is located on the housing of the electrical appliance 5, the second temperature measuring component 22 is located at one end of the heat dissipation pipe 42, and the third temperature measuring component 23 is located at the other end of the heat dissipation pipe 42; the first temperature measuring component 21, the second temperature measuring component 22 and the third temperature measuring component 23 are all connected to the control component 1 via signal.

[0101] With this setup, the temperature of the appliance 5's casing is measured by the first temperature measuring element 21, the temperature of the inlet or outlet of the heat dissipation pipe 42 is measured by the second temperature measuring element 22, and the temperature of the outlet or inlet of the heat dissipation pipe 42 is measured by the third temperature measuring element 23.

[0102] It is understandable that when the second temperature measuring element 22 is located at the liquid inlet end of the heat dissipation pipe 42, the third temperature measuring element 23 is located at the liquid outlet end of the heat dissipation pipe 42; when the second temperature measuring element 22 is located at the liquid outlet end of the heat dissipation pipe 42, the third temperature measuring element 23 is located at the liquid inlet end of the heat dissipation pipe 42.

[0103] The control unit 1 can determine the opening degree of the first control valve 35 and the second control valve 37 by calculating the difference between the temperature of the casing of the electrical appliance 5 and the preset temperature; and can control the opening degree of the third control valve 7 and the fourth control valve 8 by calculating the difference between the liquid inlet and liquid outlet of the heat dissipation pipe 42.

[0104] In some embodiments, the opening modes of the first control valve 35 include a first opening mode, a second opening mode, and a third opening mode, wherein the opening degree corresponding to the first opening mode is greater than the opening degree corresponding to the second opening mode, the opening degree corresponding to the second opening mode is greater than the opening degree corresponding to the third opening mode, and the first opening mode is a fully open mode; the opening modes of the second control valve 37 include a fourth opening mode, a fifth opening mode, and a sixth opening mode, wherein the opening degree corresponding to the fourth opening mode is greater than the opening degree corresponding to the fifth opening mode, the opening degree corresponding to the fifth opening mode is greater than the opening degree corresponding to the sixth opening mode, and the fourth opening mode is a fully open mode; the opening modes of the third control valve 7 include a seventh opening mode and an eighth opening mode, wherein the opening degree corresponding to the seventh opening mode is greater than the opening degree corresponding to the eighth opening mode, and the seventh opening mode is a fully open mode; the opening modes of the fourth control valve 8 include a ninth opening mode and a tenth opening mode, wherein the opening degree corresponding to the ninth opening mode is greater than the opening degree corresponding to the tenth opening mode, and the ninth opening mode is a fully open mode.

[0105] When the temperature difference between the casing of appliance 5 and the preset temperature is greater than 10℃, the controller 1 determines the opening mode of the first control valve 35 to be the first opening mode and the opening mode of the second control valve 37 to be the fourth opening mode. At this time, the vaporization amount of liquid nitrogen 311 is the largest, and the pressure discharge rate in the vaporization chamber 32 is the fastest. When the temperature difference between the casing of appliance 5 and the preset temperature is greater than 5℃ and less than 10℃, the controller 1 determines the opening mode of the first control valve 35 to be the second opening mode and the opening mode of the second control valve 37 to be the fifth opening mode. At this time, the vaporization amount of liquid nitrogen 311 is relatively large, and the pressure discharge rate in the vaporization chamber 32 is relatively fast. When the temperature difference between the casing and the preset temperature is greater than 0℃ and less than 5℃, the controller 1 determines the opening mode of the first control valve 35 to be the third opening mode and the opening mode of the second control valve 37 to be the sixth opening mode. At this time, the vaporization amount of liquid nitrogen 311 is relatively small, and the pressure discharge rate in the vaporization chamber 32 is relatively slow.

[0106] When the temperature difference between the inlet and outlet of the heat dissipation pipe 42 is greater than 5°C, the controller 1 determines the opening mode of the third control valve 7 to be the seventh opening mode and the opening mode of the fourth control valve 8 to be the ninth opening mode. At this time, the flow rate in the cooling circulation pipe 4 is relatively large. When the temperature difference between the inlet and outlet of the heat dissipation pipe 42 is greater than 0°C and less than 5°C, the controller 1 determines the opening mode of the third control valve 7 to be the eighth opening mode and the opening mode of the fourth control valve 8 to be the tenth opening mode. At this time, the flow rate in the cooling circulation pipe 4 is normal.

[0107] Based on the above structure, in order to determine the cooling status of the heat exchange pipeline 41 and simultaneously achieve precise control of the first control valve 35, see [reference needed]. Figure 2 A second temperature measuring element 9 and a third temperature measuring element 10 are respectively provided at both ends of the heat exchange pipeline 41, wherein the second temperature measuring element 9 and the third temperature measuring element 10 are both connected to the control element 1 for signal transmission.

[0108] With this configuration, the inlet and outlet temperatures of the heat exchange pipeline 41 can be measured using the second temperature measuring element 9 and the third temperature measuring element 10, and then sent to the control element 1. This allows the control element 1 to determine the heat exchange status of the heat exchange pipeline 41 based on the inlet and outlet temperatures of the heat exchange pipeline 41.

[0109] Furthermore, in order to obtain the temperature within the vaporization chamber 32, see [link to relevant documentation]. Figure 2 A fourth temperature measuring element 11 is installed in the vaporization chamber 32, and the fourth temperature measuring element 11 is connected to the control element 9.

[0110] With this configuration, the fourth temperature measuring element 11 can measure the temperature inside the vaporization chamber 32 and send it to the control element 1, so that the control element 1 can determine the heat exchange status between the vaporized liquid nitrogen 311 and the heat exchange pipeline 41 based on the liquid inlet temperature, liquid outlet temperature and the temperature inside the vaporization chamber 32 of the heat exchange pipeline 41.

[0111] This application also provides a control method for a vehicle cooling device, which is used to control the vehicle cooling device as described in the above embodiments, and is executed by the device. See [link to relevant documentation]. Figure 3 The method includes the following steps:

[0112] Step 301: Control unit 1 acquires the temperature measured by the first temperature measuring element 2.

[0113] The temperature in question is the temperature of the appliance 5 measured in real time by the first temperature measuring element 2.

[0114] In step 302, in response to the temperature being higher than the preset temperature, the control unit 1 sends a start signal to both the first suction unit 6 and the second suction unit 34 to control the first suction unit 6 and the second suction unit 34 to start. This causes the liquid nitrogen 311 in the liquid nitrogen storage tank 3 to enter the vaporization chamber 32 from the storage chamber 31 through the connecting pipe 33 under the action of the second suction unit 34, and vaporize in the vaporization chamber 32 to cool the coolant in the heat exchange pipe 42 in the vaporization chamber 32. This allows the coolant to circulate to the heat dissipation pipe 42 of the electrical appliance 5 under the action of the first suction unit 6, thereby achieving cooling and heat dissipation for the electrical appliance 5.

[0115] The control method for a vehicle cooling device provided in this application embodiment obtains the temperature of the electrical appliance 5 measured by the first temperature measuring element 21 through the control element 1. When it is determined that the temperature of the electrical appliance 5 is greater than a preset temperature, the first suction element 6 and the second suction element 34 are activated. This causes the liquid nitrogen 311 in the liquid nitrogen storage tank 3 to enter the vaporization chamber 32 from the storage chamber 31 through the connecting pipe 33 under the action of the second suction element 34, and vaporize in the vaporization chamber 32 to cool the coolant in the heat exchange pipe 42 located in the vaporization chamber 32. Then, under the action of the first suction element 6, the coolant circulates to the heat dissipation pipe 42 of the electrical appliance 5, thereby achieving cooling of the electrical appliance 5. This method cools the coolant in the cooling circulation pipe by combining liquid nitrogen cooling, replacing the existing method of direct air heat exchange. Even in high-temperature environments, it can meet the cooling requirements of the coolant, ensuring that the heat dissipation pipe can efficiently cool the electrical appliance and meet its heat dissipation needs.

[0116] Figure 4 A flowchart illustrating another control method for a vehicle's cooling system, provided as an embodiment of this application. This method is applied to, for example... Figure 2 The cooling system shown is used in a vehicle and is operated by this device. The following example illustrates the control of two electrical components in a cooling circuit, where the first component is 51 and the second component is 52. (See attached image.) Figure 4 This method includes the following steps:

[0117] Step 401: The control unit 1 acquires the temperatures measured by the first temperature measuring sub-component 21, the second temperature measuring sub-component 2, and the third temperature measuring sub-component 23 of the first electrical appliance 51, and the temperatures measured by the first temperature measuring sub-component 21, the second temperature measuring sub-component 2, and the third temperature measuring sub-component 23 of the second electrical appliance 52.

[0118] Among them, the first temperature measuring component 21 measures the temperature of the appliance's casing, the second temperature measuring component 22 measures the temperature of the liquid inlet of the heat dissipation pipe 42, and the third temperature measuring component 23 measures the temperature of the liquid outlet of the heat dissipation pipe 42.

[0119] In step 402, in response to the fact that the temperature of the first temperature measuring component 21 of the first electrical appliance 51 and the temperature of the first temperature measuring component 21 of the second electrical appliance 52 are both greater than the preset temperature, the control unit 1 sends a start signal to the second suction component 34, the first suction component 6 of the pipeline where the first electrical appliance 51 is located, and the first suction component 6 of the pipeline where the second electrical appliance 52 is located, and sends an open signal to the fourth control valve 8, the third control valve 7 of the pipeline where the first electrical appliance 51 is located, and the third control valve 7 of the pipeline where the second electrical appliance 52 is located.

[0120] By sending start signals to the second suction component 34, the first suction component 6 in the pipeline where the first electrical appliance 51 is located, and the first suction component 6 in the pipeline where the second electrical appliance 52 is located, and sending opening signals to the third control valve 7 and the fourth control valve 8 in the pipeline where the first electrical appliance 51 is located, as well as the third control valve 7 and the fourth control valve 8 in the pipeline where the second electrical appliance 52 is located, the start of the second suction component 34, the first suction component 6 in the pipeline where the first electrical appliance 51 is located, and the first suction component 6 in the pipeline where the second electrical appliance 52 is located can be controlled. The opening of the fourth control valve 8, the third control valve 7 in the pipeline where the first electrical appliance 51 is located, and the third control valve 7 in the pipeline where the second electrical appliance 52 is located can be controlled, so that the coolant can flow through the interior of the first electrical appliance 51 and the second electrical appliance 52 to dissipate heat and cool the first electrical appliance 51 and the second electrical appliance 52.

[0121] In step 403, in response to the temperature of the first temperature measuring component 21 of the first electrical appliance 51 being greater than the preset temperature and the temperature of the first temperature measuring component 21 of the second electrical appliance 52 being less than the preset temperature, the control unit 1 sends a start signal to the second suction component 34 and the first suction component 6 in the pipeline where the first electrical appliance 51 is located, and sends an open signal to the fourth control valve 8 and the third control valve 7 in the pipeline where the first electrical appliance 51 is located.

[0122] The control unit 1 sends a start signal to the second suction unit 34 and the first suction unit 6 in the pipeline where the first electrical appliance 51 is located, and sends an open signal to the fourth control valve 8 and the third control valve 7 in the pipeline where the first electrical appliance 51 is located. However, since no start signal is sent to the first suction unit 6 in the pipeline where the second electrical appliance 52 is located, and no open signal is sent to the third control valve 7 in the pipeline where the second electrical appliance 52 is located, the second suction unit 6 and the third control valve 7 in the pipeline where the second electrical appliance 52 is located are in a closed state. That is to say, the coolant will not flow through the interior of the second electrical appliance 52, but will only flow through the interior of the first electrical appliance 51 to dissipate heat and cool the first electrical appliance 51.

[0123] In step 404, in response to the temperature of the first temperature measuring component 21 of the first electrical appliance 51 being lower than the preset temperature and the temperature of the first temperature measuring component 21 of the second electrical appliance 52 being higher than the preset temperature, the control unit 1 sends a start signal to the second suction component 34 and the first suction component 6 in the pipeline where the second electrical appliance 51 is located, and sends an open signal to the fourth control valve 8 and the third control valve 7 in the pipeline where the second electrical appliance 51 is located.

[0124] The control unit 1 sends a start signal to the second suction unit 34 and the first suction unit 6 in the pipeline where the second electrical appliance 51 is located, and sends an open signal to the fourth control valve 8 and the third control valve 7 in the pipeline where the second electrical appliance 51 is located. However, since no start signal is sent to the first suction unit 6 in the pipeline where the first electrical appliance 52 is located, and no open signal is sent to the third control valve 7 in the pipeline where the first electrical appliance 52 is located, the second suction unit 6 and the third control valve 7 in the pipeline where the first electrical appliance 52 is located are in the closed state. That is to say, the coolant will not flow through the interior of the first electrical appliance 52, but will only flow through the interior of the second electrical appliance 51 to dissipate heat and cool the second electrical appliance 51.

[0125] Step 405: When the temperature difference between the first temperature measuring element 21 of the first electrical appliance 51 and / or the temperature difference between the first temperature measuring element 21 of the second electrical appliance 52 and the preset temperature is greater than 10°C, the control element 1 determines that the opening mode of the first control valve 35 is the first opening mode and the opening mode of the second control valve 37 is the fourth opening mode.

[0126] At this point, the vaporization rate of liquid nitrogen 311 is at its maximum, and the pressure relief rate in vaporization chamber 32 is at its fastest.

[0127] Step 406: When the temperature difference between the first temperature measuring element 21 of the first electrical appliance 51 and / or the temperature difference between the first temperature measuring element 21 of the second electrical appliance 52 and the preset temperature is greater than 5°C and less than 10°C, the control element 1 determines that the opening mode of the first control valve 35 is the second opening mode and the opening mode of the second control valve 37 is the fifth opening mode.

[0128] At this time, the amount of liquid nitrogen 311 vaporized is relatively large, and the pressure relief rate in the vaporization chamber 32 is relatively fast.

[0129] Step 407: When the temperature difference between the first temperature measuring element 21 of the first electrical appliance 51 and / or the first temperature measuring element 21 of the second electrical appliance 52 and the preset temperature is greater than 0°C and less than 5°C, the control element 1 determines the opening mode of the first control valve 35 as the third opening mode and the opening mode of the second control valve 37 as the sixth opening mode.

[0130] At this time, the vaporization rate of liquid nitrogen 311 is relatively small, and the depressurization rate in the vaporization chamber 32 is relatively slow.

[0131] This application also provides a vehicle that includes a cooling device for a vehicle as described in the above embodiments.

[0132] By employing a cooling system for vehicles, the vehicle can meet the heat dissipation requirements of its internal electrical appliances in high-temperature environments.

[0133] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0134] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0135] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A cooling device for a vehicle, characterized in that, The device includes: a control unit (1), at least two first temperature measuring elements (2), a liquid nitrogen storage tank (3), and a cooling circulation pipeline (4). The liquid nitrogen storage tank (3) includes a storage chamber (31) and a vaporization chamber (32). The storage chamber (31) is located at the lower part of the vaporization chamber (32) and is used to contain liquid nitrogen (311). The vaporization chamber (32) has a through hole (321) on its wall that can communicate with the outside. The liquid nitrogen storage tank (3) also has a connecting pipe (33) that connects the storage chamber (31) and the vaporization chamber (32). A second suction device (34) is provided on the connecting pipe (33) located in the vaporization chamber (32). The cooling circulation pipe (4) is adapted to cool at least two electrical appliances (5) of the vehicle through coolant. The cooling circulation pipe (4) is provided with a heat exchange pipe (41), at least two first suction components (6) and at least two heat dissipation pipes (42) in sequence. The heat dissipation pipes (42), the first suction components (6), the first temperature measuring components (2) correspond one-to-one with the electrical appliances (5). The heat exchange pipeline (41) is located in the vaporization chamber (32); The heat dissipation pipe (42) is located inside the electrical appliance (5), and the heat dissipation pipe (42) is connected in parallel with the cooling circulation pipe (4); The first suction component (6) is located on the corresponding heat dissipation pipe (42); The first temperature measuring element (2) is located on the electrical appliance (5); A third control valve (7) is provided on the heat dissipation pipe (42). The third control valve (7) includes multiple opening modes, and each opening mode corresponds to a different opening, so that the third control valve (7) can realize multiple different opening control to control the flow rate of coolant in the heat dissipation pipe (42). A fourth control valve (8) is provided on the cooling circulation pipeline (4); The control unit (1) is signal-connected to the first temperature measuring unit (2), the first suction unit (6), the second suction unit (34), the third control valve (7), and the fourth control valve (8).

2. The vehicle cooling device according to claim 1, characterized in that, The connecting pipe (33) includes a first part (331) and a second part (332); The first part (331) is located in liquid nitrogen (311) within the storage chamber (31); The second part (332) is located inside the vaporization chamber (32), and the second suction member (34) is provided on the second part (332).

3. The vehicle cooling device according to claim 2, characterized in that, The second part (332) is also provided with a first control valve (35); The first control valve (35) is located between the outlet end of the second part (332) and the second suction member (34), and is signal-connected to the control member (1).

4. The vehicle cooling device according to claim 1, characterized in that, The liquid nitrogen storage tank (3) also has an exhaust pipe (36). The exhaust pipe (36) is located on the outer wall of the vaporization chamber (32) and is connected to the through hole (321); A second control valve (37) is provided on the exhaust pipe (36).

5. The vehicle cooling device according to claim 1, characterized in that, The heat exchange pipeline (41) is a zigzag or serpentine pipeline, and / or the heat dissipation pipeline (42) is a zigzag or serpentine pipeline.

6. The vehicle cooling device according to claim 1, characterized in that, The number of cooling circulation pipes (4) is the same as the number of vaporization chambers (32); The number of vaporization chambers (32) is one or more, and when the number of vaporization chambers (32) is multiple, the multiple vaporization chambers (32) are arranged sequentially from top to bottom on the upper part of the storage chamber (31).

7. The vehicle cooling device according to claim 1, characterized in that, The first temperature measuring element (2) includes a first temperature measuring sub-element (21), a second temperature measuring sub-element (22) and a third temperature measuring sub-element (23); The first temperature measuring component (21) is located on the housing of the electrical appliance (5), the second temperature measuring component (22) is located at one end of the heat dissipation pipe (42), and the third temperature measuring component (23) is located at the other end of the heat dissipation pipe (42). The first temperature measuring component (21), the second temperature measuring component (22), and the third temperature measuring component (23) are all signal connected to the control component (1).

8. A control method for a vehicle's cooling system, characterized in that, The method is performed by a vehicle cooling device as described in any one of claims 1-7, comprising: The control unit (1) acquires the temperature measured by the first temperature measuring unit (2); In response to the temperature being greater than the preset temperature, the control unit (1) sends a start signal to both the first suction unit (6) and the second suction unit (34) to control the first suction unit (6) and the second suction unit (34) to start, so that the liquid nitrogen (311) in the liquid nitrogen storage tank (3) enters the vaporization chamber (32) from the storage chamber (31) through the connecting pipe (33) under the action of the second suction unit (34), and vaporizes in the vaporization chamber (32) to cool the coolant in the heat exchange pipe (41) in the vaporization chamber (32), thereby causing the coolant to circulate to the heat dissipation pipe (42) of the electrical appliance (5) under the action of the first suction unit (6), thereby achieving cooling and heat dissipation of the electrical appliance (5).

9. A vehicle, characterized in that, The vehicle includes a cooling device for a vehicle as described in any one of claims 1-7.

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