Vehicle refrigeration method and system, vehicle and storage medium

Abstract

The invention relates to a vehicle refrigeration method and system, a vehicle and a storage medium, and belongs to the technical field of vehicles, the method is applied to the vehicle, the vehicle comprises a vaporizer used for vaporizing liquefied fuel gas, the vaporizer comprises a secondary refrigerant inlet and a secondary refrigerant outlet, and the secondary refrigerant outlet is connected with a refrigeration core; the method comprises the steps that in response to a vehicle refrigeration instruction, the valve opening degree of a secondary refrigerant inlet is controlled according to the environment temperature; and a secondary refrigerant in the vaporizer is controlled to flow to the refrigeration core body from the secondary refrigerant outlet after heat exchange with the liquefied fuel gas, and the vehicle is refrigerated through the refrigeration core body. The cold energy in the secondary refrigerant is directly used for refrigerating the vehicle, and the intermediate cold storage step is omitted, so that the utilization efficiency of the cold energy stored in the liquefied fuel gas can be improved, and the air consumption of an air conditioner is reduced. And meanwhile, the refrigerating speed and the refrigerating temperature are adjusted by adjusting the opening degree of the secondary refrigerant inlet valve, so that the refrigerating effect better meets the requirements of users.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle refrigeration method, system, vehicle and storage medium. BACKGROUND

[0002] For vehicles using liquefied gas as fuel, the cold energy stored in the liquefied gas can be used to replace the air conditioner to provide cold energy to the cab. Figure 1 As shown in the figure, a schematic diagram of using the cold energy stored in the liquefied gas for vehicle refrigeration in the prior art is shown. When the vehicle is powered on and the air conditioner is not needed to be used for refrigeration: electromagnetic valve V1 is opened, electromagnetic valve V2 is closed, liquefied natural gas (LNG) tank outlet ① is discharged, LNG liquid directly passes through the heat dissipation pipe C3 in the vaporizer, exchanges heat with the heat carrier L2 (circulating when the engine is running) in the vaporizer to vaporize, and then enters the buffer tank through electromagnetic valve V1.

[0003] When the vehicle is powered on and the air conditioner is needed to be used: electromagnetic valve V1 is closed, electromagnetic valve V2 is opened, LNG tank outlet ① is discharged, LNG liquid exchanges heat with medium L1 in the cold taking device through heat dissipation pipe C1, and then flows to heat dissipation pipe C4 in the vaporizer for vaporization, and enters the buffer tank through electromagnetic valve V2. At the same time, the LNG liquid passes through heat dissipation pipe C1 to continuously cool medium L1 in the cold taking device. Medium L1 further cools the heat carrier in heat dissipation pipe C2 in the cold taking device and circulates to provide cold energy to the cab.

[0004] The prior art uses three-phase medium (LNG liquid, medium L1 and heat carrier in heat dissipation pipe C2) for intermediate cold storage, which has the problems of slow heat exchange and low efficiency, so that the air consumption is not obviously reduced when the air conditioner is used in summer. SUMMARY

[0005] Therefore, it is necessary to provide a vehicle refrigeration method, system, vehicle and storage medium to solve the problems of slow heat exchange and low efficiency when using the cold energy in the liquefied gas for refrigeration in the prior art.

[0006] In order to solve the above problems, in a first aspect, the present application provides a vehicle refrigeration method applied to a vehicle, wherein the vehicle comprises a vaporizer for vaporizing liquefied gas, the vaporizer comprises a heat carrier inlet and a heat carrier outlet, and the heat carrier outlet is connected with a refrigeration core; the method comprises: controlling the valve opening degree of the heat carrier inlet according to the environmental temperature in response to a vehicle refrigeration instruction; controlling the heat carrier in the vaporizer to flow from the heat carrier outlet to the refrigeration core after heat exchange with the liquefied gas, and refrigerating the vehicle through the refrigeration core.

[0007] In a possible implementation, the controlling the valve opening degree of the secondary refrigerant inlet according to the ambient temperature comprises: determining a target temperature interval in which the ambient temperature is located according to a plurality of preset temperature intervals; determining a target valve opening degree corresponding to the target temperature interval according to a preset mapping relationship between the temperature interval and the valve opening degree of the secondary refrigerant inlet, and controlling the valve opening degree of the secondary refrigerant inlet to be the target valve opening degree.

[0008] In a possible implementation, the vaporizer comprises a fuel gas outlet connected with a fuel gas buffer tank, and the method further comprises: when the fuel gas temperature in the fuel gas buffer tank is invalid or less than or equal to a preset fuel gas temperature threshold, preferentially controlling the valve of the secondary refrigerant inlet to be fully opened; the controlling the valve opening degree of the secondary refrigerant inlet according to the ambient temperature comprises: when the fuel gas temperature in the fuel gas buffer tank is valid and greater than the preset fuel gas temperature threshold, controlling the valve opening degree of the secondary refrigerant inlet according to the ambient temperature.

[0009] In a possible implementation, the vehicle further comprises an engine cooling system and an engine, and the method further comprises: when the fuel gas temperature in the fuel gas buffer tank is less than the preset fuel gas temperature threshold, guiding the cooling liquid in the engine cooling system that has exchanged heat with the engine from the secondary refrigerant inlet into the secondary refrigerant.

[0010] In a possible implementation, the vehicle further comprises a cooling supplement module through which the secondary refrigerant flows from the secondary refrigerant outlet to the refrigeration core when the secondary refrigerant flows from the secondary refrigerant outlet to the refrigeration core, and the method further comprises: determining a target secondary refrigerant outlet temperature according to the ambient temperature; when the real-time temperature of the secondary refrigerant outlet is greater than the target secondary refrigerant outlet temperature, cooling the secondary refrigerant through the cooling supplement module.

[0011] In a possible implementation, the method further comprises: controlling the secondary refrigerant in the refrigeration core to be transported back to the vaporizer.

[0012] In a possible implementation, the method further comprises: after the vehicle is powered on and before the vehicle refrigeration instruction is received, preferentially controlling the valve of the secondary refrigerant inlet to be fully opened.

[0013] In a second aspect, the present application further provides a vehicle refrigeration system applied to a vehicle, wherein the vehicle comprises a vaporizer for vaporizing liquefied gas, the vaporizer comprising a carrier refrigerant inlet and a carrier refrigerant outlet, and the carrier refrigerant outlet is connected to a refrigeration core; the system comprises: a valve opening degree control module for controlling the valve opening degree of the carrier refrigerant inlet according to the ambient temperature in response to a vehicle refrigeration instruction; a refrigeration module for controlling the carrier refrigerant in the vaporizer to flow from the carrier refrigerant outlet to the refrigeration core after heat exchange with the liquefied gas, and the vehicle is refrigerated by the refrigeration core.

[0014] In a third aspect, the present application further provides a vehicle comprising a memory and a processor, wherein the memory is configured to store a program; and the processor is coupled to the memory and configured to execute the program stored in the memory to implement the steps of any of the vehicle refrigeration methods described above.

[0015] In a fourth aspect, the present application further provides a computer readable storage medium for storing a computer readable program, wherein the program or instructions are executed by a processor to implement the steps of any of the vehicle refrigeration methods described above.

[0016] The present application has the following advantages: The present application connects the carrier refrigerant outlet of the vaporizer to the refrigeration core, and controls the carrier refrigerant in the vaporizer to flow from the carrier refrigerant outlet to the refrigeration core after heat exchange with the liquefied gas in response to a vehicle refrigeration instruction, and the vehicle is refrigerated by the refrigeration core, i.e. only two-phase medium (liquefied gas and carrier refrigerant in the vaporizer) is used to refrigerate the vehicle, and the intermediate cold storage step is omitted, so that the utilization efficiency of the cold energy stored in the liquefied gas can be improved, and the air consumption of the air conditioner can be reduced.

[0017] In addition, since the cold energy in the carrier refrigerant is directly used to refrigerate the vehicle, the present application further adjusts the valve opening degree of the carrier refrigerant inlet according to the ambient temperature to control the cold energy in the carrier refrigerant, so as to adjust the refrigeration speed and refrigeration temperature, and the refrigeration effect is more suitable for user needs. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a schematic diagram of a prior art using the cold energy stored in liquefied gas to refrigerate a vehicle. Figure 2 A schematic flowchart of an embodiment of the vehicle cooling method provided by the present invention; Figure 3 A schematic diagram of a vehicle structure provided by the present invention; Figure 4 A schematic flowchart of another embodiment of the vehicle cooling method provided by the present invention; Figure 5 A schematic diagram of a vehicle refrigeration principle provided by the present invention; Figure 6 A schematic diagram of a structure of an embodiment of the vehicle refrigeration system provided by the present invention; Figure 7 A schematic diagram of an embodiment of the vehicle provided by the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of the embodiments of this invention, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0022] In the embodiments of this invention, the terms "first," "second," etc., are used to distinguish similar objects, and are not used to describe a specific order or sequence, nor to indicate or imply their relative importance or implicitly specify the number of technical features indicated. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, and the number of objects is not limited; for example, the first object can be one or more.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Reference Figure 2 This diagram illustrates a flow chart of an embodiment of the vehicle refrigeration method provided by the present invention. The method is applied to a vehicle, which includes a vaporizer for vaporizing liquefied natural gas. The vaporizer includes a refrigerant inlet and a refrigerant outlet, with the refrigerant outlet connected to a refrigeration core. In one example, the vehicle structure is as follows... Figure 3 As shown, the vehicle includes a vaporizer, which includes an LNG liquid delivery pipeline, a cooling water inlet (refrigerant inlet), and an air conditioning water inlet (refrigerant outlet). The cooling water inlet includes a water valve DZ for regulating the inlet flow rate of the cooling water. The air conditioning water inlet is connected to a cooling core, which is used to cool the cab. Figure 2 The method flow shown includes: S201, in response to the vehicle's cooling command, controls the valve opening at the refrigerant inlet according to the ambient temperature.

[0025] Liquefied gas can be LNG, liquefied hydrogen, or other gases that have been cooled and liquefied.

[0026] The refrigerant in the vaporizer is the reagent used to exchange heat with the liquefied gas, thereby raising the temperature and vaporizing the liquefied gas. Specific refrigerants can be pure water, aqueous ethylene glycol solution, or aqueous propylene glycol solution, etc.

[0027] Ambient temperature refers to the temperature inside a vehicle, which can be detected by a temperature detection device installed inside the vehicle.

[0028] When the vehicle is powered on and receives the user's cooling request, it can control the opening of the refrigerant inlet valve based on the ambient temperature. The higher the ambient temperature, the higher the cooling demand, and therefore the larger the valve opening can be. For example, refer to... Figure 3 The higher the ambient temperature, the greater the opening degree of the regulating water valve DZ.

[0029] S202 controls the refrigerant in the carburetor to flow from the refrigerant outlet to the cooling core after heat exchange with the liquefied gas, and cools the vehicle through the cooling core.

[0030] Once the valve opening is adjusted, the refrigerant in the carburetor can be controlled to flow from the refrigerant outlet to the cooling core after heat exchange with the liquefied gas. Specifically, a valve and a pump can be installed on the pipeline between the refrigerant outlet and the cooling core. The valve controls the opening and closing of the pipeline between the refrigerant and the cooling core, and the pump controls the flow rate of the refrigerant to the cooling core. The vehicle is then cooled directly through the cooling core.

[0031] The vehicle cooling method provided in this embodiment can be specifically applied to a vehicle cooling software system, which can run on a terminal device. The terminal device can be an in-vehicle device.

[0032] In summary, this embodiment connects the refrigerant outlet of the carburetor to the refrigeration core. Upon receiving a vehicle cooling command, it controls the refrigerant in the carburetor to flow from the refrigerant outlet to the refrigeration core after exchanging heat with the liquefied gas, so that the vehicle can be cooled through the refrigeration core. That is, the cold energy in the refrigerant is directly used to cool the vehicle, omitting the intermediate cold storage step, thereby improving the utilization efficiency of the cold energy stored in the liquefied gas and reducing air conditioning gas consumption.

[0033] In addition, since the vehicle is cooled directly using the cold energy in the refrigerant, this embodiment also adjusts the valve opening of the refrigerant inlet according to the ambient temperature to control the amount of cold in the refrigerant, thereby adjusting the cooling speed and cooling temperature to better meet the user's needs.

[0034] In some embodiments of the present invention, such as Figure 4 As shown, the steps for controlling the valve opening at the refrigerant inlet based on the ambient temperature include: S401 determines the target temperature range of the ambient temperature based on multiple preset temperature ranges.

[0035] Multiple temperature ranges can be set based on historical ambient temperatures, such as below 15℃, 15℃~25℃, 26℃~31℃, and above 31℃.

[0036] S402, based on the preset mapping relationship between the temperature range and the valve opening of the refrigerant inlet, determine the target valve opening corresponding to the target temperature range, and control the valve opening of the refrigerant inlet to be the target valve opening.

[0037] The higher the temperature within a temperature range, the larger the corresponding valve opening. The specific valve opening value can be determined experimentally based on factors such as the range of the temperature range, the vehicle model, and the type of refrigerant.

[0038] In this embodiment, by determining the target temperature range in which the ambient temperature is located and adjusting the valve at the inlet of the secondary refrigerant according to the target valve opening corresponding to the target temperature range, it is possible to keep the valve opening constant when the ambient temperature is in the same temperature range, thereby avoiding frequent adjustment of the valve opening.

[0039] In some embodiments of the present invention, a first mapping relationship between the temperature range and the temperature of the refrigeration core, a second mapping relationship between the temperature of the refrigeration core and the valve opening, and a third mapping relationship between the valve opening and the outlet temperature of the secondary refrigerant of the vaporizer can be established. As Figure 5 shown, a vehicle refrigeration schematic diagram provided by the present invention is shown. T is the temperature of the refrigeration core, and 4 target values of TK1 - TK4 are preset. For example, they can be successively taken as 15°C, 10°C, 5°C, and 0°C. TE is the ambient temperature, T1 is the outlet temperature of the secondary refrigerant of the vaporizer, and 4 target values of TQ1 - TQ4 are also preset. TQ1 - TQ4 correspond one-to-one with TK1 - TK4, and are all lower than the corresponding TK1 - TK4 temperatures (because there is a certain amount of cold loss when the secondary refrigerant flows from the outlet of the secondary refrigerant to the refrigeration core, so to make the temperature of the refrigeration core reach the target value, the outlet temperature of the secondary refrigerant needs to be lower). t1~t4 are the boundary values of each temperature range, and specific examples of the temperature range can be referred to above.

[0040] When TE < t1, according to the first mapping relationship, the temperature of the refrigeration core corresponding to this temperature range is determined to be TK1, that is, the temperature of the refrigeration core needs to be adjusted to TK1. Then, according to the second mapping relationship, the target valve opening corresponding to TK1 is determined, and according to the third mapping relationship, the outlet temperature TQ1 of the secondary refrigerant corresponding to the target valve opening is determined, that is, the outlet temperature of the secondary refrigerant needs to be adjusted to TQ1. When t1 When t1 ≤ TE < t2, according to the first mapping relationship, the temperature of the refrigeration core corresponding to this temperature range is determined to be TK2, and then according to the second mapping relationship, the target valve opening corresponding to TK2 is determined. According to the third mapping relationship, the outlet temperature TQ2 of the secondary refrigerant corresponding to the target valve opening is determined. The judgment process of the valve opening corresponding to other temperature ranges is类推, and will not be elaborated here one by one.

[0041] In this embodiment, when the ambient temperature is less than t0, for example, less than 7°C, a message indicating that the target temperature of the refrigeration core is invalid can be sent to indicate that the refrigeration core is not used for refrigeration.

[0042] In this embodiment, splitting the mapping relationship between the temperature range and the valve opening at the inlet of the secondary refrigerant into the above-mentioned multiple mapping relationships can clearly calibrate the target and facilitate calibration testing.

[0043] In some embodiments of the present invention, the carburetor includes a gas outlet connected to a gas buffer tank, and the vehicle cooling method further includes: When the gas temperature measurement in the gas buffer tank is invalid, or is less than or equal to the preset gas temperature threshold, the valve at the refrigerant inlet will be fully opened first. The steps for controlling the valve opening at the refrigerant inlet based on the ambient temperature include: When the gas temperature measurement in the gas buffer tank is valid and exceeds the preset gas temperature threshold, the valve opening of the refrigerant inlet is controlled according to the ambient temperature.

[0044] The refrigerant in the carburetor needs to raise the liquefied gas to a certain temperature to supply the engine, and also needs to provide cooling according to the temperature required by the air conditioning system. Prioritizing the engine's needs is crucial because excessively low gas temperatures delivered to the engine could pose safety hazards. Therefore, when the gas temperature measurement in the gas buffer tank is invalid, or is less than or equal to a preset gas temperature threshold, the refrigerant inlet valve is fully opened to ensure the carburetor can vaporize the gas required by the engine to the necessary temperature and pressure, without affecting normal vehicle operation. For example, continuing to refer to... Figure 5 When the gas temperature , At -30℃, the valve at the refrigerant inlet can be fully opened with priority.

[0045] When the gas temperature measurement in the gas buffer tank is valid and exceeds the preset gas temperature threshold, that is, when the refrigerant in the carburetor can raise the liquefied gas to a certain temperature to supply the engine and meet the engine's needs, the opening of the refrigerant inlet valve is then controlled according to the ambient temperature.

[0046] In some embodiments of the present invention, the vehicle further includes an engine cooling system and an engine; the vehicle cooling method further includes: When the gas temperature in the gas buffer tank is lower than the preset gas temperature threshold, the coolant that has exchanged heat with the engine in the engine cooling system is introduced into the coolant through the coolant inlet.

[0047] The coolant in the engine cooling system, which exchanges heat with the engine, is typically at a higher temperature. When the gas temperature in the gas buffer tank is lower than a preset gas temperature threshold, the coolant from the engine cooling system that has exchanged heat with the engine can be mixed into the refrigerant through the refrigerant inlet. This accelerates the heat exchange between the refrigerant and the liquefied gas, allowing the temperature of the liquefied gas to rise to [a higher temperature]. The above meets the engine requirements.

[0048] In some embodiments of the present invention, the vehicle further includes a cooling supplement module, which is used when the refrigerant flows from the refrigerant outlet to the cooling core; the vehicle cooling method further includes: Determine the target refrigerant outlet temperature based on the ambient temperature; When the real-time temperature of the refrigerant outlet is higher than the target refrigerant outlet temperature, the refrigerant is cooled by the supplementary cooling module.

[0049] In this embodiment, when the real-time temperature of the refrigerant outlet is greater than the target refrigerant outlet temperature, that is, when the refrigerant temperature is insufficient for the cooling core to reach the target value, the refrigerant can be supplemented with cooling by the supplementary cooling module to ensure the accuracy of temperature control. However, if the real-time temperature of the refrigerant outlet is less than or equal to the target refrigerant outlet temperature, the supplementary cooling module does not need to supplement the refrigerant.

[0050] Continue to refer to Figure 3 When the vehicle is powered on and cooling is required, the water valve DZ opens, and the coolant in the carburetor is pumped from the air conditioning inlet to the refrigeration module. If the real-time temperature at the air conditioning inlet is higher than the target refrigerant outlet temperature, the supplementary cooling air conditioner cools the refrigeration module further, allowing the coolant to cool down as it flows through the module. The coolant is then circulated back to the refrigeration core. If the real-time temperature at the air conditioning inlet is lower than or equal to the target refrigerant outlet temperature, the supplementary cooling air conditioner does not activate, and the refrigeration module does not further cool the coolant. The supplementary cooling air conditioner includes components such as a compressor, temperature detection module, pressure sensor, and expansion valve. The cooling medium in the supplementary cooling air conditioner circulates through these components and flows through the supplementary cooling module, where it exchanges heat with the coolant flowing from the carburetor to cool it. When the vehicle is powered on and cooling is not required: the water valve DZ remains open, and the carburetor operates on the same principle as conventional LNG vaporization, supplying power to the engine after normal vaporization.

[0051] This embodiment only modifies the vaporizer. The vaporizer's water temperature is controlled by adjusting the opening of the flow valve DZ at the vaporizer's inlet. During operation, based on LNG consumption requirements, the LNG liquid pipeline is immersed in the vaporizer's cooling water. Due to the temperature difference, heat exchange occurs, lowering the cooling water temperature within the vaporizer. The air conditioning system uses a water pump to direct the cooling water from the vaporizer to the refrigeration core. If the cooling temperature is insufficient, the compressor can further cool the water. The cooled water is then released to the driver's cab through the refrigeration core. The reheated cooling water returns to the vaporizer to continue absorbing LNG cooling energy and is then supplied to the air conditioning system's water pump for circulation. Real-world testing shows that compared to traditional air conditioning systems, the LNG-powered air conditioning system based on this solution is expected to reduce air consumption by approximately 2% to 3% during summer use.

[0052] In some embodiments of the present invention, the vehicle refrigeration method further includes: controlling the refrigerant in the refrigeration core to be re-delivered back to the carburetor.

[0053] In some embodiments of the present invention, the vehicle cooling method further includes: after the vehicle is powered on, but before receiving a vehicle cooling command, controlling the refrigerant inlet valve to be fully open. For example... Figure 5 As shown, the valve can be fully opened for at least t0 minutes to stabilize the air conditioning system before proceeding with the subsequent refrigeration control process.

[0054] In some embodiments of the present invention, the liquefied gas inlet and outlet of the vaporizer are respectively connected to a liquefied gas cylinder and a gas buffer tank, the latter including a booster pump. When the pressure in the liquefied gas cylinder is insufficient and pressurization is required, the booster pump operates, drawing gaseous gas from the gas buffer tank and returning it to the liquefied gas cylinder through the return port, thereby continuously increasing the pressure in the liquefied gas cylinder. When the pressure in the liquefied gas cylinder reaches a certain set value, the booster pump stops operating, and the pressurization of the liquefied gas cylinder stops.

[0055] For details, please refer to... Figure 5 When the vehicle is powered on, and the booster pump temperature is between -t1 and t2, the vehicle voltage is between U1 and U2, the vehicle current is less than i1, and the LPG cylinder pressure is less than Pa, the booster pump will work until the LPG cylinder pressure is greater than or equal to Pa and then stop working. If the booster pump works for more than or equal to t3 minutes, but the LPG cylinder pressure does not reach Pa, the booster pump will also stop working. However, after waiting for t4 minutes, the above process will be repeated until the booster pump makes the LPG cylinder pressure greater than or equal to Pa within the working time of t3 minutes.

[0056] Reference Figure 6 The diagram illustrates a structural schematic of an embodiment of the vehicle refrigeration system provided by the present invention. The system is applied to a vehicle, which includes a carburetor for vaporizing liquefied natural gas. The carburetor includes a refrigerant inlet and a refrigerant outlet, with the refrigerant outlet connected to a refrigeration core. The system 600 includes: The valve opening control module 601 is used to control the valve opening of the refrigerant inlet according to the ambient temperature in response to the vehicle's cooling command. The refrigeration module 602 is used to control the refrigerant in the carburetor to flow from the refrigerant outlet to the refrigeration core after heat exchange with the liquefied gas, so as to cool the vehicle through the refrigeration core.

[0057] In this embodiment, the refrigerant outlet of the carburetor is connected to the cooling core. After receiving the vehicle's cooling command, the refrigerant in the carburetor is controlled to flow from the refrigerant outlet to the cooling core after exchanging heat with the liquefied gas. The vehicle is then cooled by the cooling core. In other words, only two-phase media (liquefied gas and refrigerant in the carburetor) are used to cool the vehicle, omitting the intermediate cold storage step. This improves the utilization efficiency of the cold energy stored in the liquefied gas and reduces air conditioning gas consumption.

[0058] In addition, since the vehicle is cooled directly using the cold energy in the refrigerant, this embodiment also adjusts the valve opening of the refrigerant inlet according to the ambient temperature to control the amount of cold in the refrigerant, thereby adjusting the cooling speed and cooling temperature to better meet the user's needs.

[0059] It should be noted that the implementation principles or processes of the above modules can be referred to the aforementioned vehicle refrigeration method embodiments, and will not be elaborated here.

[0060] Reference Figure 7 The illustration shows a vehicle 700 provided by the present invention. The vehicle 700 includes a processor 701, a memory 702, and a display 703. Figure 7 Only some components of vehicle 700 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0061] In some embodiments, processor 701 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 702 or process data, such as the vehicle cooling method of the present invention.

[0062] In some embodiments, processor 701 may be a single server or a group of servers. The server group may be centralized or distributed. In some embodiments, processor 701 may be local or remote. In some embodiments, processor 701 may be implemented on a cloud platform. In one embodiment, the cloud platform may include a private cloud, public cloud, hybrid cloud, community cloud, distributed cloud, internal cloud, multi-cloud, etc., or any combination thereof.

[0063] In some embodiments, memory 702 may be an internal storage unit of vehicle 700, such as a hard disk or memory of vehicle 700. In other embodiments, memory 702 may also be an external storage device of vehicle 700, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on vehicle 700.

[0064] Furthermore, the memory 702 may include both internal storage units of the vehicle 700 and external storage devices. The memory 702 is used to store application software and various types of data installed on the vehicle 700.

[0065] In some embodiments, display 703 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. Display 703 is used to display information about vehicle 700 and to display a visual user interface. Components 701-703 of vehicle 700 communicate with each other via a system bus.

[0066] In one embodiment, the vehicle includes a vaporizer for vaporizing liquefied natural gas. The vaporizer includes a refrigerant inlet and a refrigerant outlet, the refrigerant outlet being connected to a cooling core. When the processor 701 executes the vehicle cooling program in the memory 702, the vehicle cooling program can perform the following steps: In response to the vehicle's cooling command, the valve opening at the refrigerant inlet is controlled according to the ambient temperature; The refrigerant in the carburetor exchanges heat with the liquefied gas and then flows from the refrigerant outlet to the cooling core, which cools the vehicle.

[0067] It should be understood that when the processor 701 executes the vehicle cooling program in the memory 702, in addition to the functions mentioned above, it can also perform other functions, as can be found in the description of the corresponding method embodiments above.

[0068] In one embodiment, the present invention also provides a computer-readable storage medium storing a computer program that, when executed by the processor, implements the steps of any of the vehicle cooling methods described above.

[0069] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A vehicle refrigeration method, characterized in that, Applied to a vehicle, the vehicle including a vaporizer for vaporizing liquefied natural gas, the vaporizer including a refrigerant inlet and a refrigerant outlet, the refrigerant outlet being connected to a refrigeration core; the method includes: In response to the vehicle's cooling command, the valve opening at the refrigerant inlet is controlled according to the ambient temperature; The refrigerant in the vaporizer is controlled to flow from the refrigerant outlet to the cooling core after heat exchange with the liquefied gas, and the cooling core cools the vehicle.

2. The vehicle refrigeration method according to claim 1, characterized in that, The method of controlling the valve opening at the refrigerant inlet based on the ambient temperature includes: The target temperature range of the ambient temperature is determined based on multiple preset temperature ranges. Based on the preset mapping relationship between the temperature range and the valve opening of the refrigerant inlet, the target valve opening corresponding to the target temperature range is determined, and the valve opening of the refrigerant inlet is controlled to be the target valve opening.

3. The vehicle refrigeration method according to claim 1, characterized in that, The vaporizer includes a gas outlet, which is connected to a gas buffer tank; the method further includes: When the gas temperature measurement in the gas buffer tank is invalid, or is less than or equal to the preset gas temperature threshold, the valve at the refrigerant inlet is opened fully. The method of controlling the valve opening at the refrigerant inlet based on the ambient temperature includes: When the gas temperature measurement in the gas buffer tank is valid and exceeds the preset gas temperature threshold, the valve opening of the refrigerant inlet is controlled according to the ambient temperature.

4. The vehicle refrigeration method according to claim 3, characterized in that, The vehicle also includes an engine cooling system and an engine; the method further includes: When the gas temperature in the gas buffer tank is lower than the preset gas temperature threshold, the coolant that has exchanged heat with the engine in the engine cooling system is introduced into the coolant from the refrigerant inlet.

5. The vehicle refrigeration method according to any one of claims 1 to 4, characterized in that, The vehicle further includes a cooling replenishment module, which is used when the refrigerant flows from the refrigerant outlet to the refrigeration core; the method further includes: Determine the target refrigerant outlet temperature based on the ambient temperature. When the real-time temperature of the refrigerant outlet is greater than the target refrigerant outlet temperature, the refrigerant is cooled by the supplementary cooling module.

6. The vehicle refrigeration method according to claim 1, characterized in that, The method further includes: The refrigerant in the cooling core is controlled to be returned to the vaporizer.

7. The vehicle refrigeration method according to claim 1, characterized in that, The method further includes: After the vehicle is powered on, but before receiving the vehicle's cooling command, the valve at the refrigerant inlet is fully opened.

8. A vehicle refrigeration system, characterized in that, Applied to a vehicle, the vehicle includes a vaporizer for vaporizing liquefied natural gas, the vaporizer including a refrigerant inlet and a refrigerant outlet, the refrigerant outlet being connected to a refrigeration core; the system includes: The valve opening control module is used to control the valve opening of the refrigerant inlet according to the ambient temperature in response to the vehicle's cooling command. The refrigeration module is used to control the refrigerant in the carburetor to flow from the refrigerant outlet to the refrigeration core after exchanging heat with the liquefied gas, so as to refrigerate the vehicle through the refrigeration core.

9. A vehicle, characterized in that, Including memory and processor, among which, The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the vehicle cooling method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, Used to store computer-readable programs or instructions that, when executed by a processor, can implement the steps of the vehicle cooling method according to any one of claims 1 to 7.

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