Vortex tube type selection method and equipment and emergency cooling system

Abstract

The invention discloses a vortex tube type selection method and device and an emergency cooling system, and relates to the technical field of battery thermal management, and the vortex tube type selection method comprises the steps that the maximum inlet pressure of a vortex tube in the cooling system is obtained; based on the maximum inlet pressure, the inlet flow range of the vortex tube is obtained; obtaining a first range of the inlet diameter of the vortex tube based on the inlet flow range; based on the space information of the cooling system, a second range of the inlet diameter of the vortex tube is obtained; an inlet diameter of the vortex tube is selected based on the first range and the second range. The cooling requirement is measured through the maximum inlet pressure of the vortex tube of the cooling system, and therefore the inlet flow range of the vortex tube is determined and converted into the first range of the inlet diameter. And determining a second range of the diameter during installation by combining system space information. The two ranges are integrated, the inlet diameter of the vortex tube is selected, space utilization is optimized while the cooling requirement is met, and installation is convenient and fast.

Description

Technical Field

[0001] The present application relates to the technical field of battery thermal management, and particularly to a method and device for selecting a vortex tube and an emergency cooling system. Background Art

[0002] The safety problems of new energy vehicles are becoming increasingly prominent. Therefore, it is very necessary to quickly and continuously cool the batteries in the thermal runaway state. Currently, there is no active safety technology for power batteries. Limited by the space and lightweight requirements on passenger vehicles, it is difficult for the cooling medium to suppress the thermal runaway of the batteries. Therefore, a new technical solution is needed that can not only quickly cool the batteries but also continuously cool the batteries. This is to use a vortex tube to couple with the cooling medium to perform emergency cooling on the batteries.

[0003] Among them, the specifications of the vortex tube need to comprehensively consider multiple factors to ensure that it can meet the emergency cooling requirements of the battery pack of new energy vehicles. Therefore, how to select the vortex tube to accurately meet the emergency cooling requirements of the battery pack of new energy vehicles has become a technical problem. Summary of the Invention

[0004] The main purpose of the present application is to provide a method and device for selecting a vortex tube and an emergency cooling system, aiming to solve the technical problem that the traditional method for selecting a vortex tube cannot accurately meet the emergency cooling requirements of the battery pack of new energy vehicles.

[0005] To achieve the above purpose, the present application proposes a method for selecting a vortex tube, and the method includes: obtaining the maximum inlet pressure of the vortex tube in the cooling system; obtaining the inlet flow range of the vortex tube based on the maximum inlet pressure; obtaining the first range of the inlet diameter of the vortex tube based on the inlet flow range; obtaining the second range of the inlet diameter of the vortex tube based on the space information of the cooling system; and selecting the inlet diameter of the vortex tube based on the first range and the second range.

[0006] In an embodiment, the step of obtaining the maximum inlet pressure of the vortex tube in the cooling system includes: obtaining the cylinder parameters in the cooling system, where the cylinder parameters include the cylinder capacity; obtaining the maximum internal pressure of the cylinder based on the cylinder parameters; and selecting the maximum inlet pressure of the vortex tube based on the maximum internal pressure of the cylinder.

[0007] In one embodiment, the step of obtaining the inlet flow rate range of the vortex tube based on the maximum inlet pressure includes: obtaining the control parameters of the cooling system, where the control parameters include the duration of a single cooling cycle and the duty cycle; based on the gas cylinder parameters, the control parameters, and the maximum inlet pressure, selecting the maximum value of the inlet flow rate range of the vortex tube; obtaining the air pump parameters in the cooling system, where the air pump parameters include the air pump power and the air injection speed; and based on the air pump parameters and the control parameters, selecting the minimum value of the inlet flow rate range of the vortex tube.

[0008] In one embodiment, the step of obtaining the second range of the inlet diameter of the vortex tube based on the spatial information of the cooling system includes: obtaining the spatial information of the cooling system, where the spatial information includes the installation position of the vortex tube; obtaining the specification information of the vortex tube fittings; and based on the spatial information and the specification information, obtaining the second range of the inlet diameter of the vortex tube.

[0009] In one embodiment, after the step of obtaining the inlet diameter of the vortex tube based on the inlet flow rate range, the following steps are further included: building a vortex tube flow model; based on the vortex tube flow model and the inlet diameter of the vortex tube, obtaining the internal pressure of the gas cylinder; and based on the internal pressure of the gas cylinder, obtaining the operating time of the air pump to control the operation of the air pump.

[0010] In one embodiment, the step of building the vortex tube flow model includes: obtaining the corresponding vortex tube flow rates through multiple experiments based on different inlet diameters, inlet pressures, and outlet pressures of the vortex tube; calibrating to obtain the vortex tube flow coefficient based on each of the vortex tube flow rates; and building the vortex tube flow model based on the inlet diameter, the inlet pressure, the outlet pressure, and the vortex tube flow coefficient.

[0011] In addition, to achieve the above object, the present application also proposes an emergency cooling system, which includes: a gas supply module, a vortex tube cooling module, and a control module; the selection and application of the vortex tube cooling module adopt the vortex tube selection method as described above; the control module is respectively connected to the gas supply module and the vortex tube cooling module; the gas supply module is also connected to the vortex tube cooling module; the control module is used to obtain the working information of the power battery and output a supply instruction to the gas supply module and a cooling instruction to the vortex tube cooling module based on the working information of the power battery; the gas supply module is used to provide gas to the vortex tube cooling module after receiving the supply instruction; and the vortex tube cooling module is used to convert the gas into cold air and output it to cool the power battery after receiving the cooling instruction.

[0012] In addition, to achieve the above object, the present application further provides a vortex tube selection device, which includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the vortex tube selection method as described above.

[0013] In addition, to achieve the above object, the present application further provides a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium, and when the computer program is executed by a processor, it implements the steps of the vortex tube selection method as described above.

[0014] In addition, to achieve the above object, the present application further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, it implements the steps of the vortex tube selection method as described above.

[0015] One or more technical solutions proposed by the present application have at least the following technical effects:

[0016] The cooling demand is measured by the maximum inlet pressure of the vortex tube in the cooling system, and based on this, the inlet flow range of the vortex tube is determined, that is, the cooling demand is visualized, the flow range when the gas flows through during the operation of the vortex tube is characterized, and then it is converted into the first range of the inlet diameter. Combining with the system space information, the second range of the diameter during installation is determined. By synthesizing the two ranges, the inlet diameter of the vortex tube is selected, which not only meets the cooling demand but also optimizes the space utilization and is convenient for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a block diagram of the module structure of the emergency cooling system in the embodiment of the present application;

[0020] Figure 2 It is a schematic flowchart provided by Embodiment 1 of the vortex tube selection method of the present application;

[0021] Figure 3 It is a schematic flowchart provided by Embodiment 2 of the vortex tube selection method of the present application;

[0022] Figure 4This is a schematic diagram of the device structure of the hardware operating environment involved in the eddy current tube selection method in the embodiments of the present application.

[0023] The implementation, functional features, and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific Embodiments

[0024] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0025] To better understand the technical solutions of the present application, the following will be described in detail in conjunction with the accompanying drawings of the specification and specific embodiments.

[0026] With the rapid development of new energy vehicles, as the core component of new energy vehicles, the safety of power batteries is the focus of concern for consumers. Among them, the common power battery safety problem of thermal runaway needs to be solved urgently. New energy vehicles require effective thermal runaway suppression, protection solutions, and related safety designs to reduce the thermal runaway risk of commercially available products and ensure the life and property safety of vehicle occupants.

[0027] Currently, the protection against battery thermal runaway mainly focuses on two aspects: cooling and blocking. The battery is cooled by a water-cooling plate to prevent its temperature from being too high, and a heat-insulating plate with high thermal resistance is added to block the heat diffusion speed, giving vehicle occupants more time to escape. In addition, many studies also focus on the fire extinguishing methods after thermal runaway, and often use fire protection measures to carry out explosion-proof fire extinguishing treatment on the battery, such as liquid nitrogen, heptafluoropropane, and fine water mist spraying. Since it is necessary to extinguish the fire after the power battery undergoes thermal runaway and a large amount of cooling medium is required for suppression, the most economical and effective method is to suppress its chain reaction before thermal runaway occurs. That is, emergency cooling measures are taken for the overheated power battery to suppress and delay the occurrence of its thermal runaway.

[0028] Therefore, the present application proposes an emergency cooling system, referring to Figure 1 , Figure 1 This is a block diagram of the module structure of the emergency cooling system in the embodiments of the present application.

[0029] In this embodiment, the described emergency cooling system is applied to the emergency cooling scenario of power batteries, and the emergency cooling system includes: a gas supply module 10, an eddy current tube cooling module 20, and a control module 30.

[0030] Among them, the control module 30 is respectively connected to the gas supply module 10 and the eddy current tube cooling module 20; the gas supply module 10 is also connected to the eddy current tube cooling module 20.

[0031] It should be noted that the control module 30 is used to obtain the working information of the power battery and output a supply instruction to the gas supply module 10 and a cooling instruction to the vortex tube cooling module 20 based on the working information of the power battery. The gas supply module 10 is used to supply gas to the vortex tube cooling module 20 after receiving the supply instruction. The vortex tube cooling module 20 is used to convert the gas into cold air and output it to cool the power battery after receiving the cooling instruction.

[0032] In a feasible implementation manner, the gas supply module 10 includes an air compressor and a high-pressure gas cylinder. The vortex tube cooling module 20 includes a vortex tube, a cooling pipeline arranged in the battery pack, and air holes exist at corresponding positions above each battery cell on the cooling pipeline, which are sealed with a hot-melt material. The control module 30 includes a battery cell voltage and temperature sensor, an in-vehicle processor, a battery management system, a solenoid valve, a pressure regulating valve, a wireless signal transmitter, and an in-vehicle display.

[0033] It should be noted that the high-pressure gas cylinder is used to provide high-pressure air and can be installed inside the rear bumper of the vehicle or other positions on the chassis with anti-collision functions. The air compressor is used to dry and compress the air and compress it into the high-pressure gas cylinder through a gas pipeline. The solenoid valve is used to control the on-off of the compressed gas airway of the emergency cooling system, is connected to the high-pressure gas cylinder, and can be installed beside the high-pressure gas cylinder. The water-cooled plate is used for the battery thermal management system, and the cooling effect is changed by controlling the flow rate of the cooling water. The heat dissipation surface is in contact with the bottom of the battery cell.

[0034] It should be noted that the vortex tube is used to convert compressed air into cold air and output it. It is connected to the solenoid valve through a gas pipeline and is installed outside the battery pack. When the solenoid valve is opened, the compressed air in the high-pressure gas cylinder is introduced into the vortex tube. The cold end of the vortex tube outputs cold air, and the temperature drop of the cold air can reach 68°C. The hot-end gas is discharged towards the exhaust pipe. The cooling pipeline is used to introduce a cooling medium and is divided into main and secondary pipelines. The main pipeline is connected to the vortex tube through a gas pipeline. Inside the battery pack, the main pipeline is divided into secondary pipelines, and the number of secondary pipelines matches the number of battery modules. The secondary pipelines are respectively arranged above the battery modules, and openings are provided above each battery cell on the pipeline, which are sealed with a hot-melt material. The hot-melt material is used to seal the cooling pipeline under normal conditions and can be selected as polystyrene material, whose physical properties will change under high-temperature conditions, and the pressure resistance and tensile strength decrease.

[0035] It should be noted that in this embodiment, the start-stop control is carried out by using the sensors and the battery management system (BMS) within the battery pack itself. Each battery cell is evenly distributed with sensors, and no additional sensors are required. The voltage and temperature sensors of the battery cells are used to monitor the state of the battery cells and provide real-time feedback of the battery cell temperature data. The battery management system is used to receive the sensor signals, send signals to the vehicle processor, and control the startup of the emergency cooling system. The signal transmission methods of this solution include wired and wireless communication. The battery cell sensors are connected to the battery cell sensors through weak current lines or wireless signal transmitters. The vehicle-mounted processor is used to receive the signals sent by the BMS and send a series of instructions to the vehicle end after processing. The vehicle-mounted display is used to display the state of the battery cells and remind the driver and passengers how to respond to sudden overheating situations by receiving the instructions of the vehicle-mounted processor and making corresponding indications. The wireless signal transmitter is used to remotely prompt the vehicle state to the driver not in the vehicle and provide information on relevant processing solutions, and output signals after receiving the instructions of the vehicle-mounted processor.

[0036] It can be seen from this that the vortex tube cooling module is a crucial part of the entire system. Its specifications need to comprehensively consider multiple factors to ensure that it can meet the emergency cooling requirements of new energy vehicle battery packs. Therefore, how to select the vortex tube to accurately meet the emergency cooling requirements of new energy vehicle battery packs has become a technical problem.

[0037] Based on this, the embodiment of this application provides a method for selecting a vortex tube, providing a feasible implementation method for the selection of the vortex tube cooling module in the above-mentioned emergency cooling system. Refer to Figure 2 , Figure 2 FIG. is a schematic flow chart provided for Embodiment 1 of the vortex tube selection method of this application.

[0038] In this embodiment, the vortex tube selection method includes steps S10 to S50:

[0039] Step S10, obtaining the maximum inlet pressure of the vortex tube in the cooling system.

[0040] It should be noted that the vortex tube generates a rotating air flow and uses centrifugal force to separate the air flow into hot and cold parts, thereby achieving the effect of refrigeration or heating. The maximum inlet pressure of the vortex tube is an important parameter, which directly affects the working efficiency and performance of the vortex tube and is an upper limit value for the safe and stable operation of the vortex tube. However, the specific value of this maximum inlet pressure is not fixed but is affected by various factors.

[0041] Specifically, the inlet pressure of a vortex tube must be at least a certain value to ensure proper operation. The maximum inlet pressure of a vortex tube does not necessarily mean that the tube can withstand higher pressures indefinitely. When the inlet pressure exceeds the vortex tube's tolerance range, it may damage the tube or degrade its performance. Therefore, when selecting a vortex tube, it is necessary to reasonably determine the maximum inlet pressure based on the actual application requirements and operating environment.

[0042] In a feasible embodiment, step S10 may include: obtaining gas cylinder parameters in the cooling system, wherein the gas cylinder parameters include gas cylinder capacity; obtaining the maximum pressure inside the gas cylinder based on the gas cylinder parameters; and selecting the maximum inlet pressure of the vortex tube based on the maximum pressure inside the gas cylinder.

[0043] It should be noted that the gas cylinder described in the above embodiment is used in the cooling system to provide high-pressure air to the vortex tube. Its parameters generally include the cylinder capacity, which is an important indicator of the gas storage capacity and is usually measured in liters or cubic meters. This parameter directly determines the total amount of gas that the cylinder can provide.

[0044] It's understood that the maximum internal pressure of a gas cylinder is a parameter that determines its design and safe use. This pressure is typically determined by the cylinder manufacturer based on the cylinder's material, wall thickness, manufacturing process, and expected operating conditions (such as temperature and medium). To determine the maximum internal pressure of a gas cylinder, consult the cylinder's technical specifications or contact the manufacturer for accurate data. This maximum pressure represents the highest internal pressure the cylinder can safely withstand under normal operating conditions.

[0045] It is understood that once the maximum pressure inside the gas cylinder is determined, the maximum inlet pressure of the vortex tube can be selected based on this pressure value. Typically, the maximum inlet pressure of the vortex tube is set slightly lower than the maximum pressure inside the gas cylinder. The gas volume generated by the pressure difference should be greater than the gas consumption of the vortex tube during a cooling period. This ensures that the internal pressure of the gas cylinder does not exceed the maximum pressure when the gas cylinder is supplying gas to the vortex tube, thereby avoiding safety hazards.

[0046] Step S20: obtaining an inlet flow rate range of the vortex tube based on the maximum inlet pressure.

[0047] It's understandable that the vortex tube's inlet flow rate range is a specific and quantitative expression of cooling requirements. It characterizes the range of flow fluctuations when the gas flows through the vortex tube's inlet during operation. Determining this range requires comprehensive consideration of the specific requirements of the cooling system, the vortex tube's operating characteristics and performance parameters, and the actual adjustment methods used in the application, particularly the maximum inlet pressure the vortex tube can withstand.

[0048] In a feasible implementation, step S20 may include: obtaining control parameters of the cooling system, where the control parameters include the duration of a single cooling cycle and the duty cycle; based on the cylinder parameters, the control parameters, and the maximum inlet pressure, selecting the maximum value of the inlet flow rate range of the vortex tube; obtaining the air pump parameters in the cooling system, where the air pump parameters include the air pump power and the air injection speed; based on the air pump parameters and the control parameters, selecting the minimum value of the inlet flow rate range of the vortex tube.

[0049] Specifically, according to the cylinder capacity V bottle , the maximum pressure P in the cylinder bottle , the maximum inlet pressure P of the vortex tube in , the outlet pressure P of the vortex tube 0ut , the duration t of a single cooling cycle of the cooling system, and the duty cycle D, determine the maximum value Q of the inlet flow rate range of the vortex tube vortex :

[0050] Q vortex = (P bottle · V bottle / P out ) - (P in · V bottle / P out ) / (tD)

[0051] It should be noted that the outlet pressure P of the vortex tube out

[0052] The duration t of a single cooling cycle of the cooling system means that one cooling cycle includes one vortex tube cooling period and one vortex tube idle period; the duty cycle D is the ratio of the single injection cooling time of the vortex tube to the single cooling cycle time.

[0053] Specifically, according to the air injection flow rate Q pump of the air pump, that is, the gas flow rate pumped into the cylinder by the air injection pump, the cycle duration t and the duty cycle D of the cooling system, determine the minimum value of the selected vortex tube inlet flow rate range, where the relationship between the air injection pump flow rate and the gas pressure P in the cylinder is:

[0054] Q pump = (log k n · R · T / P) / t

[0055] Where, N is Avogadro's constant and R is the universal gas constant.

[0056] At this time, the minimum value of the vortex tube inlet flow rate should be equal to the maximum air injection flow rate Q pb that the air injection pump can reach under the maximum pressure of the cylinder, that is:

[0057] Q ph = (log k n · R · T / Pbottle ) / t

[0058] The flow rate range Q of the vortex tube is as follows:

[0059] Q pb < Q < Q vortex

[0060] Step S30: Based on the inlet flow rate range, obtain the first range of the inlet diameter of the vortex tube.

[0061] It should be noted that this embodiment gives the corresponding relationship between the inlet diameter and the inlet flow rate of the vortex tube:

[0062]

[0063] where A and B are parameters set for convenient representation and have no practical significance, M a is the given Mach number at the nozzle outlet, γ is the specific heat ratio, T in is the inlet temperature.

[0064] Based on this relationship, substituting the maximum and minimum values of the inlet flow rate can obtain the corresponding first range. The first range of the inlet diameter can accurately find the inlet diameter corresponding to the inlet flow rate under the corresponding cooling requirements.

[0065] Step S40: Based on the spatial information of the cooling system, obtain the second range of the inlet diameter of the vortex tube.

[0066] It should be noted that the second range of the inlet diameter is a diameter range that has to be compromised to avoid conflicts between devices during installation. Generally speaking, the spatial information of the cooling system that needs to be considered includes but is not limited to the specific location where the vortex tube is planned to be installed, the available space dimensions (length, width, height) around this location, and possible obstacles or limiting conditions.

[0067] Specifically, in a feasible implementation manner, step S40 may include: obtaining the spatial information of the cooling system, where the spatial information includes the installation location of the vortex tube; obtaining the specification information of the vortex tube fittings; based on the spatial information and the specification information, obtaining the second range of the inlet diameter of the vortex tube.

[0068] Step S50: Based on the first range and the second range, select the inlet diameter of the vortex tube.

[0069] It is understandable that the first range reflects the cooling efficiency and effect that the vortex tube can achieve under different inlet diameters. The second range is determined by the specific spatial position where the vortex tube is installed. Different spatial layouts and size limitations will directly affect the selection and installation of the vortex tube. When the first range representing the cooling capacity and the second range determined by the spatial position are obtained, the inlet diameter can be selected based on the overlapping part of the two, so as to accurately meet the cooling requirements while optimizing the space utilization. After clearly selecting the inlet diameter of the vortex tube, its selection is easily solved and can be correspondingly selected.

[0070] This embodiment provides a method for selecting a vortex tube. The cooling demand is measured by the maximum inlet pressure of the vortex tube in the cooling system, and accordingly, the inlet flow range of the vortex tube is determined, that is, the cooling demand is visualized to represent the flow range when the gas flows through during the operation of the vortex tube, and then it is converted into the first range of the inlet diameter. Combining with the system space information, the second range of the diameter during installation is determined. By synthesizing the two ranges, the inlet diameter of the vortex tube is selected, which can meet the cooling requirements while optimizing the space utilization and is convenient for installation.

[0071] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar content as the above-mentioned embodiment 1 can be referred to the above introduction and will not be repeated hereinafter. On this basis, please refer to Figure 3 , after step S50, the method for selecting a vortex tube further includes steps S60 to S80:

[0072] Step S60, build a vortex tube flow model.

[0073] It should be noted that after determining the type of vortex tube required for the cooling system, it is necessary to consider that the air in the gas cylinder is limited. For the entire system, an air pump is required to inflate the gas cylinder to restore the gas volume in the gas cylinder so that the selected vortex tube can work properly.

[0074] Among them, since the air pump needs to work to restore the pressure in the gas cylinder to the target value, and this restoration process may not be linear, it is complex to directly give the relationship between the duty cycle and the working time of the air pump. However, we can consider a simplified model, that is, build a vortex tube flow model to predict the restoration time of the gas cylinder through the model.

[0075] In a feasible implementation manner, step S60 may include: obtaining the corresponding vortex tube flow through multiple experiments based on the inlet diameter, inlet pressure, and outlet pressure of different vortex tubes; calibrating to obtain the vortex tube flow coefficient based on each of the vortex tube flows; and building a vortex tube flow model based on the inlet diameter, the inlet pressure, the outlet pressure, and the vortex tube flow coefficient.

[0076] Specifically, assume that in each cycle, the air pump works at a constant flow rate for tpump Time is such that the pressure inside the gas cylinder changes from an initial value P initial , where the initial value is not lower than P in , and returns to the target value P target , where the target value does not exceed P bottle .

[0077] It can be understood that the vortex tube flow rate Q:

[0078] Q = C f ·g(d, P in , P out )

[0079] where the vortex tube flow coefficient Cf (dimensionless), a coefficient describing the flow characteristics of the vortex tube, needs to be determined through experiments. The g function is a to-be-determined function that needs to be fitted with experimental data.

[0080] The relationship between the air pump flow rate and the pressure inside the gas cylinder is that the pressure inside the cylinder is inversely proportional to the air pump flow rate:

[0081] Q pump = k·P bottle

[0082] This formula is a simplification based on the ideal gas law and isothermal process. The actual situation may be more complex.

[0083] However, the direct relationship between the duty cycle D and t pump is not straightforward because t pump also depends on the initial pressure of the gas cylinder, the target pressure, the flow rate of the air pump, and the capacity of the gas cylinder. The duty cycle D actually indirectly affects t on by controlling the injection time T pump of the vortex tube because T on affects the rate of pressure drop inside the gas cylinder, thus determining P initial and t pump .

[0084] Step S70, based on the vortex tube flow model and the inlet diameter of the vortex tube, obtain the pressure inside the gas cylinder.

[0085] Step S80, based on the pressure inside the gas cylinder, obtain the working time of the air pump to control the operation of the air pump.

[0086] It can be understood that by inputting the above model into the control module, the control module can calculate the pressure inside the gas cylinder and the working time required for the air pump according to the vortex tube flow model corresponding to the inlet diameter at this time, so as to control the operation of the air pump.

[0087] In this embodiment, after selecting the vortex tube, a corresponding vortex tube flow model is built; based on the built model, the internal pressure of the bottle and the working time required for the air pump are further calculated to assist the emergency cooling system to work, providing more refined control data and accurately meeting the cooling requirements.

[0088] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the vortex tube selection method of this application. Based on this technical concept, more forms of simple transformation are within the protection scope of this application.

[0089] This application provides a vortex tube selection device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the vortex tube selection method in the first embodiment above.

[0090] Next, refer to Figure 4 , which shows a schematic structural diagram of a vortex tube selection device suitable for implementing the embodiments of this application. The vortex tube selection device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (such as in-vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 4 The vortex tube selection device shown is only an example and should not impose any limitation on the functions and usage scope of the embodiments of this application.

[0091] As Figure 4As shown, the vortex tube selection device may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which may perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM: Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the vortex tube selection device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems may be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 may allow the vortex tube selection device to communicate with other devices wirelessly or wiredly to exchange data. Although the figure shows a vortex tube selection device having various systems, it should be understood that it is not required to implement or have all the shown systems. More or fewer systems may be implemented or had alternatively.

[0092] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the methods of the embodiments disclosed in the present application are executed.

[0093] The vortex tube selection device provided by the present application adopts the vortex tube selection method in the above-mentioned embodiment, and can solve the technical problem that the traditional vortex tube selection method cannot accurately meet the emergency cooling requirements of new energy vehicle battery packs. Compared with the prior art, the beneficial effects of the vortex tube selection device provided by the present application are the same as those of the vortex tube selection method provided by the above-mentioned embodiment, and other technical features in the vortex tube selection device are the same as the features disclosed in the method of the previous embodiment, and will not be elaborated here.

[0094] It should be understood that each part disclosed in this application can be implemented by hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0095] As described above, the above are only specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application, and all of them should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

[0096] This application provides a computer-readable storage medium with computer-readable program instructions (i.e., computer programs) stored thereon, and the computer-readable program instructions are used to execute the vortex tube selection method in the above embodiments.

[0097] The computer-readable storage medium provided by this application can be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or flash memory, optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this embodiment, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, device, or device. The program code contained on the computer-readable storage medium can be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0098] The above computer-readable storage medium can be included in the vortex tube selection device; it can also exist separately without being assembled into the vortex tube selection device.

[0099] The above computer-readable storage medium carries one or more programs, which, when executed by the vortex tube selection device, cause the vortex tube selection device to: obtain the maximum inlet pressure of the vortex tube in the cooling system; obtain the inlet flow rate range of the vortex tube based on the maximum inlet pressure; obtain the first range of the inlet diameter of the vortex tube based on the inlet flow rate range; obtain the second range of the inlet diameter of the vortex tube based on the spatial information of the cooling system; and select the inlet diameter of the vortex tube based on the first range and the second range.

[0100] Computer program code for performing the operations of the present application may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., by connecting through the Internet using an Internet service provider).

[0101] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, may be implemented by a dedicated hardware-based system for performing the specified functions or operations, or may be implemented by a combination of dedicated hardware and computer instructions.

[0102] The modules described in the embodiments of the present application may be implemented in software or in hardware. Wherein, the name of the module does not constitute a limitation to the unit itself in some cases.

[0103] The readable storage medium provided by this application is a computer-readable storage medium. The computer-readable storage medium stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned vortex tube selection method, which can solve the technical problem that the traditional vortex tube selection method cannot accurately meet the emergency cooling requirements of new energy vehicle battery packs. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by this application are the same as those of the vortex tube selection method provided by the above embodiments, and will not be elaborated here.

[0104] This application also provides a computer program product, including a computer program, and the steps of the above-mentioned vortex tube selection method are implemented when the computer program is executed by a processor.

[0105] The computer program product provided by this application can solve the technical problem that the traditional vortex tube selection method cannot accurately meet the emergency cooling requirements of new energy vehicle battery packs. Compared with the prior art, the beneficial effects of the computer program product provided by this application are the same as those of the vortex tube selection method provided by the above embodiments, and will not be elaborated here.

[0106] The above are only some embodiments of this application, and thus do not limit the patent scope of this application. Any equivalent structural transformation made under the technical concept of this application by using the content of the specification and drawings of this application, or any direct / indirect application in other related technical fields, is included in the patent protection scope of this application.

Claims

1. A method for selecting a vortex tube, characterized in that, The method includes: Obtaining the maximum inlet pressure of the vortex tube in the cooling system; Based on the maximum inlet pressure, obtaining the inlet flow rate range of the vortex tube; Based on the inlet flow rate range, obtaining the first range of the inlet diameter of the vortex tube; Based on the spatial information of the cooling system, obtaining the second range of the inlet diameter of the vortex tube; Based on the first range and the second range, selecting the inlet diameter of the vortex tube.

2. The method according to claim 1, wherein The step of obtaining the maximum inlet pressure of the vortex tube in the cooling system includes: Obtaining the gas cylinder parameters in the cooling system, where the gas cylinder parameters include the gas cylinder capacity; Based on the gas cylinder parameters, obtaining the maximum internal pressure of the gas cylinder; Based on the maximum internal pressure of the gas cylinder, selecting the maximum inlet pressure of the vortex tube.

3. The method according to claim 2, wherein The step of obtaining the inlet flow rate range of the vortex tube based on the maximum inlet pressure includes: Obtaining the control parameters of the cooling system, where the control parameters include the duration of a single cooling cycle and the duty cycle; Based on the gas cylinder parameters, the control parameters, and the maximum inlet pressure, selecting the maximum value of the inlet flow rate range of the vortex tube; Obtaining the air pump parameters in the cooling system, where the air pump parameters include the air pump power and the air injection speed; Based on the air pump parameters and the control parameters, selecting the minimum value of the inlet flow rate range of the vortex tube.

4. The method according to claim 3, characterized in that The step of obtaining the second range of the inlet diameter of the vortex tube based on the spatial information of the cooling system includes: Obtaining the spatial information of the cooling system, where the spatial information includes the installation position of the vortex tube; Obtaining the specification information of the vortex tube fittings; Based on the spatial information and the specification information, obtaining the second range of the inlet diameter of the vortex tube.

5. The method according to claim 1, characterized in that After the step of obtaining the inlet diameter of the vortex tube based on the inlet flow rate range, it further includes: Building a vortex tube flow model; Based on the vortex tube flow model and the inlet diameter of the vortex tube, obtaining the internal pressure of the gas cylinder; Based on the internal pressure of the gas cylinder, obtaining the working time of the air pump to control the operation of the air pump.

6. The method according to claim 5, characterized in that, The step of building the vortex tube flow model includes: Obtaining the corresponding vortex tube flow rate through multiple experiments based on different inlet diameters, inlet pressures, and outlet pressures of the vortex tube; Based on each of the vortex tube flow rates, calibrating and obtaining the vortex tube flow coefficient; Based on the inlet diameter, the inlet pressure, the outlet pressure, and the vortex tube flow coefficient, building a vortex tube flow model.

7. An emergency cooling system, characterized in that, The emergency cooling system includes: a gas supply module, a vortex tube cooling module, and a control module; The selection of the vortex tube cooling module applies the vortex tube selection method as described in any one of claims 1 to 6; The control module is respectively connected to the gas supply module and the vortex tube cooling module; The gas supply module is further connected to the vortex tube cooling module; The control module is used to obtain the working information of the power battery and output a supply instruction to the gas supply module and a cooling instruction to the vortex tube cooling module based on the working information of the power battery; The gas supply module is used to provide gas to the vortex tube cooling module after receiving the supply instruction; The vortex tube cooling module is used to convert the gas into cold air and output it to cool the power battery after receiving the cooling instruction.

8. A vortex tube selection device, characterized in that, The eddy current tube selection device described above includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the eddy current tube selection method according to any one of claims 1 to 6.

9. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium, and when the computer program is executed by a processor, it implements the steps of the eddy current tube selection method according to any one of claims 1 to 6.

10. A computer program product, characterized in that, The computer program product includes a computer program, and when the computer program is executed by a processor, it implements the steps of the eddy current tube selection method according to any one of claims 1 to 6.

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