Operation method and device of vehicle-mounted oxygen production and vehicle-mounted refrigerator integrated system

Abstract

The invention relates to the technical field of vehicles, and discloses an operation method and device for a vehicle-mounted oxygen production and vehicle-mounted refrigerator integrated system, and the operation method comprises the steps that air is input into a molecular sieve module assembly through an oilless air compressor, and oxygen and nitrogen are generated; wherein the oxygen is shunted to the oxygen generation branch so as to supply oxygen to the interior of the vehicle; the nitrogen is shunted to a nitrogen charging branch through the oilless air compressor so as to supply nitrogen to the vehicle-mounted refrigerator; environment data in the vehicle-mounted refrigerator and the refrigerator door state of the vehicle-mounted refrigerator are obtained; determining a fresh-keeping demand index matched with the vehicle-mounted refrigerator under the environment data; and based on the fresh-keeping demand index and the refrigerator door state, a nitrogen charging demand instruction is determined, and the nitrogen charging flow is adjusted according to the nitrogen charging demand instruction, so that cooperative operation of oxygen supply and nitrogen supply is achieved. According to the technical scheme, the nitrogen by-product generated by the vehicle-mounted oxygen generation equipment can be effectively utilized, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to an operating method and apparatus for an integrated system of vehicle-mounted oxygen generator and vehicle-mounted refrigerator. Background Technology

[0002] With the increasing popularity of self-driving travel, the demand for in-vehicle oxygen therapy among certain groups is growing. However, existing oxygen generation systems have problems such as directly emitting nitrogen byproducts and failing to fully utilize their potential value, resulting in resource waste and low energy efficiency, which reduces the overall system performance.

[0003] Therefore, how to effectively utilize the nitrogen byproducts generated by on-board oxygen generators and improve energy efficiency is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides a method and apparatus for operating an integrated system of vehicle-mounted oxygen generator and vehicle-mounted refrigerator, which achieves the technical effect of effectively utilizing nitrogen by-products generated by vehicle-mounted oxygen generator and improving energy utilization efficiency.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include: In a first aspect, embodiments of this application provide an operating method for an integrated vehicle-mounted oxygen generator and vehicle-mounted refrigerator system, the system comprising an oil-free air compressor, a molecular sieve module assembly, and a vehicle-mounted refrigerator; the operating method includes: Air is fed into the molecular sieve module assembly via an oil-free air compressor to produce oxygen and nitrogen. The oxygen is diverted to the oxygen generation branch to supply oxygen to the vehicle interior, and the nitrogen is diverted to the nitrogen filling branch via the oil-free air compressor to supply nitrogen to the vehicle refrigerator. Acquire environmental data inside the vehicle refrigerator and the refrigerator door status; Determine the preservation requirement index that is suitable for the vehicle refrigerator under the environmental data; Based on the preservation demand index and the refrigerator door status, a nitrogen filling demand command is determined, and the nitrogen filling flow rate is adjusted according to the nitrogen filling demand command to achieve coordinated operation of oxygen supply and nitrogen supply.

[0006] This embodiment provides an operational method for an integrated vehicle-mounted oxygen generator and refrigerator system. Air is supplied to the molecular sieve module assembly via an oil-free air compressor. The system effectively separates oxygen and nitrogen, providing the necessary oxygen supply to the vehicle interior and using nitrogen as a byproduct for filling the refrigerator. After acquiring real-time data on the refrigerator's internal environment and door status, the system calculates a preservation demand index adapted to the current environment. Based on this index and the refrigerator door status, it determines a nitrogen filling demand command, thereby adjusting the nitrogen filling flow rate to achieve coordinated operation of oxygen and nitrogen supply. This mechanism not only ensures food freshness but also reduces dependence on external nitrogen supply, significantly improving energy efficiency.

[0007] In one implementation, the environmental data includes current oxygen concentration, current carbon dioxide concentration, current humidity, and current food weight; determining the preservation requirement index adapted to the vehicle refrigerator under the environmental data includes: Based on the preset target oxygen concentration and oxygen concentration threshold, determine the oxygen concentration deviation that matches the current oxygen concentration; Based on a preset carbon dioxide concentration threshold, determine a carbon dioxide concentration deviation that matches the current carbon dioxide concentration; Based on the preset target humidity and humidity threshold, determine the humidity deviation that matches the current humidity; The oxygen concentration deviation, carbon dioxide concentration deviation, humidity deviation, and current food weight are weighted and summed to obtain the freshness preservation demand index of the vehicle refrigerator under the environmental data.

[0008] This embodiment calculates the oxygen concentration deviation, carbon dioxide concentration deviation, and humidity deviation under the current conditions based on preset target oxygen concentration, carbon dioxide concentration, and humidity thresholds, and then weights and sums them together with the current food weight to derive a preservation demand index. This comprehensive assessment enables the system to intelligently adjust the amount of nitrogen injected, effectively utilizing the nitrogen byproducts generated by the onboard oxygen generator, thereby reducing dependence on traditional refrigerants and improving energy efficiency.

[0009] In one implementation, determining the nitrogen filling requirement instruction based on the preservation demand index and the refrigerator door status includes: If the freshness preservation demand index is greater than the set index value and the refrigerator door is closed, the nitrogen filling demand command is determined to start nitrogen filling.

[0010] In this embodiment, when the freshness demand index exceeds a set value and the refrigerator is closed, the system initiates a nitrogen charging command to reduce the oxygen concentration, thereby extending the shelf life of food. During this process, the nitrogen byproducts generated by the onboard oxygen generator are fully utilized, achieving not only efficient resource utilization and cost reduction but also reducing dependence on external nitrogen supply, significantly lowering energy consumption. This approach optimizes overall work efficiency, improves energy utilization efficiency, and demonstrates the shared and collaborative operation of the onboard oxygen generator and the onboard refrigerator in terms of resource management.

[0011] In one embodiment, adjusting the nitrogen flow rate according to the nitrogen filling demand command includes: If the nitrogen charging requirement command is to not start nitrogen charging, then the nitrogen charging flow rate is zero; If the nitrogen filling demand command is to start nitrogen filling, then determine the valve opening degree that matches the freshness preservation demand index to adjust the nitrogen filling flow rate.

[0012] In this embodiment, when the nitrogen charging demand command is set to "not initiate nitrogen charging," the nitrogen charging flow rate is set to zero to avoid wasting nitrogen and energy when not needed. This ensures efficient resource utilization, particularly in fully utilizing the nitrogen byproducts generated by the onboard oxygen generator. Conversely, when the nitrogen charging demand command is set to "initiate nitrogen charging," the system dynamically adjusts the valve opening based on the preservation demand index, thereby precisely controlling the nitrogen charging flow rate. When the preservation demand index is high, the system increases the valve opening to meet the refrigerator's nitrogen requirements, reducing oxygen concentration and extending the shelf life of food. This flexible management approach not only improves food preservation but also effectively enhances energy efficiency.

[0013] In one embodiment, the molecular sieve module assembly includes at least two molecular sieve oxygen generators and at least one oxygen storage tank; wherein, When the first molecular sieve oxygen generator is in adsorption mode, the oil-free air compressor inputs air into the first molecular sieve oxygen generator to produce oxygen to the oxygen storage tank; at the same time, the second molecular sieve oxygen generator is in desorption mode and discharges the generated nitrogen to the oil-free air compressor.

[0014] In one embodiment, the nitrogen outlet of the oil-free air compressor is provided with a flow control device, which is used to control the flow direction of the nitrogen.

[0015] In one embodiment, the vehicle refrigerator has a nitrogen inlet at one bottom end and an outlet at the other bottom end.

[0016] Secondly, embodiments of this application provide an operating device for an integrated vehicle-mounted oxygen generator and vehicle-mounted refrigerator system, the system comprising an oil-free air compressor, a molecular sieve module assembly, and a vehicle-mounted refrigerator; the operating device includes: The gas splitting unit is used to input air into the molecular sieve module assembly through an oil-free air compressor to produce oxygen and nitrogen; wherein, the oxygen is split to the oxygen generation branch to supply oxygen to the vehicle interior; and the nitrogen is split to the nitrogen filling branch through the oil-free air compressor to supply nitrogen to the vehicle refrigerator. The data acquisition unit is used to acquire environmental data inside the vehicle refrigerator and the refrigerator door status of the vehicle refrigerator; A demand determination unit is used to determine a freshness preservation demand index that is suitable for the vehicle refrigerator under the environmental data. The collaborative operation unit is used to determine the nitrogen filling demand command based on the preservation demand index and the refrigerator door status, and adjust the nitrogen filling flow rate according to the nitrogen filling demand command to achieve the collaborative operation of oxygen supply and nitrogen supply.

[0017] Thirdly, embodiments of this application provide a computer device, including: The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes these computer instructions to perform the operation method of the aforementioned integrated vehicle oxygen generator and vehicle refrigerator system.

[0018] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer instructions, which are used to cause a computer to execute the operation method of the above-described vehicle-mounted oxygen generator and vehicle-mounted refrigerator integrated system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A flowchart illustrating the operation method of an integrated vehicle oxygen generator and vehicle refrigerator system provided in this application embodiment; Figure 2 A schematic diagram of an integrated vehicle oxygen generator and vehicle refrigerator system provided in this application embodiment; Figure 3 A schematic diagram illustrating the air intake and exhaust of a vehicle-mounted refrigerator, provided as an embodiment of this application; Figure 4 A flowchart of step S5 provided in an embodiment of this application; Figure 5 A flowchart of step S7 provided in an embodiment of this application; Figure 6 A flowchart for adjusting the nitrogen flow rate according to a nitrogen filling demand command provided in this application embodiment; Figure 7 A block diagram of an operating device for an integrated vehicle oxygen generator and vehicle refrigerator system provided in this application embodiment; Figure 8 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application.

[0021] Explanation of reference numerals in the attached figures 1. Oil-free air compressor, 2. Molecular sieve module assembly, 21. Oxygen storage tank, 221. First molecular sieve oxygen generator, 222. Second molecular sieve oxygen generator, 3. Vehicle refrigerator, 4. Control and diversion device, 31. Air inlet, 32. Air outlet, 5. Air compressor intake and exhaust pipes, 6. Nitrogen charging pipeline, 7. Nasal oxygen supply pipe, 8. Diffuse oxygen supply pipe, 9. Nitrogen exhaust silencer, 10. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] As self-driving travel becomes an increasingly important lifestyle, especially for specific groups such as patients with respiratory diseases, the elderly, and travelers to high-altitude areas, the demand for in-vehicle oxygen therapy or supplemental oxygen is becoming more and more apparent. An adequate supply of oxygen not only protects the health of drivers and passengers but also effectively alleviates driving fatigue and improves concentration, which is particularly important in oxygen-deficient environments such as high altitudes. However, existing in-vehicle oxygen generation systems have some shortcomings in their technological application, such as the direct emission of nitrogen as a byproduct, failing to fully utilize its potential value.

[0024] From a resource utilization perspective, traditional molecular sieve oxygen generation technology typically separates oxygen and nitrogen. However, the energy consumption in this process is mainly concentrated on oxygen extraction, while the neglect of nitrogen as a byproduct leads to energy waste. This "resource leakage loophole" not only reduces the overall system performance but also fails to fully utilize the potential applications of nitrogen in other areas.

[0025] Therefore, how to effectively utilize the nitrogen byproducts generated by on-board oxygen generators and improve energy efficiency is a technical problem that urgently needs to be solved.

[0026] According to an embodiment of this application, an embodiment of the operation method of an integrated vehicle oxygen generator and vehicle refrigerator system is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0027] This embodiment provides a method for operating an integrated vehicle oxygen generator and vehicle refrigerator system. Figure 1 A flowchart illustrating the operation method of an integrated vehicle oxygen generator and vehicle refrigerator system provided in this application embodiment. Figure 2 A schematic diagram of an integrated vehicle-mounted oxygen generator and vehicle-mounted refrigerator system provided in this application embodiment; the system includes an oil-free air compressor 1, a molecular sieve module assembly 2, and a vehicle-mounted refrigerator 3; the process includes the following steps: In step S1, air is input into the molecular sieve module assembly 2 through the oil-free air compressor 1 to generate oxygen and nitrogen. The oxygen is diverted to the oxygen generation branch to supply oxygen to the vehicle interior, and the nitrogen is diverted to the nitrogen filling branch through the oil-free air compressor 1 to supply nitrogen to the vehicle refrigerator 3.

[0028] Specifically, the oil-free air compressor 1 is a four-cylinder oil-free air compressor. It draws in air through the intake filter 5, and while two cylinders compress the air, the other two cylinders simultaneously draw in air. This design ensures a continuous and stable air input. The compressed air is cooled by a cooling pipe and fan, and then delivered to the molecular sieve module assembly 2 through the air compressor intake and exhaust pipes 6 on the oxygen generation branch. The molecular sieve module assembly 2 contains at least two molecular sieve oxygen generators and an oxygen storage tank 21. The molecular sieve oxygen generators employ vacuum pressure swing adsorption (VPSA) technology, which effectively separates nitrogen and oxygen. In one cycle, when the first molecular sieve oxygen generator 221 is in adsorption mode, air is input and oxygen is produced, which is then sent to the oxygen storage tank 21; simultaneously, the second molecular sieve oxygen generator 222 is in desorption mode, discharging the produced nitrogen. The discharged nitrogen can be supplied to the vehicle refrigerator 3 through the nitrogen charging pipe 7 on the nitrogen charging branch. The alternating operation of the two molecular sieve oxygen generators improves the overall efficiency of the system and enables a continuous oxygen supply.

[0029] Oxygen is supplied from the oxygen tank 21 to users inside the vehicle via the nasal inhalation tube 8 and the diffusion tube 9 to ensure the breathing needs of passengers. Nitrogen is guided to the on-board refrigerator 3 for nitrogen filling via the control diversion device 4, and can be discharged through the nitrogen venting muffler 10 when there is no need for nitrogen filling to avoid waste.

[0030] Preferably, please refer to Figure 3 This is a schematic diagram of the air inlet and outlet of a vehicle refrigerator provided in an embodiment of this application. Since nitrogen is less dense than air, the nitrogen inlet 31 is positioned at one end of the bottom of the vehicle refrigerator 3, allowing nitrogen to effectively displace the existing air inside the refrigerator. When nitrogen enters the vehicle refrigerator 3 through the inlet 31, it accumulates at the bottom of the refrigerator 3, gradually displacing the air inside and thus rapidly reducing the oxygen content. Simultaneously, the outlet 32 ​​is positioned at the other end of the bottom of the vehicle refrigerator 3. This design effectively prevents natural loss of nitrogen during the filling process due to gas flow. By placing the outlet 32 ​​at the bottom, a high concentration of nitrogen can be maintained within the vehicle refrigerator 3.

[0031] It should be noted that one-way valves are installed at the air inlet 31 and the air outlet 32 ​​to ensure the one-way flow of gas and prevent nitrogen from flowing back during filling. At the same time, this design also prevents external air from flowing back into the vehicle refrigerator 3 when the internal pressure changes, thereby maintaining a relatively sealed state inside the vehicle refrigerator 3.

[0032] Step S3: Obtain environmental data inside the vehicle refrigerator 3 and the refrigerator door status of the vehicle refrigerator 3.

[0033] Specifically, environmental data, including current oxygen concentration, current carbon dioxide concentration, current humidity, and current food weight, can all be acquired through corresponding sensors. The refrigerator door status is monitored in real time via a door magnetic sensor, allowing the system to adjust nitrogen flow and temperature control strategies based on whether the door is open or closed.

[0034] Step S5: Determine the preservation requirement index for the vehicle refrigerator 3 under environmental data.

[0035] Specifically, by monitoring the current oxygen concentration, carbon dioxide concentration, humidity, and food weight in real time and comparing them with preset target values, the deviations of each are determined. This method not only makes the adjustment of oxygen concentration more precise but also takes into account the impact of carbon dioxide, avoiding the risk of food spoilage caused by excessively high CO2 concentrations. Meanwhile, real-time monitoring and adjustment of humidity is also a crucial step in ensuring food quality. Through standardized deviation calculations, it is possible to quickly identify whether the current storage environment is suitable for the long-term preservation of specific foods.

[0036] In the weighted summation process, the weight coefficients of each parameter are set based on their relative importance to food preservation and have dynamic adjustment capabilities, responding to changes in the actual environment. This flexible management capability enables the system to intelligently optimize the amount of nitrogen injected, thereby effectively utilizing the nitrogen byproducts generated by the oxygen production equipment, reducing reliance on traditional refrigerants, and improving energy efficiency.

[0037] Step S7: Based on the preservation demand index and the refrigerator door status, determine the nitrogen filling demand command, and adjust the nitrogen filling flow rate according to the nitrogen filling demand command to achieve coordinated operation of oxygen supply and nitrogen supply.

[0038] Specifically, when the freshness demand index exceeds the set value and the refrigerator door is closed, a nitrogen filling command is initiated. This is because when environmental conditions are unfavorable and oxygen concentrations are too high, the risk of food spoilage increases. Therefore, the system uses nitrogen filling to reduce oxygen concentration and extend the shelf life of food. The closed refrigerator door helps maintain a relatively stable internal environment, reducing interference from external air and pollutants, thus improving the effectiveness of nitrogen filling. Furthermore, the system continuously monitors the current oxygen concentration, carbon dioxide concentration, humidity, and food weight during nitrogen filling to ensure these parameters remain within reasonable ranges. Once the freshness demand index drops below the set value or the refrigerator is opened, the nitrogen filling operation automatically stops. This mechanism not only ensures food freshness but also improves energy efficiency. By utilizing the nitrogen byproduct generated by the onboard oxygen generator, the system achieves efficient resource utilization, reducing dependence on external nitrogen supply, thereby saving costs and reducing overall energy consumption. This intelligent management model demonstrates the collaborative operation between the onboard oxygen generator and the refrigerator, optimizing resource allocation and enhancing work efficiency.

[0039] This embodiment provides an operation method for an integrated vehicle oxygen generator and vehicle refrigerator system. Air is input to the molecular sieve module assembly 2 via an oil-free air compressor 1. The system effectively separates oxygen and nitrogen, providing the necessary oxygen supply to the vehicle interior and using nitrogen as a byproduct for filling the vehicle refrigerator 3. After acquiring real-time data on the refrigerator's internal environment and door status, the system calculates a preservation demand index adapted to the current environment and determines a nitrogen filling demand command based on this index and the refrigerator door status, thereby adjusting the nitrogen filling flow rate to achieve coordinated operation of oxygen and nitrogen supply. This mechanism not only ensures food freshness but also reduces dependence on external nitrogen supply, significantly improving energy efficiency.

[0040] Figure 4 The flowchart for step S5 provided in this embodiment of the application includes environmental data such as current oxygen concentration, current carbon dioxide concentration, current humidity, and current food weight; the process may include the following steps: Step S51: Determine the oxygen concentration deviation that matches the current oxygen concentration based on the preset target oxygen concentration and oxygen concentration threshold.

[0041] Specifically, by comparing the current oxygen concentration O2 with the target oxygen concentration O target and oxygen concentration threshold O max To determine the oxygen concentration deviation. Oxygen concentration deviation = This can be used to determine whether the current oxygen concentration is within an acceptable range, and thus decide whether the oxygen supply needs to be adjusted.

[0042] When O2>O target When the value is 0, it indicates that the current oxygen concentration is higher than the target oxygen concentration. At this point, the result is positive, indicating that the oxygen concentration needs to be reduced to reach the target.

[0043] When O2 <O target When the value is zero, it indicates that the current oxygen concentration is lower than the target oxygen concentration. In this case, the result is negative, indicating that the oxygen concentration needs to be increased to reach the target.

[0044] By dividing the deviation by O max This allows the deviation to be standardized, making it within the range of 0 to 1.

[0045] For example, when O2 is close to O target When the deviation is close to 0, it means that the current oxygen concentration is very close to the target oxygen concentration, which is an ideal state for food preservation.

[0046] Step S53: Determine the carbon dioxide concentration deviation that matches the current carbon dioxide concentration based on the preset carbon dioxide concentration threshold.

[0047] Specifically, by standardizing the current carbon dioxide concentration (CO2) and the carbon dioxide concentration threshold (CO) 2_max Calculate the carbon dioxide concentration deviation. Carbon dioxide concentration deviation = The results are usually in the range of 0 to 1, which can identify whether the carbon dioxide concentration in the current environment is too high and affects the food preservation effect.

[0048] If the carbon dioxide concentration deviation is close to 0, it indicates a low carbon dioxide concentration, meaning a relatively high oxygen concentration, which is beneficial for the preservation of some foods. When CO2 equals 0, it means there is no carbon dioxide, and the deviation is 0. If the carbon dioxide concentration deviation is close to 1, it means the current carbon dioxide concentration is close to or has reached its maximum, which may affect the preservation effect of food and increase the risk of spoilage. When CO2 reaches CO... 2_max When the deviation is 1, it means that the carbon dioxide concentration in the current environment has reached its maximum limit.

[0049] Step S55: Determine the humidity deviation that matches the current humidity based on the preset target humidity and humidity threshold.

[0050] Specifically, by comparing the current humidity H with the target humidity H target and humidity threshold H max To determine the humidity deviation. Humidity deviation = This can be used to assess whether the current humidity level meets the requirements of the storage environment.

[0051] When H>H target When the current humidity is higher than the target humidity, the deviation is positive, indicating that the humidity needs to be reduced.

[0052] When H <H target When the current humidity is lower than the target humidity, the deviation is negative, indicating that the humidity needs to be increased.

[0053] By dividing the deviation by H max This allows the deviation to be standardized, ranging from 0 to 1. This makes the deviation values ​​more comparable and facilitates comprehensive evaluation with other environmental data.

[0054] Step S57: The oxygen concentration deviation, carbon dioxide concentration deviation, humidity deviation and current food weight are weighted and summed to obtain the freshness preservation demand index of the vehicle refrigerator 3 under environmental data.

[0055] Specifically, the above deviations are weighted and summed with the current food weight W to obtain the preservation requirement index, which is an important indicator for assessing whether the internal environment of the refrigerator is suitable for long-term food storage. Here, FNI stands for Freshness Demand Index; the weighting coefficients (α, β, γ, δ) of each item can be adaptively adjusted according to actual conditions to reflect the degree of influence of different environmental conditions on freshness. For example, α=0.5, β=0.2, γ=0.2, δ=0.1 are based on empirical settings, indicating that oxygen concentration has the greatest impact on freshness demand during the preservation process, followed by humidity, carbon dioxide, and food weight.

[0056] In a preferred embodiment, the adjustment of the various weight coefficients can employ a dynamic weight adjustment mechanism, initializing weights α=0.5, β=0.2, γ=0.2, and δ=0.1, while continuously monitoring data such as oxygen concentration, carbon dioxide concentration, and humidity. Historical data is calculated at each time unit (e.g., hourly) to analyze the current situation. For example, if the humidity exceeds the target humidity (e.g., 80%) within a certain period, the γ weight is increased. Through this dynamic weight adjustment mechanism, nitrogen demand control can be intelligently optimized based on real-time environmental changes. This method not only improves food preservation but also effectively reduces energy consumption, surpassing simple threshold control logic and demonstrating more intelligent and flexible management capabilities.

[0057] This embodiment calculates the oxygen concentration deviation, carbon dioxide concentration deviation, and humidity deviation under the current conditions based on preset target oxygen concentration, carbon dioxide concentration, and humidity thresholds, and then weights and sums them together with the current food weight to derive a preservation demand index. This comprehensive assessment enables the system to intelligently adjust the amount of nitrogen injected, effectively utilizing the nitrogen byproducts generated by the onboard oxygen generator, thereby reducing dependence on traditional refrigerants and improving energy efficiency.

[0058] Figure 5 The flowchart for step S7 provided in the embodiments of this application may include the following steps: Step S711: If the freshness demand index is greater than the set index value and the refrigerator door is closed, determine the nitrogen charging demand command to start nitrogen charging.

[0059] Specifically, the Freshness Demand Index (FDI) is a comprehensive indicator that reflects the freshness requirements of food under current environmental conditions. The index is calculated considering multiple factors, including oxygen concentration, carbon dioxide concentration, humidity deviation, and food weight. This means that when the FDI exceeds a set value, it indicates that the existing environmental conditions are not ideal for maintaining food freshness, potentially leading to spoilage or loss of flavor.

[0060] When the refrigerator door is open, the variable Ddoor is set to 0; when the refrigerator door is closed, the variable Ddoor is set to 1. A closed refrigerator door means that food is isolated from the external environment, which helps control the internal gas composition and temperature. When the door is closed, gas convection inside the refrigerator is reduced, and the entry of outside air and pollutants is prevented, making it easier to achieve precise regulation of the internal environment.

[0061] Therefore, nitrogen charging is only triggered when the freshness requirement index is greater than the set value and the refrigerator door is closed. This ensures that the nitrogen charging operation can more effectively reduce the oxygen concentration and improve the charging effect. During the nitrogen charging process, data such as oxygen concentration, carbon dioxide concentration, and humidity will be continuously monitored. If the freshness requirement index drops below the set value or the refrigerator is open, the nitrogen charging operation will automatically stop.

[0062] In this embodiment, when the freshness demand index exceeds a set value and the refrigerator is closed, the system initiates a nitrogen charging command to reduce the oxygen concentration, thereby extending the shelf life of food. During this process, the nitrogen byproducts generated by the onboard oxygen generator are fully utilized, achieving not only efficient resource utilization and cost reduction but also reducing dependence on external nitrogen supply, significantly lowering energy consumption. This approach optimizes overall work efficiency, improves energy utilization efficiency, and demonstrates the shared and collaborative operation of the onboard oxygen generator and the onboard refrigerator in terms of resource management.

[0063] Figure 6 The flowchart provided in this application embodiment for adjusting the nitrogen filling flow rate according to the nitrogen filling demand command may include the following steps: In step S731, if the nitrogen charging demand command is to not start nitrogen charging, then the nitrogen charging flow rate is zero.

[0064] Specifically, it is determined that the current preservation demand index has not reached the set index value requiring nitrogen charging. This may be because the internal environment of the refrigerator can still meet the food preservation requirements, and no additional adjustment of the gas composition is needed. Therefore, the nitrogen charging demand command is to not start nitrogen charging. The oil-free air compressor 1 and the vehicle refrigerator 3 are controlled by the control diversion device 4 on the nitrogen outlet of the oil-free air compressor 1 to keep the nitrogen charging valve opening at zero and the nitrogen charging flow rate at zero. That is, no more nitrogen is injected into the vehicle refrigerator 3, thereby avoiding unnecessary energy consumption and resource waste.

[0065] Step S733: If the nitrogen charging demand command is to start nitrogen charging, then determine the valve opening degree that matches the freshness demand index to adjust the nitrogen charging flow rate.

[0066] Specifically, once nitrogen charging is initiated, the valve opening is determined based on the preservation demand index. Different preservation demand indices correspond to different valve openings, and different valve openings correspond to different nitrogen charging flow rates. This information can be retrieved from a pre-stored database. For example, a higher preservation demand index indicates a greater demand for nitrogen inside the refrigerator, so the valve opening needs to be increased accordingly to allow more nitrogen to flow in. Conversely, a lower preservation demand index means a reduced nitrogen demand, so the valve opening is decreased to control the amount of nitrogen injected and prevent overcharging.

[0067] In this embodiment, when the nitrogen charging demand command is set to "not initiate nitrogen charging," the nitrogen charging flow rate is set to zero to avoid wasting nitrogen and energy when not needed. This ensures efficient resource utilization, particularly in fully utilizing the nitrogen byproducts generated by the onboard oxygen generator. Conversely, when the nitrogen charging demand command is set to "initiate nitrogen charging," the system dynamically adjusts the valve opening based on the preservation demand index, thereby precisely controlling the nitrogen charging flow rate. When the preservation demand index is high, the system increases the valve opening to meet the refrigerator's nitrogen requirements, reducing oxygen concentration and extending the shelf life of food. This flexible management approach not only improves food preservation but also effectively enhances energy efficiency.

[0068] In some preferred embodiments, nitrogen has multiple flow paths within the system, including alternative paths such as nitrogen buffer tanks and fuel tanks or battery compartments, in addition to its use for refrigeration. Nitrogen buffer tanks store excess nitrogen for use during peak demand periods, while fuel tanks or battery compartments provide inertization protection to prevent fuel evaporation or battery overheating / combustion, thereby enhancing safety.

[0069] The flow direction switching is based on sensor signals or preset conditions. When the refrigerator preservation function is activated, nitrogen will preferentially flow to the refrigerator. This decision is based on the following conditions: when the preservation demand index exceeds a set value and the refrigerator door is closed, nitrogen will preferentially flow into the vehicle refrigerator 3. In addition, in the event of a safety incident, such as when sensors detect a fire risk in the engine compartment or battery pack, the nitrogen flow direction will prioritize safety. In this case, nitrogen will be directed to the engine compartment or battery compartment for inertization to slow down the chemical reaction.

[0070] To ensure the effective operation of the system, the control logic is calculated in real time by an intelligent decision-making unit (such as an embedded microcontroller) to determine the optimal flow direction. This multi-mode flow direction control enables the dynamic optimization of nitrogen resource allocation, which not only improves food preservation efficiency but also enhances system safety and generates synergistic effects such as energy saving and space utilization, going beyond the scope of conventional resource reuse.

[0071] Accordingly, please refer to Figure 7 A block diagram of an operating device for an integrated vehicle-mounted oxygen generator and vehicle-mounted refrigerator system provided in this application embodiment. The system includes an oil-free air compressor, a molecular sieve module assembly, and a vehicle-mounted refrigerator; the operating device includes: The gas splitting unit 101 is used to input air into the molecular sieve module assembly 2 through the oil-free air compressor 1 to generate oxygen and nitrogen; wherein, the oxygen is split to the oxygen generation branch to supply oxygen to the vehicle interior; and the nitrogen is split to the nitrogen filling branch through the oil-free air compressor 1 to supply nitrogen to the vehicle refrigerator 3. The data acquisition unit 103 is used to acquire environmental data inside the vehicle refrigerator 3 and the refrigerator door status of the vehicle refrigerator 3; Demand determination unit 105 is used to determine the preservation demand index of the vehicle refrigerator 3 under environmental data. The coordinated operation unit 107 is used to determine the nitrogen filling demand command based on the freshness demand index and the refrigerator door status, and adjust the nitrogen filling flow rate according to the nitrogen filling demand command to achieve coordinated operation of oxygen supply and nitrogen supply.

[0072] In some optional implementations, environmental data includes current oxygen concentration, current carbon dioxide concentration, current humidity, and current food weight; the demand determination unit 105 includes: Based on the preset target oxygen concentration and oxygen concentration threshold, determine the oxygen concentration deviation that matches the current oxygen concentration; Based on a pre-set carbon dioxide concentration threshold, determine the carbon dioxide concentration deviation that matches the current carbon dioxide concentration; Based on the preset target humidity and humidity threshold, determine the humidity deviation that matches the current humidity; The oxygen concentration deviation, carbon dioxide concentration deviation, humidity deviation, and current food weight are weighted and summed to obtain the freshness preservation demand index of the vehicle refrigerator 3 under environmental data.

[0073] In some alternative implementations, the cooperative operation unit 107 includes: If the preservation demand index is greater than the set index value and the refrigerator door is closed, the nitrogen charging demand command is determined to start nitrogen charging.

[0074] In some alternative implementations, the cooperative operation unit 107 includes: If the nitrogen charging requirement command is to not start nitrogen charging, then the nitrogen charging flow rate is zero; If the nitrogen charging demand command is to start nitrogen charging, then determine the valve opening degree that matches the preservation demand index to adjust the nitrogen charging flow rate.

[0075] In some optional embodiments, the molecular sieve module assembly 2 includes at least two molecular sieve oxygen generating devices and at least one oxygen storage tank 21; wherein, When the first molecular sieve oxygen generator 221 is in adsorption mode, the oil-free air compressor 1 inputs air into the first molecular sieve oxygen generator 221 to produce oxygen to the oxygen storage tank 21; at the same time, the second molecular sieve oxygen generator 222 is in desorption mode and discharges the generated nitrogen to the oil-free air compressor 1.

[0076] In some alternative embodiments, the nitrogen outlet of the oil-free air compressor 1 is provided with a control diversion device 4, which is used to control the flow direction of nitrogen.

[0077] In some alternative embodiments, a nitrogen inlet 31 is provided at one bottom end of the vehicle refrigerator 3, and an outlet 32 ​​is provided at the other bottom end of the vehicle refrigerator 3.

[0078] Further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0079] In this embodiment, the operating device of the vehicle-mounted oxygen generator and vehicle-mounted refrigerator integrated system is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0080] Please see Figure 8 , Figure 8 This application provides a schematic diagram of the structure of a computer device, as shown in the embodiment of the present application. Figure 8As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 8 Take a processor 10 as an example.

[0081] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0082] The memory 20 stores instructions executable by at least one processor 10 to cause the at least one processor 10 to perform the method shown in the above embodiments.

[0083] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0084] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0085] The computer device also includes a communication interface 30 for communicating with other devices or communication networks.

[0086] This application also provides a computer-readable storage medium. The methods described in this application can be implemented in hardware or firmware, or implemented as recordable on a storage medium, or implemented as computer code downloaded over a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and subsequently stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the methods shown in the above embodiments are implemented.

[0087] The systems, devices, modules, or units described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, a computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0088] For ease of description, the above devices are described separately by function as various units. Of course, in implementing this application, the functions of each unit can be implemented in one or more software and / or hardware.

[0089] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or apparatus. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0090] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and devices according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0091] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0092] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0093] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0094] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the apparatus embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0095] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0096] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A method for operating an integrated vehicle-mounted oxygen generator and vehicle-mounted refrigerator system, characterized in that, The system includes an oil-free air compressor, a molecular sieve module assembly, and a vehicle-mounted refrigerator; the operating method includes: Air is fed into the molecular sieve module assembly via an oil-free air compressor to produce oxygen and nitrogen. The oxygen is diverted to the oxygen generation branch to supply oxygen to the vehicle interior, and the nitrogen is diverted to the nitrogen filling branch via the oil-free air compressor to supply nitrogen to the vehicle refrigerator. Acquire environmental data inside the vehicle refrigerator and the refrigerator door status; Determine the preservation requirement index that is suitable for the vehicle refrigerator under the environmental data; Based on the preservation demand index and the refrigerator door status, a nitrogen filling demand command is determined, and the nitrogen filling flow rate is adjusted according to the nitrogen filling demand command to achieve coordinated operation of oxygen supply and nitrogen supply.

2. The operating method according to claim 1, characterized in that, The environmental data includes current oxygen concentration, current carbon dioxide concentration, current humidity, and current food weight; The determination of the preservation requirement index adapted to the vehicle refrigerator under the environmental data includes: Based on the preset target oxygen concentration and oxygen concentration threshold, determine the oxygen concentration deviation that matches the current oxygen concentration; Based on a preset carbon dioxide concentration threshold, determine a carbon dioxide concentration deviation that matches the current carbon dioxide concentration; Based on the preset target humidity and humidity threshold, determine the humidity deviation that matches the current humidity; The oxygen concentration deviation, carbon dioxide concentration deviation, humidity deviation, and current food weight are weighted and summed to obtain the freshness preservation demand index of the vehicle refrigerator under the environmental data.

3. The operating method according to claim 1, characterized in that, The step of determining the nitrogen filling requirement instruction based on the preservation demand index and the refrigerator door status includes: If the freshness preservation demand index is greater than the set index value and the refrigerator door is closed, the nitrogen filling demand command is determined to start nitrogen filling.

4. The operating method according to claim 1, characterized in that, The step of adjusting the nitrogen flow rate according to the nitrogen filling demand command includes: If the nitrogen charging requirement command is to not start nitrogen charging, then the nitrogen charging flow rate is zero; If the nitrogen filling demand command is to start nitrogen filling, then determine the valve opening degree that matches the freshness preservation demand index to adjust the nitrogen filling flow rate.

5. The operating method according to claim 1, characterized in that, The molecular sieve module assembly includes at least two molecular sieve oxygen generators and at least one oxygen storage tank; wherein... When the first molecular sieve oxygen generator is in adsorption mode, the oil-free air compressor inputs air into the first molecular sieve oxygen generator to produce oxygen to the oxygen storage tank; at the same time, the second molecular sieve oxygen generator is in desorption mode and discharges the generated nitrogen to the oil-free air compressor.

6. The operating method according to claim 1, characterized in that, The nitrogen outlet of the oil-free air compressor is equipped with a flow control device, which is used to control the flow direction of the nitrogen.

7. The operating method according to claim 1, characterized in that, The vehicle refrigerator has a nitrogen inlet at one bottom end and an outlet at the other bottom end.

8. An operating device for an integrated vehicle-mounted oxygen generator and vehicle-mounted refrigerator system, characterized in that, The system includes an oil-free air compressor, a molecular sieve module assembly, and a vehicle-mounted refrigerator; the operating device includes: The gas splitting unit is used to input air into the molecular sieve module assembly through an oil-free air compressor to produce oxygen and nitrogen; wherein, the oxygen is split to the oxygen generation branch to supply oxygen to the vehicle interior; and the nitrogen is split to the nitrogen filling branch through the oil-free air compressor to supply nitrogen to the vehicle refrigerator. The data acquisition unit is used to acquire environmental data inside the vehicle refrigerator and the refrigerator door status of the vehicle refrigerator; A demand determination unit is used to determine a freshness preservation demand index that is suitable for the vehicle refrigerator under the environmental data. The collaborative operation unit is used to determine the nitrogen filling demand command based on the preservation demand index and the refrigerator door status, and adjust the nitrogen filling flow rate according to the nitrogen filling demand command to achieve the collaborative operation of oxygen supply and nitrogen supply.

9. A computer device, characterized in that, include: The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes the computer instructions to perform the operation method of the vehicle-mounted oxygen generator and vehicle-mounted refrigerator integrated system as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the operation method of the vehicle-mounted oxygen generator and vehicle-mounted refrigerator integrated system as described in any one of claims 1 to 7.

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