Air-cooled vehicle refrigerator and defrosting control method thereof

Abstract

The present application relates to the field of refrigerator control technology, and in particular to an air-cooled vehicle-mounted refrigerator and a defrosting control method thereof. It comprises: a refrigerator cover, a refrigerator cavity, a cover motor, a refrigeration unit, a cover magnetic ring, a cavity magnetic ring and an air-cooled heat dissipation unit; the refrigerator cover is hinged to the refrigerator cavity; the refrigerator cavity is equipped with the cover motor for controlling the opening and closing of the refrigerator cover; the refrigerator cavity is divided into a storage cavity and an accessory installation cavity, etc. The magnetic suction design ensures the close connection between the refrigerator cover and the cavity, effectively prevents the leakage of cold air and the entry of external moisture, enhances the sealing performance between the refrigerator cover and the cavity, improves the heat preservation effect of the refrigerator, and reduces energy consumption. Combined with the real-time monitoring of temperature, humidity and frosting status, the power of the magnetic ring and the torque of the cover motor can be dynamically adjusted to achieve efficient automatic intelligent defrosting and reduce the maintenance burden of users.

Description

Technical Field

[0001] The present application relates to the field of refrigerator control technology, and in particular to an air-cooled vehicle-mounted refrigerator and a defrosting control method thereof. Background Art

[0002] With the improvement of people's living standards, car refrigerators have become a must-have equipment for many families and self-driving trips. Car refrigerators mainly use compressor refrigeration technology or semiconductor refrigeration technology to keep food and beverages fresh.

[0003] However, in actual use, the frequent air flow when the refrigerator door is opened and closed easily causes frost to form at the opening of the refrigerator. This frost phenomenon not only affects the sealing performance of the refrigerator, but also increases power consumption, further exacerbating the frost problem, thereby affecting the refrigerator's refrigeration effect and the storage quality of the items inside. Therefore, it is particularly important to formulate a suitable defrosting strategy for vehicle refrigerators to reduce energy consumption and equipment damage, while improving usage efficiency and user experience. Summary of the invention

[0004] The present application provides an air-cooled vehicle refrigerator and a defrosting control method thereof to solve the above-mentioned problems.

[0005] In a first aspect, the present application provides an air-cooled vehicle refrigerator, comprising: a refrigerator cover, a refrigerator cavity, a cover motor, a refrigeration unit, a cover magnetic ring, a cavity magnetic ring, and an air-cooled heat dissipation unit;

[0006] The refrigerator cover is hinged to the refrigerator cavity;

[0007] The refrigerator cavity is provided with a cover motor for controlling the opening and closing of the refrigerator cover;

[0008] The refrigerator cavity is divided into a storage cavity and an accessory installation cavity;

[0009] The accessory installation cavity is provided with a refrigeration unit that fits closely with the storage cavity for cooling;

[0010] The refrigeration unit is provided with an air cooling unit;

[0011] A cover plate magnetic ring is arranged on one side of the refrigerator cover plate close to the refrigerator cavity;

[0012] A cavity magnetic ring is provided on one side of the refrigerator cavity close to the refrigerator cover;

[0013] The cavity magnetic ring is magnetically attracted to the cover plate magnetic ring after being powered on.

[0014] Optionally, a heat dissipation pipe is laid on a side of the cavity magnetic ring away from the cover plate magnetic ring; and the air-cooling heat dissipation unit dissipates heat from the cavity magnetic ring after power is supplied through the heat dissipation pipe.

[0015] Optionally, the opening of the refrigerator cavity is designed to be inclined inwardly so that water generated by defrosting flows into the inclined surface of the storage cavity.

[0016] In a second aspect, the present application provides a defrosting control method for an air-cooled vehicle refrigerator, wherein the air-cooled vehicle refrigerator further comprises: a plurality of built-in temperature and humidity sensors; the method comprises:

[0017] The temperature and humidity inside the refrigerator and the temperature and humidity at the opening of the refrigerator cavity are monitored in real time by a plurality of built-in temperature and humidity sensors of the air-cooled vehicle refrigerator to obtain internal temperature data, internal humidity data, opening temperature data and opening humidity data of the refrigerator;

[0018] Acquire the closing stop state of the cover motor and determine the opening angle of the refrigerator cover;

[0019] Determining a frosting state at the opening of the refrigerator cavity according to the internal temperature data, the internal humidity data, the opening temperature data, the opening humidity data, and the opening angle;

[0020] If the judgment result is frosting, a defrosting method for controlling the power of the cavity magnetic coil and a control method for controlling the torque of the cover motor are formulated according to the temperature data at the opening, the humidity data at the opening, the opening angle and the frosting state.

[0021] Through the above technical solution, the built-in temperature and humidity sensor can monitor the temperature and humidity data inside and at the opening of the refrigerator in real time, accurately judge the frosting state, and take corresponding defrosting measures to avoid the frosting problem of traditional car refrigerators. Based on the real-time monitoring data, a customized defrosting strategy is formulated according to different frosting conditions. This strategy can be adjusted according to the specific amount of frosting, thereby optimizing the defrosting process, reducing unnecessary energy consumption, and protecting the internal structure of the refrigerator. The refrigerator cover is controlled by the opening and closing of the cavity magnetic ring. This design not only simplifies the structure, but also improves the sealing and reduces the loss of cold air; in addition, the control of the cavity magnetic ring power also provides a reliable regional defrosting basis for intelligent frost control. Frosting control can be further optimized by accurately controlling the opening angle of the refrigerator cover. This precise control ensures that both energy consumption and mechanical stress during the defrosting process are minimized, thereby extending the service life of the refrigerator.

[0022] Optionally, judging the frosting state at the opening of the refrigerator cavity according to the internal temperature data, the internal humidity data, the opening temperature data, the opening humidity data and the opening angle includes:

[0023] Analyze the internal temperature data and the internal humidity data to determine the temperature and humidity environment inside the refrigerator;

[0024] Analyze the temperature data at the opening and the humidity data at the opening to determine the temperature and humidity environment at the opening of the refrigerator;

[0025] Compare the temperature and humidity environment inside the refrigerator with the temperature and humidity environment at the refrigerator opening to obtain the temperature and humidity difference at the refrigerator opening;

[0026] Determining whether potential conditions for frosting are met according to the temperature and humidity difference;

[0027] If satisfied, the load torque of the cover motor is obtained;

[0028] Determining the amount of frost at the opening according to the opening angle and the load torque;

[0029] The frosting state at the opening of the refrigerator cavity is determined according to the potential conditions for frosting and the amount of frosting at the opening.

[0030] Through the above technical solution, by analyzing multiple parameters (temperature and humidity data, opening angle, cover motor torque, etc.), the frosting state can be judged more accurately. Compared with the method that relies on a single data source, this multi-parameter comprehensive analysis can effectively reduce the possibility of misjudgment and avoid the situation where the refrigerator cover is artificially affected or foreign objects restrict the fastening. During the defrosting process, the operation can be monitored and adjusted in real time to ensure the defrosting effect while avoiding excessive or insufficient defrosting. Whether to defrost and the intensity of defrosting are determined according to the actual frosting state, avoiding unnecessary defrosting operations. This on-demand defrosting method can effectively reduce the waste of electric energy and improve the overall energy efficiency of the refrigerator. By dynamically adjusting the torque output of the motor, it is ensured that the cover can still operate smoothly in the frosting state, avoiding motor overload or energy waste caused by excessive frosting. By accurately controlling the torque of the cover motor, the stress on the motor and mechanical parts can be effectively reduced in the frosting state, avoiding damage caused by excessive mechanical resistance, thereby extending the service life of the refrigerator. The defrosting power and time can be dynamically adjusted according to the actual situation of the frost layer, avoiding damage to the internal structure and materials of the refrigerator due to excessive defrosting.

[0031] Optionally, the amount of frost at the opening is determined according to the opening angle and the load-bearing torque and is calculated according to the following formula:

[0032] ;

[0033] in, is the amount of frosting; is the influence coefficient of refrigerator structure on frosting thickness; is the opening angle of the refrigerator cover; To carry torque; The effective radius between the refrigerator cover and the hinge point; The temperature difference between the inside of the refrigerator and the refrigerator opening; It is the physical constant for correcting the temperature difference to the amount of frost; Frost thickness as a function of time.

[0034] Through the above technical solutions, the traditional method of calculating the amount of frosting usually focuses on a single factor or a simple empirical formula, which may ignore the comprehensive influence of multiple factors on the amount of frosting. This new calculation method can more comprehensively reflect the influence of actual working conditions on the amount of frosting by introducing multiple key physical parameters (such as opening angle, load torque, temperature difference, etc.), and improve the accuracy and applicability of the calculation. The existing technology is often based on the analysis under static or instantaneous conditions, and does not fully consider the time dynamics of the frosting process. By introducing the time function, this method can describe how the frosting thickness changes over time, thereby realizing the dynamic prediction of the amount of frosting at different time points; temperature difference is an important factor affecting the frosting process, but the treatment of temperature difference in traditional methods is often relatively simple. This method accurately corrects the influence of temperature difference by introducing temperature coefficients and physical constants, making the calculation results more physically meaningful. Compared with empirical formulas or regression models based on experimental data, the parameterized model based on physical mechanisms of this method has better scalability. By adjusting the parameters, the model can adapt to different types of refrigerator designs and the characteristics of different materials, and has a wide range of application potential.

[0035] Optionally, judging the frosting state at the opening of the refrigerator cavity according to the potential frosting condition and the amount of frosting at the opening includes:

[0036] If the amount of frost at the opening is greater than a preset thickness threshold, the frosting state is determined as frost existing at the opening of the refrigerator cavity;

[0037] If the amount of frost at the opening is less than or equal to the preset thickness threshold, then judging whether the temperature and humidity difference in the current environment meets the frost condition according to the potential frost condition;

[0038] If the frosting condition is met, the frosting state is judged as the possibility of frosting at the opening of the refrigerator cavity;

[0039] If the frosting condition is not met, the frosting state is judged as the absence of frost at the opening of the refrigerator cavity.

[0040] Through the above technical solution, the method not only considers the size of the frost amount, but also combines the temperature and humidity differences for comprehensive judgment. Conventional methods may only make judgments based on a single parameter (such as temperature or humidity), which may lead to errors in the judgment results. This method greatly improves the accuracy of judging the frosting state and reduces the possibility of misjudgment by combining multiple factors. It can monitor the frost amount and environmental conditions in real time and make dynamic judgments based on the latest data. Compared with conventional methods that rely on preset rules and fixed thresholds, this dynamic judgment can better adapt to environmental changes, such as temperature fluctuations or humidity changes, to ensure the real-time and accuracy of frosting state judgment. By combining the judgment of frost amount and environmental conditions, it is possible to issue an early warning when there is only a potential risk of frost, rather than immediately triggering the defrosting operation. This precise judgment helps to reduce unnecessary defrosting operations, reduce power consumption, and improve the energy efficiency of refrigerators. Conventional methods may trigger defrosting when the frost amount slightly exceeds the threshold, resulting in energy waste.

[0041] Optionally, judging whether the temperature and humidity difference in the current environment meets the frosting condition according to the potential frosting condition includes:

[0042] According to the internal temperature data, the opening temperature data, and the refrigerator opening humidity data, the frost risk index at the refrigerator opening is determined and calculated according to the following formula:

[0043] ;

[0044] in, is the frost risk index; is the internal temperature data; is the temperature data at the opening; It is the humidity data at the refrigerator opening; is the weight coefficient of the refrigerator temperature difference affecting frosting; is the weight coefficient of the effect of humidity at the refrigerator opening on frost formation;

[0045] If the frost risk index is greater than a preset risk index, it is determined that the temperature and humidity difference in the current environment meets the frost conditions.

[0046] Through the above technical solution, the method comprehensively considers multiple key factors such as the temperature inside the refrigerator, the temperature at the opening and the humidity data, and uses the weight coefficient and The impact of each factor is quantified, so that the risk of frost can be assessed more accurately. To reflect the impact of temperature differences on frost risk, it can more sensitively capture the potential impact of temperature changes on frost, and improve the accuracy of frost judgment. By real-time monitoring of temperature and humidity data, the system can dynamically adjust the judgment results according to the latest environmental conditions. Based on the calculated frost risk index, the system can automatically determine whether defrosting measures are needed without relying on manual intervention, which improves the intelligence level of the system.

[0047] Optionally, the defrosting method for controlling the power of the cavity magnetic coil and the control method for controlling the torque of the cover motor are formulated according to the opening temperature data, the opening humidity data, the opening angle and the frosting state, including:

[0048] If the frosting state is judged as the presence of frost at the opening of the refrigerator cavity or the possibility of frost at the opening of the refrigerator cavity, based on the judgment result, the real-time power of the cavity magnetic coil is controlled so that the cavity magnetic coil is energized to generate heat to melt the frosted part.

[0049] If the frosting state is judged as the presence of frost at the opening of the refrigerator cavity, the rotational torque of the cover motor is controlled in real time according to the frosting state and the opening angle to control the refrigerator cover to squeeze and crush the frosted part; by controlling the real-time power of the cavity magnetic coil, the cavity magnetic coil is energized to generate heat to melt the frosted part.

[0050] The defrosting method includes controlling the power of the cavity magnetic coil when the cavity magnetic coil is energized to generate heat to melt the frosted part, and adjusting the rotational torque of the cover motor when the refrigerator cover squeezes and crushes the frosted part.

[0051] Through the above technical scheme, compared with the traditional timed defrosting method, this method dynamically adjusts the defrosting process according to real-time data, which can eliminate frost more quickly and effectively, reduce unnecessary heating time, and save energy. By combining the data of temperature, humidity, opening angle and frosting state, more accurate defrosting control can be achieved, avoiding excessive or insufficient defrosting operations, thereby extending the service life of the refrigerator. Dynamically adjusting the power of the cavity magnetic ring and the torque of the cover motor avoids energy waste in the traditional defrosting process and optimizes energy consumption. By optimizing the defrosting process, the mechanical stress and thermal stress of the internal components of the refrigerator are reduced, significantly extending the service life of the equipment. The system can monitor and automatically adjust the defrosting process in real time, reduce the user's maintenance requirements, and improve the user experience. Through the adaptive adjustment algorithm, the system can adapt to different frosting states and improve the flexibility and stability of defrosting.

[0052] According to the frosting state, the real-time power of the cavity magnetic ring is controlled and calculated according to the following formula:

[0053] ;

[0054] in, is the real-time power of the cavity magnetic coil; is the density of ice; is the contact area between the refrigerator cover and the refrigerator cavity; is the relationship coefficient between the opening angle and thickness of the refrigerator cover; is the opening angle of the refrigerator cover; is the specific heat capacity of ice; is the temperature difference between the current temperature and 0°C; is the latent heat of melting of ice; It is the stable operating power of the magnetic coil in the cavity when the refrigerator cover is closed.

[0055] Through the above technical solution, the formula comprehensively considers the physical properties of ice: density, specific heat capacity, latent heat and actual temperature, opening angle, and can dynamically adjust the power in real time according to the frosting state. By introducing the basic power, it ensures that when a large amount of melting heat is not required, such as in the case of slight frost or no frost, the power consumption remains at a low level, which plays a buckling magnetic attraction effect, avoids the situation of loose buckling, and effectively saves energy. According to the heat demand calculated based on the thickness of the ice, temperature changes and melting latent heat, it can provide enough heat to quickly melt the frost while avoiding energy waste from overheating or prolonged heating. Consider the relationship coefficient between the opening angle and thickness of the refrigerator cover and the opening angle of the refrigerator cover , so that the system can automatically adapt to different frosting conditions and make corresponding power adjustments to ensure that the defrosting process is both efficient and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0057] Figure 1 A schematic diagram of an application scenario provided for an embodiment of the present application;

[0058] Figure 2 A flow chart of a defrosting control method for an air-cooled vehicle refrigerator provided in one embodiment of the present application;

[0059] Figure 3 A schematic diagram of the structure of an air-cooled vehicle refrigerator provided in one embodiment of the present application.

[0060] Figure 4A cross-sectional view of the structure of an air-cooled vehicle refrigerator provided in one embodiment of the present application.

[0061] Figure 5 An embodiment of the present application provides Figure 4 Enlarged view of area A in the middle. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0063] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0064] The embodiments of the present application are further described in detail below in conjunction with the drawings in the specification.

[0065] In the actual use of refrigerators, the frequent air flow when opening and closing the refrigerator door easily leads to frost on the refrigerator opening. This frost phenomenon not only affects the sealing performance of the refrigerator, but also increases power consumption, further exacerbating the frost problem, thus affecting the refrigerator's refrigeration effect and the storage quality of the internal items. Therefore, it is particularly important to formulate a suitable defrosting strategy for vehicle refrigerators to reduce energy consumption and equipment damage, while improving usage efficiency and user experience.

[0066] Based on this, the present application provides an air-cooled vehicle refrigerator and a defrosting control method thereof. Through a built-in temperature and humidity sensor, the temperature and humidity data inside and at the opening of the refrigerator can be monitored in real time, and the frosting state can be accurately determined, so that corresponding defrosting measures can be taken to avoid the frosting problem of traditional vehicle refrigerators. Based on the real-time monitoring data, a customized defrosting strategy is formulated according to different frosting conditions. This strategy can be adjusted according to the specific amount of frosting, thereby optimizing the defrosting process, reducing unnecessary energy consumption, and protecting the internal structure of the refrigerator. The refrigerator cover is controlled by the opening and closing of the cavity magnetic ring. This design not only simplifies the structure, but also improves the sealing and reduces the loss of cold air; in addition, the control of the cavity magnetic ring power also provides a reliable regional defrosting basis for intelligent frost control. Frosting control can be further optimized by accurately controlling the opening angle of the refrigerator cover. This precise control ensures that energy consumption and mechanical stress during the defrosting process are minimized, thereby extending the service life of the refrigerator.

[0067] Figure 1 A schematic diagram of an application scenario provided for the present application. When frosting occurs at the opening of the refrigerator, the method provided by the present application is applied. Specifically, the method provided by the present application is applied to any server, and the server interacts with the air-cooled vehicle refrigerator. Through the built-in temperature and humidity sensor, the temperature and humidity data inside the refrigerator and at the opening can be monitored in real time, and the frosting state can be accurately determined, so as to take corresponding defrosting measures to avoid the frosting problem of traditional vehicle refrigerators. Based on the real-time monitoring data, a customized defrosting strategy is formulated according to different frosting conditions. This strategy can be adjusted according to the specific amount of frosting, thereby optimizing the defrosting process. The refrigerator cover is opened and closed by the cavity magnetic ring to improve the sealing and reduce the loss of cold air; in addition, the control of the cavity magnetic ring power also provides a reliable regional defrosting basis for intelligent frost control. By accurately controlling the opening angle of the refrigerator cover, it is ensured that the energy consumption and mechanical stress during the defrosting process are minimized, thereby extending the service life of the refrigerator.

[0068] For specific implementation methods, please refer to the following embodiments.

[0069] Figure 2 This is a flow chart of a defrosting control method for an air-cooled vehicle refrigerator provided in an embodiment of the present application. The method of this embodiment can be applied to the server in the above scenario; the air-cooled vehicle refrigerator also includes: a plurality of built-in temperature and humidity sensors. Figure 2 As shown, the method includes:

[0070] S201. Monitor the temperature and humidity inside the refrigerator and the temperature and humidity at the opening of the refrigerator cavity in real time through several built-in temperature and humidity sensors of the air-cooled car refrigerator to obtain internal temperature data, internal humidity data, opening temperature data and opening humidity data of the refrigerator.

[0071] The internal temperature data may be a temperature measurement value of an internal storage space of an air-cooled vehicle refrigerator.

[0072] The internal humidity data may be a humidity measurement value of an internal storage space of the vehicle refrigerator.

[0073] The opening temperature data may be a temperature measurement value of an area near the opening or door of the vehicle refrigerator.

[0074] The opening humidity data may be a humidity measurement value of an area near the opening or door of the vehicle refrigerator.

[0075] Specifically, air-cooled car refrigerators are often used in hot or humid environments in summer. Users frequently open and close the refrigerator to take out food or drinks. When the refrigerator door is opened, the high temperature and high humidity air outside quickly enters the refrigerator and meets the cold air inside, causing the temperature and humidity at the refrigerator opening to change dramatically. This temperature and humidity difference will cause water vapor to quickly condense into frost at the refrigerator opening, especially when the door is opened and closed frequently. The frost layer may accumulate in a short time. In some cases, when using air-cooled car refrigerators for activities such as camping, the temperature in the car may rise rapidly every time the vehicle stops, and the temperature and humidity changes at the refrigerator opening are more prominent.

[0076] To this end, temperature and humidity sensors are installed inside the refrigerator and at the opening respectively. The sensors continuously collect temperature and humidity data inside the refrigerator (internal temperature data, internal humidity data) and temperature and humidity data at the opening of the refrigerator (opening temperature data, opening humidity data), and transmit the data to the server.

[0077] S202, obtaining the closing stop state of the cover motor and determining the opening angle of the refrigerator cover.

[0078] The cover stop state may be a state in which the cover motor stops moving during the opening and closing process of the refrigerator cover.

[0079] The opening angle can be the angle between the refrigerator cover and the refrigerator body, usually expressed in degrees. The opening angle can be used to describe the degree of opening of the refrigerator cover. For example, the opening angle is 0 degrees when fully closed, and it may be 90 degrees or more when fully open.

[0080] Specifically, when frost forms at the opening of the refrigerator, frost forms at the opening when the cover motor controls the refrigerator cover to snap together, causing the cover motor to use conventional snap-in torque during the snap-in process and fail to snap together, resulting in a certain opening angle of the refrigerator cover. Therefore, it is necessary to integrate an encoder on the rotating shaft of the cover motor to accurately detect the angle of motor rotation, thereby determining the opening and closing state and specific opening angle of the refrigerator cover, and to determine whether the cover motor is in a stopped state by reading the motor control signal; the motor stopping means that the cover is in a stable opening and closing state, at which time the current angle data of the motor can be obtained, and the current opening angle of the refrigerator cover can be obtained by combining the angle data when the motor stops and the preset calibration reference (for example, the angle when the refrigerator cover is fully closed is zero).

[0081] S203, judging the frosting state at the opening of the refrigerator cavity according to the internal temperature data, the internal humidity data, the opening temperature data, the opening humidity data and the opening angle.

[0082] The frosting state can be the specific situation of frost formation at the opening of the refrigerator due to changes in temperature and humidity. It can reflect whether frost is formed at the opening of the refrigerator, the thickness of the frost, and the range covered by the frost layer. The frosting state can be divided into different levels such as no frost, light frost, moderate frost and heavy frost.

[0083] Specifically, in the actual use of the refrigerator, there may be human operation that causes the vehicle refrigerator to not be closed tightly, or there are different frosting states, and it is impossible to use a unified defrosting method. Therefore, all the collected temperature, humidity and opening angle data are integrated. The integrated data will be used as input data in the subsequent judgment process to help analyze the current frosting state. First, the temperature and humidity data inside the refrigerator and at the opening are analyzed for differences. Through a temperature and humidity thickness threshold range stored in a preset database, when the temperature and humidity at the opening are detected to exceed these thickness thresholds, the system considers that there is a potential possibility of frosting. Combined with the input data of the opening angle, if the opening angle is large and the temperature and humidity difference is obvious, the system judges that the possibility of frosting is higher. The risk of frosting is lower at a small opening angle, so a frosting state judgment model can be set based on a machine learning algorithm to comprehensively analyze all input data and determine whether there is frosting at present through model calculation.

[0084] S204, if the judgment result is frosting, a defrosting method for controlling the power of the cavity magnetic coil and a control method for controlling the torque of the cover motor are formulated according to the opening temperature data, the opening humidity data, the opening angle and the frosting state.

[0085] Specifically, in the previous step, the current frosting state has been determined based on a number of real-time data. When the judgment result shows frosting, the system needs to enter the defrosting control process, and further analyze the temperature data at the opening, the humidity data at the opening, and the data of the opening angle. These data will be used to determine the specific location of the frosting, the thickness of the frost layer, and the expansion trend of the frost. According to the frosting state, the specific method of defrosting is determined. The temperature and humidity data at the opening and the opening angle data can help the system determine the location and distribution of the frost layer and calculate the magnetic coil power required for defrosting. More serious frosting requires higher magnetic coil power to heat and melt the frost layer, while mild frosting may only require lower power. According to the analysis results of further analysis, the heating power of the cavity magnetic coil is dynamically adjusted. The power of the magnetic coil can be accurately adjusted by pulse width modulation (PWM) or other control methods to ensure that the defrosting process is both effective and energy-saving. During the defrosting process, the system continuously monitors the temperature data at the opening to ensure that the temperature is within a safe range and the defrosting effect is good. When the frost layer gradually melts and disappears, the magnetic coil power is gradually reduced to avoid overheating. Adjust the torque output of the cover motor according to the opening angle and frosting status. If the degree of frost is heavy, the refrigerator cover may be difficult to close or open due to the frost layer, and the torque of the motor needs to be appropriately increased to ensure smooth movement of the cover. As defrosting progresses, the frost layer gradually disappears, and the torque requirement of the cover motor also decreases.

[0086] When the above-mentioned defrosting work is completed, it is detected that the frost layer is completely melted, the temperature and humidity at the opening return to normal, and the cover can be opened and closed normally, the defrosting operation is ended. After the defrosting is completed, the magnetic coil power and motor torque are restored to normal refrigeration state, and the energy-saving mode is entered to reduce unnecessary energy consumption.

[0087] Through the method provided by this embodiment, the built-in temperature and humidity sensor can monitor the temperature and humidity data inside and at the opening of the refrigerator in real time, accurately judge the frosting state, and take corresponding defrosting measures to avoid the frosting problem of traditional car refrigerators. Based on the real-time monitoring data, a customized defrosting strategy is formulated according to different frosting conditions. This strategy can be adjusted according to the specific amount of frosting, thereby optimizing the defrosting process, reducing unnecessary energy consumption, and protecting the internal structure of the refrigerator. The refrigerator cover is controlled by the opening and closing of the cavity magnetic ring. This design not only simplifies the structure, but also improves the sealing and reduces the loss of cold air; in addition, the control of the cavity magnetic ring power also provides a reliable regional defrosting basis for intelligent frost control. Frosting control can be further optimized by accurately controlling the opening angle of the refrigerator cover. This precise control ensures that energy consumption and mechanical stress during the defrosting process are minimized, thereby extending the service life of the refrigerator.

[0088] In some embodiments, the internal temperature data and the internal humidity data are analyzed to determine the temperature and humidity environment inside the refrigerator; the temperature data and the humidity data at the opening are analyzed to determine the temperature and humidity environment at the opening of the refrigerator; the temperature and humidity environment inside the refrigerator and the temperature and humidity environment at the opening of the refrigerator are compared to obtain the temperature and humidity difference at the opening of the refrigerator; based on the temperature and humidity difference, it is determined whether the potential conditions for frosting are met; if so, the load torque of the cover motor is obtained; based on the opening angle and the load torque, the amount of frost at the opening is determined; based on the potential conditions for frost and the amount of frost at the opening, the frosting state at the opening of the refrigerator cavity is judged.

[0089] The temperature and humidity difference condition may be a difference in temperature and humidity between the inside of the refrigerator and the opening.

[0090] Potential conditions for frost formation may be those that meet the basic environmental conditions for frost formation, usually including: a temperature below the dew point temperature of the air (moisture in the air will condense into frost) and a high humidity environment.

[0091] The load-bearing torque may be the moment of force of the cover motor when closing the refrigerator cover when there is an opening.

[0092] The amount of frost can be the thickness of the frost layer formed inside or on the opening of the refrigerator.

[0093] Specifically, the temperature and humidity environment inside the refrigerator is compared with the temperature and humidity environment at the opening. By analyzing the change range of temperature and humidity, it can be preliminarily determined whether there is a possibility of frost at the opening of the refrigerator. A large temperature and humidity difference usually means that the moisture in the air may condense at the opening to form a frost layer. According to the temperature and humidity difference, it is determined whether the potential conditions for frost formation are met. If the temperature at the opening is lower than the dew point temperature and the humidity is high, the frost condition is met. Only when the potential conditions for frost formation are met can the misjudgment problem caused by the poor buckling of the refrigerator cover due to external factors be avoided. Therefore, when it is determined that the frosting condition is established, the current opening angle data is combined to obtain the load torque data of the cover motor, and the torque change of the refrigerator cover when it is closed is analyzed. The larger load torque indicates that the frost layer has created resistance to the movement of the cover. According to the comprehensive analysis of the opening angle and the load torque, the thickness of the frost layer at the opening is determined. If the torque increases abnormally at a smaller angle, there is a thicker frost layer.

[0094] Through the method provided by this embodiment, by analyzing multiple parameters (temperature and humidity data, opening angle, cover motor torque, etc.), the frosting state can be judged more accurately. Compared with the method that relies on only a single data source, this multi-parameter comprehensive analysis can effectively reduce the possibility of misjudgment, and also avoid the situation where the refrigerator cover is artificially affected or the foreign matter restricts the buckling. During the defrosting process, the operation can be monitored and adjusted in real time to ensure the defrosting effect while avoiding excessive or insufficient. Whether to defrost and the intensity of defrosting are determined according to the actual frosting state, avoiding unnecessary defrosting operations. This on-demand defrosting method can effectively reduce the waste of electric energy and improve the overall energy efficiency of the refrigerator. By dynamically adjusting the torque output of the motor, it is ensured that the cover can still operate smoothly in the frosting state, avoiding motor overload or energy waste caused by excessive frosting. By accurately controlling the torque of the cover motor, the stress on the motor and mechanical components can be effectively reduced in the frosting state, avoiding damage caused by excessive mechanical resistance, thereby extending the service life of the refrigerator. The defrosting power and time can be dynamically adjusted according to the actual situation of the frost layer, avoiding damage to the internal structure and materials of the refrigerator due to excessive defrosting.

[0095] In some embodiments, the amount of frost at the opening is determined based on the opening angle and the load torque, and is calculated according to the following formula (1):

[0096] (1);

[0097] in, is the amount of frosting; is the influence coefficient of refrigerator structure on frosting thickness; is the opening angle of the refrigerator cover; To carry torque; The effective radius between the refrigerator cover and the hinge point; The temperature difference between the inside of the refrigerator and the refrigerator opening; It is the physical constant for correcting the temperature difference to the amount of frost; Frost thickness as a function of time.

[0098] The function of frost thickness changing with time is calculated according to the following formula (2):

[0099] (2);

[0100] in, For in time stage, the growth rate of frost thickness over time; is the time threshold; For in time stage, the initial rate of change of frost thickness with time; In time stage, which is the growth rate of frost thickness over time.

[0101] The effective radius between the refrigerator cover and the hinge point may be the distance between the center of the cover and the hinge point (rotation axis) during the rotation of the cover.

[0102] Specifically, frost is formed at the edge of the refrigerator opening, and the frost thickness is uniform. Due to the existence of frost, there is an opening in the refrigerator cover. If the refrigerator cover is closed normally, the opening angle is 0°. Because the frost thickness cannot be measured directly, the frost thickness is reflected by the opening angle of the refrigerator cover. When the refrigerator cover is opened at a certain angle, external moisture enters the refrigerator and contacts the cold air to form a frost layer. Therefore, the amount of frost It is proportional to the opening angle. The larger the opening angle, the higher the frequency of air exchange, and the faster the frost layer forms. As the frost layer increases, the resistance when the refrigerator cover is closed will increase, causing the motor to apply a larger torque. Therefore, the amount of frost is also proportional to the load torque. The greater the torque, the thicker the frost layer. A larger temperature difference will accelerate the condensation of moisture in the air, thereby increasing the thickness of the frost layer. Through the physical constant The correction is done and directly affects the amount of frost. Frosting is a dynamic process and therefore requires a time function. Define how the frost thickness changes over time. When using formula (1) for calculation, first collect the opening angle and load torque of the refrigerator cover in real time through the cover motor; the temperature sensor measures the temperature inside and outside the refrigerator and calculates the temperature difference; according to the design of the refrigerator cover, the effective radius is obtained from the preset database; the measured parameters are substituted into formula (1) to calculate the frost amount at the current moment.

[0103] The frosting process usually has stage characteristics. In the initial stage, the amount of frosting is relatively slow because the equipment has just started to operate or the environmental changes are not significant. However, as time goes by and the frost layer gradually accumulates, the frosting rate may accelerate, especially when the temperature drops and the humidity increases. Therefore, the function of the change of frost thickness over time is a piecewise function to accurately reflect the frosting dynamics at different stages. By dividing time into two stages, we can accurately describe the frosting behavior of each stage: Stage 1: The frosting rate is low and the frost thickness increases linearly with time. This stage usually occurs at the beginning of frosting, when the temperature difference between the inside and outside of the refrigerator or equipment is small and the humidity changes slowly. Stage 2: As the frost layer accumulates to a certain extent, the frosting rate increases and the frost thickness increases exponentially with time. This is related to the continuous decrease in the temperature inside the equipment, the increase in humidity, or the change in the physical properties of the frost layer itself. Determine the rate of the linear growth stage through experimental data or historical data; analyze the data to find the time point when the frosting rate changes significantly; use data fitting or experiments to determine the initial change rate and exponential growth rate.

[0104] Through the method provided by this embodiment, the traditional method for calculating the amount of frosting usually focuses on a single factor or a simple empirical formula, and may ignore the comprehensive influence of multiple factors on the amount of frosting. This new calculation method can more comprehensively reflect the influence of actual working conditions on the amount of frosting by introducing multiple key physical parameters (such as opening angle, load torque, temperature difference, etc.), thereby improving the accuracy and applicability of the calculation. The prior art is often based on analysis under static or transient conditions, and does not fully consider the time dynamics of the frosting process. By introducing a time function, this method can describe how the frosting thickness changes over time, thereby realizing the dynamic prediction of the amount of frosting at different time points; the temperature difference is an important factor affecting the frosting process, but the treatment of the temperature difference in traditional methods is often relatively simple. This method accurately corrects the influence of the temperature difference by introducing a temperature coefficient and a physical constant, making the calculation result more physically meaningful. Compared with empirical formulas or regression models based on experimental data, the parameterized model based on physical mechanisms of this method has better scalability. By adjusting the parameters, the model can adapt to different types of refrigerator designs and the characteristics of different materials, and has a wide range of application potential.

[0105] The function of the change of frost thickness over time is to accurately reflect the dynamic changes of the frosting process through staged modeling. The separation of the linear stage and the exponential stage ensures that the model can adapt to the frosting behavior under different environments and working conditions. The design of this piecewise function provides a more accurate defrosting control method for the equipment, which helps to improve the operating efficiency of the equipment and reduce unnecessary energy consumption.

[0106] In some embodiments, if the amount of frost at the opening is greater than a preset thickness threshold, the frosting state is judged as the presence of frost at the opening of the refrigerator cavity; if the amount of frost at the opening is less than or equal to the preset thickness threshold, then based on the potential conditions for frosting, it is judged whether the temperature and humidity differences in the current environment meet the frosting conditions; if the frosting conditions are met, the frosting state is judged as the possibility of frost at the opening of the refrigerator cavity; if the frosting conditions are not met, the frosting state is judged as the absence of frost at the opening of the refrigerator cavity.

[0107] The preset thickness threshold may be a critical value of frost thickness set when judging the frosting state, and may be stored in a preset database.

[0108] Frosting conditions may be environmental factors that need to be met for a frost layer to form inside or on an opening of a refrigerator.

[0109] Specifically, the amount of frost at the opening is measured and calculated in real time according to the calculation formula of the opening angle and the load torque, and the measured amount of frost is compared with the preset thickness threshold. If it is greater than the preset thickness threshold, it is judged that there is frost at the opening of the refrigerator cavity; if it is less than or equal to the preset thickness threshold, the temperature and humidity difference in the current environment will be further analyzed: the temperature and humidity inside the refrigerator and at the opening are compared to determine whether there is a significant temperature and humidity difference. If the temperature and humidity difference meets the potential conditions for frost; for example, if the temperature at the opening is lower than the dew point and the humidity is high, it is considered that there is a possibility of frost. If the temperature and humidity difference does not meet the potential conditions for frost, it is judged that the current environment is not conducive to frost formation. According to the analysis of the first two steps, the frosting state is confirmed: if the amount of frost is greater than the thickness threshold, it is confirmed that there is frost and the defrosting operation is triggered; if the amount of frost is small but meets the potential frost conditions, it is judged that there is a possibility of frost, and it may enter the early warning state and prepare for the defrosting operation; if the amount of frost is small and does not meet the frost conditions, it is judged that there is no frost at the opening.

[0110] Through the method provided by this embodiment, the method not only considers the size of the frosting amount, but also combines the temperature and humidity differences for comprehensive judgment. Conventional methods may only make judgments based on a single parameter (such as temperature or humidity), which may lead to errors in the judgment results. However, this method greatly improves the accuracy of judging the frosting state and reduces the possibility of misjudgment by combining multiple factors. It can monitor the frosting amount and environmental conditions in real time and make dynamic judgments based on the latest data. Compared with conventional methods that rely on preset rules and fixed thresholds, this dynamic judgment can better adapt to environmental changes, such as temperature fluctuations or humidity changes, and ensure the real-time and accuracy of frosting state judgment. By combining the judgment of frosting amount and environmental conditions, it is possible to issue an early warning when there is only a potential risk of frosting, rather than immediately triggering the defrosting operation. This accurate judgment helps to reduce unnecessary defrosting operations, reduce power consumption, and improve the energy efficiency of refrigerators. Conventional methods may trigger defrosting when the frosting amount slightly exceeds the threshold, resulting in energy waste.

[0111] In some embodiments, the frost risk index at the refrigerator opening is determined based on the internal temperature data, the opening temperature data, and the refrigerator opening humidity data, and is calculated according to the following formula (3):

[0112] (3);

[0113] in, is the frost risk index; is the internal temperature data; is the temperature data at the opening; It is the humidity data at the refrigerator opening; is the weight coefficient of the refrigerator temperature difference affecting frosting; is the weight coefficient of the effect of humidity at the refrigerator opening on frost formation;

[0114] If the frost risk index is greater than the preset risk index, it is determined that the temperature and humidity differences in the current environment meet the frost conditions.

[0115] The preset risk index may be a reference value for determining the frost risk and may be stored in a preset database.

[0116] Specifically, first, calculate the temperature inside the refrigerator and opening temperature The temperature difference between Then, we plug this temperature difference into the exponential function , calculate the temperature difference impact factor. Multiply the calculated temperature difference impact factor by the weight coefficient , and obtain the contribution value of temperature difference to frost risk index. At the same time, the humidity data at the opening Multiply by the weight factor of humidity effect , and get the contribution value of humidity to the frost risk index. Add the temperature difference impact value and the humidity impact value to get the frost risk index The calculated frost risk index Compare with the preset risk index threshold. If the temperature and humidity difference is greater than the preset threshold, it is judged that the current temperature and humidity difference meets the frost condition, which may trigger an early warning or defrost operation. If it is less than or equal to the preset threshold, it is judged that the current environment does not meet the frosting conditions and the system maintains normal operation.

[0117] Through the method provided in this embodiment, the method comprehensively considers multiple key factors such as the temperature inside the refrigerator, the temperature at the opening and the humidity data, and uses the weight coefficient and The impact of each factor is quantified, so that the risk of frost can be assessed more accurately. To reflect the impact of temperature differences on frost risk, it can more sensitively capture the potential impact of temperature changes on frost, and improve the accuracy of frost judgment. By real-time monitoring of temperature and humidity data, the system can dynamically adjust the judgment results according to the latest environmental conditions. Based on the calculated frost risk index, the system can automatically determine whether defrosting measures are needed without relying on manual intervention, which improves the intelligence level of the system.

[0118] In some embodiments, if the frosting state is judged as the presence of frost at the opening of the refrigerator cavity or the possibility of frost at the opening of the refrigerator cavity, then according to the judgment result, the real-time power of the cavity magnetic coil is controlled so that the cavity magnetic coil is energized to generate heat to melt the frosted part; if the frosting state is judged as the presence of frost at the opening of the refrigerator cavity, the rotational torque of the cover motor is controlled in real time according to the frosting state and the opening angle to control the refrigerator cover to squeeze and crush the frosted part; the method of controlling the power of the cavity magnetic coil when the cavity magnetic coil is energized to generate heat to melt the frosted part and the method of adjusting the rotational torque of the cover motor when the refrigerator cover squeezes and crushes the frosted part are used as defrosting methods.

[0119] Specifically, if frost exists or there is a possibility of frost; according to the frost state and frost risk index, the power supply of the cavity magnetic coil is dynamically adjusted to generate an appropriate amount of heat to ensure that the frosted part can be melted without affecting the normal refrigeration function of the refrigerator; a reasonable power-on time is set to ensure that the heating will automatically stop after the frost is completely melted to avoid excessive energy consumption.

[0120] If frost exists, the rotation torque of the cover motor is adjusted in real time according to the frosting state and the opening angle, and the cover is controlled to squeeze and crush the frosted part. According to the heating state of the magnetic ring, the start time of the cover motor and the operation time are determined to ensure the efficiency of the defrosting process.

[0121] The above two methods can be used as complete defrosting methods.

[0122] Through the method provided by this embodiment, compared with the traditional timed defrosting method, this method dynamically adjusts the defrosting process according to real-time data, which can eliminate frosting more quickly and effectively, reduce unnecessary heating time, and save energy. By combining the data of temperature, humidity, opening angle and frosting state, more accurate defrosting control can be achieved, avoiding excessive or insufficient defrosting operations, thereby extending the service life of the refrigerator. Dynamically adjusting the power of the cavity magnetic ring and the torque of the cover motor avoids energy waste in the traditional defrosting process and achieves the optimization of energy consumption. By optimizing the defrosting process, the mechanical stress and thermal stress of the internal components of the refrigerator are reduced, and the service life of the equipment is significantly extended. The system can monitor and automatically adjust the defrosting process in real time, reduce the user's maintenance requirements, and improve the user experience. Through the adaptive adjustment algorithm, the system can adapt to different frosting states and improve the flexibility and stability of defrosting.

[0123] In some embodiments, according to the frosting state, the real-time power of the magnetic coil of the cavity is controlled and calculated according to the following formula (4):

[0124] (4);

[0125] in, is the real-time power of the cavity magnetic coil; is the density of ice; is the contact area between the refrigerator cover and the refrigerator cavity; is the relationship coefficient between the opening angle and thickness of the refrigerator cover; is the opening angle of the refrigerator cover; is the specific heat capacity of ice; is the temperature difference between the current temperature and 0°C; is the latent heat of melting of ice; It is the stable operating power of the magnetic coil in the cavity when the refrigerator cover is closed.

[0126] The latent heat of melting of ice can be the energy required per unit mass during the melting process.

[0127] Specifically, the goal of the frost process is to melt ice into water, so sufficient heat is needed To overcome the energy required for the temperature rise and phase change of the ice. This involves two heat contributions: The amount of heat required to raise the temperature of ice from its current temperature to 0°C. , contact area ,coefficient and angle Determines the total volume of ice, which in turn affects the total amount of heat required to raise the temperature; It represents the latent heat required for ice to change from solid state to liquid water at 0°C.

[0128] Through the method provided in this embodiment, the formula comprehensively considers the physical properties of ice: density, specific heat capacity, latent heat and actual temperature, opening angle, and can dynamically adjust the power in real time according to the frosting state. By introducing the basic power, it ensures that when a large amount of melting heat is not required, such as in the case of slight frost or no frost, the power consumption is kept at a low level, which plays a snap-fitting magnetic attraction effect, avoids the situation of loose snapping, and effectively saves energy. According to the heat demand calculated based on the thickness of the ice, temperature changes and melting latent heat, it can provide enough heat to quickly melt the frost while avoiding energy waste due to overheating or prolonged heating. Consider the relationship coefficient between the opening angle and thickness of the refrigerator cover and the opening angle of the refrigerator cover , so that the system can automatically adapt to different frosting conditions and make corresponding power adjustments to ensure that the defrosting process is both efficient and safe.

[0129] like Figure 3-Figure 5 As shown, the air-cooled vehicle refrigerator of this embodiment includes: a refrigerator cover 1, a refrigerator cavity 2, a cover motor 3, a refrigeration unit, a cover magnetic ring 4, a cavity magnetic ring 5 and an air-cooled heat dissipation unit.

[0130] The refrigerator cover 1 is hinged to the refrigerator cavity 2; a cover motor 3 for controlling the opening and closing of the refrigerator cover 1 is installed on the refrigerator cavity 2; the refrigerator cavity is divided into a storage cavity and an accessory installation cavity; a refrigeration unit for cooling the storage cavity 2 is arranged in the accessory installation cavity; an air-cooled heat dissipation unit is installed on the refrigeration unit; a cover magnetic ring 4 is arranged on the side of the refrigerator cover 1 close to the refrigerator cavity 2; a cavity magnetic ring 5 is arranged on the side of the refrigerator cavity close to the refrigerator cover; the cavity magnetic ring 5 is magnetically attracted to the cover magnetic ring 4 after power is turned on.

[0131] Intelligent opening and closing mechanism: The refrigerator cover can be opened and closed intelligently by the cover motor. The cover motor receives signals from the control system and performs corresponding opening and closing actions according to the frosting state. In the closed state, the cover magnetic ring and the cavity magnetic ring are energized to generate magnetic attraction, which enhances the sealing between the refrigerator cover and the cavity, preventing cold air leakage and external moisture from entering.

[0132] Defrosting control mechanism: When frost or the possibility of frost is detected, the control system will calculate the real-time defrosting power required based on data such as the opening angle, temperature and humidity. If defrosting is required, the real-time power of the cavity magnetic ring will be adjusted to generate enough heat to melt the frosted part while maintaining the magnetic attraction of the cover magnetic ring and the cavity magnetic ring. If it is necessary to further remove thick frost, the control system can also adjust the torque of the cover motor so that the refrigerator cover can appropriately squeeze and crush the frosted part.

[0133] Refrigeration and heat dissipation coordination: The refrigeration unit fits the storage cavity through the accessory installation cavity to ensure the lowering of the internal temperature of the refrigerator. At the same time, the air-cooled heat dissipation unit helps to discharge the heat generated by the refrigeration unit to maintain the efficient operation of the system.

[0134] Through the method provided in this embodiment, the magnetic design ensures the close connection between the refrigerator cover and the cavity, effectively prevents the leakage of cold air and the entry of external moisture, enhances the sealing performance between the refrigerator cover and the cavity, improves the heat preservation effect of the refrigerator, and reduces energy consumption. Combined with the real-time monitoring of temperature, humidity and frosting status, the power of the magnetic coil and the torque of the cover motor can be dynamically adjusted to achieve efficient automatic intelligent frost and reduce the maintenance burden of users.

[0135] In some embodiments, a heat dissipation pipe is laid on the side of the cavity magnetic ring 5 away from the cover plate magnetic ring 4; the air-cooling heat dissipation unit dissipates heat from the cavity magnetic ring 5 after power is supplied through the heat dissipation pipe.

[0136] During the operation of the refrigerator, the magnetic coil of the cavity will generate heat due to the power supply. If the heat is not dissipated in time, it may cause the magnetic coil to overheat, affecting its performance, and may even damage the magnetic coil or affect the overall operation of the refrigerator.

[0137] Function of heat dissipation pipe fittings: The heat dissipation pipe fittings are laid on the side of the cavity magnetic circle away from the cover magnetic circle, directly contacting the cavity magnetic circle, and transferring the heat generated by the magnetic circle through conduction.

[0138] These heat dissipation pipes are usually made of metal materials with excellent thermal conductivity, such as copper or aluminum, which can quickly conduct the heat of the magnetic coil.

[0139] Function of air-cooled heat dissipation unit: The air-cooled heat dissipation unit runs cooling air through the heat dissipation pipes, taking away the heat absorbed by the heat dissipation pipes, thereby reducing the temperature of the cavity magnetic circle. The fan of the heat dissipation unit will dynamically adjust the wind speed according to the temperature of the cavity magnetic circle to ensure the heat dissipation effect while reducing unnecessary energy consumption.

[0140] Overall heat dissipation process: When the magnetic coil of the cavity is powered on, it starts to heat up, and the heat is quickly transferred to its outer surface through the heat dissipation pipe. The air cooling unit starts, and the air flowing through the surface of the pipe takes away the heat, keeping the temperature of the magnetic coil within a safe range to avoid overheating.

[0141] Through the method provided in this embodiment, the coordinated use of the heat dissipation pipe and the air-cooled heat dissipation unit can effectively control the temperature of the cavity magnetic coil and prevent failures or performance degradation caused by overheating. Through timely heat dissipation, the operating temperature of the cavity magnetic coil is effectively controlled, reducing material aging and performance degradation caused by high temperature, thereby extending the service life of the magnetic coil. The design of the heat dissipation system ensures the temperature stability of the magnetic coil during long-term operation, thereby improving the operating reliability of the entire refrigerator system and reducing the failure rate. The heat dissipation system takes energy efficiency into consideration in its design. Through the intelligent adjustment function of the air-cooled heat dissipation unit, the heat dissipation capacity is increased only when needed, avoiding unnecessary energy waste and improving the overall energy efficiency of the refrigerator.

[0142] In some embodiments, the opening of the refrigerator cavity 2 is designed to be inclined inwardly so that water generated by defrosting can flow into the inclined surface of the storage cavity.

[0143] The opening of the refrigerator cavity is designed as an inward-inclined slope, which means that any water droplets that melt during the defrosting process will naturally flow down along the sloped surface instead of spreading to the outside of the refrigerator or accumulating at the edge of the cavity. During the defrosting process, the frosted part inside the refrigerator will melt and form water droplets as the temperature rises. These water droplets flow smoothly into the storage cavity under the guidance of the inner inclined slope. The water will eventually flow to the drainage hole or collection tank at the bottom of the refrigerator, and will be smoothly discharged to the outside of the refrigerator through the drainage system to avoid water accumulation inside.

[0144] Through the method provided by this embodiment, the inner tilt design ensures that the defrost water is immediately guided to the storage cavity when it is formed, thereby avoiding water accumulation at the edge or opening of the cavity and preventing overflow. Since the water flow can smoothly flow to the storage cavity and be discharged, the probability of residual water inside the refrigerator is reduced, thereby reducing the possibility of bacterial growth and odor generation, and keeping the interior of the refrigerator clean. Users do not need to worry about defrost water overflowing or accumulating water in unnecessary places, which reduces the trouble of cleaning the refrigerator and improves the convenience of use and the overall experience.

[0145] The air-cooled vehicle refrigerator of this embodiment can be used to execute the method of any of the above embodiments, and its implementation principle and technical effect are similar, which will not be repeated here.

Claims

1. A defrosting control method for an air-cooled vehicle refrigerator, characterized in that: The invention is applied to an air-cooled vehicle refrigerator, the air-cooled vehicle refrigerator comprising: a refrigerator cover, a refrigerator cavity, a cover motor, a refrigeration unit, a cover magnetic ring, a cavity magnetic ring and an air-cooled heat dissipation unit; the refrigerator cover is hinged to the refrigerator cavity; the refrigerator cavity is provided with the cover motor for controlling the opening and closing of the refrigerator cover; the refrigerator cavity is divided into a storage cavity and an accessory installation cavity; the accessory installation cavity is provided with a refrigeration unit for cooling in close contact with the storage cavity; the refrigeration unit is provided with an air-cooled heat dissipation unit; a cover magnetic ring is provided on one side of the refrigerator cover close to the refrigerator cavity; a cavity magnetic ring is provided on one side of the refrigerator cavity close to the refrigerator cover; the cavity magnetic ring is magnetically attracted to the cover magnetic ring after power is turned on; the air-cooled vehicle refrigerator also comprises: a plurality of built-in temperature and humidity sensors; the method comprises: The temperature and humidity inside the refrigerator and the temperature and humidity at the opening of the refrigerator cavity are monitored in real time by a plurality of built-in temperature and humidity sensors of the air-cooled vehicle refrigerator to obtain internal temperature data, internal humidity data, opening temperature data and opening humidity data of the refrigerator; Acquire the closing stop state of the cover motor and determine the opening angle of the refrigerator cover; Determining a frosting state at the opening of the refrigerator cavity according to the internal temperature data, the internal humidity data, the opening temperature data, the opening humidity data, and the opening angle; If the judgment result is frosting, a defrosting method for controlling the power of the cavity magnetic coil and a control method for controlling the torque of the cover motor are formulated according to the temperature data at the opening, the humidity data at the opening, the opening angle and the frosting state.

2. The method according to claim 1, characterized in that A heat dissipation pipe is laid on the side of the cavity magnetic ring away from the cover plate magnetic ring; the air-cooling heat dissipation unit dissipates heat from the cavity magnetic ring after power is supplied through the heat dissipation pipe.

3. The method according to claim 2, characterized in that The opening of the refrigerator cavity is designed to be inclined inwardly so that water generated by defrosting can flow into the inclined surface of the storage cavity.

4. The method according to claim 1, characterized in that: The step of judging the frosting state at the opening of the refrigerator cavity according to the internal temperature data, the internal humidity data, the opening temperature data, the opening humidity data and the opening angle includes: Analyze the internal temperature data and the internal humidity data to determine the temperature and humidity environment inside the refrigerator; Analyze the temperature data at the opening and the humidity data at the opening to determine the temperature and humidity environment at the opening of the refrigerator; Compare the temperature and humidity environment inside the refrigerator with the temperature and humidity environment at the refrigerator opening to obtain the temperature and humidity difference at the refrigerator opening; Determining whether potential conditions for frosting are met according to the temperature and humidity difference; If satisfied, the load torque of the cover motor is obtained; Determining the amount of frost at the opening according to the opening angle and the load torque; The frosting state at the opening of the refrigerator cavity is determined according to the potential conditions for frosting and the amount of frosting at the opening.

5. The method according to claim 4, characterized in that The amount of frost at the opening is determined based on the opening angle and the load torque and is calculated according to the following formula: ； in, is the amount of frosting; is the influence coefficient of refrigerator structure on frosting thickness; is the opening angle of the refrigerator cover; To carry torque; The effective radius between the refrigerator cover and the hinge point; The temperature difference between the inside of the refrigerator and the refrigerator opening; It is the physical constant for correcting the temperature difference to the amount of frost; Frost thickness as a function of time.

6. The method according to claim 4, characterized in that The step of judging the frosting state at the opening of the refrigerator cavity according to the potential frosting condition and the amount of frosting at the opening includes: If the amount of frost at the opening is greater than a preset thickness threshold, the frosting state is determined as frost existing at the opening of the refrigerator cavity; If the amount of frost at the opening is less than or equal to the preset thickness threshold, then judging whether the temperature and humidity difference in the current environment meets the frost condition according to the potential frost condition; If the frosting condition is met, the frosting state is judged as the possibility of frosting at the opening of the refrigerator cavity; If the frosting condition is not met, the frosting state is judged as the absence of frost at the opening of the refrigerator cavity.

7. The method according to claim 6, characterized in that The determining, based on the potential frosting condition, whether the temperature and humidity difference in the current environment meets the frosting condition includes: According to the internal temperature data, the opening temperature data, and the refrigerator opening humidity data, the frost risk index at the refrigerator opening is determined and calculated according to the following formula: ； in, is the frost risk index; is the internal temperature data; is the temperature data at the opening; It is the humidity data at the refrigerator opening; is the weight coefficient of the refrigerator temperature difference affecting frosting; is the weight coefficient of the effect of humidity at the refrigerator opening on frost formation; If the frost risk index is greater than a preset risk index, it is determined that the temperature and humidity difference in the current environment meets the frost conditions.

8. The method according to claim 4, characterized in that The defrosting method for controlling the power of the cavity magnetic coil and the control method for controlling the torque of the cover motor are formulated according to the temperature data at the opening, the humidity data at the opening, the opening angle and the frosting state, including: If the frosting state is judged as the presence of frost at the opening of the refrigerator cavity or the possibility of frost at the opening of the refrigerator cavity, then according to the judgment result, the real-time power of the cavity magnetic coil is controlled to energize the cavity magnetic coil to generate heat to melt the frosted part; If the frosting state is judged as the presence of frost at the opening of the refrigerator cavity, the rotation torque of the cover motor is controlled in real time according to the frosting state and the opening angle, so as to control the refrigerator cover to squeeze and crush the frosted part; the real-time power of the cavity magnetic coil is controlled to energize the cavity magnetic coil to generate heat to melt the frosted part; The defrosting method includes controlling the power of the cavity magnetic coil when the cavity magnetic coil is energized to generate heat to melt the frosted part, and adjusting the rotational torque of the cover motor when the refrigerator cover squeezes and crushes the frosted part.

9. The method according to claim 8, characterized in that According to the frosting state, the real-time power of the cavity magnetic ring is controlled and calculated according to the following formula: ； in, is the real-time power of the cavity magnetic coil; is the density of ice; is the contact area between the refrigerator cover and the refrigerator cavity; is the relationship coefficient between the opening angle and thickness of the refrigerator cover; is the opening angle of the refrigerator cover; is the specific heat capacity of ice; is the temperature difference between the current temperature and 0°C; is the latent heat of melting of ice; It is the stable operating power of the magnetic coil in the cavity when the refrigerator cover is closed.

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