An adaptive control method and device for a vehicle refrigerator and a vehicle

Abstract

This application provides an adaptive control method, device, and vehicle for a vehicle-mounted refrigerator to address the technical problem that conventional vehicle-mounted refrigerators use fixed speed control for the compressor and cooling fan, which fails to adapt to individual vehicle differences, dynamic changes in actual operating conditions, and the shifting of user perception needs across various scenarios. The method achieves comprehensive dynamic optimization of cooling performance and vibration perception throughout the entire lifecycle and all usage scenarios. The adaptive control method for the vehicle-mounted refrigerator includes: after the intelligent function of the refrigerator is activated, driving the compressor and cooling fan within a pre-calibrated initial speed range, and simultaneously collecting real-time vibration data of the refrigerator; when the real-time vibration data indicates that the refrigerator vibration exceeds a preset vibration threshold range, dynamically adjusting the operating speed combination of the compressor and cooling fan based on the current operating status information of the vehicle, thereby achieving comprehensive optimization of cooling performance and vibration perception.

Description

Technical Field

[0001] This application relates to the field of vehicle refrigerator control, specifically to an adaptive control method, device, and vehicle for a vehicle refrigerator. Background Technology

[0002] For conventional vehicle refrigerator compressors, one way to optimize compressor vibration during refrigeration operation is to, after the vehicle is stable and the refrigerator is empty, scan the compressor and fan speeds within their operating range to find the combination that minimizes vibration. Then, the compressor and fan operate according to this combination.

[0003] While this method solves the vibration problem during refrigeration operation when the vehicle is static and the refrigerator is empty, the vibration caused by the operation of the refrigerator compressor and fan is not ideal due to the differences between various parts of different vehicles and their matching errors. At the same time, when the vehicle is in motion and there are items inside the refrigerator, the actual vibration caused by the refrigerator compressor speed and fan speed locked by this method is also not ideal.

[0004] As is well known, the higher the compressor speed of a car refrigerator, the stronger its cooling capacity. Although the combination of compressor and fan speeds locked by the above method ensures minimal vibration, in actual vehicle use, due to changes in the usage environment, such as vehicle speed, air conditioning operation, and music playback, users' awareness of car refrigerator vibration is somewhat weakened. In this case, if the speed combination that minimizes vibration is not the high compressor speed, the cooling performance of the car refrigerator will not be fully utilized, resulting in a certain waste of resources. Summary of the Invention

[0005] This application provides an adaptive control method, device, and vehicle for a vehicle-mounted refrigerator to solve the technical problem that the speed control of the compressor and cooling fan in conventional vehicle-mounted refrigerators is fixed, which makes it unable to adapt to individual differences in vehicles, dynamic changes in actual operating conditions, and the scenario-based migration of user perception needs. It achieves comprehensive dynamic optimization of cooling performance and vibration perception throughout the entire life cycle and all usage scenarios.

[0006] The technical solution of this application is as follows:

[0007] In a first aspect, this application provides an adaptive control method for an in-vehicle refrigerator, comprising:

[0008] After the intelligent function of the vehicle refrigerator is activated, the compressor and cooling fan of the vehicle refrigerator are driven to work within a pre-calibrated initial speed range, and the real-time vibration data of the vehicle refrigerator is collected simultaneously.

[0009] When the real-time vibration data indicates that the vibration of the vehicle refrigerator exceeds the preset vibration threshold range, the operating speed combination of the compressor and cooling fan of the vehicle refrigerator is dynamically adjusted in combination with the current operating status information of the whole vehicle, so as to achieve comprehensive optimization of cooling performance and operating vibration perception.

[0010] The current operating status information includes at least one of the following: vehicle speed, air conditioning fan speed setting, and entertainment system volume.

[0011] The pre-calibrated initial speed range is a stored, known, and fixed speed parameter, not a random or default speed. This initial speed range serves as the initial operating state for each smart function activation of the vehicle refrigerator, ensuring that the refrigerator starts operating from a defined and consistent speed combination each time it is turned on, eliminating speed uncertainty during the startup phase. Using a pre-stored and verified initial speed range as the default starting point avoids the refrigerator starting from zero and blindly experimenting with arbitrary speeds each time it is turned on. When the real-time vibration data indicates that the refrigerator's vibration exceeds a preset vibration threshold range, it indicates that the refrigerator is in an unexpected state of increased vibration under the current operating conditions. By dynamically adjusting the operating speed combination of the compressor and cooling fan, the system actively seeks a vibration-controlled operating point, preventing prolonged vibration or further deterioration, and ensuring the refrigerator's stable operation. For normal startup scenarios without changes in operating conditions, the refrigerator can directly enter a stable operating state without triggering a complete adaptive adjustment process, reducing the frequency of compressor and fan speed changes.

[0012] Furthermore, vehicle speed, air conditioning fan speed setting, and entertainment system volume reflect the degree to which the current operating environment masks the user's ability to perceive vibration. In environments with high-speed driving, high-volume air conditioning, and / or high-volume music, the resulting environmental noise can significantly raise the user's perception threshold for in-car refrigerator vibration. By combining real-time data on vehicle speed, air conditioning fan speed setting, and entertainment system volume to adjust and control the operating speed of the compressor and cooling fan, instead of rigidly adhering to statically calibrated minimum vibration standards, the compressor speed can be excessively suppressed in scenarios where the user would not perceive it, thus avoiding impacting the in-car refrigerator's cooling effect. In other words, without compromising the user's subjective experience, the idle cooling performance caused by a rigid pursuit of quiet operation can be eliminated.

[0013] Furthermore, the dynamic adjustment of compressor and cooling fan speeds is not done indefinitely, but rather with vibration feedback always serving as a boundary constraint. The process seeks to optimize the balance between vibration compliance and enhanced cooling in real time, ensuring no continuous or significant abnormal vibrations occur under any operating condition, while simultaneously approaching the performance limits allowed by the current environment as closely as possible. This achieves comprehensive optimization of both aspects rather than compromising on a single metric.

[0014] In some possible embodiments, the smart function activation condition of the vehicle refrigerator is: the tilt angle of the vehicle refrigerator's compressor is less than a first preset tilt angle; or

[0015] The duration of the compressor tilt angle of the vehicle refrigerator between the first preset tilt angle and the second preset tilt angle is less than the preset duration;

[0016] The second preset tilt angle is greater than the first preset tilt angle.

[0017] When a vehicle is parked on a slope, on a sloping road surface, or in a non-level position for an extended period, an excessively large compressor tilt angle will cause refrigerant oil to stagnate at the bottom of the casing and fail to return to the pump body. This results in dry friction of moving parts due to insufficient lubrication, leading to cylinder seizure, accelerated wear, and even premature failure. By introducing the compressor tilt angle and its duration as criteria for activating the refrigeration function, the risk of the compressor starting under load due to lubrication failure is prevented at the source, thus avoiding mechanical damage to the compressor.

[0018] By introducing duration as one of the judgment conditions, moderate tilting is allowed to operate normally within a certain time window. This can take into account short-term dynamic attitude changes such as slopes and turns during normal vehicle driving. It will not sacrifice the availability of the vehicle refrigerator due to excessive sensitivity to instantaneous tilting, and will reliably implement protection when continuous tilting exceeds the time limit, thus achieving a reasonable balance between compressor operation safety and user cooling needs.

[0019] In some possible embodiments, when the real-time vibration data indicates that the vibration of the vehicle refrigerator exceeds a preset vibration threshold, the steps of dynamically adjusting the operating speed combination of the vehicle refrigerator's compressor and cooling fan, in conjunction with the current operating status information of the entire vehicle, to achieve comprehensive optimization of cooling performance and operational vibration sensing, include:

[0020] Within the allowable operating speed range of the compressor and the cooling fan, various different speed combinations were tested sequentially according to a preset speed step size, and real-time vibration data under each speed combination was recorded.

[0021] Among all the tested speed combinations, the speed combination that has the highest compressor speed and whose real-time vibration data is within the preset vibration threshold range is selected as the reference speed combination.

[0022] Based on at least one of the vehicle speed, air conditioning fan speed setting, and entertainment system volume, determine an adjustment increment within a speed range;

[0023] The optimal operating speed combination is obtained by superimposing the speed range adjustment increment on the reference speed combination.

[0024] When the vehicle refrigerator experiences excessive vibration, a comprehensive test is initiated. From all speed combinations that meet the vibration threshold requirements, the highest compressor speed is selected as the baseline speed combination. This ensures that the vehicle refrigerator returns to the vibration safety zone while simultaneously reaching its cooling performance peak within the constraint boundary. Based on this, vehicle status information such as vehicle speed, air conditioning fan speed, and entertainment system volume—indicating the degree of environmental noise masking—is used to generate a positive speed range adjustment increment, which is then superimposed on the baseline speed combination. This allows the vehicle refrigerator to proactively exceed the original static vibration threshold in scenarios where user vibration perception sensitivity decreases. This achieves a further increase in compressor speed at the cost of minimal, controllable vibration, thereby fully releasing its cooling potential within the environmental noise window.

[0025] In some possible embodiments, the method further includes:

[0026] After adjusting the operating speed combination of the compressor and cooling fan of the vehicle refrigerator, real-time vibration data of the compressor and cooling fan under the optimal operating speed combination were collected.

[0027] Based on the real-time vibration data, the preset vibration threshold range is redefined.

[0028] Once the vehicle-mounted refrigerator triggers adjustments due to excessive vibration and successfully finds a better combination of operating speeds, the vibration level under this combination represents the achievable and acceptable true vibration performance under the current operating conditions. The threshold range is then redefined based on this measured vibration data, ensuring a strong correlation between the vibration judgment standard and actual operating conditions. This avoids repeatedly and meaninglessly triggering adjustments under the same conditions by continuing to use the initial benchmark. This update only takes effect within the current cooling cycle, giving the vehicle-mounted refrigerator the adaptive capability to operate continuously and stably in the same scenario, while also isolating the system benchmark from permanent interference from atypical operating conditions through a periodic reset mechanism.

[0029] In some possible embodiments, the pre-calibration process of the initial speed range is as follows: under the baseline environment where the vehicle is static, the on-board refrigerator is unloaded, and the air conditioning and entertainment systems are not working, the compressor and the cooling fan are controlled to traverse and test a variety of different speed combinations within their respective allowable operating speed ranges according to a preset step size, and the real-time vibration data corresponding to each speed combination is recorded.

[0030] From all tested speed combinations, the speed combination that minimizes the real-time vibration data is selected as the initial optimal speed combination; if there are multiple speed combinations that minimize the real-time vibration data, the combination with the highest compressor speed is selected as the initial optimal speed combination.

[0031] The initial optimal speed combination is used as the initial operating speed combination for the first cooling operation of the vehicle refrigerator;

[0032] Based on the real-time vibration data collected under the initial optimal rotational speed combination, the preset vibration threshold range is set.

[0033] The calibration process is performed under baseline conditions where the vehicle is static, the onboard refrigerator is unloaded, and the air conditioning and entertainment systems are not operating. This eliminates interference from vehicle vibration and environmental noise, ensuring that the measured vibration data is uniquely determined by the combination of compressor and cooling fan speeds. Through comprehensive testing across the entire operating speed range, a complete speed-vibration mapping relationship is established. The speed combination with the smallest absolute vibration value is selected as the initial optimal speed combination, ensuring that each vehicle, from the factory outset, obtains the most stable operating baseline uniquely matched to its assembly tolerances, installation position, and structural characteristics. When multiple vibration minima exist, the combination with the higher compressor speed is prioritized to obtain stronger initial cooling capacity without increasing vibration costs, avoiding sacrificing cooling performance by rigidly pursuing a unique vibration minimum. A preset vibration threshold range is set based on the measured vibration data under this optimal combination. This ensures that the vibration exceedance judgment standard is directly derived from the vehicle's truly achievable optimal vibration level, rather than a uniform calibration value detached from individual vehicle differences. This provides a physically meaningful and consistent judgment basis for subsequent adaptive control.

[0034] In some possible embodiments, the step of testing multiple different speed combinations sequentially according to a preset speed step size within the allowable operating speed range of the compressor and the cooling fan includes:

[0035] Within the allowable operating speed range of the compressor, the process is traversed in steps of a first preset speed.

[0036] For each speed value traversed by the compressor, the cooling fan starts from the lowest speed in its allowed operating speed range and traverses independently with a second preset speed step.

[0037] This traversal strategy employs a nested, cyclical two-dimensional scanning method involving the compressor and cooling fan. For each fixed compressor speed, the cooling fan independently traverses the entire fan speed range, starting from its lowest speed with a fixed step size. This generates a three-dimensional mapping matrix covering all possible combinations of compressor speed, fan speed, and vibration values. Compared to independently optimizing the compressor and cooling fan or fixing only one variable for single-dimensional adjustment, this nested traversal method fully preserves the coupled influence of compressor and fan speeds on system vibration. Since the compressor and cooling fan have different excitation frequencies, installation locations, and transmission paths, their vibration responses are not linearly superimposed; the optimal fan speed for one compressor speed may not be applicable to another. Through full combinatorial traversal, the global vibration minimum point can be accurately located, rather than a local optimum.

[0038] In some possible embodiments, the step of determining an adjustment increment within a speed range based on at least one of the vehicle speed, air conditioning fan speed setting, and entertainment system volume includes:

[0039] Based on the preset correspondence between the vehicle speed and the first preset speed increment combination, the first preset speed increment combination corresponding to the vehicle speed is determined; when the vehicle speed is 0, the first preset speed increment combination is 0;

[0040] Based on the preset correspondence between the air conditioning fan speed setting and the second preset speed increment combination, the second preset speed increment combination corresponding to the air conditioning fan speed setting is determined; when the air conditioning fan speed setting is 0, the second preset speed increment combination is 0;

[0041] Based on the preset correspondence between the entertainment system volume and the third preset speed increment combination, a third preset speed increment combination corresponding to the entertainment system volume is determined; when the entertainment system volume is 0, the third preset speed increment combination is 0;

[0042] The compressor speed increment and the cooling fan speed increment in the third preset speed increment combination are respectively superimposed to obtain the speed range adjustment increment including the total compressor speed increment and the total cooling fan speed increment.

[0043] Vehicle speed, air conditioning fan speed, and entertainment system volume respectively characterize the contribution of road noise, tire noise, air conditioning vent noise, and music playback to the in-vehicle acoustic environment. All three are positively correlated with the masking effect of the user's vibration perception threshold. Through a preset correspondence, each vehicle speed, air conditioning fan speed, and volume level corresponds to a specific set of RPM increments; the higher the level, the larger the increment. When multiple levels exist simultaneously, the increment components are independently superimposed to form a synergistic gain. This superposition mechanism conforms to the cumulative characteristics of real-world in-vehicle noise—when multiple noise sources coexist, the user's sensitivity to the vibration of the in-vehicle refrigerator further decreases, and the system gains greater performance release potential. When the vehicle speed is 0, the air conditioning is off, and the volume is 0, the corresponding increments are all 0, ensuring that the system strictly adheres to the original vibration threshold in static, quiet environments, without sacrificing quietness for cooling performance in any way.

[0044] Secondly, this application also provides an adaptive control device for a vehicle-mounted refrigerator, the device comprising:

[0045] The data acquisition module is used to drive the compressor and cooling fan of the vehicle refrigerator at a pre-calibrated initial speed range after the intelligent function of the vehicle refrigerator is activated, and to collect the real-time vibration data of the vehicle refrigerator at the same time.

[0046] The speed adjustment module is used to dynamically adjust the operating speed combination of the compressor and cooling fan of the vehicle refrigerator when the real-time vibration data indicates that the vibration of the vehicle refrigerator exceeds the preset vibration threshold range, in combination with the current operating status information of the whole vehicle, so as to achieve comprehensive optimization of cooling performance and operating vibration perception.

[0047] The current operating status information includes at least one of the following: vehicle speed, air conditioning fan speed setting, and entertainment system volume.

[0048] In some possible embodiments, the speed adjustment module includes:

[0049] The speed adjustment unit is used to test a variety of different speed combinations in sequence according to a preset speed step size within the allowable operating speed range of the compressor and the cooling fan, and record the real-time vibration data under each speed combination.

[0050] The reference speed combination selection unit is used to select the speed combination that has the highest compressor speed among all tested speed combinations, where the real-time vibration data is within the preset vibration threshold range;

[0051] The speed increment determination unit is used to determine a speed range adjustment increment based on at least one of the vehicle speed, air conditioning fan speed setting, and entertainment system volume.

[0052] The optimal operating speed combination determination unit is used to add the speed range adjustment increment to the reference speed combination to obtain the adjusted optimal operating speed combination.

[0053] Thirdly, this application also provides a vehicle including the aforementioned adaptive control device for an in-vehicle refrigerator. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the vibration sensor arrangement for a vehicle-mounted refrigerator;

[0055] Figure 2 This is a flowchart of the vibration matching process for initializing the vehicle refrigerator after it rolls off the production line at the vehicle factory.

[0056] Figure 3 This is a table illustrating the combination of initializing compressor and fan speeds;

[0057] Figure 4 This is a flowchart of the tilt angle detection process before the vehicle refrigerator's cooling function is activated after the vehicle leaves the factory.

[0058] Figure 5 A flowchart of the adaptive control method for a vehicle-mounted refrigerator;

[0059] Figure 6 This is a flowchart illustrating step S102. Detailed Implementation

[0060] This application provides a vehicle that includes an onboard refrigerator.

[0061] Among them, reference Figure 1 The vehicle refrigerator integrates a vibration sensor 1. The vibration sensor 1 can be selected based on its characteristics and rationally positioned within the vehicle to match the actual vehicle refrigerator design; it can even be integrated into the vehicle refrigerator's controller PCB. The principle of the vibration sensor 1 is a common technical field within the industry and will not be described in detail here.

[0062] The signal fed back by vibration sensor 1 is collected by the vehicle refrigerator's own controller. The working principle, signal output, and processing of vibration sensor 1 are common technical fields in the industry and will not be described in detail here. Vehicle status-related signals, such as vehicle attitude, vehicle speed, air conditioning status and fan speed, and music playback status and speed, can interact with the vehicle refrigerator's own controller via the CAN bus. Bus technology is also a common technical field in the vehicle industry and will not be described in detail here.

[0063] like Figure 2 The in-vehicle refrigerator undergoes initialization upon vehicle assembly. This involves locking the optimal compressor and fan speed combination for each vehicle in a static state, with the refrigerator empty and the vehicle's air conditioning and music off. This speed combination serves as the initial speed for the compressor and fan when the refrigerator is used for cooling purposes. The specific steps are as follows:

[0064] 1. The vehicle has completed the assembly and inspection of relevant parts. During the off-line process, the vehicle is static, the on-board refrigerator is empty, and the vehicle's air conditioning and music are not turned on. Input the on-board refrigerator initialization command.

[0065] 2. After receiving the initialization command, the vehicle refrigerator enters the initialization program. The compressor runs at a certain gradient within its operating speed range for a specific period of time; simultaneously, at each speed range traversed by the compressor, the fan speed also traverses at a certain gradient for a specific period of time. To save time and ensure the basic cooling performance of the vehicle refrigerator, each compressor speed corresponds to a minimum fan speed. Adjusting the compressor speed will correspondingly adjust the minimum fan speed, the specific values ​​of which are fixed in the program based on prior development. For example, if the compressor operates within the range of 3000rpm to 4500rpm, it will start at 3000rpm and increase by 100rpm for 3 seconds each time; at each traversed speed range, the fan will also increase by 100rpm for 3 seconds each time. Figure 3 .

[0066] 3. While the compressor and fan speeds are running in a cyclical manner, the program records the vibration sensor signals at the corresponding speeds to obtain a vibration signal matrix table under different combinations of compressor speeds and fan speeds;

[0067] By comparing the recorded vibration sensor signals at corresponding compressor and fan speeds, and based on the characteristics of the vibration sensors, the combination of speeds with the lowest vibration and its corresponding vibration sensor signal value are identified. For example, at compressor speeds of 3600 rpm and fan speeds of 2700 rpm, the minimum vibration is 0.08 m / s², corresponding to the vibration sensor signal Zmin. If the combination of speeds with the lowest vibration is not unique, the combination with the higher compressor speed is selected to improve the compressor's cooling power. For instance, if the minimum vibration is 0.08 m / s² at both compressor speeds of 3600 rpm and fan speeds of 2700 rpm and compressor speeds of 3000 rpm and fan speeds of 2000 rpm, then the combination with the higher compressor speed of 3600 rpm and fan speed of 2700 rpm is preferred.

[0068] The speed combination from the above steps is set as the initial speed of the compressor and fan. The vibration sensor signal value is used as the median value, and a certain range is automatically set as the set vibration signal threshold, i.e., Zmin±z. For example, if the compressor speed is set to 3600 rpm and the fan speed to 2700 rpm, the vibration signal threshold is automatically set to 0.08 m / s²±0.02 m / s².

[0069] In other words, under the baseline environment where the vehicle is static, the car refrigerator is unloaded, and the air conditioning and entertainment systems are not working, the compressor and cooling fan are controlled to traverse and test various different speed combinations within their respective allowable operating speed ranges according to preset step sizes, and the real-time vibration data corresponding to each speed combination is recorded.

[0070] From all the tested speed combinations, select the speed combination that minimizes the real-time vibration data as the initial optimal speed combination; if there are multiple speed combinations that minimize the real-time vibration data, select the combination with the highest compressor speed as the initial optimal speed combination.

[0071] The initial optimal speed combination is used as the initial operating speed combination for the first cooling operation of the vehicle refrigerator;

[0072] Based on the real-time vibration data collected under the initial optimal speed combination, a preset vibration threshold range is set.

[0073] like Figure 4After the vehicle rolls off the production line and is powered on, the onboard refrigerator acquires the vehicle's attitude and calculates the compressor's tilt angle based on the vehicle's attitude and the compressor's layout. The system determines whether to activate the compressor based on the tilt angle and its duration, thus protecting it from damage. The specific steps are as follows:

[0074] When the vehicle is powered on, the onboard refrigerator acquires the vehicle's attitude and calculates the tilt angle of the refrigerator's compressor. The vehicle attitude is acquired via signals from height sensors on the suspension, which is existing technology and will not be elaborated upon further. The calculation of the compressor tilt angle is based on the relationship between the onboard refrigerator compressor's placement and the overall vehicle attitude, and will also not be elaborated upon further.

[0075] Combination Figure 4 The system determines the tilt angle of the vehicle refrigerator compressor. If the tilt angle of the vehicle refrigerator compressor is less than 20°, when the vehicle refrigerator is turned on for cooling, it will initially operate according to the factory-locked initial speed combination, while monitoring the feedback from the vibration sensor in real time.

[0076] Determine the tilt angle of the vehicle refrigerator compressor. If the vehicle refrigerator compressor is tilted by 20° ≤ angle ≤ 45°, start timing and detect the duration of maintaining this angle.

[0077] If the compressor of the vehicle refrigerator is tilted at an angle of 20° to 45° and the duration of this tilt is less than 30 minutes, when the vehicle refrigerator is turned on for cooling, it will initially operate according to the factory-locked initial speed combination, while monitoring the feedback from the vibration sensor in real time.

[0078] If the vehicle refrigerator compressor is tilted at an angle of 20° to 45° and remains at this angle for ≥30 minutes, the compressor will be prevented from starting when the vehicle refrigerator is turned on for cooling. The user will be prompted that the tilting time is too long and the vehicle needs to be leveled and stationary for 5 minutes before the cooling function can be activated.

[0079] If the vehicle refrigerator compressor is tilted at an angle of 20° to 45°, and the tilt angle subsequently returns to <20°, then the duration of the tilt angle remaining <20° should be measured.

[0080] If the compressor tilt angle returns to <20° and the duration is >5 minutes, when the vehicle refrigerator is turned on for cooling, it will initially operate according to the factory-locked initial speed combination, while monitoring the vibration sensor feedback in real time.

[0081] If the compressor tilt angle returns to <20° and the duration is ≤5min, when the vehicle refrigerator is turned on for cooling, the vehicle refrigerator compressor will be prohibited from starting, and the user will be prompted that the tilt time is too long and the vehicle needs to be leveled and stationary for 5 minutes before the cooling function can be activated.

[0082] In other words, the smart function of the car refrigerator is activated when the compressor tilt angle is less than a first preset tilt angle; or

[0083] The duration of the compressor tilt angle of the vehicle refrigerator between the first preset tilt angle and the second preset tilt angle is less than the preset duration;

[0084] The second preset tilt angle is greater than the first preset tilt angle.

[0085] After the vehicle rolls off the production line, and after determining that the tilt angle of the vehicle refrigerator compressor meets the requirements for cooling startup, when the user uses the vehicle refrigerator's cooling function, the vehicle refrigerator compressor and fan first operate at the initial speed combination and monitor vibration signals in real time. If vehicle movement or items placed inside the vehicle refrigerator affect the vibration excitation feedback, the real-time monitored vibration signal will exceed the initial vibration signal threshold. At this time, the vehicle refrigerator enters speed traversal again, and automatically finds the optimal speed combination by combining the vehicle speed, the air conditioning fan speed setting, and the music playback volume setting to maximize the cooling capacity under vibration requirements.

[0086] In other words, this application provides an adaptive control method for an in-vehicle refrigerator, referring to... Figure 5 ,include:

[0087] S101, after the intelligent function of the vehicle refrigerator is activated, drives the compressor and cooling fan of the vehicle refrigerator to work within a pre-calibrated initial speed range, and simultaneously collects the real-time vibration data of the vehicle refrigerator.

[0088] S102, when the real-time vibration data indicates that the vibration of the vehicle refrigerator exceeds the preset vibration threshold range, the operating speed combination of the compressor and cooling fan of the vehicle refrigerator is dynamically adjusted in combination with the current operating status information of the whole vehicle, so as to achieve comprehensive optimization of cooling performance and operating vibration perception.

[0089] Current operating status information includes at least one of the following: vehicle speed, air conditioning fan speed setting, and entertainment system volume.

[0090] Reference Figure 6 The step S102, in which the real-time vibration data indicates that the vibration of the vehicle refrigerator exceeds a preset vibration threshold, dynamically adjusts the operating speed combination of the compressor and cooling fan of the vehicle refrigerator in conjunction with the current operating status information of the vehicle, so as to achieve comprehensive optimization of cooling performance and operating vibration perception, includes:

[0091] S1021, within the allowable operating speed range of the compressor and the cooling fan, test a variety of different speed combinations in sequence according to a preset speed step size, and record the real-time vibration data under each speed combination;

[0092] S1022, among all the tested speed combinations, select the speed combination whose real-time vibration data is within the preset vibration threshold range and which makes the compressor speed the highest, as the reference speed combination;

[0093] S1023, determine an adjustment increment within a speed range based on at least one of the vehicle speed, air conditioning fan speed setting, and entertainment system volume;

[0094] S1024, the speed range adjustment increment is superimposed on the reference speed combination to obtain the adjusted optimal operating speed combination.

[0095] The step of testing various speed combinations sequentially within the allowable operating speed range of the compressor and the cooling fan, according to a preset speed step size, includes:

[0096] Within the allowable operating speed range of the compressor, the process is traversed in steps of a first preset speed.

[0097] For each speed value traversed by the compressor, the cooling fan starts from the lowest speed in its allowed operating speed range and traverses independently with a second preset speed step.

[0098] In this embodiment of the application, S102 specifically includes:

[0099] Obtain the vehicle speed, generate a rotational speed increment Zv based on the speed range and duration, and save it; different rotational speed increments Zv can be generated based on different speed ranges, for example:

[0100] ①If the vehicle speed is <30km / h and the duration is >20min, then the speed increment Zv1 is generated;

[0101] ②If 30km / h≤vehicle speed≤70km / h and duration>20min, then the speed increment Zv2 is generated;

[0102] ③If 70km / h < vehicle speed and duration > 20min, then the speed increment Zv3 is generated;

[0103] If the vehicle speed does not meet the above conditions, then the corresponding speed increment will not be generated to replace the original speed increment, or no speed increment will be generated.

[0104] Simultaneously, the vehicle's air conditioning on / off status is acquired, and the fan speed setting is obtained after it is turned on. Based on the fan speed setting and duration after the air conditioning is turned on, a speed increment Zf is generated and saved. Different speed increments Zf can be generated based on different fan speed ranges, for example:

[0105] ①If the air conditioner fan speed is less than level 3 and the duration is greater than 20 minutes, the speed increment Zf1 will be generated;

[0106] ②If the air conditioning fan speed is between 3 and 5, and the duration is greater than 20 minutes, the speed increment Zf2 is generated;

[0107] ③ If the air conditioning fan speed is less than 5 and the duration is greater than 20 minutes, the speed increment Zf3 will be generated;

[0108] If the airflow setting does not meet the above conditions after the air conditioner is turned on, the corresponding speed increment will not be generated to replace the original speed increment, or no speed increment will be generated.

[0109] Simultaneously, it acquires the vehicle's music playback status, obtains the volume level after playback, and generates and saves the engine speed increment Zy based on the volume level and duration of the music playback. It can generate different engine speed increments Zy based on different volume levels, for example:

[0110] ①If the music volume is less than level 10 and the duration is greater than 20 minutes, generate the rotation speed increment Zy1;

[0111] ②If the music volume is between 10 and 20, and the duration is greater than 20 minutes, generate the rotational speed increment Zy2;

[0112] ③ If level 20 is less than the music volume and the duration is greater than 20 minutes, generate the speed increment Zy3;

[0113] If the volume level does not meet the above conditions after the music is turned on, then the corresponding speed increment will not be generated to replace the original speed increment, or no speed increment will be generated.

[0114] In other words, the steps for determining the incremental adjustment within a certain RPM range based on at least one of vehicle speed, air conditioning fan speed setting, and entertainment system volume include:

[0115] Based on the preset correspondence between vehicle speed and the first preset speed increment combination, the first preset speed increment combination corresponding to the vehicle speed is determined; when the vehicle speed is 0, the first preset speed increment combination is 0.

[0116] Based on the preset correspondence between the air conditioning fan speed setting and the second preset speed increment combination, the second preset speed increment combination corresponding to the air conditioning fan speed setting is determined; when the air conditioning fan speed setting is 0, the second preset speed increment combination is 0.

[0117] Based on the preset correspondence between the entertainment system volume and the third preset speed increment combination, the third preset speed increment combination corresponding to the entertainment system volume is determined; when the entertainment system volume is 0, the third preset speed increment combination is 0.

[0118] The compressor speed increment and cooling fan speed increment in the first preset speed increment combination are respectively superimposed on the third preset speed increment combination to obtain the speed range adjustment increment including the total compressor speed increment and the total cooling fan speed increment.

[0119] When the signal fed back by the vibration sensor exceeds the threshold range set during initialization (e.g., exceeding Zmin±z), timing begins. If the signal fed back by the vibration sensor changes back to the threshold range set during the time period before the set time length (e.g., 2 minutes) is reached, the timing is reset to zero. Timing restarts when the signal fed back by the vibration sensor exceeds the threshold range set during initialization again.

[0120] If the signal fed back by the monitoring vibration sensor does not exceed the threshold range set during the initialization within the set time period, the current operating state will be maintained.

[0121] If the signal fed back by the vibration sensor exceeds the threshold range set during initialization and continues to exceed it within the set time period, the vehicle refrigerator vibration adaptive adjustment program will be entered.

[0122] The program enters the vehicle refrigerator vibration adaptive adjustment, and the compressor and fan traverse the operating speed range at a certain gradient; at the same time, the program records the vibration sensor signals under the corresponding speed combination.

[0123] By comparing the vibration sensor signals under the corresponding combinations of rotational speeds, the minimum vibration speed and its vibration sensor signal value Zminy can be found.

[0124] Determine if there are saved increments in vehicle speed / RPM, RPM increments for air conditioning fan speed, and RPM increments for music volume levels;

[0125] If it is determined that there is no saved rotation speed increment, then determine whether the rotation speed combination of the vibration minimum Zminy is unique;

[0126] If the rotation speed combination is unique, then operate at this unique rotation speed and set Zminy as the new median vibration threshold value within this vehicle refrigerator cooling operation cycle;

[0127] If the speed combination is not unique, select the combination with the larger compressor speed from the speed combinations with the minimum vibration Zminy value;

[0128] Run the refrigerator at the combination speed with the highest selected compressor speed, and set Zminy as the new median vibration threshold value within this vehicle refrigerator operating cycle.

[0129] If it is determined that there are stored speed increments, then the existing speed increments are added together and stored as: Zminy1 (add as many coefficients as there are).

[0130] Comparing the data recorded in this traversal, the combination with the highest compressor speed in the vibration value range Zminy to Zminy1 is selected for operation, and Zminy1 is set as the new median vibration threshold within this vehicle refrigerator operation cycle.

[0131] During the operation of the vehicle refrigerator, changes in the vehicle body, road conditions, or items inside the refrigerator may cause changes in the signal fed back by the real-time monitoring vibration sensor. This triggers adaptive adjustment, which then runs to find the optimal combination of speeds.

[0132] The above adaptive adjustment only operates within one cooling cycle. If the cooling function is interrupted or the vehicle refrigerator is turned off, the vehicle refrigerator will resume cooling according to the complete process described above.

[0133] Secondly, this application also provides an adaptive control device for a vehicle-mounted refrigerator consistent with the above method, the device comprising:

[0134] The data acquisition module is used to drive the compressor and cooling fan of the vehicle refrigerator at a pre-calibrated initial speed range after the intelligent function of the vehicle refrigerator is activated, and to collect the real-time vibration data of the vehicle refrigerator at the same time.

[0135] The speed adjustment module is used to dynamically adjust the operating speed combination of the compressor and cooling fan of the vehicle refrigerator when the real-time vibration data indicates that the vibration of the vehicle refrigerator exceeds the preset vibration threshold range, in combination with the current operating status information of the whole vehicle, so as to achieve comprehensive optimization of cooling performance and operating vibration perception.

[0136] The current operating status information includes at least one of the following: vehicle speed, air conditioning fan speed setting, and entertainment system volume.

[0137] In some possible embodiments, the speed adjustment module includes:

[0138] The speed adjustment unit is used to test a variety of different speed combinations in sequence according to a preset speed step size within the allowable operating speed range of the compressor and the cooling fan, and record the real-time vibration data under each speed combination.

[0139] The reference speed combination selection unit is used to select the speed combination that has the highest compressor speed among all tested speed combinations, where the real-time vibration data is within the preset vibration threshold range;

[0140] The speed increment determination unit is used to determine a speed range adjustment increment based on at least one of the vehicle speed, air conditioning fan speed setting, and entertainment system volume.

[0141] The optimal operating speed combination determination unit is used to add the speed range adjustment increment to the reference speed combination to obtain the adjusted optimal operating speed combination.

[0142] Thirdly, this application also provides a vehicle including the aforementioned adaptive control device for an in-vehicle refrigerator.

[0143] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims. Those skilled in the art can understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this application still fall within the scope of this application.

Claims

1. An adaptive control method for a vehicle-mounted refrigerator, characterized in that, include: After the intelligent function of the vehicle refrigerator is activated, the compressor and cooling fan of the vehicle refrigerator are driven to work within a pre-calibrated initial speed range, and the real-time vibration data of the vehicle refrigerator is collected simultaneously. When the real-time vibration data indicates that the vibration of the vehicle refrigerator exceeds the preset vibration threshold range, the operating speed combination of the compressor and cooling fan of the vehicle refrigerator is dynamically adjusted in combination with the current operating status information of the whole vehicle, so as to achieve comprehensive optimization of cooling performance and operating vibration perception. The current operating status information includes at least one of the following: vehicle speed, air conditioning fan speed setting, and entertainment system volume.

2. The adaptive control method for a vehicle-mounted refrigerator according to claim 1, characterized in that, The smart function of the car refrigerator is activated when the compressor tilt angle is less than a first preset tilt angle; or The duration of the compressor tilt angle of the vehicle refrigerator between the first preset tilt angle and the second preset tilt angle is less than the preset duration; The second preset tilt angle is greater than the first preset tilt angle.

3. The adaptive control method for a vehicle-mounted refrigerator according to claim 1, characterized in that, When the real-time vibration data indicates that the vibration of the vehicle refrigerator exceeds a preset vibration threshold, the steps of dynamically adjusting the operating speed combination of the vehicle refrigerator's compressor and cooling fan, in conjunction with the current operating status information of the entire vehicle, to achieve comprehensive optimization of cooling performance and operational vibration perception, include: Within the allowable operating speed range of the compressor and the cooling fan, various different speed combinations were tested sequentially according to a preset speed step size, and real-time vibration data under each speed combination was recorded. Among all the tested speed combinations, the speed combination that has the highest compressor speed and whose real-time vibration data is within the preset vibration threshold range is selected as the reference speed combination. Based on at least one of the vehicle speed, air conditioning fan speed setting, and entertainment system volume, determine an adjustment increment within a speed range; The optimal operating speed combination is obtained by superimposing the speed range adjustment increment on the reference speed combination.

4. The adaptive control method for a vehicle-mounted refrigerator according to claim 1 or 3, characterized in that, The method further includes: After adjusting the operating speed combination of the compressor and cooling fan of the vehicle refrigerator, real-time vibration data of the compressor and cooling fan under the optimal operating speed combination were collected. Based on the real-time vibration data, the preset vibration threshold range is redefined.

5. The adaptive control method for a vehicle-mounted refrigerator according to claim 1 or 3, characterized in that, The pre-calibration process for the initial speed range is as follows: Under the baseline environment where the vehicle is static, the onboard refrigerator is unloaded, and the air conditioning and entertainment systems are not working, the compressor and the cooling fan are controlled to traverse and test various different speed combinations within their respective allowable operating speed ranges according to a preset step size, and the real-time vibration data corresponding to each speed combination is recorded. From all tested speed combinations, the speed combination that minimizes the real-time vibration data is selected as the initial optimal speed combination; if there are multiple speed combinations that minimize the real-time vibration data, the combination with the highest compressor speed is selected as the initial optimal speed combination. The initial optimal speed combination is used as the initial operating speed combination for the first cooling operation of the vehicle refrigerator; Based on the real-time vibration data collected under the initial optimal rotational speed combination, the preset vibration threshold range is set.

6. The adaptive control method for a vehicle-mounted refrigerator according to claim 3, characterized in that, Within the allowable operating speed range of the compressor and the cooling fan, the steps of sequentially testing multiple different speed combinations according to a preset speed step size include: Within the allowable operating speed range of the compressor, the process is traversed in steps of a first preset speed. For each speed value traversed by the compressor, the cooling fan starts from the lowest speed in its allowed operating speed range and traverses independently with a second preset speed step.

7. The adaptive control method for a vehicle-mounted refrigerator according to claim 3, characterized in that, The steps for determining the adjustment increment within a speed range based on at least one of the vehicle speed, air conditioning fan speed setting, and entertainment system volume include: Based on the preset correspondence between the vehicle speed and the first preset speed increment combination, the first preset speed increment combination corresponding to the vehicle speed is determined; when the vehicle speed is 0, the first preset speed increment combination is 0; Based on the preset correspondence between the air conditioning fan speed setting and the second preset speed increment combination, the second preset speed increment combination corresponding to the air conditioning fan speed setting is determined; when the air conditioning fan speed setting is 0, the second preset speed increment combination is 0; Based on the preset correspondence between the entertainment system volume and the third preset speed increment combination, a third preset speed increment combination corresponding to the entertainment system volume is determined; when the entertainment system volume is 0, the third preset speed increment combination is 0; The compressor speed increment and the cooling fan speed increment in the third preset speed increment combination are respectively superimposed to obtain the speed range adjustment increment including the total compressor speed increment and the total cooling fan speed increment.

8. An adaptive control device for a vehicle-mounted refrigerator, characterized in that, The device includes: The data acquisition module is used to drive the compressor and cooling fan of the vehicle refrigerator at a pre-calibrated initial speed range after the intelligent function of the vehicle refrigerator is activated, and to collect the real-time vibration data of the vehicle refrigerator at the same time. The speed adjustment module is used to dynamically adjust the operating speed combination of the compressor and cooling fan of the vehicle refrigerator when the real-time vibration data indicates that the vibration of the vehicle refrigerator exceeds the preset vibration threshold range, in combination with the current operating status information of the whole vehicle, so as to achieve comprehensive optimization of cooling performance and operating vibration perception. The current operating status information includes at least one of the following: vehicle speed, air conditioning fan speed setting, and entertainment system volume.

9. The adaptive control device for a vehicle-mounted refrigerator according to claim 8, characterized in that, The speed adjustment module includes: The speed adjustment unit is used to test a variety of different speed combinations in sequence according to a preset speed step size within the allowable operating speed range of the compressor and the cooling fan, and record the real-time vibration data under each speed combination. The reference speed combination selection unit is used to select the speed combination that has the highest compressor speed among all tested speed combinations, where the real-time vibration data is within the preset vibration threshold range; The speed increment determination unit is used to determine a speed range adjustment increment based on at least one of the vehicle speed, air conditioning fan speed setting, and entertainment system volume. The optimal operating speed combination determination unit is used to add the speed range adjustment increment to the reference speed combination to obtain the adjusted optimal operating speed combination.

10. A vehicle, characterized in that, The adaptive control device for the vehicle refrigerator as described in any one of claims 8-9.

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