Refrigerating system based on vehicle-mounted air conditioner and control method

Abstract

The invention provides a refrigerating system based on a vehicle-mounted air conditioner and a control method, and belongs to the technical field of refrigeration. The control method specifically comprises the steps that an indoor condenser and an outdoor evaporator of a refrigerating system connected with a compressor driven by an engine and an indoor condenser and an outdoor evaporator of a refrigerating system connected with an electrically-driven compressor are combined into a whole; mutually isolated pipelines are arranged between the indoor condenser and the outdoor evaporator, when the outside air temperature is higher than the preset temperature or the thermal load of the cab is larger than the preset thermal load, the engine drives the compressor to operate, and when the temperature of the cab is reduced to the specified temperature, the engine is disconnected or stopped to drive the compressor, and the compressor is electrically driven to work; the temperature of the cab is maintained, and the reliability of temperature control of the cab is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of refrigeration technology, and in particular relates to a refrigeration system based on a vehicle air conditioner and a control method. Background Art

[0002] In order to achieve refrigeration control of the vehicle air conditioner, fuel commercial vehicles on the market currently generally adopt the following refrigeration mode. When driving, a refrigeration system connected to a compressor is driven by the engine to work, and when parked, a system is driven by an electric compressor to work. The two systems are independent of each other. Specifically, in the invention patent application, CN202411786535.6 "A car air-conditioning heat exchange component, a car air-conditioning box and a car air-conditioning system" gives a similar structure, which has a higher cost and requires more space for layout.

[0003] In response to the above technical problems, the present application specifically provides a refrigeration system and a control method based on a vehicle air conditioner. Summary of the invention

[0004] To achieve the purpose of the present invention, the present invention adopts the following technical solutions: In a first aspect, the present application provides a refrigeration system based on a vehicle air conditioner, specifically comprising: The indoor condenser and outdoor evaporator of the refrigeration system connected to the compressor driven by the engine and the refrigeration system connected to the electric drive compressor are combined into one, and a mutually isolated pipeline is arranged between the indoor condenser and the outdoor evaporator. When the outside temperature is higher than the preset temperature or the heat load of the cab is greater than the preset heat load, the compressor is driven by the engine to operate; When the temperature of the cab drops to a specified temperature, the engine-driven compressor is disconnected or stopped, and the electric-driven compressor works instead to maintain the temperature of the cab.

[0005] A further technical solution is that the indoor condenser is arranged in an up-and-down manner.

[0006] A further technical solution is that the outdoor evaporator is arranged in a front-to-back manner.

[0007] A further technical solution is that a fan is shared between the indoor condenser and the outdoor evaporator.

[0008] In a second aspect, the present application provides a control method, which is applied to the above-mentioned refrigeration system based on a vehicle air conditioner, and specifically includes: S1: based on the analysis result of the driving data of the compressor under the remaining power of the battery of the vehicle, when it is determined that the abnormal operation data of the compressor meets the requirements, the predicted power consumption value for maintaining the preset temperature threshold within the preset time period is determined by using the analysis result of the weather data of the area where the vehicle is located; S2: determining the operating range of the battery based on the power consumption prediction value and the remaining power of the battery, and when it is determined that the driving reliability of the battery does not meet the requirement based on the analysis result of the historical discharge data of the battery within the operating range, determining the operating range of the battery corresponding to different target temperatures based on the power consumption prediction values ​​corresponding to different target temperatures maintained within a preset time, and determining the available operating range in the operating range using the historical discharge data; S3 determines the deviations between different available operating intervals and the endpoints of the specified operating interval, and determines the specified temperature in combination with the deviations between different target temperatures and the preset temperature threshold and the historical abnormal discharge data of the battery, and uses the specified temperature to control the operation of the electric drive compressor.

[0009] A further technical solution is that the remaining power of the battery is determined based on a monitoring result of a power monitoring device of the battery.

[0010] A further technical solution is that the driving data of the compressor includes the driving current and driving voltage of the battery to the compressor.

[0011] A further technical solution is that the method for determining the specified temperature is: Determining the deviation amount between the available operating interval and the endpoint of the designated operating interval based on the deviation between the available operating interval and the endpoint of the designated operating interval, and determining the fault influence factor of the available operating interval on the battery based on the deviation amount from the endpoint of the designated interval; Based on the deviation between the target temperature and the preset temperature threshold, determining a temperature deviation between the target temperature and the preset temperature threshold, and determining a temperature matching coefficient of the available operating range according to the temperature deviation; Based on the historical abnormal discharge data of the battery, determining the proportion of the working time of the battery not in the specified operating range, and determining the abnormal matching coefficient of the available operating range by multiplying it with the fault influence factor; According to the ratio of the temperature matching coefficient to the abnormal matching coefficient, the comprehensive matching coefficient of the available operating range is determined, the available operating range with the largest comprehensive matching coefficient is used as the target operating range, and the target temperature corresponding to the target operating range is used as the designated temperature.

[0012] The beneficial effects of the present invention are: This system can provide the most suitable working state under different refrigeration requirements, saving vehicle layout space while reducing product costs.

[0013] This system generates differentiated temperature control strategies based on the monitoring data of the cab temperature. It not only avoids the technical problem of insufficient working reliability of the vehicle's electric energy storage device caused by the unified use of electric drive compressors, but also avoids the technical problem of excessive energy consumption caused by the unified use of engines to drive compressors. On the basis of ensuring the real-time performance of temperature control, it also achieves balanced control of energy consumption and control reliability.

[0014] The specified temperature is determined based on the deviations between different available operating ranges and the endpoints of the specified operating range, the deviations between different target temperatures and preset temperature thresholds, and the historical abnormal discharge data of the battery. This takes into account the impact of maintaining the specified temperature on the battery life when the compressor is driven by the battery, as well as the difference in operating reliability caused by differences in the battery's maintenance of different specified temperatures due to differences in abnormal discharge data. This achieves the determination of the specified temperature from multiple dimensions, which reduces the fuel loss of the engine while also ensuring the reliability of the temperature control process.

[0015] Other features and advantages will be described in the following description. The objects and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and drawings.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings; Figure 1 It is a framework diagram of a refrigeration system based on vehicle air conditioning; Figure 2 is a flow chart of a control method; Figure 3 It is a flow chart for determining whether the abnormal operation data of the compressor meets the requirements; Figure 4 is a flow chart of a method for determining an operating range of a battery; Figure 5 The present invention is a flowchart of a method for determining an available operating range in an operating range. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0019] At present, fuel commercial vehicles on the market generally adopt the following refrigeration mode: when driving, the engine drives a set of refrigeration systems connected to the compressor to work, and when parking, the electric compressor drives another system to work. The two systems are independent of each other. This has a higher cost and requires more space for layout.

[0020] The core point of the present invention is that the indoor heat exchanger and the outdoor radiator in the two systems are combined into one, but considering that the refrigeration oil in the electric system and the fuel system is different, mutual use will have an impact, and the electric drive compressor has a small displacement under parking conditions, and directly connecting it to a system with a larger refrigeration capacity will cause system mismatch, compressor failure and other factors, so the flow channel between the two heat exchangers is isolated from each other, the evaporator adopts a front-to-back arrangement mode, and the condenser adopts an up-and-down arrangement mode, and a shared fan. When the outside temperature is high and the heat load of the cab is large, when the engine is working, the engine pulley drives the inner compressor to run, providing a large refrigeration capacity to cool the cab. After the temperature of the cab drops, the engine belt drive can be disconnected or stopped, and the electric drive compressor works instead, providing a smaller refrigeration capacity to work and maintain the temperature of the cab.

[0021] Example 1 like Figure 1 As shown, the present application provides a refrigeration system based on a vehicle air conditioner, specifically comprising: The indoor condenser and outdoor evaporator of the refrigeration system connected to the compressor driven by the engine and the refrigeration system connected to the electric drive compressor are combined into one, and a mutually isolated pipeline is arranged between the indoor condenser and the outdoor evaporator. When the outside temperature is higher than the preset temperature or the heat load of the cab is greater than the preset heat load, the compressor is driven by the engine to operate; When the temperature of the cab drops to a specified temperature, the engine-driven compressor is disconnected or stopped, and the electric-driven compressor works instead to maintain the temperature of the cab.

[0022] Furthermore, the indoor condenser is arranged in an up-and-down manner.

[0023] Specifically, the outdoor evaporator is arranged in a front-to-back manner.

[0024] It should be noted that the indoor condenser and the outdoor evaporator share a fan.

[0025] Example 2 When the number of times that the voltage of the compressor is not within the preset deviation voltage range under the remaining power of the compressor accounts for less than 0.1, it is determined that the abnormal operation data of the compressor meets the requirements.

[0026] When the number of abnormal discharges of the battery within the operating range is greater than 10 times, it is determined that the driving reliability of the battery does not meet the requirements.

[0027] The operating range in which the number of abnormal discharges is less than 3 times is regarded as the available operating range.

[0028] The specified operating range is a discharge range where the remaining power is between 20% and 90%.

[0029] The target temperature corresponding to the available operating range within the designated operating range and in which the deviation between the target temperature and the preset temperature threshold is less than 3 degrees Celsius is used as the designated temperature.

[0030] S3 determines the deviation between different available operating intervals and the endpoints of the specified operating interval, and determines the specified temperature in combination with the deviation between different target temperatures and the preset temperature threshold and the historical abnormal discharge data of the battery, and uses the specified temperature to control the operation of the electric drive compressor. Second, as Figure 2 As shown, the present application provides a control method, which is applied to the above-mentioned refrigeration system based on vehicle air conditioning, specifically comprising: S1: based on the analysis result of the driving data of the compressor under the remaining power of the battery of the vehicle, when it is determined that the abnormal operation data of the compressor meets the requirements, the predicted power consumption value for maintaining the preset temperature threshold within the preset time period is determined by using the analysis result of the weather data of the area where the vehicle is located; Furthermore, the remaining power of the battery is determined based on a monitoring result of a power monitoring device of the battery.

[0031] It should be noted that the driving data of the compressor includes the driving current and driving voltage of the battery on the compressor.

[0032] Specifically, the abnormal operation data of the compressor includes the number of abnormal operations in which the driving voltage of the compressor is not within a preset voltage range and the duration of different abnormal operation times.

[0033] Specifically, Figure 3 As shown, determining whether the abnormal operation data of the compressor meets the requirements specifically includes: Determining the number of abnormal operations in which the driving voltage of the compressor is not within a preset voltage range based on the analysis result of the driving data of the compressor under the remaining power of the battery; Determine the number of problems in the abnormal operation times based on the accumulated duration of time during which the driving voltage is not within the preset voltage range in different abnormal operation times; Whether the abnormal operation data of the compressor meets the requirements is determined according to the number of problems.

[0034] Further, when the problem number is not within a preset problem number interval, it is determined that the abnormal operation data of the compressor does not meet the requirements.

[0035] It should be noted that, when the abnormal operation data of the compressor does not meet the requirements, it is determined that the operation of the engine-driven compressor cannot be replaced by that of the electric-driven compressor.

[0036] Optionally, determining whether the abnormal operation data of the compressor meets the requirements specifically includes: Determining the number of abnormal operations in which the driving voltage of the compressor is not within a preset voltage range based on the analysis result of the driving data of the compressor under the remaining power of the battery; Based on the accumulated durations of the driving voltage not being within the preset voltage range during different abnormal operation times, a sum of the accumulated durations is determined and used as the sum of the deviation durations; Whether the abnormal operation data of the compressor meets the requirements is determined by summing the deviation duration.

[0037] Further, when the deviation duration sum is greater than a preset deviation duration threshold, it is determined that the abnormal operation data of the compressor does not meet the requirements.

[0038] Optionally, determining whether the abnormal operation data of the compressor meets the requirements specifically includes: S11, based on the analysis result of the driving data of the compressor under the remaining power of the battery, determining the number of abnormal operations in which the driving voltage of the compressor is not within a preset voltage range; S12 determines the number of occurrences of the driving voltage not being within the preset voltage range among different abnormal operation times, and determines the abnormal operation coefficients of the different abnormal operation times in combination with the duration of the different occurrence times; S13 determines a comprehensive operation abnormality coefficient based on the abnormal operation times and abnormal operation coefficients of different abnormal operation times, and determines whether the abnormal operation data of the compressor meets the requirements according to the comprehensive operation abnormality coefficient.

[0039] It should be noted that the comprehensive operation abnormality coefficient is determined according to the product of a preset abnormality coefficient corresponding to the number of abnormal operations and an average value of abnormal operation coefficients of different abnormal operation numbers.

[0040] Optionally, the above step S11 includes the following contents: S111: when it is determined based on the analysis result of the driving data of the compressor under the remaining power of the battery that the compressor does not have an abnormal operation number in which the driving voltage is not within the preset voltage range, it is determined that the abnormal operation data of the compressor meets the requirements; when the compressor has an abnormal operation number in which the driving voltage is not within the preset voltage range, the process proceeds to step S112; S112: When the abnormal operation number is greater than the preset operation number threshold, the process proceeds to step S113; when the abnormal operation number is not greater than the preset operation number threshold, the process proceeds to step S114; S113: when the ratio of the number of abnormal operations to the number of driving processes under the remaining power does not meet the requirement, it is determined that the abnormal operation data of the compressor does not meet the requirement; when the ratio of the number of abnormal operations to the number of driving processes under the remaining power meets the requirement, the process proceeds to step S114; S114 determines the initial driving abnormality coefficient based on the number of abnormal operations and the ratio of the number of abnormal operations to the number of driving processes under the remaining power. When the initial driving abnormality coefficient does not meet the requirements, it is determined that the abnormal operation data of the compressor does not meet the requirements. When the initial driving abnormality coefficient meets the requirements, it proceeds to step S12.

[0041] Optionally, the above step S12 includes the following contents: S121 determines the cumulative duration of the driving voltage not being within the preset voltage range in different abnormal operation times. When there is an abnormal operation time with a cumulative duration greater than the preset duration, the process proceeds to step S122. When there is no abnormal operation time with a cumulative duration greater than the preset duration, the process proceeds to step S125. S122: When the number of abnormal operation times with a cumulative duration greater than the preset duration does not meet the requirement, it is determined that the abnormal operation data of the compressor does not meet the requirement; when the number of abnormal operation times with a cumulative duration greater than the preset duration meets the requirement, the process proceeds to step S123; S123: When the initial driving abnormality coefficient is within the preset driving abnormality coefficient interval, the process proceeds to step S124; when the initial driving abnormality coefficient is not within the preset driving abnormality coefficient interval, the process proceeds to step S125; S124: according to different abnormal operation times, the cumulative duration of the driving voltage not being within the preset voltage range is summed and used as the deviation duration sum. When the deviation duration sum is greater than the duration setting value, it is determined that the abnormal operation data of the compressor does not meet the requirements. When the deviation duration sum is not greater than the duration setting value, the process proceeds to step S125. S125 determines the abnormal operation coefficients of different abnormal operation times according to the number of times the driving voltage is not within the preset voltage range and in combination with the duration of different occurrence times. When there are abnormal operation times in which the abnormal operation coefficient is within the preset operation coefficient abnormal range, it is determined that the abnormal operation data of the compressor does not meet the requirements. When there are no abnormal operation times in which the abnormal operation coefficient is not within the preset operation coefficient range, it proceeds to step S13.

[0042] Furthermore, the weather data of the area where the vehicle is located is determined based on the weather forecast data of the positioning location corresponding to the positioning device of the vehicle.

[0043] Optionally, the preset duration ranges from 1 hour to 6 hours.

[0044] It should also be noted that the method for determining the power consumption prediction value for maintaining the preset temperature threshold within the preset time period is: Determining a historical reference period of the preset time period based on the weather data within the preset time period; The power consumption forecast value is determined according to the average value of the power consumption for maintaining the preset temperature threshold in different historical reference periods.

[0045] Furthermore, the historical reference period is a historical period in which the deviation from weather data within a preset time period in the future is within a preset deviation range.

[0046] S2: determining the operating range of the battery based on the power consumption prediction value and the remaining power of the battery, and when it is determined that the driving reliability of the battery does not meet the requirement based on the analysis result of the historical discharge data of the battery within the operating range, determining the operating range of the battery corresponding to different target temperatures based on the power consumption prediction values ​​corresponding to different target temperatures maintained within a preset time, and determining the available operating range in the operating range using the historical discharge data; Specifically, Figure 4 As shown, the method for determining the operating range of the battery is: Based on the remaining power of the battery and in combination with the power consumption prediction value, determining the remaining power of the battery after a preset time period; An operating range of the battery is determined based on the remaining power after a preset period of time and the remaining power of the battery.

[0047] Further, determining that the driving reliability of the battery does not meet the requirements specifically includes: Determine the number of abnormal operations in which the driving voltage of the battery in the operating range is not within a preset voltage range based on the analysis result of the historical discharge data of the battery in the operating range; Whether the driving reliability of the battery meets the requirement is determined according to the number of abnormal operations within the operation range.

[0048] It should also be noted that when the number of abnormal operations within the operating range is greater than a preset abnormal number threshold, it is determined that the driving reliability of the battery does not meet the requirements.

[0049] It can be understood that when the driving reliability of the battery meets the requirements, the preset temperature threshold is used as the designated temperature.

[0050] Optionally, determining that the driving reliability of the battery does not meet the requirement specifically includes: Determine the number of abnormal operations in which the driving voltage of the battery in the operating range is not within a preset voltage range based on the analysis result of the historical discharge data of the battery in the operating range; Dividing the operation interval into different sub-intervals at equal intervals, and determining abnormal sub-intervals according to the number of abnormal operations in different sub-intervals; Whether the driving reliability of the battery meets the requirement is determined by the proportion of the number of abnormal sub-intervals.

[0051] Further, when the proportion of the number of abnormal sub-intervals is greater than the proportion of the number of preset intervals, it is determined that the driving reliability of the battery does not meet the requirement.

[0052] Optionally, determining that the driving reliability of the battery does not meet the requirement specifically includes: S21, based on the analysis result of the historical discharge data of the battery in the operating range, determines the number of abnormal operations in which the driving voltage of the battery in the operating range is not within the preset voltage range, and determines the voltage abnormality coefficients of different abnormal operation times based on the deviation of the driving voltage at different times in different abnormal operation times from the endpoints of the preset voltage range; S22: dividing the operation interval into different sub-intervals at equal intervals, and determining interval abnormality coefficients of different sub-intervals according to the number of abnormal operations in different sub-intervals and the voltage abnormality coefficients of different abnormal operation numbers; S23 determines the driving abnormality coefficient of the battery by the average value of the interval abnormality coefficients of different sub-intervals, and uses the driving abnormality coefficient to determine whether the driving reliability of the battery meets the requirements.

[0053] Optionally, when the driving abnormality coefficient is less than a preset driving abnormality coefficient threshold, it is determined that the driving reliability of the battery meets the requirements.

[0054] Optionally, the above step S21 includes the following contents: S211 determines the number of abnormal operations in which the driving voltage of the battery in the operating range is not within a preset voltage range based on the analysis result of the historical discharge data of the battery in the operating range. When the number of abnormal operations in the operating range does not meet the requirement, it is determined that the driving reliability of the battery does not meet the requirement. When the number of abnormal operations in the operating range meets the requirement, the process proceeds to step S212. S212, based on the deviation between the driving voltage at different times in different abnormal operation times and the endpoints of the preset voltage range, determine the voltage abnormality coefficients of different abnormal operation times, when there is an abnormal operation time with a voltage abnormality coefficient greater than the preset abnormality coefficient threshold, then turn to step S213, when there is no abnormal operation time with a voltage abnormality coefficient greater than the preset abnormality coefficient threshold, then turn to step S22; S213 takes the number of abnormal operations in which the voltage abnormality coefficient is greater than the preset abnormality coefficient threshold as the number of screening abnormalities. When the number of screening abnormalities does not meet the requirements, it is determined that the driving reliability of the battery does not meet the requirements. When the number of screening abnormalities meets the requirements, it goes to step S22.

[0055] Optionally, the above step S22 includes the following contents: S221 divides the operation interval into different sub-intervals at equal intervals, obtains the number of abnormal operations in different sub-intervals, and when there is no sub-interval with an abnormal operation number not within the preset number range, proceeds to step S223; when there is a sub-interval with an abnormal operation number not within the preset number range, proceeds to step S222; S222: The sub-intervals whose abnormal operation times are not within the preset times are regarded as suspected abnormal sub-intervals. When the ratio of the number of suspected abnormal sub-intervals does not meet the requirement, it is determined that the driving reliability of the battery does not meet the requirement. When the ratio of the number of suspected abnormal sub-intervals meets the requirement, the process proceeds to step S223. S223 determines the interval abnormality coefficients of different sub-intervals according to the number of abnormal operations in different sub-intervals and the voltage abnormality coefficients of different abnormal operation numbers. When there is a sub-interval whose interval abnormality coefficient does not meet the requirements, the process proceeds to step S224. When there is no sub-interval whose interval abnormality coefficient does not meet the requirements, the process proceeds to step S23. S224 obtains the number of sub-intervals whose interval abnormality coefficients do not meet the requirements. When the number of sub-intervals whose interval abnormality coefficients do not meet the requirements is within the preset interval number range, it is determined that the driving reliability of the battery does not meet the requirements. When the number of sub-intervals whose interval abnormality coefficients do not meet the requirements is not within the preset interval number range, proceed to step S23.

[0056] Specifically, Figure 5 As shown, the method for determining the available operating interval in the operating interval is: Determining the number of abnormal operations in which the driving voltage of the battery in the operating range is not within a preset voltage range by using the historical discharge data; Determine an abnormal proportional factor by using a ratio of the abnormal operation times to the historical driving times of the operation interval; An available operating range in the operating range is determined according to the abnormal proportional factor.

[0057] Further, when the abnormal proportional factor meets the requirement, it is determined that the operating range is an available operating range.

[0058] S3 determines the deviations between different available operating intervals and the endpoints of the specified operating interval, and determines the specified temperature in combination with the deviations between different target temperatures and the preset temperature threshold and the historical abnormal discharge data of the battery, and uses the specified temperature to control the operation of the electric drive compressor.

[0059] It should be noted that the designated operating range is a discharge range that will not cause damage to the battery, and is specifically determined according to a preset discharge range corresponding to the battery model.

[0060] It can be understood that the method for determining the specified temperature is: Determining the deviation amount between the available operating interval and the endpoint of the designated operating interval based on the deviation between the available operating interval and the endpoint of the designated operating interval, and determining the fault influence factor of the available operating interval on the battery based on the deviation amount from the endpoint of the designated interval; Based on the deviation between the target temperature and the preset temperature threshold, determining a temperature deviation between the target temperature and the preset temperature threshold, and determining a temperature matching coefficient of the available operating range according to the temperature deviation; Based on the historical abnormal discharge data of the battery, determining the proportion of the working time of the battery not in the specified operating range, and determining the abnormal matching coefficient of the available operating range by multiplying it with the fault influence factor; According to the ratio of the temperature matching coefficient to the abnormal matching coefficient, the comprehensive matching coefficient of the available operating range is determined, the available operating range with the largest comprehensive matching coefficient is used as the target operating range, and the target temperature corresponding to the target operating range is used as the specified temperature. A further technical solution is to use the specified temperature to control the operation of the electric drive compressor, specifically including: When the cab temperature drops to a specified temperature, the engine-driven compressor is disconnected or stopped, and the electric-driven compressor is used instead.

[0061] Optionally, the method for determining the specified temperature is: Based on the deviation between the endpoint of the available operating interval and the specified operating interval, determining the deviation between the endpoint of the available operating interval and the specified operating interval, and when the deviation from the endpoint of the specified operating interval does not meet the requirement, determining that the target temperature corresponding to the available operating interval does not belong to the specified temperature; When the deviation from the end point of the specified operating interval meets the requirements: Based on the deviation between the target temperature and the preset temperature threshold, determining the temperature deviation between the target temperature and the preset temperature threshold, and when the temperature deviation between the target temperature and the preset temperature threshold does not meet the requirement, determining that the target temperature corresponding to the available operating range does not belong to the specified temperature; When the temperature deviation between the target temperature and the preset temperature threshold meets the requirement: Determine the fault influence factor of the available operating interval on the battery based on the deviation from the endpoint of the designated interval, determine the proportion of the working time of the battery not in the designated operating interval based on the historical abnormal discharge data of the battery, and determine the abnormal matching coefficient of the available operating interval by multiplying it with the fault influence factor; when the abnormal matching coefficient of the available operating interval does not meet the requirement, determine that the target temperature corresponding to the available operating interval does not belong to the designated temperature; When the abnormal matching coefficient of the available operating range meets the requirements: A temperature matching coefficient of the available operating interval is determined according to the temperature deviation, a comprehensive matching coefficient of the available operating interval is determined according to the ratio of the temperature matching coefficient to the abnormal matching coefficient, and the specified temperature is determined using the comprehensive matching coefficient and target temperatures corresponding to different available operating intervals.

[0062] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0063] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0064] The above description is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, one or more embodiments of this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the scope of the claims of this specification.

Claims

1. A refrigeration system based on a vehicle air conditioner, characterized in that: Specifically include: The indoor condenser and outdoor evaporator of the refrigeration system connected to the compressor driven by the engine and the refrigeration system connected to the electric drive compressor are combined into one, and a mutually isolated pipeline is arranged between the indoor condenser and the outdoor evaporator. When the outside temperature is higher than the preset temperature or the heat load of the cab is greater than the preset heat load, the compressor is driven by the engine to operate; When the temperature of the cab drops to a specified temperature, the engine-driven compressor is disconnected or stopped, and the electric-driven compressor works instead to maintain the temperature of the cab.

2. The refrigeration system based on the vehicle air conditioner according to claim 1, characterized in that: The indoor condenser is arranged in an up-and-down manner.

3. The refrigeration system based on the vehicle air conditioner according to claim 1, characterized in that: The outdoor evaporator is arranged in a front-to-back manner.

4. The refrigeration system based on the vehicle air conditioner according to claim 1, characterized in that: The indoor condenser and the outdoor evaporator share a fan.

5. A control method, applied to a refrigeration system based on a vehicle air conditioner according to any one of claims 1 to 4, characterized in that: Specifically include: When it is determined that the abnormal operation data of the compressor meets the requirements based on the analysis results of the driving data of the compressor under the remaining power of the battery of the vehicle, the power consumption prediction value for maintaining the preset temperature threshold within the preset time period is determined by using the analysis results of the weather data of the area where the vehicle is located; Based on the power consumption prediction value and the remaining power of the battery, an operating range of the battery is determined; when it is determined that the driving reliability of the battery does not meet the requirement based on the analysis result of the historical discharge data of the battery within the operating range, the operating range of the battery corresponding to different target temperatures is determined based on the power consumption prediction values ​​corresponding to different target temperatures maintained within a preset time, and the available operating range in the operating range is determined using the historical discharge data; The deviations between different available operating intervals and the endpoints of the specified operating interval are determined, and the specified temperature is determined in combination with the deviations between different target temperatures and the preset temperature threshold and the historical abnormal discharge data of the battery, and the specified temperature is used to control the operation of the electric drive compressor.

6. The control method according to claim 5, characterized in that: The remaining power of the battery is determined according to the monitoring result of the power monitoring device of the battery.

7. The control method according to claim 5, characterized in that: The driving data of the compressor includes a driving current and a driving voltage of the compressor by the battery.

8. The control method according to claim 5, characterized in that: Determining whether the abnormal operation data of the compressor meets the requirements specifically includes: Determining the number of abnormal operations in which the driving voltage of the compressor is not within a preset voltage range based on the analysis result of the driving data of the compressor under the remaining power of the battery; Determine the number of problems in the abnormal operation times based on the accumulated duration of time during which the driving voltage is not within the preset voltage range in different abnormal operation times; Whether the abnormal operation data of the compressor meets the requirements is determined according to the number of problems.

9. The control method according to claim 8, characterized in that: When the problem number is not within a preset problem number interval, it is determined that the abnormal operation data of the compressor does not meet the requirements.

10. The control method according to claim 5, characterized in that: Determining that the driving reliability of the battery does not meet the requirements specifically includes: Determine the number of abnormal operations in which the driving voltage of the battery in the operating range is not within a preset voltage range based on the analysis result of the historical discharge data of the battery in the operating range; Dividing the operation interval into different sub-intervals at equal intervals, and determining abnormal sub-intervals according to the number of abnormal operations in different sub-intervals; Whether the driving reliability of the battery meets the requirement is determined according to the proportion of the number of abnormal sub-intervals.

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