Control method for new energy refrigerator car air conditioner

Abstract

The invention relates to the technical field of cold chain transportation, particularly provides a control method for an air conditioner of a new energy refrigerator car, and aims to solve the problem that refrigeration and endurance cannot be balanced due to unreasonable electric quantity distribution of an existing new energy refrigerator car. The control method for the air conditioner of the new energy refrigerator car comprises the steps that navigation information of the new energy refrigerator car is obtained; acquiring electric quantity information of the new energy refrigerator car; acquiring temperature information of an area where the new energy refrigerator car passes; and based on the navigation information and the electric quantity information of the new energy refrigerator car and the temperature information of the passing area, the refrigeration energy consumption of the air conditioner is planned. Navigation information, electric quantity information and temperature information of passing areas of the new energy refrigerator car are obtained, energy consumption needed by refrigeration and endurance of the refrigerator car is distributed in an overall mode in combination with the actual situation, energy saving is achieved by adjusting refrigeration energy consumption, and then the endurance of the refrigerator car is prolonged; the problem that refrigeration and endurance cannot be balanced due to the fact that electric quantity distribution of an existing new energy refrigerator car is unreasonable is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cold chain transportation, and particularly provides a control method for an air conditioner of a new energy refrigerated truck. Background Art

[0002] Cold chain logistics is closely related to people's economic life. As an important part of cold chain logistics, refrigerated truck transportation is a key link to ensure the freshness and quality safety of food. Ambient temperature is a key factor in refrigerated truck monitoring, directly affecting the nutritional loss and shelf life of food in the refrigerated truck.

[0003] With the development of new energy vehicle technology, more and more new energy refrigerated trucks are put into the cold chain transportation process as transportation carriers for cold chain logistics. However, during the cold chain transportation of existing new energy refrigerated trucks, in order to keep the refrigerated items in the carriage within the set temperature range all the time, no matter what the temperature of the passing area is, the air conditioner of the refrigerated truck is always controlled to refrigerate at a fixed frequency. This results in a large refrigeration energy consumption of the refrigerated truck, and further reduces the cruising range of the refrigerated truck. Therefore, how to reasonably allocate the refrigeration power consumption of new energy refrigerated trucks has become a technical problem to be solved urgently in this field.

[0004] In view of this, a new control method for an air conditioner of a new energy refrigerated truck is needed in this field to solve the existing problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem that the unreasonable power distribution of existing new energy refrigerated trucks leads to the inability to balance refrigeration and cruising range.

[0006] In a first aspect, the present invention provides a control method for an air conditioner of a new energy refrigerated truck, and the control method includes: obtaining navigation information of the new energy refrigerated truck; obtaining power information of the new energy refrigerated truck; obtaining temperature information of the area passed by the new energy refrigerated truck; and planning the refrigeration energy consumption of the air conditioner based on the navigation information, power information and temperature information of the area passed by the new energy refrigerated truck.

[0007] In the specific implementation manner of the above control method for the air conditioner of a new energy refrigerated truck, the navigation information of the new energy refrigerated truck is the distance between the new energy refrigerated truck and the destination. The step of "planning the refrigeration energy consumption of the air conditioner based on the navigation information, power information, and temperature information of the area passed by the new energy refrigerated truck" further includes: obtaining the power energy consumption of the new energy refrigerated truck based on the distance between the new energy refrigerated truck and the destination; obtaining the refrigeration energy consumption of the new energy refrigerated truck based on the temperature information of the area passed by the new energy refrigerated truck; comparing the power of the new energy refrigerated truck with the sum of the power energy consumption and the refrigeration energy consumption; if the power of the new energy refrigerated truck is greater than the sum of the power energy consumption and the refrigeration energy consumption, controlling the air conditioner of the new energy refrigerated truck to operate at a first frequency; if the power of the new energy refrigerated truck is less than or equal to the sum of the power energy consumption and the refrigeration energy consumption, controlling the air conditioner of the new energy refrigerated truck to operate at a second frequency, where the second frequency is less than the first frequency.

[0008] In the specific implementation manner of the above control method for the air conditioner of a new energy refrigerated truck, the navigation information of the new energy refrigerated truck is the road condition between the new energy refrigerated truck and the destination. The step of "planning the refrigeration energy consumption of the air conditioner based on the navigation information, power information, and temperature information of the area passed by the new energy refrigerated truck" further includes: obtaining the power energy consumption of the new energy refrigerated truck based on the road condition between the new energy refrigerated truck and the destination; obtaining the refrigeration energy consumption of the new energy refrigerated truck based on the temperature information of the area passed by the new energy refrigerated truck; comparing the power of the new energy refrigerated truck with the sum of the power energy consumption and the refrigeration energy consumption; if the power of the new energy refrigerated truck is greater than the sum of the power energy consumption and the refrigeration energy consumption, controlling the air conditioner of the new energy refrigerated truck to operate at a first frequency; if the power of the new energy refrigerated truck is less than or equal to the sum of the power energy consumption and the refrigeration energy consumption, controlling the air conditioner of the new energy refrigerated truck to operate at a third frequency, where the third frequency is less than the first frequency.

[0009] In the specific implementation manner of the above control method for the air conditioner of a new energy refrigerated truck, the power energy consumption of the new energy refrigerated truck is E 1 The refrigeration energy consumption of the new energy refrigerated truck is E 2 The power of the new energy refrigerated truck is E, E 1 +E 2 ≤E. The temperature information of the area passed by the new energy refrigerated truck is the temperature curve between the new energy refrigerated truck and the destination. The control method further includes: obtaining the corresponding relationship between the refrigeration power P of the new energy refrigerated truck and the operating frequency f of the air conditioner based on the formula P = K 1 *f 2 +K 2 *(T a -T s ) where K1 , K 2 is a coefficient; based on the formula ΣPi*ti≤E 2 obtain the optimal operating frequency sequence [f 1 , f 2 ... f n of the air conditioner.

[0010] In the specific implementation of the above control method for the air conditioner of a new energy refrigerated truck, the refrigerated truck air conditioner includes a first temperature sensor for obtaining the temperature of the carriage, and the first temperature sensor is communicatively connected to the controller of the refrigerated truck air conditioner. The control method further includes: controlling the first temperature sensor to obtain the internal temperature of the carriage; obtaining the thermal inertia coefficient of the refrigerated goods; comparing the internal temperature of the carriage with the preset temperature and the thermal inertia coefficient of the refrigerated goods with the preset thermal inertia coefficient; and adjusting the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison result.

[0011] In the specific implementation of the above control method for the air conditioner of a new energy refrigerated truck, the step of "adjusting the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison result" further includes: if the internal temperature of the carriage is greater than the preset temperature and the thermal inertia coefficient of the refrigerated goods is greater than the preset thermal inertia coefficient, controlling the compressor of the refrigerated truck air conditioner to operate at a fourth frequency.

[0012] In the specific implementation of the above control method for the air conditioner of a new energy refrigerated truck, the step of "adjusting the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison result" further includes: if the internal temperature of the carriage is greater than the preset temperature and the thermal inertia coefficient of the refrigerated goods is less than or equal to the preset thermal inertia coefficient, controlling the compressor of the refrigerated truck air conditioner to operate at a fifth frequency, where the fifth frequency is lower than the fourth frequency.

[0013] In the specific implementation of the above control method for the air conditioner of a new energy refrigerated truck, the step of "adjusting the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison result" further includes: if the internal temperature of the carriage is less than or equal to the preset temperature, controlling the compressor of the refrigerated truck air conditioner to operate at a sixth frequency, where the sixth frequency is lower than the fifth frequency.

[0014] In the specific implementation of the above control method for the air conditioner of a new energy refrigerated truck, before and after the step of "adjusting the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison result", the following steps are also included: obtaining the current remaining travel information and average speed of the refrigerated truck; obtaining the time required for the refrigerated truck to complete the remaining journey based on the current remaining travel information and average speed of the refrigerated truck; comparing the time required for the refrigerated truck to complete the remaining journey with a preset time; adjusting the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison result; if the temperature inside the carriage is less than or equal to the preset temperature, the thermal inertia coefficient of the refrigerated goods is greater than or equal to the preset thermal inertia coefficient, and the time required for the refrigerated truck to complete the remaining journey is less than or equal to the preset time, then controlling the compressor of the refrigerated truck air conditioner to operate at a seventh frequency, where the seventh frequency is lower than the sixth frequency.

[0015] In the specific implementation of the above control method for the air conditioner of a new energy refrigerated truck, after the step of "adjusting the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison result", the following steps are also included: if the temperature inside the carriage is less than or equal to the preset temperature, the thermal inertia coefficient of the refrigerated goods is less than the preset thermal inertia coefficient, and the time required for the refrigerated truck to complete the remaining journey is less than or equal to the preset time, then controlling the compressor of the refrigerated truck air conditioner to operate at an eighth frequency, where the eighth frequency is higher than the seventh frequency and lower than the sixth frequency.

[0016] The technical effect of the present invention is as follows: The new energy refrigerated truck of the present invention obtains the power consumption information required for the refrigerated truck to continue its journey during transportation by obtaining the navigation information of the refrigerated truck, and obtains the power consumption information required for the refrigerated truck to refrigerate during transportation by obtaining the temperature information of the passing areas. By combining the above two power consumption information with the remaining power information of the refrigerated truck itself, the refrigeration energy consumption of the refrigerated truck air conditioner is planned, avoiding a large amount of ineffective energy consumption during the refrigeration process, thereby extending the endurance of the new energy refrigerated truck and solving the problem that the unreasonable power distribution of the existing new energy refrigerated truck leads to the inability to balance refrigeration and endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings, in which:

[0018] Figure 1 is the main flowchart of Embodiment 1;

[0019] Figure 2 is the flowchart of steps S41 - S45 in Embodiment 1;

[0020] Figure 3 is the flowchart of steps S46 - S410 in Embodiment 1;

[0021] Figure 4 is the flowchart of steps S5, S6 in Embodiment 1;

[0022] Figure 5 is the main flowchart of the second embodiment;

[0023] Figure 6 is the flowchart of step S10 in the second embodiment;

[0024] Figure 7 is the flowchart of steps SA - SE in the second embodiment. Detailed implementation manners

[0025] The preferred implementation manners of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0026] First, the transportation process of the existing new - energy refrigerated vehicle is described. During the cold - chain transportation of the existing new - energy refrigerated vehicle, in order to keep the refrigerated items in the carriage within the set temperature range all the time, no matter what the temperature of the passing area is, the air conditioner of the refrigerated vehicle is always controlled to refrigerate at a fixed frequency. This results in a large refrigeration energy consumption of the refrigerated vehicle, and further reduces the cruising range of the refrigerated vehicle. Therefore, how to reasonably allocate the refrigeration power consumption of the new - energy refrigerated vehicle has become an urgent technical problem in this field, and the following implementation manners are proposed for this purpose.

[0027] Embodiment 1

[0028] As Figure 1 , Figure 2 shown, to solve the problem that the unreasonable power allocation of the existing new - energy refrigerated vehicle leads to the inability to balance refrigeration and cruising range, the control method for the air conditioner of the new - energy refrigerated vehicle of the present invention includes:

[0029] S1. Obtain the navigation information of the new - energy refrigerated vehicle;

[0030] S2. Obtain the power information of the new - energy refrigerated vehicle;

[0031] S3. Obtain the temperature information of the area passed by the new - energy refrigerated vehicle;

[0032] S4. Plan the refrigeration energy consumption of the air conditioner based on the navigation information, power information and temperature information of the area passed by the new - energy refrigerated vehicle.

[0033] In the above steps, the navigation information of the new - energy refrigerated vehicle is the distance between the new - energy refrigerated vehicle and the destination, and step S4 further includes:

[0034] S41. Obtain the power consumption of the new - energy refrigerated vehicle based on the distance between the new - energy refrigerated vehicle and the destination;

[0035] S42. Obtain the refrigeration energy consumption of the new energy refrigerated vehicle based on the temperature information of the areas passed by the new energy refrigerated vehicle;

[0036] S43. Compare the power of the new energy refrigerated vehicle with the sum of the power energy consumption and the refrigeration energy consumption;

[0037] S44. If the power of the new energy refrigerated vehicle is greater than the sum of the power energy consumption and the refrigeration energy consumption, control the air conditioner of the new energy refrigerated vehicle to operate at the first frequency;

[0038] S45. If the power of the new energy refrigerated vehicle is less than or equal to the sum of the power energy consumption and the refrigeration energy consumption, control the air conditioner of the new energy refrigerated vehicle to operate at the second frequency, where the second frequency is less than the first frequency.

[0039] In the case of adopting the above implementation manner, first, obtain the distance between the new energy refrigerated vehicle and the destination through the map software, and obtain the power energy consumption of the new energy refrigerated vehicle based on the distance between the new energy refrigerated vehicle and the destination. Then obtain the temperature information of the areas passed by the new energy refrigerated vehicle, and obtain the refrigeration energy consumption of the new energy refrigerated vehicle based on the temperature information of the areas passed by the new energy refrigerated vehicle. Finally, obtain the remaining power information of the new energy refrigerated vehicle, and compare the power of the new energy refrigerated vehicle with the sum of the power energy consumption and the refrigeration energy consumption. If the remaining power of the new energy refrigerated vehicle is greater than the sum of the power energy consumption and the refrigeration energy consumption, it indicates that the remaining power of the new energy refrigerated vehicle is sufficient at this time. Therefore, control the air conditioner to operate at the first frequency to fully ensure the cold degree of the refrigerated items in the carriage. If the power of the new energy refrigerated vehicle is less than or equal to the sum of the power energy consumption and the refrigeration energy consumption, it indicates that the remaining power of the new energy refrigerated vehicle is insufficient at this time. Therefore, control the air conditioner to operate at the second frequency to meet the basic cold degree of the refrigerated items in the carriage. Since the second frequency is less than the first frequency, the air conditioner operating at a lower frequency can reduce the refrigeration energy consumption of the air conditioner, so that the new energy refrigerated vehicle can have more power for endurance, solving the problem that the unreasonable power distribution of the existing new energy refrigerated vehicle leads to the inability to balance refrigeration and endurance.

[0040] In the above steps, the navigation information of the new energy refrigerated vehicle can also be the road condition information between the new energy refrigerated vehicle and the destination, such as Figure 3 shown, step S4 is further included:

[0041] S46. Obtain the power energy consumption of the new energy refrigerated vehicle based on the road conditions between the new energy refrigerated vehicle and the destination;

[0042] S47. Obtain the refrigeration energy consumption of the new energy refrigerated vehicle based on the temperature information of the areas passed by the new energy refrigerated vehicle;

[0043] S48. Compare the power of the new energy refrigerated vehicle with the sum of the power energy consumption and the refrigeration energy consumption;

[0044] S49. If the power of the new energy refrigerated truck is greater than the sum of the power consumption and the refrigeration energy consumption, control the air conditioner of the new energy refrigerated truck to operate at the first frequency;

[0045] S410. If the power of the new energy refrigerated truck is less than or equal to the sum of the power consumption and the refrigeration energy consumption, control the air conditioner of the new energy refrigerated truck to operate at the third frequency, where the third frequency is less than the first frequency.

[0046] In the case of adopting the above implementation manner, different from the foregoing implementation manner, in this implementation manner, the road condition information (such as whether there is a traffic jam and whether the road is rough) between the new energy refrigerated truck and the destination is obtained through a map software. Since the power consumption of the new energy refrigerated truck is different under different road conditions, in this implementation manner, the power consumption of the new energy refrigerated truck is obtained based on the road conditions between the new energy refrigerated truck and the destination, and after adding the power consumption and the obtained refrigeration energy consumption, the sum is compared with the remaining power of the new energy refrigerated truck. If it is less than the remaining power of the new energy refrigerated truck, control the air conditioner to operate at the first frequency. If it is greater than or equal to the remaining power of the new energy refrigerated truck, control the air conditioner of the new energy refrigerated truck to operate at the third frequency, where the third frequency is less than the first frequency to reduce the refrigeration energy consumption of the air conditioner.

[0047] In the above steps, the power consumption of the new energy refrigerated truck is E 1 , the refrigeration energy consumption of the new energy refrigerated truck is E 2 , the power of the new energy refrigerated truck is E, E 1 +E 2 ≤E, the temperature information of the area passed by the new energy refrigerated truck is the temperature curve between the new energy refrigerated truck and the destination, as Figure 4 shown, the control method further includes:

[0048] S5. Obtain the corresponding relationship between the refrigeration power P of the new energy refrigerated truck and the operating frequency f of the air conditioner based on the formula P = K 1 *f 2 +K 2 *(T a -T s ), where K 1 , K 2 are coefficients;

[0049] S6. Obtain the optimal operating frequency sequence [f 2 , f 1 ...f 2 ...f n of the air conditioner based on the formula ΣPi*ti ≤ E

[0050] In the foregoing embodiments, the temperature information of the area passed by the new energy refrigerated truck is the average temperature or the median temperature of the passed area, which is used to calculate the refrigeration energy consumption. However, since the refrigerated truck usually needs to cross multiple provinces during the cold chain transportation, for example, transporting aquatic products along the coast to the inland, or transporting fruits in the south to the north, there may be large temperature differences in the areas passed by the refrigerated truck. Therefore, in this embodiment, a temperature curve showing the change of temperature with position between the new energy refrigerated truck and the destination is selected, and based on the formula P = K 1 *f 2 +K 2 *(T a -T s ), the corresponding relationship between the refrigeration power P of the new energy refrigerated truck and the operating frequency f of the air conditioner is obtained, where T a is the temperature of the passed area on the temperature curve, f is the operating frequency of the air conditioner compressor, and then the refrigeration power curve of the new energy refrigerated truck on different road sections can be obtained. Combining the power consumption distribution of the power E, the power consumption of motive force E 1 and the refrigeration energy consumption E 2 of the new energy refrigerated truck, based on the formula ΣPi*ti ≤ E 2 , the optimal operating frequency sequence [f 1 , f 2 ... f n of the air conditioner is obtained, where ΣPi*ti represents the sum of the products of the refrigeration power and the refrigeration time of the air conditioner on all road sections, that is, the total refrigeration energy consumption of the air conditioner on all road sections does not exceed the refrigeration energy consumption E 2 of the new energy refrigerated truck.

[0051] The advantages of the above embodiments are as follows: By obtaining the temperature curve of the passed area and combining the refrigeration energy consumption E 2 of the air conditioner, the optimal operating frequency sequence of the air conditioner can be obtained, so that during the transportation of the new energy refrigerated truck of the present invention, the air conditioner can be controlled to operate at different frequencies according to different temperatures on different road sections, achieving the minimum refrigeration energy consumption under the condition of meeting the refrigeration requirements.

[0052] Embodiment 2

[0053] The refrigerated truck air conditioner includes a first temperature sensor for obtaining the temperature of the carriage, and the first temperature sensor is communicatively connected to the controller of the refrigerated truck air conditioner. As shown in Figure 5 , Figure 6 , the control method further includes:

[0054] S7. Control the first temperature sensor to obtain the temperature inside the carriage;

[0055] S8. Obtain the thermal inertia coefficient of the refrigerated goods;

[0056] S9. Compare the temperature inside the carriage with the preset temperature and the thermal inertia coefficient of the refrigerated goods with the preset thermal inertia coefficient;

[0057] S10. Adjust the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison results.

[0058] In the above steps, step S10 further includes:

[0059] S101. If the temperature inside the carriage is greater than the preset temperature and the thermal inertia coefficient of the refrigerated goods is greater than the preset thermal inertia coefficient, control the compressor of the refrigerated truck air conditioner to operate at the fourth frequency;

[0060] S102. If the temperature inside the carriage is greater than the preset temperature and the thermal inertia coefficient of the refrigerated goods is less than or equal to the preset thermal inertia coefficient, control the compressor of the refrigerated truck air conditioner to operate at the fifth frequency, where the fifth frequency is lower than the fourth frequency;

[0061] S103. If the temperature inside the carriage is less than or equal to the preset temperature, control the compressor of the refrigerated truck air conditioner to operate at the sixth frequency, where the sixth frequency is lower than the fifth frequency.

[0062] In the case of adopting the above implementation manner, first control the first temperature sensor to obtain the temperature inside the carriage, and at the same time obtain the thermal inertia coefficient of the refrigerated goods by means of manual input or reading data from the cloud or database. Then compare the temperature inside the carriage with the preset temperature, compare the thermal inertia coefficient of the refrigerated goods with the preset thermal inertia coefficient, and adjust the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison results. Specifically, if the temperature inside the carriage is greater than the preset temperature, it means that at this time, it is necessary to increase the cold storage inside the carriage. Therefore, it is necessary to improve the refrigeration efficiency of the refrigerated truck air conditioner. At the same time, if the thermal inertia coefficient of the refrigerated goods is greater than the preset thermal inertia coefficient, it means that the temperature of the refrigerated goods itself changes relatively slowly with the external temperature. Therefore, at this time, it is necessary to greatly increase the operating frequency of the compressor and make the compressor operate at the fourth frequency. If the temperature inside the carriage is greater than the preset temperature, but the thermal inertia coefficient of the refrigerated goods is less than or equal to the preset thermal inertia coefficient, it means that the temperature of the refrigerated goods itself changes relatively quickly with the external temperature. At this time, there is no need to greatly increase the operating frequency of the compressor, and only the normal operating frequency of the compressor needs to be increased, so that the compressor operates at the fifth frequency. If the temperature inside the carriage is less than or equal to the preset temperature, it means that at this time, there is no need to improve the refrigeration efficiency of the refrigerated truck air conditioner. Therefore, it is only necessary to make the compressor operate at a lower operating frequency for energy-saving operation and maintain the current temperature inside the carriage, so that the compressor operates at the sixth frequency.

[0063] The advantages of the above embodiments are as follows: By obtaining the temperature inside the carriage and comparing it with the preset temperature, it is possible to determine whether the current temperature inside the carriage meets the refrigeration requirements for the refrigerated goods. By obtaining the thermal inertia coefficient of the refrigerated goods and comparing it with the preset thermal inertia coefficient, it is possible to obtain the ease of temperature change of the refrigerated goods themselves when the surrounding temperature changes, and based on this, obtain the temperature change trend of the refrigerated goods themselves when the surrounding temperature changes. Based on this, the refrigeration efficiency of the refrigerated truck air conditioner can be accurately adjusted accordingly.

[0064] During the cold chain transportation of a refrigerated truck, the refrigerated truck does not actually need to refrigerate the refrigerated goods inside the carriage throughout the whole process. For example, when the refrigerated truck is about to reach the destination, if there is sufficient cold energy reserve inside the carriage at this time, there is no need to predict the temperature change trend of the refrigerated goods and adjust the refrigeration efficiency of the refrigerated truck air conditioner. For this reason, this embodiment is proposed. In this embodiment, as Figure 7 shown, before and after step S10, the following steps are also included:

[0065] SA. Obtain the current remaining travel information and average vehicle speed of the refrigerated truck;

[0066] SB. Based on the current remaining travel information and average vehicle speed of the refrigerated truck, obtain the time required for the refrigerated truck to complete the remaining journey;

[0067] SC. Compare the time required for the refrigerated truck to complete the remaining journey with the preset time;

[0068] S10. Adjust the refrigeration efficiency of the refrigerated truck air conditioner based on the comparison result;

[0069] SD. If the temperature inside the carriage is less than or equal to the preset temperature, the thermal inertia coefficient of the refrigerated goods is greater than or equal to the preset thermal inertia coefficient, and the time required for the refrigerated truck to complete the remaining journey is less than or equal to the preset time, then control the compressor of the refrigerated truck air conditioner to operate at the seventh frequency, where the seventh frequency is lower than the sixth frequency;

[0070] SE. If the temperature inside the carriage is less than or equal to the preset temperature, the thermal inertia coefficient of the refrigerated goods is less than the preset thermal inertia coefficient, and the time required for the refrigerated truck to complete the remaining journey is less than or equal to the preset time, then control the compressor of the refrigerated truck air conditioner to operate at the eighth frequency, where the eighth frequency is higher than the seventh frequency and lower than the sixth frequency.

[0071] In the case of adopting the above-mentioned implementation manner, during the cold chain transportation of a refrigerated truck, the remaining journey information and average vehicle speed of the refrigerated truck can be obtained through the in-vehicle map software. Based on the remaining journey information and average vehicle speed of the refrigerated truck, the time required for the refrigerated truck to complete the remaining journey can be estimated. Then, the time required for the refrigerated truck to complete the remaining journey is compared with the preset time. Finally, the refrigeration efficiency of the refrigerated truck air conditioner is adjusted based on the comparison result. Specifically, if the temperature inside the carriage is less than or equal to the preset temperature, it indicates that the temperature of the refrigerated goods meets the refrigeration requirements at this time. At the same time, if the thermal inertia coefficient of the refrigerated goods is greater than or equal to the preset thermal inertia coefficient and the time required for the refrigerated truck to complete the remaining journey is less than or equal to the preset time, it indicates that the refrigerated goods have good self-temperature retention and the refrigerated truck will arrive at the destination in a short time. Therefore, relying only on the current cold quantity reserve of the refrigerated goods can deliver the refrigerated goods to the destination on the premise of meeting the refrigeration requirements. Therefore, the compressor of the refrigerated truck air conditioner can be operated at the seventh frequency. It is mentioned in the first embodiment above that the compressor operating at the sixth frequency can maintain the current temperature inside the carriage. The seventh frequency is less than the sixth frequency. Therefore, the compressor operates at the seventh frequency to slow down the loss rate of the cold quantity of the refrigerated goods. The seventh frequency can be set to a very small value, or when the cold quantity reserve of the refrigerated goods is sufficient, the seventh frequency can be zero (i.e., the compressor stops working), so as to achieve the effect of reducing energy consumption.

[0072] The above is the case where the temperature inside the carriage is less than or equal to the preset temperature and the thermal inertia coefficient of the refrigerated goods is greater than or equal to the preset thermal inertia coefficient. If the temperature inside the carriage is less than or equal to the preset temperature but the thermal inertia coefficient of the refrigerated goods is less than the preset thermal inertia coefficient, and at the same time the time required for the refrigerated truck to complete the remaining journey is less than or equal to the preset time, due to the small thermal inertia coefficient of the refrigerated goods, relying only on the cold quantity reserve of the refrigerated goods may not be sufficient to support reaching the destination. Therefore, the compressor of the refrigerated truck air conditioner is controlled to operate at the eighth frequency, where the eighth frequency is higher than the seventh frequency and lower than the sixth frequency. Being higher than the seventh frequency can achieve a better purpose of slowing down the loss rate of the cold quantity of the refrigerated goods, and being lower than the sixth frequency can achieve the effect of saving energy consumption.

[0073] It should be noted that the above implementation manner is only used to illustrate the principle of the present invention and is not intended to limit the protection scope of the present invention. Without deviating from the principle of the present invention, those skilled in the art can adjust the above structure so that the present invention can be applied to more specific application scenarios.

[0074] Those skilled in the art can understand that the above-mentioned new energy refrigerated vehicle air conditioner also includes some other well-known structures, such as processors, controllers, memories, etc. Among them, the memory includes but is not limited to random access memory, flash memory, read-only memory, programmable read-only memory, volatile memory, non-volatile memory, serial memory, parallel memory, or registers, etc. The processor includes but is not limited to CPLD / FPGA, DSP, ARM processor, MIPS processor, etc. In order not to unnecessarily obscure the embodiments of the present disclosure, these well-known structures are not shown in the drawings.

[0075] Although the steps are described in the above-mentioned order in the above embodiments, those skilled in the art can understand that in order to achieve the effects of this embodiment, different steps do not have to be executed in such an order. They can be executed simultaneously (in parallel) or in a reversed order. For example, S1, S2, S3. These simple changes are all within the protection scope of the present invention.

[0076] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A control method for a new energy refrigerated vehicle air conditioner, characterized in that: The control method comprises: Obtaining navigation information of the new energy refrigerated truck; Obtaining power information of the new energy refrigerated truck; Obtaining temperature information of an area through which the new energy refrigerated truck passes; The refrigeration energy consumption of the air conditioner is planned based on the navigation information, power information and temperature information of the passing area of ​​the new energy refrigerated truck.

2. The control method for the air conditioner of a new energy refrigerated vehicle according to claim 1, characterized in that: The navigation information of the new energy refrigerated truck is the distance between the new energy refrigerated truck and the destination, and the step of "planning the refrigeration energy consumption of the air conditioner based on the navigation information, power information and temperature information of the passing area of ​​the new energy refrigerated truck" further includes: Obtaining the power consumption of the new energy refrigerated truck based on the distance between the new energy refrigerated truck and the destination; Acquiring the refrigeration energy consumption of the new energy refrigeration truck based on the temperature information of the area through which the new energy refrigeration truck passes; Comparing the power consumption of the new energy refrigerated truck with the sum of the power energy consumption and the refrigeration energy consumption; If the power consumption of the new energy refrigeration vehicle is greater than the sum of the power energy consumption and the refrigeration energy consumption, controlling the air conditioner of the new energy refrigeration vehicle to operate at a first frequency; If the power of the new energy refrigeration vehicle is less than or equal to the sum of the power energy consumption and the refrigeration energy consumption, the air conditioner of the new energy refrigeration vehicle is controlled to operate at a second frequency, wherein the second frequency is less than the first frequency.

3. The control method for the air conditioner of a new energy refrigerated vehicle according to claim 1, characterized in that: The navigation information of the new energy refrigerated truck is the road condition between the new energy refrigerated truck and the destination, and the step of "planning the refrigeration energy consumption of the air conditioner based on the navigation information, power information and temperature information of the passing area of ​​the new energy refrigerated truck" further includes: Acquiring the power energy consumption of the new energy refrigerated truck based on the road conditions between the new energy refrigerated truck and the destination; Acquiring the refrigeration energy consumption of the new energy refrigeration truck based on the temperature information of the area through which the new energy refrigeration truck passes; Comparing the power consumption of the new energy refrigerated truck with the sum of the power energy consumption and the refrigeration energy consumption; If the power consumption of the new energy refrigeration vehicle is greater than the sum of the power energy consumption and the refrigeration energy consumption, controlling the air conditioner of the new energy refrigeration vehicle to operate at a first frequency; If the power of the new energy refrigeration vehicle is less than or equal to the sum of the power energy consumption and the refrigeration energy consumption, the air conditioner of the new energy refrigeration vehicle is controlled to operate at a third frequency, wherein the third frequency is less than the first frequency.

4. The control method for the air conditioner of a new energy refrigerated vehicle according to claim 2 or 3, characterized in that: The power consumption of the new energy refrigerated truck is E1, the refrigeration energy consumption of the new energy refrigerated truck is E2, the power of the new energy refrigerated truck is E, E1+E2≤E, the temperature information of the area passed by the new energy refrigerated truck is the temperature curve between the new energy refrigerated truck and the destination, and the control method further includes: Based on the formula P = K1*f 2 +K2*(T a -T s ) obtain the corresponding relationship between the refrigeration power P of the new energy refrigerated truck and the operating frequency f of the air conditioner, where K1 and K2 are coefficients; Based on the formula ΣPi*ti≤E2, the optimal operating frequency sequence [f1, f2...f n ].

5. The control method for the air conditioner of a new energy refrigerated vehicle according to claim 1, characterized in that: The refrigerated vehicle air conditioner includes a first temperature sensor for obtaining a vehicle compartment temperature, the first temperature sensor is communicatively connected to a controller of the refrigerated vehicle air conditioner, and the control method further includes: Controlling the first temperature sensor to obtain the internal temperature of the vehicle compartment; Obtain the thermal inertia coefficient of the refrigerated items; Compare the temperature inside the compartment with the preset temperature and the thermal inertia coefficient of the refrigerated items with the preset thermal inertia coefficient; The refrigeration efficiency of the air conditioner of the refrigerated vehicle is adjusted based on the comparison result.

6. The control method for the air conditioner of a new energy refrigerated vehicle according to claim 5, characterized in that: The step of "adjusting the refrigeration efficiency of the refrigerated vehicle air conditioner based on the comparison result" further includes: If the temperature inside the vehicle compartment is greater than a preset temperature and the thermal inertia coefficient of the refrigerated goods is greater than a preset thermal inertia coefficient, the compressor of the refrigerated vehicle air conditioner is controlled to operate at a fourth frequency.

7. The control method for the air conditioner of a new energy refrigerated vehicle according to claim 6, characterized in that: The step of "adjusting the refrigeration efficiency of the refrigerated vehicle air conditioner based on the comparison result" also includes: If the temperature inside the vehicle compartment is greater than a preset temperature and the thermal inertia coefficient of the refrigerated items is less than or equal to a preset thermal inertia coefficient, the compressor of the refrigerated vehicle air conditioner is controlled to operate at a fifth frequency, wherein the fifth frequency is lower than the fourth frequency.

8. The control method for the air conditioner of a new energy refrigerated vehicle according to claim 7, characterized in that: The step of "adjusting the refrigeration efficiency of the refrigerated vehicle air conditioner based on the comparison result" also includes: If the temperature inside the vehicle compartment is less than or equal to a preset temperature, the compressor of the refrigerated vehicle air conditioner is controlled to operate at a sixth frequency, wherein the sixth frequency is lower than the fifth frequency.

9. The control method for the air conditioner of a new energy refrigerated vehicle according to claim 8, characterized in that: Before and after the step of "adjusting the refrigeration efficiency of the refrigerated vehicle air conditioner based on the comparison result", the following steps are also included: Obtaining the current remaining distance information and average speed of the refrigerated truck; Obtaining the time required for the refrigerated truck to complete the remaining journey based on the current remaining journey information and the average vehicle speed of the refrigerated truck; Compare the time required for the refrigerated truck to complete the remaining journey with the preset time; adjusting the refrigeration efficiency of the air conditioner of the refrigerated vehicle based on the comparison result; If the temperature inside the vehicle compartment is less than or equal to a preset temperature and the thermal inertia coefficient of the refrigerated items is greater than or equal to a preset thermal inertia coefficient, and the time required for the refrigerated vehicle to complete the remaining journey is less than or equal to a preset time, the compressor of the refrigerated vehicle air conditioner is controlled to operate at a seventh frequency, where the seventh frequency is lower than the sixth frequency.

10. The control method for the air conditioner of a new energy refrigerated vehicle according to claim 9, characterized in that: The step of "adjusting the refrigeration efficiency of the air conditioner of the refrigerated vehicle based on the comparison result" further includes: If the temperature inside the vehicle compartment is less than or equal to a preset temperature and the thermal inertia coefficient of the refrigerated items is less than a preset thermal inertia coefficient, and the time required for the refrigerated vehicle to complete the remaining journey is less than or equal to a preset time, the compressor of the refrigerated vehicle air conditioner is controlled to operate at an eighth frequency, where the eighth frequency is higher than the seventh frequency and lower than the sixth frequency.

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