A method and system for predicting energy consumption of an air conditioner of a vehicle

Abstract

This invention provides a method and system for predicting vehicle air conditioning energy consumption, relating to the field of new energy vehicle technology. The invention first calculates the basic energy consumption value of the vehicle's air conditioning based on ambient temperature and air conditioning operation information. Then, it calculates the predicted energy consumption compensation value of the vehicle's air conditioning within a preset future time period based on predicted weather temperature, predicted sunlight intensity, and predicted sunlight altitude. Finally, it calculates the final energy consumption value of the vehicle's air conditioning within the preset future time period based on the basic energy consumption value and the predicted energy consumption compensation value. This technical solution predicts air conditioning energy consumption based on future weather changes, rather than directly extrapolating future time from current basic energy consumption values. Therefore, it improves the accuracy of air conditioning energy consumption calculation, thereby further improving the accuracy of vehicle range prediction.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to a method and system for predicting air conditioning energy consumption in vehicles. Background Technology

[0002] With the increasing popularity of electric vehicles, plug-in hybrids, and strong hybrids, in-vehicle air conditioning systems are also gradually becoming electrified. Due to the current shortage of charging stations and long charging times, users are paying increasing attention to the remaining driving range. Hybrid vehicles can be refueled at any time to alleviate range anxiety, while electric vehicles are more concerned about which charging station they can reach with their current battery level.

[0003] The current mainstream algorithms for calculating mileage are similar to those for traditional gasoline vehicles, using historical energy consumption to estimate the remaining driving range. This algorithm is not suitable for electric vehicles, and the calculation of air conditioning energy consumption is also inaccurate. Inaccurate calculation of air conditioning energy consumption will ultimately lead to excessive deviations in the predicted driving range. Summary of the Invention

[0004] One objective of the first aspect of this invention is to provide a method for predicting the energy consumption of a vehicle's air conditioning system, thereby solving the technical problem in the prior art where inaccurate calculation of air conditioning energy consumption leads to inaccurate prediction of driving range.

[0005] Another objective of the first aspect of this invention is to further improve the accuracy of air conditioning energy consumption calculation.

[0006] The second aspect of this invention aims to provide a vehicle air conditioning energy consumption prediction system.

[0007] According to a first aspect of the present invention, the present invention provides a method for predicting the air conditioning energy consumption of a vehicle, comprising the following steps:

[0008] During vehicle operation, the system acquires the ambient temperature, air conditioning operation information, and predicted weather temperature, sunlight intensity, and sunlight altitude for a preset period of time.

[0009] The basic energy consumption value of the vehicle's air conditioning is calculated based on the ambient temperature and the air conditioning operation information.

[0010] The predicted energy consumption compensation value of the vehicle air conditioner within the preset future time period is calculated based on the predicted weather temperature, the predicted sunlight intensity value, and the predicted sunlight height value.

[0011] The final energy consumption of the vehicle's air conditioning system within the preset future time period is calculated based on the base energy consumption value and the predicted energy consumption compensation value.

[0012] Optionally, the step of calculating the basic energy consumption value of the vehicle's air conditioning based on the ambient temperature and the air conditioning operation information further includes the following steps:

[0013] Determine whether the vehicle's air conditioning is in a stable state based on the air conditioning operation information;

[0014] Calculate the transient energy consumption compensation value of the vehicle air conditioner when the vehicle air conditioner is not in a stable state;

[0015] The base energy consumption value is adjusted based on the transient energy consumption compensation value to obtain the adjusted base energy consumption value;

[0016] The final energy consumption of the vehicle's air conditioning system within the preset future time period is calculated based on the adjusted base energy consumption value and the predicted energy consumption compensation value.

[0017] Optionally, the step of calculating the transient energy consumption compensation value of the vehicle air conditioner when the vehicle air conditioner is not in a stable state specifically includes the following steps:

[0018] When the vehicle's air conditioning is not in a stable state, acquire vehicle information and the current sunlight intensity value;

[0019] The transient energy consumption compensation value of the vehicle's air conditioning is calculated based on the current sunlight intensity value, the vehicle information, and the air conditioning operation information.

[0020] Optionally, the air conditioning operation information includes target temperature, actual temperature, target air volume, actual air volume, and external circulation parameters, wherein the external circulation parameters include intake air volume and intake air temperature;

[0021] The vehicle information includes the interior space and interior materials.

[0022] Optionally, in the step of calculating the basic energy consumption value of the vehicle air conditioner based on the ambient temperature and the air conditioner operation information, the basic energy consumption value of the vehicle air conditioner is calculated based on the target temperature, the target air volume, and the ambient temperature.

[0023] Optionally, the step of determining whether the air conditioner is in a stable state based on the air conditioner operation information specifically includes the following steps:

[0024] Determine whether the temperature difference between the target temperature and the actual temperature is within a preset range;

[0025] If not, the vehicle's air conditioning is determined to be in an unstable state.

[0026] Optionally, the step of calculating the transient energy consumption compensation value of the vehicle's air conditioning based on the current sunlight intensity value, the vehicle information, and the air conditioning operation information specifically includes the following steps:

[0027] Calculate the in-vehicle temperature compensation value based on the actual air volume, the in-vehicle space, and the in-vehicle interior materials;

[0028] Calculate the vehicle's external air circulation compensation value based on the intake air volume and the intake air temperature;

[0029] The transient energy compensation value of the vehicle air conditioner is calculated based on the sunlight intensity value, the in-vehicle temperature compensation value, and the external circulation compensation value.

[0030] Optionally, the step of calculating the predicted energy consumption compensation value of the vehicle air conditioner within the predicted future time period based on the predicted weather temperature, the predicted sunlight intensity value, and the predicted sunlight altitude value further includes the following steps:

[0031] Determine whether the air conditioning operation information of the vehicle's air conditioning has changed:

[0032] If yes, then the base energy consumption value of the vehicle air conditioner is recalculated; if no, then the final energy consumption value of the vehicle air conditioner in the future preset time period is calculated based on the base energy consumption value and the predicted energy consumption compensation value.

[0033] Optionally, the step of calculating the final energy consumption value of the vehicle air conditioner within the preset future time period based on the basic energy consumption value and the predicted energy consumption compensation value further includes the following steps:

[0034] The vehicle's display screen shows the final energy consumption value and calculates the vehicle's driving range based on the final energy consumption value.

[0035] According to a second aspect of the present invention, the present invention also provides a vehicle air conditioning energy consumption prediction system, comprising:

[0036] The control module includes a memory and a processor. The memory stores a calculation program, which, when executed by the processor, is used to implement the aforementioned air conditioning energy consumption prediction method.

[0037] This invention first calculates the basic energy consumption value of the vehicle's air conditioning based on ambient temperature and air conditioning operation information. Then, it calculates the predicted energy consumption compensation value of the vehicle's air conditioning within a preset future time period based on predicted weather temperature, predicted sunlight intensity, and predicted sunlight altitude. Finally, it calculates the final energy consumption value of the vehicle's air conditioning within the preset future time period based on the basic energy consumption value and the predicted energy consumption compensation value. This technical solution predicts air conditioning energy consumption based on future weather changes, rather than directly extrapolating future time from current basic energy consumption values. Therefore, it improves the accuracy of air conditioning energy consumption calculation, thereby further improving the accuracy of vehicle range prediction.

[0038] Furthermore, this invention calculates the transient energy consumption compensation value of the vehicle's air conditioning system when the air conditioning is not in a stable state. Then, it adjusts the base energy consumption value based on the transient energy consumption compensation value to obtain an adjusted base energy consumption value. Finally, it calculates the final energy consumption value of the vehicle's air conditioning system within a preset future time period based on the adjusted base energy consumption value and the predicted energy consumption compensation value. The above technical solution considers that since the power of the vehicle's air conditioning system varies during operation, predicting the future energy consumption value based on the base energy consumption value is not very accurate. Therefore, when the vehicle is in an unstable state, it is necessary to consider adjusting the base energy consumption value using the transient energy consumption compensation value, thereby further improving the accuracy of the air conditioning energy consumption calculation.

[0039] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0040] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0041] Figure 1 This is a schematic flowchart of a vehicle air conditioning energy consumption prediction method according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic flowchart of a vehicle air conditioning energy consumption prediction method according to another embodiment of the present invention;

[0043] Figure 3 This is a schematic flowchart of a vehicle air conditioning energy consumption prediction method according to another embodiment of the present invention;

[0044] Figure 4 This is a schematic connection block diagram of a vehicle air conditioning energy consumption prediction system according to an embodiment of the present invention. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0046] Figure 1 This is a schematic flowchart of a vehicle air conditioning energy consumption prediction method according to an embodiment of the present invention. Figure 1 As shown, in one specific embodiment, the vehicle air conditioning energy consumption prediction method includes the following steps:

[0047] Step S100: During vehicle operation, acquire the ambient temperature of the vehicle, the air conditioning operation information of the vehicle, and the predicted weather temperature, predicted sunlight intensity and predicted sunlight altitude within a preset time period.

[0048] Step S200: Calculate the basic energy consumption value of the vehicle's air conditioning based on the ambient temperature and air conditioning operation information;

[0049] Step S300: Calculate the predicted energy consumption compensation value of the vehicle air conditioner within a preset time period based on the predicted weather temperature, predicted sunlight intensity value, and predicted sunlight height value.

[0050] Step S400: Calculate the final energy consumption value of the vehicle air conditioner within a preset time period based on the basic energy consumption value and the predicted energy consumption compensation value.

[0051] This embodiment predicts air conditioning energy consumption based on future weather changes, rather than directly extrapolating future time from current baseline energy consumption values. Therefore, it improves the accuracy of air conditioning energy consumption calculation, which in turn further improves the accuracy of vehicle range prediction.

[0052] In step S100, the future preset time period can be understood as 10 minutes, 20 minutes, 30 minutes, 40 minutes, 1 hour, etc. The predicted sunlight intensity value can be understood as predicting changes in sunlight based on weather forecasts. The predicted sunlight altitude value can be understood as the change in the sun's altitude; for example, in the afternoon, the sun's altitude decreases over time. In this embodiment, there is no energy consumption if the vehicle's air conditioning is not working.

[0053] In step S200, the basic energy consumption value is calculated based on the vehicle's current ambient temperature, the user's set temperature, and the set airflow.

[0054] In step S400, the predicted energy consumption compensation value for the vehicle's air conditioning is calculated based on forecasts of weather temperature changes, solar intensity, and altitude changes. For example, if the base energy consumption value per unit time is 2000W, and the predicted energy consumption compensation value for the next unit time is -50W, then the predicted energy consumption value for the next unit time is 1950W. If the predicted energy consumption compensation value for the next unit time is 50W, then the predicted energy consumption value for the next unit time is 2050W. Finally, the predicted energy consumption values ​​for the future preset time period are added together to obtain the final energy consumption value for the future preset time period.

[0055] Figure 2 This is a schematic flowchart of a vehicle air conditioning energy consumption prediction method according to another embodiment of the present invention. Figure 2As shown, in this embodiment, the following steps are included after step S200:

[0056] Step S210: Determine whether the vehicle's air conditioning is in a stable state based on the air conditioning operation information;

[0057] Step S220: Calculate the transient energy consumption compensation value of the vehicle air conditioner when the vehicle air conditioner is not in a stable state;

[0058] Step S230: Adjust the base energy consumption value according to the transient energy consumption compensation value to obtain the adjusted base energy consumption value;

[0059] Step S400': Calculate the final energy consumption value of the vehicle air conditioner within a preset time period based on the adjusted base energy consumption value and the predicted energy consumption compensation value.

[0060] This embodiment takes into account that since the power of the vehicle air conditioner changes during operation, it is not very accurate to predict the future energy consumption of the air conditioner based on the basic energy consumption value. Therefore, when the vehicle is in an unstable state, it is necessary to consider using the transient energy consumption compensation value to adjust the basic energy consumption value, thereby further improving the accuracy of the air conditioner energy consumption value calculation.

[0061] After step 210, if the vehicle air conditioning is in a stable state, it is not necessary to calculate the transient energy consumption compensation value of the vehicle air conditioning; the predicted energy consumption compensation value can be calculated directly.

[0062] In step S210, the vehicle's air conditioning system is determined to be in a stable state based on the temperature difference between the target temperature and the actual temperature in the air conditioning operation information.

[0063] In this embodiment, step S220 specifically includes the following steps:

[0064] Step 1: Obtain vehicle information and current sunlight intensity value when the vehicle's air conditioning is not in a stable state;

[0065] Step two involves calculating the transient energy consumption compensation value for the vehicle's air conditioning system based on the current sunlight intensity, vehicle information, and air conditioning operation information. Due to sunlight exposure, changes in the vehicle's interior temperature and the operation of the internal and external air circulation dampers cause fluctuations in the air conditioning's power output, leading to variations in air conditioning energy consumption. Therefore, this embodiment can adjust the vehicle's air conditioning's base energy consumption value in real time when the air conditioning is in an unstable state, thereby improving the accuracy of vehicle air conditioning energy consumption prediction.

[0066] In this embodiment, the air conditioning operation information includes target temperature, actual temperature, target airflow, actual airflow, and external circulation parameters. The external circulation parameters include intake air volume and intake air temperature. Vehicle information includes the vehicle interior space and interior materials. Here, the target temperature and target airflow can be understood as user-defined settings.

[0067] In this embodiment, the basic energy consumption value of the vehicle air conditioner is calculated based on the target temperature, target air volume, and ambient temperature in the step of calculating the basic energy consumption value of the vehicle air conditioner according to the ambient temperature and air conditioner operation information.

[0068] In this embodiment, step S210 specifically includes the following steps:

[0069] Step 3: Determine whether the temperature difference between the target temperature and the actual temperature is within the preset range; if not, proceed to step S212; here, the preset range is 1℃~2℃.

[0070] Step four determines that the vehicle's air conditioning is not in a stable state.

[0071] In this embodiment, step two specifically includes the following steps:

[0072] Step 5: Calculate the interior temperature compensation value based on the actual air volume, interior space, and interior materials.

[0073] Step 6: Calculate the vehicle's external air circulation compensation value based on the intake air volume and intake air temperature;

[0074] Step 7: Calculate the transient energy compensation value of the vehicle's air conditioning system based on the sunlight intensity value, the in-vehicle temperature compensation value, and the external circulation compensation value.

[0075] In essence, there are three compensation parameters used to calculate the transient energy compensation value: sunlight compensation, in-vehicle temperature compensation, and external air circulation compensation. Specifically, actual airflow, interior space, and interior materials can affect the in-vehicle temperature. For example, if the actual in-vehicle temperature is 25°C, and it needs to be lowered to 22°C, it indicates a difference between the actual and target temperatures. Therefore, cooling the in-vehicle air requires additional airflow, resulting in an in-vehicle temperature compensation value. When the vehicle is in external air circulation mode, the temperature of the intake air is related to the heat of the intake air. The intake air volume and temperature affect the in-vehicle temperature, generating an external air circulation compensation value. By using these three compensation parameters to compensate for the base energy consumption value, the vehicle's air conditioning energy consumption can be accurately calculated.

[0076] Figure 3 This is a schematic flowchart of a vehicle air conditioning energy consumption prediction method according to another embodiment of the present invention. Figure 3 As shown, the following steps are included after step S300:

[0077] Step S310: Determine if the vehicle air conditioning operation information has changed. If yes, return to step S200; otherwise, proceed to step S400. This embodiment is equivalent to maintaining the current calculation result and outputting it if the vehicle air conditioning parameter settings have not changed, thus ending the current round of calculation. If the vehicle air conditioning parameter settings have changed, it indicates that the basic energy consumption value has changed, requiring recalculation of the vehicle air conditioning's basic energy consumption value, thereby further improving the accuracy of vehicle air conditioning energy consumption prediction.

[0078] In this embodiment, the following steps are included after step S400:

[0079] In step S500, the vehicle's display screen is controlled to show the final energy consumption value, and the vehicle's driving range is calculated based on the final energy consumption value. This embodiment obtains the final energy consumption value of the vehicle's air conditioning at different future time intervals through a comprehensive calculation of the base energy consumption value and the compensated energy consumption value, and transmits this value to the display screen, allowing the display screen to show the final energy consumption value of the vehicle's air conditioning at multiple future times. After calculating the vehicle's driving range based on the final energy consumption value, the control module can also display the corresponding driving range for multiple future times on the display screen.

[0080] This embodiment starts with predicting vehicle air conditioning energy consumption. It predicts air conditioning energy consumption based on future weather changes, rather than directly extrapolating future time based on current baseline energy consumption values. This improves the accuracy of predicting future vehicle air conditioning energy consumption values, thereby improving the accuracy of predicting vehicle range.

[0081] Figure 4 This is a schematic connection block diagram of a vehicle air conditioning energy consumption prediction system 100 according to an embodiment of the present invention. Figure 4 As shown, in this embodiment, the vehicle's air conditioning energy consumption prediction system 100 includes a control module 10. The control module 10 includes a memory 11 and a processor 12. The memory 11 stores a calculation program, which, when executed by the processor 12, is used to implement the aforementioned air conditioning energy consumption prediction method. The processor 12 can be a central processing unit (CPU), a digital processing unit, etc. The processor 12 sends and receives data through a communication interface. The memory 11 is used to store the program executed by the processor 12. The memory 11 can be any medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, or it can be a combination of multiple memories 11. The aforementioned calculation program can be downloaded from a computer-readable storage medium to a corresponding computing / processing device or downloaded to a computer or external storage device via a network (e.g., the Internet, a local area network, a wide area network, and / or a wireless network).

[0082] For the purposes of this embodiment, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples of computer-readable media (a non-exhaustive list) include: an electrical connection (electronic device) having one or more wires, a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, a computer-readable medium can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory 11.

[0083] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A method for predicting the air conditioning energy consumption of a vehicle, characterized in that, Includes the following steps: During vehicle operation, the ambient temperature of the vehicle, the air conditioning operation information of the vehicle, and the predicted weather temperature, predicted sunlight intensity and predicted sunlight height within a preset time period are obtained. The air conditioning operation information includes target temperature, actual temperature, target air volume, actual air volume and external circulation parameters. The external circulation parameters include intake air volume and intake air temperature. The basic energy consumption value of the vehicle's air conditioning is calculated based on the ambient temperature and the air conditioning operation information. Determine whether the air conditioner is in a stable state based on the air conditioner's operating information; When the vehicle's air conditioning is not in a stable state, vehicle information and the current sunlight intensity value are acquired, wherein the vehicle information includes the vehicle's interior space and interior materials; The vehicle interior temperature compensation value is calculated based on the actual air volume, the vehicle interior space, and the vehicle interior materials. The vehicle external circulation compensation value is calculated based on the air intake volume and the air intake temperature. The transient energy consumption compensation value of the vehicle air conditioner is calculated based on the sunlight intensity value, the vehicle interior temperature compensation value, and the external circulation compensation value. The base energy consumption value is adjusted based on the transient energy consumption compensation value to obtain the adjusted base energy consumption value; The predicted energy consumption compensation value of the vehicle air conditioner within the preset future time period is calculated based on the predicted weather temperature, the predicted sunlight intensity value, and the predicted sunlight height value. The final energy consumption of the vehicle's air conditioning system within the preset future time period is calculated based on the adjusted base energy consumption value and the predicted energy consumption compensation value.

2. The air conditioning energy consumption prediction method according to claim 1, characterized in that, In the step of calculating the basic energy consumption value of the vehicle air conditioner based on the ambient temperature and the air conditioner operation information, the basic energy consumption value of the vehicle air conditioner is calculated based on the target temperature, the target air volume and the ambient temperature.

3. The air conditioning energy consumption prediction method according to claim 2, characterized in that, The step of determining whether the air conditioner is in a stable state based on the air conditioner's operating information specifically includes the following steps: Determine whether the temperature difference between the target temperature and the actual temperature is within a preset range; If not, the vehicle's air conditioning is determined to be in an unstable state.

4. The air conditioning energy consumption prediction method according to any one of claims 1-3, characterized in that, The step of calculating the predicted energy consumption compensation value of the vehicle air conditioner within the preset future time period based on the predicted weather temperature, the predicted sunlight intensity value, and the predicted sunlight altitude value, further includes the following steps: Determine whether the air conditioning operation information of the vehicle's air conditioning has changed: If yes, then the base energy consumption value of the vehicle air conditioner is recalculated; if no, then the final energy consumption value of the vehicle air conditioner in the future preset time period is calculated based on the adjusted base energy consumption value and the predicted energy consumption compensation value.

5. The air conditioning energy consumption prediction method according to claim 1, characterized in that, The step of calculating the final energy consumption of the vehicle's air conditioning system within the preset future time period based on the adjusted base energy consumption value and the predicted energy consumption compensation value further includes the following steps: The vehicle's display screen shows the final energy consumption value and calculates the vehicle's driving range based on the final energy consumption value.

6. A vehicle air conditioning energy consumption prediction system, characterized in that, include: A control module, comprising a memory and a processor, wherein the memory stores a calculation program, which, when executed by the processor, is used to implement the air conditioning energy consumption prediction method according to any one of claims 1-5.

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