Storage battery voltage detection method, device and equipment based on parking air conditioner and medium

Abstract

The invention relates to the technical field of vehicle-mounted batteries, particularly provides a storage battery voltage detection method, device and equipment based on a parking air conditioner and a medium, and aims to solve the problems that in the prior art, starting and stopping of a high-power load in the parking air conditioner cause violent fluctuation of current in a circuit, then the voltage detection value of a storage battery also fluctuates, and the voltage detection efficiency is affected. And the voltage detection precision of the storage battery is low. In order to achieve the purpose, the storage battery voltage detection method based on the parking air conditioner comprises the steps that first current, first voltage and a storage battery voltage detection value of an air conditioner controller are obtained; the power of the parking air conditioner is improved, and second current and second voltage of the air conditioner controller are obtained; obtaining first equivalent impedance according to the first current, the first voltage, the second current and the second voltage; and obtaining the storage battery voltage according to the first current, the storage battery voltage detection value and the first equivalent impedance.

Description

Technical Field

[0001] This application relates to the field of vehicle battery technology, specifically providing a method, device, equipment, and medium for detecting battery voltage based on a parking air conditioner. Background Technology

[0002] Large transport vehicles are typically equipped with parking air conditioners. After the vehicle stops, the parking air conditioner can be used to cool, heat, and ventilate, providing a comfortable resting environment for the driver and passengers.

[0003] Currently, parking air conditioners are powered by the vehicle's battery. During operation, the parking air conditioner needs to monitor the battery voltage in real time. When the battery voltage falls below a preset threshold, indicating insufficient battery power, the air conditioner shuts off to prevent the vehicle from failing to start due to a depleted battery. However, the starting and stopping of the high-power load in the parking air conditioner causes significant fluctuations in the current in the circuit, which in turn leads to fluctuations in the detected battery voltage, resulting in a technical problem of low battery voltage detection accuracy.

[0004] Accordingly, there is a need in the field for a new battery voltage detection method based on parking air conditioning to solve the above problems. Summary of the Invention

[0005] In order to overcome the above-mentioned defects, this application is made to provide a solution or at least a partial solution to the technical problem in the prior art where the start-up and shutdown of a high-power load in a parking air conditioner causes severe fluctuations in the current in the circuit, resulting in low accuracy of battery voltage detection.

[0006] In a first aspect, this application provides a battery voltage detection method based on a parking air conditioner, comprising:

[0007] Obtain the first current, first voltage, and battery voltage detection values ​​of the air conditioner controller;

[0008] Increase the power of the parking air conditioner and obtain the second current and second voltage of the air conditioner controller;

[0009] The first equivalent impedance is obtained based on the first current, the first voltage, the second current, and the second voltage;

[0010] The battery voltage is obtained based on the first current, the detected battery voltage value, and the first equivalent impedance.

[0011] In one technical solution of the above-mentioned battery voltage detection method based on parking air conditioner, the step of obtaining the first equivalent impedance based on the first current, the first voltage, the second current, and the second voltage includes:

[0012] The current difference is obtained based on the first current and the second current;

[0013] The voltage difference is obtained based on the first voltage and the second voltage;

[0014] The first equivalent impedance is obtained based on the current difference and the voltage difference.

[0015] In one technical solution of the above-mentioned battery voltage detection method based on parking air conditioning, the step of obtaining the battery voltage based on the first current, the first voltage, and the first equivalent impedance includes:

[0016] The equivalent voltage is obtained based on the first current and the first equivalent impedance;

[0017] The battery voltage is obtained based on the detected battery voltage value and the equivalent voltage.

[0018] In one technical solution of the above-mentioned battery voltage detection method based on parking air conditioner, after obtaining the first equivalent impedance based on the first current, the first voltage, the second current, and the second voltage, the method further includes:

[0019] Increase the power of the parking air conditioner and obtain the third current and third voltage of the air conditioner controller;

[0020] The second equivalent impedance is obtained based on the first current, the first voltage, the third current, and the third voltage;

[0021] Based on the first equivalent impedance and the second equivalent impedance, the optimal impedance estimate is obtained;

[0022] The battery voltage is obtained based on the first current, the detected battery voltage value, and the optimal impedance estimate.

[0023] In one technical solution of the above-mentioned battery voltage detection method based on parking air conditioner, after obtaining the battery voltage based on the first current, the detected battery voltage value, and the optimal impedance estimate, the method further includes:

[0024] Obtain the current increment after the compressor starts;

[0025] The voltage drop value is obtained based on the current increment and the optimal impedance estimate;

[0026] The supply voltage is obtained based on the voltage drop value and the battery voltage detection value;

[0027] If the power supply voltage is determined to be lower than the operating voltage of the air conditioning controller, then the power of the parking air conditioner is reduced.

[0028] In one technical solution of the above-mentioned battery voltage detection method based on parking air conditioner, obtaining the current increment after compressor startup includes:

[0029] A shutdown command is sent to the compressor so that the compressor can shut down according to the shutdown command;

[0030] Obtain the pre-start current of the parking air conditioner;

[0031] A start command is sent to the compressor so that the compressor can start according to the start command;

[0032] Obtain the starting current of the parking air conditioner;

[0033] The current increment after compressor startup is obtained based on the current before startup and the current after startup.

[0034] In one technical solution of the above-mentioned battery voltage detection method based on parking air conditioner, after determining that the supply voltage is less than the operating voltage of the air conditioner controller, the method further includes:

[0035] Send a start command to the engine to start the engine;

[0036] Once the engine is started, a battery charging command is sent to the engine so that the engine can charge the battery.

[0037] Secondly, this application provides a battery voltage detection device based on a parking air conditioner, comprising:

[0038] The acquisition module is used to acquire the first current, first voltage, and battery voltage detection values ​​of the air conditioner controller;

[0039] A power module is used to increase the power of the parking air conditioner and to obtain the second current and the second voltage of the air conditioner controller;

[0040] The analysis module is used to obtain the first equivalent impedance based on the first current, the first voltage, the second current, and the second voltage;

[0041] The analysis module is also used to obtain the battery voltage based on the first current, the detected battery voltage value, and the first equivalent impedance.

[0042] Thirdly, this application provides a battery voltage detection device based on a parking air conditioner, including at least one processor and a memory; wherein,

[0043] The memory stores computer-executed instructions;

[0044] The at least one processor executes computer execution instructions stored in the memory, causing the at least one processor to perform the method described in any one of the first aspects.

[0045] Fourthly, this application provides a computer-readable storage medium storing a plurality of program codes adapted to be loaded and run by a processor to perform the method described in any one of the first aspects.

[0046] This application provides a method, apparatus, device, and medium for detecting battery voltage based on a parking air conditioner. The method specifically includes: acquiring a first current, a first voltage, and a detected battery voltage value from the air conditioner controller; increasing the power of the parking air conditioner and acquiring a second current and a second voltage from the air conditioner controller; obtaining a first equivalent impedance based on the first current, the first voltage, the second current, and the second voltage; and obtaining the battery voltage based on the first current, the detected battery voltage value, and the first equivalent impedance, thereby improving the accuracy of battery voltage detection. Attached Figure Description

[0047] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:

[0048] Figure 1 This is a schematic diagram of the structure of a battery testing system provided in an embodiment of this application;

[0049] Figure 2 This is a flowchart illustrating a method for detecting battery voltage based on a parking air conditioner, as provided in this application.

[0050] Figure 3 This is a flowchart illustrating a second embodiment of a battery voltage detection method based on a parking air conditioner provided in this application.

[0051] Figure 4 This is a flowchart illustrating a third embodiment of a battery voltage detection method based on a parking air conditioner provided in this application.

[0052] Figure 5 This is a flowchart illustrating Embodiment 4 of a battery voltage detection method based on a parking air conditioner provided in this application.

[0053] Figure 6 This is a flowchart illustrating Embodiment 5 of a battery voltage detection method based on a parking air conditioner provided in this application.

[0054] Figure 7This is a flowchart illustrating a sixth embodiment of a battery voltage detection method based on a parking air conditioner provided in this application.

[0055] Figure 8 This is a flowchart illustrating Embodiment Seven of a battery voltage detection method based on a parking air conditioner provided in this application.

[0056] Figure 9 A schematic diagram of a battery voltage detection device based on a parking air conditioner provided in this application embodiment;

[0057] Figure 10 This is a schematic diagram of a battery voltage detection device based on a parking air conditioner, provided in an embodiment of this application.

[0058] List of reference numerals in the attached diagram:

[0059] 11: Data acquisition module; 12: Load control module; 13: Impedance calculation module; 14: Voltage compensation module; 21: Acquisition module; 22: Analysis module; 23: Sterilization module; 31: Processor; 32: Memory. Detailed Implementation

[0060] Some embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0061] In the description of this application, "module" and "processor" can include hardware, software, or a combination of both. A module can include hardware circuitry, various suitable sensors, communication ports, memory, and can also include software components, such as program code, or a combination of software and hardware. A processor can be a central processing unit, microprocessor, image processor, digital signal processor, or any other suitable processor. The processor has data and / or signal processing capabilities. The processor can be implemented in software, in hardware, or a combination of both. Non-transitory computer-readable storage media includes any suitable medium capable of storing program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, etc. The term "A and / or B" means all possible combinations of A and B, such as only A, only B, or A and B. The terms "at least one A or B" or "at least one of A and B" have a similar meaning to "A and / or B" and can include only A, only B, or A and B. The singular terms "a" or "this" can also include plural forms.

[0062] In existing technologies, the air conditioning controller of the vehicle's air conditioning system is used to collect the battery voltage. However, during the operation of the parking air conditioning system, the starting, stopping, and speed change of high-power loads such as the compressor and fan can cause drastic fluctuations in current, which in turn cause fluctuations in the collected battery voltage. When the collected battery voltage is too low, the system may misjudge and stop the air conditioning from operating. Furthermore, even if the same model of parking air conditioning system is installed in the same vehicle, the voltage detection characteristics may differ, making it impossible to guarantee the consistency and reliability of the products. All of these factors contribute to the technical problem of inaccurate battery voltage collection.

[0063] Based on this, in order to solve the above-mentioned technical problems, the technical concept of this application is to provide a new method for detecting the voltage of a parking air conditioner, so as to improve the accuracy of the voltage detection of the battery.

[0064] Figure 1 This is a schematic diagram of the structure of a battery detection system provided in an embodiment of this application. Figure 1 As shown, the battery detection system includes: a data acquisition module 11, a load control module 12, an impedance calculation module 13, and a voltage compensation module 14. The data acquisition module 11 acquires the first current, first voltage, and battery voltage detection values ​​of the air conditioning controller. The load control module 12 increases the power of the parking air conditioner and acquires the second current and second voltage of the air conditioning controller. The impedance calculation module 13 calculates the first equivalent impedance based on the first current, first voltage, second current, and second voltage. The voltage compensation module 14 calculates the battery voltage based on the first current, the battery voltage detection value, and the first equivalent impedance.

[0065] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0066] Figure 2 This is a schematic flowchart of an embodiment of a battery voltage detection method based on a parking air conditioner provided in this application. Figure 2 As shown, specifically, the method includes:

[0067] Step S201: Obtain the first current, first voltage, and battery voltage detection values ​​of the air conditioner controller.

[0068] In this embodiment, a current sensor is provided on the power supply circuit of the air conditioner controller to obtain a first current, a voltage sensor is provided at both ends of the air conditioner controller to obtain a first voltage, and a voltage sensor is provided at both ends of the controller and the battery to obtain the battery voltage detection value.

[0069] In this embodiment, the current and voltage of the air conditioner controller are monitored and acquired. When the current and voltage are determined to be stable, a first current and a first voltage are acquired.

[0070] Step S202: Increase the power of the parking air conditioner and obtain the second current and second voltage from the air conditioner controller.

[0071] In this embodiment, the power of the parking air conditioner can be increased by increasing the fan speed or compressor frequency in the parking air conditioner. Then, the current and voltage flowing through the air conditioner controller are monitored. Once the current and voltage stabilize, the second current and the second voltage are recorded.

[0072] In this embodiment, the power of the parking air conditioner is increased, which means that the parking air conditioner generates a state change with a significant current step. The current and voltage are sampled at high frequency to obtain a current dataset and a voltage dataset. The second voltage and the second current obtained from the current dataset and the voltage dataset after the parking air conditioner increases its power are obtained from the voltage dataset and the current dataset.

[0073] Step S203: Obtain the first equivalent impedance based on the first current, the first voltage, the second current, and the second voltage.

[0074] In this embodiment, a first resistance value is obtained based on the ratio of a first voltage to a first current, a second resistance value is obtained based on the ratio of a second voltage to a second current, and a first equivalent impedance is obtained based on the difference between the second resistance value and the first resistance value.

[0075] Step S204: Obtain the battery voltage based on the first current, the detected battery voltage value, and the first equivalent impedance.

[0076] In this embodiment, the impedance voltage is obtained by multiplying the first current and the first equivalent impedance; the battery voltage is obtained by the difference between the detected battery voltage and the impedance voltage.

[0077] In this embodiment, the first current, first voltage, and battery voltage detection values ​​of the air conditioning controller are obtained; the power of the parking air conditioner is increased, and the second current and second voltage of the air conditioning controller are obtained; a first equivalent impedance is obtained based on the first current, first voltage, second current, and second voltage; and the battery voltage is obtained based on the first current, battery voltage detection value, and first equivalent impedance. Compared with the low accuracy of existing parking air conditioners in detecting battery voltage, this application improves the accuracy of battery voltage detection by obtaining the first current, first voltage, second current, and second voltage before and after increasing the power of the parking air conditioner, obtaining the first equivalent impedance based on the first current, first voltage, second current, and second voltage, and obtaining the battery voltage based on the first current, battery voltage detection value, and first equivalent impedance.

[0078] Figure 3 This is a flowchart illustrating a second embodiment of a battery voltage detection method based on a parking air conditioner provided in this application. Based on the above embodiments, as... Figure 3 As shown, the specific implementation of step S203 includes:

[0079] Step S301: Obtain the current difference based on the first current and the second current.

[0080] In this embodiment, the second current is subtracted from the first current to obtain the current difference.

[0081] Step S302: Obtain the voltage difference based on the first voltage and the second voltage.

[0082] In this embodiment, the voltage difference is obtained by subtracting the first voltage from the second voltage.

[0083] Step S303: Obtain the first equivalent impedance based on the current difference and voltage difference.

[0084] In this embodiment, the ratio of voltage difference to current difference is the first equivalent impedance.

[0085] In this embodiment, according to formula 1:

[0086] R_line=(V2-V1) / (I2-I1) (1)

[0087] The first equivalent impedance R_line is obtained. Where V2 is the second voltage, V1 is the first voltage, I2 is the second current, and I1 is the first current.

[0088] In this embodiment, the current difference is obtained based on the first current and the second current; the voltage difference is obtained based on the first voltage and the second voltage; and the first equivalent impedance is obtained based on the current difference and the voltage difference, thereby improving the accuracy of the equivalent impedance.

[0089] Figure 4 This is a flowchart illustrating a third embodiment of a battery voltage detection method based on a parking air conditioner provided in this application. Based on the above embodiments, as... Figure 4 As shown, one specific implementation of step S204 includes:

[0090] Step S401: Obtain the equivalent voltage based on the first current and the first equivalent impedance.

[0091] In this embodiment, the product of the first current and the first equivalent impedance is the equivalent voltage.

[0092] Step S402: Obtain the battery voltage based on the detected battery voltage value and the equivalent voltage.

[0093] In this embodiment, the sum of the detected battery voltage and the equivalent voltage is the battery voltage.

[0094] In this embodiment, the equivalent voltage is obtained based on the first current and the first equivalent impedance; the battery voltage is obtained based on the battery voltage detection value and the equivalent voltage, thereby improving the accuracy of the battery voltage detection.

[0095] Figure 5 This is a flowchart illustrating Embodiment 4 of a battery voltage detection method based on a parking air conditioner provided in this application. Based on the above embodiments, as... Figure 5 As shown, specifically, after step S203, the method further includes:

[0096] Step S501: Increase the power of the parking air conditioner and obtain the third current and third voltage of the air conditioner controller.

[0097] In this embodiment, the power of the parking air conditioner is increased again, and then the current and voltage of the air conditioner controller are monitored. Once the current and voltage are determined to be stable, a third current and a third voltage are obtained.

[0098] Step S502: Obtain the second equivalent impedance based on the first current, the first voltage, the third current, and the third voltage.

[0099] In this embodiment, the current difference is obtained based on the difference between the first current and the third current, the voltage difference is obtained based on the first voltage and the third voltage, and the second equivalent impedance is obtained based on the ratio of the voltage difference to the current difference.

[0100] Step S503: Obtain the optimal impedance estimate based on the first equivalent impedance and the second equivalent impedance.

[0101] In this embodiment, the average value of the first equivalent impedance and the second equivalent impedance is calculated, and this average value is the optimal impedance estimate.

[0102] In this embodiment, the Kalman filter algorithm can also be used to process the first equivalent impedance and the second equivalent impedance to obtain the optimal impedance estimate.

[0103] In this embodiment, steps S501 and S502 can be executed multiple times to obtain multiple current and voltage values.

[0104] Step S504: Obtain the battery voltage based on the first current, the detected battery voltage value, and the optimal impedance estimate.

[0105] In this embodiment, the impedance voltage is obtained based on the first current and the optimal impedance estimate, and the sum of the impedance voltage and the battery voltage detection value is the battery voltage.

[0106] In this embodiment, the power of the parking air conditioner is increased, and the third current and third voltage of the air conditioner controller are obtained; the second equivalent impedance is obtained based on the first current, first voltage, third current, and third voltage; the optimal impedance estimate is obtained based on the first equivalent impedance and the second equivalent impedance; the battery voltage is obtained based on the first current, the battery voltage detection value, and the optimal impedance estimate. By increasing the power of the parking air conditioner multiple times, multiple sets of current and voltage values ​​are obtained, thereby obtaining the accurate voltage of the impedance based on the multiple sets of current and voltage values, and thus improving the detection accuracy of the battery voltage.

[0107] Figure 6 This is a flowchart illustrating Embodiment 5 of a battery voltage detection method based on a parking air conditioner provided in this application. Based on the above embodiments, as... Figure 6 As shown, specifically, after step S504, the method further includes:

[0108] Step S601: Obtain the current increment after the compressor starts.

[0109] In this embodiment, the current input to the parking air conditioner is monitored. Before the compressor of the parking air conditioner starts, the input current before the compressor starts is recorded. After the compressor of the parking air conditioner starts and the current input to the compressor stabilizes, the input current after the compressor starts is recorded. The difference between the input current after the compressor starts and the input current before the compressor starts is the current increment.

[0110] Step S602: Obtain the voltage drop value based on the current increment and the optimal impedance estimate.

[0111] In this embodiment, the product of the current increment and the optimal impedance estimate is the voltage drop value.

[0112] Step S603: Obtain the power supply voltage based on the voltage drop value and the battery voltage detection value.

[0113] In this embodiment, the supply voltage is obtained by subtracting the voltage drop value from the battery voltage detection value.

[0114] Step S604: If the power supply voltage is determined to be lower than the operating voltage of the air conditioning controller, then reduce the power of the parking air conditioner.

[0115] In this embodiment, if the power supply voltage is less than the operating voltage of the air conditioning controller, the battery is insufficient to drive the parking air conditioner. In this case, it is necessary to reduce the power of the parking air conditioner to keep it running.

[0116] In this embodiment, the current increment after the compressor starts is obtained; the voltage drop value is obtained based on the current increment and the optimal impedance estimate; the power supply voltage is obtained based on the voltage drop value and the battery voltage detection value; if the power supply voltage is determined to be less than the operating voltage of the air conditioning controller, the power of the parking air conditioner is reduced, thereby ensuring the continuous and stable operation of the parking air conditioner.

[0117] Figure 7 This is a flowchart illustrating a sixth embodiment of a battery voltage detection method based on a parking air conditioner provided in this application. Based on the above embodiments, as... Figure 7 As shown, the specific implementation of step S601 includes:

[0118] Step S701: Send a shutdown command to the compressor so that the compressor can shut down according to the shutdown command.

[0119] In this embodiment, after a shutdown command is sent to the compressor, if the compressor is in the on state, the compressor will stop running after receiving the shutdown command; if the compressor is in the off state, the compressor will remain off after receiving the shutdown command.

[0120] Step S702: Obtain the pre-start current through the parking air conditioner.

[0121] In this embodiment, after the compressor is turned off, the current passing through the parking air conditioner is monitored. Once the current stabilizes, the stable current is the current passing through the parking air conditioner before startup.

[0122] Step S703: Send a start command to the compressor so that the compressor can start according to the start command.

[0123] Step S704: Obtain the starting current through the parking air conditioner.

[0124] In this embodiment, after the compressor starts, the current passing through the parking air conditioner is monitored. Once the current stabilizes, the stable current is the current passing through the parking air conditioner after startup.

[0125] Step S705: Based on the current before startup and the current after startup, obtain the current increment after the compressor starts.

[0126] In this embodiment, the difference between the current after startup and the current before startup is the current increment after the compressor starts.

[0127] In this embodiment, a shutdown command is sent to the compressor so that the compressor can shut down according to the shutdown command; the pre-start current of the parking air conditioner is obtained; an start command is sent to the compressor so that the compressor can start according to the start command; the post-start current of the parking air conditioner is obtained; and the current increment after the compressor starts is obtained based on the pre-start current and the post-start current.

[0128] Figure 8 This is a flowchart illustrating Embodiment Seven of a battery voltage detection method based on a parking air conditioner provided in this application. Based on the above embodiments, as... Figure 8 As shown, specifically, after determining in step S604 that the power supply voltage is less than the operating voltage of the air conditioner controller, the method further includes:

[0129] Step S801: Send a start command to the engine to start the engine.

[0130] Step S802: After confirming that the engine has started, send a battery charging command to the engine so that the engine can charge the battery.

[0131] In this embodiment, after the battery supply voltage decreases, that is, after the battery power decreases, in order to maintain the normal operation of the parking air conditioner, the engine needs to be started, and after the engine is confirmed to be started, the engine charges the battery.

[0132] In this embodiment, a start command is sent to the engine to start it; after the engine is started, a battery charging command is sent to the engine to charge the battery, thereby ensuring the normal operation of the parking air conditioner.

[0133] It should be noted that although the steps in the above embodiments are described in a specific order, those skilled in the art will understand that in order to achieve the effect of this application, different steps do not necessarily have to be executed in such an order. They can be executed simultaneously (in parallel) or in other orders, and these variations are all within the scope of protection of this application.

[0134] Furthermore, this application also provides a battery voltage detection device based on a parking air conditioner.

[0135] Figure 9 This is a schematic diagram of a battery voltage detection device based on a parking air conditioner, provided as an embodiment of this application. Figure 9As shown, the battery voltage detection device based on a parking air conditioner in this embodiment mainly includes an acquisition module 21, a power module 22, and an analysis module 23. In some embodiments, one or more of the acquisition module 21, power module 22, and analysis module 23 can be combined into a single module. In some embodiments, the acquisition module 21 can be configured to acquire a first current, a first voltage, and a battery voltage detection value from the air conditioner controller. The power module 22 can be configured to increase the power of the parking air conditioner and acquire a second current and a second voltage from the air conditioner controller. The analysis module 23 can be configured to obtain a first equivalent impedance based on the first current, the first voltage, the second current, and the second voltage. The analysis module 23 can also be configured to obtain the battery voltage based on the first current, the battery voltage detection value, and the first equivalent impedance.

[0136] The aforementioned battery voltage detection device based on the parking air conditioner is used to perform... Figures 2 to 8 The embodiments of the battery voltage detection method based on the parking air conditioner shown are similar in technical principle, technical problem solved and technical effect. Those skilled in the art can clearly understand that, for the sake of convenience and brevity, the specific working process and related descriptions of the battery voltage detection device based on the parking air conditioner can be referred to the content described in the embodiments of the battery voltage detection method based on the parking air conditioner, and will not be repeated here.

[0137] Those skilled in the art will understand that all or part of the processes in the method of the above-described embodiment can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable storage medium can include any entity or device capable of carrying the computer program code, a medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory, a random access memory, an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0138] Furthermore, this application also provides a battery voltage detection device based on a parking air conditioner.

[0139] Figure 10 This is a schematic diagram of a battery voltage detection device based on a parking air conditioner, provided as an embodiment of this application. Figure 10As shown, the battery voltage detection device based on the parking air conditioner includes a processor 31 and a memory 32. The memory 32 can be configured to store a program for executing the battery voltage detection method based on the parking air conditioner described in the above method embodiments. The processor 31 can be configured to execute the program stored in the memory, which includes, but is not limited to, a program for executing the battery voltage detection method based on the parking air conditioner described in the above method embodiments. For ease of explanation, only the parts related to the embodiments of this application are shown. For specific technical details not disclosed, please refer to the method section of the embodiments of this application. The battery voltage detection device based on the parking air conditioner can be a control device device comprising various electronic devices.

[0140] Furthermore, this application also provides a computer-readable storage medium. In one embodiment of the computer-readable storage medium according to this application, the computer-readable storage medium can be configured to store a program that executes the battery voltage detection method based on a parking air conditioner according to the above-described method embodiments. This program can be loaded and run by a processor to implement the above-described battery voltage detection method based on a parking air conditioner. For ease of explanation, only the parts related to the embodiments of this application are shown; for specific technical details not disclosed, please refer to the method section of the embodiments of this application. The computer-readable storage medium can be a storage device comprising various electronic devices. Optionally, in the embodiments of this application, the computer-readable storage medium is a non-transitory computer-readable storage medium.

[0141] Furthermore, it should be understood that since the various modules are only provided to illustrate the functional units of the device described in this application, the physical devices corresponding to these modules may be the processor itself, or a part of the processor's software, hardware, or a combination of both. Therefore, the number of modules shown in the figures is merely illustrative.

[0142] Those skilled in the art will understand that the various modules in the device can be adaptively split or combined. Such splitting or combining of specific modules will not cause the technical solution to deviate from the principles of this application; therefore, the technical solutions after splitting or combining will fall within the protection scope of this application.

[0143] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, 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 scope of protection of this application.

Claims

1. A method for detecting battery voltage based on a parking air conditioner, characterized in that, include: Obtain the first current, first voltage, and battery voltage detection values ​​of the air conditioner controller; Increase the power of the parking air conditioner and obtain the second current and second voltage of the air conditioner controller; The first equivalent impedance is obtained based on the first current, the first voltage, the second current, and the second voltage; The battery voltage is obtained based on the first current, the detected battery voltage value, and the first equivalent impedance.

2. The method according to claim 1, characterized in that, The step of obtaining the first equivalent impedance based on the first current, the first voltage, the second current, and the second voltage includes: The current difference is obtained based on the first current and the second current; The voltage difference is obtained based on the first voltage and the second voltage; The first equivalent impedance is obtained based on the current difference and the voltage difference.

3. The method according to claim 1 or 2, characterized in that, The step of obtaining the battery voltage based on the first current, the first voltage, and the first equivalent impedance includes: The equivalent voltage is obtained based on the first current and the first equivalent impedance; The battery voltage is obtained based on the detected battery voltage value and the equivalent voltage.

4. The method according to claim 1, characterized in that, After obtaining the first equivalent impedance based on the first current, the first voltage, the second current, and the second voltage, the method further includes: Increase the power of the parking air conditioner and obtain the third current and third voltage of the air conditioner controller; The second equivalent impedance is obtained based on the first current, the first voltage, the third current, and the third voltage; Based on the first equivalent impedance and the second equivalent impedance, the optimal impedance estimate is obtained; The battery voltage is obtained based on the first current, the detected battery voltage value, and the optimal impedance estimate.

5. The method according to claim 4, characterized in that, After obtaining the battery voltage based on the first current, the detected battery voltage value, and the optimal impedance estimate, the method further includes: Obtain the current increment after the compressor starts; The voltage drop value is obtained based on the current increment and the optimal impedance estimate; The supply voltage is obtained based on the voltage drop value and the battery voltage detection value; If the power supply voltage is determined to be lower than the operating voltage of the air conditioning controller, then the power of the parking air conditioner is reduced.

6. The method according to claim 5, characterized in that, The step of obtaining the current increment after the compressor starts includes: A shutdown command is sent to the compressor so that the compressor can shut down according to the shutdown command; Obtain the pre-start current of the parking air conditioner; A start command is sent to the compressor so that the compressor can start according to the start command; Obtain the starting current of the parking air conditioner; The current increment after compressor startup is obtained based on the current before startup and the current after startup.

7. The method according to any one of claims 5 or 6, characterized in that, After determining that the power supply voltage is less than the operating voltage of the air conditioner controller, the method further includes: Send a start command to the engine to start the engine; Once the engine is started, a battery charging command is sent to the engine so that the engine can charge the battery.

8. A battery voltage detection device based on a parking air conditioner, characterized in that, include: The acquisition module is used to acquire the first current, first voltage, and battery voltage detection values ​​of the air conditioner controller; A power module is used to increase the power of the parking air conditioner and to obtain the second current and the second voltage of the air conditioner controller; The analysis module is used to obtain the first equivalent impedance based on the first current, the first voltage, the second current, and the second voltage; The analysis module is also used to obtain the battery voltage based on the first current, the detected battery voltage value, and the first equivalent impedance.

9. A battery voltage detection device based on a parking air conditioner, comprising at least one processor and a memory; wherein, The memory stores computer-executed instructions; The at least one processor executes computer execution instructions stored in the memory, causing the at least one processor to perform the method of any one of claims 1 to 7.

10. A computer-readable storage medium storing a plurality of program codes, characterized in that, The program code is adapted to be loaded and run by a processor to perform the method of any one of claims 1 to 7.

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