Battery residual capacity detection method, device and storage medium

Abstract

This application relates to a method, apparatus, and storage medium for detecting remaining battery capacity. The method includes: responding to an information identification operation of an on-board battery tag, determining the battery's full-charge time based on the result of the information identification operation; acquiring the current time, and determining the current battery placement time based on the battery's full-charge time and the current time; acquiring a target battery voltage, and determining the current battery voltage based on the target battery voltage, the current battery placement time, and a battery voltage decay function; the battery voltage decay function characterizes the correspondence between the battery placement time and the battery voltage decay value; the target battery voltage is the battery voltage at the battery's full-charge time; and determining the current remaining battery capacity based on the current battery voltage. This method can obtain accurate remaining battery capacity.

Description

Technical Field

[0001] This application relates to the field of vehicle battery testing technology, and in particular to a method, apparatus and storage medium for detecting remaining battery power. Background Technology

[0002] The rapid development of new energy technologies has brought battery-powered devices into the public eye. In practical applications, battery manufacturers typically provide the relationship between the initial voltage and the remaining battery capacity after the battery has been fully charged and left idle for one hour. The vehicle terminal then reads the initial voltage to calculate the remaining battery capacity.

[0003] However, if a fully charged battery is left uncharged for an extended period, the initial voltage provided by the battery manufacturer will not match the actual remaining battery capacity, resulting in inaccurate calculations of the remaining battery capacity by the vehicle's onboard terminal. Summary of the Invention

[0004] Therefore, it is necessary to provide a method, apparatus, and storage medium for detecting the remaining battery power that can accurately obtain the remaining battery power, in order to address the above-mentioned technical problems.

[0005] Firstly, a method for detecting remaining battery power is provided, the method comprising:

[0006] In response to the information identification operation of the vehicle battery tag, the battery full charge time is determined based on the result of the information identification operation;

[0007] Obtain the current time and determine the current battery placement time based on the battery's full charge time and the current time;

[0008] Obtain the target battery voltage, and determine the current battery voltage based on the target battery voltage, the current battery placement time, and the battery voltage decay function; the battery voltage decay function is used to characterize the correspondence between the battery placement time and the battery voltage decay value; the target battery voltage is the battery voltage at the moment the battery is fully charged;

[0009] Determine the remaining battery power based on the current battery voltage.

[0010] In one embodiment, determining the current remaining battery power based on the current battery voltage includes: calculating the current remaining battery power based on the current battery voltage and a battery power function; the battery power function is used to characterize the correspondence between the battery voltage and the remaining battery power.

[0011] In one embodiment, the method further includes: storing a battery voltage decay function and a battery charge function in response to performing a function import operation; the function import operation is used to import the battery voltage decay function and the battery charge function into the vehicle terminal.

[0012] In one embodiment, the battery voltage decay function is determined based on the result of a feature analysis of the placement time of a preset number of experimental batteries and the corresponding voltage decay value of the experimental batteries.

[0013] In one embodiment, determining the current battery voltage based on the target battery voltage, the current battery placement time, and the battery voltage decay function includes: calculating the current battery voltage decay value based on the current placement time and the battery voltage decay function; and calculating the current battery voltage based on the target battery voltage and the current battery voltage decay value.

[0014] In one embodiment, determining the battery full charge time based on the result of the information identification operation includes: determining the vehicle battery information recorded on the vehicle battery tag based on the result of the information identification operation; and extracting information from the vehicle battery information to obtain the battery full charge time.

[0015] In one embodiment, the vehicle-mounted terminal is electrically connected to a satellite positioning device; obtaining the current time includes: obtaining the current time collected in real time by the satellite positioning device.

[0016] In one embodiment, the vehicle terminal is a vehicle TBOX.

[0017] Secondly, a battery remaining power detection device is applied to an in-vehicle terminal. The device includes a full charge time acquisition module, a placement time calculation module, a battery voltage calculation module, and a battery power calculation module.

[0018] The full charge time acquisition module is used to respond to the information recognition operation of the vehicle battery tag and determine the battery full charge time based on the result of the information recognition operation.

[0019] The placement time calculation module is used to obtain the current time and determine the current battery placement time based on the battery's full charge time and the current time.

[0020] The battery voltage calculation module is used to obtain the target battery voltage and determine the current battery voltage based on the target battery voltage, the current battery placement time, and the battery voltage decay function. The battery voltage decay function is used to characterize the correspondence between the battery placement time and the battery voltage decay value. The target battery voltage is the battery voltage at the moment the battery is fully charged.

[0021] The battery power calculation module is used to determine the remaining battery power based on the current battery voltage.

[0022] Thirdly, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the steps of any of the methods described in the above method embodiments.

[0023] Based on this, the aforementioned battery remaining power detection method, device, and storage medium, in response to the execution of an information identification operation on the vehicle battery tag, determine the battery's full charge time based on the result of the information identification operation; then, acquire the current time and determine the current battery placement time based on the battery's full charge time and the current time; next, acquire the target battery voltage and determine the current battery voltage based on the target battery voltage, the current battery placement time, and the battery voltage decay function; wherein, the battery voltage decay function is used to characterize the correspondence between the battery placement time and the battery voltage decay value; the target battery voltage is the battery voltage at the time the battery is fully charged; finally, determine the current battery remaining power based on the current battery voltage, thereby improving the accuracy of battery remaining power detection and avoiding the discrepancy between the initial voltage provided by the battery manufacturer and the actual battery remaining power caused by the battery being left uncharged for a long time after being fully charged. Attached Figure Description

[0024] Figure 1 This is an application environment diagram of a battery remaining power detection method in one embodiment;

[0025] Figure 2 This is a schematic diagram of the first process of a battery remaining power detection method in one embodiment;

[0026] Figure 3 This is a flowchart illustrating the steps for determining the battery full charge time based on the result of an information identification operation in one embodiment.

[0027] Figure 4 This is a flowchart illustrating the steps of determining the current battery voltage based on the target battery voltage, the current battery placement time, and the battery voltage decay function in one embodiment.

[0028] Figure 5 This is a schematic diagram of the second process of a battery remaining power detection method in one embodiment;

[0029] Figure 6 This is a structural block diagram of a battery remaining power detection device in one embodiment;

[0030] Figure 7 This is an internal structure diagram of the vehicle-mounted terminal in one embodiment;

[0031] Figure 8 This is an internal structural diagram of an on-board battery power detection system in one embodiment. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0035] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0036] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0037] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0038] The battery remaining power detection method provided in this application can be applied to, for example... Figure 1 In the application environment shown, the vehicle terminal 102 communicates with the server 104 via a network. The vehicle terminal 102 can be, but is not limited to, various personal computers, laptops, smartphones, tablets, and portable wearable devices. The server 104 can be a standalone server or a server cluster consisting of multiple servers.

[0039] In one embodiment, such as Figure 2 As shown, a method for detecting remaining battery power is provided, which can be applied to... Figure 1The following steps are used as an example of the vehicle-mounted terminal 102, including steps 202 to 208.

[0040] Step 202: In response to performing the information identification operation of the vehicle battery tag, determine the battery full charge time based on the result of the information identification operation.

[0041] The vehicle battery tag carries information about the vehicle battery. Specifically, the vehicle battery can be, but is not limited to, a nickel-metal hydride battery. The vehicle battery information includes at least the battery's full charge time. The full charge time refers to the moment when the battery is fully charged before leaving the factory. The fully charged state indicates that the battery's state of charge is 1 or a preset threshold, which can be, but is not limited to, greater than or equal to 0.9. Additionally, the vehicle battery tag also includes one or more of the following: battery manufacturer, battery voltage, battery capacity, battery charging speed requirements, battery weight, battery model, and battery product code.

[0042] In one specific example, the vehicle battery label can be either a vehicle battery barcode or a vehicle battery QR code. This is just a specific example; in actual applications, the settings can be flexibly configured according to user needs, and no restrictions are imposed here.

[0043] It is understandable that the vehicle terminal can be electrically connected to the information identification device; the information identification device can perform information identification operations on the vehicle battery tag, so that when the vehicle terminal device recognizes the information identification operation performed on the vehicle battery tag, it can determine the battery full charge time based on the result of the information identification operation.

[0044] In one embodiment, such as Figure 3 As shown, the process of determining the battery full charge time based on the results of the information recognition operation includes steps 301 and 302.

[0045] Step 301: Determine the vehicle battery information recorded on the vehicle battery tag based on the result of the information recognition operation.

[0046] Step 302: Extract information from the vehicle battery to obtain the battery's full charge time.

[0047] Understandably, the vehicle terminal can determine the vehicle battery information recorded on the vehicle battery tag based on the results of the information recognition operation; then, by extracting the vehicle battery information, the time when the battery is fully charged can be obtained.

[0048] In this embodiment, the vehicle battery information recorded on the vehicle battery tag is determined based on the result of the information recognition operation; then, the vehicle battery information is extracted to obtain the accurate battery full charge time, which improves the convenience of battery remaining power detection.

[0049] In one embodiment, the vehicle terminal may be a vehicle TBOX.

[0050] In a specific example, the vehicle terminal can be, but is not limited to, a vehicle battery box (TBOX), and the information recognition device can be, but is not limited to, a barcode scanner. The barcode scanner is electrically connected to the microcontroller unit (MCU) of the vehicle TBOX. When the barcode scanner performs the information recognition operation on the vehicle battery tag, the MCU of the vehicle TBOX can recognize that the barcode scanner is performing the information recognition operation on the vehicle battery tag. The above is only a specific example; in actual applications, it can be flexibly set according to user needs, and there are no restrictions here.

[0051] Step 204: Obtain the current time and determine the current battery placement time based on the battery charging time and the current time.

[0052] Understandably, the vehicle terminal can obtain the current time and calculate the difference between the time when the battery is fully charged and the current time, thus obtaining the battery placement time. This allows us to understand the time difference between the time when the vehicle battery is fully charged and the current time by using the battery placement time.

[0053] In one embodiment, the vehicle-mounted terminal is electrically connected to a satellite positioning device; the above-mentioned acquisition of the current time includes: acquiring the current time collected in real time by the satellite positioning device.

[0054] Specifically, the satellite positioning equipment collects the current time in real time, and the vehicle-mounted terminal can then obtain the current time collected by the satellite positioning equipment, thereby enabling the vehicle-mounted terminal to obtain the current time in a timely manner. Furthermore, the satellite positioning equipment can be, but is not limited to, GNSS equipment.

[0055] In this embodiment, by electrically connecting the vehicle terminal to the satellite positioning device and obtaining the current time collected in real time by the satellite positioning device, the calculation of the current battery placement time is improved, which in turn improves the detection efficiency and accuracy of the battery remaining power detection method.

[0056] Step 206: Obtain the target battery voltage and determine the current battery voltage based on the target battery voltage, the current battery placement time, and the battery voltage decay function.

[0057] The battery voltage decay function characterizes the relationship between battery placement time and battery voltage decay value, with the target battery voltage being the battery voltage at the moment of full charge. Specifically, a battery voltage acquisition device can be used to acquire the battery voltage at the moment of full charge, i.e., the target battery voltage. The vehicle terminal is electrically connected to the battery voltage acquisition device to obtain the target battery voltage acquired by the device. Based on the target battery voltage, the current battery placement time, and the battery voltage decay function, the current battery voltage can be determined. The above is merely a specific example; in actual applications, settings can be flexibly configured according to user needs, and no restrictions are imposed here.

[0058] In one embodiment, the battery voltage decay function is determined based on the result of a feature analysis of the placement time of a preset number of experimental batteries and the corresponding voltage decay value of the experimental batteries.

[0059] In a specific example, the battery voltage decay function is not a linear function; it varies depending on the brand, capacity, and model of the vehicle battery. The steps to determine the battery voltage decay function include: obtaining the placement time and corresponding voltage decay values ​​of a predetermined number of experimental batteries; performing feature analysis on the placement time and voltage decay values ​​of each experimental battery to obtain the feature analysis results; and processing the feature analysis results to obtain the battery voltage decay function.

[0060] In one embodiment, such as Figure 4 As shown, the current battery voltage is determined based on the target battery voltage, the current battery placement time, and the battery voltage decay function, including steps 401 and 402.

[0061] Step 401: Calculate the current battery voltage decay value based on the current placement time and battery voltage decay function;

[0062] Step 402: Calculate the current battery voltage based on the target battery voltage and the current battery voltage decay value.

[0063] Understandably, the vehicle terminal can input the current placement time into the battery voltage decay function for calculation to obtain the current battery voltage decay value; then, by calculating the difference between the target battery voltage and the current battery voltage decay value, the current battery voltage can be obtained.

[0064] In a specific example, the current battery voltage decay value is determined based on the following expression for the battery voltage decay function:

[0065]

[0066] in, t0 represents the current battery voltage decay value, and t0 represents the current placement time. The above is just a specific example. In actual applications, the settings can be flexibly adjusted according to user needs, and no restrictions are imposed here.

[0067] In this embodiment, the current battery voltage decay value is obtained by calculating based on the current placement time and the battery voltage decay function. This calculation accurately determines the current battery voltage decay value, thereby improving the accuracy of the current battery voltage and thus improving the accuracy of the remaining battery power detection.

[0068] Step 208: Determine the remaining battery power based on the current battery voltage.

[0069] Specifically, the vehicle terminal determines the current battery voltage based on the target battery voltage, the current battery placement time, and the battery voltage decay function. This allows for accurate calculation of the remaining battery capacity, improving the accuracy of remaining battery capacity detection and preventing discrepancies between the initial voltage provided by the battery manufacturer and the actual remaining battery capacity if the battery is left uncharged for an extended period after being fully charged.

[0070] Based on this, the aforementioned battery remaining power detection method determines the battery's full charge time by responding to the information identification operation of the vehicle battery tag and determining the battery's current storage time based on the identification result. Then, it acquires the current time and determines the current battery storage time based on the full charge time and the current time. Next, it acquires the target battery voltage and determines the current battery voltage based on the target battery voltage, the current battery storage time, and the battery voltage decay function. The battery voltage decay function characterizes the correspondence between the battery storage time and the battery voltage decay value. The target battery voltage is the battery voltage at the full charge time. Finally, it determines the current remaining battery power based on the current battery voltage. This improves the accuracy of battery remaining power detection and avoids discrepancies between the initial voltage provided by the battery manufacturer and the actual remaining battery power if the battery is left uncharged for an extended period after full charge. Furthermore, since vehicles typically alert the user when the remaining battery power falls below a threshold and report a fault, this method improves the accuracy of battery remaining power detection while also preventing false alarms caused by inaccurate battery remaining power monitoring.

[0071] In one embodiment, determining the remaining battery power based on the current battery voltage includes: calculating the remaining battery power based on the current battery voltage and a battery power function.

[0072] The battery power function is used to characterize the relationship between battery voltage and remaining battery power. Specifically, the vehicle terminal pre-stores the battery power function. The vehicle terminal inputs the current battery voltage into the battery power function for calculation to obtain the current remaining battery power.

[0073] In this embodiment, the accurate remaining battery power can be obtained by calculating based on the current battery voltage and battery power function, which improves the accuracy and convenience of battery power detection.

[0074] In one embodiment, such as Figure 5 As shown, the above method also includes step 200.

[0075] Step 200: In response to the function import operation, store the battery voltage decay function and the battery charge function.

[0076] The function import operation is used to import the battery voltage decay function and battery level function into the vehicle terminal. The vehicle terminal is electrically connected to a function programming device, which can import the battery voltage decay function and battery level function into the vehicle terminal when performing the function import operation; the vehicle terminal can store the battery voltage decay function and battery level function when it recognizes the execution of the function import operation.

[0077] In this embodiment, by performing a function import operation to store the battery voltage decay function and the battery charge function, the convenience of the battery remaining charge detection process is improved.

[0078] It should be understood that, although Figure 2-5 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 2-5 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but may be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0079] In one embodiment, such as Figure 6 As shown, a battery remaining power detection device is provided for use in an in-vehicle terminal. The device includes a full charge time acquisition module 610, a placement time calculation module 620, a battery voltage calculation module 630, and a battery power calculation module 640.

[0080] The battery charging time acquisition module 610 is used to determine the battery charging time based on the information recognition operation of the vehicle battery tag. The placement time calculation module 620 is used to acquire the current time and determine the current battery placement time based on the battery charging time and the current time. The battery voltage calculation module 630 is used to acquire the target battery voltage and determine the current battery voltage based on the target battery voltage, the current battery placement time, and the battery voltage decay function; the battery voltage decay function is used to characterize the correspondence between the battery placement time and the battery voltage decay value; the target battery voltage is the battery voltage at the battery charging time. The battery capacity calculation module 640 is used to determine the remaining battery capacity based on the current battery voltage.

[0081] In one embodiment, the battery power calculation module 640 includes a power calculation unit.

[0082] The power calculation unit is used to calculate the current remaining power of the battery based on the current battery voltage and the battery power function; the battery power function is used to characterize the correspondence between the battery voltage and the remaining battery power.

[0083] In one embodiment, the battery remaining power detection device further includes a function import module.

[0084] The function import module is used to store the battery voltage decay function and the battery power function in response to the execution of the function import operation; the function import operation is used to import the battery voltage decay function and the battery power function into the vehicle terminal.

[0085] In one embodiment, the battery voltage decay function is determined based on the result of a feature analysis of the placement time of a preset number of experimental batteries and the corresponding voltage decay value of the experimental batteries.

[0086] In one embodiment, the battery voltage calculation module 630 includes an attenuation value calculation unit and a battery voltage calculation unit.

[0087] The attenuation value calculation unit is used to calculate the current battery voltage attenuation value based on the current placement time and the battery voltage attenuation function; the battery voltage calculation unit is used to calculate the current battery voltage based on the target battery voltage and the current battery voltage attenuation value.

[0088] In one embodiment, the full-time acquisition module 610 includes a result determination unit and an information extraction unit.

[0089] The result determination unit is used to determine the vehicle battery information recorded on the vehicle battery tag based on the result of the information recognition operation; the information extraction unit is used to extract information from the vehicle battery information to obtain the battery full charge time.

[0090] In one embodiment, the vehicle-mounted terminal is electrically connected to a satellite positioning device; the placement time calculation module 620 includes a time acquisition unit.

[0091] The time acquisition unit is used to acquire the current time collected in real time by the satellite positioning equipment.

[0092] In one embodiment, the vehicle terminal is a vehicle TBOX.

[0093] Specific limitations regarding the battery remaining power detection device can be found in the limitations of the battery remaining power detection method described above, and will not be repeated here. Each module in the aforementioned battery remaining power detection device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0094] In one embodiment, a vehicle-mounted terminal is provided. This vehicle-mounted terminal can be a terminal, and its internal structure diagram can be as follows: Figure 7 As shown, the vehicle-mounted terminal includes a processor, memory, network interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface is used to communicate with external terminals via a network. When the computer program is executed by the processor, it implements a method for detecting remaining battery power. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the vehicle-mounted terminal casing, or an external keyboard, touchpad, or mouse.

[0095] Those skilled in the art will understand that Figure 7 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the vehicle terminal to which the present application is applied. A specific vehicle terminal may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0096] In one embodiment, a vehicle-mounted terminal is provided, the vehicle-mounted terminal including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of any of the methods in the above method embodiments.

[0097] In one embodiment, the vehicle terminal may be a vehicle TBOX.

[0098] In one embodiment, such as Figure 8 As shown, an on-board battery power detection system is provided, which includes an on-board TBOX 810, a satellite positioning device 820, and an information recognition device 830.

[0099] The vehicle-mounted TBOX810 is electrically connected to a satellite positioning device 820 and an information identification device 830; the satellite positioning device 820 is used to collect the current time in real time; and the information identification device 830 is used to perform information identification operations on the vehicle-mounted battery tag.

[0100] In one embodiment, the satellite positioning device is a GNSS device, the information identification device is a barcode scanner, and the vehicle battery label is a vehicle battery barcode or a battery QR code.

[0101] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the steps of any of the methods described in the above method embodiments.

[0102] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAM bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for detecting remaining battery power, characterized in that, Applied to vehicle-mounted terminals, the method includes: In response to performing an information identification operation on the vehicle battery tag, the battery full charge time is determined based on the result of the information identification operation; the vehicle battery tag is used to carry vehicle battery information; the vehicle battery information includes at least the battery full charge time; the battery full charge time refers to the time corresponding to the battery being fully charged before leaving the factory; Obtain the current time and determine the current battery placement time based on the battery full charge time and the current time; The target battery voltage is obtained, and the current battery voltage is determined based on the target battery voltage, the current battery placement time, and the battery voltage decay function; the battery voltage decay function is used to characterize the correspondence between the battery placement time and the battery voltage decay value; the target battery voltage is the battery voltage at the moment the battery is fully charged. The remaining battery power is determined based on the current battery voltage.

2. The method according to claim 1, characterized in that, Determining the remaining battery power based on the current battery voltage includes: The remaining battery capacity is calculated based on the current battery voltage and the battery capacity function; the battery capacity function is used to characterize the correspondence between battery voltage and remaining battery capacity.

3. The method according to claim 2, characterized in that, The method further includes: In response to the execution of the function import operation, the battery voltage decay function and the battery power function are stored; the function import operation is used to import the battery voltage decay function and the battery power function into the vehicle terminal.

4. The method according to claim 1, characterized in that, The battery voltage decay function is determined based on the result of characteristic analysis of the placement time of a preset number of experimental batteries and the corresponding voltage decay value of the experimental batteries.

5. The method according to claim 1, characterized in that, The step of determining the current battery voltage based on the target battery voltage, the current battery placement time, and the battery voltage decay function includes: The current battery voltage decay value is calculated based on the current battery placement time and the battery voltage decay function. The current battery voltage is calculated based on the target battery voltage and the current battery voltage decay value.

6. The method according to claim 1, characterized in that, Determining the battery full charge time based on the result of the information recognition operation includes: The vehicle battery information recorded on the vehicle battery tag is determined based on the result of the information recognition operation. The information of the vehicle battery is extracted to obtain the time when the battery is fully charged.

7. The method according to claim 1, characterized in that, The vehicle-mounted terminal is electrically connected to a satellite positioning device; obtaining the current time includes: Obtain the current time as collected in real time by the satellite positioning device.

8. The method according to claim 1, characterized in that, The vehicle-mounted terminal is a vehicle-mounted TBOX.

9. A battery remaining power detection device, characterized in that, The device, applied to an in-vehicle terminal, includes: A full charge time acquisition module is used to respond to an information recognition operation on the vehicle battery tag and determine the battery full charge time based on the result of the information recognition operation; the vehicle battery tag is used to carry vehicle battery information; the vehicle battery information includes at least the battery full charge time; the battery full charge time refers to the time when the battery is fully charged before leaving the factory. The placement time calculation module is used to obtain the current time and determine the current battery placement time based on the battery full charge time and the current time. A battery voltage calculation module is used to obtain the target battery voltage and determine the current battery voltage based on the target battery voltage, the current battery placement time, and a battery voltage decay function; the battery voltage decay function is used to characterize the correspondence between the battery placement time and the battery voltage decay value; the target battery voltage is the battery voltage at the moment the battery is fully charged; The battery power calculation module is used to determine the remaining battery power based on the current battery voltage.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

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