Battery power determination method, device, apparatus, and storage medium

Abstract

This invention discloses a battery power assessment method, apparatus, device, and storage medium, belonging to the field of battery power detection technology. The battery power assessment method includes the following steps: obtaining the actual internal resistance of the battery; obtaining the theoretical internal resistance required for the battery's current output voltage to decrease from the first battery voltage when the system is in minimum power consumption mode to the system's minimum operating voltage; and determining whether the current battery power meets the system's power supply requirements based on the actual internal resistance and the theoretical internal resistance, thereby achieving an accurate and stable assessment of whether the battery power meets the system's power supply requirements.

Description

Technical Field

[0001] This invention relates to the field of battery power detection technology, and in particular to a method, apparatus, device, and storage medium for determining battery power. Background Technology

[0002] Batteries, as portable, convenient, and flexible energy devices, are widely used in industry, power, transportation, and electronic products, especially portable electronic products, which are almost inseparable from batteries. Batteries are consumables; the longer a battery is used, the lower its charge becomes. When the charge drops to a certain level, it cannot support system operation, leading to system malfunctions and crashes. Therefore, it is necessary to check whether the current battery charge meets the system's power requirements.

[0003] Currently, the most common methods for detecting battery capacity include the voltage method, the discharge curve comparison method, and battery capacity testing equipment. The voltage method determines battery capacity by comparing the open-circuit voltage with the nominal voltage. Its drawback is that a battery with insufficient capacity may develop an artificially high voltage after being left unused for a period of time, leading to misjudgment. The discharge curve comparison method obtains a discharge curve by discharging the battery under a fixed load, and then determines the battery capacity by measuring the battery voltage and discharge current against the coordinates of the discharge curve. Its drawback is that the system may not operate continuously at the same current; it may vary, or operate intermittently, making capacity assessment difficult and inaccurate. Battery capacity testing equipment requires additional equipment, is cumbersome to operate, and wastes resources. Therefore, none of the above battery capacity measurement methods can accurately and reliably determine whether the battery capacity meets the system's power supply requirements. Summary of the Invention

[0004] The main objective of this invention is to provide a method, apparatus, device, and storage medium for determining battery power, aiming to achieve accurate and stable determination of whether the battery power meets the system's power supply requirements.

[0005] To achieve the above objectives, the present invention provides a method for determining battery power, the method comprising:

[0006] Obtain the actual internal resistance of the battery;

[0007] The theoretical internal resistance of the battery required to reduce the output voltage of the battery from the first battery voltage when the system is in minimum power consumption mode to the minimum operating voltage of the system;

[0008] Based on the actual battery internal resistance and the theoretical battery internal resistance, determine whether the current battery power is sufficient to power the system.

[0009] Optionally, obtaining the actual internal resistance of the battery, wherein the current output voltage of the battery is a first battery voltage, includes:

[0010] Obtain the first battery voltage when the system is in minimum power consumption mode, and the second battery voltage when the system is in load mode;

[0011] The actual internal resistance of the battery is obtained based on the first battery voltage and the second battery voltage.

[0012] Optionally, the system further includes a low-dropout linear regulator connected in parallel with the battery. The step of obtaining the actual battery internal resistance based on the first battery voltage and the second battery voltage includes:

[0013] The first system power conversion efficiency is obtained based on the output voltage of the low-dropout linear regulator and the voltage of the second battery.

[0014] The actual battery internal resistance is obtained based on the first battery voltage, the second battery voltage, the first system power conversion efficiency, the total system power in minimum power consumption mode, and the total system power in load mode.

[0015] Optionally, the system further includes a low-dropout linear regulator connected in parallel with the battery, and the step of obtaining the actual internal resistance of the battery includes:

[0016] Obtain the actual internal resistance and electromotive force of the battery.

[0017] Optionally, obtaining the theoretical battery internal resistance required for the battery's output voltage to decrease from the first battery voltage when the system is in minimum power consumption mode to the system's minimum operating voltage includes:

[0018] The second system power conversion efficiency is obtained based on the output voltage of the low dropout linear regulator and the minimum operating voltage of the system.

[0019] The theoretical internal resistance of the battery is obtained based on the battery electromotive force, the minimum operating voltage, the power conversion efficiency of the second system, and the maximum total power of the system.

[0020] Optionally, determining whether the current battery charge is sufficient for system power supply based on the actual battery internal resistance and the theoretical battery internal resistance includes:

[0021] Determine whether the actual internal resistance of the battery is less than the theoretical internal resistance of the battery;

[0022] If the actual internal resistance of the battery is less than the theoretical internal resistance of the battery, then the current battery charge is sufficient to power the system.

[0023] Optionally, after determining whether the actual battery internal resistance is less than the theoretical battery internal resistance, the method further includes:

[0024] If the actual battery internal resistance is greater than or equal to the theoretical battery internal resistance, then the current battery power is insufficient to power the system.

[0025] Furthermore, to achieve the above objectives, the present invention also provides a battery power determination device, characterized in that the device comprises:

[0026] The actual internal resistance acquisition module is used to acquire the actual internal resistance of the battery.

[0027] The theoretical internal resistance acquisition module is used to obtain the theoretical internal resistance of the battery required for the output voltage of the battery to decrease from the first battery voltage when the system is in the minimum power consumption mode to the minimum operating voltage of the system.

[0028] The battery power determination module is used to determine whether the current battery power is sufficient to supply power to the system based on the actual battery internal resistance and the theoretical battery internal resistance.

[0029] The present invention also provides a battery power determination device, comprising: a processor, a memory, and a battery power determination program stored in the memory, wherein when the battery power determination program is executed by the processor, it implements the steps described in any possible implementation of the first aspect.

[0030] The present invention also provides a computer-readable storage medium storing a battery power determination program thereon, wherein the battery power determination program, when executed by a processor, implements the steps described in any possible implementation of the first aspect.

[0031] This invention proposes a method for determining battery power. By obtaining the actual internal resistance of the battery and comparing it with the theoretical internal resistance required to reduce the battery's current output voltage from the first battery voltage to the system's minimum operating voltage, the method determines whether the battery's output voltage will fall below the system's minimum operating voltage during system operation, thereby judging whether the current battery power meets the system's power supply requirements. In other words, this invention uses the internal resistance method to determine the current battery power, improving the accuracy and stability of the data, thus achieving an accurate and stable determination of whether the battery power meets the system's power supply requirements. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the battery power determination device for the hardware operating environment involved in the present invention.

[0033] Figure 2 This is a flowchart illustrating the first embodiment of the battery power determination method of the present invention.

[0034] Figure 3 This is a flowchart illustrating the second embodiment of the battery power determination method of the present invention.

[0035] Figure 4 This is a flowchart illustrating the third embodiment of the battery power determination method of the present invention.

[0036] Figure 5 This is a schematic diagram of the functional modules of the battery power determination device involved in this invention.

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0039] Existing battery power detection methods, such as voltage measurement, discharge curve comparison, and battery capacity testing, may indicate that the battery is capable of operating under light loads but not under heavy loads. This is because a higher battery output current leads to a greater voltage drop, resulting in a lower output voltage. When the battery output voltage falls below the system's minimum operating voltage, it can cause system malfunctions or even shutdown. Therefore, these battery power detection methods cannot accurately and reliably determine whether the battery capacity is sufficient to power the system.

[0040] To address this, the present invention proposes a battery power determination method. By obtaining the actual internal resistance of the battery and the theoretical internal resistance required for the current output voltage of the battery to decrease from the first battery voltage to the minimum operating voltage of the system, the method determines whether the current battery circuit meets the system power supply requirements based on the actual internal resistance and the theoretical internal resistance, thereby achieving an accurate and stable determination of whether the battery power meets the system power supply requirements.

[0041] like Figure 1As shown, the battery power determination device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to establish communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0042] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the terminal and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0043] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include a control system, a data acquisition module, a data calculation module, a data judgment module, and a battery power judgment program.

[0044] like Figure 1 As shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the server of the present invention can be set in the server, and the server calls the battery power judgment program stored in the memory 1005 through the processor 1001 and executes the battery power judgment method provided in the embodiment of the present invention.

[0045] Based on, but not limited to, the above hardware structure, this invention provides a first embodiment of a battery power determination method. (Refer to...) Figure 2 , Figure 2 This is a schematic flowchart of the first embodiment of the battery power determination method of the present invention.

[0046] Reference Figure 2 The first embodiment of the present invention provides a battery power determination method, the method comprising:

[0047] S100: Obtain the actual internal resistance of the battery;

[0048] It should be noted that the main body executing the method in this embodiment is a circuit control system. This circuit control system can be a circuit control system set inside a computer or a circuit control system set inside an electronic device containing the circuit. It is used to detect the battery power in the circuit and determine whether the system power supply is sufficient.

[0049] Understandably, all batteries have internal resistance, which is connected in series in the circuit. Therefore, the battery's internal resistance will divide the voltage of the system supply, causing a decrease in the battery's output voltage. The actual battery internal resistance is the actual internal resistance that exists inside the power supply battery. The current output voltage is the voltage output by the power supply battery at the current time period. It can be detected by the circuit control system or by the user measuring the voltage across the power supply battery and uploading it to a computer. This computer is equipped with a data upload button; when the user presses the upload button, the voltage data is transmitted to the circuit control system.

[0050] The circuit control system obtains the current output voltage of the power supply battery in the circuit and calculates the actual internal resistance of the power supply battery based on the output voltage. For example, the user can manually measure the voltage across the power supply battery in the current circuit and input the measured voltage into the computer, so that the computer transmits the voltage to the circuit control system for storage. The circuit control system calculates the actual internal resistance of the power supply battery based on the voltage.

[0051] S200: The theoretical internal resistance of the battery required for the battery output voltage to decrease from the first battery voltage when the system is in minimum power consumption mode to the minimum operating voltage of the system.

[0052] The minimum power consumption mode can be the system sleep mode. When the system is in sleep mode, all loads are in a non-working state, that is, they are not loaded into the system. Therefore, the system supply current is extremely low, and the circuit voltage can be approximated as the open circuit voltage. The circuit voltage at this time is taken as the first battery voltage and denoted as VS.

[0053] The minimum operating voltage is the minimum voltage at which all loads in the system can maintain normal operation. Based on the first battery voltage and the minimum operating voltage, the circuit control system calculates the theoretical battery internal resistance at which the output voltage equals the minimum operating voltage.

[0054] Specifically, the relationship between the battery's output voltage and its internal resistance is shown in Formula 1.

[0055] V = EI * r

[0056] Where E is the battery open-circuit voltage, V is the battery output voltage, I is the system operating current, and r is the battery internal resistance.

[0057] Therefore, when the system operating current is constant, the battery's current output voltage decreases as the battery's internal resistance increases. Thus, in the same system, different batteries may have output voltages that fail to reach the system's minimum operating voltage due to excessive internal resistance, leading to system malfunctions or even shutdown. The system's minimum operating voltage is the minimum voltage required to support the normal operation of all loads within the system. Since the battery's output voltage is negatively correlated with its internal resistance, the battery's internal resistance at the system's minimum operating voltage is the maximum internal resistance required for normal system power supply—the theoretical internal resistance. At this point, the voltage drop caused by the theoretical internal resistance results in an output voltage that just meets the system's operational requirements. Therefore, by further comparing the theoretical and actual internal resistances, it can be determined whether the current battery supply meets the system's power requirements.

[0058] S300: Determines whether the current battery power is sufficient for system power supply based on the actual battery internal resistance and the theoretical battery internal resistance;

[0059] The circuit control system compares the actual internal resistance of the battery with the theoretical internal resistance, and determines whether the current battery power is sufficient to power the system based on the comparison result.

[0060] In this embodiment, by calculating the battery's internal resistance and then calculating whether the voltage output by the battery after the voltage drop due to the battery's internal resistance meets the minimum operating voltage of the system, it is determined whether the battery power meets the system's power supply requirements. This method can be applied to battery power detection between different batteries and different systems without the need for additional battery power detection equipment.

[0061] This invention obtains the actual internal resistance of the power supply battery and calculates the theoretical internal resistance required for the battery output voltage to be the minimum operating voltage. The actual internal resistance is compared with the theoretical internal resistance, and the comparison result is used to determine whether the current power supply battery capacity meets the system power supply requirements. By using the internal resistance method, an accurate and stable determination of whether the battery capacity meets the system power supply requirements is achieved.

[0062] In this embodiment, the actual battery internal resistance is compared with the theoretical battery internal resistance, and the comparison result is used to determine whether the current battery power is sufficient for system power supply. The internal resistance method is used to determine whether the battery power is sufficient for system power supply. This solves the problem that when the voltage method is used to determine whether the current battery power is sufficient for system power supply, the battery with insufficient power will generate a falsely high voltage after being left for a period of time, which will cause misjudgment when comparing the open circuit voltage and the nominal voltage. This method can more accurately determine whether the battery power is sufficient for system power supply and reduce the occurrence of misjudgment.

[0063] In this embodiment, the current battery internal resistance is measured and compared with the theoretical battery internal resistance. This solves the problem of inaccurate and unstable current judgment when using the discharge curve comparison method, as the system may not always operate at the same current. By comparing the internal resistance of the power supply battery, the accuracy and stability of the judgment are improved. Furthermore, this embodiment only requires detecting the battery internal resistance; no additional equipment is needed to detect the battery charge. This solves the problem of cost waste and operational complexity caused by using additional equipment when using charge detection devices, simplifying the operation, shortening the battery charge detection time, and improving the efficiency of battery charge detection.

[0064] Reference Figure 3 , Figure 3 This is a flowchart illustrating the second embodiment of the battery power determination method of the present invention, based on the above. Figure 2 The illustrated embodiment presents a second embodiment of the battery power method of the present invention.

[0065] In an embodiment, step S100 in the first embodiment includes:

[0066] S101: Obtain the first battery voltage when the system is in minimum power consumption mode, and the second battery voltage when the system is in load mode;

[0067] After the system's built-in load is turned on, the system is in load mode. This load mode is based on the minimum power consumption mode. The system is in the mode when the built-in load is turned on. The built-in load can be a resistor, an LED, or a circuit module with relatively stable power consumption. The battery voltage measured in load mode is the second battery voltage, denoted as VL.

[0068] The battery voltage data can be obtained by measuring it through the circuit control system or by manually measuring the battery voltage data by the user. The data is then input into the computer, and the computer sends the battery voltage data to the circuit control system.

[0069] Understandably, this step involves acquiring the first battery voltage in the minimum power consumption mode and the second battery voltage in the load mode. For example, the user can control the circuit control system to adjust the current operating mode to the minimum power consumption mode and use voltage measuring tools such as a voltmeter to measure the battery voltage at this time, record the first battery voltage, load the built-in resistor in the circuit control system into the circuit, and measure the voltage across the battery again to obtain the second battery voltage. The first battery voltage and the second battery voltage are then input into the computer, and the computer sends the first battery voltage and the second battery voltage data to the circuit control system.

[0070] S102: The power conversion efficiency of the first system is obtained based on the output voltage of the low dropout linear regulator and the voltage of the second battery.

[0071] A low-dropout linear regulator is a type of linear regulator that is connected in parallel with a battery. It subtracts excess voltage from the applied input voltage to produce a regulated output voltage, denoted as V. OUT .

[0072] Let the power conversion efficiency of the first system be denoted as η1. If the system power supply module is a DC-DC switching converter, the power conversion efficiency η1 of the first system can be found in the DC-DC switching converter datasheet; if the system power supply module is a low-dropout linear regulator, the power conversion efficiency η1 of the first system can be expressed by the formula:

[0073] η1=V L / V OUT , and perform calculations.

[0074] S103: Based on the first battery voltage, the second battery voltage, the first system power conversion efficiency, the total system power in minimum power consumption mode, and the total system power when the system is in load mode, the actual battery internal resistance is obtained;

[0075] The total system power is determined by the product of the voltage across the battery and the total current in the system circuit. Since the voltage in the minimum power consumption mode can be considered as the open-circuit voltage and the circuit current is extremely small, the total system power in the minimum power consumption mode is also extremely small. Let the total system power in the minimum power consumption mode be denoted as P. S .

[0076] If the load of the system circuit and the battery can be connected in series, then the total power of the system circuit in load mode is equal to the sum of the power of each electrical component. Let P be the total power of the system in load mode. L .

[0077] Let the actual internal resistance of the battery be denoted as r. L ,but

[0078]

[0079] Where r L V represents the actual battery internal resistance, η1 represents the first system power conversion efficiency, and V represents the actual battery internal resistance. S V is the voltage of the first battery. L P is the voltage of the second battery. L P represents the total system power when the system is in load mode. S This represents the total system power in the minimum power consumption mode.

[0080] S104: Obtain the actual internal resistance and electromotive force of the battery;

[0081] The electromotive force (EMF) of a battery is the limiting value of the potential difference between two electrodes when the battery current approaches zero. The battery EMF is denoted as V. E ,but

[0082]

[0083] Where V E r is the electromotive force of the battery. L V represents the actual battery internal resistance, η1 represents the first system power conversion efficiency, and V represents the actual battery internal resistance. L P is the voltage of the second battery. L This represents the total system power when the system is in load mode.

[0084] S201: The second system power conversion efficiency is obtained based on the output voltage of the low dropout linear regulator and the minimum operating voltage of the system;

[0085] The minimum operating voltage is the minimum voltage required to support system operation, denoted as V. OFF The power conversion efficiency of the second system is denoted as η2. If the system power supply module is a DC-DC switching converter, the power conversion efficiency η2 of the second system can be found in the DC-DC switching converter's datasheet; if the system power supply module is a low-dropout linear regulator, the power conversion efficiency η2 of the second system can be expressed using the formula η2 = V OFF / V OUT , and perform calculations.

[0086] S202: The theoretical battery internal resistance is obtained based on the battery electromotive force, minimum operating voltage, power conversion efficiency of the second system, and the maximum total power of the system.

[0087] The system's maximum total power is the sum of the maximum power of all components in the system per unit time, denoted as P. M .

[0088] The theoretical internal resistance of a battery is the internal resistance of the battery that, when the system operates in maximum power mode, satisfies the condition that the output voltage equals the system's minimum operating voltage. This internal resistance is denoted as r. OFF ,but

[0089]

[0090] Where r OFF V is the theoretical internal resistance of the battery, η2 is the power conversion efficiency of the second system, and V E V is the electromotive force of the battery. OFF P is the minimum operating voltage of the system. M This represents the maximum total power of the system.

[0091] This embodiment obtains the first battery voltage under minimum power consumption mode and the second battery voltage under load mode. Based on the first system power conversion efficiency, the second system power conversion efficiency, the total system power under load mode, the minimum system operating voltage, and the maximum system power, the actual battery internal resistance and the theoretical battery internal resistance are obtained. By detecting the battery internal resistance, it is further determined whether the current battery power meets the system power supply requirements, thus improving stability and accuracy.

[0092] Reference Figure 4 Based on the above Figure 2 The embodiments shown present a third embodiment of the battery power determination method of the present invention.

[0093] In this embodiment, step S300 includes:

[0094] S301: Determine whether the actual battery internal resistance is less than the theoretical battery internal resistance;

[0095] S302: If the actual battery internal resistance is less than the theoretical battery internal resistance, then the current battery charge is sufficient to supply power to the system.

[0096] S303: If the actual battery internal resistance is greater than or equal to the theoretical battery internal resistance, then the current battery power is insufficient to supply power to the system.

[0097] It is important to understand that the battery generates a voltage drop due to the voltage division caused by its internal resistance. Therefore, we need to determine whether the output voltage after the voltage drop caused by the battery's internal resistance meets the minimum operating voltage of the system, and further determine whether the current power supply battery meets the system's power supply requirements.

[0098] When the detected internal resistance of the battery is greater than or equal to the theoretical internal resistance of the battery, the battery voltage will be equal to or lower than the minimum operating voltage of the system when the system is operating in the maximum power mode. Therefore, it is determined that the battery power is insufficient to power the system.

[0099] When the internal resistance of the battery is detected to be less than the theoretical internal resistance of the battery, the battery voltage will not be equal to or lower than the minimum operating voltage of the system when the system is operating in the maximum power mode. Therefore, it is determined that the battery has sufficient power to power the system.

[0100] In this embodiment, the actual internal resistance of the power supply battery is compared with its theoretical internal resistance at the minimum operating voltage. If the actual internal resistance is greater than or equal to the theoretical internal resistance, the battery is determined not to meet system power requirements; if the actual internal resistance is less than the theoretical internal resistance, the battery is determined to meet system power requirements. By comparing the battery's internal resistance with its theoretical resistance at the minimum voltage, it is determined whether the output voltage will be lower than the system's minimum operating voltage when the battery is in the system's maximum power mode, thus achieving an accurate and stable determination of whether the battery capacity meets system power requirements.

[0101] See Figure 5 , Figure 5 This is a schematic diagram of a battery power determination device provided by the present invention. The device specifically includes:

[0102] The actual internal resistance acquisition module is used to acquire the actual internal resistance of the battery, wherein the output voltage of the battery is the first battery voltage;

[0103] The theoretical internal resistance acquisition module is used to obtain the theoretical battery internal resistance required for the battery's output voltage to decrease from the first battery voltage when the system is in the minimum power consumption mode to the system's minimum operating voltage.

[0104] The battery power assessment module is used to determine whether the current battery power is sufficient to power the system, based on the actual internal resistance of the battery and the theoretical internal resistance of the battery.

[0105] The technical solution of this embodiment, through the cooperation between various functional modules, achieves the following: by obtaining the actual internal resistance of the current power supply battery and the theoretical internal resistance of the battery under the minimum operating voltage of the system, comparing the actual internal resistance of the battery with the theoretical internal resistance of the battery, and judging whether the current battery meets the system power supply requirements based on the comparison results, so as to achieve an accurate and stable judgment on whether the battery power meets the system power supply requirements.

[0106] Furthermore, embodiments of the present invention also propose a computer storage medium storing a battery power determination program. When the battery power determination program is executed by a processor, it implements the steps of the battery power determination method described above. Therefore, it will not be repeated here. Additionally, the beneficial effects of using the same method will not be repeated here either. For technical details not disclosed in the computer-readable storage medium embodiments of the present invention, please refer to the description of the method embodiments of the present invention. As an example, program instructions can be deployed to execute on a single computing device, or on multiple computing devices located at one location, or on multiple computing devices distributed across multiple locations and interconnected via a communication network.

[0107] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0108] It should also be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0109] Through the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general-purpose hardware, and of course, it can also be implemented by special hardware including application-specific integrated circuits, special CPUs, special memory, special components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be diverse, such as analog circuits, digital circuits, or special-purpose circuits. However, for the present invention, software program implementation is more often the preferred implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0110] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for determining battery power, characterized in that, The method includes: Obtain the actual internal resistance of the battery; The theoretical internal resistance of the battery required to reduce the output voltage of the battery from the first battery voltage when the system is in minimum power consumption mode to the minimum operating voltage of the system; Based on the actual battery internal resistance and the theoretical battery internal resistance, determine whether the current battery power is sufficient to supply power to the system; The system also includes a low-dropout linear regulator, which is connected in parallel with the battery; obtaining the actual internal resistance of the battery includes: Obtain the first battery voltage when the system is in minimum power consumption mode, and the second battery voltage when the system is in load mode; The first system power conversion efficiency is obtained based on the output voltage of the low-dropout linear regulator and the voltage of the second battery. The actual battery internal resistance is obtained based on the first battery voltage, the second battery voltage, the first system power conversion efficiency, the total system power in minimum power consumption mode, and the total system power when the system is in load mode.

2. The battery power determination method according to claim 1, characterized in that, The process of obtaining the actual internal resistance of the battery includes: Obtain the actual internal resistance and electromotive force of the battery.

3. The battery power determination method according to claim 2, characterized in that, The theoretical battery internal resistance required to reduce the battery's output voltage from the first battery voltage when the system is in minimum power consumption mode to the system's minimum operating voltage includes: The second system power conversion efficiency is obtained based on the output voltage of the low dropout linear regulator and the minimum operating voltage of the system. The theoretical internal resistance of the battery is obtained based on the battery electromotive force, the minimum operating voltage, the power conversion efficiency of the second system, and the maximum total power of the system.

4. The battery power determination method according to claim 1, characterized in that, The step of determining whether the current battery charge is sufficient for system power supply based on the actual battery internal resistance and the theoretical battery internal resistance includes: Determine whether the actual internal resistance of the battery is less than the theoretical internal resistance of the battery; If the actual internal resistance of the battery is less than the theoretical internal resistance of the battery, then the current battery charge is sufficient to power the system.

5. The battery power determination method according to claim 4, characterized in that, After determining whether the actual battery internal resistance is less than the theoretical battery internal resistance, the method further includes: If the actual battery internal resistance is greater than or equal to the theoretical battery internal resistance, then the current battery power is insufficient to power the system.

6. A battery power determination device, characterized in that, The device includes: The actual internal resistance acquisition module is used to acquire the actual internal resistance of the battery. The theoretical internal resistance acquisition module is used to obtain the theoretical internal resistance of the battery required for the output voltage of the battery to decrease from the first battery voltage when the system is in the minimum power consumption mode to the minimum operating voltage of the system. The battery power determination module is used to determine whether the current battery power is sufficient for system power supply based on the actual battery internal resistance and the theoretical battery internal resistance. The system also includes a low-dropout linear regulator connected in parallel with the battery; the actual internal resistance acquisition module is further configured to acquire the first battery voltage when the system is in minimum power consumption mode and the second battery voltage when the system is in load mode; obtain a first system power conversion efficiency based on the output voltage of the low-dropout linear regulator and the second battery voltage; and obtain the actual battery internal resistance based on the first battery voltage, the second battery voltage, the first system power conversion efficiency, the total system power in minimum power consumption mode, and the total system power in load mode.

7. A battery power determination device, characterized in that, include: A processor, a memory, and a battery power determination program stored in the memory, wherein the battery power determination program is executed by the processor to implement the steps of the battery power determination method as described in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a battery power determination program, which, when executed by a processor, implements the battery power determination method as described in any one of claims 1 to 5.

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