Battery charging state detection method, detection device and charging device

Abstract

The present application discloses a battery charging state detection method, a detection device and a charging device, which start timing at the beginning of charging and record the charging time in real time; obtain characteristic parameters of the charger in a preset acquisition cycle during the charging process; the characteristic parameters include a first voltage characteristic value corresponding to the start time of the acquisition cycle and a second voltage characteristic value corresponding to the end time of the acquisition cycle; determine a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value; determine the charging state of the battery according to the charging time and the first voltage difference; and realize the judgment of whether batteries of different capacities are in a fully charged state, and when the capacity changes after the battery ages, it is also possible to accurately judge whether the battery is in a fully charged state, and there is no need to modify the battery, which has the advantages of wide application range, high safety, low cost and high feasibility.

Description

Technical Field

[0001] The present application belongs to the field of battery charging technology, and in particular relates to a battery charging state detection method, a detection device, a charging device, an electronic device, a computer-readable storage medium, and a chip. Background Art

[0002] With the widespread application of new energy technologies, battery safety issues are attracting more and more attention from society. Every year, there are more and more accidents caused by battery explosions and battery spontaneous combustion. The main cause of battery accidents is battery overcharging. Battery overcharging means that the charger continues to charge the battery at high power when the battery is already fully charged.

[0003] The main reasons for battery overcharge are: 1. An indiscriminate charger can charge batteries of different capacities, but the charger cannot determine whether the battery is fully charged. It will continue to charge the battery, causing the battery to overcharge and cause accidents; 2. The charger charges the battery for a certain period of time according to the battery capacity, and the charging time of the charger exceeds the actual charging time required for the aged battery, causing the battery to overcharge. Summary of the invention

[0004] The purpose of the present application is to provide a method for detecting the charging status of a battery, aiming to solve the problem that a traditional charger cannot determine whether the battery is fully charged.

[0005] A first aspect of an embodiment of the present application provides a method for detecting a charging state of a battery, comprising:

[0006] Start timing at the beginning of charging and record the charging time in real time;

[0007] Acquire characteristic parameters of the charger in a preset acquisition cycle during the charging process; the characteristic parameters include a first voltage characteristic value corresponding to the start time of the acquisition cycle and a second voltage characteristic value corresponding to the end time of the acquisition cycle;

[0008] determining a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value;

[0009] A charging state of the battery is determined according to the charging time and the first voltage difference.

[0010] In one embodiment, the characteristic parameter specifically includes N voltage characteristic values ​​corresponding to N moments of the acquisition period; the time interval between any two adjacent moments of the N moments is the same; the first moment corresponds to the start moment of the acquisition period, and the Nth moment corresponds to the end moment of the acquisition period; the first voltage characteristic value corresponds to the first voltage characteristic value, and the Nth voltage characteristic value corresponds to the second voltage characteristic value;

[0011] Accordingly, determining the first voltage difference according to the first voltage characteristic value and the second voltage characteristic value includes:

[0012] Subtracting the voltage characteristic value corresponding to the i-th moment from the voltage characteristic value corresponding to the i-1-th moment in sequence to obtain a second voltage difference corresponding to the i-1-th time period;

[0013] Obtaining the first voltage difference according to N-1 second voltage differences;

[0014] Wherein, N is a positive integer greater than or equal to 4, and i is a positive integer greater than or equal to 2 and less than or equal to N.

[0015] In one embodiment, obtaining the first voltage difference according to the N-1 second voltage differences includes:

[0016] Deleting the maximum value and the minimum value among the N-1 second voltage differences;

[0017] The remaining N-3 second voltage differences are summed to obtain the first voltage difference.

[0018] In one embodiment, the characteristic parameter specifically includes M voltage characteristic values ​​corresponding to M moments of the acquisition period; the time interval between any two adjacent moments of the M moments is the same; the first moment corresponds to the start moment of the acquisition period, and the Mth moment corresponds to the end moment of the acquisition period; the first voltage characteristic value corresponds to the first voltage characteristic value, and the Mth voltage characteristic value corresponds to the second voltage characteristic value;

[0019] Accordingly, determining the charging state of the battery according to the charging time and the first voltage difference includes:

[0020] Subtracting the voltage characteristic value corresponding to the j-th moment from the voltage characteristic value corresponding to the j-1-th moment in sequence to obtain a third voltage difference corresponding to the j-1-th time period;

[0021] Subtract the third voltage difference corresponding to the j-th time period from the third voltage difference corresponding to the j-1-th time period to obtain a fourth voltage difference corresponding to the j-th time period;

[0022] When the charging time is greater than a first preset value, the first voltage difference is greater than a second preset value, and the fourth voltage difference corresponding to at least L time periods is greater than a third preset value, it is determined that the battery is in a fully charged state;

[0023] Wherein, M is a positive integer greater than or equal to 3, j is a positive integer greater than or equal to 2 and less than or equal to M, and L is a positive integer less than or equal to M-2.

[0024] In one embodiment, the characteristic parameter also includes a current characteristic value during the charging process;

[0025] Accordingly, determining the charging state of the battery according to the charging time and the first voltage difference includes:

[0026] When the charging time is greater than a first preset value, the first voltage difference is greater than a second preset value, and the current characteristic value is less than a fourth preset value, it is determined that the battery is in a fully charged state.

[0027] A second aspect of an embodiment of the present application provides a battery charging state detection device, comprising:

[0028] A timing module is used to start timing when charging starts and record the charging time in real time;

[0029] A characteristic parameter acquisition module, used to acquire characteristic parameters of the charger in a preset acquisition cycle during the charging process; the characteristic parameters include a first voltage characteristic value corresponding to the start time of the acquisition cycle and a second voltage characteristic value corresponding to the end time of the acquisition cycle;

[0030] A charging state judgment module is used to determine a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value, and to determine a charging state of the battery according to the charging time and the first voltage difference.

[0031] A third aspect of an embodiment of the present application provides a charging device, comprising a charger and a battery charging status detection device as described in any one of the second aspects.

[0032] A fourth aspect of an embodiment of the present application provides an electronic device, including a processor and a memory, wherein the processor and the memory are coupled, and the memory is used to store computer program instructions. When the processor executes the computer program instructions, the electronic device executes the steps of the volume adjustment method described in the first aspect.

[0033] A fifth aspect of an embodiment of the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute a method according to any one of the designs in the first aspect.

[0034] A sixth aspect of the embodiments of the present application provides a chip, the chip including a processor, when the processor executes an instruction, the processor is used to execute the method involved in any one of the designs in the first aspect above. The instruction may come from a memory inside the chip or from a memory outside the chip. Optionally, the chip also includes an input and output circuit.

[0035] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: timing is performed at the beginning of charging, and the charging time is recorded in real time; characteristic parameters of the charger are obtained in a preset acquisition cycle during the charging process; the characteristic parameters include a first voltage characteristic value corresponding to the start time of the acquisition cycle and a second voltage characteristic value corresponding to the end time of the acquisition cycle; a first voltage difference is determined according to the first voltage characteristic value and the second voltage characteristic value; the charging state of the battery is determined according to the charging time and the first voltage difference; it is possible to judge whether batteries of different capacities are in a fully charged state, and when the capacity changes after the battery ages, it is also possible to accurately judge whether the battery is in a fully charged state, and there is no need to modify the battery, and it has the advantages of wide application range, high safety, low cost and high feasibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A schematic diagram of a method for detecting a battery charging state according to an embodiment of the present application;

[0038] Figure 2 A schematic diagram of a method for detecting a battery charging state according to another embodiment of the present application;

[0039] Figure 3 for Figure 2 A schematic diagram of a collection cycle in a battery charging state detection method shown;

[0040] Figure 4 A schematic diagram of a method for detecting a battery charging state according to another embodiment of the present application;

[0041] Figure 5 A schematic diagram of a method for detecting a battery charging state according to another embodiment of the present application;

[0042] Figure 6 for Figure 5A schematic diagram of a collection cycle in a battery charging state detection method shown;

[0043] Figure 7 A schematic diagram of a method for detecting a battery charging state according to another embodiment of the present application;

[0044] Figure 8 A schematic diagram of the structure of a charging capacity determination device provided in an embodiment of the present application;

[0045] Fig. 9 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0046] Fig.10 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] See also Figure 1 , an embodiment of the present application provides a battery charging status detection method, and the battery charging status detection method includes steps S100 to S400.

[0049] S100: Start timing when charging starts, and record the charging time in real time.

[0050] Among them, charging starts means that the charger starts to charge the battery, which can be understood as the charger starts to output charging voltage and charging current to the battery. The battery can be a single cell or a battery pack composed of multiple single cells. The battery can be a lead-acid battery or a lithium iron phosphate battery that has a charging voltage tail phenomenon. The charging voltage tail phenomenon refers to the phenomenon that when the battery is almost fully charged, the voltage of the charger rises rapidly, forming a tail in the voltage-time curve. In the embodiment of the present application, the fully charged state of the battery can be understood as the battery is fully charged or the battery is about to be fully charged. The battery is about to be fully charged means that there is a slight difference between the battery power and the fully charged power, for example, the battery power is greater than or equal to 95% of the battery power when it is fully charged. The ratio of 95% is only an example, and the specific ratio is designed accordingly by technicians in this field according to actual needs.

[0051] S200: Acquire characteristic parameters of the charger in a preset acquisition cycle during the charging process; the characteristic parameters include a first voltage characteristic value corresponding to the start time of the acquisition cycle and a second voltage characteristic value corresponding to the end time of the acquisition cycle.

[0052] Among them, the end time of the Tth collection cycle overlaps with the start time of the T+1th collection cycle, and only one voltage characteristic value needs to be collected at the end time of the Tth collection cycle and the start time of the T+1th collection cycle, and the voltage characteristic values ​​are respectively the second voltage characteristic value corresponding to the end time of the Tth collection cycle and the first voltage characteristic value corresponding to the start time of the T+1th collection cycle.

[0053] S300: Determine a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value.

[0054] The first voltage difference is used to reflect the voltage variation characteristics of the acquisition period, and the variation characteristics include whether the voltage characteristic value in the acquisition period is increasing, decreasing, or remaining unchanged.

[0055] S400: Determine a charging state of the battery according to the charging time and the first voltage difference.

[0056] Because after the charger starts charging the battery, due to the characteristics of charging, the charging voltage of the charger will first be in a rapidly increasing rising period, and the duration of the rising period is a first preset value. After the charging voltage passes the rising period, it will enter a stable period, and the change of the first voltage difference in the stable period is very small. When the battery is in a fully charged state, the charging voltage passes the stable period, and the first voltage difference will increase rapidly. Because the change law of the first voltage difference of the battery during the charging process is stable and is not affected by parameters such as capacity and aging degree, the first voltage difference and charging time can accurately determine whether the battery is in a fully charged state.

[0057] The battery charging status detection method of the present embodiment determines whether the battery is in a fully charged state according to the battery charging characteristics. It can be used for batteries of different capacities to accurately determine whether the battery is in a fully charged state, and has a wide range of applications. Moreover, when the battery ages and causes the battery capacity to change, it can still accurately determine whether the battery is in a fully charged state, further avoiding battery overcharging due to battery aging, thereby avoiding battery explosion or natural disasters caused by battery overcharging.

[0058] In addition, since the battery charging status detection method of this embodiment only needs to collect the characteristic parameters of the charger during charging, and does not need to obtain the characteristic parameters of the battery during charging and discharging, it has the advantages of low cost and high feasibility compared to the method of determining whether the battery is in a fully charged state by obtaining the charging and discharging parameters of the battery.

[0059] See also Figure 2In one embodiment of the present application, S200 is specifically implemented as S210. The difference between S210 and S200 is that: the characteristic parameters specifically include N voltage characteristic values ​​corresponding to N moments in the acquisition period; the time interval between any two adjacent moments in the N moments is the same; the first moment corresponds to the start moment of the acquisition period, and the Nth moment corresponds to the end moment of the acquisition period; the first voltage characteristic value corresponds to the first voltage characteristic value, and the Nth voltage characteristic value corresponds to the second voltage characteristic value.

[0060] See also Figure 3 In one acquisition cycle, the first voltage characteristic value is acquired from the first moment, and then the next voltage characteristic value is acquired at a fixed time interval until the Nth voltage characteristic value is acquired at the Nth moment. The Nth voltage characteristic value of the Tth acquisition cycle is the same as the first voltage characteristic value of the T+1th acquisition cycle.

[0061] Accordingly, S300 includes the following steps:

[0062] S310: Subtracting the voltage characteristic value corresponding to the i-th moment from the voltage characteristic value corresponding to the i-1-th moment in sequence to obtain a second voltage difference corresponding to the i-1-th time period.

[0063] In one acquisition cycle, the voltage characteristic value corresponding to the i-th moment is subtracted from the voltage characteristic value corresponding to the i-1th moment in turn to obtain the second voltage difference corresponding to the i-1th time period. There are N-1 i-1th time periods, so there are also N-1 second voltage differences. The i-1th time period refers to the time period starting from the i-1th moment and ending at the i-th moment.

[0064] S320: Obtain a first voltage difference according to N-1 second voltage differences.

[0065] Among them, the N-1 second voltage differences can be summed to obtain the first voltage difference; or the N-1 second voltage differences can be processed to obtain the first voltage difference; the data processing of the N-1 second voltages can include eliminating extreme values ​​or selecting the second voltage difference in one interval and other data processing methods.

[0066] Wherein, N is a positive integer greater than or equal to 4; i is a positive integer greater than or equal to 2 and less than or equal to N.

[0067] See also Figure 4 In another embodiment of the present application, the above S320 specifically includes the following steps:

[0068] S321: Delete the maximum value and the minimum value among the N-1 second voltage differences.

[0069] S322: summing the remaining N-3 second voltage differences to obtain a first voltage difference.

[0070] In this embodiment, by deleting the maximum value and the minimum value of the N-1 second voltage differences and then summing the remaining N-3 second voltage differences to obtain the first voltage difference, the maximum value second voltage difference and the minimum value second voltage difference caused by the jump of the charging voltage can be excluded, thereby obtaining a first voltage difference that is less affected by the jump of the charging voltage.

[0071] When the first voltage difference of this embodiment is used to determine the charging state of the battery, relative to directly determining the charging state of the battery by summing up the first voltage difference obtained by N-1 second voltage differences, the charging state determination rule of the battery needs to be adjusted accordingly. For example, when the first voltage difference is obtained by summing up the N-1 second voltage differences, the condition for determining the charging state of the battery is that the first voltage difference obtained by summing up the N-1 second voltage differences is greater than the first comparison value; when the first voltage difference is obtained by summing up the N-3 second voltage differences, the condition for determining the charging state of the battery is that the first voltage difference obtained by summing up the N-1 second voltage differences is greater than the second comparison value, and the ratio of the second comparison value to the first comparison value is (N-3):(N-1).

[0072] See also Figure 5 In another embodiment of the present application, S200 is specifically implemented as S220. The difference between S220 and S200 is that the characteristic parameters specifically include M voltage characteristic values ​​corresponding to M moments in the acquisition period; the time interval between any two adjacent moments in the M moments is the same; the first moment corresponds to the start moment of the acquisition period, and the Mth moment corresponds to the end moment of the acquisition period; the first voltage characteristic value corresponds to the first voltage characteristic value, and the Mth voltage characteristic value corresponds to the second voltage characteristic value.

[0073] See also Figure 6 In one acquisition cycle, the first voltage characteristic value is acquired from the first moment, and then the next voltage characteristic value is acquired at a fixed time interval until the Mth voltage characteristic value is acquired at the Mth moment. The Mth voltage characteristic value of the Tth acquisition cycle is the same as the first voltage characteristic value of the T+1th acquisition cycle.

[0074] Accordingly, S400 specifically includes the following steps:

[0075] S410: Subtracting the voltage characteristic value corresponding to the j-th moment from the voltage characteristic value corresponding to the j-1-th moment in sequence to obtain a third voltage difference corresponding to the j-1-th time period.

[0076] In one acquisition cycle, the voltage characteristic value corresponding to the j-th moment is subtracted from the voltage characteristic value corresponding to the j-1th moment in turn to obtain the third voltage difference corresponding to the j-1th time period. There are M-1 j-1th time periods, so there are also M-1 third voltage differences. The j-1th time period refers to the time period starting from the j-1th moment and ending at the j-th moment.

[0077] S420: Subtract the third voltage difference corresponding to the j-th time period from the third voltage difference corresponding to the j-1-th time period to obtain a fourth voltage difference corresponding to the j-th time period.

[0078] Among them, in one acquisition cycle, the third voltage difference corresponding to the j-th time period is subtracted from the third voltage difference corresponding to the j-1th time period in sequence to obtain the third voltage difference corresponding to the j-1th time period. There are M-1 j-1th time periods, so there are also M-1 third voltage differences; the j-th time period refers to the time period starting from the j-th moment and ending at the j+1th moment. The fourth voltage difference reflects the increasing speed of the voltage characteristic value in the acquisition cycle.

[0079] S430: When the charging time is greater than the first preset value, the first voltage difference is greater than the second preset value, and the fourth voltage difference corresponding to at least L time periods is greater than the third preset value, it is determined that the battery is in a fully charged state.

[0080] Wherein, M is a positive integer greater than or equal to 3; j is a positive integer greater than or equal to 2 and less than or equal to M, and L is a positive integer less than or equal to M-2.

[0081] Among them, when the fourth voltage difference corresponding to at least L time periods is greater than the third preset value, and the third preset value is greater than or equal to 0, the voltage characteristic value at this time is increasing at an increasing rate; and the charging time is greater than the first preset value, it means that the charger has passed the rising period for charging the battery; when the first voltage difference is greater than the second preset value, it also represents that the charger has passed the rising period for charging the battery; therefore, when the fourth voltage difference corresponding to at least L time periods is greater than the third preset value, when the charging time is greater than the first preset value and the first voltage difference is greater than the second preset value, it is determined that the battery is in a fully charged state, which can improve the accuracy of judging whether the battery is in a fully charged state.

[0082] See also Figure 7 In one embodiment, S200 is specifically implemented as S230. The difference between S230 and S200 is that the characteristic parameter also includes the current characteristic value during the charging process.

[0083] Accordingly, step S400 includes the following steps:

[0084] S440: When the charging time is greater than the first preset value, the first voltage difference is greater than the second preset value, and the current characteristic value is less than the fourth preset value, it is determined that the battery is in a fully charged state.

[0085] Because when the battery power changes to a fully charged state, the charging current of the charger will drop to below the fourth preset value. Therefore, when the charging time is greater than the first preset value, the first voltage difference is greater than the second preset value, and the charging current is less than the fourth preset value, the battery is judged to be in a fully charged state, which can improve the accuracy of judging that the battery is in a fully charged state.

[0086] See also Figure 8 , a battery charging status detection device 600 includes a timing module 601, a characteristic parameter acquisition module 602 and a charging status judgment module 603.

[0087] The timing module 601 is used to count the time when charging starts and record the charging time in real time.

[0088] The characteristic parameter acquisition module 602 is used to acquire characteristic parameters of the charger in a preset acquisition cycle during the charging process; the characteristic parameters include a first voltage characteristic value corresponding to the start time of the acquisition cycle and a second voltage characteristic value corresponding to the end time of the acquisition cycle.

[0089] The charging state judgment module 603 is used to determine the first voltage difference according to the first voltage characteristic value and the second voltage characteristic value, and to determine the charging state of the battery according to the charging time and the first voltage difference.

[0090] In this embodiment, the characteristic parameter acquisition module may include a voltage acquisition module, and the voltage acquisition module is used to collect voltage characteristic values ​​during the charging process.

[0091] In one embodiment of the present application, the characteristic parameter acquisition module 602 is also used to collect N voltage characteristic values ​​corresponding to N moments in the acquisition period; the time interval between any two adjacent moments in the N moments is the same; the first moment corresponds to the start moment, and the Nth moment corresponds to the end moment; the first voltage characteristic value corresponds to the first voltage characteristic value, and the Nth voltage characteristic value corresponds to the second voltage characteristic value.

[0092] Correspondingly, the charging status judgment module 603 is also used to sequentially subtract the voltage characteristic value corresponding to the i-th moment from the voltage characteristic value corresponding to the i-1-th time period to obtain the second voltage difference corresponding to the i-1-th time period; and obtain the first voltage difference based on N-1 second voltage differences; delete the maximum value and the minimum value of the N-1 second voltage differences, and sum the remaining N-3 second voltage differences to obtain the first voltage difference.

[0093] Wherein, N is a positive integer greater than or equal to 4, and i is a positive integer greater than or equal to 2 and less than or equal to N.

[0094] In one embodiment of the present application, the characteristic parameter acquisition module 602 is also used to collect M voltage characteristic values ​​corresponding to M moments in the collection period; the time interval between any two adjacent moments in the M moments is the same; the first moment corresponds to the start moment, and the Mth moment corresponds to the end moment; the first voltage characteristic value corresponds to the first voltage characteristic value, and the Mth voltage characteristic value corresponds to the second voltage characteristic value.

[0095] Correspondingly, the charging status judgment module 603 is also used to sequentially subtract the voltage characteristic value corresponding to the j-th moment from the voltage characteristic value corresponding to the j-1-th moment to obtain a third voltage difference corresponding to the j-1-th time period; and to subtract the third voltage difference corresponding to the j-th time period from the third voltage difference corresponding to the j-1-th time period to obtain a fourth voltage difference corresponding to the j-th time period; and when the charging time is greater than the first preset value, the first voltage difference is greater than the second preset value, and the fourth voltage difference corresponding to at least L time periods is greater than the third preset value, it is determined that the battery is in a fully charged state.

[0096] Wherein, M is a positive integer greater than or equal to 3, and j is a positive integer greater than or equal to 2 and less than or equal to M.

[0097] In an embodiment of the present application, the characteristic parameter acquisition module 602 is also used to collect the current characteristic value during the charging process;

[0098] The charging state judgment module 603 is further configured to determine that the battery is in a fully charged state when the charging time is greater than a first preset value, the first voltage difference is greater than a second preset value, and the current characteristic value is less than a fourth preset value.

[0099] In this embodiment, the characteristic parameter acquisition module 602 may specifically include a voltage acquisition module and a current acquisition module.

[0100] The voltage acquisition module is used to acquire voltage characteristic values ​​during the charging process, and the current acquisition module is used to acquire current characteristic values ​​during the charging process.

[0101] See also Fig. 9 The embodiment of the present application also provides a charging device 700, which includes a charger 710 and a battery charging status detection device 600 as in any of the above embodiments. Because the charging device of this embodiment includes the battery charging status detection device of any of the above embodiments, the charging device of this embodiment at least includes the beneficial effects corresponding to the battery charging status detection device of any of the above embodiments.

[0102] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0103] Fig.10 This is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Fig.10 As shown, the electronic device 4 of this embodiment includes: at least one processor 40 ( Fig.10 Only one processor is shown), a memory 41, and a computer program 42 stored in the memory 41 and executable on the at least one processor 40, wherein the processor 40 implements the steps in any of the above-mentioned battery charging status detection method embodiments when executing the computer program 42.

[0104] The electronic device 4 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The electronic device may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will appreciate that Fig.10 It is only an example of the electronic device 4 and does not constitute a limitation on the electronic device 4. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, it may also include input and output devices, network access devices, etc.

[0105] The processor 40 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0106] In some embodiments, the memory 41 may be an internal storage unit of the electronic device 4, such as a hard disk or memory of the electronic device 4. In other embodiments, the memory 41 may also be an external storage device of the electronic device 4, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 4. Further, the memory 41 may also include both an internal storage unit of the electronic device 4 and an external storage device. The memory 41 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program, etc. The memory 41 may also be used to temporarily store data that has been output or is to be output.

[0107] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0108] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0109] An embodiment of the present application provides a computer program product. When the computer program product runs on a mobile terminal, the mobile terminal can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0110] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the camera / electronic device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0111] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0112] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0113] In the embodiments provided in the present application, it should be understood that the disclosed devices / node equipment and methods can be implemented in other ways. For example, the device / node equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0114] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0115] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for detecting a battery charging state, characterized in that: include: Start timing at the beginning of charging and record the charging time in real time; Acquire characteristic parameters of the charger in a preset acquisition cycle during the charging process; The characteristic parameters include a first voltage characteristic value corresponding to the start time of the acquisition period and a second voltage characteristic value corresponding to the end time of the acquisition period; determining a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value; determining a charging state of the battery according to the charging time and the first voltage difference; The battery is a battery with a charging voltage tail phenomenon, and the charging voltage tail phenomenon refers to the phenomenon that when the battery is almost fully charged, the voltage of the charger rises rapidly, forming a tail in the voltage-time curve.

2. The method for detecting the charging state of a battery according to claim 1, wherein: The characteristic parameters specifically include N voltage characteristic values ​​corresponding to N moments of the acquisition period; the time interval between any two adjacent moments of the N moments is the same; the first moment corresponds to the start moment of the acquisition period, and the Nth moment corresponds to the end moment of the acquisition period; the first voltage characteristic value corresponds to the first voltage characteristic value, and the Nth voltage characteristic value corresponds to the second voltage characteristic value; Accordingly, determining the first voltage difference according to the first voltage characteristic value and the second voltage characteristic value includes: Subtracting the voltage characteristic value corresponding to the i-th moment from the voltage characteristic value corresponding to the i-1-th moment in sequence to obtain a second voltage difference corresponding to the i-1-th time period; Obtaining the first voltage difference according to N-1 second voltage differences; Wherein, N is a positive integer greater than or equal to 4, and i is a positive integer greater than or equal to 2 and less than or equal to N.

3. The method for detecting the charging state of a battery as claimed in claim 2, wherein: The obtaining the first voltage difference according to the N-1 second voltage differences includes: Deleting the maximum value and the minimum value among the N-1 second voltage differences; The remaining N-3 second voltage differences are summed to obtain the first voltage difference.

4. The method for detecting the charging state of a battery according to claim 1, wherein: The characteristic parameters specifically include M voltage characteristic values ​​corresponding to M moments of the acquisition period; the time interval between any two adjacent moments of the M moments is the same; the first moment corresponds to the start moment of the acquisition period, and the Mth moment corresponds to the end moment of the acquisition period; the first voltage characteristic value corresponds to the first voltage characteristic value, and the Mth voltage characteristic value corresponds to the second voltage characteristic value; Accordingly, determining the charging state of the battery according to the charging time and the first voltage difference includes: Subtracting the voltage characteristic value corresponding to the j-th moment from the voltage characteristic value corresponding to the j-1-th moment in sequence to obtain a third voltage difference corresponding to the j-1-th time period; Subtract the third voltage difference corresponding to the j-th time period from the third voltage difference corresponding to the j-1-th time period to obtain a fourth voltage difference corresponding to the j-th time period; When the charging time is greater than a first preset value, the first voltage difference is greater than a second preset value, and the fourth voltage difference corresponding to at least L time periods is greater than a third preset value, it is determined that the battery is in a fully charged state; Wherein, M is a positive integer greater than or equal to 3, j is a positive integer greater than or equal to 2 and less than or equal to M, and L is a positive integer less than or equal to M-2.

5. The method for detecting the charging state of a battery according to claim 1, wherein: The characteristic parameters also include the current characteristic value during the charging process; Accordingly, determining the charging state of the battery according to the charging time and the first voltage difference includes: When the charging time is greater than a first preset value, the first voltage difference is greater than a second preset value, and the current characteristic value is less than a fourth preset value, it is determined that the battery is in a fully charged state.

6. A battery charging status detection device, characterized in that: include: A timing module is used to start timing when charging starts and record the charging time in real time; A characteristic parameter acquisition module is used to acquire characteristic parameters of the charger in a preset acquisition cycle during the charging process; The characteristic parameters include a first voltage characteristic value corresponding to the start time of the acquisition period and a second voltage characteristic value corresponding to the end time of the acquisition period; a charging state judgment module, configured to determine a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value, and to determine a charging state of the battery according to the charging time and the first voltage difference; The battery is a battery with a charging voltage tail phenomenon, and the charging voltage tail phenomenon refers to the phenomenon that when the battery is almost fully charged, the voltage of the charger rises rapidly, forming a tail in the voltage-time curve.

7. A charging device, comprising a charger and the battery charging state detection device as claimed in claim 6.

8. An electronic device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 5 when executing the computer program.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

10. A chip, characterized in that: The chip comprises a processor, the processor is coupled to a memory, the memory is used to store computer program instructions, and when the processor executes the computer program instructions, the chip executes the method according to any one of claims 1 to 5.

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