CN112886671A - Battery charging state detection method, detection device and charging device - Google Patents
Battery charging state detection method, detection device and charging device Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
- H02J7/0049—Detection of fully charged condition
Abstract
The application discloses a battery charging state detection method, a detection device and a charging device, wherein timing is carried out when charging is started, and charging time is recorded in real time; acquiring characteristic parameters of the charger in a preset acquisition cycle in the charging process; the characteristic parameters comprise a first voltage characteristic value corresponding to the starting time of the acquisition period and a second voltage characteristic value corresponding to the ending 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; whether the batteries with different capacities are in the full-charge state or not is judged, whether the batteries are in the full-charge state or not can be accurately judged when the capacities of the batteries change after the batteries age, the batteries do not need to be transformed, and the battery aging judgment method has the advantages of wide application range, high safety, low cost and high feasibility.
Description
Technical Field
The present application relates to a battery charging technology, and more particularly, to a battery charging status detection method, a battery charging status detection device, a battery charging device, an electronic apparatus, a computer-readable storage medium, and a battery chip.
Background
With the wide application of new energy technology, the safety problem of batteries draws more and more social importance, accidents caused by the problems of battery explosion, battery spontaneous combustion and the like are more and more, and the main reason of the battery accident is battery overcharge. The battery overcharging means that the charger continues to charge the battery with high power under the condition that the electric quantity of the battery is fully charged.
The main reasons for the occurrence of battery overcharge in batteries are: firstly, a charger with undifferentiated charging can charge batteries with different capacities, but the charger cannot judge whether the batteries are fully charged, and the charging can always charge the batteries, so that the accidents caused by overcharging of the batteries occur; and secondly, the charger charges the battery for a certain time according to the capacity of the battery, and the charging time of the charger exceeds the actual required charging time of the aged battery, so that the battery is overcharged.
Disclosure of Invention
The application aims to provide a method for detecting the charging state of a battery, and aims to solve the problem that a traditional charger cannot judge whether the battery is fully charged or not.
A first aspect of an embodiment of the present application provides a method for detecting a charging state of a battery, including:
timing when charging is started, and recording charging time in real time;
acquiring characteristic parameters of the charger in a preset acquisition cycle in the charging process; the characteristic parameters comprise a first voltage characteristic value corresponding to the starting time of the acquisition period and a second voltage characteristic value corresponding to the ending time of the acquisition period;
determining a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value;
and determining the charging state of the battery according to the charging time and the first voltage difference.
In one embodiment, the characteristic parameters specifically include N voltage characteristic values corresponding to N moments of the acquisition cycle; the time intervals of any two adjacent moments in the N moments are the same; the first moment corresponds to the starting moment of the acquisition period, and the Nth moment corresponds to the ending 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, the determining a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value includes:
sequentially subtracting the voltage characteristic value corresponding to the ith moment from the voltage characteristic value corresponding to the (i-1) th moment to obtain a second voltage difference corresponding to the (i-1) th time period;
obtaining the first voltage difference according to the N-1 second voltage differences;
wherein N is a positive integer of 4 or more, and i is a positive integer of 2 or more and N or less.
In an embodiment, the obtaining the first voltage difference according to the N-1 second voltage differences includes:
deleting the maximum value and the minimum value in the N-1 second voltage differences;
and summing the rest N-3 second voltage differences to obtain the first voltage difference.
In one embodiment, the characteristic parameters specifically include M voltage characteristic values corresponding to M moments of the acquisition cycle; the time intervals of any two adjacent moments in the M moments are the same; the first moment corresponds to the starting moment of the acquisition period, and the Mth moment corresponds to the ending 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, the determining the charging state of the battery according to the charging time and the first voltage difference comprises:
sequentially subtracting the voltage characteristic value corresponding to the j moment from the voltage characteristic value corresponding to the j-1 moment to obtain a third voltage difference corresponding to the j-1 time period;
the third voltage difference corresponding to the j time period is subtracted from the third voltage difference corresponding to the j-1 time period to obtain a fourth voltage difference corresponding to the j 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 fourth voltage differences corresponding to at least L time periods are greater than a third preset value, determining that the battery is in a full-charge 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.
In one embodiment, the characteristic parameter further includes a current characteristic value during the charging process;
accordingly, the determining the charging state of the battery according to the charging time and the first voltage difference comprises:
and 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, determining that the battery is in a full-charge state.
A second aspect of the embodiments of the present application provides a device for detecting a state of charge of a battery, including:
the timing module is used for timing when charging is started and recording charging time in real time;
the characteristic parameter acquisition module is used for acquiring the characteristic parameters of the charger in a preset acquisition cycle in the charging process; the characteristic parameters comprise a first voltage characteristic value corresponding to the starting time of the acquisition period and a second voltage characteristic value corresponding to the ending time of the acquisition period;
and the charging state judging module is used for determining a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value and determining the charging state of the battery according to the charging time and the first voltage difference.
A third aspect of embodiments of the present application provides a charging apparatus including a charger and the charging state detection apparatus for a battery according to any one of the second aspects.
A fourth aspect of embodiments of the present application provides an electronic device, comprising a processor and a memory, the processor and the memory being coupled, the memory being configured to store computer program instructions, which, when executed by the processor, cause the electronic device to perform the steps of the volume adjustment method of the first aspect.
A fifth aspect of embodiments of the present application provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the method according to any one of the designs of the first aspect.
A sixth aspect of embodiments of the present application provides a chip, which includes a processor, and when the processor executes instructions, the processor is configured to perform the method according to any one of the designs of the first aspect. The instructions may come from memory internal to the chip or from memory external to the chip. Optionally, the chip further comprises an input-output circuit.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: timing is carried out when charging is started, and charging time is recorded in real time; acquiring characteristic parameters of the charger in a preset acquisition cycle in the charging process; the characteristic parameters comprise a first voltage characteristic value corresponding to the starting time of the acquisition period and a second voltage characteristic value corresponding to the ending 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; whether the batteries with different capacities are in the full-charge state or not is judged, whether the batteries are in the full-charge state or not can be accurately judged when the capacities of the batteries change after the batteries age, the batteries do not need to be transformed, and the battery aging judgment method has the advantages of wide application range, high safety, low cost and high feasibility.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating an implementation of a method for detecting a charging state of a battery according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart illustrating an implementation of a method for detecting a charging state of a battery according to another embodiment of the present application;
FIG. 3 is a schematic diagram of an acquisition cycle in the method for detecting the state of charge of the battery shown in FIG. 2;
fig. 4 is a schematic flow chart illustrating an implementation of a method for detecting a charging state of a battery according to another embodiment of the present application;
fig. 5 is a schematic flow chart illustrating an implementation of a method for detecting a charging state of a battery according to another embodiment of the present application;
FIG. 6 is a schematic diagram of an acquisition cycle in the method for detecting the state of charge of the battery shown in FIG. 5;
fig. 7 is a schematic flow chart illustrating an implementation of a method for detecting a state of charge of a battery according to another embodiment of the present application;
fig. 8 is a schematic structural diagram of a charging power determination apparatus according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a charging device according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, an embodiment of the present application provides a method for detecting a charging state of a battery, where the method for detecting a charging state of a battery includes steps S100 to S400.
S100: and timing when the charging is started, and recording the charging time in real time.
Here, the start of charging means that the charger starts charging the battery, and may be understood as that the charger starts outputting a charging voltage and a charging current to the battery. The battery may be a single battery or a battery pack including a plurality of single batteries. The battery can be a lead-acid battery or a lithium iron phosphate battery and the like with the phenomenon of tail tilting of charging voltage. The tail tilting phenomenon of the charging voltage means that the voltage of a charger can rise rapidly when a battery is charged fully, and the tail tilting phenomenon is formed in a voltage-time curve. In the embodiment of the present application, the fully charged state of the battery may be understood as a fully charged state of the battery or an almost fully charged state of the battery, where the almost fully charged state of the battery refers to a slight difference between the full charge of the battery and the fully charged state of the battery, for example, the full charge of the battery is greater than or equal to 95% of the fully charged state of the battery, and the specific ratio is merely an example, and a person skilled in the art may design the specific ratio according to actual needs.
S200: acquiring characteristic parameters of the charger in a preset acquisition cycle in the charging process; the characteristic parameters comprise a first voltage characteristic value corresponding to the starting time of the acquisition period and a second voltage characteristic value corresponding to the ending time of the acquisition period.
The end time of the Tth acquisition period is overlapped with the start time of the T +1 th acquisition period, only one voltage characteristic value needs to be acquired at the end time of the Tth acquisition period and the start time of the T +1 th acquisition period, and the voltage characteristic values are a second voltage characteristic value corresponding to the end time of the Tth acquisition period and a first voltage characteristic value corresponding to the start time of the T +1 th acquisition period respectively.
S300: the first voltage difference is determined according to the first voltage characteristic value and the second voltage characteristic value.
The first voltage difference is used for reflecting the voltage gradient characteristic of the acquisition period, and the gradient characteristic comprises that the voltage characteristic value in the acquisition period is increased, decreased and maintained.
S400: and determining the charging state of the battery according to the charging time and the first voltage difference.
After the charger starts to charge the battery, the charging voltage of the charger is in a rapidly increasing rise period due to the charging characteristic, and the duration of the rise period is the first preset value. The charging voltage enters a stable period after passing through the rising period, and the change of the first voltage difference in the stable period is small. When the battery is in the full charge state, the charging voltage passes through the stabilization period, the first voltage difference can be rapidly increased, and the first voltage difference of the battery is stable in the change rule in the charging process and is not influenced by parameters such as capacity and aging degree, so that whether the battery is in the full charge state can be accurately judged through the first voltage difference and the charging time.
The method for detecting the charging state of the battery in the embodiment judges whether the battery is in the full-charge state according to the charging characteristics of the battery, can accurately judge whether the battery is in the full-charge state when being applied to batteries with different capacities, and has wide application range; and when the battery is aged, the battery capacity is changed, and then whether the battery is in a full-charge state can be accurately judged, so that the phenomenon that the battery is overcharged due to the aging of the battery is further avoided, and the conditions that the battery is exploded or is natural due to the overcharge of the battery are avoided.
In addition, the method for detecting the charging state of the battery in the embodiment only needs to acquire the characteristic parameters of the charger during the charging period and does not need to acquire the characteristic parameters of the battery during the charging and discharging period, so that the method has the advantages of low cost and high feasibility compared with a method for judging whether the battery is in a full-charge state or not by acquiring the charging and discharging parameters of the battery.
Referring to fig. 2, in an embodiment of the present application, S200 is specifically executed as S210, and the difference between S210 and S200 is: the characteristic parameters specifically comprise N voltage characteristic values corresponding to N moments of an acquisition cycle; the time intervals of any two adjacent moments in the N moments are the same; the first moment corresponds to the starting moment of the acquisition period, and the Nth moment corresponds to the ending moment of the acquisition period; the first voltage characteristic value corresponds to a first voltage characteristic value, and the Nth voltage characteristic value corresponds to a second voltage characteristic value.
Referring to fig. 3, in an acquisition cycle, a first voltage characteristic value is acquired from a first time, and then a next voltage characteristic value is acquired every fixed time interval until an nth voltage characteristic value is acquired at an nth time. The nth voltage characteristic value of the Tth acquisition period is the same as the first voltage characteristic value of the T +1 th acquisition period.
Accordingly, S300 includes the steps of:
s310: and sequentially subtracting the voltage characteristic value corresponding to the ith time from the voltage characteristic value corresponding to the (i-1) th time to obtain a second voltage difference corresponding to the (i-1) th time period.
In an acquisition cycle, subtracting the voltage characteristic value corresponding to the ith time from the voltage characteristic value corresponding to the ith-1 time in sequence to obtain second voltage differences corresponding to the ith-1 time period, wherein N-1 time periods exist in the ith-1 time period, so that N-1 second voltage differences exist; the i-1 th time period is a time period starting from the i-1 th time and ending at the i-th time.
S320: and obtaining the first voltage difference according to the N-1 second voltage differences.
The N-1 second voltage differences may be summed to obtain a first voltage difference; or the first voltage difference can be obtained after the data processing is carried out on the N-1 second voltage differences; the data processing of the N-1 second voltages may include data processing manners such as removing extreme values or selecting a second voltage difference of one of the intervals.
Wherein N is a positive integer greater than or equal to 4; i is a positive integer not less than 2 and not more than N.
Referring to fig. 4, in another embodiment of the present application, the step S320 specifically includes the following steps:
s321: the maximum and minimum values of the N-1 second voltage differences are deleted.
S322: and summing the rest N-3 second voltage differences to obtain a first voltage difference.
In this embodiment, the maximum value and the minimum value of the N-1 second voltage differences are deleted, and then the remaining N-3 second voltage differences are summed to obtain the first voltage difference, so that the maximum value second voltage difference and the minimum value second voltage difference generated due to the jump of the charging voltage can be excluded, and the first voltage difference less affected by the jump of the charging voltage can be obtained.
When the first voltage difference of the embodiment is adopted to determine the charging state of the battery, the charging state determination rule of the battery needs to be adjusted correspondingly compared with the determination of the charging state of the battery by directly summing the N-1 second voltage differences. For example, when the first voltage difference obtained by summing the N-1 second voltage differences is used, the condition for determining the charging state of the battery is that the first voltage difference obtained by summing the N-1 second voltage differences is greater than the first comparison value; then when the first voltage difference obtained by summing the N-3 second voltage differences is used, the condition for determining the charging state of the battery is that the first voltage difference obtained by summing the N-1 second voltage differences is larger than a second comparison value, and the ratio of the second comparison value to the first comparison value is (N-3): N-1.
Referring to fig. 5, in another embodiment of the present application, S200 is specifically executed as S220, and the difference between S220 and S200 is that the characteristic parameter specifically includes M voltage characteristic values corresponding to M moments of the acquisition period; the time intervals of any two adjacent moments in the M moments are the same; the first moment corresponds to the starting moment of the acquisition period, and the Mth moment corresponds to the ending moment of the acquisition period; the first voltage characteristic value corresponds to a first voltage characteristic value, and the mth voltage characteristic value corresponds to a second voltage characteristic value.
Referring to fig. 6, in an acquisition cycle, a first voltage characteristic value is acquired from a first time, and then a next voltage characteristic value is acquired every fixed time interval until an mth voltage characteristic value is acquired at an mth time. The Mth voltage characteristic value of the Tth acquisition period is the same as the first voltage characteristic value of the T +1 th acquisition period.
Correspondingly, S400 specifically includes the following steps:
s410: and sequentially subtracting the voltage characteristic value corresponding to the j moment from the voltage characteristic value corresponding to the j-1 moment to obtain a third voltage difference corresponding to the j-1 time period.
In an acquisition cycle, subtracting a voltage characteristic value corresponding to the j-1 th time from a voltage characteristic value corresponding to the j-1 th time in sequence to obtain a third voltage difference corresponding to the j-1 th time, wherein M-1 time periods exist in the j-1 th time period, and therefore M-1 voltage differences exist; the j-1 th time period is a time period starting from the j-1 th time and ending at the j-1 th time.
S420: and subtracting the third voltage difference corresponding to the j time period from the third voltage difference corresponding to the j-1 time period to obtain a fourth voltage difference corresponding to the j time period.
In an acquisition cycle, sequentially subtracting a third voltage difference corresponding to a j-1 time period from a third voltage difference corresponding to the j time period to obtain a third voltage difference corresponding to the j-1 time period, wherein M-1 time periods exist in the j-1 time period, and therefore M-1 time differences exist in the third voltage difference; the j-th time period is a time period starting from the j-th time and ending at the j + 1-th time. The fourth voltage difference reflects the speed of increment of the voltage characteristic value in the acquisition cycle.
S430: and 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 differences corresponding to at least L time periods are greater than a third preset value, determining that the battery is in a full-charge state.
Wherein M is a positive integer greater than or equal to 3; j is a positive integer of 2 to M, and L is a positive integer of M-2.
When the fourth voltage difference corresponding to at least L time periods is greater than a third preset value, and the third preset value is greater than or equal to 0, the voltage characteristic value at the moment is increased at an increasing speed; if the charging time is longer than the first preset value, the charging of the charger to the battery is over a rise period; when the first voltage difference is larger than the second preset value, the charging of the charger to the battery is represented to pass a rise period; therefore, the battery is determined to be in the full-charge state when the charging time is greater than the first preset value and the first voltage difference is greater than the second preset value through the fact that the fourth voltage differences corresponding to at least L time periods are greater than the third preset value, and the accuracy of judging whether the battery is in the full-charge state can be improved.
Referring to fig. 7, in an embodiment, S200 is specifically executed as S230, and the difference between S230 and S200 is: the characteristic parameter also comprises a current characteristic value in the charging process.
Accordingly, step S400 includes the steps of:
s440: and 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, determining that the battery is in a full-charge state.
When the electric quantity of the battery changes to be in a full-charge state, the charging current of the charger can be reduced to be lower than the fourth preset value, so that the battery is judged to be in the full-charge state when the charging time is longer than the first preset value, the first voltage difference is larger than the second preset value and the charging current is smaller than the fourth preset value, and the accuracy of judging that the battery is in the full-charge state can be improved.
Referring to fig. 8, a device 600 for detecting a charging state of a battery includes a timing module 601, a characteristic parameter obtaining module 602, and a charging state determining module 603.
The timing module 601 is used for timing when charging is started and recording charging time in real time.
The characteristic parameter acquiring module 602 is configured to acquire a characteristic parameter of the charger in a preset acquisition cycle during the charging process; the characteristic parameters comprise a first voltage characteristic value corresponding to the starting time of the acquisition period and a second voltage characteristic value corresponding to the ending time of the acquisition period.
The charging state determining module 603 is configured to determine a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value, and determine a charging state of the battery according to the charging time and the first voltage difference.
In this embodiment, the characteristic parameter obtaining module may include a voltage collecting module, and the voltage collecting module is configured to collect a voltage characteristic value in the charging process.
In an embodiment of the present application, the characteristic parameter obtaining module 602 is further configured to collect N voltage characteristic values corresponding to N moments of an acquisition cycle; the time intervals of any two adjacent moments in the N moments are the same; the first time corresponds to the starting time, and the Nth time corresponds to the ending time; the first voltage characteristic value corresponds to a first voltage characteristic value, and the Nth voltage characteristic value corresponds to a second voltage characteristic value.
Correspondingly, the charging state determining module 603 is further configured to sequentially perform a difference between the voltage characteristic value corresponding to the ith time and the voltage characteristic value corresponding to the i-1 th time to obtain a second voltage difference corresponding to the i-1 th time period; and obtaining a first voltage difference according to the N-1 second voltage differences; and deleting the maximum value and the minimum value in the N-1 second voltage differences, and summing the rest N-3 second voltage differences to obtain the first voltage difference.
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.
In an embodiment of the present application, the characteristic parameter obtaining module 602 is further configured to collect M voltage characteristic values corresponding to M moments in an acquisition cycle; the time intervals of any two adjacent moments in the M moments are the same; the first time corresponds to the starting time, and the Mth time corresponds to the ending time; the first voltage characteristic value corresponds to a first voltage characteristic value, and the mth voltage characteristic value corresponds to a second voltage characteristic value.
Correspondingly, the charging state determining module 603 is further configured to sequentially perform a difference between the voltage characteristic value corresponding to the j-th time and the voltage characteristic value corresponding to the j-1 th time to obtain a third voltage difference corresponding to the j-1 th time period; and the third voltage difference corresponding to the j time period is differenced with the third voltage difference corresponding to the j-1 time period to obtain a fourth voltage difference corresponding to the j 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 differences corresponding to at least L time periods are greater than the third preset value, determining that the battery is in a full-charge 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.
In an embodiment of the present application, the characteristic parameter obtaining module 602 is further configured to collect a current characteristic value in a charging process;
the charging state determining module 603 is further configured to determine that the battery is in a full-charge 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.
In this embodiment, the characteristic parameter obtaining module 602 may specifically include a voltage collecting module and a current collecting module.
The voltage acquisition module is used for acquiring a voltage characteristic value in the charging process, and the current acquisition module is used for acquiring a current characteristic value in the charging process.
Referring to fig. 9, the present embodiment further provides a charging device 700, which includes a charger 710 and the device 600 for detecting the charging state of a battery according to any of the above embodiments, because the charging device of the present embodiment includes the device for detecting the charging state of a battery according to any of the above embodiments, the charging device of the present embodiment at least includes the corresponding advantages of the device for detecting the charging state of a battery according to any of the above embodiments.
It should be noted that, for the information interaction, execution process, and other contents between the above-mentioned devices/units, the specific functions and technical effects thereof are based on the same concept as those of the embodiment of the method of the present application, and specific reference may be made to the part of the embodiment of the method, which is not described herein again.
Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 10, the electronic apparatus 4 of this embodiment includes: at least one processor 40 (only one processor is shown in fig. 10), a memory 41, and a computer program 42 stored in the memory 41 and executable on the at least one processor 40, the steps in any of the above-described respective battery state of charge detection method embodiments being implemented by the processor 40 when executing the computer program 42.
The electronic device 4 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The electronic device may include, but is not limited to, a processor 40, a memory 41. Those skilled in the art will appreciate that fig. 10 is merely an example of the electronic device 4, and does not constitute a limitation of the electronic device 4, and may include more or less components than those shown, or combine some of the components, or different components, such as an input-output device, a network access device, etc.
The Processor 40 may be a Central Processing Unit (CPU), and the Processor 40 may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may in some embodiments be an internal storage unit of the electronic device 4, such as a hard disk or a memory of the electronic device 4. The memory 41 may also be an external storage device of the electronic device 4 in other embodiments, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the electronic device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the electronic device 4. The memory 41 is used for storing an operating system, an application program, a BootLoader (BootLoader), data, and other programs, such as program codes of the computer program. The memory 41 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the above-mentioned method embodiments.
The embodiments of the present application provide a computer program product, which when running on a mobile terminal, enables the mobile terminal to implement the steps in the above method embodiments when executed.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code to a photographing apparatus/electronic device, a recording medium, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and patent practice.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/node device and method may be implemented in other ways. For example, the above-described apparatus/node device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical function division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A method for detecting a state of charge of a battery, comprising:
timing when charging is started, and recording charging time in real time;
acquiring characteristic parameters of the charger in a preset acquisition cycle in the charging process; the characteristic parameters comprise a first voltage characteristic value corresponding to the starting time of the acquisition period and a second voltage characteristic value corresponding to the ending time of the acquisition period;
determining a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value;
and determining the charging state of the battery according to the charging time and the first voltage difference.
2. The method according to claim 1, wherein the characteristic parameters specifically include N voltage characteristic values corresponding to N times of the acquisition cycle; the time intervals of any two adjacent moments in the N moments are the same; the first moment corresponds to the starting moment of the acquisition period, and the Nth moment corresponds to the ending 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, the determining a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value includes:
sequentially subtracting the voltage characteristic value corresponding to the ith moment from the voltage characteristic value corresponding to the (i-1) th moment to obtain a second voltage difference corresponding to the (i-1) th time period;
obtaining the first voltage difference according to the N-1 second voltage differences;
wherein N is a positive integer of 4 or more, and i is a positive integer of 2 or more and N or less.
3. The method for detecting the state of charge of a battery according to claim 2, wherein the obtaining the first voltage difference according to the N-1 second voltage differences comprises:
deleting the maximum value and the minimum value in the N-1 second voltage differences;
and summing the rest N-3 second voltage differences to obtain the first voltage difference.
4. The method according to claim 1, wherein the characteristic parameters specifically include M voltage characteristic values corresponding to M times of the acquisition cycle; the time intervals of any two adjacent moments in the M moments are the same; the first moment corresponds to the starting moment of the acquisition period, and the Mth moment corresponds to the ending 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, the determining the charging state of the battery according to the charging time and the first voltage difference comprises:
sequentially subtracting the voltage characteristic value corresponding to the j moment from the voltage characteristic value corresponding to the j-1 moment to obtain a third voltage difference corresponding to the j-1 time period;
the third voltage difference corresponding to the j time period is subtracted from the third voltage difference corresponding to the j-1 time period to obtain a fourth voltage difference corresponding to the j 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 fourth voltage differences corresponding to at least L time periods are greater than a third preset value, determining that the battery is in a full-charge 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 a state of charge of a battery according to claim 1, wherein the characteristic parameter further includes a current characteristic value during charging;
accordingly, the determining the charging state of the battery according to the charging time and the first voltage difference comprises:
and 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, determining that the battery is in a full-charge state.
6. A state of charge detection device for a battery, comprising:
the timing module is used for timing when charging is started and recording charging time in real time;
the characteristic parameter acquisition module is used for acquiring the characteristic parameters of the charger in a preset acquisition cycle in the charging process; the characteristic parameters comprise a first voltage characteristic value corresponding to the starting time of the acquisition period and a second voltage characteristic value corresponding to the ending time of the acquisition period;
and the charging state judging module is used for determining a first voltage difference according to the first voltage characteristic value and the second voltage characteristic value and determining the charging state of the battery according to the charging time and the first voltage difference.
7. A charging device comprising a charger and a charging state detection device of the battery according to claim 6.
8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method of any of claims 1 to 5 when executing the computer program.
9. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 5.
10. A chip comprising a processor coupled to a memory for storing computer program instructions which, when executed by the processor, cause the chip to perform the method of any of claims 1 to 5.
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