CN107453454B - Charging control method and system of clock power supply of mobile terminal and mobile terminal - Google Patents
Charging control method and system of clock power supply of mobile terminal and mobile terminal Download PDFInfo
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- CN107453454B CN107453454B CN201710897788.4A CN201710897788A CN107453454B CN 107453454 B CN107453454 B CN 107453454B CN 201710897788 A CN201710897788 A CN 201710897788A CN 107453454 B CN107453454 B CN 107453454B
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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
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
- H02J7/007184—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage in response to battery voltage gradient
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a charging control method and a charging control system for a clock power supply of a mobile terminal and the mobile terminal, wherein the charging control method comprises the following steps: when the clock power supply is in a charging state, detecting whether the clock power supply is in a fully charged state at preset first time intervals; when the clock power supply is in a full-charge state, the charging current of the clock power supply is adjusted according to a preset rule until the charging current is 0. The invention detects the charging state of the clock power supply at regular time and adjusts the charging current to be 0 when the clock power supply is in a full-charge state, so as to solve the problem that the capacitor is easy to age because the capacitor is in the charging state for a long time, the capacity of the capacitor is influenced finally, and even the function of the real-time clock is influenced in the prior art.
Description
Technical Field
The invention relates to the technical field of mobile terminals, in particular to a charging control method and system of a clock power supply of a mobile terminal and the mobile terminal.
Background
The mobile terminal adopts a rechargeable battery to provide energy, and even in a power-off state, the battery still supplies power to the mobile terminal to maintain real-time clock timing, so that the time displayed by the mobile terminal when the mobile terminal is started next time is correct. However, in the daily use of the mobile terminal, some situations may occur to cause the battery to run out, for example, the battery is manually unplugged or the mobile terminal does not run out of the battery for a long time, in which case the real-time clock is powered by a capacitor, the energy in the capacitor is charged when the battery is charged, and when the battery is not charged, the capacitor is reversely discharged to power the real-time clock to maintain the timing of the mobile terminal. In the prior art, the capacitor is necessarily charged as long as the battery is charged, and the capacitor is usually in a charged state for a long time, so that the capacitor is easily aged, the capacity of the capacitor is finally influenced, and even the function of the capacitor is influenced.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a charging control method and system for a clock power supply of a mobile terminal, and a mobile terminal, aiming at overcoming the defects in the prior art, so as to solve the problem that the capacitance is easy to age and influence the capacitance capacity due to the long-time charging state of the existing capacitance.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a charging control method of a clock power supply of a mobile terminal comprises the following steps:
when the clock power supply is in a charging state, detecting whether the clock power supply is in a fully charged state at preset first time intervals;
when the clock power supply is in a full-charge state, the charging current of the clock power supply is adjusted according to a preset rule until the charging current is 0.
The charging control method of the clock power supply of the mobile terminal, wherein when the clock power supply is in a charging state, before detecting whether the clock power supply is in a fully charged state every preset first time, the method further comprises the following steps:
acquiring voltage values at two ends of the clock power supply twice at preset second time intervals, and comparing the voltage values acquired twice;
if the voltage values obtained in the two consecutive times are not equal, the clock power supply is judged to be in a charging state;
and if the voltage values obtained in two consecutive times are equal, determining that the clock power supply is in an uncharged state.
The charging control method of the clock power supply of the mobile terminal, wherein the step of detecting whether the clock power supply is in a fully charged state at every preset first time interval specifically comprises the following steps:
when the clock power supply is in a charging state, detecting voltage values at two ends of the clock power supply at preset first time intervals, and comparing the voltage values with preset voltage threshold values;
and if the voltage value is equal to the preset voltage threshold value, judging that the clock power supply is in a fully charged state.
The charging control method of the clock power supply of the mobile terminal further comprises the following steps:
if the voltage value is smaller than the preset voltage threshold value, determining that the clock power supply is in a state of not being fully charged;
and when the clock power supply is in an incompletely charged state, repeatedly executing the step of detecting the voltage value at the two ends of the clock power supply.
The charging control method for the clock power supply of the mobile terminal, wherein when the clock power supply is in a full-charge state, the adjusting of the charging current of the clock power supply according to a preset rule until the charging current is 0 specifically comprises:
when a clock power supply is in a fully charged state, reducing the input current of a resistor connected in series with the clock power supply by a preset current threshold value, and detecting the voltage values at two ends of the resistor;
and when the voltage values at the two ends of the resistor are not equal, repeating the step of reducing the input current of the resistor until the voltage values at the two ends of the resistor are equal, so that the charging current of the clock power supply is 0.
The charging control method of the clock power supply of the mobile terminal further comprises the following steps:
when the clock power supply is in a non-charging state, detecting the electric quantity of the clock power supply at every preset third time interval, and comparing the electric quantity with a preset first electric quantity threshold value;
and if the electric quantity is equal to a preset first electric quantity threshold value, repeating the step of detecting the electric quantity of the clock power supply.
The charging control method of the clock power supply of the mobile terminal further comprises the following steps:
if the electric quantity is smaller than a preset first electric quantity threshold value, comparing the electric quantity with a preset second electric quantity threshold value;
and if the electric quantity is smaller than a preset second electric quantity threshold value, charging the clock power supply.
The charging control method of the clock power supply of the mobile terminal is characterized in that the clock power supply is a capacitor.
A charging control system of a clock power supply of a mobile terminal, comprising: the clock power supply, the resistor connected with the clock power supply in series, the power management chip and the current adjusting module, wherein the power management chip is respectively connected with the clock power supply, the resistor and the current adjusting module, and the current adjusting module is connected with the clock power supply through the resistor;
the clock power supply is used for supplying power to the clock of the mobile terminal when the power supply of the mobile terminal does not supply power to the clock;
the power supply management chip is used for detecting whether the clock power supply is in a fully charged state or not at preset first time intervals when the clock power supply is in a charging state;
the current adjusting module is used for adjusting the charging current of the clock power supply according to a preset rule when the clock power supply is in a full-charge state until the charging current is 0.
A mobile terminal comprises the charging control system of the clock power supply of the mobile terminal.
Has the advantages that: compared with the prior art, the invention provides a charging control method and a charging control system for a clock power supply of a mobile terminal and the mobile terminal, wherein the charging control method comprises the following steps: when the clock power supply is in a charging state, detecting whether the clock power supply is in a fully charged state at preset first time intervals; when the clock power supply is in a full-charge state, the charging current of the clock power supply is adjusted according to a preset rule until the charging current is 0. The invention detects the charging state of the clock power supply at regular time and adjusts the charging current to be 0 when the clock power supply is in a full-charge state, so as to solve the problem that the capacitor is easy to age because the capacitor is in the charging state for a long time, the capacity of the capacitor is influenced finally, and even the function of the real-time clock is influenced in the prior art.
Drawings
Fig. 1 is a flowchart of a preferred implementation of a charging control method for a clock power supply of a mobile terminal according to the present invention.
Fig. 2 is a schematic structural diagram of a charging control system of a clock power supply of a mobile terminal according to the present invention.
Detailed Description
The invention provides a charging control method and system for a clock power supply of a mobile terminal and the mobile terminal, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The invention will be further explained by the description of the embodiments with reference to the drawings.
Referring to fig. 1, fig. 1 is a flowchart illustrating a charging control method for a clock power supply of a mobile terminal according to a preferred embodiment of the present invention. The method comprises the following steps:
s100, when the clock power supply is in a charging state, detecting whether the clock power supply is in a fully charged state at preset first time intervals;
and S200, when the clock power supply is in a fully charged state, adjusting the charging current of the clock power supply according to a preset rule until the charging current is 0.
The charging state of the clock power supply is detected at regular time and when the charging state is in a full power state, the charging current is adjusted to be 0, so that the problems that in the prior art, the capacitor is easy to age due to the fact that the capacitor is in the charging state for a long time, the capacity of the capacitor is influenced finally, and even the function of a real-time clock is influenced are solved.
Specifically, in the step S101, the clock power source refers to a rechargeable power source for supplying power to the clock of the mobile terminal, for example, a rechargeable battery, a capacitor, and the like. Preferably, the clock power supply is a capacitor, since the capacitor occupies a small space and the charge rate is low. For convenience of description, the present embodiment further describes the technical solution of the present invention by taking a clock power supply as an example. In practical application, when the power supply of the mobile terminal is powered on, the power supply of the mobile terminal supplies power to the clock, namely, the capacitor does not need to supply power to the clock at the moment; when the battery of the mobile terminal is removed or the power is exhausted, the clock is powered by means of the capacitor. Meanwhile, in the prior art, the capacitor can be charged as long as the battery is charged, so that the electric quantity of the capacitor is sufficient, but the capacitor is always in a charging state, so that the capacitor is easy to age and the capacity of the capacitor is influenced. Therefore, in order to avoid this problem, the present embodiment performs a corresponding operation by detecting whether the capacitor is in the charging state, and the step S100 further includes monitoring whether the capacitor is in the charging state, where the specific process includes:
s001, continuously obtaining voltage values at two ends of the clock power supply twice at preset second time intervals, and comparing the voltage values obtained continuously twice;
s002, if the voltage values obtained in the two consecutive times are not equal, determining that the clock power supply is in a charging state;
and S003, if the voltage values obtained in two consecutive times are equal, determining that the clock power supply is in an uncharged state.
Specifically, the preset second interval time is a preset capacitor voltage acquisition time. Because the voltage values at the two ends of the capacitor are in a changing state when the voltage is in a charging state, whether the capacitor is in the charging state is judged by continuously collecting the voltage values at the two ends of the capacitor twice. If the voltage values obtained twice are not equal, the capacitor (namely the clock power supply) is judged to be in a charging state; if the voltage values obtained in two consecutive times are equal, it is indicated that the voltage across the capacitor has not changed, and it is in an uncharged state.
Further, when the capacitor is determined to be in the charging state, it is determined whether the capacitor is in a fully charged state, wherein the fully charged state refers to a state in which the electric quantity of the capacitor is fully charged and reaches a maximum value. The present embodiment determines whether the capacitor is in a full power state by detecting the voltage value at two ends of the capacitor at regular time.
For example, when the clock power supply is in the charging state, the detecting whether the clock power supply is in the fully charged state every preset first time interval may specifically include:
s101, when a clock power supply is in a charging state, detecting voltage values at two ends of the clock power supply at intervals of a preset first time, and comparing the voltage values with a preset voltage threshold value;
and S102, if the voltage value is equal to the preset voltage threshold value, determining that the clock power supply is in a fully charged state.
Specifically, the preset first time is a preset detection time interval, for example, 1 minute, 10 minutes, and the like. It can be set according to the default of the system or the use condition of the mobile terminal. The preset voltage threshold refers to a maximum voltage value of a preset capacitor, for example, 3.6V. That is, when the voltage value across the capacitor is the preset voltage threshold, it indicates that the voltage value reaches the preset maximum value, that is, the capacitor is in a fully charged state. Therefore, the detected capacitor voltage value is compared with the preset voltage threshold, if the voltage value is equal to the preset voltage threshold, the capacitor voltage reaches the maximum value, and the capacitor voltage is judged to be in a full-charge state; and if the voltage value is smaller than the preset voltage threshold value, the voltage value is in an incompletely charged state.
In this embodiment, when the capacitor is in an insufficiently charged state, no operation is performed, the voltage values at the two ends of the capacitor are continuously collected at preset first time intervals, and then the comparison operation is performed. Therefore, the charge control method further includes:
s103, if the voltage value is smaller than the preset voltage threshold, determining that the clock power supply is in an incompletely charged state;
and S104, when the clock power supply is in a state of not fully charged, repeatedly executing the step of detecting the voltage values at the two ends of the clock power supply.
In an embodiment of the present invention, when it is determined that the capacitor is in the uncharged state, the current electric quantity of the capacitor is further obtained, and whether to start the charging procedure is determined according to the electric quantity condition, so as to ensure that the capacitor has electric charge, and meet the requirement of supplying power to the clock of the mobile terminal at any time. Therefore, the charge control method further includes:
s10, when the clock power supply is in a non-charging state, detecting the electric quantity of the clock power supply at intervals of a preset third time, and comparing the electric quantity with a preset first electric quantity threshold value;
and S20, if the electric quantity is equal to a preset first electric quantity threshold value, repeating the step of detecting the electric quantity of the clock power supply.
In particular, the uncharged state means that no charging current flows into the input of the capacitor. The preset third interval refers to a preset electric quantity detection time interval, such as 30S, 5min and the like. The first electric quantity threshold refers to a preset maximum electric quantity value of the capacitor, which may be an absolute value of the electric quantity or a percentage of the electric quantity to the total electric quantity. When the capacitor is in an uncharged state, acquiring the electric quantity value of the capacitor once every 30S, and comparing the electric quantity value with a preset first electric quantity threshold value. If the electric quantity value is equal to the first electric quantity threshold value, the capacitor is in a full-electric-quantity state, operation is not needed, the non-charging state is kept, and then the step of detecting the electric quantity is repeated. If the electric quantity value is smaller than the first electric quantity threshold, it indicates that the electric quantity of the capacitor is consumed in the uncharged state and is smaller than the maximum electric quantity value, at this time, step S30 is executed to further determine whether the procedure is a procedure that requires starting charging.
S30, if the electric quantity is smaller than a preset first electric quantity threshold value, comparing the electric quantity with a preset second electric quantity threshold value;
and S40, if the electric quantity is smaller than a preset second electric quantity threshold value, charging the clock power supply.
Specifically, the second power threshold refers to a preset minimum power value capable of supplying power to the clock, and may be determined according to an actual model of the mobile terminal, usage requirements, and the like. When the amount of power is less than the first power threshold, further, the amount of power is compared to the second power threshold. If the electric quantity is smaller than the second electric quantity threshold value, the current electric quantity cannot meet the requirement of supplying power for the clock, and at the moment, a charging program is started to charge the capacitor. If the electric quantity is larger than the second electric quantity threshold value, the current electric quantity meets the clock power supply requirement, charging is not needed temporarily, therefore, operation is not carried out, and the electric quantity of the capacitor is continuously detected. Therefore, the power value of the capacitor is detected at regular time in the uncharged state, so that the power-off processing is continued under the full-charge condition, and the capacitor is prevented from being always in the charged state; meanwhile, the problem of insufficient power supply of the clock caused by insufficient electric quantity of the capacitor is avoided.
In the step S200, the preset rule refers to a preset rule for adjusting the current charged into the capacitor, and in this embodiment, the preset rule reduces the current flowing into the input end of the capacitor by using a preset adjustment interval. In order to further confirm whether the capacitor is still being charged in a fully charged state, it is first detected whether a charging current flows into the capacitor.
For example, when the clock power supply is in a fully charged state, adjusting the charging current of the clock power supply according to a preset rule until the charging current is 0 may specifically include:
s201, when a clock power supply is in a fully charged state, reducing the input current of a resistor connected in series with the clock power supply by a preset current threshold value, and detecting the voltage values of two ends of the resistor;
s202, when the voltage values at the two ends of the resistor are not equal, repeating the step of reducing the input current of the resistor until the voltage values at the two ends of the resistor are equal, so that the charging current of the clock power supply is 0.
Specifically, in step S201, it is determined whether the current charged in the capacitor is 0 by detecting the voltage value across a resistor connected in series with the clock power source (i.e., the capacitor). And if the input end voltage value is equal to the output end voltage value, the potential at the two ends of the resistor is not reduced, namely the current flowing through the resistor is 0. Since the resistor is connected in series with the capacitor, it means that the current charged in the capacitor is 0, i.e. the capacitor is not charged in the fully charged state, and therefore is not operated. If the voltage value of the input end is larger than the voltage value of the output end, the potential at two ends of the short circuit is reduced, namely the current flowing through the resistor is larger than 0, and the current charged into the capacitor is larger than 0. That is, when the capacitor is fully charged and the charging is continued, step S202 is performed to reduce the charging current flowing into the input terminal of the resistor until the charging current is 0, and the charging of the capacitor is stopped.
Specifically, in the step S202, the preset current threshold refers to a preset current value that is decreased each time, for example, the preset current threshold of 10mA refers to a current value that is charged into the capacitor that is decreased by 10mA each time. When the voltages at the two ends of the resistor are not equal, reducing the current value flowing into the resistor by the adjustment interval, detecting the voltage value of the input end and the voltage value of the output end at the two ends of the resistor after adjustment, and then comparing the two rules; if the voltage value of the input end is equal to the voltage value of the output end, the current charged into the capacitor is already 0, and the current does not need to be continuously adjusted; if the voltage value of the input end is greater than the voltage value of the output end, the current value of the charged capacitor is still greater than 0, namely, the charging current still flows into the capacitor to charge the capacitor, at the moment, the current value of the charged capacitor is continuously reduced until the voltage value of the input end of the resistor is equal to the voltage value of the output end, namely, the current value of the charged capacitor is 0, so that the capacitor is stopped to be charged when the capacitor is in a full-charge state, and the service life of the capacitor is prolonged. Meanwhile, the mode of gradually reducing the charging current is adopted, so that the phenomenon that the loss probability of components such as the capacitor is increased due to the sudden drop of the current flowing into the capacitor is avoided. In practical application, an adjustable resistor can be connected in parallel with a capacitor to reduce the current value charged into the capacitor until the capacitor is stopped being charged.
The present invention also provides a charging control system of a clock power supply of a mobile terminal, as shown in fig. 2, which includes: the clock power supply circuit comprises a clock power supply 100, a resistor 200 connected with the clock power supply in series, a power management chip 300 and a current adjusting module 400, wherein the power management chip 300 is respectively connected with the clock power supply 100, the resistor 200 and the current adjusting module 400, and the current adjusting module 400 is connected with the clock power supply 100 through the resistor 200;
the clock power supply 100 is used for supplying power to a clock of the mobile terminal;
the power management chip 300 is configured to detect whether the clock power source is in a fully charged state every preset first time interval;
the current adjusting module 400 is configured to adjust a charging current of the clock power supply according to a preset rule when the clock power supply is in a fully charged state until the charging current is 0.
In the charging control system of the mobile terminal clock power supply, the power management chip 300 includes a voltage comparison module 301 and a voltage acquisition module 302. The capacitance voltage acquisition module is used for acquiring capacitance voltage, and more particularly, is used for acquiring voltage values at two ends of a capacitance internal electric quantity storage region, and the voltage values are directly connected with a capacitance anode. The voltage comparison module judges whether current flows into the capacitor according to the voltage difference between two ends of the resistor, controls the discharge setting module to increase the discharge current of the discharge module when the current flows into the capacitor until no current flows into the capacitor, and then controls the capacitor voltage acquisition module to acquire the capacitor voltage. The input ends IN1 and IN2 of the voltage comparison module 301 are connected with two ends of a resistor, the output end OUT1 is connected with a current regulation module, the output end OUT2 is connected with the voltage acquisition module 302, and the capacitance voltage acquisition module is connected with the clock power supply; two ends of the resistor are respectively connected with two input ends of the voltage comparison module, and an output end of the voltage comparison module is connected with the current adjustment module.
The invention also provides a mobile terminal which comprises the charging control system of the clock power supply of the mobile terminal.
In the embodiments provided by the present invention, it should be understood that the disclosed system and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or 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.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will 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; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A charging control method of a clock power supply of a mobile terminal is characterized by comprising the following steps:
when the clock power supply is in a charging state, detecting whether the clock power supply is in a fully charged state at preset first time intervals;
when the clock power supply is in a full-charge state, adjusting the charging current of the clock power supply according to a preset rule until the charging current is 0;
when the clock power supply is in a fully charged state, adjusting the charging current of the clock power supply according to a preset rule until the charging current is 0 specifically comprises:
when a clock power supply is in a fully charged state, reducing the input current of a resistor connected in series with the clock power supply by a preset current threshold value, and detecting the voltage values at two ends of the resistor;
and when the voltage values at the two ends of the resistor are not equal, repeating the step of reducing the input current of the resistor until the voltage values at the two ends of the resistor are equal, so that the charging current of the clock power supply is 0.
2. The method for controlling charging of a clock power supply of a mobile terminal according to claim 1, wherein before detecting whether the clock power supply is in a fully charged state every preset first time when the clock power supply is in a charging state, the method further comprises:
acquiring voltage values at two ends of the clock power supply twice at preset second time intervals, and comparing the voltage values acquired twice;
if the voltage values obtained in the two consecutive times are not equal, the clock power supply is judged to be in a charging state;
and if the voltage values obtained in two consecutive times are equal, determining that the clock power supply is in an uncharged state.
3. The method for controlling charging of a clock power supply of a mobile terminal according to claim 1, wherein the step of detecting whether the clock power supply is in a fully charged state every preset first time interval specifically comprises:
when the clock power supply is in a charging state, detecting voltage values at two ends of the clock power supply at preset first time intervals, and comparing the voltage values with preset voltage threshold values;
and if the voltage value is equal to the preset voltage threshold value, judging that the clock power supply is in a fully charged state.
4. The method for controlling charging of a clock power supply of a mobile terminal according to claim 3, further comprising:
if the voltage value is smaller than a preset voltage threshold value, determining that the clock power supply is in a state of not being fully charged;
and when the clock power supply is in an incompletely charged state, repeatedly executing the step of detecting the voltage value at the two ends of the clock power supply.
5. The method for controlling charging of a clock power supply of a mobile terminal according to claim 1 or 2, further comprising:
when the clock power supply is in a non-charging state, detecting the electric quantity of the clock power supply at every preset third time interval, and comparing the electric quantity with a preset first electric quantity threshold value;
and if the electric quantity is equal to a preset first electric quantity threshold value, repeating the step of detecting the electric quantity of the clock power supply.
6. The method for controlling charging of a clock power supply of a mobile terminal according to claim 5, further comprising:
if the electric quantity is smaller than a preset first electric quantity threshold value, comparing the electric quantity with a preset second electric quantity threshold value;
and if the electric quantity is smaller than a preset second electric quantity threshold value, charging the clock power supply.
7. The method for controlling charging of a clock power supply of a mobile terminal according to claim 6, wherein the clock power supply is a capacitor.
8. A charging control system of a clock power supply of a mobile terminal is characterized by comprising: the clock power supply, the resistor connected with the clock power supply in series, the power management chip and the current adjusting module, wherein the power management chip is respectively connected with the clock power supply, the resistor and the current adjusting module, and the current adjusting module is connected with the clock power supply through the resistor;
the clock power supply is used for supplying power to the clock of the mobile terminal when the power supply of the mobile terminal does not supply power to the clock;
the power supply management chip is used for detecting whether the clock power supply is in a fully charged state or not at preset first time intervals when the clock power supply is in a charging state;
the current adjusting module is used for adjusting the charging current of the clock power supply according to a preset rule when the clock power supply is in a fully charged state until the charging current is 0;
when the clock power supply is in a fully charged state, adjusting the charging current of the clock power supply according to a preset rule until the charging current is 0 specifically comprises:
when a clock power supply is in a fully charged state, reducing the input current of a resistor connected in series with the clock power supply by a preset current threshold value, and detecting the voltage values at two ends of the resistor;
and when the voltage values at the two ends of the resistor are not equal, repeating the step of reducing the input current of the resistor until the voltage values at the two ends of the resistor are equal, so that the charging current of the clock power supply is 0.
9. A mobile terminal characterized in that it comprises a charging control system of a mobile terminal clock supply according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897788.4A CN107453454B (en) | 2017-09-28 | 2017-09-28 | Charging control method and system of clock power supply of mobile terminal and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897788.4A CN107453454B (en) | 2017-09-28 | 2017-09-28 | Charging control method and system of clock power supply of mobile terminal and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
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| CN107453454A CN107453454A (en) | 2017-12-08 |
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| CN112421747A (en) * | 2020-12-04 | 2021-02-26 | 安徽信息工程学院 | Automatic clock that charges |
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