CN104167795A - Mobile terminal and charge control method thereof - Google Patents
Mobile terminal and charge control method thereof Download PDFInfo
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- CN104167795A CN104167795A CN201410413497.XA CN201410413497A CN104167795A CN 104167795 A CN104167795 A CN 104167795A CN 201410413497 A CN201410413497 A CN 201410413497A CN 104167795 A CN104167795 A CN 104167795A
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- mobile terminal
- battery
- resistance
- internal resistance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to the technical field of mobile terminals and provides a mobile terminal and a charge control method of the mobile terminal. The charge control method comprises the following steps that in the process of charging the mobile terminal at a constant voltage, the internal resistance of a battery of the mobile terminal is detected; according to the internal resistance of the battery of the mobile terminal, the resistance value of a slide rheostat in parallel connection with a branch circuit where the battery of the mobile terminal is located is regulated to be the same as the resistance value of the branch circuit where the battery of the mobile terminal is located, so that the resistance value in a charging circuit is minimum; at the moment, the charging current to the battery of the mobile terminal is maximum, and the speed of constant-voltage charging is increased.
Description
Technical field
The present invention relates to technical field of mobile terminals, relate in particular to a kind of mobile terminal and charge control method thereof.
Background technology
Along with the development of mobile device and universal, the practicality of mobile terminal and recreational more and more stronger, user uses the time of mobile terminal also more and more longer every day, therefore, user also more and more values the charge condition of mobile terminal, mobile device ubiquity charges slowly and the fast problem of power consumption at present, in order to solve this difficult problem, the main mode that increases battery capacity and improve constant-current phase charging current that adopts solves this problem in the industry, in addition, some product that also has has on the market used the technology of filling soon, be charged to 90% electric weight from 1% electric weight and only need 40 minutes, but being charged to 100%, 90% electric weight but needs half an hour.In sum, the mobile terminal existing in the prior art slow problem of charging in charging process.
Summary of the invention
The object of the present invention is to provide a kind of mobile terminal and charge control method thereof, be intended to solve for the mobile terminal existing in the prior art slow problem of charging in charging process.
The present invention is achieved in that a kind of charge control method of mobile terminal, and described charge control method comprises the following steps:
Mobile terminal being carried out in the process of constant voltage charge, detect the internal resistance of the battery of mobile terminal;
According to the internal resistance of the battery of described mobile terminal, the resistance of the slide rheostat being in parallel with the branch road at the battery place of described mobile terminal is adjusted to the resistance of the branch road at the battery place of described mobile terminal identical.
Before detecting the step of internal resistance of the battery of mobile terminal in the described process mobile terminal being carried out to constant voltage charge, also comprise:
Battery to mobile terminal is tested, and obtains the corresponding relation between the electric weight of battery of described mobile terminal and the internal resistance of the battery of temperature and described mobile terminal.
The step of the internal resistance of the battery of described detection mobile terminal is specially:
Detect temperature and the electric weight of the battery of mobile terminal;
According to the corresponding relation between the internal resistance of the battery of the temperature of the battery of described mobile terminal and electric weight and described mobile terminal, obtain the current internal resistance of the battery of mobile terminal.
The resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of described mobile terminal is described mobile terminal.
The resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of described mobile terminal is described mobile terminal and the resistance sum that is arranged on the current sense resistor on described branch road.
A kind of mobile terminal of the another kind of embodiment of the present invention, described mobile terminal comprises:
Detecting unit, mobile terminal being carried out in the process of constant voltage charge, detects the internal resistance of the battery of mobile terminal;
Control unit, according to the internal resistance of the battery of described mobile terminal, is adjusted to the resistance of the branch road at the battery place of described mobile terminal identical by the resistance of the slide rheostat being in parallel with the branch road at the battery place of described mobile terminal.
Described mobile terminal also comprises memory cell, the corresponding relation described in described cell stores between the electric weight of battery of mobile terminal and the internal resistance of the battery of temperature and described mobile terminal.
The internal resistance that described detecting unit detects the battery of mobile terminal is specially:
Detect temperature and the electric weight of the battery of mobile terminal;
Obtain the current internal resistance of battery of mobile terminal according to the corresponding relation between the internal resistance of the battery of the temperature of the battery of described mobile terminal and electric weight and described mobile terminal.
The resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of described mobile terminal is described mobile terminal.
On the branch road at the battery place of described mobile terminal, be also provided with current sense resistor, the resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of described mobile terminal is described mobile terminal and the resistance sum that is arranged on the current sense resistor on described branch road.
Mobile terminal provided by the invention and charging method thereof, according to the internal resistance of the battery of detection mobile terminal, regulate the resistance of slide rheostat, make the resistance of two branch roads parallel with one another in charging circuit identical, the total resistance minimum of circuit obtaining, make charging current maximum, improved the speed of constant voltage charge.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart of the charge control method of a kind of mobile terminal of providing of an embodiment of the present invention;
Fig. 2 is the equivalent circuit diagram in the charge control method of a kind of mobile terminal of providing of an embodiment of the present invention;
Fig. 3 is the equivalent circuit diagram in the charge control method of a kind of mobile terminal of providing of the another kind of embodiment of the present invention;
Fig. 4 is a kind of mobile terminal structure schematic diagram that the another kind of embodiment of the present invention provides;
Fig. 5 is a kind of mobile terminal structure schematic diagram that the another kind of embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
For technical scheme of the present invention is described, describe below by specific embodiment.
An embodiment of the present invention provides a kind of charge control method of mobile terminal, and charge control method comprises the following steps:
S101. mobile terminal being carried out in the process of constant voltage charge, detect the internal resistance of the battery of mobile terminal.
In the present embodiment, mobile terminal can be arbitrarily, can with the electronic installation of other devices communicatings, including, but not limited to the combination of PC, handheld device, electronic plane, personal digital assistant (PDA), mobile phone, network home appliance, camera, video camera, smart mobile phone, network base station, media player, navigator, electronic mail equipment, game station, automatic information system (such as the entertainment systems with control panel) and aforementioned device.
In the present embodiment, mobile terminal is carried out to constant voltage charge and refer to that employing adapter or charger charge to mobile terminal, wherein, constant voltage charge refers to that the voltage of adapter or charger output fixes, along with mobile terminal reduces the mode of charging current gradually.
In the present embodiment, the internal resistance that detects the battery of mobile terminal refers to the internal resistance of the battery of real-time detection mobile terminal, because in the process of charging, the internal resistance of the battery of mobile terminal changes along with the variation of charging process, therefore needs the internal resistance of the battery that detects in real time mobile terminal.
Further, before step S101, also comprise:
Battery to mobile terminal is tested, and obtains the corresponding relation between the electric weight of battery of mobile terminal and the internal resistance of the battery of temperature and mobile terminal.
In the present embodiment, first adopt electric weight and the temperature of the battery of hardware device to mobile terminal to test, then the internal resistance of the battery of testing mobile terminal at this electric weight and temperature, specifically can measure the current voltage and current of battery of mobile terminal, to obtain the current internal resistance of battery of mobile terminal.
Through test, as shown in table 1, can obtain the corresponding relation of the current internal resistance value of battery of mobile terminal electric weight and temperature and mobile terminal, wherein transverse axis is temperature value, the longitudinal axis is charge value, can draw the current internal resistance value of battery of corresponding mobile terminal at current electric quantity and temperature according to current temperature value and electric weight percentage.
The corresponding relation of the current internal resistance value of battery of the battery electric quantity of table 1 mobile terminal and temperature and mobile terminal
Further, the step of the internal resistance of the battery of detection mobile terminal is specially:
Detect temperature and the electric weight of the battery of mobile terminal;
Draw the current internal resistance of battery of mobile terminal according to the corresponding relation between the internal resistance of the battery of the temperature of the battery of mobile terminal and electric weight and mobile terminal.
In the present embodiment, for example, Current Temperatures is 25 degree, and the electric weight percentage of the battery of mobile terminal is 90%, and according to table 1, the now internal resistance of the battery of mobile terminal is 108 milliohms.
Step S102. is according to the internal resistance of the battery of mobile terminal, and the resistance of the slide rheostat being in parallel with the branch road at the battery place of institute terminal is adjusted to the resistance of the branch road at the battery place of mobile terminal identical.
In the present embodiment, when in charging circuit, the resistance of two branch roads parallel with one another is identical, the all-in resistance resistance minimum obtaining, now charging current maximum, therefore, regulate in real time the resistance of slide rheostat according to the internal resistance of the battery of mobile terminal, make charging current maximum, can improve the speed of constant voltage charge.
Concrete, a kind of execution mode of step S102 is specially:
Regulate the resistance of slide rheostat, make the internal resistance of the resistance of slide rheostat and the battery of mobile terminal and the resistance of detection resistance and identical.
As shown in Figure 2, the battery charge of mobile terminal can be equivalent to following circuit structure, wherein Vcharger is the voltage that adapter outputs to battery-end, and Ibat is the electric current that flows into the battery of mobile terminal, and Rb is the internal resistance of cell, electric weight and temperature correlation with battery, Rsense is the resistance that detects electric current, is a fixed resistance value, the resistance that Rx is slide rheostat, therefore, can obtain following formula:
Vcharger＝Vbat+Ibat*((Rb+Rsense)||Rx) EQ(1)
Because this circuit adopts constant voltage charge, therefore Vcharger fixes, and Vbat also changes not quite.
And Rb changes along with the variation of battery electric quantity and temperature, but when electric weight and temperature are when known, can accurately calculate the value of Rb.
From formula EQ (1), as (Rb+Rsense) || Rx hour, Ibat maximum, charging rate is the fastest.In the time of Rx=Rb+Rsense, (Rb+Rsense) || Rx minimum, now the fastest to mobile terminal charging rate.
Because Rb is along with the variation of charging process changes, Rx is arranged to a dynamic adjustable value.
In the present invention, Rx is the slide rheostat of an i2c interface, and according to the difference of Rb, real-time regulates its resistance size by i2c, makes the impedance on circuit minimum, and the charging current maximum of the battery to mobile terminal has improved the speed of constant voltage charge.
The another kind of execution mode of step S102, as shown in Figure 3, is specially:
The resistance that regulates slide rheostat, makes the internal resistance of the resistance of slide rheostat and the battery of mobile terminal identical.Now, the resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of mobile terminal is mobile terminal, only need to regulate the resistance of internal resistance of the resistance of slide rheostat and the battery of mobile terminal identical, make the impedance on circuit minimum, the charging current maximum of the battery to mobile terminal.
The present invention another kind of embodiment provide a kind of mobile terminal, and mobile terminal comprises:
Detecting unit 201, mobile terminal being carried out in the process of constant voltage charge, detects the internal resistance of the battery of mobile terminal;
Control unit 202, according to the internal resistance of the battery of mobile terminal, is adjusted to the resistance of the branch road at the battery place of mobile terminal identical by the resistance of the slide rheostat being in parallel with the branch road at the battery place of mobile terminal.
Mobile terminal also comprises memory cell 203, the corresponding relation between the electric weight of the battery of memory cell 203 memory mobile terminals and the internal resistance of the battery of temperature and mobile terminal.
The internal resistance that detecting unit 201 detects the battery of mobile terminal is specially:
Detect temperature and the electric weight of the battery of mobile terminal;
Obtain the current internal resistance of battery of mobile terminal according to the corresponding relation between the internal resistance of the battery of the temperature of the battery of mobile terminal and electric weight and mobile terminal.
A kind of execution mode, the resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of mobile terminal is mobile terminal.
Another kind of execution mode, on the branch road at the battery place of mobile terminal, be also provided with current sense resistor, the resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of described mobile terminal is mobile terminal and the resistance sum that is arranged on the current sense resistor on branch road.
Mobile terminal provided by the invention and charging method thereof, according to the internal resistance of the battery of detection mobile terminal, regulate the resistance of slide rheostat, make the resistance of two branch roads parallel with one another in charging circuit identical, the total resistance minimum of circuit obtaining, make charging current maximum, improved the speed of constant voltage charge.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make without departing from the inventive concept of the premise some alternative or obvious modification that are equal to; and performance or purposes identical, all should be considered as belonging to the present invention by the definite scope of patent protection of submitted to claims.
Claims (10)
1. a charge control method for mobile terminal, is characterized in that, described charge control method comprises the following steps:
Mobile terminal being carried out in the process of constant voltage charge, detect the internal resistance of the battery of mobile terminal;
According to the internal resistance of the battery of described mobile terminal, the resistance of the slide rheostat being in parallel with the branch road at the battery place of described mobile terminal is adjusted to the resistance of the branch road at the battery place of described mobile terminal identical.
2. charge control method as claimed in claim 1, is characterized in that, also comprises before detecting the step of internal resistance of the battery of mobile terminal in the described process mobile terminal being carried out to constant voltage charge:
Battery to mobile terminal is tested, and obtains the corresponding relation between the electric weight of battery of described mobile terminal and the internal resistance of the battery of temperature and described mobile terminal.
3. charge control method as claimed in claim 2, is characterized in that, the step of the internal resistance of the battery of described detection mobile terminal is specially:
Detect temperature and the electric weight of the battery of mobile terminal;
According to the corresponding relation between the internal resistance of the battery of the temperature of the battery of described mobile terminal and electric weight and described mobile terminal, obtain the current internal resistance of the battery of mobile terminal.
4. charge control method as claimed in claim 1, is characterized in that, the resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of described mobile terminal is described mobile terminal.
5. charge control method as claimed in claim 1, is characterized in that, the resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of described mobile terminal is described mobile terminal and the resistance sum that is arranged on the current sense resistor on described branch road.
6. a mobile terminal, is characterized in that, described mobile terminal comprises:
Detecting unit, mobile terminal being carried out in the process of constant voltage charge, detects the internal resistance of the battery of mobile terminal;
Control unit, according to the internal resistance of the battery of described mobile terminal, is adjusted to the resistance of the branch road at the battery place of described mobile terminal identical by the resistance of the slide rheostat being in parallel with the branch road at the battery place of described mobile terminal.
7. mobile terminal as claimed in claim 6, is characterized in that, described mobile terminal also comprises memory cell, the corresponding relation described in described cell stores between the electric weight of battery of mobile terminal and the internal resistance of the battery of temperature and described mobile terminal.
8. mobile terminal as claimed in claim 7, is characterized in that, the internal resistance that described detecting unit detects the battery of mobile terminal is specially:
Detect temperature and the electric weight of the battery of mobile terminal;
Obtain the current internal resistance of battery of mobile terminal according to the corresponding relation between the internal resistance of the battery of the temperature of the battery of described mobile terminal and electric weight and described mobile terminal.
9. mobile terminal as claimed in claim 6, is characterized in that, the resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of described mobile terminal is described mobile terminal.
10. mobile terminal as claimed in claim 6, it is characterized in that, on the branch road at the battery place of described mobile terminal, be also provided with current sense resistor, the resistance of the internal resistance of the battery that the resistance of the branch road at the battery place of described mobile terminal is described mobile terminal and the resistance sum that is arranged on the current sense resistor on described branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410413497.XA CN104167795B (en) | 2014-08-20 | 2014-08-20 | A kind of mobile terminal and its charge control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410413497.XA CN104167795B (en) | 2014-08-20 | 2014-08-20 | A kind of mobile terminal and its charge control method |
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| Publication Number | Publication Date |
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| CN104167795A true CN104167795A (en) | 2014-11-26 |
| CN104167795B CN104167795B (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410413497.XA Expired - Fee Related CN104167795B (en) | 2014-08-20 | 2014-08-20 | A kind of mobile terminal and its charge control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106856153A (en) * | 2015-12-09 | 2017-06-16 | 本田技研工业株式会社 | Charging current establishing method, charging method, charging device and actuator |
| WO2018129976A1 (en) * | 2017-01-13 | 2018-07-19 | 广东欧珀移动通信有限公司 | Charging control method, apparatus and system, storage medium, and terminal |
| CN111416412A (en) * | 2020-04-20 | 2020-07-14 | Oppo广东移动通信有限公司 | Charging control method and device and terminal equipment |
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| CN101436783A (en) * | 2008-12-10 | 2009-05-20 | 深圳华为通信技术有限公司 | Charging circuit and device |
| CN103683347A (en) * | 2012-09-12 | 2014-03-26 | 成都天宇创新科技有限公司 | Simple charge controller of low-voltage vanadium battery |
| CN103825060A (en) * | 2014-02-28 | 2014-05-28 | 清华大学 | Battery low-temperature preheating and charging method |
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Patent Citations (4)
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| JP2004152755A (en) * | 2002-10-11 | 2004-05-27 | Canon Inc | Internal resistance detection method of secondary battery, internal resistance detecting device, internal resistance detection program, and medium storing the program |
| CN101436783A (en) * | 2008-12-10 | 2009-05-20 | 深圳华为通信技术有限公司 | Charging circuit and device |
| CN103683347A (en) * | 2012-09-12 | 2014-03-26 | 成都天宇创新科技有限公司 | Simple charge controller of low-voltage vanadium battery |
| CN103825060A (en) * | 2014-02-28 | 2014-05-28 | 清华大学 | Battery low-temperature preheating and charging method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856153A (en) * | 2015-12-09 | 2017-06-16 | 本田技研工业株式会社 | Charging current establishing method, charging method, charging device and actuator |
| CN106856153B (en) * | 2015-12-09 | 2019-12-20 | 本田技研工业株式会社 | Charging current setting method, charging device, and actuator |
| WO2018129976A1 (en) * | 2017-01-13 | 2018-07-19 | 广东欧珀移动通信有限公司 | Charging control method, apparatus and system, storage medium, and terminal |
| CN111416412A (en) * | 2020-04-20 | 2020-07-14 | Oppo广东移动通信有限公司 | Charging control method and device and terminal equipment |
| CN111416412B (en) * | 2020-04-20 | 2022-03-15 | Oppo广东移动通信有限公司 | Charging control method and device and terminal equipment |
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| CN104167795B (en) | 2018-03-27 |
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Address after: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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