CN104167795B - A kind of mobile terminal and its charge control method - Google Patents
A kind of mobile terminal and its charge control method Download PDFInfo
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- CN104167795B CN104167795B CN201410413497.XA CN201410413497A CN104167795B CN 104167795 B CN104167795 B CN 104167795B CN 201410413497 A CN201410413497 A CN 201410413497A CN 104167795 B CN104167795 B CN 104167795B
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- mobile terminal
- battery
- resistance
- internal resistance
- branch road
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The present invention relates to technical field of mobile terminals, the present invention provides a kind of mobile terminal and its charge control method, charge control method and comprised the following steps：During constant-voltage charge is carried out to mobile terminal, the internal resistance of the battery of mobile terminal is detected；According to the internal resistance of the battery of the mobile terminal, the resistance for the slide rheostat being in parallel with the branch road where the battery of the mobile terminal is adjusted to identical with the resistance of the branch road where the battery of the mobile terminal, make the resistance value in charging circuit minimum, it is now maximum to the charging current of the battery of mobile terminal, improve the speed of constant-voltage charge.
Description
Technical field
The present invention relates to technical field of mobile terminals, more particularly to a kind of mobile terminal and its charge control method.
Background technology
With the development and popularization of mobile device, the practicality of mobile terminal and recreational increasingly stronger, the every angel of user
Also increasingly longer with the time of mobile terminal, therefore, user also increasingly values the charge condition of mobile terminal, and movement at present is set
The problem of standby generally existing charging is slowly and power consumption is fast, in order to solve this problem, in the industry it is main using increase battery capacity and
The mode for improving constant-current phase charging current solves this problem, in addition, on the market also have some products to use fast charge
Technology, i.e., being charged to 90% electricity from 1% electricity only needs 40 minutes, but 90% electricity, which is charged to 100%, but needs half an hour.
In summary, mobile terminal present in prior art charges the problem of slow in charging process.
The content of the invention
It is an object of the invention to provide a kind of mobile terminal and its charge control method, it is intended to which solution is directed to prior art
Present in mobile terminal charged in charging process the problem of slow.
The present invention is achieved in that a kind of charge control method of mobile terminal, the charge control method include with
Lower step：
During constant-voltage charge is carried out to mobile terminal, the internal resistance of the battery of mobile terminal is detected；
According to the internal resistance of the battery of the mobile terminal, by what is be in parallel with the branch road where the battery of the mobile terminal
The resistance of slide rheostat is adjusted to identical with the resistance of the branch road where the battery of the mobile terminal.
It is described to mobile terminal carry out constant-voltage charge during detect mobile terminal battery internal resistance the step of it
It is preceding also to include：
The battery of mobile terminal is tested, obtains electricity and temperature and the movement of the battery of the mobile terminal
Corresponding relation between the internal resistance of the battery of terminal.
It is described detection mobile terminal battery internal resistance the step of be specially：
Detect the temperature and electricity of the battery of mobile terminal；
According to pair between the internal resistance of the temperature of the battery of the mobile terminal and electricity and the battery of the mobile terminal
It should be related to, obtain the current internal resistance of the battery of mobile terminal.
The resistance of branch road where the battery of the mobile terminal is the resistance of the internal resistance of the battery of the mobile terminal.
The resistance of branch road where the battery of the mobile terminal for the mobile terminal battery internal resistance resistance and
The resistance sum for the current sense resistor being arranged on the branch road.
A kind of another mobile terminal of embodiment of the present invention, the mobile terminal include：
Detection unit, during constant-voltage charge is carried out to mobile terminal, detect the internal resistance of the battery of mobile terminal；
Control unit, according to the internal resistance of the battery of the mobile terminal, by the branch where with the battery of the mobile terminal
The resistance for the slide rheostat that road is in parallel is adjusted to identical with the resistance of the branch road where the battery of the mobile terminal.
The mobile terminal also includes memory cell, the memory cell store the battery of the mobile terminal electricity and
Corresponding relation between the internal resistance of the battery of temperature and the mobile terminal.
The internal resistance of the battery of detection unit detection mobile terminal is specially：
Detect the temperature and electricity of the battery of mobile terminal；
According to pair between the internal resistance of the temperature of the battery of the mobile terminal and electricity and the battery of the mobile terminal
Answer the current internal resistance of the battery of Relation acquisition mobile terminal.
The resistance of branch road where the battery of the mobile terminal is the resistance of the internal resistance of the battery of the mobile terminal.
Current sense resistor, the battery institute of the mobile terminal are additionally provided with branch road where the battery of the mobile terminal
Branch road resistance for the mobile terminal battery internal resistance resistance and be arranged on the branch road current detecting electricity
The resistance sum of resistance.
Mobile terminal provided by the invention and its charging method, according to the internal resistance of the battery of detection mobile terminal, regulation is slided
Rheostatic resistance is moved, makes the resistance of two branch roads parallel with one another in charging circuit identical, the total resistance resistance of obtained circuit
Value is minimum, makes charging current maximum, improves the speed of constant-voltage charge.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is a kind of flow chart of the charge control method for mobile terminal that an embodiment of the present invention provides；
Fig. 2 is the equivalent circuit diagram in a kind of charge control method for mobile terminal that an embodiment of the present invention provides；
Fig. 3 is the equivalent circuit in a kind of charge control method for mobile terminal that another embodiment of the present invention provides
Figure；
Fig. 4 is a kind of mobile terminal structure schematic diagram that another embodiment of the present invention provides；
Fig. 5 is a kind of mobile terminal structure schematic diagram that another embodiment of the present invention provides.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical scheme, illustrated below by specific embodiment.
An embodiment of the present invention provides a kind of charge control method of mobile terminal, and charge control method includes following step
Suddenly：
S101. during constant-voltage charge is carried out to mobile terminal, the internal resistance of the battery of mobile terminal is detected.
In the present embodiment, mobile terminal can be electronic installation that is arbitrary, being communicated with other equipment, including but
It is not limited to：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, navigation equipment, electronic mail equipment, game station, automated information
The combination of system (such as entertainment systems with control panel) and aforementioned device.
In the present embodiment, constant-voltage charge is carried out to mobile terminal to refer to using adapter or charger to mobile terminal
Charged, wherein, constant-voltage charge refers to adapter or the voltage of charger output is fixed, and is filled as mobile terminal is gradually reduced
The mode of electric current.
In the present embodiment, the internal resistance for detecting the battery of mobile terminal refers to the interior of the battery for detecting mobile terminal in real time
Resistance, because during charging, the internal resistance of the battery of mobile terminal changes with the change of charging process, it is therefore desirable to real
When detect mobile terminal battery internal resistance.
Further, also include before step S101：
The battery of mobile terminal is tested, obtains the electricity and the electricity of temperature and mobile terminal of the battery of mobile terminal
Corresponding relation between the internal resistance in pond.
In the present embodiment, the electricity and temperature of the battery of mobile terminal are tested using hardware device first, so
Internal resistance of the battery of mobile terminal in the electricity with a temperature of is tested afterwards, can specifically measure the current electricity of the battery of mobile terminal
Pressure and electric current, to obtain the current internal resistance of the battery of mobile terminal.
By test, as shown in table 1, the current internal resistance of battery of mobile terminal electricity and temperature and mobile terminal can be obtained
The corresponding relation of value, wherein transverse axis are temperature value, and the longitudinal axis is charge value, can be obtained according to current temperature value and electricity percentage
Go out the current internal resistance value of the battery of current electric quantity mobile terminal corresponding with a temperature of.
The corresponding relation of the current internal resistance value of battery electric quantity and the battery of temperature and mobile terminal of the mobile terminal of table 1
Further, the step of internal resistance for detecting the battery of mobile terminal is specially：
Detect the temperature and electricity of the battery of mobile terminal；
Obtained according to the corresponding relation between the internal resistance of the temperature of the battery of mobile terminal and the battery of electricity and mobile terminal
Go out the current internal resistance of the battery of mobile terminal.
In the present embodiment, for example, Current Temperatures are 25 degree, the electricity percentage of the battery of mobile terminal is 90%, root
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, by what is be in parallel with the branch road where the battery of institute terminal
The resistance of slide rheostat is adjusted to identical with the resistance of the branch road where the battery of mobile terminal.
In the present embodiment, when the resistance of two branch roads parallel with one another in charging circuit is identical, obtained all-in resistance hinders
Value is minimum, and now charging current is maximum, therefore, adjusts the resistance of slide rheostat in real time according to the internal resistance of the battery of mobile terminal
Value, make charging current maximum, the speed of constant-voltage charge can be improved.
Specifically, a kind of step S102 embodiment is specially：
The resistance of slide rheostat is adjusted, makes internal resistance and the detection electricity of the resistance of slide rheostat and the battery of mobile terminal
The resistance of resistance and identical.
As shown in Fig. 2 the battery charge of mobile terminal can be equivalent to circuits below structure, wherein Vcharger
The voltage of battery-end is output to for adapter, Ibat is the electric current for the battery for flowing into mobile terminal, and Rb is the internal resistance of cell, with battery
Electricity be temperature dependent, Rsense is the resistance of detection electric current, is a fixed resistance value, and Rx is the resistance of slide rheostat,
Therefore, equation below can be obtained：
Vcharger=Vbat+Ibat* ((Rb+Rsense) | | Rx) EQ (1)
Because the circuit uses constant-voltage charge, therefore Vcharger is fixed, and Vbat also changes less.
And Rb changes with the change of battery electric quantity and temperature, but when known to electricity and temperature, can accurately calculate
Go out Rb value.
From formula EQ (1), as (Rb+Rsense) | | during Rx minimums, Ibat is maximum, and charging rate is most fast.Work as Rx=
During Rb+Rsense, (Rb+Rsense) | | Rx is minimum, now most fast to mobile terminal charging rate.
Because Rb changes with the change of charging process, Rx is arranged to a dynamic adjustable value.
Rx is the slide rheostat of an i2c interface in the present invention, according to Rb difference, adjusts it by i2c in real time
Resistance size, make the impedance on circuit minimum, it is maximum to the charging current of the battery of mobile terminal, improve the speed of constant-voltage charge
Degree.
Step S102 another embodiment, as shown in figure 3, being specially：
The resistance of slide rheostat is adjusted, makes the internal resistance of the resistance of slide rheostat and the battery of mobile terminal identical.This
When, the resistance of the branch road where the battery of mobile terminal is the resistance of the internal resistance of the battery of mobile terminal, it is only necessary to which regulation is slided
Rheostatic resistance is identical with the resistance of the internal resistance of the battery of mobile terminal, makes the impedance on circuit minimum, to mobile terminal
The charging current of battery is maximum.
Another embodiment of the present invention provides a kind of mobile terminal, and mobile terminal includes：
Detection unit 201, to mobile terminal carry out constant-voltage charge during, detect mobile terminal battery it is interior
Resistance；
Control unit 202, according to the internal resistance of the battery of mobile terminal, by the branch road where the battery with mobile terminal mutually simultaneously
The resistance of the slide rheostat of connection is adjusted to identical with the resistance of the branch road where the battery of mobile terminal.
Mobile terminal also includes memory cell 203, the electricity and temperature of the battery of the memory mobile terminal of memory cell 203 with
Corresponding relation between the internal resistance of the battery of mobile terminal.
The internal resistance of battery that detection unit 201 detects mobile terminal is specially：
Detect the temperature and electricity of the battery of mobile terminal；
Obtained according to the corresponding relation between the internal resistance of the temperature of the battery of mobile terminal and the battery of electricity and mobile terminal
Take the current internal resistance of the battery of mobile terminal.
A kind of embodiment, the resistance of the branch road where the battery of mobile terminal are the resistance of the internal resistance of the battery of mobile terminal
Value.
Another embodiment, current sense resistor, the movement are additionally provided with the branch road where the battery of mobile terminal
The resistance of branch road where the battery of terminal is examined for the resistance of the internal resistance of the battery of mobile terminal with the electric current being arranged on branch road
The resistance sum of measuring resistance.
Mobile terminal provided by the invention and its charging method, according to the internal resistance of the battery of detection mobile terminal, regulation is slided
Rheostatic resistance is moved, makes the resistance of two branch roads parallel with one another in charging circuit identical, the total resistance resistance of obtained circuit
Value is minimum, makes charging current maximum, improves the speed of constant-voltage charge.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Some equivalent substitutes or obvious modification are made on the premise of not departing from present inventive concept, and performance or purposes are identical, all should
It is considered as belonging to the scope of patent protection that the present invention is determined by the claims submitted.
Claims (2)
1. a kind of charge control method of mobile terminal, it is characterised in that the charge control method comprises the following steps：
The battery of mobile terminal is tested, during constant-voltage charge is carried out to the mobile terminal, obtains the shifting
Corresponding relation between the internal resistance of the electricity and the battery of temperature and the mobile terminal of the battery of dynamic terminal；Detect mobile terminal
Battery temperature and electricity；
According to the corresponding pass between the temperature of the battery of the mobile terminal and electricity and the internal resistance of the battery of the mobile terminal
System, obtains the current internal resistance of the battery of mobile terminal；
According to the internal resistance of the battery of the mobile terminal, the slip that will be in parallel with the branch road where the battery of the mobile terminal
Rheostatic resistance is adjusted to identical with the resistance of the branch road where the battery of the mobile terminal in real time；
Resistance and setting of the resistance of branch road where the battery of the mobile terminal for the internal resistance of the battery of the mobile terminal
The resistance sum of current sense resistor on the branch road.
2. a kind of mobile terminal, it is characterised in that the mobile terminal includes：
Memory cell, the memory cell store the electricity and temperature and the electricity of the mobile terminal of the battery of the mobile terminal
Corresponding relation between the internal resistance in pond；
Detection unit, for during constant-voltage charge is carried out to the mobile terminal, detecting the temperature of the battery of mobile terminal
Degree and electricity；According to pair between the internal resistance of the temperature of the battery of the mobile terminal and electricity and the battery of the mobile terminal
Answer the current internal resistance of the battery of Relation acquisition mobile terminal；And then obtain electricity and temperature and the institute of the battery of the mobile terminal
State the corresponding relation between the internal resistance of the battery of mobile terminal；
Control unit, according to the internal resistance of the battery of the mobile terminal, by with the branch road phase where the battery of the mobile terminal
The resistance of slide rheostat in parallel is adjusted to identical with the resistance of the branch road where the battery of the mobile terminal in real time；
Current sense resistor is additionally provided with branch road where the battery of the mobile terminal, where the battery of the mobile terminal
The resistance of branch road is the resistance of the internal resistance of the battery of the mobile terminal and the current sense resistor being arranged on the branch road
Resistance sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410413497.XA CN104167795B (en) | 2014-08-20 | 2014-08-20 | A kind of mobile terminal and its charge control method |
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| 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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| CN104167795A CN104167795A (en) | 2014-11-26 |
| CN104167795B true CN104167795B (en) | 2018-03-27 |
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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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6411318B2 (en) * | 2015-12-09 | 2018-10-24 | 本田技研工業株式会社 | Charging current setting method, charging method, charging device and actuator |
| CN106549465B (en) * | 2017-01-13 | 2019-05-17 | Oppo广东移动通信有限公司 | Charge control method, device, system and terminal |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4401734B2 (en) * | 2002-10-11 | 2010-01-20 | キヤノン株式会社 | Secondary battery internal resistance detection method, internal resistance detection device, internal resistance detection program, and medium containing the program |
| CN101436783B (en) * | 2008-12-10 | 2013-08-07 | 华为终端有限公司 | Charging circuit and device |
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2014
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN104167795A (en) | 2014-11-26 |
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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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Granted publication date: 20180327 |
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