CN106410909B - Charging device and charging method for mobile terminal - Google Patents
Charging device and charging method for mobile terminal Download PDFInfo
- Publication number
- CN106410909B CN106410909B CN201610968536.1A CN201610968536A CN106410909B CN 106410909 B CN106410909 B CN 106410909B CN 201610968536 A CN201610968536 A CN 201610968536A CN 106410909 B CN106410909 B CN 106410909B
- Authority
- CN
- China
- Prior art keywords
- charging
- current
- output
- mobile terminal
- bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 24
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- UGAJKWZVPNVCIO-UHFFFAOYSA-N Terminalin Chemical compound O1C(=O)C(C2=3)=C(C4=C(O)C(O)=C(O)C=C4C(=O)O4)C4=C(O)C=3OC(=O)C3=C2C1=C(O)C(OC1=O)=C3C2=C1C=C(O)C(O)=C2O UGAJKWZVPNVCIO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
-
- H02J7/0091—
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
-
- 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 provides a charging device for a mobile terminalThe device comprises: a current regulating unit for reducing the output current of the charging device to a first current I1Making the charging device output a first output power P1(ii) a A voltage regulating unit for reducing the output voltage V of the charging devicebus(ii) a When the output voltage V isbusWhen the current is reduced, the current regulating unit raises the output current to a second current I2Making the charging device output one and the first output power P1Equal second output power P2And the second output power P2Charging efficiency mu of2Greater than the first output power P1Charging efficiency mu of1. The invention also provides a charging method for the mobile terminal. After the technical scheme is adopted, the temperature of the mobile terminal during charging can be reduced and the service life of the mobile terminal can be prolonged under the condition that the charging time and the charging efficiency are not influenced.
Description
Technical Field
The present invention relates to the field of mobile terminals, and in particular, to a charging device and a charging method for a mobile terminal.
Background
With the continuous development of communication technology, mobile terminals affect communication in various fields. As a mobile type of device, endurance is always a concern for users. When the mobile terminal is used for a long time, it is necessary to charge the battery discharged for a long time. With the increasing pace of life, users have higher requirements for charging time, but a rapid charging mode requires a larger charging power, so that the battery and the mobile terminal are heated, and the service life of the battery in the mobile terminal is shortened when the temperature is too high.
Therefore, a new charging device and a new charging method are needed, which can reduce the temperature of the mobile terminal during charging and prolong the service life of the mobile terminal without affecting the charging time and the charging efficiency.
Disclosure of Invention
In order to overcome the technical defects, an object of the present invention is to provide a charging device and a charging method for a mobile terminal, which effectively reduce the temperature rise of the mobile terminal during large current charging while maintaining fast charging.
The invention discloses a charging device for a mobile terminal, which comprises: a current regulating unit for reducing the output current of the charging device to a first current I1Making the charging device output a first output power P1(ii) a A voltage regulating unit for reducing the output voltage V of the charging devicebus(ii) a When the output voltage V isbusWhen the current is reduced, the current regulating unit raises the output current to a second current I2Making the charging device output one and the first output power P1Equal second output power P2And the second output power P2Charging efficiency mu of2Greater than the first output power P1Charging efficiency mu of1。
Preferably, the charging device inputs an input power P to the mobile terminalinSaid input power Pin＝Vbat*I/μ2。
Preferably, the voltage regulating unit linearly regulates the output voltage VbusSaid output voltage VbusThe adjustment gear of (2) is 0.5V.
The invention also discloses a charging method for the mobile terminal, which comprises the following steps:
step 1: reducing the output current to a first current I during charging1And outputs a first output power P1；
Step 2: reducing output voltage V during chargingbus；
And step 3: increasing the output current to a second current I2And outputs a first output power P1Equal second output power P2Wherein the second outputPower P2Charging efficiency mu of2Greater than the first output power P1Charging efficiency mu of1。
Preferably, step 1 further includes: according to the battery voltage V of the mobile terminalbatCalculating the input current I ═ P1*μ1/Vbat。
Preferably, step 3 further includes: calculating the second output power P according to the input current I2＝Vbat*I/μ2。
Preferably, step 1 further includes: when the temperature of the mobile terminal reaches a preset temperature limit value, starting the current regulating unit to realize the first current I1。
Preferably, in the step 2, the voltage regulating unit linearly regulates the output voltage VbusSaid output voltage VbusThe adjustment gear of (2) is 0.5V.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the charging efficiency of the charging device is higher during quick charging, and the charging time is shortened;
2. the temperature of the mobile terminal during charging is effectively reduced, and the service life of a battery in the mobile terminal is prolonged.
Drawings
FIG. 1 shows the charging efficiency and the output voltage V of a charging device according to a preferred embodiment of the present inventionbusA schematic diagram of the relationship of (1);
FIG. 2 is a diagram illustrating an input current I and an output voltage V when the mobile terminal is at different temperatures according to a preferred embodiment of the present inventionbusThe relationship of (1);
fig. 3 is a flow chart illustrating a charging method according to a preferred embodiment of the invention.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
In a preferred embodiment of the present invention, the charging device is used for supplementing the electric energy to the mobile terminal. This charging device is including:
-a charging chip
The charging chip is internally provided with a logic control unit which can issue control instructions to other components in the charging device so as to control the charging process.
-a current regulating unit
The current adjusting unit is arranged in the charging device and can adjust the current output by the charging device, such as increasing or decreasing, when the temperature of the surface of a main board or a cover body of the mobile terminal is higher, a control element of the mobile terminal, such as a CPU (central processing unit), detects the temperature of the mobile terminal, and when the temperature is too high and exceeds a certain preset threshold value, the charging chip receives an instruction from the CPU, so that the output current of the charging device to the charging device is decreased, and the first current I is output to the mobile terminal by the charging device at the moment1And cooling the mobile terminal for the first time through the flow reduction. Thus, having the first current I1Then, the charging device outputs a first output power P to the mobile terminal electrically connected thereto1. The battery contained in the mobile terminal has the battery voltage V when in charging usebatAnd the input current I during charging according to the first output power P1Battery voltage V as an inherent propertybatAnd the charging chip is at the first output power P1Has a charging efficiency mu1The input current I ═ P can be calculated1*μ1/VbatThe input current I is the current input to the battery of the mobile terminal by the charging device when the mobile terminal is in a charging state.
-a voltage regulation unit
The voltage regulating unit is arranged in the charging device, and after the current regulating unit carries out the first cooling according to the temperature rise of the mobile terminal, the voltage regulating unit receives the instruction of the charging chip and further reduces the output voltage V of the charging devicebus. Meanwhile, in order to ensure that the charging speed is not influenced, after the voltage regulation unit regulates the voltage, the voltage regulation unit changes the output current again, and at the moment, the first current I is increased1To a second current I2To make the charging device toThe mobile terminal outputs a second output power P2And the second current I is calculated according to the formula of the output power P ═ U × I2Compared with the first current I1Should satisfy the first output power P1And a second output power P2Are equal. For example, in the first time of current reduction, the output voltage VbusIs 12V, the first current I11.5A, the first output power P1Is 18W. Then the voltage regulating unit outputs the voltage VbusAdjusted to 10V, the second output power P is satisfied2Is still equal to the first output power P1Equal to 18W, the current regulating unit should supply the second current I output by the charging device2Adjusted to 1.8A.
Referring to fig. 1, the charging device includes a charging chip with different output currents and output voltages VbusA graph of the change in charging efficiency, in which the abscissa represents the output current of the charging device and the first current I is the first current in the different states of the charging device1And a second current I2The ordinate represents different output voltages VbusThe charging efficiency value of. In FIG. 1, the output voltages V are shown in the examplesbus12V, 9V and 5V are taken as examples, when the output voltage V isbusAt 12V, indicated by the continuous broken line in FIG. 1, when the output voltage V isbusAt 9V, indicated by broken lines in FIG. 1, when the output voltage V is setbusAt 5V, indicated by a dotted line in fig. 1. As can be understood from fig. 1, under the condition of the same output current, when the output voltage V is the samebusWhen the charging efficiency is reduced, the charging efficiency of the charging device is higher. According to the configuration of the above embodiment, the voltage V is outputbusAfter the decrease, the second charging efficiency mu of the charging device2Greater than the output voltage VbusFirst charging efficiency mu before reduction1According to the input power P of the mobile terminalin＝VbatI/mu, input power P when charging efficiency is higherinThe smaller, that is, the second charging efficiency μ2Input power P ofinLess than the first charging efficiency mu1Input power P ofin. It will be appreciated that when the power P is inputinWhen the temperature is reduced, the temperature rise at the mobile terminal is reduced, so that the second temperature reduction of the mobile terminal is completed.
As described in the foregoing embodiment, the first temperature reduction is implemented by the current reduction control of the current adjusting unit, and the mechanism for triggering the current adjusting unit is optionally to preset a temperature limit value in the mobile terminal, such as 40 ℃, 42 ℃, and the like, when a certain part of the mobile terminal, such as the motherboard and the body, reaches the temperature limit value, the charging chip controls the current unit to start, and the output current is reduced to the first current I1. Other triggers such as down flow control by charge time, charge percentage, etc. may also be implemented.
In a preferred embodiment, the voltage regulating unit controls the output voltage VbusThe voltage value of the mobile terminal can be adjusted by taking every 0.5V as a grade, and under the configuration, a user can set a better output voltage V according to the adaptability of different mobile terminalsbusTo minimize the temperature at the mobile terminal while ensuring the charging speed.
Referring to FIG. 2, the input current I and the output voltage V are shown when the mobile terminal is at different temperaturesbusThe relationship (2) of (c). The technical scheme adopted by the invention is made in the same table as the prior scheme, which shows different examples of the output voltage regulation configured by the charging device according to the invention when the mobile terminal is at different temperaturesbusTo reduce the temperature rise due to rapid charging.
Table 1 below shows the temperatures monitored on the surface of the mobile terminal at different charging times when comparing the prior art with an embodiment of the present invention, and it is apparent from table 1 that the required charging time is the same as the prior art, but the temperature rise of the surface temperature is reduced by 0.6 degrees, and the temperature of the mobile terminal can be sensed to be within an acceptable range by the user.
| Charging time | Prior art (. degree. C.) | Inventive (. degree.C.) |
| 10 minutes | 38.60 | 38.50 |
| 20 minutes | 39.70 | 39.70 |
| 30 minutes | 40.40 | 39.90 |
| 40 minutes | 40.70 | 40.10 |
| 50 minutes | 40.60 | 40.10 |
| 60 minutes | 38.30 | 38.60 |
TABLE 1
Referring to fig. 3, a schematic flow chart of a charging method of a mobile terminal provided by the present invention is shown, where the method includes the following steps:
s1: output current of charging device passes through charging coreThe current regulating device of the slice or the arrangement is lowered until the first current I1At the first current I1Then, the first output power P is output1；
S2: reducing the output voltage V during charging by means of a charging chip or a voltage regulating devicebus；
S3: raising the output current again through the charging chip or the arranged current regulating device until reaching the second current I2At the second current I2Then, a second output power P is output2First output power P to ensure constant charging speed1And a second output power P2Are equal. At the same time, due to the output voltage VbusReducing, the second output power P2Charging efficiency mu of2Greater than the first output power P1Charging efficiency mu of1。
S1, it also includes S1-1, according to the battery voltage V of the mobile terminalbatCalculating the input current I ═ P1*μ1/VbatSo as to obtain the input current I received by the mobile terminal in the charging process.
Further, in S3, the input power P input to the mobile terminal by the charging device can be calculated according to the input current IinIn particular the input power PinIs Pin＝Vbat*I/μ2It is to be understood that the mobile terminal receives the input power P when S2 is not performedinIs Pin＝Vbat*I/μ1Due to the second output power P2Charging efficiency mu of2Greater than the first output power P1Charging efficiency mu of1So that the input power P after execution of S2inBecomes smaller and thus reduces the temperature rise at the mobile terminal.
Also, as previously described, in an alternative embodiment, a temperature limit value may be set at the charging device or the mobile terminal before S1, and S1 is performed only when the temperature of the mobile terminal reaches the above temperature limit value.
Alternatively or preferably, or in S2, the adjustment of the output voltage is linear, with each gear interval being 0.5V. It is understood that the gear setting can also be selected from 0.3V, 1V, etc., and will not be described herein.
While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present application is not limited by the order of acts or acts described, as some steps may occur in other orders or concurrently with other steps in accordance with the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and elements referred to are not necessarily required in this application.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The charging method and apparatus disclosed in the embodiments of the present invention have been described in detail, and the disclosure is only illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the scope of the present invention.
Claims (7)
1. A charging device for a mobile terminal, comprising:
a current regulating unit for reducing the output current of the charging device to a first current I when the temperature of the mobile terminal reaches a preset temperature limit value1Making the charging device output a first output power P1；
A voltage regulating unit for reducing the output voltage V of the charging devicebus；
When the output voltage V isbusWhen lowered, the current adjusting unit raises the currentOutput the current to a second current I2Making the charging device output one and the first output power P1Equal second output power P2And the second output power P2Charging efficiency mu of2Greater than the first output power P1Charging efficiency mu of1。
2. A charging arrangement as claimed in claim 1,
the charging device inputs an input power P to the mobile terminalinSaid input power Pin＝Vbat*I/μ2Wherein V isbatIs the battery voltage and I is the input current.
3. A charging arrangement as claimed in claim 1,
the voltage regulating unit linearly regulates the output voltage VbusSaid output voltage VbusThe adjustment gear of (2) is 0.5V.
4. A charging method for a mobile terminal, comprising the steps of:
step 1: when the temperature of the mobile terminal reaches a preset temperature limit value, reducing the output current during charging to a first current I1And outputs a first output power P1；
Step 2: reducing output voltage V during chargingbus；
And step 3: increasing the output current to a second current I2And outputs a first output power P1Equal second output power P2Wherein the second output power P2Charging efficiency mu of2Greater than the first output power P1Charging efficiency mu of1。
5. The charging method according to claim 4,
in step 1, the method further comprises:
according to the battery voltage V of the mobile terminalbatCalculating the input current I ═ P1*μ1/Vbat。
6. The charging method according to claim 5,
in step 3, the method further comprises:
calculating an input power P to the mobile terminal according to the input current IinSaid input power Pin＝Vbat*I/μ2。
7. The charging method according to claim 4,
in the step 2, the output voltage V is linearly regulated by adopting a voltage regulating unitbusSaid output voltage VbusThe adjustment gear of (2) is 0.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610968536.1A CN106410909B (en) | 2016-10-27 | 2016-10-27 | Charging device and charging method for mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610968536.1A CN106410909B (en) | 2016-10-27 | 2016-10-27 | Charging device and charging method for mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106410909A CN106410909A (en) | 2017-02-15 |
| CN106410909B true CN106410909B (en) | 2020-03-13 |
Family
ID=58014511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610968536.1A Active CN106410909B (en) | 2016-10-27 | 2016-10-27 | Charging device and charging method for mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106410909B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116418056A (en) * | 2021-12-29 | 2023-07-11 | 中兴通讯股份有限公司 | Charging control method, electronic device, and computer-readable storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873931B (en) * | 2004-12-07 | 2010-08-04 | 旺宏电子股份有限公司 | Method of forming and operating an assisted charge memory device |
| CN103580255A (en) * | 2013-11-19 | 2014-02-12 | 惠州Tcl移动通信有限公司 | Quick charging terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7129684B2 (en) * | 2005-01-10 | 2006-10-31 | Ana Semiconductor | Variable start-up circuit for switching regulators |
| CN104485713A (en) * | 2014-12-25 | 2015-04-01 | 小米科技有限责任公司 | Charge control method and device |
-
2016
- 2016-10-27 CN CN201610968536.1A patent/CN106410909B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873931B (en) * | 2004-12-07 | 2010-08-04 | 旺宏电子股份有限公司 | Method of forming and operating an assisted charge memory device |
| CN103580255A (en) * | 2013-11-19 | 2014-02-12 | 惠州Tcl移动通信有限公司 | Quick charging terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106410909A (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107171030B (en) | Power storage system and control method for power storage system | |
| US8884589B2 (en) | Method and system for power switch temperature regulation | |
| EP1821384B1 (en) | Programmable switching battery charger | |
| CN106058976B (en) | Method for controlling heating of electronic product by adjusting charging current | |
| US11626747B2 (en) | Battery quick charging method, device to-be-charged, charging apparatus | |
| CN106655407B (en) | Battery charging method and device, electronic equipment, adapter and charger | |
| CN103227488B (en) | Method for controlling charging voltage of mobile terminal and charging conversion device | |
| JPWO2016113791A1 (en) | Battery device, charge control device, and charge control method | |
| WO2012009935A1 (en) | Management device for charging circuit and wireless terminal | |
| GB2543225A (en) | Controlling power delivery to a battery | |
| CN108501747B (en) | Charging current control method and device, controller and electric automobile | |
| KR20170051031A (en) | Method and apparatus of charging battery | |
| CN105119335B (en) | charging control method | |
| TWI584554B (en) | Temperature-controlled power supply system and method | |
| JP2021526000A (en) | Battery charger | |
| CN107240940A (en) | USB connector charging method and circuit | |
| CN110994734A (en) | Battery charging method and device and electronic auxiliary equipment | |
| CN106410909B (en) | Charging device and charging method for mobile terminal | |
| CN106549441B (en) | Charging system | |
| CN115642660A (en) | Charging control method and device, electronic equipment and computer readable storage medium | |
| US9568926B2 (en) | Power supply interface having multiple voltage sources | |
| KR20170082258A (en) | Method and apparatus of charging battery | |
| KR20090103132A (en) | Balenced charging apparatus of ultracapacitors and balenced charging method thereof | |
| US20130154571A1 (en) | Power control system and method | |
| CN107171376B (en) | Regulating circuit with analog feedback and digital feedback and method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |