CN105978065A - Reverse supply output current setting method and device for mobile terminal - Google Patents
Reverse supply output current setting method and device for mobile terminal Download PDFInfo
- Publication number
- CN105978065A CN105978065A CN201610313706.2A CN201610313706A CN105978065A CN 105978065 A CN105978065 A CN 105978065A CN 201610313706 A CN201610313706 A CN 201610313706A CN 105978065 A CN105978065 A CN 105978065A
- Authority
- CN
- China
- Prior art keywords
- mobile terminal
- cell voltage
- electric current
- output
- voltage
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims description 2
- 241000599985 Beijerinckia mobilis Species 0.000 claims 1
- 230000007423 decrease Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
-
- H02J7/0078—
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
Abstract
The invention provides a reverse supply output current setting method and device for a mobile terminal. A boost chip in a mobile terminal is electrically connected with a USB interface and a battery, and controls the output voltage and current of the battery. When the mobile terminal starts reverse supply, the set output voltage and current are obtained. The mobile terminal detects the voltage of the battery, and judges whether the voltage of the battery is lower than a battery voltage threshold value or not. When the voltage of the battery is lower than the battery voltage threshold value, the boost chip controls the gradual decrease of the output current, or else, the boost chip continues to detect the voltage of the battery. During the reverse power supply of the mobile terminal, the boost chip is used for gradually decreasing the output current till the detected voltage of the battery is greater than the set battery voltage threshold value when the detected voltage of the battery is lower than the set battery voltage threshold value. The method enables the energy of the battery of the mobile terminal to be fully used when the mobile terminal is used for reversely supplying power to connected equipment, and prolongs the power supply time.
Description
Technical field
The method that the present invention relates to the charge or discharge of mobile terminal, in particular a kind of mobile terminal backward is powered
Output current setting method and device.
Background technology
At present, mobile terminal is reversed the ability that other equipment are powered adding to possess after boost chip, and this technology is more
Common example is: 1) the OTG technology grown up in recent years, it is simply that increase boosting core at the USB interface of mobile terminal
Sheet so that mobile terminal cell voltage can be boosted after by the equipment charge connected；2) charger baby technology, charging
Precious can by the equipment charge connected, charger baby be also by after internal battery voltage is boosted by the equipment charge connected.
Fig. 1 show the boost chip of mobile terminal and USB interface and battery connecting construction in prior art OTG technology
Figure, as it is shown in figure 1, the mobile terminal possessing reverse power supply function is unlocked after reverse power supply function, it passes through boost chip 10 '
The boost in voltage exported by battery 20 ' is to the voltage V set, and arranges supply current I, if now cell voltage is V1, and root
According to preservation of energy, now battery 20 ' exports electric current I1=V*I/V1, because V1 is less than V, so I1 is more than I.Existing skill
Art mobile terminal backward power output scheme all use constant pressure and flow output scheme as shown in Figure 1, namely I with V is setting
Keep constant after Ding；And hold at battery 20 ', along with energy is progressively consumed, its cell voltage V1 declines gradually, according to aforementioned
Formula I1=V*I/V1 understands to maintain that I's with V is constant, and cell output current I1 needs rise along with the decline of V1
High.
It is illustrated in figure 2 the internal structure equivalent schematic of battery 20 ' in Fig. 1, in R1 is the equivalence that battery 20 ' is internal
Resistance, E1 is the voltage of the internal actual energy-storage module of battery 20 ', according to Kirchhoff's second law: I1*R1+E1-V1
=0, when I1 is bigger, the deviation of E1 Yu V1 is the biggest, is that other equipment carry out reverse power supply at actually used mobile terminal
Time tend not to fully make mobile terminal be that connected device is powered；Such as, E1 is 3.4 volts, and R1 is 200 milliohms, and I1 is 1A, then
V1 is 3.2V, and in general 3.2V is the shutdown voltage of mobile terminal, and mobile terminal now will be caused to shut down, mobile terminal because of
This defect will be made to become apparent from improving further of supply current I by what boosting brought.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
For mobile terminal in prior art be connected device power time can not make full use of battery of mobile terminal energy
Defect, the present invention provides a kind of mobile terminal backward to power output current setting method, so that energy during reverse power supply
Reducing electric current makes mobile terminal power for connected device more fully.
It is as follows that the present invention solves the technical scheme that technical problem used:
A kind of mobile terminal backward is powered output current setting method, the boost chip in mobile terminal respectively with USB interface, electricity
Pond electrically connects, and boost chip controls output voltage and the output electric current of battery, comprises the steps:
Step A, when mobile terminal starts reverse power supply, obtains the output voltage and output electric current arranged；
Step B, mobile terminal detection cell voltage；
Step C, it is judged that whether cell voltage is less than cell voltage threshold value, when described cell voltage is less than described cell voltage door
During limit value, boost chip controls to gradually reduce output electric current；Otherwise return and perform step B.
Improving as one, in described step B, described mobile terminal detection cell voltage specifically uses startup intervalometer every
The detection of cell voltage is carried out every the set time.
Improving as one, the cell voltage threshold value in described step C is set to mobile terminal shutdown voltage and adds 200 in the least
Volt.
Improving as one, in described step C, boost chip controls to gradually reduce output electric current is to reduce by 50 milliamperes every time.
As the improvement of said method technical scheme, described boost chip controls to gradually reduce output electric current and is less than or equal to
When zero, mobile terminal closes reverse power supply.
The present invention also provides for a kind of mobile terminal backward output electric current of powering and arranges device, the boost chip in mobile terminal
Electrically connecting with USB interface, battery respectively, boost chip controls output voltage and the output electric current of battery, and described device includes defeated
Go out to arrange acquisition module, battery voltage sensing module, cell voltage comparison module and output electric current and module is set；
Described output acquisition module, for when mobile terminal starts reverse power supply, obtains the output voltage and output electricity arranged
Stream；
Described battery voltage sensing module detects cell voltage for mobile terminal；
Described cell voltage comparison module is used for judging that whether cell voltage is less than cell voltage threshold value；
When described cell voltage comparison module judges cell voltage less than cell voltage threshold value, described output electric current arranges mould
Block controls boost chip and gradually reduces output electric current, is otherwise proceeded the ratio of cell voltage by described cell voltage comparison module
Relatively judge.
Improving as one, described battery voltage sensing module is when detecting cell voltage, and concrete employing starts intervalometer
The detection of cell voltage is carried out every the set time.
Improving as one, described cell voltage comparison module judges that cell voltage is less than in cell voltage threshold value, electricity
Cell voltage threshold value is set to mobile terminal shutdown voltage and adds 200 millivolts.
Improving as one, described output electric current arranges module control boost chip and gradually reduces in output electric current, boosting
Chip reduces by 50 milliamperes of electric current of output every time.
As the improvement of said apparatus technical scheme, described output electric current arranges module control boost chip and gradually reduces defeated
When going out electric current, when exporting electric current less than or equal to zero, mobile terminal closes reverse power supply.
Compared with prior art, the present invention is when mobile terminal backward is powered, and the cell voltage according to detecting is less than
During the cell voltage threshold value arranged, gradually reduce output electric current by boost chip, until cell voltage is equal to or more than electricity
Cell voltage threshold value, makes mobile terminal during reverse charging, will not reduce cell voltage because of the change of output electric current, lead
Cause mobile terminal can not fully power for connected device, even result in mobile terminal and trigger shutdown voltage and shut down.The present invention
Method and device can make mobile terminal obtain fully carrying out being reversed battery of mobile terminal energy when connected device is powered
Play, extend power-on time.
Accompanying drawing explanation
Fig. 1 is the boost chip of mobile terminal and USB interface and battery connecting construction figure in prior art OTG technology.
Fig. 2 is the internal structure equivalent schematic of the battery 20 ' of battery in Fig. 1.
Fig. 3 be mobile terminal backward of the present invention power output current setting method flow chart.
Fig. 4 is that mobile terminal backward of the present invention output electric current of powering arranges the principle assumption diagram of device.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention further describes.Should be appreciated that specific embodiment described herein, and need not only in order to explain the present invention
In limiting the present invention.
The OTG technology of mobile terminal uses increases boost chip at the USB interface of mobile terminal, makes mobile terminal permissible
By the equipment charge connected after cell voltage is boosted, lead for improving cell voltage rapid decrease after output electric current raises
The problem causing mobile terminal shutdown, the present invention provides a kind of mobile terminal backward to power output current setting method, mobile terminal
In boost chip electrically connect with USB interface, battery respectively, boost chip control battery output voltage with output electric current, Fig. 3
Show that mobile terminal backward of the present invention is powered and export the flow chart of current setting method, including step implemented as described below:
S100, when mobile terminal starts reverse power supply, obtains the output voltage and output electric current arranged.Mobile terminal starts anti-
When power supply, output voltage and output electric current are set according to the equipment situation connected, detect the situation of connection equipment and set
The method putting output voltage and output electric current has a variety of, and the equipment such as taking mobile terminal to be connected is respectively provided with identical defeated
Go out voltage and output electric current, also have mobile terminal and connected device to carry out data communication and obtain the charge parameter of equipment, then
Arrange corresponding output voltage with output electric current, these mobile terminals according to the equipment communication connected go forward side by side line output voltage and
The process of the setting of output electric current is all prior art, does not repeats.
S200, mobile terminal detection cell voltage.
It is also preferred that the left mobile terminal detection cell voltage uses startup intervalometer to carry out the inspection of cell voltage every the set time
Survey.Intervalometer was preferably set to 2 seconds every the set time, after i.e. mobile terminal starts intervalometer, carried out once electricity every 2 seconds
The detection of cell voltage is to obtain cell voltage.
S300, it is judged that whether cell voltage is less than cell voltage threshold value, when described cell voltage is less than described battery electricity
During pressure gate limit value, boost chip controls to gradually reduce output electric current；Otherwise return and perform step S200.Acquisition for mobile terminal battery
Voltage also judges whether cell voltage is less than the cell voltage threshold value pre-set, it is preferred that cell voltage threshold value is arranged
200 millivolts are added for mobile terminal shutdown voltage.When cell voltage is less than the cell voltage threshold value arranged, close step S200
The intervalometer of middle startup, boost chip controls to gradually reduce output electric current, wherein, it is preferred that boost chip controls to gradually reduce
Output electric current is to reduce by 50 milliamperes every time.If cell voltage is higher than cell voltage threshold value, then etc. after the scheduled time again
Carry out the detection of cell voltage in step 200, then carry out the multilevel iudge of cell voltage and cell voltage threshold value.
In step 300, when boost chip controls to gradually reduce output electric current less than or equal to zero, mobile terminal is closed
Reverse power supply.Because when exporting electric current less than or equal to zero, being further continued for using mobile terminal to carry out reverse power supply can be by movement
The battery of terminal depletes, and such as, mobile terminal shutdown voltage is 3.2V, then can arrange cell voltage threshold value is 3.4V, if
Currently detected cell voltage is less than 3.4V, illustrates that the voltage of inside battery energy-storage module, near 3.4V, re-uses
Mobile terminal carries out reverse power supply and has little significance, and can reverse power supply function be closed, because, even if now continuing to enable reversely confession
Electricity Functional, the electric current that can be output by is the least, if selecting to continue to put out electric current, then is easy to be pulled to cell voltage close electromechanics
Pressure 3.2V triggers mobile terminal shutdown.
The present invention also provides for a kind of mobile terminal backward output electric current of powering and arranges device, the boost chip in mobile terminal
Electrically connecting with USB interface, battery respectively, boost chip controls output voltage and the output electric current of battery, moves as shown in Figure 4
Terminal reverse power supply output electric current arranges the principle assumption diagram of device, and described device includes that output arranges acquisition module 30, battery
Voltage detection module 40, cell voltage comparison module 50 and output electric current arrange module 60.
Described output acquisition module 30, for when mobile terminal starts reverse power supply, obtains the output voltage arranged with defeated
Go out electric current.Obtain the output voltage and output electric current arranged.When mobile terminal starts reverse power supply, according to the equipment feelings connected
Condition arrange output voltage with output electric current, detection connection equipment situation and arrange output voltage with export electric current method have
A variety of, the equipment such as taking mobile terminal to be connected is respectively provided with identical output voltage and output electric current, also has mobile whole
End and connected device carry out data communication and obtain the charge parameter of equipment, then arrange corresponding output voltage and output electricity
Stream, these mobile terminals are all existing according to the go forward side by side process of setting of line output voltage and output electric current of the equipment communication connected
There is technology, do not repeat.
Described battery voltage sensing module 40 detects cell voltage for mobile terminal.It is also preferred that the left mobile terminal detection electricity
Cell voltage uses startup intervalometer to carry out the detection of cell voltage every the set time.Intervalometer was preferably arranged every the set time
It is 2 seconds, after i.e. mobile terminal starts intervalometer, carried out the detection of one-shot battery voltage every 2 seconds to obtain cell voltage.
Described cell voltage comparison module 50 is used for judging that whether cell voltage is less than cell voltage threshold value.Mobile terminal
Obtain cell voltage and judge whether cell voltage is less than the cell voltage threshold value pre-set, it is preferred that cell voltage door
Limit value is set to mobile terminal shutdown voltage and adds 200 millivolts.
When described cell voltage comparison module 50 judges that cell voltage is less than cell voltage threshold value, described output electric current
Arrange module 60 to control boost chip and gradually reduce output electric current, otherwise proceeded battery by described cell voltage comparison module
The multilevel iudge of voltage.Wherein, described output electric current arrange module 60 control boost chip gradually reduce output electric current in, boosting
Chip reduces by 50 milliamperes of electric current of output every time.
It is preferred that described output electric current arrange module 60 control boost chip gradually reduce output electric current time, when output electricity
When stream is less than or equal to zero, mobile terminal closes reverse power supply.
Apparatus of the present invention operation principle is identical with said method operation principle, does not repeats.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved according to the above description or to convert, all these modifications and variations all should belong to the guarantor of claims of the present invention
Protect scope.
Claims (10)
1. mobile terminal backward is powered an output current setting method, the boost chip in mobile terminal respectively with USB interface,
Battery electrically connects, and boost chip controls output voltage and the output electric current of battery, it is characterised in that comprise the steps:
Step A, when mobile terminal starts reverse power supply, obtains the output voltage and output electric current arranged；
Step B, mobile terminal detection cell voltage；
Step C, it is judged that whether cell voltage is less than cell voltage threshold value, when described cell voltage is less than described cell voltage door
During limit value, boost chip controls to gradually reduce output electric current；Otherwise return and perform step B.
Mobile terminal backward the most according to claim 1 is powered output current setting method, it is characterised in that described step
In B, described mobile terminal detection cell voltage specifically uses startup intervalometer to carry out the detection of cell voltage every the set time.
Mobile terminal backward the most according to claim 1 is powered output current setting method, it is characterised in that described step
Cell voltage threshold value in C is set to mobile terminal shutdown voltage and adds 200 millivolts.
Mobile terminal backward the most according to claim 1 is powered output current setting method, it is characterised in that described step
In C, boost chip controls to gradually reduce output electric current is to reduce by 50 milliamperes every time.
5. powering output current setting method according to the mobile terminal backward described in any one of Claims 1-4, its feature exists
In, when described boost chip controls to gradually reduce output electric current less than or equal to zero, mobile terminal closes reverse power supply.
6. mobile terminal backward power output electric current a device is set, the boost chip in mobile terminal respectively with USB interface,
Battery electrically connects, and boost chip controls output voltage and the output electric current of battery, it is characterised in that described device includes that output sets
Put acquisition module, battery voltage sensing module, cell voltage comparison module and output electric current and module is set；
Described output acquisition module, for when mobile terminal starts reverse power supply, obtains the output voltage and output electricity arranged
Stream；
Described battery voltage sensing module detects cell voltage for mobile terminal；
Described cell voltage comparison module is used for judging that whether cell voltage is less than cell voltage threshold value；
When described cell voltage comparison module judges cell voltage less than cell voltage threshold value, described output electric current arranges mould
Block controls boost chip and gradually reduces output electric current, is otherwise proceeded the ratio of cell voltage by described cell voltage comparison module
Relatively judge.
Mobile terminal backward the most according to claim 6 power output electric current device is set, it is characterised in that described battery
Voltage detection module is when detecting cell voltage, and concrete employing starts intervalometer and carries out the inspection of cell voltage every the set time
Survey.
Mobile terminal backward the most according to claim 6 power output electric current device is set, it is characterised in that described battery
Voltage comparison module judges that cell voltage is less than in cell voltage threshold value, and cell voltage threshold value is set to mobile terminal shutdown
Voltage adds 200 millivolts.
Mobile terminal backward the most according to claim 6 power output electric current device is set, it is characterised in that described output
Electric current arranges module control boost chip and gradually reduces in output electric current, and boost chip reduces by 50 milliamperes of electric current of output every time.
10. according to the mobile terminal backward described in any one of claim 6 to 9 power output electric current device is set, its feature exists
In, described output electric current arrange module control boost chip gradually reduce output electric current time, when output electric current is less than or equal to zero
Time, mobile terminal closes reverse power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610313706.2A CN105978065A (en) | 2016-05-12 | 2016-05-12 | Reverse supply output current setting method and device for mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610313706.2A CN105978065A (en) | 2016-05-12 | 2016-05-12 | Reverse supply output current setting method and device for mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105978065A true CN105978065A (en) | 2016-09-28 |
Family
ID=56993013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610313706.2A Pending CN105978065A (en) | 2016-05-12 | 2016-05-12 | Reverse supply output current setting method and device for mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105978065A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309880A (en) * | 2017-07-06 | 2017-11-03 | 优必选教育（深圳）有限公司 | A kind of anthropomorphic robot device, control system and its control method |
| CN107331909A (en) * | 2017-06-05 | 2017-11-07 | Tcl移动通信科技（宁波）有限公司 | A kind of OTG output voltage control methods, storage device and mobile terminal |
| CN108767344A (en) * | 2018-04-27 | 2018-11-06 | 出门问问信息科技有限公司 | A kind of battery powered optimization method and device of intelligent sound |
| CN109599906A (en) * | 2017-09-30 | 2019-04-09 | 华为终端（东莞）有限公司 | Charge control method, relevant device and computer storage medium |
| CN112311082A (en) * | 2019-07-31 | 2021-02-02 | 北京君正集成电路股份有限公司 | Protection system for sudden power failure of intelligent sound box |
| CN112311081A (en) * | 2019-07-31 | 2021-02-02 | 北京君正集成电路股份有限公司 | Method for preventing intelligent sound box from suddenly powering down |
| CN112311036A (en) * | 2019-07-31 | 2021-02-02 | 北京君正集成电路股份有限公司 | Over-discharge prevention protection device of electronic product with PMU |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216538A (en) * | 2008-01-04 | 2008-07-09 | 东南大学 | Lithium battery capacity measuring apparatus and determination method |
| CN101682091A (en) * | 2007-06-08 | 2010-03-24 | 松下电器产业株式会社 | Power system and assembled battery controlling method |
| CN104104117A (en) * | 2013-04-01 | 2014-10-15 | 毛广甫 | Storage battery charge and discharge equalization control method and system |
| CN104137379A (en) * | 2012-02-29 | 2014-11-05 | Nec能源元器件株式会社 | Battery control system, battery pack, electronic device, and charger |
| CN104375093A (en) * | 2014-11-20 | 2015-02-25 | 成都信息工程学院 | Storage battery performance tester and implementation method of storage battery performance tester |
| CN105337374A (en) * | 2015-12-04 | 2016-02-17 | 上海斐讯数据通信技术有限公司 | Method for prolonging power supply time |
| US20160064962A1 (en) * | 2014-09-03 | 2016-03-03 | Mophie, Inc. | Systems and methods for battery charging and management |
-
2016
- 2016-05-12 CN CN201610313706.2A patent/CN105978065A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101682091A (en) * | 2007-06-08 | 2010-03-24 | 松下电器产业株式会社 | Power system and assembled battery controlling method |
| CN101216538A (en) * | 2008-01-04 | 2008-07-09 | 东南大学 | Lithium battery capacity measuring apparatus and determination method |
| CN104137379A (en) * | 2012-02-29 | 2014-11-05 | Nec能源元器件株式会社 | Battery control system, battery pack, electronic device, and charger |
| CN104104117A (en) * | 2013-04-01 | 2014-10-15 | 毛广甫 | Storage battery charge and discharge equalization control method and system |
| US20160064962A1 (en) * | 2014-09-03 | 2016-03-03 | Mophie, Inc. | Systems and methods for battery charging and management |
| CN104375093A (en) * | 2014-11-20 | 2015-02-25 | 成都信息工程学院 | Storage battery performance tester and implementation method of storage battery performance tester |
| CN105337374A (en) * | 2015-12-04 | 2016-02-17 | 上海斐讯数据通信技术有限公司 | Method for prolonging power supply time |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331909A (en) * | 2017-06-05 | 2017-11-07 | Tcl移动通信科技（宁波）有限公司 | A kind of OTG output voltage control methods, storage device and mobile terminal |
| CN107309880A (en) * | 2017-07-06 | 2017-11-03 | 优必选教育（深圳）有限公司 | A kind of anthropomorphic robot device, control system and its control method |
| CN109599906A (en) * | 2017-09-30 | 2019-04-09 | 华为终端（东莞）有限公司 | Charge control method, relevant device and computer storage medium |
| CN109599906B (en) * | 2017-09-30 | 2022-06-24 | 荣耀终端有限公司 | Charging control method, related device and computer storage medium |
| CN108767344A (en) * | 2018-04-27 | 2018-11-06 | 出门问问信息科技有限公司 | A kind of battery powered optimization method and device of intelligent sound |
| CN112311082A (en) * | 2019-07-31 | 2021-02-02 | 北京君正集成电路股份有限公司 | Protection system for sudden power failure of intelligent sound box |
| CN112311081A (en) * | 2019-07-31 | 2021-02-02 | 北京君正集成电路股份有限公司 | Method for preventing intelligent sound box from suddenly powering down |
| CN112311036A (en) * | 2019-07-31 | 2021-02-02 | 北京君正集成电路股份有限公司 | Over-discharge prevention protection device of electronic product with PMU |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105978065A (en) | Reverse supply output current setting method and device for mobile terminal | |
| CN105703429B (en) | A kind of charging method, mobile terminal, charging equipment and system | |
| CN203800642U (en) | Charging Po and charging system | |
| CN105576766B (en) | It loads automatic detection circuit and applies its mobile power | |
| US9142985B2 (en) | Battery charger for portable electronic equipment | |
| CN104767270B (en) | Mobile charging source with load detection function | |
| CN101924383B (en) | Mobile terminal of automatically setting charging current and implementation method thereof | |
| CN102593881B (en) | Charging power supply circuit, method and application apparatus | |
| CN104600796A (en) | Quickly-charger mobile terminal, method and system | |
| CN201813422U (en) | Charging chip and mobile terminal capable of automatically adjusting charging mode | |
| CN105703423A (en) | Charging control method, charging equipment, and charging system | |
| CN110504728A (en) | A kind of batter-charghing system, method, apparatus, computer equipment and storage medium | |
| CN103247833B (en) | Method and apparatus for charging to battery | |
| CN105720632A (en) | Current increase module and electronic terminal | |
| CN105186598B (en) | USB inserts automatic identification and electric power system and is integrated with the chip of the system | |
| CN104953678B (en) | A kind of control method and system mutually to be charged for mobile terminal | |
| CN105990879A (en) | Device for battery charging and electronic device | |
| CN105720631A (en) | Electronic terminal and charging device | |
| CN104467117B (en) | Charging method, device and charger | |
| CN103368210A (en) | Mobile device and charging method thereof | |
| CN107306046A (en) | Charging device and its charging control circuit and charge control method | |
| CN103001290A (en) | Self-adaption charging circuit and corresponding mobile terminal | |
| CN104600384A (en) | Charging method, charging device and related device | |
| CN206878506U (en) | A kind of data wire and adapter | |
| CN102025174B (en) | Novel charger capable of automatically regulating output based on voltage of battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |