CN104333051A - Mobile terminal and power supply method thereof - Google Patents
Mobile terminal and power supply method thereof Download PDFInfo
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- CN104333051A CN104333051A CN201310308355.2A CN201310308355A CN104333051A CN 104333051 A CN104333051 A CN 104333051A CN 201310308355 A CN201310308355 A CN 201310308355A CN 104333051 A CN104333051 A CN 104333051A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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- H02J7/0027—
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Telephone Function (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a mobile terminal and a power supply method thereof. The mobile terminal comprises a first battery, a second battery, a first switching circuit and a second switching circuit which are respectively connected with the first battery and the second battery. The mobile terminal further comprises a control circuit, a voltage detecting circuit and a first determining module. The voltage detecting circuit is used for detecting the first voltage of the first battery and the second voltage of the second battery. The first determining module is used for determining whether the first voltage is higher than a first threshold, if yes, the control circuit is used for switching on the first switching circuit for utilizing the first battery for supplying power to the mobile terminal, and the second switching circuit is switched off; and otherwise, the control circuit is used for switching on the second switching circuit for utilizing the second battery for supplying power to the mobile terminal, and the first switching circuit is switched off. The mobile terminal has a relatively concise power supply circuit structure and therefore realizes low manufacturing cost of the mobile terminal. Simultaneously seamless power supply switching of double batteries is realized through simple components and a concise circuit structure.
Description
Technical field
The present invention relates to a kind of mobile terminal and method of supplying power to, particularly a kind of Double-battery powered method.
Background technology
Mobile terminal, particularly mobile phone have become indispensable electronic product in people's life, and through the change of development for many years and technology, the function of mobile phone is more and more abundanter, and user just can complete the many work in daily life by a mobile phone.Such as, but some essential problems of mobile phone still can not effectively be resolved, the problem of mobile phone electricity, the electricity of existing commercially conventional smart mobile phone can only maintain operating handset one day usually, and battery of mobile phone electricity shortage is very usual phenomenon.Solution to the problems described above is: one is be often mobile phone charging, and this mode has many limitation, comprises and does not have charging device or do not have charging source; Two is be equipped with reserve battery, and this method must closing hand phone when changing battery, inconvenience very; Three is utilize double cell, although this scheme can provide enough battery capacities, realize being used alternatingly between battery to gapless, the design of mobile phone circuit is very complicated, and mobile phone production cost is relatively high.
Summary of the invention
The technical problem to be solved in the present invention is that the mobile terminal structure relative complex and production cost in order to overcome double cell in prior art is high, Double-battery powered changes inflexible defect, provides a kind of mobile terminal and the method for supplying power to that can realize the seamless switching of double cell with simple component and cheap cost.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of mobile terminal, its feature is, it comprises the first battery, the second battery and the first switching circuit be connected with described second battery with described first battery respectively and second switch circuit, described mobile terminal also comprises: a control circuit, a voltage detecting circuit and one first judge module
Described voltage detecting circuit is for the second voltage of the first voltage and described second battery that detect described first battery, described first judge module is for judging that whether described first voltage is higher than a first threshold, if then described control circuit is used for the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit; Then described control circuit is used for second switch circuit described in conducting is if not that described mobile terminal is powered to adopt described second battery, and turns off described first switching circuit.
In described mobile terminal, by the first switching circuit, second switch circuit, control circuit, voltage detecting circuit and the first judge module, the Double-battery powered of mobile terminal can be completed, and each functional module above-mentioned and circuit all can be realized by discrete component, compared to the integrated circuit of complex and expensive, discrete component circuit not only structure is simple but also with low cost.
When being connected to the first battery and the second battery in the middle of described mobile terminal simultaneously, the first battery connected with the first switching circuit is for main supplying cell, and detect the voltage of this main supplying cell, if the voltage of the first battery is lower than representing during first threshold that the electricity of the first battery is not enough, at this moment mobile terminal can switch to the second powered battery, first threshold the magnitude of voltage that can be greater than when battery cannot be powered is set, like this when utilizing the second powered battery, the first battery uses when also reserved a part of electricity is met an urgent need or changes battery.When a battery is when powering, the connection of another battery can be disconnected, namely ensure that in mobile terminal, the same time only has a powered battery, when the first powered battery, can change the second battery when described mobile terminal normally works, in like manner the second battery can change the first battery when powering.Described mobile terminal can be mobile phone or panel computer.
Preferably, described mobile terminal comprises one second judge module, for judging that whether described second voltage is lower than a Second Threshold when second switch circuit turn-on, if then described control circuit is used for the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit.
When the second powered battery, detect the voltage of the second battery, if when the voltage of the second battery is lower than Second Threshold, can transfer the first powered battery to, if the first battery is when now electricity is not enough, mobile terminal shuts down.Because the second battery is boosting battery, Second Threshold can be set to magnitude of voltage when battery cannot be powered, and namely when the second powered battery, if when the first battery electric quantity is constant, the second battery does not retain electricity one direct power supply.The more succinct and hommization of the powering mode of the first battery and the second battery, user-friendly.
Preferably, described control circuit comprises a negate circuit, turns off described first switching circuit during for turning off second switch circuit described in described second switch circuit or conducting described in conducting during the first switching circuit.
Described negate circuit makes the same time only have a powered battery, another battery can take off to be changed or takes off charging, described negate circuit can comprise metal-oxide layer-semiconductor-field-effect transistor, is realized the mutual negate of the first switching circuit and second switch circuit by above-mentioned field-effect transistor.Ensure that a powered battery can make another battery change arbitrarily.
Preferably, the value of described first threshold is 3.65 volts, and the value of described Second Threshold is 3.4 volts.Second Threshold can for magnitude of voltage when battery cannot be powered, and first threshold exceeds Second Threshold can be made the first battery retain certain electricity to meet an urgent need.
Preferably, described first switching circuit is connected to described first battery by one first battery interface, described first battery interface comprises one first signal pins and the first energization pins for the feeder ear that connects described first battery, the length of described first signal pins is less than the length of described first energization pins, described control circuit for monitoring the state of described first signal pins, and turns off described first switching circuit when described first signal pins and described first battery disconnect and second switch circuit described in conducting; Described second switch circuit is connected to described second battery by one second battery interface, described second battery interface comprises a secondary signal pin and the second energization pins for the feeder ear that connects described second battery, the length of described secondary signal pin is less than the length of described second energization pins, described control circuit also for monitoring the state of described secondary signal pin, and turns off described second switch circuit when described secondary signal pin and described second battery disconnect and the first switching circuit described in conducting.
Described mobile terminal comprises the first battery interface and the second battery interface, signal pins and energization pins is included, the length that the length of signalization pin is less than energization pins can make user random replacing battery when mobile terminal normally works in battery interface.When user changes the battery of powering, because signal pins is shorter than energization pins in battery interface, signal pins can disconnect the connection with supplying cell one step ahead than energization pins, the disconnection of signal pins can be moved terminal and detect, mobile terminal can switch to another powered battery, even if another battery electric quantity deficiency also can make mobile terminal normal shutdown, there will not be the situation of unexpected power-off, achieve the seamless switching of double cell.Shorter than energization pins by signal pins, no matter which battery is powering one that user can change arbitrarily in two batteries of mobile terminal, and can ensure the normal work of mobile terminal.
Preferably, the length 0.3mm shorter in the length of described first energization pins of described first signal pins, the length 0.3mm shorter in the length of described second energization pins of described secondary signal pin.0.3mm is a kind of preferred length.
The present invention also provides a kind of method of supplying power to of mobile terminal, described mobile terminal comprises the first battery, the second battery and the first switching circuit be connected with described second battery with described first battery respectively and second switch circuit, and described method of supplying power to comprises the steps:
S
1, detect the first voltage of described first battery and the second voltage of described second battery;
S
2, judge that whether described first voltage is higher than a first threshold, if then perform step S
3, then perform step S if not
4;
S
3, the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit, then process ends;
S
4, second switch circuit described in conducting is that described mobile terminal is powered to adopt described second battery, and turns off described first switching circuit.
By described method of supplying power to, mobile terminal can realize the mutual power supply of double cell, and when a battery is powered, can change another battery, and user can enjoy more sufficient electricity and obtain one electricity arbitrary way easily.
Preferably, step S
4comprise:
S
41, second switch circuit described in conducting is that described mobile terminal is powered to adopt described second battery, and turns off described first switching circuit;
S
42, judge that whether described second voltage is lower than a Second Threshold, if then perform step S
43, then process ends if not;
S
43, the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit.
When the second powered battery, detect the voltage of the second battery, if when the voltage of the second battery is lower than Second Threshold, can transfer the first powered battery to, if the first battery is when now electricity is not enough, mobile terminal shuts down.Because the second battery is boosting battery, Second Threshold can be set to magnitude of voltage when battery cannot be powered, and namely when the second powered battery, if when the first battery electric quantity is constant, the second battery does not retain electricity one direct power supply.The more succinct and hommization of the powering mode of the first battery and the second battery, user-friendly.
Preferably, described first switching circuit is connected to described first battery by one first battery interface, described first battery interface comprises one first signal pins and the first energization pins for the feeder ear that connects described first battery, and the length of described first signal pins is less than the length of described first energization pins; Described second switch circuit is connected to described second battery by one second battery interface, described second battery interface comprises a secondary signal pin and the second energization pins for the feeder ear that connects described second battery, the length of described secondary signal pin is less than the length of described second energization pins, step S
3comprise:
S
31, the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit;
S
32, monitor the state of described first signal pins;
S
33, turn off described first switching circuit when described first signal pins and described first battery disconnect and second switch circuit, then process ends described in conducting;
Step S
4comprise:
S
41, second switch circuit described in conducting is that described mobile terminal is powered to adopt described second battery, and turns off described first switching circuit;
S
42, monitor the state of described secondary signal pin;
S
43, turn off described second switch circuit when described secondary signal pin and described second battery disconnect and the first switching circuit described in conducting.
By signal pins than energization pins short and said method, no matter which battery is powering one that user can change arbitrarily in two batteries of mobile terminal, and can ensure the normal work of mobile terminal.
Preferably, the length 0.3mm shorter in the length of described first energization pins of described first signal pins, the length 0.3mm shorter in the length of described second energization pins of described secondary signal pin.
Positive progressive effect of the present invention is: the power supply circuit construction of mobile terminal of the present invention is comparatively succinct, thus makes the low cost of manufacture of mobile terminal, and the seamless switching that simultaneously can realize double cell with simple component and succinct circuit structure is powered.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment 1 of mobile terminal of the present invention.
Fig. 2 is the flow chart of the embodiment 1 of the method for supplying power to of mobile terminal of the present invention.
Fig. 3 is the flow chart of the embodiment 1 of the method for supplying power to of mobile terminal of the present invention.
Embodiment
Present pre-ferred embodiments is provided, to describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
Embodiment 1
See Fig. 1, in the present embodiment, described mobile terminal is mobile phone, described mobile phone comprises the first battery, the second battery and the first switching circuit 11 be connected with described second battery with described first battery respectively and second switch circuit 12, and described mobile phone also comprises: control circuit 13, voltage detecting circuit 14,1 first judge module 15 and one second judge module 16.
Described voltage detecting circuit 14 is for the second voltage of the first voltage and described second battery that detect described first battery, described first judge module 15 is for judging that whether described first voltage is higher than 3.65 volts, if then described control circuit 13 is that described mobile phone is powered for the first switching circuit 11 described in conducting to adopt described first battery, and turns off described second switch circuit 12; Then described control circuit 13 is that described mobile phone is powered for second switch circuit 12 described in conducting to adopt described second battery if not, and turns off described first switching circuit 11.
Second judge module 16 described in when 12 conducting of second switch circuit judges that whether described second voltage is lower than 3.4 volts, if then described control circuit 13 is that described mobile phone is powered for the first switching circuit 11 described in conducting to adopt described first battery, and turns off described second switch circuit 12.Above-mentioned 3.65 volts is the preferred value of described first threshold, and 3.4 volts is the preferred value of described Second Threshold, 3.4 volts of magnitudes of voltage being battery and cannot powering.
Above-mentioned control circuit 13 realizes conducting switching circuit two by a negate device and turns off another switching circuit, and described negate circuit makes the same time only have a powered battery, and another battery can take off to be changed or takes off charging.
The mobile phone of the present embodiment can realize the power supply of double cell by simple circuit structure, the manufacturing cost of described mobile phone is lower.When a battery is powered, can change another battery, user can enjoy more sufficient electricity and obtain one electricity arbitrary way easily.
See Fig. 2, the present embodiment provides again a kind of method of supplying power to of mobile phone, described mobile phone comprises the first battery, the second battery and the first switching circuit be connected with described second battery with described first battery respectively and second switch circuit, and described method of supplying power to comprises the steps:
Step 100, detect the first voltage of described first battery and the second voltage of described second battery.
Step 101, judge that whether described first voltage is higher than 3.65 volts, if then perform step 102, then perform step 103 if not.
First switching circuit described in step 102, conducting is that described mobile phone is powered to adopt described first battery, and turns off described second switch circuit, then process ends.
Second switch circuit described in step 103, conducting is that described mobile phone is powered to adopt described second battery, and turns off described first switching circuit.
Step 104, judge that whether described second voltage is lower than 3.4 volts, if then perform step 105, then process ends if not.
First switching circuit described in step 105, conducting is that described mobile phone is powered to adopt described first battery, and turns off described second switch circuit.
By described method of supplying power to, mobile phone can realize the mutual power supply of double cell, and when a battery is powered, can change another battery, and user can enjoy more sufficient electricity and obtain one electricity arbitrary way easily.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, difference is only: described first switching circuit is connected to described first battery by one first battery interface, described first battery interface comprises one first signal pins and the first energization pins for the feeder ear that connects described first battery, the length 0.3mm shorter in the length of described first energization pins of described first signal pins, described control circuit is for monitoring the state of described first signal pins, and described in when described first signal pins is connected with described first battery, the first signal pins is low level.When described first signal pins and described first battery disconnect, described first signal pins level is driven high, and described control circuit detects that the first signal pins level is for turning off described first switching circuit and second switch circuit described in conducting after high level.
Described second switch circuit is connected to described second battery by one second battery interface, described second battery interface comprises a secondary signal pin and the second energization pins for the feeder ear that connects described second battery, the length 0.3mm shorter in the length of described second energization pins of described secondary signal pin, described control circuit is also for monitoring the state of described secondary signal pin, and when described secondary signal pin is connected with described second battery, described secondary signal pin is low level.When described secondary signal pin and described second battery disconnect, described secondary signal pin level is driven high, described control circuit detects that secondary signal pin level is turn off described second switch circuit after high level, first switching circuit described in conducting, if the first switching circuit connects the first battery, then the first battery is that described mobile phone is powered.
Signal pins is shorter than energization pins, described signal pins is after detecting that the signal pins of a battery disconnects, before driving another powered battery, the battery of cut-off signal pin is being powered always, guarantee the seamless replacing of battery, therefore no matter which battery is being powered with one that can change arbitrarily per family in two batteries of mobile phone, and can ensure the normal work of mobile phone.
Above-mentioned 0.3mm is a kind of preferred length, can guarantee double cell seamless switching.
Embodiment 3
A kind of method of supplying power to of mobile terminal, described mobile terminal is panel computer, described panel computer comprises the first battery, the second battery and the first switching circuit be connected with described second battery with described first battery respectively and second switch circuit, described first switching circuit is connected to described first battery by one first battery interface, described first battery interface comprises one first signal pins and the first energization pins for the feeder ear that connects described first battery, the length 0.3mm shorter in the length of described first energization pins of described first signal pins; Described second switch circuit is connected to described second battery by one second battery interface, described second battery interface comprises a secondary signal pin and the second energization pins for the feeder ear that connects described second battery, the length 0.3mm shorter in the length of described second energization pins of described secondary signal pin, described method of supplying power to comprises the steps:
Step 1000, detect the first voltage of described first battery and the second voltage of described second battery.
Step 1001, judge that whether described first voltage is higher than 3.65 volts, if then perform step 1002, then perform step 1005 if not.
First switching circuit described in step 1002, conducting is that described panel computer is powered to adopt described first battery, and turns off described second switch circuit.
Step 1003, monitor the state of described first signal pins.
Step 1004, turn off described first switching circuit when described first signal pins and described first battery disconnect and second switch circuit, then process ends described in conducting.
Second switch circuit described in step 1005, conducting is that described panel computer is powered to adopt described second battery, and turns off described first switching circuit.
Step 1006, monitor the state of described secondary signal pin.
Step 1007, turn off described second switch circuit when described secondary signal pin and described second battery disconnect and the first switching circuit described in conducting.
By signal pins than energization pins short and said method, no matter which battery is powering one that user can change arbitrarily in two batteries of panel computer, and can ensure the normal work of panel computer.
Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these execution modes, but these change and amendment all falls into protection scope of the present invention.
Claims (10)
1. a mobile terminal, it is characterized in that, it comprises the first battery, the second battery and the first switching circuit be connected with described second battery with described first battery respectively and second switch circuit, described mobile terminal also comprises: a control circuit, a voltage detecting circuit and one first judge module
Described voltage detecting circuit is for the second voltage of the first voltage and described second battery that detect described first battery, described first judge module is for judging that whether described first voltage is higher than a first threshold, if then described control circuit is used for the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit; Then described control circuit is used for second switch circuit described in conducting is if not that described mobile terminal is powered to adopt described second battery, and turns off described first switching circuit.
2. mobile terminal as claimed in claim 1, it is characterized in that, described mobile terminal comprises one second judge module, for judging that whether described second voltage is lower than a Second Threshold when second switch circuit turn-on, if then described control circuit is used for the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit.
3. mobile terminal as claimed in claim 1, it is characterized in that, described control circuit comprises a negate circuit, turns off described first switching circuit during for turning off second switch circuit described in described second switch circuit or conducting described in conducting during the first switching circuit.
4. mobile terminal as claimed in claim 2, it is characterized in that, the value of described first threshold is 3.65 volts, and the value of described Second Threshold is 3.4 volts.
5. mobile terminal as claimed in claim 1 or 2, it is characterized in that, described first switching circuit is connected to described first battery by one first battery interface, described first battery interface comprises one first signal pins and the first energization pins for the feeder ear that connects described first battery, the length of described first signal pins is less than the length of described first energization pins, described control circuit is for monitoring the state of described first signal pins, and turn off described first switching circuit when described first signal pins and described first battery disconnect and second switch circuit described in conducting, described second switch circuit is connected to described second battery by one second battery interface, described second battery interface comprises a secondary signal pin and the second energization pins for the feeder ear that connects described second battery, the length of described secondary signal pin is less than the length of described second energization pins, described control circuit also for monitoring the state of described secondary signal pin, and turns off described second switch circuit when described secondary signal pin and described second battery disconnect and the first switching circuit described in conducting.
6. mobile terminal as claimed in claim 5, is characterized in that, the length 0.3mm shorter in the length of described first energization pins of described first signal pins, the length 0.3mm shorter in the length of described second energization pins of described secondary signal pin.
7. the method for supplying power to of a mobile terminal, it is characterized in that, described mobile terminal comprises the first battery, the second battery and the first switching circuit be connected with described second battery with described first battery respectively and second switch circuit, and described method of supplying power to comprises the steps:
S
1, detect the first voltage of described first battery and the second voltage of described second battery;
S
2, judge that whether described first voltage is higher than a first threshold, if then perform step S
3, then perform step S if not
4;
S
3, the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit, then process ends;
S
4, second switch circuit described in conducting is that described mobile terminal is powered to adopt described second battery, and turns off described first switching circuit.
8. the method for supplying power to of mobile terminal as claimed in claim 7, is characterized in that, step S
4comprise:
S
41, second switch circuit described in conducting is that described mobile terminal is powered to adopt described second battery, and turns off described first switching circuit;
S
42, judge that whether described second voltage is lower than a Second Threshold, if then perform step S
43, then process ends if not;
S
43, the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit.
9. the method for supplying power to of mobile terminal as claimed in claim 7, it is characterized in that, described first switching circuit is connected to described first battery by one first battery interface, described first battery interface comprises one first signal pins and the first energization pins for the feeder ear that connects described first battery, and the length of described first signal pins is less than the length of described first energization pins; Described second switch circuit is connected to described second battery by one second battery interface, described second battery interface comprises a secondary signal pin and the second energization pins for the feeder ear that connects described second battery, the length of described secondary signal pin is less than the length of described second energization pins, step S
3comprise:
S
31, the first switching circuit described in conducting is that described mobile terminal is powered to adopt described first battery, and turns off described second switch circuit;
S
32, monitor the state of described first signal pins;
S
33, turn off described first switching circuit when described first signal pins and described first battery disconnect and second switch circuit, then process ends described in conducting;
Step S
4comprise:
S
41, second switch circuit described in conducting is that described mobile terminal is powered to adopt described second battery, and turns off described first switching circuit;
S
42, monitor the state of described secondary signal pin;
S
43, turn off described second switch circuit when described secondary signal pin and described second battery disconnect and the first switching circuit described in conducting.
10. the method for supplying power to of mobile terminal as claimed in claim 9, is characterized in that, the length 0.3mm shorter in the length of described first energization pins of described first signal pins, the length 0.3mm shorter in the length of described second energization pins of described secondary signal pin.
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| CN201310308355.2A CN104333051B (en) | 2013-07-22 | 2013-07-22 | Mobile terminal and method of supplying power to |
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| CN201310308355.2A CN104333051B (en) | 2013-07-22 | 2013-07-22 | Mobile terminal and method of supplying power to |
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| CN107733076A (en) * | 2017-11-24 | 2018-02-23 | 中山市电赢科技有限公司 | A kind of direct current pressure limiting uninterrupted power supply(ups) |
| CN108513632A (en) * | 2017-04-12 | 2018-09-07 | 深圳市柔宇科技有限公司 | Smartwatch and its power management system and electric quantity managing method |
| CN109412220A (en) * | 2017-08-18 | 2019-03-01 | 神讯电脑(昆山)有限公司 | Electronic device and its charging method and charging method |
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