CN202602341U - Digital display portable power source - Google Patents
Digital display portable power source Download PDFInfo
- Publication number
- CN202602341U CN202602341U CN 201220303770 CN201220303770U CN202602341U CN 202602341 U CN202602341 U CN 202602341U CN 201220303770 CN201220303770 CN 201220303770 CN 201220303770 U CN201220303770 U CN 201220303770U CN 202602341 U CN202602341 U CN 202602341U
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- lithium battery
- poly
- power source
- portable power
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Abstract
The utility model relates to a digital display portable power source. The digital display portable power source comprises a polymer lithium battery, a power management unit, a first universal serial bus (USB) interface, a single chip microcomputer detecting and control unit, an adjusting unit and a second USB interface, the power management unit is connected with the polymer lithium battery and performs charging management for the polymer lithium battery, the first USB interface is connected with an input end of the power management unit and provides charging input voltage for the power management unit, the single chip microcomputer detecting and control unit is used for detecting and controlling voltage and current of the polymer lithium battery, the adjusting unit is used for boosting the voltage of the polymer lithium battery and enables the polymer lithium battery to input voltage to a mobile electronic product power supply, and the second USB interface is connected with the adjusting unit and outputs voltage converted by the adjusting unit. The digital display portable power source has the advantages that the range of application is wide, the development prospect is good, the usage is convenient, and the mobile electronic product is convenient to charge for a user.
Description
Technical field
The utility model relates to the electronic circuit technology field, more particularly, relates to a kind of numeral and shows portable power source.
Background technology
Along with development of science and technology, a large amount of mobile electronic products occur in succession, and wherein, MP3, MP4, MP5, mobile phone, panel computer, digital camera etc. are used comparatively extensive in daily life.Move towards intelligent because digital electronic product is own now, almost be touch-screen like the smart mobile phone display screen comprehensively entirely, and background application software is many again; Power consumption is just big naturally, and product is attractive in appearance for pursuing, and all is designed to extra-thin outward appearance; So this machine not enough situation occurs from charged pool regular meeting; The general intelligence battery of mobile phone can only be used the electric weight about a day, becomes all will use inconvenience to cell-phone charging every day.Stop inadequately like the in use unexpected electric weight of audiovisual digital electronic product, will cause great inconvenience user's life.In addition, in these electronic products, mostly adopt the alternating current charging pattern, and for different electronic products, also correspondingly need the charger of different size, if the user goes out also can cause great inconvenience with the charger of going up different size.
The utility model content
The technical problem that the utility model will solve is, is prone to deficiency, awkward defective to the electric weight of the ultrathin electronic product of prior art, provides a kind of high, easy to use a kind of numeral of electric weight of slimming to show portable power source.
The utility model solves the technical scheme that its technical problem adopted: construct a kind of numeral and show portable power source, comprise poly-lithium battery; Be connected with said poly-lithium battery and it is carried out the PMU of Charge Management; Be connected first USB interface that it is provided the charging input voltage with said PMU input; Be used to detect the voltage, electric current of said poly-lithium battery and the single-chip microcomputer of its control is detected and control unit; Be used for the voltage of said poly-lithium battery is boosted, is the adjustment unit of mobile electronic product power input voltage; Be connected with said adjustment unit and with second USB interface of the voltage output after the said adjustment unit conversion.
Show in the portable power source in the described numeral of the utility model, also comprise be used to show and with said single-chip microcomputer detects and control unit is electrically connected display driver unit.
Show that in the described numeral of the utility model said display driver unit comprises slot interface in the portable power source; Be used for showing the display module of said poly-lithium battery electric weight with numeral or graphic form; Be connected with said slot interface, be used for the key switch that when said poly-lithium battery does not discharge and recharge, said display module shown; Be used to drive the display driver chip that said display module shows, said display driver chip one input is connected with said slot interface, and output is connected with display module.
Show that in the described numeral of the utility model said display module comprises common cathode charactron or LCD display in the portable power source.
Show that in the described numeral of the utility model said PMU comprises makes charging voltage be fixed on the charging chip of 4.2V in the portable power source, said charging chip also is connected with the resistance that charging current is set.
Show in the portable power source that in the described numeral of the utility model said adjustment unit comprises the adaptation module that the electric current that is used to adjust said poly-lithium battery makes it and mobile electronic product is suitable and when electric current is excessive, cut off the power supply; Be used for the DC/DC boost module that the voltage with said poly-lithium battery boosts and is connected with said adaptation module; The output current regulation module that is connected with said DC/DC boost module and the electric current of said DC/DC boost module output is adjusted.
Show that in the described numeral of the utility model the voltage range of said poly-lithium battery is 3.2V-4.2V in the portable power source; Said DC/DC boost module converts the output voltage of said poly-lithium battery into 5V output.
Show that in the described numeral of the utility model said first USB interface is a Micro type USB input interface in the portable power source; Said second USB interface is an A type USB output interface.
Show in the portable power source in the described numeral of the utility model, also comprise with said poly-lithium battery and connect and it is carried out the protected location of overvoltage, overcurrent protection; Said protected location comprises first protection module and second protection module that is used for overvoltage, overcurrent protection; Also comprise and be used to the 3rd protection module that said poly-lithium battery is charged under constant voltage, constant current state; Said second protection module, one end is connected with said first protection module, one end; The other end is connected with an end of said the 3rd protection module; The other end of said first protection module is connected with said poly-lithium battery negative pole, and the other end of said the 3rd protection module is connected with said poly-lithium battery is anodal.
Show in the portable power source that in the described numeral of the utility model said numeral shows that portable power source also comprises shell, said shell comprises support and the cover plate that is interlocked with said support.
The numeral of implementing the utility model shows portable power source; Has following beneficial effect: owing to use poly-lithium battery, have more high-energy-density, miniaturization, slimming, lightweight, high security, long circulation life and characteristics cheaply, can process arbitrary shape and size; Super thin product; Its unit energy has improved 50% than present general lithium ion battery, makes it applied widely, good development prospect; Because display module comprises common cathode charactron or LCD display, can intuitively show with numeral or graphic form battery electric quantity, and is more user-friendly; The user uses said numeral to show that portable power source can charge as mobile electronic product easily.
Description of drawings
Fig. 1 is the circuit block diagram sketch map that the utility model numeral shows portable power source first embodiment;
Fig. 2 is the physical circuit schematic diagram of first embodiment;
Fig. 3 is the built-in system structure chart of single-chip microcomputer among first embodiment;
Fig. 4 is the cover plate figure that numeral shows portable power source among first embodiment;
Fig. 5 is the support figure that numeral shows portable power source among first embodiment;
Fig. 6 adds the structural representation that numeral behind the shell shows portable power source among first embodiment;
Fig. 7 is the structural representation of traditional portable power source first display mode;
Fig. 8 is the structural representation of traditional portable power source second display mode;
Fig. 9 is the structural representation of traditional portable power source the 3rd display mode;
Figure 10 is the structural representation of traditional portable power source the 4th display mode;
Figure 11 is the common cathode charactron display structure sketch map that numeral shows portable power source among first embodiment;
Figure 12 is the display structure sketch map that numeral shows the LCD display of portable power source among first embodiment;
Figure 13 is the display structure sketch map that the utility model numeral shows portable power source second embodiment.
Mark among the figure: the 1-single-chip microcomputer detects and control unit; The 2-PMU; The 3-adjustment unit; The 31-adaptation module; The 32-DC/DC boost module; The 33-output current regulation module; The 4-protected location; 41-first protection module; 42-second protection module; 43-the 3rd protection module; 5-display driver unit; The S1-key switch; The CN1-slot interface; The U3-display driver chip; The 51-display module; The 6-poly-lithium battery; J1-first USB interface; J2-second USB interface; The 9-cover plate; The 10-support.
Embodiment
In order to let those of ordinary skill in the art can understand and implement the utility model, will combine accompanying drawing that the utility model embodiment is described further below.
Numeral at the utility model shows among portable power source first embodiment that this numeral shows that the circuit block diagram sketch map of portable power source is as shown in Figure 1, and Fig. 2 is the physical circuit schematic diagram that numeral shows portable power source among first embodiment.In Fig. 1, this numeral shows that portable power source comprises: poly-lithium battery 6, PMU 2, the first USB interface J1, single-chip microcomputer detect and control unit 1, first protection module 41, second protection module 42, the 3rd protection module 43, adaptation module 31, DC/DC boost module 32, output current regulation module 33, the second USB interface J2, key switch S1, slot interface CN1, display driver chip U3, display module 51; Wherein, First protection module 41, second protection module 42 and the 3rd protection module 43 constitute protected locations 4; Adaptation module 31, DC/DC boost module 32 and output current regulation module 33 constitute adjustment unit 3, and key switch S1, slot interface CN1, display driver chip U3 and display module 51 constitute display driver unit 5.Above-mentioned PMU 2 is connected with poly-lithium battery 6, and poly-lithium battery 6 is carried out Charge Management; The first USB interface J1 is connected with PMU 2 inputs, and to PMU 2 the charging input voltage is provided, and in this first embodiment, the first USB interface J1 is a Micro type USB input interface; Single-chip microcomputer detects and control unit 1 is used to detect the voltage, size of current of poly-lithium battery 6 and voltage, size of current are controlled; Protected location 4 and poly-lithium battery 6 also connect and it are carried out overvoltage, overcurrent protection; Adjustment unit 3 is used for the voltage of poly-lithium battery 6 is boosted, is the mobile electronic product power input voltage; The second USB interface J2 is connected with adjustment unit 3 and the voltage after adjustment unit 3 conversions is exported.Display driver unit 5 detects with single-chip microcomputer and control unit 1 is electrically connected, and is used to show.
Since poly-lithium battery compare with general lithium battery have the energy density height, more miniaturization, ultra-thinization, lightweight, long circulation life, and multiple clear superiorities such as high security and low cost are a kind of novel batteries.In shape, poly-lithium battery has ultra-thinization characteristic, can cooperate the needs of various products, is made into the battery of Any shape and capacity.And the unit energy of poly-lithium battery has improved 50% than present general lithium ion battery, makes it applied widely, good development prospect.In addition, because ultrathin outward appearance is mostly pursued in the design of electronic product, in order to comply with the development of this trend, in this first embodiment, the battery of portable power source has been selected poly-lithium battery for use.The normal working voltage scope of the poly-lithium battery among this first embodiment is 3.2V-4.2V.
As shown in Figure 2; PMU 2 comprises charging chip U1, and in this first embodiment, the model of charging chip U1 is TP4056; The charging voltage of charging chip U1 is fixed on 4.2V; Charging chip U1 also is connected with the resistance that charging current is set, and specifically, charging current is to adopt a resistance R 5 that is connected between the setting of constant current charge electric current and charging current test side PROG pin and the ground to set.When input voltage V+ shows that greater than numeral portable power source low-voltage detection threshold and charging chip U1's enables input CE when connecing high level; Charging chip U1 begins poly-lithium battery is charged; Charged state indication end
output low level, the expression charging is carried out.Among Fig. 2, BT+, BT-are respectively the positive pole and the negative pole of poly-lithium battery; If poly-lithium battery voltage is lower than 3V, charging chip U1 carries out precharge with little electric current to poly-lithium battery.When poly-lithium battery voltage surpasses 3V; Charging chip U1 adopts constant current mode that poly-lithium battery is charged, and charging current is confirmed by the 2nd pin (the constant current charge electric current is provided with and charging current test side PROG pin) of charging chip U1 and the resistance R 5 between the ground.When poly-lithium battery voltage during near 4.2V voltage, charging current reduces gradually, and charging chip U1 gets into the constant voltage charge pattern.When charging current is reduced to charging end threshold value; Charge cycle finishes; The charged state indication end of charging chip U1
output high-impedance state, battery charge are accomplished indication end
output electronegative potential.Here, it is 10% of constant current charge electric current that charging finishes threshold value, recharges threshold value when following when poly-lithium battery voltage drops to, and begins new charge cycle automatically.When input voltage power down or input voltage were lower than poly-lithium battery voltage, charging chip U1 got into the sleep pattern of low-power consumption, and poly-lithium battery end consumed current is less than 3 μ A, thereby had increased stand-by time.Connect low level if will enable input CE, charging chip U1 stops charging.Single-chip microcomputer U4 input port PH6 in single-chip microcomputer detection and the control unit 1; Band programmable pull-up resistance; The port level changes interruption; Input port PH6 accomplishes indication end
with battery charge and is connected; When charging is accomplished;
output becomes electronegative potential by high-impedance state; Corresponding input port PH6 port level changes, and at this moment single-chip microcomputer U4 interrupts, and stops poly-lithium battery being charged.The input pin PH5 of single-chip microcomputer U4 is common input pin in this first embodiment; Outside pin PH5, be connected in series one 100 ohm resistance R 20; Have arousal function, be connected with input V+, be used to detect numeral and show that whether portable power source is in charging through resistance R 19.
As shown in Figure 2; In this first embodiment; Second protection module, 42 1 ends are connected with first protection module, 41 1 ends; The other end of second protection module 42 is connected with an end of the 3rd protection module 43, and the other end of first protection module 41 is connected with poly-lithium battery negative pole BT-, and the other end of the 3rd protection module 43 is connected with the anodal BT+ of poly-lithium battery.First protection module 41 and second protection module 42 are used for poly-lithium battery is carried out overvoltage, overcurrent protection; First protection module 41 comprises chip U7, and second protection module 42 comprises chip U8, and the model of chip U7 and U8 is S8205A; Two S8205A cake core series connection; Be used for protection, when the poly-lithium battery charging voltage reaches 4.2V, stop charging and overcharge preventing the overcharging of poly-lithium battery, overdischarge and overcurrent; When the poly-lithium battery discharge voltage reaches 3.2V, stop discharge and put preventing; Certainly, in some cases also can be only with a S8205A cake core, though this situation is prone to cause chip to damage when big electric current, this situation is suitable not high but to the occasion of cost sensitivity to equipment requirements.The 3rd protection module 43 chips U6 are used to make poly-lithium battery under constant voltage, constant current state, to charge, and chip U6 is the DW01A cake core, and certainly, in some cases, chip U6 also can select the chip with identity function of other models for use.
In this first embodiment, the electric current that the P channel depletion type metal-oxide-semiconductor Q1 in the adaptation module 31 is used to adjust poly-lithium battery makes it and mobile electronic product is suitable and when electric current is excessive, cut off the power supply, in addition; Metal-oxide-semiconductor Q1 carries out overtemperature protection to poly-lithium battery; When temperature surpasses certain value, the output of metal-oxide-semiconductor Q1 turn-off current is when discharge; Temperature reaches 50 when spending, can no-voltage output; I/O port PH7 among the single-chip microcomputer U4; Band programmable pull-up resistance; The port level change to interrupt, and I/O port PH7 links to each other through the base stage of the NPN type triode Q3 in resistance R 6 and the adaptation module 31, and I/O port PH7 woke up when digital portable power source was charged.DC/DC boost module 32 is connected with adaptation module 31, is used for the voltage of poly-lithium battery is boosted, and DC/DC boost module 32 converts the output voltage of poly-lithium battery into 5V output; Among this first embodiment; Chip U2 in the DC/DC boost module 32 is used to boost, and the model of chip U2 is FP6297, and chip U2 self has overheat protector; Temperature exceeds certain value, and chip U2 cuts off the power supply automatically; Output current regulation module 33 is connected with DC/DC boost module 32 and the electric current of DC/DC boost module 32 outputs is adjusted, and output current is adjusted to 2A.The second USB interface J2 links to each other with output current regulation module 33, and the second USB interface J2 is an A type USB output interface.
In this first embodiment, display module 51 is used for showing said poly-lithium battery electric weight with numeral or graphic form; Key switch S1 is connected with slot interface CN1, is used for when poly-lithium battery does not discharge and recharge, making display module 51 to show; Display module 51 comprises common cathode charactron or LCD display; What Fig. 2 provided is the schematic diagram that adopts common cathode charactron display mode; In Fig. 2; Be provided with a plurality of LED1, be used for showing with digital form the electric weight of poly-lithium battery, the light on and off of the LED1 through diverse location are to show different electric weight; Display driver chip U3 is used to drive the common cathode charactron and shows; Display driver chip U3 one input (clock signal input terminal CLK) is connected with the 3rd pin of slot interface CN1; Its output is connected with display module 51 (common cathode charactron), and the model of the display driver chip U3 among this first embodiment is 74HC164, certainly; Under some other situation, also can be the chip for driving of other models; When poly-lithium battery does not discharge and recharge, the switch S 1 that pushes button, display module 51 (common cathode charactron) shows the electric weight of poly-lithium battery with digital form; Certainly, when adopting LCD display, demonstrate electric weight, voltage, electric current, temperature and the battery figure of poly-lithium battery with digital form.
Among this first embodiment, the built-in system structure chart of single-chip microcomputer U4 is as shown in Figure 3.The numeral of this first embodiment shows that portable power source also comprises shell; Fig. 4 is the cover plate figure that numeral shows the portable power source shell among first embodiment; Fig. 5 is the support figure that numeral shows the portable power source shell among first embodiment, and above-mentioned shell comprises support 10 and the cover plate 9 that is interlocked with support 10.Fig. 6 adds the structural representation that numeral behind the shell shows portable power source among first embodiment, in Fig. 6, the common cathode charactron in the display module 51 shows the electric weight of poly-lithium battery with the light on and off of digital form through a plurality of LED1.Fig. 7, Fig. 8, Fig. 9, Figure 10 are respectively the structural representations of several kinds of display modes of traditional portable power source; From Fig. 7, Fig. 8, Fig. 9, Figure 10, find out; The tradition portable power source can only show the capacity of the lithium battery of the inside; And can not see intuitively how many capacity of lithium battery is specially with digital form, make troubles for user's use.Figure 11 is the common cathode charactron display structure sketch map that numeral shows portable power source among first embodiment, in Figure 11, adopts the common cathode charactron to demonstrate the electric weight of poly-lithium battery intuitively with digital form.Figure 12 is the display structure sketch map that numeral shows the LCD display of portable power source among first embodiment; In Figure 12, adopt LCD display to demonstrate electric weight, voltage, electric current, temperature and the battery figure of poly-lithium battery intuitively with digital form, be convenient to user's use.
Numeral at the utility model shows among portable power source second embodiment; This numeral shows that the display structure sketch map of portable power source second embodiment is shown in figure 13; The difference of second embodiment and first embodiment is that among second embodiment, the second USB interface J2 comprises two A type USB output interfaces; Can adopt top charactron or LCD display to show simultaneously to two electronic product chargings like this.
In a word; In the above-described embodiments; Numeral shows that portable power source increases voltage detecting, battery capacity scaling function and temperature inductor in design; The voltage of battery or capacity carry out digital translation through single-chip microcomputer U4 and are connected on the display driver unit, and display driver chip can be 74HC164 or other chip drives.Display module comprises charactron or LCD display.Single-chip microcomputer U4 detects cell voltage through its power input VDD and VSS; Utilize detected voltage to be converted into electric weight; Drive display module through display driver chip and demonstrate electric quantity data; As showing, then to use the display driver chip of other models or directly control with single-chip microcomputer U4 with LCD display.
The above embodiment has only expressed several kinds of execution modes of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection range of the utility model.Therefore, the protection range of the utility model patent should be as the criterion with accompanying claims.
Claims (10)
1. a numeral shows portable power source, it is characterized in that, comprises poly-lithium battery; Be connected with said poly-lithium battery and it is carried out the PMU of Charge Management; Be connected first USB interface that it is provided the charging input voltage with said PMU input; Be used to detect the voltage, electric current of said poly-lithium battery and the single-chip microcomputer of its control is detected and control unit; Be used for the voltage of said poly-lithium battery is boosted, is the adjustment unit of mobile electronic product power input voltage; Be connected with said adjustment unit and with second USB interface of the voltage output after the said adjustment unit conversion.
2. numeral according to claim 1 shows portable power source, it is characterized in that, also comprise be used to show and with said single-chip microcomputer detects and control unit is electrically connected display driver unit.
3. numeral according to claim 2 shows portable power source, it is characterized in that said display driver unit comprises slot interface; Be used for showing the display module of said poly-lithium battery electric weight with numeral or graphic form; Be connected with said slot interface, be used for the key switch that when said poly-lithium battery does not discharge and recharge, said display module shown; Be used to drive the display driver chip that said display module shows, said display driver chip one input is connected with said slot interface, and output is connected with display module.
4. numeral according to claim 3 shows portable power source, it is characterized in that said display module comprises common cathode charactron or LCD display.
5. numeral according to claim 4 shows portable power source, it is characterized in that said PMU comprises makes charging voltage be fixed on the charging chip of 4.2V, and said charging chip also is connected with the resistance that charging current is set.
6. numeral according to claim 5 shows portable power source, it is characterized in that, said adjustment unit comprises the adaptation module that the electric current that is used to adjust said poly-lithium battery makes it and mobile electronic product is suitable and when electric current is excessive, cut off the power supply; Be used for the DC/DC boost module that the voltage with said poly-lithium battery boosts and is connected with said adaptation module; The output current regulation module that is connected with said DC/DC boost module and the electric current of said DC/DC boost module output is adjusted.
7. numeral according to claim 6 shows portable power source, it is characterized in that the voltage range of said poly-lithium battery is 3.2V-4.2V; Said DC/DC boost module converts the output voltage of said poly-lithium battery into 5V output.
8. numeral according to claim 7 shows portable power source, it is characterized in that said first USB interface is a Micro type USB input interface; Said second USB interface is an A type USB output interface.
9. show portable power source according to any described numeral of claim 1-8, it is characterized in that, also comprise with said poly-lithium battery and connect and it is carried out the protected location of overvoltage, overcurrent protection; Said protected location comprises first protection module and second protection module that is used for overvoltage, overcurrent protection; Also comprise and be used to the 3rd protection module that said poly-lithium battery is charged under constant voltage, constant current state; Said second protection module, one end is connected with said first protection module, one end; The other end is connected with an end of said the 3rd protection module; The other end of said first protection module is connected with said poly-lithium battery negative pole, and the other end of said the 3rd protection module is connected with said poly-lithium battery is anodal.
10. show portable power source according to any described numeral of claim 1-8, it is characterized in that said numeral shows that portable power source also comprises shell, said shell comprises support and the cover plate that is interlocked with said support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303770 CN202602341U (en) | 2012-06-27 | 2012-06-27 | Digital display portable power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303770 CN202602341U (en) | 2012-06-27 | 2012-06-27 | Digital display portable power source |
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| Publication Number | Publication Date |
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| CN202602341U true CN202602341U (en) | 2012-12-12 |
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| CN 201220303770 Expired - Fee Related CN202602341U (en) | 2012-06-27 | 2012-06-27 | Digital display portable power source |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399194A (en) * | 2013-08-16 | 2013-11-20 | 常熟市苏常工程质量检测有限公司 | Device for testing stability of working current |
| CN103607005A (en) * | 2013-11-13 | 2014-02-26 | 深圳市劲力思特科技有限公司 | Portable direct-charging cell |
| CN103762650A (en) * | 2014-01-21 | 2014-04-30 | 深圳市民展科技开发有限公司 | Single-USB-interface standby power source based on balance battery charging technology |
| CN103901783A (en) * | 2012-12-26 | 2014-07-02 | 产晶积体电路股份有限公司 | Power supply notification method |
| WO2015143793A1 (en) * | 2014-03-26 | 2015-10-01 | 中兴通讯股份有限公司 | Current control method and terminal device |
| CN106532847A (en) * | 2016-12-13 | 2017-03-22 | 江门市纳森科技有限公司 | Intelligent mobile power supply |
-
2012
- 2012-06-27 CN CN 201220303770 patent/CN202602341U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901783A (en) * | 2012-12-26 | 2014-07-02 | 产晶积体电路股份有限公司 | Power supply notification method |
| CN103399194A (en) * | 2013-08-16 | 2013-11-20 | 常熟市苏常工程质量检测有限公司 | Device for testing stability of working current |
| CN103607005A (en) * | 2013-11-13 | 2014-02-26 | 深圳市劲力思特科技有限公司 | Portable direct-charging cell |
| CN103762650A (en) * | 2014-01-21 | 2014-04-30 | 深圳市民展科技开发有限公司 | Single-USB-interface standby power source based on balance battery charging technology |
| CN103762650B (en) * | 2014-01-21 | 2016-01-20 | 深圳市民展科技开发有限公司 | A kind of single USB port stand-by power supply based on equilibrium charging technology |
| WO2015143793A1 (en) * | 2014-03-26 | 2015-10-01 | 中兴通讯股份有限公司 | Current control method and terminal device |
| CN106532847A (en) * | 2016-12-13 | 2017-03-22 | 江门市纳森科技有限公司 | Intelligent mobile power supply |
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