CN107733023A - Maximum current charging circuit may be selected - Google Patents
Maximum current charging circuit may be selected Download PDFInfo
- Publication number
- CN107733023A CN107733023A CN201711014193.6A CN201711014193A CN107733023A CN 107733023 A CN107733023 A CN 107733023A CN 201711014193 A CN201711014193 A CN 201711014193A CN 107733023 A CN107733023 A CN 107733023A
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- CN
- China
- Prior art keywords
- electrically connected
- photoelectrical coupler
- resistance
- unit
- capacity
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 42
- 230000005611 electricity Effects 0.000 claims description 17
- 230000005622 photoelectricity Effects 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 102220207965 rs778468876 Human genes 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- H—ELECTRICITY
- 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
-
- H02J7/0072—
-
- 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 discloses a kind of optional maximum current charging circuit, it includes power circuit unit, Auxiliary Power Units, current control unit and capacity recognition unit, power circuit unit is electrically connected with Auxiliary Power Units, and Auxiliary Power Units are electrically connected with current control unit；Capacity recognition unit is electrically connected with current control unit, and capacity recognition unit is electrically connected with lithium battery pack, and lithium battery pack is provided with ID interfaces.The present invention is by setting the first photoelectrical coupler, the second photoelectrical coupler, the 3rd photoelectrical coupler, the colelctor electrode of first resistor, second resistance and 3rd resistor respectively with photoelectrical coupler is coordinated to be electrically connected with, it is electrically connected with by capacity recognition unit and lithium battery pack, compare the anti-phase input terminal voltage of comparator with the voltage of ID interfaces to be controlled to whether photoelectrical coupler acts, so as to select the charging current of matching to charge lithium battery pack, it is easy to use, the ability of the compatible a variety of capacity Lithium batteries bags of increase lithium battery charging circuit.
Description
Technical field
The present invention relates to consumer electronics field, more particularly, to a kind of optional maximum current charging circuit.
Background technology
The single capacity Lithium batteries bag of traditional charger needs a kind of specialized lithium electricity charger of arranging in pairs or groups, and can so extend lithium electricity
Chi Bao bulk life time and optimal charge time.Different size capacity batteries bag is stretched out as the needs of various occasions can spread out,
Can arrange in pairs or groups the special charger of each capacity in a variety of capacity batteries bags, can so cause to use upper trouble.Such as Large Copacity electricity
Chi Bao is put into small-capacity cells bag collocation charger, and charging current is too small to lengthen its charging interval, causes user not side
Just；Or small-capacity cells bag is put into the charger of large-capacity battery pack collocation, its shorter battery life can be made because charging electricity
Flow through big.
Conventional charging circuit as shown in Figure 1, it uses primary constant-current and constant-voltage control circuit, wherein, resistance R2 ' is setting
The main components of maximum charging current, the output interface of charger include V+ ', V- ', NTC ', ID ' 4, respectively matching and lithium
Battery bag contacts together.
The content of the invention
Based on this, it is necessary to the problem of existing for above-mentioned background technology, there is provided a kind of optional maximum current charging electricity
Road, simplify lithium battery pack charging circuit, easy to use, the energy of the compatible a variety of capacity Lithium batteries bags of increase lithium battery charger
Power.
To achieve the above object, the invention discloses a kind of optional maximum current charging circuit, it includes power circuit
Unit, Auxiliary Power Units, current control unit and capacity recognition unit, the power circuit unit and Auxiliary Power Units electricity
Property connection, the power circuit unit be used for provide Auxiliary Power Units and current control unit work needed for voltage and electric current,
The Auxiliary Power Units are electrically connected with current control unit；The Auxiliary Power Units are provided with primary source unit, secondary
Level power supply unit and transformer unit, the current control unit are electrically connected with primary source unit, the secondary power list
Member provides voltage and electric current needed for lithium battery pack charging, and the transformer unit includes transformer, and the transformer is electrically connected with
Between the primary source unit and secondary power unit；The capacity recognition unit is electrically connected with current control unit,
The capacity recognition unit is electrically connected with lithium battery pack, and the lithium battery pack is provided with ID interfaces, the ID interfaces and capacity
Recognition unit is electrically connected with.
In one of the embodiments, the current control unit includes master control resistance, first resistor, second resistance, the
Three resistance, the first photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectrical coupler, described master control resistance one end, the first electricity
Hinder one end, second resistance one end and 3rd resistor one end to be electrically connected with primary source unit respectively, the master control resistance is another
End ground connection, the first resistor other end are electrically connected with the colelctor electrode of the first photoelectrical coupler triode, the first photoelectricity coupling
The grounded emitter of clutch triode, the second resistance other end are electrically connected with the current collection of the second photoelectrical coupler triode
Pole, the grounded emitter of the second photoelectrical coupler triode, the 3rd resistor other end are electrically connected with the 3rd photoelectricity coupling
The colelctor electrode of clutch triode, the grounded emitter of the 3rd photoelectrical coupler triode.
In one of the embodiments, the capacity recognition unit includes the first capacity identification circuit, the second capacity identifies
Circuit and the 3rd capacity identification circuit, the first capacity identification circuit include first comparator and the first photoelectrical coupler, institute
The in-phase input end for stating first comparator is electrically connected with by the 4th resistance and ID interfaces, the output end electricity of the first comparator
Property connection the first photoelectrical coupler diode anode, the minus earth of the first photoelectrical coupler diode；Described second
Capacity identification circuit includes the second comparator and the second photoelectrical coupler, and the in-phase input end of second comparator passes through the 5th
Resistance is electrically connected with ID interfaces, and the output end of second comparator is electrically connected with the sun of the second photoelectrical coupler diode
Pole, the minus earth of the second photoelectrical coupler diode；The 3rd capacity identification circuit includes the 3rd comparator and the
Three photoelectrical couplers, the in-phase input end of the 3rd comparator are electrically connected with by the 6th resistance and ID interfaces, and the described 3rd
The output end of comparator is electrically connected with the anode of the 3rd photoelectrical coupler diode, the moon of the 3rd photoelectrical coupler diode
Pole is grounded.
In one of the embodiments, the capacity recognition unit also includes the 7th resistance, described 7th resistance one end with
ID interfaces are electrically connected with, the 7th resistance other end ground connection.
In summary, the optional maximum current charging circuit of the present invention is by setting the first photoelectrical coupler, the second photoelectricity
Coupler, the 3rd photoelectrical coupler, coordinate first resistor, second resistance and the 3rd resistor colelctor electrode with photoelectrical coupler respectively
Be electrically connected with, be electrically connected with by capacity recognition unit and lithium battery pack, by compare the anti-phase input terminal voltage of comparator with
The voltage of ID interfaces is controlled to whether photoelectrical coupler acts, so as to select the charging current of matching to lithium battery pack
Charged, easy to use, the ability of the compatible a variety of capacity Lithium batteries bags of increase lithium battery charging circuit.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of traditional charging circuit；
Fig. 2 is a kind of circuit theory diagrams of embodiment of the optional maximum current charging circuit of the present invention；
Fig. 3 is the circuit theory diagrams inside lithium battery pack of the present invention；
Fig. 4 is the circuit theory diagrams of capacity recognition unit of the present invention.
Embodiment
As shown in Figures 2 to 4, the optional maximum current charging circuit of the present invention includes power circuit unit 100, auxiliary electricity
Source unit 200, current control unit 300 and capacity recognition unit 400, the power circuit unit 100 and Auxiliary Power Units
200 are electrically connected with, and the power circuit unit 100 is used to provide Auxiliary Power Units 200 and the work of current control unit 300 institute
Voltage and electric current are needed, the Auxiliary Power Units 200 are electrically connected with current control unit 300, the Auxiliary Power Units 200
For traditional primary constant-current and constant-voltage control circuit, the Auxiliary Power Units 200 are provided with primary source unit 210, secondary electrical
Source unit 220 and transformer unit 230, the current control unit 300 are electrically connected with primary source unit 210, described time
The lithium battery pack 500 that level power supply unit 220 provides charge needed for voltage and electric current, the transformer unit 230 include transformer T,
The transformer T is electrically connected between the primary source unit 210 and secondary power unit 220；The capacity identification is single
Member 400 is electrically connected with current control unit 300, and the capacity recognition unit 400 is used to identify that the battery of lithium battery pack 500 to hold
Amount.
Specifically, the current control unit 300 includes master control resistance R2, first resistor Rb, second resistance Rc, the 3rd electricity
Hinder Rd, the first photoelectrical coupler triode U2A, the second photoelectrical coupler triode U3A and the 3rd photoelectrical coupler triode
U4A, described master control resistance R2 one end, first resistor Rb one end, second resistance Rc one end and 3rd resistor Rd one end respectively with just
Level power supply unit 210 is electrically connected with, master control resistance R2 other ends ground connection, and the first resistor Rb other ends are electrically connected with the
One photoelectrical coupler triode U2A colelctor electrode, the grounded emitter of the first photoelectrical coupler triode U2A, described
The two resistance Rc other ends are electrically connected with the second photoelectrical coupler triode U3A colelctor electrode, the pole of the second photoelectrical coupler three
Pipe U3A grounded emitter, the 3rd resistor Rd other ends are electrically connected with the 3rd photoelectrical coupler triode U4A current collection
Pole, the grounded emitter of the 3rd photoelectrical coupler triode U4A.
The capacity recognition unit 400 is electrically connected with lithium battery pack 500, and voltage stabilizing is provided with the lithium battery pack 500
The reference voltage for 5V is exported, the lithium battery pack 500 is provided with ID interfaces 510, the ID interfaces 510 and capacity recognition unit
400 are electrically connected with, and to identify the battery capacity of lithium battery pack 500, the lithium battery pack 500 has internal resistance of cell R_ID, institute
Internal resistance of cell R_ID is stated to be connected with ID interfaces 510；The capacity recognition unit 400 includes the first capacity identification circuit 410, second
The capacity identification circuit 430 of capacity identification circuit 420 and the 3rd, the first capacity identification circuit 410 include first comparator
U20A and the first photoelectrical coupler diode U2B, the first comparator U20A in-phase input end by the 4th resistance R27 with
ID interfaces 510 are electrically connected with, and the output end of the first comparator U20A is electrically connected with the first photoelectrical coupler diode U2B's
Anode, the minus earth of the first photoelectrical coupler diode U2B；The second capacity identification circuit 420 includes the second ratio
Pass through the 5th resistance compared with device U20B and the second photoelectrical coupler diode U3B, the in-phase input end of the second comparator U20B
R37 and ID interfaces 510 are electrically connected with, and the output end of the second comparator U20B is electrically connected with the second photoelectrical coupler diode
U3B anode, the minus earth of the second photoelectrical coupler diode U3B；The 3rd capacity identification circuit 430 includes the
Three comparator U20C and the 3rd photoelectrical coupler diode U4B, the in-phase input end of the 3rd comparator U20C pass through the 6th
Resistance 47 and ID interfaces 510 are electrically connected with, and the output end of the 3rd comparator U20C is electrically connected with the 3rd photoelectrical coupler two
Pole pipe U4B anode, the minus earth of the 3rd photoelectrical coupler diode U4B.
Wherein, the first photoelectrical coupler triode U2A and the first photoelectrical coupler diode U2B forms complete first light
Electric coupler, the second photoelectrical coupler triode U3A and the second photoelectrical coupler diode U3B form complete second photoelectricity coupling
Clutch, the 3rd photoelectrical coupler triode U4A and the 3rd photoelectrical coupler diode U4B form complete 3rd photoelectric coupling
Device.
The capacity recognition unit 400 also includes the 7th resistance R28, described 7th resistance R28 one end and the electricity of ID interfaces 510
Property connection, the 7th resistance R28 other ends ground connection, voltage is the homophase input terminal voltage of comparator at the ID interfaces 510,
The in-phase input end of comparator is compared with the voltage of the inverting input of comparator, as long as the in-phase input end electricity of comparator
For pressure more than the anti-phase input terminal voltage of comparator, photoelectrical coupler is action；On the contrary, the anti-phase input terminal voltage of comparator is big
In the voltage of the in-phase input end of comparator, photoelectrical coupler is failure to actuate.
When the present invention is specifically used, battery capacity 2Ah, 4Ah, 6Ah, 8Ah lithium battery pack 500 is selected to be filled respectively
Electricity, wherein battery capacity are that the internal resistance of 2Ah, 4Ah, 6Ah, 8Ah lithium battery pack 500 is respectively 680K, 330K, 100K, 51K,
The 7th resistance R28 resistance R28=100K is selected, now, when capacity recognition unit 400 and the electric connection of lithium battery pack 500,
Magnitude of voltage at ID interfaces 510 is respectively 0.641V, 1.162V, 2.5V, 3.311V.
When the present invention charges to the lithium battery pack 500 that battery capacity is 2Ah, the negative terminal voltage of three comparators is most
Low is 1V, and now, the first photoelectrical coupler, the second photoelectrical coupler and the 3rd photoelectrical coupler are failure to actuate, therefore electric current
Master control resistance R2, first resistor Rb, second resistance Rc, 3rd resistor Rd equivalent resistances are master control resistance R2 in control unit 300
Resistance value, the output current of primary source unit 210 will not change, thus the output current of secondary power unit 220 will not
Change.
When the present invention charges to the lithium battery pack 500 that battery capacity is 4Ah, the electricity of first comparator U20A negative terminals
To press as 1V, the voltage of the second comparator U20B negative terminals is 2V, now, and the first photoelectrical coupler diode U2B conductings, the first photoelectricity
Coupler triode U2A is turned on, and the second photoelectrical coupler, the 3rd photoelectrical coupler are failure to actuate, master control resistance R2 and first resistor
Rb is in and is connected in parallel state, and the total resistance of resistor coupled in parallel diminishes, then the output current of primary source unit 210 becomes big thus secondary
The output current of level power supply unit 220 becomes greatly 4A, is effectively guaranteed the maximum current of charging circuit and of battery capacity
With stability.
Similarly, when invention is charged to the lithium battery pack 500 that battery capacity is 6Ah, first comparator U20A negative terminals
Voltage be 1V, the voltage of the second comparator U20B negative terminals is 2V, and the voltage of the 3rd comparator U20C negative terminals is 3V, now,
One photoelectrical coupler, the action of the second photoelectrical coupler, the 3rd photoelectrical coupler are failure to actuate, master control resistance R2 and first resistor Rb,
Second resistance Rc is in and is connected in parallel state, and the total resistance of resistor coupled in parallel diminishes, then the output current of primary source unit 210 becomes
Greatly, thus secondary power unit 220 output current become greatly 6A.
When invention is charged to the lithium battery pack 500 that battery capacity is 8Ah, the voltage of first comparator U20A negative terminals
For 1V, the voltage of the second comparator U20B negative terminals is 2V, and the voltage of the second comparator U20C negative terminals is 3V, now, the first photoelectricity
Coupler, the second photoelectrical coupler, the action of the 3rd photoelectrical coupler, master control resistance R2 and first resistor Rb, second resistance Rc, the
Three resistance Rd are in and are connected in parallel state, and the total resistance of resistor coupled in parallel diminishes, then the output current of primary source unit 210 becomes big,
Thus the output current of secondary power unit 220 becomes greatly 8A.
In summary, the optional maximum current charging circuit of the present invention is by setting the first photoelectrical coupler, the second photoelectricity
Coupler, the 3rd photoelectrical coupler, coordinate first resistor Rb, second resistance Rc and 3rd resistor Rd respectively with photoelectrical coupler
Colelctor electrode is electrically connected with, and is electrically connected with by capacity recognition unit 400 and lithium battery pack 500, by comparing the anti-phase of comparator
Input terminal voltage is controlled with the voltage at ID interfaces 510 to whether photoelectrical coupler acts, so as to select filling for matching
Electric current charges to lithium battery pack 500, easy to use, the compatible a variety of capacity Lithium batteries bags of increase lithium battery charging circuit
500 ability.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (4)
- A kind of 1. optional maximum current charging circuit, it is characterised in that：Including power circuit unit, Auxiliary Power Units, electricity Flow control unit and capacity recognition unit, the power circuit unit are electrically connected with Auxiliary Power Units, the power circuit Unit is used to provide voltage and electric current needed for Auxiliary Power Units and current control unit work, the Auxiliary Power Units and electricity Flow control unit is electrically connected with；The Auxiliary Power Units are provided with primary source unit, secondary power unit and transformer list Member, the current control unit are electrically connected with primary source unit, and the secondary power unit provides lithium battery pack charging institute Need voltage and electric current, the transformer unit includes transformer, the transformer be electrically connected at the primary source unit with Between secondary power unit；The capacity recognition unit is electrically connected with current control unit, the capacity recognition unit and lithium Battery bag is electrically connected with, and the lithium battery pack is provided with ID interfaces, and the ID interfaces are electrically connected with capacity recognition unit.
- 2. optional maximum current charging circuit according to claim 1, it is characterised in that：The current control unit bag Include master control resistance, first resistor, second resistance, 3rd resistor, the first photoelectrical coupler triode, the pole of the second photoelectrical coupler three Pipe and the 3rd photoelectrical coupler triode, described master control resistance one end, first resistor one end, second resistance one end and 3rd resistor One end is electrically connected with primary source unit respectively, the master control resistance other end ground connection, and the first resistor other end is electrical Connect the colelctor electrode of the first photoelectrical coupler triode, the grounded emitter of the first photoelectrical coupler triode, described The two resistance other ends are electrically connected with the colelctor electrode of the second photoelectrical coupler triode, the hair of the second photoelectrical coupler triode Emitter grounding, the 3rd resistor other end are electrically connected with the colelctor electrode of the 3rd photoelectrical coupler triode, the 3rd photoelectricity The grounded emitter of coupler triode.
- 3. optional maximum current charging circuit according to claim 1 or 2, it is characterised in that：The capacity identification is single Member includes the first capacity identification circuit, the second capacity identification circuit and the 3rd capacity identification circuit, the first capacity identification electricity Road includes first comparator and the first photoelectrical coupler diode, and the in-phase input end of the first comparator passes through the 4th resistance It is electrically connected with ID interfaces, the output end of the first comparator is electrically connected with the anode of the first photoelectrical coupler diode, institute State the minus earth of the first photoelectrical coupler diode；The second capacity identification circuit includes the second comparator and the second photoelectricity Coupler diode, the in-phase input end of second comparator are electrically connected with by the 5th resistance and ID interfaces, and described second The output end of comparator is electrically connected with the anode of the second photoelectrical coupler diode, the moon of the second photoelectrical coupler diode Pole is grounded；The 3rd capacity identification circuit includes the 3rd comparator and the 3rd photoelectrical coupler diode, and the described 3rd compares The in-phase input end of device is electrically connected with by the 6th resistance and ID interfaces, and the output end of the 3rd comparator is electrically connected with the 3rd The anode of photoelectrical coupler diode, the minus earth of the 3rd photoelectrical coupler diode.
- 4. optional maximum current charging circuit according to claim 3, it is characterised in that：The capacity recognition unit is also Including the 7th resistance, described 7th resistance one end is electrically connected with ID interfaces, the 7th resistance other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014193.6A CN107733023A (en) | 2017-10-26 | 2017-10-26 | Maximum current charging circuit may be selected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014193.6A CN107733023A (en) | 2017-10-26 | 2017-10-26 | Maximum current charging circuit may be selected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107733023A true CN107733023A (en) | 2018-02-23 |
Family
ID=61212832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711014193.6A Pending CN107733023A (en) | 2017-10-26 | 2017-10-26 | Maximum current charging circuit may be selected |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107733023A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05184076A (en) * | 1992-01-08 | 1993-07-23 | Hitachi Ltd | Secondary battery and charger therefor |
| US5289101A (en) * | 1990-04-27 | 1994-02-22 | Fuji Electric Co., Ltd. | Battery charger with charging current controller |
| CN1174439A (en) * | 1996-07-06 | 1998-02-25 | 三星电子株式会社 | Charging device for commonly charging various kinds of battery |
| CN106026327A (en) * | 2016-02-05 | 2016-10-12 | 广东欧珀移动通信有限公司 | Charging device, charging method, power adapter and terminal |
| CN106849274A (en) * | 2017-04-05 | 2017-06-13 | 攀枝花学院 | Campatible quick charger |
| CN207504604U (en) * | 2017-10-26 | 2018-06-15 | 东莞启益电器机械有限公司 | Maximum current charging circuit may be selected |
-
2017
- 2017-10-26 CN CN201711014193.6A patent/CN107733023A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5289101A (en) * | 1990-04-27 | 1994-02-22 | Fuji Electric Co., Ltd. | Battery charger with charging current controller |
| JPH05184076A (en) * | 1992-01-08 | 1993-07-23 | Hitachi Ltd | Secondary battery and charger therefor |
| CN1174439A (en) * | 1996-07-06 | 1998-02-25 | 三星电子株式会社 | Charging device for commonly charging various kinds of battery |
| CN106026327A (en) * | 2016-02-05 | 2016-10-12 | 广东欧珀移动通信有限公司 | Charging device, charging method, power adapter and terminal |
| CN106849274A (en) * | 2017-04-05 | 2017-06-13 | 攀枝花学院 | Campatible quick charger |
| CN207504604U (en) * | 2017-10-26 | 2018-06-15 | 东莞启益电器机械有限公司 | Maximum current charging circuit may be selected |
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Application publication date: 20180223 |
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