CN207218276U - A kind of charging device - Google Patents
A kind of charging device Download PDFInfo
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- CN207218276U CN207218276U CN201720828862.2U CN201720828862U CN207218276U CN 207218276 U CN207218276 U CN 207218276U CN 201720828862 U CN201720828862 U CN 201720828862U CN 207218276 U CN207218276 U CN 207218276U
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Abstract
The application provides a kind of charging device, and charging device includes control unit, adjustment unit, charhing unit and power supply unit.Control unit is connected to adjustment unit, charhing unit and power supply unit, and adjustment unit is connected to charhing unit；Charhing unit is used to charge for battery；Power supply unit is used to power for external equipment；Adjustment unit includes the second MOS transistor and the 3rd MOS transistor；Control unit can detect the output current Iout of power supply unit and the charging current Ichg of charhing unit, input total current Iin is calculated by certain calculation method, so as to adjust the PWM duty cycle of the second MOS transistor and the 3rd MOS transistor, and then Ichg is adjusted, realize the effect for maintaining input total current Iin stable.
Description
Technical field
The present invention relates to electronics field, and in particular to a kind of charging device and the discharge source path management side when filling
Method.
Background technology
Charging device and portable power source of the prior art, it realizes that playing function is to defeated by battery booster when filling
Go out USB port power supply, however, when electrical equipment electric quantity consumption is larger, it is possible that what the electricity of charging device the more filled the more few
Phenomenon, and due to having carried out secondary booster, the overall conversion efficiency of charging device is extremely low, heating is also very serious.Further, since
Existing charging device, it is through being realized by battery discharge, i.e., battery is electrically charged while again when being powered for external equipment
Electric discharge, this causes the life-span of battery to greatly shorten.
The content of the invention
The application provides a kind of charging device, and it includes control unit, adjustment unit, charhing unit and power supply unit.Institute
State control unit and be connected to the adjustment unit, the charhing unit and said supply unit, the adjustment unit is connected to institute
State charhing unit；The charhing unit is used to charge for battery；Said supply unit is used to power for external equipment；The regulation
Unit includes the second MOS transistor and the 3rd MOS transistor；Described control unit is used to detect battery in the charhing unit
The output current of charging current and said supply unit, adjusted according to the value of the value of the charging current detected and output current
The PWM duty cycle of the second MOS transistor and the 3rd MOS transistor in the adjustment unit is saved, to maintain the input of charging device
The charging current is adjusted in the case that total current is stable.
The application also provides a kind of discharge source path management method when filling of charging device, and its process is：Detection charging
The value of electric current and output current；It is single according to the value of the value of the charging current detected the and output current regulation regulation
The PWM duty cycle of second MOS transistor and the 3rd MOS transistor in member, to maintain the input total current of charging device stabilization
In the case of adjust the charging current.
The present invention charging device and when filling discharge source path management method by monitor output current Iout with charging
Electric current Ichg, input total current Iin is calculated by certain calculation method, so as to adjust the second MOS transistor and the 3rd MOS
The PWM duty cycle and then regulation Ichg of transistor, can maintain to input total current Iin stabilizations.
Brief description of the drawings
Fig. 1 is the charging device structural representation of embodiment one；
Fig. 2 is the charging device electrical block diagram of embodiment one；
Fig. 3 is USB port structural representation；
Fig. 4 is the charging device electrical block diagram of embodiment two；
Fig. 5 is the charging device electrical block diagram of embodiment three.
Embodiment
The present invention is described in further detail below by embodiment combination accompanying drawing.Wherein different embodiments
Middle similar component employs associated similar element numbers.In the following embodiments, many detailed descriptions be in order to
The application is better understood.However, those skilled in the art can be without lifting an eyebrow recognize, which part feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Certain operations that please be related are not shown in the description or description, and this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, be described in detail these associative operations be not it is necessary, they
The general technology knowledge of description and this area in specification can completely understand associative operation.
In addition, feature described in this description, operation or feature can combine to form respectively in any suitable way
Kind embodiment.Meanwhile each step in method description or action can also can be aobvious and easy according to those skilled in the art institute
The mode carry out order exchange or adjustment seen.Therefore, the various orders in specification and drawings are intended merely to clearly describe a certain
Individual embodiment, necessary order is not meant to be, wherein some sequentially must comply with unless otherwise indicated.
It is herein part institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any order or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).
Embodiment one：
As shown in figure 1, the charging device that the band edge of the present embodiment fills side discharge source path management includes input block 05, control
Unit 01, adjustment unit 02, charhing unit 03 and power supply unit 04 processed.Input block 05 is connected to control unit 01, regulation list
Member 02 and power supply unit 04, for providing input current for charging device so that control unit 01 and adjustment unit 02 receive outside
Portion's input current；Control unit 01 is connected to adjustment unit 02, charhing unit 03 and power supply unit 04, and adjustment unit 02 is connected to
Control unit 01, charhing unit 03 and input block 05；Charhing unit 03 is used to charge for battery；It is outer that power supply unit 04, which is used for,
Portion's equipment power supply.Adjustment unit 02 includes the 2nd PMOS (P-Metal Oxide Semiconductor, Pasitive
Channel Metal Oxide Semiconductor, P-type mos) transistor Q2 and the 3rd NMOS (N-
Metal Oxide Semiconductor, Negative channel Metal Oxide Semiconductor, N-type metal
Oxide semiconductor) transistor Q3.Control unit 01 is used to detect the value of the charging current of battery and power supply in charhing unit 03
The value of the output current of unit 04, according to the second PMOS transistor Q2 in the charging current and output current adjustment adjustment unit 02
With the 3rd nmos pass transistor Q3 PWM (Pulse Width Modulation, pulse width modulation) dutycycle, to maintain to charge
The charging current is adjusted in the case that the input total current (charge total current) of device is stable, due to the outside of charging device
Power input Vin is connected to the output end of adapter, and therefore, the input total current of charging device is that the output of adapter is total
Electric current.Charging device main body circuit framework is synchronous BUCK reduction voltage circuits；It should be noted that the effect of adapter here is
AC power is converted into the external input power for being adapted to charging device, in certain embodiments, this charging device can include
The adapter, the adapter can not also be included.
Specifically, as shown in Fig. 2 input block 05 include first resistor R1, the 5th resistance R5, the 18th resistance R18 and
First PMOS transistor Q1.First resistor R1 the first pole and the first PMOS transistor Q1 drain electrode pass through external power source Vin ends
Mouth is connected to adapter；First PMOS transistor Q1 source electrode is connected to the second PMOS transistor Q2 of adjustment unit 02 source
Pole, its grid are connected to the CHG_EN mouths of controller 011；First resistor R1 the second pole connects with the 5th resistance R5 the first pole
To the CHG_DET mouths of controller 011；5th resistance R5 the second pole ground connection.18th resistance R18 the first pole is connected to first
PMOS transistor Q1 source electrode, its second pole are connected to the first PMOS transistor Q1 grid.First PMOS transistor Q1 can be with
Prevent cell voltage or battery booster voltage from pouring in down a chimney to charging device Vin ends.In certain embodiments, control unit 01 passes through inspection
Survey port and detect whether input block 05 is connected with external power source, when detect be connected with external power source when, then open first
PMOS transistor Q1, conversely, then turning off PMOS transistor Q1, so it can prevent cell voltage from pouring in down a chimney to external power input
Vin。
The PWM that adjustment unit 02 is exported by control unit 01 is come regulating cell charging current, including the first electric capacity C1,
Two PMOS transistor Q2, the 3rd nmos pass transistor Q3, the first inductance L1 and the second electric capacity C2.First electric capacity C1 the first pole and
Two PMOS transistor Q2 source electrode is connected to the first PMOS transistor Q1 of input block 05 source electrode, is additionally coupled to power supply unit
04, it is additionally coupled to operating voltage end VCC；First electric capacity C1 the second pole ground connection；Second PMOS transistor Q2 drain electrode and the 3rd
Nmos pass transistor Q3 drain electrode is connected to the first inductance L1 the first pole；Second PMOS transistor Q2 grid can be directly connected to
To the PWM1 mouths of controller 011, the 3rd nmos pass transistor Q3 grid can be directly connected to the PWM2 mouths of controller 011；The
Three nmos pass transistor Q3 source ground；First inductance L1 the second pole and the second electric capacity C2 the first pole are connected to charhing unit
03 poles of second resistance R2 first；Second electric capacity C2 the second pole ground connection.
For make circuit in further detail, optimization, the control unit of the present embodiment includes controller 011, the 6th resistance R6, the 4th
NPN type triode Q4, the 8th PNP type triode Q8, the 9th NPN type triode Q9, the 9th resistance R9, the 14th resistance R14,
12 resistance R12, the tenth NPN type triode Q10, the 11st PNP type triode Q11, the 12nd NPN type triode Q12, the tenth
Six resistance R16, the 17th resistance R17.Controller 011 preferably by single-chip microcomputer, it include CHG_EN mouths, CHG_DET mouths,
The ports such as PWM1 mouths, PWM2 mouths.
6th resistance R6 the first pole and the 4th NPN type triode Q4 colelctor electrode are connected to the second PMOS transistor Q2's
Source electrode；4th NPN type triode Q4 emitter stage and the 8th PNP type triode Q8 emitter stage are connected to the second PMOS transistor
Q2 grid；4th NPN type triode Q4 base stage and the 8th PNP type triode Q8 base stage are connected to the of the 6th resistance R6
Two poles and the 9th NPN type triode Q9 colelctor electrode；9th NPN type triode Q9 base stage is connected to the second of the 9th resistance R9
Pole and the 14th resistance R14 the first pole；8th PNP type triode Q8 colelctor electrode, the 9th NPN type triode Q9 emitter stage
It is grounded with the 14th resistance R14 the second pole；9th resistance R9 the first pole is connected to the PWM1 mouths of controller 011.
12nd resistance R12 the first pole and the tenth NPN type triode Q10 colelctor electrode are connected to operating voltage end VCC；
Tenth NPN type triode Q10 emitter stage and the 11st PNP type triode Q11 emitter stage are connected to the 3rd nmos pass transistor
Q3 grid；Tenth NPN type triode Q10 base stage and the 11st PNP type triode Q11 base stage are connected to the 12nd resistance
R12 the second pole and the 12nd NPN type triode Q12 colelctor electrode；12nd NPN type triode Q12 base stage is connected to
16 resistance R16 the second pole and the 17th resistance R17 the first pole；11st PNP type triode Q11 colelctor electrode, the tenth
Two NPN type triode Q12 emitter stage and the 17th resistance R17 the second pole ground connection；16th resistance R16 the first pole connection
To the PWM2 mouths of controller 011.
Charhing unit 03 includes second resistance R2,3rd resistor R3, the 7th resistance R7, the tenth resistance R10, the 11st resistance
R11, the 15th resistance R15, the 3rd electric capacity C3, the 5th electric capacity C5 and the 7th nmos pass transistor Q7.Second resistance R2 the first pole
First the second poles of inductance L1 of adjustment unit 02 are connected to 3rd resistor R3 the first pole, are additionally operable to be connected to battery to be charged
Positive pole (Vbat is anode connection end)；Second resistance R2 the second pole and the 3rd electric capacity C3 the first pole are connected to controller
011 Vset mouths；3rd electric capacity C3 the second pole ground connection；7th resistance R7 the first pole and the 7th nmos pass transistor Q7 drain electrode
For being connected to GND to be charged；7th resistance R7 the second pole and the 7th nmos pass transistor Q7 source electrode are connected to the tenth
Resistance R10 the second pole, it is additionally coupled to the 15th resistance R15 the first pole；Tenth resistance R10 the first pole and the 5th electric capacity C5
The first pole be connected to the Ichg mouths of controller 011；5th electric capacity C5 the second pole ground connection；3rd resistor R3 the second pole and
Seven nmos pass transistor Q7 grid is connected to the 11st resistance R11 the first pole；11st resistance R11 the second pole is connected to
15 resistance R15 the first pole, the 15th resistance R15 the second pole ground connection.
Charhing unit 03 is contained by the 7th nmos pass transistor Q7, the 7th resistance R7,3rd resistor R3, the 11st resistance
The cell anti-reverse that R11 is formed connects circuit structure, and this partial circuit is used for preventing the phenomenon for causing circuit burnout after battery reversal connection, with
The major function of this patent has no direct relation, is mainly used to enhanced products function；It is made up of second resistance R2, the 3rd electric capacity C3
Battery voltage detection interface circuit structure, for providing detection cell voltage port for control unit 01 to detect；By the 15th
The battery charge detection circuit structure that resistance R15, the tenth resistance R10, the 5th electric capacity C5 are formed, for providing detection battery
Detected for control unit 01 charging current port.
Power supply unit 04 includes power supply port, the 6th nmos pass transistor Q6, the 13rd resistance R13, the 8th resistance R8 and the 4th
Electric capacity C4.Power supply port is used to connect with external equipment, and power supply port includes multiple pins, and one of pin is connected to input block
05 the first PMOS transistor Q1 source electrode, another pin are connected to the 6th nmos pass transistor Q6 drain electrode.
Power supply port preferably by any specification USB (Universal Serial Bus) mouth, for example, as shown in figure 3,
The USB port 06 of the present embodiment includes the first pin 061, second pin 062, the 3rd pin 063, the 4th pin 064, the 5th pin
065 and the 6th pin 066.Wherein, the first pin 061 is connected to the first PMOS transistor Q1 of input block 01 source electrode, the
Two pins 062 are connected with the 3rd pin 063, and the 4th pin 064, the 5th pin 065 and the 6th pin 066 are connected to the 6th
Nmos pass transistor Q6 drain electrode.6th nmos pass transistor Q6 grid is connected to the EN mouths of controller 011, and its source electrode is connected to
13 resistance R13 the first pole；13rd resistance R13 the second pole ground connection.8th resistance R8 the first pole is connected to the 6th
Nmos pass transistor Q6 source electrode, its second pole are connected to the 4th electric capacity C4 the first pole, are additionally coupled to the Iout of controller 011
Mouthful；4th electric capacity C4 the second pole ground connection.In one embodiment, power supply port can not also draw including the 5th pin 065 and the 6th
Pin 066.
In another embodiment of the invention, power supply unit 04 can also include the 4th resistance R4, the 5th NPN type three
Pole pipe Q5, certainly, it will be appreciated by those skilled in the art that these elements can also be not provided with, have no effect on charging device
Function.4th resistance R4 the first pole is connected to the 4th pin 064 of power supply port, and its second pole is connected to the pole of the 5th NPN type three
Pipe Q5 base stage；5th NPN type triode Q5 colelctor electrode is connected to the LOAD_DET mouths of controller 011, its grounded emitter.
Controller 011 uses single-chip microcomputer, and its CHG_EN mouth is connected to the first PMOS transistor Q1 grid, CHG_DET mouths
First resistor R1 the second pole and the 5th resistance R5 the first pole are connected to, LOAD_DET mouths pass through the 5th NPN type triode Q5
And the 4th resistance R4 be connected to the 4th pin 064 of USB port, PWM1 mouths can be directly connected to the second PMOS transistor Q2 grid
Pole, PWM2 mouths can be directly connected to the 3rd nmos pass transistor Q3 grid, and Vset mouths are connected to second resistance R2 the second pole
With the 3rd electric capacity C3 the first pole, Ichg mouths are connected to the tenth resistance R10 the first pole and the 5th electric capacity C5 the first pole, Iout
Mouth is connected to the 8th resistance R8 the second pole, and EN mouths are connected to the 6th nmos pass transistor Q6 grid.In more detailed circuit diagram
In, PWM1 mouths are connected to the 9th resistance R9 the first pole, and PWM2 mouths are connected to the 16th resistance R16 the first pole.
EN is used for controlling USB discharge paths, and when EN is high level, the 6th nmos pass transistor Q6 is opened, path Vin to USB
Complete discharge loop is formed, USB has output；When EN is low level, the 6th nmos pass transistor Q6 shut-offs, loop path is truncated,
USB is not exported.
In control unit 01, by the 8th PNP type triode Q8, the 4th NPN type triode Q4, the 9th NPN type triode Q9,
6th resistance R6, the 14th resistance R14, the 9th resistance R9 form totem driving circuit structure, and it is used for increasing PWM driving electricity
Stream, controller 011 is then responsible for determining whether that external power source accesses by detecting CHG_DET, so as to control CHG_EN by height
Level opens the first PMOS transistor Q1, then the cell voltage and electric current detected by Vset mouths and Ichg mouths to low level
And the outside output current that Iout mouths detect carrys out comprehensive adjustment PWM duty cycle, reach expected so as to control to adjust unit
Constant charge electric current.
The present embodiment charging device realizes that the current control process of the playing function when filling is as follows：When charging device fills into side
(the external power input Vin of charging device inserts adapter, and charging device needs rechargeable battery and put during the mode playback of side
Enter and charged to battery to be charged, and insert external equipment in the output USB port of charging device simultaneously), now charging device
The Iout mouths of controller 011 gather USB output current values Iout and charging current value Ichg respectively with Ichg mouths, and carry out inside
So as to obtain the input total current Iin (i.e. the input current of charging device) of adapter, calculation formula is Iin=Iout+ for calculation
Ichg/η；Wherein, η is conversion efficiency.Then control unit by detect Iout and Ichg can calculate adapter reality it is defeated
Enter total current, in the case where ensureing the peripheral hardware normal work that is connected of charging device, by the PWM1 mouths of controller 011 with
PWM2 mouths adjust the PWM duty cycle of the second PMOS transistor Q2 PWM duty cycle and the 3rd nmos pass transistor Q3, and then adjust
Total current Iin is constant to maintain to input by section charging current Ichg, thus realizes and is put when filling and point of the preferential peripheral hardware of electricity
Match somebody with somebody, and because output USB is directly powered by adapter, the secondary efficiency that boost conversion is carried out in the absence of battery loses, will not
There is battery more to fill less and generate heat the problem of serious.
Efficiency eta can be the constant that is obtained by actual test charging device, the determination side on efficiency eta
Method, it is for instance possible to use equation below, η=Pout/Pin=(Vbat*Ibat)/(Vin*Iin), wherein, Vbat is battery electricity
Pressure, Ibat are battery charge, and Vin is adapter output voltage, and Iin is the input total current of charging device, such as one
In secondary test, when cell voltage is 3.7V, Ibat=1A, Vin=5V, Iin=0.8A, η=(3.7*1)/(5* can be calculated
0.8)=92.5%.
In the present embodiment, the second PMOS transistor Q2 PWM duty cycle (PWM2 dutycycles) and the 3rd nmos pass transistor
Q3 PWM duty cycle (PWM3 dutycycles) is to be adjusted in synchronism, and becomes big together or diminishes.When PWM2 dutycycles and PWM3 are accounted for
When empty bigger than change, Ichg diminishes, and when PWM2 dutycycles and small PWM3 dutycycles change, Ichg becomes big.Thus, according to formula
Iin=Iout+Ichg/ η, when Iout is larger cause Iin be above standard numerical value when, then increase PWM2 dutycycles and PWM3 duties
Than so as to reduce Ichg, if necessary until Ichg is decreased to 0；When Iout is smaller causes Iin to be less than standard figures, then reduce
PWM2 dutycycles and PWM3 dutycycles are so as to increase Ichg, and so as to maintain, Iin's is constant so that Iin maintains regime values
Scope.Externally fed electric current Iout is generally by mobile phone or other equipment autonomous control.
The charging device of the present embodiment can detect output current Iout and charging current Ichg simultaneously, be drilled by certain
Calculation method calculates input total current Iin, maintains to input total electricity with PWM3 dutycycles to adjust Ichg by adjusting PWM2
It is constant to flow Iin, and then realizes and adapter is maximally utilized, smart allocation USB output currents Iout and battery charge
Ichg.Control unit carries out smart allocation, the preferential use for ensureing external equipment, unnecessary electricity to the electricity from adapter
Charged simultaneously for battery, maximumlly make use of adapter electricity.Charging device is not in the phenomenon that electricity the more fills the more few, is carried
High customer experience degree；And two times transfer is not present, directly powered by adapter, improve conversion efficiency, reduce system hair
Heat.
Embodiment two：
As shown in figure 4, the charging device of the present embodiment and the difference of embodiment one are control unit part, the present embodiment
Control unit include controller 011, it is brilliant that adjustment unit 02 includes the first electric capacity C1, the second PMOS transistor Q2, the 3rd NMOS
Body pipe Q3, the first inductance L1 and the second electric capacity C2.First electric capacity C1 the first pole connects with the second PMOS transistor Q2 source electrode
To the first PMOS transistor Q1 of input block 05 source electrode, power supply unit 04 is additionally coupled to；First electric capacity C1 the second pole connects
Ground；Second PMOS transistor Q2 drain electrode and the 3rd nmos pass transistor Q3 drain electrode are connected to the first inductance L1 the first pole；The
Two PMOS transistor Q2 grid is connected to the PWM1 mouths of controller 011, and the 3rd nmos pass transistor Q3 grid is connected to control
The PWM2 mouths of device 011；3rd nmos pass transistor Q3 source ground；First inductance L1 the second pole and the first of the second electric capacity C2
Pole is connected to the poles of second resistance R2 first of charhing unit 03；Second electric capacity C2 the second pole ground connection.
The other parts and power source path management method of the present embodiment charging device are consistent with embodiment one, therefore no longer superfluous
State.
Embodiment three：
As shown in figure 5, the charging device of the present embodiment and the difference of embodiment one are control unit and power supply unit portion
Point, the difference with embodiment two is its power supply unit part, the power supply unit of the present embodiment include the 4th PMOS transistor Q4,
Power supply port 06, the 13rd resistance R13, the 8th resistance R8, the 4th electric capacity C4.
Power supply port is used to connect with external equipment, and power supply port includes multiple pins, and one of pin is connected to the 4th
The drain electrode of PMOS transistor, another pin are connected to the 13rd resistance R13 the first pole and the 8th resistance R8 the first pole.
Power supply port is preferably by the USB port of any specification, for example, using USB port 06 as shown in Figure 3, it includes
One pin 061, second pin 062, the 3rd pin 063, the 4th pin 064, the 5th pin 065 and the 6th pin 066.Wherein,
First pin 061 is connected to the 4th PMOS transistor Q4 drain electrode, and second pin 062 is connected with the 3rd pin 063, and the 4th draws
Pin 064, the 5th pin 065 and the 6th pin 066 be connected to the 13rd resistance R13 the first pole and the 8th resistance R8 first
Pole.13rd resistance R13 the second pole ground connection；8th resistance R8 the second pole and the 4th electric capacity C4 the first pole are connected to control
The Iout mouths of device 011；4th electric capacity C4 the second pole ground connection；4th PMOS transistor Q4 grid is connected to controller 011
EN mouths, its source electrode are connected to the second PMOS transistor Q2 source electrode.It should be noted that in one embodiment, power supply port also may be used
Not include the 5th pin 065 and the 6th pin 066.
Other circuit structure parts of the present embodiment and power source path management method are identical with embodiment one, therefore no longer superfluous
State.
Use above specific case is illustrated to the present invention, is only intended to help and is understood the present invention, not limiting
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make some simple
Deduce, deform or replace.
Claims (9)
- A kind of 1. charging device, it is characterised in thatIncluding control unit, adjustment unit, charhing unit and power supply unit；Described control unit is connected to the adjustment unit, the charhing unit and said supply unit, and the adjustment unit connects It is connected to the charhing unit；The charhing unit is used to charge for battery；Said supply unit is used to power for external equipment；The adjustment unit includes the second MOS transistor and the 3rd MOS transistor；Described control unit is used to detect the output current of the charging current of battery and said supply unit in the charhing unit, Second MOS transistor and the are adjusted in the adjustment unit according to the value of the value of the charging current detected and output current The PWM duty cycle of three MOS transistors, to maintain to adjust the charging electricity in the case that the input total current of charging device is stable Stream.
- 2. charging device as claimed in claim 1, it is characterised in thatAlso include input block, the input block is connected to described control unit, the adjustment unit and power supply unit, is used for Input current is provided for the charging device；The input block includes first resistor (R1), the 5th resistance (R5), the 18th resistance (R18) and the first PMOS transistor (Q1)；The externally connected power supply Vin of drain electrode of first pole of the first resistor and first PMOS transistor；The source electrode of first PMOS transistor is connected to the adjustment unit, and its grid is connected to described control unit；Second pole of the first resistor and the first pole of the 5th resistance are connected to described control unit；The second pole ground connection of 5th resistance；First pole of the 18th resistance is connected to the source electrode of first PMOS transistor, and its second pole is connected to described The grid of one PMOS transistor.
- 3. charging device as claimed in claim 1 or 2, it is characterised in thatThe adjustment unit includes the first electric capacity (C1), the second PMOS transistor (Q2), the 3rd nmos pass transistor (Q3), the first electricity Feel (L1) and the second electric capacity (C2)；The source electrode of first pole of first electric capacity and second PMOS transistor, which is connected to, to be arranged in the charging device For providing the input block of input current for the charging device, said supply unit is additionally coupled to；The second pole ground connection of first electric capacity；The drain electrode of second PMOS transistor and the drain electrode of the 3rd nmos pass transistor are connected to the of first inductance One pole；The grid of the grid of second PMOS transistor and the 3rd nmos pass transistor is connected to described control unit；The source ground of 3rd nmos pass transistor；Second pole of first inductance and the first pole of second electric capacity are connected to the charhing unit；The second pole ground connection of second electric capacity.
- 4. charging device as claimed in claim 1 or 2, it is characterised in thatDescribed control unit includes controller (011), the 6th resistance (R6), the 4th NPN type triode (Q4), the 8th positive-negative-positive three Pole pipe (Q8), the 9th NPN type triode (Q9), the 9th resistance (R9), the 14th resistance (R14), the 12nd resistance (R12), Ten NPN type triodes (Q10), the 11st PNP type triode (Q11), the 12nd NPN type triode (Q12), the 16th resistance (R16), the 17th resistance (R17)；The colelctor electrode of first pole of the 6th resistance and the 4th NPN type triode is connected in the adjustment unit The source electrode of two PMOS transistors；It is single that the emitter stage of 4th NPN type triode and the emitter stage of the 8th PNP type triode are connected to the regulation The grid of the second PMOS transistor in member；The base stage of 4th NPN type triode and the base stage of the 8th PNP type triode are connected to the 6th resistance Second pole and the colelctor electrode of the 9th NPN type triode；The base stage of 9th NPN type triode be connected to the 9th resistance the second pole and the 14th resistance first Pole；The colelctor electrode of 8th PNP type triode, the emitter stage of the 9th NPN type triode and the 14th resistance Second pole is grounded；First pole of the 9th resistance is connected to the PWM1 mouths of the controller；First pole of the 12nd resistance and the colelctor electrode of the tenth NPN type triode are connected to operating voltage end VCC；The emitter stage of tenth NPN type triode and the emitter stage of the 11st PNP type triode are connected to the regulation The grid of the 3rd nmos pass transistor in unit；The base stage of tenth NPN type triode and the base stage of the 11st PNP type triode are connected to the 12nd electricity Second pole of resistance and the colelctor electrode of the 12nd NPN type triode；The base stage of 12nd NPN type triode is connected to the second pole of the 16th resistance and the 17th resistance First pole；The colelctor electrode of 11st PNP type triode, the emitter stage of the 12nd NPN type triode and the 17th electricity The second pole ground connection of resistance；First pole of the 16th resistance is connected to the PWM2 mouths of the controller.
- 5. charging device as claimed in claim 1 or 2, it is characterised in thatThe charhing unit includes second resistance (R2), 3rd resistor (R3), the 7th resistance (R7), the tenth resistance (R10), the tenth One resistance (R11), the 15th resistance (R15), the 3rd electric capacity (C3), the 5th electric capacity (C5) and the 7th nmos pass transistor (Q7)；First pole of the second resistance and the first pole of the 3rd resistor are connected to the adjustment unit, are additionally operable to be connected to Anode to be charged；Second pole of the second resistance and the first pole of the 3rd electric capacity are connected to described control unit；The second pole ground connection of 3rd electric capacity；First pole of the 7th resistance and the drain electrode of the 7th nmos pass transistor are used to be connected to GND to be charged；Second pole of the 7th resistance and the source electrode of the 7th nmos pass transistor are connected to the second pole of the tenth resistance, It is additionally coupled to the first pole of the 15th resistance；First pole of the tenth resistance and the first pole of the 5th electric capacity are connected to described control unit；The second pole ground connection of 5th electric capacity；The grid of second pole of the 3rd resistor and the 7th nmos pass transistor is connected to the first of the 11st resistance Pole；Second pole of the 11st resistance is connected to the first pole of the 15th resistance；The second pole ground connection of 15th resistance.
- 6. charging device as claimed in claim 1 or 2, it is characterised in thatSaid supply unit includes power supply port (06), the 6th nmos pass transistor (Q6), the 13rd resistance (R13), the 8th resistance And the 4th electric capacity (C4) (R8)；The power supply port is used to connect with external equipment, and the power supply port includes multiple pins, and one of pin, which is connected to, to be set It is placed in the charging device and is used for the input block that input current is provided for the charging device, another pin is connected to institute State the drain electrode of the 6th nmos pass transistor；The grid of 6th nmos pass transistor is connected to described control unit, and its source electrode is connected to the of the 13rd resistance One pole；The second pole ground connection of 13rd resistance；First pole of the 8th resistance is connected to the source electrode of the 6th nmos pass transistor, and its second pole is connected to the described 4th First pole of electric capacity, is additionally coupled to described control unit；The second pole ground connection of 4th electric capacity.
- 7. charging device as claimed in claim 6, it is characterised in thatThe power supply port includes the first pin, second pin, the 3rd pin, the 4th pin；Its first pin is connected to described defeated Enter unit, second pin is connected with the 3rd pin, and the 4th pin is connected to the drain electrode of the 6th nmos pass transistor；Said supply unit also includes the 4th resistance (R4), the 5th NPN type triode (Q5)；First pole of the 4th resistance is connected to the 4th pin of the power supply port, and its second pole is connected to the 5th NPN The base stage of type triode；The colelctor electrode of 5th NPN type triode is connected to described control unit, its grounded emitter.
- 8. charging device as claimed in claim 1 or 2, it is characterised in thatSaid supply unit includes the 4th PMOS transistor (Q4), power supply port (06), the 13rd resistance (R13), the 8th resistance (R8), the 4th electric capacity (C4)；The power supply port is used to connect with external equipment, and the power supply port includes multiple pins, and one of pin is connected to institute The drain electrode of the 4th PMOS transistor is stated, another pin is connected to the first pole of the 13rd resistance and the 8th resistance First pole；The second pole ground connection of 13rd resistance；Second pole of the 8th resistance and the first pole of the 4th electric capacity are connected to the Iout mouths of described control unit；The second pole ground connection of 4th electric capacity；The grid of 4th PMOS transistor is connected to the EN mouths of described control unit, and it is single that its source electrode is connected to the regulation Member.
- 9. charging device as claimed in claim 1 or 2, it is characterised in thatDescribed control unit is used to gather output current value Iout and charging current value Ichg, and the defeated of charging device is calculated Enter total current Iin；Calculation formula is Iin=Iout+Ichg/ η, wherein, η is conversion efficiency；And/or for by charging device Input total current preferentially ensure the use of external equipment, and charged simultaneously to battery to be charged using unnecessary electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828862.2U CN207218276U (en) | 2017-07-10 | 2017-07-10 | A kind of charging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720828862.2U CN207218276U (en) | 2017-07-10 | 2017-07-10 | A kind of charging device |
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| CN207218276U true CN207218276U (en) | 2018-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245188A (en) * | 2017-07-10 | 2019-01-18 | 深圳市爱克斯达电子有限公司 | A kind of charging unit and the discharge source path management method when filling |
| US20220302734A1 (en) * | 2020-08-31 | 2022-09-22 | Google Llc | Parallel charger circuit with battery feedback control |
-
2017
- 2017-07-10 CN CN201720828862.2U patent/CN207218276U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245188A (en) * | 2017-07-10 | 2019-01-18 | 深圳市爱克斯达电子有限公司 | A kind of charging unit and the discharge source path management method when filling |
| CN109245188B (en) * | 2017-07-10 | 2024-01-19 | 深圳市爱克斯达电子有限公司 | Charging device and charging and discharging source path management method |
| US20220302734A1 (en) * | 2020-08-31 | 2022-09-22 | Google Llc | Parallel charger circuit with battery feedback control |
| US11916478B2 (en) * | 2020-08-31 | 2024-02-27 | Google Llc | Parallel charger circuit with battery feedback control |
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