CN110365083A - A kind of charging circuit and terminal - Google Patents
A kind of charging circuit and terminal Download PDFInfo
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- CN110365083A CN110365083A CN201910717551.2A CN201910717551A CN110365083A CN 110365083 A CN110365083 A CN 110365083A CN 201910717551 A CN201910717551 A CN 201910717551A CN 110365083 A CN110365083 A CN 110365083A
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- 239000003990 capacitor Substances 0.000 claims description 43
- 230000005669 field effect Effects 0.000 claims description 39
- 230000005611 electricity Effects 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- 238000004146 energy storage Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- H02J7/0077—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
Abstract
The embodiment of the invention provides a kind of charging circuit and terminals.The charging circuit includes: charging port；Voltage-regulating circuit, the input terminal of the voltage-regulating circuit are electrically connected with the first end of the charging port；The input terminal of multiplication of voltage output unit, the multiplication of voltage output unit is electrically connected with the output end of the voltage-regulating circuit；Battery pack, the battery pack are electrically connected with the output end of the multiplication of voltage output unit；The control terminal of control unit, the control terminal of the voltage-regulating circuit and the multiplication of voltage output unit is electrically connected with the control unit.In inventive embodiments, charging voltage is adjusted using two-stage means of voltage regulation, this two-stage means of voltage regulation is more efficient compared to traditional level-one DC-DC voltage boosting charging scheme, and two-stage voltage-regulating circuit be lost compared with voltage order one adjustment circuit it is also smaller.
Description
Technical field
The present embodiments relate to terminal charge technical field more particularly to a kind of charging circuit and terminals.
Background technique
With extensive use of the rapid nitriding on intelligent terminal (such as mobile phone, tablet computer), double battery core series connection
The mode of charging has biggish advantage on temperature rise control, charging rate.In order to give double battery cores concatenated system charging, in addition to
The high straightening of a default is needed to fill except chip, it is also necessary to additionally be further added by a boost charge chip boost charger
IC is with the other normal charge schemes of compatibility.Traditional boost charge chip is using DC-DC voltage boosting DC-DC boost frame
Structure controls the boosting that output voltage is realized in the charge and discharge on inductance by metal-oxide-semiconductor, since DC-DC voltage boosting framework efficiency is damaged
Consumption is also relatively fixed, to further raising efficiency, must will affect the area of cost and chip itself.But with mobile intelligence
Energy terminal charge electric current is continuously increased, and battery capacity is constantly promoted, and is proposed more to the promotion of boost charge chip efficiency itself
High requirement.
Summary of the invention
The embodiment of the invention provides a kind of charging circuit and terminals, to solve boost charge chip damage in the prior art
The problem of consumption is big, low efficiency.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
In a first aspect, providing a kind of charging circuit, it is applied to electronic equipment, comprising:
Charging port；
Voltage-regulating circuit, the input terminal of the voltage-regulating circuit are electrically connected with the first end of the charging port；
The output end of multiplication of voltage output unit, the input terminal and the voltage-regulating circuit of the multiplication of voltage output unit is electrically connected
It connects；
Battery pack, the battery pack are electrically connected with the output end of the multiplication of voltage output unit；
The control terminal of control unit, the control terminal of the voltage-regulating circuit and the multiplication of voltage output unit with the control
Unit electrical connection processed.
Second aspect provides a kind of terminal, including charging circuit as described above.
In the embodiment of the present invention, charging voltage is adjusted using two-stage means of voltage regulation, this two step voltages tune
Perfect square formula is more efficient compared to traditional level-one DC-DC voltage boosting charging scheme, and two-stage voltage-regulating circuit and level-one
Voltage-regulating circuit is also smaller compared to being lost.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without any creative labor, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 shows one of structural schematic diagrams of charging circuit provided in an embodiment of the present invention；
Fig. 2 indicates the second structural representation of charging circuit provided in an embodiment of the present invention；
Fig. 3 indicates one of the structural schematic diagram of charge pump provided in an embodiment of the present invention；
Fig. 4 indicates the second structural representation of charge pump provided in an embodiment of the present invention；
Fig. 5 indicates the third structural representation of charging circuit provided in an embodiment of the present invention；
Fig. 6 indicates the four of the structural schematic diagram of charging circuit provided in an embodiment of the present invention.
Specific embodiment
The exemplary embodiment that the present invention will be described in more detail below with reference to accompanying drawings.Although showing the present invention in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention without should be by embodiments set forth here
It is limited.It is to be able to thoroughly understand the present invention on the contrary, providing these embodiments, and can be by the scope of the present invention
It is fully disclosed to those skilled in the art.
One aspect according to an embodiment of the present invention provides a kind of charging circuit, is applied to electronic equipment.
As depicted in figs. 1 and 2, which includes: charging port 101, multiplication of voltage output unit 103, voltage adjustment electricity
Road 102, battery pack 104 and control unit 105.
Insertion of the charging port 101 for the charging plug on charging data line, the first end and voltage of charging port 101
The output end of adjustment circuit 102 is electrically connected, the second end ground connection of charging port 101.The output end of voltage-regulating circuit 102 with times
Press the input terminal electrical connection of output unit 103.The output end of multiplication of voltage output unit 103 is electrically connected with the anode of battery pack 104, electricity
The cathode of pond group 104 is grounded.The control terminal of voltage-regulating circuit 102 and the control terminal of multiplication of voltage output unit 103 pass through I2C
(Inter-Integrated Circuit) interface is electrically connected with control unit 105.Control unit 105 and voltage-regulating circuit
102 and multiplication of voltage output unit 103 communicated and controlled, realize the control to entire charging output.
Wherein, charging current flows to voltage-regulating circuit 102 by charging port 101, and control unit 105 controls voltage tune
Whole circuit 102 adjusts the voltage of charging current to preset voltage value, since the output end voltage of multiplication of voltage output unit 103 is defeated
Enter to hold the integral multiple of voltage, therefore control unit 105 can control the integral multiple of the output preset voltage value of multiplication of voltage output unit 103
Output voltage.Wherein, the voltage value of the input voltage of multiplication of voltage output unit 103 is the preset voltage value, the multiplication of voltage output unit
The voltage value of 103 output voltage is that battery pack 104 charges required voltage value.
Optionally, control unit 105 described here can be a control chip, such as CPU.
Charging circuit provided in an embodiment of the present invention is adjusted charging voltage using two-stage means of voltage regulation, i.e.,
It first passes through voltage-regulating circuit 102 and charging voltage is adjusted to preset voltage value, obtain VOUT_1, realize the first order tune of voltage
It is whole, then again by multiplication of voltage output unit 103 by charging voltage since preset voltage value is adjusted to the integral multiple of preset voltage value,
Voltage needed for obtaining battery pack 104, i.e. VOUT_2, realize the second level adjustment of voltage.For first order voltage-regulating circuit, by
It is more nearly its input voltage in the output voltage of first order voltage-regulating circuit, the efficiency of voltage-regulating circuit is mentioned
95% or more is risen to, and first order voltage-regulating circuit, transfer efficiency can reach 98%, therefore whole working efficiency can
To reach 93% (95%*98%) or more, and the whole efficiency of traditional level-one DC-DC voltage boosting framework can reach
88% or so, it is clear that this two-stage means of voltage regulation in the embodiment of the present invention is compared to traditional level-one DC-DC liter
Press charging scheme it is more efficient, and two-stage voltage-regulating circuit be lost compared with voltage order one adjustment circuit it is also smaller.In addition, by
In increasing level-one multiplication of voltage output unit 103, the compatibility of entire charging circuit is also improved.
Further, since voltage-regulating circuit 102 is set to before multiplication of voltage output unit 103, the voltage born
Lower, therefore, it is lower that the component in voltage-regulating circuit 102 can choose resistance to pressure, can reduce cost, and this in this way
Sample can also make the corresponding power stage design of voltage-regulating circuit 102 simpler, shorten the design cycle.In addition, first passing through electricity
Pressure adjustment circuit 102 is adjusted charging voltage, charging voltage can be adjusted to free voltage required for rear end, then lead to
It crosses multiplication of voltage output unit 103 and exports integral multiple voltage, so that charge function may be implemented under any voltage conditions, charge simultaneous
Capacitive has obtained the solution of essence, and charging function may be implemented in the voltage inputted in any voltage range being identified in user
Energy.
Optionally, in the embodiment of the present invention, which includes at least two batteries being connected in series, such as Fig. 1 and figure
Battery E1 and battery E2 in 2.
Optionally, as depicted in figs. 1 and 2, in the embodiment of the present invention, the charging circuit further include: first capacitor C1.This
The first end of one capacitor C1 is electrically connected with the anode of the output end of multiplication of voltage output unit 103 and battery pack 104 respectively, first electricity
Hold the second end ground connection of C1.The effect of first capacitor C1 predominantly filters and energy storage.
Optionally, in the embodiment of the present invention, which can be charge pump (charge pump).Charge
Pump is a kind of DC-to-dc converter, is energy-storage travelling wave tube using capacitor, can produce the output voltage bigger than input voltage.
The electrical efficiency of charge pump circuit is very high, and circuit is also comparable simple.
Optionally, in the embodiment of the present invention, the boosting multiple of multiplication of voltage output unit 103 can be selected as needed.Such as
Shown in Fig. 1 and Fig. 2, can the voltage according to needed for the voltage of A point and C point, adjust B point voltage value.Wherein, A, B, C point
Voltage is denoted as V respectivelyA、VB(i.e. VOUT_1)、VC(i.e. VOUT_2), then B point voltage adjustment can be adjusted according to following demand:
If 1, needing 1VA≤VC< 2VA, then multiplication of voltage output unit 103 is exported by the way of a multiplication of voltage.
If 2, needing 2VA≤VC< 3VA, then multiplication of voltage output unit 103 is exported by the way of two multiplication of voltages.
If 3, needing 3VA≤VC< 4VA, then multiplication of voltage output unit 103 is exported by the way of three multiplication of voltages.
If 4, needing 4VA≤VC< 5VA, then multiplication of voltage output unit 103 is exported by the way of four multiplication of voltages.
……
With this.Specific adjustment mode can realize by software, and can according to the characteristic of load end,
The characteristic dynamic of input voltage adjusts.
It is illustrated by taking the boost process of boosting charge pump as an example below.
As shown in Figure 3 and Figure 4, which includes: capacitor CIN, capacitor CFLY, capacitor COUTAnd switch S1, S2, S3,
S4。
Capacitor CINFirst end be respectively connected to the first of the input terminal of charge pump, the first end of switch S1 and switch S2
End, capacitor CINSecond end ground connection.Capacitor CFLYFirst end be connected to the second end of switch S1, capacitor CFLYSecond end connection
To the first end of switch S4.Capacitor COUTFirst end be respectively connected to the second end of switch S3 and the output end of charge pump, electricity
Hold COUTSecond end ground connection.The second end of switch S2 is connect with the first end of switch S4, the second end ground connection of switch S4.Switch
The second end of S1 is connect with the first end of switch S3.
The process that the charge pump carries out twice of boosting includes two stages, is respectively as follows:
First stage is as shown in Figure 3: S1 and S4 closure, S2 and S3 are opened, and electric current flows through S1 and S4 at this time, and to fast electric
Container CFLYCharging, until CFLYThe voltage at both ends is equal to VIN, i.e. VIN=VCFLY。
Second stage is as shown in Figure 4: S1 and S4 is opened, S2 and S3 closure, flying capacitor CFLYCathode be connected to VIN,
Input voltage V at this timeINWith CFLYSeries connection is to COUTCharging, so in COUTThe output voltage V at endOUTAs twice of input voltage,
That is VOUT=VIN+VCFLY=2VIN。
Optionally, in the embodiment of the present invention, which is reduction voltage circuit and booster circuit, passes through decompression
Circuit decompression is boosted by booster circuit, so that the voltage of the output of multiplication of voltage output unit 103 below is needed for battery pack 104
Voltage.
As shown in Figure 1, voltage-regulating circuit 102 is reduction voltage circuit, which includes: the second capacitor C2, third electricity
Hold C3, the first field-effect tube Q1, the second field-effect tube Q2, the first inductance L1 and switch control unit 1021.
Wherein, the first end of the second capacitor C2 source with the first end of charging port 101 and the first field-effect tube Q1 respectively
Pole electrical connection, the second end ground connection of the second capacitor C2.The drain electrode leakage with the second field-effect tube Q2 respectively of first field-effect tube Q1
The electrical connection of the first end of pole and the first inductance L1, the source electrode ground connection of the second field-effect tube Q2.The second end of first inductance L1 is distinguished
It is electrically connected with the first end of the input terminal of multiplication of voltage output unit 103 and third capacitor C3, the second end ground connection of third capacitor C3.The
The grid of the grid of one field-effect tube Q1 and the second field-effect tube Q2 are electrically connected with switch control unit 1021, switch control list
Member 1021 is also electrically connected with control unit 105.
Wherein, the second capacitor C2 is mainly used for energy storage, and third capacitor C3 is mainly used for filtering, and switch control unit 1021 is main
It is used for pulse width modulation (Pulse width modulation, abbreviation PWM) control, the acquisition of voltage and current, and is led to
Charge and discharge of the disconnection of control the first field-effect tube Q1 and the second field-effect tube Q2 with closure realization to the first inductance L1 are crossed, with reality
Now the required voltage value that charges of battery pack 104 is controlled.
As shown in Fig. 2, voltage-regulating circuit 102 is booster circuit, which includes: the 4th capacitor C4, the 5th electricity
Hold C5, the second inductance L2, third field-effect tube Q3, the 4th field-effect tube Q4 and switch control unit 1021.
Wherein, the first end of the 4th capacitor C4 first end with the first end of charging port 101 and the second inductance L2 respectively
Electrical connection, the second end ground connection of the 4th capacitor C4.The second end of second inductance L2 respectively with the source electrode of third field-effect tube Q3 and
The drain electrode of 4th field-effect tube Q4 is electrically connected.The first end and multiplication of voltage with the 5th capacitor C5 respectively that drain of third field-effect tube Q3
The input terminal of output unit 103 is electrically connected, the second end ground connection of the 5th capacitor C5, the source electrode ground connection of the 4th field-effect tube Q4, the
The grid of three field-effect tube Q3 and the grid of the 4th field-effect tube Q4 are electrically connected with switch control unit 1021, switch control list
Member 1021 is also electrically connected with control unit 105.
Wherein, the 4th capacitor C4 is mainly used for energy storage, and the 5th capacitor C5 is mainly used for filtering, and switch control unit 1021 is main
It is used for the acquisition of pulse width modulation control, voltage and current, and passes through control third field-effect tube Q3 and the 4th field-effect
The disconnection of pipe Q4 realizes charge and discharge to the second inductance L2 with closure, with realize to battery pack 104 charge required voltage value into
Row control.
Optionally, in the embodiment of the present invention, multiplication of voltage output unit 103 can be designed and be directly electrically connected with control unit 105,
As depicted in figs. 1 and 2；Multiplication of voltage output unit 103 can also be designed to be electrically connected by 102 control unit 105 of voltage-regulating circuit,
I.e. multiplication of voltage output unit 103 is electrically connected with voltage-regulating circuit 102, then by 105 electricity of voltage-regulating circuit 102 and control unit
Connection, as shown in Figure 3 and Figure 4, can integrate multiplication of voltage output unit 103, voltage-regulating circuit 102 in this way, form
One new charging chip realizes that function is integrated, and cost is more excellent, furthermore can also reduce the area of circuit occupancy, section in this way
Save space.
Optionally, which can be electrically connected with the switch control unit 1021 in voltage-regulating circuit 102
It connects.At this point, the switch control unit 1021 is not only integrated with the control function of the field-effect tube in voltage-regulating circuit 102, also
It is integrated with the control function to multiplication of voltage output unit 103.
Charging circuit provided in an embodiment of the present invention is adjusted charging voltage using two-stage means of voltage regulation, i.e.,
It first passes through voltage-regulating circuit 102 and charging voltage is adjusted to preset voltage value, obtain VOUT_1, realize the first order tune of voltage
It is whole, then again by multiplication of voltage output unit 103 by charging voltage since preset voltage value is adjusted to the integral multiple of preset voltage value,
Voltage needed for obtaining battery pack 104, i.e. VOUT_2, realize the second level adjustment of voltage.This two-stage in the embodiment of the present invention
Means of voltage regulation is more efficient compared to traditional level-one DC-DC voltage boosting charging scheme, and two-stage voltage-regulating circuit
It is lost compared with voltage order one adjustment circuit also smaller.In addition, due to increasing level-one multiplication of voltage output unit 103, it is entire to charge
The compatibility of circuit is also improved.
Other side according to an embodiment of the present invention provides a kind of terminal.The terminal includes charging as described above
Circuit.
The embodiment of the present invention provides the charging circuit in terminal, is adjusted using two-stage means of voltage regulation to charging voltage
It is whole, that is, it first passes through voltage-regulating circuit 102 and charging voltage is adjusted to preset voltage value, obtain VOUT_1, realize the first of voltage
Grade adjustment, then again by multiplication of voltage output unit 103 by charging voltage since preset voltage value is adjusted to the whole of preset voltage value
Several times, voltage needed for obtaining battery pack 104, i.e. VOUT_2, realize the second level adjustment of voltage.It is this in the embodiment of the present invention
Two-stage means of voltage regulation is more efficient compared to traditional level-one DC-DC voltage boosting charging scheme, and two step voltages adjust
Circuit is lost also smaller compared with voltage order one adjustment circuit.In addition, due to increasing level-one multiplication of voltage output unit 103, entirely
The compatibility of charging circuit is also improved.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instructions such as " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is at least two, such as two
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate with each other；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the interaction relationship of connection or two elements inside two elements.For the ordinary skill in the art,
The specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come
It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist
In protection scope of the present invention.
Claims (11)
1. a kind of charging circuit is applied to electronic equipment characterized by comprising
Charging port (101)；
Voltage-regulating circuit (102), the first of the input terminal of the voltage-regulating circuit (102) and the charging port (101)
End electrical connection；
Multiplication of voltage output unit (103), input terminal and the voltage-regulating circuit (102) of the multiplication of voltage output unit (103)
Output end electrical connection；
Battery pack (104), the battery pack (104) are electrically connected with the output end of the multiplication of voltage output unit (103)；
Control unit (105), the control terminal of the voltage-regulating circuit (102) and the control of the multiplication of voltage output unit (103)
End is electrically connected with described control unit (105).
2. charging circuit according to claim 1, which is characterized in that described control unit (105) controls the voltage tune
Whole circuit (102) adjusts the voltage of charging current to preset voltage value, and controls multiplication of voltage output unit (103) output institute
The output voltage of the integral multiple of preset voltage value is stated, the voltage value of the input terminal voltage of the multiplication of voltage output unit (103) is institute
State preset voltage value.
3. charging circuit according to claim 1, which is characterized in that further include: first capacitor (C1), the first capacitor
(C1) first end is electrically connected with the anode of the output end of the multiplication of voltage output unit (103) and the battery pack (104) respectively,
The second end of the first capacitor (C1) is grounded.
4. charging circuit according to any one of claims 1 to 3, which is characterized in that the voltage-regulating circuit (102) is
Reduction voltage circuit, the reduction voltage circuit include:
The first end of second capacitor (C2), second capacitor (C2) is electrically connected with the first end of the charging port (101), institute
State the second end ground connection of the second capacitor (C2)；
First field-effect tube (Q1) and the second field-effect tube (Q2), the source electrode of first field-effect tube (Q1) and second electricity
Hold the first end electrical connection of (C2), the drain electrode of first field-effect tube (Q1) and the drain electrode of second field-effect tube (Q2) electricity
Connection, the source electrode ground connection of second field-effect tube (Q2)；
First inductance (L1), the first end of first inductance (L1) are electrically connected with the drain electrode of first field-effect tube (Q1),
The second end of first inductance (L1) is electrically connected with the input terminal of the multiplication of voltage output unit (103)；
The first end of third capacitor (C3), the third capacitor (C3) is electrically connected with the second end of the first inductance (L1), and described
The second end of three capacitors (C3) is grounded；
Switch control unit (1021), the grid of first field-effect tube (Q1) and the grid of second field-effect tube (Q2)
Be electrically connected with the switch control unit (1021), the switch control unit (1021) also with described control unit (105)
Electrical connection.
5. charging circuit according to any one of claims 1 to 3, which is characterized in that the voltage-regulating circuit (102) is
Booster circuit, the booster circuit include:
The first end of 4th capacitor (C4), the 4th capacitor (C4) is electrically connected with the first end of the charging port (101), institute
State the second end ground connection of the 4th capacitor (C4)；
The first end of second inductance (L2), second inductance (L2) is electrically connected with the first end of the 4th capacitor (C4)；
Third field-effect tube (Q3) and the 4th field-effect tube (Q4), the source electrode of the third field-effect tube (Q3) and second electricity
Feel the second end electrical connection of (L2), the input of the drain electrode of the third field-effect tube (Q3) and the multiplication of voltage output unit (103)
End electrical connection, the drain electrode of the 4th field-effect tube (Q4) are electrically connected with the second end of second inductance (L2), and the described 4th
The source electrode of field-effect tube (Q4) is grounded；
5th capacitor (C5), the first end of the 5th capacitor (C5) are electrically connected with the drain electrode of the third field-effect tube (Q3),
The second end of 5th capacitor (C5) is grounded；
Switch control unit (1021), the grid of the third field-effect tube (Q3) and the grid of the 4th field-effect tube (Q4)
Be electrically connected with the switch control unit (1021), the switch control unit (1021) also with described control unit (105)
Electrical connection.
6. charging circuit according to claim 1, which is characterized in that the multiplication of voltage output unit (103) and the control
Unit (105) is directly electrically connected.
7. charging circuit according to claim 1, which is characterized in that the multiplication of voltage output unit (103) passes through the electricity
Pressure adjustment circuit (102) is electrically connected with described control unit (105).
8. charging circuit according to claim 1, which is characterized in that the multiplication of voltage output unit (103) is charge pump.
9. charging circuit according to claim 1, which is characterized in that the battery pack (104) includes at least two series connection
The battery of connection.
10. charging circuit according to claim 1, which is characterized in that the charging port (101) further includes second end,
The second end of the charging port (101) is grounded.
11. a kind of electronic equipment characterized by comprising charging circuit as described in any one of claim 1 to 10.
Priority Applications (1)
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| CN201910717551.2A CN110365083A (en) | 2019-08-05 | 2019-08-05 | A kind of charging circuit and terminal |
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| CN201910717551.2A CN110365083A (en) | 2019-08-05 | 2019-08-05 | A kind of charging circuit and terminal |
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| CN109510261A (en) * | 2018-11-21 | 2019-03-22 | 深圳市道通智能航空技术有限公司 | A kind of charging circuit and charging system |
| US20190148795A1 (en) * | 2017-11-10 | 2019-05-16 | Qualcomm Incorporated | Circuitry for charging a multi-stack battery pack |
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| WO2010130588A2 (en) * | 2009-05-11 | 2010-11-18 | Austriamicrosystems Ag | Voltage converter and method for converting voltage |
| CN103023308A (en) * | 2011-09-26 | 2013-04-03 | 立锜科技股份有限公司 | Power supply circuit and power supply circuit with adaptive enabling charge pump |
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| CN108964457A (en) * | 2017-05-19 | 2018-12-07 | 恩智浦有限公司 | The embodiment of high-efficiency battery charger for electronic device |
| US20190148795A1 (en) * | 2017-11-10 | 2019-05-16 | Qualcomm Incorporated | Circuitry for charging a multi-stack battery pack |
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