CN109756000A - A kind of switching charging circuit, charger, load terminal, system and charging method - Google Patents
A kind of switching charging circuit, charger, load terminal, system and charging method Download PDFInfo
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- CN109756000A CN109756000A CN201910089265.6A CN201910089265A CN109756000A CN 109756000 A CN109756000 A CN 109756000A CN 201910089265 A CN201910089265 A CN 201910089265A CN 109756000 A CN109756000 A CN 109756000A
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Abstract
The present invention discloses a kind of switching charging circuit, including first switch transistor, first output end of the first end connection charging circuit of first switch transistor, the second output terminal of the second end connection charging circuit of first switch transistor, the control terminal of first switch transistor receive switching voltage；Second switch transistor, the second end of the second end connection first switch transistor of second switch transistor, the control terminal of second switch transistor receive switching voltage, and the first end of second switch transistor connects the first ground terminal；Third switching transistor, the first end of the first end connection second switch transistor of third switching transistor, the second end of third switching transistor connect the second ground terminal, and the control terminal of third switching transistor receives switching voltage.Invention achieves the purposes to load terminal quick charge, to improve work efficiency.
Description
Technical field
The present invention relates to power technique fields, more particularly to a kind of switching charging circuit, charger, load terminal, are
System and charging method.
Background technique
With the development of power supply industry, the power supply speed requirement of load is increasing, and supply current also requires increasingly
Greatly.
Fig. 1 and Fig. 2 shows two kinds of power supply modes between load terminal and charger in the prior art, can be obtained, by Fig. 1
A kind of power supply mode is to be attached by the positive and negative electrode of DC power supply with load terminal to be formed into a loop, and second of power supply mode
It is then to be attached by the anode of DC power supply with load terminal, DC power supply and load terminal are then respectively provided with a ground terminal, from
And be formed into a loop, in both power supply modes, the electric current being input in load is all electric current of the power supply by anode output, that is,
It says, the electric current of positive pole output is much, and the electric current in corresponding circuit is also just much, therefore is unable to reach fast to load terminal
The purpose of speed charging, reduces working efficiency.
Summary of the invention
In order to solve the above technical problems, first aspect present invention proposes a kind of switching charging circuit, comprising:
First switch transistor, the first end of the first switch transistor connect the first output of the charging circuit
End, the second end of the first switch transistor connect the second output terminal of the charging circuit, the first switch transistor
Control terminal receive switching voltage；
Second switch transistor, the second end of the second switch transistor connect the second of the first switch transistor
End, the control terminal of the second switch transistor receive the switching voltage, the first end connection of the second switch transistor
First ground terminal；
Third switching transistor, the first end of the first end connection second switch transistor of the third switching transistor,
The second end of the third switching transistor connects the second ground terminal, cuts described in the control terminal reception of the third switching transistor
Change voltage.
Preferably, under the first charge mode, in response to the first state of the switching voltage, the first switch crystal
Pipe and the cut-off of third switching transistor, the second switch transistor turns, the first output end output supply voltage are described
Second output terminal ground connection；
Under the second charge mode, in response to the second state of the switching voltage, the first switch transistor and the
The conducting of three switching transistors, the second switch transistor cutoff, first output end and the second output terminal export
The supply voltage.
Preferably, first, second, and third switching transistor is respectively PMOS transistor, NMOS transistor and PMOS
Transistor, control terminal are grid, and first end is source electrode, and second end is drain electrode, and
The first state of the switching voltage is high level, and the second state is low level.
Second aspect of the present invention proposes a kind of charger, comprising:
First shell；And
The switching charging circuit being set in the first shell；
Wherein, second ground terminal is arranged on the first shell surface.
Third aspect present invention proposes a kind of switching charging circuit, comprising:
4th switching transistor, the first end of the 4th switching transistor connect the first input of the charging circuit
End, the second end of the 4th switching transistor connect the second input terminal of the charging circuit, the 4th switching transistor
Control terminal receive switching voltage；
The second end of 5th switching transistor, the 5th switching transistor connects the second of the 4th switching transistor
End, the control terminal of the 5th switching transistor receive the switching voltage, the first end connection of the 5th switching transistor
Third ground terminal；
6th switching transistor, the first end of the 6th switching transistor connect the first end of the 5th switching transistor,
The second end of 6th switching transistor connects the 4th ground terminal, cuts described in the control terminal reception of the 6th switching transistor
Change voltage.
Preferably, under the first charge mode, in response to the first state of the switching voltage, the 4th switch crystal
Pipe and the cut-off of the 6th switching transistor, the 5th switching transistor conducting, the first input end input supply voltage are described
Second input end grounding；
Under the second charge mode, in response to the second state of the switching voltage, the 4th switching transistor and the
The conducting of six switching transistors, the 5th switching transistor cut-off, the first input end and second input terminal input
The supply voltage.
Preferably, the four, the 5th and the 6th switching transistor is respectively PMOS transistor, NMOS transistor and PMOS
Transistor, control terminal are grid, and first end is source electrode, and second end is drain electrode, and
The first state of the switching voltage is high level, and the second state is low level.
Fourth aspect present invention proposes a kind of load terminal, including
Second shell；And
The switching charging circuit being set in the second shell；
Wherein, the four the first ground terminal is arranged on the second shell surface.
Fifth aspect present invention proposes a kind of charging system, comprising:
The charger；And
The load terminal；
Wherein, when the charger charges to the load terminal, the first output end connection first input
End, the second output terminal connects second input terminal, and second ground terminal is connect with the 4th ground terminal.
Sixth aspect present invention proposes a kind of method that charger charges to load terminal, comprising the following steps:
First output end is connected into the first input end, the second output terminal connects second input terminal,
And second ground terminal is connect with the 4th ground terminal；
In response to the first state of the switching voltage, charge under the first charge mode；
In response to the second state of the switching voltage, charge under the second charge mode.
Beneficial effects of the present invention are as follows:
The present invention has the advantages that definite principle, design are simple, and at work, first switch transistor and third switch are brilliant
Body pipe is in response to switching voltage turn-on, and second switch transistor is in response to switching voltage cut-off, at this moment, the first output end and the
The voltage that two output ends are exported is the supply voltage that power input is inputted, and load terminal then can be defeated by first
Outlet inputs double supply voltage with second output terminal, and this makes it possible to enable the load to obtain within the identical charging time
Double electric current is taken, has achieved the purpose that improve work efficiency load terminal quick charge.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows the schematic diagram of the first power supply mode between load and DC power supply in the prior art；
Fig. 2 shows the schematic diagrames of second of power supply mode in the prior art between load and DC power supply；
Fig. 3 shows a kind of schematic diagram for switching charging circuit that one embodiment of the invention proposes；
Fig. 4 shows a kind of structural block diagram of charger of second embodiment of the present invention proposition；
Fig. 5 shows a kind of structural block diagram for switching charging circuit that third embodiment of the invention proposes；
Fig. 6 shows a kind of structural block diagram for load terminal that the 4th embodiment of the invention proposes；
Fig. 7 shows a kind of structural block diagram for charging system that the 5th embodiment of the invention proposes；
Circuit diagram when the switching charging circuit of switching charging circuit and load terminal that Fig. 8 shows charger connects；
Fig. 9 show that the 5th embodiment of the invention propose it is a kind of using the charger to the load terminal
The flow chart of the method to charge.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
Fig. 3 shows a kind of schematic diagram for switching charging circuit that one embodiment of the invention proposes, as shown in figure 3,
The circuit includes: first switch transistor T1, second switch transistor T2 and third switching transistor T3.
In the specific example of Fig. 3, the first end of first switch transistor T1 is separately connected power input (in figure
The end VBUS) and charging circuit the first output end (U1 in figure), first switch transistor T1 second end connection charging electricity
The second output terminal (U2 in figure) on road, the control terminal of first switch transistor T1 receive switching voltage, it should be noted that figure
In 3, control terminal connection switching voltage end (end SW in figure) of first switch transistor T1, that is to say, that switching voltage is by cutting
It changes voltage end to be exported, and switches the electricity that voltage end is construed as the chip with processing function or data processing unit
Output end is pressed, such as: processor.
The second end of the second switch transistor T2 described in the specific example of Fig. 3 connects the first switch transistor T1
Second end, the control terminal of the second switch transistor T2 receives the switching voltage, the second switch transistor T2's
First end connects the first ground terminal (end GND1 in figure).
In the specific example of Fig. 3, the first end connection second switch transistor T2's of the third switching transistor T3
The second end of first end, the third switching transistor T3 connects the second ground terminal (end GND2 in figure), the third switch
The control terminal of transistor T3 receives the switching voltage.
Specifically, under the first charge mode, in response to the first state of the switching voltage, the first switch crystal
Pipe T1 and third switching transistor T3 cut-off, the second switch transistor T2 conducting, the first output end out-put supply electricity
Pressure, the second output terminal ground connection, it should be noted that since under the first charge mode, second output terminal is grounded with first
End connection, therefore, the voltage of second output terminal output are 0.
Under the second charge mode, in response to it is described switching voltage the second state, the first switch transistor T1 and
Third switching transistor T3 conducting, the second switch transistor T2 cut-off, first output end and the second output terminal
Export the supply voltage.
In the following, being further situated between in conjunction with specific practical application scene come the switching charging circuit described in the present embodiment
It continues, when switching charging circuit is formed into a loop, under the first charge mode, control signal switching voltage end switches voltage by output
To the control terminal of first switch transistor T1, second switch transistor T2 and third switching transistor T3, so that first opens
Transistor T1, third switching transistor T3 cut-off are closed, and second switch transistor T2 is connected, at this moment, the first of charging circuit is defeated
Outlet is connect with power input, and the second output terminal of charging circuit is connect with the first ground terminal, and load is then defeated by first
Outlet carrys out input supply voltage to carry out normal charge, and when needing to enter under the second charge mode, switching voltage end passes through
Export the control of different switching voltage to first switch transistor T1, second switch transistor T2 and third switching transistor T3
End processed, so that first switch transistor T1, third switching transistor T3 are connected, and second switch transistor T2 ends, at this moment,
The voltage that first output end and second output terminal are exported is the supply voltage that power input is inputted, and load terminal is then
Input double supply voltage by the first output end and second output terminal, this makes it possible to enable load terminal identical
Charging time in obtain double electric current, achieved the purpose that improve work efficiency load terminal quick charge, and
The present embodiment realizes double charge efficiency by using identical cabling mode, for traditional fast charge technology,
The trace width for not needing increase circuit, that is, can be improved charging rate, reduce production cost.
In an optional embodiment of the present embodiment, first, second, and third switching transistor is respectively
PMOS transistor, NMOS transistor and PMOS transistor, control terminal are grid, and first end is source electrode, and second end is drain electrode, and
And the first state of the switching voltage is high level, the second state is low level；Or
First, second, and third switching transistor is respectively NMOS transistor, PMOS transistor and NMOS transistor,
Its control terminal is grid, and first end is source electrode, and second end is drain electrode, and the first state of the switching voltage is low level,
Second state is high level.
Fig. 4 shows a kind of structural block diagram of charger of second embodiment of the present invention proposition, as shown in Figure 4, comprising:
First shell；And
The switching charging circuit being set in the first shell；
Wherein, second ground terminal is arranged on the first shell surface.
It should be noted that the type of charger can for phone charger, computer charger or automobile charging pile etc.,
The concrete type present invention is without limitation.
Second ground terminal can be the conductive layer that first shell surface is arranged in, and material can be selected as metal, due to
Conductive layer is connect with the second ground terminal, and in switching charging circuit, the second end connection second of third switching transistor T3 connects
Ground terminal, therefore, conductive layer are connect by the second ground terminal with the second end of third switching transistor T3.
Fig. 5 shows a kind of structural block diagram for switching charging circuit that third embodiment of the invention proposes, such as Fig. 5 institute
Show, the circuit includes: the 4th switching transistor T4, the 5th switching transistor T5 and the 6th switching transistor T6.
In the specific example of Fig. 5, the first input end (figure of the first end connection charging circuit of the 4th switching transistor T4
In U3), the second input terminal (U4 in figure) of the second end of the 4th switching transistor T4 connection charging circuit, the 4th switch is brilliant
The control terminal of body pipe T4 receives switching voltage, it should be noted that in Fig. 5, the control terminal connection of the 4th switching transistor T4 is cut
Change voltage end (end SW in figure), that is to say, that switching voltage is exported by switching voltage end, and switching voltage end can be by
It is interpreted as the voltage output end of the chip with processing function or data processing unit, such as: processor.
The second end of the 5th switching transistor T5 described in the specific example of Fig. 5 connects the 4th switching transistor T4
Second end, the control terminal of the 5th switching transistor T5 receives the switching voltage, the 5th switching transistor T5's
First end connects third ground terminal (end GND3 in figure).
In the specific example of Fig. 5, the first end of the 6th switching transistor T6 connects the 5th switching transistor T5's
The second end of first end, the 6th switching transistor T6 connects the 4th ground terminal (end GND4 in figure), the 6th switch
The control terminal of transistor T6 receives the switching voltage.
Specifically, under the first charge mode, in response to the first state of the switching voltage, the 4th switch crystal
Pipe T4 and the 6th switching transistor T6 cut-off, the 5th switching transistor T5 conducting, the first input end input power electricity
Pressure, second input end grounding；
Under the second charge mode, in response to it is described switching voltage the second state, the 4th switching transistor T4 and
6th switching transistor T6 conducting, the 5th switching transistor T5 cut-off, the first input end and second input terminal
Input the supply voltage.
In an optional embodiment of the present embodiment, the four, the 5th and the 6th switching transistor is respectively
PMOS transistor, NMOS transistor and PMOS transistor, control terminal are grid, and first end is source electrode, and second end is drain electrode, and
And the first state of the switching voltage is high level, the second state is low level；Or
Four, the 5th and the 6th switching transistor is respectively NMOS transistor, PMOS transistor and NMOS transistor,
Its control terminal is grid, and first end is source electrode, and second end is drain electrode, and the first state of the switching voltage is low level,
Second state is high level.
Fig. 6 shows a kind of structural block diagram for load terminal that the 4th embodiment of the invention proposes, as shown in fig. 6, packet
It includes:
Second shell；And
The switching charging circuit being set in the second shell；
Wherein, the 4th ground terminal is arranged on the second shell surface.
It should be noted that the type of load terminal can be mobile phone, computer or automobile etc., the concrete type present invention is not
It limits.
4th ground terminal can be the conductive layer that second shell surface is arranged in, and material can be selected as metal, due to
Conductive layer is connect with the 4th ground terminal, and in switching charging circuit, the second end connection the 4th of the 6th switching transistor T6 connects
Ground terminal, therefore, conductive layer are connect by the 4th ground terminal with the second end of the 6th switching transistor T3.
Fig. 7 shows a kind of structural block diagram for charging system that the 5th embodiment of the invention proposes, as shown in fig. 7, institute
The system of stating includes:
Above-mentioned charger；And
Above-mentioned load terminal；
Wherein, when the charger charges to the load terminal, the first output end connection first input
End, the second output terminal connects second input terminal, and second ground terminal is connect with the 4th ground terminal.
Circuit diagram when the switching charging circuit of switching charging circuit and load terminal that Fig. 8 shows charger connects, needs
To be illustrated, when the second ground terminal is connect with the 4th ground terminal, the switching of the switching charging circuit and load terminal of charger
Charging circuit forming circuit, under the first charge mode, the first output end output supply voltage to first input end, the second output
It holds output no-voltage to the second input terminal, to realize common charging, and works as under the second charge mode, the first output end output electricity
Source voltage is to first input end, second output terminal output supply voltage to second output terminal, to realize fast charge mode.
Fig. 9 show that the 5th embodiment of the invention propose it is a kind of using the charger to the load terminal
The flow chart of the method to charge, as shown in Figure 9, comprising the following steps:
First output end is connected into the first input end, the second output terminal connects second input terminal,
And second ground terminal is connect with the 4th ground terminal；
In response to the first state of the switching voltage, charge under the first charge mode；
In response to the second state of the switching voltage, charge under the second charge mode.
That is, when needing charger to carry out quick charge to load terminal, by by the 4th on load terminal
Ground terminal is attached with the second ground terminal on charger so that switching charging circuit forming circuit, at this moment, pass through by
After load terminal and charger are attached, switching charging circuit can come in response to switching voltage so that charger is to load terminal
It charges, reaches different charge rates by switching different charge modes, improve work efficiency, and user exists
In use, touching power supply only will not generate current loop, i.e., there will not be injury to human body, in many application scenarios
Very big protective effect can be played.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of switching charging circuit characterized by comprising
The first end of first switch transistor, the first switch transistor connects the first output end of the charging circuit, institute
The second end for stating first switch transistor connects the second output terminal of the charging circuit, the control of the first switch transistor
End receives switching voltage；
Second switch transistor, the second end of the second switch transistor connect the second end of the first switch transistor,
The control terminal of the second switch transistor receives the switching voltage, the first end connection first of the second switch transistor
Ground terminal；
Third switching transistor, the first end of the first end connection second switch transistor of the third switching transistor are described
The second end of third switching transistor connects the second ground terminal, and the control terminal of the third switching transistor receives the switching electricity
Pressure.
2. switching charging circuit according to claim 1, which is characterized in that
Under the first charge mode, in response to the first state of the switching voltage, the first switch transistor and third are opened
Close transistor cutoff, the second switch transistor turns, the first output end output supply voltage, the second output terminal
Ground connection；
Under the second charge mode, in response to the second state of the switching voltage, the first switch transistor and third are opened
Described in pass transistor turns, the second switch transistor cutoff, first output end and the second output terminal export
Supply voltage.
3. circuit according to claim 1, which is characterized in that first, second, and third switching transistor is respectively
PMOS transistor, NMOS transistor and PMOS transistor, control terminal are grid, and first end is source electrode, and second end is drain electrode, and
And
The first state of the switching voltage is high level, and the second state is low level.
4. a kind of charger characterized by comprising
First shell；And
The switching charging circuit as claimed in any one of claims 1-3 being set in the first shell；
Wherein, second ground terminal is arranged on the first shell surface.
5. a kind of switching charging circuit characterized by comprising
The first end of 4th switching transistor, the 4th switching transistor connects the first input end of the charging circuit, institute
The second end for stating the 4th switching transistor connects the second input terminal of the charging circuit, the control of the 4th switching transistor
End receives switching voltage；
The second end of 5th switching transistor, the 5th switching transistor connects the second end of the 4th switching transistor,
The control terminal of 5th switching transistor receives the switching voltage, and the first end of the 5th switching transistor connects third
Ground terminal；
6th switching transistor, the first end of the 6th switching transistor connects the first end of the 5th switching transistor, described
The second end of 6th switching transistor connects the 4th ground terminal, and the control terminal of the 6th switching transistor receives the switching electricity
Pressure.
6. switching charging circuit according to claim 5, which is characterized in that
Under the first charge mode, in response to the first state of the switching voltage, the 4th switching transistor and the 6th is opened
Close transistor cutoff, the 5th switching transistor conducting, the first input end input supply voltage, second input terminal
Ground connection；
Under the second charge mode, in response to the second state of the switching voltage, the 4th switching transistor and the 6th is opened
Described in pass transistor turns, the 5th switching transistor cut-off, the first input end and second input terminal input
Supply voltage.
7. switching charging circuit according to claim 5, which is characterized in that the four, the 5th and the 6th switch crystal
Pipe is respectively PMOS transistor, NMOS transistor and PMOS transistor, and control terminal is grid, and first end is source electrode, second end
To drain, and
The first state of the switching voltage is high level, and the second state is low level.
8. a kind of load terminal, which is characterized in that including
Second shell；And
The switching charging circuit as described in any one of claim 5-7 being set in the second shell；
Wherein, the 4th ground terminal is arranged on the second shell surface.
9. a kind of charging system characterized by comprising
Charger as claimed in claim 4；And
Load terminal as claimed in claim 8；
Wherein, when the charger charges to the load terminal, first output end connects the first input end, institute
It states second output terminal and connects second input terminal, and second ground terminal is connect with the 4th ground terminal.
10. a kind of side charged using charger as claimed in claim 4 to load terminal as claimed in claim 8
Method, which comprises the following steps:
First output end is connected into the first input end, the second output terminal connects second input terminal, and
Second ground terminal is connect with the 4th ground terminal；
In response to the first state of the switching voltage, charge under the first charge mode；
In response to the second state of the switching voltage, charge under the second charge mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089265.6A CN109756000B (en) | 2019-01-30 | 2019-01-30 | Switching charging circuit, charger, load terminal, system and charging method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910089265.6A CN109756000B (en) | 2019-01-30 | 2019-01-30 | Switching charging circuit, charger, load terminal, system and charging method |
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| CN109756000A true CN109756000A (en) | 2019-05-14 |
| CN109756000B CN109756000B (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910089265.6A Active CN109756000B (en) | 2019-01-30 | 2019-01-30 | Switching charging circuit, charger, load terminal, system and charging method |
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| Country | Link |
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| CN110323830A (en) * | 2019-07-19 | 2019-10-11 | 珠海格力电器股份有限公司 | power supply switching method |
| CN111497683A (en) * | 2020-04-26 | 2020-08-07 | 东风汽车集团有限公司 | High-voltage quick charging system capable of achieving double battery pack voltage and using method thereof |
| CN111884323A (en) * | 2020-07-31 | 2020-11-03 | 上海裕芯电子科技有限公司 | Low-power consumption solar light-operated boost circuit |
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| CN108539830A (en) * | 2018-06-20 | 2018-09-14 | 深圳英集芯科技有限公司 | A kind of charging control switching circuit and control method |
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| CN102738819A (en) * | 2012-06-06 | 2012-10-17 | 中国电力科学研究院 | Power transmission system for improving transmission capability of alternating-current circuit through using mixed current converting technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111497683A (en) * | 2020-04-26 | 2020-08-07 | 东风汽车集团有限公司 | High-voltage quick charging system capable of achieving double battery pack voltage and using method thereof |
| CN111884323A (en) * | 2020-07-31 | 2020-11-03 | 上海裕芯电子科技有限公司 | Low-power consumption solar light-operated boost circuit |
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| Publication number | Publication date |
|---|---|
| CN109756000B (en) | 2021-03-12 |
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