CN104333113B - A kind of power circuit - Google Patents
A kind of power circuit Download PDFInfo
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- CN104333113B CN104333113B CN201410606211.XA CN201410606211A CN104333113B CN 104333113 B CN104333113 B CN 104333113B CN 201410606211 A CN201410606211 A CN 201410606211A CN 104333113 B CN104333113 B CN 104333113B
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Abstract
The present invention relates to a kind of power circuit, including the first power subsystem, second source unit, switch element, control unit, the first power subsystem connects second source unit by switch element；Control unit controls connecting valve unit, for controlling second source unit to be connected in the state of setting or disconnecting the first power subsystem.The present invention provides two accessory power supplys, the first power subsystem：To being required for the circuit of electric energy to power in any case, second source unit：To the circuit power supply for not needing electric energy in other instances, the first power supply is connected with second source by switch element, control unit control connecting valve unit, realize in other instances, the not purpose to the circuit power supply for not needing electric energy, considerably reduces the use of electric energy, has saved the energy.
Description
Technical field
The present invention relates to a kind of power circuit.
Background technology
The main power source of charger is used for charging to charging object, and accessory power supply connection is charger auxiliary circuit,
Such as internal sample circuit, drive circuit, fan circuit, single-chip microcomputer and communicating circuit, external sampling circuit, input and output protection
Circuit, internal protection circuitry etc., these auxiliary circuits are completed the various auxiliary controls of charger, connected as shown in Figure 1 for accessory power supply
Connect block diagram.Initial charger accessory power supply only has one, is powered for all auxiliary circuits, but charger is due to workability
The relation of matter, may be often in holding state.
When charger is in holding state, some auxiliary circuits are no longer working conditions, also avoid the need for carrying to them
Power supply energy.But at present, charger accessory power supply is to all auxiliary circuit power supplies, may not aided in part individually
Circuit is powered, and this has resulted in the waste of a large amount of electric energy.
The content of the invention
It is an object of the invention to provide a kind of power supply to select control circuit, idle to solve in the standby state
Circuit can still consume the problem of electric energy.
To achieve the above object, the solution of the present invention includes a kind of power circuit, including the first power subsystem, second source
Unit, switch element, control unit, the first power subsystem connect second source unit by switch element；Control unit controls
Connecting valve unit, for controlling second source unit to be connected in the state of setting or disconnecting the first power subsystem.
Further, power circuit also includes charhing unit, and the first power subsystem connects second source by charhing unit
Unit, charhing unit are used to provide the charge circuit between the first power subsystem and second source unit；Control unit control connects
Charhing unit is connect, for controlling opening and disconnecting for charhing unit.
Further, power circuit also includes a feedback unit, for detecting the voltage of second source unit, when second
When the voltage of power subsystem exceedes preset value, feedback unit opens switch element by control unit, makes second source unit straight
Lead to the first power subsystem in succession.
Further, switch element is relay RY1；Second source unit includes a charging capacitor C1；Charhing unit
Resistance R4 and triode Q2 including series connection, triode Q2 base stage are used to connect control unit；Feedback unit includes resistance R8
The series arm formed with resistance R9, series arm one end connection charging capacitor C1, the connection control of the series arm other end are single
Member, the dividing point connection control unit between resistance R8 and resistance R9.
Control unit includes voltage-stablizer U1 and voltage-stablizer U2, series arm other end connection voltage-stablizer U1's and voltage-stablizer U2
Anode, dividing point between resistance R8 and resistance R9 pass through diode D1 connection voltage-stablizers U2 reference edge, resistance R8 and resistance
Dividing point between R9 connects voltage-stablizer U1 reference edge, level signal CTR input connection voltage-stablizer U2 reference simultaneously
End, voltage-stablizer U2 cathodic control connecting triode Q2；Voltage-stablizer U1 cathodic control connecting triode Q1, triode Q1 with after
Electrical equipment RY1 control coil series connection, the first power subsystem connect charging capacitor C1 by relay RY1 normally opened contact.
The present invention provides two accessory power supplys, the first power subsystem：To the circuit for being required for electric energy in any case or
Power elements, second source unit：To the circuit or power elements for not needing electric energy in other instances, the first power subsystem
Connected with second source unit by switch element, control unit control connecting valve unit, pass through leading for controlling switch unit
Logical and shut-off, electric energy can be provided under certain condition or can not provide the purpose of electric energy, pole by realizing second source unit
The earth reduces the use of electric energy, has saved the energy.
Brief description of the drawings
Fig. 1 is prior art accessory power supply connection block diagram；
Fig. 2 is the connection block diagram of accessory power supply of the present invention；
Fig. 3 is simple control block diagram one of the invention；
Fig. 4 is simple control block diagram two of the invention；
Fig. 5 is control circuit schematic diagram in detail of the invention.
Embodiment
The present invention will be further described in detail below in conjunction with the accompanying drawings.
A kind of power circuit, including the first power subsystem, second source unit, switch element, control unit, the first power supply
Unit connects second source unit by switch element；Control unit controls connecting valve unit, for controlling second source list
Member connects or disconnected the first power subsystem in the state of setting.
Based on above technical scheme, with reference to accompanying drawing, provide with next embodiment.
Exemplified by power circuit provided by the invention is for reduction charger stand-by power consumption.
In the standby state, some auxiliary circuits do not work charger, also avoid the need for providing electric energy to it.Based on above-mentioned
Principle, there is provided two accessory power supplys, be：First power subsystem, second source unit, the first power subsystem are connected to charger and appointed
The control circuit of electric energy is required under what state, second source unit is connected under charger holding state and do not worked, also just not
Need to provide the drive circuit of electric energy for it.As shown in Figure 2.
The power circuit for being used to reduce charger stand-by power consumption includes the first power subsystem, second source unit, switch
Unit, control unit, the first power subsystem connect second source unit by switch element；Control unit controls connecting valve list
Member, for controlling second source unit to be connected in the state of setting or disconnecting the first power subsystem, as shown in Figure 3.
Further, as shown in figure 4, power circuit also includes charhing unit, the first power subsystem is connected by charhing unit
Second source unit is connect, charhing unit is used to provide the charge circuit between the first power subsystem and second source unit；Control
Unit control connection charhing unit, for controlling opening and disconnecting for charhing unit.Power circuit also includes a feedback unit,
For detecting the voltage of second source unit, when the voltage of second source unit exceedes preset value, feedback unit passes through control
Unit opens switch element, makes second source unit directly the first power subsystem of connection.
Switch element is relay RY1；Second source unit includes a charging capacitor C1；Charhing unit includes series connection
Resistance R4 and triode Q2, triode Q2 base stage are used to connect control unit；Feedback unit includes resistance R8 and resistance R9 structures
Into series arm, the series arm one end connection charging capacitor C1, the series arm other end connection control unit, resistance R8 with
Dividing point connection control unit between resistance R9.
Control unit includes voltage-stablizer U1 and voltage-stablizer U2, series arm other end connection voltage-stablizer U1's and voltage-stablizer U2
Anode, dividing point between resistance R8 and resistance R9 pass through diode D1 connection voltage-stablizers U2 reference edge, resistance R8 and resistance
Dividing point between R9 connects voltage-stablizer U1 reference edge, level signal CTR input connection voltage-stablizer U2 reference simultaneously
End, voltage-stablizer U2 cathodic control connecting triode Q2；Voltage-stablizer U1 cathodic control connecting triode Q1, triode Q1 with after
Electrical equipment RY1 control coil series connection, the first power subsystem connect charging capacitor C1 by relay RY1 normally opened contact.
Specific circuit diagram is as shown in figure 4, the specific connection of the circuit diagram is：
Resistance R1 one end connection the first power subsystem VCC and triode Q1 emitter stage, resistance R1 other end connection
Resistance R2 one end and voltage-stablizer U1 negative electrode, resistance R2 other end connecting triode Q1 base stage, triode Q1 current collection
Pole passes through resistance R3 connection relays RY1 coil, voltage-stablizer U1 anode connection voltage-stablizer U2 anode and the one of resistance R9
End, the resistance R9 other end connection reference edge of voltage-stablizer, diode D1 positive pole, resistance R8 one end, diode D1's is another
One end connection resistance R7 one end and level signal CTR input, the reference edge of resistance R7 other end connection voltage-stablizer, electricity
R8 other end connection second source unit --- electric capacity C1 and triode Q2 colelctor electrode is hindered, the electric capacity C1 other end is grounded,
Triode Q2 base stage connection resistance R6 one end, resistance R6 other end connection resistance R5 one end and voltage-stablizer U2 the moon
Pole, resistance R5 other end connection resistance R4 one end and triode Q2 emitter stage, resistance R4 other end connection VCC and after
One end of electrical equipment RY1 normally opened contact, the other end of electric capacity C1 connection relays RY1 normally opened contact.
When charger is standby, level signal CTR inputs are low level (being less than 2.5V), and U2 negative electrode is high level, Q2
CE be not turned on, while CTR is dragged down U1 reference edge level by diode D1, and the negative electrode for making U1 is high level, Q1 CE
It is not turned on, does not have voltage in the coil of relay, normally opened contact does not close, so no voltage on electric capacity C1, VCC_1 current potential
For 0.Electric capacity C1 cannot provide electric energy to the circuit of its connection, reach the purpose for saving electric energy.
Charger by it is standby switch to charged state when, CTR inputs by low level switch to high level (being more than 2.5V), U2 the moon
Extremely low level, Q2 CE conductings, VCC are charged by resistance R4 to electric capacity C1, can also when C1 magnitude of voltage is close to VCC
Say, when C1 magnitude of voltage is a certain setting value, the sampled signal VS level obtained by resistance R8, R9 partial pressure reaches 2.5V, U1
Negative electrode be low level, triode Q1 CE conductings, relay RY1 coils obtain electric, relay contact closure, electric capacity C1 and VCC
Connected by relay contact, VCC continues as electric capacity C1 chargings, and both final voltages reach consistent.Electric capacity C1 connects to it
Circuit provides electric energy.
When charger charges the battery：CTR inputs are high level, relay RY1 contact closures, the electricity such as electric capacity C1 and VCC
Pressure value.Electric capacity C1 provides electric energy to its circuit connected.
When charger turns standby by charging：CTR inputs switch to low level by high level, and U2 negative electrodes switch to high electricity by low level
Flat, Q2 CE is not turned on, while CTR moves U1 reference edge to low level by diode D1, and U1 negative electrode is high level, Q1
CE be not turned on, relay coil dead electricity, contact disconnects, and electric capacity C1 ground connection electric discharges, electric capacity C1 magnitude of voltage is reduced to 0.Electric capacity C1
Electric energy can not be provided to the circuit of its connection.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.The base of the present invention
This thinking is above-mentioned basic scheme, for those of ordinary skill in the art, according to the teachings of the present invention, designs various changes
The model of shape, formula, parameter simultaneously need not spend creative work.It is right without departing from the principles and spirit of the present invention
The change, modification, replacement and modification that embodiment is carried out are still fallen within protection scope of the present invention.
Claims (4)
1. a kind of power circuit, it is characterised in that the power circuit includes the first power subsystem, second source unit, switch
Unit, control unit, first power subsystem connect second source unit by switch element；Control unit control connection institute
Switch element is stated, for controlling the second source unit to be connected in the state of setting or disconnecting the first power subsystem；It is described
Second source unit includes a charging capacitor C1；
The power circuit also includes a feedback unit, for detecting the voltage of second source unit, when second source unit
Voltage when exceeding preset value, feedback unit opens the switch element by control unit, makes the second source unit straight
Lead to first power subsystem in succession；
The feedback unit includes the series arm that resistance R8 and resistance R9 is formed, series arm one end connection charging capacitor
C1, series arm other end connection control unit, the dividing point connection control unit between resistance R8 and resistance R9.
2. power circuit according to claim 1, it is characterised in that the power circuit also includes charhing unit, and first
Power subsystem connects second source unit by charhing unit, and the charhing unit is used to provide the first power subsystem and the second electricity
Charge circuit between source unit；Described control unit control connects the charhing unit, for controlling the open-minded of charhing unit
With disconnection.
3. power circuit according to claim 2, it is characterised in that the switch element is relay RY1；The charging
Resistance R4 and triode Q2, the triode Q2 that unit includes series connection base stage are used to connect control unit.
4. power circuit according to claim 3, it is characterised in that described control unit includes voltage-stablizer U1 and voltage-stablizer
U2, the anode of the series arm other end connection voltage-stablizer U1 and voltage-stablizer U2, point between the resistance R8 and resistance R9
For pressure point by diode D1 connection voltage-stablizers U2 reference edge, the dividing point between resistance R8 and resistance R9 connects voltage-stablizer simultaneously
U1 reference edge, level signal CTR input connection voltage-stablizer U2 reference edge, voltage-stablizer U2 cathodic control connect three poles
Pipe Q2；Voltage-stablizer U1 cathodic control connecting triode Q1, triode Q1 connects with the control coil of the relay RY1, the
One power subsystem connects charging capacitor C1 by relay RY1 normally opened contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606211.XA CN104333113B (en) | 2014-10-31 | 2014-10-31 | A kind of power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606211.XA CN104333113B (en) | 2014-10-31 | 2014-10-31 | A kind of power circuit |
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| Publication Number | Publication Date |
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| CN104333113A CN104333113A (en) | 2015-02-04 |
| CN104333113B true CN104333113B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410606211.XA Active CN104333113B (en) | 2014-10-31 | 2014-10-31 | A kind of power circuit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591435A (en) * | 2016-01-29 | 2016-05-18 | 易事特集团股份有限公司 | Charging pile auxiliary power supply system |
| CN105634061A (en) * | 2016-01-29 | 2016-06-01 | 易事特集团股份有限公司 | Charging pile for electric vehicle |
| CN106060904A (en) * | 2016-04-13 | 2016-10-26 | 卓荣集成电路科技有限公司 | Power supply management system and method for bluetooth chip |
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| CN2733709Y (en) * | 2004-05-31 | 2005-10-12 | 四川长虹电器股份有限公司 | Switching power supply apparatus |
| CN102529460A (en) * | 2011-12-28 | 2012-07-04 | 珠海天威技术开发有限公司 | Memory chip, charging control method for memory chip in intermittent power supply, consumables container with memory chip, and imaging equipment with memory chip |
| CN202712965U (en) * | 2011-12-23 | 2013-01-30 | 崧顺电子（深圳）有限公司 | Intelligentization energy-saving system capable of automatic switches between AC (alternating current) power supply and battery |
| CN103023129A (en) * | 2011-09-22 | 2013-04-03 | 珠海格力电器股份有限公司 | Electric appliance and control circuit and method thereof |
| CN103904771A (en) * | 2012-12-27 | 2014-07-02 | Fdk株式会社 | Uninterruptible power supply |
| CN104035344A (en) * | 2013-03-04 | 2014-09-10 | 纬创资通股份有限公司 | Power saving device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060082351A1 (en) * | 2004-10-15 | 2006-04-20 | Martins Marcus M | Low power operation of back-up power supply |
| US20090121686A1 (en) * | 2007-11-12 | 2009-05-14 | Rober Lo | Power saving charger |
| CN201608557U (en) * | 2009-11-10 | 2010-10-13 | 国基电子（上海）有限公司 | Power supply circuit for mobile phone |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2733709Y (en) * | 2004-05-31 | 2005-10-12 | 四川长虹电器股份有限公司 | Switching power supply apparatus |
| CN103023129A (en) * | 2011-09-22 | 2013-04-03 | 珠海格力电器股份有限公司 | Electric appliance and control circuit and method thereof |
| CN202712965U (en) * | 2011-12-23 | 2013-01-30 | 崧顺电子（深圳）有限公司 | Intelligentization energy-saving system capable of automatic switches between AC (alternating current) power supply and battery |
| CN102529460A (en) * | 2011-12-28 | 2012-07-04 | 珠海天威技术开发有限公司 | Memory chip, charging control method for memory chip in intermittent power supply, consumables container with memory chip, and imaging equipment with memory chip |
| CN103904771A (en) * | 2012-12-27 | 2014-07-02 | Fdk株式会社 | Uninterruptible power supply |
| CN104035344A (en) * | 2013-03-04 | 2014-09-10 | 纬创资通股份有限公司 | Power saving device |
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| Publication number | Publication date |
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| CN104333113A (en) | 2015-02-04 |
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