CN104333113A - Power circuit - Google Patents
Power circuit Download PDFInfo
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- CN104333113A CN104333113A CN201410606211.XA CN201410606211A CN104333113A CN 104333113 A CN104333113 A CN 104333113A CN 201410606211 A CN201410606211 A CN 201410606211A CN 104333113 A CN104333113 A CN 104333113A
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Abstract
The invention relates to a power circuit which comprises a first power unit, a second power unit, a switching unit and a control unit, wherein the first power unit is connected with the second power unit through the switching unit, the control unit is connected with the switching unit in a controlling manner, so that the second power unit is controlled to be connected with or disconnected from the first power unit in a set state. The power circuit is provided with two auxiliary power supplies, the first power unit supplies power for a circuit needing electric energy in any cases, the second power unit supplies power or does not supply power for a circuit not needing the electric energy in some cases, use of the electric energy is greatly decreased, and the energy is saved.
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; what accessory power supply connected is charger auxiliary circuit; such as internal sample circuit, drive circuit, fan circuit, single-chip microcomputer and communicating circuit, external sampling circuit, protection circuit for input and output, internal protection circuitry etc.; these auxiliary circuits complete the various auxiliary control of charger, are illustrated in figure 1 accessory power supply and connect block diagram.Initial charger accessory power supply only has one, and for all auxiliary circuits are powered, but charger is due to the relation of job specification, often may be in holding state.
When charger is in holding state, some auxiliary circuit is no longer operating state, also does not just need to provide electric energy to them.But at present, charger accessory power supply is powered to all auxiliary circuits, may not power to separately part auxiliary circuit, this just causes the waste of a large amount of electric energy.
Summary of the invention
The object of this invention is to provide a kind of power supply and select control circuit, in order to solve in the standby state, idle circuit still can consume the problem of electric energy.
For achieving the above object, the solution of the present invention comprises a kind of power circuit, comprises the first power subsystem, second source unit, switch element, control unit, and the first power subsystem connects second source unit by switch element; Control unit control connection switch element, is communicated with when set condition for controlling second source unit or disconnects the first power subsystem.
Further, power circuit also comprises charhing unit, and the first power subsystem connects second source unit by charhing unit, and charhing unit is for providing the charge circuit between the first power subsystem and second source unit; Control unit control connection charhing unit, for controlling opening and disconnection of charhing unit.
Further, power circuit also comprises a feedback unit, for detecting the voltage of second source unit, when the voltage of second source unit exceedes preset value, feedback unit opens switch element by control unit, makes second source unit directly be communicated with the first power subsystem.
Further, switch element is relay R Y1; Second source unit comprises a charging capacitor C1; Charhing unit comprises resistance R4 and the triode Q2 of series connection, and the base stage of triode Q2 is used for connection control unit; Feedback unit comprises the series arm that resistance R8 and resistance R9 is formed, and this series arm one end connects charging capacitor C1, series arm other end connection control unit, the dividing point connection control unit between resistance R8 and resistance R9.
Control unit comprises pressurizer U1 and pressurizer U2, the series arm other end connects the anode of pressurizer U1 and pressurizer U2, dividing point between resistance R8 with resistance R9 is connected the reference edge of pressurizer U2 by diode D1, dividing point between resistance R8 with resistance R9 is connected the reference edge of pressurizer U1 simultaneously, the input of level signal CTR connects the reference edge of pressurizer U2, the cathodic control connecting triode Q2 of pressurizer U2; The cathodic control connecting triode Q1 of pressurizer U1, triode Q1 connects with the control coil of relay R Y1, and the first power subsystem connects charging capacitor C1 by the normally opened contact of relay R Y1.
The invention provides two accessory power supplys, first power subsystem: give the circuit or the power elements that all need electric energy in any case, second source unit: give the circuit or the power elements that do not need electric energy in other instances, first power subsystem is connected by switch element with second source unit, control unit control connection switch element, by the turn-on and turn-off of control switch unit, achieve the object that second source unit can provide electric energy under certain condition or can not provide electric energy, considerably reduce the use of electric energy, save the energy.
Accompanying drawing explanation
Fig. 1 is that prior art accessory power supply connects block diagram;
Fig. 2 is the connection block diagram of accessory power supply of the present invention;
Fig. 3 is the simple and easy control block diagram one of the present invention;
Fig. 4 is the simple and easy control block diagram two of the present invention;
Fig. 5 is the detailed control circuit schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
A kind of power circuit, comprises the first power subsystem, second source unit, switch element, control unit, and the first power subsystem connects second source unit by switch element; Control unit control connection switch element, is communicated with when set condition for controlling second source unit or disconnects the first power subsystem.
Based on above technical scheme, by reference to the accompanying drawings, provide with next embodiment.
Power circuit provided by the invention is example for reduction charger stand-by power consumption.
In the standby state, some auxiliary circuit does not work charger, also does not just need to provide electric energy to it.Based on above-mentioned principle, two accessory power supplys are provided, for: the first power subsystem, second source unit, first power subsystem all needs the control circuit of electric energy under being connected to any state of charger, second source unit does not work under being connected to charger holding state, does not also just need for it provides the drive circuit of electric energy.As shown in Figure 2.
Should comprise the first power subsystem, second source unit, switch element, control unit for reducing the power circuit of charger stand-by power consumption, the first power subsystem connects second source unit by switch element; Control unit control connection switch element, is communicated with when set condition for controlling second source unit or disconnects the first power subsystem, as shown in Figure 3.
Further, as shown in Figure 4, power circuit also comprises charhing unit, and the first power subsystem connects second source unit by charhing unit, and charhing unit is for providing the charge circuit between the first power subsystem and second source unit; Control unit control connection charhing unit, for controlling opening and disconnection of charhing unit.Power circuit also comprises a feedback unit, and for detecting the voltage of second source unit, when the voltage of second source unit exceedes preset value, feedback unit opens switch element by control unit, makes second source unit directly be communicated with the first power subsystem.
Switch element is relay R Y1; Second source unit comprises a charging capacitor C1; Charhing unit comprises resistance R4 and the triode Q2 of series connection, and the base stage of triode Q2 is used for connection control unit; Feedback unit comprises the series arm that resistance R8 and resistance R9 is formed, and this series arm one end connects charging capacitor C1, series arm other end connection control unit, the dividing point connection control unit between resistance R8 and resistance R9.
Control unit comprises pressurizer U1 and pressurizer U2, the series arm other end connects the anode of pressurizer U1 and pressurizer U2, dividing point between resistance R8 with resistance R9 is connected the reference edge of pressurizer U2 by diode D1, dividing point between resistance R8 with resistance R9 is connected the reference edge of pressurizer U1 simultaneously, the input of level signal CTR connects the reference edge of pressurizer U2, the cathodic control connecting triode Q2 of pressurizer U2; The cathodic control connecting triode Q1 of pressurizer U1, triode Q1 connects with the control coil of relay R Y1, and the first power subsystem connects charging capacitor C1 by the normally opened contact of relay R Y1.
As shown in Figure 4, the concrete connection of this circuit diagram is concrete circuit diagram:
One end of resistance R1 connects the emitter of the first power subsystem VCC and triode Q1, one end of other end contact resistance R2 of resistance R1 and the negative electrode of pressurizer U1, the base stage of the other end connecting triode Q1 of resistance R2, the collector electrode of triode Q1 connects the coil of relay R Y1 by resistance R3, the anode of pressurizer U1 connects the anode of pressurizer U2 and one end of resistance R9, the other end of resistance R9 connects the reference edge of pressurizer, the positive pole of diode D1, one end of resistance R8, one end of other end contact resistance R7 of diode D1 and the input of level signal CTR, the other end of resistance R7 connects the reference edge of pressurizer, the other end of resistance R8 connects second source unit---the collector electrode of electric capacity C1 and triode Q2, the other end ground connection of electric capacity C1, one end of the base stage contact resistance R6 of triode Q2, one end of other end contact resistance R5 of resistance R6 and the negative electrode of pressurizer U2, one end of other end contact resistance R4 of resistance R5 and the emitter of triode Q2, the other end of resistance R4 connects one end of the normally opened contact of VCC and relay R Y1, electric capacity C1 connects the other end of the normally opened contact of relay R Y1.
When charger is standby, level signal CTR is input as low level (being less than 2.5V), the negative electrode of U2 is high level, the CE not conducting of Q2, and the reference edge level of U1 is dragged down by diode D1 by CTR simultaneously, the negative electrode of U1 is made to be high level, the CE not conducting of Q1, do not have voltage in the coil of relay, normally opened contact does not close, so electric capacity C1 does not have voltage, the current potential of VCC_1 is 0.The circuit that electric capacity C1 just can not connect to it provides electric energy, reaches the object of saves energy.
Charger by standby transfer charged state to time, CTR input transfers high level (being greater than 2.5V) to by low level, the negative electrode of U2 is low level, the CE conducting of Q2, VCC is charged to electric capacity C1 by resistance R4, when the magnitude of voltage of C1 is close to VCC, alternatively, when the magnitude of voltage of C1 is a certain set point, by resistance R8, the sampled signal VS level that R9 dividing potential drop obtains reaches 2.5V, the negative electrode of U1 is low level, the CE conducting of triode Q1, relay R Y1 coil obtains electric, relay contact closure, electric capacity C1 and VCC is connected by relay contact, VCC continues as electric capacity C1 and charges, both voltages final reach consistent.The circuit that electric capacity C1 connects to it provides electric energy.
When charger charges the battery: CTR is input as high level, the relay R Y1 closing of contact, the magnitudes of voltage such as electric capacity C1 and VCC.The circuit that electric capacity C1 connects to it provides electric energy.
When charger turns standby by charging: CTR inputs and transfers low level to by high level, U2 negative electrode transfers high level to by low level, the CE not conducting of Q2, CTR moves the reference edge of U1 to low level by diode D1 simultaneously, and the negative electrode of U1 is high level, the CE not conducting of Q1, relay coil dead electricity, contact disconnects, and electric capacity C1 ground connection is discharged, and the magnitude of voltage of electric capacity C1 reduces to 0.The circuit that electric capacity C1 can not connect to it provides electric energy.
Be presented above concrete execution mode, but the present invention is not limited to described execution mode.Basic ideas of the present invention are above-mentioned basic scheme, and for those of ordinary skill in the art, according to instruction of the present invention, designing the model of various distortion, formula, parameter does not need to spend creative work.The change carried out execution mode without departing from the principles and spirit of the present invention, amendment, replacement and modification still fall within the scope of protection of the present invention.
Claims (5)
1. a power circuit, is characterized in that, described power circuit comprises the first power subsystem, second source unit, switch element, control unit, and described first power subsystem connects second source unit by switch element; Switch element described in control unit control connection, is communicated with when set condition for controlling described second source unit or disconnects the first power subsystem.
2. power circuit according to claim 1, it is characterized in that, described power circuit also comprises charhing unit, and the first power subsystem connects second source unit by charhing unit, and described charhing unit is for providing the charge circuit between the first power subsystem and second source unit; Charhing unit described in described control unit control connection, for controlling opening and disconnection of charhing unit.
3. power circuit according to claim 2, it is characterized in that, described power circuit also comprises a feedback unit, for detecting the voltage of second source unit, when the voltage of second source unit exceedes preset value, feedback unit opens described switch element by control unit, makes described second source unit directly be communicated with described first power subsystem.
4. power circuit according to claim 3, is characterized in that, described switch element is relay R Y1; Second source unit comprises a charging capacitor C1; Described charhing unit comprises resistance R4 and the triode Q2 of series connection, and the base stage of described triode Q2 is used for connection control unit; Described feedback unit comprises the series arm that resistance R8 and resistance R9 is formed, and this series arm one end connects charging capacitor C1, series arm other end connection control unit, the dividing point connection control unit between resistance R8 and resistance R9.
5. power circuit according to claim 4, it is characterized in that, described control unit comprises pressurizer U1 and pressurizer U2, the described series arm other end connects the anode of pressurizer U1 and pressurizer U2, described resistance R8 and the dividing point between resistance R9 are connected the reference edge of pressurizer U2 by diode D1, dividing point between resistance R8 with resistance R9 is connected the reference edge of pressurizer U1 simultaneously, the input of level signal CTR connects the reference edge of pressurizer U2, the cathodic control connecting triode Q2 of pressurizer U2; The cathodic control connecting triode Q1 of pressurizer U1, triode Q1 connects with the control coil of described relay R Y1, and the first power subsystem connects charging capacitor C1 by the normally opened contact of relay R Y1.
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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| CN104333113A true CN104333113A (en) | 2015-02-04 |
| CN104333113B 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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Cited By (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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| 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 | Electrical appliance as well as 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 |
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2014
- 2014-10-31 CN CN201410606211.XA patent/CN104333113B/en active Active
Patent Citations (9)
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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 |
| 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 |
| US20110111811A1 (en) * | 2009-11-10 | 2011-05-12 | Hon Hai Precision Industry Co., Ltd. | Mobile phone power supply circuit |
| CN103023129A (en) * | 2011-09-22 | 2013-04-03 | 珠海格力电器股份有限公司 | Electrical appliance as well as 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 |
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| CN103904771A (en) * | 2012-12-27 | 2014-07-02 | Fdk株式会社 | Uninterruptible power supply |
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Cited By (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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| Publication number | Publication date |
|---|---|
| CN104333113B (en) | 2017-12-05 |
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