CN103973106A - Power supply system with pulse signal generator - Google Patents
Power supply system with pulse signal generator Download PDFInfo
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- CN103973106A CN103973106A CN201310035858.7A CN201310035858A CN103973106A CN 103973106 A CN103973106 A CN 103973106A CN 201310035858 A CN201310035858 A CN 201310035858A CN 103973106 A CN103973106 A CN 103973106A
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- power supply
- pulse signal
- diverter switch
- circuit
- input voltage
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Abstract
The invention relates to a power supply system connected with a load. The power supply system comprises a power supply providing an input voltage, a switch, a detection circuit and a control circuit. One end of the switch is connected with the power supply electrically while the other end is connected with a ground terminal electrically via a resistor. The detection circuit is used for detecting the input voltage. The control circuit is electrically connected with the detection circuit and the switch, and is provided with a comparator and a pulse signal generator. The comparator compares the input voltage to a preset reference voltage, a control signal is generated and inputted to the pulse signal generator when the input voltage is higher than the preset reference voltage, the pulse signal generator is enabled to generate a pulse signal according to the control signal so as to control the switch to be switched on, switching-on time of the switch is prolonged via a pulse time of the pulse signal, and input current outputted by the power supply is transmitted to the ground terminal via the switch and the resistor. By the power supply system, the power supply can be prevented from being under an open-circuit high-voltage state so as to protect a circuit inside the load.
Description
Technical field
This case relates to a kind of power system, relates in particular to a kind of power system with pulse signal producer.
Background technology
Because the efficiency of solar cell of new generation (Solar cell) constantly promotes; volume production scale of investment improves constantly; price constantly declines; add government subsidy encouragement, make global use amount increasing, and along with new material is constantly developed; solar cell has more variation; more develop solar cell application in homebrew, for example: roof, window, curtain etc., helpful for energy savings and environmental protection.
Refer to Fig. 1, it is the existing power supply circuits configuration diagram using solar cell as power supply, as shown in the figure, existing power supply circuits mainly provide charge power supply by solar cell 11, battery module 15 is charged and provides load 12 to operate required power supply, existing power supply circuits also comprise an isolating diode 13 and a diverter switch 14 in addition, one end of isolating diode 13 and solar cell 11 are electrically connected, the other end is electrically connected with load 12 and diverter switch 14, one end of diverter switch 14 and isolating diode 13 and load 12 are electrically connected, the other end is electrically connected with battery module 15.
In the time that solar cell 11 carries out charging procedure to battery module 15, diverter switch 14 is by conducting, the power supply that solar cell 11 produces is charged to battery module 15 via isolating diode 13 and diverter switch 14, also can provide load 12 to operate required power supply via isolating diode 13 simultaneously, in the time that the inner stored voltages of battery module 15 approach saturation voltage, diverter switch 14 will be ended, and solar cell 11 cannot be charged to battery module 15 again.
In the time that battery module 15 starts to absorb few electric current or diverter switch 14 and ends, solar cell 11 also can provide load 12 to operate required power supply via isolating diode 13 at any time, but in the time that battery module 15 starts to absorb few electric current or diverter switch 14 and ends, if now load 12 also consumes few electric current or abnormal power-down, and solar cell 11 enters the state of open circuit high pressure, the situation that the high voltage that the lasting running of solar cell 11 produces can burn load 12 internal circuits.
Therefore, how to develop a kind of above-mentioned existing defective power system with pulse signal producer that solves, real is current problem in the urgent need to address.
Summary of the invention
The main purpose of this case is to provide a kind of power system with pulse signal producer, to solve existing power supply circuits in the time that battery module starts to absorb few electric current or diverter switch cut-off, if now load also consumes few electric current or abnormal power-down, solar cell enters the state of open circuit high pressure, the shortcoming that can burn load circuit.
For reaching above-mentioned purpose, one of this case is implemented aspect for a kind of power system is provided compared with broad sense, is connected with a load, at least comprises: a battery module, one power supply, provides an input voltage, one diverter switch, one end and this power supply are electrically connected, and the other end is electrically connected via resistance and an earth terminal, one power-switching circuit, is electrically connected with this power supply, this diverter switch and this battery module, in order to convert this input voltage to an output voltage, this battery module is charged and provide this load required power supply, one testing circuit, is electrically connected with this diverter switch and this power-switching circuit, to detect this input voltage, an and control circuit, be electrically connected with this testing circuit and this diverter switch, and there is a comparator and a pulse signal producer, this pulse signal producer and this comparator and this diverter switch are electrically connected, this comparator and this testing circuit and this pulse signal producer are electrically connected, this comparator compares this input voltage and a preset reference voltage, in the time that this input voltage is greater than this preset reference voltage, produce one and control signal to this pulse signal producer, make this pulse signal producer produce a pulse signal according to this control signal, to control this diverter switch conducting, and extend the ON time of this diverter switch with the one-pulse time of this pulse signal, make an input current that this power supply exports via this diverter switch, resistance is sent to this earth terminal, reduce immediately input voltage, electric consumption electric power, balance sysmte energy, after the burst length, also can recover rapidly normal power supply and monitoring input voltage.
Beneficial effect of the present invention is, the input voltage that the power system with pulse signal producer of this case provides power supply by comparator and a preset reference voltage compare, and in the time that this input voltage is greater than this preset reference voltage, produce one and control signal to this pulse signal producer, make this pulse signal producer produce a pulse signal according to this control signal, to control this diverter switch conducting, and extend the ON time of this diverter switch with the one-pulse time of pulse signal, make this input voltage that this power supply is exported be sent to this earth terminal via this diverter switch, can avoid power supply to enter open circuit high pressure conditions, with the circuit of protection load inside, and by the control of pulse signal, the ON time of diverter switch is extended, can electric consumption electric power and balance sysmte energy, after the burst length, also can restore electricity rapidly and monitor.
Brief description of the drawings
Fig. 1 is the existing power supply circuits configuration diagram using solar cell as power supply.
Fig. 2 is the electrical block diagram of the power system of this case preferred embodiment.
Fig. 3 is the oscillogram of the input voltage shown in Fig. 2, cell voltage and diverter switch action.
Wherein, description of reference numerals is as follows:
Solar cell: 11
Load: 12,3
Isolating diode: 13
Diverter switch: 14
Battery module: 15
Power system: 2
Power supply: 21
Power-switching circuit: 22
Battery module: 23
Testing circuit: 24
Control circuit: 25
Comparator: 251
Pulse signal producer: 252
Diverter switch: 26
Input voltage: Vin
Output voltage: Vout
Cell voltage: Vb
Control signal: Sc
Pulse signal: Sp
Preset reference voltage: Vref
Resistance: R
Earth terminal: G
Burst length: T
Embodiment
Some exemplary embodiments that embody this case feature & benefits will describe in detail in the explanation of back segment.Be understood that this case can have various variations in different aspects, it neither departs from the scope of this case, and explanation wherein and be shown in the use that ought explain in essence, but not framework is in restriction this case.
Refer to Fig. 2, the electrical block diagram of its power system that is this case preferred embodiment.As shown in Figure 2, power system 2 and the load 3 of this case are electrically connected, in order to provide load 3 to operate required power supply, power system 2 can comprise power supply 21, power-switching circuit 22, battery module 23, testing circuit 24, control circuit 25 and diverter switch 26, wherein power supply 21 is mainly used to provide an input voltage vin, and power supply 21 can be solar cell or wind-driven generator, its inside can comprise a storage battery (not shown), in the present embodiment, the storage battery that power supply 21 inside comprise can be lead-acid battery, lithium ion battery or ferric phosphate lithium cell one of them.
The power-switching circuit 22 of this case can be a direct current DC converting circuit, itself and power supply 21, diverter switch 26, testing circuit 24 and battery module 23 are electrically connected, input voltage vin can be converted to a direct current output voltage V out, battery module 23 is charged and provides load 3 to operate required power supply, and one end of testing circuit 24 system is electrically connected with diverter switch 26 and power-switching circuit 22, the other end is electrically connected with control circuit 25, be mainly used to detect the input voltage vin that power supply 21 provides, in the present embodiment, testing circuit 24 can be but not be limited to by a bleeder circuit and formed, in addition, diverter switch 26 its one end and the power supply 21 of this case are electrically connected, the other end is electrically connected with a resistance R, the other end of resistance R is electrically connected an earth terminal G, wherein the resistance R of this case can electric consumption electric power, can be semi-conductive conducting resistance, cement resistor or other assistant loads as dummy load.
Referring again to Fig. 2 and Fig. 3, wherein Fig. 3 is the oscillogram of the input voltage shown in Fig. 2, cell voltage and diverter switch action, the control circuit 25 of this case is electrically connected with testing circuit 24 and diverter switch 26, and receive a preset reference voltage Vref, wherein this preset reference voltage Vref impose a condition for: in the time that battery module 23 starts to absorb few electric current or diverter switch 26 is ended and load 3 consumes few electric current or abnormal power-down, this preset reference voltage Vref is not burn under power-switching circuit 22 and load 3 circuit, acceptable maximum input voltage.Control circuit 25 inside have a comparator 251 and a pulse signal producer 252, this pulse signal producer 252 can be a pulse duration and produces circuit, and be electrically connected with comparator 251 and diverter switch 26, as for, 251 of comparators are electrically connected with testing circuit 24 and pulse signal producer 252, and can be but not be limited to a hysteresis voltage comparator.
The measured input voltage vin of comparator 251 receiving test circuit 24, and input voltage vin and a preset reference voltage Vref are compared, in the time that comparative result is greater than preset reference voltage Vref for this input voltage vin, produce a control signal Sc to pulse signal producer 252, make pulse signal producer 252 produce a pulse signal Sp according to the triggering of this control signal Sc, wherein this pulse signal Sp has burst length T, to control the conducting (referring to Fig. 3) in this burst length T of this diverter switch 26, to extend the ON time of this diverter switch 26 by the burst length T of this pulse signal Sp, and make the input current that power supply 21 provides be sent to earth terminal G via diverter switch 26 and resistance R.
Referring again to Fig. 2 and Fig. 3, in the interval of this burst length T, diverter switch 26 conductings are so that the input current that power supply 21 provides is sent to earth terminal G via resistance R, therefore testing circuit 24 detects that input voltage vin is to approach no-voltage (being the voltage of resistance R), because being less than load 3, input voltage vin operates required voltage, therefore load 3 operates required power supply and changes by battery module 23 and provided, and the cell voltage Vb of battery module 23 also will down reduce naturally, until after burst length T finishes, pulse signal Sp will control diverter switch 26 and end, so that the input voltage vin that power supply 21 provides is changed via power-switching circuit 22 and battery module 23 is charged and provides load 3 required power supply, and testing circuit 24 continues to detect input voltage vin and be sent to comparator 251 to compare during this, until the result that comparator 251 is compared is input voltage vin while being greater than preset reference voltage Vref, comparator 251 just can produce control signal Sc to pulse signal producer 252, make pulse signal producer 252 produce a pulse signal Sp according to the triggering of this control signal Sc, to control the conducting in this burst length T of this diverter switch 26, make the input current that power supply 21 provides be sent to earth terminal G via diverter switch 26 and resistance R, constantly repeat running to provide stabilized power supply battery module 23 is charged and provide load 3 required power supply by above-mentioned mode, and in the time that input voltage vin is greater than preset reference voltage Vref, by diverter switch 26 conductings with input current that power supply 21 is provided via resistance R input grounding end G, can avoid power supply 21 to enter open circuit high pressure conditions, with the circuit of protection power source change-over circuit 22 and load 3 inside, and by the control of pulse signal Sp, the ON time of diverter switch 26 is extended, can reduce immediately input voltage vin, electric consumption electric power, balance sysmte energy, after burst length T, also can recover rapidly normal power supply and monitoring, when general number of pulses can absorb few electric current or diverter switch cut-off with battery module 23 and load 3 consume the time length of few electric current or abnormal power-down and increase and decrease relatively.
In sum, the input voltage that the power system with pulse signal producer of this case provides power supply by comparator and a preset reference voltage compare, and in the time that this input voltage is greater than this preset reference voltage, produce one and control signal to this pulse signal producer, make this pulse signal producer produce a pulse signal according to this control signal, to control this diverter switch conducting, and extend the ON time of this diverter switch with the one-pulse time of pulse signal, make this input voltage that this power supply is exported be sent to this earth terminal via this diverter switch, can avoid power supply to enter open circuit high pressure conditions, with the circuit of protection load inside, and by the control of pulse signal, the ON time of diverter switch is extended, can electric consumption electric power and balance sysmte energy, after the burst length, also can restore electricity rapidly and monitor.
This case must be appointed and be executed that craftsman thinks and be to modify as all by person familiar with the technology, so neither de-as Protector that attached claim is wanted.
Claims (7)
1. a power system, is connected with a load, at least comprises:
One battery module;
One power supply, provides an input voltage;
One diverter switch, one end and this power supply are electrically connected, and the other end is electrically connected via a resistance and an earth terminal;
One power-switching circuit, is electrically connected with this power supply, this diverter switch and this battery module, in order to convert this input voltage to an output voltage, this battery module is charged and provide this load required power supply;
One testing circuit, is electrically connected with this diverter switch and this power-switching circuit, to detect this input voltage; And
One control circuit, be electrically connected with this testing circuit and this diverter switch, and there is a comparator and a pulse signal producer, this pulse signal producer and this comparator and this diverter switch are electrically connected, this comparator and this testing circuit and this pulse signal producer are electrically connected, this comparator compares this input voltage and a preset reference voltage, in the time that this input voltage is greater than this preset reference voltage, produce one and control signal to this pulse signal producer, make this pulse signal producer produce a pulse signal according to this control signal, to control this diverter switch conducting, and extend the ON time of this diverter switch with the one-pulse time of this pulse signal, make an input current that this power supply exports via this diverter switch, this resistance is sent to this earth terminal.
2. power system as claimed in claim 1, wherein this power supply is a solar cell or a wind-driven generator.
3. power system as claimed in claim 1, wherein this power-switching circuit is a direct current DC converting circuit, to convert this input voltage to a VD, this battery module is charged and provide this load required power supply.
4. power system as claimed in claim 1, the storage battery that wherein this power supply inside is used is lead-acid battery, lithium ion battery or ferric phosphate lithium cell.
5. power system as claimed in claim 1, wherein this testing circuit is a bleeder circuit.
6. power system as claimed in claim 1, wherein this pulse signal producer is that a pulse duration produces circuit.
7. power system as claimed in claim 1, wherein, in the time of this diverter switch conducting, the required power supply of this load is provided by this battery module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310035858.7A CN103973106A (en) | 2013-01-30 | 2013-01-30 | Power supply system with pulse signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310035858.7A CN103973106A (en) | 2013-01-30 | 2013-01-30 | Power supply system with pulse signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103973106A true CN103973106A (en) | 2014-08-06 |
Family
ID=51242263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310035858.7A Pending CN103973106A (en) | 2013-01-30 | 2013-01-30 | Power supply system with pulse signal generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103973106A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656477A (en) * | 2014-12-24 | 2015-05-27 | 合肥美的暖通设备有限公司 | Power supply system of air energy water heater and control method of power supply system |
| US10756626B2 (en) | 2017-08-30 | 2020-08-25 | Asustek Computer Inc. | Power conversion circuit |
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| CN201398088Y (en) * | 2009-05-15 | 2010-02-03 | 冠捷投资有限公司 | Battery balanced circuit and power supply system |
| CN101728982A (en) * | 2008-10-27 | 2010-06-09 | 凹凸电子（武汉）有限公司 | Power converting circuit and power converting method |
| CN101944758A (en) * | 2010-09-24 | 2011-01-12 | 鸿富锦精密工业（深圳）有限公司 | Battery management system with function of dynamically assigning charging current and method thereof |
| CN102244461A (en) * | 2010-05-12 | 2011-11-16 | 日隆电子股份有限公司 | Leakage circuit and method for reducing power consumption of electromagnetic interference filer |
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2013
- 2013-01-30 CN CN201310035858.7A patent/CN103973106A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101092002A (en) * | 2007-07-27 | 2007-12-26 | 北京工业大学 | Control system for inversion arc welding source |
| CN101499641A (en) * | 2008-01-28 | 2009-08-05 | 咸瑞科技股份有限公司 | Surging resistant high voltage protection circuit |
| CN101728982A (en) * | 2008-10-27 | 2010-06-09 | 凹凸电子（武汉）有限公司 | Power converting circuit and power converting method |
| CN201398088Y (en) * | 2009-05-15 | 2010-02-03 | 冠捷投资有限公司 | Battery balanced circuit and power supply system |
| CN102244461A (en) * | 2010-05-12 | 2011-11-16 | 日隆电子股份有限公司 | Leakage circuit and method for reducing power consumption of electromagnetic interference filer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656477A (en) * | 2014-12-24 | 2015-05-27 | 合肥美的暖通设备有限公司 | Power supply system of air energy water heater and control method of power supply system |
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| US10756626B2 (en) | 2017-08-30 | 2020-08-25 | Asustek Computer Inc. | Power conversion circuit |
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Application publication date: 20140806 |