CN205105107U - But dynamo power supply is sent out to fuel that low pressure input starts - Google Patents
But dynamo power supply is sent out to fuel that low pressure input starts Download PDFInfo
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- CN205105107U CN205105107U CN201520945976.6U CN201520945976U CN205105107U CN 205105107 U CN205105107 U CN 205105107U CN 201520945976 U CN201520945976 U CN 201520945976U CN 205105107 U CN205105107 U CN 205105107U
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Abstract
The utility model provides a pair of but dynamo power supply is sent out to fuel that low pressure input starts, including switching power supply circuit, switching power supply circuit's the input and the charge coil of fuel generator are connected, and the output is connected with the load, switching power supply circuit's output is provided with low pressure starting circuit, low pressure starting circuit includes the switching element and is used for the drive circuit that switches on or turn -off according to fuel generator charge coil output voltage drive switch device, drive circuit's input is connected with switching power supply circuit's forward transportation output, drive circuit's control output and switching element are connected, switching power supply circuit's negative output end is through switching element ground connection, can increase switching power supply circuit's input voltage range, even the fuel generator can guarantee when just starting that switching power supply circuit has voltage output, the storage battery of ensureing the fuel generator can charge and ensure the fuel solenoid valve smoothly and can normally open, guarantee that the fuel generator can normal boot.
Description
Technical field
The utility model relates to a kind of power supply, particularly relate to a kind of can low pressure input start oil-fired power generating electromechanical source.
Background technology
In fuel electric generator, the electromagnetic fuel needing switch power supply road direction storage battery or fuel electric generator sends out power supply, there are the following problems for the switching power circuit of existing generator: first, the input voltage range of the switching power circuit of existing fuel electric generator is little, when fuel electric generator just starts, rotating speed is told somebody what one's real intentions are, the voltage that charge coil obtains is lower, therefore switching power circuit is when input voltage is lower than set point, storage battery can not be charged or fuel solenoid valve can not be driven to open smoothly by output voltage, thus affect the storage battery charging of fuel electric generator, and fuel solenoid valve can not be opened smoothly and will fuel electric generator be caused normally to start, secondly, the ripple of the output voltage of the switching power circuit of existing fuel electric generator is large, affects the work of storage battery or electromagnetically operated valve.
Therefore, need to propose a kind of new oil-fired power generating electromechanical source, the input voltage range of switching power circuit can be increased, even if fuel electric generator can ensure that when just starting switching power circuit has voltage and exports, guarantee that the storage battery of fuel electric generator can charge and guarantee that fuel solenoid valve can normally be opened smoothly, ensure that fuel electric generator can normally start.
Utility model content
In view of this, the purpose of this utility model be to provide a kind of can low pressure input start oil-fired power generating electromechanical source, the input voltage range of switching power circuit can be increased, even if fuel electric generator can ensure that when just starting switching power circuit has voltage and exports, guarantee that the storage battery of fuel electric generator can charge and guarantee that fuel solenoid valve can normally be opened smoothly, ensure that fuel electric generator can normally start.
The utility model provide a kind of can low pressure input start oil-fired power generating electromechanical source, comprise switching power circuit, the input of described switching power circuit is connected with the charge coil of fuel electric generator, output is connected with load, and the output of described switching power circuit is provided with low-voltage starting circuit;
Described low-voltage starting circuit comprises switching device and for the drive circuit according to fuel electric generator charge coil output voltage driving switch break-over of device or shutoff, the input of described drive circuit is connected with the positive output end of switching power circuit, the control output end of drive circuit is connected with switching device, and the negative output terminal of switching power circuit is by switching device ground connection.
Further, described switching device is that the drain electrode of field effect transistor Q4, field effect transistor Q4 is connected with the negative output terminal of switching power circuit, and the source ground of field effect transistor Q4, the grid of field effect transistor Q4 is connected with drive circuit.
Further, described drive circuit comprises testing circuit and control circuit, the input of described testing circuit is connected with the positive output end of switching power circuit, and the output of testing circuit is connected with the input of control circuit, and the control output end of control circuit is connected with the control input end of switching device.
Further, described testing circuit comprises resistance R21 and resistance R22, one end of described resistance R21 is connected with the positive output end of switching power circuit as the input of testing circuit, the other end of resistance R21 is by resistance R24 ground connection, and described resistance R21 is testing circuit output with the points of common connection of resistance R24 and is connected with control circuit.
Further, described control circuit comprises resistance R22, resistance R23, triode Q3 and voltage-stabiliser tube DW5, the base stage of described triode Q3 is connected with the points of common connection of resistance R21 and resistance R24, the collector electrode of triode Q3 is connected with the positive output end of switching power circuit by resistance R22, the collector electrode of triode Q3 is connected with one end of resistance R23, the other end of resistance R23 is connected with the control input end of switching device as the output of control circuit, the collector electrode of triode Q3 is connected with the negative pole of voltage-stabiliser tube DW5, the plus earth of voltage-stabiliser tube DW5.
Further, described switching power circuit comprises rectification circuit, switching circuit, control chip and voltage feedback circuit, the input of described rectification circuit is connected with the charge coil of fuel electric generator, the output of rectification circuit is connected with the input of switching circuit, the output of switching circuit is connected with load, the input of voltage feedback circuit is connected with switching circuit, and output is connected with control chip, and the control output end of described control chip is connected with the control end of switching circuit.
Further, also comprise auxiliary power supply circuit, described auxiliary power supply circuit comprises diode D1 and diode D2, the described positive pole of diode D1 is connected with the anode of the charge coil of fuel electric generator, the positive pole of diode D2 is connected with the negative terminal of the charge coil of fuel electric generator, and diode D1 is all connected with load with the negative pole of diode D2.
The beneficial effects of the utility model: of the present utility model can low pressure input start oil-fired power generating electromechanical source, the input voltage range of switching power circuit can be increased, even if fuel electric generator can ensure that when just starting switching power circuit has voltage and exports, guarantee that the storage battery of fuel electric generator can charge and guarantee that fuel solenoid valve can normally be opened smoothly, ensure that fuel electric generator can normally start, and the ripple of the output voltage of switching power circuit can be made little, ensure that level charges normal and the normal work of electromagnetically operated valve.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Fig. 1 is schematic diagram of the present utility model, as shown in the figure, the utility model provide a kind of can low pressure input start oil-fired power generating electromechanical source, comprise switching power circuit, the input of described switching power circuit is connected with the charge coil of fuel electric generator, output is connected with load, and the output of described switching power circuit is provided with low-voltage starting circuit;
Described low-voltage starting circuit comprises switching device and for the drive circuit according to fuel electric generator charge coil output voltage driving switch break-over of device or shutoff, the input of described drive circuit is connected with the positive output end of switching power circuit, the control output end of drive circuit is connected with switching device, and the negative output terminal of switching power circuit is by switching device ground connection; Pass through said structure, the input voltage range of switching power circuit can be increased, even if fuel electric generator can ensure that when just starting switching power circuit has voltage and exports, guarantee that the storage battery of fuel electric generator can charge and guarantee that fuel solenoid valve can normally be opened smoothly, ensure that fuel electric generator can normally start, and the ripple of the output voltage of switching power circuit can be made little, ensure that level charges normal and the normal work of electromagnetically operated valve.
Wherein, described switching power circuit rectification circuit, switching circuit, control chip and voltage feedback circuit, the input of described rectification circuit is connected with the charge coil of fuel electric generator, the output of rectification circuit is connected with the input of switching circuit, the output of switching circuit is connected with load, the input of voltage feedback circuit is connected with switching circuit, and output is connected with control chip, and the control output end of described control chip is connected with the control end of switching circuit; Wherein, switching circuit is made up of elements such as transformer T1, field effect transistor Q1, diode D9 and electric capacity C4, control chip adopts UC3843 chip, voltage feedback circuit is made up of optocoupler OC1 and resistance R8 etc., certainly, switching power circuit also comprises auxiliary power circuit, and auxiliary power circuit is made up of transformer T1, diode D12, resistance R13 and voltage-stabiliser tube DW1, above-mentioned each circuit be available circuit and circuit theory diagrams as shown in Figure 1.
In the present embodiment, described switching device is field effect transistor Q4, the drain electrode of field effect transistor Q4 is connected with the negative output terminal of switching power circuit, the source ground of field effect transistor Q4, the grid of field effect transistor Q4 is connected with drive circuit, and switching device adopts field effect transistor, low in energy consumption, there is no secondary-breakdown phenomenon, good stability.
In the present embodiment, described drive circuit comprises testing circuit and control circuit, the input of described testing circuit is connected with the positive output end of switching power circuit, the output of testing circuit is connected with the input of control circuit, and the control output end of control circuit is connected with the control input end of switching device;
Wherein, described testing circuit comprises resistance R21 and resistance R22, described one end of resistance R21 is connected with the positive output end of switching power circuit, as shown in Figure 1, resistance R1 is connected with the negative pole of diode D10 or is connected with the negative pole of diode D1 and diode D2, and diode D10 and diode D1 and D2 all powers to the load; The other end of resistance R21 is by resistance R24 ground connection, and described resistance R21 is testing circuit output with the points of common connection of resistance R24 and is connected with control circuit.
Described control circuit comprises resistance R22, resistance R23, triode Q3 and voltage-stabiliser tube DW5, the base stage of described triode Q3 is connected with the points of common connection of resistance R21 and resistance R24, the collector electrode of triode Q3 is connected with the positive output end of switching power circuit by resistance R22, the collector electrode of triode Q3 is connected with one end of resistance R23, the other end of resistance R23 is connected with the control end of switching device as the output of control circuit, the collector electrode of triode Q3 is connected with the negative pole of voltage-stabiliser tube DW5, the plus earth of voltage-stabiliser tube DW5;
When switching power circuit output voltage is normal, now, by the resistance R21 in testing circuit, after the effect of resistance R24 dividing potential drop, make triode Q3 conducting, now, field effect transistor Q4 grid is low level cut-off, switching power circuit normally exports, when diesel engine generator by pull or electric control when just starting, because the charge coil output voltage of diesel engine generator is low, switching power circuit output voltage is lower, now, undertension after resistance R21 and resistance R24 dividing potential drop is to make triode Q3 conducting, triode Q3 ends, now the grid of field effect transistor Q4 must conduct, thus drag down the current potential of the negative output terminal of switching power circuit, and then ensure that switching power circuit can be opened storage battery charging or driving fuel solenoid valve by output voltage.
In the present embodiment, also comprise auxiliary power supply circuit, described auxiliary power supply circuit comprises diode D1 and diode D2, the described positive pole of diode D1 is connected with the anode of the charge coil of fuel electric generator, the positive pole of diode D2 is connected with the negative terminal of the charge coil of fuel electric generator, diode D1 is all connected with load with the negative pole of diode D2, by this structure, can ensure the utility model steady operation.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (7)
1. one kind can low pressure input start oil-fired power generating electromechanical source, comprise switching power circuit, the input of described switching power circuit is connected with the charge coil of fuel electric generator, and output is connected with load, it is characterized in that: the output of described switching power circuit is provided with low-voltage starting circuit;
Described low-voltage starting circuit comprises switching device and for the drive circuit according to fuel electric generator charge coil output voltage driving switch break-over of device or shutoff, the input of described drive circuit is connected with the positive output end of switching power circuit, the control output end of drive circuit is connected with switching device, and the negative output terminal of switching power circuit is by switching device ground connection.
2. according to claim 1 can low pressure input start oil-fired power generating electromechanical source, it is characterized in that: described switching device is field effect transistor Q4, the drain electrode of field effect transistor Q4 is connected with the negative output terminal of switching power circuit, the source ground of field effect transistor Q4, the grid of field effect transistor Q4 is connected with drive circuit.
3. according to claim 1 or 2 can low pressure input start oil-fired power generating electromechanical source, it is characterized in that: described drive circuit comprises testing circuit and control circuit, the input of described testing circuit is connected with the positive output end of switching power circuit, the output of testing circuit is connected with the input of control circuit, and the control output end of control circuit is connected with the control input end of switching device.
4. according to claim 3 can low pressure input start oil-fired power generating electromechanical source, it is characterized in that: described testing circuit comprises resistance R21 and resistance R22, one end of described resistance R21 is connected with the positive output end of switching power circuit as the input of testing circuit, the other end of resistance R21 is by resistance R24 ground connection, and described resistance R21 is testing circuit output with the points of common connection of resistance R24 and is connected with control circuit.
5. according to claim 3 can low pressure input start oil-fired power generating electromechanical source, it is characterized in that: described control circuit comprises resistance R22, resistance R23, triode Q3 and voltage-stabiliser tube DW5, the base stage of described triode Q3 is connected with the points of common connection of resistance R21 and resistance R24, the collector electrode of triode Q3 is connected with the positive output end of switching power circuit by resistance R22, the collector electrode of triode Q3 is connected with one end of resistance R23, the other end of resistance R23 is connected with the control input end of switching device as the output of control circuit, the collector electrode of triode Q3 is connected with the negative pole of voltage-stabiliser tube DW5, the plus earth of voltage-stabiliser tube DW5.
6. according to claim 5 can low pressure input start oil-fired power generating electromechanical source, it is characterized in that: described switching power circuit comprises rectification circuit, switching circuit, control chip and voltage feedback circuit, the input of described rectification circuit is connected with the charge coil of fuel electric generator, the output of rectification circuit is connected with the input of switching circuit, the output of switching circuit is connected with load, the input of voltage feedback circuit is connected with switching circuit, output is connected with control chip, the control output end of described control chip is connected with the control end of switching circuit.
7. according to claim 6 can low pressure input start oil-fired power generating electromechanical source, it is characterized in that: also comprise auxiliary power supply circuit, described auxiliary power supply circuit comprises diode D1 and diode D2, the described positive pole of diode D1 is connected with the anode of the charge coil of fuel electric generator, the positive pole of diode D2 is connected with the negative terminal of the charge coil of fuel electric generator, and diode D1 is all connected with load with the negative pole of diode D2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945976.6U CN205105107U (en) | 2015-11-24 | 2015-11-24 | But dynamo power supply is sent out to fuel that low pressure input starts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945976.6U CN205105107U (en) | 2015-11-24 | 2015-11-24 | But dynamo power supply is sent out to fuel that low pressure input starts |
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| Publication Number | Publication Date |
|---|---|
| CN205105107U true CN205105107U (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520945976.6U Active CN205105107U (en) | 2015-11-24 | 2015-11-24 | But dynamo power supply is sent out to fuel that low pressure input starts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471290A (en) * | 2015-12-29 | 2016-04-06 | 隆鑫通用动力股份有限公司 | Variable voltage rectifier of diesel engine |
-
2015
- 2015-11-24 CN CN201520945976.6U patent/CN205105107U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471290A (en) * | 2015-12-29 | 2016-04-06 | 隆鑫通用动力股份有限公司 | Variable voltage rectifier of diesel engine |
| CN105471290B (en) * | 2015-12-29 | 2018-07-13 | 隆鑫通用动力股份有限公司 | Diesel engine variable voltage rectifier |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |