CN110034535A - Discharge equipment and its remained capacity circuit - Google Patents
Discharge equipment and its remained capacity circuit Download PDFInfo
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- CN110034535A CN110034535A CN201910246599.XA CN201910246599A CN110034535A CN 110034535 A CN110034535 A CN 110034535A CN 201910246599 A CN201910246599 A CN 201910246599A CN 110034535 A CN110034535 A CN 110034535A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load
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Abstract
This application provides a kind of discharge equipment and its remained capacity circuits.The remained capacity circuit includes: isolated power supply circuit, bleeder circuit and voltage comparator；In the case where the remained capacity circuit is in running order, the bleeder circuit is connected with the output end of the power circuit of the discharge equipment, and the output end of the bleeder circuit and the power circuit is connected to the both ends of the output voltage of the isolated power supply circuit；The bleeder circuit is for dividing the output voltage of the isolated power supply circuit, to export the first branch pressure voltage and the second branch pressure voltage；The voltage comparator is used to export high level or low level according to the comparison result of first branch pressure voltage and the second branch pressure voltage, to identify whether the output end of the power circuit accesses load.The technical program solves discharge equipment in the prior art and detects the presence of the technical issues of no-load loss can not be effectively reduced in load by power circuit always.
Description
[technical field]
The present invention relates to technical field of circuit design more particularly to a kind of discharge equipments and its remained capacity circuit.
[background technique]
In daily living habit, night people often turn off all power loads, while night may also can
Load is opened at any time.For self solar power system, if turning off load, discharge equipment (such as inverter) still exists
Work, and from the inverter that very high such as common 20KW is lost, no-load loss reaches 300W or more, and night idle running 5 is small
When waste 1.5KW electric energy, 1 year no-load loss then be up to 500KW or more, cause great energy waste.It is put if turned off
Electric equipment is needed also to need to open discharge equipment when opening load at night, then can be made troubles to using.Discharge equipment damages certainly
Consumption mostlys come from the loss of power circuit, and the 20KW inverter of 300W or more, accessory power supply and control are such as reached for no-load loss
Less than 20W, remaining loss is generated by power circuit for the loss of unit processed.
If controlled by the presence or absence of judgement load switching circuit, there was only accessory power supply and control when non-loaded
Circuit is working, and can greatly reduce loss.At present frequently with mode be normal output a period of time and according to detecting
Loading condition judged, if load be less than certain value if think not load, power circuit is then shut off, into energy conservation
Mode automatically turns on power circuit again after a certain period of time, exports normal voltage, then judged, so recycles.
Existing mode can reduce certain loss, reduce loss number with close the time of power circuit it is related,
Shut-in time is long then small from being lost, but during closing power circuit, if opening load, then load can not obtain electricity in time
Source needs power circuit work back loading that could obtain power supply, thus it is too long in order to avoid opening the waiting time after load, close function
The time of rate circuit tend not to it is too long, thus can reduce on the whole from loss be not very much.
[summary of the invention]
In view of this, the embodiment of the invention provides a kind of discharge equipment and its remained capacity circuit, it is existing to solve
Discharge equipment detects the presence of the technical issues of no-load loss can not be effectively reduced in load by power circuit always in technology.
On the one hand, the embodiment of the invention provides a kind of remained capacity circuits of discharge equipment, comprising: isolated power supply electricity
Road, bleeder circuit and voltage comparator；In the case where the remained capacity circuit is in running order, the bleeder circuit is put with described
The output end of the power circuit of electric equipment is connected, and the output end of the bleeder circuit and the power circuit be connected to it is described
The both ends of the output voltage of isolated power supply circuit；The bleeder circuit is used to carry out the output voltage of the isolated power supply circuit
Partial pressure, to export the first branch pressure voltage and the second branch pressure voltage；The voltage comparator is used for according to first branch pressure voltage
High level or low level are exported with the comparison result of the second branch pressure voltage, to identify whether the output end of the power circuit accesses
Load.
Optionally, the bleeder circuit includes first resistor, second resistance and 3rd resistor；In the remained capacity circuit
Under in running order, the second resistance is connected with the 3rd resistor to form the first bleeder circuit, the first resistor
It is connected with the output end of the power circuit of the discharge equipment to form the second bleeder circuit, and first bleeder circuit and institute
State the parallel connection of the second bleeder circuit；Wherein, first branch pressure voltage is the second resistance and 3rd resistor to the isolation electricity
The branch pressure voltage of the output voltage of source circuit, the power that second branch pressure voltage is the first resistor and the discharge equipment
Branch pressure voltage of the resistance of the output end of circuit to the output voltage of the isolated power supply circuit；Alternatively, the first partial pressure electricity
Pressure is the resistance of the first resistor and the output end of the power circuit of the discharge equipment to the defeated of the isolated power supply circuit
The branch pressure voltage of voltage, second branch pressure voltage are the second resistance and 3rd resistor to the isolated power supply circuit out
The branch pressure voltage of output voltage.
Optionally, when the output end of the power circuit does not access load, the power circuit of the discharge equipment it is defeated
The resistance of outlet is output loop ohmic leakage；When the output end of the power circuit accesses load, the function of the discharge equipment
The resistance of the output end of rate circuit is the resistance after the load is in parallel with the output loop ohmic leakage.
Optionally, the resistance value of the first resistor, the second resistance and the 3rd resistor is adjustable, and is adjusted
The resistance value of the first resistor, the second resistance and the 3rd resistor after section makes the output in the power circuit
It terminates load and does not access under both non-loaded situations, the level of the voltage comparator output is different.
Optionally, the output end of the voltage comparator is connected to the microprocessor of the discharge equipment；The voltage ratio
Compared with device, it is also used to the high level or low level that will be exported according to the comparison result of first branch pressure voltage and the second branch pressure voltage
It is sent to the microprocessor of the discharge equipment.
On the other hand, the embodiment of the invention also provides a kind of discharge equipments, comprising: power circuit and above-mentioned remained capacity
Circuit；Wherein, switching device is provided between the remained capacity circuit and the output end of the power circuit；When the switch
Device closure, the remained capacity circuit are connected with the output end of the power circuit, and the remained capacity circuit is in work
Make state so that whether the output end for identifying the power circuit accesses load；When the remained capacity circuit recognizes the power
The output end of circuit has accessed load, then the switching device disconnects, and the remained capacity circuit stops working, the power electricity
Road enters working condition.
Optionally, the discharge equipment further includes accessory power supply；The accessory power supply is used for as the micro- of the discharge equipment
The power circuit of processor and the remained capacity circuit provides power supply.
Optionally, it further includes sampling processing module that the remained capacity circuit, which further includes isolating device, the discharge equipment,；
Wherein, the isolating device is connected between the output end of the voltage comparator and the sampling processing module, the sampling
Processing module is connected to the microprocessor of the discharge equipment；The isolating device for be isolated the voltage comparator with it is described
Microprocessor.
Optionally, the isolating device is photo-coupler.
Compared with prior art, the technical program at least has the following beneficial effects:
The discharge equipment provided according to embodiments of the present invention identifies the defeated of power circuit by adding remained capacity circuit
Whether outlet accesses load, and in the case where remained capacity circuit is in running order, the power circuit of the discharge equipment is in
Closed state.When the output end that remained capacity circuit recognizes power circuit has accessed load, then remained capacity circuit stops work
Make, power circuit enters working condition.Can effectively solve so in the prior art by power circuit detect the presence of load and
According to there is non-loaded situation to open/close power dissipation concerns caused by power circuit repeatedly.
Further, remained capacity circuit provided in an embodiment of the present invention includes isolated power supply circuit, bleeder circuit and voltage
Comparator.In the case where remained capacity circuit is in running order, divided by output voltage of the bleeder circuit to power circuit
To export the first branch pressure voltage and the second branch pressure voltage, then via voltage comparator according to the first branch pressure voltage and the second partial pressure electricity
The comparison result output high level or low level of pressure, to identify whether the output end of the power circuit accesses load；Then, lead to
High level or low level are sent to microprocessor by the output end of over-voltage comparator, so that microprocessor is known in voltage comparator
When being clipped to the output end of power circuit and having accessed load, working condition is entered by driving circuit driving power circuit.
Further, due to power circuit use high voltage power supply (such as 220V), microprocessor using low-tension supply (such as
5V), in the case where providing the accessory power supply also supplying power for outside of power supply for microprocessor, in order to guarantee the safety of discharge equipment
Property, isolating device (such as photo-coupler) and sampling processing mould are set between the output end and microprocessor of voltage comparator
Block.Wherein, isolating device is for isolation voltage comparator and microprocessor so that microprocessor is kept apart with power circuit；Sampling
Processing module is sent to except microprocessor in sampling from the level that isolating device exports, and also provides power supply for isolating device.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structural schematic diagram of one embodiment of discharge equipment of the application；
Fig. 2 is a kind of structural schematic diagram of another embodiment of discharge equipment of the application；
Fig. 3 is a kind of structural schematic diagram of the further embodiment of discharge equipment of the application；
Fig. 4 is the in running order lower bleeder circuit of remained capacity circuit and power electricity of a kind of discharge equipment of the application
Schematic equivalent circuit when the output end connection on road.
[specific embodiment]
For a better understanding of the technical solution of the present invention, being retouched in detail to the embodiment of the present invention with reference to the accompanying drawing
It states.
It will be appreciated that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of structural schematic diagram of one embodiment of discharge equipment of the application.
With reference to Fig. 1, the discharge equipment 1 includes: power circuit 11, remained capacity circuit 12, microprocessor 13, auxiliary electricity
Source 14, switching device 15, output loop ohmic leakage 16, load 17, sample circuit 18 and driving circuit 19.
Specifically, when the output end of the power circuit 11 access load 17, the microprocessor 13 passes through the drive
It is that the load 17 provides operating voltage that dynamic circuit 19, which drives the power circuit 11,.The sample circuit 18 is connected to the function
Between the output end of rate circuit 11 and the microprocessor 13, for sampling voltage that the power circuit 11 exports (or electricity
Stream), and collected voltage (or electric current) is fed back into the microprocessor 13.The output end of the power circuit 11 further includes
With 17 output loop ohmic leakages 16 in parallel of the load, the output loop ohmic leakage 16 be filter capacitor ohmic leakage and its
The equivalent resistance summation (not including the resistance of the load 17) of his circuit (not shown in figure 1).
The power circuit 11 is high-tension circuit, generally uses 220V high voltage supply.The microprocessor 13 and described negative
Load identification circuit 12 is low-voltage circuit, for example, by using 5V low-voltage power supply.It is respectively the micro process by the accessory power supply 14
Device 13 and the remained capacity circuit 12 provide operating voltage.
Unlike the prior art, in the present embodiment, the remained capacity circuit is increased in the discharge equipment 1
12.Switching device 15 is provided between the remained capacity circuit 12 and the output end of the power circuit 11.In the electric discharge
In equipment normal course of operation, when the output end of the power circuit 11 does not access load 17, the power circuit is closed
11；At this point, being closed the switching device 15, the remained capacity circuit 12 is connected with the output end of the power circuit 11,
The remained capacity circuit 12 is in running order, and the output of the power circuit 11 is identified by the remained capacity circuit 12
Whether end accesses load 17.When the output end that the remained capacity circuit 12 recognizes the power circuit 11 has accessed load
17, then the switching device 15 disconnects, and the remained capacity circuit 12 stops working, and the power circuit 11 enters work shape
State.
It should be noted that in the present embodiment, not all being examined under any circumstance by the remained capacity circuit 12
Whether the output end for surveying the power circuit 11 accesses the load 17.The remained capacity circuit 12 is in the power circuit
11 are in close state down, and whether the output end that auxiliary detects the power circuit 11 accesses load 17.And when the power electricity
When road 11 enters working condition, the remained capacity circuit stops working and (disconnects the switching device 15) at this time, passes through institute
State power circuit 11 and be that the load 17 provides operating voltage, and the power circuit 11 will test current loading condition with
Judge the load whether still in electricity condition.Therefore, the power circuit 11 is cooperated by the remained capacity circuit 12
Auxiliary detection, can effectively reduce the opening time of the power circuit 11 when zero load, so that the discharge equipment 1 be effectively reduced
No-load loss.
The specific electricity of the remained capacity circuit 12 in the discharge equipment 1 is described in detail combined with specific embodiments below
Line structure.
Embodiment two
Fig. 2 is a kind of structural schematic diagram of another embodiment of discharge equipment of the application.
With reference to Fig. 2, the discharge equipment 2 includes: power circuit 201, remained capacity circuit 202, microprocessor 203, auxiliary
Help power supply 204, switching device 205, output loop ohmic leakage 206, load 207, sample circuit 208 and driving circuit 209.
On the basis of the embodiment described in Fig. 1, the present embodiment mainly provides a kind of physical circuit of remained capacity circuit
Structure.
Specifically, the remained capacity circuit 202 includes isolated power supply circuit 2021, bleeder circuit 2022 and voltage
Comparator 2023.
When the output end of the power circuit 201 does not access load 207, it is closed the switching device 205, so that institute
It is in running order to state remained capacity circuit 202.After being closed the switching device 205, the bleeder circuit 2022 with it is described
The output end of the power circuit 201 of discharge equipment 2 is connected, and the bleeder circuit 2022 and the power circuit 201 is defeated
Outlet is connected to the both ends of the output voltage of the isolated power supply circuit 2021.The bleeder circuit 2022 is used for the isolation
The output voltage of power circuit 2021 is divided, to export the first branch pressure voltage and the second branch pressure voltage, first partial pressure
Voltage and the second branch pressure voltage are respectively connected to "+the input terminal " and "-input terminal " of the voltage comparator 2023.The voltage ratio
High level or low level are exported according to the comparison result of first branch pressure voltage and the second branch pressure voltage compared with device 2023, with identification
Whether the output end of the power circuit 201 accesses the load 207.
Fig. 4 is the in running order lower bleeder circuit of remained capacity circuit and power electricity of a kind of discharge equipment of the application
Schematic equivalent circuit when the output end connection on road.
In conjunction with reference Fig. 2 and Fig. 4, the output voltage of the isolated power supply circuit 2021 is+5V.The isolated power supply circuit
The both ends of 2021 output voltage are the end+5V and ground terminal, the output end of the bleeder circuit 2022 and the power circuit 201
It is connected, and the output end of the bleeder circuit 2022 and the power circuit 201 is connected to the end+5V and ground terminal.
The bleeder circuit 2022 includes first resistor R1, second resistance R2 and 3rd resistor R3.When the derailing switch
After the closure of part 205 (under the i.e. described remained capacity circuit 202 is in running order), the second resistance R2 and the 3rd resistor
R3 series connection connected with to form the first bleeder circuit, the first resistor R1 with the output end of the power circuit of the discharge equipment with
The second bleeder circuit is formed, and first bleeder circuit is in parallel with second bleeder circuit.
When the output end of the power circuit does not access load, the electricity of the output end of the power circuit of the discharge equipment
Resistance is output loop ohmic leakage 206 (i.e. resistance Rc), and in Fig. 4, the load 207 is equivalent to open circuit, the first resistor R1
It connects with the output loop ohmic leakage 206.When the output end of the power circuit accesses load, the function of the discharge equipment
The resistance of the output end of rate circuit is the resistance after the load is in parallel with the output loop ohmic leakage, as shown in figure 4, described
Load 207 is connected with after 206 parallel connection of output loop ohmic leakage with the first resistor R1.
In Fig. 4, two branch pressure voltages are respectively Vd and Vr, and in the present embodiment, first branch pressure voltage is Vd, institute
Stating the second branch pressure voltage is Vr；Alternatively, it is Vd that first branch pressure voltage, which is Vr, second branch pressure voltage,.
Specifically, first branch pressure voltage is the second resistance R2 and 3rd resistor R3 to the isolated power supply electricity
The branch pressure voltage of the output voltage on road, second branch pressure voltage are the first resistor R1 and the power electricity of the discharge equipment
Branch pressure voltage of the resistance of the output end on road to the output voltage of the isolated power supply circuit.Alternatively, first branch pressure voltage
For the first resistor R1 and the output end of the power circuit of the discharge equipment resistance to the defeated of the isolated power supply circuit
The branch pressure voltage of voltage, second branch pressure voltage are the second resistance R2 and 3rd resistor R3 to the isolated power supply electricity out
The branch pressure voltage of the output voltage on road.
With continued reference to Fig. 4, the branch pressure voltage Vd accesses "+the input terminal " of the voltage comparator 2023, the partial pressure
Voltage Vr accesses "-the input terminal " of the voltage comparator 2023.
In the present embodiment, the resistance value of the first resistor R1, second resistance R2 and 3rd resistor R3 are variable, but
When selecting different resistance values, need to meet a condition: the selection of these three resistances will make Vd when non-loaded be greater than Vr,
The voltage comparator exports high level at this time, and after accessing load, Vd is less than Vr, at this time the voltage comparator output
Low level.Alternatively, Vd is less than Vr when non-loaded, the voltage comparator exports low level at this time, and after accessing load, Vd
It is greater than Vr, the voltage comparator exports high level at this time.That is, the selection of these three resistances to make have it is negative
It carries under both non-loaded situations, the level of the voltage comparator output is different, is just able to achieve the identification power in this way
Whether the output end of circuit has accessed load.
For example, the resistance value of first resistor R1 3rd resistor R3 equal with the resistance value of the second resistance R2, described
Resistance value can recognize that power is related to the minimum of the output end of power circuit access load 207.
Specifically, the resistance value of first resistor R1, second resistance R2 and 3rd resistor R3 are bigger, the load that can recognize
207 power are smaller.
For example, if discharge equipment is the inverter of 220V output, when R1 is 100K ohm, R2 is 100K ohm and R3
It is 100K ohm.When the remained capacity circuit 202 enters under working condition, the minimum of the load can recognize power are as follows: P=
220 × 220/100K=0.484W.It is described i.e. when load of the output end access power of the power circuit 201 greater than 0.5W
Remained capacity circuit 202 can recognize the load.
The output end of the voltage comparator 2023 is connected to the microprocessor 203 of the discharge equipment 2.The voltage ratio
The high level or low for being also used to be exported according to the comparison result of first branch pressure voltage and the second branch pressure voltage compared with device 2023
Level is sent to the microprocessor 203 of the discharge equipment 2.The microprocessor 203 is according to the high level or low electricity received
Whether the output end of the flat confirmation power circuit 201 has accessed load 207, and when the output for confirming the power circuit 201
When terminating into load 207, the power circuit 201 is driven to enter working condition by the driving circuit 209 (as described negative
Carry 207 and operating voltage be provided), and when the power circuit 201 enters working condition, disconnect the switching device 205, institute
Remained capacity circuit 202 is stated to stop working.
It should be noted that due in the present embodiment, the first resistor R1 in the bleeder circuit 2022, second
Resistance R2 and 3rd resistor R3 be it is adjustable, by mentioned earlier, different resistances makes in the power circuit 201
For output end in access load 207, the voltage comparator 2023 may export high level, it is also possible to export low level.Therefore, exist
After three resistances are adjusted, need to inform that the microprocessor 203 receives the voltage comparator 2023 and exports
Level representated by meaning, i.e., high level or low level it is corresponding be the power circuit 201 output end access it is negative
It carries 207 and does not still access load.So that the microprocessor 203 can be true according to the high level (or low level) received
Whether the output end for recognizing the power circuit 201 has accessed load 207.
Embodiment three
Fig. 3 is a kind of structural schematic diagram of the further embodiment of discharge equipment of the application.
With reference to Fig. 3, the discharge equipment 3 includes: power circuit 301, remained capacity circuit 302, microprocessor 303, auxiliary
It helps power supply 304, switching device 305, output loop ohmic leakage 306, load 307, sample circuit 308, driving circuit 309 and adopts
Sample processing module 310.
Unlike above-described embodiment two, in the present embodiment, the discharge equipment 3 further includes sampling processing module
310, the remained capacity circuit 302 is in addition to including isolated power supply circuit 3021, bleeder circuit 3022 and voltage comparator
It further include isolating device 3024 except 3023.Wherein, the isolating device 3024 is connected to the defeated of the voltage comparator 3023
Between outlet and the sampling processing module 310, the sampling processing module 310 is connected to the micro process of the discharge equipment 3
Device 303.
On the basis of above-described embodiment two, inventor is it may be further contemplated, in discharge equipment, since power circuit uses
High voltage power supply (such as 220V), microprocessor use low-tension supply (such as 5V), in the auxiliary electricity for providing power supply for microprocessor
In the case where the also supplying power for outside of source, in order to guarantee the safety of the discharge equipment, in the output end and Wei Chu of voltage comparator
Between reason device need that isolating device is arranged.
Therefore, in the present embodiment, increase the isolating device 3024 in the remained capacity circuit 302 for institute to be isolated
State voltage comparator 3023 and the microprocessor 303.Such as the isolating device 3024 can use photo-coupler.
As known to those skilled in the art, photo-coupler includes a light emitting diode and a phototriode (NPN type).
Wherein, light emitting diode generallys use insulation transparent shell as light emitting source and phototriode as light-receiving device between the two
Isolation.
The working principle of the photo-coupler is as follows:
The anode and cathode of light emitting diode apply electric signal (i.e. the high level that exports of the voltage comparator 3023 or
Low level), if application electric signal is high level, LEDs ON simultaneously issues light source, and light source is irradiated on phototriode,
So that phototriode generates electric current, ce conducting (i.e. collector c and emitter e conducting) exports low level；If applying electric signal
For low level, light emitting diode cut-off, gauge without light source is irradiated on phototriode, and phototriode cut-off is connected through resistance Rp
To+5V, high level is exported.That is, the level that the voltage comparator 3023 exports exports after the photo-coupler
Level it is opposite (i.e. high level is converted into low level, low transition into high level).
It powers since most of isolating devices (such as photo-coupler) is needed in input terminal and output end two sides, in input terminal
It is powered by isolated power supply circuit for it, is powered in output end by the sampling processing module 310 for it.At the i.e. described sampling
Reason module 310 is sent to except microprocessor 303 in sampling from the level that isolating device 3024 exports, and is also isolating device 3024
Power supply is provided.
In conclusion discharge equipment and its remained capacity circuit that the technical program provides, by increasing in discharge equipment
If remained capacity circuit is in work shape in remained capacity circuit to identify whether the output end of power circuit accesses load
Under state, the power circuit of the discharge equipment is in close state.When remained capacity circuit recognizes the output end of power circuit
Load is accessed, then remained capacity circuit stops working, and power circuit enters working condition.Existing skill can be effectively solved in this way
Load detected the presence of by power circuit in art and according to there is non-loaded situation to open/closed caused by power circuit repeatedly
Power dissipation concerns.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination " or " in response to detection ".Similarly, depend on context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when determining " or " in response to determination " or " when the detection (condition of statement
Or event) when " or " in response to detection (condition or event of statement) ".
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (9)
1. a kind of remained capacity circuit of discharge equipment, which is characterized in that the remained capacity circuit includes: isolated power supply electricity
Road, bleeder circuit and voltage comparator；
In the case where the remained capacity circuit is in running order, the bleeder circuit is defeated with the power circuit of the discharge equipment
Outlet is connected, and the output end of the bleeder circuit and the power circuit is connected to the output electricity of the isolated power supply circuit
The both ends of pressure；
The bleeder circuit for being divided to the output voltage of the isolated power supply circuit, with export the first branch pressure voltage and
Second branch pressure voltage；
The voltage comparator is used to export high level according to the comparison result of first branch pressure voltage and the second branch pressure voltage
Or low level, to identify whether the output end of the power circuit accesses load.
2. remained capacity circuit as described in claim 1, which is characterized in that the bleeder circuit includes first resistor, second
Resistance and 3rd resistor；
In the case where the remained capacity circuit is in running order, the second resistance is connected with the 3rd resistor to form first
Bleeder circuit, the first resistor are connected with the output end of the power circuit of the discharge equipment to form the second bleeder circuit,
And first bleeder circuit is in parallel with second bleeder circuit；
Wherein, first branch pressure voltage is the output voltage of the second resistance and 3rd resistor to the isolated power supply circuit
Branch pressure voltage, the power circuit that second branch pressure voltage is the first resistor and the discharge equipment output end electricity
Hinder the branch pressure voltage to the output voltage of the isolated power supply circuit；
Alternatively, first branch pressure voltage is the resistance of the output end of the power circuit of the first resistor and the discharge equipment
Branch pressure voltage, second branch pressure voltage to the output voltage of the isolated power supply circuit are the second resistance and third electricity
Hinder the branch pressure voltage to the output voltage of the isolated power supply circuit.
3. remained capacity circuit as claimed in claim 2, which is characterized in that
When the output end of the power circuit does not access load, the resistance of the output end of the power circuit of the discharge equipment is
Output loop ohmic leakage；
When the output end of the power circuit accesses load, the resistance of the output end of the power circuit of the discharge equipment is institute
State load it is in parallel with the output loop ohmic leakage after resistance.
4. remained capacity circuit as claimed in claim 2, which is characterized in that the first resistor, the second resistance and
The resistance value of the 3rd resistor is adjustable, and the first resistor, the second resistance and the third after adjusting
The resistance value of resistance makes in the case where the output end access of the power circuit loads and do not access both non-loaded situations, the electricity
Press the level of comparator output different.
5. remained capacity circuit as described in claim 1, which is characterized in that the output end of the voltage comparator is connected to institute
State the microprocessor of discharge equipment；
The voltage comparator is also used to be exported according to the comparison result of first branch pressure voltage and the second branch pressure voltage
High level or low level are sent to the microprocessor of the discharge equipment.
6. a kind of discharge equipment, which is characterized in that including power circuit and remained capacity described in any one of claim 1 to 5
Circuit；Wherein, switching device is provided between the remained capacity circuit and the output end of the power circuit；
When the switching device is closed, the remained capacity circuit is connected with the output end of the power circuit, the load
Whether identification circuit is in running order accesses load with the output end for identifying the power circuit；
When the output end that the remained capacity circuit recognizes the power circuit has accessed load, then the switching device is disconnected
It opens, the remained capacity circuit stops working, and the power circuit enters working condition.
7. discharge equipment as claimed in claim 6, which is characterized in that the discharge equipment further includes accessory power supply；It is described auxiliary
Help power supply for providing power supply for the microprocessor of the discharge equipment and the power circuit of the remained capacity circuit.
8. discharge equipment as claimed in claim 6, which is characterized in that the remained capacity circuit further includes isolating device, institute
Stating discharge equipment further includes sampling processing module；Wherein, the isolating device be connected to the output end of the voltage comparator with
Between the sampling processing module, the sampling processing module is connected to the microprocessor of the discharge equipment；The isolator
Part is for being isolated the voltage comparator and the microprocessor.
9. discharge equipment as claimed in claim 6, which is characterized in that the isolating device is photo-coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246599.XA CN110034535A (en) | 2019-03-29 | 2019-03-29 | Discharge equipment and its remained capacity circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246599.XA CN110034535A (en) | 2019-03-29 | 2019-03-29 | Discharge equipment and its remained capacity circuit |
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| DE3909064A1 (en) * | 1989-03-20 | 1990-09-27 | Poelzl Helmut | Mains isolator |
| CN101674026A (en) * | 2009-10-12 | 2010-03-17 | 华南理工大学 | Low standby loss control circuit of switching power supply capable of automatically detecting load |
| US20130082742A1 (en) * | 2011-06-30 | 2013-04-04 | Chengdu Monolithic Power Systems Co., Ltd. | Load detecting circuits and the method thereof |
| CN103605035A (en) * | 2013-12-02 | 2014-02-26 | 绍兴光大芯业微电子有限公司 | No-load detection circuit structure of self-adaptive switching power supply |
| CN105871221A (en) * | 2016-03-25 | 2016-08-17 | 中山市尊宝实业有限公司 | Transformer system with low no-load loss |
| CN206848381U (en) * | 2017-04-26 | 2018-01-05 | 常州市派腾电子技术服务有限公司 | Load detecting circuit and its Weight detector |
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2019
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3909064A1 (en) * | 1989-03-20 | 1990-09-27 | Poelzl Helmut | Mains isolator |
| CN101674026A (en) * | 2009-10-12 | 2010-03-17 | 华南理工大学 | Low standby loss control circuit of switching power supply capable of automatically detecting load |
| US20130082742A1 (en) * | 2011-06-30 | 2013-04-04 | Chengdu Monolithic Power Systems Co., Ltd. | Load detecting circuits and the method thereof |
| CN103605035A (en) * | 2013-12-02 | 2014-02-26 | 绍兴光大芯业微电子有限公司 | No-load detection circuit structure of self-adaptive switching power supply |
| CN105871221A (en) * | 2016-03-25 | 2016-08-17 | 中山市尊宝实业有限公司 | Transformer system with low no-load loss |
| CN206848381U (en) * | 2017-04-26 | 2018-01-05 | 常州市派腾电子技术服务有限公司 | Load detecting circuit and its Weight detector |
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Application publication date: 20190719 |