CN206461404U - Super capacitor charging circuit and its transient state recording type fault detector being made - Google Patents
Super capacitor charging circuit and its transient state recording type fault detector being made Download PDFInfo
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- CN206461404U CN206461404U CN201720184980.4U CN201720184980U CN206461404U CN 206461404 U CN206461404 U CN 206461404U CN 201720184980 U CN201720184980 U CN 201720184980U CN 206461404 U CN206461404 U CN 206461404U
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Abstract
The utility model discloses a kind of super capacitor charging circuit, including reference voltage circuit, voltage sampling circuit, subtraction circuit and switching tube module；Current transformer is charged by switching tube module for super capacitor；Voltage sampling circuit sampling current transformer output voltage simultaneously inputs subtraction circuit；Subtraction circuit produces control signal controlling switch pipe die group after the reference voltage signal that sampled signal and reference voltage circuit are provided is subtracted each other and worked, so as to control the charging of super capacitor.The invention also discloses the transient state recording type fault detector including the super capacitor charging circuit.The utility model realizes the electrodeless charging of super capacitor, and according to the size of the load capacity of current transformer control charging current, charge efficiency is high.
Description
Technical field
The transient state recording type fault detector that the utility model is specifically related to a kind of super capacitor charging circuit and its is made.
Background technology
With the uninterrupted power supply requirement of the development and the improvement of people's living standards of economic technology, electrically or electronically equipment
Also it is more and more.And multiple feed technology has been obtained for extensive development and answered as the core technology of uninterrupted power supply
With.And super capacitor with its power density height, service life length, operating temperature range is wide the advantages of, once release just receive
The extensive favor of people, firmly occupies the position of stand-by power supply in multiple feed technology.
There is substantial amounts of data to study the charge-discharge circuit of super capacitor now.But, prior art base
This is all to control charging current by way of resistance is divided to two grades or more multi gear, and gear first is limited, it is impossible to according to CT
（Current transformer）The electric energy size of offer adjusts charging current in real time, and the more circuits of gear are more complicated；And
System for current transformer power supply either can all cause the utilization of electric energy using constant-current charge or constant voltage mode charging
Unreasonable, under small primary current, the electric energy that current transformer is got sometimes just maintains system operation, now opens and fills
Electricity will cause system power not enough；Finally, prior art can not accurately judge when current transformer is having unnecessary
Energy is used for charging.
Utility model content
One of the purpose of this utility model be provide it is a kind of can be realized according to the load capacity of current transformer it is super
The electrodeless charging of electric capacity and the high super capacitor charging circuit of charge efficiency.
The two of the purpose of this utility model are that provide a kind of application super capacitor charging circuit fills for super capacitor
The transient state recording type fault detector of electricity.
This super capacitor charging circuit that the utility model is provided, including reference voltage circuit, voltage sampling circuit, subtract
Adder circuit and switching tube module；The electric energy of current transformer output connects super capacitor after over commutation by switching tube module
And be super capacitor charging；Current transformer output voltage after voltage sampling circuit sampling rectification, and sampled signal is inputted
To subtraction circuit；Subtraction circuit produces control after the reference voltage signal that sampled signal and reference voltage circuit are provided is subtracted each other
Signal-controlled switch pipe die group processed being opened and turning off, so that the charging to super capacitor is controlled.
Described switching tube module includes driving switch pipe and charge switch pipe；The movable end connection rectification of charge switch pipe
Current transformer output end afterwards and super capacitor；The control end and ground of the movable end connection charge switch pipe of driving switch pipe；
The control end of driving switch pipe connects the output end of subtraction circuit.
Terminal voltage value of the reference voltage value that described reference voltage circuit is provided for super capacitor when fully charged.
Described super capacitor charging circuit also includes mu balanced circuit；Voltage sampling circuit connects rectification by mu balanced circuit
Current transformer output end afterwards；Mu balanced circuit is used to carry out voltage stabilizing to the current transformer output voltage after rectification.
Described mu balanced circuit is diode and electric capacity；Diode is serially connected in the signal output of the current transformer after rectification
End, for isolating exchange noise signal；Capacitance connection is between the negative electrode and ground of diode, for filtering.
Described super capacitor charging circuit also includes overcharge protection circuit；Overcharge protection circuit be connected to super capacitor and
Between driving switch pipe, the terminal voltage for detecting super capacitor, and send when terminal voltage reaches setting value control signal control
The work of driving switch pipe processed, so as to stop charging for super capacitor.
Described overcharge protection circuit includes voltage sampling circuit and comparator circuit；Voltage sampling circuit is super for sampling
The terminal voltage of level electric capacity, and by sampled signal input comparator circuit；Comparator circuit is according to the super capacitor terminal voltage of sampling
The size output control signal of signal and voltage setting value controls the work of driving switch pipe.
The reference voltage that potential circuit is provided on the basis of described voltage setting value.
Described super capacitor charging circuit also includes low consumption circuit.Low consumption circuit is connected to subtraction circuit and mistake
The output end of protection circuit is filled, the power consumption for reducing circuit.
Described low consumption circuit is diode；The anode connection driving switch pipe of diode, the negative electrode connection of diode
The output end of subtraction circuit or the output end of comparator circuit.
The utility model additionally provides a kind of transient state recording type fault detector, and the transient state recording type fault detector is used
Super capacitor charging circuit described above is that the super capacitor in transient state recording type fault detector is charged.
This super capacitor charging circuit that the utility model is provided, by the load capacity for detecting current transformer（I.e.
The output signal size of current transformer）, and load capacity according to current transformer and the magnitude of voltage control that is previously set are super
The size of the charging current of level electric capacity, it is achieved thereby that the electrodeless charging of super capacitor, and according to the load of current transformer
The size of capability control charging current so that circuit charge efficiency of the present utility model is high.
Brief description of the drawings
Fig. 1 is the functional block diagram of charging circuit of the present utility model.
Fig. 2 is the circuit theory diagrams of charging circuit of the present utility model.
Embodiment
It is the functional block diagram of charging circuit of the present utility model as shown in Figure 1：It is this super that the utility model is provided
Capacitor charging circuit, including it is reference voltage circuit, voltage sampling circuit, subtraction circuit, switching tube module, mu balanced circuit, low
Power digital circuit and overcharge protection circuit；The electric energy of current transformer output connects super electricity after over commutation by switching tube module
Hold and be super capacitor charging；Current transformer output voltage after voltage sampling circuit sampling rectification, and sampled signal is defeated
Enter to subtraction circuit；Subtraction circuit is produced after the reference voltage signal that sampled signal and reference voltage circuit are provided is subtracted each other
Control signal controlling switch pipe die group being opened and turning off, so that the charging to super capacitor is controlled；Voltage sampling circuit
Current transformer output end after rectification is connected by mu balanced circuit；Mu balanced circuit is used to export the current transformer after rectification
Voltage carries out voltage stabilizing；Overcharge protection circuit is connected between super capacitor and driving switch pipe, the end for detecting super capacitor
Voltage, and the work that control signal controls driving switch pipe is sent when terminal voltage reaches setting value, so as to stop as super electricity
Capacity charge；Low consumption circuit is connected to the output end of subtraction circuit and overcharge protection circuit, the power consumption for reducing circuit.
It is illustrated in figure 2 the circuit theory diagrams of charging circuit of the present utility model：In figure mu balanced circuit by diode D33 and
Electric capacity C3 is constituted；Voltage sampling circuit is made up of resistance R51 and R139；Subtraction circuit by amplifier U16 and resistance R57, R56,
R55, R59 and electric capacity C51, C46 are constituted；Reference voltage circuit is made up of voltage chips U19 and electric capacity C88, C45, according to required
The difference for the reference voltage wanted, voltage chips U19 model is also different；Low consumption circuit is made up of diode D32 and D23；Cross
Protection circuit is filled by voltage sampling circuit（Resistance R34 and R140）, comparator chip U18 and filter capacitor C47 constitute；Electric capacity
C44 is super capacitor；Switching tube module includes driving switch pipe V8 and starting switch pipe V16, and current-limiting resistance R65.
VDD1 in circuit is voltage signal of the power taking current transformer after over commutation, and VDD1 passes through D33 and C3 work
With so that voltage is more steady, is connected to operational amplifier U16 3 pin after R51 and R139 partial pressure afterwards, and U16
Four pin be connected to resistance R56 and R55, resistance R56 is connected to reference voltage VREF_1P2, R55 and is connected to operational amplifier U16's again
The pin of output end 1.R51 and R139 mainly set the initiation of charge voltage of super capacitor, and this voltage is according to system nominal voltage
Depending on；Operational amplifier U16 constitutes a subtracter herein, VDD1 is subtracted after partial pressure reference voltage VREF_1P2,
And the magnitude of voltage after subtracting each other is exported in 1 pin, the magnitude of voltage of output is followed by metal-oxide-semiconductor V8 1 pin by D32.When a side line
Road electric current increase, the electric energy that current transformer is got is also increased as, and this when, current transformer was except provide abundance
The electric energy being had more outside system operation electric energy can cause VDD1 to raise, while U16 output starts to increase therewith, when voltage increases to one
Determine degree, V8 departs from cut-off region, variable resistor area of entering, similarly metal-oxide-semiconductor V16 also enters variable resistor area with V8 change,
Now current transformer is charged by V16 equivalent resistance to super capacitor；When current transformer power taking is enough, V
16 enter saturation region, and now V16 is directly opened, and current transformer carries out straight-through charging to super capacitor by switching tube.
By U16, V16, V8 collective effect, after VDD1 voltages exceed system voltage, with the continuation of VDD1 voltages
Increase, current transformer obtains unnecessary electric energy and starts to charge to super capacitor, and current transformer power taking is more, charges more,
Charging process electric current is smooth increase, and is electrodeless charging, so punching will not be caused to system voltage by opening in charging process
Hit and then drag down system power supply.
Comparator U18 here functions as the effect for overcharging protection, and the voltage of super capacitor is after R34 and R140 partial pressure
Comparator U18 4 pin are connected to, U18 three pin are connected to reference voltage VREF_1P2, when the voltage that super capacitor charges reaches setting
After voltage, comparator U18 output switching activity exports low level, so as to drag down a V8 pin so that V8 enters cut-off region, accordingly
V16 enter cut-off region, stop the charging of super capacitor.
Diode D32 and D23 here function as the processing of low-power consumption, either operational amplifier or comparator, if
Recommending output mode pattern, when export high level when, if in addition on one side export be low level, will result in the increase of power consumption,
This is impermissible under low-power dissipation system, so each output one diode of reversal connection, reaches the purpose of reduction power consumption.
This super capacitor charging circuit that the utility model is provided, it is adaptable to all to be used as standby electricity by the use of super capacitor
The Electrical and Electronic equipment in source, including but not limited to all types of measuring instruments（Such as electric energy meter, water meter, gas meter, flow meter, calorimeter
Deng）, electric energy management terminal, distribution terminal, electric energy quality monitoring equipment, grid automation terminal, acquisition terminal, concentrator, number
According to collector, measuring instrument, write by hand device, plain edition fault detector and transient state recording type fault detector etc..
Claims (9)
1. a kind of super capacitor charging circuit, it is characterised in that including reference voltage circuit, voltage sampling circuit, subtraction circuit
With switching tube module；The electric energy of current transformer output connects super capacitor by switching tube module after over commutation and is super
Electric capacity charges；Current transformer output voltage after voltage sampling circuit sampling rectification, and sampled signal is input to subtracter
Circuit；Subtraction circuit produces control signal control after the reference voltage signal that sampled signal and reference voltage circuit are provided is subtracted each other
Switching tube module processed being opened and turning off, so that the charging to super capacitor is controlled.
2. super capacitor charging circuit according to claim 1, it is characterised in that described switching tube module includes driving
Switching tube and charge switch pipe；Current transformer output end and super capacitor after the movable end connection rectification of charge switch pipe；
The control end and ground of the movable end connection charge switch pipe of driving switch pipe；The control end connection subtraction circuit of driving switch pipe
Output end.
3. super capacitor charging circuit according to claim 1, it is characterised in that what described reference voltage circuit was provided
Reference voltage value is terminal voltage value when super capacitor is fully charged.
4. the super capacitor charging circuit according to one of claim 1 ~ 3, it is characterised in that described super capacitor charging
Circuit also includes mu balanced circuit；Voltage sampling circuit connects the current transformer output end after rectification by mu balanced circuit；Voltage stabilizing
Circuit is used to carry out voltage stabilizing to the current transformer output voltage after rectification；Mu balanced circuit is diode and electric capacity；Diode string
The signal output part of the current transformer after rectification is connected on, for isolating exchange noise signal；The moon of capacitance connection in diode
Between pole and ground, for filtering.
5. the super capacitor charging circuit according to one of claim 1 ~ 3, it is characterised in that also including overcharge protection circuit；
Overcharge protection circuit is connected between super capacitor and driving switch pipe, the terminal voltage for detecting super capacitor, and in end electricity
Pressure sends control signal and controls the work of driving switch pipe when reaching setting value, so as to stop charging for super capacitor.
6. super capacitor charging circuit according to claim 5, it is characterised in that described overcharge protection circuit includes electricity
Press sample circuit and comparator circuit；Terminal voltage of the voltage sampling circuit for super capacitor of sampling, and sampled signal is inputted
Comparator circuit；Comparator circuit is believed according to the super capacitor terminal voltage signal of sampling and the size output control of voltage setting value
Number control driving switch pipe work.
7. the super capacitor charging circuit according to one of claim 1 ~ 3, it is characterised in that described voltage setting value is
The reference voltage that reference voltage circuit is provided.
8. the super capacitor charging circuit according to one of claim 1 ~ 3, it is characterised in that described super capacitor charging
Circuit also includes low consumption circuit；
Low consumption circuit is connected to the output end of subtraction circuit and overcharge protection circuit, the power consumption for reducing circuit.
9. a kind of transient state recording type fault detector, including super capacitor, it is characterised in that also including described in claim 1 ~ 8
Super capacitor charging circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720184980.4U CN206461404U (en) | 2017-02-28 | 2017-02-28 | Super capacitor charging circuit and its transient state recording type fault detector being made |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720184980.4U CN206461404U (en) | 2017-02-28 | 2017-02-28 | Super capacitor charging circuit and its transient state recording type fault detector being made |
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|---|---|
| CN206461404U true CN206461404U (en) | 2017-09-01 |
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| CN201720184980.4U Active CN206461404U (en) | 2017-02-28 | 2017-02-28 | Super capacitor charging circuit and its transient state recording type fault detector being made |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787006A (en) * | 2017-02-28 | 2017-05-31 | 威胜电气有限公司 | Super capacitor charging circuit, charging method and its transient state record wave mode fault detector |
| CN109004730A (en) * | 2018-09-07 | 2018-12-14 | 北京智芯微电子科技有限公司 | The super capacitor charging system of fault detector and its charging method of use |
-
2017
- 2017-02-28 CN CN201720184980.4U patent/CN206461404U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787006A (en) * | 2017-02-28 | 2017-05-31 | 威胜电气有限公司 | Super capacitor charging circuit, charging method and its transient state record wave mode fault detector |
| CN109004730A (en) * | 2018-09-07 | 2018-12-14 | 北京智芯微电子科技有限公司 | The super capacitor charging system of fault detector and its charging method of use |
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| CP03 | Change of name, title or address |
Address after: 411201 28 Bai Shi Road, Jing Kai District, Xiangtan, Hunan Patentee after: Weisheng Energy Technology Co.,Ltd. Address before: 411201 No. 28 Baishi Road, Economic Development Zone, Xiangtan City, Hunan Province Patentee before: WASION ELECTRIC Co.,Ltd. |