CN106998149A - Power circuit, method of supplying power to and its measuring instrument being made - Google Patents
Power circuit, method of supplying power to and its measuring instrument being made Download PDFInfo
- Publication number
- CN106998149A CN106998149A CN201710367976.6A CN201710367976A CN106998149A CN 106998149 A CN106998149 A CN 106998149A CN 201710367976 A CN201710367976 A CN 201710367976A CN 106998149 A CN106998149 A CN 106998149A
- Authority
- CN
- China
- Prior art keywords
- power
- circuit
- power supply
- electrochemical capacitor
- circuits
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
Abstract
A kind of power circuit, including civil power input module, Surge suppression and EMC circuits, rectification circuit, the first electrochemical capacitor, the second electrochemical capacitor, discharge resistance, power conversion circuit, feedback circuit, power supply current-limiting resistance, VCC power supply circuits and output circuit；City is electrically accessed civil power input module, and electric energy is exported by above-mentioned module, and the inputs of VCC power supply circuits is connected between the first electrochemical capacitor and the second electrochemical capacitor power taking by current-limiting resistance and provides startup power supply.Present invention also offers the method for supplying power to of power circuit, including obtain civil power；To input power translation circuit after city's electric protection, rectifying and wave-filtering；Simultaneously startup power translation circuit is converted and exported the power taking of VCC power supply circuits；Feedback circuit feeds back.Present invention also offers the measuring instrument for including the power circuit and method of supplying power to.Present invention reduces the requirement of the voltage stress of VCC power supply circuits, while also improving the reliability of circuit, and the space of PCB is also a saving accordingly.
Description
Technical field
Present invention relates particularly to a kind of power circuit, method of supplying power to and its measuring instrument being made.
Background technology
With the development and the improvement of people's living standards of national economy technology, the miniaturization of measuring instrument and reliabilization are set
Meter has become one of developing direction of measuring instrument.
The power circuit of the measuring instrument of external civil power traditional at present inputs mould as shown in figure 1, it mainly includes civil power
Block, Surge suppression and EMC circuits, rectification circuit, the first electrochemical capacitor CE1, the second electrochemical capacitor CE2, discharge resistance R1 ~ R4,
Power conversion circuit, feedback circuit, power supply current-limiting resistance R14 ~ R17, VCC power supply circuit and output circuit；City is electrically accessed civil power
After input module, the suppression of surging signal is carried out by Surge suppression and EMC circuits and EMC circuits carry out electromagnetic compatibility protection,
Then again by rectifier circuit rectifies be direct current, then the direct current after rectification filtered by the first and second electrochemical capacitors
Power conversion circuit is input to after ripple and carries out power conversion, then passes through output circuit output signal；Feedback circuit is defeated for sampling
Go out the output signal of circuit and feed back to power conversion circuit, VCC power supply circuits pass through from the output cathode power taking of rectification circuit
The resistance of several series connection（Diagram resistance is R14 ~ R17）After current limliting, startup power supply is provided for power conversion circuit；Resistance R1 ~
R4 is the discharge resistance of the first and second electrochemical capacitors, the energy stored on the first and second electrochemical capacitors of releasing in time.
But, current power circuit is, from the direct power taking of rectification circuit output end, therefore to lead due to its VCC power supply circuit
Cause its power taking voltage higher so that the voltage stress of VCC power supply circuits is higher, it is larger to the reliability effect of VCC power supply circuits.
The content of the invention
An object of the present invention is to provide that a kind of voltage stress is small, the reliable power circuit of circuit stability.
The second object of the present invention is to provide a kind of method of supplying power to of the power circuit.
The third object of the present invention is to provide a kind of metering being made including the power circuit and method of supplying power to
Instrument.
This power circuit that the present invention is provided, including civil power input module, Surge suppression and EMC circuits, rectification
Circuit, the first electrochemical capacitor, the second electrochemical capacitor, discharge resistance, power conversion circuit, feedback circuit, power supply current-limiting resistance,
VCC power supply circuits and output circuit；City is electrically accessed after civil power input module, and surge letter is carried out by Surge suppression and EMC circuits
Number suppression and EMC circuits carry out electromagnetic compatibility protection, then again by rectifier circuit rectifies be direct current, the direct current after rectification
Electricity is input to power conversion circuit and carries out power conversion after being filtered by the first and second electrochemical capacitors, then defeated by output circuit
Go out signal；Feedback circuit be used for sample output circuit output signal and feed back to power conversion circuit, discharge resistance is connected in parallel on
Electrochemical capacitor module two ends, the energy stored on electrochemical capacitor of releasing, the input of VCC power supply circuits passes through current-limiting resistance
It is connected between the first electrochemical capacitor and the second electrochemical capacitor and power taking, so as to provide startup power supply for power conversion circuit.
Present invention also offers the method for supplying power to of the power circuit, comprise the following steps：
S1. mains supply is obtained；
S2. the mains supply of acquisition is filtered successively, surge protection and EMC are protected；
S3. the power supply signal after protection is subjected to rectification, so as to obtain high-voltage DC power supply；
S4. after obtained high-voltage DC power supply is filtered using the electrochemical capacitor of two concatenations, then input power conversion electricity
Road；
S5. VCC power supply circuits from power taking between two electrochemical capacitors of concatenation and provide startup power supply for power conversion circuit；
S6. high-voltage DC power supply is transformed to direct current energy after starting and exported by output circuit by power conversion circuit；
S7. feedback circuit sampling output circuit output voltage signal and feed back to power conversion circuit so that complete output electricity
The closed-loop control of pressure.
Present invention also offers the measuring instrument that the application power circuit and method of supplying power to are made.
This power circuit, method of supplying power to and its measuring instrument being made that the present invention is provided, by will be original
The high voltage dc bus that the position to take power of VCC power supply circuits is exported from rectification circuit is changed between two electrochemical capacitors, therefore
The voltage stress requirement of VCC power supply circuits is reduced well, while also improving the reliability of circuit, and is also saved accordingly
The about space of PCB.
Brief description of the drawings
Fig. 1 is the circuit diagram of existing measuring instrument power circuit.
The circuit diagram for the measuring instrument power circuit that Fig. 2 provides for the present invention.
The schematic flow sheet of the method for supplying power to for the measuring instrument power circuit that Fig. 3 provides for the present invention.
Embodiment
It is illustrated in figure 2 the circuit diagram for the measuring instrument power circuit that the present invention is provided：It is this that the present invention is provided
Power circuit, including civil power input module, Surge suppression and EMC circuits, rectification circuit, the first electrochemical capacitor CE1, second
Electrochemical capacitor CE2, discharge resistance R1 ~ R4, power conversion circuit, feedback circuit, power supply current-limiting resistance R16 ~ R17, VCC power electricity
Road and output circuit；City is electrically accessed after civil power input module, by Surge suppression and EMC circuits carry out surging signal suppression and
EMC circuits carry out electromagnetic compatibility protection, by rectifier circuit rectifies are again then direct current, the direct current after rectification passes through first
Power conversion is carried out with power conversion circuit is input to after the filtering of the second electrochemical capacitor, then passes through output circuit output signal；Instead
Current feed circuit be used for sample output circuit output signal and feed back to power conversion circuit, discharge resistance is connected in parallel on electrochemical capacitor mould
Group two ends, the energy stored on electrochemical capacitor of releasing, the input of VCC power supply circuits is connected to first by current-limiting resistance
Simultaneously power taking between electrochemical capacitor and the second electrochemical capacitor, so as to provide startup power supply for power conversion circuit.
This new power circuit that the present invention is provided, by the position to take power of VCC power supply circuits by original rectification circuit
Become, in the centre of two electrochemical capacitors, VCC power supply circuits can be so reduced well on the dc bus of output end
Voltage stress requirement, while also improving the reliability of circuit, and saves cost and PCB space.
In addition, this power circuit that the present invention is provided, available for the electronic equipment of any required power circuit, bag
Include all types of measuring instruments（Such as electric energy meter, water meter, gas meter, flow meter, calorimeter etc.）, electric energy management terminal, distribution terminal, electricity
Can quality monitoring instrument, grid automation terminal, acquisition terminal, concentrator, data acquisition unit, measuring instrument, write by hand device, failure
Indicator etc..
It is illustrated in figure 3 the schematic flow sheet of the method for supplying power to for the measuring instrument power circuit that the present invention is provided：The present invention
The method of supplying power to of this power circuit provided, comprises the following steps：
S1. mains supply is obtained；
S2. the mains supply of acquisition is filtered successively, surge protection and EMC are protected；
S3. the power supply signal after protection is subjected to rectification, so as to obtain high-voltage DC power supply；
S4. after obtained high-voltage DC power supply is filtered using the electrochemical capacitor of two concatenations, then input power conversion electricity
Road；
S5. VCC power supply circuits from power taking between two electrochemical capacitors of concatenation and provide startup power supply for power conversion circuit；
S6. high-voltage DC power supply is transformed to direct current energy after starting and exported by output circuit by power conversion circuit；
S7. feedback circuit sampling output circuit output voltage signal and feed back to power conversion circuit so that complete output electricity
The closed-loop control of pressure.
Claims (3)
1. a kind of power circuit, including civil power input module, Surge suppression and EMC circuits, rectification circuit, the first electrolysis electricity
Appearance, the second electrochemical capacitor, discharge resistance, power conversion circuit, feedback circuit, power supply current-limiting resistance, VCC power supply circuits and output
Circuit；City is electrically accessed after civil power input module, and suppression and the EMC circuits of surging signal are carried out by Surge suppression and EMC circuits
Electromagnetic compatibility protection is carried out, by rectifier circuit rectifies is again then direct current, the direct current after rectification passes through first and second
Power conversion circuit is input to after electrochemical capacitor filtering and carries out power conversion, then passes through output circuit output signal, feedback circuit
For output circuit of sampling output signal and feed back to power conversion circuit, discharge resistance is connected in parallel on electrochemical capacitor module two
End, the energy stored on electrochemical capacitor of releasing, it is characterised in that the input of VCC power supply circuits is connected by current-limiting resistance
The simultaneously power taking between the first electrochemical capacitor and the second electrochemical capacitor, so as to provide startup power supply for power conversion circuit.
2. a kind of method of supplying power to of the power circuit described in claim 1, comprises the following steps：
S1. mains supply is obtained；
S2. the mains supply of acquisition is filtered successively, surge protection and EMC are protected；
S3. the power supply signal after protection is subjected to rectification, so as to obtain high-voltage DC power supply；
S4. after obtained high-voltage DC power supply is filtered using the electrochemical capacitor of two concatenations, then input power conversion electricity
Road；
S5. VCC power supply circuits from power taking between two electrochemical capacitors of concatenation and provide startup power supply for power conversion circuit；
S6. high-voltage DC power supply is transformed to direct current energy after starting and exported by output circuit by power conversion circuit；
S7. feedback circuit sampling output circuit output voltage signal and feed back to power conversion circuit so that complete output electricity
The closed-loop control of pressure.
3. a kind of measuring instrument, it is characterised in that including power circuit described in claim 1 and the confession described in claim 2
Method for electrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367976.6A CN106998149A (en) | 2017-05-23 | 2017-05-23 | Power circuit, method of supplying power to and its measuring instrument being made |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367976.6A CN106998149A (en) | 2017-05-23 | 2017-05-23 | Power circuit, method of supplying power to and its measuring instrument being made |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106998149A true CN106998149A (en) | 2017-08-01 |
Family
ID=59435906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710367976.6A Pending CN106998149A (en) | 2017-05-23 | 2017-05-23 | Power circuit, method of supplying power to and its measuring instrument being made |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106998149A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0898556A (en) * | 1994-09-19 | 1996-04-12 | Meidensha Corp | Power supply circuit for control of power conversion apparatus |
| US20020145410A1 (en) * | 2001-03-09 | 2002-10-10 | Stmicroelectronics S.R.L. | Supply circuit for an electronic circuit connected to an SMPS converter operating at low output voltage |
| CN201378731Y (en) * | 2009-03-20 | 2010-01-06 | 长沙威胜信息技术有限公司 | Overvoltage suppressing and self-recovery circuit |
| CN102026448A (en) * | 2010-11-01 | 2011-04-20 | 王子能 | LED power circuit |
| CN102694473A (en) * | 2011-03-21 | 2012-09-26 | 国琏电子（上海）有限公司 | Power supply system |
| CN103728887A (en) * | 2012-10-10 | 2014-04-16 | 天津赛思科技发展有限公司 | Electricity-larceny-preventing controller |
| CN204089583U (en) * | 2014-10-30 | 2015-01-07 | 河北申科电子股份有限公司 | A kind of low-power high-voltage Switching Power Supply start-up circuit |
| CN204761146U (en) * | 2015-07-02 | 2015-11-11 | 深圳市金威源科技股份有限公司 | Bimodulus power supply |
| CN204928585U (en) * | 2015-09-29 | 2015-12-30 | 宁波龙源照明电器有限公司 | High PF value is turned over and is swashed topological circuit with overvoltage protection |
| CN106452041A (en) * | 2016-11-01 | 2017-02-22 | 苏州锴威特半导体有限公司 | Power supply circuit for AC-DC switching power supply and achieving high-voltage rapid start through PowerMOS pipe |
| CN206790365U (en) * | 2017-05-23 | 2017-12-22 | 湖南晟和电源科技有限公司 | Power circuit and its manufactured measuring instrument |
-
2017
- 2017-05-23 CN CN201710367976.6A patent/CN106998149A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0898556A (en) * | 1994-09-19 | 1996-04-12 | Meidensha Corp | Power supply circuit for control of power conversion apparatus |
| US20020145410A1 (en) * | 2001-03-09 | 2002-10-10 | Stmicroelectronics S.R.L. | Supply circuit for an electronic circuit connected to an SMPS converter operating at low output voltage |
| CN201378731Y (en) * | 2009-03-20 | 2010-01-06 | 长沙威胜信息技术有限公司 | Overvoltage suppressing and self-recovery circuit |
| CN102026448A (en) * | 2010-11-01 | 2011-04-20 | 王子能 | LED power circuit |
| CN102694473A (en) * | 2011-03-21 | 2012-09-26 | 国琏电子（上海）有限公司 | Power supply system |
| CN103728887A (en) * | 2012-10-10 | 2014-04-16 | 天津赛思科技发展有限公司 | Electricity-larceny-preventing controller |
| CN204089583U (en) * | 2014-10-30 | 2015-01-07 | 河北申科电子股份有限公司 | A kind of low-power high-voltage Switching Power Supply start-up circuit |
| CN204761146U (en) * | 2015-07-02 | 2015-11-11 | 深圳市金威源科技股份有限公司 | Bimodulus power supply |
| CN204928585U (en) * | 2015-09-29 | 2015-12-30 | 宁波龙源照明电器有限公司 | High PF value is turned over and is swashed topological circuit with overvoltage protection |
| CN106452041A (en) * | 2016-11-01 | 2017-02-22 | 苏州锴威特半导体有限公司 | Power supply circuit for AC-DC switching power supply and achieving high-voltage rapid start through PowerMOS pipe |
| CN206790365U (en) * | 2017-05-23 | 2017-12-22 | 湖南晟和电源科技有限公司 | Power circuit and its manufactured measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: The two phase of the project wasion Technology Park No. 468 Tongzi high tech Development Zone, Hunan province Changsha road 410205 No. 11 building 101 floor No. 1-8 Applicant after: Hunan Sheng he Power Technology Co., Ltd. Address before: 410003, Changsha, Yuelu District, silver basin Ling Ling Street, No. 359 South Road, No., No. two, 1-5 Applicant before: Hunan Sheng and Electronic Technology Co. Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: The two phase of the project wasion Technology Park No. 468 Tongzi high tech Development Zone in Hunan province Changsha slope 410205 West Road No. 11 building 101 floor No. 1-8 Applicant after: Hunan Sheng he Power Technology Co., Ltd. Address before: The two phase of the project wasion Technology Park No. 468 Tongzi high tech Development Zone, Hunan province Changsha road 410205 No. 11 building 101 floor No. 1-8 Applicant before: Hunan Sheng he Power Technology Co., Ltd. |