CN201846124U - Electricity meter and power supply circuit of electricity meter - Google Patents
Electricity meter and power supply circuit of electricity meter Download PDFInfo
- Publication number
- CN201846124U CN201846124U CN2010202315198U CN201020231519U CN201846124U CN 201846124 U CN201846124 U CN 201846124U CN 2010202315198 U CN2010202315198 U CN 2010202315198U CN 201020231519 U CN201020231519 U CN 201020231519U CN 201846124 U CN201846124 U CN 201846124U
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- switch element
- electric energy
- energy meter
- battery
- divider resistance
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model provides an electricity meter and a power supply circuit of the electricity meter, belonging to the technical field of electronic instruments. The power supply circuit of the electricity meter comprises a battery supply, a voltage division unit and a switch element. In the utility model, the switch element is arranged in the power supply circuit of the electricity meter, the battery supply is connected by the switch element for supplying the control unit of the electricity meter with power when the utility power fails, and the battery supply is disconnected by the switch element to stop supplying the control unit of the electricity meter with power when the utility power supplies power. Therefore, the power leakage way of the battery supply is cut off by the switch element, the power consumption speed of the battery is lowered, and the service life of the battery is prolonged.
Description
Technical field
The utility model belongs to the electronic instrument technical field, relates in particular to a kind of electric energy meter and power circuit thereof.
Background technology
Electric energy meter has been widely used in the middle of people's the life as electronic instrument commonly used.Electric energy meter is under the grid power blackout state, and is mainly battery-powered, and electric energy meter is checked meter or carry out some logouts so that be used for waking up, such as the detection of uncapping, interruption duration accumulative total, battery working time statistics etc.
In this process, need Circuits System to carry out operation detection, just must consume battery power.Because the particularity of electric energy meter can not be used chargeable reusable battery, the user generally requires to adopt disposable lithium cell, and in this case, the battery power consumption of electric energy meter is very fast, generally can only continue the time of some months.
The utility model content
The purpose of this utility model is to provide a kind of power circuit of electric energy meter, is intended to solve present electric energy meter and has the fast problem of battery power consumption.
The utility model is achieved in that a kind of power circuit of electric energy meter, and the power circuit of described electric energy meter comprises:
Battery supply;
Partial pressure unit; And
The described battery supply of input termination, control end connects mains supply by described partial pressure unit, the switch element of the power end of output termination electric energy meter control unit.
In the said structure, described battery supply comprises multichannel battery pack formation in parallel, the parallel connection one end ground connection of described battery supply, and the input of the described switch element of another termination of the parallel connection of described battery supply, every road battery pack is in series by battery and diode.
In the said structure, described switch element adopts metal-oxide-semiconductor Q1, and the source electrode of described metal-oxide-semiconductor Q1 is the input of switch element, and the grid of described metal-oxide-semiconductor Q1 is the control end of switch element, and the drain electrode of described metal-oxide-semiconductor Q1 is the output of switch element.
In the said structure, described partial pressure unit comprises divider resistance R1 and divider resistance R2, the described mains supply of first termination of described divider resistance R1, second end of described divider resistance R1 is by divider resistance R2 ground connection, and the public connecting end of described divider resistance R1 and divider resistance R2 connects the control end of described switch element.
Another purpose of the present utility model is to provide a kind of electric energy meter, comprises the electric energy meter control unit, and described electric energy meter also comprises power circuit, and described power circuit comprises:
Battery supply;
Partial pressure unit; And
The described battery supply of input termination, control end connects mains supply by described partial pressure unit, the switch element of the power end of output termination electric energy meter control unit.
In the said structure, described battery supply comprises multichannel battery pack formation in parallel, the parallel connection one end ground connection of described battery supply, and the input of the described switch element of another termination of the parallel connection of described battery supply, every road battery pack is in series by battery and diode.
In the said structure, described switch element adopts metal-oxide-semiconductor Q1, and the source electrode of described metal-oxide-semiconductor Q1 is the input of switch element, and the grid of described metal-oxide-semiconductor Q1 is the control end of switch element, and the drain electrode of described metal-oxide-semiconductor Q1 is the output of switch element.
In the said structure, described partial pressure unit comprises divider resistance R1 and divider resistance R2, the described mains supply of first termination of described divider resistance R1, second end of described divider resistance R1 is by divider resistance R2 ground connection, and the public connecting end of described divider resistance R1 and divider resistance R2 connects the control end of described switch element.
In the utility model, the power circuit of electric energy meter comprises switch element, when mains failure, switch element is connected battery supply the electric energy meter control unit is powered, when mains-supplied, switch element cuts off battery supply to the power supply of electric energy meter control unit, and switch element has cut off the path of battery supply electric leakage like this, reduce the power consumption rate of battery, guaranteed the useful life of battery.
Description of drawings
Fig. 1 is the structure chart of the power circuit of the electric energy meter that provides of the utility model embodiment;
Fig. 2 is the exemplary circuit figure of the power circuit of the electric energy meter that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model embodiment provides a kind of power circuit of electric energy meter to comprise switch element, when mains failure, switch element is connected battery supply the electric energy meter control unit is powered, when mains-supplied, switch element cuts off battery supply the electric energy meter control unit is powered, switch element has cut off the path of battery supply electric leakage like this, has reduced the power consumption rate of battery, has guaranteed the useful life of battery.
Fig. 1 shows the structure of the power circuit of the electric energy meter that the utility model embodiment provides.
The utility model embodiment provides a kind of electric energy meter, comprise electric energy meter control unit 100, the power supply termination mains supply of electric energy meter control unit 100, electric energy meter also comprises power circuit 200, power circuit 200 comprises battery supply 201, switch element 202 and partial pressure unit 203, the input termination battery supply 201 of switch element 202, control end connects mains supply by partial pressure unit 203, the power end of output termination electric energy meter control unit 100, when mains failure, switch element 202 is connected 100 power supplies of 201 pairs of electric energy meter control units of battery supply, and when mains-supplied, switch element 202 cuts off 100 power supplies of 201 pairs of electric energy meter control units of battery supply.
Fig. 2 shows the exemplary circuit structure of the power circuit of the electric energy meter that the utility model embodiment provides.
As the utility model one embodiment, battery supply 201 comprises multichannel battery pack formation in parallel, the parallel connection one end ground connection of battery supply 201, the input of another termination switch element 202 of the parallel connection of battery supply 201, every road battery pack is in series by battery and diode, in the utility model embodiment, battery supply 201 comprises two-way battery pack formation in parallel, wherein, one tunnel battery pack is in series by battery BAT1 and diode D1, another road battery pack is in series by battery BAT2 and diode D2, the negative pole of battery BAT1 and battery BAT2 is ground connection simultaneously, the positive pole of battery BAT1 and battery BAT2 connects the anode of diode D1 and diode D2 respectively, and the negative electrode of diode D1 and diode D2 connects the input of switch element 202 simultaneously.The effect of diode D1 and diode D2 is: when the Voltage unbalance of battery BAT1 and battery BAT2, diode D1 or diode D2 can prevent the high battery of voltage to the anti-electric current of irritating of the low battery of voltage, thus damage or even danger that battery is caused.
As the utility model one embodiment, switch element 202 adopts metal-oxide-semiconductor Q1, and the source electrode of metal-oxide-semiconductor Q1 is the input of switch element 202, and the grid of metal-oxide-semiconductor Q1 is the control end of switch element 202, and the drain electrode of metal-oxide-semiconductor Q1 is the output of switch element 202.
As the utility model one embodiment, partial pressure unit 203 comprises divider resistance R1 and divider resistance R2, the first termination mains supply of divider resistance R1, second end of divider resistance R1 is by divider resistance R2 ground connection, and the public connecting end of divider resistance R1 and divider resistance R2 connects the control end of switch element 202.
The following describes the course of work of the power circuit of electric energy meter:
When mains failure, switch element 202 is connected 100 power supplies of 201 pairs of electric energy meter control units of battery supply, when mains-supplied, switch element 202 cuts off 100 power supplies of 201 pairs of electric energy meter control units of battery supply, switch element 202 has cut off the path of battery supply 201 electric leakages like this, reduce the power consumption rate of battery, guaranteed the useful life of battery.
In addition, the multichannel battery pack is in parallel to be constituted because battery supply 201 adopts, and with respect to series-connected cell, can enlarge the utilization rate of battery.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (8)
1. the power circuit of an electric energy meter is characterized in that, the power circuit of described electric energy meter comprises:
Battery supply;
Partial pressure unit; And
The described battery supply of input termination, control end connects mains supply by described partial pressure unit, the switch element of the power end of output termination electric energy meter control unit.
2. the power circuit of electric energy meter as claimed in claim 1, it is characterized in that, described battery supply comprises multichannel battery pack formation in parallel, the parallel connection one end ground connection of described battery supply, the input of the described switch element of another termination of the parallel connection of described battery supply, every road battery pack is in series by battery and diode.
3. the power circuit of electric energy meter as claimed in claim 1, it is characterized in that, described switch element adopts metal-oxide-semiconductor Q1, the source electrode of described metal-oxide-semiconductor Q1 is the input of switch element, the grid of described metal-oxide-semiconductor Q1 is the control end of switch element, and the drain electrode of described metal-oxide-semiconductor Q1 is the output of switch element.
4. the power circuit of electric energy meter as claimed in claim 1, it is characterized in that, described partial pressure unit comprises divider resistance R1 and divider resistance R2, the described mains supply of first termination of described divider resistance R1, second end of described divider resistance R1 is by divider resistance R2 ground connection, and the public connecting end of described divider resistance R1 and divider resistance R2 connects the control end of described switch element.
5. an electric energy meter comprises the electric energy meter control unit, it is characterized in that, described electric energy meter also comprises power circuit, and described power circuit comprises:
Battery supply;
Partial pressure unit; And
The described battery supply of input termination, control end connects mains supply by described partial pressure unit, the switch element of the power end of output termination electric energy meter control unit.
6. electric energy meter as claimed in claim 5, it is characterized in that, described battery supply comprises multichannel battery pack formation in parallel, the parallel connection one end ground connection of described battery supply, the input of the described switch element of another termination of the parallel connection of described battery supply, every road battery pack is in series by battery and diode.
7. electric energy meter as claimed in claim 5, it is characterized in that described switch element adopts metal-oxide-semiconductor Q1, the source electrode of described metal-oxide-semiconductor Q1 is the input of switch element, the grid of described metal-oxide-semiconductor Q1 is the control end of switch element, and the drain electrode of described metal-oxide-semiconductor Q1 is the output of switch element.
8. electric energy meter as claimed in claim 5, it is characterized in that, described partial pressure unit comprises divider resistance R1 and divider resistance R2, the described mains supply of first termination of described divider resistance R1, second end of described divider resistance R1 is by divider resistance R2 ground connection, and the public connecting end of described divider resistance R1 and divider resistance R2 connects the control end of described switch element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202315198U CN201846124U (en) | 2010-06-21 | 2010-06-21 | Electricity meter and power supply circuit of electricity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202315198U CN201846124U (en) | 2010-06-21 | 2010-06-21 | Electricity meter and power supply circuit of electricity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201846124U true CN201846124U (en) | 2011-05-25 |
Family
ID=44041000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202315198U Expired - Fee Related CN201846124U (en) | 2010-06-21 | 2010-06-21 | Electricity meter and power supply circuit of electricity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201846124U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338816A (en) * | 2011-06-17 | 2012-02-01 | 杭州炬华科技股份有限公司 | Resistance-capacitance power supply for tri-manganin electric energy meter |
| CN108539847A (en) * | 2018-04-26 | 2018-09-14 | 国网福建省电力有限公司 | Multifunctional intelligent electric energy meter power-supply system |
-
2010
- 2010-06-21 CN CN2010202315198U patent/CN201846124U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338816A (en) * | 2011-06-17 | 2012-02-01 | 杭州炬华科技股份有限公司 | Resistance-capacitance power supply for tri-manganin electric energy meter |
| CN102338816B (en) * | 2011-06-17 | 2013-06-05 | 杭州炬华科技股份有限公司 | Resistance-capacitance power supply for tri-manganin electric energy meter |
| CN108539847A (en) * | 2018-04-26 | 2018-09-14 | 国网福建省电力有限公司 | Multifunctional intelligent electric energy meter power-supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20150621 |
|
| EXPY | Termination of patent right or utility model |