CN107356791A - A kind of single-phase intelligent electric energy meter of replaceable battery - Google Patents
A kind of single-phase intelligent electric energy meter of replaceable battery Download PDFInfo
- Publication number
- CN107356791A CN107356791A CN201710773372.1A CN201710773372A CN107356791A CN 107356791 A CN107356791 A CN 107356791A CN 201710773372 A CN201710773372 A CN 201710773372A CN 107356791 A CN107356791 A CN 107356791A
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- electric energy
- energy meter
- phase intelligent
- resistance
- intelligent electric
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a kind of single-phase intelligent electric energy meter of replaceable battery, including single-phase intelligent electric energy meter body, described single-phase intelligent electric energy meter body is provided with battery compartment, and the battery case equipped with battery is placed with the battery compartment.The Clock battery of traditional electric energy meter circuit plate is welded on to place by designing a battery compartment, battery compartment is placed in communication module storehouse right, battery can be directly changed after opening the side flip of nameplate, it is time saving and energy saving, greatly reduce use cost.
Description
Technical field
The present invention relates to intelligent electric energy meter design field, the single-phase intelligent electric energy of specifically a kind of replaceable battery
Table.
Background technology
China's intelligent electric meter industry development is more quick.Calculated according to bid data, at present the intelligent electric meter in state's mesh sheet area
Coverage rate has reached 80%, and nationwide coverage rate is also up to more than 70%, and intelligence has been issued from national grid in 2009
Energy electric energy meter standard, has done very high to functions related to clock accuracy such as single-phase electric energy meter rate electric energy, logouts
It is required that.Up to now state's net has added up bid intelligent electric meter 4.77 hundred million, wherein 2014 and 2015, the intelligence of national grid
Ammeter bid quantity has been above 90,000,000.2016, national grid will start a collection of intelligent distribution network demonstrative project, strengthen
Old metering device upgrading, new clothes intelligent electric energy meter 60,580,000.
With the large batch of application of intelligent electric energy meter, found in site of deployment, most of failure as (rate electric energy is chaotic,
Time at generation moment in logout is not to, anti-stealing electricity function failure etc.) all it is to cause clock to mix because Clock battery is under-voltage
Caused by unrest.
Traditional single-phase intelligent electric energy meter Clock battery is welded on internal circuit board, and factory can only be returned by changing battery,
Take time and effort, cost is high.
The content of the invention
In order to solve the above problems, the invention provides a kind of single-phase intelligent electric energy meter of replaceable battery, designs one
Battery compartment is welded on the Clock battery of traditional electric energy meter circuit plate to place, and battery compartment is placed in into communication module storehouse right, opened
Battery can be directly changed after the side flip of nameplate, it is time saving and energy saving, greatly reduce use cost.
The embodiments of the invention provide a kind of single-phase intelligent electric energy meter of replaceable battery, including single-phase intelligent electric energy meter sheet
Body, described single-phase intelligent electric energy meter body are provided with battery compartment, the battery case equipped with battery are placed with the battery compartment.
Further, the inside of the single-phase intelligent electric energy meter body is provided with super capacitor and switching circuit, the switching
The input connection intrinsic control chip of single-phase intelligent electric energy meter of circuit, the output end of the switching circuit connect electricity respectively
Battery case and super capacitor in the storehouse of pond.
Further, the intrinsic control chip of single-phase intelligent electric energy meter uses chip FM33A048.
Further, described switching circuit includes resistance R1, and resistance R1 mono- terminates battery case positive pole, the resistance R2 other ends
Connecting resistance R2 one end, parallel diode group Q2 positive poles, parallel diode group Q2 negative poles connect the VDD pins of control chip respectively, and
Diode Q2 negative poles are grounded by resistance R4；The resistance R2 other ends connect electric capacity C1 one end, resistance R3 one end respectively, and electric capacity C1 is another
End, the resistance R3 other ends are grounded；The VDD pins of control chip meet electric capacity C2 one end, electric capacity C3 one end, diode group Q1 respectively
The negative pole of one diode, resistance R6 one end, control chip VSS pins, the electric capacity C2 other ends, the electric capacity C3 other ends are grounded,
The positive pole of diode group mono- diode of Q1 connects VDD1, diode group Q1 another diode cathode respectively, and diode group Q1 is another
The negative pole of one diode meets VDD2；Resistance R6 it is another termination series diode group Q3 negative poles, positive pole connect by resistance R5
The tie point of two diodes is connected with super capacitor CD1 positive pole in VDD1, series diode group Q3, super capacitor CD1's
Negative pole is grounded.
Further, diode group Q1 uses two BAT54A diodes.
Further, parallel diode group Q2 uses two BAT54C diodes in parallel.
Further, series diode group Q3 uses the BAT54S diodes of two series connection.
The effect provided in the content of the invention is only the effect of embodiment, rather than whole effects that invention is all, above-mentioned
A technical scheme in technical scheme has the following advantages that or beneficial effect：
1st, the Clock battery of traditional electric energy meter circuit plate is welded on to place by designing a battery compartment, battery compartment is put
In communication module storehouse right, battery can be directly changed after opening the side flip of nameplate.
2nd, switching circuit and super capacitor are devised, when clock battery undervoltage, liquid crystal display shows battery undervoltage symbol, enters
Row battery undervoltage is alarmed, and is reminded user to change battery, battery undervoltage situation, is kept clock more than 2 days batteries of correct timing to remove
Afterwards, the clocking error degree of accuracy is less than 2S/d, flexible, cleverly circuit realiration super capacitor, battery powered automatic switchover, without
Human intervention.
Brief description of the drawings
Fig. 1 is a kind of single-phase intelligent electric energy meter schematic diagram of the present invention；
Fig. 2 is switching circuit schematic diagram.
In Fig. 1：1 lead sealing lid, nameplate on 2,3 times nameplates, 4 terminal cap lead sealing screws, 5 battery compartments, 6 renovate lead sealing screw, and 7
Communication module, 8 table cover lead sealing screws.
Embodiment
For the technical characterstic for illustrating this programme can be understood, below by embodiment, and its accompanying drawing is combined, to this hair
It is bright to be described in detail.Following disclosure provides many different embodiments or example is used for realizing the different knots of the present invention
Structure.In order to simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.In addition, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relation between various embodiments are discussed and/or set.It should be noted that part illustrated in the accompanying drawings is not necessarily to scale
Draw.Present invention omits the description to known assemblies and treatment technology and process to avoid being unnecessarily limiting the present invention.
A kind of single-phase intelligent electric energy as shown in Figure 1, including housing and internal mainboard, be provided with lead sealing lid 1, upper nameplate 2,
Lower nameplate 3, terminal cap lead sealing screw 4, battery compartment 5, renovate lead sealing screw 6, communication module 7, table cover lead sealing screw 8.
Wherein, lead sealing lid, terminal cap lead sealing screw, table cover lead sealing screw are to prevent electricity stealing, and upper nameplate is main
The instruction explanation of the manufacturing license number of manufacturer, and the examination criteria of institute's foundation, also luminous tube, lower nameplate are described
The main model for marking product, specification, meter constant, degree of protection, the metering grade of table and vendor name and trade mark；It is described
The battery case equipped with battery is placed with battery compartment, lithium battery is provided with battery case, can be under powering-off state, there is provided during ammeter
The power supply of clock, if live battery undervoltage can take out battery case, change battery；Communication module can install carrier module, micro-
Power wireless module, realize the copy reading to ammeter data.
The inside of the single-phase intelligent electric energy meter body is provided with super capacitor and switching circuit, the input of the switching circuit
The end connection intrinsic control chip of single-phase intelligent electric energy meter, the output end of the switching circuit connect the electricity in battery compartment respectively
Pond box and super capacitor.
As shown in Fig. 2 described switching circuit includes resistance R1, resistance R1 mono- terminates battery case positive pole, and resistance R2 is another
Connecting resistance R2 one end, parallel diode group Q2 positive poles, parallel diode group Q2 negative poles connect the VDD pins of control chip respectively at end,
And diode Q2 negative poles are grounded by resistance R4；The resistance R2 other ends connect electric capacity C1 one end, resistance R3 one end respectively, and electric capacity C1 is another
One end, the resistance R3 other ends are grounded；The VDD pins of control chip connect electric capacity C2 one end, electric capacity C3 one end, diode group respectively
The negative pole of mono- diode of Q1, resistance R6 one end, control chip VSS pins, the electric capacity C2 other ends, the electric capacity C3 other ends connect
Ground, the positive pole of diode group mono- diode of Q1 meet VDD1, diode group Q1 another diode cathode, diode group Q1 respectively
The negative pole of another diode meets VDD2；Resistance R6 it is another termination series diode group Q3 negative poles, positive pole connect by resistance R5
The tie point of two diodes is connected with super capacitor CD1 positive pole in VDD1, series diode group Q3, super capacitor CD1's
Negative pole is grounded.Wherein, the intrinsic control chip of single-phase intelligent electric energy meter uses chip FM33A048, diode group Q1 to use two
Individual BAT54A diodes, parallel diode group Q2 use two BAT54C diodes in parallel, and series diode group Q3 uses two
The BAT54S diodes of individual series connection.
Switching circuit operation principle is as follows：
VDD1 be by municipal administration power supply 220V conversion 5V, when electric energy meter plus external power source 220V, VDD1 at voltage be+
Voltage is about 4.8V at 5V, VCPU, and now lithium battery and super capacitor are all in cut-off state, and MCU operating voltages are by 4.8V
There is provided.Meanwhile VDD1 charges by current-limiting resistance R5 to super capacitor CD1.
When the firm power down of municipal administration power supply 220V, voltage drops to 0V at VDD1.Now, voltage is about on super capacitor
4.8V, lithium battery B1 voltage are 3.6V, and super-capacitor voltage is higher than lithium battery voltage, and MCU operating voltages are now by super electricity
Hold and provide.
Power after a period of time, super capacitor CD1 voltages decline, and when voltage is less than 3.6V, MCU operating voltages are by battery
3.6V provide.
In the case of electric energy meter power-off and battery undervoltage, battery can be changed, electric energy meter is in super low-power consumption state, MCU
Only need to run clock circuit, now super-capacitor voltage only supplies MCU internal clock circuits, and maintains the correct timing of clock extremely
It is few 2 days.
Ultracapacitor storage energy in the electric charge isolated, area for storing electric charge is bigger, the electricity isolated
Lotus is more intensive, and its capacitance is bigger.Its technical characteristic is as follows：
A. charging rate is fast, and charging can reach more than the 95% of its rated capacity in 10 seconds~10 minutes；
B. service life cycle is grown, and depth charge and discharge cycles access times are up to 1~500,000 times；
C. energy conversion efficiency is high, and process losses are small, high current energy circulation efficiency >=90%.
Ultracapacitor is the capacitor using electric double layer principle.When applied voltage is added to two pole plates of ultracapacitor
When upper, as ordinary capacitor, the positive electrode storage positive charge of pole plate, negative plate storage negative electrical charge, in ultracapacitor
On two-plate under electric field action caused by electric charge, in electrolyte with forming opposite electric charge on interelectrode interface, to balance electricity
The internal electric field of liquid is solved, this positive charge and negative electrical charge are extremely short between positive and negative charge on the contact surface between two different phases
Gap arrangement is on opposite position, and this charge distribution layers is called electric double layer, therefore capacitance is very.Electric energy meter power-off and
In the case of battery undervoltage, super capacitor is only powered for clock.
Calculate in the ideal case, electric energy meter μ A, MCU normal working voltages of clock power consumption 6 after low-power consumption is stable are
4.8V, in low-power consumption, minimum operating voltage is 1.8V, super capacitor 1.5F, clock uptime T=C* Δs V/I=
1.5F* (4.8-1.8) V/6*10^6A=7.5 × 10^5s ≈ 8.6 days.
Electric energy meter is after reference voltage loads 10min, by clock of power meter and during the standard time pair, further takes out clock electricity
Pond, now super capacitor power, ammeter enters low-power consumption mode, and crystal oscillator built in MCU and hardware compensating function, realization are gone
Except the frequency compensation process of client.Electric energy meter in the event of a power failure, stands 2 days.Clock battery is put back into electric energy meter battery
Storehouse, electricity on electric energy meter.Meter clock is no more than 2s with standard time relative error.
Although specification and drawings and examples have been carried out being described in detail to the invention, this area skill
Art personnel should be appreciated that and still the invention can be modified or equivalent substitution；And all do not depart from wound of the present invention
The technical scheme for the spirit and scope made and its improvement, it is encompassed by among the protection domain of the invention patent.
Claims (7)
1. a kind of single-phase intelligent electric energy meter of replaceable battery, including single-phase intelligent electric energy meter body, it is characterized in that：Described list
Phase intelligent electric energy meter body is provided with battery compartment, and the battery case equipped with battery is placed with the battery compartment.
2. a kind of single-phase intelligent electric energy meter of replaceable battery according to claim 1, it is characterized in that：The single-phase intelligent
The inside of electric energy meter body is provided with super capacitor and switching circuit, the input connection single-phase intelligent electric energy meter of the switching circuit
Intrinsic control chip, the output end of the switching circuit connect battery case and super capacitor in battery compartment respectively.
3. a kind of single-phase intelligent electric energy meter of replaceable battery according to claim 2, it is characterized in that：Single-phase intelligent electric energy
The intrinsic control chip of table uses chip FM33A048.
4. a kind of single-phase intelligent electric energy meter of replaceable battery according to claim 2, it is characterized in that：Described switching electricity
Road includes resistance R1, and resistance R1 mono- terminates battery case positive pole, resistance R2 other ends difference connecting resistance R2 one end, parallel diode group
Q2 positive poles, parallel diode group Q2 negative poles connect the VDD pins of control chip, and diode Q2 negative poles are grounded by resistance R4；Electricity
The resistance R2 other ends connect electric capacity C1 one end, resistance R3 one end respectively, and the electric capacity C1 other ends, the resistance R3 other ends are grounded；Control core
The VDD pins of piece connect electric capacity C2 one end, electric capacity C3 one end, the negative pole of diode group mono- diode of Q1, resistance R6 one end respectively,
Control chip VSS pins, the electric capacity C2 other ends, the electric capacity C3 other ends are grounded, the positive pole point of diode group mono- diode of Q1
VDD1, diode group Q1 another diode cathode are not connect, and the negative pole of another diode of diode group Q1 meets VDD2；Resistance R6
Another termination series diode group Q3 negative poles, positive pole VDD1 is connect by resistance R5, two diodes in series diode group Q3
Tie point be connected with super capacitor CD1 positive pole, super capacitor CD1 negative pole ground connection.
5. a kind of single-phase intelligent electric energy meter of replaceable battery according to claim 4, it is characterized in that：Diode group Q1 is adopted
With two BAT54A diodes.
6. a kind of single-phase intelligent electric energy meter of replaceable battery according to claim 4, it is characterized in that：Parallel diode group
Q2 uses two BAT54C diodes in parallel.
7. a kind of single-phase intelligent electric energy meter of replaceable battery according to claim 4, it is characterized in that：Series diode group
Q3 uses the BAT54S diodes of two series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710773372.1A CN107356791B (en) | 2017-08-31 | 2017-08-31 | Single-phase intelligent ammeter of removable battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710773372.1A CN107356791B (en) | 2017-08-31 | 2017-08-31 | Single-phase intelligent ammeter of removable battery |
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| Publication Number | Publication Date |
|---|---|
| CN107356791A true CN107356791A (en) | 2017-11-17 |
| CN107356791B CN107356791B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710773372.1A Active CN107356791B (en) | 2017-08-31 | 2017-08-31 | Single-phase intelligent ammeter of removable battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562860A (en) * | 2018-03-26 | 2018-09-21 | 深圳市科陆电子科技股份有限公司 | Electric energy meter two-way accessory power supply power consumption Auto-Test System and test method |
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| CN204422598U (en) * | 2015-02-06 | 2015-06-24 | 国家电网公司 | The single-phase charge-controlled intelligent electric meter that a kind of Clock battery is interchangeable |
| CN206208945U (en) * | 2016-08-17 | 2017-05-31 | 中国电力科学研究院 | A kind of battery changeable type single-phase electric energy meter |
| CN206362841U (en) * | 2016-12-30 | 2017-07-28 | 武汉盛帆电子股份有限公司 | Long-life intelligent electric energy meter based on super capacitor and button-shaped lithium-manganese cell |
| CN207366613U (en) * | 2017-08-31 | 2018-05-15 | 中电装备山东电子有限公司 | A kind of single-phase intelligent electric energy meter of replaceable battery |
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2017
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102157031A (en) * | 2011-04-19 | 2011-08-17 | 武汉盛帆电子股份有限公司 | Battery-changeable single-phase charge-controlled intelligent electric meter used in state grid |
| CN103944250A (en) * | 2014-04-21 | 2014-07-23 | 国家电网公司 | Battery passivation preventing circuit of single-phase intelligent electric energy meter |
| CN204422598U (en) * | 2015-02-06 | 2015-06-24 | 国家电网公司 | The single-phase charge-controlled intelligent electric meter that a kind of Clock battery is interchangeable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562860A (en) * | 2018-03-26 | 2018-09-21 | 深圳市科陆电子科技股份有限公司 | Electric energy meter two-way accessory power supply power consumption Auto-Test System and test method |
| CN108562860B (en) * | 2018-03-26 | 2021-04-13 | 深圳市科陆电子科技股份有限公司 | Automatic test system and test method for power consumption of double auxiliary power supplies of electric energy meter |
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| CN107356791B (en) | 2023-05-23 |
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