CN103944250A - Battery passivation preventing circuit of single-phase intelligent electric energy meter - Google Patents
Battery passivation preventing circuit of single-phase intelligent electric energy meter Download PDFInfo
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- CN103944250A CN103944250A CN201410160261.XA CN201410160261A CN103944250A CN 103944250 A CN103944250 A CN 103944250A CN 201410160261 A CN201410160261 A CN 201410160261A CN 103944250 A CN103944250 A CN 103944250A
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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
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Abstract
The invention discloses a battery passivation preventing circuit of a single-phase intelligent electric energy meter. The battery passivation preventing circuit comprises a main CPU, a main power source, a power supply battery, an energy storage circuit, a voltage monitoring circuit and a discharging circuit, wherein the main power source and the power supply battery are connected with the main CPU, the energy storage circuit is arranged between the main power source and the power supply battery, the voltage monitoring circuit is used for monitoring the voltage of the power supply battery, and the discharging circuit is used for controlling the power supply battery to carry out interval discharging to activate passivation. The energy storage circuit comprises a duodiode and an energy storage capacitor, when power is supplied by the main power source, a diode connected with the main power source is turned on to supply power to the main CPU and charge the energy storage capacitor at the same time, when power down occurs, the energy storage capacitor and the power supply battery jointly serve as a standby power source to supply power to a system, and the power supply battery is converted into a final standby power source along with gradual elimination of battery passivation; after the power is supplied by the power supply battery, the diode connected with the power supply battery is turned on to charge the energy storage capacitor. According to the battery passivation preventing circuit, battery passivation is effectively eliminated, and system abnormal work caused by battery passivation is avoided.
Description
Technical field
The present invention relates to the anti-passivation circuit of a kind of battery, be specifically related to the anti-passivation circuit of a kind of single-phase intelligent electric energy meter battery.
Background technology
State's net intelligent meter adopts rate metering, has the functions such as electric weight is settled accounts, timing is freezed, load record, power failure LCD demonstration.These functions are based upon on the basis of accurate timing, and accurately timing be unable to do without while power failure, the normal power supply of clock battery.According to relevant criterion requirement, be greater than 15 years the designed life of intelligent electric energy meter, clock battery can normally be worked within designed life, the type selecting of clock battery and quality control, battery control circuit design, CPU low power dissipation design, when later maintenance, the conveniently replaced grade of battery is all very crucial, especially in single-phase intelligent electric energy meter design, often adopt same battery as two kinds of different purposes of clock battery and working power for subsequent use, if battery failures, will cause inaccurate clock, the catastrophe failures such as significant data is abnormal, affect the people's normal electricity consumption clearing.
In the past few years intelligent meter field operation experiences shows, the quality problems that cause because of battery are one of main complaint problems of intelligent electric energy meter.Due to battery device self character complexity, it is again the working power for subsequent use of intelligent meter, support the multichannel module for power supply such as CPU, liquid crystal, clock chip, storage capacitor, once battery failures cannot provide power supply, under the situation that will directly cause power failure, clock of power meter stops walking simultaneously.
In state's net single-phase smart meter clock battery operation and maintenance, one of reason of fault is exactly: battery passivation causes system crash.Battery passivation problem is the inevitable specific character of battery itself.Battery sparking electrode in the time not using can produce passivation, and internal resistance strengthens, and in the time that needs externally discharge, needs the regular hour to carry out passivation releasing, could discharge corresponding power.When current single-phase intelligent electric energy meter designs, generally only consider battery discharge under normal circumstances, do not consider the battery discharge impact in passivation situation, cause in power failure process, the battery activated moment can not maintain needed voltage and power, thereby causes a large amount of electric energy meters in power down process, to occur all kinds of faults.
Summary of the invention
The deficiency existing for prior art, the object of the invention is to provide and a kind ofly prevents that the anti-passivation circuit of single-phase intelligent electric energy meter battery of all kinds of faults from appearring in electric energy meter in power down process, effectively remove battery passivation phenomenon, the system exception work of having avoided battery passivation to cause.
To achieve these goals, the present invention realizes by the following technical solutions:
The main power source, the supplying cell that the present invention includes master cpu and be connected with master cpu, be arranged on accumulator between main power source and supplying cell, for monitoring the electric voltage observation circuit of supplying cell voltage and activating the discharge circuit of passivation for controlling the electric discharge of supplying cell interval; Accumulator comprises double diode and storage capacitor, main power source is connected with the first positive pole of double diode, the positive pole of supplying cell is connected with the second positive pole of double diode, and the negative pole of double diode is connected with the positive pole of storage capacitor, the minus earth of storage capacitor; In the time that main power source is powered, the diode current flow being connected with main power source, main power source is powered and is charged to storage capacitor simultaneously to master cpu; In the time that power down occurs, storage capacitor and supplying cell jointly as stand-by power supply to system power supply, along with the progressively releasing of battery passivation, supplying cell is converted to final stand-by power supply; After supplying cell power supply, the diode current flow being connected with supplying cell, supplying cell charges to storage capacitor.
Above-mentioned discharge circuit comprises controlled activation resistance, activates resistance one end and is connected with supplying cell positive pole, and the other end is connected with master cpu, and under normality, master cpu is high level with activating resistance link; In the time that main power source is powered, master cpu time opening activates resistance, monitor supplying cell band live by electric voltage observation circuit presses simultaneously, if supplying cell voltage is lower than 3.2V, and voltage falls amplitude expansion trend, illustrate that supplying cell is in passive state, master cpu will with activate resistance be connected hold drag down, make to activate between resistance, supplying cell and ground and form discharge loop, thereby activate the supplying cell of passivation.
Above-mentioned electric voltage observation circuit comprises the first divider resistance and the second divider resistance being connected with first divider resistance one end, the positive pole of another termination supplying cell of the first divider resistance, the negative pole of another termination supplying cell of the second divider resistance, the public termination master cpu of the first divider resistance and the second divider resistance.
The anti-passivation circuit of single-phase intelligent electric energy meter battery of the present invention has effectively been removed battery passivation phenomenon, the system exception work of having avoided battery passivation to cause, and meanwhile, circuit of the present invention is simple, reliability is high.
Brief description of the drawings
Fig. 1 is circuit block diagram of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
Referring to Fig. 1, the anti-passivation circuit of a kind of single-phase intelligent electric energy meter battery comprises master cpu and the warning circuit being connected with master cpu, main power source, supplying cell, accumulator, for the electric voltage observation circuit of battery voltage monitoring with control the discharge circuit of supplying cell interval electric discharge.Supplying cell is 3.6V lithium battery.
Referring to Fig. 2, accumulator refers to that main power source is connected with GND by double diode TD1, storage capacitor C1 with supplying cell BT.In the time that main power source is powered, above double diode TD1, diode current flow is given storage capacitor C1 charging to master cpu power supply simultaneously, in the time being switched to supplying cell BT power supply, can power for master cpu by storage capacitor C1 electric discharge is of short duration.
Electric voltage observation circuit refers to that two resistance R 1, the R2 by being connected successively with supplying cell BT is connected with GND, connects master cpu in the middle of R1, R2.
Battery discharging circuit refers to that activation resistance R 3 is connected supplying cell BT with master cpu, and under normality, master cpu is connected end level for high with activation resistance R 3, and when electric discharge, master cpu will be connected with R3 to hold and set low, and make to form discharge loop between BT, R3 and GND.
Accumulator in the present invention be using one enough large capacity C 1 as storage capacitor, under not power failure situation, charged to storage capacitor by main power source, in the time that power down occurs, this storage capacitor as the second stand-by power supply and supplying cell jointly as stand-by power supply to system power supply, along with the progressively releasing of battery passivation, supplying cell is converted to final stand-by power supply.Meanwhile, after supplying cell power supply, when the sleep of intelligent meter master cpu, supplying cell charges to storage capacitor, and when CPU wakes up or I2C operates, pulse current is provided by storage capacitor, even if lithium battery has voltage delay like this, can not affect the normal work of intelligent meter yet, avoid battery passivation effect.
Battery discharging circuit in the present invention and electric voltage observation circuit refer to increases controlled activation resistance R 3 on battery feed circuit, the dividing potential drop of cell voltage on resistance R 1, R2, can realize intelligent meter by the voltage on monitoring R2 and in the time moving, battery passivation be detected and activated.In the time that main power source is powered, master cpu time opening activates resistance, monitor lithium battery band live by battery voltage supervisory circuit presses simultaneously, if find, lithium battery forces down in 3.2V, and on the rise, illustrate that lithium battery is in passive state, the CPU one end that will be connected with R3 drags down, and makes battery be discharged and be activated the battery of passivation with this by R3.
The anti-passivation circuit of single-phase intelligent electric energy meter battery provided by the invention has the advantages such as use is simple, reliability is strong.While using this technology can solve fast and effectively on-the-spot use, occur the problem of battery failures, avoid dismounting electric energy meter again to affect user power utilization, especially current main-stream electric energy meter all has expense control function,
The anti-passivation circuit of single-phase intelligent electric energy meter battery of the present invention has effectively been removed battery passivation phenomenon, the system exception work of having avoided battery passivation to cause; Circuit of the present invention is simple; Ensure that electric energy meter reliability prevention electricity consumption dispute is particularly important.
More than show and described general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. the anti-passivation circuit of single-phase intelligent electric energy meter battery, it is characterized in that, the main power source, the supplying cell that comprise master cpu and be connected with master cpu, be arranged on accumulator between main power source and supplying cell, for monitoring the electric voltage observation circuit of supplying cell voltage and activating the discharge circuit of passivation for controlling the electric discharge of supplying cell interval;
Described accumulator comprises double diode and storage capacitor, described main power source is connected with the first positive pole of double diode, the positive pole of described supplying cell is connected with the second positive pole of double diode, the negative pole of described double diode is connected with the positive pole of storage capacitor, the minus earth of described storage capacitor; In the time of described main power source power supply, the diode current flow being connected with main power source, main power source is powered and is charged to storage capacitor simultaneously to master cpu; In the time that power down occurs, described storage capacitor and supplying cell jointly as stand-by power supply to system power supply, along with the progressively releasing of battery passivation, supplying cell is converted to final stand-by power supply; After supplying cell power supply, the diode current flow being connected with supplying cell, supplying cell charges to storage capacitor.
2. the anti-passivation circuit of single-phase intelligent electric energy meter battery according to claim 1, it is characterized in that, described discharge circuit comprises controlled activation resistance, described activation resistance one end is connected with supplying cell positive pole, the other end is connected with master cpu, under normality, master cpu is high level with activating resistance link; In the time that main power source is powered, master cpu time opening activates resistance, press by described electric voltage observation circuit monitoring supplying cell band live simultaneously, if supplying cell voltage is lower than 3.2V, and voltage falls amplitude expansion trend, illustrate that described supplying cell is in passive state, described master cpu will with activate resistance be connected hold drag down, make to form discharge loop between described activation resistance, supplying cell and ground, thus the supplying cell of activation passivation.
3. the anti-passivation circuit of single-phase intelligent electric energy meter battery according to claim 1 and 2, it is characterized in that, described electric voltage observation circuit comprises the first divider resistance and the second divider resistance being connected with first divider resistance one end, the positive pole of another termination supplying cell of described the first divider resistance, the negative pole of another termination supplying cell of described the second divider resistance, the public termination master cpu of described the first divider resistance and the second divider resistance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410160261.XA CN103944250A (en) | 2014-04-21 | 2014-04-21 | Battery passivation preventing circuit of single-phase intelligent electric energy meter |
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| CN201410160261.XA CN103944250A (en) | 2014-04-21 | 2014-04-21 | Battery passivation preventing circuit of single-phase intelligent electric energy meter |
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| CN103944250A true CN103944250A (en) | 2014-07-23 |
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| CN201410160261.XA Pending CN103944250A (en) | 2014-04-21 | 2014-04-21 | Battery passivation preventing circuit of single-phase intelligent electric energy meter |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333116A (en) * | 2014-11-27 | 2015-02-04 | 北京电子工程总体研究所 | Electricity discharging and converting system before emission of lithium battery for aircraft and electricity discharging and converting control method adopting same |
| CN104333115A (en) * | 2014-11-27 | 2015-02-04 | 北京电子工程总体研究所 | Simulated power transfer control device and power transfer control method realized by adopting same |
| CN106329020A (en) * | 2016-08-31 | 2017-01-11 | 成都前锋电子仪器有限责任公司 | Anti-passivation circuit of lithium battery |
| CN106849329A (en) * | 2017-01-25 | 2017-06-13 | 青岛盛邦慧通能源科技有限公司 | A kind of electric energy meter power supply circuit |
| CN106876623A (en) * | 2017-01-22 | 2017-06-20 | 河南许继仪表有限公司 | A kind of replaceable electric energy meter of battery and electric energy meter bottom |
| CN107356791A (en) * | 2017-08-31 | 2017-11-17 | 中电装备山东电子有限公司 | A kind of single-phase intelligent electric energy meter of replaceable battery |
| CN111584959A (en) * | 2020-05-22 | 2020-08-25 | 广东电网有限责任公司 | Lithium battery passivation detection and activation circuit, method and device |
| CN111736495A (en) * | 2020-02-25 | 2020-10-02 | 济南沛华信息科技有限公司 | Intelligent instrument control method and device |
| CN112986672A (en) * | 2021-02-07 | 2021-06-18 | 上海金陵智能电表有限公司 | Single-phase intelligent ammeter lithium cell anti-passivation design circuit |
| CN115980442A (en) * | 2023-03-20 | 2023-04-18 | 深圳龙电华鑫控股集团股份有限公司 | Meter opening box detection method, electric meter box and electronic equipment |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333115A (en) * | 2014-11-27 | 2015-02-04 | 北京电子工程总体研究所 | Simulated power transfer control device and power transfer control method realized by adopting same |
| CN104333116A (en) * | 2014-11-27 | 2015-02-04 | 北京电子工程总体研究所 | Electricity discharging and converting system before emission of lithium battery for aircraft and electricity discharging and converting control method adopting same |
| CN106329020A (en) * | 2016-08-31 | 2017-01-11 | 成都前锋电子仪器有限责任公司 | Anti-passivation circuit of lithium battery |
| CN106876623B (en) * | 2017-01-22 | 2019-08-23 | 河南许继仪表有限公司 | A kind of electric energy meter that battery is replaceable and electric energy meter bottom |
| CN106876623A (en) * | 2017-01-22 | 2017-06-20 | 河南许继仪表有限公司 | A kind of replaceable electric energy meter of battery and electric energy meter bottom |
| CN106849329A (en) * | 2017-01-25 | 2017-06-13 | 青岛盛邦慧通能源科技有限公司 | A kind of electric energy meter power supply circuit |
| CN107356791A (en) * | 2017-08-31 | 2017-11-17 | 中电装备山东电子有限公司 | A kind of single-phase intelligent electric energy meter of replaceable battery |
| CN107356791B (en) * | 2017-08-31 | 2023-05-23 | 中电装备山东电子有限公司 | Single-phase intelligent ammeter of removable battery |
| CN111736495A (en) * | 2020-02-25 | 2020-10-02 | 济南沛华信息科技有限公司 | Intelligent instrument control method and device |
| CN111584959A (en) * | 2020-05-22 | 2020-08-25 | 广东电网有限责任公司 | Lithium battery passivation detection and activation circuit, method and device |
| CN112986672A (en) * | 2021-02-07 | 2021-06-18 | 上海金陵智能电表有限公司 | Single-phase intelligent ammeter lithium cell anti-passivation design circuit |
| CN115980442A (en) * | 2023-03-20 | 2023-04-18 | 深圳龙电华鑫控股集团股份有限公司 | Meter opening box detection method, electric meter box and electronic equipment |
| CN115980442B (en) * | 2023-03-20 | 2023-08-18 | 马剑 | Open meter box detection method, ammeter box and electronic equipment |
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Application publication date: 20140723 |