CN107991622A - Life of storage battery detection alarm system and method in wind-solar-diesel storage mixed DC power supply - Google Patents

Life of storage battery detection alarm system and method in wind-solar-diesel storage mixed DC power supply Download PDF

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Publication number
CN107991622A
CN107991622A CN201711194102.1A CN201711194102A CN107991622A CN 107991622 A CN107991622 A CN 107991622A CN 201711194102 A CN201711194102 A CN 201711194102A CN 107991622 A CN107991622 A CN 107991622A
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China
Prior art keywords
storage battery
charging
life
capacity
diesel
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CN201711194102.1A
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CN107991622B (en
Inventor
刘芙蓉
刘威
胡文锦
李文宇
刘洋
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392Determining battery ageing or deterioration, e.g. state of health
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385Arrangements for measuring battery or accumulator variables
    • G01R31/387Determining ampere-hour charge capacity or SoC

Abstract

The present invention provides life of storage battery detection alarm method in a kind of wind-solar-diesel storage mixed DC power supply, total charge capacity of record storage battery once complete charging process;2Q charging process before record storage battery, total charge capacity that each charging process is filled with are ranked up, take middle Q value and seek the arithmetic mean of instantaneous value of this Q value as storage battery full capacity P ';Detect total charge capacity of the 2Q times later charging process every time of storage battery, divided by P ', the percent value Y that total charge capacity that this charging process of storage battery is filled with takes capacity is obtained, when having that Y is less than default capacity threshold several times, judge that the life of storage battery has arrived, send alarm.The present invention is filled with electricity by detecting storage battery in charging process, estimates the present available capacity of storage battery and the service life of storage battery, its capacity check and alarm can be realized during storage battery puts into operation.

Description

Life of storage battery detection alarm system and method in wind-solar-diesel storage mixed DC power supply
Technical field
The invention belongs in wind-solar-diesel storage direct current micro-grid system field, more particularly to a kind of wind-solar-diesel storage mixed DC power supply The life of storage battery detects alarm system and method.
Background technology
With the continuous development of renewable energy technologies, the utilization for natural energy resources such as wind, light have reached its maturity. The application of direct current micro-grid system based on wind-solar-diesel storage is also more and more.Diesel-driven generator, can be renewable as backup power supply Start when energy deficiency and too low accumulator electric-quantity, charge for storage battery, while maintain load to power.Constantly filled in storage battery In discharge process, its capacity can be reduced gradually, its service life also accordingly shortens.
For wind-solar-diesel storage direct-current micro-grid, storage battery can maintain busbar electric as energy-storage units by discharge and recharge The stabilization of pressure.Therefore, the life tests of storage battery and alarm work for system can stable operation play it is most important Effect.
Verification property discharge test is the more commonly used and reliable method for detecting capacity of lead acid battery.But this side Method still has the defects of numerous, because can cause the continuous reignition of storage battery using verification property discharge test, causes electric power storage The service life in pond accordingly reduces.Constant-current discharge is carried out for other detection method of lead-acid accumulator capacities, such as to storage battery, is led to The battery rise voltage crossed after standing come calculating accumulator can discharge capacity, and estimating state of health of battery, but this is needed Battery discharging experiment is individually carried out to realize, process is relatively complicated.
The content of the invention
The technical problem to be solved in the present invention is:The life of storage battery in a kind of wind-solar-diesel storage mixed DC power supply is provided to detect Alarm system and method, overcome to detect capacity of lead acid battery and constantly it are carried out to discharge to cause its lost of life to lack Fall into.
The technical solution taken by the invention to solve the above technical problem is:In a kind of wind-solar-diesel storage mixed DC power supply The life of storage battery detects alarm method, it is characterised in that:It comprises the following steps:
Total charge capacity of S1, record storage battery once complete charging process:When being started to charge up from diesel-driven generator startup Carve, record the current value * magnitudes of voltage P of charging process successively with time interval Δ tt1、Pt2、Pt3…Ptn, until storage battery is full of Electricity, diesel-driven generator are shut down, and total charge capacity that charging process is filled with is denoted as PN=Pt1+Pt2+Pt3+…+Ptn
2Q charging process before S2, record storage battery, total charge capacity that each charging process is filled with are ranked up, take Middle Q value simultaneously seeks the arithmetic mean of instantaneous value of this Q value as storage battery full capacity P ';
Total charge capacity of each charging process after S3, detection storage battery the 2Q time, divided by P ', obtain storage battery this time Total charge capacity that charging process is filled with takes the percent value Y of capacity, when having that Y is less than default capacity threshold several times, Judge that the life of storage battery has arrived, send alarm.
As stated above, the mode for sending alarm is:Warning message is sent to remote maintenance personnel by GPRS network.
As stated above, the Q is 10.
As stated above, the capacity threshold is 80%.
As stated above, when judging that Y is less than default capacity threshold several times, for accumulation a times or b times continuous.
The life of storage battery detects alarm system in a kind of wind-solar-diesel storage mixed DC power supply, it is characterised in that:It includes electricity Sample circuit, voltage sampling circuit, central controller and memory are flowed, wherein current sampling circuit and voltage sampling circuit is defeated Enter charging current value and magnitude of voltage that end is connected to collection storage battery with storage battery respectively, current sampling circuit and voltage sample The output terminal of circuit is connected with central controller, is had computer program in memory and is called for central controller to perform The life of storage battery detects alarm method in the wind-solar-diesel storage mixed DC power supply.
By said system, the system further includes GPRS module, is connected with central controller, for warning message to be passed through GPRS networks are sent to remote maintenance personnel.
Beneficial effects of the present invention are:The electricity being filled with by detecting storage battery in charging process, estimates storage battery The currently active capacity and storage battery service life, its capacity check can be realized during storage battery puts into operation, at the same time The service life warning function of storage battery is also achieved, thus avoid and detect accumulator capacity so as to cause storage battery by discharging The problem of service life reduction.
Brief description of the drawings
Fig. 1 is the system principle diagram of one embodiment of the invention.
Fig. 2 is the current sampling circuit figure of one embodiment of the invention.
Fig. 3 is the voltage sampling circuit figure of one embodiment of the invention.
Fig. 4 is the method flow diagram of one embodiment of the invention.
Embodiment
With reference to instantiation and attached drawing, the present invention will be further described.
The present invention provides life of storage battery detection alarm method in a kind of wind-solar-diesel storage mixed DC power supply, as shown in figure 4, It comprises the following steps:
S1, the total charge capacity for recording charging process of storage battery:From diesel-driven generator starts and starts to charge up constantly, Record the current value * magnitudes of voltage P of charging process successively with time interval Δ tt1、Pt2、Pt3…Ptn, until storage battery is fully charged, bavin Fry dried food ingredients motor stopping, total charge capacity that charging process is filled with are denoted as PN=Pt1+Pt2+Pt3+…+Ptn
S2, record storage battery before 2Q (;Such as Q=10) secondary charging process, total charging electricity that each charging process is filled with Amount is ranked up, and is taken middle Q value and is sought the arithmetic mean of instantaneous value of this Q value as storage battery full capacity P ';
Total charge capacity of each charging process after S3, detection storage battery the 2Q time, divided by P ', obtain storage battery this time Total charge capacity that charging process is filled with takes the percent value Y of capacity, when having (such as accumulative 5 times or 3 times continuous) several times During less than default capacity threshold (such as 80%), judge that the life of storage battery has arrived, send alarm.
In the present embodiment, the mode for sending alarm is:Warning message is sent by GPRS network in the form of mobile phone newspaper Give remote maintenance personnel.
The life of storage battery detects alarm system in a kind of wind-solar-diesel storage mixed DC power supply, as shown in Figure 1, Figure 2 and Figure 3, It includes current sampling circuit, voltage sampling circuit, central controller and memory, wherein current sampling circuit and voltage sample The input terminal of circuit is connected to the charging current value and battery voltage value of collection storage battery, current sample electricity with storage battery respectively The output terminal of road and voltage sampling circuit is connected with central controller, is had computer program in memory and is controlled for center Device is called to perform life of storage battery detection alarm method in the wind-solar-diesel storage mixed DC power supply.The system further includes GPRS module, is connected with central controller, for warning message to be sent to remote maintenance personnel by GPRS network.
Central controller can initialize system hardware and data when working on power, and controller will monitor in real time Whether diesel-driven generator starts is charged for storage battery.When diesel-driven generator starts, show regenerative resource power supply deficiency at this time, And accumulator electric-quantity as low as warning value, generator will be that storage battery charges, and will can at this time be considered as the charging starting point of storage battery.This When, the ADC sample circuits of controller will devote oneself to work, and charging current to storage battery and voltage carry out sample conversion, then with Time interval Δ t records the current value * magnitudes of voltage P of charging process successivelyt1、Pt2、Pt3…Ptn, until storage battery is fully charged, diesel oil Generator outage, charging process are filled with total electricity and are denoted as PN=Pt1+Pt2+Pt3+…+Ptn
One method control flow of the present embodiment is as follows:
Step 1: relevant device initializes:Mainly include controller to initialize, charging times statistical value N and alarm counts Value i is initialized;GPRS module initializes, and checks GPRS working statuses, reads local SIM card number, has Internet access by dialing.
Step 2: controller will monitor whether diesel-driven generator starts as storage battery charging in real time.When diesel-driven generator opens When dynamic, the ADC sample circuits of controller will devote oneself to work, and the charging current and voltage of storage battery are sampled, then with when Between interval of delta t record the current value * magnitudes of voltage P of charging process successivelyt1、Pt2、Pt3…Ptn, until storage battery is fully charged, diesel oil hair Motor stopping, charging process are filled with total charge capacity and are denoted as P=Pt1+Pt2+Pt3+…+Ptn
Step 3: 2Q (Q=10 herein) secondary charging process before record storage battery, total charging that each charging process is filled with Electricity is ranked up, and is taken middle Q value and is sought the arithmetic mean of instantaneous value of this Q value as storage battery full capacity P '.
Step 4: total charge capacity and P ' are divided by recorded in charging process every time by after, you can obtain this charging After accumulator capacity percent value Y.
Step 5: when (5 times or 3 times continuous accumulative) is less than default capacity threshold (being set to 80% herein) to Y several times, Judge that the life of storage battery reaches alarm value, warning information is sent to GPRS module, by command adapted thereto, based on GPRS network, It is sent to remote maintenance personnel in the form of short message, reminds related personnel to come to safeguard replacement storage battery.
It is appreciated that embodiment as described herein can be by hardware, software, firmware, middleware, microcode or its any combination To realize.For hardware implementation mode, processing unit can be at one or more application-specific integrated circuits (ASIC), digital signal Manage device (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), Processor, controller, microprocessor, microcontroller, be designed to perform the other electronic units or its group of function described herein Realized in closing., can be by it when with software, firmware, middleware or microcode, program code or code segment to realize embodiment Be stored in the machine readable media of such as storage assembly.
The voltage and current value used when calculating accumulator electric-quantity in embodiment can also be obtained by network communication mode.
Above example is merely to illustrate the design philosophy and feature of the present invention, and its object is to make technology in the art Personnel can understand present disclosure and implement according to this, and protection scope of the present invention is not limited to above-described embodiment.So it is all according to The equivalent variations made according to disclosed principle, mentality of designing or modification, within protection scope of the present invention.

Claims (7)

1. life of storage battery detection and alarm method in a kind of wind-solar-diesel storage mixed DC power supply, it is characterised in that:It include with Lower step:
Total charge capacity of S1, record storage battery once complete charging process:From diesel-driven generator starts and starts to charge up constantly, Record the current value * magnitudes of voltage P of charging process successively with time interval Δ tt1、Pt2、Pt3…Ptn, until storage battery is fully charged, bavin Fry dried food ingredients motor stopping, total charge capacity that charging process is filled with are denoted as P=Pt1+Pt2+Pt3+…+Ptn
2Q charging process before S2, record storage battery, total charge capacity that each charging process is filled with are ranked up, and take centre Q value simultaneously seeks the arithmetic mean of instantaneous value of this Q value as storage battery full capacity P ';
Total charge capacity of the 2Q times S3, detection storage battery later charging process every time, divided by P ', obtain this charging of storage battery Total charge capacity that process is filled with accounts for the percent value Y of storage battery full capacity, when have several times Y be less than default capacity threshold When, judge that the life of storage battery has arrived, send alarm.
2. the life of storage battery detects alarm method, its feature in wind-solar-diesel storage mixed DC power supply according to claim 1 It is:The mode for sending alarm is:Warning message is sent to remote maintenance personnel by GPRS network.
3. the life of storage battery detects alarm method, its feature in wind-solar-diesel storage mixed DC power supply according to claim 1 It is:The Q is 10.
4. the life of storage battery detects alarm method, its feature in wind-solar-diesel storage mixed DC power supply according to claim 1 It is:The capacity threshold is 80%.
5. the life of storage battery detects alarm method, its feature in wind-solar-diesel storage mixed DC power supply according to claim 1 It is:When judging that Y is less than default capacity threshold several times, for accumulation a times or b times continuous.
6. the life of storage battery detects alarm system in a kind of wind-solar-diesel storage mixed DC power supply, it is characterised in that:It includes electric current The input of sample circuit, voltage sampling circuit, central controller and memory, wherein current sampling circuit and voltage sampling circuit End is connected to the charging current value and battery voltage value of collection storage battery with storage battery respectively, and current sampling circuit and voltage are adopted The output terminal of sample circuit is connected with central controller, is had computer program in memory and is called for central controller to perform The life of storage battery detects alarm method in wind-solar-diesel storage mixed DC power supply described in claim 1.
7. system according to claim 5, it is characterised in that:The system further includes GPRS module, connects with central controller Connect, for warning message to be sent to remote maintenance personnel by GPRS network.
CN201711194102.1A 2017-11-24 2017-11-24 Storage battery service life detection and alarm system and method in wind-light-diesel-storage hybrid direct-current power supply Active CN107991622B (en)

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CN1083595A (en) * 1992-08-05 1994-03-09 梅兰日兰公司 Measure the battery backup time method
CN1251953A (en) * 1998-10-21 2000-05-03 钟阳 Charging method for elongating service life of rechargeable battery
CN102057289A (en) * 2008-07-02 2011-05-11 松下电器产业株式会社 Life span estimation method for a lead acid battery and a power supply system
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