CN208224453U - A kind of all-vanadium flow battery management system - Google Patents
A kind of all-vanadium flow battery management system Download PDFInfo
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- CN208224453U CN208224453U CN201721863870.7U CN201721863870U CN208224453U CN 208224453 U CN208224453 U CN 208224453U CN 201721863870 U CN201721863870 U CN 201721863870U CN 208224453 U CN208224453 U CN 208224453U
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Abstract
A kind of all-vanadium flow battery management system, including battery pack, battery management unit and dc-battery administrative unit, battery pack is in series by multiple single batteries, single battery connects battery management unit, battery management unit connects dc-battery administrative unit by CAN bus, dc-battery administrative unit connects central controller by 485 buses, central controller one end connects router, the other end connects database, router connects a plurality of clients by Internet network, dc-battery administrative unit output end connects battery cathode by contactor, dc-battery administrative unit connects battery anode by current sensor.The beneficial effects of the utility model are: realizing the remote monitoring system of all-vanadium flow battery by Internet network, user terminal is without installation, real time monitoring can be realized by Web browser, interactivity is stronger, and without upgrading multiple client, upgrade central controller, it is easy to operate, it is at low cost.
Description
Technical field
The utility model belongs to technical field of battery management, more particularly, to a kind of all-vanadium flow battery management system.
Background technique
As the energy such as environmentally friendly cry grows to even greater heights, natural gas petroleum are increasingly depleted, new energy and the renewable sources of energy become two
The key subjects of eleventh century World Focusing, as the representative of new energy, wind-power electricity generation and solar power generation country energetically
Unprecedented fast development has been obtained under support.However the output of wind energy and solar energy and natural cause are closely related, it is natural
The uncertainty of factor causes output power unstable.To solve the above problems, energy storage technology is promoted in power grid, and liquid
Galvanic battery is also generally satisfactory as the amount of storage medium of energy-storage system.
In numerous chemical energy storage technologies, all-vanadium flow battery because have using safe, capacity and power can independent design,
The advantages that service life is long, Operation and Maintenance is simple, environmentally protective and be increasingly becoming research hotspot.And to realize all-vanadium flow battery energy storage
System operates normally, and needs effectively to manage and control it, but current battery management system is unable to satisfy requirement.
Utility model content
Problem to be solved in the utility model is to provide a kind of all-vanadium flow battery management system；It is especially able to satisfy multi-purpose
The all-vanadium flow battery management system of the more place real time monitorings in family.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of all-vanadium flow battery management system
System, including battery pack, battery management unit and dc-battery administrative unit, the battery pack is by multiple single batteries series connection structure
At the single battery connects the battery management unit, and the battery management unit connects the direct current by CAN bus
Pond administrative unit, the dc-battery administrative unit connect central controller by 485 buses, and described central controller one end connects
Router is connect, the other end connects database, and third end connects warning device, and the router connects more by Internet network
A user terminal, the dc-battery administrative unit output end connect the battery cathode, the dc-battery by contactor
Administrative unit connects the battery anode by current sensor；
The single battery be all-vanadium flow battery, the all-vanadium flow battery include electrode, battery diaphragm, electrolyte and
Circulating pump, the electrolyte are made of vanadium ion, and the electrolyte is divided into electrolyte liquid and anode electrolyte, the anode electricity
Liquid is solved by VO4+And VO5+Solion composition, the electrolyte liquid is by VO2+And VO3+Solion group, the electrolyte are placed in
In electrolyte tank, the circulating pump is placed between the electrolyte tank and the electrode, and battery will be in use, will by the circulating pump
The required electrolyte pushes in the battery pack, and under the action of the circulating pump, the electrolyte is each described
It is circulated in the closed circuit of electrolyte tank and the battery pack, the battery diaphragm is proton exchange membrane, the electrolyte
When flowing through electrode surface, redox reaction occurs, completes charge and discharge process；
The dc-battery administrative unit is the core of battery management system, and the dc-battery administrative unit is responsible for and institute
Battery management unit and central controller communication are stated, the dc-battery administrative unit is connected by the central controller
The database realizes that the store function of data, the dc-battery administrative unit include tension measuring circuit, current measurement electricity
Road, ambient temperature measurement circuit, electrolyte pressure measuring circuit, fault diagnosis circuit, balancing control circuit and state-of-charge inspection
Survey subsystem；
The battery management unit is the basic unit of battery management system, and the battery management unit includes single battery
Voltage collection circuit, relay switching circuit.
Further, the state-of-charge detection subsystem includes potentiometric detection sensor, difference amplifier, filter and amplification
Device, A/D converter, microprocessor and display, the potentiometric detection sensor, for measuring the electricity of the all-vanadium flow battery
Solve the positive/negative current potential of liquid；The difference amplifier, for acquiring the positive/negative current potential of the electrolyte；The filter and amplification
Device, for being filtered amplification to the positive/negative current potential；The A/D converter, for anodic potentials and cathode potential into
Row AD conversion generates anodic potentials digital signal and cathode potential digital signal respectively；The microprocessor, for it is described just
Electrode potential digital signal and cathode potential digital signal are handled, and generate state of charge of anode electrolyte value and negative electricity respectively
Solve liquid state of charge；The display, for the generation state of charge of anode electrolyte value and electrolyte liquid lotus
Electricity condition value is shown.
Further, the test side of the tension measuring circuit is pressure gauge.
Further, the test side of the ambient temperature measurement circuit is temperature sensor.
Further, the test side of the current measurement circuit is current sensor.
Further, the warning device includes alarm bell, flash lamp, printer, phone or mobile phone.
Further, the current sensor model LT-208S.
Further, the user terminal is mobile phone, PAD or computer.
The utility model has the advantages and positive effects of:
1, the utility model realizes the remote monitoring system of all-vanadium flow battery by Internet network, and user terminal is not necessarily to
Installation, can be realized real time monitoring by Web browser, can be placed directly on wide area network, be controlled by certain permission real
The now purpose of more client's access, interactivity is stronger, and without upgrading multiple client, upgrades central controller, operation letter
It is single, it is at low cost.
2, the utility model provides the electricity of the two-stage type structure with battery management unit and dc-battery administrative unit
Pond management system simultaneously divides function.The battery management system structure is simple, has stronger flexibility, facilitates the later period
Maintenance and dilatation.
3, the utility model provides a Acquisition Circuit having while acquiring multichannel cell voltage.Sample circuit choosing
It has used with parallel processing capability and a large amount of external I/O mouthfuls of FPGA as central processing unit, has realized quickly adopting for cell voltage
Collection.This method solve the problems that the time of battery voltage sampling is elongated, and to realize, quickly protection battery and other equipment are established
Basis.
4, the utility model internal communication, which uses, has stronger anti-interference, improves communication mechanism and higher communication speed
The CAN bus of rate.It ensure that the stability of communication and the accuracy of transmission data.
5, the state-of-charge inside the utility model detects subsystem, and reasonable design, easy operation, detection is accurate, error
It is smaller, it can work for the maintenance management of long-term running vanadium pile electrolyte and directive function is provided, ensure that the safety that electricity pushes away
Stable operation.
6, the utility model is designed reasonably, structure is simple, easy to operate, and intelligence degree is high.By to all-vanadium flow electricity
Pond is monitored, and carries out failure predication and intelligentized control method to it according to its operating status, to improve all-vanadium flow battery storage
Energy efficiency guarantees the safe and reliable of power supply, reduction operational management personnel labor intensity and improves working conditions, to improve energy storage
The economy of system operation.
Detailed description of the invention
Fig. 1 is the integrated connection schematic diagram of the utility model embodiment
Fig. 2 is the all-vanadium flow battery structure principle chart of the utility model embodiment
Fig. 3 is dc-battery administrative unit (DMU) structure principle chart of the utility model embodiment
Fig. 4 is the current regulating circuit diagram of the utility model embodiment
Fig. 5 is the A/D conversion circuit figure of the utility model embodiment
Fig. 6 is the ambient temperature measurement circuit figure of the utility model embodiment
Fig. 7 is the electrolyte pressure measuring circuit figure of the utility model embodiment
Fig. 8 is the balancing principle figure of the utility model embodiment
Fig. 9 is the state-of-charge detection subsystem schematic diagram of the utility model embodiment
Figure 10 is battery management unit (BMU) structure principle chart of the utility model embodiment
Specific embodiment
The utility model embodiment is described further with reference to the accompanying drawing:
As shown in Figure 1, a kind of all-vanadium flow battery management system (BMS), including battery pack, battery management unit (BMU)
With dc-battery administrative unit (DMU), battery pack is in series by multiple single batteries, and single battery connects battery management unit
(BMU), battery management unit (BMU) connects dc-battery administrative unit (DMU) by CAN bus, dc-battery administrative unit
(DMU) central controller is connected by 485 buses, central controller one end connects router, and the other end connects database, routing
Device is connected to the network a plurality of clients by Internet, and user terminal is mobile phone, PAD or computer.Dc-battery administrative unit
(DMU) output end connects battery cathode by contactor, and dc-battery administrative unit (DMU) is connected by current sensor
Battery anode；
As shown in Fig. 2, single battery is all-vanadium flow battery (VRB), all-vanadium flow battery (VRB) includes electrode, battery
Diaphragm, electrolyte and circulating pump, electrolyte are made of vanadium ion, and electrolyte is divided into electrolyte liquid and anode electrolyte, anode
Electrolyte is made of VO4+ and VO5+ solion, and electrolyte liquid is placed in electricity by VO2+ and VO3+ solion group, electrolyte
It solves in flow container, circulating pump is placed between electrolyte tank and electrode, and battery is in use, pushed to required electrolyte by circulating pump
In battery pack, under the action of circulating pump, electrolyte circulates in the closed circuit of each electrolyte tank and battery pack, electricity
Pond diaphragm is proton exchange membrane, and when electrolyte flows through electrode surface, redox reaction occurs, completes charge and discharge process；
As shown in figure 3, dc-battery administrative unit (DMU) is the core of battery management system (BMS), dc-battery management
Unit (DMU) is responsible for communicating with battery management unit (BMU) and central controller, during dc-battery administrative unit (DMU) passes through
It entreats controller to connect database, realizes the store function of data, central controller selects the dsp chip of TMS320LF28335 to make
For the core of battery management system (BMS), FPGA is as additional device.Dc-battery administrative unit (DMU) includes voltage measurement
Circuit, current measurement circuit, ambient temperature measurement circuit, electrolyte pressure measuring circuit, fault diagnosis circuit, Balance route electricity
Road and state-of-charge (SOC) detect subsystem；
Sampling charge and discharge electric current is in battery management system (BMS) safeguard protection and battery charge state (SOC) calculating
Indispensable one.When charge and discharge electric current is more than the upper limit that battery is born, will certainly cause flow battery and other equipment
Damage.The precision of current value measurement also directly influences the calculating of battery charge state (SOC), it is therefore necessary to which selecting has height
The current sensor and A/D conversion chip of precision.According to the performance and parameter of flow battery, the electric current of LEM company production is selected
Type Hall sensor model are as follows: LT-208S.Its measurement range is: 0- ± 200A, turn ratio are as follows: 1:2000, precision are as follows: ±
0.5%.
For increase signal load capacity, voltage follower is increased between the input terminal of signal and the input terminal of A/D, it
It can be improved the load capacity of signal, while playing the role of input terminal and being isolated with output end.In order to avoid due to voltage spikes and do
Measurement error caused by signal is disturbed, joined bi-directional voltage stabilizing pipe and capacitor in the input terminal of voltage follower.Current measurement circuit
As shown in Figure 4.
The model AD7656 of A/D conversion chip, it is a 16 multichannels, flash analog/digital converters, has parallel port
Transmission, ± 15VDC power supply.Sampling resistor is selected as 60 Ω/2W, and when battery charging and discharging electric current is 0-200A, sensor output
Electric current is 0- ± 0.1A, its both end voltage of sampling resistor is 0- ± 6V, and value meets the input voltage requirement of A/D chip.Fig. 5 is
The circuit diagram of AD7656.
The operating temperature of all-vanadium flow battery (VRB) and other batteries are slightly different, and working range is 0-50 DEG C, when
When environment temperature is reduced to 0 DEG C or less, the activity of electrolyte can be reduced as temperature reduces, and be likely to occur electrolyte jelly
Knot, influences the performance of battery；When temperature be higher than 50 DEG C when, electrolyte activity likewise as temperature raising and reduce, be electrolysed
There is rotten danger in liquid.Therefore monitoring battery context and the temperature of electrolyte are particularly important.
The present embodiment selects thermistor as the medium of measurement electrolyte temperature.Model PT100, -50 DEG C of range -
200℃.Temperature sampling circuit takes bridge-type temperature measurement circuit, and when thermal resistance resistance value changes, bridge output voltage also occurs
Corresponding change, bridge output voltage are sent to CPU after differential amplifier circuit, obtain actual temperature by computation of table lookup.Environment
Temperature measuring circuit is as shown in Figure 6.
For all-vanadium flow battery (VRB) in charge and discharge process, positive and negative anodes electrolyte must be under the impetus of pump, each
From fluid reservoir and half-cell circuit in circulate, the diaphragm using proton exchange membrane as battery pack.Since diaphragm is special
Thin, if the rotational speed difference of two pumps is larger, the pressure that certainly will will cause side electrolyte is larger with respect to the other side, final performance knot
Fruit is that diaphragm itself deforms, and subjects biggish pressure difference.If pressure difference further increases, the damage of diaphragm is necessarily caused
It is bad.Therefore being monitored to the pressure of electrolyte is particularly important.Common pressure measuring instruments is divided by working principle: liquid
Pressure type, flexible type, load-type and electric measuring type etc..
The utility model embodiment selects acidproof corrosion resistant pressure sensor as the device of measurement electrolyte pressure.Tool
Figure number are as follows: DAL-131, output signal are the current signal of 4-20m A, measurement range are as follows: 0-0.8MPa, supply district
For 12-36V.Electrolyte pressure measuring circuit is as shown in Figure 7:
The present embodiment carries out energy transfer as balancing element using super capacitor C, by not turning off clearance disconnected S 1, S
2,3 S, the all-vanadium flow battery for keeping energy high (VRB) 1 are transferred to super capacitor C, and super capacitor C give energy energy transfer again
Low all-vanadium flow battery (VRB) 2 finally realizes state-of-charge (SOC) balance.Balancing principle figure is as shown in Figure 8.
As shown in figure 9, state-of-charge (SOC) detection subsystem includes that potentiometric detection sensor, difference amplifier, filtering are put
Big device, A/D converter, microprocessor and display, potentiometric detection sensor, for measuring the electricity of all-vanadium flow battery (VRB)
Solve the positive/negative current potential of liquid；Difference amplifier, for acquiring the positive/negative current potential of the electrolyte；Filter amplifier is used for
Amplification is filtered to positive/negative current potential；A/D converter is given birth to respectively for being AD converted to anodic potentials and cathode potential
At anodic potentials digital signal and cathode potential digital signal；Microprocessor, for anodic potentials digital signal and negative electricity
Position digital signal is handled, and generates state of charge of anode electrolyte (SOC) value and electrolyte liquid state of charge respectively；
Display, for state of charge of anode electrolyte (SOC) value and the progress of electrolyte liquid state-of-charge (SOC) value to generation
Display.The test side of tension measuring circuit is pressure gauge.The test side of ambient temperature measurement circuit is temperature sensor.Electric current is surveyed
The test side for measuring circuit is current sensor, current sensor model LT-208S.Central controller connects warning device, report
Alarm device includes alarm bell, flash lamp, printer, phone or mobile phone.
Battery management unit (BMU) is the basic unit of battery management system (BMS), and battery management unit (BMU) includes
Monomer battery voltage Acquisition Circuit, relay switching circuit.As shown in Figure 10, the utility model embodiment selects model are as follows:
The dsp chip and model of TMS320LF28335 are as follows: core of the FPGA of EP1C6-PQFP240 collectively as battery management system
The heart.
The working principle of the utility model is: various sensors are for incuding information parameter everywhere, the operation number that will acquire
According to, central controller is transmitted to by network, after central controller processing, is stored in database, by real-time Data Transmission to user terminal,
When monitoring battery pack over-voltage, under-voltage, excess temperature, low temperature, overcurrent, alternating voltage is excessively high, too low, and a-c cycle is excessively high, too low, directly
Flow overtension, too low, current transformer overload, overheat, short circuit, radiator overheat, current transformer isolated island, DSP failure, Communications failure etc.
When failure, start warning device.Each warning device passes information to central controller, can display to warning message, filtering
And sequence, can complete to handle and simultaneously react based on the preferential horizontal, time of alarm and signal reception state, alarm report by
Managing printing machine is stored in database while output.For example, ambient temperature measurement circuit will when electrolyte temperature is excessively high
Signal is sent to central controller, and central controller starts warning device, and each user terminal will pop up warning window, printing equipment meeting
Real time print, alarm bell and call voice prompt, send Email or short message etc. to administrative staff, facilitate administrative staff's record, dimension
Shield.
The utility model has the advantages and positive effects of:
1, the utility model realizes the remote monitoring system of all-vanadium flow battery by Internet network, and user terminal is not necessarily to
Installation, can be realized real time monitoring by Web browser, can be placed directly on wide area network, be controlled by certain permission real
The now purpose of more client's access, interactivity is stronger, and without upgrading multiple client, upgrades central controller, operation letter
It is single, it is at low cost.
2, the utility model provides the electricity of the two-stage type structure with battery management unit and dc-battery administrative unit
Pond management system simultaneously divides function.The battery management system structure is simple, has stronger flexibility, facilitates the later period
Maintenance and dilatation.
3, the utility model provides a Acquisition Circuit having while acquiring multichannel cell voltage.Sample circuit choosing
It has used with parallel processing capability and a large amount of external I/O mouthfuls of FPGA as central processing unit, has realized quickly adopting for cell voltage
Collection.This method solve the problems that the time of battery voltage sampling is elongated, and to realize, quickly protection battery and other equipment are established
Basis.
4, the utility model internal communication, which uses, has stronger anti-interference, improves communication mechanism and higher communication speed
The CAN bus of rate.It ensure that the stability of communication and the accuracy of transmission data.
5, the state-of-charge inside the utility model detects subsystem, and reasonable design, easy operation, detection is accurate, error
It is smaller, it can work for the maintenance management of long-term running vanadium pile electrolyte and directive function is provided, ensure that the safety that electricity pushes away
Stable operation.
6, the utility model is designed reasonably, structure is simple, easy to operate, and intelligence degree is high.By to all-vanadium flow electricity
Pond is monitored, and carries out failure predication and intelligentized control method to it according to its operating status, to improve all-vanadium flow battery storage
Energy efficiency guarantees the safe and reliable of power supply, reduction operational management personnel labor intensity and improves working conditions, to improve energy storage
The economy of system operation.
One embodiment of the utility model is described in detail above, but the content is only the utility model
Preferred embodiment should not be considered as limiting the scope of the present invention.It is all to be made according to application scope of the utility model
All the changes and improvements etc., should still belong within the patent covering scope of the utility model.
Claims (8)
1. a kind of all-vanadium flow battery management system, including battery pack, battery management unit and dc-battery administrative unit, special
Sign is: the battery pack is in series by multiple single batteries, and the single battery connects the battery management unit, described
Battery management unit connects the dc-battery administrative unit by CAN bus, and the dc-battery administrative unit is total by 485
Line connects central controller, and described central controller one end connects router, and the other end connects database, the connection alarm of third end
Device, the router connect a plurality of clients by Internet network, and the dc-battery administrative unit output end passes through
Contactor connects the battery cathode, and the dc-battery administrative unit connects the battery pack sun by current sensor
Pole；
The single battery is all-vanadium flow battery, and the all-vanadium flow battery includes electrode, battery diaphragm, electrolyte and circulation
Pump, the electrolyte are made of vanadium ion, and the electrolyte is divided into electrolyte liquid and anode electrolyte, the anode electrolyte
By VO4+And VO5+Solion composition, the electrolyte liquid is by VO2+And VO3+Solion group, the electrolyte are placed in electrolysis
In flow container, the circulating pump is placed between the electrolyte tank and the electrode, and battery will be in use, will be required by the circulating pump
The electrolyte push in the battery pack, under the action of the circulating pump, the electrolyte is in each electrolysis
It is circulated in flow container and the closed circuit of the battery pack, the battery diaphragm is proton exchange membrane, and the electrolyte flows through
When electrode surface, redox reaction occurs, completes charge and discharge process；
The dc-battery administrative unit is the core of battery management system, and the dc-battery administrative unit is responsible for and the electricity
Pond administrative unit and central controller communication, the dc-battery administrative unit pass through described in central controller connection
Database, realizes the store function of data, the dc-battery administrative unit include tension measuring circuit, current measurement circuit,
Ambient temperature measurement circuit, electrolyte pressure measuring circuit, fault diagnosis circuit, balancing control circuit and state-of-charge detection
System；
The battery management unit is the basic unit of battery management system, and the battery management unit includes monomer battery voltage
Acquisition Circuit, relay switching circuit.
2. a kind of all-vanadium flow battery management system according to claim 1, it is characterised in that: the state-of-charge detection
Subsystem includes potentiometric detection sensor, difference amplifier, filter amplifier, A/D converter, microprocessor and display, institute
Potentiometric detection sensor is stated, the positive/negative current potential of the electrolyte for measuring the all-vanadium flow battery；The differential amplification
Device, for acquiring the positive/negative current potential of the electrolyte；The filter amplifier, for being filtered to the positive/negative current potential
Wave amplification；The A/D converter generates anodic potentials number for being AD converted to anodic potentials and cathode potential respectively
Signal and cathode potential digital signal；The microprocessor, for the anodic potentials digital signal and cathode potential number
Signal is handled, and generates state of charge of anode electrolyte value and electrolyte liquid state of charge respectively；The display is used
It is shown in the state of charge of anode electrolyte value and electrolyte liquid state of charge of the generation.
3. a kind of all-vanadium flow battery management system according to claim 1 or 2, it is characterised in that: the voltage measurement
The test side of circuit is pressure gauge.
4. a kind of all-vanadium flow battery management system according to claim 1 or 2, it is characterised in that: the environment temperature
The test side of measuring circuit is temperature sensor.
5. a kind of all-vanadium flow battery management system according to claim 1 or 2, it is characterised in that: the current measurement
The test side of circuit is current sensor.
6. a kind of all-vanadium flow battery management system according to claim 1 or 2, it is characterised in that: the warning device
Including alarm bell, flash lamp, printer, phone or mobile phone.
7. a kind of all-vanadium flow battery management system according to claim 5, it is characterised in that: the current sense type
Number be LT-208S.
8. a kind of all-vanadium flow battery management system according to claim 1, it is characterised in that: the user terminal is hand
Machine, PAD or computer.
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| CN201721863870.7U CN208224453U (en) | 2017-12-27 | 2017-12-27 | A kind of all-vanadium flow battery management system |
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| CN201721863870.7U CN208224453U (en) | 2017-12-27 | 2017-12-27 | A kind of all-vanadium flow battery management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051758A (en) * | 2017-12-27 | 2018-05-18 | 泛恩汇正（天津）科技股份有限公司 | A kind of all-vanadium flow battery manages system |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051758A (en) * | 2017-12-27 | 2018-05-18 | 泛恩汇正（天津）科技股份有限公司 | A kind of all-vanadium flow battery manages system |
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Granted publication date: 20181211 Termination date: 20191227 |