CN105449716B - Battery management system for contrast solar power supply unit - Google Patents
Battery management system for contrast solar power supply unit Download PDFInfo
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- CN105449716B CN105449716B CN201610012231.3A CN201610012231A CN105449716B CN 105449716 B CN105449716 B CN 105449716B CN 201610012231 A CN201610012231 A CN 201610012231A CN 105449716 B CN105449716 B CN 105449716B
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- battery
- accumulator group
- module
- supply unit
- power supply
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- 238000001816 cooling Methods 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000005955 Ferric phosphate Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229940032958 ferric phosphate Drugs 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H02J3/383—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Photovoltaic Devices (AREA)
Abstract
The present invention provides a kind of battery management system for contrast solar power supply unit, including：One accumulator group, a data acquisition module, a single battery balanced management module, a battery cooling module, a temperature management module and a control module.The present invention can carry out real-time remaining capacity monitoring to single battery, to ensure that each battery energy storage is balanced in accumulator group；The temperature of single battery can be monitored in real time, cause system to be damaged to avoid temperature is excessively high；The real time electrical quantity value that accumulator can also be provided for contrast solar power supply unit, to ensure that contrast solar power supply unit can voluntarily switch operating state.
Description
Technical field
The present invention relates to a kind of battery management systems, specifically a kind of electricity for contrast solar power supply unit
Pond manages system.
Background technology
In photovoltaic generating system, most important electrical generation components are exactly photovoltaic solar cell panels, to turn solar energy
Become electric energy.In the prior art, to support the holder of solar panel to be generally divided into fixed bracket and tracking mode holder,
Wherein, tracking mode holder is divided into as horizontal uniaxial tracking bracket, oblique uniaxial tracking bracket and tracking support with double shafts.Using tracking mode
Its direction of the solar panel of holder can generate variation with the variation of angle of incidence of sunlight so that the sunlight moment hangs down
It is directly radiated on solar panel, it is ensured that best radiation response.The solar cell module of common crystal silicon material, using double
After axis tracking technique, generated energy than fixed installation solar cell module, because different regions illumination condition difference, Ke Yiti
It is high by 30% ~ 50% or so.However, existing tracking mode holder is mostly complicated, relative to using fixed bracket high expensive,
In photovoltaic generating system cost structure, sun light tracking equipment is sometimes possibly even beyond the 20 ~ 40% of power station gross investment；Phase
30% ~ 50% generated energy is improved, there is no apparent commercial values for tracking technique, seriously hinder the business of tracking technique
Change development.
If creating a solar power plant in a certain area or newly setting a steam-electric power plant, to be directed in advance
Two different steam-electric power plants（Fixed or tracking mode）An assessment is done, by the Generation Rate number of two kinds of power generator
Change comparison, input-output ratio can be effectively calculated in conjunction with construction cost and maintenance cost, effectively to judge any side
Case is more suitable.In general, the assessment of the prior art is substantially judged by theoretic calculating, due to disturbing factor compared with
It is more, there can be larger error between gross data and real equipment data, the input-output ratio being achieved in that, which also has, to be compared
Big deviation can many times interfere the judgement of the investor, do the Scheme Choice to make mistake, cause to get half the result with twice the effort.Therefore, market
A kind of experimental contrast solar power supply unit of upper urgent need, can obtain high-precision data authentic and validly, to help
Investor makes correct Scheme Choice.
Contrast solar power supply unit mentioned by the present invention needs to realize in photovoltaic array, distribution network and load
Between realize operating mode automatic switchover, operating mode refer to photovoltaic array be load supplying, distribution network be load supply
Electricity, photovoltaic array are distribution network power supply Three models.The automatic control process, which is mainly based upon, holds the residue of accumulator group
Amount（SOC value）Variation realize, it is therefore desirable in battery management system residual capacity of the setting to accumulator group（SOC
Value）Real-time monitoring and control.
In the prior art, for cost consideration, this kind of experimental equipment common configuration is simple, small volume, generally not
It can be furtherd investigate in battery management system, therefore it sometimes appear that each battery energy storage is uneven in accumulator group, temperature
It is excessively high to lead to the technical problems such as system stalls.
And the contrast solar power supply unit mentioned by the present invention, it is not only a kind of experimental equipment, while being also one
Kind utility device, can be connected into power grid together with other steam-electric power plants, as the part in entire power station, rather than
It is used to destroy as common experimental equipment, therefore cost allows slightly to improve.Importantly, being counted in investor
During calculating input and output ratio, in addition to Generation Rate will obtain truthful data, equipment cost will also obtain truthful data.Cause
This, the experimental contrast solar power supply unit mentioned by the present invention has to and long-term running large-sized photovoltaic equipment knot
Structure is consistent, therefore also to solve that each battery energy storage is uneven in the accumulator group being likely to occur in photovoltaic apparatus, temperature is excessively high
Lead to the technical problems such as system stalls.
Invention content
The object of the present invention is to provide a kind of battery management systems for contrast solar power supply unit, existing to solve
There is in accumulator group existing for technology each battery energy storage is uneven, temperature is excessively high to lead to the technical problems such as system stalls.
In order to solve the above technical problems, the present invention provides the following technical solutions：
A kind of battery management system for contrast solar power supply unit, including：One accumulator group, storing and
Discharge electric energy；One data acquisition module is connected to the accumulator group, to acquire the operating parameter of the accumulator group, and
The operating parameter is uploaded to control module；The operating parameter includes current value, the storage by the accumulator group
In battery pack in the voltage value at each battery both ends and the accumulator group each battery ambient temperature value；One single battery is equal
Weigh management module, each battery being respectively connected in the accumulator group, to manage the energy of each single battery, makes each
Single battery balancing energy；One battery cooling module is set to around the accumulator group, to reduce an at least accumulator
Temperature；One temperature management module is connected to the single battery cooling module；To control the battery cooling module, with drop
The temperature of a low at least accumulator；And a control module, it is connected to the data acquisition module, the single battery equalizer line
Module, the temperature management module are managed, to carry out analyzing processing to the operating parameter, is computed the reality for obtaining each battery
When residual energy magnitude, send control instruction to the single battery balanced management module and the temperature equalization management module.
The data acquisition module includes：One current detecting unit is connected to the control module, passes through institute to detect
State the current value of accumulator group；An at least voltage detection unit is connected to the control module, to detect through the electric power storage
The voltage value at each battery both ends in the group of pond；And an at least temperature detecting unit, it is connected to the control module, to detect
The temperature value of each battery ambient in the accumulator group.
Further, the battery management system for contrast solar power supply unit further includes a display module,
It is connected to control module, to the operating parameter of accumulator group described in real-time display.
Further, the battery management system for contrast solar power supply unit further includes an alarm module,
When the electric current by the accumulator group exceeds predetermined threshold value beyond the temperature around predetermined threshold value or accumulator, the alarm
Module sends out alarm signal.Further, the contrast solar power supply unit, including：One fixed type photovoltaic array, to
It converts solar energy into electrical energy；One tracing type photovoltaic array, tracks sunlight incidence angle rotation, to convert solar energy into electricity
Energy；One first DC ammeter is connected to the fixed type photovoltaic array, to monitor the fixed type photovoltaic array production in real time
Raw electric current；One second DC ammeter is connected to the tracing type photovoltaic array, to monitor the tracing type photovoltaic in real time
The electric current that array generates；One first photovoltaic controller is connected to the accumulator group, to control the fixed type photovoltaic array
To the battery charging；One second photovoltaic controller is connected to the accumulator group, to control the tracing type photovoltaic
Array is to the battery charging；One off-network inverter is connected to the accumulator group, to will be described under off-network environment
The direct current of accumulator group release is transformed into alternating current；One gird-connected inverter is connected to a power distribution network busbar, in grid-connected ring
The direct current that the accumulator group discharges is transformed into alternating current under border；One first two-way switch, including a first switch are motionless
End, is connected to first DC ammeter；And a first switch moved end, be connected to first photovoltaic controller or it is described simultaneously
Net inverter；One second two-way switch, including a second switch non-moving end, are connected to second DC ammeter；And one
Two switch moved ends, are connected to second photovoltaic controller or the gird-connected inverter；One third two-way switch, including a third
Non-moving end is switched, a load is connected to；And one third switch moved end, it is female to be connected to the off-network inverter or the power distribution network
Line；Wherein, first photovoltaic controller, second photovoltaic controller control the accumulator group to the load supplying.
Further, the installed capacity phase of the installed capacity of the fixed type photovoltaic array and the tracing type photovoltaic array
Together.
Further, on the fixed type photovoltaic array photovoltaic solar cell panels arrangement mode Yu the tracking mode light
The arrangement mode of photovoltaic solar cell panels is identical on photovoltaic array.
Further, first photovoltaic controller, second photovoltaic controller are all DC/DC photovoltaic controllers, tool
Standby MPPT maximum power tracing functions, to ensure that the optimization of photovoltaic array exports.
Further, the load is charging pile, to be the charging of an at least electric vehicle.
The advantage of the invention is that：The present invention can carry out real-time remaining capacity monitoring to single battery, to ensure electric power storage
Each battery energy storage is balanced in the group of pond；The temperature of single battery can be monitored in real time, to avoid temperature it is excessively high cause be
System damage；The real time electrical quantity value that accumulator can also be provided for contrast solar power supply unit, to ensure contrast solar energy
Power supply unit can voluntarily switch operating state.
Description of the drawings
Fig. 1 is the structural schematic diagram of the preferred embodiment of the present invention；
Fig. 2 is the structural schematic diagram of contrast solar power supply unit in the preferred embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the first two-way switch in the preferred embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the second two-way switch in the preferred embodiment of the present invention；
Fig. 5 is the structural schematic diagram of third two-way switch in the preferred embodiment of the present invention；
Component mark is as follows in figure：
1, fixed type photovoltaic array, the 2, first DC ammeter, 3, tracing type photovoltaic array, the 4, second DC ammeter,
5, accumulator group, the 6, first photovoltaic controller, the 7, second photovoltaic controller, 8, off-network inverter, 9, gird-connected inverter, 10, match
Power grid busbar；
11, the first two-way switch, the 12, second two-way switch, 13, third two-way switch, 14, load；
51, data acquisition module, 52, single battery balanced management module, 53, battery cooling module, 54, temperature management mould
Block, 55, control module, 56, display module, 57, alarm module；
111, first switch non-moving end, 112, first switch moved end, 121, second switch non-moving end, 122, second switch it is dynamic
End, 131, third switch non-moving end, 132, third switch moved end；
511, current detecting unit, 512, voltage detection unit, 513, temperature detecting unit.
Specific implementation mode
A preferred embodiment of the present invention is introduced below with reference to Figure of description, proves that the present invention can be real to illustrate
It applies, these embodiments can be to the technology contents of the those of skill in the art complete description present invention so that skill of the invention
Art content is more clear and is easy to understand.However the present invention can be emerged from by many various forms of embodiments, this
The protection domain of invention is not limited only to the embodiment mentioned in text.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.When a component is described as " being connected to " another component, the two can be understood as directly " even
Connect " or a component another component " is connected to " by an intermediate module.
As shown in Figure 1, a kind of battery management system for contrast solar power supply unit, including following each portions
Part.
The present invention includes an accumulator group 5, to store and discharge electric energy；In the present embodiment, preferred ferric phosphate lithium cell,
Deposit that electricity is big, charge/discharge rates are fast, efficient.Accumulator group is equipped with a battery management system BMS, for detecting electric power storage in real time
The residual capacity of pond group（SOC value）, and sending signal control direct current, the intelligent two-way switch of exchange, realize system from and it is netted
The switching of state.
The present invention includes a data acquisition module 51, the accumulator group is connected to, to acquire the accumulator group
Operating parameter, and the operating parameter is uploaded to control module；The operating parameter includes the electricity by the accumulator group
In flow valuve, the accumulator group in the voltage value at each battery both ends and the accumulator group each battery ambient temperature value.
Data acquisition module 51 includes：One current detecting unit 511, is connected to control module 55, to detect through the accumulator
The current value of group, since each battery is all series connection, the electric current by each battery is all identical；An at least voltage detecting list
Member 512 is connected to control module 55, and each battery both ends are all equipped with a voltage detection unit 512, to detect through the storage
The voltage value at each battery both ends in battery pack；And an at least temperature detecting unit 513, it is connected to the control module, often
One battery both ends are all equipped with a temperature detecting unit 513, to detect the temperature value of each battery ambient in the accumulator group；
Current detecting unit 511, voltage detection unit 512 can be a Hall sensor, and temperature detecting unit 513 is a temperature sensing
Device.Due to remaining battery capacity value (SOC value) and accumulator voltage, charging and discharging currents, initial electro-hydraulic proportion, environment temperature
Equal the physical-chemical parameters are related, therefore, the remaining capacity value of each cell batteries can be calculated according to real time execution parameter,
That is SOC value.
The present invention includes a single battery balanced management module 52, each electricity being respectively connected in the accumulator group
Pond makes each single battery balancing energy to manage the energy of each single battery.Control module 55 calculates each monomer electricity
Corresponding data is sent to single battery balanced management module 52, so as to real-time management system by the real-time SOC value in pond in time
In each battery, keep each single battery storage energy balanced, in order to avoid there are the feelings such as a certain single battery energy storage is excessive or very few
Condition.
The invention also includes a battery cooling modules 53, are set to around the accumulator group, to reduce at least one storage
The temperature of battery.Heat sink usual in the prior art may be used in battery cooling module 53.
The present invention includes a temperature management module 54, is connected to the single battery cooling module；To control the electricity
Pond cooling module, to reduce the temperature of an at least accumulator.Temperature detecting unit 513 obtains the real time temperature number of each battery
According to, which is sent to temperature management module 54 by control module 55, when a certain battery temp is more than predetermined threshold value,
Temperature management module 54 controls battery cooling module 53 and starts, when battery temp is less than another predetermined threshold value, temperature management
Module 54 controls battery cooling module 53 and closes.
The present invention includes a control module 55, is connected to the data acquisition module, the single battery balanced management mould
Block, the temperature management module are computed to carry out analyzing processing to the operating parameter and obtain the real-time surplus of each battery
Complementary energy magnitude sends control instruction to the single battery balanced management module and the temperature equalization management module.Due to storing
Battery remaining power value (SOC value) and accumulator voltage, charging and discharging currents, initial electro-hydraulic proportion, environment temperature etc. are physico
Relating to parameters is learned, it therefore, can be according to the current value by the accumulator group, each battery both ends in the accumulator group
Initially the operations such as electro-hydraulic proportion are joined for the temperature value of each battery ambient, ferric phosphate lithium cell in voltage value and the accumulator group
Number, founding mathematical models calculate the remaining capacity value of each cell batteries, i.e. SOC value.It is of the present invention it is contrast too
Positive energy power supply unit is based on the variation of accumulator SOC value, its working condition of adjust automatically.
The invention also includes a display modules 56, are connected to control module, to the fortune of accumulator group described in real-time display
Row parameter；Display module 56 is a display screen, and each electricity in operating parameter, including the accumulator group is monitored convenient for staff
The current value in pond, voltage value, performance number, temperature value, SOC value, etc..
The invention also includes an alarm modules 57, when the electric current by the accumulator group is beyond predetermined threshold value or accumulator
When the temperature of surrounding exceeds predetermined threshold value, the alarm module sends out alarm signal.The alarm signal can be the red of flicker
Lamp or buzzer warning, to remind the timely checking monitoring of staff.
As shown in Fig. 2, contrast solar power supply unit of the present invention, including following all parts.
The contrast solar power supply unit includes a fixed type photovoltaic array 1, to convert solar energy into electrical energy；
The inclination angle of fixed type photovoltaic array 1 is changeless, and a fixed bracket is arranged in bottom, and the present embodiment is applied in upper Haiti
Area, optimum angle of incidence are 25 °, and the fixed mounting means for current most mainstream, installation cost is low, non-maintaining, highly reliable, can be with
Well and architecture-integral, it has a disadvantage in that, cannot preferably utilize sunlight, generating efficiency relatively low.The invention also includes
One first DC ammeter 2, is connected to fixed type photovoltaic array 1, to monitor the fixed type photovoltaic array generation in real time
Electric current, with the real-time Generation Rate, average Generation Rate, day Generation Rate, etc. for calculating the fixed type photovoltaic array.
The contrast solar power supply unit further includes a tracing type photovoltaic array 3, to convert solar energy into electricity
Energy；A tracking mode holder is arranged in its bottom, can be rotated with tracks sunlight incidence angle, as possible so that sunlight vertical irradiation is in photovoltaic
On component, sunlight is made full use of so that Generation Rate higher has a disadvantage in that equipment cost, maintenance cost are higher.The present invention is also
Including one second DC ammeter 4, it is connected to tracing type photovoltaic array 3, to monitor the tracing type photovoltaic array production in real time
Raw electric current, with the real-time Generation Rate, average Generation Rate, day Generation Rate, etc. for calculating the tracing type photovoltaic array.
In order to obtain the generated energy of bigger in limited installation area, the cost effectiveness of photovoltaic system, this system choosing are improved
With the efficient monocrystalline silicon components of 250W.Solar module is manufactured using raw material best in quality, too using high efficiency polysilicon
The materials such as positive electricity pond, high transparency tempered glass, EVA, TPT, anticorodal aluminium alloy frame, use advanced vacuum lamination process
And pulse welding technique manufactures solar components, it is ensured that long-life and high reliability of the product in most harsh environment.Institute
It is identical as the configuration arrangement mode of photovoltaic solar cell panels on the tracing type photovoltaic array to state fixed type photovoltaic array, respectively matches
Set the photovoltaic battery panel component that same number is one another in series.In the present embodiment, the fixed type photovoltaic array, the tracking mode light
The installed capacity of photovoltaic array is identical, and the configuration arrangement mode of the two solar panel is identical, is become apparent to compare.
The contrast solar power supply unit further includes one first photovoltaic controller 6, is connected to accumulator group 5, to
The fixed type photovoltaic array is controlled to charge to accumulator group 5；One second photovoltaic controller 7, is connected to accumulator group 5, to
The tracing type photovoltaic array is controlled to charge to accumulator group 5；First photovoltaic controller 6, the second photovoltaic controller 7 are all DC/
DC photovoltaic controllers have MPPT maximum powers to correspond to the installed capacity of fixed type photovoltaic array 1, tracing type photovoltaic array 3
Tracking function, to ensure that the optimization of photovoltaic array exports.First photovoltaic controller 6, the second photovoltaic controller 7 can also be used to
Accumulator group 5 is controlled to load supplying.
Photovoltaic controller be in solar power system, control multichannel solar cell array to accumulator charge and
Automatic control equipment of the accumulator to solar inverter load supplying.Photovoltaic controller uses high-speed CPU microprocessor and height
Precision A/D analog-digital converters are a microcomputer data acquisition and monitor control system, both can quickly acquire photovoltaic system in real time and work as
Preceding working condition obtains the job information of solar photovoltaic power plant, can accumulate the historical data of photovoltaic plant in detail, be at any time
The reasonability of assessment PV systems design and the reliability of checking system part quality provide accurate and sufficient foundation.In addition,
Photovoltaic controller also has serial communication data transfer function, and multiple photovoltaic system substations can be carried out to centralized management and remote
Control.
The contrast solar power supply unit further includes an off-network inverter 8, is connected to accumulator group 5, to from
The direct current that accumulator group 5 discharges is transformed into 220V alternating currents under net environment.The off-network environment refer to not with other distribution
In the case that net is connected, electricity generation system and load are only included.
The contrast solar power supply unit further includes a gird-connected inverter 9, is connected to a power distribution network busbar 10, to
The direct current that the accumulator group discharges is transformed into alternating current under grid-connected environment.The grid-connected environment refers to and other distribution
In the case that net is connected, including electricity generation system and power distribution network；It can also include load.
As shown in Figure 2-5, the contrast solar power supply unit further includes one first two-way switch 11, including one first
Non-moving end 111 is switched, the first DC ammeter 2 is connected to；And a first switch moved end 112, it is connected to by contact a grid-connected inverse
Become device 9 or the first photovoltaic controller 6 is connected to by contact b；One second two-way switch 12, including a second switch non-moving end
121, it is connected to the second DC ammeter 4；And a second switch moved end 122, gird-connected inverter 9 or logical is connected to by contact c
It crosses contact d and is connected to the second photovoltaic controller 7；One third two-way switch 13, including a third switch non-moving end 131,
It is connected to a load 14；And one third switch moved end 132, the power distribution network busbar is connected to by contact e or is connected by contact f
It is connected to the off-network inverter.First two-way switch 11, the second two-way switch 12, third two-way switch 13 are all led by least one
Line is connected to an automatic control system.There are many different working conditions by the present invention, all control described first by automatic control system
Two-way switch, second two-way switch, the third two-way switch come realize working condition switch, it can hereinafter be carried out
It is described in detail.
The contrast solar power supply unit can be as a kind of solar charging electric equipment for electric vehicle charging, institute
State load can be charging pile, for onboard charger of electric car provide AC power for electric installation.The present embodiment is using specially
AC energy is provided for the electric vehicle with Vehicular charger, and with corresponding logical using conduction pattern with charging interface
News, charging and function of safety protection.User can be charged by inserting coins or buying dedicated IC card for electric vehicle.
The contrast solar power supply unit is placed in a selected place（The pre- field for setting up solar power station
Ground）, then start operation.In operation, the battery management system described in the present embodiment detects the remaining of accumulator group and holds in real time
Amount（SOC value）, by automatic control system sending control signal to first two-way switch, second two-way switch, described
Third two-way switch, to realize the switching from simultaneously net state of system.
When SOC value is design maximum state, i.e., battery fully charged state, automatic control system control the first two-way switch
11 first switch moved end 112 is closed to the contacts a, and the second switch moved end 122 of the second two-way switch 12 of control is closed to c and touches
The third switch moved end 132 of point, control third two-way switch 13 is closed to the contacts f, and the photovoltaic system of the present embodiment switches to simultaneously
Net state, photovoltaic electric energy will be fed to power distribution network, and obtain electricity price income, load powered by accumulator group at this time.
When SOC value is between design maximum and minimum value, i.e., battery charging state, automatic control system control first
The first switch moved end 112 of two-way switch 11 is closed to the contacts b, and the second switch moved end 122 of the second two-way switch 12 of control is closed
Together in the contacts d, the third switch moved end 132 of control third two-way switch 13 is closed to the contacts f, and photovoltaic system switches to off-network shape
The photovoltaic array of state, the present embodiment loads powered by accumulator group at this time to battery charging.
When SOC value is design minimum state and battery crosses the state of putting, and automatic control system controls the first two-way switch
11 first switch moved end 112 is closed to the contacts b, and the second switch moved end 122 of the second two-way switch 12 of control is closed to d and touches
Point, the third switch moved end 132 of control third two-way switch 13 are closed to the contacts e, photovoltaic system off-grid operation, photovoltaic array to
Battery charging loads powered by power grid at this time.In the case that generated energy is minimum（Such as night）, direct by alternating current power distribution network
For load supplying.
Under different working modes, user can in real time be recorded by the first DC ammeter, the second DC ammeter
Current data, and real-time generated output, the average data such as generated output and daily generation are obtained accordingly.Pass through two kinds of different supports
The comparative study of scheme, user are readily available the ratio of generating efficiency under two kinds of different schemes, in general, tracing type photovoltaic
Array can improve 30%-50% relative to fixed type photovoltaic array, daily generation.In addition, user can be easy to calculate
Hardware device cost under two schemes and maintenance cost, in general, tracking mode holder is relative to fixed bracket, cost
15-40% may be improved.After two kinds of data comparisons, user is easy for may determine that and be utilized using the capital of which kind of scheme
Then rate higher can preset place and largely install fixed photovoltaic array or motion tracking solar photovoltaic battle array at this
Row.
After in all solar energy electroplax, smoothly installation is complete, the present embodiment can also be together with other steam-electric power plants
It is connected into power grid, as the part in entire power station, long-term work uses.It is believed that contrast solar power supply unit is
A kind of experimental equipment, but it is also a kind of utility device, can for a long time be used cooperatively with utility system, rather than picture
Common experimental equipment is the same, used to destroy, therefore experimental cost is relatively low, is convenient for large-scale promotion application.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (8)
1. a kind of battery management system for contrast solar power supply unit, which is characterized in that including：
One accumulator group, to store and discharge electric energy；
One data acquisition module is connected to the accumulator group, to acquire the operating parameter of the accumulator group, and will be described
Operating parameter is uploaded to control module；The operating parameter includes current value by the accumulator group, the accumulator group
In the voltage value at each battery both ends and the temperature value of each battery ambient in the accumulator group；
One single battery balanced management module, each battery being respectively connected in the accumulator group, to manage each list
The energy of body battery makes each single battery balancing energy；
One battery cooling module is set to around the accumulator group, to reduce the temperature of an at least accumulator；
One temperature management module is connected to the single battery cooling module；To control the battery cooling module, to reduce
At least temperature of an accumulator；And
One control module is connected to the data acquisition module, the single battery balanced management module, the temperature management mould
Block is computed the real-time residual energy magnitude for obtaining each battery, to the list to carry out analyzing processing to the operating parameter
The battery balanced management module of body and the temperature equalization management module send control instruction；
Wherein, the contrast solar power supply unit includes：
One fixed type photovoltaic array, to convert solar energy into electrical energy；
One tracing type photovoltaic array, tracks sunlight incidence angle rotation, to convert solar energy into electrical energy；
One first DC ammeter is connected to the fixed type photovoltaic array, to monitor the fixed type photovoltaic array in real time
The electric current of generation；
One second DC ammeter is connected to the tracing type photovoltaic array, to monitor the tracing type photovoltaic array in real time
The electric current of generation；
One first photovoltaic controller is connected to the accumulator group, to control the fixed type photovoltaic array to the electric power storage
Pond group charging；
One second photovoltaic controller is connected to the accumulator group, to control the tracing type photovoltaic array to the electric power storage
Pond group charging；
One off-network inverter is connected to the accumulator group, to the direct current for discharging the accumulator group under off-network environment
Electricity is transformed into alternating current；
One gird-connected inverter is connected to a power distribution network busbar, under grid-connected environment by the fixed type photovoltaic array or institute
The direct current for stating the release of tracing type photovoltaic array is transformed into alternating current；
One first two-way switch, including
One first switch non-moving end is connected to first DC ammeter；And
One first switch moved end is connected to first photovoltaic controller or the gird-connected inverter；
One second two-way switch, including
One second switch non-moving end is connected to second DC ammeter；And
One second switch moved end is connected to second photovoltaic controller or the gird-connected inverter；
One third two-way switch, including
One third switchs non-moving end, is connected to a load；And
One third switchs moved end, is connected to the off-network inverter or the power distribution network busbar；
Wherein, first photovoltaic controller, second photovoltaic controller control the accumulator to the load supplying.
2. being used for the battery management system of contrast solar power supply unit as described in claim 1, which is characterized in that described
Data acquisition module includes：
One current detecting unit is connected to the control module, to detect the current value by the accumulator group；
An at least voltage detection unit is connected to the control module, to detect through each battery in the accumulator group
The voltage value at both ends；And
An at least temperature detecting unit is connected to the control module, to detect each battery ambient in the accumulator group
Temperature value.
3. being used for the battery management system of contrast solar power supply unit as described in claim 1, which is characterized in that also wrap
A display module is included, control module is connected to, to the operating parameter of accumulator group described in real-time display.
4. being used for the battery management system of contrast solar power supply unit as described in claim 1, which is characterized in that also wrap
An alarm module is included, when the electric current by the accumulator group exceeds default threshold beyond the temperature around predetermined threshold value or accumulator
When value, the alarm module sends out alarm signal.
5. being used for the battery management system of contrast solar power supply unit as described in claim 1, which is characterized in that described
The arrangement mode of photovoltaic solar cell panels and photovoltaic solar-electricity on the tracing type photovoltaic array on fixed type photovoltaic array
The arrangement mode of pond plate is identical.
6. being used for the battery management system of contrast solar power supply unit as described in claim 1, which is characterized in that described
First photovoltaic controller, second photovoltaic controller are all DC/DC photovoltaic controllers, have MPPT maximum power tracing work(
Can, to ensure that the optimization of photovoltaic array exports.
7. being used for the battery management system of contrast solar power supply unit as described in claim 1, which is characterized in that described
Load is charging pile, to be the charging of an at least electric vehicle.
8. being used for the battery management system of contrast solar power supply unit as described in claim 1, which is characterized in that described
First two-way switch, second two-way switch, the third two-way switch are all connected to an automatic control by an at least conducting wire
System processed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610012231.3A CN105449716B (en) | 2016-01-11 | 2016-01-11 | Battery management system for contrast solar power supply unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012231.3A CN105449716B (en) | 2016-01-11 | 2016-01-11 | Battery management system for contrast solar power supply unit |
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| CN105449716A CN105449716A (en) | 2016-03-30 |
| CN105449716B true CN105449716B (en) | 2018-08-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109193670A (en) * | 2018-08-16 | 2019-01-11 | 广东阿尔派智能电网有限公司 | A kind of protective device and method of self-powered circuit |
| CN109581239A (en) * | 2018-11-26 | 2019-04-05 | 漳州市华威电源科技有限公司 | A kind of accumulator management device and monitoring system |
| TWI672575B (en) * | 2018-11-30 | 2019-09-21 | 旭隼科技股份有限公司 | High frequency bi-direction solar invertor energy storage system |
| CN111446737B (en) * | 2020-04-09 | 2022-05-17 | 西藏华阳供热工程服务有限公司 | Energy storage type photovoltaic off-grid power generation system for plateau and remote monitoring method |
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| JP5311153B2 (en) * | 2011-03-15 | 2013-10-09 | オムロン株式会社 | Power control apparatus and power control method |
| CN202939246U (en) * | 2012-12-03 | 2013-05-15 | 昆明绿电科技有限公司 | Device for carrying out power generation efficiency comparison test on inclined single-shaft tracking bracket and fixing bracket |
| CN203574397U (en) * | 2013-09-13 | 2014-04-30 | 嘉兴凯希电子有限公司 | Multifunctional renewable-energy power supply system |
| CN204271704U (en) * | 2014-12-18 | 2015-04-15 | 陕西赛雷博瑞新能源科技有限公司 | Based on the batteries management system of CAN |
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