CN108599210A - A kind of echelon battery energy storage system and method for household photovoltaic power grid - Google Patents
A kind of echelon battery energy storage system and method for household photovoltaic power grid Download PDFInfo
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- CN108599210A CN108599210A CN201810265733.6A CN201810265733A CN108599210A CN 108599210 A CN108599210 A CN 108599210A CN 201810265733 A CN201810265733 A CN 201810265733A CN 108599210 A CN108599210 A CN 108599210A
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- echelon
- echelon battery
- battery
- battery pack
- power grid
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of echelon battery energy storage system and method for household photovoltaic power grid, the system comprises：Echelon battery pack, the echelon battery pack include multiple echelon batteries；The echelon battery pack is used to powering or storing remaining electric energy in household photovoltaic power grid to household photovoltaic power grid；Battery management unit, the battery management unit include monomer voltage detection module and data processing module；Single monomer voltage detection module is used to carry out voltage detecting to each echelon battery of echelon battery pack, and voltage detecting data are sent to data processing module；The data processing module is used to calculate the parameters of electric power of the echelon battery pack according to the detection data of reception；Two-way inverter, the two-way inverter is for connecting the echelon battery pack and household photovoltaic power grid；Monitoring unit, the monitoring unit are used to monitor in real time the echelon battery energy storage situation of the system.
Description
Technical field
The present invention relates to power battery echelons to utilize field, more particularly, to a kind of ladder for household photovoltaic power grid
Primary cell energy-storage system and method.
Background technology
As domestic electric vehicle is constantly promoted, lithium ion battery as a source of power obtains more and more extensive answer
With.Require according to standard, be eliminated as electric automobile power battery when SOC decays to 80% ± 5%, to cause compared with
The big wasting of resources, and increase power battery back pressure.So far, for dynamic lithium battery recycling because of technology
The reasons such as difficulty is big, cost recovery is high, recycling rate is few, recycling field is narrow and standard lacks always exist difficulty.
Photovoltaic generation is a kind of skill that luminous energy is directly translated into electric energy using the photovoltaic effect of interface
Art, with the progress of science, photovoltaic generation has come into the stage of household, and in a whole set of photovoltaic network system, energy-storage system
Cost it is relatively high, become a resistance in the household process of entire photovoltaic generation.
Invention content
In order to solve power battery echelon existing for background technology using field is narrow, photovoltaic generation energy-storage system high cost
Problem, the present invention provides a kind of echelon battery energy storage systems and method for household photovoltaic power grid；The method and system
By being managed monitoring to the power battery that echelon utilizes, to reach photovoltaic generation energy storage demand, realize using monitored
The echelon of management replaces the effect of photovoltaic power grid energy-storage system using battery, and energy conversion can be completed with photovoltaic power grid by providing
Echelon battery energy storage system；A kind of echelon battery energy storage system for household photovoltaic power grid includes：
Echelon battery pack, the echelon battery pack include one or more echelon batteries；The echelon battery pack be used for
Remaining electric energy in household photovoltaic power grid is powered or stored to household photovoltaic power grid；The echelon battery, which refers to, can carry out what echelon utilized
Power battery；
Battery management unit, the battery management unit include monomer voltage detection module and data processing module；It is single
Bulk voltage detection module includes voltage sensor, and the monomer voltage detection module is used for each echelon to echelon battery pack
Battery carries out voltage detecting, and voltage detecting data are sent to data processing module；The data processing module is used for basis
The detection data of reception calculates the parameters of electric power of the echelon battery pack；The parameters of electric power includes total electricity of echelon battery pack
Pressure, electric current and total electricity；
Two-way inverter, the two-way inverter are described for connecting the echelon battery pack and household photovoltaic power grid
The DC conversion of the echelon battery pack is that alternating current supplies household photovoltaic power grid, and the family is used up by two-way inverter
The AC conversion of volt power grid is that direct current is stored into the echelon battery pack.
Further, the battery management unit includes temperature detecting module and breakdown judge module；
The temperature detecting module includes temperature sensor, and the temperature detecting module is used for each of echelon battery pack
The electrode temperature of a echelon battery is detected, and the testing result is sent to the data processing module；
The electric power that the breakdown judge module is used to be calculated according to the parameter threshold and data processing module of each echelon battery
Parameter judges the fault condition of corresponding echelon battery；The fault condition include BMS failures, battery it is over-pressed, deficient
Pressure, excess temperature, deficient temperature, charging overcurrent, electric discharge overcurrent, SOC is too low, cell voltage consistency is poor and battery temperature consistency is poor；
The parameters of electric power that the data processing module calculates includes the electrode temperature of each echelon battery；
Further, the battery management unit includes alarm module；The fault condition of the breakdown judge module according to
Severity is divided into level fault and secondary failure；The fault condition that the alarm module judges breakdown judge module etc.
The case where grade is level fault carries out sound-light alarm；
Further, the system also includes monitoring units；The monitoring unit passes through network communication and the cell tube
It manages unit and carries out data exchange, monitor the echelon battery energy storage situation of the system in real time；The alarm module is used for failure
Judgment module is judged as that the information of failure is sent to monitoring unit and carries out warning reminding；
Further, multiple echelon batteries in the echelon battery pack carry out connection in series-parallel according to energy storage demand；
A kind of echelon battery energy storage method for household photovoltaic power grid includes：
The parameters of electric power of echelon battery is measured in real time, and data processing is carried out to detection data, confirms echelon electricity
Pond service condition；The parameters of electric power includes voltage, electric current and total electricity；
Available echelon battery is connected to household photovoltaic power grid by two-way inverter；
Extra electric energy in household photovoltaic power grid of the echelon battery receptacle after inversion；
The echelon battery is powered by the way that two-way inverter is homesick with photovoltaic power grid.
Further, multiple echelon batteries are subjected to connection in series-parallel and form echelon battery pack, be connected to by two-way inverter
In household photovoltaic power grid；
Further, the parameters of electric power includes electrode temperature；To the electrode temperature of echelon battery or echelon battery pack into
Row real time monitoring；It is obtained according to the parameter threshold of each echelon battery and survey calculation in the echelon battery or echelon battery pack
It obtains parameters of electric power and judges that each echelon battery whether there is fault condition；The fault condition includes BMS failures, the mistake of battery
Pressure, under-voltage, excess temperature, deficient temperature, charging overcurrent, electric discharge overcurrent, SOC is too low, cell voltage consistency is poor and battery temperature is consistent
Property is poor；
Further, to preset alarm failure has occurred the case where, carries out sound-light alarm；
Further, the energy storage situation and electric power for monitoring echelon battery or echelon battery pack in real time by network communication are joined
Number, and receive the warning message of fault condition.
Beneficial effects of the present invention are：Technical scheme of the present invention gives a kind of echelon for household photovoltaic power grid
Battery energy storage system and method, the method and system are supervised in real time by being managed monitoring to the power battery that echelon utilizes
The service condition for the power battery that control echelon utilizes realizes to reach photovoltaic generation energy storage demand and utilizes monitored management
Echelon replaces the effect of photovoltaic power grid energy-storage system using battery；On the one hand it reduces using clean energy resource (photovoltaic) into door
Sill have achieved the effect that energy-saving and emission-reduction, reduce user power utilization cost, on the other hand improve the utilizations of resources such as power battery
Rate slows down power battery return period and pressure recovery.
Description of the drawings
By reference to the following drawings, exemplary embodiments of the present invention can be more fully understood by：
Fig. 1 is a kind of structure of echelon battery energy storage system for household photovoltaic power grid of the specific embodiment of the invention
Figure；
Fig. 2 is a kind of flow of echelon battery energy storage method for household photovoltaic power grid of the specific embodiment of the invention
Figure.
Specific implementation mode
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be to disclose at large and fully
The present invention, and fully convey the scope of the present invention to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related field has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 1 is a kind of flow of echelon battery energy storage system for household photovoltaic power grid of the specific embodiment of the invention
Figure；The system, to reach photovoltaic generation energy storage demand, is realized by being managed monitoring to the power battery that echelon utilizes
The effect of photovoltaic power grid energy-storage system is replaced using battery using the echelon of monitored management, providing can complete with photovoltaic power grid
The echelon battery energy storage system of energy conversion；A kind of echelon battery energy storage system for household photovoltaic power grid includes：
Echelon battery pack 110, the echelon battery pack 110 include one or more echelon batteries；The echelon battery pack
110 for powering or storing remaining electric energy in household photovoltaic power grid to household photovoltaic power grid；The echelon battery, which refers to, to carry out
The power battery that echelon utilizes；
Further, multiple echelon batteries in the echelon battery pack 110 carry out connection in series-parallel according to energy storage demand；
The echelon battery includes lithium-ion-power cell retired on electric vehicle, the cell body that echelon battery uses
System includes LiFePO4/graphite cell, ternary material/graphite cell, LiMn2O4/graphite cell, ternary material/lithium titanate battery
Deng；
It between echelon battery, can be realized in such a way that conducting wire adds nut, can also be that the lug of battery is direct
Weld together, to realize the connection in series-parallel between battery；
The echelon battery can be the single battery obtained after the dismantling of removable battery modules, can also be can not disassemble but
The module that single battery can be tested, can also be can not disassemble can not also test single battery but there are BMS communication connect
The module of mouth；
Battery management unit 120, the battery management unit 120 include at monomer voltage detection module 121 and data
Manage module 122；Monomer voltage detection module 121 includes voltage sensor, and the monomer voltage detection module 121 is used for echelon
Each echelon battery of battery pack 110 carries out voltage detecting, and voltage detecting data are sent to data processing module 122；
The data processing module 122 is used to calculate the parameters of electric power of the echelon battery pack 110 according to the detection data of reception；It is described
Parameters of electric power includes total voltage, electric current and the total electricity of echelon battery pack 110；
Two-way inverter 130, the two-way inverter 130 is for connecting the echelon battery pack 110 and household photovoltaic
The DC conversion of the echelon battery pack 110 is that alternating current supplies household photovoltaic electric by power grid, the two-way inverter 130
Net, and be that direct current is stored into the echelon battery pack 110 by the AC conversion of the household photovoltaic power grid.
Further, the battery management unit 120 includes temperature detecting module 123 and breakdown judge module 124；
The temperature detecting module 123 includes temperature sensor, and the temperature detecting module 123 is used for echelon battery pack
The electrode temperature of 110 each echelon battery is detected, and the testing result is sent to the data processing module
122；
The temperature sensor is at least set on the anode of each battery there are one temperature point；
The breakdown judge module 124 is used to be calculated according to the parameter threshold and data processing module 122 of each echelon battery
Parameters of electric power the fault condition of corresponding echelon battery is judged；The fault condition includes BMS failures, the mistake of battery
Pressure, under-voltage, excess temperature, deficient temperature, charging overcurrent, electric discharge overcurrent, SOC is too low, cell voltage consistency is poor and battery temperature is consistent
Property is poor；
The parameters of electric power that the data processing module 122 calculates includes the electrode temperature of each echelon battery；
Further, the battery management unit 120 includes alarm module 125；The failure of the breakdown judge module 124
Situation is divided into level fault and secondary failure according to severity；The alarm module 125 judges breakdown judge module 124
Fault condition grade be level fault the case where carry out sound-light alarm；
Further, the system also includes monitoring units 140；The monitoring unit 140 by network communication with it is described
Battery management unit 120 carries out data exchange, monitors the echelon battery energy storage situation of the system in real time；The alarm module
125 by breakdown judge module 124 for being judged as that the information of failure is sent to monitoring unit 140 and carries out warning reminding；
When photovoltaic generating system stops power generation, powered at this time for customer charge by battery energy storage system, when battery energy storage system
The electric energy of system cannot be satisfied that power load requires or energy storage is when reaching discharge cut-off voltage, and city is switched to by battery energy storage system
Electricity powers for customer charge, fully ensures that customer charge normally uninterrupted electricity consumption.
Fig. 2 is a kind of flow of echelon battery energy storage method for household photovoltaic power grid of the specific embodiment of the invention
Figure；As shown in Fig. 2, the method includes：
Step 201, the parameters of electric power of echelon battery is measured in real time, and data processing is carried out to detection data, really
Recognize echelon battery service condition；The parameters of electric power includes voltage, electric current and total electricity；
Step 202, available echelon battery is connected to household photovoltaic power grid by two-way inverter；
Step 203, the extra electric energy in household photovoltaic power grid of the echelon battery receptacle after inversion；
Step 204, the echelon battery is powered by the way that two-way inverter is homesick with photovoltaic power grid.
Further, multiple echelon batteries are subjected to connection in series-parallel and form echelon battery pack, be connected to by two-way inverter
In household photovoltaic power grid；
Further, the parameters of electric power includes electrode temperature；To the electrode temperature of echelon battery or echelon battery pack into
Row real time monitoring；It is obtained according to the parameter threshold of each echelon battery and survey calculation in the echelon battery or echelon battery pack
It obtains parameters of electric power and judges that each echelon battery whether there is fault condition；The fault condition includes BMS failures, the mistake of battery
Pressure, under-voltage, excess temperature, deficient temperature, charging overcurrent, electric discharge overcurrent, SOC is too low, cell voltage consistency is poor and battery temperature is consistent
Property is poor；
Further, to preset alarm failure has occurred the case where, carries out sound-light alarm；
Further, the energy storage situation and electric power for monitoring echelon battery or echelon battery pack in real time by network communication are joined
Number, and receive the warning message of fault condition.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the disclosure
Example can be put into practice without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this description.
Those skilled in the art, which are appreciated that, to carry out adaptively the module in the equipment in embodiment
Change and they are arranged in the one or more equipment different from the embodiment.It can be the module or list in embodiment
Member or component be combined into a module or unit or component, and can be divided into addition multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it may be used any
Combination is disclosed to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so to appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint power
Profit requires, abstract and attached drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation
It replaces.Involved in this specification to the step of number be only used for distinguishing each step, and time being not limited between each step
Or the relationship of logic, restriction unless the context clearly, otherwise the relationship between each step includes various possible situations.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments means to be in the disclosure
Within the scope of and form different embodiments.For example, embodiment claimed in detail in the claims is one of arbitrary
It mode can use in any combination.
The all parts embodiment of the disclosure can be with hardware realization, or to run on one or more processors
Software module realize, or realized with combination thereof.The disclosure is also implemented as executing side as described herein
Some or all equipment or system program (for example, computer program and computer program product) of method.It is such
Realize that the program of the disclosure can may be stored on the computer-readable medium, or can be with the shape of one or more signal
Formula.Such signal can be downloaded from internet website and be obtained, and either be provided on carrier signal or with any other shape
Formula provides.
The disclosure is limited it should be noted that above-described embodiment illustrates rather than the disclosure, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.Word "comprising" is not arranged
Except there are element or steps not listed in the claims.Word "a" or "an" before element does not exclude the presence of more
A such element.The disclosure can be by means of including the hardware of several different elements and by means of properly programmed calculating
Machine is realized.If in the unit claim for listing dry systems, several in these systems can be by same
Hardware branch embodies.
The above is only the specific implementation mode of the disclosure, it is noted that for the ordinary skill people of this field
Member for, under the premise of not departing from disclosure spirit, can make several improvements, change and deform, these improve, modification,
It is regarded as falling within the scope of protection of this application with deformation.
Claims (10)
1. a kind of echelon battery energy storage system for household photovoltaic power grid, the system comprises：
Echelon battery pack, the echelon battery pack include one or more echelon batteries；The echelon battery pack is used for household
Remaining electric energy in household photovoltaic power grid is powered or stored to photovoltaic power grid；The echelon battery, which refers to, can carry out the power that echelon utilizes
Battery；
Battery management unit, the battery management unit include monomer voltage detection module and data processing module；Monomer electricity
It includes voltage sensor to press detection module, and the monomer voltage detection module is used for each echelon battery to echelon battery pack
Voltage detecting is carried out, and voltage detecting data are sent to data processing module；The data processing module is used for according to reception
Detection data calculate the parameters of electric power of the echelon battery pack；The parameters of electric power includes the total voltage of echelon battery pack, electricity
Stream and total electricity；
Two-way inverter, the two-way inverter are described two-way for connecting the echelon battery pack and household photovoltaic power grid
The DC conversion of the echelon battery pack is that alternating current supplies household photovoltaic power grid by inverter, and by the household photovoltaic electric
The AC conversion of net is that direct current is stored into the echelon battery pack.
2. system according to claim 1, which is characterized in that the battery management unit include temperature detecting module and
Breakdown judge module；
The temperature detecting module includes temperature sensor, and the temperature detecting module is used for each ladder to echelon battery pack
The electrode temperature of primary cell is detected, and the testing result is sent to the data processing module；
The parameters of electric power that the breakdown judge module is used to be calculated according to the parameter threshold and data processing module of each echelon battery
The fault condition of corresponding echelon battery is judged；The fault condition includes BMS failures, the over-pressed, under-voltage of battery, mistake
Warm, deficient temperature, charging overcurrent, electric discharge overcurrent, SOC is too low, cell voltage consistency is poor and battery temperature consistency is poor；
The parameters of electric power that the data processing module calculates includes the electrode temperature of each echelon battery.
3. system according to claim 2, it is characterised in that：The battery management unit includes alarm module；The event
The fault condition of barrier judgment module is divided into level fault and secondary failure according to severity；The alarm module sentences failure
The grade for the fault condition that disconnected module judges carries out sound-light alarm as the case where level fault.
4. system according to claim 1, which is characterized in that the system also includes monitoring units；The monitoring unit
Data exchange is carried out by network communication and the battery management unit, monitors the echelon battery energy storage feelings of the system in real time
Condition；The alarm module is used to breakdown judge module being judged as that the information of failure is sent to monitoring unit and carries out warning reminding.
5. system according to claim 1, it is characterised in that：Multiple echelon batteries in the echelon battery pack are according to storage
It can demand progress connection in series-parallel.
6. a kind of echelon battery energy storage method for household photovoltaic power grid, the method includes：
The parameters of electric power of echelon battery is measured in real time, and data processing is carried out to detection data, confirms that echelon battery makes
Use situation；The parameters of electric power includes voltage, electric current and total electricity；
Available echelon battery is connected to household photovoltaic power grid by two-way inverter；
Extra electric energy in household photovoltaic power grid of the echelon battery receptacle after inversion；
The echelon battery is powered by the way that two-way inverter is homesick with photovoltaic power grid.
7. according to the method described in claim 6, it is characterized in that：Multiple echelon batteries are subjected to connection in series-parallel and form echelon battery
Group is connected to by two-way inverter in household photovoltaic power grid.
8. the method described according to claim 6 or 7, it is characterised in that：The parameters of electric power includes electrode temperature；To echelon electricity
The electrode temperature of pond or echelon battery pack is monitored in real time；According to each echelon electricity in the echelon battery or echelon battery pack
The parameter threshold and survey calculation in pond obtain parameters of electric power and judge that each echelon battery whether there is fault condition；The failure
Situation includes BMS failures, the over-pressed, under-voltage of battery, excess temperature, owes that temperature, charging overcurrent, electric discharge overcurrent, SOC be too low, cell voltage
Consistency difference and battery temperature consistency are poor.
9. according to the method described in claim 8, it is characterized in that：The case where to preset alarm failure has occurred, carries out acousto-optic report
It is alert.
10. the method described according to claim 6 or 7, it is characterised in that：Echelon battery or ladder are monitored in real time by network communication
The energy storage situation and parameters of electric power of primary cell group, and receive the warning message of fault condition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810265733.6A CN108599210A (en) | 2018-03-28 | 2018-03-28 | A kind of echelon battery energy storage system and method for household photovoltaic power grid |
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| CN201810265733.6A CN108599210A (en) | 2018-03-28 | 2018-03-28 | A kind of echelon battery energy storage system and method for household photovoltaic power grid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058181A (en) * | 2019-05-22 | 2019-07-26 | 中国电力科学研究院有限公司 | A kind of method and system that the performance for non-disconnectable battery modules is diagnosed |
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