CN116418021A - Single-stage energy storage power station and battery core replacement method - Google Patents
Single-stage energy storage power station and battery core replacement method Download PDFInfo
- Publication number
- CN116418021A CN116418021A CN202310483154.XA CN202310483154A CN116418021A CN 116418021 A CN116418021 A CN 116418021A CN 202310483154 A CN202310483154 A CN 202310483154A CN 116418021 A CN116418021 A CN 116418021A
- Authority
- CN
- China
- Prior art keywords
- energy storage
- battery cell
- power station
- storage power
- replaced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- 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
-
- 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
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application relates to a single-stage energy storage power station and a battery core replacement method, and relates to the field of energy storage technology, wherein the single-stage energy storage power station comprises a plurality of battery cores, a confluence device and a control device; the bus device is provided with a main circuit which is electrically connected with a plurality of branches, and the branches are directly and electrically connected with the plurality of electric cores in a one-to-one correspondence manner; the control device controls the connection or disconnection between the plurality of electric cores and the branch circuit one by one. The utility model discloses a through with conflux device direct with electric core conductive connection, have and simplify energy storage power station structure, the energy storage power station of being convenient for establishes and the effect of maintaining.
Description
Technical Field
The application relates to the field of energy storage technologies, in particular to a single-stage energy storage power station and a battery core replacement method.
Background
The electrochemical energy storage system can store and release electric energy among the power generation side, the power grid side and the user side, and has the functions of peak clipping and valley filling, peak regulation and frequency modulation and power generation and grid connection in cooperation with new energy.
The existing energy storage system scheme is generally formed by multiple layers from a battery monomer, a battery module, a battery pack and an energy storage cabinet to a container system, and the multiple layers of energy storage systems are complex in working procedures and difficult to maintain.
Disclosure of Invention
The application provides a single-stage energy storage power station and a battery core replacement method, which have the effects of simplifying an energy storage system and facilitating maintenance.
The application provides a single-stage energy storage power station, which comprises a plurality of electric cores, a converging device and a control device; the bus device is provided with a main circuit which is electrically connected with a plurality of branches, and the branches are directly and electrically connected with the plurality of electric cores in a one-to-one correspondence manner; the control device controls the connection or disconnection between the plurality of electric cores and the branch circuit one by one.
In the technical scheme, the energy storage power station uses the battery cell as the minimum unit, and the structure level is simple; after the single battery cell is abnormal, the control device controls the corresponding battery cell and the branch to cut off, so that the further out-of-control of the abnormal battery cell and the influence on other battery cells are reduced.
The application also provides a battery core replacement method of the energy storage power station, which comprises the steps of determining a battery core to be replaced; the control device controls the cut-off between the battery cell to be replaced and the branch circuit; when the discharge of the energy storage power station is cut off, taking out the battery core to be replaced and replacing the battery core with a replacement battery core; the control device controls the conduction between the replacement battery core and the branch circuit.
In the technical scheme, after an abnormality occurs in a certain cell in the use process of the energy storage power station, the control device cuts off the cell and the branch, and prevents the cell from further out of control; after the discharge is completed, replacing the battery cell, and after the replacement is completed, connecting the battery cell into a branch; the energy storage power station can replace a single electric core, and the operation of each electric core is accurately controlled.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an energy storage power station;
FIG. 2 is a schematic diagram of control logic of an energy storage power station in one embodiment.
1. A battery cell; 2. a confluence device; 21. a trunk road; 22. a branch; 221. branching cables; 222. a thimble; 23. an electrical cabinet; 24. a compression assembly; 25. a fixing seat; 26. a DC-DC converter; 3. a system controller; 4. and (5) placing a groove.
Detailed Description
The present application is further described in detail below by way of the accompanying drawings and examples. The features and advantages of the present application will become more apparent from the description.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.
The embodiment of the application discloses a single-stage energy storage power station which is used for being electrically connected with an external power grid, exchanging energy with the external power grid, storing electric energy input by the external power grid or supplying power to the external power grid and outputting the electric energy.
Referring to fig. 1, a single-stage energy storage power station comprises a plurality of electric cores 1, a converging device 2 and a control device; the bus device 2 is provided with a main circuit 21 which is electrically connected with a plurality of branch circuits 22, and the plurality of branch circuits 22 are directly and electrically connected with the plurality of battery cells 1 in a one-to-one correspondence manner; the control device controls the connection or disconnection between the plurality of battery cells 1 and the branch circuit 22 one by one.
Specifically, the electric core 1 is the minimum unit of the single-stage energy storage power station, and the number of the electric cores 1 is determined according to the scale of the single-stage energy storage power station.
The main circuit 21 of the confluence device 2 is in conductive connection with an external power grid, the branch circuit 22 is directly in conductive connection with the battery core 1, and a plurality of branch circuits 22 are connected in series or in parallel according to design requirements.
The converging device 2 is used for converging the electric energy of the plurality of electric cells 1 and outputting the electric energy to an external power grid, or is used for charging and supplementing the electric energy of the external power grid to the plurality of electric cells 1.
When the battery cell 1 is abnormal, the control device controls the corresponding battery cell 1 and the branch 22 to be cut off; after replacing the battery cell 1 with the same residual capacity state as other normal battery cells, the control device controls the battery cell 1 to be conducted with the branch 22.
Because the confluence device 2 is directly connected with the plurality of electric cores 1 in a conductive way, the control device directly controls the conduction of the plurality of electric cores 1, and the whole single-stage energy storage power station only has a single-stage system, namely, the electric cores 1 are directly guided and controlled, and a multi-stage system of a battery module, a battery pack and a battery cabinet is not required to be introduced.
The single-stage energy storage power station is built by engineering construction ideas, and the integration of the battery cell to the single-stage energy storage power station system is realized.
The materials required for the construction of the single-stage energy storage power station are reduced, the use of end plates and bus bars in the battery module is reduced, and the complexity of the system is reduced.
The single-stage energy storage power station reduces the production flow of the inherent battery module, battery pack and battery cabinet in the production of the energy storage system, and reduces the procedures of the assembly process of the battery module, the battery pack and the battery cabinet. For example, welding a composite busbar and a battery cell, installing and welding a sampling wire harness or a collecting plate in a battery module, putting the battery module into a box, assembling a battery pack management system, installing the wire harness in the battery pack, sealing a box body of the battery pack, assembling a high-voltage box in the battery pack, assembling the battery pack, and assembling a battery frame for installing and fixing the battery pack.
The material recovery of single-stage energy storage power station is convenient, and after the full life cycle of energy storage power station, electric core 1 dismantles and retrieves, and supporting confluence device 2 and controlling means accessible is debugged again and is replaced new repeatedly applied to other power stations, has increased the recoverability of system's material.
The single-stage energy storage power station does not need a battery module or a battery pack, so that industrialization can be reduced, factory land is saved, production line equipment investment is saved, production line personnel investment is saved, and the on-site rapid installation, debugging and application of the single-stage energy storage power station are realized.
The construction of the single-stage energy storage power station can reduce the transportation requirement of dangerous goods, and when the power station is built, only the battery cell 1 is needed to be transported, a battery module or a battery pack is not needed to be transported, and the requirement on a transportation unit is low.
The equipment components of the single-stage energy storage power station can adjust the position of the battery core 1 according to the requirements of the power station, the arrangement mode is flexible, the limitation of the specification of the battery module is avoided, the size of the stereoscopic warehouse of the energy storage power station can be adjusted according to the field environment, the height direction of the stereoscopic warehouse of the energy storage power station can be fully utilized, and the land resources are saved.
Referring to fig. 1, as an alternative, the branch 22 includes a branch cable 221 and a thimble 222 that are electrically connected, and the branch cable 221 is electrically connected to the trunk 21; thimble 222 is directly electrically connected to cell 1.
The busbar arrangement 2 further comprises an electrical cabinet 23 in electrically conductive connection with the main 21, the electrical cabinet 23 being intended for electrically conductive connection with an external electrical network.
Specifically, the branch cable 221 is a flexible conductive cable, the thimble 222 is a rigid conductive member, and two ends of the branch cable 221 are respectively connected with the trunk 21 and the thimble 222 in a conductive manner. Specifically, the thimble 222 may be a bar-shaped copper plate or a cylindrical aluminum rod.
The flexible branch cable 221 facilitates flexible placement of the pins 222, and the rigid pins 222 maintain a stable conductive connection with the cells 1.
The electric cabinet 23 is connected with the main road 21 and an external power grid in a conductive way, and an electric switch, a fuse and other existing electric elements are arranged in the electric cabinet 23; the electrical cabinet 23 enables a secure exchange and control of electrical energy between the main 21 and the external grid.
Referring to fig. 1, as an alternative, pins 222 are in interference conductive connection with cell 1.
Specifically, the electric core 1 is a square electric core, and two poles of the electric core 1 are positioned on the same side of the electric core 1. One cell 1 corresponds to a group of ejector pins, and one group of ejector pins is provided with two ejector pins 222, and the two ejector pins 222 are respectively connected with the positive electrode and the negative electrode of the cell 1 in a conductive manner. The two ejector pins 222 are respectively contacted and pressed with the positive electrode and the negative electrode of the battery cell 1 in a one-to-one correspondence manner, so that the conductive connection between the battery cell 1 and the ejector pins 222 is realized.
When the battery cell 1 is installed, the conductive connection between the thimble 222 and the battery cell 1 can be realized only by pressing the thimble 222 against the battery cell 1, and when the battery cell 1 is replaced and maintained, the separation between the thimble 222 and the battery cell 1 can be realized only by moving the thimble 222 to enable the interval between the thimble 222 and the battery cell 1. Compared with the welding between the thimble and the battery cell, the electric cell needs to be subjected to destructive operation when the battery cell is replaced. The scheme is convenient for replacing and maintaining the battery cell 1.
Referring to fig. 1, as an alternative, the confluence device 2 further includes a pressing assembly 24 and a fixing seat 25; the thimble 222 is fixed on the fixed seat 25; the hold down assembly 24 drives the holder 25 to move and lock in the first position. The first position is the position of the fixing seat 25 when the thimble 222 on the fixing seat 25 is in contact with the electric core 1.
Specifically, the fixing seat 25 is a strip-shaped plate, the thimble 222 is fixed on the fixing seat 25, and the fixing seat 25 moves to drive the thimble 222 to move synchronously.
The fixing seat 25 is connected with the thimble 222 in an insulating manner, and the fixing seat 25 is a plastic plate for example. A plurality of pins 222 are fixed on the fixing base 25, and illustratively, twelve pins 222 are fixed on one fixing base 25. Optionally, the number of the pins 222 fixed on one fixing seat 25 is two, four or seventy two.
The pressing assembly 24 includes a linear driving member, the linear driving member drives the fixing base 25 to move along a straight line, and the linear driving member drives the fixing base 25 to move to a first position and a second position. The second position is the position of the fixing seat 25 when the distance between the thimble 222 on the fixing seat 25 and the battery cell 1 is equal to twice the length of the battery cell 1.
The linear driving member is an air compressing cylinder, the cylinder body of the air compressing cylinder is fixed relative to the ground, and the piston rod of the air compressing cylinder is fixedly connected with the fixing seat 25. Alternatively, the linear driving member is a linear stepping motor, and the linear stepping motor drives the fixing seat 25 to move.
In other embodiments, the battery cell 1 is a cylindrical battery cell, and two electrodes of the cylindrical battery cell are respectively located at two ends. The converging device 2 comprises a supporting plate, one thimble 222 in a group of thimbles is fixedly arranged on the supporting plate, and the other thimble 222 is fixedly arranged on the fixing seat 25. The cylindricality electric core is placed in the backup pad, and the contact of an electrode of cylindricality electric core and thimble 222 in the backup pad supports the pressure, and thimble 222 on fixing base 25 is connected with the conduction that the electrode of cylindricality electric core back to the backup pad is contradicted.
The electric core 1 can be fixed according to design needs, and in order to facilitate replacement of single electric core 1, the electric cores 1 are detachably and fixedly connected.
Referring to fig. 1, as an alternative, a placement groove 4 is further included, and a plurality of cells 1 are placed snugly within the placement groove 4.
Specifically, the standing groove 4 is a rectangular groove body, the width of the inner cavity of the standing groove 4 is equal to the length of the battery cell 1, the height of the inner cavity of the standing groove 4 is equal to two thirds of the height of the battery cell 1, the length of the inner cavity of the standing groove 4 is correspondingly set with the number of pole posts on the fixing seat 25, and the length of the inner cavity of the standing groove 4 is equal to six times of the thickness of the battery cell 1 in an exemplary manner. The side wall of the cell 1 provided with the electrode is positioned outside the placing groove 4.
Six electric cores 1 are sequentially placed in the placing groove 4, the placing groove 4 can keep the stability of the six electric cores 1, the pressing assembly 24 drives the fixing seat 25 to move to the first position, and the ejector pins 222 are in conductive connection with the electric cores 1 in a propping mode. When the battery cell 1 is abnormal, the corresponding battery cell 1 is taken out, and the battery cell 1 with the same residual capacity state as other battery cells 1 is placed, so that the stable placement of the battery cell 1 can be realized.
The electric core 1 is placed in the placing groove 4, the electric core 1 is prevented from being glued and stacked, the electric core 1 is convenient and simple to replace and maintain, the single electric core 1 is damaged, and the isolation of the single electric core 1 can be realized.
Further, for the stable placement of the standing groove 4 of being convenient for, the single-stage energy storage power station still includes the support body, and the standing groove 4 uses bolt detachable fixed connection with the support body.
Referring to fig. 1, as an alternative, the single stage energy storage power station further comprises a jaw assembly and a transfer assembly. The transfer assembly drives the clamping jaw assembly to move; the clamping jaw assembly is used for clamping the battery cell 1, and the clamping jaw assembly clamps the battery cell 1 to move into the placing groove 4 or to move out of the placing groove 4.
Specifically, the clamping jaw assembly is an existing clamping jaw cylinder, the transferring assembly is an existing triaxial manipulator, the clamping jaw assembly clamps the battery cell, and the transferring assembly drives the clamping jaw assembly to move in the horizontal plane or the vertical direction. The same transferring assembly can drive the clamping jaw assembly to move to the corresponding positions of the plurality of electric cores 1.
When the pressing assembly 24 drives the fixing seat 25 to move so as to enable the thimble 222 to be spaced from the battery cell 1, the transferring assembly drives the clamping jaw assembly to move so as to enable the clamping jaw assembly to move to a position corresponding to the battery cell 1 to be replaced, the clamping jaw assembly clamps the battery cell 1, and the transferring assembly drives the clamping jaw assembly to move so as to enable the clamping jaw assembly to drive the battery cell 1 to move out of the placing groove 4; and then the battery cell 1 with the same residual capacity state as other battery cells 1 is clamped and placed in the placing groove 4 to replace the battery cell 1.
Because the single-stage energy storage power station has no module, no composite busbar is welded, and the replacement of the battery cell 1 can be realized only by independently clamping or loosening the battery cell 1. The cell 1 can be clamped repeatedly, the compression assembly 24 can be put into use after being clamped again, the whole process does not affect the use of other cells 1 and materials, the maintenance time is short, and the cost is low.
Referring to fig. 1, as an alternative, the control device includes a plurality of bypass systems connected in parallel with the plurality of battery cells 1 in one-to-one correspondence; the bypass system is used for being conducted when the corresponding battery cell 1 is abnormal, and cutting off the corresponding battery cell 1 and the branch circuit 22.
Specifically, the bypass system includes a bypass switch connected to and in parallel with two pins 222 of the same set of pins 222.
When a certain bypass system is conducted, the battery cells 1 corresponding to the bypass system are bypassed, other battery cells 1 normally operate, and further failure of the corresponding battery cells 1 is reduced.
Referring to fig. 2, as an alternative, the main circuit 21 is provided with a dc-dc converter 26 outputting a set voltage, the dc-dc converter 26 also being referred to as DCDC converter, the output of the dc-dc converter 26 being intended for connection to an external grid. The control device includes a system controller 3, and the system controller 3 controls the dc-dc converter 26 to output a stable voltage when the bypass system is turned on or off.
When in use, after a certain cell 1 is bypassed or connected to the main circuit 21 through the branch circuit 22, the system controller 3 controls the dc-dc converter 26 to adjust so that the output voltage of the dc-dc converter 26 is a set voltage.
When the control device detects that the battery cell 1 is abnormal, the system controller 3 controls the bypass system corresponding to the abnormal battery cell 1 to be conducted so as to bypass the abnormal battery cell 1, and the system controller 3 controls the direct current-direct current converter 26 to adjust so as to keep the output voltage stable.
After discharge is cut off, the pressing component 24 drives the thimble 222 to move, and the clamping jaw mechanism takes out the abnormal battery cell 1 from the placing groove 4 to replace a new battery cell 1 with the same residual capacity state as other battery cells 1. The system controller 3 controls the corresponding bypass to cut off, and the battery cell 1 is connected into the main circuit 21 through the branch circuit 22; the system controller 3 controls the dc-dc converter 26 to adjust so that the output voltage of the dc-dc converter 26 is a set voltage.
The control device also includes a battery management system, an energy management system, and a high voltage control. The battery management system monitors, evaluates, protects and equalizes the battery; the energy management system is used for controlling the energy in the power grid and maintaining the power balance of the power grid; high voltage control is control including, but not limited to, control of relays, fuses, circuit breakers.
The control device also comprises a control cabinet, and various control sampling chips for power station data processing are arranged in the control cabinet; the control sampling chip includes one or more of MCU, CPU, DSP or FPGA.
The control sampling chip is arranged in the control cabinet, so that the integration of the control sampling chip is facilitated, and the unified management of the power station is realized.
The control cabinet is also internally provided with a battery core control set and a system controller 3, the battery core controls the cutting-off of the centralized control battery core 1, the system controller is used for controlling the whole system, the sampling battery core transmits the acquired voltage, temperature and current data to the MCU, and then the systems and the battery cores at all levels are controlled; the communication mode between the cell control set and the system controller 3 is controller local area network bus communication or daisy chain communication.
The control device also comprises a single bypass control set and a sampling control assembly, wherein the single bypass control set refers to a single bypass system, and a power electronic control unit is needed. The cell bypass system is used to bypass individual cells from the series circuit. The power electronic control unit is a control unit comprising an electronic control device, and comprises a diode and an MOC tube, wherein the MOS tube is a metal-oxide-semiconductor field effect transistor, and the power electronic control unit is used for controlling a switch loop. The sampling control component is used for collecting voltage, current and temperature and transmitting the voltage, current and temperature to the processor.
The control device further comprises a plurality of detection pieces, the detection pieces are arranged in one-to-one correspondence with the battery cells 1, the control sampling chip is connected with the detection pieces in a signal mode, the detection pieces comprise but are not limited to voltage sensors, and the control sampling chip acquires state data of any battery cell 1.
Furthermore, the single-stage energy storage power station is also provided with a fire protection system, a temperature control system and a lighting system, and the system controller 3 controls the fire protection, the temperature and the lighting of the whole single-stage energy storage power station.
The application also discloses a battery core replacement method of the energy storage power station, which comprises the steps of determining a battery core to be replaced; the control device controls the cut-off between the cell to be replaced and the branch 22; when the discharge of the energy storage power station is cut off, taking out the battery core to be replaced and replacing the battery core with a replacement battery core; the control means controls the conduction between the replacement cell and the branch 22.
As an alternative, the manner of taking out the cell to be replaced and replacing it with a replacement cell is: when the discharge of the energy storage power station is cut off, the thimble 222 moves to be arranged at intervals with the cell to be replaced. The clamping jaw assembly clamps the battery cell to be replaced; the transfer assembly drives the clamping jaw assembly and the battery cell to be replaced to move, and the battery cell to be replaced is taken out. The clamping jaw assembly clamps the replacement battery cell; the transfer assembly drives the clamping jaw assembly and the replacement battery cell to synchronously move until the replacement battery cell is positioned at the position where the battery cell to be replaced is taken out. Ejector pin 222 moves the conductive connection against the replacement cell.
Further, to keep the output voltage of the electrical cabinet 23 stable, the control device controls the dc-dc converter 26 to regulate the output stable voltage when the control device controls the connection between the cell to be replaced and the branch 22. When the control device controls the replacement battery cell to be conducted between the branch circuit 22 and the main circuit 21, the control device controls the direct current-direct current converter 26 to adjust and output stable voltage.
Further, in the energy storage power station construction process, after the setting of the converging device 2 and the management system is completed, the testing of the converging device 2 and the control device is performed. And after the electric core 1 is installed and fixed in the placing groove and the bus device 2 is in conductive connection with the electric core 1, final debugging of the energy storage power station is performed.
Compared with the prior art, the device is used for debugging the battery module, the battery pack, the battery cabinet and the power station step by step, and the debugging period is relatively long. When the energy storage power station in this application is built, collection flow device 2 and management system can accomplish the debugging before electric core 1 installs, and electric core 1 installs the back, can directly carry out final debugging operation, reduces the debugging cycle after the power station installation is accomplished to shorten the construction cycle of power station.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", etc. are based on the directions or positional relationships in the working state of the present application, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless explicitly specified and limited otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The present application has been described in connection with the preferred embodiments, but these embodiments are merely exemplary and serve only as illustrations. On the basis of this, many alternatives and improvements can be made to the present application, which fall within the scope of protection of the present application.
Claims (10)
1. The single-stage energy storage power station is characterized by comprising a plurality of electric cores, a converging device and a control device;
the bus device is provided with a main circuit which is electrically connected with a plurality of branches, and the branches are directly and electrically connected with the plurality of electric cores in a one-to-one correspondence manner;
the control device controls the connection or disconnection between the plurality of electric cores and the branch circuit one by one.
2. The single stage energy storage power station of claim 1 wherein the branch includes a branch cable and a thimble in electrically conductive connection, the branch cable being in electrically conductive connection with the trunk; the thimble is directly connected with the electric core in a conductive way;
the bus device further comprises an electrical cabinet electrically connected with the trunk, and the electrical cabinet is used for being electrically connected with an external power grid.
3. The single stage energy storage power station of claim 2 wherein the pins are in abutting conductive connection with the cells.
4. The single-stage energy storage power station of claim 3, wherein the converging means further comprises a compacting assembly and a mounting base;
the thimble is fixed on the fixed seat;
the pressing assembly drives the fixing seat to move and lock at a first position, and the first position is the position of the fixing seat when the thimble on the fixing seat is in conductive connection with the electric core in a collision mode.
5. The single stage energy storage power station of any one of claims 1 to 4 further comprising a placement slot in which a plurality of said cells are snugly placed.
6. The single stage energy storage power station of claim 5, further comprising a jaw assembly and a transfer assembly; wherein,,
the transfer assembly drives the clamping jaw assembly to move;
the clamping jaw assembly is used for clamping the battery cell, and the clamping jaw assembly clamps the battery cell to move into the placing groove or out of the placing groove.
7. The single-stage energy storage power station of claim 1, wherein the control device comprises a plurality of bypass systems in one-to-one corresponding parallel connection with the plurality of cells;
the bypass system is used for being conducted when the corresponding battery cell is abnormal, and cutting off the corresponding battery cell and the branch.
8. The single-stage energy storage power station of claim 7, wherein the main circuit is provided with a dc-dc converter outputting a set voltage, and an output end of the dc-dc converter is used for being connected with an external power grid;
the control device comprises a system controller, and the system controller controls the DC-DC converter to output stable voltage when the bypass system is switched on or off.
9. A battery core replacement method of an energy storage power station is characterized in that,
determining a cell to be replaced;
the control device controls the cut-off between the battery cell to be replaced and the branch circuit;
when the discharge of the energy storage power station is finished, the battery cell to be replaced is taken out and replaced by a replacement battery cell;
and the control device controls the conduction between the replacement battery cell and the branch circuit.
10. The method of claim 9, wherein the battery cell replacement of the energy storage power station is performed,
when the discharge of the energy storage power station is cut off, the thimble moves to be arranged at intervals with the electric core to be replaced;
the clamping jaw assembly clamps the battery cell to be replaced;
the transfer assembly drives the clamping jaw assembly and the battery cell to be replaced to move, and the battery cell to be replaced is taken out;
the clamping jaw assembly clamps the replacement battery cell;
the transfer assembly drives the clamping jaw assembly and the replacement battery cell to move to a position where the battery cell to be replaced is taken out;
and the ejector pin moves to be in conductive connection with the replacement battery cell in a collision mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310483154.XA CN116418021A (en) | 2023-04-28 | 2023-04-28 | Single-stage energy storage power station and battery core replacement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310483154.XA CN116418021A (en) | 2023-04-28 | 2023-04-28 | Single-stage energy storage power station and battery core replacement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116418021A true CN116418021A (en) | 2023-07-11 |
Family
ID=87052880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310483154.XA Pending CN116418021A (en) | 2023-04-28 | 2023-04-28 | Single-stage energy storage power station and battery core replacement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116418021A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742279A (en) * | 2023-08-10 | 2023-09-12 | 江苏天合储能有限公司 | Welding-free energy storage battery system |
-
2023
- 2023-04-28 CN CN202310483154.XA patent/CN116418021A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742279A (en) * | 2023-08-10 | 2023-09-12 | 江苏天合储能有限公司 | Welding-free energy storage battery system |
| CN116742279B (en) * | 2023-08-10 | 2023-10-27 | 江苏天合储能有限公司 | Welding-free energy storage battery system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113933726A (en) | Lithium power battery formation and capacity grading series connection detection system | |
| CN116418021A (en) | Single-stage energy storage power station and battery core replacement method | |
| CN217642739U (en) | Energy storage battery system and energy storage equipment | |
| WO2023045332A1 (en) | Battery management system | |
| CN215771326U (en) | Centralized modular battery architecture | |
| CN107154666A (en) | A kind of batteries management system and electric power system | |
| CN107154665A (en) | A kind of discharge and recharge combiner and electric power system | |
| CN111969708B (en) | Battery replacement station protection system and protection method | |
| CN212162855U (en) | High-voltage distribution box for energy storage system | |
| CN208738867U (en) | A kind of control system of multiple branch circuit batteries in parallel connection system | |
| CN115390489B (en) | Modularized integrated electric drive controller and driving method thereof | |
| CN216213928U (en) | Energy storage battery cluster convenient to installation is maintained | |
| CN111525602A (en) | Energy storage system and energy storage device | |
| CN110854954A (en) | Intelligent scheduling system and scheduling method for battery cluster of energy storage system | |
| CN213459861U (en) | UPS lithium battery system architecture | |
| CN210604925U (en) | High-efficiency low-cost vehicle-mounted DCDC power supply aging equipment | |
| CN212063510U (en) | Integrated off-grid energy storage system and device | |
| CN114301126A (en) | Battery cell balancing system and method of electrochemical energy storage system | |
| CN211844309U (en) | Integrated power battery assembly and automobile | |
| CN113890159A (en) | Tray charge-discharge switching circuit | |
| CN207021734U (en) | A kind of discharge and recharge combiner and electric power system | |
| CN105429283A (en) | Power supply system for substation | |
| CN215986149U (en) | Power battery system high voltage distribution box test bench and test device | |
| CN217036768U (en) | Cell charging and discharging device adopting redundant power supply | |
| CN109274149A (en) | Electric flux switching equipment, cell apparatus and battery maintenance system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |