CN113067532B - Photovoltaic energy storage cabinet - Google Patents
Photovoltaic energy storage cabinet Download PDFInfo
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- CN113067532B CN113067532B CN202110338123.6A CN202110338123A CN113067532B CN 113067532 B CN113067532 B CN 113067532B CN 202110338123 A CN202110338123 A CN 202110338123A CN 113067532 B CN113067532 B CN 113067532B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 210000001503 joint Anatomy 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 22
- 244000027321 Lychnis chalcedonica Species 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 15
- 238000010248 power generation Methods 0.000 abstract description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000002441 reversible effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/20—Systems characterised by their energy storage 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
- 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
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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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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
- 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
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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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a photovoltaic power generation energy storage device, in particular to a photovoltaic energy storage cabinet.A counter-current device, a host and a plurality of superposed battery modules are sequentially arranged in a cabinet body from top to bottom, and the host is connected with the battery modules through a movable charging mechanism; the mobile charging mechanism comprises two chain wheels rotatably arranged in the cabinet body and a chain for connecting the two chain wheels, the chain is arranged along the height direction of the cabinet body, and a charging assembly in butt joint with the battery module is arranged on the chain; the power device drives the direction-changing component to work, the direction-changing component drives the walking component to run, and the walking component drives the chain wheel connected with the walking component to rotate discontinuously, so that the charging components on the chain are butted with the stacked multiple battery modules one by one, and the multiple battery modules are transmitted with electricity in equal quantity one by one; after the charging assembly transmits electricity to the battery modules one by one, the direction changing assembly changes the running direction of the walking assembly, so that the chain wheel rotates reversely and discontinuously, and the charging assembly transmits electricity to the battery modules reversely one by one in an equivalent manner.
Description
Technical Field
The invention relates to photovoltaic power generation energy storage equipment, in particular to a photovoltaic energy storage cabinet.
Background
With the attention of human beings on clean energy, the development prospect of the photovoltaic lithium battery cannot be estimated, and the photovoltaic lithium battery technology directly converts solar light energy into electric energy, so that the photovoltaic lithium battery is an inexhaustible environment-friendly energy.
The photovoltaic lithium battery system basically mainly comprises a photovoltaic inverter, a photovoltaic component, a plurality of battery modules which are connected in series, an energy storage cabinet, a battery management host and the like; most of the existing photovoltaic systems also adopt lead-acid batteries as energy storage devices, but in comparison, lithium iron phosphate batteries fully exert the advantages of the energy storage devices by replacing energy, and the advantages comprise improvement of energy storage efficiency, prolongation of service life, reduction of unit cost and the like; the lithium battery is used as an energy storage device, can improve the energy efficiency to 95 percent, far exceeds 80 percent of the traditional lead-acid battery, and has the service life of 5000 times of charge and discharge.
However, the existing photovoltaic lithium battery system still has defects in the energy storage link, and in the aspect of power transmission and energy storage, the voltage of each battery cannot be automatically balanced, so that a novel energy storage cabinet needs to be developed to solve the problem that the service life of the battery is shortened due to unbalance.
Disclosure of Invention
Based on the defects in the prior art mentioned in the background art, the invention provides the photovoltaic energy storage cabinet.
The invention overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:
a photovoltaic energy storage cabinet comprises a cabinet body and a cabinet door hinged to one side of the cabinet body, and is characterized in that a counter-current device, a host and a plurality of stacked battery modules are sequentially mounted inside the cabinet body from top to bottom, the counter-current device is electrically connected with the host, and the host is connected with the battery modules;
the photovoltaic energy storage cabinet is electrically connected with a power grid through a current output system and a grid-connected system, the current output system comprises a rectifier bridge, and the battery module outputs voltage to a reverse current device to be converted into 220V alternating current voltage and then converted into 220V direct current voltage through the rectifier bridge; the battery pack is connected with the host through a battery balancing system, the battery balancing system comprises BMS battery management modules arranged in the host, and the BMS battery management modules are used for controlling the voltage difference of each battery module;
the rear part of the cabinet body is provided with a bulge, the movable charging mechanism comprises two chain wheels rotatably mounted in the bulge at the rear part of the cabinet body and a chain for connecting the two chain wheels, the chain is arranged along the height direction of the cabinet body, a charging assembly in butt joint with the battery module is arranged on the chain, and the charging assembly comprises a lifting piece fixed on the chain, a mounting piece fixed on the lifting piece, an elastic power connection structure transversely arranged on the mounting piece and a transmission structure for driving the elastic power connection structure to act when the chain runs;
the elastic power connection structure comprises a sleeve transversely fixed on the mounting part, an expansion part horizontally sleeved with the sleeve in a sliding manner, and a pressure spring arranged in the sleeve and elastically connecting the sleeve and the expansion part;
the transmission structure comprises a walking gear which is rotatably arranged on the lifting part through a shaft, a plurality of sections of fixed racks which are fixed on the inner wall of the cabinet body along the height direction of the cabinet body, a traction wire which is wound on the shaft, and a bolt which is fixed on the telescopic part and is sleeved and fixed with the free end of the traction wire;
the charging assembly is separated from the battery module when the chain is operated and is electrically connected with the battery module when the chain is static;
the cabinet body is also internally provided with a walking assembly for driving one of the chain wheels to rotate discontinuously, and the charging assembly charges the plurality of battery modules one by one when the chain wheels rotate discontinuously; the power device is installed on one side of the rear portion protrusion of the cabinet body, the power device is connected with the walking assembly through the direction change assembly, and the direction change assembly changes the running direction of the chain after the charging assembly charges the plurality of battery modules one by one so as to charge the plurality of battery modules in a circulating mode.
As a still further scheme of the invention: the host is connected with the battery modules through a mobile charging mechanism, and the mobile charging mechanism charges the plurality of battery modules one by one.
As a still further scheme of the invention: and a guide part which is in sliding fit with the lifting part is fixed in the cabinet body along the height direction of the cabinet body.
As a still further scheme of the invention: a straight power connection block is arranged at the rear part of each battery module, and a charging connector matched with the power connection block is arranged at one end, far away from the sleeve, of the telescopic piece; the charging connector is also straight and is electrically connected with the host through a long and vertically dragged conductive wire.
As a still further scheme of the invention: the pulley that the installation piece is gone up to rotate to install with the traction wire rolls the laminating, the multistage have the clearance between the fixed rack.
As a still further scheme of the invention: the walking assembly comprises a worm rotatably arranged in the cabinet body, a worm wheel meshed with the worm and rotatably arranged in the cabinet body, and a maltese cross movement structure connected with the worm wheel through a first transmission part;
the maltese cross movement structure comprises a driving wheel and an intermittent wheel which are rotatably arranged in the cabinet body; the intermittent wheel is connected with one of the chain wheels, and the worm is connected with the direction-changing assembly.
As a still further scheme of the invention: the redirection assembly comprises a half bevel gear connected with the output end of the power device through an output shaft, a driving shaft rotatably arranged in the cabinet body, and two full bevel gears fixed on the driving shaft;
half bevel gear has tooth along the circumferencial direction half, and half is smooth, and its part that has tooth is with two full bevel gear adaptations, the drive connection the worm.
As a still further scheme of the invention: the driving shaft is connected with the worm through a first range extending structure, and the intermittent wheel is connected with one of the chain wheels through a second range extending structure;
the first range extending structure comprises a large gear fixed on the driving shaft and a small gear fixed on the worm and meshed with the large gear.
As a still further scheme of the invention: the second range increasing structure comprises a speed increasing wheel coaxially fixed with the intermittent wheel and a second transmission piece connected with the speed increasing wheel and one of the chain wheels.
As a still further scheme of the invention: the rectifier bridge, the inverter and the battery module form a grid-connected system, the grid-connected system further comprises a DC/DC converter, and the grid-connected system is electrically connected with a power grid through a transformer;
the battery module outside is provided with the soaking plate surface cladding has to inhale and shakes and steep the cotton the bottom of the cabinet body is installed retractable gyro wheel.
After adopting the structure, compared with the prior art, the invention has the following advantages: after the photovoltaic module absorbs the light energy, the photovoltaic effect of a semiconductor interface is utilized to directly convert the light energy into electric energy, direct current is converted into alternating current by means of an inverter, the alternating current is boosted and transmitted to a host, meanwhile, a power device drives a direction changing module to work, the direction changing module drives a walking module to operate, the walking module drives a chain wheel connected with the walking module to rotate discontinuously, so that a plurality of battery modules stacked on a chain are butted one by one, and the plurality of battery modules are transmitted with electricity in an equivalent manner one by one; after the subassembly that charges transmits electricity one by one to a plurality of battery module, change the moving direction that the subassembly changed walking subassembly to make the reverse intermittent rotation of sprocket, the subassembly that charges is again to the reverse equivalent transmission of electricity one by one of a plurality of battery module, so reciprocal transmits electricity to each battery module, thereby reaches the effect of the voltage of every battery module of automatic balance, solves the life-span shortening problem that the battery banked up the electricity imbalance and caused, the effectual system fault that has reduced, has improved the charge-discharge number of times.
Drawings
Fig. 1 is a front view of a photovoltaic energy storage cabinet.
Fig. 2 is a cross-sectional view of the photovoltaic energy storage cabinet with the inverter, the host and the battery module removed.
Fig. 3 is a schematic structural diagram of a cabinet body in a photovoltaic energy storage cabinet.
Fig. 4 is a partial schematic view of a mobile charging mechanism in a photovoltaic energy storage cabinet.
Fig. 5 is an enlarged view of a portion a in fig. 4.
Fig. 6 is a schematic structural diagram of a lifting member and an installation member in the photovoltaic energy storage cabinet.
In the figure: 1-a cabinet body; 2-a cabinet door; 3-a reverse electric appliance; 4-a host; 5-a battery module; 6-a power plant; 7-half bevel gear; 8-full bevel gear; 9-a drive shaft; 10-big gear wheel; 11-a pinion gear; 12-a worm; 13-a worm gear; 14-transmission member number one; 15-driving wheel; 16-a batch wheel; 17-a speed-up wheel; 18-transmission part number two; 19-a sprocket; 20-a chain; 21-a lifting member; 22-a mounting; 23-a walking gear; 24-fixed rack; 25-around the shaft; 26-drawing wires; 27-a pulley; 28-studs; 29-a telescopic member; 30-a sleeve; 31-a pressure spring; 32-a charging connector; 33-a power connection block; 34-a guide member.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 6, in an embodiment of the present invention, a photovoltaic energy storage cabinet includes a cabinet body 1 and a cabinet door 2 hinged to one side of the cabinet body 1, wherein a counter-current device 3, a host 4, and a plurality of stacked battery modules 5 are sequentially installed inside the cabinet body 1 from top to bottom, the counter-current device 3 is electrically connected to the host 4, and the host 4 is connected to the battery modules 5;
the photovoltaic energy storage cabinet is connected with the inverter 3 through a current output system, the current output system comprises a rectifier bridge, and the battery module 5 outputs voltage to the inverter 3 to be converted into 220V alternating voltage, and then the alternating voltage is converted into 220V direct voltage through the rectifier bridge;
the battery pack is composed of a plurality of battery modules 5 and is connected with the host machine 4 through a battery equalization system, the battery equalization system comprises a BMS battery management module arranged in the host machine 4, and the BMS battery management module is used for controlling the voltage difference of each battery module 5.
As an illustration of the embodiment, after the photovoltaic module absorbs the light energy, the photovoltaic effect of the semiconductor interface is utilized to directly convert the light energy into the electric energy, and the inverter 3 is utilized to convert the direct current into the alternating current and raise the voltage to be transmitted to the host 4;
the battery balancing system realizes battery balancing through the BMS management module to prolong the service life of the battery; in detail, the battery pack is composed of a plurality of battery cells (battery modules 5), the voltage difference of each battery cell is controlled by the BMS battery management module, and the capacity of the battery pack does not reach the standard if the battery pack is not balanced due to the fact that the battery pack is composed of the plurality of battery cells but internal resistance and the voltage difference exist among the battery cells; the larger the pressure difference of each string of cells of the battery pack is, the smaller the practical capacity of the battery pack can be used.
In one embodiment of the present invention, the host 4 is connected to the battery modules 5 through a mobile charging mechanism, which charges the plurality of battery modules 5 one by one, so as to balance the voltages of the plurality of battery modules 5; the rear part of the cabinet body 1 is provided with a bulge, the movable charging mechanism comprises two chain wheels 19 rotatably mounted in the bulge at the rear part of the cabinet body 1 and a chain 20 used for connecting the two chain wheels 19, the chain 20 is arranged along the height direction of the cabinet body 1, a charging assembly in butt joint with the battery module 5 is arranged on the chain 20, the charging assembly is separated from the battery module 5 when the chain 20 runs, and is electrically connected with the battery module 5 when the chain 20 is static;
specifically, a walking assembly for driving one of the chain wheels 19 to rotate intermittently is further arranged in the cabinet body 1, and the charging assembly charges the plurality of battery modules 5 one by one when the chain wheel 19 rotates intermittently; the power device 6 is installed to the protruding one side in rear portion of the cabinet body 1, power device 6 connects through the redirection subassembly the walking subassembly, redirection subassembly changes the traffic direction of chain 20 after the subassembly charges a plurality of battery module 5 one by one at the charging subassembly to charge a plurality of battery module 5 circulation.
As the description of the embodiment, the power device 6 drives the direction-changing component to work, the direction-changing component drives the traveling component to operate, and the traveling component drives the chain wheel 19 connected with the traveling component to rotate discontinuously, so that the charging components on the chain 20 are butted with the stacked multiple battery modules 5 one by one, and the multiple battery modules 5 are transmitted with electricity in equal quantity one by one; after the charging assembly transmits electricity to the plurality of battery modules 5 one by one, the direction change assembly changes the running direction of the walking assembly, so that the chain wheel 19 rotates reversely and discontinuously, the charging assembly transmits electricity to the plurality of battery modules 5 reversely and equivalently one by one, and the electricity is transmitted to each battery module 5 in a reciprocating manner, so that the effect of automatically balancing the voltage of each battery module is achieved, the problem of service life shortening caused by unbalanced electricity storage of the batteries is solved, system faults are effectively reduced, and the charging and discharging times are improved.
For the sake of understanding, the power unit 6 is an electric motor, preferably of the AC-motorren type, but it can be equally replaced by a motor of corresponding power, including a pneumatic or hydraulic motor.
In addition, in this embodiment, the inverter and the host are applications in the prior art, and the inverter is also referred to as an inverter, which is not described in the present invention.
In addition, in this embodiment, be provided with the lock on the cabinet door 2, be fixed with at the edge of cabinet door 2 be used for with 1 complex joint strip of the cabinet body to play sealed isolated effect, avoid rainwater or dust to enter into in the cabinet body 1.
In one embodiment of the present invention, the charging assembly includes a lifting member 21 fixed on the chain 20, a mounting member 22 fixed on the lifting member 21, an elastic power receiving structure transversely disposed on the mounting member 22, and a transmission structure for driving the elastic power receiving structure to move when the chain 20 runs;
wherein, a guide piece 34 which is slidably sleeved with the lifting piece 21 is fixed in the cabinet body 1 along the height direction;
as an illustration of the embodiment, when the chain 20 runs, the transmission structure drives the elastic power connection structure to operate, so as to disconnect the power from the battery module 5; when the chain 20 is at rest, the transmission structure does not run any more, and the elastic power connection structure is released under the action of the elastic force and is butted with the next battery module 5, so that power is transmitted to the plurality of stacked battery modules 5 one by one.
It should be noted that the lifting member 21 is in a through-tube shape, and a pin shaft connected to a link of the chain 20 is arranged on the lifting member 21, so that when the chain 20 runs, the lifting member 21 can be driven to vertically lift along the height direction of the cabinet body 1, and the lifting member 21 is kept stable in the horizontal direction by matching with the guide member 34, and finally, the mounting member 22 and the elastic electrical connection structure thereon are stable.
In another embodiment of the present invention, the elastic power connection structure includes a sleeve 30 fixed transversely on the mounting member 22, a telescopic member 29 horizontally slidably sleeved with the sleeve 30, and a compression spring 31 disposed in the sleeve 30 and elastically connecting the sleeve 30 and the telescopic member 29;
note that a straight power receiving block 33 is arranged at the rear part of each battery module 5, and a charging connector 32 matched with the power receiving block 33 is installed at one end of the telescopic member 29 away from the sleeve 30; the charging connector 32 is also straight, and the charging connector 32 is electrically connected with the host 4 through a long and vertically dragged conducting wire;
as an illustration of the embodiment, when the charging connector 32 moves up and down to a position corresponding to the power receiving block 33 following the mounting member 22, the elastic member 29 is driven by the elastic force of the compressed spring 31 to release from the sleeve 30, so that the power receiving block 33 is connected with the charging connector 32, and at this time, the main machine 4 transmits power to the battery module 5 through the conductive wire;
and when the charging connector 32 moves up and down along with the mounting part 22, the transmission structure is utilized to drive the telescopic part 29 to retract into the sleeve 30 and further compress the pressure spring 31, at the moment, the charging connector 32 is far away from the electricity receiving block 33 and vertically moves until the next electricity receiving block 33 is moved to correspond to the charging connector 32, and the transmission structure releases the telescopic part 29.
In a further embodiment of the present invention, the transmission structure comprises a traveling gear 23 mounted on the lifting member 21 by rotating around a shaft 25, a plurality of sections of fixed racks 24 fixed on the inner wall of the cabinet 1 along the height direction of the cabinet 1, a pull wire 26 wound around the shaft 25, and a bolt 28 fixed on the telescopic member 29 and sleeved with the free end of the pull wire 26;
a pulley 27 which is in rolling fit with the traction wire 26 is rotatably arranged on the mounting part 22, and gaps are formed among the multiple sections of the fixed racks 24;
as the description of the embodiment, when the chain 20 runs, the lifting piece 21 and the mounting piece 22 are driven to lift, the walking gear 23 is driven to lift along with the lifting when the mounting piece 22 lifts, the lifted walking gear 23 is meshed with the fixed rack 24, so that the walking gear 23 rotates when lifting, and the rotating walking gear 23 drives the shaft 25 to rotate;
when the charging connector 32 moves up and down to a position corresponding to the power connection block 33, the walking gear 23 is located at a gap between two sections of the fixed gear racks 24, at the moment, the walking gear 23 is not restrained by the fixed gear racks 24, the telescopic part 29 is driven to be ejected out of the sleeve 30 by the elasticity of the pressure spring 31, the charging connector 32 is in butt joint with the power connection block 33, power is transmitted to the battery module 5 at the position, and the traction wire 26 wound on the shaft 25 is completely ejected;
when the chain 20 runs to drive the charging connector 32 to move up and down, the walking gear 23 starts to be combined with the lower-section fixed rack 24, the walking gear 23 rotates to drive the winding shaft 25 to synchronously rotate to wind the traction wire 26 again, and the traction wire 26 drives the bolt 28 and the charging connector 32 to be far away from the power connection block 33, so that the telescopic part 29 is sleeved into the sleeve 30 and further compresses the pressure spring 31; and when the charging connector 32 moves to the next power connection block 33, the walking gear 23 is positioned in the gap between the other two sections of the fixed gear racks 24, and the traction wire 26 is released again.
In another embodiment of the invention, the walking assembly comprises a worm 12 rotatably arranged in the cabinet 1, a worm wheel 13 meshed with the worm 12 and rotatably arranged in the cabinet 1, and a maltese cross movement structure connected with the worm wheel 13 through a first transmission piece 14;
the maltese cross movement structure comprises a driving wheel 15 and an intermittent wheel 16 which are rotatably arranged in the cabinet body 1; the intermittent wheel 16 is connected with one of the chain wheels 19, and the worm 12 is connected with the redirection assembly;
it is particularly emphasized that the maltese cross movement structure is an application of the prior art, belongs to an intermittent cam transmission mechanism, and is not described in detail in the invention, and of course, the maltese cross movement structure in the invention can be replaced by a cam divider;
further, in the present embodiment, in which the division ratio of the intermittent wheel 16 is the same as the number of the battery modules 5, an example of six battery modules 5 and the division ratio of the intermittent wheel 16 of 6;
as the description of the embodiment, when the power device 6 works, the redirecting component is driven to act, the redirecting component drives the worm 12 to rotate, the worm 12 drives the worm wheel 13 to rotate, the first transmission piece 14 drives the driving wheel 15 to rotate, and the driving wheel 15 drives the intermittent wheel 16 to rotate, so that the chain wheel 19 rotates discontinuously.
In a further embodiment of the invention, the redirecting assembly comprises a half bevel gear 7 connected with the output end of the power device 6 through an output shaft, a driving shaft 9 rotatably installed in the cabinet body 1, and two full bevel gears 8 fixed on the driving shaft 9;
half of the half bevel gear 7 is provided with teeth along the circumferential direction, the other half of the half bevel gear is smooth, the part with the teeth is matched with two full bevel gears 8, and the driving shaft 9 is connected with the worm 12;
as an illustration of the present embodiment, when the power device 6 is in operation, the output shaft and the half bevel gear 7 are driven to rotate, the portion of the half bevel gear 7 having teeth intermittently drives the two full bevel gears 8 to rotate, thereby driving the driving shaft 9 to intermittently rotate clockwise and counterclockwise, and the driving shaft 9 drives the worm 12 to intermittently rotate clockwise and counterclockwise.
In order to ensure that the one-way lifting height of the charging connector 32 can meet the stacking height of a plurality of battery modules 5, in a further embodiment of the invention, the driving shaft 9 is connected with the worm 12 through a first range-increasing structure, and the intermittent wheel 16 is connected with one of the chain wheels 19 through a second range-increasing structure;
the first range extending structure comprises a gearwheel 10 fixed on the driving shaft 9 and a pinion 11 fixed on the worm 12 and meshed with the gearwheel 10;
as a description of the present embodiment, the half bevel gear 7 with a larger size is used in cooperation with the full bevel gear 8 with a smaller size to increase the unidirectional rotation stroke of the driving shaft 9, and then the large gear 10 and the small gear 11 are used to increase the unidirectional rotation stroke of the worm gear 13, so that the driving wheel 15 can rotate for multiple turns, the number of unidirectional rotation turns of the driving wheel 15 is ensured to correspond to the division number on the intermittent wheel 16, and the unidirectional transmission distance corresponds to the distance between the plurality of battery modules 5.
In a further embodiment of the invention, the second range increasing structure comprises a speed increasing wheel 17 fixed coaxially with the intermittent wheel 16 and a transmission member number two 18 connecting the speed increasing wheel 17 with one of the chain wheels 19;
as the description of the embodiment, the driving wheel 15 rotates one circle to drive the intermittent wheel 16 to rotate a smaller angle, in the drawing of the present invention, since there are six battery modules 5, the division ratio of the intermittent wheel 16 is 1.
In another embodiment of the present invention, the rectifier bridge, the inverter 3, and the battery module 5 form a grid-connected system, the grid-connected system further includes a DC/DC converter, and the grid-connected system is electrically connected to a power grid through a transformer;
a soaking plate is arranged outside the battery module 5, the surface of the soaking plate is coated with shock-absorbing foam, and retractable rollers are arranged at the bottom of the cabinet body 1;
the solar cell array is connected with a DC/AC inverter through a DC/DC converter, and then is in bidirectional electrical connection with a power grid through a transformer, and the DC/AC inverter is electrically connected with an alternating current load to form a complete grid-connected system;
the grid-connected system can convert the direct current output by the solar cell array into alternating current with the same amplitude, the same frequency and the same phase as the voltage of a power grid, and realize the connection with the power grid and the transmission of electric energy to the power grid; when the solar cell array can not provide enough electric energy for the load, the electric energy can be taken from the power grid to supply power for the load; the shock absorption and the heat dissipation of the battery are realized through shock absorption foam and the soaking plate, and the retractable idler wheels are convenient to move and place the whole cabinet body 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Claims (10)
1. A photovoltaic energy storage cabinet comprises a cabinet body (1) and a cabinet door (2) hinged to one side of the cabinet body (1), and is characterized in that a counter-current device (3), a host (4) and a plurality of stacked battery modules (5) are sequentially installed inside the cabinet body (1) from top to bottom, the counter-current device (3) is electrically connected with the host (4), and the host (4) is connected with the battery modules (5);
the photovoltaic energy storage cabinet is electrically connected with a power grid through a current output system and a grid-connected system, the current output system comprises a rectifier bridge, and the battery module (5) outputs voltage to the inverter (3) to be converted into 220V alternating voltage and then converted into 220V direct voltage through the rectifier bridge; the battery pack is composed of a plurality of battery modules (5), the battery pack is connected with the host (4) through a battery equalization system, the battery equalization system comprises BMS battery management modules arranged in the host (4), and the BMS battery management modules are used for controlling the voltage difference of each battery module (5);
the rear part of the cabinet body (1) is provided with a bulge, the movable charging mechanism comprises two chain wheels (19) rotatably mounted in the bulge at the rear part of the cabinet body (1) and a chain (20) used for connecting the two chain wheels (19), the chain (20) is arranged along the height direction of the cabinet body (1), a charging assembly in butt joint with the battery module (5) is arranged on the chain (20), and the charging assembly comprises a lifting piece (21) fixed on the chain (20), a mounting piece (22) fixed on the lifting piece (21), an elastic power connection structure transversely arranged on the mounting piece (22) and a transmission structure used for driving the elastic power connection structure to act when the chain (20) runs;
the elastic power connection structure comprises a sleeve (30) transversely fixed on the mounting part (22), an expansion part (29) horizontally sleeved with the sleeve (30) in a sliding mode, and a pressure spring (31) arranged in the sleeve (30) and elastically connected with the sleeve (30) and the expansion part (29);
the transmission structure comprises a walking gear (23) which is rotatably arranged on the lifting part (21) through a shaft (25), a plurality of sections of fixed racks (24) which are fixed on the inner wall of the cabinet body (1) along the height direction of the cabinet body (1), a traction wire (26) which is wound on the shaft (25), and a bolt column (28) which is fixed on the telescopic part (29) and is sleeved and fixed with the free end of the traction wire (26);
the charging assembly is separated from the battery module (5) when the chain (20) is running and is electrically connected with the battery module (5) when the chain (20) is static;
a walking assembly used for driving one of the chain wheels (19) to rotate intermittently is further arranged in the cabinet body (1), and the charging assembly charges the plurality of battery modules (5) one by one when the chain wheels (19) rotate intermittently; the power device (6) is installed on one side of the rear portion protrusion of the cabinet body (1), the power device (6) is connected with the traveling assembly through the direction change assembly, and the direction change assembly changes the running direction of the chain (20) after the charging assembly charges the plurality of battery modules (5) one by one so as to circularly charge the plurality of battery modules (5).
2. A photovoltaic energy storage cabinet according to claim 1, wherein the main machine (4) is connected to the battery modules (5) by a mobile charging mechanism, and the mobile charging mechanism charges a plurality of the battery modules (5) one by one.
3. The photovoltaic energy storage cabinet according to claim 1, wherein a guide member (34) slidably sleeved with the lifting member (21) is fixed in the cabinet body (1) along the height direction of the cabinet body.
4. The photovoltaic energy storage cabinet according to claim 1, wherein a straight power connection block (33) is arranged at the rear part of each battery module (5), and a charging connector (32) matched with the power connection block (33) is arranged at one end of the telescopic piece (29) far away from the sleeve (30); the charging connector (32) is also flat and straight, and the charging connector (32) is electrically connected with the host (4) through a long and vertically dragged conducting wire.
5. The photovoltaic energy storage cabinet as claimed in claim 1, wherein the mounting member (22) is rotatably provided with a pulley (27) which is in rolling fit with the traction wire (26), and a gap is formed between the plurality of sections of the fixed rack (24).
6. The photovoltaic energy storage cabinet according to claim 1, wherein the walking assembly comprises a worm (12) rotatably arranged in the cabinet body (1), a worm wheel (13) engaged with the worm (12) and rotatably arranged in the cabinet body (1), and a maltese cross movement structure connected with the worm wheel (13) through a first transmission member (14);
the maltese cross movement structure comprises a driving wheel (15) and an intermittent wheel (16) which are rotatably arranged in the cabinet body (1); the intermittent wheel (16) is connected with one of the chain wheels (19), and the worm (12) is connected with the redirection assembly.
7. The photovoltaic energy storage cabinet according to claim 6, wherein the redirection assembly comprises a half bevel gear (7) connected with the output end of the power device (6) through an output shaft, a driving shaft (9) rotatably installed in the cabinet body (1), and two full bevel gears (8) fixed on the driving shaft (9);
half bevel gear (7) have the tooth along the circumferencial direction half, and half is smooth, and its part that has the tooth is with two full bevel gear (8) adaptations, drive shaft (9) are connected worm (12).
8. A photovoltaic energy storage cabinet according to claim 7, characterized in that the driving shaft (9) is connected with the worm (12) through a first range-extending structure, and the intermittent wheel (16) is connected with one of the chain wheels (19) through a second range-extending structure;
the first range extending structure comprises a large gear (10) fixed on the driving shaft (9) and a small gear (11) fixed on the worm (12) and meshed with the large gear (10).
9. The photovoltaic energy storage cabinet according to claim 8, wherein the second range extending structure comprises a speed increasing wheel (17) coaxially fixed with the intermittent wheel (16) and a second transmission piece (18) connecting the speed increasing wheel (17) with one of the chain wheels (19).
10. The photovoltaic energy storage cabinet according to claim 1, wherein the rectifier bridge, the inverter (3) and the battery module (5) form a grid-connected system, the grid-connected system further comprises a DC/DC converter, and the grid-connected system is electrically connected with a power grid through a transformer;
the solar energy storage cabinet is characterized in that a soaking plate is arranged outside the battery module (5), the surface of the soaking plate is coated with shock-absorbing foam, and retractable rollers are mounted at the bottom of the cabinet body (1).
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| CN202110338123.6A CN113067532B (en) | 2021-03-30 | 2021-03-30 | Photovoltaic energy storage cabinet |
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| CN202110338123.6A CN113067532B (en) | 2021-03-30 | 2021-03-30 | Photovoltaic energy storage cabinet |
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| CN116317838B (en) * | 2023-05-24 | 2023-08-25 | 安徽元横能源科技有限公司 | Intelligent photovoltaic electric energy storage system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882803A (en) * | 2010-06-11 | 2010-11-10 | 李小平 | Balanced management system of series battery pack on basis of capacitance and management method thereof |
| CN101895135A (en) * | 2010-06-11 | 2010-11-24 | 李小平 | Balanced management system for series connected battery pack based on auxiliary battery and management method thereof |
| CN102244405A (en) * | 2011-07-12 | 2011-11-16 | 苏州盖娅智能科技有限公司 | Control method of solar charging of accumulator battery |
| CN103178620A (en) * | 2013-02-19 | 2013-06-26 | 辽宁凯信新能源技术有限公司 | Mobile photovoltaic power generation and off-peak electricity energy storage control system for lithium batteries |
| CN103715728A (en) * | 2012-10-06 | 2014-04-09 | 李雄业 | Equalization circuit and device for series-connected battery pack |
| CN206865212U (en) * | 2017-04-13 | 2018-01-09 | 深圳市华宝新能源股份有限公司 | A kind of safe energy storing and electricity generating rack of family solar energy |
| CN112134305A (en) * | 2020-09-28 | 2020-12-25 | 电管家集团有限公司 | Photovoltaic energy storage all-in-one machine based on lithium iron phosphate battery and application thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847598A (en) * | 2018-07-26 | 2018-11-20 | 钟乘凤 | A kind of distribution box with multi-faceted wind-blowing heat-dissipating function |
| CN108909512A (en) * | 2018-07-26 | 2018-11-30 | 张勤 | A kind of annular up-down intelligent automatic butt new-energy automobile charging system |
| CN109624740A (en) * | 2019-01-21 | 2019-04-16 | 洪天林 | A kind of smart city Green Travel Liftable type electric charging station |
| CN210627353U (en) * | 2019-12-23 | 2020-05-26 | 威海新北洋数码科技有限公司 | Automatic vending machine |
-
2021
- 2021-03-30 CN CN202110338123.6A patent/CN113067532B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882803A (en) * | 2010-06-11 | 2010-11-10 | 李小平 | Balanced management system of series battery pack on basis of capacitance and management method thereof |
| CN101895135A (en) * | 2010-06-11 | 2010-11-24 | 李小平 | Balanced management system for series connected battery pack based on auxiliary battery and management method thereof |
| CN102244405A (en) * | 2011-07-12 | 2011-11-16 | 苏州盖娅智能科技有限公司 | Control method of solar charging of accumulator battery |
| CN103715728A (en) * | 2012-10-06 | 2014-04-09 | 李雄业 | Equalization circuit and device for series-connected battery pack |
| CN103178620A (en) * | 2013-02-19 | 2013-06-26 | 辽宁凯信新能源技术有限公司 | Mobile photovoltaic power generation and off-peak electricity energy storage control system for lithium batteries |
| CN206865212U (en) * | 2017-04-13 | 2018-01-09 | 深圳市华宝新能源股份有限公司 | A kind of safe energy storing and electricity generating rack of family solar energy |
| CN112134305A (en) * | 2020-09-28 | 2020-12-25 | 电管家集团有限公司 | Photovoltaic energy storage all-in-one machine based on lithium iron phosphate battery and application thereof |
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