CN114142744A - Solar photovoltaic inverter for high-rise building - Google Patents
Solar photovoltaic inverter for high-rise building Download PDFInfo
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- CN114142744A CN114142744A CN202111373179.1A CN202111373179A CN114142744A CN 114142744 A CN114142744 A CN 114142744A CN 202111373179 A CN202111373179 A CN 202111373179A CN 114142744 A CN114142744 A CN 114142744A
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- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000000712 assembly Effects 0.000 claims description 19
- 238000000429 assembly Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 5
- 238000009529 body temperature measurement Methods 0.000 claims 3
- 238000007647 flexography Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 14
- 239000000463 material Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 6
- 238000010248 power generation Methods 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
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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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/32—Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention belongs to the field of inverters, in particular to a solar photovoltaic inverter for high-rise buildings, which comprises a case, the inside of the case is provided with a group string type inverter main body and a plurality of components, the components are connected with the group string type inverter main body in series, the components are provided with a switch mechanism, the outer side of the case is provided with a temperature measuring box, the inside of the temperature measuring box is provided with a bimetallic strip, the bimetallic strip is movably connected with the switch mechanism through a transmission mechanism, after the bimetallic strip is influenced and deformed by low temperature, the slide plate and the plug board are driven to move, the plug board pulls the rotating plate to rotate through the flexible plate, the circuit of part of the components is disconnected after the rotating plate rotates, and the lower the outside temperature is, the larger the bimetallic strip deformation is, the longer the moving distance of the sliding plate and the inserting plate is, the larger the rotating amplitude of the rotating plate is driven to be, and the function of automatically adjusting the number of the components connected in series in the circuit along with the change of the outside temperature is realized.
Description
Technical Field
The invention belongs to the field of inverters, and particularly relates to a solar photovoltaic inverter for a high-rise building.
Background
The solar photovoltaic power generation system comprises a solar battery, a storage battery, a charge-discharge controller, a solar photovoltaic inverter, a combiner box and other equipment, wherein the solar battery generates direct current under sunlight, and the direct current is stored in the storage battery.
A chinese patent with publication number CN111969863B discloses a solar power generation photovoltaic inverter, which comprises an inverter main body, a bearing structure for loading protection of the inverter main body, a heat dissipation protection structure for assisting heat dissipation of the loaded inverter main body, and a wall hanging structure, wherein the bearing structure is arranged to facilitate movement and shock absorption, thereby avoiding damage of internal electric devices; the fan, the patch cord and the socket are protected by the heat dissipation protection structure, so that rainwater is prevented from entering the patch cord; can make the bearing box through the wall built-up structure after loading the dc-to-ac converter main part, be convenient for install on the wall body, easy to assemble and dismantlement.
The solar power generation photovoltaic inverter has some problems, a household photovoltaic power generation system can be installed on a wall body in many high-rise buildings such as high-rise residential buildings and office buildings nowadays, in order to guarantee normal power supply of high-rise life and work, a plurality of components are connected in series on a group string type photovoltaic inverter in the photovoltaic power generation system to obtain higher voltage, for example, the input voltage range of a single-phase group string type inverter is 500 volts plus materials, the input voltage range of a three-phase group string type inverter is 800 volts plus materials minus materials, and in the installation modes, the number of the components connected in series with the group string type photovoltaic inverter is large; due to the temperature characteristic of the photovoltaic inverter assembly, the lower the temperature is, the higher the voltage is, the influence of day and night temperature change, seasonal change and geographical position is caused, the temperature difference outside high-rise buildings in some areas is large, the voltage exceeds the upper voltage limit of the photovoltaic inverter possibly, the inverter is alarmed and stopped, and the normal use of a photovoltaic system is influenced.
Therefore, the invention provides a solar photovoltaic inverter for a high-rise building.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the solar photovoltaic inverter for the high-rise building comprises a case, wherein a group string type inverter main body and a plurality of components are arranged inside the case, the components are connected with the group string type inverter main body in series, a switch mechanism is arranged on each component, a temperature measuring box is arranged on the outer side of the case, a bimetallic strip is arranged inside the temperature measuring box, and the bimetallic strip is movably connected with the switch mechanism through a transmission mechanism. When the photovoltaic inverter works, the temperature of the working environment of the photovoltaic inverter is detected through the bimetallic strip, and the bimetallic strip is made of a material which automatically deforms along with the temperature change and can automatically reset; in an initial state, all the components are connected in series in a circuit of the group string type inverter main body, and the components are communicated with the circuit through a switch mechanism; when the temperature is too low, the bimetallic strip deforms, the transmission mechanism drives the switching mechanisms on the partial assemblies to operate, so that the switches of the assemblies are disconnected, the partial assemblies are automatically disconnected after the temperature is too low, the number of the assemblies connected in series in the circuit is reduced, and the condition that the voltage of the photovoltaic inverter exceeds the upper limit and the inverter stops when the temperature is too low is improved.
Preferably, the switch mechanism comprises a first connector and a second connector, the first connector and the second connector are respectively installed on two sides of the assembly, a switch key is rotatably installed on the second connector, and a circuit is communicated between every two adjacent assemblies through the first connector, the switch key and the second connector. When the connector works, the first connector and the second connector are respectively two connectors of component circuit connection, the on-off key is always contacted with the second connector, the on-off key on one component is contacted with the first connector on the other component, and the other components are connected in the same way, so that all the components are connected in series through the first connector, the on-off key and the second connector; when one of the components is to be disconnected, the on-off key is driven to rotate through the transmission mechanism, so that the on-off key and the connector on the component are staggered, the component can be disconnected, and the number of the components connected in series in the circuit is reduced.
Preferably, the components are arranged in a ring shape, the outer side of the components inside the case is fixedly provided with a lead, the lead is arc-shaped, one end of the lead is connected with the group string type inverter main body, the other end of the lead is vacant, the inner wall of the lead is provided with a plurality of connectors III, the connectors III are matched with the on-off key, and the connectors III are disconnected with the on-off key. When the circuit breaker works, the occupied space of the components can be reduced by arranging the components in an annular arrangement mode, and when one of the components is disconnected from the circuit by rotating the switch key, the deflected switch key is in three-contact with the corresponding connector, so that the disconnected part of the circuit after the components are disconnected is reconnected through the conducting wire, and the problem that the whole circuit is also disconnected after the components are disconnected from the circuit is solved.
Preferably, the on-off switch comprises a straight section and an arc-shaped section, an arc-shaped contact groove corresponding to the arc-shaped section is formed in the joint II, and elastic clamping plates corresponding to the straight section are arranged on the joint I and the joint III. During operation, when the on & off switch was rotatory, the arc section contacted with the arc contact groove all the time for the on & off switch all the time with connect two circuit intercommunications, the elasticity cardboard can adopt materials such as plastics that have elastic deformation and reset function, through setting up the elasticity cardboard with the firm card of on & off switch on first or connect three, strengthened the cooperation fastness of on & off switch and contact one or connect three after the contact.
Preferably, the transmission mechanism comprises a guide seat fixedly installed inside the case, the transmission mechanism is located on the outer side of the wire, a movable plate is installed at the top end of the guide seat in a sliding mode, a return spring is installed on the movable plate, a guide block corresponding to the movable plate is arranged at the top end of the guide seat, and a clamping seat corresponding to the on-off key is installed on the movable plate. During operation, the movable plate is pulled, the movable plate drives the on-off key to rotate through the clamping seat, the on-off key is disconnected with a connector on the corresponding component, the function of disconnecting the component from a circuit is achieved, and the number of the disconnected components can be adjusted by adjusting the number of the pulled movable plates, so that different working environments can be adapted.
Preferably, the inside of guide holder rotates and installs the commentaries on classics board, and the top fixed mounting of commentaries on classics board has a plurality of ramp plates, and ramp plate is the arc form, and ramp plate's length reduces in proper order, and the interval between ramp plate and the fly leaf increases in proper order, and the recess that corresponds with ramp plate is seted up to the bottom of fly leaf. The during operation rotates the commentaries on classics board, changes the board rotatory back, drives the fly leaf through ramp plate and recess and removes, and the fly leaf drives the on & off switch after removing and rotates, disconnects the subassembly, because the interval of ramp plate and fly leaf increases in proper order, consequently, along with the continuation rotation of changeing the board, has more ramp plate and fly leaf contact and pulling fly leaf, through the rotation range of adjustment commentaries on classics board, can the adjusting circuit in, the quantity of the subassembly of disconnection, convenient operation.
Preferably, install the slide on the bimetallic strip, the inside activity of slide is pegged graft there is the picture peg, and the spring part that resets is installed on the picture peg and is located the internally mounted of slide, and the picture peg is connected through the flexbile plate with changeing between the board. When the flexible board works, the flexible board can adopt a structure that a plurality of rolling balls are movably connected, and can also adopt a chain belt type mounting structure, and the flexible board can be mounted to realize the linkage of the inserting board and the rotating board; after the bimetallic strip is influenced by low temperature and deformed, the sliding plate and the inserting plate are driven to move, the inserting plate pulls the rotating plate to rotate through the flexible plate, after the rotating plate rotates, a part of circuits of the components are disconnected, the lower the external temperature is, the larger the deformation of the bimetallic strip is, the longer the moving distance between the sliding plate and the inserting plate is, the larger the rotating amplitude of the rotating plate is driven to be, and the function of automatically adjusting the quantity of the components connected in series in the circuit along with the change of the external temperature is realized.
The invention has the following beneficial effects:
1. according to the solar photovoltaic inverter for the high-rise building, the bimetallic strip drives the sliding plate and the inserting plate to move after being deformed under the influence of low temperature, the inserting plate pulls the rotating plate to rotate through the flexible plate, the rotating plate rotates to disconnect circuits of partial components, the lower the external temperature is, the larger the deformation of the bimetallic strip is, the longer the moving distance between the sliding plate and the inserting plate is, the larger the rotating amplitude of the rotating plate is driven to be, and the function of automatically adjusting the number of the components connected in series in a circuit along with the change of the external temperature is realized.
2. According to the solar photovoltaic inverter for the high-rise building, when the external temperature is reduced too fast, the moving speed of the sliding plate is correspondingly increased, the rotating wheel rotates too fast, the swing amplitude of the top plate is increased, the inserting plate is extruded to move, the inserting plate drives the rotating plate to rotate in advance, the assembly is disconnected in advance, the situation that when the temperature is reduced too fast, deformation of the bimetallic strip possibly lags, the assembly cannot be disconnected in time, alarm shutdown occurs, and the solar photovoltaic inverter for the high-rise building is safer and more reliable to use.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a top cross-sectional view of the assembly attachment structure of the present invention;
FIG. 3 is a perspective view of the guide and rotation plate of the present invention;
FIG. 4 is an enlarged view of a portion A of FIG. 2 in accordance with the present invention;
FIG. 5 is an enlarged view of portion B of FIG. 2 in accordance with the present invention;
FIG. 6 is a perspective view of the movable plate and the switch key of the present invention;
FIG. 7 is a perspective view of the board and board arrangement of the present invention;
in the figure: 1. a chassis; 2. a string inverter main body; 3. an assembly; 4. a temperature measuring box; 5. a bimetal; 6. a first connector; 7. a second joint; 8. an on-off key; 9. a wire; 10. a third joint; 11. an elastic clamping plate; 12. a guide seat; 13. a movable plate; 14. a guide block; 15. a card holder; 16. rotating the plate; 17. a ramp plate; 18. a slide plate; 19. inserting plates; 20. a flexible board; 21. a rotating wheel; 22. a top plate; 23. a driven lever; 24. a deflector rod.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example one
As shown in fig. 1 to 2, the solar photovoltaic inverter for high-rise buildings according to the embodiment of the invention includes a case 1, a string-type inverter main body 2 and a plurality of components 3 are installed inside the case 1, the components 3 are connected in series with the string-type inverter main body 2, a switch mechanism is arranged on the components 3, a temperature measuring box 4 is installed outside the case 1, a bimetallic strip 5 is installed inside the temperature measuring box 4, and the bimetallic strip 5 is movably connected with the switch mechanism through a transmission mechanism. When the photovoltaic inverter works, the temperature of the working environment of the photovoltaic inverter is detected through the bimetallic strip 5, and the bimetallic strip 5 is made of a material which automatically deforms along with the temperature change and can automatically reset; in an initial state, all the assemblies 3 are connected in series in the circuit of the group-string inverter main body 2, and the assemblies 3 are communicated with the circuit through a switch mechanism; when the temperature is too low, the bimetallic strip 5 deforms, and the transmission mechanism drives the switching mechanisms on the partial assemblies 3 to operate, so that the switches of the assemblies 3 are switched off, the partial assemblies 3 are automatically switched off after the temperature is too low, the number of the assemblies 3 connected in series in the circuit is reduced, and the condition that when the temperature is too low, the voltage of the photovoltaic inverter exceeds the upper limit to cause the inverter to stop is improved.
As shown in fig. 2 to 6, the switch mechanism includes a first connector 6 and a second connector 7, the first connector 6 and the second connector 7 are respectively installed on two sides of the module 3, a switch key 8 is rotatably installed on the second connector 7, and two adjacent modules 3 are communicated with each other through the first connector 6, the switch key 8 and the second connector 7. When the device works, the first connector 6 and the second connector 7 are two connectors for circuit connection of the components 3 respectively, the on-off key 8 is always in contact with the second connector 7, the on-off key 8 on one component 3 is in contact with the first connector 6 on the other component 3, and the other components 3 are connected in the same way, so that all the components 3 are connected in series through the first connector 6, the on-off key 8 and the second connector 7; when one of the components 3 is to be disconnected, the switch key 8 is driven to rotate through the transmission mechanism, so that the switch key 8 is staggered with the first connector 6 on the component 3, and the functions of disconnecting the component 3 and reducing the number of the components 3 connected in series in a circuit can be realized.
As shown in fig. 2 to 4, the components 3 are arranged in a ring shape, a lead 9 is fixedly installed inside the chassis 1 and outside the components 3, the lead 9 is arc-shaped, one end of the lead 9 is connected with the group string inverter main body 2, the other end of the lead 9 is vacant, a plurality of connectors three 10 are arranged on the inner wall of the lead 9, the connectors three 10 are matched with the on-off switch 8, and the connectors three 10 are disconnected from the on-off switch 8. When the circuit breaker works, the assembly 3 is arranged in a ring shape, the occupied space of the assembly 3 can be reduced, when the switch key 8 is rotated, and one assembly 3 is disconnected from the circuit, the deflected switch key 8 is contacted with the corresponding connector III 10, so that the circuit disconnection part after the assembly 3 is disconnected is reconnected through the lead 9, and the problem that the whole circuit is disconnected after the assembly 3 is disconnected from the circuit is solved.
Taking fig. 2 as an example, the modules 3 labeled M1, M2 … … M17 and M18 are connected in series, and finally M18 is directly connected to the string inverter body 2; when the number of the modules 3 connected in series needs to be reduced, the module 3 with the reference number M18 is disconnected, the switch key 8 on the module 3 with the reference number M17 is staggered with the first connector 6 on the module 3 with the reference number M18, and the switch key 8 is connected with the third connector 10 on the inner wall of the lead 9, so that the module 3 with the reference number M17 is connected with the group string type inverter main body 2 through the lead 9, and the circuit is always connected.
As shown in fig. 4, the switch key 8 includes a straight section and an arc section, the second joint 7 is provided with an arc contact groove corresponding to the arc section, and the first joint 6 and the third joint 10 are both provided with an elastic clamping plate 11 corresponding to the straight section. During operation, when on & off switch 8 was rotatory, the arc section contacted with the arc contact groove all the time for on & off switch 8 all the time with connect two 7 circuits intercommunication, material such as plastics that elastic clamping plate 11 can adopt to have elastic deformation and reset function, through setting up elastic clamping plate 11 with the firm card of on & off switch 8 on first 6 of contact or connect three 10, strengthened on & off switch 8 and connect one 6 or connect three 10 cooperation firmness after the contact.
As shown in fig. 2 to 6, the transmission mechanism includes a guide seat 12 fixedly installed inside the chassis 1, the transmission mechanism is located outside the wires 9, a movable plate 13 is slidably installed at a top end of the guide seat 12, a return spring is installed on the movable plate 13, a guide block 14 corresponding to the movable plate 13 is installed at a top end of the guide seat 12, and a clamping seat 15 corresponding to the on-off key 8 is installed on the movable plate 13. During operation, the movable plate 13 is pulled, the movable plate 13 drives the switch key 8 to rotate through the clamping seat 15, so that the switch key 8 is disconnected from the first connector 6 on the corresponding component 3, the component 3 is disconnected from a circuit, and the number of the disconnected components 3 can be adjusted by adjusting the number of the pulled movable plates 13, so as to adapt to different working environments.
As shown in fig. 2 to 6, a rotating plate 16 is rotatably installed inside the guide seat 12, a plurality of slope plates 17 are fixedly installed at the top of the rotating plate 16, the slope plates 17 are arc-shaped, the lengths of the slope plates 17 are sequentially reduced, the distances between the slope plates 17 and the movable plate 13 are sequentially increased, and a groove corresponding to the slope plates 17 is formed at the bottom of the movable plate 13. During operation, the rotating plate 16 is rotated, the movable plate 13 is driven to move through the slope plate 17 and the groove after the rotating plate 16 rotates, the movable plate 13 drives the on-off key 8 to rotate after moving, the component 3 is disconnected, and because the distances between the slope plate 17 and the movable plate 13 are sequentially increased, more slope plates 17 can be in contact with the movable plate 13 and pull the movable plate 13 along with the continuous rotation of the rotating plate 16, the number of the disconnected components 3 in the circuit can be adjusted by adjusting the rotation amplitude of the rotating plate 16, and the operation is convenient.
As shown in fig. 2 and 5, a sliding plate 18 is mounted on the bimetal 5, an insertion plate 19 is movably inserted into the sliding plate 18, a return spring member is mounted on the insertion plate 19 and located inside the sliding plate 18, and the insertion plate 19 is connected with the rotating plate 16 through a flexible plate 20. When the device works, the flexible plate 20 can adopt a structure of movably connecting a plurality of rolling balls, and can also adopt a chain belt type mounting structure, and the flexible plate 20 can be mounted to realize the linkage of the plug board 19 and the rotating board 16; after the bimetallic strip 5 deforms under the influence of low temperature, the sliding plate 18 and the inserting plate 19 are driven to move, the inserting plate 19 pulls the rotating plate 16 to rotate through the flexible plate 20, after the rotating plate 16 rotates, a part of circuits of the components 3 are disconnected, the lower the external temperature is, the larger the bimetallic strip 5 deforms, the longer the moving distance between the sliding plate 18 and the inserting plate 19 is, the larger the amplitude of rotation of the rotating plate 16 is driven to be, and the function of automatically adjusting the number of the components 3 connected in series in the circuit along with the change of the external temperature is realized.
Example two
As shown in fig. 5 and 7, a first comparative example, in which another embodiment of the present invention is: the top of slide 18 rotates and installs runner 21, and fixed mounting has the roof 22 that corresponds with picture peg 19 on the runner 21, installs the extension spring that resets on the roof 22, and the internally mounted of guide holder 12 has the actuating mechanism who corresponds with runner 21. During operation, after the sliding plate 18 moves, the rotating wheel 21 and the top plate 22 are driven to rotate through the driving mechanism, and the top plate 22 rotates under the action of the reset tension spring, so that the top plate 22 swings in a reciprocating manner; under normal conditions, the reciprocating swing amplitude of the top plate 22 is small and cannot be contacted with the inserting plate 19; when the outside temperature is reduced too fast, the moving speed of the sliding plate 18 is correspondingly increased, the rotating wheel 21 rotates too fast, the swing amplitude of the top plate 22 is increased, the top plate is in contact with the inserting plate 19 and extrudes the inserting plate 19 to move, and under the normal condition, the sliding plate 18 is driven to rotate to disconnect the component 3 after moving to a certain distance; under the condition of cooling too fast, when slide 18 has not moved foretell certain distance yet, roof 22 extrusion picture peg 19 removed for picture peg 19 drives in advance that commentaries on classics board 16 is rotatory, in advance with subassembly 3 disconnection, possess under the rapid cooling environment, break off subassembly 3 in advance and carry out the function protected, when having improved the cooling too fast, the deformation of bimetallic strip 5 probably has the hysteresis, lead to in time not breaking off subassembly 3, the condition of warning shut down appears, use safe and reliable more.
As shown in fig. 5 and 7, the height of the insert plate 19 is greater than that of the slide plate 18. The height of the insert plate 19 matches the height of the top plate 22, and the top plate 22 can be contacted with the insert plate 19 after the rotating wheel 21 rotates rapidly.
As shown in fig. 5 and 7, the driving mechanism includes shift levers 24 arranged at equal intervals, a straight-edge guide section corresponding to the sliding plate 18 is arranged on the guide holder 12, driven levers 23 are uniformly distributed on the annular side wall of the rotating wheel 21, the shift levers 24 are arranged on the inner wall of the straight-edge guide section, and the shift levers 24 are matched with the driven levers 23. During operation, the in-process that slide 18 removed, driven lever 23 and driving lever 24 contact back drive runner 21 rotatory, driven lever 23 and driving lever 24 stagger the back, runner 21 revolves under the pulling of extension spring that resets and resets, therefore, runner 21 and roof 22 do the deflection of small amplitude, after slide 18 translation rate became fast, driven lever 23 and driving lever 24 contact gap shorten, runner 21 does not come to the gyration in time, just continue to deflect under driven lever 23 and driving lever 24's effect, the rotation range grow of runner 21 and roof 22, the condition along with ambient temperature change and rate of change has been realized, the function of automatic adjustment subassembly 3 disconnection operation, adaptability is wider, need not additionally to set up electric power detection and electric drive mechanism, moreover, the steam generator is simple in structure, and low cost, and convenient to use.
The working principle is as follows:
the temperature of the working environment of the photovoltaic inverter is detected through the bimetallic strip 5, and the bimetallic strip 5 is made of a material which automatically deforms along with the temperature change and can automatically reset; in an initial state, all the assemblies 3 are connected in series in the circuit of the group-string inverter main body 2, and the assemblies 3 are communicated with the circuit through a switch mechanism; when the temperature is too low, the bimetallic strip 5 deforms, and the transmission mechanism drives the switching mechanisms on the partial assemblies 3 to operate, so that the switches of the assemblies 3 are switched off, the partial assemblies 3 are automatically switched off after the temperature is too low, the number of the assemblies 3 connected in series in the circuit is reduced, and the condition that when the temperature is too low, the voltage of the photovoltaic inverter exceeds the upper limit to cause the inverter to stop is improved.
The first connector 6 and the second connector 7 are two connectors for circuit connection of the components 3 respectively, the switch 8 is always in contact with the second connector 7, the switch 8 on one component 3 is in contact with the first connector 6 on the other component 3, and the other components 3 are connected in the same way, so that all the components 3 are connected in series through the first connector 6, the switch 8 and the second connector 7; when one of the components 3 is to be disconnected, the switch key 8 is driven to rotate through the transmission mechanism, so that the switch key 8 is staggered with the first connector 6 on the component 3, and the functions of disconnecting the component 3 and reducing the number of the components 3 connected in series in a circuit can be realized.
Through setting up subassembly 3 circular arrangement, reducible subassembly 3's occupation space when rotatory on-off switch 8 for when one of them subassembly 3 breaks off from the circuit, the on-off switch 8 after the deflection contacts with three 10 of corresponding joint, and like this, the circuit disconnection portion after breaking subassembly 3 through wire 9 reconnects, has improved subassembly 3 and has broken off from the circuit, leads to the problem that whole circuit also breaks off.
Taking fig. 2 as an example, the modules 3 labeled M1, M2 … … M17 and M18 are connected in series, and finally M18 is directly connected to the string inverter body 2; when the number of the modules 3 connected in series needs to be reduced, the module 3 with the reference number M18 is disconnected, the switch key 8 on the module 3 with the reference number M17 is staggered with the first connector 6 on the module 3 with the reference number M18, and the switch key 8 is connected with the third connector 10 on the inner wall of the lead 9, so that the module 3 with the reference number M17 is connected with the group string type inverter main body 2 through the lead 9, and the circuit is always connected.
When the on & off switch 8 was rotatory, the arc section contacted with the arc contact groove all the time for on & off switch 8 all the time with connect two 7 circuits intercommunication, materials such as plastics that elastic clamping plate 11 can adopt to have elastic deformation and reset function, through setting up elastic clamping plate 11 with the firm card of on & off switch 8 on first 6 of contact or connect three 10, strengthened on & off switch 8 and connect one 6 or connect three 10 cooperation firmness after the contact.
The movable plate 13 is pulled, the movable plate 13 drives the switch key 8 to rotate through the clamping seat 15, so that the switch key 8 is disconnected with the first connector 6 on the corresponding component 3, the function of disconnecting the component 3 from a circuit is realized, and the number of the disconnected components 3 can be adjusted by adjusting the number of the pulled movable plates 13, so as to adapt to different working environments.
The rotating plate 16 is rotated, after the rotating plate 16 rotates, the movable plate 13 is driven to move through the slope plate 17 and the groove, the movable plate 13 drives the on-off key 8 to rotate after moving, the component 3 is disconnected, and as the distances between the slope plate 17 and the movable plate 13 are sequentially increased, more slope plates 17 can be in contact with the movable plate 13 and pull the movable plate 13 along with the continuous rotation of the rotating plate 16, the number of the disconnected components 3 in the circuit can be adjusted by adjusting the rotation amplitude of the rotating plate 16, and the operation is convenient.
The flexible board 20 can adopt a structure that a plurality of rolling balls are movably connected, and can also adopt a chain belt type mounting structure, and the flexible board 20 can be mounted to realize the linkage of the plug board 19 and the rotating board 16; after the bimetallic strip 5 deforms under the influence of low temperature, the sliding plate 18 and the inserting plate 19 are driven to move, the inserting plate 19 pulls the rotating plate 16 to rotate through the flexible plate 20, after the rotating plate 16 rotates, a part of circuits of the components 3 are disconnected, the lower the external temperature is, the larger the bimetallic strip 5 deforms, the longer the moving distance between the sliding plate 18 and the inserting plate 19 is, the larger the amplitude of rotation of the rotating plate 16 is driven to be, and the function of automatically adjusting the number of the components 3 connected in series in the circuit along with the change of the external temperature is realized.
After the sliding plate 18 moves, the rotating wheel 21 and the top plate 22 are driven to rotate through the driving mechanism, and the top plate 22 rotates under the action of the reset tension spring, so that the top plate 22 swings in a reciprocating manner; under normal conditions, the reciprocating swing amplitude of the top plate 22 is small and cannot be contacted with the inserting plate 19; when the outside temperature is reduced too fast, the moving speed of the sliding plate 18 is correspondingly increased, the rotating wheel 21 rotates too fast, the swing amplitude of the top plate 22 is increased, the top plate is in contact with the inserting plate 19 and extrudes the inserting plate 19 to move, and under the normal condition, the sliding plate 18 is driven to rotate to disconnect the component 3 after moving to a certain distance; under the condition of cooling too fast, when slide 18 has not moved foretell certain distance yet, roof 22 extrusion picture peg 19 removed for picture peg 19 drives in advance that commentaries on classics board 16 is rotatory, in advance with subassembly 3 disconnection, possess under the rapid cooling environment, break off subassembly 3 in advance and carry out the function protected, when having improved the cooling too fast, the deformation of bimetallic strip 5 probably has the hysteresis, lead to in time not breaking off subassembly 3, the condition of warning shut down appears, use safe and reliable more.
The height of the insert plate 19 matches the height of the top plate 22, and the top plate 22 can be contacted with the insert plate 19 after the rotating wheel 21 rotates rapidly.
In the process that slide 18 removed, driven lever 23 and driving lever 24 contact back drive runner 21 rotatory, driven lever 23 and driving lever 24 stagger the back, runner 21 is the gyration of the pulling of extension spring that resets and is reset, therefore, runner 21 and roof 22 do the deflection of small amplitude, after slide 18 translation rate becomes fast, driven lever 23 and driving lever 24 contact gap shorten, runner 21 is too late to be gyrated, just continue to deflect under driven lever 23 and driving lever 24's effect, the rotation range grow of runner 21 and roof 22, the condition along with ambient temperature change and rate of change has been realized, the function of automatic adjustment subassembly 3 disconnection operation, adaptability is wider, need not additionally to set up electric power detection and electric drive mechanism, moreover, the steam generator is simple in structure, and low cost, and convenient to use.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A solar photovoltaic inverter for high-rise buildings is characterized in that: the temperature measurement device comprises a case (1), wherein a group string type inverter main body (2) and a plurality of components (3) are arranged inside the case (1), the components (3) are connected with the group string type inverter main body (2) in series, a switch mechanism is arranged on the components (3), a temperature measurement box (4) is arranged outside the case (1), a bimetallic strip (5) is arranged inside the temperature measurement box (4), and the bimetallic strip (5) is movably connected with the switch mechanism through a transmission mechanism.
2. The solar photovoltaic inverter for the high-rise building according to claim 1, wherein: the switch mechanism comprises a first connector (6) and a second connector (7), the first connector (6) and the second connector (7) are respectively installed on two sides of the assemblies (3), a switch key (8) is installed on the second connector (7) in a rotating mode, and two adjacent assemblies (3) are communicated with each other through the first connector (6), the switch key (8) and the second connector (7).
3. The solar photovoltaic inverter for the high-rise building according to claim 2, wherein: the assembly (3) is arranged in a ring shape, a wire (9) is fixedly mounted on the outer side of the assembly (3) and inside the case (1), the wire (9) is arc-shaped, one end of the wire (9) is connected with the group string type inverter main body (2), the other end of the wire (9) is vacant, a plurality of connectors three (10) are arranged on the inner wall of the wire (9), the connectors three (10) are matched with the on-off switch (8), and the connectors three (10) are disconnected with the on-off switch (8).
4. The solar photovoltaic inverter for the high-rise building according to claim 3, wherein: the switch key (8) comprises a straight edge section and an arc-shaped section, an arc-shaped contact groove corresponding to the arc-shaped section is formed in the joint II (7), and elastic clamping plates (11) corresponding to the straight edge section are arranged on the joint I (6) and the joint III (10).
5. The solar photovoltaic inverter for the high-rise building according to claim 3, wherein: the transmission mechanism comprises a guide seat (12) fixedly installed inside the case (1), the transmission mechanism is located on the outer side of the lead (9), a movable plate (13) is installed on the top end of the guide seat (12) in a sliding mode, a reset spring is installed on the movable plate (13), a guide block (14) corresponding to the movable plate (13) is arranged on the top end of the guide seat (12), and a clamping seat (15) corresponding to the on-off key (8) is installed on the movable plate (13).
6. The solar photovoltaic inverter for the high-rise building according to claim 5, wherein: the inner rotating of the guide seat (12) is provided with a rotating plate (16), the top of the rotating plate (16) is fixedly provided with a plurality of slope plates (17), the slope plates (17) are arc-shaped, the lengths of the slope plates (17) are sequentially reduced, the distance between each slope plate (17) and the corresponding movable plate (13) is sequentially increased, and the bottom of each movable plate (13) is provided with a groove corresponding to each slope plate (17).
7. The solar photovoltaic inverter for the high-rise building according to claim 6, wherein: install slide (18) on bimetallic strip (5), the inside activity grafting of slide (18) has picture peg (19), and the internally mounted that just is located slide (18) on picture peg (19) has the spring part that resets, is connected through flexography (20) between picture peg (19) and commentaries on classics board (16).
8. The solar photovoltaic inverter for the high-rise building according to claim 7, wherein: the top of slide (18) is rotated and is installed runner (21), and fixed mounting has roof (22) that correspond with picture peg (19) on runner (21), installs the extension spring that resets on roof (22), and the internally mounted of guide holder (12) has the actuating mechanism who corresponds with runner (21).
9. The solar photovoltaic inverter for the high-rise building according to claim 7, wherein: the height of the insert plate (19) is greater than that of the sliding plate (18).
10. The solar photovoltaic inverter for the high-rise building according to claim 8, wherein: the driving mechanism comprises shifting rods (24) which are arranged at equal intervals, a straight-edge guide section corresponding to the sliding plate (18) is arranged on the guide seat (12), driven rods (23) which are uniformly distributed are arranged on the side wall of the ring of the rotating wheel (21), the shifting rods (24) are arranged on the inner wall of the straight-edge guide section, and the shifting rods (24) are matched with the driven rods (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111373179.1A CN114142744A (en) | 2021-11-19 | 2021-11-19 | Solar photovoltaic inverter for high-rise building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111373179.1A CN114142744A (en) | 2021-11-19 | 2021-11-19 | Solar photovoltaic inverter for high-rise building |
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| Publication Number | Publication Date |
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| CN114142744A true CN114142744A (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111373179.1A Withdrawn CN114142744A (en) | 2021-11-19 | 2021-11-19 | Solar photovoltaic inverter for high-rise building |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117366697A (en) * | 2023-11-29 | 2024-01-09 | 中规院城市更新(山东)有限公司 | Outdoor air conditioner shielding cover capable of generating electricity automatically |
-
2021
- 2021-11-19 CN CN202111373179.1A patent/CN114142744A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117366697A (en) * | 2023-11-29 | 2024-01-09 | 中规院城市更新(山东)有限公司 | Outdoor air conditioner shielding cover capable of generating electricity automatically |
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Application publication date: 20220304 |