WO2023155771A1 - 逆变器及光伏系统 - Google Patents

逆变器及光伏系统 Download PDF

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Publication number
WO2023155771A1
WO2023155771A1 PCT/CN2023/075867 CN2023075867W WO2023155771A1 WO 2023155771 A1 WO2023155771 A1 WO 2023155771A1 CN 2023075867 W CN2023075867 W CN 2023075867W WO 2023155771 A1 WO2023155771 A1 WO 2023155771A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
connecting piece
conductive core
inverter
connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/075867
Other languages
English (en)
French (fr)
Inventor
陈超
马征
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Digital Power Technologies Co Ltd
Original Assignee
Huawei Digital Power Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=83728879&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2023155771(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Huawei Digital Power Technologies Co Ltd filed Critical Huawei Digital Power Technologies Co Ltd
Priority to EP23755773.1A priority Critical patent/EP4465452A4/en
Priority to JP2024547869A priority patent/JP2025505278A/ja
Publication of WO2023155771A1 publication Critical patent/WO2023155771A1/zh
Priority to US18/802,420 priority patent/US20240405692A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters
    • H05K7/14329—Housings specially adapted for power drive units or power converters specially adapted for the configuration of power bus bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • H01R12/7011—Locking or fixing a connector to a PCB
    • H01R12/7047—Locking or fixing a connector to a PCB with a fastener through a screw hole in the coupling device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • 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
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • 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
    • 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
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/325—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/57—Fixed connections for rigid printed circuits or like structures characterised by the terminals surface mounting terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/75—Coupling devices for rigid printing circuits or like structures connecting to cables except for flat or ribbon cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10356—Cables
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10409—Screws
    • 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

Definitions

  • the present application relates to the field of photovoltaic technology, in particular to an inverter and a photovoltaic system.
  • the electric energy of the photovoltaic module needs to be transmitted to the inverter to realize the inversion of the current, so that the electric energy can enter the end user or be incorporated into the grid.
  • a male connector can be installed on the photovoltaic module end, and a female connector can be installed on the inverter end. After the male connector and the female connector are docked, the electrical connection between the photovoltaic module and the inverter can be realized.
  • the conductive core of the connector is electrically connected to the circuit board inside the inverter through a cable. Since the electrical connection between the cable, the conductive core and the circuit board must be realized, the installation The steps are relatively complicated, and connection reliability problems are prone to occur.
  • the end of the conductive core is provided with plug-in terminals, and the plug-in terminals are inserted into the circuit board to realize electrical connection. No cables are needed, but the plug-in terminals are inserted into the circuit board.
  • the connection stability is poor, and an additional connection mechanism is required to connect the conductive core and the circuit board, and the structure is complicated.
  • the present application provides an inverter that does not need cables and can improve the stability of the connection between the connector and the circuit board.
  • an embodiment of the present application provides an inverter, the inverter includes a casing and a first connector, the inside of the casing has a circuit board, and the circuit board is provided with an inverter circuit;
  • the The first connector includes a first shell and a first conductive core, the first shell is fixed on the shell, the first conductive core is located in the first shell and extends into the inside of the shell, so
  • the first conductive core includes a first connecting piece located inside the housing, the first connecting piece is a flat structure, the first connecting piece is fixed on the circuit board and electrically connected to the inverter circuit, The end of the first conductive core away from the first connecting piece is used to connect to the photovoltaic module, and the first conductive core is used to transmit the direct current generated by the photovoltaic module to the inverter through the first connecting piece.
  • a circuit, the inverter circuit converts the direct current into alternating current, and the flat structure is used to improve connection stability and transmission current stability when the first connecting piece is fixed to the circuit board
  • the first housing in the first connector is used to protect the first conductive core, and to fix the first conductive core on the shell, and all the first connectors in the first connector
  • the first conductive core is used to transmit electricity, and transmit the direct current in the photovoltaic module to the inverter circuit in the circuit board, so as to realize the conversion of direct current into alternating current.
  • the first conductive core is straight, and the part of the first conductive core away from the first connecting piece is hollow cylindrical.
  • the first connecting piece has a flat structure, which can increase the contact area between the first connecting piece and the circuit board, facilitate fixing the first connecting piece on the circuit board, and ensure that the first connecting piece Good electrical connection between the connecting sheet and the circuit board improves connection stability and electrical transmission stability.
  • the first connecting piece is welded on the circuit board, and since the first connecting piece has a flat structure, the first connecting piece and the circuit board have a larger welding area, Provides welding stability.
  • the plane where the first connecting piece is located is parallel to the board surface of the circuit board, which improves the stability and reliability of the connection between the first connecting piece and the circuit board.
  • the first connecting sheet and the circuit board are stacked along a first direction, and the first At least part of the projection of a connecting piece on the circuit board along the first direction is located on the circuit board, and the first connecting piece and the circuit board have a partial intersection in the second direction for shortening
  • the distance between the first connecting piece and the circuit board along the second direction is defined, and the first direction is perpendicular to the second direction.
  • the first connection piece is directly connectable to the circuit board in the second direction, without a cable being arranged between the circuit board and the first connection piece in the second direction.
  • the distance between the first connecting piece and the circuit board is shortened, so that the current output from the first connecting piece can be directly input to the circuit board, effectively shortening the current input of the inverter
  • the path length is reduced and the interference of the environment on the current input of the inverter is reduced.
  • the first direction is a thickness direction of the inverter
  • the second direction is a width direction of the inverter
  • the orthographic projection of the first connecting piece on the circuit board may be located outside the circuit board, and the first connecting piece may be connected to the circuit board through a connecting component.
  • the first connecting sheet is formed by stretching one end of the first conductive core, which can save manufacturing cost.
  • the first conductive core is integrally machined or integrally formed by injection molding.
  • the first shell is fixedly connected to the outer shell by means of screws, welding or the like.
  • the first housing extends to the inner side of the housing, and the first housing is fixedly connected to the housing through nuts.
  • the first casing wraps the part of the first conductive core outside the casing, and the first conductive core is fixed to the casing by being fixed to the first casing.
  • the existing MC4 or MC4-like connectors in the market include a detachably connected male connecting part and a female connecting part. One end is connected to the photovoltaic module; or the end of the female connecting part away from the male connecting part is connected to the circuit board, and the end of the male connecting part away from the female connecting part is connected to the photovoltaic module.
  • one end of the conductive core of the existing male connection part or female connection part in the market is stamped, rolled, etc. to make one end of the conductive core flat, so as to manufacture the first connector.
  • MC4 or MC4-like connectors are directly connected to the circuit board through cables. Due to the limited internal space of the inverter, the bending radius of the cables does not meet the standard, and the inside of the inverter The cables are messy, which leads to difficulty in the installation of the inverter, low installation efficiency, and poor connection; when the inverter is connected to multiple MC4 or MC4-like connectors of multiple photovoltaic modules , the inside of the inverter needs more cables to connect the MC4 or imitation MC4 type connector and the circuit board, making the cables inside the inverter more messy and making the installation of the inverter more difficult; Moreover, both ends of the cable need OT terminals to be connected to the circuit board and the MC4 connector respectively, so that the contact resistance and heat generation of the entire circuit are high, and the efficiency of the whole machine is reduced.
  • the first connecting piece in the first connector as a flat structure
  • the first connecting piece can be directly connected to the circuit board.
  • the first connecting piece The connection between the inverter and the circuit board is more convenient, making the installation of the inverter simpler and more efficient; on the other hand, the cable-free connection between the first connector and the circuit board reduces the The contact resistance and heat generation between the first connector and the circuit board improve the working efficiency of the inverter, and at the same time, the first connector and the circuit board can be reduced during processing, transportation and assembly.
  • the impact of poor contact reduces the risk of excessive heating or even fire caused by the long-term connection between the first connector and the circuit board; on the other hand, the distance between the first connecting piece and the circuit board is shortened, saving all
  • the space between the first connecting piece and the circuit board improves the space utilization rate and power density of the inverter, effectively shortens the length of the photovoltaic input path and reduces the interference of the environment on the photovoltaic input.
  • the first connecting piece is provided with an opening
  • the inverter further includes a fixing piece
  • the fixing piece passes through the opening and is fixed to the circuit board, so as to fix the The first connecting piece is fixedly connected with the circuit board.
  • the shape of the opening may be a round hole, an oval hole, a square hole, a U-shaped notch or any other suitable shape.
  • the fixing member may be a screw, a buckle or the like.
  • the shape of the opening is a round hole
  • the fixing member is a set of bolts and nuts
  • the circuit board is provided with an opening through the circuit board, and the bolts pass through the circuit board in turn. The opening, the hole and the nut are used to fix the first connecting piece on the circuit board.
  • the circuit board is provided with connection terminals, and the first connection sheet, the connection terminals and the circuit board are stacked in sequence along a first direction, and the first direction is in line with the
  • the circuit board is vertical
  • the connecting terminal is fixed on the circuit board and electrically connected with the circuit board
  • the connecting terminal is provided with a hole
  • the first connecting piece is provided with an opening
  • the inverter also includes A fixing piece, the fixing piece passes through the opening along the first direction and protrudes into the hole, and fixes the first connecting piece on the connecting terminal.
  • threads are provided in the channel
  • the fixing member is a screw, and the screws cooperate with the threads to make the fixing of the first connecting piece and the connecting terminal more reliable.
  • the circuit board is provided with the socket, the socket is electrically connected to the circuit board, the first connecting piece is inserted into the socket and electrically connected to the socket, and the The first connecting piece is electrically connected with the circuit board.
  • the internal structure of the socket is not limited, as long as the first connecting piece is inserted into the socket, the first connecting piece can be fixed to the socket and electrically connected to the socket.
  • the first conductive core includes a first conductive core body and the first connecting sheet, the first conductive core body passes through the outer side and the inner side of the casing, and the first The connecting piece is located at one end of the first conductive core body, and the extension direction of the first connecting piece is the same as that of the first conductive core body, so as to facilitate the processing of the first conductive core.
  • the first conductive core includes a first conductive core body and the first connecting sheet, the first conductive core body passes through the outer side and the inner side of the casing, and the first The connecting piece is located at one end of the first conductive core body, and the extending direction of the first connecting piece intersects with the extending direction of the first conductive core body, so that the first conductive core can adapt to various installation environments.
  • the first connecting piece is linear, and the angle between the first connecting piece and the first conductive core body is greater than 0° and less than 180°.
  • the first connecting piece is arc-shaped.
  • the first conductive core further includes a first connection section, the first connection section is located between the first conductive core body and the first connection sheet, and the first The extension direction of the connecting section intersects with the extension directions of the first conductive core body and the first connecting piece, so that the first conductive core can adapt to various installation environments.
  • the angle between the first connecting section and the first conductive core body is greater than 0° and less than 180°
  • the angle between the first connecting section and the first connecting piece is greater than 0° and less than 180°
  • the first conductive core is in a "Z" shape.
  • the inverter includes two first connectors, the first conductive core of one of the first connectors is in a "Z" shape, and the first connector of the other is The first conductive core of the connector is linear, and the first conductive core and the first conductive core are arranged in a staggered manner, which can save the space of the inverter.
  • the first connector further includes an insulating part, and the insulating part covers the outer surface of the first connection section, so as to insulate the first connection section from the external environment. isolation, reducing the risk of a short circuit occurring in the first connection segment.
  • the first conductive core body and the first connecting piece are of an integrated structure to enhance the connection strength between the first conductive core body and the first connecting piece, so that the The service life of the first connector is increased.
  • the inverter further includes a temperature sensor, and the temperature sensor is located at the The circuit board is located on the peripheral side of the first connecting piece, and the temperature sensor is used to monitor the temperature of the first connecting piece.
  • the temperature sensor can be a thermistor, a thermocouple, etc., and is used to monitor the temperature of the first connecting piece, so as to prevent the inverter from heating or even catching fire due to poor contact caused by improper installation.
  • the temperature sensor is located on a peripheral side of a position where the first connection piece is connected to the connection terminal.
  • the inverter further includes a second connector
  • the second connector includes a second shell and a second conductive core
  • the second shell is fixed on the outside of the shell
  • the second conductive core is located in the second shell and extends into the inner side of the shell
  • the second conductive core includes a second connecting piece located inside the outer shell
  • the second connecting piece is a flat structure
  • the second connecting piece is fixed on the circuit board and electrically connected to the negative terminal of the inverter circuit, and at least part of the orthographic projection of the second connecting piece on the circuit board is located on the circuit board
  • the first connecting piece is electrically connected to the positive end of the inverter circuit.
  • the negative terminal of the inverter circuit refers to the end connected to the negative terminal of the inverter circuit and the photovoltaic module
  • the positive terminal of the inverter circuit refers to the end connected to the positive terminal of the inverter circuit and the photovoltaic module.
  • the photovoltaic module forms a loop, and the current flows from the positive terminal of the photovoltaic module to the positive terminal of the inverter circuit
  • the first connector is located between the positive terminal of the photovoltaic module and the positive terminal of the circuit board inverter circuit
  • the second connector is located between the negative terminal of the photovoltaic module and the negative terminal of the circuit board inverter circuit.
  • one end of the conductive core of the existing male connecting part on the market is processed by stamping, rolling, etc. to make the one end of the conductive core a flat structure, so as to make the first connector;
  • One end of the conductive core of some female connecting parts is processed by stamping, rolling, etc. to make one end of the conductive core flat, so as to make the second connector.
  • one end of the conductive core of the existing female connecting part on the market is processed by stamping, rolling, etc. to make one end of the conductive core a flat structure, so as to make the first connector;
  • One end of the conductive core of some male connecting parts is processed by stamping, rolling, etc. to make one end of the conductive core flat, so as to make the second connector.
  • the first connector and the second connector are directly and simply processed on the basis of the existing male connection parts and female connection parts in the market, so that the first connector and the second connector The manufacturing process is simpler and the production cost is saved.
  • the second connecting piece is provided with the opening, and the inverter further includes the fixing piece, the fixing piece passes through the opening and is fixed to the circuit board, so as to secure the The second connecting piece is fixedly connected to the circuit board.
  • the connection between the second connecting piece and the circuit board is simpler and more convenient.
  • the orthographic projection of the first connecting sheet on the circuit board does not overlap with the orthographic projection of the second connecting sheet on the circuit board, so that the first connection
  • the staggered distribution of the sheet and the second connecting sheet facilitates the installation of the first connector and the second connector on the circuit board, saves the installation space on the circuit board, and distributes multiple connections as densely as possible. device.
  • first connecting piece and the second connecting piece are located on the same side of the circuit board along the first direction. In one embodiment, the first connecting piece and the second connecting piece are respectively located on two sides of the circuit board along the first direction. In one embodiment, the first connecting piece and the second connecting piece are located on both sides of the circuit board along the first direction, and the orthographic projection of the first connecting piece on the circuit board At least partially overlap with the orthographic projection of the second connecting piece on the circuit board.
  • the inverter further includes a fixing seat, the fixing seat is located on the circuit board, a fixing groove is provided in the fixing seat, and a connecting groove is provided in the fixing groove.
  • One end of the connecting piece is connected to the circuit board, the other end of the connecting piece is fixed and electrically connected to the second connecting piece, and the fixing base is used to raise a plurality of the first connectors and The connection between the plurality of second connectors and the circuit board is stable and facilitates the installation and circuit connection of the inverter.
  • the height of the fixing seat along the first direction is greater than that of the connecting terminal along the first direction. the height of.
  • the second connector is directly electrically connected to the fixing base, and the first connector is electrically connected to the fixing base through the connecting piece.
  • the height of the fixing seat along the first direction is greater than the height of the connecting terminal along the first direction, so that the first connector and the second connector are staggered in the first direction, It is beneficial to save the installation space on the circuit board.
  • part of the first connectors are directly electrically connected to the fixing base, and another part of the first connectors are electrically connected to the fixing base through the connecting piece; part of the second connectors It is directly electrically connected to the fixing base, and another part of the second connector is electrically connected to the fixing base through the connecting piece.
  • the inverter further includes a third connector, the third connector is located at an end of the first connector away from the inverter, and the third connector includes A third shell and a third conductive core, the third shell is fixed to the first shell, the third conductive core is electrically connected to the first conductive core, the third connector is connected to the The first connector is a detachable connection, which facilitates assembly and disassembly of the inverter.
  • the third conductive core is located in the third housing and extends to the outside of the third housing in a direction away from the first connector, and the third conductive core is electrically connected to the first conductive core Inside the third casing or the first casing, a part of the third conductive core outside the third casing is connected to the photovoltaic module through a cable.
  • the inverter further includes a fourth connector
  • the fourth connector is located at an end of the second connector away from the inverter
  • the fourth connector includes The fourth casing and the fourth conductive core
  • the fourth casing is fixed to the second casing
  • the fourth conductive core is electrically connected to the second conductive core.
  • the fourth conductive core is located in the fourth housing and extends to the outside of the fourth housing in a direction away from the second connector, and the fourth conductive core is electrically connected to the second conductive core.
  • a part of the fourth conductive core outside the fourth casing is connected to the photovoltaic module through a cable.
  • the design of the detachable connection between the fourth connector and the second connector facilitates the assembly and disassembly of the photovoltaic system.
  • An embodiment of the present application also provides an inverter, the inverter includes a casing, a first connector and a socket, a circuit board is provided inside the casing, and an inverter circuit is arranged in the circuit board;
  • the first A connector includes a first shell and a first conductive core, the first shell is fixed on the shell, the first conductive core is located in the first shell and extends into the inside of the shell;
  • the The socket is located on the circuit board and is electrically connected with the circuit board. One end of the first conductive core located inside the shell is inserted into the socket and fixedly connected with the socket. The socket connects the first The conductive core is connected to the circuit board for shortening the distance between the first conductive core and the circuit board;
  • the end of the first conductive core away from the first connecting piece is used to connect to the photovoltaic module, and the first conductive core is used to transmit the direct current generated by the photovoltaic module to the inverter through the first connecting piece.
  • the inverter circuit converts the direct current into alternating current.
  • the shape of the end of the first conductive core connected to the socket is adapted to the socket.
  • One end of the first conductive core connected to the socket is a flat structure.
  • the end of the first conductive core connected to the socket is cylindrical, circular, three-dimensional cylindrical, etc., so The inner structure of the socket is adapted to the shape of the first conductive core, so that the first conductive core is electrically connected to the socket.
  • an embodiment of the present application provides a photovoltaic system
  • the photovoltaic system includes a photovoltaic module and the inverter according to any one of the above, the photovoltaic module and the first connector are far away from the circuit board One end of the photovoltaic module is electrically connected, and the direct current generated by the photovoltaic module is transmitted to the inverter circuit through the first connecting piece.
  • the circuit board can also be provided with a filter circuit and a measurement circuit, and the direct current of the photovoltaic module is filtered and measured by the filter circuit and the measurement circuit, and then output as alternating current through the inverter circuit.
  • the photovoltaic module includes a positive terminal and a negative terminal. Inside the photovoltaic module, current flows from the negative terminal of the photovoltaic module to the positive terminal of the photovoltaic module. Both the positive terminal and the negative terminal of the photovoltaic module are connected to the board connection.
  • the first connector is arranged on the between the positive terminal of the photovoltaic module and the circuit board.
  • the inverter further includes the second connector, and the second connector is connected between the negative terminal of the photovoltaic module and the circuit board.
  • the photovoltaic assembly includes at least one photovoltaic panel connected to the circuit board.
  • the photovoltaic module includes a plurality of photovoltaic panels connected in series, and through the series connection, the direct current of the plurality of photovoltaic panels is collected and connected to the circuit board through the first connector. In the inverter circuit connection.
  • the first connector may also be disposed between the negative terminal of the photovoltaic module and the circuit board.
  • the inverter includes two first connectors, one of which is used to connect to the positive end of the circuit board, and the other first connector is used to connect to The negative terminal of the circuit board is connected, that is, the first connector is provided between the positive terminal of the photovoltaic module and the circuit board, and between the negative terminal of the photovoltaic module and the circuit board, The photovoltaic component and the first connector can be electrically connected by cables.
  • the first connecting piece in the first connector is directly connected to the circuit board.
  • the connection between the first connector and the circuit board is more convenient, and the inverter
  • the installation of the inverter is simpler and more efficient; on the other hand, the cable-free connection between the first connector and the circuit board reduces the contact resistance and heat generation between the first connector and the circuit board, and improves the working efficiency of the inverter.
  • the first connector and the circuit board in the process of processing, transportation, and assembly, it can reduce the influence of poor contact between the first connector and the circuit board, and reduce the risk of excessive heating or even fire caused by the long-term connection between the first connector and the circuit board; on the other hand, the first The distance between the connecting piece and the circuit board is shortened, saving the space at the connection between the first connecting piece and the circuit board, improving the space utilization rate and power density of the inverter, effectively shortening the length of the photovoltaic input path and reducing the impact of the environment on the photovoltaic input interference.
  • Fig. 1 is a schematic structural diagram of a photovoltaic system provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of an inverter provided in an embodiment of the present application.
  • Fig. 3 is a schematic structural diagram of a first conductive core provided by an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of a first conductive core provided by an embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of a first conductive core provided in an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a first conductive core provided by an embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of a first conductive core provided in an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a first conductive core provided by an embodiment of the present application.
  • Fig. 9 is a schematic structural view of a first conductive core provided in an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a partial structure of an inverter provided in an embodiment of the present application.
  • Fig. 11 is a schematic diagram of a partial structure of an inverter provided in an embodiment of the present application.
  • Fig. 12 is a schematic diagram of a partial structure of an inverter provided in an embodiment of the present application.
  • Fig. 13 is a schematic structural diagram of a first conductive core provided in an embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of a first conductive core provided in an embodiment of the present application.
  • Fig. 15 is a schematic structural view of a first conductive core provided in an embodiment of the present application.
  • Fig. 16 is a schematic structural diagram of a first conductive core provided by an embodiment of the present application.
  • Fig. 17 is a schematic diagram of a partial structure of an inverter provided in an embodiment of the present application.
  • Fig. 18 is a schematic diagram of a partial structure of an inverter provided in an embodiment of the present application.
  • Fig. 19 is a schematic diagram of a partial structure of an inverter provided in an embodiment of the present application.
  • Fig. 20 is a schematic structural diagram of an inverter provided in an embodiment of the present application.
  • Fig. 21 is an exploded view of an inverter provided in an embodiment of the present application.
  • Fig. 22 is a schematic structural diagram of a first connector and a third connector provided in an embodiment of the present application.
  • Fig. 23 is a schematic structural diagram of a second connector and a fourth connector provided in an embodiment of the present application.
  • first, second, etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present application, unless otherwise specified, "plurality" means two or more.
  • orientation terms such as “upper” and “lower” are defined relative to the schematic placement orientation of the structures in the drawings. It should be understood that these directional terms are relative concepts, and they are used relative to The description and clarification of , which may vary accordingly to changes in the orientation in which the structure is placed.
  • Inverter It is a converter that converts direct current into constant frequency and constant voltage or frequency modulation and voltage regulation alternating current.
  • the function of the inverter is to convert the direct current generated by solar panels (also called photovoltaic panels) into alternating current.
  • MC4 connector MC is the abbreviation of Multi-Contact, 4 is the size of the metal core diameter, Multi-Contact is a Swiss company, MC4 connector is used for the connection of important components of photovoltaic power generation such as photovoltaic modules, combiner boxes and inverters .
  • FIG. 1 is a schematic diagram of a photovoltaic system 1 provided in an embodiment of the present application.
  • the photovoltaic system 1 includes an inverter 10 and a photovoltaic module 20.
  • the inverter 10 includes a housing 100 and a first connector 200.
  • There is a circuit board 110 inside the casing 100 and an inverter circuit (not shown in FIG. 1 ) is provided in the circuit board 110 .
  • the photovoltaic module 20 is electrically connected to the end of the first connector 200 away from the circuit board 110 .
  • the circuit board 110 can be a whole piece, or include a plurality of circuit sub-boards, and the plurality of circuit sub-boards are spliced into the circuit board 110, and the function of each circuit sub-board can be set according to needs, and the first connector 200 can be connected with One of the circuit boards is connected.
  • the inverter circuit is used to invert the direct current of the photovoltaic module 20 and then output it into alternating current.
  • the circuit board 110 may also be provided with a filter circuit and a measurement circuit.
  • the direct current of the photovoltaic module 20 is filtered by the filter circuit and the measurement circuit. After measurement and processing, it is output as alternating current through an inverter circuit.
  • the photovoltaic module 20 includes a positive terminal and a negative terminal. Inside the photovoltaic module 20 , current flows from the negative terminal of the photovoltaic module 20 to the positive terminal of the photovoltaic module 20 . Both the positive terminal and the negative terminal of the photovoltaic module 20 are connected to the circuit board 110 .
  • the first connector 200 is disposed between the positive end of the photovoltaic module 20 and the circuit board 110 .
  • the inverter 10 further includes a second connector 400 connected between the negative terminal of the photovoltaic module 20 and the circuit board 110 .
  • the first connector 200 may also be disposed between the negative terminal of the photovoltaic module 20 and the circuit board 110 .
  • the inverter 10 includes two first connectors 200, one of the first connectors 200 is used for connecting with the positive end of the circuit board 110, and the other first connector 200 is used for connecting with the positive end of the circuit board 110.
  • the negative terminal connection of the photovoltaic module 20 that is, the first connector 200 is provided between the positive terminal of the photovoltaic module 20 and the circuit board 110 , and between the negative terminal of the photovoltaic module 20 and the circuit board 110 .
  • the photovoltaic module 20 and the first connector 200 can be electrically connected through cables.
  • the photovoltaic module 20 includes at least one photovoltaic panel 21 , and the photovoltaic panel 21 is connected to the circuit board 110 .
  • the photovoltaic module 20 includes a plurality of photovoltaic panels 21 connected in series, and the plurality of photovoltaic panels 21 are connected in series The direct current is collected and connected to the inverter circuit in the circuit board 110 through the first connector 200 .
  • Figure 2 is a schematic diagram of the inverter 10 in an embodiment of the present application
  • Figure 3 is a cross-sectional view of the inverter 10 in Figure 2, wherein the inverter 10 includes a housing 100 and a first connection There is a circuit board 110 inside the shell 100, and an inverter circuit (not shown in the figure) is arranged in the circuit board 110;
  • the first connector 200 includes a first shell 210 and a first conductive core 220, the first shell 210 is fixed on the shell 100, the first conductive core 220 is located in the first shell 210 and extends into the inside of the shell 100,
  • the first conductive core 220 includes a first connecting piece 221 located inside the shell 100, the first connecting piece 221 is flat structure, the first connecting piece 221 is fixed on the circuit board 110 and electrically connected with the inverter circuit, the end of the first conductive core 220 away from the first connecting piece 221 is used to connect the photovoltaic module 20, and the first conductive core 220 is used to connect the
  • the first shell 210 in the first connector 200 is used to protect the first conductive core 220, and is used to fix the first conductive core 220 on the shell 100, the first conductive core 220 in the first connector 200
  • the direct current in the photovoltaic module 20 is transmitted to the inverter circuit in the circuit board 110 to convert direct current into alternating current.
  • Figure 4 is a top view of the first conductive core 220
  • Figure 5 is a side view of the first conductive core 220
  • the first conductive core 220 is straight
  • the first conductive core 220 The part of the core 220 away from the first connecting piece 221 is a hollow cylinder.
  • the first connecting piece 221 is a flat structure, which can increase the contact area between the first connecting piece 221 and the circuit board, facilitates fixing the first connecting piece 221 on the circuit board 110, and can ensure that the first connecting piece 221 is in contact with the circuit board.
  • Good electrical connectivity between 110 improves connection stability and electrical transmission stability.
  • the first connecting piece 221 is welded on the circuit board 110 , since the first connecting piece 221 has a flat structure, the first connecting piece 221 and the circuit board 110 have a larger welding area to provide welding stability.
  • the plane where the first connecting piece 221 is located is parallel to the surface of the circuit board 110 , which improves the stability and reliability of the connection between the first connecting piece 221 and the circuit board 110 .
  • the first connecting sheet 221 and the circuit board 110 are stacked along the first direction X, and at least part of the orthographic projection of the first connecting sheet 221 on the circuit board 110 along the first direction X is located on the circuit board 110 superior.
  • the first connecting sheet 221 and the circuit board 110 are stacked along the first direction X, so that at least part of the orthographic projection of the first connecting sheet 221 on the circuit board 110 is located on the circuit board 110.
  • This arrangement makes the second A connecting piece 221 and the circuit board 110 have a partial intersection in the second direction Y, that is, the distance between the first connecting piece 221 and the circuit board 110 is shortened, so that the first connecting piece 221 and the circuit board 110 are in the second direction Y It can be connected directly without providing a cable between the circuit board 110 and the first connection piece 221 in the second direction Y. Moreover, the distance between the first connecting piece 221 and the circuit board 110 is shortened, so that the current output from the first connecting piece 221 can be directly input to the circuit board 110, effectively shortening the length of the current input path of the inverter 10 and reducing the Environmental disturbances to the current input of the inverter 10 .
  • the first direction X intersects the second direction Y.
  • the first direction X is the thickness direction of the inverter 10
  • the second direction Y is the width direction of the inverter 10
  • the first direction X and the second direction are vertical.
  • the orthographic projection of the first connecting piece 221 on the circuit board 110 may be located outside the circuit board 110 , and the first connecting piece 221 may be connected to the circuit board 110 through a connecting component.
  • the first connecting sheet 221 is formed by stretching one end of the first conductive core 220 , which can save manufacturing cost.
  • the first conductive core 220 is integrally machined or integrally formed by injection molding.
  • FIG. 10 is an enlarged view of the layout of the first connector 200 in the inverter 10 and its surrounding parts.
  • the casing 210 is fixedly connected with the casing 100 .
  • the first shell 210 wraps the part of the first conductive core 220 outside the shell 100 , and the first conductive core 220 is fixed to the shell 100 by being fixed to the first shell 210 .
  • the existing MC4 or MC4-like connectors in the market include a detachably connected male connecting part and a female connecting part. Connect to the photovoltaic module 20 ; or connect the end of the female connecting part away from the male connecting part to the circuit board 110 , and connect the end of the male connecting part far away from the female connecting part to the photovoltaic module 20 .
  • the first connector 200 is manufactured by stamping, rolling and other processes on one end of the conductive core of the existing male or female connecting parts in the market to make the one end of the conductive core flat.
  • MC4 or MC4-like connectors are directly connected to the circuit board 110 through cables. Due to the limited internal space of the inverter 10, the bending radius of the cables does not meet the standard, and the cables inside the inverter 10 are messy.
  • the first connecting piece 221 in the first connector 200 can be directly connected to the circuit board 110.
  • the first connector 200 is connected to the circuit board 110.
  • the connection is more convenient, which makes the installation of the inverter 10 simpler and more efficient; on the other hand, the cable-free connection between the first connector 200 and the circuit board 110 reduces the contact between the first connector 200 and the circuit board 110 The resistance and heat generation improve the working efficiency of the inverter 10.
  • the influence of poor contact between the first connector 200 and the circuit board 110 can be reduced during processing, transportation, and assembly, and the contact between the first connector 200 and the circuit board 110 can be reduced.
  • the distance between the first connecting piece 221 and the circuit board 110 is shortened, saving the space at the connection between the first connecting piece 221 and the circuit board 110, and improving the performance of the inverter.
  • the space utilization rate and power density of 10 effectively shorten the length of the photovoltaic input path and reduce the interference of the environment on the photovoltaic input.
  • the first connecting piece 221 is provided with an opening 222 (as shown in FIG. 4 ), and the inverter 10 also includes a fixing member 111 (as shown in FIG. 10 ). ), the fixing member 111 passes through the opening 222 and is fixed to the circuit board 110 to securely connect the first connecting piece 221 to the circuit board 110 .
  • the arrangement of the opening 222 makes the connection between the first connecting piece 221 and the circuit board 110 simpler and more convenient.
  • the shape of the opening 222 can be a round hole (as shown in Figure 4), an oval hole (as shown in Figure 6), a square hole (as shown in Figure 7), a U-shaped notch (as shown in Figure 8 and 9) or any other suitable shape.
  • the fixing member 111 may be a screw, a buckle or the like.
  • the shape of the opening 222 is a round hole
  • the fixing member 111 is a matching bolt 1111 and a nut 1112
  • the circuit board 110 is provided with an opening 112 penetrating through the circuit board 110, and the bolts 1111 are passed through in turn.
  • the opening 222 Through the opening 222 , the hole 112 and the nut 1112 , the first connecting piece 221 is fixed on the circuit board 110 .
  • the circuit board 110 is provided with connection terminals 113 (as shown in FIG. Sheet 221 and circuit board 110.
  • the first connection piece 221, the connection terminal 113 and the circuit board 110 are stacked along the first direction X, the first direction X is perpendicular to the circuit board 110, the connection terminal 113 is fixed on the circuit board 110 and is electrically connected to the circuit board 110, and the connection terminal 113 is provided with a tunnel 1131, and the first connecting piece 221 is provided with an opening 222.
  • the inverter 10 also includes a fixing piece 111.
  • the fixing piece 111 passes through the opening 222 along the first direction X and extends into the tunnel 1131, and the first connection The piece 221 is fixed on the connection terminal 113 .
  • the connection between the first connecting piece 221 and the circuit board 110 is simpler and more convenient.
  • threads are provided in the channel 1131 , the fixing member 111 is a screw, and the screw and the thread cooperate with each other to make the fixing of the first connecting piece 221 and the connecting terminal 113 more reliable.
  • the circuit board 110 is provided with a socket 114 (as shown in FIG. 12 ), the socket 114 is electrically connected to the circuit board 110, the first connecting piece 221 is inserted into the socket 114 and is electrically connected to the socket 114, and then the first The connection piece 221 is electrically connected to the circuit board 110 .
  • the internal structure of the socket 114 is not limited to the structure shown in FIG. 12 , as long as the first connecting piece 221 can be fixed to the socket 114 and electrically connected to the socket 114 when the first connecting piece 221 is inserted into the socket 114 .
  • the first conductive core 220 includes a first conductive core body 223 and a first connecting piece 221 , the first conductive core body 223 passes through the outer and inner sides of the housing 100 , the first conductive core body 223 passes through the outer and inner sides of the housing 100 , and A connection piece 221 is located at one end of the first conductive core body 223 , and the extension direction of the first connection piece 221 is the same as that of the first conductive core body 223 .
  • the extension direction of the first conductive core body 223 is the second direction Y, and the second direction Y intersects the first direction X. In this embodiment, the second direction Y intersects the first direction X perpendicularly.
  • the first conductive core 220 is straight and easy to process.
  • the first conductive core 220 includes a first conductive core body 223 and a first connecting sheet 221, the first conductive core body 223 passes through the outside and inside of the housing 100, the first The connecting piece 221 is located at one end of the first conductive core body 223 , and the extending direction of the first connecting piece 221 intersects the extending direction of the first conductive core body 223 .
  • the first connecting piece 221 is linear, and the angle between the first connecting piece 221 and the first conductive core body 223 is greater than 0° and less than 180°, so that the first connector 200 can be adapted to different installation environments.
  • the first connecting piece 221 is arc-shaped.
  • the first conductive core 220 further includes a first connection section 224 , and the first connection section 224 is located between the first conductive core body 223 and the first connection sheet 221 , the extending direction of the first connecting section 224 intersects the extending directions of the first conductive core body 223 and the first connecting piece 221 .
  • the angle between the first connecting section 224 and the first conductive core body 223 is greater than 0° and less than 180°, and the angle between the first connecting section 224 and the first connecting piece 221 is greater than 0° and less than 180°.
  • the first conductive core 220 is in a "Z" shape, which enables the first connector 200 to adapt to different installation environments.
  • the first conductive core 220(a) is in a "Z" shape (as shown in FIG. 16 ), the first conductive core 220(b) is linear, and the first conductive core 220(a) and the first The conductive cores 220(b) are staggered to save the space of the inverter 10 .
  • the first connector 200 further includes an insulating part 230 , and the insulating part 230 covers the outer surface of the first connecting section 224 .
  • the first connection section 224 can improve the installation flexibility of the first conductive core 220, it also increases the length of the first conductive core 220, and in some cases, a short circuit will occur when a conductive part falls on the first connection section 224
  • the first connection section 224 is insulated from the external environment through the insulating part 230 , reducing the risk of a short circuit in the first connection section 224 and improving the safety of the first connector 200 .
  • the first conductive core body 223 and the first connecting sheet 221 are an integral structure.
  • the integrated structure has higher strength, which enhances the connection strength between the first conductive core body 223 and the first connecting piece 221 , and prolongs the service life of the first connector 200 .
  • the inverter 10 further includes a temperature sensor 300 (as shown in FIG. 10 ), and the temperature sensor 300 is located on the circuit board 110 and located on a peripheral side of the first connecting piece 221 .
  • the temperature sensor can be a thermistor, a thermocouple, etc., and is used to monitor the temperature of the first connecting piece 221 to prevent the inverter 10 from heating or even igniting due to poor contact caused by improper installation.
  • the temperature sensor 300 is located on the peripheral side of the position where the first connection piece 221 is connected to the connection terminal 113 .
  • FIG. 17 is a schematic structural diagram of the second connector 400 installed on the housing 100.
  • the inverter 10 further includes a second connector 400.
  • the second connector 400 includes a second shell 410 and a second conductive core 420, the second shell 410 is fixed on the outside of the shell 100, the second conductive core 420 is located in the second shell 410 and extends into the inside of the shell 100, the second conductive core 420 includes The second connecting piece 421 located inside the housing 100 is flat.
  • the second connecting piece 421 is fixed on the circuit board 110 and electrically connected to the negative terminal of the inverter circuit. At least part of the orthographic projection of the second connecting piece 421 on the circuit board 110 is located on the circuit board 110 , and the first connecting piece 221 is electrically connected to the positive terminal of the inverter circuit.
  • the negative terminal of the inverter circuit refers to the end connected to the negative terminal of the inverter circuit and the photovoltaic module 20
  • the positive terminal of the inverter circuit refers to the end connected to the positive terminal of the inverter circuit and the photovoltaic module 20.
  • the inverter circuit and the photovoltaic assembly 20 form a loop, and the current flows from the positive end of the photovoltaic assembly 20 to the positive end of the inverter circuit.
  • the first connector 200 is located between the positive end of the photovoltaic assembly 20 and the positive end of the inverter circuit of the circuit board 110
  • the second connector 400 is located between the negative terminal of the photovoltaic module 20 and the negative terminal of the inverter circuit of the circuit board 110 .
  • one end of the conductive core of the existing male connecting part on the market is processed by stamping, rolling, etc. to make the one end of the conductive core a flat structure, so as to make the first connector 200;
  • One end of the conductive core of the female connecting part is processed by stamping, rolling, etc. to make one end of the conductive core flat, so as to make the second connector 400 .
  • one end of the conductive core of the existing female connecting part on the market is processed by stamping, rolling, etc. to make one end of the conductive core a flat structure, so as to make the first connector 200;
  • One end of the conductive core of the male connecting part is processed by stamping, rolling, etc.
  • the first connector 200 and the second connector 400 are directly and simply processed on the basis of the existing male connection parts and female connection parts in the market, making the manufacturing process of the first connector 200 and the second connector 400 more efficient. Simple and save production cost.
  • the second connecting piece 421 is provided with an opening 422, and the inverter 10 further includes a fixing member 111 (as shown in FIG.
  • the second connecting piece 421 is fixedly connected to the circuit board 110 .
  • the arrangement of the opening 422 makes the connection between the second connecting piece 421 and the circuit board 110 simpler and more convenient.
  • the orthographic projection of the first connecting piece 221 on the circuit board 110 does not overlap with the orthographic projection of the second connecting piece 421 on the circuit board 110 (as shown in FIG. 2 ).
  • the first connecting piece 221 and the second connecting piece 421 are distributed in a staggered manner, on the one hand, it is beneficial to install the first connector and the second connector on the circuit board 110, and on the other hand, it can save the installation space on the circuit board 110, as far as possible Densely distribute multiple connectors.
  • first connecting piece 221 and the second connecting piece 421 are located on the same side of the circuit board 110 along the first direction X (as shown in FIG. 2 ).
  • first connecting piece 221 and the second connecting piece 421 are respectively located on two sides of the circuit board 110 along the first direction X (as shown in FIG. 19 ). In one embodiment, the first connecting piece 221 and the second connecting piece 421 are located on both sides of the circuit board 110 along the first direction X, and the orthographic projection of the first connecting piece 221 on the circuit board 110 is the same as that of the second connecting piece 421 .
  • the orthographic projections on the circuit board 110 are at least partially overlapping.
  • Figure 20 is a schematic diagram of an inverter provided in another embodiment of the present application
  • Figure 21 is an exploded view of the inverter in Figure 20
  • the inverter 10 also includes a fixed seat 500 (as shown in Figure 21), the fixed seat 500 is located on the circuit board 110, the fixed seat 500 is provided with a fixed groove 510, the fixed groove 510 has a connector 511, one end of the connector 511 It is connected with the circuit board 110 , and the other end of the connecting piece 511 is fixed and electrically connected with the second connecting piece 421 .
  • the fixing seat 500 is located inside the housing 100, and the fixing seat 500 is located on the side of the circuit board 110 close to the first connector 200.
  • the first connector 200 is directly electrically connected to the fixing seat 500
  • the second connector 400 is electrically connected to the fixing base 500 through the connecting piece 511 .
  • the fixing seat 500 Through the setting of the fixing seat 500, on the one hand, the plurality of first connectors 200 and the plurality of second connectors 400 are fixed together, and the connection between the plurality of first connectors 200, the plurality of second connectors 400 and the circuit board 110 is improved. Connection stability; on the other hand, rationally planning and arranging the lines through the fixing seat 500 is more conducive to the installation and line connection of the inverter 10 .
  • the second connector 400 is arranged farther from the circuit board 110 than the first connector 200 in the first direction X, and the positions of the second connector 400 and the first connector 200 are staggered, which is beneficial to save circuits In the installation space on the board 110, a plurality of second connectors 400 and first connectors 200 are distributed as densely as possible.
  • the height of the fixing seat 500 along the first direction X is greater than the height of the connection terminal 113 along the first direction X Spend.
  • the second connector 400 is directly electrically connected to the fixing base 500
  • the first connector 200 is electrically connected to the fixing base 500 through the connecting member 511 .
  • the height of the fixing seat 500 along the first direction X is greater than the height of the connection terminal 113 along the first direction X, so that the first connector 200 and the second connector 400 are arranged staggered in the first direction X, which is beneficial to saving the space on the circuit board 110. installation space.
  • part of the first connector 200 is directly electrically connected to the fixing base 500, and another part of the first connector 200 is electrically connected to the fixing base 500 through the connecting piece 511; part of the second connector 400 is directly electrically connected to the fixing base 500. The other part of the second connector 400 is electrically connected to the fixing base 500 through the connecting piece 511 .
  • the inverter 10 further includes a third connector 600 (as shown in FIG. 22 ), the third connector 600 is located at the end of the first connector 200 away from the inverter 10, and the third connector 600 is connected to
  • the device 600 includes a third shell 610 and a third conductive core 620 , the third shell 610 is fixed to the first shell 210 , and the third conductive core 620 is electrically connected to the first conductive core 220 .
  • the third conductive core 620 is located in the third shell 610 and extends to the outside of the third shell 610 in a direction away from the first connector 200 , the third conductive core 620 and the first conductive core 220 are electrically connected to the third shell Inside the body 610 or the first housing 210 , the part of the third conductive core 620 located outside the third housing 610 is connected to the photovoltaic module 20 through cables.
  • the design of the detachable connection between the third connector 600 and the first connector 200 facilitates assembly and disassembly between the photovoltaic module 20 and the inverter 10 .
  • the inverter 10 further includes a fourth connector 700 (as shown in FIG. 23 ), the fourth connector 700 is located at the end of the second connector 400 away from the inverter 10, and the fourth connector 700 is connected to
  • the device 700 includes a fourth shell 710 and a fourth conductive core 720 , the fourth shell 710 is fixed to the second shell 410 , and the fourth conductive core 720 is electrically connected to the second conductive core 420 .
  • the fourth conductive core 720 is located in the fourth housing 710 and extends to the outside of the fourth housing 710 in a direction away from the second connector 400 , the fourth conductive core 720 and the second conductive core 420 are electrically connected to the fourth housing Inside the body 710 or the second housing 410 , the part of the fourth conductive core 720 located outside the fourth housing 710 is connected to the photovoltaic module 20 through a cable.
  • the design of the detachable connection between the fourth connector 700 and the second connector 400 facilitates the assembly and disassembly of the photovoltaic system 1 .
  • the present application also provides an inverter 10, including a housing 100, a first connector 200 and a socket 114, a circuit board 110 is provided inside the housing 100, and an inverter circuit is arranged in the circuit board 110;
  • the first The connector 200 includes a first shell 210 and a first conductive core 220, the first shell 210 is fixed on the shell 100, the first conductive core 220 is located in the first shell 210 and extends into the inside of the shell 100;
  • the socket 114 is located in the circuit On the board 110 and electrically connected with the circuit board 110 , one end of the first conductive core 220 located inside the shell 100 is inserted into the socket 114 and fixedly connected with the socket 114 for shortening the distance between the first conductive core 220 and the circuit board 110 .
  • the end of the first conductive core 220 away from the first connecting piece 221 is used to connect the photovoltaic module 20, the first conductive core 220 is used to transmit the direct current generated by the photovoltaic module 20 to the inverter circuit through the first connecting piece 221, and the inverter circuit will Direct current is converted to alternating current.
  • the shape of the end of the first conductive core 220 connected to the socket 114 is adapted to the socket 114 .
  • the end of the first conductive core 220 connected to the socket 114 is a flat structure.
  • the end of the first conductive core 220 connected to the socket 114 is cylindrical, circular, three-dimensional cylindrical, etc.
  • the internal structure of the socket 114 is adapted to the shape of the first conductive core 220 , so that the first conductive core 220 is electrically connected to the socket 114 .

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Abstract

一种逆变器（10）及光伏系统（1），逆变器（10）包括外壳（100）和第一连接器（200），外壳（100）内侧具有电路板（110），电路板（110）中设有逆变电路；第一连接器（200）包括第一壳体（210）和第一导电芯（220），第一壳体（210）固定在外壳（100）上，第一导电芯（220）位于第一壳体（210）内并伸入外壳（100）内侧，第一导电芯（220）包括位于外壳（100）内侧的第一连接片（221），第一连接片（221）为扁平结构，第一连接片（221）固定在电路板（110）上并与逆变电路电连接。通过将第一连接片（221）设置为扁平结构，第一连接片（221）与电路板（110）可免线缆连接，使第一连接器（200）与电路板（110）的连接更为便捷、接触电阻更小，提高了逆变器的安装效率、空间利用率及安全性。

Description

逆变器及光伏系统
本申请要求于2022年2月15日提交中国专利局、申请号为202220304849.8、申请名称为“逆变器及光伏系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及光伏技术领域，特别涉及一种逆变器及光伏系统。
背景技术
在光伏系统中，光伏组件的电能需要传输至逆变器中，以实现电流的逆变，使电能进入终端用户或者并入电网。在光伏组件端可以安装公头连接器，在逆变器端可以安装母头连接器，公头连接器与母头连接器对接后便可实现光伏组件与逆变器之间的电连接。在实际应用时，在逆变器端，连接器的导电芯通过一段线缆与逆变器内部的电路板电连接，由于线缆与导电芯和电路板之间均要实现电连接，导致安装步骤较为复杂，且容易出现连接可靠性问题，现有方式将导电芯的端部设置插接端子，将插接端子插入电路板中来实现电连接，无需线缆，但插接端子插入电路板的连接稳定较差，需要额外的连接机构来连接导电芯和电路板，结构复杂。
发明内容
本申请提供无需线缆且能够提升连接器与电路板连接稳定性的逆变器。
第一方面，本申请一实施方式提供一种逆变器，所述逆变器包括外壳和第一连接器，所述外壳内侧具有电路板，所述电路板中设有逆变电路；所述第一连接器包括第一壳体和第一导电芯，所述第一壳体固定在所述外壳上，所述第一导电芯位于所述第一壳体内并伸入所述外壳内侧，所述第一导电芯包括位于所述外壳内侧的第一连接片，所述第一连接片为扁平结构，所述第一连接片固定在所述电路板上并与所述逆变电路电连接，所述第一导电芯远离所述第一连接片的一端用于连接光伏组件，所述第一导电芯用于将所述光伏组件产生的直流电通过所述第一连接片传输至所述逆变电路，所述逆变电路将所述直流电转换为交流电，所述扁平结构用于提升所述第一连接片与所述电路板固定时连接稳定性和传输电流稳定性。
所述第一连接器中的所述第一壳体用于保护所述第一导电芯，并用于固定将所述第一导电芯固定在所述外壳上，所述第一连接器中的所述第一导电芯用于传输电，将所述光伏组件中的直流电传输至所述电路板中的逆变电路，以实现直流电转换为交流电。
在一实施方式中，所述第一导电芯为直条型，所述第一导电芯远离所述第一连接片的部分为空心圆柱形。其中，所述第一连接片为扁平结构，可增加所述第一连接片与电路板的接触面积，便于将所述第一连接片固定在所述电路板上，且可保证所述第一连接片与所述电路板之间良好的电连接性，提升连接稳定性和电性传输稳定性。在一实施方式中，所述第一连接片焊接在所述电路板上，由于所述第一连接片为扁平结构，使得所述第一连接片与所述电路板具有较大的焊接面积，提供焊接稳定性。在一实施方式中，所述第一连接片所在平面与所述电路板的板面平行，提升所述第一连接片与所述电路板连接稳定性和可靠性。
在一种可能的实现方式中，所述第一连接片和所述电路板沿第一方向层叠设置，所述第 一连接片沿所述第一方向在所述电路板上的至少部分投影位于所述电路板上，所述第一连接片与所述电路板在第二方向上具有部分交叉，以用于缩短了所述第一连接片与所述电路板之间沿所述第二方向上的距离，所述第一方向与所述第二方向垂直。所述第一连接片与所述电路板在所述第二方向可直接连接，而无需在所述第二方向上，在所述电路板和所述第一连接片之间设置线缆。并且所述第一连接片与所述电路板之间的距离缩短，可使得从所述第一连接片输出的电流直接输入至所述电路板，有效减短了所述逆变器的电流输入路径长度且减小环境对所述逆变器的电流输入的干扰。
在一实施方式中，所述第一方向为所述逆变器的厚度方向，所述第二方向为所述逆变器的宽度方向。
在一实施方式中，所述第一连接片在所述电路板上的正投影可位于所述电路板以外，所述第一连接片可通过连接部件与所述电路板连接。
在一实施方式中，所述第一连接片是由所述第一导电芯的一端拉伸形成，可节约制备成本。在一实施方式中，所述第一导电芯整体机械加工或者一体注塑形成。
其中，所述第一壳体与所述外壳通过螺丝、焊接等方式固定连接。在一实施方式中，所述第一壳体延伸至所述外壳内侧，通过螺母将所述第一壳体与所述外壳固定连接。所述第一壳体将所述第一导电芯位于所述外壳外侧的部分包裹，所述第一导电芯通过与所述第一壳体固定进而固定在所述外壳上。
其中，市场现有的MC4或仿MC4型连接器包括可拆卸连接的公连接部件和母连接部件，公连接部件远离母连接部件的一端与所述电路板连接，母连接部件远离公连接部件的一端与所述光伏组件连接；或母连接部件远离公连接部件的一端与所述电路板连接，公连接部件远离母连接部件的一端与所述光伏组件连接。在一实施方式中，对市场上现有的公连接部件或母连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成所述第一连接器。
在现有技术中，MC4或仿MC4型连接器通过线缆直接与所述电路板连接，由于所述逆变器内部空间有限，导致线缆折弯半径不达标，且所述逆变器内部线缆凌乱，导致所述逆变器的安装困难、安装效率低下，且导致连接不良的问题；当所述逆变器与多个所述光伏组件的多个MC4或仿MC4型连接器连接时，所述逆变器内部需要更多的线缆连接MC4或仿MC4型连接器和所述电路板，使得所述逆变器内部线缆更加凌乱，导致所述逆变器的安装更加困难；并且，线缆的两端均需要OT端子来分别与电路板和MC4型连接器连接，使得整个回路的接触电阻及发热高，整机效率下降。
而在本申请中，通过将所述第一连接器中所述第一连接片设置为扁平结构，所述第一连接片可直接与所述电路板连接，一方面，使所述第一连接器与所述电路板的连接更为便捷，使所述逆变器的安装更加简单、高效；另一方面，所述第一连接器与所述电路板的无线缆连接，减小所述第一连接器与所述电路板的接触电阻及发热，提升了所述逆变器的工作效率，同时，在加工、运输、装配过程中可减小所述第一连接器与所述电路板接触不良的影响，降低所述第一连接器与所述电路板长期连接而引起的发热超标甚至起火的风险；再一方面，所述第一连接片与所述电路板的距离缩短，节约所述第一连接片与所述电路板连接处的空间，提升了所述逆变器的空间利用率和功率密度，有效减短了光伏输入路径长度且减小环境对光伏输入的干扰。
在一种可能的实现方式中，所述第一连接片上设有开口，所述逆变器还包括固定件，所述固定件穿过所述开口并与所述电路板固定，以将所述第一连接片与所述电路板固定连接。 通过所述开口的设置，使所述第一连接片与所述电路板的连接更为简单、便捷。
在一实施方式中，所述开口的形状可以为圆孔、椭圆孔、方形孔、U形缺口或其他任意适配的形状。在一实施方式中，所述固定件可以为螺钉、卡扣等。在一实施方式中，所述开口的形状为圆孔，所述固定件为配套的螺栓和螺母，所述电路板上设有贯穿所述电路板的开孔，所述螺栓依次穿过所述开口、所述开孔和所述螺母，以将所述第一连接片固定在所述电路板上。
在一种可能的实现方式中，所述电路板上设有连接端子，所述第一连接片、所述连接端子和所述电路板沿第一方向依次层叠设置，所述第一方向与所述电路板垂直，所述连接端子固定在所述电路板上并与所述电路板电连接，所述连接端子设有孔道，所述第一连接片上设有开口，所述逆变器还包括固定件，所述固定件沿所述第一方向穿过所述开口并伸入所述孔道内，将所述第一连接片固定在所述连接端子上。通过所述连接端子的设置，使所述第一连接片与所述电路板的连接更为简单、便捷。在一实施方式中，所述孔道内设有螺纹，所述固定件为螺钉，螺钉与螺纹相互配合，可以使所述第一连接片与所述连接端子的固定更加可靠。
在一实施方式中，所述电路板上设有所述插座，所述插座与所述电路板电连接，所述第一连接片插入所述插座内且与所述插座电连接，进而所述第一连接片与所述电路板电连接。其中所述插座的内部结构不作限制，只需满足当所述第一连接片插入所述插座中，能够使得所述第一连接片与所述插座固定并与所述插座电连接即可。
在一种可能的实现方式中，所述第一导电芯包括第一导电芯本体和所述第一连接片，所述第一导电芯本体穿过所述外壳的外侧和内侧，所述第一连接片位于所述第一导电芯本体的一端，所述第一连接片的延伸方向与所述第一导电芯本体的延伸方向相同，以便于所述第一导电芯的加工。
在一种可能的实现方式中，所述第一导电芯包括第一导电芯本体和所述第一连接片，所述第一导电芯本体穿过所述外壳的外侧和内侧，所述第一连接片位于所述第一导电芯本体的一端，所述第一连接片的延伸方向与所述第一导电芯本体的延伸方向相交，以使所述第一导电芯能够适应多种安装环境。在一实施方式中，所述第一连接片为直线型，所述第一连接片与所述第一导电芯本体的夹角大于0°且小于180°。在一实施方式中，所述第一连接片为弧形。
在一种可能的实现方式中，所述第一导电芯还包括第一连接段，所述第一连接段位于所述第一导电芯本体和所述第一连接片之间，所述第一连接段的延伸方向与所述第一导电芯本体、所述第一连接片的延伸方向均相交，以使所述第一导电芯能够适应多种安装环境。在一实施方式中，所述第一连接段与所述第一导电芯本体的夹角大于0°且小于180°，所述第一连接段与所述第一连接片的夹角大于0°且小于180°，所述第一导电芯呈“Z”字形。
在一实施方式中，所述逆变器包括两个所述第一连接器，其中之一的所述第一连接器的所述第一导电芯呈“Z”字形，另一个所述第一连接器的所述第一导电芯呈直线型，所述第一导电芯和所述第一导电芯错开排布，可节省所述逆变器的空间。
在一种可能的实现方式中，所述第一连接器还包括绝缘部，所述绝缘部覆盖在所述第一连接段的外表面，以用于将所述第一连接段与外部环境绝缘隔离，降低所述第一连接段发生短路的风险。
在一种可能的实现方式中，所述第一导电芯本体与所述第一连接片为一体化结构，增强所述第一导电芯本体与所述第一连接片的连接强度，使所述第一连接器的使用寿命增长。
在一种可能的实现方式中，所述逆变器还包括温度传感器，所述温度传感器位于所述电 路板上，且位于所述第一连接片的周侧，所述温度传感器用于监测所述第一连接片的温度。温度传感器可为热敏电阻、热电偶等，用于监测所述第一连接片的温度，防止由于安装不到位造成接触不良导致所述逆变器发热甚至起火问题。在一实施方式中，所述温度传感器位于所述第一连接片与所述连接端子连接的位置的周侧。
在一种可能的实现方式中，所述逆变器还包括第二连接器，所述第二连接器包括第二壳体和第二导电芯，所述第二壳体固定在所述外壳外侧，所述第二导电芯位于所述第二壳体内并伸入所述外壳内侧，所述第二导电芯包括位于所述外壳内侧的第二连接片，所述第二连接片为扁平结构，所述第二连接片固定在所述电路板上并与所述逆变电路的负端电连接，且所述第二连接片在所述电路板上的至少部分正投影位于所述电路板上，所述第一连接片与所述逆变电路的正端电连接。
逆变电路的负端是指逆变电路与所述光伏组件的负端连接的一端，逆变电路的正端是指逆变电路与所述光伏组件的正端连接的一端，逆变电路与所述光伏组件形成回路，电流从所述光伏组件的正端流向逆变电路的正端，所述第一连接器位于所述光伏组件的正端和所述电路板逆变电路的正端之间，所述第二连接器位于所述光伏组件的负端和所述电路板逆变电路的负端之间。
在一实施方式中，对市场上现有的公连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成所述第一连接器；对市场上现有的母连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成所述第二连接器。在一实施方式中，对市场上现有的母连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成所述第一连接器；对市场上现有的公连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成所述第二连接器。在市场现有的公连接部件和母连接部件的基础上直接、简单加工制得所述第一连接器和所述第二连接器，使所述第一连接器和所述第二连接器的制造工艺更为简便、节约生产成本。
在一实施方式中，所述第二连接片上设有所述开口，所述逆变器还包括所述固定件，所述固定件穿过所述开口并与所述电路板固定，以将所述第二连接片与所述电路板固定连接。通过所述开口的设置，使所述第二连接片与所述电路板的连接更为简单、便捷。
在一种可能的实现方式中，所述第一连接片在所述电路板上的正投影与所述第二连接片在所述电路板上的正投影不重叠，以使所述第一连接片和所述第二连接片错开分布，有利于第一连接器和第二连接器安装在所述电路板上，且可节约所述电路板上的安装空间，尽可能密集地分布多个连接器。
在一实施方式中，所述第一连接片和所述第二连接片位于所述电路板沿所述第一方向的同一侧。在一实施方式中，所述第一连接片和所述第二连接片分别位于所述电路板沿所述第一方向的两侧。在一实施方式中，所述第一连接片和所述第二连接片位于所述电路板沿所述第一方向的两侧，且所述第一连接片在所述电路板上的正投影与所述第二连接片在所述电路板上的正投影至少部分重叠。
在一种可能的实现方式中，所述逆变器内还包括固定座，所述固定座位于所述电路板上，所述固定座内设有固定凹槽，所述固定凹槽内具有连接件，所述连接件的一端与所述电路板连接，所述连接件的另一端与所述第二连接片固定且电连接，所述固定座用于提高多个所述第一连接器和多个所述第二连接器与所述电路板的连接稳定性且有利于所述逆变器的安装与线路连接。
在一实施方式中，所述固定座沿所述第一方向的高度大于所述连接端子沿所述第一方向 的高度。在一实施方式中，所述第二连接器直接与所述固定座电连接，所述第一连接器通过所述连接件与所述固定座电连接。所述固定座沿所述第一方向的高度大于所述连接端子沿所述第一方向的高度，使得所述第一连接器和所述第二连接器在所述第一方向上错开设置，有利于节约所述电路板上的安装空间。
在一实施方式中，部分所述第一连接器直接与所述固定座电连接，另一部分所述第一连接器通过所述连接件与所述固定座电连接；部分所述第二连接器直接与所述固定座电连接，另一部分所述第二连接器通过所述连接件与所述固定座电连接。
在一种可能的实现方式中，所述逆变器还包括第三连接器，所述第三连接器位于所述第一连接器远离所述逆变器的一端，所述第三连接器包括第三壳体和第三导电芯，所述第三壳体与所述第一壳体固定，所述第三导电芯与所述第一导电芯电连接，所述第三连接器与所述第一连接器为可拆卸连接，便于所述逆变器的组装和拆卸。其中，所述第三导电芯位于所述第三壳体内并朝向远离所述第一连接器的方向延伸至所述第三壳体外，所述第三导电芯和所述第一导电芯电连接于所述第三壳体或所述第一壳体内部，所述第三导电芯位于所述第三壳体外的部分通过电缆线与所述光伏组件连接。
在一种可能的实现方式中，所述逆变器还包括第四连接器，所述第四连接器位于所述第二连接器远离所述逆变器的一端，所述第四连接器包括所述第四壳体和所述第四导电芯，所述第四壳体与所述第二壳体固定，所述第四导电芯与所述第二导电芯电连接。其中，所述第四导电芯位于所述第四壳体内并朝向远离所述第二连接器的方向延伸至所述第四壳体外，所述第四导电芯和所述第二导电芯电连接于所述第四壳体或所述第二壳体内部，所述第四导电芯位于所述第四壳体外的部分通过电缆线与所述光伏组件连接。通过所述第四连接器和所述第二连接器可拆卸连接的设计，便于所述光伏系统的组装和拆卸。
本申请一实施方式还提供一种逆变器，所述逆变器包括外壳、第一连接器和插座，所述外壳内侧具有电路板，所述电路板中设有逆变电路；所述第一连接器包括第一壳体和第一导电芯，所述第一壳体固定在所述外壳上，所述第一导电芯位于所述第一壳体内并伸入所述外壳内侧；所述插座位于所述电路板上并与所述电路板电连接，所述第一导电芯位于所述外壳内侧的一端插入所述插座中并与所述插座固定连接，所述插座将所述第一导电芯和所述电路板连接，用于缩短所述第一导电芯和所述电路板之间的距离；
所述第一导电芯远离所述第一连接片的一端用于连接光伏组件，所述第一导电芯用于将所述光伏组件产生的直流电通过所述第一连接片传输至所述逆变电路，所述逆变电路将所述直流电转换为交流电。
在一实施方式中，所述第一导电芯与所述插座连接的一端的形状与所述插座适配。所述第一导电芯与所述插座连接的一端为扁平结构，在其他实施方式中，所述第一导电芯与所述插座连接的一端为圆柱形、圆环形、立体柱形等，所述插座的内部结构与所述第一导电芯的形状适配，以使得所述第一导电芯与所述插座之间电连接。
第二方面，本申请一实施方式提供一种光伏系统，所述光伏系统包括光伏组件和如上任一项所述的逆变器，所述光伏组件与所述第一连接器远离所述电路板的一端电连接，所述光伏组件产生的直流电通过所述第一连接片传输至所述逆变电路。
其中，所述电路板中还可设有滤波电路和测量电路，所述光伏组件的直流电经过滤波电路和测量电路进行滤波、测量处理后，通过逆变电路输出为交流电。所述光伏组件包括正端和负端，在所述光伏组件内部，电流从所述光伏组件的负端流向所述光伏组件的正端，所述光伏组件的正端和负端均与所述电路板连接。在一实施方式中，所述第一连接器设置在所述 光伏组件的正端和所述电路板之间。在一实施方式中，所述逆变器还包括所述第二连接器，所述第二连接器连接在所述光伏组件的负端和所述电路板之间。所述光伏组件包括至少一块光伏板，所述光伏板与所述电路板连接。在一实施方式中，所述光伏组件包括多块串联连接的所述光伏板，通过串联的连接方式，将多块所述光伏板的直流电汇集后通过所述第一连接器与所述电路板中的逆变电路连接。
在一实施方式中，所述第一连接器也可以设置在所述光伏组件的负端和所述电路板之间。在一实施方式中，所述逆变器包括两个所述第一连接器，其中一个所述第一连接器用于与所述电路板的正端连接，另一个所述第一连接器用于与所述电路板的负端连接，即在所述光伏组件的正端和所述电路板之间、所述光伏组件的负端和所述电路板之间均设有所述第一连接器，所述光伏组件与所述第一连接器之间可通过线缆电连接。
本申请中，通过将第一连接器中第一连接片设置为扁平结构，第一连接片直接与电路板连接，一方面，使第一连接器与电路板的连接更为便捷，使逆变器的安装更加简单、高效；另一方面，第一连接器与电路板的无线缆连接，减小第一连接器与电路板的接触电阻及发热，提升了逆变器的工作效率，同时，在加工、运输、装配过程中可减小第一连接器与电路板接触不良的影响，降低第一连接器与电路板长期连接而引起的发热超标甚至起火的风险；再一方面，第一连接片与电路板的距离缩短，节约第一连接片与电路板连接处的空间，提升了逆变器的空间利用率和功率密度，有效减短了光伏输入路径长度且减小环境对光伏输入的干扰。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对本申请实施例中所需要使用的附图进行说明。
图1是本申请一实施方式提供的光伏系统的结构示意图；
图2是本申请一实施方式提供的逆变器的结构示意图；
图3是本申请一实施方式提供的第一导电芯的结构示意图；
图4是本申请一实施方式提供的第一导电芯的结构示意图；
图5是本申请一实施方式提供的第一导电芯的结构示意图；
图6是本申请一实施方式提供的第一导电芯的结构示意图；
图7是本申请一实施方式提供的第一导电芯的结构示意图；
图8是本申请一实施方式提供的第一导电芯的结构示意图；
图9是本申请一实施方式提供的第一导电芯的结构示意图；
图10是本申请一实施方式提供的逆变器的局部结构示意图；
图11是本申请一实施方式提供的逆变器的局部结构示意图；
图12是本申请一实施方式提供的逆变器的局部结构示意图；
图13是本申请一实施方式提供的第一导电芯的结构示意图；
图14是本申请一实施方式提供的第一导电芯的结构示意图；
图15是本申请一实施方式提供的第一导电芯的结构示意图；
图16是本申请一实施方式提供的第一导电芯的结构示意图；
图17是本申请一实施方式提供的逆变器的局部结构示意图；
图18是本申请一实施方式提供的逆变器的局部结构示意图；
图19是本申请一实施方式提供的逆变器的局部结构示意图；
图20是本申请一实施方式提供的逆变器的结构示意图；
图21是本申请一实施方式提供的逆变器的爆炸图；
图22是本申请一实施方式提供的第一连接器和第三连接器的结构示意图；
图23是本申请一实施方式提供的第二连接器和第四连接器的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。
本文中，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
此外，本文中，“上”、“下”等方位术语是相对于附图中的结构示意置放的方位来定义的，应当理解到，这些方向性术语是相对的概念，它们用于相对于的描述和澄清，其可以根据结构所放置的方位的变化而相应地发生变化。
为方便理解，下面先对本申请实施例所涉及的英文简写和有关技术术语进行解释和描述。
逆变器：是把直流电转变成定频定压或调频调压交流电的转换器，在本实施方式中，逆变器的功能是把太阳能电池板(也称作光伏板)发出的直流电转换为交流电。
MC4连接器：MC为Multi-Contact的缩写，4则是金属芯直径的尺寸，Multi-Contact为一瑞士公司，MC4连接器用于光伏组件、汇流箱和逆变器等光伏发电的重要部件的连接。
请参阅图1，图1为本申请一实施方式提供的一种光伏系统1的示意图，光伏系统1包括逆变器10和光伏组件20，逆变器10包括外壳100和第一连接器200，外壳100内侧具有电路板110，电路板110中设有逆变电路(图1中未示出)，光伏组件20与第一连接器200远离电路板110的一端电连接。其中，电路板110可为一整块，或者包括多个电路子板，多个电路子板拼接为电路板110，每个电路子板的功能可根据需要来设置，第一连接器200可与其中一个电路子板连接。
其中，逆变电路用于将光伏组件20的直流电进行逆变处理后输出为交流电，电路板110中还可设有滤波电路和测量电路，光伏组件20的直流电经过滤波电路和测量电路进行滤波、测量处理后，通过逆变电路输出为交流电。光伏组件20包括正端和负端，在光伏组件20内部，电流从光伏组件20的负端流向光伏组件20的正端，光伏组件20的正端和负端均与电路板110连接。在一实施方式中，第一连接器200设置在光伏组件20的正端和电路板110之间。在一实施方式中，逆变器10还包括第二连接器400，第二连接器400连接在光伏组件20的负端和电路板110之间。
在一实施方式中，第一连接器200也可以设置在光伏组件20的负端和电路板110之间。在一实施方式中，逆变器10包括两个第一连接器200，其中一个第一连接器200用于与电路板110的正端连接，另一个第一连接器200用于与电路板110的负端连接，即在光伏组件20的正端和电路板110之间、光伏组件20的负端和电路板110之间均设有第一连接器200。其中光伏组件20与第一连接器200之间可通过线缆电连接。
其中，光伏组件20包括至少一块光伏板21，光伏板21与电路板110连接。在一实施方式中，光伏组件20包括多块串联连接的光伏板21，通过串联的连接方式，将多块光伏板21 的直流电汇集后通过第一连接器200与电路板110中的逆变电路连接。
请参阅图2和图3，图2为本申请一实施方式中逆变器10的示意图，图3为图2中逆变器10的剖视图，其中，逆变器10包括外壳100和第一连接器200，外壳100内侧具有电路板110，电路板110中设有逆变电路(图中未示出)；第一连接器200包括第一壳体210和第一导电芯220，第一壳体210固定在外壳100上，第一导电芯220位于第一壳体210内并伸入外壳100内侧，第一导电芯220包括位于外壳100内侧的第一连接片221，第一连接片221为扁平结构，第一连接片221固定在电路板110上并与逆变电路电连接，第一导电芯220远离第一连接片221的一端用于连接光伏组件20，第一导电芯220用于将光伏组件20产生的直流电通过第一连接片221传输至逆变电路，逆变电路将直流电转换为交流电，第一连接片221的扁平结构用于提升第一连接片221与电路板110固定时连接稳定性和传输电流稳定性。
其中，第一连接器200中的第一壳体210用于保护第一导电芯220，并用于固定将第一导电芯220固定在外壳100上，第一连接器200中的第一导电芯220用于传输电，将光伏组件20中的直流电传输至电路板110中的逆变电路，以实现直流电转换为交流电。
请参阅图4和图5，图4为第一导电芯220的俯视图，图5为第一导电芯220的侧视图，在本实施方式中，第一导电芯220为直条型，第一导电芯220远离第一连接片221的部分为空心圆柱形。其中，第一连接片221为扁平结构，可增加第一连接片221与电路板的接触面积，便于将第一连接片221固定在电路板110上，且可保证第一连接片221与电路板110之间良好的电连接性，提升连接稳定性和电性传输稳定性。在一实施方式中，第一连接片221焊接在电路板110上，由于第一连接片221为扁平结构，使得第一连接片221与电路板110具有较大的焊接面积，提供焊接稳定性。在一实施方式中，第一连接片221所在平面与电路板110的板面平行，提升第一连接片221与电路板110连接稳定性和可靠性。
在一种可能的实现方式中，第一连接片221和电路板110沿第一方向X层叠设置，第一连接片221沿第一方向X在电路板110上的至少部分正投影位于电路板110上。在本实施方式中，第一连接片221和电路板110沿第一方向X层叠设置，使得第一连接片221在电路板110上的至少部分正投影位于电路板110上，这种设置使得第一连接片221与电路板110在第二方向Y上具有部分交叉，即缩短了第一连接片221与电路板110之间的距离，使得第一连接片221与电路板110在第二方向Y可直接连接，而无需在第二方向Y上，在电路板110和第一连接片221之间设置线缆。并且第一连接片221与电路板110之间的距离缩短，可使得从第一连接片221输出的电流直接输入至电路板110，有效减短了逆变器10的电流输入路径长度且减小环境对逆变器10的电流输入的干扰。
其中第一方向X与第二方向Y相交，在本实施方式中，第一方向X为逆变器10的厚度方向，第二方向Y为逆变器10的宽度方向，第一方向X与第二方向Y垂直。
在一实施方式中，第一连接片221在电路板110上的正投影可位于电路板110以外，第一连接片221可通过连接部件与电路板110连接。
在一实施方式中，第一连接片221是由第一导电芯220的一端拉伸形成，可节约制备成本。在一实施方式中，第一导电芯220整体机械加工或者一体注塑形成。
其中，第一壳体210与外壳100通过螺丝、焊接等方式固定连接。请参阅图10，图10为逆变器10中第一连接器200及其周围部分的布局放大图，在本实施方式中，第一壳体210延伸至外壳100内侧，通过螺母120将第一壳体210与外壳100固定连接。第一壳体210将第一导电芯220位于外壳100外侧的部分包裹，第一导电芯220通过与第一壳体210固定进而固定在外壳100上。
其中，市场现有的MC4或仿MC4型连接器包括可拆卸连接的公连接部件和母连接部件，公连接部件远离母连接部件的一端与电路板110连接，母连接部件远离公连接部件的一端与光伏组件20连接；或母连接部件远离公连接部件的一端与电路板110连接，公连接部件远离母连接部件的一端与光伏组件20连接。在一实施方式中，对市场上现有的公连接部件或母连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成第一连接器200。
在现有技术中，MC4或仿MC4型连接器通过线缆直接与电路板110连接，由于逆变器10内部空间有限，导致线缆折弯半径不达标，且逆变器10内部线缆凌乱，导致逆变器10的安装困难、安装效率低下，且导致连接不良的问题；尤其是光伏系统1具有多个光伏组件20时，当逆变器10与多个光伏组件20的多个MC4或仿MC4型连接器连接时，逆变器10内部需要更多的线缆连接MC4或仿MC4型连接器和电路板110，使得逆变器10内部线缆更加凌乱，导致逆变器10的安装更加困难；并且，线缆的两端均需要OT端子来分别与电路板和MC4型连接器连接，使得整个回路的接触电阻及发热高，整机效率下降。
而在本申请中，通过将第一连接器200中第一连接片221设置为扁平结构，第一连接片221可直接与电路板110连接，一方面，使第一连接器200与电路板110的连接更为便捷，使逆变器10的安装更加简单、高效；另一方面，第一连接器200与电路板110的无线缆连接，减小第一连接器200与电路板110的接触电阻及发热，提升了逆变器10的工作效率，同时，在加工、运输、装配过程中可减小第一连接器200与电路板110接触不良的影响，降低第一连接器200与电路板110长期连接而引起的发热超标甚至起火的风险；再一方面，第一连接片221与电路板110的距离缩短，节约第一连接片221与电路板110连接处的空间，提升了逆变器10的空间利用率和功率密度，有效减短了光伏输入路径长度且减小环境对光伏输入的干扰。
请结合图4和图10，在一种可能的实现方式中，第一连接片221上设有开口222(如图4所示)，逆变器10还包括固定件111(如图10所示)，固定件111穿过开口222并与电路板110固定，以将第一连接片221与电路板110固定连接。通过开口222的设置，使第一连接片221与电路板110的连接更为简单、便捷。
在一实施方式中，开口222的形状可以为圆孔(如图4所示)、椭圆孔(如图6所示)、方形孔(如图7所示)、U形缺口(如图8和图9所示)或其他任意适配的形状。在一实施方式中，固定件111可以为螺钉、卡扣等。
请参阅图11，在一实施方式中，开口222的形状为圆孔，固定件111为配套的螺栓1111和螺母1112，电路板110上设有贯穿电路板110的开孔112，螺栓1111依次穿过开口222、开孔112和螺母1112，以将第一连接片221固定在电路板110上。
在一种可能的实现方式中，电路板110上设有连接端子113(如图10所示)，第一连接片221、连接端子113和电路板110依次层叠设置，连接端子113连接第一连接片221和电路板110。第一连接片221、连接端子113和电路板110沿第一方向X层叠设置，第一方向X与电路板110垂直，连接端子113固定在电路板110上并与电路板110电连接，连接端子113设有孔道1131，第一连接片221上设有开口222，逆变器10还包括固定件111，固定件111沿第一方向X穿过开口222并伸入孔道1131内，将第一连接片221固定在连接端子113上。通过连接端子113的设置，使第一连接片221与电路板110的连接更为简单、便捷。在一实施方式中，孔道1131内设有螺纹，固定件111为螺钉，螺钉与螺纹相互配合，可以使第一连接片221与连接端子113的固定更加可靠。
在一实施方式中，电路板110上设有插座114(如图12所示)，插座114与电路板110电连接，第一连接片221插入插座114内且与插座114电连接，进而第一连接片221与电路板110电连接。其中插座114的内部结构不限于图12所示的结构，只要当第一连接片221插入插座114中，能够使得第一连接片221与插座114固定并与插座114电连接即可。
请继续参阅图4，在一种可能的实现方式中，第一导电芯220包括第一导电芯本体223和第一连接片221，第一导电芯本体223穿过外壳100的外侧和内侧，第一连接片221位于第一导电芯本体223的一端，第一连接片221的延伸方向与第一导电芯本体223的延伸方向相同。第一导电芯本体223的延伸方向为第二方向Y，第二方向Y与第一方向X相交，在本实施方式中，第二方向Y与第一方向X垂直相交。第一导电芯220呈直线型，便于加工。
请参阅图13，在一种可能的实现方式中，第一导电芯220包括第一导电芯本体223和第一连接片221，第一导电芯本体223穿过外壳100的外侧和内侧，第一连接片221位于第一导电芯本体223的一端，第一连接片221的延伸方向与第一导电芯本体223的延伸方向相交。在一实施方式中，第一连接片221为直线型，第一连接片221与第一导电芯本体223的夹角大于0°且小于180°，可使第一连接器200适应不同的安装环境。在一实施方式中，第一连接片221为弧形。
请参阅图14和图15，在一种可能的实现方式中，第一导电芯220还包括第一连接段224，第一连接段224位于第一导电芯本体223和第一连接片221之间，第一连接段224的延伸方向与第一导电芯本体223、第一连接片221的延伸方向均相交。第一连接段224与第一导电芯本体223的夹角大于0°且小于180°，第一连接段224与第一连接片221的夹角大于0°且小于180°。第一导电芯220呈“Z”字形，可使第一连接器200适应不同的安装环境。
在一实施方式中，第一导电芯220(a)呈“Z”字形(如图16所示)，第一导电芯220(b)呈直线型，第一导电芯220(a)和第一导电芯220(b)错开排布，可节省逆变器10的空间。
请继续参阅图14，在一种可能的实现方式中，第一连接器200还包括绝缘部230，绝缘部230覆盖在第一连接段224的外表面。第一连接段224虽然可提升第一导电芯220的安装灵活性，但同样增长了第一导电芯220的长度，在一些情况下当导电零件掉落在第一连接段224上时会发生短路的风险，通过绝缘部230将第一连接段224与外部环境绝缘隔离，降低第一连接段224发生短路的风险，提高第一连接器200的安全性。
在一种可能的实现方式中，第一导电芯本体223与第一连接片221为一体化结构。一体化结构的强度更高，增强第一导电芯本体223与第一连接片221的连接强度，使第一连接器200的使用寿命增长。
在一种可能的实现方式中，逆变器10还包括温度传感器300(如图10所示)，温度传感器300位于电路板110上，且位于第一连接片221的周侧。温度传感器可为热敏电阻、热电偶等，用于监测第一连接片221的温度，防止由于安装不到位造成接触不良导致逆变器10发热甚至起火问题。在一实施方式中，温度传感器300位于第一连接片221与连接端子113连接的位置的周侧。
请结合图2和图17，图17为第二连接器400安装在外壳100上的结构示意图，在一种可能的实现方式中，逆变器10还包括第二连接器400，第二连接器400包括第二壳体410和第二导电芯420，第二壳体410固定在外壳100外侧，第二导电芯420位于第二壳体410内并伸入外壳100内侧，第二导电芯420包括位于外壳100内侧的第二连接片421，第二连接片421为扁平结构，第二连接片421固定在电路板110上并与逆变电路的负端电连接，且第 二连接片421在电路板110上的至少部分正投影位于电路板110上，第一连接片221与逆变电路的正端电连接。
请结合图1，逆变电路的负端是指逆变电路与光伏组件20的负端连接的一端，逆变电路的正端是指逆变电路与光伏组件20的正端连接的一端，逆变电路与光伏组件20形成回路，电流从光伏组件20的正端流向逆变电路的正端，第一连接器200位于光伏组件20的正端和电路板110逆变电路的正端之间，第二连接器400位于光伏组件20的负端和电路板110逆变电路的负端之间。在一实施方式中，对市场上现有的公连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成第一连接器200；对市场上现有的母连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成第二连接器400。在一实施方式中，对市场上现有的母连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成第一连接器200；对市场上现有的公连接部件的导电芯的一端进行冲压、卷制等加工使导电芯的一端为扁平结构，以制成第二连接器400。在市场现有的公连接部件和母连接部件的基础上直接、简单加工制得第一连接器200和第二连接器400，使第一连接器200和第二连接器400的制造工艺更为简便、节约生产成本。
在一实施方式中，第二连接片421上设有开口422，逆变器10还包括固定件111(如图18所示)，固定件111穿过开口422并与电路板110固定，以将第二连接片421与电路板110固定连接。通过开口422的设置，使第二连接片421与电路板110的连接更为简单、便捷。
在一种可能的实现方式中，第一连接片221在电路板110上的正投影与第二连接片421在电路板110上的正投影不重叠(如图2所示)。第一连接片221和第二连接片421错开分布，一方面有利于第一连接器和第二连接器安装在电路板110上，另一方面，可节约电路板110上的安装空间，尽可能密集地分布多个连接器。
在一实施方式中，第一连接片221和第二连接片421位于电路板110沿第一方向X的同一侧(如图2所示)。
在一实施方式中，第一连接片221和第二连接片421分别位于电路板110沿第一方向X的两侧(如图19所示)。在一实施方式中，第一连接片221和第二连接片421位于电路板110沿第一方向X的两侧，且第一连接片221在电路板110上的正投影与第二连接片421在电路板110上的正投影至少部分重叠。
请参阅图20和图21，图20为本申请另一实施方式提供的逆变器的示意图，图21是图20中逆变器的爆炸图，在一种可能的实现方式中，逆变器10内还包括固定座500(如图21所示)，固定座500位于电路板110上，固定座500内设有固定凹槽510，固定凹槽510内具有连接件511，连接件511的一端与电路板110连接，连接件511的另一端与第二连接片421固定且电连接。固定座500位于外壳100的内侧，且固定座500位于电路板110靠近第一连接器200的一侧，在本实施方式中，第一连接器200直接与固定座500电连接，第二连接器400通过连接件511与固定座500电连接。通过固定座500的设置，一方面使多个第一连接器200和多个第二连接器400固定在一起，提高多个第一连接器200和多个第二连接器400与电路板110的连接稳定性；另一方面，通过固定座500对线路合理规划排布线路，更有利于逆变器10的安装与线路连接。通过连接件511的设置，使第二连接器400在第一方向X上较第一连接器200远离电路板110设置，第二连接器400与第一连接器200位置错开分布，有利于节约电路板110上的安装空间，尽可能密集地分布多个第二连接器400和第一连接器200。
在一实施方式中，固定座500沿第一方向X的高度大于连接端子113沿第一方向X的高 度。在一实施方式中，第二连接器400直接与固定座500电连接，第一连接器200通过连接件511与固定座500电连接。固定座500沿第一方向X的高度大于连接端子113沿第一方向X的高度，使得第一连接器200和第二连接器400在第一方向X上错开设置，有利于节约电路板110上的安装空间。
在一实施方式中，部分第一连接器200直接与固定座500电连接，另一部分第一连接器200通过连接件511与固定座500电连接；部分第二连接器400直接与固定座500电连接，另一部分第二连接器400通过连接件511与固定座500电连接。
在一种可能的实现方式中，逆变器10还包括第三连接器600(如图22所示)，第三连接器600位于第一连接器200远离逆变器10的一端，第三连接器600包括第三壳体610和第三导电芯620，第三壳体610与第一壳体210固定，第三导电芯620与第一导电芯220电连接。其中，第三导电芯620位于第三壳体610内并朝向远离第一连接器200的方向延伸至第三壳体610外，第三导电芯620和第一导电芯220电连接于第三壳体610或第一壳体210内部，第三导电芯620位于第三壳体610外的部分通过电缆线与光伏组件20连接。通过第三连接器600和第一连接器200可拆卸连接的设计，便于光伏组件20和逆变器10之间的组装和拆卸。
在一种可能的实现方式中，逆变器10还包括第四连接器700(如图23所示)，第四连接器700位于第二连接器400远离逆变器10的一端，第四连接器700包括第四壳体710和第四导电芯720，第四壳体710与第二壳体410固定，第四导电芯720与第二导电芯420电连接。其中，第四导电芯720位于第四壳体710内并朝向远离第二连接器400的方向延伸至第四壳体710外，第四导电芯720和第二导电芯420电连接于第四壳体710或第二壳体410内部，第四导电芯720位于第四壳体710外的部分通过电缆线与光伏组件20连接。通过第四连接器700和第二连接器400可拆卸连接的设计，便于光伏系统1的组装和拆卸。
请继续参阅图12，本申请还提供一种逆变器10，包括外壳100、第一连接器200和插座114，外壳100内侧具有电路板110，电路板110中设有逆变电路；第一连接器200包括第一壳体210和第一导电芯220，第一壳体210固定在外壳100上，第一导电芯220位于第一壳体210内并伸入外壳100内侧；插座114位于电路板110上并与电路板110电连接，第一导电芯220位于外壳100内侧的一端插入插座114中并与插座114固定连接，用于缩短第一导电芯220和电路板110之间的距离。第一导电芯220远离第一连接片221的一端用于连接光伏组件20，第一导电芯220用于将光伏组件20产生的直流电通过第一连接片221传输至逆变电路，逆变电路将直流电转换为交流电。
在一实施方式中，第一导电芯220与插座114连接的一端的形状与插座114适配。在图12中，第一导电芯220与插座114连接的一端为扁平结构，在其他实施方式中，第一导电芯220与插座114连接的一端为圆柱形、圆环形、立体柱形等，插座114的内部结构与第一导电芯220的形状适配，以使得第一导电芯220与插座114之间电连接。
以上对本申请实施例所提供的逆变器及光伏系统进行了详细介绍，本文中应用了具体个例对本申请的原理及实施例进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施例及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (16)

  1. 一种逆变器，其特征在于，包括：
    外壳，所述外壳内侧具有电路板，所述电路板中设有逆变电路；
    第一连接器，包括第一壳体和第一导电芯，所述第一壳体固定在所述外壳上，所述第一导电芯位于所述第一壳体内并伸入所述外壳内侧，所述第一导电芯包括位于所述外壳内侧的第一连接片，所述第一连接片为扁平结构，所述第一连接片固定在所述电路板上并与所述逆变电路电连接，所述第一导电芯远离所述第一连接片的一端用于连接光伏组件，所述第一导电芯用于将所述光伏组件产生的直流电通过所述第一连接片传输至所述逆变电路，所述逆变电路将所述直流电转换为交流电，所述扁平结构用于提升所述第一连接片与所述电路板固定时连接稳定性和传输电流稳定性。
  2. 根据权利要求1所述的逆变器，其特征在于，所述第一连接片和所述电路板沿第一方向层叠设置，所述第一连接片沿所述第一方向在所述电路板上的至少部分投影位于所述电路板上，所述第一连接片与所述电路板在第二方向上具有部分交叉，以用于缩短了所述第一连接片与所述电路板之间沿所述第二方向上的距离，所述第一方向与所述第二方向垂直。
  3. 根据权利要求1所述的逆变器，其特征在于，所述第一连接片上设有开口，所述逆变器还包括固定件，所述固定件穿过所述开口并与所述电路板固定，以将所述第一连接片与所述电路板固定连接。
  4. 根据权利要求1所述的逆变器，其特征在于，所述电路板上设有连接端子，所述第一连接片、所述连接端子和所述电路板沿第一方向依次层叠设置，所述第一方向与所述电路板垂直，所述连接端子固定在所述电路板上并与所述电路板电连接，所述连接端子设有孔道，所述第一连接片上设有开口，所述逆变器还包括固定件，所述固定件沿所述第一方向穿过所述开口并伸入所述孔道内，将所述第一连接片固定在所述连接端子上。
  5. 根据权利要求1所述的逆变器，其特征在于，所述第一导电芯包括第一导电芯本体和所述第一连接片，所述第一导电芯本体穿过所述外壳的外侧和内侧，所述第一连接片位于所述第一导电芯本体的一端，所述第一连接片的延伸方向与所述第一导电芯本体的延伸方向相同，以便于所述第一导电芯的加工。
  6. 根据权利要求1所述的逆变器，其特征在于，所述第一导电芯包括第一导电芯本体和所述第一连接片，所述第一导电芯本体穿过所述外壳的外侧和内侧，所述第一连接片位于所述第一导电芯本体的一端，所述第一连接片的延伸方向与所述第一导电芯本体的延伸方向相交，以使所述第一导电芯能够适应多种安装环境。
  7. 根据权利要求5或6所述的逆变器，其特征在于，所述第一导电芯还包括第一连接段，所述第一连接段位于所述第一导电芯本体和所述第一连接片之间，所述第一连接段的延伸方向与所述第一导电芯本体、所述第一连接片的延伸方向均相交，以使所述第一导电芯能够适应多种安装环境。
  8. 根据权利要求7所述的逆变器，其特征在于，所述第一连接器还包括绝缘部，所述绝缘部覆盖在所述第一连接段的外表面，以用于将所述第一连接段与外部环境绝缘隔离，降低所述第一连接段发生短路的风险。
  9. 根据权利要求5或6所述的逆变器，其特征在于，所述第一导电芯本体与所述第一连接片为一体化结构，增强所述第一导电芯本体与所述第一连接片的连接强度，使所述第一连接器的使用寿命增长。
  10. 根据权利要求1所述的逆变器，其特征在于，所述逆变器还包括温度传感器，所述温 度传感器位于所述电路板上，且位于所述第一连接片的周侧，所述温度传感器用于监测所述第一连接片的温度。
  11. 根据权利要求1所述的逆变器，其特征在于，所述逆变器还包括第二连接器，所述第二连接器包括第二壳体和第二导电芯，所述第二壳体固定在所述外壳外侧，所述第二导电芯位于所述第二壳体内并伸入所述外壳内侧，所述第二导电芯包括位于所述外壳内侧的第二连接片，所述第二连接片为扁平结构，所述第二连接片固定在所述电路板上并与所述逆变电路的负端电连接，且所述第二连接片在所述电路板上的至少部分正投影位于所述电路板上，所述第一连接片与所述逆变电路的正端电连接。
  12. 根据权利要求11所述的逆变器，其特征在于，所述第一连接片在所述电路板上的正投影与所述第二连接片在所述电路板上的正投影不重叠，以使所述第一连接片和所述第二连接片错开分布。
  13. 根据权利要求11所述的逆变器，其特征在于，所述逆变器内还包括固定座，所述固定座位于所述电路板上，所述固定座内设有固定凹槽，所述固定凹槽内具有连接件，所述连接件的一端与所述电路板连接，所述连接件的另一端与所述第二连接片固定且电连接，所述固定座用于提高多个所述第一连接器和多个所述第二连接器与所述电路板的连接稳定性且有利于所述逆变器的安装与线路连接。
  14. 根据权利要求1所述的逆变器，其特征在于，所述逆变器还包括第三连接器，所述第三连接器位于所述第一连接器远离所述逆变器的一端，所述第三连接器包括第三壳体和第三导电芯，所述第三壳体与所述第一壳体固定，所述第三导电芯与所述第一导电芯电连接，所述第三连接器与所述第一连接器为可拆卸连接，便于所述逆变器的组装和拆卸。
  15. 一种逆变器，其特征在于，包括：
    外壳，所述外壳内侧具有电路板，所述电路板中设有逆变电路；
    第一连接器，包括第一壳体和第一导电芯，所述第一壳体固定在所述外壳上，所述第一导电芯位于所述第一壳体内并伸入所述外壳内侧；
    插座，位于所述电路板上并与所述电路板电连接，所述第一导电芯位于所述外壳内侧的一端插入所述插座中并与所述插座固定连接，所述插座将所述第一导电芯和所述电路板连接，用于缩短所述第一导电芯和所述电路板之间的距离；
    所述第一导电芯远离所述第一连接片的一端用于连接光伏组件，所述第一导电芯用于将所述光伏组件产生的直流电通过所述第一连接片传输至所述逆变电路，所述逆变电路将所述直流电转换为交流电。
  16. 一种光伏系统，其特征在于，包括光伏组件和如权利要求1-15任一项所述的逆变器，所述光伏组件与所述第一连接器远离所述电路板的一端电连接，所述光伏组件产生的直流电通过所述第一连接片传输至所述逆变电路。
PCT/CN2023/075867 2022-02-15 2023-02-14 逆变器及光伏系统 Ceased WO2023155771A1 (zh)

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Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
CN217691716U (zh) * 2022-02-15 2022-10-28 华为数字能源技术有限公司 逆变器及光伏系统
CN118842427A (zh) * 2022-11-30 2024-10-25 华为数字能源技术有限公司 一种光伏逆变器以及温度检测装置
CN116470778A (zh) * 2023-03-14 2023-07-21 固德威技术股份有限公司 一种光伏逆变器及其安装方法
CN117220521A (zh) * 2023-04-27 2023-12-12 华为数字能源技术有限公司 光伏逆变器和光伏系统
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2365783Y (zh) * 1999-01-15 2000-02-23 富士康(昆山)电脑接插件有限公司 层叠式电连接器
CH705665A1 (de) * 2011-10-25 2013-04-30 Eme Ag Steckeranordnung und Wechselrichterschaltkasten für eine Fotovoltaikanlage und Verfahren zum mechanischen Trennen der Fotovoltaikanlage vom Wechselrichterschaltkasten.
CN107819259A (zh) * 2016-09-14 2018-03-20 泰科电子(上海)有限公司 连接器组件
CN207460023U (zh) * 2017-12-08 2018-06-05 黑龙江恒讯科技有限公司 一种基于pon技术的poe光伏逆变器
CN211320367U (zh) * 2019-12-20 2020-08-21 宁波奥克斯电气股份有限公司 一种接线端子及空调器
CN212323249U (zh) * 2020-07-03 2021-01-08 常州索维尔电子科技有限公司 Pcb板间转接插座装置
CN217691716U (zh) * 2022-02-15 2022-10-28 华为数字能源技术有限公司 逆变器及光伏系统

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166983U (zh) * 1988-05-17 1989-11-22
JP5711542B2 (ja) * 2011-01-13 2015-05-07 矢崎総業株式会社 基板接続用端子および回路基板の保持構造
JP2013145707A (ja) * 2012-01-16 2013-07-25 Honda Tsushin Kogyo Co Ltd 太陽光発電システム用コネクタ構造
JP2016096637A (ja) * 2014-11-13 2016-05-26 住友電装株式会社 バスバー回路体およびその製造方法
JP6476912B2 (ja) * 2015-01-26 2019-03-06 株式会社ノーリツ パワーコンディショナ
JP6094772B2 (ja) * 2015-06-05 2017-03-15 株式会社安川電機 電力変換装置、電力変換装置の製造方法、電気機器
JP6451589B2 (ja) * 2015-10-20 2019-01-16 株式会社豊田自動織機 電力変換装置
JP2017079547A (ja) * 2015-10-20 2017-04-27 株式会社豊田自動織機 電力変換装置
JP6591382B2 (ja) * 2016-10-26 2019-10-16 日立オートモティブシステムズ株式会社 電力変換装置
US11670881B2 (en) * 2019-11-01 2023-06-06 University Of Maryland, College Park Low-cost connectors for inverters and converters and methods of manufacturing and using the same
CN112003051A (zh) * 2020-07-13 2020-11-27 华为技术有限公司 一种连接器和电子设备

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2365783Y (zh) * 1999-01-15 2000-02-23 富士康(昆山)电脑接插件有限公司 层叠式电连接器
CH705665A1 (de) * 2011-10-25 2013-04-30 Eme Ag Steckeranordnung und Wechselrichterschaltkasten für eine Fotovoltaikanlage und Verfahren zum mechanischen Trennen der Fotovoltaikanlage vom Wechselrichterschaltkasten.
CN107819259A (zh) * 2016-09-14 2018-03-20 泰科电子(上海)有限公司 连接器组件
CN207460023U (zh) * 2017-12-08 2018-06-05 黑龙江恒讯科技有限公司 一种基于pon技术的poe光伏逆变器
CN211320367U (zh) * 2019-12-20 2020-08-21 宁波奥克斯电气股份有限公司 一种接线端子及空调器
CN212323249U (zh) * 2020-07-03 2021-01-08 常州索维尔电子科技有限公司 Pcb板间转接插座装置
CN217691716U (zh) * 2022-02-15 2022-10-28 华为数字能源技术有限公司 逆变器及光伏系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4465452A4

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