Connector, connector system and photovoltaic system

Abstract

The utility model provides a connector, a connector system and a photovoltaic system, and relates to the field of photovoltaic technology, the connector comprises a wiring terminal, a plurality of wiring pieces are arranged in the wiring terminal, each wiring piece is provided with a load end and a photovoltaic end, the load ends are configured to be used for connecting a plurality of core wires of a load end cable, and the photovoltaic ends are configured to be used for connecting a plurality of core wires of the load end cable. The photovoltaic terminal is configured to be electrically connected with the power converter directly or indirectly. In the connection process, the photovoltaic end can be directly inserted into a plug, a large amount of wire stripping treatment is not needed, connection is faster, the connector is smaller in size and lighter in weight, the self structure can achieve a high protection level more easily, the whole connector can be arranged below a photovoltaic panel, exposure is avoided, sun protection, dust prevention and water prevention are facilitated, and the connector is suitable for popularization and application. Especially in the scene of a household roof, the protection advantage of the connector is more obvious. In addition, the number of the wiring pieces is matched with the number of the core wires and is not limited by specifications, and the wiring efficiency and the adaptability to different scenes are improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to connectors, connector systems, and photovoltaic systems. Background Technology

[0002] Power converters are electrical conversion devices used to transform electrical energy from one form to another, enabling energy transmission and control under different power requirements. For example, they convert direct current (DC) generated by solar panels into alternating current (AC). Typically connected to one or more solar panels, they are installed on or near the back of the panels, providing power conversion and control functions for each panel or group of panels. In rooftop solar power projects such as residential buildings, commercial buildings, and industrial plants, power converters can provide optimized power conversion for each solar panel, facilitating the installation and management of solar power plants.

[0003] In practical applications, multiple power converters need to be connected to one place for centralized management and control, and then connected to the power grid or loads within the grid.

[0004] Currently, most manufacturers complete the connection by stripping wires in the junction box, which is cumbersome, inconvenient, and inefficient. Alternatively, they connect by plugging in terminals at both ends, which is more expensive and complicated to operate. Utility Model Content

[0005] Therefore, it is necessary to provide a connector, a connector system, and a photovoltaic system to address the aforementioned technical problems.

[0006] This application provides a connector, the connector comprising:

[0007] The terminal block has several connectors inside, each connector having a load end and a photovoltaic end. The load end is configured to connect several core wires to a load end cable, and the photovoltaic end is configured to be electrically connected directly or indirectly to a power converter.

[0008] In one embodiment, the terminal block has a terminal chamber inside, and a plurality of the terminal pieces are disposed in the terminal chamber; and / or,

[0009] The photovoltaic terminals of several of the aforementioned connectors are configured for connection to a power converter via photovoltaic terminal cables; and / or,

[0010] The terminal block internally provides at least two of the aforementioned connectors. The load-side cable has several core wires, including a load-side L-wire, a load-side N-wire, and a load-side ground wire. The load ends of the aforementioned connectors are configured to be electrically connected to at least the load-side L-wire and the load-side N-wire; and / or,

[0011] The terminal block has a male plug, and a plurality of the photovoltaic terminals of the terminal blocks are disposed on the male plug, which is configured to be plugged into the female plug of the photovoltaic terminal cable or the power converter.

[0012] In one embodiment, the terminal block is provided with a ground interface, which is configured to connect the photovoltaic terminal ground wire and the load terminal ground wire of the load terminal cable; and / or,

[0013] The photovoltaic terminal cable has several core wires, including a photovoltaic terminal L wire and a photovoltaic terminal N wire, or a photovoltaic terminal L wire, a photovoltaic terminal N wire and a photovoltaic terminal ground wire; wherein, at least two of the terminal blocks are provided inside the terminal block, and the photovoltaic terminals of the terminal blocks are configured to be electrically connected to at least the photovoltaic terminal L wire and the photovoltaic terminal N wire.

[0014] In one embodiment, the connector includes a conductive core;

[0015] The conductive core is disposed at the ground wire interface of the terminal block, and the conductive core is configured to electrically connect the photovoltaic terminal ground wire and the load terminal ground wire of the load terminal cable.

[0016] Alternatively, the conductive core is disposed at the ground interface of the terminal block, and the conductive core has at least one internal channel configured to pass through at least one of the load end ground wire and the photovoltaic end ground wire, thereby electrically connecting the photovoltaic end ground wire and the load end ground wire of the load end cable.

[0017] In one embodiment, the grounding interface includes a grounding chamber located inside the terminal block. The grounding chamber has a first grounding cavity opening and a second grounding cavity opening that pass through the terminal block. The conductive core is disposed in the grounding chamber. The first grounding cavity opening is configured to carry the load-end grounding wire of the load-end cable, and the second grounding cavity opening is configured to carry the photovoltaic-end grounding wire.

[0018] In one embodiment, the conductive core is sealed to the grounding chamber by at least one seal; and / or,

[0019] The grounding chamber is provided with at least one limiting member, and the conductive core is limited and assembled in the grounding chamber by at least one of the limiting members.

[0020] In one embodiment, the grounding chamber has at least one locking port through the terminal block, the core channel has at least one connecting port through the conductive core, the connecting port being configured to communicate with the locking port, the locking port and the connecting port being configured to accommodate a locking element, the locking element being configured to lock at least one of the load terminal ground wire and the photovoltaic terminal ground wire relative to the conductive core; and / or,

[0021] The sealing element is disposed between the outside of the conductive core and the inner wall of the grounding chamber, and the first grounding cavity opening and the second grounding cavity opening of the grounding chamber are sealed and isolated by the sealing element; and / or,

[0022] At least one limiting member is provided inside the grounding chamber. The limiting member is configured as a limiting buckle. The limiting buckle is located at the first grounding cavity opening or the second grounding cavity opening of the grounding chamber. One end of the conductive core is configured to abut against the inner wall of the grounding chamber, and the other end of the conductive core is configured to engage with the limiting buckle for limiting.

[0023] In one embodiment, the seal is configured as a sealing ring, which is fitted over the conductive core, and the conductive core is sealed to the inner wall of the grounding chamber via the sealing ring; and / or,

[0024] The grounding chamber has a first locking port through the terminal block, the conductive core has a first core channel inside, the first core channel has a first pair of interfaces through the conductive core, the first pair of interfaces is configured to connect with the first locking port, the first locking port and the first pair of interfaces are configured to pass through a locking member, and the locking member is configured to lock the load terminal ground wire relative to the conductive core.

[0025] The grounding chamber has a second locking port that passes through the terminal block. The conductive core has a second internal channel inside. The first internal channel and the second internal channel are two independent internal channels that are not connected. The second internal channel has a second pair of interfaces that pass through the conductive core. The second pair of interfaces is configured to connect with the second locking port. The second locking port and the second pair of interfaces are configured to allow a locking member to pass through. The locking member is configured to lock the photovoltaic ground wire relative to the conductive core.

[0026] In one embodiment, the connector includes:

[0027] The device housing has a housing cavity with two through-holes inside. The device housing is assembled to the outside of the terminal block. At least a portion of the terminal block is located in the housing cavity of the device housing.

[0028] In one embodiment, the device housing is provided with a locking mechanism, the locking mechanism including a deformation cylinder and a locking sleeve, the deformation cylinder being located in the device housing and the cavity of the deformation cylinder communicating with the housing cavity of the device housing, the locking sleeve being movably sleeved on the outside of the deformation cylinder, the locking sleeve being configured to change the radial dimension of at least a portion of the cavity of the deformation cylinder.

[0029] In one embodiment, the deformation cylinder has a plurality of linear slits, each of which extends linearly along the axial direction of the deformation cylinder. The plurality of linear slits are distributed along the circumference of the deformation cylinder. A portion of the deformation cylinder is divided into deformation arms based on adjacent linear slits. The plurality of linear slits form a plurality of deformation arms along the circumference of the deformation cylinder. The plurality of deformation arms are configured to come closer to each other based on the locking force of the locking sleeve, thereby changing the radial dimension of at least a portion of the cavity of the deformation cylinder.

[0030] In one embodiment, a first mounting member is provided on the exterior of the device housing, and the device housing is assembled to the exterior of the wiring terminal via the first mounting member; and / or,

[0031] A second mounting component is provided in the housing cavity of the device housing, and the device housing is assembled with the wiring terminal through the second mounting component.

[0032] In one embodiment, the first mounting component includes a mounting arm and a mounting cover connected to each other. The mounting arm is rotatably mounted on the outside of the device housing. The mounting cover is provided with a snap-fit ​​groove. The outside of the terminal block is provided with a snap-fit ​​post. The snap-fit ​​groove of the mounting cover is configured to snap-fit ​​with the snap-fit ​​post of the terminal block. The mounting cover is configured to cover at least a portion of the outer wall area of ​​the terminal block.

[0033] This application provides a connector system, the connector system including the connector, wherein the photovoltaic terminals of a plurality of the connector's terminals are directly or indirectly connected to a power converter, and the load terminals of the plurality of the connector's terminals are connected to a load via load terminal cables.

[0034] In one embodiment, the connector system includes:

[0035] A female plug is provided on at least one of the power converter or photovoltaic terminal cable, and the female plug is configured to be mated with the male plug of the connector's wiring terminal.

[0036] This application provides a photovoltaic system, the photovoltaic system comprising:

[0037] At least one of a power converter and a load;

[0038] The connector system is connected to at least one of the power converter and the load.

[0039] Compared to existing wiring methods, the connectors, connector systems, and photovoltaic systems described above offer several advantages. The connector provided in this application allows for direct mating between the photovoltaic end and the plug (located in the photovoltaic inverter and photovoltaic cable) during connection, eliminating the need for extensive wire stripping and resulting in faster connection. Furthermore, the connector in this application is smaller and lighter, making it easier to achieve a higher protection level. It can also be installed entirely under the photovoltaic panel, avoiding exposure and providing sun, dust, and water protection. This protective advantage is particularly pronounced in residential rooftop applications. In addition, the number of connector terminals matches the number of core wires in the connected photovoltaic system or photovoltaic cable, and the terminals are limited to having both load and photovoltaic ends. This allows the connector to quickly and electrically connect several core wires of the photovoltaic system and several core wires of the photovoltaic cable using appropriate terminals, without being limited by specifications, thus improving wiring efficiency and adaptability to different scenarios. Attached Figure Description

[0040] Figure 1 An exploded view of a connector provided in one embodiment of this application.

[0041] Figure 2 For example Figure 1 A three-dimensional view of the wiring terminals shown.

[0042] Figure 3 For example Figure 2 The first sectional view of the terminal block shown.

[0043] Figure 4 For example Figure 2 The diagram shows a cross-sectional view of the terminal block excluding the conductive core.

[0044] Figure 5 For example Figure 2 The diagram shows a cross-sectional view of a terminal block containing a conductive core.

[0045] Figure 6 This is a perspective view of a conductive core and a locking element provided in one embodiment of this application.

[0046] Figure 7 For example Figure 1 The image shown is a first-view perspective perspective view of the device housing.

[0047] Figure 8 For example Figure 1 The second-view perspective perspective of the device housing is shown.

[0048] Figure 9 This is a connection frame diagram of a photovoltaic system provided in one embodiment of this application.

[0049] Icon labels:

[0050] 100. Connector; 200. Load-side cable; 300. Photovoltaic-side cable; 400. Load; 500. Power converter;

[0051] 1000, Terminal blocks; 2000, Device housing;

[0052] 1100, Wiring component; 1200, Grounding connector; 1300, Conductive core; 1400, Sealing component; 1500, Limiting component; 1600, Male connector;

[0053] 1210 Grounding chamber; 1220 Locking port; 1230 Locking element;

[0054] 1310, In-core channel; 1320, Interface;

[0055] 2100 Locking mechanism; 2200 First locking component; 2300 Second locking component;

[0056] 2210, clamping swing arm; 2220, clamping cover plate; 2221, clamping groove; 2222, clamping column. Detailed Implementation

[0057] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0058] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0059] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0061] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0063] See Figure 1 As shown, this application provides a connector 100, which mainly includes a terminal block 1000. In addition, the connector 100 may also include... Figure 1 The device housing 2000 shown allows the terminal block 1000 to be assembled with the device housing 2000. Regarding the terminal block 1000, firstly as... Figure 2 and Figure 3As shown, a plurality of connectors 1100 may be disposed inside the terminal block 1000. For example, in one embodiment, a terminal chamber may be provided inside the terminal block 1000, so that a plurality of connectors 1100 may be disposed in the terminal chamber and thus assembled inside the terminal block 1000. In addition, the plurality of connectors 1100 may also be assembled inside the terminal block 1000 by other components or other structures, which is not limited here.

[0064] It should be noted that the several connectors 1100 inside the aforementioned terminal block 1000 are an integrated conductive structure. When connecting the core wires of cables (e.g., load-end cable 200 or photovoltaic-end cable 300), the core wires are connected to the connectors 1100 by a mating (plugging) method. This plugging method can be based on the structural design of the connectors 1100 or the structural design of the terminal block 1000, rather than the independent terminals in the existing junction box.

[0065] Depending on the number of core wires in the load-side cable 200 or the photovoltaic-side cable 300, the number of connectors 1100 can be adapted to match, without limitation. Therefore, by limiting connector 1100 to have both a load end and a photovoltaic end, the load end can be used to connect several core wires of the load-side cable 200, while the photovoltaic end can be configured for direct or indirect electrical connection to the power converter 500. For example, in the case of indirect connection, several photovoltaic ends of connectors 1100 can be configured for connection to the power converter 500 via the photovoltaic-side cable 300.

[0066] Currently, when setting up junction boxes on construction sites, operators need to strip cables to complete the wiring process. This is cumbersome, inconvenient, and inefficient. For example, a conventional wire stripping and wiring process requires using tools such as wire strippers, utility knives, scissors, or needle-nose pliers to precisely remove the cable's insulation. The core wire can be placed into the appropriate blade of the wire stripper, and the pliers can be gently pressed down to ensure the blade cuts into the insulation without damaging the core wire. The wire stripper can then be rotated or pulled to remove the insulation. Alternatively, a utility knife or scissors can be used to make a circumferential cut around the insulation, avoiding damage to the core wire, and then the insulation can be gently stripped away. Then, the stripping length is determined according to the wiring requirements, and the stripped core wire is clamped in the cable with wire strippers or needle-nose pliers to ensure a secure connection. Proper wire stripping ensures a secure connection and good conductivity.

[0067] Compared to existing wiring methods, the connector 100 provided in this application allows for direct plugging between the photovoltaic end and the plug (located in the photovoltaic inverter and photovoltaic cable) during connection, eliminating the need for extensive wire stripping and resulting in faster connection. Furthermore, the connector in this application is smaller and lighter, making it easier to achieve a higher protection level and allowing it to be installed entirely under the photovoltaic panel, avoiding exposure and providing sun, dust, and water protection. This protective advantage is particularly pronounced in residential rooftop applications. In addition, the number of connector terminals 1100 matches the number of core wires in the connected load-side cable 200 or photovoltaic cable 300, and the terminals 1100 are limited to having both load and photovoltaic ends. These ends can be electrically connected via direct plugging, enabling the connector 100 to quickly and electrically connect several core wires of the load-side cable 200 and the photovoltaic cable 300 using suitable terminals 1100, without being limited by specifications, thus improving wiring efficiency and adaptability to different scenarios.

[0068] Regarding the connection method between the terminal block 1000 and the power converter 500, in the case of direct connection, the power converter 500 may be defined as having a female plug, and the terminal block 1000 may have a male plug 1600. The photovoltaic ends of several connectors 1100 are disposed on the male plug 1600, and the male plug 1600 is configured for mating with the female plug of the power converter 500. Alternatively, in the case of indirect connection, the photovoltaic cable 300 may be defined as having a female plug, and the terminal block 1000 may have a male plug 1600. The photovoltaic ends of several connectors 1100 are disposed on the male plug 1600, and the male plug 1600 is configured for mating with the female plug of the photovoltaic cable 300.

[0069] Regarding the number of connectors 1100 mentioned above, in one embodiment, at least two connectors 1100 may be provided inside the terminal block 1000. In this case, the core wires of the load cable 200 may respectively include the load L wire, the load N wire and the load ground wire. Therefore, the load ends of at least two connectors 1100 may be configured to be electrically connected to at least the load L wire and the load N wire. That is, the load end of one connector 1100 is independently connected to the load L wire, and the load end of one connector 1100 is also independently connected to the load N wire.

[0070] The load-side cable 200 may also include a load-side ground wire. Therefore, regarding the electrical connection of the load-side ground wire, in one embodiment, a ground wire interface 1200 may be provided at the terminal block 1000. In this case, the added ground wire interface 1200 may be configured to connect the photovoltaic terminal ground wire and the load-side ground wire of the load-side cable 200, thereby realizing the electrical connection between the load-side ground wire and the photovoltaic terminal ground wire. It should be noted that the photovoltaic terminal cable 300 may include a photovoltaic terminal L wire and a photovoltaic terminal N wire, i.e., it may not include a photovoltaic terminal ground wire, or the photovoltaic terminal cable 300 may include a photovoltaic terminal L wire, a photovoltaic terminal N wire, and a photovoltaic terminal ground wire, i.e., it may include a photovoltaic terminal ground wire.

[0071] In this state, for the design of the photovoltaic terminal cable 300, the terminal block 1000 can also be equipped with at least two connectors 1100. The photovoltaic terminals of several connectors 1100 are configured to be electrically connected to at least the photovoltaic terminal L line and the photovoltaic terminal N line. That is, the photovoltaic terminal of one connector 1100 is used to independently connect to the photovoltaic terminal L line, and at the same time, the photovoltaic terminal of one connector 1100 is used to independently connect to the photovoltaic terminal N line.

[0072] Regarding the connection of the ground interface 1200 to the photovoltaic terminal ground and the load terminal ground, in one embodiment, the connector 100 includes a conductive core 1300. The conductive core 1300 is disposed at the ground interface 1200 of the terminal 1000. The conductive core 1300 may be made of a conductive material, and therefore, based on its conductivity, the conductive core 1300 can be configured to electrically connect the photovoltaic terminal ground and the load terminal ground of the load cable 200. Alternatively, in one embodiment, the conductive core 1300 is disposed at the ground interface 1200 of the terminal 1000, and the conductive core 1300 may be defined to have at least one internal channel 1310. The internal channel 1310 is configured to pass through at least one of the load terminal ground and the photovoltaic terminal ground, thereby electrically connecting the photovoltaic terminal ground and the load terminal ground of the load cable 200 within the internal channel 1310.

[0073] See Figure 4 As shown, in one embodiment, the grounding interface 1200 includes a grounding chamber 1210 formed inside the terminal block 1000. The grounding chamber 1210 is in a state of being open at both ends, that is, the grounding chamber 1210 has a first grounding cavity opening and a second grounding cavity opening that are open through the terminal block 1000. The conductive core 1300 is disposed in the grounding chamber 1210. At this time, the first grounding cavity opening can be configured for passing through the load end ground wire of the load end cable 200, and the second grounding cavity opening can be configured for passing through the photovoltaic end ground wire. Thus, the load end ground wire and the photovoltaic end ground wire can be electrically connected to the conductive core 1300 in the grounding chamber 1210, thereby realizing the electrical connection between the load end ground wire and the photovoltaic end ground wire.

[0074] Continue reading Figure 5 As shown, in one embodiment, the grounding chamber 1210 may have at least one locking port 1220 through the terminal block 1000, and the internal channel 1310 has at least one interface 1320 through the conductive core 1300, the interface 1320 being configured to connect with the locking port 1220, i.e., as shown. Figure 5 As shown, after the conductive core 1300 is assembled into the grounding chamber 1210, the locking port 1220 can correspond one-to-one with the matching port 1320, thereby forming a connection.

[0075] At this time, the locking port 1220 and the mating port 1320 can be configured to simultaneously insert the locking member 1230. When the locking member 1230 is inserted into the locking port 1220 and the mating port 1320, the locking member 1230 can make contact with at least one of the internal load terminal ground wire and photovoltaic terminal ground wire, so that the locking member 1230 can be configured to lock at least one of the load terminal ground wire and photovoltaic terminal ground wire relative to the conductive core 1300. The end of the locking member 1230 can be provided as an internal hexagonal slot or a cross slot to solve the problems of tool simplicity and universality.

[0076] For example, see Figure 5 and Figure 6 In the specific embodiment shown, the grounding chamber 1210 has a first locking port 1220 that passes through the terminal block 1000, the conductive core 1300 has a first internal channel 1310 inside, the first internal channel 1310 has a first pair of interfaces 1320 that pass through the conductive core 1300, the first pair of interfaces 1320 is configured to connect with the first locking port 1220, the first locking port 1220 and the first pair of interfaces 1320 are configured to pass through a locking member 1230, and the locking member 1230 is configured to lock the load terminal ground wire relative to the conductive core 1300.

[0077] Meanwhile, the grounding chamber 1210 has a second locking port 1220 that passes through the terminal block 1000, and the interior of the conductive core 1300 has a second core channel 1310. The first core channel 1310 and the second core channel 1310 are two independent core channels 1310 that are not connected. The second core channel 1310 has a second pair of interfaces 1320 that pass through the conductive core 1300. The second pair of interfaces 1320 is configured to connect with the second locking port 1220. The second locking port 1220 and the second pair of interfaces 1320 are configured to allow the installation of a locking member 1230. The locking member 1230 is configured to lock the photovoltaic ground wire relative to the conductive core 1300.

[0078] As can be seen from the above, when the first inner core channel 1310 and the second inner core channel 1310 are two independent inner core channels 1310 that are not connected, the load end ground wire and the photovoltaic end ground wire can be respectively passed through the first inner core channel 1310 and the second inner core channel 1310, and then formed an electrical connection based on the conductive core 1300. At this time, the load end ground wire and the photovoltaic end ground wire are located in the independent first inner core channel 1310 and the second inner core channel 1310, respectively, and can form a waterproof isolation at the level of the conductive core 1300, thereby ensuring the sealing and waterproof performance between the load end ground wire and the photovoltaic end ground wire to a certain extent.

[0079] Regarding the sealed assembly between the load-side ground wire and the photovoltaic ground wire, in one embodiment, please refer to [further details]. Figure 5 As shown, the conductive core 1300 can be sealed and assembled into the grounding chamber 1210 by at least one sealing member 1400, thereby achieving a waterproof seal between the load end ground wire and the photovoltaic end ground wire through the sealing member 1400. For example, the sealing member 1400 can be disposed between the outside of the conductive core 1300 and the inner wall of the grounding chamber 1210, thereby isolating the grounding chamber 1210 in segments between the conductive core 1300 and the grounding chamber 1210, so that the first grounding cavity opening and the second grounding cavity opening of the grounding chamber 1210 are sealed and isolated by the sealing member 1400, forming a sealed and isolated waterproof state between the load end and the photovoltaic end.

[0080] The seal 1400 can adopt various structures, such as a sealing ring, sealing putty, or sealing sleeve, and is not limited thereto. In one embodiment, the seal 1400 can be configured as a sealing ring, which is fitted over the conductive core 1300 and located approximately at the center of the conductive core 1300. This allows the conductive core 1300 to seal against the inner wall of the grounding chamber 1210 through the sealing ring, and to waterproofly seal and isolate the first and second grounding chamber openings of the grounding chamber 1210 at approximately the center of the conductive core 1300. The compression dimension of the sealing ring relative to the inner wall of the grounding chamber 1210 can be designed to be 0.5 mm, and the compression dimension of the sealing ring relative to the conductive core 1300 can be designed to be 0.3 mm, with a dimensional tolerance of ±0.1 mm.

[0081] Continue reading Figure 5As shown, at least one limiting member 1500 is provided inside the grounding chamber 1210. The conductive core 1300 is limited and assembled in the grounding chamber 1210 by the limiting member 1500. Based on the limiting function of the limiting member 1500, the conductive core 1300 can be confined within the grounding chamber 1210 after being assembled in the grounding chamber 1210, preventing the conductive core 1300 from detaching or misaligning or moving unexpectedly within the grounding chamber 1210. In one embodiment, at least one limiting member 1500 is provided inside the grounding chamber 1210. The limiting member 1500 is configured as a limiting buckle. The limiting buckle can be located at the first grounding cavity opening or the second grounding cavity opening of the grounding chamber 1210, so that the limiting member 1500 has a buckle limiting and anti-loosening function, realizing a quick assembly function.

[0082] Therefore, when the conductive core 1300 is inserted into the grounding chamber 1210 from the first grounding cavity port or the second grounding cavity port, one end of the conductive core 1300 can be configured to abut against the inner wall of the grounding chamber 1210, while the other end of the conductive core 1300 is configured to engage with the limiting buckle for limiting, so that the conductive core 1300 can be restricted in the grounding chamber 1210 based on the limiting buckle.

[0083] For details regarding the device housing 2000 of connector 100, please refer to [link / reference]. Figure 7 and Figure 8 As shown, in one embodiment, the device housing 2000 may have a housing cavity with two through-ends inside, forming a cavity structure with both ends through-ends. In this case, the device housing 2000 can be assembled to the outside of the terminal 1000, providing protection for the terminal 1000. Moreover, when the device housing 2000 is assembled to the outside of the terminal 1000, a sealed and waterproof structure can be constructed between the device housing 2000 and the terminal 1000 as needed. For example, a sealing ring can be provided between the device housing 2000 and the terminal 1000, so that the device housing 2000 can form a sealed assembly for at least a part of the structure of the terminal 1000 after being assembled to the outside of the terminal 1000, achieving waterproof protection. It is possible to limit the assembly of a part or all of the structure of the terminal 1000 into the housing cavity of the device housing 2000 according to actual needs, and no limitation is made here.

[0084] In one embodiment, the device housing 2000 may be provided with a locking mechanism 2100, which includes a deformation cylinder and a locking sleeve. The deformation cylinder is located in the device housing 2000, and its cavity communicates with the housing cavity of the device housing 2000. The locking sleeve is movably sleeved on the outside of the deformation cylinder and is configured to change the radial dimension of at least a portion of the cavity of the deformation cylinder. Therefore, the radial dimension of at least a portion of the cavity of the deformation cylinder has a certain degree of deformation capability, which allows the radial dimension of at least a portion of the cavity to change, thereby adapting to load-end cables 200 of different diameters when at different radial dimensions.

[0085] For example, in one embodiment, the deformation cylinder has several linear slits, each extending linearly along the axial direction of the deformation cylinder. These linear slits are distributed circumferentially along the deformation cylinder. A portion of the deformation cylinder is divided into deformation arms based on adjacent linear slits, forming several deformation arms along the circumferential direction of the deformation cylinder. Since these deformation arms are independent structures, they can be brought closer together or separated from each other. Therefore, the radial dimension of a portion of the deformation cylinder can be changed based on the mutual approach or separation of these deformation arms.

[0086] At this time, the locking sleeve can be fitted onto the deformation cylinder, and several deformation arms can be configured to move closer to each other based on the locking force of the locking sleeve, thereby reducing the radial dimension of that part of the deformation cylinder, or when the locking sleeve is disengaged from the deformation cylinder, the radial dimension of that part of the deformation cylinder automatically recovers and increases, thereby changing the radial dimension of at least a part of the cavity of the deformation cylinder in this way.

[0087] In addition, part of the deformable cylinder can be made of flexible materials. For example, at least a portion of the deformable cylinder can be made of silicone, making the deformable cylinder a silicone component. Based on the flexible properties of silicone, the radial dimension of the deformable cylinder can be changed, which is not limited here. In some possible implementations, the deformable cylinder can also be provided with an elastic element. The elastic element has a through hole in the middle, through which the load-end cable 200 can pass. When the deformable cylinder deforms, the elastic element undergoes elastic deformation, compressing the load-end cable 200. The entrance of the through hole changes from circular to conform to the outer surface of the load-end cable 200, thereby achieving a seal inside the connector.

[0088] When the device housing 2000 and the terminal block 1000 are interconnected, in one embodiment, a first latching member 2200 is provided on the outside of the device housing 2000. The device housing 2000 is snapped into the outside of the terminal block 1000 via the first latching member 2200, thereby achieving assembly of the device housing 2000 relative to the terminal block 1000. Alternatively, a second latching member 2300 may be provided in the housing cavity of the device housing 2000. The device housing 2000 is snapped into the terminal block 1000 via the second latching member 2300, thereby achieving assembly of the device housing 2000 relative to the terminal block 1000. The first latching member 2200 and the second latching member 2300 may coexist or only one may be present; this is not limited here.

[0089] Regarding the first mounting component 2200, in one embodiment, the first mounting component 2200 may include a mounting rotating arm 2210 and a mounting cover plate 2220 connected to each other. The mounting rotating arm 2210 is rotatably mounted on the outside of the device housing 2000. The mounting cover plate 2220 is provided with a mounting groove 2221, and the outside of the terminal 1000 is provided with a mounting post 2222. When the mounting rotating arm 2210 rotates relative to the device housing 2000, the mounting cover plate 2220 will move synchronously relative to the device housing 2000. At this time, when the mounting groove 2221 of the mounting cover plate 2220 is engaged with the mounting post 2222 of the terminal 1000, the device housing 2000 can be assembled with the terminal 1000. When the mounting groove 2221 of the mounting cover plate 2220 is separated from the mounting post 2222 of the terminal 1000, the device housing 2000 can be separated from the terminal 1000.

[0090] The snap-on cover 2220 is a cover structure. Therefore, when the device housing 2000 is assembled with the terminal block 1000, the snap-on cover 2220 can be configured to cover at least a portion of the outer wall area of ​​the terminal block 1000, thus providing protection to that area. Regarding the material design of the first snap-on component 2200, the first snap-on component 2200 can be made of metal or plastic. When the first snap-on component 2200 is assembled relative to the device housing 2000, the snap-on cover 2220 of the first snap-on component 2200 can be completely fitted onto the device housing 2000, or only half of it can be fitted. Those skilled in the art can choose the assembly method between the snap-on cover 2220 and the device housing 2000 according to actual needs, and no limitation is made here.

[0091] This application also provides a connector system, which includes a connector 100. The photovoltaic terminals of several terminals 1100 of the connector 100 are directly or indirectly connected to a power converter 500. For example, the photovoltaic terminals of the several terminals 1100 can be indirectly connected to the power converter 500 via photovoltaic terminal cables 300. The load terminals of the several terminals 1100 of the connector 100 are connected to a load 400 via load terminal cables 200. The connector system may include a female plug, which can be disposed on either the power converter 500 or the photovoltaic terminal cables 300, thereby allowing the female plug to be configured for mating with the male plug 1600 of the terminals 1000 of the connector 100 in either a direct or indirect connected state.

[0092] See Figure 9 As shown, this application provides a photovoltaic system, which includes at least one of a power converter 500 and a load 400, wherein the aforementioned connector system can be connected to at least one of the power converter 500 and the load 400.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A connector characterized by comprising: The connector comprises: The terminal has a terminal cavity in the interior, and the plurality of terminal pieces are arranged in the terminal cavity; and / or, 2. The connector of claim 1, wherein The plurality of terminal pieces have photovoltaic terminals configured to be electrically connected to the power converter through photovoltaic terminal cables; and / or, The terminal has at least two terminal pieces arranged in the interior, and the plurality of core wires of the load terminal cable include a load terminal L wire, a load terminal N wire, and a load terminal ground wire, and the load terminals of the plurality of terminal pieces are configured to be electrically connected to at least the load terminal L wire and the load terminal N wire; and / or, The terminal has a male plug, and the photovoltaic terminals of the plurality of terminal pieces are arranged in the male plug, and the male plug is configured to be plugged with a female plug of the photovoltaic terminal cable or the power converter. The terminal has a ground wire interface configured to connect the photovoltaic terminal ground wire and the load terminal ground wire of the load terminal cable; and / or, 3. The connector of claim 2, wherein The plurality of core wires of the photovoltaic terminal cable include a photovoltaic terminal L wire and a photovoltaic terminal N wire, or include a photovoltaic terminal L wire, a photovoltaic terminal N wire, and a photovoltaic terminal ground wire; wherein the terminal has at least two terminal pieces arranged in the interior, and the photovoltaic terminals of the plurality of terminal pieces are configured to be electrically connected to at least the photovoltaic terminal L wire and the photovoltaic terminal N wire. The connector comprises a conductive core; 4. The connector of claim 3, wherein The conductive core is arranged in the ground wire interface of the terminal, and the conductive core is configured to electrically connect the photovoltaic terminal ground wire and the load terminal ground wire of the load terminal cable; Alternatively, the conductive core is arranged in the ground wire interface of the terminal, and the interior of the conductive core has at least one core internal passage configured to pass through at least one of the load terminal ground wire and the photovoltaic terminal ground wire, thereby electrically connecting the photovoltaic terminal ground wire and the load terminal ground wire of the load terminal cable. The ground wire interface comprises a grounding cavity opened in the interior of the terminal, the grounding cavity has a first grounding cavity opening and a second grounding cavity opening penetrating through the terminal, the conductive core is arranged in the grounding cavity, the first grounding cavity opening is configured to pass through the load terminal ground wire of the load terminal cable, and the second grounding cavity opening is configured to pass through the photovoltaic terminal ground wire.

5. The connector of claim 4, wherein, The conductive core is sealingly arranged in the grounding cavity through at least one sealing piece; and / or, 6. The connector of claim 5, wherein, The interior of the grounding cavity is provided with at least one limiting piece, and the conductive core is limitingly arranged in the grounding cavity through the at least one limiting piece. The grounding cavity has at least one locking opening penetrating through the terminal, the core internal passage has at least one counter interface penetrating through the conductive core, the counter interface is configured to be connected with the locking opening, the locking opening and the counter interface are configured to pass through a locking piece, and the locking piece is configured to lock at least one of the load terminal ground wire and the photovoltaic terminal ground wire relative to the conductive core; and / or, 7. The connector of claim 6, wherein ​ The sealing member is arranged between the outer part of the conductive core and the inner wall of the grounding chamber, and the first grounding chamber opening and the second grounding chamber opening of the grounding chamber are sealed and isolated by the sealing member; And / or, The inner part of the grounding chamber is provided with at least one limiting member, the limiting member is configured to limit the reverse buckle, the reverse buckle is located at the first grounding chamber opening or the second grounding chamber opening of the grounding chamber, one end of the conductive core is configured to abut against the inner wall of the grounding chamber, and the other end of the conductive core is configured to be clamped and limited by the reverse buckle.

8. The connector of claim 7, wherein, The sealing member is configured as a sealing ring, the sealing ring is sleeved on the outer part of the conductive core, and the conductive core is sealingly matched with the inner wall of the grounding chamber through the sealing ring; and / or, The grounding chamber has a first locking opening penetrating the terminal, the inner part of the conductive core has a first inner core channel, the first inner core channel has a first opposite interface penetrating the conductive core, the first opposite interface is configured to be connected with the first locking opening, the first locking opening and the first opposite interface are configured to be provided with a locking member, and the locking member is configured to lock the load end ground wire relative to the conductive core; The grounding chamber has a second locking opening penetrating the terminal, the inner part of the conductive core has a second inner core channel, the first inner core channel and the second inner core channel are two independent inner core channels that are not communicated, the second inner core channel has a second opposite interface penetrating the conductive core, the second opposite interface is configured to be connected with the second locking opening, the second locking opening and the second opposite interface are configured to be provided with a locking member, and the locking member is configured to lock the photovoltaic end ground wire relative to the conductive core.

9. The connector of claim 1, wherein, The connector comprises: The device shell is provided with a locking mechanism, the locking mechanism comprises a deformation cylinder and a locking sleeve, the deformation cylinder is located in the device shell, a cylinder cavity of the deformation cylinder is communicated with the shell cavity of the device shell, and the locking sleeve is movably sleeved on the outer part of the deformation cylinder.

10. The connector of claim 9, wherein, The deformation cylinder is provided with a plurality of linear slits, each linear slit linearly extends along the axial direction of the deformation cylinder, and a plurality of linear slits are distributed along the circumferential direction of the deformation cylinder.

11. The connector of claim 10, wherein, The outer part of the device shell is provided with a first clamping member, and the device shell is clamped and assembled with the outer part of the terminal through the first clamping member; and / or, 12. The connector of claim 9, wherein, The outer part of the device shell is provided with a first clamping member, and the device shell is clamped and assembled with the outer part of the terminal through the first clamping member; and / or, A second clamping member is arranged in the housing cavity of the device housing, and the device housing is clamped and assembled with the terminal by the second clamping member.

13. The connector of claim 12, wherein, The first clamping member comprises a clamping rotating arm and a clamping cover plate connected with each other, the clamping rotating arm is rotatably assembled outside the device housing, the clamping cover plate is provided with a clamping groove, the terminal is provided with a clamping column outside, the clamping groove of the clamping cover plate is configured to be clamped and assembled with the clamping column of the terminal, and the clamping cover plate is configured to cover at least a part of the outer wall area of the terminal.

14. A connector system characterized by The connector system comprises the connector according to any one of claims 1-13, the photovoltaic end of the plurality of terminals of the connector is directly or indirectly connected with the power converter, and the load end of the plurality of terminals of the connector is connected with the load through a load end cable.

15. The connector system of claim 14, wherein, The connector system comprises: A female plug is arranged on at least one of the power converter or the photovoltaic end cable, and the female plug is configured to be plugged with the male plug of the terminal of the connector.

16. A photovoltaic system characterized by, The photovoltaic system comprises: At least one of the power converter and the load; The connector system according to claim 14 or 15, the connector system is connected with at least one of the power converter and the load.

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