Connector, connector system and photovoltaic system

Abstract

The invention 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] The present application relates to the field of photovoltaic technology, and in particular to a connector, a connector system and a photovoltaic system. Background Art

[0002] Power converters are power conversion devices used to convert electrical energy from one form to another to achieve energy transmission and control under different power requirements. For example, they convert the direct current generated by solar panels into alternating current. They are usually connected to a single or multiple solar panels and installed on the back or near the solar panels to provide power conversion and control functions for each solar panel or each group of panels. For example, in rooftop solar power generation projects such as residential buildings, commercial buildings, and industrial plants, power converters can provide optimized power conversion for each solar panel and are used to install and manage solar power stations.

[0003] In actual application scenarios, multiple power converters need to be connected to one place for centralized control and connected to the power grid or loads in the power grid.

[0004] At present, most manufacturers complete the connection by stripping the wires in the junction box, which is cumbersome and inconvenient, and has low work efficiency, or connect through plug-in terminals at both ends, which is costly and complicated to operate. Summary of the invention

[0005] Based on this, it is necessary to provide a connector, a connector system and a photovoltaic system to address the above-mentioned technical problems.

[0006] The present application provides a connector, comprising:

[0007] A wiring terminal, wherein a plurality of wiring members are arranged inside the wiring terminal, wherein the wiring members have a load end and a photovoltaic end, wherein the load end is configured to be used to connect a plurality of core wires of a load end cable, and the photovoltaic end is configured to be directly or indirectly electrically connected to a power converter.

[0008] In one embodiment, the wiring terminal has a terminal cavity inside, and a plurality of the wiring members are arranged in the terminal cavity; and / or,

[0009] The photovoltaic ends of the plurality of wiring members are configured to be connected to a power converter via a photovoltaic end cable; and / or,

[0010] At least two of the wiring members are arranged inside the wiring terminal, the plurality of core wires of the load-end cable include a load-end L wire, a load-end N wire and a load-end ground wire, and the load ends of the plurality of the wiring members are configured to be electrically connected to at least the load-end L wire and the load-end N wire; and / or,

[0011] The connection terminal has a male plug, and the photovoltaic ends of the plurality of connection members are arranged on the male plug, and the male plug is configured to be plugged with a female plug of a photovoltaic end cable or a power converter.

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

[0013] The several core wires of the photovoltaic end cable include a photovoltaic end L wire and a photovoltaic end N wire, or include a photovoltaic end L wire, a photovoltaic end N wire and a photovoltaic end ground wire; wherein, at least two of the wiring members are arranged inside the wiring terminal, and the photovoltaic ends of the several wiring members are configured to be electrically connected to at least the photovoltaic end L wire and the photovoltaic end N wire.

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

[0015] Wherein, the conductive core is arranged at the ground wire interface of the wiring terminal, and the conductive core is configured to be used for electrically connecting the photovoltaic end ground wire and the load end ground wire of the load end cable;

[0016] Alternatively, the conductive core is arranged at the ground wire interface of the terminal, and the conductive core has at least one inner core channel, and the inner core channel is 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 ground wire interface includes a grounding chamber opened inside the wiring terminal, the grounding chamber has a first grounding cavity opening and a second grounding cavity opening that pass through the wiring terminal, the conductive core is arranged in the grounding chamber, the first grounding cavity opening is configured to pass through the load-end ground wire of the load-end cable, and the second grounding cavity opening is configured to pass through the photovoltaic-end ground wire.

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

[0019] At least one limiting member is disposed inside the grounding chamber, and the conductive core is limitedly assembled in the grounding chamber by the at least one limiting member.

[0020] In one embodiment, the grounding chamber has at least one locking opening passing through the terminal, the core channel has at least one docking opening passing through the conductive core, the docking opening is configured to be connected with the locking opening, the locking opening and the docking opening are configured to be provided with a locking member, and the locking member is configured to lock at least one of the load-end ground wire and the photovoltaic-end ground wire relative to the conductive core; and / or,

[0021] The sealing member 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 member; and / or,

[0022] At least one limit member is arranged inside the grounding chamber, and the limit member is configured as a limit buckle, and the limit 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 be engaged with the limit buckle for limiting.

[0023] In one embodiment, the sealing member is configured as a sealing ring, the sealing ring is sleeved on the outside of the conductive core, and the conductive core is sealed with the inner wall of the grounding chamber through the sealing ring; and / or,

[0024] The grounding chamber has a first locking opening passing through the wiring terminal, the conductive core has a first inner core passage inside, the first inner core passage has a first mating port passing through the conductive core, the first mating port is configured to be connected with the first locking opening, the first locking opening and the first mating port 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;

[0025] The grounding chamber has a second locking opening that passes through the terminal block, and the interior of the conductive core has a second intra-core channel, wherein the first intra-core channel and the second intra-core channel are two independent intra-core channels that are not connected, and the second intra-core channel has a second docking port that passes through the conductive core, and the second docking port is configured to be connected to the second locking opening, and the second locking opening and the second docking port are configured to be used to pass a locking piece, and the locking piece is configured to lock the photovoltaic end ground wire relative to the conductive core.

[0026] In one embodiment, the connector comprises:

[0027] A device housing is provided with a housing chamber with two ends passing therethrough, the device housing is assembled on the outside of the connection terminal, and at least a part of the structure of the connection terminal is located in the housing chamber of the device housing.

[0028] In one of the embodiments, the device housing is provided with a locking mechanism, which includes a deformation cylinder and a locking sleeve. The deformation cylinder is located in the device housing, and the cylinder cavity of the deformation cylinder is communicated with the shell cavity of the device housing. The locking sleeve is movably sleeved on the outside of the deformation cylinder, and the locking sleeve is configured to change the radial size of at least a part of the cylinder cavity of the deformation cylinder.

[0029] In one of the embodiments, the deformable cylinder is provided with a plurality of linear slits, each of which extends linearly along the axial direction of the deformable cylinder, and a plurality of the linear slits are distributed along the circumference of the deformable cylinder. Part of the cylinder body of the deformable cylinder is divided into deformable arms based on adjacent linear slits, and a plurality of the linear slits form a plurality of deformable arms along the circumference of the deformable cylinder. The plurality of deformable arms are configured to move closer to each other based on the locking force of the locking sleeve, thereby changing the radial size of at least a portion of the cylinder cavity of the deformable cylinder.

[0030] In one embodiment, a first clamping member is disposed on the outside of the device housing, and the device housing is assembled with the outside of the connection terminal by clamping the first clamping member; and / or,

[0031] A second clamping piece is arranged in the housing chamber of the device housing, and the device housing is clamped and assembled with the connection terminal through the second clamping piece.

[0032] In one of the embodiments, the first clamping component includes a clamping rotating arm and a clamping cover plate that are connected to each other, the clamping rotating arm is rotatably assembled on the outside of the device housing, the clamping cover plate is provided with a clamping groove, and the outside of the terminal is provided with a clamping column, 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 portion of the outer wall area of ​​the terminal.

[0033] The present application provides a connector system, which includes the connector, wherein the photovoltaic ends of several of the wiring members of the connector are directly or indirectly connected to a power converter, and the load ends of several of the wiring members of the connector are connected to a load through a load end cable.

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

[0035] The 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 connection terminal of the connector.

[0036] The present 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 a load.

[0039] Compared with the wiring methods in the prior art, the connectors, connector systems and photovoltaic systems provided by the present application can be directly plugged into the plug (located between the photovoltaic inverter and the photovoltaic end cable) through the photovoltaic end during the connection process, without the need for a large amount of wire stripping, and the connection is faster; moreover, the connector in the present application is smaller in size and lighter in weight, and not only is it easier for its own structure to achieve a higher level of protection, but it can also be placed entirely under the photovoltaic panel to avoid exposure, which is beneficial for sun protection, dust prevention and waterproofing, especially in the scenario of household roofs, the protection advantage of this connector is more obvious. In addition, the number of wiring parts of the connector matches the number of core wires of the connected photovoltaic system or photovoltaic end cable, and the wiring parts are limited to have a load end and a photovoltaic end, so that the connector can not only quickly electrically connect several core wires of the photovoltaic system and several core wires of the photovoltaic end cable based on suitable wiring parts, but also is not restricted by specifications, thereby improving wiring efficiency and wiring adaptability in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 An exploded view of a connector provided according to an embodiment of the present application.

[0041] Figure 2 For Figure 1 A perspective view of the terminal block is shown.

[0042] Figure 3 For Figure 2 A first cross-sectional view of a terminal block is shown.

[0043] Figure 4 For Figure 2 A cross-sectional view of a terminal block is shown without the conductive core.

[0044] Figure 5 For Figure 2 A cross-sectional view of a terminal block including a conductive core is shown.

[0045] Figure 6 A three-dimensional diagram of a conductive core and a locking member provided in accordance with an embodiment of the present application.

[0046] Figure 7 For Figure 1 A first perspective stereoscopic view of the device housing is shown.

[0047] Figure 8 For Figure 1 A second perspective stereoscopic view of the device housing is shown.

[0048] Fig. 9 A connection frame diagram of a photovoltaic system provided in one embodiment of the present application.

[0049] Figure Number:

[0050] 100, connector; 200, load-end cable; 300, photovoltaic-end cable; 400, load; 500, power converter;

[0051] 1000, terminal block; 2000, device housing;

[0052] 1100, connection piece; 1200, ground wire interface; 1300, conductive core; 1400, sealing piece; 1500, stopper; 1600, male plug;

[0053] 1210, grounding chamber; 1220, locking opening; 1230, locking member;

[0054] 1310, core inner channel; 1320, docking port;

[0055] 2100, locking mechanism; 2200, first clamping member; 2300, second clamping member;

[0056] 2210, card-mounted rotating arm; 2220, card-mounted cover plate; 2221, card-mounted groove; 2222, card-mounted column. DETAILED DESCRIPTION

[0057] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0058] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0059] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, 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 implementation method.

[0063] See also Figure 1 As shown, the present 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 in the figure enables the connection terminal 1000 to be assembled with the device housing 2000. Figure 2 and Figure 3As shown, a plurality of wiring members 1100 may be disposed inside the wiring terminal 1000. For example, in one embodiment, a terminal cavity may be disposed inside the wiring terminal 1000, and thus a plurality of wiring members 1100 may be disposed in the terminal cavity, thereby being assembled inside the wiring terminal 1000. In addition, a plurality of wiring members 1100 may also be assembled inside the wiring terminal 1000 through other components or other structures, which are not limited here.

[0064] It should be noted that the several wiring members 1100 inside the above-mentioned terminal 1000 are an integrated conductive structure. When the core wire of the cable (for example, the load-end cable 200 or the photovoltaic-end cable 300) is connected, the core wire is connected to the wiring member 1100 by docking (plugging). The plugging method can be based on the structural design of the wiring member 1100 or the structural design of the terminal 1000, rather than the independent terminal posts in the existing junction box.

[0065] According to the number of core wires of the load-end cable 200 or the photovoltaic-end cable 300 to be connected, the wiring member 1100 can be adaptively set to a matching number, which is not limited here. Therefore, if the wiring member 1100 is defined to have a load end and a photovoltaic end, the load end can be used to connect several core wires of the load-end cable 200, and the photovoltaic end can be configured to be directly or indirectly electrically connected to the power converter 500. For example, in the case of indirect connection, the photovoltaic ends of several wiring members 1100 can be configured to be connected to the power converter 500 through the photovoltaic end cable 300.

[0066] At present, when operators configure junction boxes at construction sites, they need to strip the cables and complete the wiring by stripping the wires. The wiring is cumbersome and inconvenient, and the work efficiency is low. For example, in a conventional stripping and wiring process, it is necessary to use tools such as wire strippers, utility knives, scissors or needle-nosed pliers to accurately strip the insulation layer of the cable. The core wire can be placed in the appropriate blade of the wire stripper, and the pliers can be gently pressed to ensure that the blade cuts into the insulation layer but does not damage the core wire. The wire stripper is rotated or the core wire is pulled to strip the insulation layer. Alternatively, a utility knife or scissors can be used to cut the insulation layer in a circular manner to avoid damaging the core wire, and the insulation layer can be gently stripped off. Then determine the stripping length according to the wiring requirements, and use wire strippers or needle-nosed pliers to clamp the stripped core wire in the cable to ensure stability. Correct stripping operations can ensure that the wiring is firm and the conductivity is good.

[0067] Compared with the wiring method in the prior art, the connector 100 provided in the present application can be directly plugged into the plug (located at the photovoltaic inverter and the photovoltaic end cable) through the photovoltaic end during the connection process, without a large amount of wire stripping, and the connection is faster; moreover, the connector in the present application is smaller in size and lighter in weight. Not only is it easier for its own structure to achieve a higher level of protection, but it can also be placed entirely under the photovoltaic panel to avoid exposure, which is conducive to sun protection, dust prevention and waterproofing, especially in the scenario of household roofs, the protection advantage of this connector is more obvious. In addition, the number of wiring members 1100 of the connector 100 matches the number of core wires of the connected load end cable 200 or photovoltaic end cable 300, and the wiring member 1100 is limited to have a load end and a photovoltaic end. The load end and the photovoltaic end can be electrically connected by directly plugging, so that the connector 100 can quickly electrically connect several core wires of the load end cable 200 and several core wires of the photovoltaic end cable 300 based on the appropriate wiring member 1100, and is not limited by specifications, thereby improving wiring efficiency and wiring adaptability in different scenarios.

[0068] Regarding the way in which the connection terminal 1000 is connected to the power converter 500, in the case of direct connection, it can be defined that the power converter 500 has a female plug, the connection terminal 1000 can have a male plug 1600, the photovoltaic ends of several connection pieces 1100 are arranged on the male plug 1600, and the male plug 1600 is configured to be plugged with the female plug of the power converter 500. Alternatively, in the case of indirect connection, it can be defined that the photovoltaic end cable 300 has a female plug, the connection terminal 1000 can have a male plug 1600, the photovoltaic ends of several connection pieces 1100 are arranged on the male plug 1600, and the male plug 1600 is configured to be plugged with the female plug of the photovoltaic end cable 300.

[0069] Regarding the number setting of the wiring members 1100 mentioned above, in one embodiment, at least two wiring members 1100 can be set inside the terminal block 1000. In this case, the several core wires of the load-end cable 200 can correspondingly include a load-end L wire, a load-end N wire and a load-end ground wire. Therefore, the load ends of at least two wiring members 1100 can be configured to be electrically connected to at least the load-end L wire and the load-end N wire, that is, the load end of one wiring member 1100 is independently connected to the load-end L wire, and the load end of one wiring member 1100 is also independently connected to the load-end N wire.

[0070] Several core wires of the load-end cable 200 may also include a load-end ground wire. Therefore, regarding the electrical connection of the load-end ground wire, in one embodiment, a ground wire interface 1200 may be provided at the terminal 1000. At this time, the additional ground wire interface 1200 may be configured to connect the photovoltaic-end ground wire and the load-end ground wire of the load-end cable 200, so as to realize the electrical connection between the load-end ground wire and the photovoltaic-end ground wire. It should be noted that several core wires of the photovoltaic-end cable 300 may include the photovoltaic-end L wire and the photovoltaic-end N wire, i.e., not including the photovoltaic-end ground wire, or several core wires of the photovoltaic-end cable 300 may include the photovoltaic-end L wire, the photovoltaic-end N wire and the photovoltaic-end ground wire, i.e., including the photovoltaic-end ground wire.

[0071] In this state, with respect to the design of the photovoltaic end cable 300, at least two wiring members 1100 may also be arranged inside the terminal block 1000, and the photovoltaic ends of several wiring members 1100 are configured to be electrically connected to at least the photovoltaic end L line and the photovoltaic end N line, that is, the photovoltaic end of one wiring member 1100 is used to independently connect the photovoltaic end L line, and at the same time, the photovoltaic end of one wiring member 1100 is also used to independently connect the photovoltaic end N line.

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

[0073] See also Figure 4 As shown, in one embodiment, the ground wire interface 1200 includes a grounding chamber 1210 opened inside the wiring terminal 1000, and the grounding chamber 1210 is in a state of being through-connected at both ends, that is, the grounding chamber 1210 has a first grounding cavity opening and a second grounding cavity opening that pass through the wiring terminal 1000, and the conductive core 1300 is arranged in the grounding chamber 1210. At this time, the first grounding cavity opening can be configured to be used for passing the load-end ground wire of the load-end cable 200, and the second grounding cavity opening can be configured to be used for passing the photovoltaic-end ground wire, thereby 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 opening 1220 penetrating the terminal 1000, and the core channel 1310 may have at least one docking opening 1320 penetrating the conductive core 1300, and the docking opening 1320 is configured to be connected to the locking opening 1220, that is, Figure 5 As shown, after the conductive core 1300 is assembled into the grounding chamber 1210 , the locking opening 1220 and the docking opening 1320 can correspond to each other one-to-one, thereby forming a connection.

[0075] At this time, the locking opening 1220 and the docking opening 1320 can be configured to be used to simultaneously pass the locking member 1230. When the locking member 1230 is passed through the locking opening 1220 and the docking opening 1320, the locking member 1230 can be pressed and contacted with at least one of the internal load-end ground wire and the photovoltaic-end ground wire, so that the locking member 1230 can be configured to lock at least one of the load-end ground wire and the photovoltaic-end ground wire relative to the conductive core 1300. The end of the locking member 1230 can be set as a hexagonal slot or a cross slot to solve the simplicity and universality of the tool.

[0076] For example, see Figure 5 and Figure 6 In the specific embodiment shown, the grounding chamber 1210 has a first locking opening 1220 that passes through the terminal block 1000, the interior of the conductive core 1300 has a first core channel 1310, the first core channel 1310 has a first docking interface 1320 that passes through the conductive core 1300, the first docking interface 1320 is configured to be connected to the first locking opening 1220, the first locking opening 1220 and the first docking interface 1320 are configured to be used for passing a locking member 1230, and the locking member 1230 is configured to lock the load end ground wire relative to the conductive core 1300.

[0077] At the same time, the grounding chamber 1210 has a second locking opening 1220 that passes through the terminal block 1000, and the interior of the conductive core 1300 has a second intra-core channel 1310, wherein the first intra-core channel 1310 and the second intra-core channel 1310 are two independent intra-core channels 1310 that are not connected, and the second intra-core channel 1310 has a second docking port 1320 that passes through the conductive core 1300, and the second docking port 1320 is configured to be connected to the second locking opening 1220, and the second locking opening 1220 and the second docking port 1320 are configured to be used to pass a locking piece 1230, and the locking piece 1230 is configured to lock the photovoltaic end ground wire relative to the conductive core 1300.

[0078] From the above, it can be seen that when the first core channel 1310 and the second core channel 1310 are two independent 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 core channel 1310 and the second core channel 1310, and then electrically connected based on the conductive core 1300. At this time, the load-end ground wire and the photovoltaic-end ground wire are respectively located in the first core channel 1310 and the second core channel 1310 that are independent of each other, and waterproof isolation can be formed at the level of the conductive core 1300, thereby ensuring the sealing and waterproofness between the load-end ground wire and the photovoltaic-end ground wire to a certain extent.

[0079] Regarding the sealing assembly between the load end ground wire and the photovoltaic end ground wire, in one embodiment, continue to refer to Figure 5 As shown, the conductive core 1300 can be sealed and assembled in the grounding chamber 1210 through at least one seal 1400, thereby realizing a waterproof seal between the load end ground wire and the photovoltaic end ground wire through the seal 1400. For example, the seal 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 sections 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 through the seal 1400, and a sealed and isolated waterproof state is formed between the load end and the photovoltaic end.

[0080] The seal 1400 may adopt a variety of structures, such as a sealing ring, sealing mud, sealing sleeve, etc., which are not limited here. In one embodiment, the seal 1400 may be configured as a sealing ring, which is sleeved on the outside of the conductive core 1300, and the sealing ring may be located at the approximately middle position of the conductive core 1300, so that the conductive core 1300 can be sealed with the inner wall of the grounding chamber 1210 through the sealing ring, and the first grounding cavity opening and the second grounding cavity opening of the grounding chamber 1210 are waterproofly sealed and isolated at the approximately middle position of the conductive core 1300. Among them, the compression size of the sealing ring relative to the inner wall of the grounding chamber 1210 can be designed to be 0.5mm, and the compression size of the sealing ring relative to the conductive core 1300 can be designed to be 0.3mm, and the dimensional tolerance is ±0.1mm.

[0081] Continue reading Figure 5As shown, at least one stopper 1500 is disposed inside the grounding chamber 1210, and the conductive core 1300 is assembled in the grounding chamber 1210 by the at least one stopper 1500. Based on the stopper 1500, the conductive core 1300 can be limited in the grounding chamber 1210 after being assembled in the grounding chamber 1210, thereby preventing the conductive core 1300 from being disengaged or misplaced in the grounding chamber 1210. In one embodiment, at least one stopper 1500 is disposed inside the grounding chamber 1210, and the stopper 1500 is configured as a stopper undercut, which can be located at the first grounding cavity opening or the second grounding cavity opening of the grounding chamber 1210, so that the stopper 1500 has an undercut stopper to prevent loosening, thereby realizing a quick assembly function.

[0082] Therefore, when the conductive core 1300 is loaded into the grounding chamber 1210 from the first grounding cavity opening or the second grounding cavity opening, one end of the conductive core 1300 can be configured to abut against the inner wall of the grounding chamber 1210, and the other end of the conductive core 1300 is configured to be engaged with the limiting buckle for limiting positioning, so that the conductive core 1300 can be confined in the grounding chamber 1210 based on the limiting buckle.

[0083] For the device housing 2000 of the connector 100, please refer to Figure 7 and Figure 8 As shown, in one embodiment, the device housing 2000 may be provided with a housing chamber with two ends connected thereto, so that the housing chamber forms a chamber structure with two ends connected thereto. In this case, the device housing 2000 may be assembled on the outside of the terminal 1000 to protect the terminal 1000. Moreover, when the device housing 2000 is assembled on the outside of the terminal 1000, a sealed and waterproof structure may be constructed between the device housing 2000 and the terminal 1000 according to requirements. For example, a sealing rubber ring may be arranged between the device housing 2000 and the terminal 1000, so that the device housing 2000 may be assembled on the outside of the terminal 1000 to form a sealed assembly for at least a part of the structure of the terminal 1000, thereby achieving waterproof protection. Among them, a part of the structure or the whole structure of the terminal 1000 may be assembled in the housing chamber of the device housing 2000 according to actual requirements, which is not limited 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 the cylinder cavity of the deformation cylinder is communicated with the housing chamber of the device housing 2000, the locking sleeve is movably sleeved on the outside of the deformation cylinder, and the locking sleeve is configured to change the radial size of at least a part of the cylinder cavity of the deformation cylinder. It can be seen that the radial size of at least a part of the cylinder cavity of the deformation cylinder has a certain degree of deformation ability, and the deformation ability can make the radial size of at least a part of the cylinder cavity of the deformation cylinder change, and then adapt to the load-end cables 200 with different diameters when they are in different radial sizes.

[0085] For example, in one embodiment, the deformation tube is provided with a plurality of linear slits, each of which extends linearly along the axial direction of the deformation tube, and the plurality of linear slits are distributed along the circumference of the deformation tube, and a portion of the deformation tube body is divided into deformation arms based on adjacent linear slits, and a plurality of linear slits form a plurality of deformation arms along the circumference of the deformation tube. At this time, since the plurality of deformation arms are independent structures, they can be brought closer to or separated from each other, and therefore, the radial dimension of a portion of the deformation tube body can be changed based on the plurality of deformation arms being brought closer to or separated from each other.

[0086] At this time, the locking sleeve can be mounted on the deformation cylinder, and a plurality of deformation arms can be configured to move closer to each other based on the locking force of the locking sleeve, thereby reducing the radial size of this part of the cylinder body of the deformation cylinder, or when the locking sleeve is separated from the deformation cylinder, the radial size of this part of the cylinder body of the deformation cylinder recovers and becomes larger by itself, thereby changing the radial size of at least a part of the cylinder cavity of the deformation cylinder in this way.

[0087] In addition, part of the body of the deformation tube can also be made of flexible material, for example, at least part of the body of the deformation tube is made of silicone material, so that the deformation tube is constituted as a silicone member, and based on the flexible material characteristics of silicone, the radial size of the deformation tube is changed, which is not limited here. In some possible implementations, an elastic member can also be provided in the above deformation tube, and a through hole is opened in the middle of the elastic member, and the load-end cable 200 can pass through the through hole. When the deformation tube is deformed, the elastic member generates elastic deformation, squeezes the load-end cable 200, and the entrance of the through hole changes from a circle to a shape imitating the outer surface of the load-end cable 200, thereby achieving sealing inside the connector.

[0088] When the device housing 2000 and the connection terminal 1000 are connected to each other, in one embodiment, a first clamping member 2200 is disposed on the outside of the device housing 2000, and the device housing 2000 is assembled with the outside of the connection terminal 1000 by clamping the first clamping member 2200, thereby realizing the assembly of the device housing 2000 relative to the connection terminal 1000. Alternatively, a second clamping member 2300 may also be disposed in the housing chamber of the device housing 2000, and the device housing 2000 is assembled with the connection terminal 1000 by clamping the second clamping member 2300, thereby realizing the assembly of the device housing 2000 relative to the connection terminal 1000. The first clamping member 2200 and the second clamping member 2300 may exist at the same time or one of them may exist, which is not limited here.

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

[0090] Among them, the card cover plate 2220 is a cover plate structure, so when the device housing 2000 can be assembled with the terminal 1000, the card cover plate 2220 can be configured to cover at least a part of the outer wall area of ​​the terminal 1000 to protect the area. Regarding the material design of the first card component 2200, the first card component 2200 can be made of metal or plastic material, and when the first card component 2200 is assembled relative to the device housing 2000, the card cover plate 2220 of the first card component 2200 can be completely mounted on the device housing 2000, or only half of it can be mounted. Those skilled in the art can select the assembly method between the card cover plate 2220 and the device housing 2000 according to actual needs, which is not limited here.

[0091] The present application also provides a connector system, which includes a connector 100, wherein the photovoltaic ends of several wiring members 1100 of the connector 100 are directly or indirectly connected to the power converter 500, for example, the photovoltaic ends of several wiring members 1100 can be indirectly connected to the power converter 500 through the photovoltaic end cable 300, and the load ends of several wiring members 1100 of the connector 100 are connected to the load 400 through the load end cable 200. The connector system may include a female plug, which can be provided on the power converter 500 or the photovoltaic end cable 300, so that the female plug can be configured to be plugged with the male plug 1600 of the terminal 1000 of the connector 100 in a state of direct or indirect connection.

[0092] See also Fig. 9 As shown, the present application provides a photovoltaic system, which includes at least one of a power converter 500 and a load 400 . In this case, the connector system mentioned above can be connected to at least one of the power converter 500 and the load 400 .

[0093] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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 above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A connector, characterized in that: The connector comprises: A wiring terminal, wherein a plurality of wiring members are arranged inside the wiring terminal, wherein the wiring members have a load end and a photovoltaic end, wherein the load end is configured to be used to connect a plurality of core wires of a load end cable, and the photovoltaic end is configured to be directly or indirectly electrically connected to a power converter.

2. The connector according to claim 1, characterized in that: The wiring terminal has a terminal cavity inside, and the plurality of wiring members are arranged in the terminal cavity; and / or, The photovoltaic ends of the plurality of wiring members are configured to be connected to a power converter via a photovoltaic end cable; and / or, At least two of the wiring members are arranged inside the wiring terminal, the plurality of core wires of the load-end cable include a load-end L wire, a load-end N wire and a load-end ground wire, and the load ends of the plurality of the wiring members are configured to be electrically connected to at least the load-end L wire and the load-end N wire; and / or, The connection terminal has a male plug, and the photovoltaic ends of the plurality of connection pieces are arranged on the male plug, and the male plug is configured to be plugged with a female plug of a photovoltaic end cable or a power converter.

3. The connector according to claim 2, characterized in that: The wiring terminal is provided with a ground wire interface, and the ground wire interface is configured to connect the photovoltaic end ground wire and the load end ground wire of the load end cable; and / or, The several core wires of the photovoltaic end cable include a photovoltaic end L wire and a photovoltaic end N wire, or include a photovoltaic end L wire, a photovoltaic end N wire and a photovoltaic end ground wire; wherein, at least two of the wiring members are arranged inside the wiring terminal, and the photovoltaic ends of the several wiring members are configured to be electrically connected to at least the photovoltaic end L wire and the photovoltaic end N wire.

4. The connector according to claim 3, characterized in that: The connector includes a conductive core; Wherein, the conductive core is arranged at the ground wire interface of the wiring terminal, and the conductive core is configured to be used for electrically connecting the photovoltaic end ground wire and the load end ground wire of the load end cable; Alternatively, the conductive core is arranged at the ground wire interface of the terminal, and the conductive core has at least one inner core channel, and the inner core channel is 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.

5. The connector according to claim 4, characterized in that: The ground wire interface includes a grounding chamber opened inside the wiring terminal, the grounding chamber has a first grounding cavity opening and a second grounding cavity opening that pass through the wiring terminal, the conductive core is arranged in the grounding chamber, the first grounding cavity opening is configured to be used for passing through a load-end ground wire of a load-end cable, and the second grounding cavity opening is configured to be used for passing through a photovoltaic-end ground wire.

6. The connector according to claim 5, characterized in that: The conductive core is sealed and assembled in the grounding chamber by at least one sealing member; and / or, At least one limiting member is disposed inside the grounding chamber, and the conductive core is limitedly assembled in the grounding chamber by the at least one limiting member.

7. The connector according to claim 6, characterized in that: The grounding chamber has at least one locking opening passing through the wiring terminal, the core inner channel has at least one docking opening passing through the conductive core, the docking opening is configured to be connected with the locking opening, the locking opening and the docking opening are configured to be provided with a locking member, and the locking member is configured to lock at least one of the load-end ground wire and the photovoltaic-end ground wire relative to the conductive core; and / or, The sealing member is arranged 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 member; and / or, At least one limit member is arranged inside the grounding chamber, and the limit member is configured as a limit buckle, and the limit 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 be engaged with the limit buckle for limiting.

8. The connector according to claim 7, characterized in that: The sealing member is configured as a sealing ring, the sealing ring is sleeved on the outside of the conductive core, and the conductive core is sealed with the inner wall of the grounding chamber through the sealing ring; and / or, The grounding chamber has a first locking opening passing through the wiring terminal, the conductive core has a first inner core passage inside, the first inner core passage has a first mating port passing through the conductive core, the first mating port is configured to be connected with the first locking opening, the first locking opening and the first mating port 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 that passes through the terminal block, and the interior of the conductive core has a second intra-core channel, wherein the first intra-core channel and the second intra-core channel are two independent intra-core channels that are not connected, and the second intra-core channel has a second docking port that passes through the conductive core, and the second docking port is configured to be connected to the second locking opening, and the second locking opening and the second docking port are configured to be used to pass a locking piece, and the locking piece is configured to lock the photovoltaic end ground wire relative to the conductive core.

9. The connector according to claim 1, characterized in that: The connector comprises: A device housing is provided with a housing chamber with two ends passing therethrough, the device housing is assembled on the outside of the connection terminal, and at least a part of the structure of the connection terminal is located in the housing chamber of the device housing.

10. The connector according to claim 9, characterized in that: The device housing is provided with a locking mechanism, which includes a deformation cylinder and a locking sleeve. The deformation cylinder is located in the device housing, and the cylinder cavity of the deformation cylinder is communicated with the shell chamber of the device housing. The locking sleeve is movably sleeved on the outside of the deformation cylinder, and the locking sleeve is configured to change the radial size of at least a part of the cylinder cavity of the deformation cylinder.

11. The connector according to claim 10, characterized in that: The deformable cylinder is provided with a plurality of linear slits, each of which extends linearly along the axial direction of the deformable cylinder, and the plurality of linear slits are distributed along the circumference of the deformable cylinder. Part of the cylinder body of the deformable cylinder is divided into deformable arms based on adjacent linear slits, and the plurality of linear slits form a plurality of deformable arms along the circumference of the deformable cylinder. The plurality of deformable arms are configured to move closer to each other based on the locking force of the locking sleeve, thereby changing the radial size of at least a portion of the cylinder cavity of the deformable cylinder.

12. The connector according to claim 9, characterized in that A first clamping member is disposed outside the device housing, and the device housing is assembled with the outside of the connection terminal by means of the first clamping member; and / or, A second clamping piece is arranged in the housing chamber of the device housing, and the device housing is clamped and assembled with the connection terminal through the second clamping piece.

13. The connector according to claim 12, characterized in that: The first clamping component includes a clamping rotating arm and a clamping cover plate that are connected to each other. The clamping rotating arm is rotatably assembled on the outside of the device housing. The clamping cover plate is provided with a clamping groove. The outside of the terminal is provided with a clamping column. The clamping groove of the clamping cover plate is configured to be clamped and assembled with the clamping column of the terminal. The clamping cover plate is configured to cover at least a portion of the outer wall area of ​​the terminal.

14. A connector system, characterized in that: The connector system includes a connector as described in any one of claims 1-13, the photovoltaic ends of several of the wiring members of the connector are directly or indirectly connected to a power converter, and the load ends of several of the wiring members of the connector are connected to a load via a load end cable.

15. The connector system according to claim 14, characterized in that The connector system comprises: The 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 connection terminal of the connector.

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

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