Photovoltaic connector and photovoltaic system

Abstract

The utility model relates to a photovoltaic connector and a photovoltaic system, the photovoltaic connector comprises a positive pole body, a negative pole body and a locking assembly, the positive pole body is used for fixedly connecting a positive pole copper body; the cathode body is used for fixedly connecting the cathode copper body, the anode copper body and the cathode copper body are oppositely inserted, and the anode body and the cathode body are buckled and connected; the ends, far away from each other, of the positive electrode body and the negative electrode body are connected with a locking assembly respectively to fix corresponding cables, the locking assembly comprises a base and a cover cap, the base and the cover cap are connected in a buckled mode, and the cables are fixed between the base and the cover cap; wherein the whole formed by connecting the positive electrode body and the negative electrode body is of a flat structure, and the locking assembly is also of a flat structure. Through the arrangement, the size of the photovoltaic connector in the thickness direction is reduced, so that the thickness of the photovoltaic connector is not higher than the height of the part, protruding relative to the back plate, of the frame, and the risk that the photovoltaic module and the photovoltaic connector are damaged in the transportation process can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic systems, in particular to a photovoltaic connector and a photovoltaic system. Background Art

[0002] Photovoltaic connectors are key parts that connect components, combiner boxes, controllers, inverters, and other parts in photovoltaic power generation systems. Generally, photovoltaic connectors are located between the solar cell array and the solar charging control device composed of solar cell modules. Photovoltaic connectors include connection interfaces, which are connected to the solar cell array and the solar charging control device through cables. Their main function is to connect the power generated by solar cells to external lines, thereby conducting the current generated by solar cells. During the packaging and transportation of photovoltaic modules, due to the large size of the connectors, the connectors are squeezed against the front and back of the photovoltaic modules, causing damage to the modules and connectors, which is particularly serious on double-sided glass modules. Utility Model Content

[0003] Based on this, it is necessary to provide a photovoltaic connector and a photovoltaic system to address the technical problem of damage to components and connectors during transportation caused by the large size of the connector in the prior art.

[0004] A photovoltaic connector, comprising:

[0005] The positive electrode body is used to fix and connect the positive electrode copper body;

[0006] The negative electrode body is used to fix and connect the negative electrode copper body, the positive electrode copper body is inserted into the negative electrode copper body, and the positive electrode body and the negative electrode body are snap-connected;

[0007] A locking assembly, the ends of the positive electrode body and the negative electrode body that are away from each other are connected to the locking assembly to fix the corresponding cables, the locking assembly includes a base and a cover, the base and the cover are snap-connected, and the cable is fixed between the base and the cover;

[0008] The positive electrode body and the negative electrode body are connected to form a flat structure, and the locking assembly is also a flat structure.

[0009] In some embodiments, a first wire passing groove is constructed on the base, and a second wire passing groove is provided on the cover, and the first wire passing groove and the second wire passing groove together define a wire passing channel for the cable to pass through.

[0010] In some embodiments, in the base and the cover, two opposite side groove walls of one are respectively provided with snap holes, and two pairs of side groove walls of the other are respectively provided with snap protrusions, and the snap protrusions are buckled into the snap holes.

[0011] In some embodiments, two spaced-apart snap-in protrusions are respectively provided on the outer sides of two opposite side groove walls of the base, and two spaced-apart snap-in holes are respectively provided on two opposite side groove walls of the cover, and the snap-in protrusions correspond to and snap-in with the snap-in holes.

[0012] In some embodiments, the engaging protrusion is provided on one end of the side groove wall of the base facing the cover;

[0013] The clamping hole is arranged at a position where the side groove wall and the groove bottom wall are connected on the cover.

[0014] In some embodiments, the snap-fit ​​protrusion includes:

[0015] A guide surface, wherein the guide surface intersects with an end surface of the side groove wall facing the cover, and a distance between the guide surface and an outer side surface of the side groove wall gradually increases from an end facing the cover to an end away from the cover;

[0016] A limiting surface, wherein the limiting surface intersects with the outer side surface of the side groove wall and the guide surface, the limiting surface is perpendicular to the outer side surface of the side groove wall, and the limiting surface and the bottom wall of the clamping hole mutually resist and limit each other.

[0017] In some embodiments, limiting grooves are provided at the ends of the positive electrode body and the negative electrode body that are away from each other, and limiting protrusions are provided on the inner wall surfaces of the first passing line groove and the second passing line groove, and the limiting protrusions are matched with the limiting grooves to limit the cover and the base in the axial direction of the positive electrode body or the negative electrode body.

[0018] In some embodiments, the photovoltaic connector further comprises:

[0019] A protective sleeve is sleeved on the cable, and one end of the protective sleeve is snap-connected with the positive electrode body or the negative electrode body.

[0020] In some embodiments, the positive electrode body is provided with two spaced-apart buckles, and the negative electrode body is provided with two oppositely disposed sockets, and the buckles are engaged with the sockets.

[0021] A photovoltaic system comprises the photovoltaic connector as described above.

[0022] Beneficial effects of the utility model:

[0023] The utility model provides a photovoltaic connector, which is achieved by fixing the positive copper piece on the positive body, fixing the negative copper piece on the negative body, and plugging the positive copper piece and the negative copper piece together to achieve electrical connection between the two. The positive body and the negative body are snap-connected to achieve mechanical connection between the positive and negative bodies. A locking assembly is set to fix the cable to the positive body or the negative body, and the cable is limited while the copper piece and the cable are electrically connected, thereby improving the reliability of the photovoltaic connector. In the present application, the base and the cover are snap-connected so that the whole after the positive body and the negative body are connected is set to a flat structure, and the locking assembly is set to a flat structure, which is conducive to reducing the size of the photovoltaic connector in the thickness direction, so as to facilitate making the thickness of the photovoltaic connector not higher than the height of the protruding part of the frame relative to the back plate, thereby effectively reducing the risk of damage to the photovoltaic assembly and the photovoltaic connector during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a schematic structural diagram of components of a positive terminal of a photovoltaic connector provided by an embodiment of the present invention;

[0025] FIG2 is a schematic structural diagram of components of a negative terminal of a photovoltaic connector provided by an embodiment of the present invention;

[0026] FIG3 is a schematic structural diagram of a photovoltaic connector provided by an embodiment of the present invention when the middle locking assembly is not installed with the positive and negative electrode bodies.

[0027] Reference numerals:

[0028] Positive electrode body 100; limiting groove 110; buckle 120; negative electrode body 200; plug hole 210; locking assembly 300; base 310; snap-on protrusion 311; guide surface 3111; limiting surface 3112; cover 320; second wire-passing groove 321; locking hole 322; protective sleeve 400; cable 500; sealing ring 600; positive electrode copper part 700. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model 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 utility model. However, the utility model 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 utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0030] In the description of the present invention, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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 the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a 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. A first feature being "below", "below" or "below" a 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.

[0034] It should be noted that when 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. When 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. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] Referring to Figures 1 to 3, an embodiment of the utility model provides a photovoltaic connector, which includes a positive body 100, a negative body 200 and a locking assembly 300. The positive body 100 is used to fix the connection with the positive copper body; the negative body 200 is used to fix the connection with the negative copper body, the positive copper body and the negative copper body are plugged into each other, and the positive body 100 and the negative body 200 are snap-connected; the ends of the positive body 100 and the negative body 200 that are away from each other are respectively connected to the locking assembly 300 to fix the corresponding cable 500, the locking assembly 300 includes a base 310 and a cover 320, the base 310 and the cover 320 are snap-connected, and the cable 500 is fixed between the base 310 and the cover 320; wherein, the positive body 100 and the negative body 200 are connected as a whole to form a flat structure, and the locking assembly 300 is also a flat structure.

[0036] The technical solution provides a photovoltaic connector, which is achieved by fixing the positive copper piece 700 to the positive body 100, fixing the negative copper piece to the negative body 200, and inserting the positive copper piece 700 and the negative copper piece to achieve electrical connection between the two. The positive body 100 and the negative body 200 are snap-connected to achieve mechanical connection between the positive and negative bodies 200. The locking assembly 300 is provided to fix the cable 500 to the positive body 100 or the negative body 200, and the cable 500 is limited while the copper piece is electrically connected to the cable 500, thereby improving the reliability of the photovoltaic connector. In the present application, the base 310 and the cover 320 are connected by snap-fitting so that the positive electrode body 100 and the negative electrode body 200 can be connected as a whole and set as a flat structure, and the locking assembly 300 can be set as a flat structure, which is beneficial to reduce the size of the photovoltaic connector in the thickness direction, so that the thickness of the photovoltaic connector is not higher than the height of the protruding part of the frame relative to the back plate, thereby effectively reducing the risk of damage to the photovoltaic components and photovoltaic connectors during transportation.

[0037] It can be understood that the flat structure means that the overall dimension of the connector in the thickness direction is smaller than its dimensions in the width and length directions.

[0038] As shown in FIG. 1 and FIG. 2 , it can be understood that, in one embodiment, two pairs of two buckles 120 are provided on the positive body 100, and two oppositely arranged sockets 210 are provided on the negative body 200, and the buckles 120 are engaged with the sockets 210. By providing two oppositely arranged buckles 120 on the positive body 100 and two oppositely arranged sockets 210 on the negative body 200, the positive body 100 and the negative body 200 are engaged. In addition, a sealing ring 600 is sleeved on the positive copper piece 700 to improve the sealing performance of the photovoltaic connector.

[0039] Specifically, the plug buckle 120 has an extension arm and a plug-in protrusion, the plug-in protrusion is fixedly connected to the end of the extension arm, and two plug buckles 120 are arranged at intervals. A receiving cavity is provided on the negative electrode body 200, and two opposite side walls of the receiving cavity are provided with a plug hole 210. The plug-in protrusion and the extension arm are extended into the receiving cavity together, and the plug-in protrusion is clamped in the plug hole 210. In this way, the mutual limitation of the positive electrode body 100 and the negative electrode body 200 is achieved.

[0040] As shown in FIG1 , the positive copper piece 700 is arranged between the two buckles 120, and the negative copper piece is arranged in the accommodating cavity. A port is arranged on the negative copper piece. When the positive body 100 needs to be connected with the negative body 200, the buckle 120 is extended into the accommodating cavity, and the positive copper piece 700 is just inserted into the port of the negative copper piece to realize the electrical connection between the two. The plug-in protrusion on the buckle 120 is engaged with the socket 210 to realize the mechanical connection between the positive and negative body 200.

[0041] As shown in FIG3 , in some embodiments, a first wire-passing groove is configured on the base 310, and a second wire-passing groove 321 is provided on the cover 320. The first wire-passing groove and the second wire-passing groove enclose and define a wire-passing channel for the cable 500 to pass through. In this way, the assembly formed after the base 310 and the cover 320 are connected has a wire-passing channel for the cable 500 to pass through, and the first wire-passing groove is configured on the base 310, and the second wire-passing groove 321 is configured on the cover 320. When the cable 500 is arranged in the lower passage, the base 310 and the cover 320 can be fixedly connected to press the cable 500 in the wire-passing channel, thereby improving the reliability of the connection between the cable 500 and the positive electrode body 100 or the negative electrode body 200.

[0042] As shown in Figure 3, in some embodiments, in the base 310 and the cover 320, one of them has two opposite side groove walls respectively provided with snap holes 322, and the other of them has two pairs of side groove walls respectively provided with snap-in protrusions 311, and the snap-in protrusions 311 are buckled into the snap holes 322.

[0043] As shown in FIG3 , in this embodiment, there is no restriction on whether the clamping hole 322 and the clamping protrusion 311 are arranged on the base 310 or the cover 320, as long as the clamping connection between the two can be achieved by setting the clamping hole 322 and the clamping protrusion 311. For example, in some embodiments, the clamping protrusion 311 can be arranged on the side groove wall of the base 310, and the clamping hole 322 can be arranged on the side groove wall of the cover 320, and the clamping protrusion 311 and the clamping hole 322 are clamped to achieve the position limiting of the two. In other embodiments, the clamping hole 322 can be arranged on the side groove wall of the base 310, and the clamping protrusion 311 can be arranged on the side groove wall of the cover 320, and the mutual position limiting of the two can be achieved by the clamping of the clamping protrusion 311 and the clamping hole 322.

[0044] As shown in Fig. 3, further, two spaced-apart clamping protrusions 311 are respectively provided on the outer sides of two opposite side groove walls of the base 310, and two spaced-apart clamping holes 322 are respectively provided on the two opposite side groove walls of the cover 320, and the clamping protrusions 311 correspond to and buckle with the clamping holes 322. By providing two spaced-apart clamping protrusions 311 on the outer sides of each side groove wall of the base 310 and providing two corresponding clamping holes 322 on the cover 320, the contact area between the clamping protrusions 311 and the clamping holes 322 can be increased while ensuring the structural strength, thereby improving the reliability of the connection between the base 310 and the cover 320.

[0045] Specifically, the side groove wall of the base 310 is arranged as a stepped structure, and the thickness of the end facing the cover 320 is less than the thickness of the end away from the cover 320, so that a step surface is provided on the side wall of the groove. The snap-in protrusion 311 is arranged on the side wall with a smaller thickness. Correspondingly, a receiving groove for accommodating the side wall with a smaller thickness in the base 310 is arranged on the inner side wall of the second wire groove of the cover 320. When the snap-in protrusion 311 is snapped with the snap hole 322, the end face of the cover 320 just fits with the step surface. In this way, after the base 310 and the cover 320 are connected, the parts where the sides of the cover 320 and the base 310 are in contact with each other are just flush, thereby making the photovoltaic connector more beautiful.

[0046] It should be noted that, in the present embodiment, the width of the clamping protrusion 311 disposed on the base 310 close to the positive body 100 or the negative body 200 is between 2-4mm, and the width of the clamping protrusion 311 away from the positive body 100 or the negative body 200 is between 4-6mm. Correspondingly, the width of the clamping hole 322 disposed on the cover 320 close to the positive body 100 or the negative body 200 is between 2-4mm, and the width of the clamping hole 322 away from the positive body 100 or the negative body 200 is between 4-6mm. After the locking assembly 300 is connected to the positive and negative bodies 200, the overall height of the connector is between 12-15mm and the width is between 15-18mm. In the present embodiment, the base 310 and the cover 320 are made of modified polyphenylene ether and are integrally injection molded by a mold.

[0047] As shown in FIG3 , in some embodiments, the clamping protrusion 311 is disposed at one end of the side groove wall of the base 310 facing the cover 320; the clamping hole 322 is disposed at the position where the upper side groove wall and the groove bottom wall of the cover 320 are connected. This arrangement ensures that after the clamping protrusion 311 is buckled into the clamping hole 322, the clamping protrusion 311 will not be exposed on the side of the cover 320, thereby making the appearance of the photovoltaic connector more beautiful, and there will be no protrusion on the side of the photovoltaic connector, which is conducive to reducing the risk of damage to the photovoltaic module and the photovoltaic connector during transportation.

[0048] As shown in Figure 3, in some embodiments, the locking protrusion 311 includes a guide surface 3111 and a limiting surface 3112, the guide surface 3111 intersects with the end surface of the side groove wall facing the cover cover 320, and the distance between the guide surface 3111 and the outer side surface of the side groove wall gradually increases from the end facing the cover cover 320 to the end away from the cover cover 320; the limiting surface 3112 intersects with the outer side surface of the side groove wall and the guide surface 3111, the limiting surface 3112 is perpendicular to the outer side surface of the side groove wall, and the limiting surface 3112 and the bottom wall of the locking hole 322 resist and limit each other.

[0049] By setting the guide surface 3111 in the form of an inclined surface as described above, when the clamping protrusion 311 is connected to the clamping hole 322, the guide surface 3111 is used for guidance, so that when the cover 320 is connected to the base 310, the operation is convenient and the effort is saved. By setting the limiting surface 3112 in a form perpendicular to the outer side surface of the side groove wall, when the clamping protrusion 311 is buckled into the clamping hole 322, the contact area between the clamping protrusion 311 and the limiting surface 3112 can be increased, thereby improving the reliability of the clamping of the two.

[0050] As shown in Figure 3, in some embodiments, a limiting groove 110 is provided at the ends of the positive electrode body 100 and the negative electrode body 200 that are away from each other, and a limiting protrusion is provided on the inner wall surface of the first passing line groove and the second passing line groove 321, and the limiting protrusion is matched with the limiting groove 110 to limit the cover 320 and the base 310 in the axial direction of the positive electrode body 100 or the negative electrode body 200.

[0051] By setting a limiting groove 110 at the ends of the positive electrode body 100 and the negative electrode body 200 that are away from each other, setting a limiting protrusion on the cover 320 and the base 310, and clamping the limiting protrusion in the limiting groove 110, the base 310 and the cover 320 can be axially limited, thereby improving the reliability of the connection between the base 310 and the cover 320 and the positive electrode body 100 or the negative electrode body 200.

[0052] Specifically, the limiting groove 110 is an annular groove, and the limiting protrusions on the base 310 and the cover 320 are also an annular limiting protrusion when enclosed.

[0053] As shown in Fig. 3, in some embodiments, the photovoltaic connector further includes a protective sleeve 400, which is sleeved on the cable 500, and one end of the protective sleeve 400 is snap-connected with the positive electrode body 100 or the negative electrode body 200. The protective sleeve 400 is used to protect the cable 500, and the protective sleeve 400 is snap-connected with the positive electrode body 100 or the negative electrode body 200, which has the advantages of simple structure and easy connection.

[0054] An embodiment of the utility model further provides a photovoltaic system, which includes the photovoltaic connector as described above. The photovoltaic connector as described above is applied in the photovoltaic system, and the base 310 and the cover 320 are connected by snaps, so that the positive electrode body 100 and the negative electrode body 200 are connected as a whole and set to a flat structure, and the locking assembly 300 is set to a flat structure, so as to reduce the size of the photovoltaic connector in the thickness direction, so as to make the thickness of the photovoltaic connector not higher than the height of the protruding part of the frame relative to the back plate, so as to effectively reduce the risk of damage to the photovoltaic assembly and the photovoltaic connector during transportation.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0056] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A photovoltaic connector, characterized in that: The photovoltaic connector comprises: The positive electrode body is used to fix and connect the positive electrode copper body; The negative electrode body is used to fix and connect the negative electrode copper body, the positive electrode copper body is inserted into the negative electrode copper body, and the positive electrode body and the negative electrode body are snap-connected; A locking assembly, the ends of the positive electrode body and the negative electrode body that are away from each other are respectively connected to the locking assembly to fix the corresponding cables, the locking assembly includes a base and a cover, the base and the cover are snap-connected, and the cable is fixed between the base and the cover; The positive electrode body and the negative electrode body are connected to form a flat structure, and the locking assembly is also a flat structure.

2. The photovoltaic connector according to claim 1, characterized in that: The base is provided with a first wire passing groove, the cover is provided with a second wire passing groove, and the first wire passing groove and the second wire passing groove together define a wire passing channel for the cable to pass through.

3. The photovoltaic connector according to claim 2, characterized in that: In the base and the cover, two opposite side groove walls of one are respectively provided with clamping holes, and two pairs of side groove walls of the other are respectively provided with clamping protrusions, and the clamping protrusions are buckled in the clamping holes.

4. The photovoltaic connector according to claim 3, characterized in that: Two spaced apart clamping protrusions are respectively arranged on the outer sides of the two opposite side groove walls of the base, and two spaced apart clamping holes are respectively arranged on the two opposite side groove walls of the cover, and the clamping protrusions correspond to and are buckled with the clamping holes.

5. The photovoltaic connector according to claim 4, characterized in that: The clamping protrusion is arranged on one end of the side groove wall of the base facing the cover; The clamping hole is arranged at a position where the side groove wall and the groove bottom wall are connected on the cover.

6. The photovoltaic connector according to claim 3, characterized in that: The clamping protrusion comprises: A guide surface, wherein the guide surface intersects with an end surface of the side groove wall facing the cover, and a distance between the guide surface and an outer side surface of the side groove wall gradually increases from an end facing the cover to an end away from the cover; A limiting surface, wherein the limiting surface intersects with the outer side surface of the side groove wall and the guide surface, the limiting surface is perpendicular to the outer side surface of the side groove wall, and the limiting surface and the bottom wall of the clamping hole mutually resist and limit each other.

7. The photovoltaic connector according to any one of claims 2 to 6, characterized in that: Limiting grooves are provided at the ends of the positive electrode body and the negative electrode body that are away from each other, and limiting protrusions are provided on the inner wall surfaces of the first passing line groove and the second passing line groove. The limiting protrusions are matched with the limiting grooves to limit the cover and the base in the axial direction of the positive electrode body or the negative electrode body.

8. The photovoltaic connector according to any one of claims 2 to 6, characterized in that: The photovoltaic connector also includes: A protective sleeve is sleeved on the cable, and one end of the protective sleeve is snap-connected with the positive electrode body or the negative electrode body.

9. The photovoltaic connector according to any one of claims 2 to 6, characterized in that: The positive electrode body is provided with two insert buckles arranged at intervals, and the negative electrode body is provided with two insert holes arranged oppositely, and the insert buckles are engaged with the insert holes.

10. A photovoltaic system, characterized in that: The photovoltaic system comprises the photovoltaic connector according to any one of claims 1 to 9.

Images