CN219018771U - Photovoltaic connector and photovoltaic junction box - Google Patents

Abstract

The utility model provides a photovoltaic connector and a photovoltaic junction box, wherein the photovoltaic connector comprises a box body and a cover body, and the box body comprises a containing cavity, a lower conductive cutting piece arranged in the containing cavity and a metal terminal connected with the lower conductive cutting piece; the cover body is pressed on the box body, an upper conductive cutting piece is fixed in the cover body, and the upper conductive cutting piece corresponds to the lower conductive cutting piece up and down to clamp and electrically conduct a cable. Through above-mentioned photovoltaic connector's structure for go up electrically conductive cutting member and electrically conductive cutting member electric connection down, and cut the insulating layer of line cable along its circumference simultaneously, increase the area of contact with the cable core, do not utilize professional instrument, can realize photovoltaic connector or photovoltaic terminal box and cable and form good electric connection.

Description

Photovoltaic connector and photovoltaic junction box

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic connector and a photovoltaic junction box.

Background

The photovoltaic junction box is an important component of the photovoltaic module, and is electrically connected with the box body through a cable by the photovoltaic connector to play a role in transmitting current; however, as the service life of the photovoltaic module increases, the failure of the photovoltaic connector is more and more, and the photovoltaic connector needs to be replaced on the site of the photovoltaic power station system; in addition, in order to reduce the cost of the photovoltaic module, the photovoltaic module standard cable is relatively short, two ends of the cable need to be connected to the box body and the photovoltaic connector on site respectively, and the cable needs to be replaced or installed on site under the above conditions, but certain limitations exist in replacing or installing the cable on site: the insulating layer of cable is peeled off on site, need use professional wire stripper, and the cable core of cable adopts riveting technology with contact pin or plug bush or terminal box in the copper sheet, need use professional riveting tool, and above scheme has that the specialty requires height, the operation degree of difficulty is big, consume shortcoming such as time length.

In view of the foregoing, there is a need for a new photovoltaic connector and a photovoltaic junction box that solve the above problems.

Disclosure of Invention

The present utility model provides a photovoltaic connector and a photovoltaic junction box to solve the above problems.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the present utility model provides a photovoltaic connector comprising:

the box body comprises a containing cavity, a lower conductive cutting piece arranged in the containing cavity and a metal terminal connected with the lower conductive cutting piece;

the cover body is pressed on the box body, an upper conductive cutting piece is fixed in the cover body, and the upper conductive cutting piece corresponds to the lower conductive cutting piece up and down to clamp and electrically conduct a cable.

Further, one end of the metal terminal is provided with a welding end face, and the welding end face is perpendicular to the length direction of the metal terminal and is welded with the lower conductive cutting piece.

Further, an upper groove on the upper side of the clamping cable is formed in the upper conductive cutting piece, a lower groove on the lower side of the clamping cable is formed in the lower conductive cutting piece, and the upper groove and the lower groove are correspondingly arranged up and down.

Further, the upper conductive cutting piece and the lower conductive cutting piece comprise a connecting part and cutting parts extending laterally at two ends of the connecting part, the upper groove or the lower groove is formed in the cutting parts, and the metal terminals are welded and connected with the cutting parts.

Further, the box body and the cover body are both provided with a fixing structure for fixing the upper conductive cutting piece or the lower conductive cutting piece.

Further, the lid includes the roof, encloses the curb plate of locating the roof all around and extending towards the box body, the curb plate includes a pair of first curb plate and a pair of second curb plate that set up relatively, the lid pressfitting in on the box body, first curb plate is located the outside of box body, and the second curb plate is located the constant head tank of box body, and the second curb plate has the groove of stepping down of the lateral wall of acceping the box body.

Further, the cover body further comprises a containing groove arranged at the bottom of the abdication groove and a sealing block which is partially positioned in the containing groove and used for being abutted against the side wall of the box body.

Further, a stop part and a clamping part which are mutually fixed by stopping are arranged between the box body and the cover body, the stop part comprises a first stop part and a second stop part which are arranged up and down, when the cover body and the box body are in a pre-pressing state, the clamping part is stopped on the first stop part, the cover body and the box body are in a pressing state, and the clamping part is stopped on the second stop part.

Further, the first stop part is provided with a cambered surface-shaped guide surface.

The present utility model also provides a photovoltaic junction box comprising:

the box base body is internally provided with a lower conductive cutting piece, a metal substrate welded with the lower conductive cutting piece and a bypass diode welded on the metal substrate, and the upper end of the lower conductive cutting piece is provided with a lower groove;

the upper conductive cutting piece is arranged at the lower part of the cover base body, and an upper groove corresponding to the lower groove is arranged at the lower end of the upper conductive cutting piece;

the cable extends into the box base body and is clamped between the upper conductive cutting piece and the lower conductive cutting piece, and the upper conductive cutting piece and the lower conductive cutting piece cut through an insulating layer of the cable so as to be electrically connected with the cable.

Compared with the prior art, the photovoltaic connector has the beneficial effects that: according to the photovoltaic connector, through the arrangement of the upper conductive cutting piece and the lower conductive cutting piece which are matched with each other, not only is the upper conductive cutting piece and the lower conductive cutting piece electrically connected, but also the insulating layer of the cable along the circumferential direction of the cable is cut, so that the contact area of the photovoltaic connector and the cable core is increased, the photovoltaic connector is suitable for the operation of installing the cable or replacing the photovoltaic connector on the spot of a photovoltaic system, and the photovoltaic connector can realize good electrical connection between the photovoltaic connector or the photovoltaic junction box and the cable without using special tools.

Drawings

Fig. 1 is a schematic perspective view of a pre-press-fit state of a photovoltaic connector according to an embodiment of the present utility model.

Fig. 2 is a schematic perspective view of the case in fig. 1.

Fig. 3 is an enlarged view of a partial structure at a in fig. 2.

Fig. 4 is a schematic perspective view of another angle of the cover in fig. 1.

Fig. 5 is a schematic perspective view of the lower conductive cutting member (upper conductive cutting member) in fig. 1.

Fig. 6 is a cross-sectional view taken along A-A of fig. 1.

Fig. 7 is a cross-sectional view of fig. 1 taken along the direction B-B.

Fig. 8 is a schematic perspective view of the photovoltaic connector in the press-fit state in the embodiment of fig. 1.

Fig. 9 is a cross-sectional view of fig. 8 taken along the direction C-C.

Fig. 10 is a sectional view of fig. 8 taken along the direction D-D.

Fig. 11 is a schematic view of the structure of the photovoltaic junction box body according to an embodiment of the photovoltaic junction box of the present utility model.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the orientation or positional relationship indicated in the present utility model is based on the orientation or positional relationship shown in the auxiliary drawings, which is merely for simplifying the description of the present utility model, and does not indicate or imply that the device must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present utility model.

In the various illustrations of the utility model, some dimensions of structures or portions may be exaggerated relative to other structural portions for convenience of illustration, and thus serve only to illustrate the basic structure of the inventive subject matter.

The utility model provides a photovoltaic connector 10, as shown in fig. 1 to 10, for electrically connecting a cable 20, wherein the photovoltaic connector 10 comprises a box body 11 and a cover body 12, the box body 11 comprises a containing cavity 110, a lower conductive cutting member 131 arranged in the containing cavity 110, and a metal terminal 17 connected with the lower conductive cutting member 131; the cover 12 is pressed onto the case 11, and an upper conductive cutting member 132 is fixed in the cover 12, and the upper conductive cutting member 132 and the lower conductive cutting member 131 vertically correspond to each other to clamp and electrically conduct a cable 20.

According to the photovoltaic connector 10, through the arrangement of the upper conductive cutting piece 131 and the lower conductive cutting piece 132 which are mutually corresponding, the upper conductive cutting piece 132 is electrically connected with the lower conductive cutting piece 131 in a butt joint mode, meanwhile, the cable 20 is cut into the insulating layer along the circumferential direction of the cable, the contact area of the photovoltaic connector 10 and the cable core is increased, and further good electrical connection between the metal end 17 and the cable core is achieved.

The extending direction of the metal terminals 17 is defined to be the same as the mounting direction of the cable 20 in the photovoltaic connector of the present utility model.

As shown in fig. 2, the box 11 includes a bottom wall 111, a side wall 112 surrounding the bottom wall 111 and extending toward the cover 12, and a positioning groove 113 is provided on the box 11 in the extending direction of the metal terminal 17, and when the cover 12 and the box 11 are press-fitted, the side plate of the cover 12 extends into the positioning groove 113, so as to realize quick positioning and mounting of the cover 12, and improve the mounting efficiency of the photovoltaic connector 10.

Wherein, a lower fixing groove 114 recessed downward is provided at a position corresponding to the lower groove 135 away from the side wall of the metal terminal 17, so as to provide a space for the cable 20 to extend into the accommodating cavity 110.

As shown in fig. 4, the cover 12 includes a top plate 121, a pair of first side plates 123 and a pair of second side plates 124 disposed at opposite side ends of the top plate 121, where the first side plates 123 and the second side plates 124 extend toward the box 11, and when the cover 12 and the box 11 are in a pressed state, the first side plates 123 are located at the outer sides of the box 11, and the end portions of the second side plates 124 have a relief groove 125 for accommodating the side walls 112, so that the second side plates 124 are located in the positioning grooves 113 of the box 11, so as to realize the mutual assembly of the box 11 and the cover 12.

As shown in fig. 4, the cover 12 further includes a sealing block 127 disposed in the relief groove 125, and when the case 11 and the cover 12 are press-fitted, the sealing block 127 abuts between the relief groove 125 and the side wall 112, so as to improve the sealing performance of the photovoltaic connector 10.

Preferably, as shown in fig. 4, the cover 12 further includes a receiving groove 126 disposed at the bottom of the relief groove 125, and a part of the sealing block 127 is disposed in the receiving groove 126 to limit the sealing block 127, so as to prevent the sealing block 127 from being squeezed out of the relief groove 125 when the cover 11 and the box 12 are mated, thereby further improving the sealing performance of the photovoltaic connector 10.

In this embodiment, the second side plate 124 is provided with an upper fixing groove 128 corresponding to the lower fixing groove 114, and the upper fixing groove 128 and the lower fixing groove 114 form a fixing hole (not shown) through which the cable 20 passes.

As a preferred embodiment of the photovoltaic connector 10 of the present utility model, as shown in fig. 7 and 10, a stop portion 15 and a clamping portion 16 are disposed between the case 11 and the cover 12, so as to achieve a fixed fit between the case 11 and the cover 12.

Specifically, the clamping portion 16 is disposed on an inner wall surface of the side plate 122, the stop portion 15 is disposed on an outer wall surface of the side wall 112, the stop portion 15 includes a first stop portion 151 and a second stop portion 152 disposed up and down, when the case 11 and the cover 12 are in a pre-press state, the clamping portion 16 is stopped on the first stop portion 151, when the case 11 and the cover 12 are in an installation state, the clamping portion 16 is clamped on the second stop portion 152.

It will be appreciated that the distance between the first stop 151 and the second stop 152 is no greater than twice the thickness of the insulation of the cable 20 to be cut, so that the case 11 and the cover 12 are in a pressed state, and the upper conductive cutting member 132 and the lower conductive cutting member 131 just cut through the upper two insulation layers to be in contact with the cable core.

Preferably, the clamping portion 16 includes a first clamping portion 161 and a second clamping portion 162 that are disposed up and down, and an external distance between the first clamping portion 161 and the second clamping portion 162 is not greater than a distance between the first stopping portion 151 and the second stopping portion 152, so that when the box 11 and the cover 12 are in a pressed state, the first clamping portion 161 and the second clamping portion 162 are simultaneously located between the first stopping portion 151 and the second stopping portion 152, so as to increase a fixing point and a fixing area of the box 11 and the cover 12 that are mutually matched, increase a sealing path between the box 11 and the cover 12, and improve structural strength and sealing performance of the photovoltaic connector 10.

Preferably, the first stopping portion 151 is provided with a guiding surface 153 having a cambered surface shape, so as to facilitate the downward movement of the cover 12.

In this embodiment, the side wall 112 is provided with two sets of stop portions 15 along the extending direction of the metal terminal 17, and each set of stop portions 15 is provided with a pair of stop portions 15 at intervals, so that the stress between the box body 11 and the cover body 12 is uniform, so as to improve the bonding strength of the box body 11 and the cover body 12.

As shown in fig. 6 and 9, the metal terminal 17 has a circular tube shape, one end of the circular tube shape is provided with a welding end face 171, the welding end face 171 is perpendicular to the extending direction of the metal terminal 17 and is welded to the lower conductive cutting member 131, when the upper conductive cutting member 132 and the lower conductive cutting member 131 are in butt contact, the upper conductive cutting member 132 is electrically connected with the metal terminal 17, so that the circumference of the cable core is electrically connected with the metal terminal 17 through the upper conductive cutting member 132 and the lower conductive cutting member 131 at the same time, so that the metal terminal 17 and the cable core form good electrical contact, and meanwhile, the bonding strength of the photovoltaic connector 10 and the cable 20 is improved.

As shown in fig. 4 to 10, the upper conductive cutting member 132 is provided with an upper groove 136 on the upper side of the cable 20, the lower conductive cutting member 131 is provided with a lower groove 135 on the lower side of the cable 20, the upper groove 136 and the lower groove 135 are provided with mounting holes (not shown) for the cable core to pass through, and the inner diameter of the mounting holes is smaller than that of the fixing holes, so as to fix the cable 20 together with the fixing holes.

As shown in fig. 5, each of the upper conductive cutting member 132 and the lower conductive cutting member 131 includes a connection portion 133, and cutting portions 134 laterally extending from both ends of the connection portion 133, and the upper groove 136 or the lower groove 135 is provided on the cutting portions 134. That is, in the extending direction of the metal terminal 17, two cutting portions 134 are provided, so as to increase the cutting points of the cutting portions 134 for cutting the cable 20, thereby avoiding the situation that one cutting portion 134 cannot completely cut the insulating layer, and the two cutting portions 134 play a role in double protection, so that the metal terminal 17 and the cable core form good electrical connection.

In this embodiment, the upper conductive cutting member 132 and the lower conductive cutting member 131 are made of materials having good conductivity and rigidity, such as beryllium, copper, etc. The end of the cutting portion 134 remote from the connecting portion 133 is thinner, forming a blade to cut the cable 20.

Further, the case 11 and the cover 12 are provided with a fixing structure 14 for fixing the upper conductive cutting member 132 or the lower conductive cutting member 131, so as to fix the upper conductive cutting member 132 on the cover 12, and fix the lower conductive cutting member 131 in the case 11.

As another preferred embodiment of the photovoltaic connector 10 of the present utility model, as shown in fig. 2 and 4, the fixing structure 14 is located on the top plate 121 or the bottom wall 111, in this embodiment, the dimension of the connecting portion 133 along the radial direction of the metal terminal 17 is smaller than the dimension of the cutting portion 134, so as to provide a space for fixing the cutting portion 134 to the fixing structure 14, that is, the cutting portion 134 is fixed to the fixing structure 14 near two ends of the connecting portion 133.

As another preferred embodiment of the photovoltaic connector 10 of the present utility model, the fixing structure 14 is located on the side wall 112 or the side plate 122, and the dimension of the connecting portion 133 along the radial direction of the metal terminal 17 is larger than that of the cutting portion 134, so as to provide a space for fixing the cutting portion 134 to the fixing structure 14, that is, the cutting portion 134 is fixed to the fixing structure 14 along two ends of the radial direction of the cable hole.

The utility model also provides a photovoltaic junction box 30, as shown in fig. 11, the junction box 30 comprises a box base 31, a cover base (not shown) and a cable (not shown), wherein a lower conductive cutting member 131 and a metal substrate 33 welded with the lower conductive cutting member 131 are arranged in the box base 31, and a lower groove 135 is arranged at the upper end of the lower conductive cutting member 131; the cover base member lower part is equipped with the last electrically conductive cutting member 132 that corresponds with lower electrically conductive cutting member 131, the lower extreme of going up electrically conductive cutting member 132 is equipped with the last recess 136 that corresponds with lower recess 135, the cable extend into in the box base member 31 and the centre gripping in go up electrically conductive cutting member 132 and lower electrically conductive cutting member 131 between, go up electrically conductive cutting member 132 and lower electrically conductive cutting member 131 and cut the insulating layer of cable in order to be connected with the cable electricity.

When the case base 31 and the cover base are in a press-fit state, the upper conductive cutting member 132 and the lower conductive cutting member 131 are in butt contact and cut the insulating layer of the cable to be in contact with the cable core of the cable. Preferably, the metal substrate 33 is used for soldering a bypass diode (not shown).

The photovoltaic junction box 30 can be used for determining the length of the cable according to the distance between two adjacent photovoltaic modules on the photovoltaic system installation site, and then installing the cable on the photovoltaic junction box 30 so as to save the using amount of the cable. Therefore, the utility model can be applied to not only the photovoltaic connector but also the photovoltaic junction box.

Further, the upper conductive cutting member 132 and the lower conductive cutting member 131 each include a connecting portion 133, and a cutting portion 134 extending laterally from two ends of the connecting portion 133, the upper groove 136 or the lower groove 135 is disposed on the cutting portion 134, the metal substrate 33 is welded to the cutting portion 134, and the structure and function of the upper conductive cutting member 132 and the lower conductive cutting member 131 in the junction box 30 are the same as those of the above-mentioned photovoltaic connector 10, which are not repeated.

In summary, according to the photovoltaic connector 10 of the present utility model, through the arrangement of the upper conductive cutting member 132 and the lower conductive cutting member 131 that are abutted to each other, when the upper conductive cutting member 132 is abutted to the lower conductive cutting member 131, the insulation layer of the cable 20 along the circumferential direction thereof is completely cut, so as to increase the contact area between the photovoltaic connector 10 and the cable core, and simultaneously, the upper conductive cutting member 132 is electrically connected with the lower conductive cutting member 131 when being abutted to each other, so as to achieve good electrical connection between the metal terminal 17 and the cable core.

It should be understood that although the present disclosure describes embodiments in terms of examples, not every embodiment is provided with a single embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and is not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. A photovoltaic connector, the photovoltaic connector comprising:

the box body comprises a containing cavity, a lower conductive cutting piece arranged in the containing cavity and a metal terminal connected with the lower conductive cutting piece;

the cover body is pressed on the box body, an upper conductive cutting piece is fixed in the cover body, and the upper conductive cutting piece corresponds to the lower conductive cutting piece up and down to clamp and electrically conduct a cable.

2. The photovoltaic connector of claim 1, wherein the metal terminal is tubular and has a welding end surface at one end, the welding end surface being perpendicular to the length direction of the metal terminal and being welded to the lower conductive cutting member.

3. The photovoltaic connector of claim 1, wherein the upper conductive cutting member is provided with an upper groove on the upper side of the clamping cable, the lower conductive cutting member is provided with a lower groove on the lower side of the clamping cable, and the upper groove and the lower groove are arranged correspondingly up and down.

4. The photovoltaic connector of claim 3, wherein the upper conductive cutting member and the lower conductive cutting member each comprise a connecting portion, and cutting portions extending laterally from both ends of the connecting portion, and wherein the upper groove or the lower groove are formed in the cutting portions, and wherein the metal terminals are welded to the cutting portions.

5. The photovoltaic connector of any of claims 1 to 4, wherein the housing and cover are each provided with a securing structure for securing the upper or lower conductive cutting member.

6. The photovoltaic connector of any of claims 1-4, wherein the cover comprises a top plate, a pair of first side plates and a pair of second side plates disposed at opposite sides of the top plate, the cover is pressed onto the box, the first side plates are disposed outside the box, the second side plates are disposed in the positioning slots of the box, and the second side plates have relief slots for receiving the side walls of the box.

7. The photovoltaic connector of claim 6, wherein the cover further comprises a receiving groove provided at the bottom of the relief groove, and a sealing block partially positioned in the receiving groove for abutting against a side wall of the case.

8. The photovoltaic connector according to claim 6, wherein a blocking portion and a clamping portion are disposed between the case and the cover, the blocking portion includes a first blocking portion and a second blocking portion disposed up and down, when the case and the cover are in a pre-press state, the clamping portion is blocked on the first blocking portion, the case and the cover are in a press state, and the clamping portion is blocked on the second blocking portion.

9. The photovoltaic connector of claim 8, wherein the first stop portion is provided with a guide surface having a cambered surface shape.

10. A photovoltaic junction box, characterized in that it comprises:

the box base body is internally provided with a lower conductive cutting piece, a metal substrate welded with the lower conductive cutting piece and a bypass diode welded on the metal substrate, and the upper end of the lower conductive cutting piece is provided with a lower groove;

the upper conductive cutting piece is arranged at the lower part of the cover base body, and an upper groove corresponding to the lower groove is arranged at the lower end of the upper conductive cutting piece;

the cable extends into the box base body and is clamped between the upper conductive cutting piece and the lower conductive cutting piece, and the upper conductive cutting piece and the lower conductive cutting piece cut through an insulating layer of the cable so as to be electrically connected with the cable.

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