CN216122345U - Combined photovoltaic junction box and junction box group thereof - Google Patents

Abstract

The utility model relates to a combined photovoltaic junction box which comprises a plurality of photovoltaic junction boxes, wherein each photovoltaic junction box comprises a shell, a containing cavity and a cover body covering the upper part of the containing cavity are arranged in each shell, a conductive module is positioned in each containing cavity, a plurality of positioning support columns for positioning and supporting the conductive module are arranged in each containing cavity, a plurality of bus-bar through grooves for installing bus bars are formed in the bottoms of the conductive modules, and at least one wire locking groove is formed in each of two ends of each shell. The utility model discloses a combined photovoltaic junction box and a junction box group thereof, wherein the combined photovoltaic junction box is convenient to assemble and install and good in assembling stability.

Description

Combined photovoltaic junction box and junction box group thereof

Technical Field

The utility model relates to the field of photovoltaics, in particular to the field of junction boxes, and particularly relates to a combined photovoltaic junction box and a junction box group thereof.

Background

Photovoltaic energy sources dominate among new energy sources in the prior art. In the application of photovoltaic energy, a photovoltaic junction box is an indispensable combined part. For example, in prior patents, patent application No.: CN201620455670.7, patent name: the module split type dual-glass assembly photovoltaic junction box is used; the utility model discloses a split type dual glass assembly of module is with photovoltaic terminal box, including left base, middle base, the right base that mutually independent, be fixed with left cable and right cable on this left base and the right base respectively, left side base inside callipers has left module diode, middle base inside callipers has middle module diode, right base inside callipers has right module diode, this left side module diode, middle module diode, right module diode all include the box body, all be equipped with the diode chip in this box body, two pins of diode chip weld respectively on a pure copper conductive terminal, all be equipped with the protection hole on the pure copper conductive terminal, all peg graft in the protection hole and have the dual glass assembly busbar, dual glass assembly busbar and corresponding pure copper conductive terminal welding.

The prior art embeds the defect that electrically conductive module exists in photovoltaic terminal box: the storage space of the conductive module is limited, the limit stability of the conductive module built in the photovoltaic junction box in the prior art is poor, and the operation of welding and glue pouring sealing is not convenient and stable enough after the conductive module is placed in the photovoltaic junction box.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the defects of the prior art and provides the combined photovoltaic junction box and the junction box group thereof, which are convenient to assemble and install and good in assembly stability.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a modular photovoltaic terminal box, includes a plurality of photovoltaic terminal box, photovoltaic terminal box includes the casing, be provided with in the casing and accomodate the chamber and cover and establish the lid on accomodating chamber upper portion, it is provided with conductive module to accomodate the intracavity location, it is provided with a plurality of location support to accomodate the intracavity conductive module's location support column, conductive module bottom is provided with the groove that converges that a plurality of is used for installing the busbar, the both ends of casing are provided with at least one locking wire groove respectively.

In a preferred embodiment of the present invention, the containing cavity is provided with a plurality of limiting blocks, and the limiting blocks are provided with positioning hooks.

In a preferred embodiment of the present invention, the positioning support column is provided with a bottom support rod for supporting the conductive module, the bottom support rod is provided with a protruding rod, the protruding rod can be embedded into the positioning hole on the conductive module, and the cross-sectional diameter of the protruding rod is smaller than that of the bottom support rod.

In a preferred embodiment of the present invention, a plurality of first limit protrusions for supporting the cover are disposed in the receiving cavity.

In a preferred embodiment of the present invention, a plurality of second limit bumps for limiting and abutting against the conductive module are disposed in the receiving cavity.

In a preferred embodiment of the present invention, the first limit protrusion cooperates with the cover to clamp and position the cover.

In a preferred embodiment of the utility model, the locking wire groove is provided with a locking wire plate for passing and positioning a cable.

In a preferred embodiment of the utility model, the combined photovoltaic junction box group is formed by connecting and combining a plurality of photovoltaic junction boxes, wherein the plurality of photovoltaic junction boxes comprise a first photovoltaic junction box and a second photovoltaic junction box, a first conductive module is embedded in the first photovoltaic junction box in a positioning mode, a second conductive module is embedded in the second photovoltaic junction box in a positioning mode, and the first conductive module is connected with the second conductive module through a cable.

In a preferred embodiment of the utility model, the conductive module suitable for the combined photovoltaic junction box comprises a first conductive module, a second conductive module and a third conductive module, wherein the first conductive module comprises a plurality of groups of positive and negative electrode conductive sheet groups, and adjacent positive and negative electrode conductive sheet groups are electrically connected with a PN junction chip through a jumper; each positive and negative electrode conducting strip group comprises a positive conducting strip and a negative conducting strip which are electrically connected with the PN junction chip through a jumper wire; and one group of the positive conductive sheet and the negative conductive sheet is respectively provided with a longitudinal conductive block I and a longitudinal conductive block II; the outer of the jumper wire and the PN junction chip connected with the positive and negative electrode conducting strip groups is wrapped with an insulating body; and the positive electrode conducting strip and the negative electrode conducting strip are respectively provided with a third vertical conducting block and a fourth vertical conducting block which protrude outwards.

In a preferred embodiment of the utility model, one of the negative conducting strip and the positive conducting strip in the positive and negative conducting strip groups is in an L-shaped structure, and the other conducting strip is embedded in an L-shaped containing cavity of the L-shaped structure at intervals; and the negative conducting strip and the positive conducting strip are not in direct contact.

In a preferred embodiment of the present invention, the positive conductive sheet or the negative conductive sheet is provided with a protruding stopper or/and a positioning groove.

In a preferred embodiment of the present invention, the positive conductive plate and the negative conductive plate are respectively provided with a clamping through groove.

In a preferred embodiment of the present invention, the positive conductive plate and the negative conductive plate are respectively provided with stress-relief through holes.

In a preferred embodiment of the utility model, the positive conductive sheet and the negative conductive sheet are further provided with a waterproof airtight groove or/and an inosculating groove embedded in the insulating body.

In a preferred embodiment of the utility model, a longitudinal conductive block I and a longitudinal conductive block II of a group of positive and negative electrode conductive sheet groups of a conductive module I are connected through a bus bar; the negative conducting strip and the positive conducting strip of the other positive and negative conducting strip group are respectively and directly connected with the negative conducting strip and the positive conducting strip of the positive and negative conducting strip group in the second conducting module in the same polarity through cables; and the longitudinal conductive block III and the longitudinal conductive block IV on the positive and negative electrode conductive sheet group in the conductive module II are connected through a bus belt.

In a preferred embodiment of the present invention, the engaging groove provided on the edge of the negative electrode conducting strip or the positive electrode conducting strip is a wave-shaped engaging groove.

In a preferred embodiment of the utility model, the insulating body at least partially wraps one end of the negative conducting plate or the positive conducting plate, which is in lap joint with the jumper wire and the PN junction chip, and the front surface or/and the back surface of one end of the negative conducting plate or the positive conducting plate, which is wrapped by the insulating body, are/is provided with inwards-concave transverse crossing waterproof airtight grooves.

The beneficial effect of combination formula photovoltaic terminal box group according to above-mentioned embodiment is:

the utility model provides a modular photovoltaic terminal box and terminal box group thereof for solve among the prior art not good, the not enough problem of positional stability of the installation convenience of functional module, and effectively promote stability and the simple operation nature of functional module installation to in the terminal box.

The limiting clamping block is provided with a positioning clamping hook which is clamped and limited with the upper surface of the conductive module. The conductive module is limited and abutted through the positioning support column, and the positioning clamping hook and the positioning support column are combined and positioned to buckle the conductive module. The bus bar is embedded in the bus groove of the photovoltaic junction box and welded.

A plurality of limiting clamping blocks are arranged in the containing cavity, and positioning clamping hooks are arranged on the limiting clamping blocks. The positioning clamping hook can be clamped and limited with the upper surface of the conductive module. The conductive module is limited and abutted against the positioning support column, and the positioning clamping hook and the positioning support column are combined and positioned to buckle the conductive module.

Drawings

The utility model is further explained below with reference to the figures and examples;

fig. 1 is a first schematic view (front plan view) of an assembly structure of a conductive module in a functional module installed in a combined photovoltaic junction box group according to an embodiment of the present invention;

fig. 2 is a second schematic view (back bottom view) of an assembly structure of the conductive module in the functional module installed in the assembled photovoltaic junction box assembly according to the embodiment of the present invention;

fig. 3 is a schematic view showing a third combined structure (a structure view with the first connector and the second connector removed) in which the conductive module in the functional module is installed in the combined photovoltaic junction box group according to the embodiment of the present invention;

FIG. 4 is a schematic diagram of the combined structure of the functional modules according to the embodiment of the present invention (the first conductive module and the conductive module are connected by a cable);

fig. 5 is a schematic top view of a first conductive block according to an embodiment of the present invention (after the first longitudinal conductive block and the second longitudinal conductive block are folded longitudinally);

FIG. 6 is a schematic diagram of a second top view structure of a second conductive block according to an embodiment of the present invention (after the first longitudinal conductive block and the second longitudinal conductive block are folded longitudinally);

fig. 7 is a schematic diagram (front axial view) illustrating an exploded structure of a combined photovoltaic junction box set provided with a functional module according to a third embodiment of the present invention;

fig. 8 is a schematic diagram (back side view) illustrating an exploded structure of a combined photovoltaic junction box set provided with a functional module according to a third embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a first photovoltaic junction box according to a third embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a second photovoltaic junction box according to a third embodiment of the present invention;

fig. 11 is a first schematic diagram (front axial view) illustrating an exploded structure of a modular photovoltaic junction box assembly provided with functional modules according to a fourth embodiment of the present invention;

fig. 12 is a second schematic diagram (back side view) illustrating an exploded structure of a combined photovoltaic junction box set provided with a functional module according to a fourth embodiment of the present invention;

fig. 13 is an exploded view (back side view) of a combined photovoltaic junction box set with functional modules according to a fifth embodiment of the present invention;

in the figure: 1-conducting module I, 11-conducting strip I, 111-longitudinal conducting block I, 12-conducting strip II, 121-longitudinal conducting block II, 13-conducting strip III, 14-conducting strip IV, 15-insulating body, 16-jumper wire, 17-PN junction chip, 181-anastomosis groove, 182-stress-relief groove, 184-card through groove, 185-stress-relief through hole, 186-waterproof airtight groove, 187-positioning groove, 2-cable, 3-conducting module II, 31-conducting strip V, 311-longitudinal conducting block III, 32-conducting strip VI and 321-longitudinal conducting block IV;

4-photovoltaic junction box one, 41-shell one, 412-outside locking line plate one, 413-inside locking line plate one, 42-limiting clamping block, 43-positioning support column, 44-limiting lug one, 45-limiting lug two, 46-confluence groove and 47-installation groove;

5-a second photovoltaic junction box, 512-a second outer side wire locking plate and 513-a second inner side wire locking plate;

61-cover one, 62-cover two, 7-connector one, 71-end cap one, 8-connector two, 81-end cap two.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the utility model in a schematic manner, and thus show only the constituents relevant to the utility model.

Example one

As shown in fig. 1 to 10, a combined photovoltaic junction box includes a first photovoltaic junction box 4, the first photovoltaic junction box 4 includes a first housing 41, and a first housing cavity and a first cover 61 covering the first housing cavity are disposed in the first housing 41. The containing cavity is internally provided with a first conductive module 1 in a positioning mode.

Specifically, the first conductive module 1 comprises a first conductive sheet 11, a second conductive sheet 12, a third conductive sheet 13, a fourth conductive sheet 14, wherein the first conductive sheet 11, the second conductive sheet 12, the third conductive sheet 13 and the fourth conductive sheet 14 are combined into two sets of positive and negative conductive sheet groups arranged transversely in parallel at intervals, and the adjacent positive and negative conductive sheet groups are electrically connected with the PN junction chip 17 through a jumper 16. Each positive and negative electrode conducting strip group comprises a positive electrode conducting strip and a negative electrode conducting strip which are electrically connected with the PN junction chip 17 through a jumper 16, and a pair of conducting strips I11 and a pair of conducting strips II 12 which are arranged at intervals in the positive and negative electrode conducting strip group on the left side are respectively a negative electrode conducting strip and a positive electrode conducting strip; and a pair of conducting strips three 13 and four 14 arranged at intervals in the positive and negative conducting strip group on the right side are respectively a negative conducting strip and a positive conducting strip. And the positive conducting strip and the negative conducting strip of the positive and negative conducting strip group on the left side are respectively vertically provided with a longitudinal conducting block I111 and a longitudinal conducting block II 121, and the longitudinal conducting block I111 and the longitudinal conducting block II 121 are oppositely arranged at intervals. The jumper 16 and the PN junction chip 17 connected with the positive and negative electrode conducting strip groups are wrapped by an insulating body 15.

More specifically, the negative conducting strip and the positive conducting strip in the positive and negative conducting strip groups respectively comprise a connection end I and a mounting end I, the negative conducting strip is of an L-shaped structure, and the positive conducting strips are embedded in an L-shaped containing cavity of the negative conducting strip of the L-shaped structure at intervals; and the negative conducting strip and the positive conducting strip are not in direct contact. Furthermore, a first longitudinal conductive block 111 is vertically arranged on the first mounting end of the negative conductive sheet in the left positive and negative conductive sheet group in the longitudinal direction, a second longitudinal conductive block 121 is vertically arranged on the first mounting end of the positive conductive sheet in the left positive and negative conductive sheet group in the longitudinal direction, and the first longitudinal conductive block 111 and the second longitudinal conductive block 121 are respectively connected with the bus bar. And the connection end I of the negative conducting strip in the positive and negative conducting strip group on the left side is electrically connected with a PN junction chip 17 welded on the connection end I of the positive conducting strip in the positive and negative conducting strip group on the left side through a jumper 16. And the connection end I of the negative conducting strip in the positive and negative conducting strip group on the right side is electrically connected with a PN junction chip 17 welded on the connection end I of the positive conducting strip in the positive and negative conducting strip group on the left side through a jumper 16. And the first installation end of the negative conducting strip in the right positive and negative conducting strip group and the first installation end of the positive conducting strip are respectively electrically connected with the second conducting module 3 through cables 2. And the connection end I of the positive conducting strip of the left positive and negative conducting strip group is electrically connected with a PN junction chip 17 welded on the connection end I of the negative conducting strip of the right positive and negative conducting strip group through a jumper 16. The connection end I of the positive and negative electrode conducting strip group on the left side and the connection end I of the positive and negative electrode conducting strip group on the right side, and the jumper 16 and the PN junction chip 17 which are electrically connected with the connection end I are wrapped and sealed into a whole by the insulating plate body. And a plurality of stress relief through holes 185 and stress relief grooves 182 are respectively formed on the positive electrode conducting strip and the negative electrode conducting strip of the positive and negative electrode conducting strip group on the left side and the positive and negative electrode conducting strip group on the right side. The mounting ends of the positive and negative conductive sheets are also provided with positioning grooves 187 and clamping through grooves 184. The joint end of the positive conducting strip and the joint end of the negative conducting strip are also provided with a waterproof airtight groove 186 embedded in the insulating body 15 and an inosculating groove 181 with a wave-shaped structure. The waterproof airtight groove 186 adopts a plurality of linear structure grooves which are arranged at intervals in parallel, the waterproof airtight groove 186 transversely spans and is embedded into the joint end of the positive conducting plate and the joint end of the negative conducting plate, and the section structure is an airtight path with a square wave structure. And the outer side of the connecting end of the positive and negative electrode conducting strip group on the right side is also provided with a convex limiting block, and the limiting block is embedded into the insulating body 15. The insulating body 15 at least partially wraps one end of the negative conducting plate or the positive conducting plate, which is in lap joint with the jumper 16 and the PN junction chip 17, and the front surface or/and the back surface of one end of the negative conducting plate or the positive conducting plate wrapped by the insulating body 15 are/is provided with inwards-concave transverse crossing waterproof airtight grooves 186. The negative conductive plate and the positive conductive plate are respectively provided with a plurality of positioning holes.

Furthermore, the side structure of the first conductive module 1 is a sunken structure with a concave middle part, that is, one end of the first conductive sheet 11, the third conductive sheet 13 and the fourth conductive sheet 14 of the first conductive module 1, which are positioned at the outer edge of the first conductive module 1, is in a zigzag structure. The side structure of the second conductive module 2 is a sunken structure with a sunken middle part, that is, one end of the fifth conductive sheet 31 and the sixth conductive sheet 32 of the second conductive module 3, which are positioned at the outer edge of the second conductive module 3, is of a zigzag structure. The middle sinking structures of the first conductive module 1 and the second conductive module 3 are convenient to place in the photovoltaic junction box on one hand, and are convenient to improve the installation space in the middle on the other hand. But not limited to, the partially recessed positions of the first conductive module and the second conductive module can be adjusted according to actual conditions. The concave position is located at the position where the first longitudinal conductive block 111 and the second longitudinal conductive block 121 are arranged on the first conductive sheet 11 and the second conductive sheet 12. Namely, two ends of the outer edges of the two ends of the first conducting plate 11 are respectively in a Z-shaped structure and combined into a concave structure.

Specifically, the bottom of the first photovoltaic junction box 4 is provided with a plurality of bus grooves 46 for penetrating through bus bars, and two ends of the first shell 41 are respectively provided with a locking groove. An outer lock line plate I412 is arranged on the lock line groove at one end of the first shell 41, and an inner lock line plate I413 is arranged on the lock line groove at the other end of the first shell 41. A cable 2 penetrates through the outer side wire locking plate I412 and the wire locking groove, two cables 2 which are arranged in parallel at intervals penetrate through the inner side wire locking plate I413 and the wire locking groove, the cables 2 are respectively led in the wire locking grooves at two ends of the shell I41 in order to facilitate positioning and connection, a connector I7 penetrates through the cable 2 at one end of the shell I41, and the connector I7 is in sealing connection with the end cover I71 in a plugging mode. Two cables 2 which are respectively a positive pole and a negative pole are led out from the other end of the first shell 41.

The positioning support column 43 for a plurality of positioning support conductive modules is arranged in the containing cavity, the positioning support column 43 is provided with a bottom support rod, the bottom support rod is provided with a convex rod embedded in a positioning hole in the conductive module, and the diameter of the section of the convex rod is smaller than that of the section of the bottom support rod. A plurality of limiting clamping blocks 42 are arranged in the containing cavity, and positioning clamping hooks are arranged on the limiting clamping blocks 42. The positioning clamping hook can be clamped and limited with the upper surface of the first conductive module 1. The conductive module is limited and abutted against the positioning support column 43, and the positioning clamping hook and the positioning support column 43 are combined, positioned and buckled with the conductive module I1.

The containing cavity is also provided with a plurality of pairs of first limit lugs 44 for supporting and positioning the cover body. The lid inlays to be established and accomodates the intracavity, and the downside of lid and spacing lug 44 support to lean on, and the last side of lid and the buckle block that sets up on accomodating the intracavity side border are spacing. The containing cavity is internally provided with a plurality of limiting lugs 45 which are limited and abutted against the conductive module I1. The inner side of the second limit bump 45 is provided with a leaning bump for positioning and clamping two side walls of the first conductive module 1.

Example two

As shown in fig. 1 to 10, a combined photovoltaic junction box includes a second photovoltaic junction box 5, the second photovoltaic junction box 5 includes a second housing, and a second housing cavity and a second cover 62 covering the second housing cavity are disposed in the second housing. And a second conductive module 3 is positioned in the containing cavity.

Specifically, the second conductive module 3 comprises at least one group of positive and negative conductive sheet groups, each positive and negative conductive sheet group comprises a fifth conductive sheet 31 and a sixth conductive sheet 32, the sixth conductive sheet 32 is a positive conductive sheet with an inverted-L-shaped structure, the fifth conductive sheet 31 is a negative conductive sheet, the positive conductive sheet and the negative conductive sheet respectively comprise a second connecting end and a second mounting end, a third longitudinal conductive block 311 is vertically arranged on the second mounting end of the negative conductive sheet, a fourth longitudinal conductive block 321 is vertically arranged on the second mounting end of the positive conductive sheet, the third longitudinal conductive block 311 and the fourth longitudinal conductive block 321 are oppositely arranged at intervals, and the third longitudinal conductive block 311 and the fourth longitudinal conductive block 321 are respectively welded and connected with the bus bar. The connection end two-way of the positive conducting strip of the second conductive module 3 is electrically connected with the first installation end of the positive conducting strip of the positive and negative conducting strip group on the right side in the first conductive module 1 through a cable 2, and the connection end two-way of the negative conducting strip of the second conductive module 3 is electrically connected with the first installation end of the negative conducting strip of the positive and negative conducting strip group on the right side in the first conductive module 1 through a cable 2. And a plurality of stress relief through holes 185 and stress relief grooves 182 are respectively formed on the positive conducting strip and the negative conducting strip of the positive and negative conducting strip groups in the second conducting module 3. And a clamping through groove 184 is also arranged at the connecting end of the positive conducting plate and the negative conducting plate.

Specifically, the bottom of the second photovoltaic junction box 5 is provided with at least one bus groove 46 for penetrating through the bus bar, and two ends of the second shell are respectively provided with a wire locking groove. And a second outer lock wire plate 512 is arranged on the lock wire groove at one end of the second shell, and a second inner lock wire plate 513 is arranged on the lock wire groove at the other end of the second shell. A cable 2 penetrates through the outer side lock wire plate and the lock wire groove, two cables 2 which are arranged in parallel at intervals penetrate through the inner side lock wire plate two 513 and the lock wire groove, a first connector 7 and a second connector 8 are respectively arranged outside the lock wire grooves for facilitating positioning and connecting two ends of the shell two, and the first end cover 71 and the second end cover 81 are respectively used for plugging and sealing and connecting. The cable 2 at one end of the second shell penetrates through the second connector 8, and the second connector 8 is sealed and connected with the second end cover 81. Two cables 2 which are respectively a positive pole and a negative pole are led out from the other end of the second shell.

The positioning support column 43 for a plurality of positioning support conductive modules is arranged in the containing cavity, the positioning support column 43 is provided with a bottom support rod, the bottom support rod is provided with a convex rod embedded in a positioning hole in the conductive module, and the diameter of the section of the convex rod is smaller than that of the section of the bottom support rod. A plurality of limiting clamping blocks 42 are arranged in the containing cavity, and positioning clamping hooks are arranged on the limiting clamping blocks 42. The positioning clamping hook can be clamped and limited with the upper surface of the first conductive module 1. The conductive module is limited and abutted against the positioning support column 43, and the positioning clamping hook and the positioning support column 43 are combined, positioned and buckled on the conductive module II 3.

The containing cavity is also provided with a plurality of pairs of first limit lugs 44 for supporting and positioning the cover body. The lid inlays to be established and accomodates the intracavity, and the downside of lid and spacing lug 44 support to lean on, and the last side of lid and the buckle block that sets up on accomodating the intracavity side border are spacing. And a plurality of second limiting lugs 45 which are limited and abutted against the second conductive modules 3 are arranged in the accommodating cavity. The inner side of the second limit bump 45 is provided with an abutting bump for positioning and clamping two side walls of the second conductive module 3.

EXAMPLE III

As shown in fig. 1 to 10, a combined photovoltaic junction box group is formed by connecting and combining a plurality of photovoltaic junction boxes, the plurality of photovoltaic junction boxes adopt a first photovoltaic junction box 4 in an embodiment and a second photovoltaic junction box 5 in an embodiment, a first conductive module 1 is embedded in the first photovoltaic junction box 4, and a second conductive module 3 is embedded in the second photovoltaic junction box 5. As shown in fig. 1 to 10, the first conductive module 1 and the second conductive module 3 are connected by a cable 2.

Example four

As shown in fig. 11 and 12, on the basis of the third embodiment, a circle of outer edge is arranged on the periphery of the bottom surfaces of the first casing 41 and the second casing 41 of the first photovoltaic junction box 4 and the second photovoltaic junction box 5.

EXAMPLE five

As shown in fig. 13, on the basis of the first embodiment, a mounting groove 47 is formed in the bottom of the first photovoltaic junction box 4, the mounting groove 47 corresponds to the insulation body 15 on the first conductive module 1, so that the installation and the later-stage glue filling operation are facilitated, and the heat dissipation is facilitated when the insulation body 15 is used.

The working principle is as follows:

by arranging the first longitudinal conductive block 111 and the second longitudinal conductive block 121 on the first conductive module 1, and arranging the third longitudinal conductive block 311 and the fourth longitudinal conductive block 321 on the second conductive module 3 respectively. The convenience and the stability of the bus bar, the first conductive module 1 and the second conductive module 3 during installation and clamping welding are respectively improved. The combined structure of the first conductive module 1 and the second conductive module 3 further improves the diversity of circuit combination between the first conductive module 1 and the second conductive module 3; particularly, the first conducting strip 11, the second conducting strip 12, the third conducting strip 13 and the fourth conducting strip 14 which are arranged in the first conducting module 1 are electrically connected with the PN junction chip 17 through a plurality of groups of jumper wires 16 and then are plastically packaged and combined into a whole through the insulating body 15, so that the stability and the installation convenience are improved. The engaging performance of the positive and negative electrode conducting strip groups and the insulating body 15 can be improved by the stress relief grooves 182 or the stress relief through holes 185 or the limiting blocks arranged on the positive and negative electrode conducting strips in the positive and negative electrode conducting strip groups. The insulating body 15 wraps the wave-shaped matching opening and the waterproof sealing groove 186 which are formed in the positive and negative electrode conducting strip groups, the matching degree of the conducting strips and the insulating body 15 can be improved through the wave-shaped matching opening and the waterproof sealing groove 186, the water vapor path of water vapor entering the insulating body 15 is prolonged, and the air tightness of the functional module is improved.

The integrated conductive module I1 is correspondingly placed in a containing cavity of the photovoltaic junction box I4, a plurality of positioning support columns 43 arranged in the containing cavity are used for positioning and supporting the conductive sheet I11, the conductive sheet II 12, the conductive sheet III 13 and the conductive sheet IV 14 of the conductive module I1, and a positioning clamping hook is arranged on a limiting clamping block 42 and is clamped and limited with the upper surface of the conductive module I1. The first conductive module 1 is limited and abutted by the positioning support column 43, and the positioning clamp hook and the positioning support column 43 are combined to position and buckle the first conductive sheet 11, the second conductive sheet 12, the third conductive sheet 13 and the fourth conductive sheet 14 of the first conductive module 1. And a bus bar welded with the first conducting strip 11 and the second conducting strip 12 and electrically connected with each other is embedded in the bus groove 46 of the first photovoltaic junction box 4. And finally, pouring glue into the photovoltaic junction box I4 provided with the conductive module I1 for sealing.

Two pairs of first limiting lugs 44 for supporting and positioning the first cover body 61 are further arranged in the containing cavity. The first cover body 61 is embedded in the containing cavity, the lower side face of the first cover body 61 abuts against the first limiting lug 44, and the upper side face of the first cover body 61 is limited by a clamping buckle arranged on the inner side edge of the containing cavity. The cable 2 led out from one end of the photovoltaic junction box I4 is connected with external equipment through a connector I7, and the two cables 2 led out from the other end of the photovoltaic junction box I4 are directly led into the second conductive module 3.

The second conductive module 3 combined into a whole is correspondingly placed into a containing cavity of the second photovoltaic junction box 5, the second conductive module 3 is positioned and supported through a plurality of positioning support columns 43 arranged in the containing cavity, and the second conductive module is limited through the clamping of the positioning clamping hooks arranged on the limiting clamping blocks 42 and the upper surface of the second conductive module 3. The positioning support column 43 of the second conductive module 3 is limited and abutted, and the positioning clamping hook and the positioning support column 43 are combined and positioned to buckle the second conductive module 3. And a bus bar welded with the five electric connection conducting strips 31 and the six electric connection conducting strips 32 is embedded in the bus groove 46 of the second photovoltaic junction box 5. And finally, pouring glue into the photovoltaic junction box II 5 provided with the conductive module II 3 for sealing.

Two pairs of first limiting lugs 44 for supporting and positioning the second cover body 62 are further arranged in the accommodating cavity. The second cover body 62 is embedded in the containing cavity, the lower side surface of the second cover body 62 is abutted against the first limiting bump 44, and the upper side surface of the second cover body 62 is clamped and limited with a buckle arranged on the inner side edge of the containing cavity. The cable 2 led out from one end of the photovoltaic junction box II 5 is connected with external equipment through a connector II 8, and the other end of the conductive module II 3 of the photovoltaic junction box II 5 is electrically connected with the two cables 2 of the photovoltaic junction box I4.

In light of the foregoing description of the preferred embodiments of the present invention, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (9)

1. The utility model provides a modular photovoltaic terminal box, includes a plurality of photovoltaic terminal box, photovoltaic terminal box includes the casing, be provided with in the casing and accomodate the chamber and cover and establish the lid on accomodating chamber upper portion, it is provided with conductive module, its characterized in that to accomodate the intracavity location: the storage cavity is internally provided with a plurality of positioning supports for positioning and supporting the conductive module, the bottom of the conductive module is provided with a plurality of confluence through grooves for installing the bus bars, and two ends of the shell are respectively provided with at least one locking line groove.

2. The modular photovoltaic junction box of claim 1, wherein: a plurality of limiting clamping blocks are arranged in the containing cavity, and positioning clamping hooks are arranged on the limiting clamping blocks.

3. The modular photovoltaic junction box of claim 1, wherein: the positioning support column is provided with a bottom support rod used for supporting the conductive module, the bottom support rod is provided with a convex rod, the convex rod can be embedded into the positioning hole in the conductive module, and the section diameter of the convex rod is smaller than that of the bottom support rod.

4. The modular photovoltaic junction box of claim 3, wherein: a plurality of first limiting lugs used for supporting the cover body are arranged in the containing cavity.

5. The modular photovoltaic junction box of claim 4, wherein: and a plurality of limiting lugs II which are limited and abutted against the conductive module are arranged in the accommodating cavity.

6. The modular photovoltaic junction box of claim 4, wherein: the first limiting lug is matched with the cover body to clamp and position the cover body.

7. The modular photovoltaic junction box of claim 1, wherein: and a wire locking plate used for penetrating and positioning a cable is arranged on the wire locking groove.

8. The utility model provides a modular photovoltaic terminal box group which characterized in that: the photovoltaic junction box is formed by connecting and combining a plurality of photovoltaic junction boxes according to any one of claims 1 to 7, wherein the plurality of photovoltaic junction boxes comprise a first photovoltaic junction box and a second photovoltaic junction box, a first conductive module is embedded in the first photovoltaic junction box, a second conductive module is embedded in the second photovoltaic junction box, and the first conductive module is connected with the second conductive module through a cable.

9. A modular photovoltaic terminal box which characterized in that: the conductive module suitable for the combined photovoltaic junction box in claims 1-7 comprises a conductive module I, wherein the conductive module I comprises a plurality of groups of positive and negative electrode conductive sheet groups, and adjacent positive and negative electrode conductive sheet groups are electrically connected with a PN junction chip through a jumper; each positive and negative electrode conducting strip group comprises a positive conducting strip and a negative conducting strip which are electrically connected with the PN junction chip through a jumper wire; and one group of the positive conductive sheet and the negative conductive sheet is respectively provided with a longitudinal conductive block I and a longitudinal conductive block II; the outer of the jumper wire and the PN junction chip connected with the positive and negative electrode conducting strip groups is wrapped with an insulating body; and the positive electrode conducting strip and the negative electrode conducting strip are respectively provided with a third vertical conducting block and a fourth vertical conducting block which protrude outwards.

Images