CN212848432U

CN212848432U - Solar cell module

Info

Publication number: CN212848432U
Application number: CN202021052102.5U
Authority: CN
Inventors: 张准; 陈佳; 王磊
Original assignee: Sunflare Nanjing Energy Technology Co ltd
Current assignee: Sunflare Nanjing Energy Technology Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-03-30
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a solar battery component, which comprises a frame arranged at the periphery of the solar battery component, wherein the solar battery component is embedded into a U-shaped groove of the frame; the solar cell module is sequentially composed of a front film layer, a POE (polyolefin elastomer) film layer and a back plate in the longitudinal direction; the battery module is respectively connected with the front film layer and the back plate through the POE film layer; the solar cell module is subjected to edge sealing through a POE (polyolefin elastomer) adhesive film; the junction box is fixed on a back plate of the solar cell module through glass cement, and the positive pole and the negative pole of the cell module are respectively connected with the junction box through a positive pole bus bar and a negative pole bus bar; one end of the positive bus bar is connected with the positive electrode of the battery module, and the other end of the positive bus bar penetrates through the through hole in the back plate and is fixedly connected with the positive and negative bonding pads of the junction box through welding; one end of the negative bus bar is connected with the negative electrode of the battery module, and the other end of the negative bus bar penetrates through the through hole in the back plate to be fixedly connected with the positive and negative electrode welding pads of the junction box in a welding mode.

Description

Solar cell module

Technical Field

The utility model relates to a solar module belongs to photovoltaic power generation technical field.

Background

Traditional crystalline silicon solar cell module adopts the glass substrate to encapsulate owing to the fragile reason of crystal silicon itself, and this kind of subassembly is easy broken, can not buckle, and weight is big, and the application scene is more single. Compared with glass-based products, the flexible solar cell module has the remarkable advantages that: 1. the product has light weight, and the weight of the same area is only about 30 percent of that of the glass-based component; 2. can be curled and folded, and is resistant to falling and collision. And CIGS thin film solar cells are one of the most potential flexible solar cell modules.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the technical problem to be solved by the utility model is to provide a solar battery assembly, which moves the junction box to the back surface, and simultaneously adopts the POE adhesive film to seal the edge of the solar battery assembly, thereby not only effectively protecting the front film layer and the back plate in the assembly and avoiding the contact between the front film layer and the back plate and the liquid water; and the length of the module is shortened, and the power generation capacity per unit area is enhanced.

The utility model has the following contents: in order to solve the above technical problem, the utility model discloses the technical means who adopts do:

a solar cell module comprises a frame arranged at the periphery of the solar cell module, wherein the solar cell module is embedded into a U-shaped groove of the frame; the solar cell module is sequentially composed of a front film layer, a POE (polyolefin elastomer) film layer and a back plate in the longitudinal direction; the battery module is respectively connected with the front film layer and the back plate through the POE film layer; the solar cell module is subjected to edge sealing through a POE (polyolefin elastomer) adhesive film; the junction box is fixed on a back plate of the solar cell module through glass cement, and the positive pole and the negative pole of the cell module are respectively connected with the junction box through a positive pole bus bar and a negative pole bus bar; one end of the positive bus bar is connected with the positive electrode of the battery module, and the other end of the positive bus bar penetrates through the through hole in the back plate and is fixedly connected with the positive and negative bonding pads of the junction box through welding; one end of the negative bus bar is connected with the negative electrode of the battery module, and the other end of the negative bus bar penetrates through the through hole in the back plate to be fixedly connected with the positive and negative electrode welding pads of the junction box in a welding mode.

The battery module comprises a plurality of battery strings which are connected in series, each battery string is formed by connecting a plurality of battery pieces in series through series welding strips, the series welding strips connect the positive electrode of the last battery piece with the negative electrode of the next adjacent battery piece, bypass diodes are arranged between the adjacent battery pieces in each battery string and between the battery pieces connected through the confluence welding strips in the adjacent battery strings, the distance from the bypass diode between the adjacent battery pieces in each battery string to the top of the battery piece is 65mm, and the distance from the bypass diode between the battery pieces connected through the confluence welding strips in the adjacent battery strings to the bottom of the battery piece is 111 mm; and a high-temperature adhesive tape is arranged between the adjacent battery strings.

Wherein, the thickness of POE glued membrane banding is not more than 300um, and the width of POE glued membrane banding is 15 ~ 30 mm.

The frame further comprises a plurality of reinforcing ribs arranged in parallel, the reinforcing ribs are located below the U-shaped grooves and fixedly connected with the U-shaped grooves, and the reinforcing ribs are fixedly connected with the back plate of the solar cell module through glass cement.

The thickness of the POE adhesive film layer between the battery module and the front film layer is 0.5 mm; the thickness of POE glued membrane layer is 0.5mm between battery module and the backplate.

Wherein the bypass diode is an SBR diode.

Has the advantages that: the solar cell module of the utility model has the advantages that the bypass diode is better contacted with the cell piece and the heat dissipation performance is better by changing the type of the bypass diode and the position of the bypass diode; secondly, the frame is arranged outside the solar cell module, so that the installation convenience of the solar cell module at a required position can be effectively improved; in addition, the edge of the solar cell module is sealed by the POE adhesive film, so that the back plate and the front film layer of the solar cell module can be effectively protected, and liquid water is prevented from contacting the back plate and the front film layer from the side surface; finally, the utility model discloses solar module moves its terminal box to the back, makes the holistic length size of subassembly shorten, and the unit area generated energy reinforcing, and the winding displacement hides behind one's back in the use, reduces the damaged risk of line.

Drawings

Fig. 1 is a rear view of a solar cell module according to the present invention;

FIG. 2 is a cross-sectional view taken along plane A-A of FIG. 1;

fig. 3 is a schematic structural view of a battery module;

fig. 4 is a schematic view of a local structure of the solar cell module edge-sealed by a POE adhesive film;

FIG. 5 is an enlarged view of area a of FIG. 3;

FIG. 6 is an enlarged view of area C of FIG. 3;

FIG. 7 is a schematic view of a bus bar structure;

FIG. 8 is a schematic diagram of adjacent cells connected by series solder strips;

fig. 9 is a schematic diagram illustrating the connection of battery cells in the battery module.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 9, the solar cell module 12 of the present invention, in which the junction box is disposed on the back plate, includes a frame 16 disposed on the periphery of the solar cell module 12, and the solar cell module 12 is embedded in a U-shaped groove 17 of the frame 16; the solar cell module 12 is fixedly arranged at a required position through a frame 16, the frame 16 is made of aluminum, and the thickness of the frame 16 is 20 mm; the solar cell module 12 is longitudinally and sequentially composed of a front film layer 1, a POE (polyolefin elastomer) film layer 3 and a back plate 2; the battery module 4 is respectively connected with the front film layer 1 and the back plate 2 through the POE adhesive film layer 3; the solar cell module 12 is sealed by a POE adhesive film 6; the edge sealing thickness Y of the POE adhesive film 6 is 300um, and the edge sealing width X is 15-30 mm; the junction box 20 is fixed on the back plate 2 of the solar cell module 12 through glass cement, and the anode and the cathode of the cell module 4 are respectively welded with the junction box 20 through an anode bus bar 21 and a cathode bus bar 22; one end of the positive bus bar 21 is connected with the positive electrode of the battery module 4, and the other end of the positive bus bar 21 sequentially penetrates through the POE adhesive film layer 3 and the through holes in the back plate 2 to be fixedly connected with the positive and negative electrode welding pads of the junction box 20 through welding; one end of the negative bus bar 22 is connected with the negative electrode of the battery module 4, and the other end of the negative bus bar 22 sequentially penetrates through the through holes in the POE adhesive film layer 3 and the backboard 2 to be fixedly connected with the positive and negative electrode pads of the junction box 20 through welding. Anodal busbar 21 and negative pole busbar 11 are all fixed on battery piece 8 through insulating tape, and the thickness of busbar is 0.35mm, and the through-hole of busbar tip on POE glued membrane layer 3 and backplate 2 is worn out, and the aperture of through-hole is 0.5 mm. The bus bars are in a zigzag shape, and the junction box 20 is located on the transverse central axis of the solar cell module 12. The electric energy of the battery module 4 is led out of the positive and negative electrodes thereof through the junction box 20 to be used by an external electric device.

The battery module 4 is composed of a plurality of battery strings 7 connected in series, each battery string 7 is formed by connecting a plurality of battery sheets 8 in series through a series welding strip 14, the series welding strip 14 connects the positive electrode of the last battery sheet 8 with the negative electrode of the next battery sheet 8, bypass diodes 10 are arranged between the adjacent battery sheets 7 in each battery string 7 and between the battery sheets 8 connected through a confluence welding strip 9 in the adjacent battery strings 7, the distance G between the bypass diodes 10 between the adjacent battery sheets 8 in each battery string 7 and the top of the battery sheets is 65mm, and the distance H between the bypass diodes 10 between the battery sheets 8 connected through the confluence welding strip 9 in the adjacent battery strings 7 and the bottom of the battery sheets is 111 mm; the high-temperature adhesive tape 11 is arranged between the adjacent battery strings 7, and the high-temperature adhesive tape 11 can well fix the battery strings 7.

The frame structure 16 further comprises a plurality of reinforcing ribs 18 arranged in parallel, the reinforcing ribs 18 are located below the U-shaped grooves 17 and fixedly connected with the U-shaped grooves 17, and the reinforcing ribs 18 are fixedly connected with the back plate 2 of the solar cell module 12 through glass cement 15.

The utility model discloses battery module 4 includes that battery piece, series connection weld area 14 and converge and

weld area

9, and 8 positive poles of the last battery piece of every battery cluster 7 weld through the series connection and take 14 to be connected with the negative pole of adjacent next battery piece 8, and adjacent battery cluster 7 welds through converging and takes 9 to connect. The thickness of the POE adhesive film layer between the battery module 4 and the front film layer 1 is 0.5 mm; the thickness of POE glued membrane layer between battery module 4 and backplate 2 is 0.5 mm. The utility model discloses bypass diode 10 that solar module 12 used is the SBR diode, through setting up bypass diode 10 at the middle part of two battery pieces 8, can increase bypass diode 10 and battery piece 8's area of contact.

Claims

1. A solar cell module, characterized in that: the solar cell module comprises a frame arranged on the periphery of the solar cell module, wherein the solar cell module is embedded into a U-shaped groove of the frame; the solar cell module is sequentially composed of a front film layer, a POE (polyolefin elastomer) film layer and a back plate in the longitudinal direction; the battery module is respectively connected with the front film layer and the back plate through the POE film layer; the solar cell module is subjected to edge sealing through a POE (polyolefin elastomer) adhesive film; the junction box is fixed on a back plate of the solar cell module through glass cement, and the positive pole and the negative pole of the cell module are respectively connected with the junction box through a positive pole bus bar and a negative pole bus bar; one end of the positive bus bar is connected with the positive electrode of the battery module, and the other end of the positive bus bar penetrates through the through hole in the back plate and is fixedly connected with the positive and negative bonding pads of the junction box through welding; one end of the negative bus bar is connected with the negative electrode of the battery module, and the other end of the negative bus bar penetrates through the through hole in the back plate to be fixedly connected with the positive and negative electrode welding pads of the junction box in a welding mode.

2. The solar cell module of claim 1, wherein: the thickness of POE glued membrane banding is not more than 300um, and the width of POE glued membrane banding is 15 ~ 30 mm.

3. The solar cell module of claim 1, wherein: the frame still includes many parallel arrangement's strengthening rib, the strengthening rib is located U type groove below and with U type groove fixed connection, the strengthening rib passes through glass and glues and solar module's backplate fixed connection.

4. The solar cell module of claim 1, wherein: the thickness of the POE adhesive film layer between the battery module and the front film layer is 0.5 mm; the thickness of POE glued membrane layer is 0.5mm between battery module and the backplate.