CN215378862U

CN215378862U - Novel photovoltaic junction box and photovoltaic module

Info

Publication number: CN215378862U
Application number: CN202121222277.0U
Authority: CN
Inventors: 吴翔; 石亮杰; 陈雨; 严伟
Original assignee: Chuzhou Longi Solar Technology Co Ltd
Current assignee: Chuzhou Longi Solar Technology Co Ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-31
Anticipated expiration: 2031-06-02

Abstract

The utility model discloses a novel photovoltaic junction box and a photovoltaic assembly, relates to the technical field of photovoltaic assembly manufacturing, and is used for avoiding the phenomenon that the photovoltaic junction box falls off or shifts in position in the process of mounting the photovoltaic junction box. The novel photovoltaic junction box comprises: the terminal box comprises a terminal box body, a strong adhesive tape, a wire and at least one wire fixing part. The junction box body is provided with an accommodating cavity, and one side of the bottom of the junction box body, which is far away from the opening of the accommodating cavity, is provided with a groove. The powerful adhesive tape is arranged in the groove. At least one wire fixing part is arranged on the outer side wall of the junction box body. The lead is fixed on the lead fixing part and connected with the lead fixing part. The photovoltaic module comprises the novel photovoltaic junction box mentioned in the technical scheme.

Description

Novel photovoltaic junction box and photovoltaic module

Technical Field

The utility model relates to the technical field of photovoltaic module manufacturing, in particular to a novel photovoltaic junction box and a photovoltaic module.

Background

The photovoltaic module can be composed of a battery piece, an adhesive film, a glass back plate, a photovoltaic junction box, an aluminum frame and the like. The photovoltaic junction box is mainly used for transmitting current. In the prior art, in the process of installing the photovoltaic junction box, the sealant is coated at the bottom of the photovoltaic junction box, and then the photovoltaic junction box is bonded on the glass back plate. In the process, the sealant needs enough time and temperature and humidity conditions for curing, so that a certain bonding force is ensured between the photovoltaic junction box and the glass backboard. However, during the curing process of the sealant, the photovoltaic junction box is prone to drop or position shift due to external factors or the weight of the photovoltaic junction box.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel photovoltaic junction box and a photovoltaic assembly, which are used for avoiding the phenomenon that the photovoltaic junction box falls off or is shifted in position in the process of mounting the photovoltaic junction box.

In a first aspect, the present invention provides a novel photovoltaic junction box, comprising: the terminal box comprises a terminal box body, a strong adhesive tape, a wire and at least one wire fixing part. The junction box body is provided with an accommodating cavity, and one side of the bottom of the junction box body, which is far away from the opening of the accommodating cavity, is provided with a groove. The powerful adhesive tape is arranged in the groove. At least one wire fixing part is arranged on the outer side wall of the junction box body. The lead is fixed on the lead fixing part.

Compared with the prior art, in the novel photovoltaic junction box provided by the utility model, the strong adhesive tape is arranged in the groove formed in the bottom of the junction box body. When the novel photovoltaic junction box is required to be bonded on the glass backboard, the release paper on the surface of the strong adhesive tape is torn off, so that the strong adhesive tape is bonded on the glass backboard, and the novel photovoltaic junction box can be bonded on the glass backboard. Because the strong adhesive tape does not need curing time in the bonding process, the novel photovoltaic junction box can be rapidly bonded on the glass back plate. Based on this. The phenomenon that the photovoltaic junction box falls or shifts in position is avoided in the process of installing the photovoltaic junction box. Simultaneously, the lateral wall of terminal box body is equipped with at least one wire fixed part, can be used for fixed wire with this body coupling of photovoltaic terminal box, can prevent that photovoltaic module from in test or transportation, and the wire rocks and leads to the terminal box body to produce the displacement, and the phenomenon that drops or offset appears in this novel photovoltaic terminal box of avoiding that can step forward. Meanwhile, the lead is fixed on the lead fixing part, and the situation that the lead is shaken to contact with the photovoltaic module to damage the laminated members such as the glass back plate and the like in the transportation process can be prevented.

In a possible implementation, the groove is arranged along the circumferential direction of the bottom of the junction box body. Based on this, can increase the area of contact of powerful sticky tape and glass backplate to can make this novel photovoltaic terminal box can be more firm bond on the glass backplate.

In one possible implementation, each wire fixing portion has at least one clamping groove, and the wire is movably connected with the at least one clamping groove. The clamping groove on each wire fixing part is used for fixing a wire.

In one possible implementation, the strong adhesive tape is a double-sided foam adhesive tape.

In a possible implementation manner, the novel photovoltaic junction box further includes: an electronic device having a module diode, a positive terminal and a negative terminal, the positive terminal and the negative terminal being respectively provided at both ends of the module diode. The electronic device is arranged in the accommodating cavity of the junction box body, and the positive terminal or the negative terminal of the electronic device is electrically connected with the first end of the lead.

In a possible implementation manner, the novel photovoltaic junction box further includes: a connector electrically connected to the second end of the wire.

In one possible implementation manner, the positive terminal and the negative terminal have a fin structure. The fin structure not only enables the novel photovoltaic junction box to have larger current bearing capacity, but also can further improve the heat dissipation effect of the novel photovoltaic junction box.

In a possible implementation manner, the bottom of the junction box body is further provided with a glue leakage through hole and/or a lead-out wire through hole.

In a possible implementation manner, the novel photovoltaic junction box further comprises a sealing ring. The sealing ring is arranged in the groove. Based on this, can prevent that steam from invading the recess to avoid steam to reduce the viscidity of establishing the powerful sticky tape in the recess, further prevent because powerful sticky tape viscidity reduces, and lead to novel photovoltaic terminal box to appear dropping or the phenomenon of offset.

In a second aspect, the present invention provides a photovoltaic module, including the novel photovoltaic junction box of the first aspect and any one of the possible implementation manners of the first aspect.

Compared with the prior art, the beneficial effects of the photovoltaic module provided by the utility model are the same as those of the novel photovoltaic junction box in any one of the first aspect and the technical solutions that may be realized in the first aspect, and are not described herein again.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is an exploded schematic view of a novel photovoltaic junction box according to an embodiment of the present invention;

fig. 2 is a schematic back structure diagram of the novel photovoltaic junction box provided by the embodiment of the utility model;

fig. 3 is a schematic front structural view of the novel photovoltaic junction box provided by the embodiment of the utility model;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment of the utility model provides a novel photovoltaic junction box 100. Fig. 1 illustrates an exploded structure schematic diagram of a novel photovoltaic junction box 100 provided in an embodiment of the present invention, and fig. 2 illustrates a back structure schematic diagram of the novel photovoltaic junction box 100 provided in the embodiment of the present invention. Referring to fig. 1 and 2, the novel photovoltaic junction box 100 includes: the terminal box comprises a cover body 110, a terminal box body 120, a strong adhesive tape, a wire 130 and at least one wire fixing part 140. The cover 110 is connected to the junction box body 120, and is used for sealing the junction box body 120. The junction box body 120 has a receiving cavity, and a side of the bottom of the junction box body 120 facing away from the opening of the receiving cavity has a groove 121. The strong adhesive tape is disposed in the groove 121. At least one wire fixing part 140 is disposed on an outer sidewall of the junction box body 120, and the wire 130 is connected to the at least one wire fixing part 140.

In the embodiment of the utility model, when the novel photovoltaic junction box 100 needs to be bonded on the glass back plate, the novel photovoltaic junction box 100 can be bonded on the glass back plate only by tearing off the release paper on the surface of the strong adhesive tape to bond the strong adhesive tape on the glass back plate. Since the strong adhesive tape does not require curing time in the bonding process, the novel photovoltaic junction box 100 can be rapidly bonded on the glass back sheet. Based on this. The phenomenon that the photovoltaic junction box falls or shifts in position is avoided in the process of installing the photovoltaic junction box. Meanwhile, the side wall of the junction box body 120 is provided with at least one wire fixing part 140, which can be used for fixing the wire 130 connected with the photovoltaic junction box body 120, so that the wire 130 can be prevented from shaking to cause the junction box body 120 to generate displacement in the test or transportation process of the photovoltaic module, and the phenomenon of falling or position deviation in the bonding process of the glass back plate of the novel photovoltaic junction box 100 can be further avoided. Meanwhile, the lead 130 is fixed on the lead fixing part 140, and the lead can be prevented from shaking to contact with the photovoltaic module to damage laminates such as a glass back plate and the like in the transportation process.

In one possible implementation, referring to fig. 2, the strong adhesive tape may be a double-sided foam tape. The double-sided foam tape may include: the pressure-sensitive adhesive comprises a base material, pressure-sensitive adhesives coated on two sides of the base material and release paper. Wherein, one side of the substrate can be bonded at the bottom of the groove 121, and the other side of the substrate can be laid with release paper. The substrate may include, but is not limited to, EVA or PE foam. Before the novel photovoltaic junction box 100 is adhered to the glass back plate, release paper is laid on the surface of the power tape for maintaining the viscosity of the power tape. The width of the power tape may correspond to the width of the groove 121, and the length of the power tape may correspond to the circumference of the groove.

In one possible implementation, referring to fig. 2, in order to enable the novel photovoltaic junction box 100 to be bonded on the glass back plate more stably, the contact area between the strong adhesive tape and the glass back plate may be increased. At this time, the contact area of the power tape and the glass back plate can be increased by increasing the width or the length of the groove. For example: the groove 121 may be disposed along a circumferential direction of the bottom of the junction box body 120. That is, the outer ring of the bottom of the junction box body 120 facing away from the opening may be provided with a strong adhesive tape.

In practical applications, the width and depth of the groove 121 may be determined according to practical situations. For example: the wider the width of the groove 121, the wider the width of the power tape disposed in the groove 121. In order to further increase the contact area of the power tape and the glass back plate, the width of the groove can be maximized. In the process of bonding the novel photovoltaic junction box 100 and the glass back plate, the wider the strong adhesive tape is, the larger the contact area between the strong adhesive tape and the glass back plate is, and the novel photovoltaic junction box 100 can be bonded on the glass back plate more stably.

Fig. 3 illustrates a schematic front structural view of the novel photovoltaic junction box 100 provided by the embodiment of the utility model. In one possible implementation, referring to fig. 3, each of the wire fixing parts 140 has at least one slot, and the wire 130 is movably connected to the at least one slot.

The number of the slots may be related to the length of the conductive wire 130 and the length of the wire fixing portion 140, and the width of the slots may be related to the thickness of the conductive wire 130. When two or more than two slots are disposed on one wire fixing portion 140, all the slots may be disposed in parallel and sequentially away from the junction box body 120, and a certain distance may be provided between two adjacent slots. In the process of arranging the wires 130 around the terminal block body 120, the wires 130 may be sequentially snapped on the corresponding card slots. The wire fixing portion 140 can fix the wire 130 on the junction box body 120, so as to prevent the wire 130 from shaking to cause the junction box body 120 to generate displacement in the testing or transporting process of the photovoltaic module, and further avoid the phenomenon of falling or position deviation in the process that the novel photovoltaic junction box 100 is bonded on a glass backboard. Meanwhile, the wire fixing part 140 fixes the wire 130 on the junction box body 120, and can also avoid collision between the wire 130 and the glass backboard due to shaking of the wire 130, thereby reducing the risk of hidden crack of the glass backboard.

In practical applications, referring to fig. 3, when there is only one wire fixing portion 140, the wire fixing portion 140 may be disposed on two side walls of the junction box body 120 opposite to the wires 130. When there are a plurality of the wire fixing parts 140, the wire fixing part 140 (not shown in fig. 3) may be provided on each sidewall of the junction box body 120.

Fig. 4 illustrates a schematic structural diagram of an electronic device provided by an embodiment of the utility model. Referring to fig. 1 and 4, in one possible implementation, the novel photovoltaic junction box 100 provided in the embodiment of the present invention may further include an electronic device having a module diode 122, a positive terminal 123 and a negative terminal 124, and the electronic device is disposed in the accommodating cavity of the junction box body 120. The side wall of the junction box body 120 may be provided with a connection through hole through which the first end of the wire 130 may be electrically connected to the positive terminal 123 or the negative terminal 124 of the electronic device.

In practical applications, the novel photovoltaic junction box 100 provided by the embodiment of the utility model may further include a connector 150. The second end of the wire 130 can be electrically connected to a negative terminal or a positive terminal included in another novel photovoltaic junction box through the connector 150, so as to connect a plurality of novel photovoltaic junction boxes in series.

In one example, referring to fig. 4, the positive terminal 123 and the negative terminal 124 may be respectively disposed at two ends of the module diode 122. The positive terminal 123 may be connected to the first end of the wire 130, and the negative terminal 124 included in the new photovoltaic junction box may be electrically connected to the connector 150.

In practical applications, the positive terminal 123 and the negative terminal 124 both have fin structures. The fin structure not only enables the novel photovoltaic junction box 100 to have larger current carrying capacity, but also can further improve the heat dissipation effect of the novel photovoltaic junction box 100.

In a possible implementation manner, referring to fig. 2, the bottom of the junction box body 120 may further have a glue leakage through hole 125 and/or a lead-out wire through hole 126.

In the practical application process, in the process of sealing the junction box body 120 by using the potting adhesive, the adhesive leakage through hole 125 can ensure that the potting adhesive can completely fill the junction box body 120, thereby ensuring the electrical insulation of the electronic devices in the junction box body 120. The outgoing line through hole 126 can facilitate alternate welding of the outgoing line, so that current transmission of the novel photovoltaic junction box 100 can be achieved.

In a possible implementation manner, referring to fig. 1, the novel photovoltaic junction box 100 provided by the embodiment of the utility model may further include a sealing ring 160, and the sealing ring 160 may be disposed in the groove 121.

In practical applications, the sealing ring 160 may be disposed around the sidewall of the groove 121 to prevent moisture from entering the groove 121, thereby preventing the adhesive property of the strong adhesive tape in the groove 121 from being damaged. The seal ring 100 may be a flexible seal ring. The material of the sealing ring 100 may be silicone, but is not limited thereto.

The embodiment of the utility model also provides a photovoltaic assembly, which comprises the novel photovoltaic junction box 100 provided by the technical scheme.

Compared with the prior art, the photovoltaic module provided by the embodiment of the utility model comprises the novel photovoltaic junction box provided by the technical scheme. In actual photovoltaic module installation, when needs bond this novel photovoltaic terminal box 100 on the glass backplate, only need tear the release paper on powerful sticky tape surface, make powerful sticky tape bond on the glass backplate, alright with bond this novel photovoltaic terminal box 100 on the glass backplate. Since the strong adhesive tape does not require curing time in the bonding process, the novel photovoltaic junction box 100 can be rapidly bonded on the glass back sheet. Based on this. The phenomenon that the photovoltaic junction box falls or shifts in position is avoided in the process of installing the photovoltaic junction box. Meanwhile, the side wall of the junction box body 120 is provided with at least one wire fixing part 140, which can be used for fixing the wire 130 connected with the photovoltaic junction box body 120, so that the wire 130 can be prevented from shaking to cause the junction box body 120 to generate displacement in the test or transportation process of the photovoltaic module, and the phenomenon of falling or position deviation in the bonding process of the glass back plate of the novel photovoltaic junction box 100 can be further avoided.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A novel photovoltaic junction box, comprising:

the terminal box comprises a terminal box body, a connecting piece and a connecting piece, wherein the terminal box body is provided with an accommodating cavity, and one side of the bottom of the terminal box body, which is far away from an opening of the accommodating cavity, is provided with a groove;

the strong adhesive tape is arranged in the groove;

the at least one wire fixing part is arranged on the outer side wall of the junction box body;

and the lead is fixed on the lead fixing part.

2. The novel photovoltaic junction box of claim 1, wherein the groove is disposed circumferentially along a bottom of the junction box body.

3. The novel photovoltaic junction box of claim 1, wherein each of the wire fixing portions has at least one slot, and the wire is movably connected to the at least one slot.

4. The novel photovoltaic junction box of claim 1, wherein the power tape is double-sided foam tape.

5. The novel photovoltaic junction box of claim 1, further comprising: an electronic device having a module diode, a positive terminal and a negative terminal, the positive terminal and the negative terminal being respectively disposed at two ends of the module diode;

the electronic device is arranged in the accommodating cavity of the junction box body, and a positive terminal or a negative terminal of the electronic device is electrically connected with the first end of the lead.

6. The novel photovoltaic junction box of claim 5, further comprising: a connector electrically connected to the second end of the wire.

7. The novel photovoltaic junction box of claim 6, wherein the positive terminal and the negative terminal each have a fin structure.

8. The novel photovoltaic junction box as claimed in any one of claims 1 to 7, wherein the bottom of the junction box body is further provided with a through hole for leaking glue and/or a through hole for leading-out wire.

9. The novel photovoltaic junction box of any one of claims 1-7, further comprising a sealing ring, wherein the sealing ring is disposed in the groove.

10. A photovoltaic module, characterized by comprising the novel photovoltaic junction box of any one of claims 1-9.