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CN-224233640-U - Photovoltaic module junction box and photovoltaic system

CN224233640UCN 224233640 UCN224233640 UCN 224233640UCN-224233640-U

Abstract

The utility model relates to the technical field of photovoltaics and discloses a photovoltaic module junction box and a photovoltaic system, wherein the photovoltaic module junction box comprises a box body, a cover plate, a cable and a protection piece, a cavity is arranged in the box body, an opening is arranged at the top of the box body, a component is arranged in the cavity, the cover plate is arranged at the opening, one end of the cable penetrates through the box body to be connected with the component, a connector is arranged at one end of the cable, which is far away from the box body, an installation cavity is arranged in the protection piece, and the two connectors are mutually inserted and installed in the protection piece.

Inventors

  • HAN HEXIANG
  • WU SHIBIN
  • YANG YANG

Assignees

  • 三峡津蓟(天津)新能源发电有限公司
  • 中国三峡新能源(集团)股份有限公司

Dates

Publication Date
20260512
Application Date
20250606

Claims (11)

  1. 1. A photovoltaic module junction box, comprising: The box body (1), the inside of the box body (1) is a cavity, the top is provided with an opening, and components are arranged in the cavity; the cover plate (2) is arranged at the opening; The cable (3), one end of the cable (3) passes through the box body (1) to be connected with the components and parts, and one end of the cable (3) far away from the box body (1) is provided with a joint (4); The protection piece (5), be equipped with the installation cavity in protection piece (5), two connect (4) peg graft each other and install in protection piece (5).
  2. 2. The photovoltaic module junction box according to claim 1, characterized in that the protection piece (5) comprises a first sheath (501) and a second sheath (502), grooves are formed in the first sheath (501) and the second sheath (502), the first sheath (501) and the first sheath (501) are detachably connected, a containing cavity is formed between the two grooves, and the connector (4) is detachably installed in the containing cavity.
  3. 3. The photovoltaic module junction box according to claim 2, characterized in that the first sheath (501) is provided with a buckle (5011) or a clamping groove (5012), the second sheath (502) is provided with a clamping groove (5012) or a buckle (5011), and the buckle (5011) is clamped with the clamping groove (5012).
  4. 4. A photovoltaic module junction box according to claim 2 or 3, characterized in that a first sealing element (301) is movably arranged at one end of the cable (3) close to the joint (4), a first mounting groove (5013) is arranged on the first sheath (501) and the second sheath (502), and the first sealing element (301) is detachably arranged in the first mounting groove (5013).
  5. 5. The photovoltaic module junction box according to claim 1, characterized in that a second mounting groove (101) is formed in the top of the box body (1), and a second sealing member (102) is mounted in the second mounting groove (101).
  6. 6. The photovoltaic module junction box according to claim 1, characterized in that the side wall of the box body (1) is provided with an end cap (103), and the cable (3) is arranged in the end cap (103) in a penetrating way.
  7. 7. The photovoltaic module junction box according to claim 6, characterized in that a third sealing element (104) is arranged in the end sleeve (103), and the cable (3) is arranged in the third sealing element (104) in a penetrating way.
  8. 8. The photovoltaic module junction box according to claim 1, characterized in that the outer wall of the box body (1) is provided with a plurality of heat dissipation strips (105).
  9. 9. The photovoltaic module junction box of claim 1 further comprising: the box body (1) is arranged at the top of the base (6).
  10. 10. The photovoltaic module junction box according to claim 1, characterized in that the inner wall of the box body (1) is provided with a coating.
  11. 11. A photovoltaic system, comprising: A plurality of photovoltaic modules; a number of photovoltaic module junction boxes according to any one of claims 1 to 10 mounted on the photovoltaic module, the connectors (4) on adjacent photovoltaic modules being plugged into each other.

Description

Photovoltaic module junction box and photovoltaic system Technical Field The utility model relates to the technical field of photovoltaics, in particular to a junction box of a photovoltaic module and a photovoltaic system. Background The photovoltaic junction box is a connecting device between a solar cell matrix formed by the solar cell modules and the solar charging control device, and mainly used for connecting and protecting the solar cell modules, connecting the power generated by the solar cells with an external circuit and conducting the current generated by the solar cell modules. In the prior art, the junction box comprises a box body and connectors connected through a cable, and two adjacent photovoltaic modules are mutually spliced through the connectors of the junction box of each photovoltaic module to achieve the purpose of current transmission of the two adjacent photovoltaic modules. Because the two connectors in the junction box are directly spliced, the junction box is poor in connection stability and easy to loosen and disconnect. Disclosure of utility model In view of the above, the utility model provides a photovoltaic module junction box and a photovoltaic system, which are used for solving the problem that connectors in the photovoltaic junction box are easy to loosen and disconnect in the prior art. In a first aspect, the utility model provides a photovoltaic module junction box, which comprises a box body, a cover plate, a cable and a protection piece, wherein a cavity is formed in the box body, an opening is formed in the top of the box body, components are arranged in the cavity, the cover plate is arranged at the opening, one end of the cable penetrates through the box body to be connected with the components, a connector is arranged at one end, away from the box body, of the cable, an installation cavity is formed in the protection piece, and the two connectors are mutually inserted and installed in the protection piece. The connector assembly has the beneficial effects that the connectors of two adjacent photovoltaic module junction boxes are mutually inserted and installed in the protective piece, the loose and falling-off condition of the connectors can be avoided, the reliability of cable connection is ensured, and meanwhile, the protective piece can also protect the connectors and resist external impact. In an alternative embodiment, the protection member comprises a first sheath and a second sheath, grooves are formed in the first sheath and the second sheath, the first sheath and the first sheath are detachably connected, a containing cavity is formed between the two grooves, and the connector is detachably mounted in the containing cavity. The detachable joint has the beneficial effects that the first sheath and the second sheath which are detachably connected are convenient to disassemble, assemble and maintain the joint, and the detachable joint has the advantages of simple structure and convenience in use. In an alternative embodiment, the first sheath is provided with a buckle or a clamping groove, and the second sheath is provided with a clamping groove or a buckle, and the buckle is clamped with the clamping groove. The novel protective sleeve has the beneficial effects that the first protective sleeve and the second protective sleeve are connected with the clamping groove in a clamping way, so that the novel protective sleeve has the advantages of simple structure and firm connection. In an alternative embodiment, a first sealing element is movably arranged at one end of the cable close to the joint, first mounting grooves are formed in the first sheath and the second sheath, and the first sealing element is detachably mounted in the first mounting grooves. The cable and the protection piece sealing device has the beneficial effects that the first sealing piece is detachably arranged in the first mounting groove, so that the sealing performance between the cable and the protection piece can be improved. In an alternative embodiment, the top of the case is provided with a second mounting groove in which a second seal is mounted. The utility model has the beneficial effects that the second sealing piece is arranged between the cover plate and the box body, so that the gap between the box body and the top cover caused by thermal expansion can be compensated, the tightness between the cover plate and the box body is improved, and the condensation caused by respiratory effect is prevented. In an alternative embodiment, the side wall of the case is provided with an end cap, and the cable is threaded into the end cap. The end sleeve has the beneficial effects that the end sleeve can protect one side of the cable close to the box body, and the end part of the cable is prevented from being damaged. In an alternative embodiment, a third seal is provided in the end cap and the cable is threaded in the third seal. The utility model has the beneficial effects that the third s