Split series solar junction box

A solar energy and junction box technology, applied in semiconductor devices, photovoltaic power generation, photovoltaic modules, etc., can solve the problems of module output power drop, long connection cable of junction box, poor heat dissipation of junction box, etc., to achieve enhanced heat dissipation and stable work Effect

Inactive Publication Date: 2011-07-06
JIANGSU SHANGKUN BIOLOGICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the junction boxes of solar photovoltaic modules are all connected by one module and one junction box. This connection method has the following two problems: 1. The bus bar leading to the junction box in the module and the connecting cable between the junction boxes are too long. The resistance of the wire is large and the loss is large, which causes the output power of the module to drop; 2. Since only one junction box is

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, the split series solar junction box drawn from the left, refer to Figure 4 : A solar junction box, comprising a base 1 and a large box cover 2, the base 1 and the large box cover 2 are connected, the base 1 and the large box cover 2 are made of heat-conducting materials, and the base 1 and the large box cover 2 Between them, a plurality of sets of connection terminals 3 are arranged in parallel, and each two opposite terminals are connected through one or more diodes 4 to play a role of bypass protection. Each connection terminal 3 is correspondingly connected to the busbar 8 on the solar module, and the connection terminal 3 and the diode 4 are packaged with conductive glue 5 . The connecting terminal 3 has a relatively large area, which not only serves as a connection, but also as a heat dissipation rib. The sealing function of the conductive glue 5 ensures the sealing of the junction box on the one hand, and on the other hand, when the diode 4 is worki...

Embodiment 2

[0024] Embodiment 2, split series solar junction box without lead-out, refer to Figure 5 : A solar junction box, comprising a base 1 and a large box cover 2, the base 1 and the large box cover 2 are connected, the base 1 and the large box cover 2 are made of heat-conducting materials, and the base 1 and the large box cover 2 Between them, a plurality of sets of connection terminals 3 are arranged in parallel, and each two opposite terminals are connected through one or more diodes 4 to play a role of bypass protection. Each connection terminal 3 is correspondingly connected to the busbar 8 on the solar module, and the connection terminal 3 and the diode 4 are packaged with conductive glue 5 . The middle connecting terminal 3 has a relatively large area, which not only serves as a connection, but also as a heat dissipation rib. The sealing function of the conductive glue 5 ensures the sealing of the junction box on the one hand, and on the other hand, when the diode 4 is worki...

Embodiment 3

[0027] Embodiment 3, the split series solar junction box drawn from the right, refer to Figure 6 : A solar junction box, comprising a base 1 and a large box cover 2, the base 1 and the large box cover 2 are connected, the base 1 and the large box cover 2 are made of heat-conducting materials, and the base 1 and the large box cover 2 Between them, a plurality of sets of connection terminals 3 are arranged in parallel, and each two opposite terminals are connected through one or more diodes 4 to play a role of bypass protection. Each connection terminal 3 is correspondingly connected to the busbar 8 on the solar module, and the connection terminal 3 and the diode 4 are packaged with conductive glue 5 . The connecting terminal 3 has a relatively large area, which not only serves as a connection, but also as a heat dissipation rib. The sealing function of the conductive glue 5 ensures the sealing of the junction box on the one hand, and on the other hand, when the diode 4 is work...

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PUM

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Abstract

The invention discloses a split series solar junction box which comprises a base and a box body, wherein the base and the box body are connected and are made from heat conduction materials; multiple groups of terminal blocks are distributed in parallel between the base and the box body; and every two terminal blocks are connected through one or multiple diodes so as to perform a bypass protection function. Each terminal block is correspondingly connected with a bus bar on a solar component, and the terminal block and the diode are encapsulated by heat conductive adhesives. According to the junction box disclosed by the invention, the radiating effect of the junction box is enhanced, a solar photovoltaic cell component works more stably, and solar photovoltaic components with different power adopt the same junction boxes of three specifications, thereby being convenient in production and management.

Description

technical field [0001] The invention relates to a solar junction box, in particular to a solar junction box which adopts multiple splits connected in series. Background technique [0002] At present, the junction boxes of solar photovoltaic modules are all connected by one module and one junction box. This connection method has the following two problems: 1. The bus bar leading to the junction box in the module and the connecting cable between the junction boxes are too long. The resistance of the wire is large and the loss is large, which causes the output power of the module to drop; 2. Since only one junction box is used, the cells of the solar photovoltaic module are grouped less, and the voltage of each group is higher due to the less grouping. The junction box using this connection method has the following two problems. 1. The heat dissipation of the junction box is not good, which directly affects the normal operation of the components. 2. Different power components u...

Claims

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Application Information

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IPC IPC(8): H02G3/16H02G3/08H01L31/042H02S40/34
CPCY02E10/50
Inventor 严荣飞
Owner JIANGSU SHANGKUN BIOLOGICAL EQUIP
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