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Double-glass photovoltaic assembly

A double-glass photovoltaic and component technology, applied in the field of solar cells, can solve the problems of difficult cleaning of potting glue, large manpower and time-consuming replacement of junction boxes, waste, etc.

Active Publication Date: 2015-07-01
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, on the one hand, the bus bar may be broken, and the potting glue on the bus bar is difficult to clean, so it is difficult to solder the bus bar when replacing a new junction box, or form a false weld, which has a great potential safety hazard ; On the other hand, it takes a lot of manpower and time to replace the junction box, causing unnecessary waste
A defect in the design of this junction box is that the bus bar is just above the diode lead legs, and the melting of the solder when soldering the bus bar may cause the diode to be desoldered or falsely soldered, which is likely to cause production defects

Method used

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  • Double-glass photovoltaic assembly
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Embodiment Construction

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "top", "bottom", "inner", "outer" etc. are based on the drawings The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, a...

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Abstract

A dual-glass photovoltaic module, comprising a body (1), said body (1) comprising a first glass layer (11), a first encapsulation layer (12), a cell group layer (13), a second encapsulation layer (14), and a second glass layer (15) arranged in a sequential stack, said cell group layer (13) drawing a current by means of a busbar (131), said busbar (131) being between the first glass layer (11) and the second glass layer (15) and drawing from the sides of the body (1); a rim (6), said rim (6) encapsulating the outer perimeter of the body (1) by means of a sealant, the rim (6) having a notch (60); and a junction box (4), said junction box (4) being disposed at the notch (60), the junction box (4) being in sealed communication with the body (1) and the rim (6), the busbar (131) being in electrical communication with the junction box (4).

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a double-glass photovoltaic module. Background technique [0002] During the long-term use of photovoltaic modules for decades, various opaque objects often fall or adhere to the front of the module. Once there are foreign objects, a hot spot effect will occur, and the diodes protecting the modules will be is turned on, and current flows to generate heat. This happens with such high frequency that there is a good chance that the diode will fail before the warranty period expires. The protective effect against the hot spot effect of the components is then lost and the entire plant is endangered. In addition, due to the use of glass on the back of the double-glass module and the good sealing effect on the edges, the service life can be extended to more than 40 years. At this time, it is difficult for the junction box whose base material is plastic to achieve this target life. This pro...

Claims

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Application Information

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IPC IPC(8): H02S30/10H02S40/34
CPCH02S40/34H02S30/10H01L31/048H02S30/00H02S40/00H01L31/0488Y02E10/50H01L31/042H01L31/044
Inventor 王申存孙翔王胜亚姜占锋
Owner BYD CO LTD