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Solar battery module protection circuit, solar junction box and power generation system

A technology for solar cells and protection circuits, applied in circuits, photovoltaic power generation, electrical components, etc., can solve complex and other problems, and achieve the effect of satisfying safety and avoiding overheating

Inactive Publication Date: 2012-10-17
谢可勋 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned technical scheme is relatively complicated, so that its cost will be higher than that of similar figure 1 The technical solution shown is 3-5 times higher

Method used

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  • Solar battery module protection circuit, solar junction box and power generation system
  • Solar battery module protection circuit, solar junction box and power generation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: as figure 2 As shown, a solar cell module protection circuit includes a bypass diode 2 connected in parallel with reverse polarity of a solar cell group composed of several cells connected in series, and a bypass diode 2 electrically parallel and thermally coupled Normally open bimetal thermal switch 3.

[0030] Use the following figure 2 The working process of the above-mentioned solar cell module protection circuit is described in detail. Assuming that one or several battery slices 1 in the series-connected batteries 1 with bypass diodes 2 in parallel cannot work normally due to factors such as being blocked, which is referred to as failure, the corresponding bypass diode 2 conducts Bypass, the group of battery slices 1 is bypassed as a whole, so that the rest of the normal battery slice groups in the solar power generation system can continue to work. At this time, the bypass diode 2 bears all the current generated by other normal battery packs, an...

Embodiment 2

[0031] Embodiment 2: According to the solar cell module protection circuit described in Embodiment 1, the bypass diode 2 and the normally-open bimetal thermal switch device 3 are designed through thermal coupling and electrical parallel connection, and are molded in a plastic package . The plastic package can be used as an independent protection circuit module.

Embodiment 3

[0032] Embodiment 3: According to the solar cell module protection circuit described in Embodiment 1, the bypass diode 2 is electrically connected in parallel with the bimetal thermal switch 3 in the form of a chip, and the bypass diode 2 is installed in the form of a chip The normally open bimetal thermal switch 3 is mounted on the metal plate base or the extension of the metal plate base to realize thermal coupling, and the bypass diode 2 chip and the bimetal thermal switch 3 are integrally molded in a plastic package. The plastic package can be used as an independent protection circuit module.

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Abstract

The invention discloses a solar battery module protection circuit, a solar junction box and a power generation system, relating to the overheating protection field of a solar battery module generating system, particularly relating to the overheating protection of a solar battery module consisting of multiple series-wound solar cells, and more particularly relating to the overheating protection of a solar cell module protection circuit connected in parallel with a bypass diode. The solar battery module protection circuit is accomplished by the following technical project: the solar battery module protection circuit comprises a bypass diode and a normally-on overheating protection switch device, wherein the solar battery module protection circuit is reversely connected in parallel with a solar cell module consisting of series-wound solar cells, and the normally-on overheating protection switch device is connected in parallel and thermally coupled with the bypass diode can capable of automatically and electrically cut out the bypass circuit at a set temperature; and the normally-on overheating protection switch device can automatically return to the off normal state at the other set temperature. By using the protection circuit, the working temperature of the bypass diode can be automatically within the safe working temperature range.

Description

technical field [0001] The present invention relates to the field of overheat protection of solar battery module power generation systems, in particular to the overheat protection of solar battery modules composed of a plurality of serially connected solar battery pieces, and more particularly to the protection circuit of solar battery module modules connected in parallel with bypass diodes Overheating protection. [0002] Background technique [0003] In order to avoid overheating and damage to the battery module composed of several series-connected battery slices in the solar battery module power generation system, the solution of the prior art is as follows: figure 1 As shown, the arrow indicates sunlight, and the dotted line indicates that the number of solar cells connected in series can be multiple, not limited to the three actually drawn on the figure, and a pole is connected in parallel on a solar cell module composed of several cells connected in series. Reverse B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H02N6/00H02S10/00H02S40/34
CPCY02E10/50
Inventor 谢可勋西里奥艾珀里亚科夫
Owner 谢可勋
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