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Photovoltaic module and terminal box with isolation communication function

A photovoltaic module and isolated communication technology, applied in photovoltaic power generation, photovoltaic modules, electrical components, etc., can solve the problems of poor heat dissipation, poor ventilation, and single function of junction boxes in heating devices, so as to improve the heat dissipation and insulation performance of devices and improve reliability performance and controllability, and simplified installation and maintenance

Active Publication Date: 2016-02-03
ANHUI CHANGYUAN GREEN ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical switch has a serious switching arc problem, and the electronic switch has the problem of excessive conduction loss.
Fault protection at the PV module level is an essential support for system protection, while conventional switches cannot solve the switch control at the module level
[0004] Existing junction boxes of photovoltaic modules have single functions, and the heat dissipation of internal heating devices is poor
The problem is exacerbated when the application environment temperature is too high or the backside of the module is poorly ventilated

Method used

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  • Photovoltaic module and terminal box with isolation communication function
  • Photovoltaic module and terminal box with isolation communication function
  • Photovoltaic module and terminal box with isolation communication function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] like figure 1 A photovoltaic module and a junction box with an isolated communication function are shown, the present invention connects one of the transmitting end and the receiving end of the isolated transceiver device 4 (photocoupler or infrared transceiver) to the internal communication circuit 37 of the photovoltaic module junction box, Another isolated transmitting end and receiving end are connected with the communication connector socket 9 on the junction box housing; the communication cable 10 is connected with the electronic components of the internal communication circuit 38 of the junction box, and is drawn out of the junction box and inserted into the communication connector 8 header connection. The communication connector plug 8 and the communication connector socket 9 can also be fixed on the junction box housing; or the communication cable 10 can be used to lead out of the junction box housing. The communication connector plug 8 of the photovoltaic mod...

Embodiment 2

[0054] like figure 2 As shown in a photovoltaic module and a junction box with an isolated communication function, the present invention connects two isolated transceiver devices 4 (photocouplers or infrared transceivers) with a communication connector plug 8 and a communication connector socket 9; or The isolation transceiver device 4 is encapsulated in the communication connector plug 8 and the communication connector socket 9, and the communication cable 10 is used to lead out of the junction box housing; or the communication connector socket 9 is fixed on the junction box housing, and the communication connector plug 8 is used for The communication cable 10 is led out of the junction box housing; or the isolation transceiver device 4 is packaged on the body of the photovoltaic module 5 . The isolation transceiver device 4 of the adjacent photovoltaic module is connected and isolated for communication; the external device is connected with the photovoltaic module, and the ...

Embodiment 3

[0056] like image 3 Shown is a photovoltaic module and a junction box with an isolated communication function, the present invention connects several photovoltaic modules 5 in series, wherein the photovoltaic module 5 connects the communication connector plug 8 with the communication connector socket 9 of the adjacent photovoltaic module, The communication connector plug 8 of the last photovoltaic module in the string is connected to the communication distributor 27 of the external device. The last photovoltaic module isolates communication through the isolation transceiver device inside the communication distributor 27 . Electronic components such as isolated transceiver device 4 , current sensor 19 , voltage sensor 18 , temperature sensor 20 , microprocessor 22 and bypass diode 15 are connected to printed circuit board 3 and powered by photovoltaic module 5 . When the photovoltaic module 5 needs to have functions such as arc fault protection and overcurrent protection, and...

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Abstract

The invention relates to a photovoltaic module and a terminal box with an isolation communication function. A photoelectric coupler or an infrared transmitting tube, an infrared receiving tube, a current sensor, a voltage sensor, a temperature sensor, a microprocessor, a bypass diode and other electronic components are connected with the photovoltaic module through a printed circuit board; an electronic switch and a bypass switch are in parallel connection, and the electronic switch is in series connection with the positive electrode or the negative electrode of the photovoltaic assembly. The photovoltaic module and the terminal box can realize functions of information detection and performance analysis of the photovoltaic module, isolation communication among the photovoltaic modules, isolation communication between the photovoltaic module and an external apparatus, on and off control of the photovoltaic module, arc protection, overcurrent protection and earth leakage protection, as well as can solve the problems of poor heat dissipation of devices and the like; and all or partial of the functions are integrated for the terminal box of the photovoltaic module, so that the cost of a photovoltaic system is reduced, the installation and the maintenance of the photovoltaic system are simplified, the reliability and the controllability of the photovoltaic system are improved.

Description

technical field [0001] The present invention relates to the isolated communication and control of photovoltaic modules and junction boxes, in particular to an intelligent photovoltaic module and an intelligent photovoltaic module used to solve the problem of isolated communication between photovoltaic modules and external devices, on-off control of photovoltaic modules, information detection and fault protection. Junction Box. Background technique [0002] Photovoltaic systems require high-reliability and low-cost communication and control, perfect abnormal monitoring, simple construction and convenient networking. Technical support based on photovoltaic modules is particularly important. Most of the current communication is based on wireless electromagnetic waves. Electromagnetic wave communication has problems such as complex system, high cost, easy interference, high loss, and limited number of networking channels. Electromagnetic wave communication cannot support the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S40/34
CPCY02E10/50
Inventor 余晓东张光琴仲继寿余润洁
Owner ANHUI CHANGYUAN GREEN ENERGY
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