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Solar cell iv test system based on electronic load in constant current mode

A solar cell and electronic load technology, applied in the field of solar cell IV test system, can solve the problems of inability to meet diversified market demands, inconvenient portability, high cost, etc., and achieve portability and large-scale production, low cost, and improved capacity Effect

Inactive Publication Date: 2017-05-03
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current photovoltaic I-V test system cannot meet the diverse market needs due to its outstanding shortcomings such as bulky, expensive, and inconvenient to carry.

Method used

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  • Solar cell iv test system based on electronic load in constant current mode
  • Solar cell iv test system based on electronic load in constant current mode
  • Solar cell iv test system based on electronic load in constant current mode

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Embodiment Construction

[0037] see Figure 1 to Figure 8 As shown, the present invention provides a solar cell TV test system based on constant current mode electronic load, comprising:

[0038] An analog circuit part 10 and a digital circuit part 20, wherein:

[0039] The analog circuit part 10 includes:

[0040] An electronic load module 1, said electronic load module 1 is made up of three operational amplifiers with symmetrical structure, four voltage dividing resistors and a sampling resistor (see figure 2 ), its role is to convert the excitation voltage signal input by the 12-bit digital-to-analog converter DAO of the MCU main control module 3 into a current signal, and precisely control the current flowing through the solar cell. The specific working and connection methods are as follows: the electronic load has Vb, VI, VU, VCC, VSS, and five main external ports: port Vb is connected to the positive output pole of the solar cell under test; port VI is connected to the DAO output pin of the M...

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Abstract

A solar cell IV testing system based on constant-current-mode electronic load comprises an electronic load module, a driving enhancement module, a first protection circuit, a second protection circuit, an MCU (micro control unit) master control module, a keyboard control module, a liquid crystal display module, an interface communication module and a power supply voltage stabilizing module. The input end of the driving enhancement module is connected with a port 1 of the electronic load module and serially connected with a solar cell. The input end of the first protection circuit is connected with a voltage detection port 5 of the driving enhancement module, and the output end of the first protection circuit is connected with a 16-bit AD0 (analog / digital 0) port 6 of the MCU master control module. The input end of the second protection circuit is connected with a current detection port 4 of the driving enhancement module, and the output end of the second protection module is connected with a 16-bit AD1 port 5 of the MCU master control module. The MCU master control module is a C8051F chip. The keyboard control module is connected with a port 2 of the MCU master control module. The liquid crystal display module is connected with a port 1 of the MCU master control module. The interface communication module is connected with a port 3 of the MCU master control module. The power supply voltage stabilizing module supplies power to the integral solar cell IV testing system.

Description

technical field [0001] The invention belongs to the combination of the field of photoelectric technology and the field of measurement and automatic control, and in particular relates to a solar cell IV testing system based on a constant current mode electronic load. Background technique [0002] With the rapid development of human society, the demand for energy is increasing globally, while traditional non-renewable mineral energy is gradually being exhausted. The development and utilization of renewable new energy has become a hot research topic in countries all over the world. Solar energy has attracted more and more attention from the world because of its many advantages such as cleanliness and renewability. Under the background of "energy conservation, emission reduction, and development of green energy", the development of photovoltaic energy and its application value has become an important direction of current scientific research. In the production of photovoltaic ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S50/10
CPCH02S50/00Y02E10/50
Inventor 张渊博韩培德卓国文
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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