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Three types of photovoltaic modules problem detection methods to quickly collect it

Three types of photovoltaic modules problem detection methods to quickly collect it Photovoltaic modules are the core components of photovoltaic power generation, in order to normal operation of photovoltaic power generation, it is necessary to inspect and maintain the components of photovoltaic power plants. The common problems of photovoltaic modules are: hot spots, cracks and power attenuation. Because these quality problems are hidden inside the battery board or occur after the photovoltaic power station has been in operation for a period of time, it is difficult to identify when the battery board enters the site for acceptance, and professional equipment is needed for photovoltaic module detection. Causes of Hot Spot Formation and Detection Method of Photovoltaic Modules Photovoltaic module hot spot refers to the module in the sun, because some of the cells are blocked can not work, so that the temperature of the covered part is much larger than the uncovered part, resulting in high temperature burning dark spots. The formation of hot spots in photovoltaic modules is mainly composed of two internal factors, namely, the internal resistance and the dark current of the cell itself. The hot spot durability test is a photovoltaic module detection test to determine the ability of the solar cell module to withstand the hot spot heating effect. Through the reasonable time and process to test the photovoltaic cell module, to show that the photovoltaic cell can be used for a long time under the specified conditions. Hot spot detection can be detected by infrared thermal imager, which can use thermal imaging technology to display the temperature and its distribution of the measured target in a visible thermal map. Causes of Crack Formation and Detection Methods of Photovoltaic Modules Crack refers to the small cracks in the battery chip, the battery chip crack will accelerate the battery chip power attenuation, affecting the normal service life of the component, while the battery chip crack will expand under mechanical load, may lead to open circuit damage, crack may also lead to hot spot effect. The occurrence of cracking is due to the joint action of many reasons, the uneven force of the components, or the severe jitter in the process of transportation and transportation may cause the cracking of the battery. Photovoltaic modules will be tested by EL imaging before leaving the factory, and the instrument used is EL detector. The instrument uses the principle of electroluminescence of crystalline silicon, and uses a high-resolution CCD camera to capture the near-infrared image of the component to obtain and determine the defects of the component. The EL detector can detect whether the photovoltaic cell module has hidden cracks, fragments, virtual welding, broken grid and abnormal phenomena of single-chip cells with different conversion efficiency. Three types of photovoltaic modules problem detection methods to quickly collect it

2019

European solar market "return" good domestic photovoltaic leader

The resumption of free trade in the European solar market will benefit China's local photovoltaic capacity. The industry generally believes that in the past, "MIP" limited the competitiveness of China's local production capacity, with the realization of free trade, China's local photovoltaic production capacity exports to Europe will grow. The intensity of domestic subsidies for the photovoltaic industry has also begun to gradually decrease. On May 31 this year, the three national ministries and commissions jointly issued the "Notice on Matters Related to Photovoltaic Power Generation in 2018" (the industry called the "New Deal for 531"), which clearly pointed out that the construction scale of ordinary photovoltaic power stations in 2018 will not be arranged for the time being, and only 10 million kilowatts will be arranged. The construction scale of distributed photovoltaic power generation will further reduce the subsidy intensity of photovoltaic power generation. For the "531 New Deal", the photovoltaic industry vividly called it "weaning" off guard ". Under the new situation of strictly controlling the scale and lowering the electricity price, the photovoltaic industry has rapidly entered the cold winter period. We believe that in the past few years, China's photovoltaic industry was in a period of brutal expansion. Because the new energy policy continued to become the focus of market capital speculation at that time, a large number of companies began to expand production capacity disorderly or engage in photovoltaic products across industries, resulting in a certain degree. Inefficient and fierce market competition. This also forced the state to start the photovoltaic industry by raising industry standards to reduce the scope of subsidies and other ways to carry out supply-side reform. From an industry perspective, since 2018, the prosperity of the photovoltaic industry has also shown a significant downward trend, especially after the introduction of the New Deal in May, the industry-wide photovoltaic net profit index has declined significantly. The EU's termination of the "double reverse" is expected to enhance the certainty of overseas demand, and the performance of photovoltaic enterprises with overseas layout will increase, bringing a certain boost to the domestic photovoltaic industry chain, which is in the "severe winter" of the policy. Pacific Securities believes that with the termination of the EU MIP, it will benefit domestic exports in the long run. On the whole, the decline in demand in markets such as China has brought a greater impact on demand. This year's photovoltaic market competition will be unprecedentedly fierce. The industry is currently in a relatively sluggish state. However, due to the acceleration of the parity time node, the industry is expected to be at the end of the year or next year. The beginning of the year ushered in an inflection point. Long-term bullish on the company's profit margin and market share after the shuffle. Recommended to pay attention to the target: Longji shares (601012.SH), Tongwei shares (600438.SH), solar power (300274.SZ), Zhengtai Electric (601877.SH).

2019

2019 New Year Component Workshop Full Production and Shipment

At the beginning of the New Year in 2019, the company's component workshop will continue to be fully produced and shipped, laying a good foundation for achieving this year's expected goals.

2019

Yangzhou Huasheng Optical 150KW Powerhouse Power Station Grid-connected Power Generation

The 150KW workshop power station of Huasheng Optical Instrument Factory in Yangzhou City, Jiangsu Province has been connected to the grid for power generation. The project adopts Hongde 265-watt polycrystalline components, and the daily power generation meets the owner's expected requirements.

2019

Gansu Huining 800KW photovoltaic poverty alleviation project grid-connected power generation

The 800KW photovoltaic poverty alleviation project in Huining, Gansu, built by Jiangsu Hongde Technology, has been connected to the grid for power generation, bringing solar clean power to local people and bringing considerable economic benefits to local poor farmers every year.

2019

Jiangsu Hongde Technology wishes all new and old customers a happy New Year-all the best!

2019 the Lunar New Year is approaching, Jiangsu Hongde Technology Development Co., Ltd. wishes all new and old customers a happy New Year-all the best!

2019

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Jiangsu Hongde Technology Development Co., Ltd.

Address: High-tech Industrial Development Zone, Gaoyou City, Jiangsu Province, China

Domestic business-PV division:0514-84241968

Overseas Business-Photovoltaic Business Department:0086-514-84228968

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