4BB Poly Cells

Tongwei Solar Co., Ltd.
Price:
From $0.230 / Wp
Cell Type: Polycrystalline
Power Range: 4.4~4.59 Wp
Region: China China
Note: Your Enquiry will be sent directly to Tongwei Solar Co., Ltd..

Description:

1. High efficiency 18.7%
2. 100% checked for reverse current and visual appearance
3. Good PID/LID resistance
4. Outstanding electrical stability
5. Great solder-ability

Product Characteristics

Model No.
4.40 4.42 4.45 4.47 4.50 4.52 4.55 4.57 4.59
Product Characteristics  
Cell Technology Polycrystalline
Dimensions 156.75×156.75 mm
Cell Thickness 180/190 ± 30 µm
Front Surface (-)  
No. of Busbars 4
Busbar Width 1.1 mm
Busbar Material Silver
Anti Reflection Coating Silicon nitride
Back Surface (+)  
No. of Soldering Pads 4
Soldering Pad Width 2.1 mm
Soldering Pad Material Silver
Back Surface Field (BSF) Aluminium
Electrical Data at STC  
Maximum Power (Pmax)
4.4 W 4.42 W 4.45 W 4.47 W 4.5 W 4.52 W 4.55 W 4.57 W 4.59 W
Voltage at Maximum Power Point (Vmpp)
0.532 V 0.534 V 0.535 V 0.537 V 0.539 V 0.54 V 0.541 V 0.542 V 0.543 V
Current at Maximum Power Point (Impp)
8.265 A 8.284 A 8.309 A 8.327 A 8.349 A 8.376 A 8.401 A 8.431 A 8.461 A
Open Circuit Voltage (Voc)
0.628 V 0.63 V 0.631 V 0.633 V 0.634 V 0.635 V 0.637 V 0.638 V 0.639 V
Short Circuit Current (Isc)
8.754 A 8.77 A 8.795 A 8.814 A 8.836 A 8.864 A 8.891 A 8.924 A 8.957 A
Cell Efficiency
17.9 % 18 % 18.1 % 18.2 % 18.3 % 18.4 % 18.5 % 18.6 % 18.7 %
Fill Factor (FF)
79.98 % 80.06 % 80.1 % 80.15 % 80.33 % 80.36 % 80.25 % 80.26 % 80.27 %
Thermal Ratings  
Temperature Coefficient of Pmax -0.36 %/˚C
Temperature Coefficient of Voc -0.36 %/˚C
Temperature Coefficient of Isc 0.06 %/˚C
Intensity Dependence
Intensity
Voc
Vmpp
1000 W/m2
1
--
900 W/m2
0.99
--
800 W/m2
0.99
--
600 W/m2
0.98
--
400 W/m2
0.96
--
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Tongwei Solar Co., Ltd.

No. 888 Changning Ave., High-Tech Zone, Hefei, Anhui
No. Staff: 3,500
Parent Company: Tongwei Group
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Covering an area of 1,000 mu, Tongwei Solar (Hefei) Co., Ltd. is the world's solar cells monomer of the largest capacity, with the first phase having 2,000MW of PV cell and 500MW of module capacity. The company owns about 8,000 standard employees. The annual output value reaches RMB ¥10 billion during full-rate production. Adhering to its corporate mission of “striving for excellence, contributing to society”, Tongwei Solar (Hefei) strives to provide the most economical, clean and pro-environment PV products and solar energy solutions to global partners.

At Shuangliu Chengdu, Tongwei set up Tongwei Solar Co., Ltd. in 2009. Specializing in wafer production, Tongwei solar strives to strengthen its competitiveness through investment in downstream solar PV industry, and runs PV projects at Shuangliu New Energy Industrial Park.

Meanwhile, Tongwei Group also takes advantage of abundant solar resources and prime locations in West China, and has built solar plant and irrigation system of 30KW and 5KW in Fengning Hebei, off-grid solar power generation project of 12KW at Ruola, Litang County. In 2011, Tongwei signed an integrated PV strategic cooperation agreement with Xinjiang Government, which included 50,000-ton solar-grade poly-silicon project, 3GW solar wafer and solar cell project, as well as 5 generators of 350,000KW. The project incorporates product manufacturing, production, technique development, photoelectric product application, PV power plant construction, investment operation management, and BIPV project construction.

In Hong Kong, Tongwei invested 100 million US dollars to set up a wholly-owned subsidiaries, Tongwei Solar HK Co., Limited, in 2014. Depending on the global international trade and finance environments of Hong Kong, Tongwei Solar HK has become the main party of international trade of Tongwei Solar, which enjoys a good reputation in the worldwide. The business scopes include I/E of PV cells and modules, purchasing of materials and machines, etc.

Useful Contacts

Contact Face
Tom Liu International Marketing Manager
Contact Face
Joe Chen Overseas Manager

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