YIYEN Electrical

YIY —  Inverter / Voltage Stabiliser  Manufacturer!

YIY —  Inverter / Voltage Stabiliser  Manufacturer!

Yiyuan Electric Co., Ltd. is a high and new tech enterprise specialised in manufacturing electrical power products for power supply systems. There main products are Automatic voltage regulators ( AVR), Uninterruptible power suppliers (UPS), Inverters (INV), Emergency power source (EPS), Battery chargers and Battery Energy Storage System (ESS) etc.

YIY inverter are widely used in Commercial, Residential, Industrial applications and used in the UPS market, utility market, RV market and all forms of  renewable energy systems.

As a result of oYIY's attention to quality and reliability, there products have been approved by TLC & CCCF. And have attained CE, TUV, FCC, PCT including  ISO9001 certifications, with UL pending. In addition to economical prices and customer service, it enabled YIYEN Electrical to gain popularity and a good reputation in the global market.

YIY's mission is to build a mature, efficient and skilled R&D team by investing 10% of there annual turnover to recruiting top technicians so that advancement and innovation of product design provide competitive advantages to meet customers’ requirements.

YIYEN Electrical have eight years of production, making them one of the best selling on the world market, like North America, Canada, Europe, Russia, Southeast Asia, Africa, Mid-east regions etc, resulting in excellent reputation from the customers all over the world.

  • Yiyuan Electric Co., Ltd was founded in 2008
  • Wenzhou Yiyuan Imp & Exp Co., Ltd was founded 2009
  • Shenzhen Yiyuan Technology Co., Ltd was founded in 2011
  • YueQing YiYuan Electric Technology Co., Ltd was founded in 2014

YIY dedicate themselves to quality serve to all customers, and partners to maximise mutual benefits between them as an establish long-term business.




The advantage of Lithium Iron Phosphate (LiFePO4)

Lifepo4 offers good electrochemical performance with low resistance. This is made possible with nano-scale phosphate cathode material. The key benefits are high current rating and long cycle life, besides good thermal stability, enhanced safety and tolerance if abused.

Li-phosphate is more tolerant to full charge conditions and is less stressed than other lithium-ion systems if kept at high voltage for a prolonged time. As a trade-off, its lower nominal voltage of 3.2V/cell reduces the specific energy below that of cobalt-blended lithium-ion. With most batteries, cold temperature reduces performance and elevated storage temperature shortens the service life, and Li-phosphate is no exception. Li-phosphate has a higher self-discharge than other Li-ion batteries, which can cause balancing issues with aging. This can be mitigated by buying high quality cells and/or using sophisticated control electronics, both of which increase the cost of the pack.

Li-phosphate is often used to replace the lead acid starter battery.  With four Li-phosphate cells in series, each cell tops at 3.60V, which is the correct full-charge voltage. At this point, the charge should be disconnected but the topping charge continues while driving. Li-phosphate is tolerant to some overcharge; however, keeping the voltage at 14.40V for a prolonged time, as most vehicles do on a long drive, could stress Li-phosphate. Cold temperature operation starting could also be an issue with Li-phosphate as a starter battery.

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