New type of lithium battery energy storage efficiency can be up to 95%

The university of Southampton (University of Southampton) and found a new REAP systems cooperative research The lithium batteryAs photovoltaic energy storage device in the system, energy storage efficiency can be improved to 95%, can reduce the cost of solar power.

At present most of the PV systems also use lead-acid The batteryAs energy storage device, but, by contrast, the lithium iron phosphate battery replacement can give full play to its advantages, including higher energy storage efficiency, prolong service life, reduce the unit cost and so on. This type of Lithium electricityPool is used as the energy storage device, can increase the energy efficiency to 95%, far more than 80% of the conventional lead-acid batteries, and has 1600 times the service life of the charge and discharge.

The project, sponsored by REAP systems by MSc students YueWu institute of sustainable energy technology (YueWu) and his supervisor, Dr Carlos Poncede Leon Tom Markvart professor, Dr JohnLow leadership. The project specially research use lithium battery as photovoltaic energy storage device of the system.

Student Yue WuShui, "lead-acid battery is used in most traditional photovoltaic system of energy storage device. However, as the energy storage device, lithium batteries, especially we are using LiFePO4 battery, has the characteristics of better."

The data collection, need to connect the lithium iron phosphate batteries (lithiumiron phosphate battery) and photovoltaic systems, photovoltaic systems   installed on the university buildings and use is provided by REAP systems the special design of battery management system.

Yue said, adding that "the research shows that the lithium battery has 95% of the energy efficiency, and at present commonly used lead-acid batteries, only about 80%.And the weight of the lithium battery is lighter, and more than the lead-acid battery a long service life. Charge and discharge frequency can reach 1600 cycles, meaning they often do not need to change."

Although before commercial photovoltaic power generation systems, batteries are still need further testing. But studies have shown that LiFePO4 battery is expected to improve the efficiency of the solar system, and help to reduce the installation and maintenance costs. Dr Carlos Poncede Leon and Dr John Low is planning and a group of new students to do further study.

REAP systems founder and former researcher at the university of Southampton, Dr Dennis Doerffel said: "for a variety of energy sources (renewable or non-renewable), energy storage device, such as batteries, plays an important role in energy use, compared with the conventional lead-acid batteries, LiFePO4 battery has higher efficiency and longer service life, lighter weight, less cost. We expected to see this kind of battery is widely used in photovoltaic system use, and other renewable energy systems."

The page contains the contents of the machine translation.