Recently, the research group led by Prof. LI Xianfeng and Prof. ZHANG Huamin from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS) have developed a 100 kWh lead-carbon battery energy storage system and successfully connected the system to the grid in Xinghai main capus of DIC. This system mainly provides stable power supply for DICP canteen load and realizes the dynamic balance between power supply, power grid, load, and energy storage, further promoting the development and industrialization of lead-carbon battery technology.

The system consists of solar photovoltaic power generation module, lead carbon battery, grid-connected inverter, power metering system, battery management system, and remote monitoring system. It operates with grid-connected and off-grid mixed operation mode, which facilitates the consumption of renewable energy and provides additional power that is stored in electricity valley for peak load.

Besides, the system can ensure the continuous power supply for canteen load and achieve the dynamic balance between power supply, power grid, load, and energy storage. Specifically, in the off-grid mode, solar photovoltaic power generation module gives priority to the canteen power supply, and the excess energy is used to charge the lead-carbon battery system.

In the grid-connected mode, the power grid charges the battery system when the power demand is low. On the contrary, the battery system discharges its power to ensure canteen power supply during peak hours and abnormal operation of power grid.

100 kWh Energy Storage System of Lead-Carbon Batteries. (Image By YAN Jingwang)

Solar Panels on the Roof of the Dining Hall for Staff & Students. (Image by YAN Jingwang)

DICP has cooperated with FENGFAN co., LTD. since 2015 and established the center of the joint research and development for advanced battery technology, dedicated to the research and development of the advanced technology of lead-carbon battery industrialization. Now, special carbon materials for lead-carbon battery with proprietary intellectual property rights and various models of lead-carbon battery prototype including 12 V/38 Ah, 12 V/150 Ah, and 2 V/1000 Ah have been developed.

The series of lead-carbon batteries jointly developed by both sides have the advantages of long-cycle life, high rechargeable capacity, and low cost, thus showing an excellent application prospect in the field of energy storage.

Control Panel of the 100 kWh Energy Storage System of Lead-Carbon Batteries. (Image by YAN Jingwang)

The project was supported by CAS Strategic Leading Science & Technology Program (A) "transformational clean energy key technologies and demonstration". (Text by YAN Jingwang)

2019.01.02