The lead-acid battery is a relatively old battery, has been used for 150 years, the performance is good, but it is difficult to support large current deep discharge; Lead-carbon battery is a new type of super battery. You can understand it as follows: lead-acid battery and supercapacitor are integrated into a lead-carbon battery.
The lead–acid batteries are both tubular types, one flooded with lead-plated expanded copper mesh negative grids and the other a VRLA battery with gelled electrolyte. The flooded battery has a power capability of 1.2 MW and a capacity of 1.4 MWh and the VRLA battery a power capability of 0.8 MW and a capacity of 0.8 MWh.
Lead–acid batteries have been used for energy storage in utility applications for many years but it has only been in recent years that the demand for battery energy storage has increased.
The lead–acid battery is a type of rechargeable battery first invented in 1859 by French physicist Gaston Planté. It is the first type of rechargeable battery ever created. Compared to modern rechargeable batteries, lead–acid batteries have relatively low energy density. Despite this, they are able to supply high surge currents.
Lead-carbon battery is an innovative technology of lead-acid battery, which has many advantages over the lead-acid battery. Lead-carbon batteries have the following advantages: first, they can be charged quickly, increasing the charging speed by 8 times; The discharge power is increased by 3 times.
Each battery is grid connected through a dedicated 630 kW inverter. The lead–acid batteries are both tubular types, one flooded with lead-plated expanded copper mesh negative grids and the other a VRLA battery with gelled electrolyte.