Abstract:

Abstract：The design and performance of 100 kW/200 kW·h MH-Ni stationary energy storage system are reported. Due to its superior charge and discharge power characteristic, high safety, environmental friendliness, excellent low temperature performance and easiness to balance the single cells in a battery pack, MH-Ni battery is suitable for hybrid electric vehicles and stationary energy storage applications. In this storage system, MH-Ni cell of 100 A·h was designed, with the advantages of optimized power and energy, low impedance, wide operating temperature range and long cycle life The cells were connected in series to form a 12 V/100 A·h battery module and a sub-system of 380 V/100 A·h was assembled. A battery management system, with functions of low energy consumption, anti-interference, stable and reliable voltage, current, temperature detection circuit and heat dissipation, was designed and fabricated. An energy storage system was fabricated using the battery management system and six sub-system units.

Key words: nickel-metal hydride (MH-Ni) battery, energy storage system, the battery management system