Research on Ni - MH power battery for HEV

The research on Ni - MH power battery for HEV was introduced. High rate charge and discharge performance, high and low temperature performance were improved by adjusting and modifying the composition of positive electrode, and adopting special hydrogen-storing alloy powder for Ni - MH power battery and dual - head sealed structure. Energy density of more than 56Wh/kg and power density of more than 700W/kg were achieved. The cycle life was over 100 000 times at simulated working status.