40Ah H_2/Ni空间储能电源充放电特性研究

组装40Ah氢镍电池,研究该空间储能电源充放电性能.结果表明,在环境温度0～10℃之间电池放电容量最高(达50A·h),放电过程电池温度升高10℃,过放电后,电池电压降至-0.2V左右,电池温度逐升,过充电时,电池电压先升后降,温度激升;该电池以57%DOD(depth of discharge)充放电,经循环2350次,放电电压仍可稳定于1.2V,电池电性能无减.

The Charge-Discharge Properties of 40 Ah Aerospace Nickel Hydrogen Cell

In present investigation,40 Ah nickel-hydrogen cell has been manufactured and its charge-discharge properties has been performed.The results indicate that the cell exhibited the best discharge capacity(50 Ah) when the test conditions were between 0~10 ℃,on the other hand,the cell accompanied with temperature being raised to 10 ℃ while the cell was subjected to discharge operating.The cell voltage decreased to -0.2 V and the cell temperature increased continuously during the over-discharge test.The cell voltage was first increased and then decreased,but the cell temperature was climbed rapidly while the cell was performed during the over-charge test.The 40 Ah nickel-hydrogen cell has excellent discharge cut-off voltage of 1.2 V after 2350 life cycles with 57 DOD%.