OPERATION OF NICKEL-HYDROGEN STORAGE BATTERY ON ARTIFICIAL EARTH SATELLITE Russian patent published in 2010 - IPC H01M10/44 

FIELD: electrical engineering.

SUBSTANCE: proposed method consists in charging storage batteries with their pressure and temperature being limited, discharging them, storing in charged state, recharging to compensate for self-discharge and periodical milking by pulse current. Charging or milking over, storage battery capacity maximum unbalance is calculated by the formula: ΔC=(P_max-P_min)·k, where P_max is maximum storage battery pressure; P_min is minimum storage battery pressure; k is factor to convert storage battery hydrogen pressure into capacity. Given notable difference in current capacity, self-discharge currents are defined by the formula: Ic_i=ΔP_ci·k/Δτc_i; where Ic_i is storage battery self-discharge current; ΔPC_j is oxygen pressure reduction for design time interval Δτc_i. Given equal self-discharge currents, within the limits of measurement error, milking by pulsed current equal to mean integral current calculated by the formula below is performed: I_ch=(1÷1.2)·(Ic+ΔI), where ΔI=ΔC·m_max, where m_max is coefficient of self-discharge current linear section inclination at maximum current capacity (pressure) defined by the formula: m_max=Ic/C_cur.min, while at unequal self-discharge currents, milking by pulsed current is performed by mean integral current calculated by the formula: I_ch=(1÷1.2)·(Ic_max+ΔI), where Ic_max is maximum self-discharge current (self-discharge current with minimum current pressure).

EFFECT: higher reliability.

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