3 months on-orbit, and withstood the severe condition of space radiation, temperature shock and overcharge. Th Ni-Cd battery remained sealed. Analysis of Flight Performance Table II shows the performance of the SES (launched March 1971). It can be seen from Table II that: 1. The Ni-Cd battery is capable of withstanding long-term overcharging. For example, during the period of on-orbit flight, the battery had been overcharged for 14-20 days, with C/8-C/6. The charge voltage of every cell was up to 1.65-1.60 V. at — 5°C-0°C. In deeper discharge; the cell discharge voltage was 1.30 V-1.25 V; under this condition, the battery remained sealed. 2. The difference of design and telemetry data for the power output of the solar array is within ± 2%. We will emphasize the following areas in future work: 1. Enhancement of the conversion efficiency of silicon solar cells and improvement of the ability to withstand temperature and radiation. 2. Enhancement of the energy density of hermetically sealed nickel-cadmium batteries and development of nickel-hydrogen batteries. 3. Development of power conditioning with high reliability and varied functions in the solar cells—the storage battery system.
RkJQdWJsaXNoZXIy MTU5NjU0Mg==