The electrical performance of Ag/Zn batteries for the Venus multi-probe mission. [5- and 21-Ah batteries]

Technical Report · Sun Jun 01 04:00:00 EDT 1975

OSTI ID:7339371

Palandati, C

An evaluation of 5-Ah and 21-Ah silver--zinc batteries was made to determine their suitability to meet the energy storage requirements of the bus vehicle, 3 small probes, and large probe for the Venus multi-probe mission. The evaluation included a 4-Ah battery for the small probe, a 21-Ah battery for the large probe, one battery of each size for the bus vehicle power, a periodic cycling test on each size battery, and a wet stand test of charged and discharged cells of both cell designs. The study on the probe batteries and bus vehicle batteries included both electrical and thermal simulation for the entire mission. The effects on silver migration and zinc penetration of the cellophane separators caused by the various test parameters were determined by visual and x-ray fluorescence analysis. The 5-Ah batteries supported the power requirements for the bus vehicle and small probe. The 21-Ah large probe battery supplied the required mission power. Both probe batteries delivered in excess of 132 percent of rated capacity at the completion of the mission simulation. (auth)

• Research Organization: National Aeronautics and Space Administration, Greenbelt, Md. (USA). Goddard Space Flight Center
• OSTI ID: 7339371
• Report Number(s): N-75-32588; NASA-TM-X-72876; X-711-75-197
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250902* -- Energy Storage-- Batteries-- Performance & Testing
BATTERY SEPARATORS
DIFFUSION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELEMENTS
ENERGY STORAGE SYSTEMS
METAL-METAL OXIDE BATTERIES
METALS
PERFORMANCE TESTING
SILVER
SILVER-ZINC BATTERIES
SIMULATION
SPACE VEHICLES
TESTING
TRANSITION ELEMENTS
ZINC