Miniature Sealed Nickel-Cadmium Batteries
Abstract
The purpose of this program has been to design, develop, fabricate, and test miniature high-rate sealed nickel-cadmium batteries of the button cell construction. The battery types are BB-683()/U (50mAh), BB-684()/U (100mAh), BB-685()/U (150mAh), and BB-686()/U (250mAh). The program was carried out as follows: design parameter study to select prototype models, qualification tests on the prototype batteries in accordance with the specification SCL-6899A, fabrication, and delivery of 100 cells and 20 12-volt batteries of each type. Within the cell dimension and weight limits imposed, the selection of the prototype batteries included investigations on two basic design assemblies; i.e., a 2-plate design and a 4-plate design. The prototype design for the 50 mAh battery is the 2-plate construction; i.e., one positive and one negative. The other three types are of the 4-plate construction; i.e., two positives and two negatives. The four prototype designs met all the requirements (dimensions, weights, electrical, and other environmental tests). The weights of the three-4-plate batteries (100, 150, and 250 mAh sizes) were 8.3, 10.3, and 14.3 g compared to the requirements of 11.34, 12.76, and 17.01 g maximum. In general the minimum capacity requirements were easily exceeded. Batteries of each type are on long life cycle test. The batteries have passed the minimum 56 cycles that was required before the fabrication of the delivery items. The qualification test results show that the program was successfully accomplished.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1973
- Accession Number
- AD0913104
Entities
People
- Claude J. Menard
- John R. Walsh
- Kenneth C. Kohl