| Autor: |
J.P. Smaha, X. Muneret, C. Brissaud, G. Reumont, P. Lenain |
| Rok vydání: |
2005 |
| Předmět: |
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| Zdroj: |
The Second International Telecommunications Energy Special Conference. |
| Popis: |
Laboratory-based accelerated life tests have been carried out to evaluate the service life of Valve-Regulated Lead/Acid (VRLA) batteries with Absorptive Glass Mat (AGM) construction. Tests are focused on the influence of tin level on the corrosion of the Lead-Calcium-Tin (Pb-Ca-Sn) positive grid alloys of such batteries. Investigations have been carried out using Linear Sweep Voltammetry (LSV) experiments on samples of grids and by using a specific accelerated life test on industrially built cells. The different structural and morphological methods of analysis show that the cells failed because of corrosion of the positive grids. For the Pb-Ca-Sn alloys studied, the higher the level of tin, the less the corrosion of the positive grids. The correlation between the specific accelerated life test and the service life of the batteries in actual use previously established, allows the life expectancy of the cells which were studied to be determined. For the level of calcium which was used, the life expectancy of the VRLA batteries with a low level of tin alloy is between 7 and 10 years and between 10 and 13 years for the VRLA batteries with a high level of tin. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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