TAILIEUCHUNG - Progress towards an advanced lead–acid battery for use in electric vehicles

The attributes which are essential for a battery to be successful as the energy store for an electric vehicle are reviewed. These are then matched against the substantial advances in the technology of valve-regulated lead–acid ŽVRLA. batteries that have been posted during the course of the technical programme of the Advanced Lead–Acid Battery Consortium ŽALABC A project which was designed to draw together several desirable features, identified during the early years of the ALABC programme, into a test battery has provided much useful information. . | ELSEVIER Journal of Power Sources 78 1999 244-250 Progress towards an advanced lead-acid battery for use in electric vehicles . Moseley a A. Cooper b a Advanced Lead-Acid Battery Consortium Post Office Box 12036 Research Triangle Park NC 27709-2036 USA b European Advanced Lead-Acid Battery Consortium Lead Development Association International 42 Weymouth Street London WIN 3LQ UK Abstract The attributes which are essential for a battery to be successful as the energy store for an electric vehicle are reviewed. These are then matched against the substantial advances in the technology of valve-regulated lead-acid VRLA batteries that have been posted during the course of the technical programme of the Advanced Lead-Acid Battery Consortium ALABC . A project which was designed to draw together several desirable features identified during the early years of the ALABC programme into a test battery has provided much useful information. The design target for specific energy 36 W h kg-1 has been achieved successfully. Cycle-life is short but it appears likely that an inappropriate charging regime with an unrestricted charge factor was largely responsible. Benchmark tests with a commercial product also yield very short life with this regime but provide good performance when the charge factor is kept in check. Attention to the deployment of suitable charging regimes continues to be a fruitful area in extending the life of VRLA batteries and the ALABC s programme to enhance both specific energy and life while shortening recharge time is making good progress. 1999 Elsevier Science . All rights reserved. Keywords Cycle-life Electric vehicle Lead-acid batteries Rapid recharge Specific energy Valve-regulated 1. Essential characteristics for electric vehicles Ever since the Air Resources Board in California proposed 1 at the beginning of the 1990s to mandate the sale of large numbers of electric vehicles by the major automobile manufacturers there has been a vigorous debate .

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