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Batteries for 42/14 Volt Automotive Electrical Systems
Technical Paper
2000-01-3065
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The automotive industry is moving to a higher voltage for the electrical system. This change will occur because the total electrical power required by the vehicles will increase to a level where the current requirements at 14 volts will be impractical. Some of the new loads will change the duty cycle of the battery. The most notable change is the proposed start/stop mode of vehicle operation where the engine is stopped and restarted frequently to avoid prolonged operation at idle. An additional feature would be to use an electric motor to assist in acceleration and/or to actually launch the vehicle. This paper addresses the changes in battery requirements brought on by these new features. A means of analysis for choosing the appropriate battery technology is presented. We also propose a life test to establish a benchmark for current battery technology when it is used in a new duty cycle.
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Citation
Crouch, D. and Ballard, G., "Batteries for 42/14 Volt Automotive Electrical Systems," SAE Technical Paper 2000-01-3065, 2000, https://doi.org/10.4271/2000-01-3065.Data Sets - Support Documents
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Also In
SAE 2000 Transactions Journal of Passenger Cars - Electronic and Electrical Systems
Number: V109-7; Published: 2001-09-15
Number: V109-7; Published: 2001-09-15
References
- Kobe, Gerry “The 42-Volt Revolution” Automotive Industries August 1998
- Crouch, Dell Jr. “Batteries for 42/14 Volt Systems” MIT Consortium on Advanced Automotive Electrical/Electronic Components and Systems January 1999
- “The 36 Volt Future” Batteries International January 2000
- Vimont, Michel “42 Volts in a Car - Why?” 42V PowerNet - The First Solutions September 1999
- “OEM+Answers+Rev1.pdf” February 2000
- Miyamoto Etsuo Origuchi Tsuji Hirata Horiba “Development of a Lithium-ion Battery System for HEVs” SAE Technical Paper Series 2000-01-1057 March 2000
- “TMF.doc” Bolder Technologies January 1996
- Linden, David Handbook of Batteries 2nd McGraw-Hill New York 1996
- “Vortex.pdf” www.gnb.com