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New Battery Monitoring Unit for HEV/EV Lithium-ion Battery
Technical Paper
2011-01-1740
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Lithium-ion batteries have higher energy content and power density than Nickel-metal hydride (NiMH) batteries, but require carefully management for durability and safety. Unlike NiMH batteries, which are controlled on a battery unit basis, each lithium-ion cell generates a different voltage. Typically, the complex controllers required to equalize individual cell voltages are large and costly. We have developed a low-cost battery monitoring unit that performs the same function with a proprietary cell-voltage equalizing system. This new unit also offers various innovative technologies, such as detecting overcharge and over-discharge, fault diagnosis and the measurement of the batteries internal resistance to monitor degradation.
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Authors
Citation
Kawase, J. and Maebara, T., "New Battery Monitoring Unit for HEV/EV Lithium-ion Battery," SAE Technical Paper 2011-01-1740, 2011, https://doi.org/10.4271/2011-01-1740.Also In
References
- Institute of Information Technology, Ltd http://www.iit.co.jp
- Battery Association of Japan http://www.baj.or.jp
- http://www.johokiko.co.jp/publishing/BB080202.pdf