New Battery Monitoring Unit for HEV/EV Lithium-ion Battery

2011-01-1740

08/30/2011

Event
SAE International Powertrains, Fuels and Lubricants Meeting
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2011-01-1740
Pages
6
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.
Additional Details
Publisher
Published
Aug 30, 2011
Product Code
2011-01-1740
Content Type
Technical Paper
Language
English