New Battery Monitoring Unit for HEV/EV Lithium-ion Battery
2011-01-1740
08/30/2011
- Event
- 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.
- 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.