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Optimizing Charge Cycles and Battery Life
Due to its cutting-edge characteristics, Li-ion technology is the first choice for modern high-performance batteries. Li-ion batteries are up to 30% smaller and 50% lighter than conventional NiMH batteries yet store much more energy. While they offer concrete advantages in terms of size, weight, recharge speed and resistance to memory effects, Li-ion batteries do have higher cost compared to other battery types. This can be improved by using a battery management system which optimizes the battery performance. Atmel Li-ion battery management ICs offer high accuracy analog measurement functions in combination with efficient active cell balancing ensuring the optimum usage of the batteries capacity.
Key Features
- Active balancing — Atmel's battery management is the industry's first solution that features active cell balancing for high cell count Li-ion batteries to prevent energy loss.
- Maximum safety — Highest accuracy due to simultaneous cell voltage measurement of the cells in the entire battery stack leading to precise state-of-charge and state-of health calculation.
- Valuable development tools — Atmel’s PC-controlled development kits help you easily build your battery management system and get the most of the battery management devices.
Li-Ion Battery Management Devices
| Device Family |
Summary Benefit |
Applications |
Technologies |
Key Parameters |
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Extended range for electrical vehicles at lower cost
Reduced fuel consumption and CO2 emissions for hybrid vehicles |
Li-Ion battery management
Replacement of 12V standard lead-acid batteries |
Active cell balancing
Simultaneous cell voltage measurement |
High-current active cell balancing
High-accuracy analog measurement functions |
Atmel Li-Ion battery management ICs offer simultaneous cell voltage measurement for the entire battery stack. Measuring the cell voltage of a battery stack at the same time and at the same battery current provides more precise results when calculating the battery's state-of-charge and state-of-health. Active cell balancing with currents in the range of 1A to 3 A enables customers to perform cell balancing during the charging and discharging process. During charging, weak cells can be aligned to ensure that all cells within a stack are charged to their maximum capacity. Energy-efficient active cell balancing during the discharging process allows for feeding weak cells with the energy of stronger cells. This permits to fully utilize the capacity of all cells within a stack until the last Coulomb. The cell voltage measurement and active cell balancing features help to maximize the available battery capacity, extend the cruising range of electrical vehicles, and to reduce cost.
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