ATA6870-DK10 Microchip

APPLICATION NOTE User Guide for Atmel ATA6870 and Atmel ATmega32HVB Evaluation Kit Hardware ATA6870-DK10 Features Evaluation of Atmel ATA6870 Monitoring of 12 battery cells Monitoring: Overvoltage (every cell) Undervoltage (every cell) Overheating Overcurrent Open clamp detection 12-bit battery cell measurement 12-bit temperature measurement Controlling of charge/discharge FETs Status LEDs for easy evaluation Charge balancing Coulomb counting for SOC determination Figure 1. Atmel ATA6870-DK10 9228C-AUTO-02/151. Introduction The Atmel ATA6870-DK10 is a demonstration board for the Atmel ATA6870, which offers an easy way to start evaluation of battery applications using the Atmel ATmega32HVB in combination with the Atmel ATA6870. The included software demonstrates implementation of a 12 Cell Battery Management System. The supplied code serves as an example of how to use the Atmel ATMega32HVB and Atmel ATA6870 together. The example is not a complete application intended for use with smart batteries, and it is best to use the devices in a slightly different way in a smart battery application. 2. Safety Precautions When Using Li-ion Batteries Please observe the safety guidelines supplied with the batteries. If improperly used or defective, li-ion and polymer batteries and packs may explode and cause a fire. 3. Demonstration Board The Atmel ATA6870-DK10 was developed to allow easy evaluation of control software for a microcontroller which controls multiple Atmel ATA6870s. The sample code supplied demonstrates a simple permanent running measurement of voltages and temperatures. Figure 3-1. Board Concept Cell 12 Cell 11 ATA6870 ATA6870 Cell 02 Cell 01 Monitoring (V,T) Charge/ Coulomb counting Discharge Control Unit ATmega32HVB 2 ATA6870-DK10 APPLICATION NOTE 9228CAUTO02/15