Abstract:

A supervising and measuring system of serial lithium-ion batteries which base on MCS51 series microcontrollers is introduced.The system measures the voltage of serial lithium-ion batteries by using differential amplifier and analog multiplexers.A one-wire bus measuring system with MCS51 and DS18B20 has been developed for the system of serial lithium-ion batteries.The system is simple and cheap.Tests show that the system is capable of reliable and accurate supervision and measurement of serial lithium-ion batteries.

Key words: serial lithium-ion batteries;differential amplifier;one-wire bus