Communication method, remaining capacity calculation method, total capacity calculation method, overcharge protection method, information display method, and battery pack

摘要

A variety of information is transmitted to an electronic apparatus by using a microcomputer for low-speed processing and with saved power. A CPU acquires detection data of a thermistor, and detection data, such as the terminal voltage or the discharge current of a battery, at intervals of 10 seconds, through respective interfaces, calculates the remaining capacity and the total capacity of the battery, stores the results and the acquired data as transmission data in a RAM, and transmits this stored transmission data at intervals of one second from a communication interface to an electronic apparatus. Since the CPU transmits the data in one direction independently of the operation of the CPU on the electronic apparatus side, it is possible to greatly lower the operating clock of the CPU and to greatly reduce the consumption of power thereof.