초록 ▼

A smart battery device which provides electrical power and which reports predefined battery parameters to an external device having a power management system, includes: at least one rechargeable cell connected to a pair of terminals to provide electrical power to an external device during a discharg

A smart battery device which provides electrical power and which reports predefined battery parameters to an external device having a power management system, includes: at least one rechargeable cell connected to a pair of terminals to provide electrical power to an external device during a discharge mode and to receive electrical power during a charge mode, as provided or determined by the remote device; a data bus for reporting predefined battery identification and charge parameters to the external device; analog devices for generating analog signals representative of battery voltage and current at said terminals, and an analog signal representative of battery temperature at said cell; a hybrid integrated circuit (IC) having a microprocessor for receiving the analog signals and converting them to digital signals representative of battery voltage, current and temperature, and calculating actual charge parameters over time from the digital signals, the calculations including one calculation according to the following algorithm; CAPrem=CAPFC-SdDd-SsDSecIcDc wherein ec is a function of battery current and temperature; and Is is a function of battery temperature and CAPFC. Superimposed on this equation is reset logic, that self corrects the value of CAPFC with a capacity calculation at each full charge (EOC) and each end of full discharge.

대표청구항 ▼

A combination portable computer-rechargeable battery, comprising: a portable computer; a rechargeable battery system including i) terminal means connected to the portable computer, ii) a rechargeable battery including at least one rechargeable battery cell connected to the terminal means, iii) means

A combination portable computer-rechargeable battery, comprising: a portable computer; a rechargeable battery system including i) terminal means connected to the portable computer, ii) a rechargeable battery including at least one rechargeable battery cell connected to the terminal means, iii) means to sense, and to generate signals representing, battery voltage, battery temperature, and battery current, iv) a processor for receiving the signals representing battery voltage, battery temperature and battery current, and for performing predefined calculations using said signals to calculate values for defined variables, and v) a memory area for storing data values including at least values representing battery voltage, battery temperature and battery current; a data bus connected to the portable computer and the battery system to transmit data between the portable computer and the battery system; wherein the portable computer includes means for transmitting messages over the data bus to the processor requesting said calculated values; wherein the processor includes means for receiving the messages from the computer and, in response to receiving said messages, transmitting to the computer the calculated values; said means for receiving the message having an abled state and a disabled state; in the abled state, the receiving means is able to receive requests from the computer; and in the disabled state, the receiving means is disabled from receiving requests from the computer; and further wherein the processor performs said predefined calculations at regular periods, each of said periods having first and second intervals; and during the first interval of each of said periods, the processor performs said predefined calculations and places the receiving means in the disabled state.