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公开(公告)号：DE69633656T2
公开(公告)日：2005-03-24
申请号：DE69633656
申请日：1996-12-11
Applicant: COMPAQ COMPUTER CORP
Inventor： MCCONKEY STEVEN K , MITCHELL NATHAN A , FREIMAN JOSEPH F
Abstract: A computer system is powered by a battery pack, but the battery pack can use either nickel-based batteries or lithium-ion based batteries. Either of the two battery packs can be interchanged without modification to the system.
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Patent Agency Ranking
公开(公告)号：AU3474993A
公开(公告)日：1993-09-01
申请号：AU3474993
申请日：1993-01-20
Applicant: COMPAQ COMPUTER CORP
Inventor： HESS RANDALL L , COOPER PATRICK R , INTERIANO ARMANDO , FREIMAN JOSEPH F
Abstract: A battery charge controller and fuel gauge which accurately monitors the voltage, temperature, and charge and discharge current of a rechargeable battery, and calculates the battery's charge capacity and charge level. Each time the battery is fully discharged, any calculated charge level remaining is divided by two and subtracted from the previously calculated charge capacity. When the battery is fully charged, the charge level is set equal to the charge capacity. During subsequent charge and discharge, the current is converted to a coulomb count and added or subtracted from the charge level to maintain an accurate charge level. Fast charge inefficiency due to temperature is considered by subtracting a temperature proportional factor before the charge level of the battery is updated. The charge level, voltage and temperature are used to determine the optimal fast charge termination point to achieve full charge and prevent temperature abuse and overcharge. A fast charge is applied only if the battery is within proper voltage and temperature ranges. The charge controller includes a microcontroller circuit within the same battery pack as the battery, which is powered by the battery when AC power is unavailable. The microcontroller circuit consumes very little power, measures circuit errors to assure data accuracy, times periods of self-discharge and updates the charge level accordingly. The microcontroller circuit also includes memory to store the battery charge information and a communication port to provide the charge information to a computer system connected to the battery pack.
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公开(公告)号：CA2106672A1
公开(公告)日：1993-08-05
申请号：CA2106672
申请日：1993-01-20
Applicant: COMPAQ COMPUTER CORP
Inventor： HESS RANDALL L , COOPER PATRICK R , INTERIANO ARMANDO , FREIMAN JOSEPH F
IPC: G01R31/382 , G01R31/00 , G01R31/36 , G01R31/374 , G01R31/378 , G01R31/3832 , H01M10/44 , H01M10/48 , H02J7/00
Abstract: ABSTRACT BATTERY CHARGE MONITOR AND FUEL GAUGE A battery charge controller and fuel gauge which accurately monitors the voltage, temperature, and charge and discharge current of a rechargeable battery, and calculates the battery's charge capacity and charge level. Each time the battery is fully discharged, any calculated charge level remaining is divided by two and subtracted from the previously calculated charge capacity. When the battery is fully charged, the charge level is set equal to the charge capacity. During subsequent charge and discharge, the current is converted to a coulomb count and added or subtracted from the charge level to maintain an accurate charge level. Fast charge inefficiency due to temperature is considered by subtracting a temperature proportional factor before the charge level of the battery is updated. The charge level, voltage and temperature are used to determine the optimal fast charge termination point to achieve full charge and prevent temperature abuse and overcharge. A fast charge is applied only if the battery is within proper voltage and temperature ranges. The charge controller includes a microcontroller circuit within the same battery pack as the battery, which is powered by the battery when AC power is unavailable. The microcontroller circuit consumes very little power, measures circuit errors to assure data accuracy, times periods of self-discharge and updates the charge level accordingly. The microcontroller circuit also includes memory to store the battery charge information and a communication port to provide the charge information to a computer system connected to the battery pack.
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公开(公告)号：DE69633656D1
公开(公告)日：2004-11-25
申请号：DE69633656
申请日：1996-12-11
Applicant: COMPAQ COMPUTER CORP
Inventor： MCCONKEY STEVEN K , MITCHELL NATHAN A , FREIMAN JOSEPH F
Abstract: A computer system is powered by a battery pack, but the battery pack can use either nickel-based batteries or lithium-ion based batteries. Either of the two battery packs can be interchanged without modification to the system.
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公开(公告)号：AT174126T
公开(公告)日：1998-12-15
申请号：AT93903516
申请日：1993-01-20
Applicant: COMPAQ COMPUTER CORP
Inventor： HESS RANDALL L , COOPER PATRICK R , INTERIANO ARMANDO , FREIMAN JOSEPH F
Abstract: A battery charge controller and fuel gauge which accurately monitors the voltage, temperature, and charge and discharge current of a rechargeable battery, and calculates the battery's charge capacity and charge level. Each time the battery is fully discharged, any calculated charge level remaining is divided by two and subtracted from the previously calculated charge capacity. When the battery is fully charged, the charge level is set equal to the charge capacity. During subsequent charge and discharge, the current is converted to a coulomb count and added or subtracted from the charge level to maintain an accurate charge level. Fast charge inefficiency due to temperature is considered by subtracting a temperature proportional factor before the charge level of the battery is updated. The charge level, voltage and temperature are used to determine the optimal fast charge termination point to achieve full charge and prevent temperature abuse and overcharge. A fast charge is applied only if the battery is within proper voltage and temperature ranges. The charge controller includes a microcontroller circuit within the same battery pack as the battery, which is powered by the battery when AC power is unavailable. The microcontroller circuit consumes very little power, measures circuit errors to assure data accuracy, times periods of self-discharge and updates the charge level accordingly. The microcontroller circuit also includes memory to store the battery charge information and a communication port to provide the charge information to a computer system connected to the battery pack.
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公开(公告)号：SG48528A1
公开(公告)日：1998-04-17
申请号：SG1997001441
申请日：1997-05-09
Applicant: COMPAQ COMPUTER CORP
Inventor： FREIMAN JOSEPH F , MCCONKEY STEVEN K , MITCHELL NATHAN A
Abstract: A battery pack of a computer system includes a battery having a nominal critical terminal voltage that may not be exceeded without hazardous failure of the battery. The battery pack includes a controller for routing power from an external power source to the battery to recharge the battery. The controller is configured to apply a time profile of charging power to the terminals of the battery. The profile includes time portions when the terminal voltage of the battery exceeds the nominal rated critical terminal voltage. The controller is also configured to control the time profile to prevent hazardous failure of the battery.
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