Back-up power system
First Claim
1. A back-up power system having a monitoring system for determining and for allowing remote monitoring of a back-up time that can be provided by a plurality of batteries, at all time, in a given application requiring a given current load said back-up power system comprising:
- a plurality of batteries, each having an integrated circuit adapted to monitor individual battery'"'"'s state of health based on an internal resistance measurement; and
a data management unit operative to evaluate the back-up time available from said plurality of batteries based on a sum of individual battery available capacity, a measured ambient temperature and a continuously updated measured application current load a communication link for exchanging data with a remote user, said available back-up time and said measured application current load being accessible to the remote user via said communication link.
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Accused Products
Abstract
A back-up power system having a monitoring system for determining, and for allowing remote monitoring of, a back-up time can be provided by a plurality of batteries for a given application, at all times. The back-up power system includes a plurality of batteries, each having an integrated circuit adapted to monitor individual battery'"'"'s state of health. The back-up power system also includes a data management unit for evaluating the back-up time available from the plurality of batteries based on a sum of individual battery available capacity, a measured ambient temperature and a continuously updated measured application current load. The available back-up time and the measured application current load are accessible to a remote user via a communication link.
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Citations
15 Claims
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1. A back-up power system having a monitoring system for determining and for allowing remote monitoring of a back-up time that can be provided by a plurality of batteries, at all time, in a given application requiring a given current load said back-up power system comprising:
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a plurality of batteries, each having an integrated circuit adapted to monitor individual battery'"'"'s state of health based on an internal resistance measurement; and
a data management unit operative to evaluate the back-up time available from said plurality of batteries based on a sum of individual battery available capacity, a measured ambient temperature and a continuously updated measured application current load a communication link for exchanging data with a remote user, said available back-up time and said measured application current load being accessible to the remote user via said communication link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15)
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12. A method for determining the back-up time that can be provided by a plurality of batteries, at all time, in a given application requiring a given current load, the method comprising the steps of:
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coupling a plurality of batteries to a data management unit;
each battery of said plurality of batteries having an integrated circuit adapted to monitor individual battery'"'"'s parameters, and at least one heating element for controlling individual battery internal temperature;
coupling an application current load reading device and an ambient temperature reading device to said data management unit;
determining an initial battery capacity based on individual battery'"'"'s state of health;
said state of health defined by an internal resistance measurement;
calculating individual battery'"'"'s delivered capacity;
correlating an expected battery capacity consumed by said at least one heating element of each said battery based on a measured ambient temperature;
calculating total available capacity of said plurality of batteries by subtracting said expected battery capacity consumed by said at least one heating element of each said batteries and said delivered capacity from said initial battery capacity to obtain individual battery available capacity;
the sum of all individual battery available capacity being the total available capacity of said plurality of batteries;
calculating back-up time available from said plurality of batteries by dividing total available capacity by a measured current load obtained from said current load reading device; and
having said back-up time information accessible for remote monitoring at all time. - View Dependent Claims (13, 14)
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Specification