System for supplying power to an apparatus and method for the assessment of the lifetime and capacity of a power-storage device
First Claim
1. An apparatus for assessing the lifetime and capacity of a power storage means for supplying power to a device, said apparatus comprising:
- a first measuring means for measuring a first electrical quantity of the power storage means;
a time determining means for determining a time on reaching a first level of the first electrical quantity characterized by;
a second measuring means for measuring a second electrical quantity of the power storage means; and
a comparator means for comparing the second electrical quantity relative to the determined time with a stored typical time characteristic of the second electrical quantity;
whereby the first electrical quantity either is a voltage or a current, the second electrical quantity then either being the current or the voltage respectively; and
the measurements being applicable during a supply of the device by the power storage means.
1 Assignment
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Accused Products
Abstract
A system for supplying power to an apparatus (170, 175) with a power-storage device (200) for storing electric power, a first measuring device (310) for measuring a first electrical quantity of the power-storage device (200), a time-determining device (360) for determining the time taken for the first electrical quantity to reach a first level, a second measuring device (320) for measuring a second electrical quantity of the power-storage device (200) and a comparator (330) for comparing the second electrical quantity relative to the determined time with a stored typical time-characteristic of the second electrical quantity. Thereby a method of assessing the lifetime and capacity of the power-storage device (200) is used with as a first step (500) the measurement of a first electrical quantity of the power-storage device (200), as a second step (510) the determination of the time taken for the first electrical quantity to reach a first level, as a third step (520) the measurement of a second electrical quantity of the power-storage device (200), as a fourth step (530) the comparison of the second electrical quantity relative to the determined time with a stored typical time-characteristic of the second electrical quantity and as a fifth step (540) the evaluation of the comparison from the fourth step for an assessment of the lifetime and capacity of the power-storage device (200).
18 Citations
15 Claims
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1. An apparatus for assessing the lifetime and capacity of a power storage means for supplying power to a device, said apparatus comprising:
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a first measuring means for measuring a first electrical quantity of the power storage means; a time determining means for determining a time on reaching a first level of the first electrical quantity characterized by; a second measuring means for measuring a second electrical quantity of the power storage means; and a comparator means for comparing the second electrical quantity relative to the determined time with a stored typical time characteristic of the second electrical quantity; whereby the first electrical quantity either is a voltage or a current, the second electrical quantity then either being the current or the voltage respectively; and
the measurements being applicable during a supply of the device by the power storage means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for assessing the lifetime and capacity of a power storage means, for supplying power to a device, said method comprising the steps of:
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a first step of measuring a first electrical quantity of the power storage means; a second step of determining a time at which the first electrical quantity has reached a first level; a third step of measuring a second electrical quantity of the power storage means; a fourth step of comparing the second electrical quantity, relative to the determined time, with a stored typical time characteristics of the second electrical quantity; and a fifth step of evaluating the comparing of the fourth step for assessing the lifetime and capacity of the power storage means; whereby the first electrical quantity either is a voltage or a current, the second electrical quantity then either being the current or the voltage respectively; and
the measurements being applicable during a supply of the device by the power storage means. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification