Method and system for accurately reporting battery capacity
First Claim
1. A method of determining the capacity of a battery, comprising the steps ofdetermining if the battery is in a transition phase;
- determining the battery capacity based on a transition phase battery capacity model when the battery is in the transition phase,wherein the transition phase occurs upon one of connection of the battery to a power source and disconnection of the battery from a power source, and the behaviour described by the transition phase battery capacity model approaches the behaviour of real transition phase battery capacity so as to minimize the error of the determined battery capacity;
wherein the step of determining the battery capacity based on a transition phase battery capacity model comprises the steps of;
determining a battery ID of the battery;
selecting the transition phase battery capacity model from a plurality of transition phase battery capacity models based on the battery ID, wherein each of the plurality of transition phase battery capacity models corresponds to a predetermined battery ID;
determining a battery voltage.
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Abstract
A method and a system for accurately reporting battery capacity that do not rely on a coulomb counter are disclosed herein. The method comprises the steps of determining if the battery is in a transition phase and determining the battery capacity based on a transition phase battery capacity model when the battery is in the transition phase. The transition phase occurs upon one of attachment of the battery to a power source and disconnection of the battery from the power source. The behaviour described by the transition phase battery capacity model approaches the behaviour of real transition phase battery capacity so as to minimize the error of the determined battery capacity. The method and system accurately report battery capacity during a transition phase from discharging to charging and a transition phase from charging to discharging.
19 Citations
54 Claims
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1. A method of determining the capacity of a battery, comprising the steps of
determining if the battery is in a transition phase; -
determining the battery capacity based on a transition phase battery capacity model when the battery is in the transition phase, wherein the transition phase occurs upon one of connection of the battery to a power source and disconnection of the battery from a power source, and the behaviour described by the transition phase battery capacity model approaches the behaviour of real transition phase battery capacity so as to minimize the error of the determined battery capacity; wherein the step of determining the battery capacity based on a transition phase battery capacity model comprises the steps of; determining a battery ID of the battery; selecting the transition phase battery capacity model from a plurality of transition phase battery capacity models based on the battery ID, wherein each of the plurality of transition phase battery capacity models corresponds to a predetermined battery ID; determining a battery voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of determining the capacity of a battery, comprising the steps of
determining if the battery is in a transition phase; -
determining the battery capacity based on a transition phase battery capacity model when the battery is in the transition phase, wherein the transition phase occurs upon one of connection of the battery to a power source and disconnection of the battery from a power source, and the behaviour described by the transition phase battery capacity model approaches the behaviour of real transition phase battery capacity so as to minimize the error of the determined battery capacity, wherein the transition phase is one of a first transition phase from discharging to charging and a second transition phase from charging to discharging, and the transition phase battery capacity model is one of a first transition phase battery capacity model corresponding to the first transition phase from discharging to charging and a second transition phase battery capacity model corresponding to the second transition phase from charging to discharging. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of determining the capacity of a battery, comprising the steps of
determining if the battery is in a transition phase; -
determining the battery capacity based on a transition phase battery capacity model when the battery is in the transition phase, wherein the transition phase occurs upon one of connection of the battery to a power source and disconnection of the battery from a power source, and the behaviour described by the transition phase battery capacity model approaches the behaviour of real transition phase battery capacity so as to minimize the error of the determined battery capacity; wherein the step of determining the battery capacity based on a transition phase battery capacity model comprises the steps of determining a battery ID of the battery; determining a current battery operating temperature, and selecting a transition phase battery capacity model from a plurality of transition phase battery capacity models according to the battery ID and the current battery operating temperature, wherein each of the plurality of transition phase battery capacity models corresponds to a predetermined battery ID and a predetermined battery operating temperature range. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method of determining the capacity of a battery, comprising the steps of:
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determining if the battery is in a transition phase; determining the battery capacity based on a transition phase battery capacity model when the battery is in the transition phase, wherein the transition phase occurs upon one of connection of the battery to a power source and disconnection of the battery from a power source, and the behaviour described by the transition phase battery capacity model approaches the behaviour of real transition phase battery capacity so as to minimize the error of the determined battery capacity;
further comprising the steps ofdetermining a state of the battery if the battery is not in the transition phase, and determining the battery capacity by examining a state curve model of the correlation between battery voltage, battery state and battery capacity based on the determined state. - View Dependent Claims (36, 37, 38, 39, 40)
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41. A system for determining the capacity of a battery, the system comprising
transition phase determining means operatively connected to the battery for determining if the battery is in a transition phase; -
battery capacity determining means operatively connected to the transition phase determining means for determining the battery capacity based on a transition phase battery capacity model if the battery is in the transition phase, wherein the transition phase occurs upon one of connection of the battery to a power source and disconnection of the battery to a power source, and the behaviour described by the transition phase battery capacity model approaches a behaviour of a real transition phase battery capacity so as to minimize the error of the determined battery capacity; battery ID determining means operatively connected to the battery for determining a battery ID of the battery; and means for selecting a transition phase battery capacity model from a plurality of transition phase battery capacity models based on the battery ID, operatively connected to the battery ID determining means, each of the plurality of transition phase battery capacity models corresponding to a predetermined battery ID. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48)
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49. A handheld device having a system for determining the capacity of a battery, the system comprising
transition phase determining means operatively connected to the battery for determining if the battery is in a transition phase; -
battery capacity determining means operatively connected to the transition phase determining means for determining the battery capacity based on a transition phase battery capacity model if the battery is in the transition phase, and wherein the transition phase occurs upon one of connection of the battery to a power source and disconnection of the battery to the power source, and the behaviour described by the transition phase battery capacity model approaches a behaviour of a real transition phase battery capacity so as to minimize the error of the determined battery capacity; battery ID determining means operatively connected to the battery for determining an battery ID of the battery; and means for selecting a transition phase battery capacity model from a plurality of transition phase battery capacity models based on the battery ID, operatively connected to the battery ID determining means, wherein each of the plurality of transition phase battery capacity models corresponds to a predetermined battery ID. - View Dependent Claims (50, 51, 52, 53, 54)
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Specification