Extended life battery
First Claim
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1. A method in a battery system comprising a plurality of battery cores, the method comprising:
- receiving a pulse sequence of two or more pulses; and
transferring energy from at least a first battery core of the battery system to at least a second battery core of the battery system in accordance with the pulse sequence and only when the first and second battery cores are not supplying power to an external load, wherein at least one parameter of the pulse sequence is determined based on at least one parameter of the first battery core and/or the second battery core, including;
a charging current, a discharging current, a cell voltage, an internal impedance, and a number of charge/discharge cycles.
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Abstract
Methods and apparatuses are described for use in preserving and/or recovering the lifetime and charge storage capacity of batteries. The methods include pulse charging, energy juggling, energy leveling, all resulting in extended battery life. Methods of storing batteries for maintaining their capacity at their nominal level for extended periods of time are also presented.
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Citations
26 Claims
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1. A method in a battery system comprising a plurality of battery cores, the method comprising:
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receiving a pulse sequence of two or more pulses; and transferring energy from at least a first battery core of the battery system to at least a second battery core of the battery system in accordance with the pulse sequence and only when the first and second battery cores are not supplying power to an external load, wherein at least one parameter of the pulse sequence is determined based on at least one parameter of the first battery core and/or the second battery core, including;
a charging current, a discharging current, a cell voltage, an internal impedance, and a number of charge/discharge cycles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 23)
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18. A battery system, comprising:
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one or more battery cores; and a controller system operative to; receive a pulse sequence of two or more pulses; and transfer energy from at least a first battery core of the battery system to at least a second battery core of the battery system in accordance with the pulse sequence and only when the first and second battery cores are not supplying power to an external load, wherein at least one parameter of the pulse sequence is determined based on at least one parameter of the first battery core and/or the second battery core, including;
a charging current, a discharging current, a cell voltage, an internal impedance, and a number of charge/discharge cycles. - View Dependent Claims (19, 20, 21, 24)
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22. A controller system for a battery system comprising one or more battery cores, the controller system comprising:
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a memory having stored thereon processing instructions; and a processing unit to process the processing instructions to; receive a pulse sequence of two or more pulses; and transfer energy from at least a first battery core of the battery system to at least a second battery core of the battery system in accordance with the pulse sequence and only when the first and second battery cores are not supplying power to an external load, wherein at least one parameter of the pulse sequence is determined based on at least one parameter of the first battery core and/or the second battery core, including;
a charging current, a discharging current, a cell voltage, an internal impedance, and a number of charge/discharge cycles. - View Dependent Claims (25)
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26. A method in a battery system comprising a plurality of cores, the method comprising:
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receiving a pulse sequence of two or more pulses; and transferring energy in accordance with the pulse sequence from a first battery core of the battery system to a second battery core of the battery system that has more energy stored therein than in the first battery core, the transferring occurring only when both the first battery core and the second battery core are not supplying power to an external load or being charged.
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Specification