Battery transposition system and method
First Claim
1. A battery transposition power supply to constantly supply at least two voltages having a common ground, a first voltage and a second voltage less than the first voltage, the battery transposition power supply comprising:
- a first group of at least two series connected battery subgroups for supplying the first voltage, said first group of batteries including battery subgroups A and B, each having first and second terminals, the battery transposition power supply providing the second voltage from a battery subgroup of said first group including at least one battery;
a plurality of selectable battery interconnections connecting said first and second terminals of said battery subgroups for supplying the first voltage, and for selectively supplying the second voltage and common ground from different battery subgroups of said first group as follows;
when battery sub group B is selected to provide the second voltage and common ground, said battery interconnections connecting said second terminal of battery subgroup A to said first terminal of battery Subgroup B to provide the first voltage between said first terminal of battery subgroup A and said second terminal of battery subgroup B, said battery interconnections also connecting to supply the second voltage between said first and second terror-sis of battery subgroup B, wherein said second terminal of battery subgroup B is the ground common to the first and second voltages; and
when battery subgroup A is selected to provide the second voltage and the common ground, said battery interconnections connecting said second terminal of battery subgroup B to said fixst terminal of battery subgroup A to provide the fixst voltage between said first terminal of battery subgroup B and said second terminal of battery subgroup A, said battery interconnections also connecting to supply the second voltage between said fixst and second terminals of battery subgroup A, wherein said second terminal of battery subgroup A is the ground common to the first and second voltages; and
a battery interconnection controller operatively connected to said battery interconnections for selectively varying the subgroup from which the second voltage and common ground are derived, whereby the one or more batteries supplying the second voltage are changed to minimize differences in the depletion of the batteries.
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Accused Products
Abstract
A battery power supply transposition circuit has been provided to control the use of batteries in a power source supplying multiple voltages from multiple batteries that share a least one common battery. The transposition circuit includes switches to provide selective interconnections between the battery terminals which allow the order of the series connected batteries to be changed. A battery interconnection controller is also included to control interconnections between batteries, and so allow alternate batteries to be used as the at least one common battery. Changing the selection of the at least one common battery provides a means for minimizing differences in the rate at which the batteries are depleted.
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Citations
20 Claims
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1. A battery transposition power supply to constantly supply at least two voltages having a common ground, a first voltage and a second voltage less than the first voltage, the battery transposition power supply comprising:
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a first group of at least two series connected battery subgroups for supplying the first voltage, said first group of batteries including battery subgroups A and B, each having first and second terminals, the battery transposition power supply providing the second voltage from a battery subgroup of said first group including at least one battery; a plurality of selectable battery interconnections connecting said first and second terminals of said battery subgroups for supplying the first voltage, and for selectively supplying the second voltage and common ground from different battery subgroups of said first group as follows; when battery sub group B is selected to provide the second voltage and common ground, said battery interconnections connecting said second terminal of battery subgroup A to said first terminal of battery Subgroup B to provide the first voltage between said first terminal of battery subgroup A and said second terminal of battery subgroup B, said battery interconnections also connecting to supply the second voltage between said first and second terror-sis of battery subgroup B, wherein said second terminal of battery subgroup B is the ground common to the first and second voltages; and when battery subgroup A is selected to provide the second voltage and the common ground, said battery interconnections connecting said second terminal of battery subgroup B to said fixst terminal of battery subgroup A to provide the fixst voltage between said first terminal of battery subgroup B and said second terminal of battery subgroup A, said battery interconnections also connecting to supply the second voltage between said fixst and second terminals of battery subgroup A, wherein said second terminal of battery subgroup A is the ground common to the first and second voltages; and a battery interconnection controller operatively connected to said battery interconnections for selectively varying the subgroup from which the second voltage and common ground are derived, whereby the one or more batteries supplying the second voltage are changed to minimize differences in the depletion of the batteries. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for constantly supplying at least two different voltages with a common ground from a power supply having a plurality of transposable battery subgroups with first and second terminals, including a first voltage from a first group of batteries including battery subgroups A and B, and a second voltage being equal to a proportional fraction of the first voltage from a battery subgroup including at least one battery, and further including a plurality of battery interconnections to selectively connect battery subgroup terminals, the method comprising the following steps:
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a) selectively connecting battery subgroups A and B, in series, with the battery interconnections, to provide the first voltage and a ground as follows; when battery subgroup B is selected to provide the second voltage, the battery interconnections connect the second terminal of battery subgroup A to the first terminal of battery subgroup B to provide the first voltage between the first terminal of battery subgroup A and said second terminal of battery sub group B, wherein said second terminal of battery subgroup B is the ground; and when battery subgroup A is selected to provide the second voltage, the battery interconnections connect the second terminal of battery subgroup B to the first terminal of battery subgroup A to provide the first voltage between the first terminal of battery subgroup B and the second terminal of battery subgroup A, wherein the second terminal of battery subgroup A is the ground; and b) selectively connecting the first and second terminals of at least one battery sub group used in step a) with the battery interconnections to provide the second voltage and a ground, common to the ground in step a), as follows; when battery subgroup B is selected to provide the second voltage, the battery interconnections connect to provide the second voltage between the first and second terminals of battery subgroup B, wherein the second terminal of battery sub group B is the ground common to the first and second voltages; and when battery subgroup A is selected to provide the second voltage, the battery interconnections connect to provide the second voltage between said first and second terminals of battery subgroup A, wherein the second terminal of battery subgroup A is the ground common to the first and second voltages, whereby the batteries are managed to augment equal usage. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification