Power supply system
First Claim
Patent Images
1. A power supply system comprising:
- a storage battery assembly comprising a plurality of storage battery control units;
wherein each storage battery control unit comprises at least one storage battery cell and is connected to a common parallel connection line via a selection switch circuit, whereina reference voltage range is set, which is defined by a reference voltage value and a span of voltage from the reference voltage value;
a group of the storage battery control units, which are selected from the storage battery control units and have output voltages within the reference voltage range, are first connected to the parallel connection line, andthe reference voltage range is set by changing the reference voltage value so as to maximize the number of the storage battery control units having output voltages within the reference voltage range.
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Abstract
To provide a power supply system equipped with a storage battery assembly including a plurality of storage battery control units, the power supply system being configured such that a group of the storage battery control units, which are selected from the storage battery control units, and which have output voltages within a predetermined voltage range, are first connected to the parallel connection line, and such that the voltage range is set so as to maximize the number of the storage battery control units having output voltages within the voltage range.
13 Citations
7 Claims
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1. A power supply system comprising:
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a storage battery assembly comprising a plurality of storage battery control units; wherein each storage battery control unit comprises at least one storage battery cell and is connected to a common parallel connection line via a selection switch circuit, wherein a reference voltage range is set, which is defined by a reference voltage value and a span of voltage from the reference voltage value; a group of the storage battery control units, which are selected from the storage battery control units and have output voltages within the reference voltage range, are first connected to the parallel connection line, and the reference voltage range is set by changing the reference voltage value so as to maximize the number of the storage battery control units having output voltages within the reference voltage range. - View Dependent Claims (2, 3, 4, 5)
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6. A power supply system comprising:
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a storage battery assembly comprising a plurality of storage battery control units; wherein each storage battery control unit comprises at least one storage battery cell and is connected to a common parallel connection line via a selection switch circuit, wherein a reference voltage range is set, which is defined by a reference voltage value and a span of voltage from the reference voltage value; a group of the storage battery control units, which are selected from the storage battery control units and have output voltages within the reference voltage range, are first connected to the parallel connection line, and the reference voltage range is set by changing the reference voltage value so that the number of the storage battery control units having output voltages within the reference voltage range is not less than a predetermined minimum number.
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7. A method for controlling a power supply system comprising a storage battery assembly comprising a plurality of storage battery control units, wherein each storage battery control unit comprises at least one storage battery cell and is connected to a common parallel connection line via a selection switch circuit, the method comprising:
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setting a reference voltage range, the reference voltage range being defined by a reference voltage value and a span of voltage from the reference voltage value; measuring output voltages of the plurality of storage battery units; setting the reference voltage value such that a number of battery units having output voltages within reference voltage range is maximized or not less than a predetermined minimum number; and first connecting the storage battery units having output voltages within the predetermined range to the parallel connection line.
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Specification