BATTERY MANAGEMENT
First Claim
1. A battery management system for measuring the state of charge in a battery having more than one sub-unit, the system comprising:
- a charge level detector for detecting charge levels in the sub-units;
a charge distributor adapted to move charge between the sub-units;
a controller adapted to receive charge level information and control the movement of charge in the battery;
wherein, the controller initiates the discharge of a sub-unit to a predetermined level into the other sub-units and initiates the charging of said sub-unit in the battery to a predetermined level from the charge held on the other sub-units.
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Accused Products
Abstract
Apparatus and method for battery calibration and state of charge determination(SoC) within battery packs by detecting charge levels in a cell or cells, sending the charge level information to a controller which controls the movement of charge in the battery wherein, the controller initiates the discharge of a sub-unit to a predetermined level into the other sub-units and the charging of said sub-unit in the battery to a predetermined level from the charge held on the other sub-units to improve the accuracy and reliability of battery calibration and provide an accurate State of Charge indication from battery first use to end of life.
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Citations
37 Claims
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1. A battery management system for measuring the state of charge in a battery having more than one sub-unit, the system comprising:
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a charge level detector for detecting charge levels in the sub-units; a charge distributor adapted to move charge between the sub-units; a controller adapted to receive charge level information and control the movement of charge in the battery; wherein, the controller initiates the discharge of a sub-unit to a predetermined level into the other sub-units and initiates the charging of said sub-unit in the battery to a predetermined level from the charge held on the other sub-units. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 37)
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20. A method for measuring the state of charge in a battery having more than one sub-unit, the method comprising the steps of:
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detecting charge levels in the sub-units; and sending the charge level information to a controller which controls the movement of charge in the battery; wherein, the controller initiates the discharge of a sub-unit to a predetermined level into the other sub-units and the charging of said sub-unit in the battery to a predetermined level from the charge held on the other sub-units. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification