Battery management system and driving method for cutting off and coupling battery module from/to external device
First Claim
1. A battery management system for controlling an operation of a secondary battery module comprising a plurality of unit batteries, the battery management system comprising:
- sensor means for sequentially measuring respective voltages of the plurality of unit batteries;
comparator means for comparing the respective voltages of the unit batteries to a cut-off voltage range to determine whether the respective voltages are within the cut-off voltage range, and for comparing the respective voltages of the unit batteries to a recovery voltage range to determine whether the respective voltages are within the recovery voltage range; and
controller means for receiving comparison results from the comparator means, for cutting off the secondary battery module from an external device when at least one unit battery from among the plurality of unit batteries is outside the cutoff voltage range, and for coupling the secondary battery module to the external device when all of the unit batteries are within the recovery voltage range.
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Abstract
A battery management system for controlling a secondary battery module which includes a plurality of unit batteries includes a sensor, a comparator and a controller. The sensor sequentially measures respective voltages of the unit batteries. The comparator compares the respective voltages of the unit batteries to a cut-off voltage range and a recovery voltage range to determine if the voltages are within the cut-off voltage range and the recovery voltage range. The controller receives comparison results from the comparator, cuts off the secondary battery module from an external device when there is at least one unit battery within the cutoff voltage range, and couples the secondary battery module to the external device when all of the unit batteries are within the recovery voltage range.
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Citations
19 Claims
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1. A battery management system for controlling an operation of a secondary battery module comprising a plurality of unit batteries, the battery management system comprising:
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sensor means for sequentially measuring respective voltages of the plurality of unit batteries; comparator means for comparing the respective voltages of the unit batteries to a cut-off voltage range to determine whether the respective voltages are within the cut-off voltage range, and for comparing the respective voltages of the unit batteries to a recovery voltage range to determine whether the respective voltages are within the recovery voltage range; and controller means for receiving comparison results from the comparator means, for cutting off the secondary battery module from an external device when at least one unit battery from among the plurality of unit batteries is outside the cutoff voltage range, and for coupling the secondary battery module to the external device when all of the unit batteries are within the recovery voltage range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 18)
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11. A driving method of a battery management system of a secondary battery module which includes a plurality of unit batteries, the driving method comprising the steps of:
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(a) measuring respective voltages of the unit batteries; (b) comparing the respective voltages of the unit batteries to a cut-off voltage range to determine whether the respective voltages are within the cut-off voltage range, and comparing the respective voltages of the unit batteries to a recovery voltage range to determine whether the respective voltages are within the recovery voltage range, and producing a comparison result; and (c) according to the comparison result obtained in step (b), cutting off the secondary battery module from an external device when at least one unit battery among the plurality of unit batteries is outside the cut-off voltage range, and coupling the secondary battery module to the external device when all of the unit batteries are within the recovery voltage range. - View Dependent Claims (12, 13, 14, 15, 16, 17, 19)
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Specification