SOC correcting system having multiple packs in parallel
First Claim
1. A State Of Charge (SOC) correcting system in a parallel structure of multiple packs that a plurality of sub-packs having serially connected cells are connected in parallel, the system comprising:
- sub Battery Management Systems (BMSs) connected to each of the sub-packs to calculate each SOC of the sub-packs; and
a main BMS connected to each of the sub BMSs to collect the SOCs calculated in each of the sub BMSs and transmit a final SOC to a vehicle controller,wherein when the average SOC to each SOC of the sub-packs is less than 50%, the main BMS determines a minimum value among the SOCs of the sub-packs as a final SOC, andwhen an average SOC to each SOC of the sub-packs is 50% or more, the main BMS determines a maximum value among the SOCs of the sub-packs as a final SOC.
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Abstract
A SOC correcting system in a parallel structure of multiple packs in which a plurality of sub-packs having serially connected cells are connected in parallel. The system includes sub BMSs connected to each of the sub-packs a main BMS connected to each of the sub BMSs to collect the SOCs calculated in each of the sub BMSs and to transmit a final SOC to a vehicle SOC to a vehicle controller. When an average SOC to each SOC of the sub-packs is less than 50%, the main BMS determines a minimum value among the SOCs of the sub-packs as a final SOC, and when the average SOC to each SOC of the sub-packs is 50% or more, the main BMS determines a maximum value among the SOCs of the sub-packs as a final SOC.
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Citations
5 Claims
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1. A State Of Charge (SOC) correcting system in a parallel structure of multiple packs that a plurality of sub-packs having serially connected cells are connected in parallel, the system comprising:
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sub Battery Management Systems (BMSs) connected to each of the sub-packs to calculate each SOC of the sub-packs; and a main BMS connected to each of the sub BMSs to collect the SOCs calculated in each of the sub BMSs and transmit a final SOC to a vehicle controller, wherein when the average SOC to each SOC of the sub-packs is less than 50%, the main BMS determines a minimum value among the SOCs of the sub-packs as a final SOC, and when an average SOC to each SOC of the sub-packs is 50% or more, the main BMS determines a maximum value among the SOCs of the sub-packs as a final SOC. - View Dependent Claims (2, 3, 4, 5)
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Specification