RESPONSE TO DETECTION OF AN OVERDISCHARGE EVENT IN A SERIES CONNECTED BATTERY ELEMENT
First Claim
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1. A microprocessor-implemented response system for an exceptional charge event including an overdischarge of a particular one battery element in an energy storage system having a plurality of series-connected battery elements, comprising:
- a first charge imbalance detection system monitoring, using the microprocessor, the energy storage system for a charge imbalance using a first detection modality, said first charge imbalance detection system initiating a reduction of said charge imbalance using a first response modality;
a second charge imbalance detection system monitoring, using the microprocessor, the energy storage system for the overdischarge of the particular one battery element using a second detection modality different from said first detection modality; and
a remediation system initiating a response to said overdischarge using a second response modality different from said first response modality, said response decreasing a risk associated with said overdischarge;
wherein said first detection modality includes a measurement of a voltage level of each battery element of the plurality of battery elements establishing a plurality of voltage imbalances between individual ones of the plurality of battery elements;
wherein said first response modality includes adjusting said voltage levels to reduce said plurality of voltage imbalances; and
wherein said second detection modality includes a statistical evaluation of a parameter of each battery element.
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Abstract
A system and method for identifying and responding to exceptional charge events of series-connected energy storage elements.
4 Citations
16 Claims
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1. A microprocessor-implemented response system for an exceptional charge event including an overdischarge of a particular one battery element in an energy storage system having a plurality of series-connected battery elements, comprising:
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a first charge imbalance detection system monitoring, using the microprocessor, the energy storage system for a charge imbalance using a first detection modality, said first charge imbalance detection system initiating a reduction of said charge imbalance using a first response modality; a second charge imbalance detection system monitoring, using the microprocessor, the energy storage system for the overdischarge of the particular one battery element using a second detection modality different from said first detection modality; and a remediation system initiating a response to said overdischarge using a second response modality different from said first response modality, said response decreasing a risk associated with said overdischarge; wherein said first detection modality includes a measurement of a voltage level of each battery element of the plurality of battery elements establishing a plurality of voltage imbalances between individual ones of the plurality of battery elements; wherein said first response modality includes adjusting said voltage levels to reduce said plurality of voltage imbalances; and wherein said second detection modality includes a statistical evaluation of a parameter of each battery element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-implemented method to respond to an exceptional charge event including an overdischarge in an energy storage system having a plurality of series-connected battery elements, comprising:
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monitoring, using the microprocessor, the energy storage system for a charge imbalance using a first detection modality; initiating a reduction of said charge imbalance using a first response modality; monitoring, using the microprocessor, the energy storage system for the overdischarge of a particular one battery element of the plurality of battery elements using a second detection modality different from said first detection modality; and initiating a response to said exceptional charge event using a second response modality different from said first response modality, said response decreasing a risk associated with said overdischarge. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification