Response to detection of an overcharge event in a series connected battery element
First Claim
1. A microprocessor-implemented response system for an exceptional charge event 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 an exceptional charge event of a particular one battery element of the plurality of battery elements using a second detection modality different from said first detection modality, wherein said exceptional charge event includes an overcharge of a battery element during a charging event, 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; and
a remediation system 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 exceptional charge event, wherein said exceptional charge event is associated with a particular one battery element having a particular charge target and wherein said response includes a reduction of said particular charge target.
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Abstract
A system and method for identifying and responding to exceptional charge events of series-connected energy storage elements can include: 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 an exceptional charge event of a particular one battery element of the plurality of battery elements using a second detection modality different from said first detection modality; and a remediation system 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 exceptional charge event.
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Citations
32 Claims
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1. A microprocessor-implemented response system for an exceptional charge event 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 an exceptional charge event of a particular one battery element of the plurality of battery elements using a second detection modality different from said first detection modality, wherein said exceptional charge event includes an overcharge of a battery element during a charging event, 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; and a remediation system 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 exceptional charge event, wherein said exceptional charge event is associated with a particular one battery element having a particular charge target and wherein said response includes a reduction of said particular charge target. - View Dependent Claims (2, 3, 4, 5, 8, 9, 10, 11, 13, 14)
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6. A microprocessor-implemented response system for an exceptional charge event 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 an exceptional charge event of a particular one battery element of the plurality of battery elements using a second detection modality different from said first detection modality, wherein said exceptional charge event includes an overcharge of a battery element during a charging event, 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; and a remediation system 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 exceptional charge event, wherein said exceptional charge event is associated with a particular one battery element having a particular charge storage capacity and wherein said response includes use of said first response modality to reduce a stored charge of said particular one battery element to a predetermined fraction of said particular charge storage capacity intentionally creating an imbalance. - View Dependent Claims (7, 29)
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12. A microprocessor-implemented response system for an exceptional charge event 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 an exceptional charge event of a particular one battery element of the plurality of battery elements using a second detection modality different from said first detection modality, wherein said exceptional charge event includes an overcharge of a battery element during a charging event, 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; and a remediation system 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 exceptional charge event, wherein the energy storage system includes a thermal control system providing a temperature control of the plurality of battery elements responsive to a thermal profile and wherein said response includes a modification to said thermal profile actuating said thermal control system at an increased cooling capacity. - View Dependent Claims (30)
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15. A computer-implemented method to respond to an exceptional charge event 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; reducing said charge imbalance using a first response modality; monitoring, using the microprocessor, the energy storage system for an exceptional charge event of a particular one battery element of the plurality of battery elements using a second detection modality different from said first detection modality, wherein said exceptional charge event is an overcharge of said particular one battery element; and decreasing a risk associated with said exceptional charge event using a second response modality different from said first response modality, wherein said decreasing-risk step includes bleeding energy from said particular one battery element. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 27, 28)
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25. A computer-implemented method to respond to an exceptional charge event 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; reducing said charge imbalance using a first response modality; monitoring, using the microprocessor, the energy storage system for an exceptional charge event of a particular one battery element of the plurality of battery elements using a second detection modality different from said first detection modality, wherein said exceptional charge event is an overcharge of said particular one battery element; and decreasing a risk associated with said exceptional charge event using a second response modality different from said first response modality, wherein said particular one battery element includes an adjustment profile including one or more of voltage gain and voltage offset factors and wherein said decreasing-risk step includes adjusting said adjustment profile. - View Dependent Claims (31)
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26. A computer-implemented method to respond to an exceptional charge event 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; reducing said charge imbalance using a first response modality; monitoring, using the microprocessor, the energy storage system for an exceptional charge event of a particular one battery element of the plurality of battery elements using a second detection modality different from said first detection modality, wherein said exceptional charge event is an overcharge of said particular one battery element; and decreasing a risk associated with said exceptional charge event using a second response modality different from said first response modality, wherein the plurality of battery elements each includes an adjustment profile including one or more of voltage gain and voltage offset factors and wherein said decreasing-risk step includes adjusting said adjustment profiles. - View Dependent Claims (32)
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Specification