System and method for charging and discharging a Li-ion battery
First Claim
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1. An electrochemical battery system, comprising:
- a first electrochemical cell;
a second electrochemical cell;
a memory in which command instructions are stored; and
a processor configured to execute the command instructions to (i) selectively charge or discharge the first electrochemical cell based upon an evaluation of first criteria associated with the first electrochemical cell, and (ii) selectively charge or discharge the second electrochemical cell based upon an evaluation of second criteria associated with the second electrochemical cell, wherein the command instructions define a state of charge (SOC) threshold, and the processor is configured to execute the command instructions to selectively charge the first electrochemical cell whenever the SOC of the first electrochemical cell is above the SOC threshold and charging is available, and to selectively discharge the first electrochemical cell when the SOC of the first electrochemical cell is below the SOC threshold.
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Abstract
An electrochemical battery system in one embodiment includes a first electrochemical cell, a second electrochemical cell, a memory in which command instructions are stored, and a processor configured to execute the command instructions to (i) selectively charge or discharge the first electrochemical cell based upon an evaluation of first criteria associated with the first electrochemical cell, and (ii) selectively charge or discharge the second electrochemical cell based upon an evaluation of second criteria associated with the first electrochemical cell.
28 Citations
16 Claims
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1. An electrochemical battery system, comprising:
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a first electrochemical cell; a second electrochemical cell; a memory in which command instructions are stored; and a processor configured to execute the command instructions to (i) selectively charge or discharge the first electrochemical cell based upon an evaluation of first criteria associated with the first electrochemical cell, and (ii) selectively charge or discharge the second electrochemical cell based upon an evaluation of second criteria associated with the second electrochemical cell, wherein the command instructions define a state of charge (SOC) threshold, and the processor is configured to execute the command instructions to selectively charge the first electrochemical cell whenever the SOC of the first electrochemical cell is above the SOC threshold and charging is available, and to selectively discharge the first electrochemical cell when the SOC of the first electrochemical cell is below the SOC threshold. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electrochemical battery system, comprising:
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a plurality of electrochemical cells; a memory in which command instructions are stored; and a processor configured to execute the command instructions to (i) evaluate each of the plurality of electrochemical cells, and (ii) selectively connect a first of the plurality of electrochemical cells having a first state of charge (SOC) greater than a first SOC threshold to a circuit when the circuit is configured to provide a charge to the electrochemical battery system based upon the evaluation while selectively isolating a second of the plurality of electrochemical cells having a second SOC greater than the first SOC threshold from the circuit when the circuit is configured to provide a charge to the electrochemical battery system based upon the evaluation, wherein the first SOC is greater than the second SOC. - View Dependent Claims (8, 9, 10)
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11. An electrochemical battery system, comprising:
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a first electrochemical cell; a second electrochemical cell; a memory in which command instructions are stored; and a processor configured to execute the command instructions to selectively charge or discharge the first electrochemical cell based upon an algorithm of weighted factors, wherein the weighted factors include a first time since the first electrochemical cell has been discharged to a state of charge (SOC) threshold, the weighted factors include a second time since the second electrochemical cell has been discharged to the SOC threshold, and the first time is not the same as the second time. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification