Stress management of battery recharge, and method of state of charge estimation
First Claim
1. A method of charging one or more cells including:
- measuring one or more cell parameters, or changes in said cell parameters;
inputting the measured cell parameter(s) or changes in cell parameters into a state of charge estimation model;
obtaining a state of charge of the cell(s) from the state of charge estimation model;
selecting an allowable temperature rise for the cell(s);
determining a charge parameter in accordance with the state of charge of the cell(s), and in accordance with the selected allowable temperature rise for the cell(s); and
supplying energy to the cell(s) in accordance with the determined charge parameter.
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Accused Products
Abstract
One or more cells are charged by measuring one or more cell parameters or changes in said cell parameters, inputting the measured cell parameter(s) or changes in cell parameters into a state of charge estimation model, obtaining a state of charge of the cell(s) from the state of charge estimation model, selecting an allowable temperature rise for the cell(s), determining a charge parameter in accordance with the state of charge of the cell(s) and in accordance with the selected allowable temperature rise for the cell(s), and supplying energy to the cell(s) in accordance with the determined charge parameter. The invention may be embodied as methods, apparatus and computer program products.
66 Citations
16 Claims
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1. A method of charging one or more cells including:
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measuring one or more cell parameters, or changes in said cell parameters; inputting the measured cell parameter(s) or changes in cell parameters into a state of charge estimation model; obtaining a state of charge of the cell(s) from the state of charge estimation model; selecting an allowable temperature rise for the cell(s); determining a charge parameter in accordance with the state of charge of the cell(s), and in accordance with the selected allowable temperature rise for the cell(s); and supplying energy to the cell(s) in accordance with the determined charge parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of charging a battery, the method comprising:
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monitoring at least one cell parameter of the battery; determining a state of charge rise for the battery responsive to the monitored at least one cell parameter; determining an allowable temperature rise for the battery; determining a charge to be applied to the battery based on the determined state of charge rise and the determined allowable temperature rise according to a model that expresses the charge as a function of state of charge and temperature rise; and applying the determined charge to the battery. - View Dependent Claims (14, 15, 16)
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Specification