Battery capacity estimation based on open-loop and closed-loop models
AssigneeFord Global Technologies, LLC
InventorTae-Kyung Lee
Life of this patent
Estimating the term…
Abstract
A vehicle power system may include a controller programmed to output an electric only range indicator based on a change in capacity of a traction battery derived from open-loop and closed-loop estimates of change in state of charge of the traction battery. The change in capacity may be proportional to a ratio of the open-loop estimate to the closed-loop estimate. The closed-loop estimate may contain information indicative of the change in capacity. The open-loop estimate may contain information indicative of an initial capacity of the traction battery.
Claims15
A vehicle power system comprising:
- a controller programmed to output an electric only range indicator based on a change in maximum capacity of a traction battery derived from open-loop and closed-loop estimates of change in state of charge of the traction battery, and operate the traction battery according to maximum charge and discharge current limits of the traction battery.
A vehicle comprising:
- a traction battery;
- and
- a controller programmed to alter maximum charge and discharge current limits of the traction battery based on a change in maximum capacity of the traction battery derived from open-loop and closed-loop estimates of change in state of charge of the traction battery, and operate the traction battery according to the limits.
A traction battery management method comprising:
- altering by a controller maximum charge and discharge power limits of a traction battery based on a change in maximum capacity of the traction battery derived from open-loop and closed-loop estimates of change in state of charge of the traction battery, and operate the traction battery according to the limits.
Dependencies are inferred from the claim text.