Energy management for electrified fire fighting vehicle
AssigneeOshkosh Corporation
InventorsJason Shively, Seth Newlin, David Kay, Jack Bermingham, Jon Morrow, David Steinberger
Life of this patent
Estimating the term…
Abstract
An electrified fire fighting vehicle includes a battery pack, an electric motor, and a controller configured to operate the electric motor using stored energy in the battery pack to provide a performance condition including (i) accelerating the electrified fire fighting vehicle to a driving speed of at least 50 miles-per-hour in an acceleration time and (ii) maintaining or exceeding the driving speed for a period of time. The acceleration time is 30 second or less. An aggregate of the acceleration time and the period of time is at least 3 minutes.
Claims19
An electrified fire fighting vehicle comprising:
- a battery pack;
- an electric motor;
- an engine;
- and
- a controller configured to:
- operate the electric motor using stored energy in the battery pack to provide a performance condition including (i) accelerating the electrified fire fighting vehicle to a driving speed of at least 50 miles-per-hour in an acceleration time and (ii) maintaining or exceeding the driving speed for a period of time, wherein the acceleration time is 30 second or less, and wherein an aggregate of the acceleration time and the period of time is at least 3 minutes;
- and
- start and operate the engine in response to a start condition to facilitate reserving sufficient stored energy in the battery pack such that a state-of-charge of the battery pack is maintained above a minimum state-of-charge threshold that is sufficient to facilitate the performance condition.
An electrified fire fighting vehicle comprising:
- a battery pack;
- an electric motor;
- and
- a controller configured to:
- operate the electric motor using stored energy in the battery pack to provide a performance condition including (i) accelerating the electrified fire fighting vehicle to a driving speed of at least 50 miles-per-hour in an acceleration time and (ii) maintaining or exceeding the driving speed for a period of time, wherein the acceleration time is 30 second or less, and wherein an aggregate of the acceleration time and the period of time is at least 3 minutes;
- monitor a depth-of-discharge of the battery pack during a discharge event and prevent the depth-of-discharge from exceeding a depth-of-discharge threshold to prevent accelerated degradation of a state-of-health of the battery pack;
- and
- adaptively adjust the depth-of-discharge threshold such that a state-of-charge of the battery pack can be further depleted during discharge events as the battery pack degrades.
An electrified fire fighting vehicle comprising:
- a battery pack;
- an electric motor;
- and
- a controller configured to:
- operate the electric motor using stored energy in the battery pack to provide a performance condition including (i) accelerating the electrified fire fighting vehicle to a driving speed of at least 50 miles-per-hour in an acceleration time and (ii) maintaining or exceeding the driving speed for a period of time, wherein the acceleration time is 30 second or less, and wherein an aggregate of the acceleration time and the period of time is at least 3 minutes;
- prevent charging the battery pack above a maximum state-of-charge threshold that is less than 100% state-of-charge to prevent accelerated degradation of a state-of-health of the battery pack;
- and
- adaptively reduce the maximum state-of-charge threshold as the state-of-health of the battery pack degrades.
Dependencies are inferred from the claim text.