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US 9,428,072 B2Granted
Method and system for extending battery life
AssigneeFord Global Technologies, LLC
InventorsXiaoguang Chang, Josephine S. Lee, Xu Wang, Chuan He
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Abstract
A method for extending the life cycle of a battery includes receiving a storage mode status signal at a battery controller and incrementally adjusting a state of charge window over a period of time in response to receiving the storage mode status signal.
Claims16
A method for extending a life cycle of a battery comprising:
- receiving a storage mode status signal at a battery system controller, the storage mode status signal including an expected duration of a storage mode;
- and incrementally adjusting a state of charge window over a predefined time period in response to receiving the storage mode status signal by gradually adjusting a state of charge low limit from a first state of charge low limit value to a second state of charge low limit value by periodically decrementing the state of charge low limit value by a set amount over a predefined period of time,
- gradually adjustig a state of charge high limit from a first state of charge high limit value to a second state of charge high limit value by periodically decrementing the state of charge high limit value by a set amount over a predefined period of time,
- and gradually adjusting a state of charge maximum limit from a first state of charge maximum limit value to a second state of charge maximum limit value periodically decrementing the state of charge maximum limit value by a set amount over a predefined time period;
- and maintaining a state of charge minimum limit in response to the storage mode status signal.
2 more elements
A vehicle battery system controller comprising:
- a non-transitory computer readable medium storing instructions operable to cause a battery system controller to incrementally adjust a state of charge window over a predefined time period in response to receiving a storage mode status signal by gradually adjusting a state of charge low limit from a first state of charge low limit value to a second state of charge low limit value by periodically decrementing the state of charge low limit value by a set amount over a predefined period of time, gradually adjusting a state of charge high limit from a first state of charge high limit value to a second state of charge high limit value by periodically decrementing the state of charge high limit value by a set amount over a predefined period of time, and gradually adjusting a state of charge maximum limit from a first state of charge maximum limit value to a second state of charge maximum limit value periodically decrementing the state of charge maximum limit value by a set amount over a predefined time period;
- and
- further operable to maintain a state of charge minimum limit, in response to a storage mode status signal;
- and
- an operator input having at least one of a touch screen button, a physical button, a toggle, and a remote input connection, the operator input including a duration input operable to receive a duration of a storage mode.
2 more elements
A method for operating an electrified vehicle:
- receiving a storage mode status signal from a vehicle operator at a battery energy control module;
- and
- gradually adjusting a state of charge low limit from a first state of charge low limit value to a second state of charge low limit value by periodically decrementing the state of charge low limit value by a set amount over a predefined period of time, gradually adjusting a state of charge high limit from a first state of charge high limit value to a second state of charge high limit value by periodically decrementing the state of charge high limit value by a set amount over a predefined period of time, and gradually adjusting a state of charge maximum limit from a first state of charge maximum limit value to a second state of charge maximum limit value periodically decrementing the state of charge maximum limit value by a set amount over a predefined time period.
Dependencies are inferred from the claim text.