Battery pack management strategy in a hybrid electric motor vehicle
First Claim
Patent Images
1. A hybrid electric vehicle comprising:
- a chassis comprising wheels on which the vehicle travels;
a powertrain coupled to driven ones of the wheels;
an ignition switch that when operated to an “
on”
position enables the powertrain to propel the vehicle and when operated to an “
off”
position shuts down the powertrain;
the powertrain comprising an internal combustion engine having a rotary output coupled to a rotary input of an electric motor/generator that has a rotary output coupled to the driven wheels;
a battery pack coupled to the motor/generator through a controller for selectively operating the motor/generator as a motor that draws electricity from the battery pack to add torque to the powertrain and as a generator that delivers electricity to the battery pack to subtract torque from the powertrain when a management strategy for the battery pack allows such operation;
the controller being selectively operable to any of multiple strategies for managing the battery pack via an algorithm that, when the ignition switch is operated from “
off”
position to “
on”
position, operates to select a particular battery pack management strategy according to a calibratable parameter that, for the vehicle, has been set to a particular one of multiple values;
a first of the calibratable parameter values being effective to cause the algorithm to set the battery pack management strategy to the same battery pack management strategy that was being used when the ignition switch was last operated from “
on”
position to “
off”
position, and a second of the calibratable parameter values being effective to cause the algorithm to set the battery pack management strategy to a strategy that is determined by the number of times that the ignition switch has been operated from “
off”
position to “
on”
position since the last re-charging of the battery pack from a source external to the vehicle.
3 Assignments
0 Petitions
Accused Products
Abstract
A software algorithm (FIG. 3) determines the strategy by which a controller (34) will manage state of charge (SOC) of a battery pack (32) in a hybrid electric vehicle but always gives the driver the opportunity to make his/her own selection instead. The algorithm causes one of two strategies to be selected each time that the ignition switch is operated from “off” position to “on” position. The manner in which the algorithm executes depends on the value of a calibratable parameter electronically programmed into the controller of the particular vehicle when the vehicle is being built at the factory.
17 Citations
11 Claims
-
1. A hybrid electric vehicle comprising:
-
a chassis comprising wheels on which the vehicle travels; a powertrain coupled to driven ones of the wheels; an ignition switch that when operated to an “
on”
position enables the powertrain to propel the vehicle and when operated to an “
off”
position shuts down the powertrain;the powertrain comprising an internal combustion engine having a rotary output coupled to a rotary input of an electric motor/generator that has a rotary output coupled to the driven wheels; a battery pack coupled to the motor/generator through a controller for selectively operating the motor/generator as a motor that draws electricity from the battery pack to add torque to the powertrain and as a generator that delivers electricity to the battery pack to subtract torque from the powertrain when a management strategy for the battery pack allows such operation; the controller being selectively operable to any of multiple strategies for managing the battery pack via an algorithm that, when the ignition switch is operated from “
off”
position to “
on”
position, operates to select a particular battery pack management strategy according to a calibratable parameter that, for the vehicle, has been set to a particular one of multiple values;a first of the calibratable parameter values being effective to cause the algorithm to set the battery pack management strategy to the same battery pack management strategy that was being used when the ignition switch was last operated from “
on”
position to “
off”
position, and a second of the calibratable parameter values being effective to cause the algorithm to set the battery pack management strategy to a strategy that is determined by the number of times that the ignition switch has been operated from “
off”
position to “
on”
position since the last re-charging of the battery pack from a source external to the vehicle. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method of operating a hybrid electric vehicle that has a chassis comprising wheels on which the vehicle travels;
- a powertrain coupled to driven ones of the wheels;
the powertrain comprising an internal combustion engine having a rotary output coupled to a rotary input of an electric motor/generator that has a rotary output coupled to the driven wheels;
an ignition switch that when operated to an “
on”
position enables the powertrain to propel the vehicle and when operated to an “
off”
position shuts down the powertrain;
a battery pack coupled to the motor/generator through a controller for selectively operating the motor/generator as a motor that draws electricity from the battery pack to add torque to the powertrain and as a generator that delivers electricity to the battery pack to subtract torque from the powertrain when a management strategy for the battery pack allows such operation;
the method comprising;when the ignition switch is operated from “
off”
position to “
on”
position, executing an algorithm to select a strategy for managing the battery pack according to a calibratable parameter that, for the vehicle, has been set to a particular one of multiple values, wherein a first of the calibratable parameter values is effective to cause the algorithm to set the battery pack management strategy to the same battery pack management strategy that was being used when the ignition switch was last operated from “
on”
position to “
off”
position, and a second of the calibratable parameter values is effective to cause the algorithm to set the battery pack management strategy to a strategy that is determined by the number of times that the ignition switch has been operated from “
off”
position to “
on”
position since the last re-charging of the battery pack from a source external to the vehicle. - View Dependent Claims (8, 9, 10, 11)
- a powertrain coupled to driven ones of the wheels;
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeInternational Truck Intellectual Property Co. LLC (Volkswagen AG)
-
Original AssigneeInternational Truck Intellectual Property Co. LLC (Volkswagen AG)
-
InventorsMiller, Stanton E.
-
Primary Examiner(s)ARTHUR JEANGLAUDE, GERTRUDE
-
Application NumberUS12/054,542Publication NumberTime in Patent Office1,078 DaysField of Search701/22, 701/70, 180/65.28, 180/65.1, 180/65.21, 180/65.265, 903/951, 192/84.2US Class Current701/22CPC Class CodesB60K 6/485 Motor-assist typeB60W 10/06 including control of combus...B60W 10/26 for electrical energy, e.g....B60W 20/00 Control systems specially a...B60W 20/13 in order to stay within bat...B60W 2050/0031 Mathematical model of the v...B60W 2510/244 Charge stateB60W 2540/06 Ignition switchB60W 2540/215 Selection or confirmation o...B60W 50/0097 Predicting future conditionsB60W 50/082 Selecting or switching betw...B60W 50/085 Changing the parameters of ...Y02T 10/40 Engine management systemsY02T 10/62 Hybrid vehiclesY10S 903/951 Assembly or relative locati...
