METHOD FOR CONTROLLING OUTPUT POWER OF AN ENERGY STORAGE DEVICE IN A POWERTRAIN SYSTEM
First Claim
1. Method for controlling a powertrain system comprising an engine, a torque machine, a transmission device and an energy storage device, the transmission device operative to transfer power between the engine, the torque machine and an output member to generate an output torque, the method comprising:
- monitoring an operator torque request;
monitoring a state-of-charge of the energy storage device;
determining a first set of electric power limits and a second set of electric power limits based on the state-of-charge of the energy storage device;
providing a power range for opportunity charging and discharging of the energy storage device based on the first set of electric power limits; and
providing a power range for controlling output power of the energy storage device based on the second set of electric power limits.
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Accused Products
Abstract
A method for controlling a powertrain system includes monitoring a state-of-charge of the energy storage device and determining a first set of electric power limits and a second set of electric power limits based on the state-of-charge of the energy storage device. The method further includes providing a power range for opportunity charging and discharging of the energy storage device based on the first set of electric power limits. The method further includes providing a power range for controlling output power of the energy storage device based on the second set of electric power limits.
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Citations
20 Claims
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1. Method for controlling a powertrain system comprising an engine, a torque machine, a transmission device and an energy storage device, the transmission device operative to transfer power between the engine, the torque machine and an output member to generate an output torque, the method comprising:
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monitoring an operator torque request; monitoring a state-of-charge of the energy storage device; determining a first set of electric power limits and a second set of electric power limits based on the state-of-charge of the energy storage device; providing a power range for opportunity charging and discharging of the energy storage device based on the first set of electric power limits; and providing a power range for controlling output power of the energy storage device based on the second set of electric power limits. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Method for controlling a powertrain system comprising an engine, a torque machine, a transmission device and an energy storage device, the transmission device operative to transfer power between the engine, the torque machine and an output member to generate an output torque, the method comprising:
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monitoring a state-of-charge of the energy storage device; determining a set of predicted electric power limits and a set of long-term electric power limits based upon the state-of-charge of the energy storage device; and permitting free charging of the energy storage device and restricting opportunity charging of the energy storage device based on the predicted electric power limits and the long-term electric power limits when the state-of-charge is in a free charge range. - View Dependent Claims (17, 18)
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19. Method for managing electric power in a powertrain system comprising an energy storage device, an engine, a second torque generating device and a transmission device operative to transfer power among an output member, the engine and the second torque generating device, the second torque generating device electrically coupled to an energy storage device, the method comprising:
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monitoring a state-of-charge of the energy storage device; determining a set of predicted electric power limits and a set of long-term electric power limits based upon the state-of-charge of the energy storage device; and permitting forced discharging of the energy storage device and restricting opportunity discharging of the energy storage device utilizing the predicted electric power limits and the long-term electric power limits when the state-of-charge is in a forced discharge range. - View Dependent Claims (20)
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Specification