BATTERY STATE-OF-CHARGE MANAGEMENT METHOD
First Claim
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1. A method of managing a state of charge of a battery in a hybrid electric power system comprising a fuel cell, the method comprising:
- defining a setpoint;
calculating an estimated present state of charge of the battery using the battery current and the battery voltage; and
regulating the state of charge of the battery by manipulating a fuel cell current supplied from the fuel cell to the battery based on the difference between the setpoint and the estimated present state of charge of the battery.
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Abstract
Equipment and methods for estimating and regulating the state of charge (SOC) of a battery in a hybrid fuel cell-battery system for use in a moving vehicle. The SOC is continuously estimated and the fuel cell power is regulated to maintain the SOC at a level such that the battery has enough stored energy to operate motors used in the vehicle, and enough spare capacity to accept regenerative energy from these motors during further operations.
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Citations
18 Claims
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1. A method of managing a state of charge of a battery in a hybrid electric power system comprising a fuel cell, the method comprising:
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defining a setpoint; calculating an estimated present state of charge of the battery using the battery current and the battery voltage; and regulating the state of charge of the battery by manipulating a fuel cell current supplied from the fuel cell to the battery based on the difference between the setpoint and the estimated present state of charge of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification