Method for controlling the electrical battery power in a motor vehicle
First Claim
1. A method for controlling the electrical battery power which is supplied to or drawn from the battery (5) of a motor vehicle and is coupled to the power supply system of the motor vehicle, the total electrical power (Pg) consumed by the motor vehicle being generated by a generator (3) which is coupled to the internal combustion engine (2) of the motor vehicle, characterized in that a cost function is calculated which represents a measure of the additional fuel consumption based on the total electrical power generated by this additional consumption, and in that an optimal value for the battery power is determined such that the cost function is minimized.
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Abstract
Method for controlling the electrical battery power in a motor vehicle The invention relates to a method for controlling the battery power which is supplied to or drawn from a battery (5) of a motor vehicle. In this case, a cost function is calculated which represents a measure of the additional fuel consumption in relation to the total electrical power generated by this additional consumption. The optimal battery power is then determined such that the cost function is minimized, i.e. the total electrical power is generated as efficiently as possible, corrections being made to the calculated optimal battery power in order to keep the battery within a predetermined state of charge range.
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Citations
7 Claims
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1. A method for controlling the electrical battery power which is supplied to or drawn from the battery (5) of a motor vehicle and is coupled to the power supply system of the motor vehicle, the total electrical power (Pg) consumed by the motor vehicle being generated by a generator (3) which is coupled to the internal combustion engine (2) of the motor vehicle,
characterized in that a cost function is calculated which represents a measure of the additional fuel consumption based on the total electrical power generated by this additional consumption, and in that an optimal value for the battery power is determined such that the cost function is minimized.
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7. A controller for controlling the electrical battery power which is supplied to or drawn from the battery (5) of a motor vehicle which is coupled to the power supply system (4) of the motor vehicle, the total electrical power (Pg) consumed by the motor vehicle being generated by a generator (3) which is coupled to the internal combustion engine (2) of the motor vehicle,
characterized in that a cost function is calculated which represents a measure of the additional fuel consumption based on the total electrical power generated by this additional consumption, and in that an optimal value for the battery power is determined such that the cost function is minimized.
Specification