METHOD OF LIMITING VEHICLE SPEED DURING EVACUATION RUNNING, AND VEHICLE
First Claim
1. A method of limiting a vehicle speed during evacuation running, the method comprising:
- a regenerative-electric-power calculating step of calculating, in causing a vehicle to run under a condition in which some of a plurality of parallely connected battery blocks are separated, regenerative electric power that a decreased number of battery blocks remaining after the separation is capable of receiving;
a limit speed calculating step of calculating a limit speed of the vehicle according to the receivable regenerative electric power calculated in the regenerative-electric-power calculating step, in a manner such that regenerative electric power generated when the vehicle is braked does not exceed the receivable regenerative electric power; and
a vehicle speed limiting step of limiting the speed of the vehicle to the limit speed calculated in the limit speed calculating step or to a speed lower than the limit speed.
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Accused Products
Abstract
The present application relates to a vehicle and a method of limiting a vehicle speed during evacuation running designed to prevent a normal battery block from being overcharged by regenerative electric power during evacuation running, in which a vehicle driven by a parallely connected battery blocks runs under a condition in which some abnormal battery blocks are separated. The method may include determining whether a vehicle is performing evacuation running, calculating receivable regenerative electric power for the battery blocks used for running of the vehicle, calculating a limit speed of the vehicle according to the receivable regenerative electric power, and limiting the speed of the vehicle to the limit speed or to a speed lower than the limit speed.
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Citations
4 Claims
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1. A method of limiting a vehicle speed during evacuation running, the method comprising:
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a regenerative-electric-power calculating step of calculating, in causing a vehicle to run under a condition in which some of a plurality of parallely connected battery blocks are separated, regenerative electric power that a decreased number of battery blocks remaining after the separation is capable of receiving; a limit speed calculating step of calculating a limit speed of the vehicle according to the receivable regenerative electric power calculated in the regenerative-electric-power calculating step, in a manner such that regenerative electric power generated when the vehicle is braked does not exceed the receivable regenerative electric power; and a vehicle speed limiting step of limiting the speed of the vehicle to the limit speed calculated in the limit speed calculating step or to a speed lower than the limit speed. - View Dependent Claims (2, 3)
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4. A vehicle that runs using a motor driven by a plurality of parallely connected battery blocks, the vehicle comprising:
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a running determining unit to determine whether the vehicle is performing evacuation running in which the vehicle runs under a condition in which some of the plurality of parallely connected battery blocks are separated; a regenerative-electric-power calculating unit to calculate regenerative electric power that a decreased number of battery blocks remaining after the separation in the evacuation running is capable of receiving; a limit speed calculating unit to calculate a limit speed of the vehicle in a manner such that regenerative electric power generated when the vehicle is braked becomes the receivable regenerative electric power or power less than the receivable regenerative electric power; and a speed limit imposing unit to control an inverter for driving the motor that causes the vehicle to run, in a manner such that the speed of the vehicle becomes the limit speed calculated by the limit speed calculating unit or a speed that is lower than the limit speed.
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Specification