Electric vehicle braking system
First Claim
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1. A braking system for an electric vehicle, said braking system comprising:
- a hydraulic braking assembly including a brake pedal;
an electric braking assembly including a sensor so mounted to said brake pedal as to detect a displacement of the brake pedal along a first direction; and
a feedback force generator so associated with said brake pedal as to selectively generate a negative feedback force in a second direction opposite said first direction;
wherein said feedback force generator is responsive to the displacement detected by said sensor.
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Abstract
A braking system for electric vehicles that gives a driver the feel of a conventional hydraulic braking system while maximizing the recuperation of electrical power is described herein. A single brake pedal is used to control both electric and hydraulic braking assemblies. A feedback force generator is provided to give the driver the impression that a completely hydraulic braking system is used. Therefore, the driver is not inclined to further depress the pedal, thereby preventing the premature activation of the hydraulic braking system.
49 Citations
26 Claims
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1. A braking system for an electric vehicle, said braking system comprising:
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a hydraulic braking assembly including a brake pedal;
an electric braking assembly including a sensor so mounted to said brake pedal as to detect a displacement of the brake pedal along a first direction; and
a feedback force generator so associated with said brake pedal as to selectively generate a negative feedback force in a second direction opposite said first direction;
wherein said feedback force generator is responsive to the displacement detected by said sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 26)
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- 12. A feedback force generator for an electric vehicle provided with a hydraulic braking assembly and an electric braking assembly both actuated by a common brake pedal, said electric braking assembly including a sensor so associated with the brake pedal as to detect a displacement of the brake pedal along a first direction, wherein said feedback force generator includes a force applying mechanism so mounted between the brake pedal and said vehicle as to selectively apply, on the brake pedal, a negative feedback force in a second direction opposite said first direction in response to the displacement detected by the sensor.
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22. An electric vehicle comprising:
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a hydraulic braking assembly including a brake pedal;
an electric braking assembly including a sensor so associated with said brake pedal as to detect a displacement of said brake pedal along a first direction; and
a feedback force generator so associated with said brake pedal as to selectively generate a negative feedback force in a second direction opposite said first direction;
wherein said feedback force generator is responsive to the displacement of the brake pedal detected by said sensor.
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23. A method for braking an electric vehicle, comprising:
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connecting a brake pedal to a hydraulic braking assembly and to an electric braking assembly;
sensing a displacement of the brake pedal along a first direction;
measuring at least one parameter relative to the vehicle;
selectively generating a negative feedback force on said brake pedal in a second direction opposite the first direction in response to both the detected movement of the brake pedal and the at least one parameter measured. - View Dependent Claims (24, 25)
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Specification