Braking control system for electric automobile
First Claim
1. A braking control system for an electric automobile, said brake control system permitting combined use of mechanical braking by a mechanical brake system (11) and regenerative braking by a drive motor (2) upon application of brakes, comprising:
- failure detection means (22) for detecting whether said mechanical brake system (11) is normal or in failure, andregenerative braking control means (12) for receiving a detection signal from said failure detection means (22) upon application of said brakes and then performing control of regenerative braking by said drive motor (2);
wherein said regenerative braking control means (12) performs said control of regenerative braking by said drive motor (2) so that greater braking force is produced when a failure in said mechanical brake system (11) is detected by said failure detection means (22) than when said mechanical brake system (11) is detected to be normal.
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Accused Products
Abstract
This invention relates to a braking control system for an electric automobile that runs by driving wheels with an electric motor. The braking control system controls braking of a vehicle through regenerative braking by the motor. Upon application of brakes, the braking control system can make combined use of mechanical braking by a mechanical brake system (11) and regenerative braking by a drive motor (2). The braking control system is designed to control regenerative braking of the motor (2) by a regenerative braking control device (12) so that greater braking force is produced when a failure in the mechanical brake system (11) is detected by a failure detection device (22) than when the mechanical brake system (11) is detected to be normal. This has made it possible to stop the vehicle surely by appropriately using regenerative braking in the event of a failure in the mechanical brake system while also making it possible to avoid or reduce an energy loss, which is caused by regenerative braking, when the mechanical brake system is normal.
61 Citations
7 Claims
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1. A braking control system for an electric automobile, said brake control system permitting combined use of mechanical braking by a mechanical brake system (11) and regenerative braking by a drive motor (2) upon application of brakes, comprising:
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failure detection means (22) for detecting whether said mechanical brake system (11) is normal or in failure, and regenerative braking control means (12) for receiving a detection signal from said failure detection means (22) upon application of said brakes and then performing control of regenerative braking by said drive motor (2); wherein said regenerative braking control means (12) performs said control of regenerative braking by said drive motor (2) so that greater braking force is produced when a failure in said mechanical brake system (11) is detected by said failure detection means (22) than when said mechanical brake system (11) is detected to be normal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification