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US 5,350,985 AGranted
Electric braking for vehicles with two parallel electric motors
AssigneeLinde Aktiengesellschaft
InventorsHarald Konrad, Siegfried Puschel, Gerald Stein
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AssigneeLinde Aktiengesellschaft
InventorsHarald Konrad, Siegfried Puschel, Gerald Stein
Estimating the term…
For the low-loss braking of an electrically driven vehicle with two electric motors connected in parallel and arranged one on each side of the vehicle and which are controlled by a pulse control, it is proposed, for one, to brake the vehicle above a prescribed rpm threshold value by useful-current braking, and below it by means of regenerative braking. Secondly, instead of an rpm threshold value, the battery current can also be used as the criterion for one of the two different braking types. A high heat generation in the motors is avoided and energy is saved by this braking process. An electric switching circuit for the conversion of this process is indicated.
A process for the low-loss braking of an electrically driven vehicle by providing braking circuit means wherein two electric motors are connected in parallel and assigned to each side of the vehicle and which are controlled by pulse control, comprising the steps of continuously detecting the rpm of both electric motors (1,2) and the positions of travel direction inducers and, at the moment braking of the vehicle is commenced as indicated by the positions of the travel direction inducers, utilizing said braking circuit means to brake the vehicle by regenerative braking above a prescribed threshold value for the rpm of both electric motors (1,2) and utilizing said braking circuit means to brake the vehicle by dynamic braking below said threshold value.
A process for the low-loss braking of a vehicle driven electrically by a battery by providing braking circuit means wherein two electric motors are connected in parallel and assigned one on each side of the vehicle, which motors are controlled by a pulse control, comprising the steps of continuously measuring the battery current and detecting the positions of travel direction inducers and, at the moment of braking of the vehicle is commenced as indicated by the positions of the travel direction inducers, utilizing said braking circuit means to brake the vehicle by regenerative braking above a prescribed threshold value for the battery current supplied by the battery (22) and utilizing said braking circuit means to brake the vehicle by dynamic braking below said threshold value for the battery current.
Dependencies are inferred from the claim text.