ELECTRIC AUXILIARY DRIVE FOR A TRAVELLING DEVICE PRIMARILY DRIVEN, IN PARTICULAR DRAWN OR PUSHED, BY HUMAN OR ANIMAL POWER

摘要

An auxiliary drive (4), for example of a golf caddie,has a boosting effect when the driving power requirements arehigh and has a regenerative effect when the driving powerrequirements are low, in particular negative. The auxiliarydrive (4) is provided with a measurement device (9) for theprimary driving power and with a control (7) that increases ordiminishes the generated torque by reducing or increasing theregenerative braking torque when a predetermined primarydriving force is exceeded or not reached, thus resetting thepredetermined primary driving force. The invention is thusbased on a basic load that may be supplied by the user himself,and which may be comfortably measured, and spares the userfurther efforts. As on the other hand energy is saved, incomparison with a full power drive, a lighter battery issufficient. The battery may be even lighter as the energy thatis used when driving uphill is recovered when driving downhill,apart from the efficiency-determined loss. In addition, thebattery is always loaded to a certain extent when driving on aflat road, as long as irregularities of the soil do not consumethe predetermined primary driving force. The control is besidesautomated and does not require to be actuated.