| 摘要 |
<p>The electrical energy storage device of wheelchair or other small vehicle is rechargeable with the manual movement or due to the downhill automatic movement of the vehicle via the protection circuit (10) by the induced voltage (U-Mot) of the motor (13). The protection circuit sets the induced voltage of motor to short circuit state, by closing a switch (T) such as MOSFET, when the induced voltage of the motor exceeds the predetermined critical threshold for the induced voltage of motor. The circuit switches to active mode, when the induced voltage reaches a lower limit.</p> |
