Patent TW-201420386-A (TW)
Title: Energy and power saving electric automobile with switchable power supply between kinetic energy and battery
Inventor: HUANG PO-YUAN
IPC: B60L50/13
Filed: 2012-11-26
Abstract: The present invention relates to an energy and power saving electric automobile driving system with power generation by kinetic energy, electricity feedback and directly auxiliary wheel transmission, which is disposed with an electricity feedback controller at the end of a rechargeable battery and an inverter of an electric automobile. The electricity feedback controller is electrically connected to a driving motor, and the driving motor is mechanically connected to a wheel through a wheel transmission shaft and a transmission gear set, and also to a dynamic power generator through the transmission gear set and a power generator transmission shaft; the electricity feedback controller is disposed therein with an electricity changeover switch, a microprocessor, and an voltage-altering rectifying circuit. The electricity changeover switch and the voltage-altering rectifying circuit are separately electrically connected to the inverter, the driving motor, and the dynamic power generator. When the electric automobile is under travelling period, the electricity feedback controller, through the electricity changeover switch, makes the driving motor under the pre-stage working period time of the electricity changeover switch use the electrical energy supplied by the rechargeable battery (the battery electricity supplying duration) to drive the electric automobile for travelling (the normal transmission); in addition, the electricity feedback controller, by means of the kinetic energy of the driving motor, the transmission gear set, and the dynamic power generator, converts the electric energy and the electricity feedback (the kinetic energy power generation), and also, through the electricity changeover switch, makes the driving motor directly use the electrical energy provided by the dynamic power supply during the time of post-stage working period (the kinetic energy electricity supply time) of the electricity changeover switch to continuously drive the electric automobile for travelling (the auxiliary transmission). The microprocessor can set up the time of pre-stage working period and the post-stage working period of the electricity changeover switch (the fixed pre- and post-stage working period), or the microprocessor can also, by means of detecting the intensity of the voltage of the dynamic power generator after the rectification of the voltage-varying rectifying circuit (the intensity of the kinetic energy power generation), properly and automatically adjust the time of the pre-stage working period and the post-stage working period as well as the switchover timing (the variable pre-stage and post-stage working period) to make the driving motor in the travelling time of the electric automobile timely and periodically alternatively use the electric energy of the rechargeable battery or the kinetic energy power supply (periodic battery electricity and kinetic energy electricity switchover power supply). Thus, by applying the auxiliary driving system constituted by the electricity feedback controller, the dynamic power generator, and the transmission gear set in the present invention, power supply from a rechargeable battery end is sufficient for driving an electric automobile with the electric energy with the energy and power saving to enhance battery endurance.