Energy-saving method of electric vehicle for realizing recovery of braking energy by adopting one-way clutch device

Abstract

The invention relates to an energy-saving method of an electric vehicle. According to the electric vehicle, an electromagnetic clutch is adopted, and the reverse transmission of moment can be realized. The energy-saving method of the electric vehicle comprises the following steps: a state judging step, judging the running state of the electric vehicle and judging the working state of the clutch according to the condition whether the electric vehicle is at a gliding state or not; and a braking energy recovering control step; the energy-saving method of the electric vehicle is characterized in that the state judging step comprises the steps of determining a travel signal br of a brake pedal, determining a travel signal th of an acceleration pedal, determining the rotating speed n of a motor, determining a battery SOC and the temperature t of the battery and determining an anti-skid brake system (ABS) working signal; and the braking energy recovering control step comprises the steps of controlling the clutch when the vehicle is braked and controlling the motor.

Description

Technical field [0001] The invention relates to an energy-saving method for an electric vehicle that uses a one-way clutch device to realize braking energy recovery in an electric vehicle. The electric vehicle is realized by controlling the one-way clutch device and controlling the braking energy recovery of a motor during braking. The purpose of vehicle energy saving. Background technique [0002] Traditional clutches are mostly used in electric vehicles, and the clutch is normally closed. Therefore, the function of coasting feedback is generally set in the control strategy of electric vehicles. Due to efficiency issues, this is actually a state of energy consumption and cannot achieve energy saving effects. [0003] According to the description of patent ZL200620101338.7 "Infinitely variable speed composite one-way backstop roller bearing clutch driven disc", the one-way clutch in this patent has the function of transmitting torque in the forward direction and cutting off the pow...

AI Technical Summary

Problems solved by technology

[0002] Traditional clutches are mostly used in electric vehicles, and the clutches are in a normally closed state. Therefore, in the control strategy of electric vehicles, the function of coasting feedback is generally set. Due to efficiency problems, this is actually a state of energy consumption and cannot achieve energy-saving effects.

[0003] According to the description of the patent ZL200620101338.7 "Continuously variable speed compound one-way backstop roller bearing clutch driven disc", the one-way clutch in this patent has the function of transmitting torque in the forward direction and cutting off the power in the reverse direction, which can meet the needs of gear shifting. The requirement of cutting off the power at any time and the ability to increase the mileage, but this product does not have the ability to regenerate braking energy

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