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

A technology of braking energy recovery and electric vehicles, applied in the field of energy saving of electric vehicles, can solve the problems of not being able to achieve energy saving, not having braking energy recovery, energy consumption, etc., to reduce energy loss, meet driving requirements, and increase driving mileage Effect

Inactive Publication Date: 2012-06-06
SHANGHAI ZHONGKE SHENJIANG ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0022] In order to make the objectives and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] The energy-saving method for electric vehicles of the present invention includes two parts. The first part is to judge the driving state of the electric vehicle, and the working state of the clutch is judged according to whether it is coasting; Clutch control and motor control.

[0024] See figure 1 According to the energy-saving method for electric vehicles of the present invention, the coasting state is determined by the brake pedal stroke br, accelerator pedal stroke th, and motor speed n. When br=0, th=0, and n>0, the vehicle is considered In the coasting state, the clutch remains in a one-way clutch state.

[0025] According to the energy-saving method for electric vehicles of the present invention, the braking energy recovery control strategy is preferably di...

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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...

Claims

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Application Information

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IPC IPC(8): B60W30/18B60W10/02B60W10/08B60W40/08B60W40/12
Inventor 周炳峰明巧红李良
Owner SHANGHAI ZHONGKE SHENJIANG ELECTRIC VEHICLE
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