Automobile climbing control method and automobile climbing control device

Abstract

The invention provides an automobile climbing control method, which comprises the following steps: detecting an inclination angle signal when an automobile climbs a slope; calculating a correspondingcontrol current value according to the inclination angle signal; and controlling a motor of the automobile according to the control current value to keep the maximum motor output torque of the motor when the automobile climbs the slope. The invention provides the simple and efficient automobile climbing control method and a corresponding device to solve the problems of an electric automobile and ahybrid power automobile during climbing the slope, so the automobiles can climb the slope steadily, and the technical defect that the motor is burnt down due to overlarge accelerator or the automobiles go backwards and glide down due to insufficient climbing force is avoided, so the safety of vehicles is improved.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to an automobile climbing control method and a climbing control device. Background technique [0002] With the shortage of energy and the aggravation of environmental pollution, the development of the traditional automobile industry is facing many difficulties. Therefore, the emergence of electric vehicles and hybrid vehicles is favored by the majority of automobile manufacturers and consumers, and has become a hot spot in the development of automobiles. Electric vehicles and hybrid vehicles refer to vehicles powered by electric energy, and generally use high-efficiency rechargeable batteries or fuel cells as power sources. Since electric energy is a secondary energy source, it can come from various sources such as wind energy, water energy, nuclear energy, thermal energy, and solar energy. Therefore, electric vehicles are zero-emission vehicles, which can effective...

AI Technical Summary

Problems solved by technology

However, for pure electric vehicles or hybrid vehicles, which are driven by motors, if the climbing power is insufficient, the rotor will almost stop rotating, and the stator magnetic field will be locked at this time. If the driver increases the accelerator according to the operating habits, It will increase the turn-on duty cycle of the IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor), so that the stator voltage (more than three hundred volts) will be added to both ends of the stator resistance, and because the stator resistance is very small (about A few ohms), so hundreds of amperes of current will be generated. If this situation lasts for more than ten seconds, the motor, some power devices or circuit modules will be burned

And at this time, if the driver is inexperienced and releases the accelerator too quickly, the motor will reduce the torque output. Like traditional vehicles, electric vehicles and hybrid vehicles will also quickly reverse and slide due to insufficient climbing force, resulting in traffic accidents.

From the above description, it can be seen that electric vehicles and hybrid vehicles run into more serious problems than traditional vehicles when climbing a hill, and they have not been solved at present. Therefore, the shortcoming of the prior art is that a simple and effective method is urgently needed. The device solves the problems encountered when electric vehicles and hybrid vehicles climb hills

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