Control method of electric vehicle for mining

Abstract

The invention relates to a control method of an electric vehicle for mining. The control method comprises the following steps that the electric vehicle for mining is enabled to drive under ideal working conditions, and a target vehicle speed is calculated by a vehicle control unit according to the depth theta of a throttle which a driver stepped on; and a torque required by a motor is calculated by the vehicle control unit according to the depth theta of the throttle which the driver stepped on; an actual output torque T<(t-1)> of the motor at time (t-1) is fed back to the vehicle control unitby a motor controller, when the actual output torque T<(t-1)> reaches a required torque T<p(t)>, the input torque T<IN(t)> of the vehicle control unit to the motor controller at time t is equal to T<p(t)>, and when the actual output torque T<(t-1)> does not reach the required torque T<p(t)>, the input torque T<IN(t)> of the vehicle control unit to the motor controller at time t is equal to T<(t-1)>+T<step>. According to the control method of the electric vehicle for mining, a battery can be protected effectively, and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to a mining electric vehicle, in particular to a control method of the mining electric vehicle. Background technique [0002] At present, my country's underground auxiliary transportation mostly uses explosion-proof trackless rubber-tyred vehicles powered by diesel engines. Explosion-proof trackless rubber-tyred vehicles powered by diesel engines have the disadvantages of three highs and one low in narrow mine roadways: high emissions, high fuel consumption, high noise, and low efficiency. Therefore, zero-emission mining electric vehicles are gradually replacing explosion-proof trackless rubber-tyred vehicles powered by diesel engines and becoming the main auxiliary transportation force for green mines. [0003] The working conditions in coal mines are complicated, and the electric vehicles used in mines are usually fully loaded, and there are often long-distance ramps. According to the usual control method of mining electric ve...

AI Technical Summary

Problems solved by technology

Explosion-proof trackless rubber-tyred vehicles powered by diesel engines have the disadvantages of three highs and one low in narrow mine roadways: high emissions, high fuel consumption, high noise, and low efficiency

According to the regulations, the batteries in a single battery box are not allowed to be connected in parallel. This will cause the battery consistency to decrease due to frequent over-discharge of the current, which will affect the overall effective discharge rate of the battery pack, thereby affecting the cruising range. Long-term use will also cause battery damage.

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