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无论是山坡或深凹露天矿,电动轮汽车在下坡行驶时,要经常制动以保持安全行车速度。这时,经电路的转换,车轮里的电动机作为发电机运行,即将其动能(来源于位能)转换为电能,使汽车获得适当的制动力。而另一部分电能,则转变成热能消耗在电阻栅上,除少量耗于汽车保温外,大部分要由冷却系统将其扩散到空气中去。 据国外文献分析,当露天采场与地面的比高为300米,年矿岩运输量为600万吨时,如采用100吨电动轮汽车运输,则每年所消耗掉的位能,对深凹露天矿为358万千瓦·时,山坡露天矿为841万千瓦·时。这是相当可观的数字！所以,国外很早就致力于回收利用运
Whether it is slopes or deep open pit mine, electric car driving downhill, to always brake to maintain safe driving speed. At this moment, the electric motor in the wheel runs as a generator through circuit conversion, that is, converts its kinetic energy (derived from the bit energy) into electric energy so that the car obtains the appropriate braking force. The other part of the energy, then converted into thermal energy consumed in the resistive grid, except for a small amount of consumption in the car insulation, most of the cooling system to be spread to the air. According to foreign literature analysis, when the ratio of open pit and ground is 300 meters and the annual ore and rock transportation volume is 6 million tons, if 100 tons electric car is used for transportation, the annual energy consumed will be less than that of deep depression Open pit mine is 3.58 million kilowatt hours, while open pit mine is 8.41 million kilowatt hours. This is a very impressive figure! Therefore, foreign countries have long been committed to recycling