电动车因其节能、环保、简洁、实用而深受人民群众喜爱,迅速在我国得到推广普及,骑电动车现已成为人们的时尚。电动车中涉及电学、力学、光学、热学等多方面物理知识,下面我将举例分析说明。一、电学方面(1)电动车蓄电池常用的是硫酸铅电池,分为48 V、60 V和72 V几种。它工作时先将电能转化为化学能储存起来,在行驶时再将化学能转化成电能,体现了能量的转化和守恒定律。(2)直流电动机是根据磁场对 Because of its energy-saving, environmentally friendly, simple and practical, electric vehicles are deeply loved by the people and rapidly popularized and popularized in our country. The riding of electric vehicles has become a fashion for people. Electric vehicles involved in electrical, mechanical, optical, thermal and other aspects of physical knowledge, I will give an example analysis. First, the electrical aspects (1) electric vehicle batteries commonly used lead sulfate batteries, divided into 48 V, 60 V and 72 V several. When it works, it first converts electric energy into chemical energy and stores it, and then transforms chemical energy into electric energy while driving, which reflects the law of energy conversion and conservation. (2) DC motors are based on magnetic field pairs