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电动车要正常工作，需要有以下几个常用的部件：电瓶，控制器，电机，转把。其他的功能线刹车断电，倒车线，三速线等都来自于控制器。下面将各元件工作关系，工作原理一一讲解。
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+ L3 J. W% c7 H0 h5 ~; t5 J1，电瓶给全车用电设备供电，在将电瓶接入车上时注意正负极不可接反，而且必须保证负极不能与车体搭铁短路。# U7 c4 Z2 g4 T
- Z; y5 v3 \% F2，控制器供电端一共三根线，常见粗红线接电瓶总正极，粗黑色线接电瓶总负极线，细红线接电门锁出线（某些控制器为细黄线），一般情况下这三根电源线在一个插口上。
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9 n \8 v. L4 S% f0 e3，控制器供电正常后才能正常工作，但要驱动电机转动还要满足以下条件：转把工作正常，刹车断电工作正常，电机主相线和霍尔线都正常。
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4，控制器工作时，就会自动检测电机霍尔的位置信号，并给转把正负极之间提供5v直流电，拧动转把时，转把信号端霍尔电压由低到高变化并输向控制器，此时只要电机主相线连接没有问题，控制器得到信号后就可以向外输出功率，驱动电机转动。这就是电动车工作的一个大概原理。
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