The "brain" and structure of an electric bike - for Ebike buying, ridding, maintenance and repair

Ebikes are more and more popular. Most ebike components are controlled by the controller of the electric bicycle, like the human brain or heart.
There is a microcomputer chip inside the controller, and it is said that it is the brain of the entire electric bicycle because of this chip. This chip's market retail price is only one or two dollars. In fact, it's very, very simple: it's a very large-scale integrated circuit itself, containing millions of transistor switching circuits. Since the 1980s, it has gradually become popular, and now there are many of him in almost every household appliance. The speed at which it has grown is astounding. A small single-chip microcomputer chip that retails for one or two dollars is also complete, equivalent to a micro computer. Although it is small in size and light in weight, it contains an arithmetic logic unit ALU, read-only memory ROM, and read-write memory RAM. Clock crystal oscillator CLOCK, interrupt system Interruption, input and output system IO, bus BUS, timer TIMER and so on. . . computer architecture. . . Hi! What are you talking about, it's too much! . . . Based on my years of professional study and work summary, I can explain what is the core principle of computer in one sentence. This is "if...then..."
The computer's so-called logic circuit composed of gate circuits, in the final analysis, is to solve if, then.
Take the brake of an electric bicycle, for example, when the brake is applied, a switch hidden inside the brake is triggered. This wire will pass a 5v voltage to a pin on the chip inside the controller. The microcontroller will think: If there is voltage on this pin, I will stop sending power to the motor, and it also wants to do it, cut off the power supply. Until when? That is, if, remember this, if the rider releases the brakes, normal power is restored. The braking process is over.
Most electric bicycles are not equipped with power aid brakes. Ebike stops the motor when braking, which will not affect the braking process and save some power. It's also very kind. By the way, the early cars did not have power assist brakes. The chips in the car are so important that the car factory will affect the overall car factory rate because of the shortage of chip supply.
We know that the battery voltage of electric bicycles is generally relatively high, 36V, 48V or 72V, of course, there are higher or lower voltages. Generally speaking, the higher the voltage, the better, it can directly provide power to the motor. However, microcomputer chips, circuit boards, various sensors, and lamps all use a relatively low voltage, 5V. This transistor is responsible for stepping down the 48V to 5V for use by these parts. The motors need 48V electricity, and they don't go directly through them either. In particular, most of the electric bicycle motors are brushless motors. Because compared with brushed motors, it is more reliable, power saving, low noise, small size, long life and no sparks. The brushes of brushed motors are prone to sparks and are prone to wear.
The other is the Mosfet field effect transistor, which is equivalent to a switch. 6 in total. 3X2 pieces. When the throttle handle is turned, the controller transmits the power of the battery to the motor in the form of pulses, and the frequency of the pulses is determined by the signal from the Hall coil.
There is also a sensor in the throttle handle, it is also a sensor that uses the electromagnetic effect, that is, the Hall effect. So there are 3 wires. The voltages are 0, 5, 0.80-3.80V, respectively.
The strength of the pulses the controller sends to the motor is controlled by this sensor. If it is 0-0.8V, no power is delivered. If it is 4V, the maximum power is delivered, and the power is delivered in proportion to the voltage value. At the same time, the frequency of the pulse is determined according to the position of the motor rotor sensed by the Hall coil, which coil or coils are energized.
It can be seen that the electrical part of the electric bicycle is a whole and the result of a teamwork.
The principle of power assist PAS is very similar, the only difference is the sensor. The sensor for the boost is not the distance of the magnet, but the speed. The LCD display central control panel, that is, the LCD display is not simple. This display also has a microcomputer chip inside, which also has very powerful functions and a very complex structure. Once again, it can be simply pretended to be a small robot living inside. This robot is amazing, very smart and dedicated. He can communicate with the dancing robot inside the controller on an if-then basis. For example, the two robots can cooperate to calculate the speed of the motor according to the Hall signal of the motor, and then calculate the speed of the riding according to the size of the tire. Then display this speed on the dashboard. Similarly, battery capacity, voltage, current, driving distance, etc. can be calculated and displayed on the screen.

[@keith0609]

謝謝你 分享這些知識 影片製作優美

[@user-es4mz4ik7t]

老師教學的非常棒,又有動態教學非常清楚的講解,讓我受益良多,謝謝您

[@howard4709]

一个从事电动自行车多年的销售，真心感到受教了👍

[@RedHairBronson]

谢谢你！互相学习。

[@sychang888]

非常通俗易懂的入门介绍，把基本原理阐述的深入浅出。很棒！

[@jingwang-eb2cs]

作者的视频很有干货！

[@jasonteng6728]

感謝您~~~ 非常清楚的講解讓我知道我的e-bike的動作基本原理

[@haclee47]

老师的讲解醍醐灌顶，有助于我换控制器

[@user-xy3vs5ff6i]

哇說的太完美了，受益良多~謝謝您嘍…

[@MangGai168]

很有用的视频❤
感谢分享🙏❤

[@stevechiang7278]

Excellent video, learned a lot, thanks.

[@1102azsx]

灰熊仔細的解說而且誏人易懂!难得的好影片!

[@user-tl5hj5zo6g]

完全明白，清楚、十分精彩！

[@fatelin281]

講解得很好

[@Will-xr1ke]

感謝您~ 超實用

[@user-pc7bm1qh4b]

谢谢分享，制作精美

[@kaimengieong8803]

很好！

[@kobe_travel]

讲解的通透，深入浅出，配合动画，秒懂

[@benny10241]

謝謝老師

[@bobbychan9242]

谢谢老师！真好的视频

[@RedHairBronson]

互相学习，谢谢你的评论！🤝

[@huanliu1190]

说得透彻，动画很有意思。

[@RedHairBronson]

谢谢你的评论！🤝

[@samuncle6635]

先生做的視頻很棒。能否做一期汽車ABS系統的視頻，用和此視頻中類似的動畫？汽車的ABS很普及，也很昂貴，懂得ABS的結構及如何工作，價值大大的。

[@ItsCoolKen]

Very nice!

[@RedHairBronson]

Thanks!

[@asdfasdfafsadf7883]

你好！我收看很多你发电动车的影片，受益良多。我有个问题想要请教：我的电动车电量低时，起步转动油门，马达会会哒哒哒哒哒地响，要是我推动一点点车子，让后轮往前转动的同时起步，马达就不响了。我在想这是不是我的马达相位设置有问题，如果是的话，可以怎么解决？

[@RedHairBronson]

更换霍尔线，一般要打开马达，自己不太好修理。最简单的可以用排除法判断一下是控制器的问题，还是马达的问题。如果你没有配件，只能找修理店或是厂家看一下了。

[@chuleiqian2821]

本科毕业做的类似的一个控制系统，视频做的真的很不错，但是感觉好像对于日常使用维护有点超纲了hhh

[@yangyuan3288]

老板，请问视频是用什么软件制作的，我是电动自行车Bafang厂家，你的视频很有教育意义。可以跟您学习学习。

[@RedHairBronson]

可否和你私聊一下，我也需要请教一些问题。我的电邮是[e-mail]

[@user-qd3sp6bs7h]

老師感謝您的分享💖，能否請教老師，如果我想加裝前後方向燈的話，該如何操作呢?需添購那些材料呢?

[@RedHairBronson]

如果後加裝任何控制器不支持的設備，都無法整合到控制面板。
所以可以考慮購買單獨的車燈，那麼網上前後的和轉向的車燈都有的賣。
不知道我是否回答了您的問題。

[@user-qd3sp6bs7h]

@@RedHairBronson 了解，非常感謝老師的分享，謝謝您🥰

[@a0980037556]

謝謝專業導師，比老師講得更評細更精彩，從此只鎖定專業導師的頻道，請導師是否可以有專有英語！名稱補充一下，因爲零件有名詞，而且我的英語又不太行，謝謝！

[@ericcoen8894]

你嘗試過可以提高30%效率的charger嗎？還有大陸alibaba上有賣48V，14A的替換電池，那個如果可用，理論上可以提高30-40%續航表現

[@RedHairBronson]

我正在嘗試製作一個備用電池，這樣續行增加100%！視頻就快要做好了。

[@ericcoen8894]

@@RedHairBronson 期待中！這個將是含金量最高的一期影片

[@ericcoen8894]

@@RedHairBronson 可否提前透露所使用備用電池購買管道？以及騎行攜帶方式？

[@user-nw1oy5ll6q]

可以从零开始吗？我不会电路，现在想学

[@dlee8787]

单片机，这东西上学时学过编程，后来都忘了

[@user-wz8vx4mk4g]

同時也是發电机

[@user-yr6kc2dv1m]

要靠的是我技術不好就 跌倒水溝裡面了啦

[@xmars2046]

感觉是给小孩子看的

[@RedHairBronson]

多看几次会变成小孩子