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Two days later, Liu Yong drove Liu Meng to Kundi Company, this time I didn't see Sister Rong Rong at the front desk, probably still on vacation, Wu Yiwen was already waiting at the front desk, as soon as he saw Liu Meng, he greeted him with a smile, and treated big customers with standard etiquette.

"Mr. Liu, you are finally here, I haven't seen you for the Spring Festival, I have been looking forward to it, working overtime to make your order first. ”

Liu Meng smiled, "Trouble Mr. Wu, let's go, let's take a look, is there something done now?"

"The first batch has been prepared, put it in the warehouse, go this way. As he spoke, Wu Yiwen led the way inside, and saw a large workshop where many workers were busy.

"Mr. Wu is good!" a loud voice shouted.

A few people turned around and saw that it was Lu Dong, the security captain with a smile on his face, Lu Dong saw that the guests accompanied by Wu Yiwen were Liu Meng's two brothers, and after a little embarrassment on his face, he immediately saluted respectfully and shouted, "Mr. Liu is good." ”

"Captain Lu, hello, I haven't seen you for the Spring Festival, you have gained a lot of weight, and your quality of life is good. ”

"Huh. Lu Dong grinned, revealing a mouthful of white teeth, and several front teeth were very exposed, looking quite happy.

"Alright, let's get busy. Wu Yiwen said, pulled Liu Meng to continue the visit, pointed to a bunch of accessories and said: "Mr. Liu, look at it, these are the motors embedded in the rear wheels, they are the best materials used, and they will be fine after ten or eight years." ”

Liu Meng looked at it and was still very satisfied.

I went around and looked at a few accessories in detail. It's all about the same as the contract, and when the tour is about to be finished, Lu Dong holds a tray with a few cups of hot coffee. He walked over with a smile and said, "Mr. Wu, Mr. Liu, let's have a cup of coffee." ”

Standing aside with a smile on his face, Liu Meng glanced at him, thinking that this Lu Dong was quite flexible, no wonder he was only the captain of the security guard. is also a talent, waved his hand, and said with a smile: "Captain Lu." It's rare that you have this mind, but I really don't like coffee. ”

Wu Yiwen also smiled, "That's it." Mr. Liu likes to drink tea. Xiao Lu, you have to remember the next time you are courteous, hehe. ”

As he spoke, he took a cup of coffee and drank it.

Lu Dong nodded very excitedly, and went down, not annoying at all, depending on the opportunity.

"Mr. Wu, my company hasn't done it yet, so I don't want the goods for the time being. Can you let me take one set back and assemble it first? It is also necessary to debug the internal control circuitry. When he walked out of the workshop gate, Liu Meng asked.

"What's wrong with this, that little Lu, come here. Wu Yiwen happened to see Lu Dong retreating to the side, and hurriedly beckoned to him.

"Mr. Wu, if you have any orders, just say it. Lu Dong came over with a smile, and he was on call for the leader's call, smiling like spring.

"The goods ordered by Mr. Liu, you go for a trip, prepare two sets, and let Mr. Liu take them away in a while, hurry up. Wu Yiwen commanded.

After Lu Dong wrote it down, he quickly ran to do it.

"Hehe, it's really troublesome Mr. Wu, when the time comes, it will be deducted from these two sets. Liu Meng was also very polite to Wu Yiwen.

"Mr. Liu is too polite, business-speaking, we are partners, and we intersect privately, you are my brother, what is this little thing, these two sets will be given to you by the eldest brother." Wu Yiwen, a veteran in the business field, suddenly narrowed the distance between him and Liu Meng.

The atmosphere was even more harmonious for a while, like brothers who hadn't seen each other for a long time, when they arrived at the living room, Wu Yiwen personally made a pot of tea, and the two chatted while drinking tea.

Liu Yong always sat on the side, rarely spoke along the way, Liu Meng knew that his brother was such a character, he was happy and quiet, and he could help him.

At noon, Wu Yiwen wanted to leave Liu Meng's two brothers for dinner, Liu Meng politely refused, and after getting two sets of accessories, he was more anxious to go back to debug the circuit board.

The back of the car and the trunk are stuffed, only to install two sets of electric bicycle accessories, on the way back Liu Meng was very happy, Liu Yong said at this time: "Mengzi, how do we sell this electric bicycle?

Liu Meng didn't really understand this, so he thought about it and replied: "I'm afraid I can only try it according to this method first, just after these two sets are done, I will contact a few big cities to take a look." ”

Good products come out, always have to adapt to the market, Liu Meng is very confident in this, mainly because in his impression, the sales of electric bicycles are very hot after they come out, and many manufacturers are vying to follow suit, forming a considerable market.

After returning home, Sister Xiaoyun had already prepared a meal, which was fragrant and attractive, and after eating, Liu Meng was in a hurry to install the two sets of accessories with his brother.

The circuit control board mailed by Su Ling had arrived yesterday, and Liu Meng also called her to inquire about the situation in Bingcheng, Su Ling was very interested, and he listened to the joy, the two technical nerds had already gone back, and they were also involved in the production of remote-controlled small aircraft.

Regarding how to sell, Liu Meng didn't ask, let go of Su Ling, he wouldn't intervene more, the goal he set for himself was very clear, in fact, he was not very good at doing business, as long as he mastered the core of every technology, as well as the profession and trademark.

It is possible to ensure that everything is under control, and given full freedom, everyone can exert their own initiative.

After the control board was installed, the battery was still electrified, Liu Meng was very interested, and he was ready to ride an electric car around the community, and asked Liu Yong to do it, but the electric door was hit to the end and the car did not go, and after Liu Yong came down, he still did not go.

Unexpectedly, Liu Meng frowned and thought about it, and patted his head, it must be that the motor is blocked, this batch of motors, Wu Yiwen is indeed full of materials, and the maximum torque has increased a little, which also leads to a large starting current.

This is the same as when the car starts, the torque required is the maximum, and it must start in first gear. The same is true for the motor of the electric bicycle, when it is stationary, the motor is like a coil, which is equivalent to a short circuit, which will produce a huge current and stall.

Thinking of this, Liu Meng rode up again, like a bicycle, first rode up, and then moved the electric door, and the degree suddenly soared, and he flew out as soon as he slipped through the smoke, Liu Yong was relieved when he saw it, and he was really afraid that his younger brother would invest so much money to go down and go down to waste.

After a while, Liu Meng turned back and said to Liu Yong with a smile, "Brother, you can try it, it's very fast, but you have to ride it like a bicycle first." ”

Liu Yong came back after a try, and nodded with a smile, "Mengzi, this is really labor-saving, and it can be ridden as a bicycle, and it is really good." ”

After personal experience, I also have confidence in electric bicycles, "As long as it is divided into a part of the profits of the merchants, they will definitely be willing, and we will go on a trip in the afternoon to talk about it." ”

After the love was satisfactory, Liu Yong also began to be very ambitious, thinking of doing his best to make a little achievements and get the recognition of Liu Xiaoyun's family as soon as possible.

"Not yet, when I modify the control algorithm inside, the problem of static start may be taken out to talk about things. As soon as he thought of it, Liu Meng handed over the car to his brother and ran upstairs by himself.

When Su Ling mailed the control board, it included the opening equipment of the control chip, and the circuit board itself did not need to be improved, as long as the control program inside was recompiled and burned into it.

Liu Meng was also in a hurry, got the control board, and only wrote a set of simple and runnable programs and fired it, which gave rise to the problem of static blockage.

The nature of the technical nerd was immediately exposed again, and when encountering a technical problem, it must be solved quickly, and it cannot be delayed for a moment.

The battery output DC in the electric bicycle, and the motor uses an AC synchronous motor, which requires the control board to convert the artesian current into AC electricity.

The problem of motor stall is very common, that is, the problem of control algorithm, the simplest IP, IPD control algorithm can be realized, but there is a difference in performance.

Liu Meng began to improve, naturally will not be satisfied with just solving the problem, but completely solve the problem, this research is an afternoon, repeatedly simulate the control algorithm, when stationary, the current gradually increases, to achieve the smoothest.

It only took 4 hours for Liu Meng to solve it perfectly, and by the way, this technology was written into a patent, and it is a method patent, "a method for electric bicycles to start stationary", and the efficiency is not high.

In the process of solving this problem, Liu Meng also thought of the electric energy recovery system he had driven before, electric bicycles actually need brakes in many cases, if the process of reduction, can convert the motor into a motor, what will the effect be?

This is the way of thinking about a scholar, drawing inferences from one another, never limited to the present, but scattered.

The motor becomes a motor, on the one hand, it has the effect of braking, and on the other hand, it can also return a part of the electric energy back to the battery to achieve the purpose of energy saving, which is definitely a key technology in electric bicycles.

It's just that the braking process is usually uncontrollable, often a brake, immediately added, how to quickly convert the state of the motor and the motor?

This problem also stumped Liu Meng for a while, and then I realized that there was a reason why many electric vehicle merchants did not consider this problem in the past, the technology is more difficult, and it is easy to have potential safety hazards when considered, which is a bit thankless.

I didn't have an idea for a while, so I rubbed my head that was a little swollen, and had to stop thinking for a while.

And Sister Xiao Yun had already shouted that she was done eating, Liu Meng stretched her waist and stood up, her body and mind were relaxed for a while, and she was really interested in technology, and secretly thought that she would have plenty of funds in the future, and set up a real room to concentrate on opening some electrical products that she once dreamed of, the kind that was absolutely awesome, just like Iron Man. (To be continued!)

PS: Thank you for your support and understanding, the fat man is very touched.