Age of Dreams

"let's start!"

When Xiao Qi and Qu Xingliang stood inside the laboratory, outside the five glass rooms, Zuo Fan waved at the technicians inside.

I saw one group of engineers took out a set of 5 red batteries the size of a firecracker, about half the size of a palm, and a thickness of less than one centimeter. They were placed on the circuit board, DreamPad and DreamStars. The shared power cord can be directly plugged into the circuit board, and a DreamStars mobile phone is naturally connected to the other end.

On the side of the power supply, there are two machines of different sizes, which show the power delivery status of the battery pack, the current power charging status of DreamStars, and the voltage change status during the delivery process.

Some people say that using a power bank actually damages the battery of a mobile phone. In fact, this statement is not accurate.

The working principle of power bank, that is, mobile power is two processes-step-down and step-up.

Step-down is the process of charging the power bank. The power adapter is used to charge the power bank. The circuit board converts the voltage of 5V into the 3.7V of the power bank cell, so that the power is stored in the battery cell group.

Boosting is the process of using a power bank to charge the mobile phone. Because the voltage of the mobile phone is 5V again, when outputting again, the circuit board will increase the voltage of 3.7V to 5V, and then the power can be directly input into the power bank.

Do you understand?

In fact, this is the same as directly charging the mobile phone with a charger. The input voltage is stable. Normal use will not damage the battery.

As for the reason for the bad charging of the mobile phone, it lies in other aspects. First of all, we must choose a major brand of power bank, and secondly, we must pay attention to the operation, so as to maximize the use of the power bank and protect the mobile phone battery.

The experiment is not carried out alone, in the process of charging and testing. In these five glass sterile rooms with a total area of ​​more than 300 square meters, more than a dozen groups are conducting tests together.

In addition to charging, there is also discharge, as well as battery safety investigations, such as heat resistance, freezing resistance, corrosion resistance, etc., which are also very important.

Then short-circuit protection, temperature protection, cell protection, etc. belong to the circuit board functions, and another combination experiment is carried out here at the same time.

As for electromagnetic interference and electromagnetic radiation. There are also engineers who are busy, even after installing the battery and the circuit board as a whole, they have to test the flammability.

Inside the laboratory glass sterile room of Norwegian University, it seemed very busy for a while.

But they are also experts in this field. They have done many extreme experiments before, and they feel a little orderly at this time.

The power bank that Xiao Qi is going to make. Nature is the best quality.

The circuit board used was directly customized in the North American laboratory of Mingxiang Holdings. The experts there purchased many of Texas Instruments’ elite technologies last year. One of them is the circuit board technology that Texas Instruments is proud of. There are multiple safety protection designs in many aspects such as current, short circuit, overcharge, overdischarge, and voltage stabilization.

The battery pack also uses lithium-ion polymer batteries, which are more secure than ordinary 18650 lithium batteries. There is no explosion, and the biggest safety hazard is naturally eliminated, and the discharge characteristics of the lithium-ion polymer cell are more stable, and the efficiency is also very high, but it is more expensive.

Those power banks of twenty, thirty, thirty and fifty one in the previous life naturally used ordinary 18650 lithium batteries, even inferior ones.

In addition, Xiao Qi also uses an all-aluminum alloy metal shell in the choice of shell, and the cost is 3 US dollars, which is almost 22 yuan.

Those aluminum alloy factories in Rongcheng. Specially purchased expensive high-precision CNC machine tools to cut the one-piece metal shell to meet Xiao Qi's needs.

This kind of technology happens to be the technology used in the case of laptop computers, whether in terms of structural strength, drop resistance and impact resistance, or sweat and corrosion resistance. All have a very perfect performance.

There are also “liquid crystal screens” that most power banks do not have. The small LCD screen can display how much power is left, which seems to have more than doubled the grade.

"This time the battery module requirements are still the first in the world." Zuo Fan said with emotion while watching: "If we hadn't made ultra-thin batteries before, now there is no way to improve on this basis. , And then take out the product within three months!"

"What are the specific requirements?" Qu Xingliang asked with interest.

"The thickness of the entire power bank is only 10mm, or 1 cm, which is the same thickness as the odd DreamStars, so the battery must be about 7mm." Zuo Fan explained, "Because we made the battery for DreamStars before, so There is no need to worry about the thickness of the battery, but this time the width adjustment and the connection between the battery cell group have become the most important place.

It is necessary to ensure the balance between the input and output power, and not to allow the power to be out of balance between each other, but also to keep them all under the management frequency of the same circuit board. Not to mention the pressure resistance and extreme temperature resistance of the three battery chips, which are much weaker than a single battery. You must be careful to ensure that there is no problem in quality. "

Qu Xingliang frowned and asked, "How much is the cost if it is so troublesome?"

"When the laboratory just came out, the cost of a battery chip should be around US$12, but after mass production is reached, the cost can drop to around US$10." Zuo Fan said: "This is still the cost of our mainland China. If you go to Vietnam, basically a set of 8 dollars is enough."

"8 dollars?" Qu Xingliang's eyes widened. "Is this white work?"

Xiao Qi’s price was 8 US dollars. When he arrived in Vietnam, he didn’t make a penny. Qu Xingliang didn’t care whether he could make money. As long as his turnover was high, it would be fine. But if he didn’t make a penny, it would be difficult to explain to the board of directors.

Zuo Fan smiled: "Dong Qu, have you forgotten? Qi Shao paid a total of 10 US dollars along with the assembly fee. In Vietnam, a worker's monthly salary is only more than 300 yuan, even if you give them double As for the assembly fee, the overtime pay is basically less than US$0.1 per unit, and the cost is negligible. It’s not bad that we are close to 20% of the overall profit."

"It turns out that there is this way." Qu Xingliang laughed. He turned around and said to Xiao Qi in embarrassment: "Qiao Shao, I'm sorry, I was worried that the people above would have trouble finding it..."

"In the business field, in business, business, business, this is normal, no one can let people do things for nothing." Xiao Qi answered indifferently without looking back.

The teenager was concentrating on looking at the various data in it, so naturally he didn't have the time to take care of such trivial matters, but he was surprised when he heard Qu Xingliang's heart.

Is Qi Shao reminding me that he has given me so much help, and I should return him?

After thinking about it carefully, Qu Xingliang found that he really hadn't given anything back to Xiao Qi.

Cao Zhichong, who was called the "goddess" Qiao Guoer, fawned over Xiao Qi's woman and sent a confidant to take care of all kinds of relationships with Qiao Guoer. People mistakenly thought Qiao Guoer was Cao Zhichong's woman.

And Kang Yuanjun of Huaguo Dentsu, let’s take a look at his infatuation with Xiao Qi in Shuchuan Province. Dentsu’s infrastructure can’t be better than the capital, plus Xiaoniao.com, Weibo, WeChat, etc. In the series of business, how can it not mobilize the best resources and give the best price?

The more I thought about it, the more Qu Xingliang himself felt that a cold sweat was about to come out: Is this Qi Shao cryptically expressing his dissatisfaction with me? If I continue to be so confused, how can I follow Qi Shao? People Cao Zhichong and Kang Yuanjun have almost succeeded, do they have to fall on the road to success? No way!

His thoughts began at this moment, and he was completely out of sight. He wanted to run back and discuss with his cousin Liu Chang as to how to express his sincere gratitude to Qi Shao!

Thinking about it, it shouldn’t be right. I’m pretty daring. I think it’s all right to rely on Xiang Qi Shao, but it’s rare for people to go for it? Thank you with a single mouth after you do something. Isn't this just for fun?

Qu Xingliang said nothing, Zuo Fan and Xiao Qi were talking about the entire inspection process of the power bank.

As a technician, Zuo Fan had already thrown into Xiao Qi’s five bodies after getting the design drawings given by Xiao Qi. He waited a few days to assemble the whole machine. When he held it in his hand, he had all kinds of things. I feel so moved that I want to cry.

beautiful!

Too beautiful!

You don't need to look at what's inside, just look at and touch the power bank, and you will like it and be willing to take it to your home.

This kind of product with ergonomics and aesthetic principles to the extreme, really only Xiao Qi, a genius, can make it.

To make a power bank with simple functions so beautiful, beautiful and practical~www.readwn.com~ It is difficult to not sell it!

Because of Xiao Qi's oral conviction, Zuo Fan was less proud of his professional field and more respected when talking.

The experiment was also in the chat, slowly proceeding smoothly.

Because it was carried out at the same time, all kinds of experiments were almost done after only four hours.

The laboratory can simulate various environments and shorten the time. Some of the tests that require a long time were started by the engineers of the fairy company a few days ago, and the tests will be completed today. .

With Xiao Qi's demanding requirements and the correct direction given, the result is of course a pass!

When Xiao Qi gave them thumbs up, more than a hundred engineers suddenly cheered loudly.

The joy of success is so sweet! ! (To be continued. If you like this work, you are welcome to come to the starting point () to vote recommended votes, monthly tickets, your support is my biggest motivation. Mobile users please go to read.)