Chapter 1722 Charging Treasure

"let's start!"

When Xiao Qi and Qu Xingliang stood inside the laboratory, outside the five glass rooms, Zuo Fan waved to 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 less than one centimeter thick, and put them on the circuit board. The dream pad and dream The shared power cord of stars can be directly plugged into the top of the circuit board, and the other end is naturally connected to a dream stars mobile phone.

On the side of the power supply, there are two machines of different sizes, which respectively display the power transmission status of the battery pack, the current power charging status of dream stars, and the voltage change status during the transmission process.

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

The working principle of charging treasure, that is, mobile power supply, is two processes - buck and boost.

The step-down is the process of charging the charging treasure. The charging treasure is charged through the power adapter, and the circuit board converts the voltage of 5v into the 3.7v of the charging treasure battery, thereby storing the power in the battery pack.

Boosting is the process of using a power bank to charge a mobile phone, because the voltage of the mobile phone is 5v, so when it is output again, the circuit board raises the voltage from 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, and it will not damage the battery under normal use.

As for the reason why the mobile phone is badly charged, it is due to other problems. First of all, you must choose a power bank of a big brand, and secondly, you must pay attention to the operation, so that you can use the power bank to the maximum extent and protect the mobile phone battery.

Experiments are not conducted in isolation. During the charging testing process, in these five glass sterile rooms with a total area of ​​more than 300 square meters, there are more than a dozen groups conducting tests together.

In addition to charging, there is also discharge, as well as investigations into battery safety. For example, heat resistance, freezing resistance, corrosion resistance... etc., this is also very important.

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

As for the two aspects of electromagnetic interference and electromagnetic radiation, some engineers are also busy, and even after installing the battery and the circuit board as a whole, they also want to test the flammability.

In the glass sterile room of Nuo Da's laboratory, it seemed very busy for a while.

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

The power bank that Xiao Qi will make is naturally of the best quality.

The circuit boards used are directly ordered in the North American laboratory of Mingxiang Holdings. The experts there purchased many of Texas Instruments' essential technologies last year, one of which is the circuit board technology that Texas Instruments is proud of. All have multiple security protection designs.

The battery pack also uses lithium-ion polymer batteries, compared to ordinary 18650 lithium batteries. The safety performance of this kind of battery is more guaranteed, and it will not explode, which naturally eliminates the biggest safety hazard. Moreover, the discharge characteristics of lithium-ion polymer batteries are more stable, and the efficiency is also very high, but the price is more expensive. .

Those 20, 30, 35 and 51 charging treasures in the previous life naturally used ordinary 18650 lithium batteries. There are even worse ones.

In addition, in terms of the choice of casing, Xiao Qi also uses an all-aluminum alloy metal casing, which costs $3, or more than 22 yuan.

Those aluminum alloy factories in Rongcheng specially purchased expensive cnc high-precision numerical control machine tools to cut the one-piece metal shell. Meet Xiao Qi's needs.

This kind of technology happens to be the technology used in the case of the K laptop computer, and it has a very perfect performance in terms of structural strength, impact resistance, and anti-sweat and anti-corrosion.

There is also a "LCD screen" that most charging treasures do not have, on the small LCD screen. It can display how much power is left, and it seems that the grade has more than doubled.

"The battery module requirements this time are the first in the world." Zuo Fan looked and said with emotion: "If we hadn't made the ultra-thin battery before, there is no way to improve on this basis now. , and then come up with the product within three months!"

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

"The body thickness of the whole power bank is only 10mm, that is, 1 centimeter, which is the same thickness as the rare dream stars, so the battery must be about 7mm." Zuo Fan explained: "Because we made batteries for dream stars before. , so there is no need to worry about the thickness of the battery, but this time the connection between the width adjustment and the battery pack has become the most important place.

It is necessary to ensure the balance between the input and output power, and not to allow the power imbalance between each other, but also to make them all under the management frequency of the same circuit board. Not to mention that the pressure resistance capacity of the three battery chips, the ability to withstand extreme temperature, etc., are much weaker than that of one battery, and the utmost care must be taken to ensure that there are no problems in quality. "

Qu Xingliang frowned and asked, "If it's so troublesome, how much would it cost?"

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

"8 dollars?" Qu Xingliang opened his eyes wide, "Is this for nothing?"

The price Xiao Qi gave was 8 US dollars, and he didn’t earn a penny in Vietnam. Qu Xingliang didn’t care if he could make money, as long as the turnover was high. But if he didn’t earn a penny, he still couldn’t explain it to the board of directors.

Zuo Fan smiled: "Director Qu, have you forgotten? Qi Shao paid a total of 10 US dollars together with the assembly fee, while in Vietnam, a worker's monthly salary is only more than 300 RMB, even if they are paid double In terms of overtime pay, the assembly fee is basically less than 0.1 US dollars per unit, and the cost is negligible. When calculated, our overall profit is close to 20%, which is not bad.”

"It turns out there is this way." Qu Xingliang laughed, and turned to Xiao Qi embarrassedly: "Qi Shao, I'm sorry, just now I was worried that the people above would be in trouble..."

"In the business field, it's normal for business to talk about business. No one can make people do things for nothing." Xiao Qi replied calmly without turning his head.

The young man was concentrating on looking at the various data in it, so he naturally didn't have time to deal with such trivial matters, but when he heard Qu Xingliang's heart, he was suddenly shocked.

Could it be that Qi Shao is reminding me that he has given me so much help, and I should repay him?

After thinking about it carefully, Qu Xingliang realized that he really didn't give Xiao Qi anything in return.

Cao Zhichong was so fawning on Xiao Qi's woman, the so-called "goddess" Qiao Guoer, that he couldn't be more ingratiating. People mistakenly think that Qiao Guoer is Cao Zhichong's woman.

There is also Kang Yuanjun from Huaguo Dentsu, look at how he flattered Xiao Qi in Shuchuan Province. Series of business, which is not mobilizing the best resources and giving the most favorable price?

The more he thought about it, the more Qu Xingliang felt that a cold sweat was about to break out: Is this a veiled expression of dissatisfaction with me? If I continue to be so confused, how can I hang out with Qi Shao? Cao Zhichong and Kang Yuanjun have almost achieved success, so do I still have to fall on the road to success? Can't!

His thoughts started at this moment, and he was completely out of sight. He wished he could go back and discuss with his cousin Liu Chang immediately, how could he express his sincere thanks to Qi Shao!

Thinking about it, it really shouldn't be, I'm still careless, and I think it's enough to rely on Qi Shao wholeheartedly, but don't they still care about you? After doing something, just thank you with one mouth, isn't this looking for money?

Qu Xingliang didn't speak anymore, but Zuo Fan and Xiao Qi were chatting about the whole testing process of the power bank.

As a technical person, after Zuo Fan got the design drawings given by Xiao Qi, he had already cast his eyes on Xiao Qi's five bodies. Feeling moved to cry.

beautiful!

Too beautiful!

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

This kind of product with ergonomics and aesthetic principles brought into full play is really only able to be made by a genius like Xiao Qi.

To make a power bank with simple functions so beautiful, beautiful and practical, it is difficult not to sell it well!

Because of Xiao Qi's oral conviction, when chatting, Zuo Fan lost a bit of pride in the professional field and increased a bit of respect.

The experiment was also being chatted, slowly and smoothly.

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

The laboratory can simulate all kinds of environments, plus shorten the time. Some of the tests that must take a long time were started by the engineers of Fairy Company a few days ago, and they will be completed today. .

With Xiao Qi's strict 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! !