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Text Chapter 1722 Power Bank

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    "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 taking out a set of five red batteries the size of firecrackers, about half the size of a palm and less than one centimeter thick, and placed them on the circuit board. DreamPad and DreamStars  The shared power cord can be plugged directly into the circuit board, and a DreamStars phone is naturally connected to the other end.

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

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

    The working principle of power bank, that is, mobile power supply, is two processes - voltage reduction and voltage boosting.

    ? Voltage reduction is the process of charging the power bank. When the power bank is charged through the power adapter, the circuit board converts the 5V voltage into the 3.7V of the power bank cells, 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, when it is output again, the circuit board increases 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 charging a mobile phone directly with a charger. The input voltage is stable. Normal use will not damage the battery.

    As for the reason why the mobile phone is recharged, it lies in other aspects.  First of all, you must choose a power bank from a big brand, and secondly, you must pay attention to its operation. Only in this way can you maximize the use of the power bank and protect your mobile phone battery.

    The experiment is not conducted alone, during the charging and testing process.  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, and there is also an investigation into battery safety, such as heat resistance, freezing resistance, corrosion resistance, etc., which are also very important.

    Then, short-circuit protection, temperature protection, battery core protection, etc., which are functions of the circuit board, are also undergoing another combination experiment here.

    As for electromagnetic interference and electromagnetic radiation.  Engineers are also busy, and even after the battery and circuit board are installed, they have to test the flammability.

    The glass sterile room of Nuoda's laboratory seemed very busy for a while.

    But they are also elite experts in this field. They have done many extreme experiments before, and now they feel quite methodical.

    Xiao Qi wants to make a power bank.  Naturally the best quality.

    The circuit boards used are directly customized in the North American laboratory of Mingxiang Holdings. The experts there purchased many of Texas Instruments' best technologies last year. One of them is the circuit board technology that Texas Instruments is proud of.  It has multiple safety protection designs in terms of current, short circuit, overcharge, over-discharge, voltage stabilization, etc.

    The battery cell pack also uses lithium-ion polymer cells, which have better safety performance than ordinary 18650 lithium cells.  There will be no explosion, which naturally eliminates the biggest safety hazard. Moreover, the discharge characteristics of lithium-ion polymer cells are more stable and the efficiency is very high, but it is more expensive.

    Those power banks that were sold in the 20s, 30s, 350s and 50s in the previous life naturally used ordinary 18650 lithium batteries, or even inferior ones.

    In addition, when it comes to the choice of casing, Xiao Qi also uses an all-aluminum alloy metal casing, which costs 3 US dollars, almost 22 yuan.

    Those aluminum alloy factories in Chengdu.  An expensive CNC high-precision CNC machine tool was specially purchased to cut the one-piece metal shell to meet Xiao Qi's needs.

    This technology happens to be the technology used in the casing of MacBook laptops, both in terms of structural strength, resistance to drops and collisions, as well as resistance to sweat and corrosion.  All have very perfect performances.

    There is also an "LCD screen" that most power banks do not have. The small LCD screen can display the remaining power, which seems to have more than doubled the quality.

    "This time's battery module requirements are the first in the world." Zuo Fan said with emotion while watching: "If we hadn't made ultra-thin batteries before, there would be no way to improve on this basis now.  , and then produce 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, which is 1 centimeter, which is the same thickness as the odd DreamStars, so the battery must beIt needs to be about 7mm.  "Zuo Fan explained: "Because we have made batteries for DreamStars before, there is no need to worry about the thickness of the battery, but this time the connection between the width adjustment and the battery core pack has become the most important thing.

    It is necessary not only to ensure the balance between input and output power, not to allow the power imbalance between each other, but also to ensure that they are all under the management frequency of the same circuit board.  Not to mention that the pressure resistance, extreme temperature resistance, etc. of three battery chips are much weaker than that of one battery. You must be most careful to ensure that there are no quality problems.  "

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

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

    "Eight dollars?" Qu Xingliang opened his eyes wide, "Is this for free?"

    The price Xiao Qi gave was 8 US dollars, and he didn¡¯t make a penny in Vietnam. Qu Xingliang didn¡¯t care whether he could make money, as long as the turnover was high, but if he didn¡¯t make a penny, it was still hard to explain to the board of directors.

    Zuo Fan smiled: "Director Qu, have you forgotten? Qi Shao gave a total of 10 US dollars together with the assembly fee. In Vietnam, a worker's monthly salary is only more than 300 RMB, even if he pays double  The overtime pay and assembly fee are basically less than 0.1 US dollars per unit, and the cost is negligible. Calculating our overall profit is close to 20%, which is very good.¡±

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

    "In business, this is normal. No one can do things for nothing." Xiao Qi replied calmly without looking back.

    The young man was concentrating on reading the various data inside, and naturally had no time to pay attention to such trivial matters, but when he heard Qu Xing's conscience, he was suddenly surprised.

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

    Thinking about it carefully, Qu Xingliang realized that he really had nothing in return for Xiao Qi.

    Cao Zhichong couldn't be more fawning over Xiao Qi's woman, Qiao Guo'er, who was called the "goddess". He even sent a confidant to take care of all kinds of relationships for Qiao Guo'er.  People mistakenly thought that Qiao Guoer was Cao Zhichong's woman.

    There is also Kang Yuanjun of Huaguo Dentsu. Just look at how he fawned over Xiao Qi in Sichuan Province. Dentsu¡¯s infrastructure aspires to be better than that of the capital, plus Xiaoniao.com, Weibo Company, WeChat Company, etc.  Which series of business does not mobilize the best resources and give the best price?

    The more he thought about it, the more Qu Xingliang felt like he was about to break out in a cold sweat: Is this Qi Shao¡¯s covert expression of dissatisfaction with me?  If I continue to be so confused, how can I follow Qi Shao?  Cao Zhichong and Kang Yuanjun were almost successful, so why should I still fall on the road to success?  No way!

    From this moment, his thoughts were completely out of sight. He wanted to run back immediately to discuss with his cousin Liu Chang how to express his sincere gratitude to Mr. Qi!

    Thinking about it, it really shouldn¡¯t happen. I¡¯m still very careless and think it¡¯s okay to just lean towards Qi Shao. But do they still care about you joining me?  Isn't this just asking for trouble if I just say thank you after doing something?

    Qu Xingliang stopped talking, while Zuo Fan and Xiao Qi chatted about the entire power bank inspection process.

    As a technician, Zuo Fan had already fallen in love with Xiao Qi's five-body machine after getting the design drawings given by Xiao Qi. When he assembled the whole machine a few days ago and held it in his hand, he felt like  I feel so moved that I want to cry.

    beautiful!

    Too beautiful!

    You don¡¯t even need to look at what¡¯s inside, just look at and touch the power bank, and you¡¯ll fall in love with it and be willing to take it home.

    ¡° As expected, only a genius like Xiao Qi can make this kind of product that takes ergonomic and aesthetic principles to the extreme.

    To make a power bank with simple functions so beautiful, beautiful and practical, it¡¯s hard not to sell it!

    Because he was convinced by Xiao Qi¡¯s words, Zuo Fan felt a little less proud in the professional field and a little more respectful when they chatted.

    The experiment was carried out slowly and smoothly during the chat.

    Because they were conducted at the same time, the various experiments were almost completed after only four hours.

    The laboratory is inherentlyIt can simulate various environments and shorten the time. Some of the tests that require a long time were started by the engineers of Fairy Company a few days ago, and they are expected to be completed today.

    With Xiao Qi¡¯s strict requirements and the correct direction given, the result will of course be passed!

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

    The joy of success is so sweet!  !
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