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Chapter 22 Theoretical 300W, urgent shortage of battery talents

SEG Technology Park.

Longxing Technology Experimental Base.

Chen Xing was taking the elevator to the fast charging laboratory on the fourth floor.

Fifteen minutes ago, he originally wanted to go home and sleep. After all, after traveling back and forth for several months, he couldn’t bear it anymore.

But I never expected it!

As soon as he signed a 120W star flash fast charging technology agreement with Rebus Luo Hao, news of a technological breakthrough came from the back end laboratory, and the theoretical power reached 200W.

What is this concept?

If 120W can fully charge a 3000 mAh battery in 10 minutes, then 200W Star Flash fast charging may reduce the charging time to less than 7 minutes.

For fast charging technology, under the premise of ensuring safety, naturally the shorter the time, the more satisfied the user will be.

“Ding——”

The elevator door opens.

As soon as Chen Xing walked out of the elevator, he ran into Ding Yaoping, who was about to go back to the employee dormitory to rest. The latter was stunned for half a second, and then reacted:”Did Chief Yang send a message to the president?”

“Well, he told me that there was a breakthrough in fast charging technology. Is anyone else involved now? Chen

Xing asked.

Ding Yaoping nodded, turned sideways and said,”I’m still studying the theoretical voltage. Let me go in with you.””

“Well, just taking a look, is there anything you need me to do?”

Chen Xing walked straight inside, while Ding Yaoping followed behind.

In the laboratory.

Yang Bochao was concentrating on the lithium-ion battery inside the sealed glass, and gradually increased the current power.

180W!

200W!

205W!

When the current reached 215W, the lithium-ion lithium battery suddenly bulged at a speed visible to the naked eye. It seemed that some violent reaction had occurred inside. With a”bang” sound, the battery hit the glass cover hard and fell back to the table. The fire engulfed the entire battery.

Yang Bochao took out his notebook and recorded the experimental data.

Is 215W the limit?

No!

He feels that there is still room for improvement, and batteries may be a breakthrough.

When he was thinking about how to go further, Ding Yaoping shouted at the top of his lungs:”Chief, the president is here to check our results.”

“President! Yang

Bochao looked back and saw Chen Xing walking slowly. He put down his record book and greeted him quickly:”Why are you here so late, CEO? It won’t be too late for the inspection tomorrow.””

“I just finished the press conference and dropped by when I saw your good news.”

Chen Xing smiled and noticed the still burning battery:”Is this testing the maximum power?”

“Well, it spontaneously ignited as soon as it reached 215W. The current lithium-ion battery technology seems to be unable to withstand current input above 210W.”

Yang Bochao just finished speaking and put forward a new plan:”But I think 210W is not the limit of fast charging, but the limit of current battery technology. If we want to break through this power value, I think we can break through it from the battery aspect.””

Yang Bochao is indeed a purple-quality talent. Although he only has a college degree, he has endless ideas for improving charging power.

At present, there are only two methods to increase charging power: increasing current and increasing voltage. Both methods have disadvantages, that is, the battery cannot withstand the ultra-strong current.

Now that the current and voltage have reached their limits, we can only start with the battery.

Chen Xing silently remembered this, and then asked:”How about 200W Star Flash fast charging? Is the safety guaranteed?”

loadAdv(7,3);

He has always attached great importance to the safety of fast charging. For example, this time’s 120W Star Flash fast charging, the theoretical power of the laboratory has reached 140W. Because of heat and battery instability, Chen Xing took a stab at himself and released it instead. 120W star flash fast charge

“140W is completely ready for the market, but 200W still needs to be studied.”

Yang Bochao replied.

Chen Xing:”Have any changes been made?”

Faced with this question, Yang Bochao patiently answered:”Our Star Flash Quick Charge is not a dual-circuit charge pump design. I was wondering if we could add another circuit and charge pump. For three, a stronger current is input. After decompression by the charge pump, the three circuits are combined into one, and finally flow into the dual cells of the battery.”

“It turns out”

“We succeeded!”

“The design of three circuits and three charge pumps greatly increases the charging power. Without considering the battery’s endurance, the charging power can reach up to 300W or even higher. However, due to current battery technology, the current theoretical maximum is 200W. If it exceeds the limit, it may expand and explode. In addition, 200W flash charging has a small flaw.” defect?

Chen Xing was confused and asked:”What’s the defect?”

He didn’t dare to be careless about the battery. If there was a defect, it was best to reduce the charging power.

Yang Bochao smiled knowingly and said frankly:”It is a three-circuit, ultra-high current design. It will be a little hot when charging. Because the default input is 20V10A high current, the battery life may also be affected.”

20V10A is more than a large current. It’s not too much to say that the current is ultra-high!

According to the technical principle of Star Flash fast charging, no matter how much power is input, the final voltage flowing into the dual cells must be 5V or below. This is the safe voltage of lithium-ion batteries. Unless there is a breakthrough in battery technology, otherwise, it is best to Don’t exceed!

However, it can be deduced from the 5V voltage that in order to achieve 200W fast charging, the final current reaching the dual battery cells must be 20A. It is strange that such a large current input does not generate heat!

Considering that it is summer, the temperature is already high, and it is even higher in the south. If you use 200W fast charging technology rashly, once the battery temperature is too high, unexpected things may happen!

Apart from the existing safety hazards, it is not a problem that may affect the battery life. When the time comes, the original battery replacement service can be solved.

After much hesitation, Chen Xing still considered safety issues and said:”The idea of three circuits and three charge pumps is very good, but the actual application will be delayed because the internal layout of the mobile phone needs to be redesigned. Your fast charging team will continue to work hard and I will continue to arrange it in the future. Bring in manpower, especially those in the battery field”

“good president”

Yang Bochao also knew not to act too hastily.

120W Star Flash fast charging is already very fast. There is no need to rush to 200W. After all, if it really explodes and damages the trust of users, it will be worth the loss.

But what is certain is that as long as battery technology is upgraded, 200W Star Flash fast charging will naturally be available, and then we will truly enter the era of counting seconds.

“President, I have something to report!”

While Chen Xing and Yang Bochao were chatting about fast charging, a girl with a ponytail wearing a white coat and holding information quickly walked in.

Chen Xing had no impression of her, and she was probably not from the fast charging team.

“View information”

【Name]: Fang Xiao

【Type]: Scientific research talents

【Qualification]: Blue

【Personality]: Social fear (focus on the spiritual world, have more wonderful ideas)

【Main direction]: mobile phone design

【Loyalty]: 94

【Monthly salary]: 5,000 (an appropriate increase in salary can motivate talents)

【Special entries]: None

“It turned out to be from the design team, no wonder I didn’t have much of an impression.”

Chen Xing thought to himself.

The places where he comes most often are the chip laboratory and the fast charging laboratory, because the patented technology breakthroughs of these two teams are very rapid.

One helped Chen Xing develop the Kaitian 4G baseband chip, and the other helped Chen Xing develop the 120W Star Flash fast charge.

Other teams, such as the design team and the internal screen material team, had a small number of people and no progress, so he rarely visited them.

Seeing someone coming to the door, Chen Xing also asked patiently:”What’s the report? Does the design team have any good ideas?”

Fang Xiao took out the information in his arms, handed it to Chen Xing and said,”Yes, our design team thinks that mobile phones The field must be refined. Game phones, business phones, and camera phones all require different designs, including size, thickness, and screen bangs. This is a draft design drawn by our team. Please take a look.”

(End of this chapter)