Expensive......

Chen Geng didn't expect Wang Ke to give him such an answer. Pen ~ fun ~ pavilion www.biquge.info

However, as a common product of the two companies, GE and RCA now look at IGBT more precious than their own eyeballs, and with our country's technical level in semiconductors, there is no way to "learn" it for the time being.

"I roughly calculated, if all the rectifier parts are replaced with IGBTs, the cost will exceed 20,000 US dollars," Speaking of this figure, Wang Ke looked bitter: "We are a civilian car, if it is just a test car, but if the cost of the future production car is so much higher......"

"Tsk......"

Not only Chen Geng, but several executives of Runhua Industry all had a toothache when they heard this number: Zhennima is expensive!

It's not just a matter of $20,000 more in the cost of a car, but the country's control over foreign exchange has reached a perverted level in recent years, and the amount of foreign exchange is not easy to apply.

"I don't know much about technology," Liao Qian, who hadn't spoken much, spoke, and she asked suspiciously: "But the first car that our company wants to produce, can't it have so many wheels?" Don't have so many wheels and need to use such a high cost? ”

Wang Ke really wants to give himself a slap in the face!

Heavy-duty commercial vehicle chassis technology has always been the shortcoming of Runhua Industry, and it is precisely because of this that Chen Geng wants to find a new way: since we are not good at the transmission reliability of pure mechanical nature for the time being, then simply let go of the mechanical transmission for the time being, and directly drive it with electricity, which is also the reason why Chen Geng insisted on introducing relevant technologies from Belarus.

Under the leadership of Chen Geng, the technical nerd, the whole company has a strong tendency to be a technical nerd, the tendency of the technical nerd is good and bad, the good thing is that the whole Runhua industry from top to bottom attaches great importance to technology and respects the technical personnel, it can be said that the technical personnel of Runhua Industry have the highest right to speak among all enterprises in China, and it is precisely because of the high voice of technical personnel, many times even without Runhua Industry to dig people, the talents of major enterprises and research institutes will take the initiative to contact Runhua Industry;

Of course, there are also bad points, that is, the unique "tendon" of technicians, when encountering problems, the first reaction of tech nerds is not "can I avoid it to save costs?" Instead, "it!" This is kind of interesting, wahahaha...... Lao Tzu can show his skills again! ”

The situation in front of her is like this, Liao Qian's words hit the nail on the head, pointing out a problem that Wang Ke and others had ignored before: if it is this Maz 7907, of course it will cost so high.

In fact, Chen Geng really did not plan to develop a 24 * 24 heavy-duty commercial vehicle chassis, his idea is to develop three series of commercial vehicles with different load indicators on the basis of the same platform, 4-axle, 5-axle and 6-axle.

Wang Ke looked ashamed.

Chen Geng also had a wry smile on his face, he didn't expect that he would make a seemingly inconspicuous mistake here, but in fact it made people extremely speechless.

"Don't think about it," Old Man Xie patted Chen Geng's shoulder: "It's not your fault, as the chairman, you can't pay attention to these details......"

"It's not this that I'm depressed," Chen Geng smiled bitterly: "I'm thinking about another thing." ”

"What's the matter?" Old Man Xie asked casually.

"I just heard Wang Ke say that the insulated gate double-click transistor that we need to use in a car costs almost 20,000 US dollars, so how many IGBTs does our country need to import from the United States every year?"

"This ...... It shouldn't take much, right? Old Man Xie really doesn't know much about this kind of thing: "It's estimated that it's only tens of millions of dollars?" It's only a few hundred million, right? ”

"That's the problem," Chen Geng said, "We still use a lot of gate switch-off thyristors (GTO) and high-power transistors (GTR) in China

Whether it is tens of millions or hundreds of millions of dollars, this conversion will require hundreds of millions or even billions or billions of RMB, if we can develop a thing to replace IGBT, this market is not ours? ”

"I ......" Old Man Xie said with a smile and a smile, "I don't even know what to say...... You're just frowning about this? ”

"Of course, what do you think?"

"This is equivalent to saying it in vain," said Mr. Xie, "if we have a technology that is more powerful than IGBT...... No, not to mention that it is more powerful than IGBT, even if it is slightly worse than IGBT, but as long as it can replace IGBT, and we can produce it ourselves in China, you look at it, hum ......"

Although Mr. Xie is not very clear about the technical aspects, but he knows a little, as long as it is a place that needs rectification and clipping, you need to use IGBT, of course, if you insist on using GTO or GTR, it is not impossible, but performance, volume, efficiency, power consumption and IGBT are far from the same, there is a technical generation gap between the two. The technical gap between GTR and IGBT is like the technical gap between the Jichai 12V190B diesel engine and the original GTD-1250 gas turbine on this Maz 7907: in the case of almost the same maximum power, the weight of the Jichai 12V190B diesel engine is 5300 kg, and the weight of the GTD-1250 gas turbine is only more than 500 kg including accessories!

The difference in weight is almost 10 times!

As for the difference in volume, that's not to mention.

If Runhua Industry can come up with something that can replace IGBT, even if it is similar to IGBT in terms of performance, volume and efficiency, it will be a big business that scares people to death! But the question is, is this kind of thing what you want to do?

Faced with Old Man Xie's suspicion, Chen Geng smiled and didn't speak, he already had an answer in his heart: IGCT, integrated gate commutator thyristor.

Compared to IGBT, IGCT is a tragic hero!

As you can see from the name, GTO: gate can turn off thyristor, IGCT: integrated gate commutation thyristor, both are based on thyristor technology, both are fully controlled power electronic devices, which means that users can upgrade from GTO to IGCT more conveniently.

IGCT was once pinned on high hopes by Europe, hoping to break the monopoly of IGBT on the market, but helplessly, the timing of IGCT was too late, compared to the IGBT that was officially launched in 1983, serialized in 1986, and completed the second generation of product development in the early 90s, IGCT was born in 1996 from the automation and robotics giant ABB. IGBT has basically completed the monopoly of the fully controlled power electronics market!

But now it is different, for the republic, which regards every penny of foreign exchange as more precious than an eyeball, if it can replace IGBT with a product that is almost the same in performance, efficiency, and volume and can be mass-produced, it means that a large amount of precious foreign exchange has been saved, and from top to bottom, no one will refuse.

As a salvo designer, the concept of integration has been deeply engraved in Chen Geng's bones, and his instinct is to use the existing technology, products and technologies on the market for his own use, but if it involves money and a lot of money, it is another thing.

………………………………

IGCT things are not in a hurry for the time being, but some people are anxious and their heads are smoking, seeing that Chen Geng has been back for half a month, he has not come to find himself, he has been nervous, waiting for Chen Geng to take the initiative to come to his own Bank of China Haizhou Branch President Shen Daqing, this time finally couldn't hold back, took the initiative to find the door, came up and apologized first: "Brother, I'm sorry, I'm really embarrassed, I just came back from studying outside, you said that you didn't give you a wind when you came back, this is really ...... Don't say anything, my brother will pick you up in Deyue Tower tonight. ”

You Shen Daqing really can't hold back.

As for why Shen Daqing came to the door to pick up the wind for himself, Chen Geng's heart was like a mirror, the wind or something was completely an excuse, not for the loan?

However, it was clear in his heart, Chen Geng's face was full of happiness and joy to see his old friend, as if he was completely unaware of Shen Daqing's purpose, and said with a smile: "Forget about the wind, it's still my brother, it's not my fault, I haven't sat down with the big guy for so long, but brother, you can understand, I'm about to get married, I'm busy with this matter." ”

Will you make excuses? I wouldn't.

Shen Daqing was a little embarrassed, of course he knew that Chen Geng's wedding date was in May, and it was indeed a few days away, this excuse can be called impeccable, but no matter how impeccable the excuse is, it is also an excuse, isn't it? In the final analysis, it is just one sentence: Chen Geng declined his invitation.

"Uh...... Marriage is a big deal, it should be," although I knew that this was Chen Geng's excuse, but since Chen Geng even took out this kind of excuse, Shen Daqing was really reluctant to do it, after a few words of greeting, Shen Daqing finally explained his intention: "Brother, the motor vehicle loan we talked about last time, brother, you also gave me a letter, what do you think?" ”

"You shouldn't ask me this, right?" Chen Geng was stunned for a moment, and said strangely: "Didn't you already know our conditions and requirements?" You haven't given me a reply for so long, and I thought you wouldn't approve it. ”

Shen Daqing almost sprayed a mouthful of old blood on Chen Geng's face, he wanted to scold his mother!

"Brother, that's not what you said, you haven't moved at all since the last fight, how can you let us give you an answer?" Shen Daqing said with tears and laughter.

Shaking his head, Chen Geng said: "Brother Shen, what you said is too sorry, let me tell you, I don't carry this pot, we told you the conditions early in the morning, you have not given us an answer, this board can still hit our ass?" This doesn't make sense anywhere. ”