"Mr. Jin, you're here, haha, you've been back for so many days, and you won't come to me to have a look, if I don't call you, won't you even remember our laboratory?"

Seeing Jin Xiaoqiang walking into the experimental building, Bin Xinwei, who had been looking forward to it for a long time, immediately greeted him and joked with Jin Xiaoqiang with a smile.

"I'm so busy this time, I'm really embarrassed, in fact, I've wanted to come and see it for a long time."

Jin Xiaoqiang explained that in fact, since he went abroad, he has been paying attention to the progress of this battery research institute, and has to hold a video conference with Binxin Micro every day on average to understand the research and development of their latest lithium batteries.

And also according to their understanding of the future generations of lithium batteries, to give them some suggestions and guidance, after returning to China because of a lot of trivial matters, has not been able to come to the laboratory to see, he is really a little embarrassed.

"Haha, nothing, nothing, I know that Mr. Jin is a noble person, and I called you over this time, I also want to give you a face-to-face introduction to our lithium battery research and development."

Binxin said to Jin Xiaoqiang with a smile, it can be seen from his expression that he has been doing very well recently, and it must be that he has definitely made a breakthrough in the lithium battery research project that he has been following.

"What? Has our lithium battery research progressed? ”

Jin Xiaoqiang didn't play tricks, and asked directly, this is actually the question he is most concerned about.

"Haha, yes, Mr. Jin, the lithium iron phosphate battery you explained before, we finally got it. And by the way, even the management system of this lithium iron phosphate battery, we have also come up with it. ”

Bin Xinwei said to Jin Xiaoqiang with a proud face.

"Really? This is really good, Engineer Bin, you have helped our company solve a big problem. Haha, don't worry, at the celebration at the end of this year. I will definitely give you a celebration, and when the time comes, no one in your battery research institute will have a big red envelope. ”

As soon as he heard the news, Jin Xiaoqiang almost jumped up happily, and at this time he was a little happy to dance with his hands.

"Haha, that's okay, let's go, Mr. Jin, I'll take you to see. Our samples. ”

Bin Xinwei is a scientific research background, and his personality is also straightforward, so he took Jin Xiaoqiang to see the samples of their lithium iron phosphate batteries.

followed Bin Xinwei through a few corridors, went up to the second floor, and then put on some protective clothing, so that they entered a laboratory, and the laboratory was also treated with high-standard dust-free sterilization. Through the glass of the laboratory, Jin Xiaoqiang saw the lithium iron phosphate battery that was being tested on the bench in the laboratory.

In fact, when it comes to lithium batteries, the concept of this thing has actually been born for a long time, almost more than 100 years. As early as the 19th century, many scientists discovered that lithium-ion is actually a very suitable material for batteries.

But this lithium ion is too active, let alone a battery, just exposed to the air and oxygen combined, he will burn and explode, so because of the instability of lithium ions, coupled with the limitations of technical conditions at that time, people's research on this element has slowed down.

Later, in the seventies of the last century, because of the oil crisis, people turned out the theory of lithium batteries, and carried out continuous research, and so on in the nineties, the Japanese made certain achievements in the field of lithium batteries, small pieces of lithium batteries were manufactured, and then continued to be used in digital cameras, laptops, mobile phones, but still not large-scale promotion, one is because the cost is too high, and the other is because of his stability. …,

In recent years, major commercial companies around the world have increased their investment in lithium battery research and development, and our main research direction is to find a more suitable carrier of lithium battery positive and negative electrodes.

DURING THIS PERIOD, MANY KINDS OF LITHIUM BATTERIES WERE BORN, SUCH AS LITHIUM MANGANESE OXIDE BATTERIES, LITHIUM COBALT OXIDE BATTERIES, ETC., BUT THE PERFORMANCE WAS NOT SATISFACTORY, AND THE MATERIAL SUPPLIERS IN THE ANODE HAVE NOT BEEN ABLE TO MAKE ANY BREAKTHROUGHS, SO THE RESEARCH AND DEVELOPMENT OF LITHIUM BATTERIES HAS ALSO BEEN IN A STATE OF STAGNATION, UNTIL NOT LONG AGO BLACK&DECKER LAUNCHED THE LATEST ELECTRICAL TOOLKIT, MANY OF WHICH USE LITHIUM BATTERIES AS POWER ENERGY, AND THEIR NEW LITHIUM IRON PHOSPHATE BATTERIES CAN BE REGARDED AS POINTING OUT A NEW DIRECTION FOR THE RESEARCH OF LITHIUM BATTERIES.

On the side of Huayang Power, almost last year, Jin Xiaoqiang pointed out the research and development direction of lithium iron phosphate as the cathode of lithium batteries to Binxinwei, so that after more than a year of experiments, Binxinwei finally came up with the most suitable and suitable for the latest model of lithium battery for hybrid vehicles.

"Mr. Jin, when you told me last year that lithium iron phosphate was used as the cathode material of the battery, I didn't believe it very much, because before that, the direction of our domestic research on lithium batteries was to keep up with the world, and we were generally studying the use of lithium manganese oxide as the cathode material of lithium batteries. Later, I used two materials as the cathode materials of the battery, and after making a comparison, I realized that you are right. COMPARED WITH LITHIUM MANGANESE OXIDE, THE ENERGY CAPACITY DENSITY OF LITHIUM MANGANESE OXIDE IS 100-115MAH/G, AND LITHIUM IRON PHOSPHATE IS 130-140MAH/G, IN TERMS OF CHARGING TIMES, LITHIUM MANGANESE OXIDE BATTERIES ARE MORE THAN 500 TIMES, AND LITHIUM IRON PHOSPHATE BATTERIES ARE MORE THAN 1500 TIMES, THE GAP IN WORKING TEMPERATURE IS EVEN LARGER, THE WORKING TEMPERATURE OF LITHIUM MANGANESE OXIDE BATTERIES IS 0 TO 50 °, AND THE LATTER IS -40 TO 70 °, FROM THESE MAIN INDICATORS, THIS LITHIUM IRON PHOSPHATE BATTERY CAN BE SAID TO BE BETTER THAN LITHIUM MANGANESE OXIDE BATTERIES, And in the current world, it seems that this lithium iron phosphate is the most suitable material for the cathode of lithium batteries. ”

Bin Xinwei looked at the lithium battery pack that was doing a discharge test on the bench in the laboratory, and then said to Jin Xiaoqiang, Jin Xiaoqiang nodded frequently when he heard it, nonsense, otherwise Lao Tzu will recommend lithium iron phosphate as the battery cathode?

These materials have been developed by major companies in later generations.

"You told me a few days ago that you want to test this lithium battery on a large bus to see how heavy and effective it is, and Li Qiming and I also found a few buses to do a simple experiment. In these buses, we used this new lithium-ion battery car, and compared it with the nickel-metal hydride battery that the Japanese currently use on the Prius. If the nickel-metal hydride battery is installed on the bus to make a hybrid car, the cruising distance of this car is short, and because the nickel-metal hydride battery pack itself weighs more than 600 kilograms, this time it consumes a considerable amount of fuel energy. The total weight of our lithium battery pack is less than 200 kg, not even one-third of the nickel-metal hydride battery, and the battery energy density is large, the discharge time is long, so that the bus even in the case of full load The endurance is also long, in the speed range of 0-40 kilometers per hour, just relying on our lithium battery pack can walk up to the longest distance of 60 kilometers, and then enter the hybrid mode, you can charge the battery pack......"

Bin Xinwei began to talk about his latest research out of this lithium iron phosphate battery began to gush, this set of lithium battery technology, can be said to be the pride of his life, and finally our Celestial Empire researchers, in some technical fields can go to the forefront of foreign scientists.

You know, until then, we had been following the foreigners' butts, and now it's finally their turn to follow our butts. …,

Jin Xiaoqiang listened to Bin Xinwei's introduction, and was also very happy, when he was in the capital to talk with the Du family and Liu Yonghao, both parties had hinted at him, hoping that he could make a breakthrough in the bus or large public transportation as soon as possible, and then give us a long face in the Beijing Olympics.

At that time, of course, Jin Xiaoqiang promised that there was no problem, but in fact, his heart had been hanging and not put down, because he had been letting Binxinwei develop lithium batteries before, but the lithium batteries he asked Binxinwei to research were all used in small cars, and they were really not applied to large-scale public transportation systems.

I didn't expect Bin Xinwei to really live up to its mission, and so quickly got this large lithium battery pack out, okay, fortunately, this time I finally gave an explanation to the uncle of the Du family and Uncle Liu.

If I remember correctly, in the 2008 Beijing World Games, Beijing's bus system also purchased a large number of energy buses, but those buses used hybrid systems provided by Foton, and their battery packs used lithium manganese oxide batteries.

Compared with nickel-metal hydride batteries, this kind of battery has certain advantages, but compared with lithium iron phosphate batteries, it can only be said to be slag, it cannot work at low temperatures, and the service life is short, which are all problems.

The most important thing is this kind of battery, which is not suitable for strong hybrid systems, and is quite lacking in external plug-in charging, which directly pronounces the death sentence of this battery on the road of lithium batteries in the future.

Now I have a better alternative in my hands, and I believe that in the near future, in the public transportation system of the capital, there will be more large hybrid vehicles with the Huayang power logo.

However, it should not be taken lightly, when making this kind of battery, it must be foolproof in terms of sealing, otherwise the fire and explosion of this lithium battery is not a joke......

Thinking about the electric taxi of BYD in the later generations that was hit and then exploded and caught fire, Jin Xiaoqiang suddenly felt shuddered, such a thing is absolutely not allowed to happen to Huayang Power...... (To be continued)