"In addition, in the "Hurricane" game operated by our group's Xingchen Games, all players have given away three new cars for free in their garages, which are the latest three models of our Xingchen Automobile, and you can fully experience the performance of these three cars, and various in-car equipment, drive them to the track, or experience the convenience of automatic driving."

"The above is the introduction of the new models of Xingchen Automobile, and the following is the question session, you can raise your hand to ask any questions."

After the words fell, the reporters sitting in the audience raised their hands in unison, and the expressions on their faces were very anxious, the information provided by this press conference was a bit explosive, the three new cars were secondary, and the technologies mentioned were the focus of the reporters. Whether it is graphene batteries or autonomous driving, it is a hot spot in the scientific community's research and development, and many world-renowned companies and laboratories are doing their best to publicize these two projects.

"Please ask this gentleman in red in the front row to ask a question, okay, it's you, you ask your question."

Zhang, who was sitting in the front row, stood up with a confused face, took the microphone, opened his mouth, and didn't know what to ask. He turned his eyes for help to Han Yuan, who was sitting next to him, and asked in a loud voice, "Brother Han, what should I ask?" ”

After taking it, Zhang forgot to turn off the microphone, and the sound he thought he thought was played out word for word by the sound system. The reporters at the scene burst into laughter, and Han Yuan covered his face with his hands and moved to the side, looking like he didn't know you.

Jiao Baiwan smiled and said, "That's your colleague next to you, it's okay to give him the microphone." ”

Hearing this, Zhang, who was extremely embarrassed, stuffed the microphone into Han Yuan's arms, as if it was a bag of explosives that had been ignited. As an old reporter, Han Yuan is well-informed, knowing that this is Jiao Bai recognizing himself and deliberately giving himself the opportunity to ask questions, he picked up the microphone and asked calmly: "Mr. Jiao, I am a reporter from the Autohome website, when you just introduced the new car, you mentioned the graphene battery several times, can you be the specific situation of this new graphene battery?" ”

Jiao Bai: "Of course, graphene batteries are not a new thing, they are based on lithium polymer batteries, and graphene is added to improve energy density and increase battery stability. As early as three years ago, a number of laboratories trial-produced graphene batteries, but their technology is not mature, and there are shortcomings such as high cost, poor consistency, poor stability, etc., and cannot be mass-produced and put on the market. The research team of our Xingchen Research Institute, after arduous public relations, completely solved the problem of mass production, and the graphene battery produced by us has achieved all-round improvement compared with ordinary lithium polymer batteries in terms of charging efficiency, battery capacity, energy density, cycle life, etc. Our mass-produced graphene batteries have achieved an energy density of 874mAhg, with a cycle life of more than two times, and laboratory products can be even higher. ”

"Next, the lady in the red hat."

"Hello Mr. Jiao, I am a reporter from Phoenix.com, can your graphene battery be used in mobile phones, and the wireless charging technology with a distance of 15 meters, can it be used in electronic devices such as mobile phones and tablets?"

Jiao Bai: "You have two questions, okay, it's my fault, I didn't stipulate that one person can only ask one question, let's not take it as an example." The first problem is that graphene batteries can be used in mobile phones, and its energy density is more than five times that of ordinary ternary polymer batteries. As for wireless charging technology, mobile phones and tablets are not needed for the time being. When we first developed this technology, we were going to electric vehicles, the voltage is too high, the power is too large, and the volume of the device is too large compared to the mobile phone and tablet, and it is difficult to scale into the mobile phone in a short time. ”

"Next, the yellow-haired foreign girl, okay, it's just you, what's wrong with you."

The blonde female reporter stood up, took the microphone, spoke very authentic Chinese, and said: "Mr. Jiao, correct your wrong view, not all people with blond hair are foreigners, such as me, I am a native of China, but I am of Russian ethnicity." ”

Jiao Bai touched his nose in embarrassment, then arched his hand towards the eldest sister and said, "I'm really sorry, it's my preconceived idea, your problem." ”

"Mr. Jiao, you mentioned earlier that the autonomous driving technology you developed is Level 5 autonomous driving, how is the autonomous driving classified?"

Jiao Bai: "In fact, the information related to autonomous driving can be searched on the Internet, and I can also do it here, and the automatic driving level formulated by the International Society of Automotive Engineers is divided into six levels, namely L0 manual driving, L1 assisted driving, L2 semi-automatic driving, L3 highly automated driving, L4 ultra-high automatic driving, and L5 full automatic driving. At present, the semi-autonomous driving that our Xingchen Automobile starts in the case of running at high speed is out of the L2 level. Most of the autonomous driving tested by Google, Baidu and other companies is at the L3 level. If our autonomous driving function is fully opened, it can reach the L5 level, and at this level, driving does not require human intervention at all, and the driving safety is much higher than that of manual driving. ”

"The last one, the guy over there."

"Mr. Jiao, as far as I know, the price of a lowest-end lidar for automatic driving is at least more than 20,000, and an automatic driving system needs at least four lidars, and the cost is as high as 100,000.

Jiao Bai: "Indeed, the price of lidar sold on the market is very high, and to achieve L5 level autonomous driving, at least 64 lines or more of lidar is used, and such radar is even more expensive." However, the automatic driving system used by our Xingchen Automobile does not use lidar, but replaces lidar with three information collection devices of camera, photoelectric radar, and millimeter wave radar, which works similarly to human driving, and perceives surrounding information through both eyes and ears to control the car. Theoretically, our system is much safer than human driving, and the response speed in extreme situations is much faster than that of humans. If it encounters special gases such as fog, rain, snow, and haze, the automatic driving will not be affected, which can greatly improve driving safety. ”：，，，