Yu Xiaolei watched the video in front of him five or six times.

As a department chief in a ministry, he is the person who knows the most about the development trends of international and domestic heavy trucks.

He opened a file on his computer, which was a report submitted by the China Automotive Technology Research Center.

The report said: "International heavy-duty vehicles are generally in a saturated state, and their production capacity is in a saturated state, with more than 90% used for the renewal of old vehicles.

Huaxia is becoming the only and most dazzling bright spot in the global heavy vehicle industry."

The report estimates: "In 1999, domestic mid-size car sales are expected to reach 50,000 units, an increase of 30% over the previous year.

With the rapid development of domestic highway construction and the rapid increase in highway mileage, there will be huge space in the domestic heavy-duty vehicle market."

The report also made a comparative analysis. Sam's population is one-sixth that of China, but the sales volume of heavy trucks last year was 60,000, and China's market should be more than six times that. The report predicts that by 2005, China's heavy truck demand will

Reached 350,000 vehicles.

Yu Xiaolei opened the video again and fast-forwarded to the motor part.

The following commentary emphasizes that the battery, motor, and electronic control used in this car are all Donghua's own technology.

This is awesome. You must know that more than a dozen domestic heavy-duty truck companies still use the doctrine. The original FAW 16-ton heavy truck uses a Deutz engine, and the Dongfeng heavy truck uses a Cummins engine. The transmission in the assembly

, the steering gear, cab, single bridge, and double bridge are almost all made of foreign technology.

Yu Xiaolei also knows that the technologies introduced in China are only at the level of foreign countries in the 1970s and 1980s. The new technologies and materials in recent years, especially the application of electronic technology, have not yet been opened to domestic car companies.

The step taken by Donghua now is expected to break the blockade of foreign technology.

No!

Donghua's innovation may push domestic car companies to embark on another path.

Tonight, Yu Xiaolei was invited to gather with Donghua Heavy Industry Chairman Chen Lichun, Donghua Heavy Truck Business Manager Mary, FAW Business Manager Liu Changchun, and the heads of relevant departments of Zhao Province and Lan City.

Tomorrow, the Equipment Department will listen to a report on the relevant situation, and Yu Xiaolei is full of expectations for the follow-up development.

...

The report meeting was held as scheduled and was as successful as expected.

After watching the video and listening to the report, Donghua’s annual production of 5,000 electric heavy truck modified vehicles project was fully recognized by the leaders attending the meeting.

Project approval will be specifically handled by Lanshi, and qualification processing will be promoted by Xiaolei.

Next, Donghua Heavy Industry's heavy truck modification workshop will speed up the construction and strive to reach production before the end of the year. FAW will cooperate with Donghua's actions to further expand capacity and production. Both parties will work together to promote the launch of electric heavy trucks.

As for Donghua's proposal to set up swapping power stations at important transportation nodes such as expressway service areas, there was no discussion at the meeting due to the wide scope of involvement. The leaders attending the meeting instructed Yu Xiaolei to submit a more detailed report and then convene other

The responsible comrades of the ministries and commissions discussed together.

Not long after Chen Lichun returned to Lanshi, he received a notice to go to Yanjing again to attend a meeting of a certain department.

Two days later, Chen Lichun came back in a hurry and told everyone excitedly during dinner: "Hey, we got a big order to modify 300 electric trucks for the army. Donghua is going to show up."

Chen Lidong asked: "So many? Our technology is fine, right? There won't be any problems if it is used by the troops."

Li Taishun said: "Don't worry, there will definitely be no problem with the motor and electronic control."

Chen Lidong asked again: "Whose chassis is it? Or FAW's?"

"The chassis of Shaanxi Automobile." Chen Lichun continued to say happily: "There is a military parade, and these vehicles will pull equipment around the square."

Chen Lidong was shocked: "Did you accept this task?"

"Took it."

"Brother, you are really courageous." Chen Lidong flicked his chopsticks and said, "It's already April, and there are still 5 months to go. Besides, the National Day rehearsal is probably already underway, so how can I have time for you to modify the tram?"

"The tram will be on standby and will be replaced if it works. They are using diesel vehicles for practice now. We will deliver the tram in July. The time is indeed tight, but Shaanxi Automobile also came and we will work on it together."

Mary asked: "Have we become a military-industrial complex?"

In Sam, it is not easy to be included in the military industry directory.

Chen Lidong covered his forehead: "If a mouse licks the cat's nose, it will die quickly, so just do it."

Li Taishun threw his chopsticks and said, "Boy, who are you looking down on? Ever since you came back from the south last year, you have been acting strangely. Seven of you are dissatisfied and eight of you are dissatisfied.

They also force us to go to the workshop to exercise for a week every month.

We really went, your brother and I went to the workshop every day, did you go?

Have you seen our processing capabilities and levels?

The task of modifying 300 units, no matter what, I can finish it in a month."

"Ouch...Okay! I underestimated you and wronged you. Then concentrate on making the car a good job. Don't make sure anything goes wrong. If the power goes out, you will make a fool of yourself."

Chen Lichun glanced at his younger brother: "What are you talking about?! Don't curse people, please! Stop saying those depressing words. Also, is your battery okay?"

"The battery... is fine. What could go wrong? It will be ready in 10 days." Chen Lidong said nothing.

At present, what Chen Lidong is telling everyone is that Donghua super power batteries are produced in Xiongdao.

In fact, Bear Island did build a battery processing plant, but it was just a show.

Until now, super batteries can only be redeemed from the system.

Work is also being done to crack the super battery, but without the participation of professionals, the progress is very unsatisfactory.

When it comes to electric vehicles, batteries are the key.

The super battery exchanged from the system is not suitable for use in cars due to its size. So Chen Lidong wanted to crack the super battery and make a mini version for use in family cars and electric bicycles.

Last year, Kong Yilin, whom he had been following for a long time, put into production an electric bicycle factory in Suzhou, and the Meru brand electric bicycles it produced were selling like hotcakes.

In Chen Lidong’s opinion, this kind of Meru electric bicycle is really bad.

Electric bicycles were invented 100 years ago.

Ten years after the bicycle was finalized, Sam engineer Ogden Bolton creatively invented the direct-drive hub electric bicycle, and he became the first person to obtain a patent for a battery-powered bicycle.

Before that, he also invented the electric tricycle, which installed a set of batteries on three wheels. The invention of the electric tricycle made him huge profits.

The next electric bicycle he invented was a 10-volt/100-amp, single-speed electric bicycle with a DC hub motor. The bulky battery was installed under the bicycle cross member and drove the motor installed on the rear wheel to drive the bicycle.

Over the next 100 years, countless bicycle enthusiasts began to modify bicycles, and various styles emerged in endlessly. However, it was not until 1992 that electric bicycles were commercialized.

The first one to be launched is Zike's nickel-cadmium battery bicycle. This bicycle is very beautifully designed. The simple frame is made of high-strength aluminum alloy. The two tires with a diameter of 30 cm will still look very cute 30 years later. The motor

Mounted on the central axis, the battery weighs less than one kilogram.

In 1993, Yamaha also introduced one of their bicycles to the market, and since then the electric bicycle market has boomed.

Chen Lidong arranged for people to collect and compile relevant data on well-known foreign electric bicycles. Currently, the batteries used by everyone are nickel-chromium batteries, with a cruising range of 20 to 30 kilometers.

These foreign electric bicycles have one characteristic: they are expensive.

The price of a car is 1,200 to 1,900 US dollars or Euro, which is equivalent to tens of thousands of yuan.

Nickel-cadmium batteries are chemical batteries that use nickel hydroxide as the positive electrode, tin as the negative active material, and potassium hydroxide solution as the electrolyte.

This kind of battery can be repeatedly charged and discharged 500 times, can be charged quickly, and can provide large current to the motor, but it has a major disadvantage, which is the memory effect.

The memory effect is that the nickel-cadmium battery will memorize the user's daily charging, discharging amplitude and mode. It will be difficult to change this mode over time. It can no longer be charged or discharged to a large extent. In every use, any incomplete discharge

will deepen this effect and make the battery capacity even lower.

To eliminate the trouble of this method, one way is to deeply discharge with a small current, preferably once a month, or insist on using up the electricity every time and fully charging it when charging.

Compared with lead-acid batteries commonly used in this era, nickel-cadmium batteries have similar energy density and volume density, and their discharge performance is better than lead-acid batteries.

Meru electric bicycles currently use lead-acid batteries.

Lead-acid batteries have a short life, with only 180 charge and discharge times, while nickel-cadmium batteries generally have more than 500 times.

Both batteries are not environmentally friendly. Lead and cadmium, two heavy metals, are harmful to the human body and the environment.

During the use of lead-acid batteries, acid corrosion of connecting parts and wires is prone to occur, and they need to be wiped regularly, making maintenance more cumbersome.

Nickel-cadmium batteries also have this problem. The alkali solution will corrode the parts during operation. Distilled water must be added and the electrolyte must be replaced regularly. The maintenance process is quite cumbersome.

Maintenance and replacement of batteries are the biggest problems currently faced by electric bicycles.

Manufacturers must promise to maintain the batteries in order to gain a larger market.

Larger electric bicycle stores must have at least one technical employee responsible for this aspect of work.

Of course the reborn Chen Lidong is aware of these problems. In another life, his family bought several electric bicycles. The first one used a lead-acid battery. It cost more than 3,000 yuan at the time. The price was not friendly and charging was troublesome. After less than a year of use, the battery ran out of power.

If the battery is too powerful, it needs to be replaced.

Until later, lithium batteries were used.

The volume energy density of lithium batteries is 2.5 times that of lead-acid batteries, and the mass energy density is 3.5 times. The number of charges and discharges can reach 2,000 times. It is not harmful to the human body and is relatively friendly to the environment. In particular, the battery is sealed and easy to maintain.

Of course, lithium batteries also have some fatal problems, such as poor low-temperature performance. The most terrifying thing is that they generate huge amounts of heat when overcharged, are prone to bulging, and even catch fire or explode.

Kong Yilin, the boss of Meilu, does have a good idea. His electric bicycle uses a self-made motor. He invested in a NdFeB sintering and motor factory in Gan Province. Although rare earths in Gan Province are now controlled, his raw materials can still be used.

It is obtained from Sanhuan Hi-Tech, so its motor performance is relatively superior in the same industry.

Other accessories for Meru electric bicycles are provided by Shanghai Bicycle Factory No. 4. Shanghai Bicycle is a well-known brand in the country and ranks first in the bicycle market share.
To be continued...