reborn industrial empire

In fact, if we talk about that matter fundamentally, it is also the same

Regarding the design ideas of yd’s pure electric vehicle...

As far as the current technology is concerned, it is not unfeasible to produce a pure electric car, as long as you load the car with enough battery packs. After all, the more battery packs, the greater the energy storage and discharge.

The effect will be better.

So what happened to that model?

YD electric vehicles have 300-400 kg lithium batteries, while other hybrid vehicles generally have 100-200 kg lithium batteries.

This effect is of course different. The lithium battery of a hybrid vehicle discharges less because it has fewer batteries. Of course, the risk is also reduced. However, a pure electric vehicle loaded with more lithium battery packs will have a greater risk.

safety hazards.

After all, the current safety technology is not enough to avoid the problem of lithium battery electrolyte not coming into contact with the air in the event of an accident.

Of course, this problem was later solved by GM engineers, so for Jin Xiaoqiang now, this problem is not too serious. As long as strict quality control and safety monitoring are done, the dangers of this lithium battery can be eliminated.

Sex is kept to a minimum.

"Mr. Jin, you also know that the service life of lithium batteries is a difficult problem. For this reason, we have also specially developed a lithium battery work management system. After testing, if this system does not apply, then the service life of the lithium batteries will be

Generally, it is seven to eight years, but if this system is used and properly maintained, it will not be a problem for our lithium battery system to have a service life of more than twelve years."

Binxin WeChat told Jin Xiaoqiang about this set of batteries that he is proud of.

Work management system, and Jin Xiaoqiang also heard about this part of the technology that he wanted to know most.

After all, when Huayang Power's hybrid vehicles are launched on the market, whether they can start directly from the strong hybrid system depends on this battery work management system.

In fact, since the birth of hybrid cars, everyone has been paying attention to the charging problem of this car.

In the early days, Toyota's Prius used nickel-cadmium batteries. However, nickel-cadmium batteries were highly polluting, heavy, and had small charging capacity. They were quickly replaced by the nickel-metal hydride batteries on the second-generation Prius.

At this time, the pure electric range of the Prius has also increased from the original 20 kilometers to 30 to 40 kilometers.

But now the era of lithium batteries has arrived, and the Japanese have also begun to transform. They have developed hybrid vehicles using lithium batteries, but this time the Japanese have spent a lot of money on researching third-generation hybrid vehicles.

, not only developed a hybrid vehicle using lithium batteries, but also developed a mature plug-in charging system.

Everyone knows that driving a hybrid car saves fuel, but why do hybrid cars save fuel?

The key is to use the electric mode to start the car during the start-up phase, and in stop-and-go congested urban sections, because the speed is low and the electric drive mode is used, the internal combustion engine will not intervene in the car's power output at all.

Only when the speed needs to exceed 40 yards per hour, the internal combustion engine will intervene.

In this way, the key is how far the hybrid car's battery can allow the car to travel. Currently, Toyota's Prius claims that their second-generation Prius can last for 50 kilometers in pure electric drive mode. But after driving this

Anyone who drives a car knows that under ideal driving conditions, if the air conditioner is fully turned on or on a congested road, the car can travel twenty or more than thirty kilometers on battery power, which would be great.

Once the on-board battery is used up, the internal combustion engine must be used to intervene. At the same time, the car will recharge the battery pack based on the operation of the kinetic energy recovery system during braking.

As a result, the car's most important fuel-saving performance cannot be fully highlighted, and the battery pack's endurance has become the most criticized point of the Prius.

There is also the fact that the current Prius does not have the ability to be plugged in and charged externally. This means that when your car is parked outside and not working, you cannot charge the car battery pack externally, and the charging of the battery pack

It can only rely on the kinetic energy recovery mode after the car is started.

In this way, the working efficiency of the battery pack will be greatly reduced, and in many cases it will even be useless.

This is also the main reason why many consumers do not pay for such hybrid vehicles. Toyota has also noticed this and is studying ways to charge the car.

But now the emergence of lithium batteries has forced them to change their original research and development direction, because the external charging method they developed for cars was suitable for nickel-metal hydride batteries, but the trend of battery packs used in hybrid vehicles in the future is lithium batteries, so

they must

After understanding the latest lithium iron phosphate battery, we can figure out the external power charging system for this battery system.

This is also the main reason why it was not until five years later that the Japanese came up with the third generation Prius with an unconnected charging system.

The main problem here is that the charging mode of this lithium battery is not easy to figure out. It requires thousands of experiments to complete.

This problem is a big problem for the Japanese, but it is not a big problem for Jin Xiaoqiang. The memory of his previous life gives him an innate advantage in this regard.

So as early as when he told Binxin WeChat about the research direction of lithium batteries, Jin Xiaoqiang also told Binxin Wei about his charging theory, and made a rough and vague demarcation between charging and discharging voltages, so that

This greatly reduced the workload of subsequent experiments that Binxin, WeChat and others would need to do, saving both time and energy.

When using any battery, scientists will consider the problem of overcharging, which is the overcharging problem faced when charging the battery.

Therefore, they need to conduct thousands of experiments before they can finally determine what is the upper limit of the optimal charging voltage for this new battery so that it will not affect the quality and service life of the battery.

There is also the problem of over-discharge. Just like the over-charge problem, at what voltage does the battery need to be discharged? When the voltage is lower than what level, it no longer works with discharge. This is also a key issue.

In the previous life, the Japanese were stuck on these two values. It took them four or five years of hard work to find the best value. Then the plug-in system for strong hybridization was born.

Because when charging, if you do not control the voltage well, it will easily cause irreparable damage to the vehicle lithium battery pack. You must know that the cost of lithium batteries is not cheap.

Therefore, it will not be until 2010 that a real strong hybrid system and a hybrid vehicle with a plug-in external charging mode will be born. But now this kind of model is just a concept in the minds of designers of major automobile companies.

It's just an idea, and it's still far away from its true realization.

But now at the Battery Research Institute of Huayang Power, this problem has been overcome. Jin Xiaoqiang seems to have seen that next year, their first hybrid vehicle with a strong hybrid system will be born.

"After thousands of experiments, we finally found the warning line and high-voltage danger zone for lithium battery charging. In fact, the most suitable maximum voltage threshold for charging lithium batteries is 4.24 volts, so we set 4.2 volts

is the warning line. Once it exceeds this voltage, it is in a warning state. Once it breaks down

When the voltage reaches 4.3 volts, our external transformer will automatically cut off the power supply and terminate charging. Because once the voltage exceeds 4.3 volts, the lithium ions embedded in the graphite material of the negative electrode will become saturated, and the lithium ions in the electrolyte will

will crystallize into crystals, which will cause the cathode material to be less active

If the voltage drops, the battery capacity will decrease, which will greatly reduce the working efficiency of the battery. When discharging, the voltage should not be lower than 2.75 volts. Once it is lower than this voltage, a large number of lithium ion crystals will be formed inside the battery, which will cause damage to the battery.

Irreversible damage, so we installed a set of circuit control inside the car

control system to prevent overcharging or over-discharging. In this way, we can safely and boldly install an external charging system on the car, so that when the car is parked in the parking lot, or there is no need to work at home.

When the time comes, we can all charge our cars with confidence and without the need for anyone to watch over us.”

Binxinwei's explanation made Jin Xiaoqiang nod frequently. Indeed, the discovery of this system solved his big problem!

In a previous life, after the birth of lithium batteries, the Japanese actually planned to launch a second-generation and half-Prius model between the second-generation Prius and the third-generation Prius.

In fact, it is a Prius model that replaces the original nickel-metal hydride battery with a lithium battery, but this car still cannot be charged externally.

Later, after they did market research on this idea, they finally dropped it, and the car was not put on the market on a large scale, because the feedback they received from consumers was that consumers would prefer a plug-and-play car.

The reason for using hybrid cars is very simple: everyone wants their cars to be more fuel-efficient.

Think about it, you drive a hybrid car and use the battery as the driving force. After driving forty kilometers, all the battery power is used up. After that, you have to use the internal combustion engine as the driving force and charge the battery at the same time.

, but you need to drive hundreds of kilometers to fully charge the battery.

And the distance you travel to and from get off work every day is only so many kilometers, so you need to drive for many days to fully charge the battery. And every day when the car is parked in the parking lot of the work, or parked in the garage at home, as a How painful would it be to have a car with a battery that cannot be charged without plugging in?

After all this trouble, how much fuel is left in the car has become a question that many consumers are concerned about.

In this way, Prius has been holding back for several years before it solved the plug-and-charge problem of the car, and also used this to divide hybrid cars into theoretical divisions of light hybrid, medium hybrid and strong hybrid.

Only plug-and-charge hybrids can be classified as strong hybrids, while others can only be classified as light hybrids or medium hybrids.

The most critical difference between them lies in the small external connector, and the key vehicle battery management system that integrates line transformers, voltage regulators, and circuit breakers.

Later, BMW and Audi both launched a number of so-called hybrid models, but compared with Toyota's Prius, they can only be tragically classified as light hybrid or medium hybrid models. As for full hybrids, they have nothing to do with it.

.

Because they simply couldn't figure out the battery management system. This battery management system, which was inconspicuous and even unknown to people for a long time, was actually the key to hybrid vehicles.

Now this battery management system, with the full power of Jin Xiaoqiang’s Golden Finger and the day and night work of the team led by Binxin WeChat, was born five years earlier than in the previous life. This is destined to become the model of Toyota Prius.

The role of the gravedigger.

After all, for those consumers who are concerned about oil prices and their wallets, whose car is more fuel-efficient and whose product is king!

"The current world oil price has climbed to more than 80 US dollars per barrel. According to our statistical report, when the world oil price rises by 20 US dollars per barrel, the price of the gasoline we use will increase by 2 yuan per liter on average.

, coupled with a tax of 0.8 yuan per liter, that is to say, every 20 US dollars per barrel increase in world oil prices

Yuan, then the gasoline price shared equally among us people will increase by three Yuan. If you use a hybrid vehicle, then each vehicle can save about five thousand to six thousand Yuan per year compared to a fuel vehicle. If

After ten years of use, even including the cost of battery replacement, you can save about 80,000 yuan, so "

Binxinwei was still chatting, but at this time Jin Xiaoqiang was sneering. Binxinwei was still too optimistic, and his estimate was too conservative.

In China, the price of gasoline will only rise. How can there be any reason for it to fall? A few years later, even under the background of the world financial crisis, the price of gasoline in our country has remained high, staying at around eight yuan.

In the next few years, it is certain that the price will exceed ten yuan per liter. The price of oil will definitely only rise and not fall. This is why many car consumers in big cities are no longer in the rush to buy cars.

One of the main reasons why people choose to park their car at home and dare not drive it after getting excited...

Hehe, so when next year, after the world financial crisis breaks out, if Huayang Power launches a new generation of hybrid vehicles with this kind of strong hybrid system on the market in a timely manner, will we still have trouble selling this car?

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