In fact, that incident, if it is fundamentally said, is also related to the design idea of BYD's pure Shen bullet train. ―

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

As a result, 300-400 kg lithium batteries appeared on the byD electric car that had an accident, while other hybrid vehicles generally had 100-200 kg lithium batteries.

Of course, the effect is different, the lithium battery of the hybrid car has less discharge because of the less battery, and of course the danger is reduced, and the pure electric vehicle loaded with more lithium battery packs will have greater safety risks.

After all, in terms of current safety technology, it is not enough to do it, and in the event of an accident, the problem of lithium battery electrolyte not being in contact with air can be avoided.

Of course, this problem was later solved by general engineers, so for Jin Xiaoqiang now, this problem is not too serious, as long as the quality concept is strictly controlled, and safety monitoring is done, then the danger of this lithium battery can be minimized.

"Mr. Jin, you also know that the service life of the lithium battery is a problem, for which we have also developed a set of lithium battery work management system, after testing if this system is not applicable, then the working life of the lithium battery is generally seven to eight years, but the use of this system, if the maintenance is proper, then our lithium battery system service life of more than 12 years is not a problem."

Bin Xinwei told Jin Xiaoqiang about the battery work management system he was proud of, and Jin Xiaoqiang also heard the part of the technology he wanted to know the most.

After all, when their Huayang Power hybrid car was launched on the market, whether it could start directly from the strong hybrid system relied on this battery work management system.

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

At the earliest, Toyota's Prius had tried cadmium-spoke batteries, but the silver-spoke batteries were quickly replaced by the silver-hydrogen batteries on the second-generation Prius because of their serious pollution, large battery weight, and small charged capacity.

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 are also going to begin to transform and develop hybrid vehicles using lithium batteries, but this time when the Japanese are studying the third generation of hybrid vehicles, it can be said that they have invested enough, not only to develop hybrid vehicles using lithium batteries, but also to develop a mature plug-in charging system.

Everyone knows that driving a hybrid car is fuel-efficient, but why do hybrids save fuel?

It relies on the use of electric mode to start in the starting stage of the car, and in the congested urban road section of the stop-and-go road, because of the low speed, the electric drive mode is used, and the internal combustion engine will not intervene in the power output of the car at all.

Only when speeds of more than 40 yards per hour are required will the internal combustion engine step in.

At present, Toyota's Prius claims that their second-generation Prius can be in pure electric drive mode, which can last 50 kilometers, but those who have driven this car know that it is in a very ideal driving situation, if the air conditioning is fully on, or it is a crowded road, the car can go 20 kilometers or more than 30 kilometers by battery drive, it is good.

Once the on-board battery runs out, the internal combustion engine must be used to intervene and the battery pack will be charged according to the operation of the kinetic energy recovery system during braking. …,

In this way, the main fuel-saving performance of the car cannot be fully highlighted, and the battery pack has become the most problematic point of the Prius.

There is also the fact that the current Prius does not have the ability to plug in and charge externally, that is to say, when your car is parked outside and does not work, you cannot rely on the external way to charge the on-board battery pack, and the charging of the battery pack can only rely on the kinetic energy recovery mode after the car is driven.

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

This is the main reason why many consumers do not pay for this kind of hybrid, and Toyota has also noticed this, and they are studying ways to charge the car.

But now the emergence of lithium batteries, so they have to change the original research and development direction, because the original way they developed the car outside the charging method is suitable for silver hydrogen batteries, but the future hybrid car battery use trend is lithium batteries, so they must understand the latest lithium iron phosphate battery, before they can figure out the external power charging system with this battery system.

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

The main problem here is that the charging mode of this lithium pool is not so easy to figure out, and it takes thousands of experiments to complete.

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

Therefore, as early as when telling Binxin Micro the research direction of lithium battery, Jin Xiaoqiang also told Binxin Micro about his charging theory, and made a rough vague delineation between the charging and discharging voltages, which greatly reduced the workload of Binxin Micro and their subsequent experiments, which saved time and energy.

With any battery, scientists will consider the problem of overcharging, that is, the problem of overcharging when charging the battery.

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

There is also the problem of over-discharge, which is the same as the problem of over-charge, under what voltage the battery needs to discharge, when the voltage is lower than how much, it is not working with discharge, which is also a key issue.

In the last life, the Japanese were stuck on these two values, and they had been struggling for four or five years to find the best value, and then there would be the birth of a strong hybrid plug-in system.

Because when charging, if you don't grasp the voltage well, then it is easy to cause irreparable damage to the on-board lithium battery pack, and you must know that the cost of lithium batteries is not cheap.

Therefore, it is not until the old years of force that there will be a real strong hybrid system, and hybrid vehicles with plug-in and external charging modes are born, and now this kind of model, in the minds of designers of major automobile companies, is just a concept, and it is still far from the real realization.

But now in the battery research institute of Huayang Power, this problem has been overcome, and Jin Xiaoqiang seems to have seen that next year, their first hybrid car with a strong hybrid system has been born.

"After our thousands of experiments, we finally found the warning line and high-voltage danger zone of lithium battery charging, in fact, the most suitable maximum voltage critical value when charging lithium battery is 4.24, so we set 4.2 volts as the warning line, once this voltage is in a state of alert, once it hits Zhao volts, our external transformer will automatically cut off the power supply and terminate the charging. Because once the voltage exceeds the bow volts, the lithium ions embedded in the graphite material of the negative electrode will be saturated, and the lithium ions in the electrolyte will crystallize into crystals, which will lead to a decrease in the activity of the cathode material, a decrease in the capacity of the battery, and a great reduction in the efficiency of the battery. When discharging, the voltage should not be lower than 2 volts, once it is lower than this voltage, then a large number of lithium-ion crystals will be formed inside the battery, which will cause irreversible damage to the battery, so we have assembled a circuit control system inside the car to prevent the occurrence of overcharge or overdischarge, so that we can rest assured that we can boldly install a set of external charging system for the car, so that when the car is parked in the parking lot, or when there is no need to work at home, We can all charge our cars without having to be watched. ”…,

Bin Xinwei's explanation made Jin Xiaoqiang nod frequently, indeed the discovery of this system has solved his own big problem!

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

In fact, it is a Prius model that replaces the original silver hydrogen battery with a lithium battery, but this kind of car is still not capable of external charging.

Later, after they did market research, the idea fell away, and the car was not launched on a large scale, because the feedback they got from consumers was that consumers would prefer to get a plug-and-charge hybrid, for the simple reason that they wanted their cars to be more fuel-efficient.

Think about it, if you drive a hybrid car and drive 40 kilometers with the battery as the driving force, and you run out of battery, and then you have to use the internal combustion engine as the driving power all the time, and at the same time you have to charge the battery, but you need to drive hundreds of kilometers to fully charge the battery.

And every day you commute to and from work only so many kilometers in time, so you need to drive for many days to be able to fully charge the battery, and every day when the car is parked in the parking lot of the unit, or when you come home and park in the garage of your home, as a car with a battery, he can't charge it unplugged, what a great pain it will be?

After such a toss, how much fuel can be left in this car has become a concern for many consumers.

In this way, the Prius has been holding back for several years to solve the problem of plug and charge in this car, and also divide the hybrid car into mild hybrid, medium hybrid and strong hybrid theoretical divisions.

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

The most critical difference between them lies in the small plug-in connector, as well as the key line transformer, voltage regulator, and current breaker as one of the on-board battery management system.

Later, BMW and Audi both launched a number of so-called hybrid models, but compared with Toyota's Prius, they can only be tragically defined as mild hybrid or medium hybrid models, as for strong hybrids, they are not involved at all.

Because they simply can't figure out that battery management system, which is inconspicuous and not even well-known for a long time, is actually the key to hybrid vehicles.

Now this battery management system, under the full firepower of Jin Xiaoqiang's golden finger and the team led by Binxinwei working day and night, was born five years earlier than the previous life, which is destined to become the role of the gravedigger of the Toyota Prius.

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

"Now the world oil price has climbed to more than 80 US dollars a barrel, according to our statistical report, when the world oil price rises by 20 US dollars per barrel, then on average, the price of gasoline we use will rise by 2 yuan per liter, plus the tax of enough yuan per liter, that is to say, the world oil price per barrel price rises by 20 US dollars, then the price of gasoline used by our people will rise by 3 yuan, and the use of hybrid vehicles, Then each car can save about 5,000 to 6,000 yuan per year compared with fuel vehicles, and if it is used for ten years, even if you add the cost of replacing the battery, you can save about 80,000 yuan, so. ”。” ……

Bin Xinwei was still talking, but at this time Jin Xiaoqiang was sneering, this Bin Xinwei was still too optimistic, his estimate was too conservative.

In the Celestial Empire, the price of this gasoline will only rise, how can there be any reason to fall? A few years later, even in the context of the world financial crisis, China's oil prices have remained high, and have been stable at about eight yuan.

In the next few years, breaking through ten yuan per liter is a sure thing, and the price of oil will definitely only rise and not fall, which is why many car consumers in big cities, after the first hot time to buy a car, will choose to park their cars at home and dare not drive. ”

Hehe, so next year, after the outbreak of the world financial crisis, if we Huayang Power timely put a new generation of hybrid vehicles with this kind of strong hybrid system into the market, will we still worry about the sales of this car? . ）