Coquettish Rebirth

Of course, Jia Hongjian would not be furious about the old man's actions!why?First of all, our Jia Hongjian is not so tempered, and we don't get angry all of a sudden if others don't give face.On the other hand, the old man is our pillar!As a boss, if you want to get angry, you must be smart enough to know who you can get angry with and who you can’t!For the star salesmen in the company, you must not get angry, and you must not get angry with Mr. Guo Konghui, who is a master of technology!To be honest, even if Guo Konghui lost his temper at Jia Hongjian, Jia Hongjian would have to smile at him!Who made others the key to making money for our company?

So Jia Hongjian wasn't angry at all, not at all!At such a time, he smiled instead, as if he didn't mind at all, "I didn't decide to make it now, don't worry, old man, I know what you think. I mean, everyone can think about it now, and some At that time, our thinking was always on scientific research, but we might not have thought that the things at hand can directly produce [-]% to [-]% of the effect. So what I mean is that everyone brainstorm and think about it. Let's change our thinking and come up with it. Naturally Best, it doesn't matter if you can't think of it, we don't suffer, right?" We must leave room for what we said, right?Let's even save face for the old man, right?

Sure enough, the old man heard what Jia Hongjian said, and he nodded after thinking about it.Regardless of whether he really agrees with what Jia Hongjian said just now, no matter how Jia Hongjian is the boss, everyone will naturally give the boss three points, so at this time he must support Jia Hongjian. "Well, what Mr. Jia said is still very reasonable. It's like the time when our red car was fast on the German highway, and the controllability dropped significantly. After we came back, we had to start from the technology at hand if we wanted to improve. ... I think Mr. Jia's instruction is very good, let's talk about it, how should we do it with the technology that is currently on the market?"

Once the old man made such a noise, the others would of course want to give him and Jia Hongjian face, so they began to think about it one by one.First of all, Ding Haitao talked while thinking, "For pure electric vehicles, let's not talk about the motor, we must first talk about the battery. Iron-lithium batteries are safer than ordinary lithium cobalt oxide batteries, and lithium cobalt oxide batteries are easier. Explosion, but iron-lithium batteries are not 100% safe. There seems to be a saying abroad that iron-lithium batteries will explode when overcharged under certain conditions, and it can be reproduced after many tests... If you want to be completely safe, then cobalt Both lithium-acid and lithium-iron batteries are not enough, and the energy density of lead-acid batteries is too low..."

Listening to Ding Haitao's words, Jia Hongjian understood the terminology behind it very well.What is lithium cobalt oxide battery?To put it simply, most ordinary people on the market can use lithium batteries.Those are all lithium cobalt oxides, including the 18650 battery that Jia Hongjian mentioned.Such a battery has a larger capacity than an iron-lithium battery, but it is also more dangerous. For example, Tesla uses such a battery.Then the iron-lithium battery, that is, the battery with the name 26650, that is, the battery specification with a diameter of 26 mm and a length of 65 mm.However, the iron-lithium battery has a small battery capacity.So if you want to achieve a higher "power", it must be more than the number of lithium cobalt oxide batteries.In addition, the specification of 26650 is larger than that of 18650, so the battery pack made of iron-lithium battery must be much larger than the battery pack made of 18650!

Later generations of civilian cars of a brand like Tesla can use more than 7000 18650 cells as battery packs.And things like pure electric buses that began to appear around 2012 in later generations are said to be basically powered by iron-lithium batteries. If you want to maintain a power similar to that of Tesla, is it true that people use more than 7000 knots? , This electric bus will use about 26650 knots?And the volume may suddenly double in size?Then on the other hand.To put it bluntly, this bus is a bus, so the usual number of passengers is dozens of people, right?The weight of this person is counted, and the basic climbing power must be maintained. It may be possible to use a [-] of [-] to [-] knots to form a battery pack!How big is this volume going to be?So that is to say, a bus can hold such a large battery pack, but there is really no room for a car!

Even talking about Tesla.Using 7000 or even 8000 cells to make their battery packs, maybe more than half of the space in the entire chassis will be used for the battery pack. What if it is replaced with a 26650 or other iron-lithium battery?It is estimated that there is no space in the trunk to maintain the same power, right?Are you still messing around like this?Just when Jia Hongjian was thinking this way, Ding Haitao, who had finished introducing the basic situation, just continued to say, "So if we use the safer 26650, it can be seen that a lot of space in the whole vehicle will be occupied by the battery pack...but Is it possible to consider using in-wheel motors to empty the engine compartment and leave the engine compartment for the battery pack? No...according to the statistics in the United States, the probability of accidents in the direction of the front of the car is relatively high, or put the battery pack in the backup In the trunk? Just like a rear-drive car, put the suitcase in front of the car?"

Whoa!Not to mention, what Haitao said is a bit interesting!Jia Hongjian understood what hub motors were like - isn't this just like the electric cars that drive through the streets and alleys?In such a time and space, because Jia Hongjian and Huaxia Hi-Tech developed electric vehicles early, there are already all kinds of electric vehicles in China, and all electric vehicles use in-wheel motors, that is, the motors are directly pressed on the wheels. .In this way, a lot of space can be saved, and there is no need to reserve space for the engine like the previous motorcycles!What if electric vehicles also use hub motors?Inside the four wheels is the electric motor. Of course, it may be larger and more powerful, but it can also be placed together with the suspension, so that the engine compartment does save space!

And if we learn from Tesla, we will get a gear, so that there is no need for a huge gearbox space, right?In this way, almost everything in the engine compartment is unnecessary!This engine compartment becomes another trunk!Taking into account the tendency and probability of car accidents, it is not impossible to transform the engine compartment into a trunk, and then use the trunk as a space for the battery pack!Although most people are used to putting sundries in the trunk, but like the classic Volkswagen Beetle, the engine is at the back and the trunk is at the front!So although ordinary people may not be used to it after we change it, they will definitely get used to it if they adapt to it!

However, Jia Hongjian also thought of another problem!Just when he thought about it, he heard Mr. Guo Konghui speak, "No, how can the battery pack be put in the trunk? In case of a serious rear-end collision accident, the battery pack will definitely burn or even explode! After all, there are lithium ions in it! Whether it is lithium iron or lithium cobalt oxide, if it is punctured and comes into contact with the air, and then some conditions are added, it will burn violently. What if it happens to meet the conditions when the car crashes? What if The car in front and the people waiting for the bus were all stuck in the car and couldn't move, and the car was burning violently at this time? This is too unsafe!" That's right!Jia Hongjian also thought of such a question!How did Tesla's car "spontaneously ignite" in the previous life?The armor of the battery pack placed on the chassis of the car was punctured by inexplicable debris on the road, and then the battery inside was also punctured, so it caught fire all at once!How dangerous is this thing?Even Tesla would only dare to put the battery pack on the chassis, and would not dare to put it anywhere else. The chassis is the safest place, right?Since people dare not put it, why do we put the battery in the front or rear of the car?

Although it is said that gasoline-engined cars also spontaneously ignite, like the car in Jia Hongjian’s family in the previous life, it almost ignited—once when the car was repaired in a garage, the car parked in front of the garage for half a day in summer, and then waited until When someone came to check and drive the car in, the wires that were already a little bit old would start to smoke immediately!At that time, I heard that it took a few seconds to change from a little smoke to a big smoke!Fortunately, the master who drove Jia Hongjian's car in was so eye-catching. He immediately stopped the car and cut the wire with his hand. Otherwise, if he hesitated a little, the interior of the car might be on fire!And cars like Volkswagen, there are even more spontaneous combustion. I heard that the boss of Volkswagen Shanghai or somewhere, drove his own company brand car and spontaneously combusted on the way to work in the morning?Some netizens even ridiculed the public that this is "one-click cremation"!

So really speaking, gasoline engine cars are not safe anywhere!But here comes the problem. Although gasoline engine cars are not very safe, everyone will doubt new things.Volkswagen’s cars have one or two, and everyone knows that it’s bad luck or something, but our new electric car has not been on the market for a long time, and one of them is all of a sudden, which can immediately scare potential consumers from Okay to buy it!People don’t know how likely it is to catch fire. People think that at least a car with a gasoline engine has a low chance of catching fire. It seems that this electric car will spontaneously combust after only a few cars are sold. The probability seems to increase immediately. ah!The common people and the market must be demanding on new things.It is impossible for new things to achieve the same level of safety as old things before, it must be safer than old products!

And besides, other car manufacturers are not stupid.Our car has a one-in-a-million chance of catching fire, but during the promotion stage of the new product, if other competitors come to find the trolls, we will be the ones who suffer!Therefore, the safety of our electric vehicles must be the first priority! (to be continued..)