In the past two years, because of the frequent safety problems of power batteries, many car companies have put a lot of thought into power batteries, after all, safety is the biggest luxury of a pure electric vehicle, so a large number of named power batteries have come out, such as BYD's blade batteries, GAC Aean's magazine batteries, the Great Wall's Dayu batteries, etc. Many people hear their names strangely, they think that these power batteries are high-tech products, and today they will come to pick up what they are all about.
Blade battery
Manufacturer: BYD Automobile
BYD's blade battery is well understood, and its focus is on changes in battery type and battery structure.
The first is the change in battery type, from a ternary lithium battery to a lithium iron phosphate battery. As we all know, many car companies in order to make pure electric vehicles run farther, they use ternary lithium batteries with high battery energy density as power batteries. However, the ternary lithium battery also has shortcomings, its thermal stability is poor, it is easy to catch fire and explode at every turn, it is not very safe, if there is no bull fork BMS battery management system to manage it, it can rebel.
On the other hand, lithium iron phosphate batteries do not exist in such a situation, stable and high safety. However, things that are too stable generally have no great ability, no guts, and where to produce. At this time, BYD thought of a way to redesign the structure of lithium iron phosphate batteries. In the past, the structure of lithium iron phosphate batteries was connected to another module, and BYD designed it to be flake-like, strip-like, and the name of the blade battery came from this.
The blade battery is to do the structural parts, but also as the energy body, which is also when the father, but also when the mother, to complete the lithium iron phosphate battery because of the low energy density, resulting in short mileage of the short board. Therefore, a major innovation of BYD blade batteries with structural changes, hardness, energy density, and heat dissipation area have increased, and it is not easy to short circuit. Of course, blade batteries also have high-tech applications such as laminated structure + ceramic coating technology in batteries.
Magazine battery
Manufacturer: GAC Group
GAC Aean's magazine batteries have two kinds of lithium iron phosphate batteries and ternary lithium batteries, and here we focus on ternary lithium magazine batteries. The above said blade battery also said, this ternary lithium battery is more jumpy, poor stability, unsafe, you have to have someone to manage it, and the magazine battery "magazine" is to manage the ternary lithium battery.
So to everyone, as long as the cell of the ternary lithium battery has a fire, the remaining cell base can be said to be unable to run away. It was too fast to flash. The magazine battery of GAC Aean is to kill the signs of the battery cell fire in the cradle, so that it cannot burn, even if it is burned, it cannot be transmitted to other batteries. The magazine battery, powerful is here. In order to achieve this ideal effect, GAC Group has made no less efforts.
First of all, I thought about the battery cell and used ultra-high heat-resistant and stable cells; followed by the super heat-insulating battery safety cabin, that is, the "magazine" in the narrow sense; and then the three-dimensional speed cooling system and the full-time control of the fifth generation battery management system. All of the above add up to make the magazine battery "impregnable", and the fire cannot be burned out or burned in.
Dayu battery
Manufacturer: Great Wall Motors
They all said that they should read history, study history, and be able to use history. The Dayu battery of Great Wall Motors is an example of learning history and using history well. In order to protect the safety of the power battery, Great Wall Motors has changed its thinking. It believes that there are too many cells in the battery, and that a few cells that catch fire are completely normal and cannot be avoided at all. At this time, how to minimize the loss of the battery cell has become a problem for Great Wall Motors to consider.
To put it simply, we can think of the Dayu battery as an upgraded version of the magazine battery.
The magazine battery avoids the spread of fire and high temperatures from a single cell through magazine-like battery safety technology, and if necessary, can also implement extremely fast cooling of the battery cell. While the Dayu battery has the above functions, it can also allow the high temperature, high pressure gas and fire flow in the cell to disperse to the battery pack, so as to avoid the contradiction of being too concentrated and erupting in one place. In addition, dispersed high-temperature, high-pressure gas and fire flow can be discharged through a dedicated channel to discharge the battery pack. At the same time, it can also block the flow of oxygen outside the car into the battery pack, avoiding larger combustion of the battery pack.
Write at the end:
Although the names of these power batteries are various, car companies have tried their best to ensure the mileage of the power battery on the basis of ensuring the mileage of the power battery, after all, the user's life safety is above all else. It should be noted that at this stage, car companies have not yet made a big breakthrough in the raw materials of power batteries. In the future, the power battery will also be a must for car companies and battery manufacturers, who is leading in the power battery, who occupies the commanding heights of the new energy automobile industry. (Text/Uvision Auto Forward)
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