The "two poles" of power batteries compete for supremacy, and BYD's "Blade Battery" turned out
For a long time, ternary lithium batteries and lithium iron phosphate batteries have been the mainstay of new energy vehicle power batteries. "Two poles", the competition between them is always going on. At first, lithium iron phosphate batteries were favored by many car companies due to their high safety, and they quickly gained a firm foothold in the market. However, its energy density is insufficient compared to ternary lithium batteries. Under the almost crazy pursuit of long battery life by various car companies, ternary lithium batteries have gradually gained the upper hand.
Although ternary lithium batteries have alleviated consumers' mileage anxiety to a certain extent, they have a "fatal" flaw: low safety. In recent years, some car companies have blindly pursued long battery life of new energy vehicles in order to obtain high subsidies (the longer the driving range, the higher the subsidy). They even ignore safety to enhance the energy density of ternary lithium batteries to extend their battery life. mileage. This has led to the safety of ternary lithium batteries being reduced again, triggering a series of fire incidents in new energy vehicles in 2019.
Frequent safety accidents of new energy vehicles have attracted close attention from consumers. According to incomplete statistics, consumers are 14 times more concerned about the "fire" incident of new energy vehicles in 2019 than in 2018. There is no doubt that the safety of new energy vehicles has become one of the most important issues for consumers. If the safety of power batteries cannot be resolved, a decline in sales of new energy vehicles is inevitable; more importantly, the new energy industry will also be affected.
Is there a perfect solution for power batteries?
BYD has proven with its strength and actions: Yes!
As a result, BYD's "Blade Battery" was born.
BYD Blade Battery: Let me solve the problems that lithium iron phosphate batteries and ternary lithium batteries cannot solve
As mentioned above, lithium iron phosphate batteries and ternary lithium batteries are respectively It faces technical problems such as short cruising range and low safety, which also plagues many battery companies and car OEMs. As a leader in new energy vehicles, BYD has many years of technology accumulation and strong innovation capabilities. Based on the world's leading battery technology, BYD has revolutionary launched the "Blade Battery", which will lead the world to a new level of power battery safety.
BYD Blade Battery leads the world to a new level of power battery safety. What is the secret?
BYD breaks out of "inertial thinking". It does not adopt the usual "module" design of traditional power batteries. Instead, it makes the battery core into a "blade" shape and then stacks the "blade" layers together. "Pack". As the strength of the blade battery increases, the internal structure is also reduced, so the volume is increased by 50% and the cruising range is longer.
More importantly, after the blade battery volume is increased, BYD can "justifiably" use lithium iron phosphate with better thermal stability as the battery core. In order to be more secure, BYD adopts the industry's only all-round high-temperature "ceramic battery" technology. It uses high-temperature durable and high-temperature ceramic coatings with excellent insulation in high-risk locations inside the battery to improve the safety of blade batteries.
After the volume utilization of the blade battery is improved, its volumetric energy density is close to that of the ternary lithium-ion battery. The high volume density can arrange large-capacity batteries in a smaller space, and a single charge can satisfy 600 Kilometer endurance requirement. As for the service life, the blade battery can be charged and discharged more than 3,000 times and travels 1.2 million kilometers.
According to the official introduction, the blade battery will be the first to be installed on BYD Han EV, which will be launched in June this year. There are no plans to install it on other models. As BYD's flagship sedan, Han EV has a NEDC cruising range of 605KM. At this point, the battery life and safety issues that consumers are concerned about can be solved at the same time, and blade batteries will officially enter the historical stage of new energy vehicle power batteries.
The "acupuncture experiment" made blade batteries famous in one fell swoop. From then on, new energy vehicles are safe and worry-free
Car companies and battery manufacturers usually conduct tests on power batteries in order to verify their safety. Although there are 300 tests, the vast majority of power batteries are stuck at the "acupuncture test" level (no ternary lithium battery has yet passed). As the saying goes, "the law does not punish the public," the country can only temporarily use the acupuncture test as a non-mandatory standard.
BYD has always adhered to the safety-oriented battery development concept. It knows well that safety affects the stability of power batteries, so BYD has never stopped climbing the "Mount Everest" of "acupuncture experiments".
BYD's move is a comprehensive consideration from the perspective of the new energy vehicle industry and consumers.
Practice is the only criterion for testing truth. The Blade Battery is technically impeccable and the data is almost perfect, but everything must be told through actual actions. What's more, BYD President Wang Chuanfu also specifically emphasized: "The blade battery embodies BYD's determination to completely end the safety pain points of new energy vehicles, and is more capable of leading the global power battery technology route back to the right path, removing the word 'spontaneous combustion' from the dictionary of new energy vehicles." "
Using "dry" words to describe it is too abstract. Let's look at the comparison of acupuncture test results of ternary lithium batteries, lithium iron phosphate batteries, and blade batteries through videos:
p>Video of BYD Blade Battery Acupuncture Experiment
From the video, we can easily see that under the same test conditions, the ternary lithium battery experienced drastic temperature changes at the moment of acupuncture, and the surface temperature The temperature quickly exceeded 500°C, and extreme thermal runaway occurred. It began to burn violently, and the eggs on the surface of the battery were blown away. There was no open flame after the traditional lithium iron phosphate battery was penetrated, and smoke was ejected from the battery pressure relief valve, and the surface temperature reached At 200℃~400℃, the eggs on the battery surface are scorched by the high temperature; BYD's "blade battery" has no open flame or even smoke after penetration. The temperature of the battery surface is only about 30℃, and the eggs on the battery surface do not change.
Experimental results prove that BYD's blade battery can still maintain strong "self-control" capabilities even in the face of extreme conditions, and will not overheat the battery due to internal short circuit, thus causing the battery to spontaneously ignite. Its safety It has incomparable advantages between ternary lithium batteries and ordinary lithium iron phosphate batteries, and this advantage will maximize the safety of drivers and passengers in the car.
BYD Blade Battery: The open world welcomes you
It is worth mentioning that BYD will open up the blade battery industry chain and carry out global cooperation, so that the entire new energy automobile industry and consumers Benefit. BYD Vice President He Long said: "Today, almost all car brands you can think of are discussing cooperation plans with us based on "blade battery" technology.
In fact, BYD had already gone abroad before this. , facing the world, its electric buses are popular in Europe, Japan and other countries. In addition, BYD has also attracted cooperation from Mercedes-Benz and Toyota with its hard power.
Written at the end:
The advent of BYD's blade battery allows new energy vehicles to bid farewell to "spontaneous combustion". It brings power batteries back on the right track of safety, which is bound to push the new energy vehicle industry to a higher level. Dimension. Next, we only need to look forward to its excellent performance on the Han EV. I believe that BYD Blade Battery will be favored by more and more car companies in the near future, and Made in China will continue to lead the global new energy vehicle market. .
Note: The pictures are from the Internet, and the rights belong to the original authors.
This article is from the author of Autohome Chejiahao and does not represent the views of Autohome. position.