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release time:2024-04-15 Hits: Popular:AG11 battery
What is a "blade battery"? What about BYD's blade lithium polymer batterytechnology?
What is a "blade battery"? What about BYD Blade lithium polymer batterytechnology? BYD's blade lithium polymer batterywill be mass-produced for the first time in March this year at the Chongqing factory, and the first model equipped with this battery, BYD Han, will have a range of 600km. In addition to high safety, the blade lithium polymer batteryalso has the characteristics of long life, and the vehicle life can reach more than one million kilometers. "The editor below will explain what a "blade battery" is? How about BYD's blade lithium polymer batterytechnology?
What is a "blade battery"?
Regarding BYD's "blade battery", there are different voices in the industry. The international investment bank research report believes that BYD lied about these 300 core patents. The reason is that in terms of batteries, whether it is BYD's iron lithium polymer batteryor ternary battery, the core patents are in European and American countries, and China has no core patents; furthermore, as far as blade batteries are concerned , the application is for a utility model patent rather than a technology patent.
"Blade Battery" is named "Blade" because this lithium polymer batteryis more "flat" and "elongated" in shape than traditional prismatic batteries. Moreover, BYD's blade lithium polymer batterycells can be up to 2.5 meters long, which is obviously not prepared for passenger cars. According to BYD's current business plan, BYD's pure electric buses will also use blade batteries in the future.
The blade lithium polymer batteryhas a compact internal capacity and a flat shape, which means that the blade lithium polymer batterydisassembles the traditional large lithium polymer batteryinto small batteries and rearranges them to strengthen the internal support performance, thereby reducing the external space. The "blade battery" technology based on lithium iron phosphate batteries has once again greatly expanded the application space of lithium iron phosphate. From May to June 2020, the volume energy density will increase by 50%.
On January 11, BYD is developing a new generation of lithium iron phosphate batteries - "Blade Batteries" which will be mass-produced in March this year. It is reported that the "Blade Battery" has more than 300 core patents. Its volume specific energy density is 50% higher than that of traditional iron batteries, its cost can be reduced by 20%-30%, its discharge rate will be greatly increased, and its lifespan will be as long as 8 years and 1.2 million kilometer.
my country's electric vehicle batteries are mainly divided into two categories: lithium nickel cobalt manganate, commonly known as "ternary battery", which is currently a product with a high market share, including the batteries used by Tesla; lithium iron phosphate, commonly known as "Iron battery" and BYD's "blade battery" fall into this category.
What about BYD Blade lithium polymer batterytechnology?
BYD's "Blade Battery" technology flattens the lithium polymer batterycore by increasing the length of the lithium polymer batterycore. According to BYD's patent, the company's blade lithium polymer batterycan be up to 2,500mm in length, which is more than 10 times that of traditional ordinary lithium iron phosphate batteries, which can greatly improve the efficiency of lithium polymer batterypacks. At the same time, compared with square aluminum shell lithium polymer batterysolutions, blade lithium polymer batterytechnology also has the advantage of good heat dissipation.
It is reported that the weight specific energy density of BYD's "Blade Battery" can reach 180Wh/kg, which is about 9% higher than before. This data is no weaker than the "811" ternary lithium battery, which means that the "Blade Battery" is still in use. Lithium iron phosphate batteries have high safety, high stability and low cost, and at the same time have reached the energy density of high-level ternary lithium batteries.
Although the weight specific energy density of BYD's "Blade Battery" is 9% higher than that of the previous generation battery, the volume specific energy density has been increased by as much as 50%. This is the real advantage of the "Blade Battery". Because this means that for the same model, BYD can increase the lithium polymer batterycapacity of the vehicle by 50% in the future. Although it may also have the impact of increased weight, the actual lithium polymer batterylife performance will definitely be greatly improved in the end.
According to BYD's "Blade Battery" patent, only through the "Blade" lithium polymer batterypatent technology, the volume specific energy density of ordinary lithium polymer batterypacks can be increased from 251Wh/L to 332Wh/L. At the same time, because the single lithium polymer batteryitself can bear the role of mechanical reinforcement, the lithium polymer batteryThe manufacturing process of the pack is simple and the manufacturing cost is reduced; this patent can directly arrange multiple single cells side by side in the lithium polymer batterypack, which not only saves material costs but also reduces labor costs. It is expected that the overall cost will be reduced by 30%.
There is no doubt that the mass production of "Blade Battery" represents BYD's technological progress, and it may become a landmark work in the history of brand development. The current performance and market potential of "blade batteries" are very promising, but judging the success of a product or a new technology must be tested by the market.
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