Analysis of the advantages and disadvantages of blade batteries（2）

However, compared with ternary lithium batteries, lithium iron phosphate batteries have the advantages of high safety and long service life. Today's "blade batteries" effectively weaken the shortcomings of low energy density of lithium iron phosphate batteries, and future application prospects will be wider. For BYD, the lithium iron phosphate battery is its strength, and the "blade battery" creates it; the technical advantage of "blade battery" is that compared with traditional lithium batteries, the size is smaller, the capacity is larger, and the safety is greatly improved. Essence Stabbing test does not burn, which can effectively reduce the potential danger caused by the damage of the battery due to external force. "Blade batteries" can skip the "module" during grouping through structural innovation, which can greatly improve; _Ditage of _ blade battery 1 low -temperature industrial condition is poor. Under cold winter conditions, battery power will be greatly reduced. The low temperature limit of lithium iron phosphate is 20, while the ternary lithium battery can reach 30. Attenuation is about 10%, and lithium iron phosphate reaches 20%. For large cells with a length greater than 0.6 meters, the battery cells also evolve in a large capacity direction, but the cells have a flatter shape and narrower. The long side can be customized, and the maximum stability length of the cell can reach 2100mm. It is arranged together in a formation shape. Insert the battery pack like "blade", also known as "blade battery".

The material cost of the blade battery is very low. At the same time, some people have done experiments. If its unit volume density increases, it will have a higher endurance effect than traditional batteries, and the car can run further. At the same time, the size of the blade battery is very small, which will bring good benefits to the vehicle; 1. The external force is squeezed in the previous article. We analyze the most serious safety problem in lithium batteries is burning. Even explosions, the root of these problems lies in the heat out of control inside the battery, and the primary requirement to avoid heat out of control is to prevent the battery from being squeezed by the external force when colliding; BYD's blade battery is here; Mass production is because the blade battery must be equipped on the BYD's own model, and the existing production capacity has no time to take care of the external supply. Naturally, the rising star BYD's acupuncture experiments. It caused heated discussion on industry access.