BYD launched the "blade battery", belongs to the lithium iron phosphate battery, from the product structure, is the power battery cell lengthening, so that the individual cell shape flat, narrow, although it still retains the structure of the module, but it is through a number of "blade" bundle to form a module, through the combination of a few large modules into a battery, the overall idea of the same The overall idea is to reduce the module structure and single connection harness to improve the efficiency of the package. At the same time, it can greatly improve its energy density.
Lithium iron phosphate battery uses lithium iron phosphate (LiFePO4) as the cathode material, using iron to do the battery raw materials for a low cost, two does not contain heavy metals, less environmental pollution, operating voltage of 3.2 V. Lithium iron phosphate crystal P-O bond solid, so there is no leakage when stored at zero voltage, high temperature conditions or overcharge safety is very high, can be quickly charged, high discharge power, no The disadvantages are poor low temperature performance, small cathode material vibranium density, low energy density, and questionable product yield and consistency.
What is the difference between blade battery and ternary lithium battery?
Ternary lithium battery is called "ternary material battery", generally refers to the lithium battery with lithium nickel cobalt manganate (Li (NiCoMn) O2, NCM) or lithium nickel cobalt aluminum acid (NCA) ternary cathode material, the nickel salt, cobalt salt, manganese salt as three different composition ratio for different adjustments, so called "ternary", contains many different ratios of types of batteries. Distinguished by shape, it can be divided into soft pack battery, cylindrical battery and square hard shell battery. Its nominal voltage can reach 3.6-3.8V, relatively high energy density, high voltage platform, high vibration density, long range, high output power, poor high temperature stability, but excellent low temperature performance, and high cost.
The above mentioned ternary lithium batteries and lithium iron phosphate power battery advantages and disadvantages, it is very obvious to see the biggest advantage of lithium iron phosphate is the safety and stability, high cycle life, the disadvantage is the poor low temperature performance, relatively low energy density, while ternary lithium batteries can do relatively high energy density, but poor high temperature performance, safety and stability compared to lithium iron phosphate, but also slightly inferior. If BYD launched the "blade battery" can really effectively solve the problem of energy density, while the price is also very competitive, there is still a lot of market potential.
