Can the LiFePO4 battery for vehicles exceed the 600km range?

　　1. Is it possible for lithium iron phosphate battery pack to exceed 600km? At present, all the developing pure electric vehicles are powered by lithium battery and motor. In the current pure electric vehicle market, power lithium batteries are mainly ternary lithium ion batteries, and some models use lithium iron phosphate batteries. With the continuous improvement of battery technology, there are more and more kinds of lithium iron phosphate batteries. Is it possible for lithium iron phosphate battery to reach 600km? Is it possible for lithium iron phosphate battery pack to exceed 600km? At present, lithium iron phosphate battery and ternary lithium ion battery are common in electric vehicles. Lithium iron phosphate battery does not contain precious metal elements, and its cost is much cheaper than ternary lithium ion battery. The energy density of the ternary lithium-ion battery can reach more than 140whkg, which is directly reflected in the increasingly impressive NEDC range, which makes many electric vehicles exceed the 600km range, and its low temperature resistance and charging performance are far better than lithium iron phosphate batteries. It is reported that BYD Hanjiang will be listed in June 2020. Equipped with lithium iron phosphate battery pack, the range can reach 600km, ranking first among new energy electric vehicles. Although the range of Tesla models is 660km, the price is about 800000. If BYD Hanjiang's price is less than half of Tesla's price, it will occupy the new energy market.

　　2. BYD blade battery is a technology that further improves the efficiency of battery pack integration by flattening and lengthening battery cells. According to the official news of BYD, BYD Hanjiang, a pure electric vehicle equipped with blade battery for the first time, can even reach the endurance of about 600km. Therefore, the endurance of lithium iron phosphate battery may reach 600km. For power lithium battery pack, the energy density of the battery pack is a key indicator. The higher the energy density of the power lithium battery pack, the better the mileage performance of the power lithium battery pack with the same volume or mass; The energy density of lithium iron phosphate battery is lower than that of ternary lithium ion battery pack. However, BYD's blade battery pack technology can improve the energy density performance of lithium iron phosphate battery to a certain extent, and the blade battery can improve the efficiency of the battery pack.

　　3. Factors Affecting the Range of Lithium Phosphate Battery

　　(1) Battery capacity: The larger the battery capacity, the longer the standby time. The battery of electric vehicle will use "kwh" as the measurement unit, which is usually called "degree". The higher the battery power, the more power it carries;

　　(2) Vehicle weight: This will not only affect mileage, but also greatly affect battery efficiency. Therefore, the lightweight of pure electric vehicles is more important than fuel vehicles;

　　(3) Electrode efficiency: power lithium battery can directly output high-voltage DC. If asynchronous motor is to be used, high-power inverter shall also be used to convert DC to AC, which may cause some energy loss in this process;

　　(4) Battery material: At present, BYD's high-end main pure electric vehicle products use lithium iron phosphate batteries. It is expected that the products in the later stage will buffer ternary lithium ion batteries, which means that the energy density will be further improved and the driving range will be basically significantly improved. At present, the new energy vehicle market is also pursuing low-cost, high energy density batteries.

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