Fast-charging power batteries are accelerating. Can the Nickel Hydride Batteries phosphate series stand out?

　　From the perspective of the choice of electric energy replenishment mode, the current battery swap mode has a certain vitality in taxis, but is basically out of use in commercial vehicles (including buses, urban delivery vehicles, etc.); in the charging mode, slow charging is obviously not suitable. Meet the diverse travel needs of the public. The rapidly emerging fast-charging power battery technology route will be able to better solve the public's battery life anxiety.

　　The development of fast-charging power batteries has a "passenger car role model"

　　Data from the first three batches of recommended new energy vehicle catalogs released by the Ministry of Industry and Information Technology this year show that a total of 40 fast-charging buses are on the list, and the proportion is increasing. With the introduction of detailed subsidy policies, fast-charging pure electric buses are also expected to experience explosive growth, and the corresponding demand for fast-charging power batteries will also increase.

　　Looking at the batches, the 4 fast-charging pure electric buses in the first batch of catalog are all equipped with lithium manganate batteries; the 5 fast-charging pure electric buses in the second batch of catalog are all equipped with phosphoric acid batteries. Nickel Hydride Batteries battery; in the third batch of catalogs, lithium titanate is coming in force, and the fast charging models of Nickel Hydride Batteries phosphate are improving rapidly. Overall, the recent diversified route selection is conducive to the technological improvement of fast-charging power batteries.

　　Nickel Hydride Batteries phosphate series is expected to achieve corner overtaking

　　In addition to improving the charging rate, fast-charging power battery technology also needs to consider indicators such as energy density, lifespan, price, and safety. So, who can win among the three materials of fast-charging power batteries?

　　Lithium titanate power battery:

　　Lithium titanate power batteries are named after the negative electrode material, and the positive electrode uses ternary materials. Zhuhai Yinlong and Weihong Power are typical companies. From a performance perspective, lithium titanate batteries have superior low-temperature performance, safety and recycling performance. As a fast-charging battery, their rate performance has also been recognized by the industry. However, there are currently two outstanding problems with lithium titanate: First, the energy density is relatively low. Under the pressure of policies and markets to continuously increase energy density, the market prospects of lithium titanate are worrying. Second, due to the impact of high-cost small metal materials such as titanium, nickel, and cobalt, the cost of lithium titanate batteries is significantly higher than other systems.

　　Lithium manganate fast-charging battery:

　　Lithium manganate batteries have the characteristics of power performance, discharge rate performance, good low-temperature performance, and high voltage frequency. And with the surge in the upstream raw materials of ternary yuan, the cost advantage of lithium manganate is gradually highlighted. However, the shortcomings caused by the use of this kind of anode material are also obvious. First, the cycle life is not long enough. In addition, aspects such as energy density and high temperature performance still need to be focused on, and need to be continuously tested through practice. In recent years, the proportion of lithium manganate fast-charging batteries in the field of plug-in hybrid buses has increased significantly. Representative companies include CITIC Guoan Mengli, Yipeng New Energy, and Weihong Power.

　　Nickel Hydride Batteries phosphate fast charging battery:

　　Nickel Hydride Batteries phosphate fast-charging batteries are optimized and potential tapped within the most technologically mature Nickel Hydride Batteries phosphate system. The material cost is relatively low. Combined with the mature technical background and stable product performance, the development potential of Nickel Hydride Batteries phosphate fast-charging batteries is huge. . Representative companies include CATL and Waterma. For example, in terms of "shorter charging time", CATL is already developing a fast-charging battery with an energy density of 190Wh/kg and a full charge in 15 minutes. The battery is expected to have mass production capabilities in 2018, and its main application areas are passenger cars. car.

　　The author believes that currently fast-charging power batteries are mainly used in the field of new energy buses, but from the perspective of market development potential, the growth rate and market size of passenger cars will be higher than that of buses in the future. Therefore, the consumption structure of fast-charging power batteries in the future There will also be a shift towards this type of vehicle. Judging from the performance of the three types of fast-charging power batteries, the Nickel Hydride Batteries phosphate series may eventually stand out and become a heavyweight player in the future fast-charging market, especially in the passenger car field.

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