Technology Trends of Fuel Power Lithium -Lithium - Ion Battery Equipment

Technology Trends of Fuel Power Lithium Batteries -Lithium - Ion Battery Equipment

A Zero Emission Solution for Road Transport - Fuel Power Cells

On June 9, 2019, Wan Gang, the former minister of science and technology, the current vice chairman, the chairman of the Chinese People's Political Consultative Conference (CPPCC) and the Chinese Association for Science and Technology, said in an interview that my country, as the world's largest auto market, is ready to undertake Hydrogen fuel cell vehicles are like the absence of pure electric vehicles. It's time to think about a hydrogen society, he said. We are going a step further in the direction of fuel power cells.

What is a fuel power cell?

A fuel power cell is an energy conversion device. Unlike energy storage devices such as lithium-ion batteries, fuel-powered cell stacks can directly convert hydrogen-carrying hydrogen into electricity through electrochemical reactions. Lithium-ion batteries, on the other hand, are charged over a long period of time to store energy and discharged during driving to drive the vehicle. Therefore, the range of a fuel-powered cell vehicle depends on the amount of fuel in the vehicle, that is, how much hydrogen can be stored in the hydrogen storage tank, just like a conventional diesel locomotive. In addition, a fuel cell vehicle has a small battery pack that stores the surplus electricity that comes from the fuel cell battery, as well as the energy recovered from the car's braking, and works with the fuel cell to power the car when necessary. Therefore, compared to lithium-ion batteries, fuel power cells have advantages in long-distance use.(Lithium - Ion Battery Equipment)

Technology Trends of Fuel Power Cells

With the high-profile launch of the Toyota Fuel Cell Mirai in 2014, the global fuel cell industry entered a new era. The titanium alloy bipolar plates used by Toyota increase the power density of the fuel power cell stack to 3.1kw/L and will reach 4.0kw/L. Higher power density makes stacks smaller, more compact and easier to install. However, the corrosion-prone nature of sheet metal results in higher material and surface treatment costs. However, with the increasing maturity of technology and the increase in output value, metal bipolar plates have a lot of room for cost reduction.

In terms of catalysts, platinum is still an important component of electrochemical reaction catalysts for fuel power cells. At present, the industry level of Pt is about 0.5~0.7g/kW, while the Toyota Mirai reactor is still at the leading level, and the consumption of Pt is about 0.3g/kW. With the development of new platinum alloy catalysts and catalyst supports such as carbon nanowires, the amount of platinum is further reduced, possibly reaching the level of platinum used in diesel aftertreatment systems at that time. According to statistics, the US Department of Energy (DoE), based on material cost in 2016, when the production value of fuel power cells reaches 100,000 units/year, accounting for about 40% of the cost of electrocatalyst reactors, so the reduction of Pt consumption will greatly reduce the reactor power cost.

As a hydrogen system, it has basically covered a 70mpa hydrogen storage tank and a hydrogen circulation pump for recovering exhaust hydrogen, which on the one hand improves the fuel economy of the system, on the other hand, it also effectively uses water from the cathode side of the electric reactor . In terms of air systems, the requirements for air compressors are getting higher and higher as the increase in operating pressure helps to improve the performance of the reactor. Oil-free, high-pressure ratio, large flow, and high efficiency have become the basic requirements for the development of fuel-powered cell air compressors. Typical types of air compressors include root, screw, turbine and vortex. The two-stage electronic turbocharger is used in conjunction with the air bearing, with compact structure, high pressure ratio and low noise, and is very popular in the market.

In terms of vehicle usage, commercial vehicles include trucks and city buses, which are easier for fuel power cell system integration and hydrogen storage tank placement due to sufficient placement space. More hydrogen could further improve the advantages of fuel cell vehicles on long journeys. In addition, the general hydrogenation time is 5-10 minutes, which is more suitable for long-distance transportation. Compared with pure electric vehicles, fuel-powered cell vehicles have incomparable advantages in road transportation due to long driving distance and short refueling time. At present, the fuel power cells used in commercial vehicles are still mainly graphite plate reactors. The advanced manufacturing process ensures the reliability and durability of the reactor, while also reducing the procurement cost of the main engine plant. In addition, the modularity of the fuel power cell system reduces the cost of mass production.



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