What is the difference between hydrogen fuel power lithium battery and lithium battery?

The service life of hydrogen fuel power cells is the best in the world at 5000 hours. Under ideal conditions, 5000 hours can be achieved at the speed of 100 kilometers per hour of a vehicle, and the mileage is 500000 kilometers. The performance of fuel power cells will decline during use, and the service life of catalysts will be affected by dirty air pollution.

In terms of safety, hydrogen fuel power cells are not perfect. Leakage and explosion may occur, and the explosion is very powerful. In particular, comprehensive and systematic protection shall be done, and any adverse conditions shall be taken into account to nip in the bud. Qiu Xinping further said that in terms of cost, hydrogen fuel power cells are not cheap, but key components, such as perfluorinated membranes and platinum catalysts, are expensive.

Whether in basic research or industrialization, fuel power cells in Japan are developing rapidly. Although they have dropped by as much as 80% compared with 10 years ago, the current price is still on the high side. In addition, the construction cost of hydrogen refueling station is not low, and transportation cost, construction cost, gas safety and other factors should be considered.

In contrast, although the current lithium-ion batteries have a gap in energy density and fast charging compared with hydrogen fuel power cells, they have advantages in fast power conversion. Meanwhile, with the energy density of power lithium battery modules reaching 300 watt-hours / kg by 2020 proposed by the government and the industry as the next development goal, all parties are also committed to improving the energy density of lithium-ion batteries.

It is undeniable that there are potential safety hazards in lithium-ion batteries. However, with the deepening of people's understanding of the safety of lithium batteries, we are confident that we will solve the safety problems of lithium batteries within 3-5 years by protecting and managing the batteries at multiple levels, such as through battery cell technology and battery system. Qiuxinping said.

Taking Tesla electric vehicle as an example, its battery management system can connect more than 8000 lithium-ion batteries in series at most to maintain the consistency, stability, and charge and discharge safety of the battery, so Tesla's endurance mileage can reach 350 km. At present, there are more than 2000 battery systems in series in China. Efforts should also be made to catch up with the gap in system integration technology.

To make a revolutionary breakthrough in China's power lithium batteries, the Ministry of industry and information technology said in late February that it would invest 500million yuan to establish a powerful lithium battery research institute with nine companies.

So what is the technical route of power lithium batteries in China in the future?

Many experts interviewed by reporters previously believed that considering the long cycle of the battery industry, it would take a long time for technology accumulation and breakthroughs. Therefore, it is difficult for a powerful lithium battery to make a revolutionary breakthrough. It is expected that in 5-10 years, lithium-ion batteries will be the main type and the third generation of lithium-ion batteries will be developed.