A brief description of the cost effectiveness of zinc air batteries

It is reported that the biggest consumption of zinc air batteries is electrical energy. After the discharge of electricity, zinc oxide powder in the end-of-life battery is electrolytically reduced to zinc powder and decomposed into chemical electrolytes. This regeneration process needs to consume more electrical energy.

It is understood that under normal circumstances, zinc air batteries discharged on electric vehicles require 4.5 kilowatt-hours of electrical regeneration for every kilowatt-hours of zinc powder discharged, that is, the regeneration to discharge is 4.5 to 1, which is the ratio of power consumption to two batteries., For example, compared with lead-acid batteries, nickel-metal hydrogen batteries, and lithium batteries, the power conversion efficiency is very low. It consumes about the same amount of electricity as electrolyzing water to make hydrogen and then using hydrogen for fuel cells to generate electricity.

According to experts 'calculations, taking a 10-meter-long bus as an example, the replacement of a new zinc air battery has 250 kilowatt-hours of electricity and can travel 250 kilometers, which is basically 1 kWh of electricity. According to the proportion of electricity required for electrolysis of zinc, including losses, electric vehicles need about 5,000 watts of electricity to travel 1 kilometer. The electricity cost of an electric car that uses zinc air batteries is 2 yuan per kilometer if it is used

In addition, zinc air batteries are recycled repeatedly. When the vehicle is delivered, it does not include battery costs. It only needs a special battery compartment. At the same time, there is no need for a battery management system, a safety monitoring system, a car charger, and a plug socket. As long as the electric vehicle has a motor drive system and speed control controller, the cost of electric vehicles will not be higher than that of fuel vehicles in the same configuration.

Compared to the public's familiar lead-acid batteries and lithium batteries, electric vehicles use zinc air batteries, and users do not have to consider replacing a group of power batteries after a few years. In addition, zinc air batteries do not cause explosion accidents. They are stable chemical power sources. Just stop supplying air and oxygen, and it will not react without discharging. At the same time, it is solid and will not leak electrolyte and will not cause harm to roads and pedestrians.

The page contains the contents of the machine translation.