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The use of new energy lithium-ion batteries in electric ships

Author:Site Editor     Publish Time: 07-19-2021      Origin:Site

In most cases, the marine electric propulsion system is powered by an internal combustion engine driven generator set. Because the marine environment is complex and changeable, the load is changing. When the load deviates from the optimal load point, the fuel will not be burned sufficiently, the utilization rate of the fuel will be greatly reduced, and a large amount of nitrogen oxide and sulfur will be generated. Oxide, pollute the environment. Li-ion battery energy storage technology is one of the ways to deal with this problem.

There is great Zen in both economic and environmental perspectives. In addition, with the development of high-capacity lithium-ion batteries and supercapacitor technology, the price of energy storage devices will inevitably drop. The prospect of using energy storage units in marine electric propulsion systems is worth expecting.

Lithium batteries are widely used, and the era of electric ships is coming. Ship emissions are more serious. Electricity will deal with pollution problems on the one hand, and at the same time it will be more economical. There is a trend towards electric ships. It is estimated that the demand for lithium-ion batteries brought by electrification will be above 6.27Gwh in 2025.

The use of new energy lithium-ion batteries in electric ships

my country’s pollution control of ships is becoming more stringent. Prior to this, an important focus was on controlling fuel quality. Compared with automobiles, ship engine emission control levels and fuel quality are relatively low. Improving fuel quality is an important means of controlling emissions before.

The development of green ships is a general trend, and electric ships are a long-term solution. The demand for lithium-ion batteries for electric boats is as follows:

1. The use of electric boats focuses on short-distance transport vehicles, sightseeing boats, and ferry crossings in inland rivers and lakes;

2. The electrification of ships within 2000 tons is relatively simple, while the electrification of large-tonnage ships is difficult. Generally, large-tonnage ships are used for long-distance transportation, while small-tonnage ships are used for short-distance transportation;

3. Electricity is not applicable to scenarios such as ocean transportation, coastal transportation, and inter-provincial transportation;

4. In Neihu and Neihu, there are also many classified usage scenarios for ships, and we estimate that only 60% of them can be electrified.

As the high-power pure electric version becomes more and more feasible, the scope of use of electric ships will be further expanded. Based on safety and economy, lithium-ion batteries are suitable for electric ships in my country. Power lithium batteries and bMS battery management systems have developed rapidly in recent years. The power lithium battery products of many marine lithium-ion battery manufacturers have passed the test and detection, and obtained the my country Classification Society. Approval certificate. And the charging and discharging rate reaches 20C, and the ship has good power handling.

Under the dual use of environmental protection and economy, the demand for the introduction of electric ships has increased. According to market estimates, the demand for lithium-ion batteries brought about by the electrification of ships in my country is expected to enter a period of rapid rise starting this year, and it is expected to increase from 1.14Gwh this year to 6.27Gwh in 2025.

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