The application of new energy ships is one of the important ways to solve ship pollution. Marine lithium battery charging technology is one of the bottlenecks restricting the development and application of new energy ships. Through the analysis of the current lithium battery charging technology, combined with the characteristics of ship operation and maintenance, this paper analyzes and summarizes the lithium battery charging technology suitable for the ship industry, proposes a ship-borne AC charger scheme, and provides a detailed analysis of the ship-borne AC charger scheme. Carry out research. The research results show that the developed marine battery charging system can meet the use of new energy ships in the existing dock and ship mooring state, and the scheme is reliable and practical.
The charging technology of ship lithium battery pack is the key technology restricting the development of new energy ships powered by lithium batteries. The design and research of the marine lithium battery charging system involves the application of power electronic converter technology, intelligent monitoring technology, wireless radio frequency technology and bus technology. The planning and application of ship charging technology is different from the planning and application of vehicle charging piles due to port restrictions and shore power issues. Using the advance marine battery pack as the power source of the ship, when the voltage is too low, electric energy must be supplemented, otherwise the performance and life of the lithium battery pack will be greatly affected, and irreversible damage will be caused.
Combined with the actual operation of the ship, only reasonable and feasible solutions can be selected to adapt to the application of ship lithium batteries. Once the charging system is constructed and put into operation, it will not meet the actual needs of ship charging, which will cause great waste. The construction and operation of the advance marine battery charging system often has a great impact on the shore power or the power grid of the terminal. Requirements for ship charging and shore power use.
At present, due to the limitation of the charging system, the waters used by new energy ships are mainly inland waterways, and mainly for short-distance transportation. For example, the fixed route of the lake cruise ships and the fixed route of the inland bulk carrier, and the conditions of the fixed mooring dock are more suitable for the use of new energy ships. The ship-borne AC charging system is more suitable for the application of the newly developed new energy ships. Therefore, a shipboard AC charging system is proposed.
Carry out performance tests such as charging and interference according to relevant requirements. The test results show that the marine lithium battery charging system can meet the charging requirements of marine battery packs. Under the charging condition, the charging performance is stable, the power is automatically cut off when fully charged, and an audible and photoelectric alarm can be issued in the fault state according to the requirements of the classification society.
Through the analysis of the current lithium battery charging technology, the article analyzes and summarizes the lithium battery charging technology suitable for the ship industry, and proposes a shipborne AC charger scheme. In the aspect of the marine lithium battery AC charging system scheme, a comprehensive solution is proposed to introduce AC power from shore power or dock to charge the marine lithium battery, and through the test verification, the marine battery charging system meets the requirements of the relevant regulations and guidelines, and meets the new requirements of the current stage. Energy ship charging needs.