Battery charging mode of new energy vehicles

　　(1) Conventional charging mode: This type of charging mode uses the traditional mode of constant voltage and constant current to charge the car battery. In this way, the battery is charged with a relatively low charging current, which is about 15A. Take the 120Ah battery for example, the charging should last at least 8 hours. This charging mode is a common charging mode for electric vehicles at present, with low cost and stable operation, but the disadvantage is that the charging rate is slow.

　　(2) Fast charging mode: charge the battery with a high charging current of 150~400A in a short time. Compared with the conventional charging mode, its manufacturing and installation costs are higher. The important purpose is to fully charge the electric vehicle in a short time. Although the charging speed is accelerated, the battery's heat generation is increased rapidly during the rapid charging process, and the battery's internal chemical reaction is fierce, so the battery's life will be affected to a certain extent, so that the later use cost of electric vehicles will be increased significantly.

　　(3) Wireless charging mode: This is a relatively new charging mode. Its concept is similar to the principle of mobile phones. It is a way to convert electric energy into a special laser or microwave beam that meets the requirements of current technical standards, and install a receiver at a certain position of the car as the charging access port.

　　(4) Battery replacement method: replace the battery with a fully charged battery or battery pack after the battery has run out of energy. Generally, in this mode, the battery is owned by the brand dealer and manufacturer, and the electric vehicle user only needs to rent the battery.

　　(5) Mobile charging.

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