There are two routes for fast charging technology, one is high current fast charging technology, and the other is high voltage fast charging technology. High current fast charge technology is mainly used by Tesla, this technology is more difficult, it belongs to the parallel charging mode, the various parts of the battery are partitioned and charged at the same time, the circuit requirements are high, of course, safety is also high.
High-voltage fast charging technology is widely used by auto companies other than Tesla, this technology is less difficult, but its heat generation is larger, auto companies for the vehicle's power battery heat dissipation technology to be fully prepared, but after so many years of development, high-voltage fast charging technology is also increasingly mature, safety has been greatly improved.
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Whether it is high current fast charge technology or high voltage fast charge technology is continuously upgraded, Tesla's V2 supercharge pile is 150kW, V3 supercharge pile is increased to 250kW, and high voltage fast charge technology is currently mainstream 400V, but some manufacturers have adopted 800V. The benefits of the upgrade of fast charging technology are undoubtedly very obvious, that is, the charging time of the owner is getting shorter and shorter.
However, these different technical routes and technical differences have brought trouble to owners, they are difficult to find a matching charging pile in daily use, and the rapid upgrade of technology has also led to the depreciation of the existing owners of the vehicle, and the earlier the depreciation of the vehicle, because the early vehicles used by the fast charging technology is more backward.