New energy vehicle charging cable column

China [CN]

As new energy vehicles enter a new stage of development, the industry will continue to strengthen the promotion and use of new energy electric vehicles in the market, policies, and other aspects, and will further enhance the structural transformation of the traditional fuel vehicle industry. Along with the further popularization of charging piles for new energy electric vehicles, charging pile cables have also become the norm of social attention.

Charging pile cables include DC charging cables and AC charging cables, both of which have the following characteristics:

Firstly, the systems used are different. DC cables are used in rectified DC transmission systems, while AC cables are commonly used in power systems with power frequency (domestic 50Hz).

Secondly, compared to AC cables, DC cables have less power loss during transmission. The power loss of DC cables is mainly caused by the DC resistance loss of conductors, with a small portion of insulation loss (the magnitude depends on the magnitude of current fluctuations after rectification); While the AC resistance of low-voltage AC cables is slightly larger than the DC resistance, it is obvious for high-voltage cables, mainly due to the proximity effect and skin effect, which account for a large proportion of insulation resistance losses, mainly due to the impedance generated by capacitance and inductance.

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