Unveiling the Dynamics of Slow and Fast Charging for New Energy Vehicles

In the era of booming new energy vehicles, charging infrastructure has emerged as the remedy for range anxiety among electric vehicle owners. Beyond the common perception of charging piles merely as a means of "charging," this article aims to delve into the intricacies of charging pile knowledge.

Charging piles offer two primary methods based on charging type: slow charging and fast charging.

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Slow charging operates on AC input and AC output, converting DC power to charge the vehicle battery through the car's internal rectifier module. Given the relatively modest power of vehicle chargers, typically 7kW or 11kW, slow charging is apt for numerous household cars. Owners can conveniently opt for off-peak charging to cut costs. These chargers are typically found in residential parking lots.

Fast charging, on the other hand, involves charging piles with power exceeding 60kW. With AC input and DC output, fast charging directly charges the vehicle battery. The DC charging piles from Diantou Quick Charge boast outputs ranging from 30kW to 360kW or even higher, facilitating rapid charging and reducing vehicle downtime. Fast charging stations are commonly situated near highways and are utilized in various operational models.

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Different electric vehicles have distinct maximum allowable charging current limits and battery capacities, resulting in varying full charging durations. Slow charging typically takes 6-8 hours to complete, while fast charging achieves 80% battery capacity in just 30-40 minutes.

Crucially, it's essential to recognize that higher power doesn't necessarily equate to faster charging. The charging speed depends on the compatibility between the electric vehicle and the charging pile, as the electric vehicle's Battery Management System (BMS) controls the charging power. Optimal charging occurs when the charging pile power matches or exceeds that of the electric vehicle.

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Charging piles are further categorized based on installation methods, namely vertical, wall-mounted, and split types.

Vertical charging piles, designed for outdoor parking spaces, don't require wall installation. Wall-mounted charging piles are affixed to walls, suitable for indoor and underground parking spaces. Split charging piles, primarily used for DC charging, automatically adjust the charging gun power based on the vehicle and conditions, catering to diverse vehicle types in centralized management scenarios.