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AR The successful integration of electric vehicles (EVs) into our lives relies heavily on efficient and accessible charging infrastructure. Among the plethora of charging options available, two prominent contenders are alternating Current (AC) chargers and Direct Current (DC) chargers. To aid EV owners and enthusiasts in making informed decisions, it is crucial to comprehend the disparities between these charging technologies. In this article, we embark on a journey to explore the distinctive features and benefits of AC and DC charging stations, presented in a clear and accessible manner.
Difference 1: Power Conversion Location
Electric vehicles (EVs) can be charged using two types of electricity transmitters: Alternating Current (AC) chargers and Direct Current (DC) chargers. While the electricity grid supplies AC power, an EV battery only accepts DC power. The primary difference between AC and DC charging lies in the location of power conversion, either external or internal to the car.
DC chargers, with an onboard converter, are usually larger and charge the battery faster than AC chargers. In contrast, AC charging begins the conversion process within the car itself. Electric vehicles come equipped with an ”onboard charger” that converts AC power to DC, charging the battery after conversion
Difference 2: Home Charging with AC Chargers
Although theoretically possible, installing a DC charger at home is impractical due to several factors: DC chargers are significantly more expensive than AC chargers. They require more space and complex components, such as active cooling. A high-power connection to the grid is necessary. Constant use of DC charging is not recommended, making AC chargers a more suitable choice for home installation. DC charging stations are more commonly found along highways for long-distance travel.
Difference 3: Mobile Charging with AC
AC chargers are mobile due to two key reasons:
DC chargers contain heavy power converters, making them unsuitable for travel.
DC chargers require inputs of 480+ volts, which are not readily available in many places. Public EV charging stations mainly offer AC charging, while DC chargers are commonly located along highways.
Difference 4: DC Charging is Faster than AC Charging
The presence of a converter inside DC chargers allows them to bypass the onboard charger of the EV, leading to faster charging times. Charging with direct current can be ten or more times faster than charging with alternating current.
Difference 5: AC vs DC Power – Different Charging Curve
AC charging delivers a constant power level to the EV due to the limited power capacity of the onboard charger. DC charging exhibits a degrading charging curve, starting with a faster flow of energy and gradually reducing as the battery approaches its maximum capacity.
Difference 6: Charging and Battery Health
Continuous use of DC chargers may impair battery performance and durability. Studies have shown that charging at high speeds generates excessive heat and ripple effects, impacting battery degradation. EVs that utilize DC fast charging more than three times a month in hot climates experience 10% more battery degradation than those primarily using AC chargers.
Difference 7: AC Charging is Cheaper than DC Charging
AC chargers are more cost-effective compared to DC chargers. The latter comes with higher installation and grid connection costs. DC charging is ideal for time-critical situations due to its speed, while AC charging takes longer but costs less. Home charging remains the most economical option, making investing in a personal charging station a budget-friendly solution.
Conclusion
Understanding the distinctions between photovoltaic (PV) AC charging and DC charging is pivotal for advancing electric vehicle (EV) charging infrastructure and promoting sustainable transportation solutions. In this regard, EVB Charging Station stands out with its exceptional performance.
For home and portable charging needs, the EVB Smart OCPP 7.4-22kW series chargers cater to EV charging requirements while minimizing any impact on household power consumption. Leveraging intelligent load-balancing technology, these chargers intelligently monitor and control home power usage, ensuring a stable and balanced power supply. User-friendly operation allows effortless EV charging, while remote control and reservation features provide charging flexibility without time or location constraints.
Safety is prioritized with the IP66/ 55 high protection rating, effectively safeguarding against harsh environmental influences, and providing users with the utmost security. In summary, the EVB Smart OCPP 7.4-22kW series chargers are intelligent, convenient, efficient, and secure charging solutions, elevating user lifestyle and travel experiences.
For commercial applications requiring multiple charging points, such as city public areas, residential districts, community parking lots, EV rental stations, and fleet parking lots, the EVB AC Commercial Chargers offer power options ranging from 7.4KW to 22KW to meet diverse commercial needs. Compliant with OCPP 1.6 J standards, communication with the central system becomes a breeze.
EVB commercial chargers come equipped with a comprehensive solution, featuring APP and cloud platform, allowing users to manage customer accounts, monitor billing data, track revenues, and handle exceptions in real-time.
Additionally, customizable panel colors cater to various commercial aesthetics. In scenarios like long-distance travel, highways, logistics parks, parking lots, and short-duration applications such as gas stations, the EVB DC Commercial Chargers shine with their rapid charging and high-efficiency capabilities. Adopting the OCPP 1.6 J protocol, these chargers can be seamlessly integrated with the EVB cloud platform and companion APP, simplifying DC charger management and offering convenient access to charging data.
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