electric car fast charging

Electric car fast charging is an efficient way to replenish the power of electric vehicles. It refers to using high-power direct current to charge the power battery of electric vehicles, which can charge the battery to Higher levels (such as 50% to 100%). This charging method significantly shortens the charging time of electric vehicles and improves convenience of use.

Electric car fast charging equipment and facilities

DC charger: Fast charging mainly relies on DC charger, which can convert the alternating current of the power grid into direct current and directly charge the power battery of the electric vehicle. The charging power of DC chargers is generally above 30kW, and the charging power of super charging stations is above 350kW.

Charging interface and charging gun: The fast charging interface and charging gun of electric vehicles have specific standards and specifications to ensure compatibility and safety with DC charging piles.

The following are the basic parameters of super charging station 480-720kW products:

Rated power: 480-720kW

Main cabinet input voltage: AC380V±15%

Main cabinet utput voltage: DC200-1000V

Main cabinet output current: 0-2400A

Terminal interface: 7-inch color touch screen

Terminal input voltage: AC220V±15%

Terminal output voltage: DC200-1000V

Terminal output: 250/600A

Terminal quantity: 6

Number of charging guns: 12

Charging gun cable length: 5m

Temperature: -25 to 55°C

Protection: IP 54

1. Principle of fast charging

The principle of fast charging is to deliver a large current to the vehicle's power battery within a specific time. The DC charging pile adopts a three-phase four-wire system for power supply, which can provide sufficient power. The output voltage and current have a wide adjustment range, which can meet the requirements of fast charging. During the charging process, the charging pile communicates with the electric vehicle's battery management system (BMS) through the charging interface. According to the current battery status, an intelligent control algorithm is used to adjust the charging current pulse width, intermittent time, and discharge current pulse in stages. Modulate the appropriate current and voltage to complete charging.

2. Advantages and limitations of fast charging

Advantages:

Significantly shorten the charging time and improve the convenience of using electric vehicles.

Suitable for long-distance travel or situations where you need to recharge your batteries urgently.

limitation:

There is a certain amount of wear and tear on the battery, and frequent use may affect battery life.

Charging costs are relatively high because fast charging is powerful and consumes a lot of electricity.

The construction and maintenance costs of fast charging facilities are also higher.

3. Development Trend of Fast Charging

Technological progress: As battery technology and charging technology continue to advance, the efficiency and safety of fast charging will be further improved.

Facility construction: The government and enterprises will increase the construction of fast charging facilities and improve the coverage and convenience of fast charging facilities.

Policy promotion: The government will introduce more policies and measures to support the development of fast charging technology and promote the rapid development of the electric vehicle industry.

4. Electric car fast charging product project case display

Q1: Are you trading company or manufacturer?

A: We are a professional electric car charger manufacturer and source factory.

Q2: what is the lead time?

A: Usually, 15-20 working days to produce.

Q3: Can we ask you to print our logo into chargers? Can the color of the plug and wire be customized according to our requirements?

A: Yes. We support OEM/ODM production.

Q4: How about your product quality? What should I do if something goes wrong?

A: First of all, we sell our products for many years, and we have a professional engineering team in this field. Moreover, our products have been strictly inspected and repeatedly tested before leaving the factory, and the good and good rate of the varieties has reached 99.98%. Finally, we have service providers in some areas, please contact us for more information

Q5: What is your quality control system?

A: Complete all incoming material inspection, process inspection, and final inspection; 30 test procedures will be done before the goods leave the factory, and charging test videos will be sent; products have CE, ROHS, FCC, UL, KC certification.

Q6: Can I install the EV charger by myself?

A: Yes, but we suggest the user contact a professional electrician for installation to avoid potential safety hazards.

Q7：Why my charging power is lower than the specification?e?

A: Because during the charging session, a few factors will influence the output. Here is some potential reason:

①The BMS(Battery management system) of the car controls the charging session.

②The Max allowed current was set and limited through your APP.

For more details, please query us at sales@hjlcharger.com

Q8: How much time is required to fully charge my car using this charger?

A: The charging speed is determined by three factors working in conjunction: the On Board Charging (OBC) System, the maximum current allowed by the charging cable, and the EVSE. As an illustration, if the EV's maximum allowed power is 30KW and the battery capacity is 60KWh, it would take approximately 2 hours to charge the battery fully.

Q9: What is dynamic load balancing and why do I need that?

A: Dynamic load balancing is a technique that distributes the electrical load across multiple charging stations based on real-time demand. This helps prevent the electrical grid's overload and ensures that each charging station receives appropriate power.

Dynamic load balancing technology can help distribute the available power among multiple EV chargers in real-time, optimizing available power and reducing the risk of overloading the grid. This can help prevent power outages and reduce the need for costly grid upgrades.

Additionally, dynamic load Balancing can help reduce charging times and improve the overall charging experience for EV drivers, making it a valuable feature for both residential and commercial charging applications.