With the desire to produce “Green Energy" as much as possible to support our climate, particularly in decreasing CO2 emissions, most people are aware of electric vehicles. As electric vehicles become increasingly popular throughout the world, so need of basic EV charging stations rise significantly, particularly in larger cities.
Wallbox EV chargers and public charging stations are best methods for powering the electric vehicles. In this article we mention different methods for charging an EV and the way EVcome Wallbox EV charger integrates these technologies.
Different Methods of Charging Electric Vehicles.
1. AC Conductive charging or slow charging:
Conduction charging is the most widely used method for charging an EV, which distributes power from the power grid to the electric car through a wire.
The EV charger can directly connect to the BMS (Battery Management System), and it does not require any extra electrical converters to function. As a result, efficiency improves while costs decrease. AC electricity must be switched to DC power in the vehicle, and the energy production for charging with AC is limited because of the weight and dimension limits of the on-board charger.
2. DC Conductive charging or Fast charging:
Fast charging is also called off-board charging in which a DC charger is used to charge the basic EV battery. It makes use of particular DC electric vehicle power devices to give electricity to EVs in public places via suitable off-board chargers.
It may be created by using a fast or slow charging rate, and its overall weight and dimensions are not constrained. A high-power Wallbox DC charger needs a very short charging time.
Conductive charging offers a V2G technology, decreases network loss, keeps voltage threshold, avoids power line overflowing, and may offer reactive energy restoration via the battery inside the EV.
Vehicle-to-grid (V2G) technology:
V2G is a technique that allows power from an electric vehicle battery to be returned to the electric grid. A battery pack could be charged and drained using vehicle-to-grid systems depending on indications like near power production or consumption. V2G system is defined as a solution that provides controlled, bidirectional electrical power between the EV and the power grid.
Bi-directional functioning is getting more significant as power retained within car batteries is considered for use in powering the home during periods when power usage is costly. All of the configurations depicted will enable this style of function if certain diodes are substituted with switches.
3. Static Inductive charging:
Inductive charging is based on the usage of 2 electromagnetically connected coils. The main/primary coil is installed on the roadway in a pad-like structure that is connected to the power grid. The secondary coil is installed either on the top or bottom of EV. Inside the off-board charging station, 50Hz AC energy from the electrical network is transformed to DC and then switched to high-frequency AC power. Electromagnetic induction subsequently transfers this power to the electric vehicle side. The EV coils transform this high-frequency AC electricity again to DC so that the onboard charger may recharge the EV.
Benefits and Limitations:
· Appropriate for self-driving electric vehicles
· Low efficiency as compared to conductive charging
· Limited weight and space
4. Dynamic Inductive charging:
Dynamic charging is another method of wirelessly powering an EV. The coils attached to the transmission lines that are used to supply current are embedded in the ground. Coils produce a field of electromagnetic radiation, which is taken up by vehicles moving across them and turned into current, which is then used to power electric vehicles.
Although inductive power transfer is often fragile, and for optimal power distribution, the air distance among transmitter and receiver coils must be in range of 20 and 100 cm.
Benefits and Limitations:
· Compact battery and low depth of discharge.
· Minimum charging time
· High investment
· Coil misalignment and structural variations
· Not usable for all types of vehicles
5. Battery Swap technology:
The battery swapping technique is also called as "Battery Exchange," and it relies on paying a monthly recurring fee for the power source (battery) to the owner. The battery swapping station slow charging mechanism contributes to its lifespan extension.
It operates by removing the drained battery and replace it with a fully charged battery. The entire procedure is moving to a battery swapping facility, an autonomous system that places the car, exchanges out the existing battery, and substitutes a new battery that is fully charged.
The exhausted batteries are being recharged at the stations and will be deployed later. Battery swapping necessitates a flawless method for estimating the batteries SOH (state of health), checking for usage patterns, and ensuring that only authorised cars and charging points are allowed to charge.
Benefits and Limitations:
· Fast and easy charge like conventional vehicles.
· No range anxiety
· High monthly recurring fee is the main challenge for this charging method
· The demand for standardized battery interfaces among numerous car makers.
6. Mobile Charging:
The optimum condition for EV batteries is to power them while driving, so this method called as mobile charging. The mobile charging robot can autonomously locate the charging outlet of the vehicle in the parking area and charge it. That idea of automated charging via mobile charging is basically a conduction charging technique.
The emergence of mobile charging robots gives a new approach for increasing recharging parking area. Because of the collaboration among power station of batteries and mobile charging, the charging station can use a comparatively limited amount of dedicated parking lot designs to fulfil the demands of automobile owners who want quick and significant amounts of replenish. Additional cars can be placed in public locations, and the mobile powering robot will aggressively seek automobiles in order to more effectively utilise charging and park supplies.
Make sure you have the EVcome Charging Mobile App with you when you depart from home. Easily find chargers in your neighbourhood, if a charging network is suitable with the battery of your EV, the time it will take to fully charge your car, and if the charger is currently in the working condition.
Overnight depot charging and pantograph charging methods are used for big size batteries and fast charging demand buses and vehicles.
7. Overnight Depot charging:
This charging method used for both slow and fast charging. It is often positioned at the end of the power supply and is employed for nighttime charging. As a result of the minimal charging influence on the power grid, delayed charging is the most advantageous alternative.
8. Pantograph charging:
This particular kind of charging serves as one of the charging alternatives. This charging system is utilised for EVs with bigger battery capacities and power requirements, including buses and heavy vehicles. This charging strategy requires fewer expenditures in the bus battery, lowering the bus capital cost; nevertheless, the charging network price rises. Pantograph charging is further divided into two categories:
I. Top-down Pantograph:
As the power source is located on the rooftop of the bus stop, it is frequently referred to as an off-board top-down pantograph. This technology produces greater power direct current, which has previously been proven in many countries (Singapore, Germany, and the United States).
II. Bottom-up Pantograph:
This technique of charging is also known as on-board bottom-up pantograph and appropriate for instances when the charging device has been mounted in the bus.
Wallbox EV charger:
This charger provides EV users and businesses with a range of charging options. A diverse product offering guarantees that one can find options for both private and public charging, as well as different alternatives tailored to the industry and business need. The Wallbox EV charger are developed to function properly with all electric vehicles, including Tesla, BMW, Volkswagen, SAIC, and many more.
EVcome goal is to make electric vehicle charging cheaper and easier throughout the world by building a network of charging stations and innovative technology that can be easily installed in any area. EVcome is ready 24/7 to answer any inquiries if either client or customer requires assistance or is still unsure about just how their electric vehicle charging stations work.
But for charging at home, the EVCOME Wall Box DC Ev Charger is a perfect choice. This highly adaptable and straightforward charging station is built to make charging at home as easy as possible. It feels more comfortable to wake up to a fully charged electric vehicle every day. Reliable products provide the required speed and convenience to make electric vehicle ownership more practical and enjoyable. Why wait longer to switch to electric?
EVCOME’s main products contain EV charging stations, portable EV chargers, EV chargers cables, EV charging connectors, etc. All our products are certificated for each market, such as CE, TUV, CSA, FCC, UL, ROHS, etc, Also，EVCOME are able to do customization according to different customers demands， and we have been exported to EU,Middle East,South East Asia area etc..,