Electric vehicle charging innovations

Pop-up pavement chargers

London-based EV charging company Urban Electric Networks has developed the UEone on-street devices, which retract into the ground when not in use like bollards. Six pop-up chargers, offering fast charging measuring up to seven kilowatts (kW), were installed in Oxford in November 2019 as part of a trial and the company plans to begin commercial production in 2021.

Lamp-post charging

installs electric vehicle charging points on existing lamp posts

Electrified roads

The team behind the state-funded eRoadArlanda project in Sweden installed electric rails embedded within the tarmac of a 1.25-mile road network near Stockholm.

On Board Charger (OBC)

At the heart of any electric (EV) or plug-in hybrid (HEV) vehicle lays the high-voltage (200 to 450 VDC) battery and its associated charging system. The on-board charger (OBC) provides the means to recharge the battery from the AC mains either at home or from outlets found in private or public charging stations. An on-board charger (OBC) is used in an electric vehicle (EV) or hybrid electric vehicle (HEV) to charge the traction battery. The On-Board charger system described in the material below converts the AC input from the grid to a DC input which charges the battery. ADI helps simplfy the system design with a variety of signal conditioning solutions and integrated high voltage isolation offerings including Isolated gate drivers.

On-Board Chargers and Charging Stations

Before we step into charging stations it is important to understand what is present inside the EV and to which part the charger will be connected to. Most EVs today come with an On-Board charger (OBC) and the manufacturer also provides a Charger along with the vehicle. These chargers along with the on-board charger can be used by the customer to charge his EV from his house power outlet as soon as he/she gets it home. But these chargers are very basic and do not come with any advanced features and hence would normally take around 8 hours to charge a typical EV.

An AC charging Station as the name implies provides AC power form the grid to the EV which is then converted to DC using the On-board charger to charge the vehicle. These chargers are also called the Level 1 and Level 2 Chargers which is used in residential and commercial places.

Setting up an Electric Vehicle Charging Station in India

EVs getting quickly popular in India
Good thing is that Solar Powered EVSEs are slowly getting popular. Due to the size, efficiency and weight of solar panel it is not possible to have EV’s directly run by solar power.
Vehicle to Grid (V2G) system. Wherein the Battery Pack in a EV could act a Power source for household equipments. Today’s EVs come with a huge battery pack upto 100kWh or more making it an easy portable power house.
The good news: by 2025 over 100 new EVs are set to launch on the market. This step in the direction of improved urban air quality adds pressure to develop and implement the charging infrastructure required to accommodate additional EVs on the road. Finally, as battery manufacturers optimize their cost structures and economies of scale, EV battery costs are decreasing. The result: electric vehicles have never been more attractive to purchase.

Type 1 plug

The type 1 plug is a single-phase plug which allows for charging power levels of up to 7.4 kW (230 V, 32 A). The standard is mainly used in car models from the Asian region, and is rare in Europe, which is why there are very few public type 1 charging stations.

Type 2 plug

charging power levels of up to 22 kW are common, while charging power levels of up to 43 kW (400 V, 63 A, AC) can be used at public charging stations. Most public charging stations are equipped with a type 2 socket.

Combination Plugs

The CCS plug is an enhanced version of the type 2 plug, with two additional power contacts for the purposes of quick charging, and supports AC and DC charging power levels (alternating and direct current charging power levels) of up to 170 kW. In practice, the value is usually around 50 kW.

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