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Why India need to make Combined Charging System (CCS2) it's standard for EVs

You take your ICE car to a petrol station. Whatever brand of petrol you are trying to buy, the nozzle fits your tank. Whether you buy your car from Tata, Mahindra, Maruti or one of the exports, it still manages to fit your tank. The reason for this is the oil industry agreed on a standard design and diameter size for the nozzles.


When it comes to EV, because they are relatively new to the market than the firmly established fossil fuel industry, there is a fight for the right standard to be used on cars or the one govt would like to regulate. There are several standards all fighting for their right to be the one.


The war of the plugs

Let’s have a look at some of the common regions of the world and why I think CCS is a standard to depend on for the future.


As you can see from the image, the Japanese and Chinese would require 2 different charge ports to support AC charging at home and DC Fast charging when out and about. This means you require 2 charge ports on the car.


For reference here are the Nissan Leaf’s charge ports. One for the DC fast charging CHAdeMO and the other a Type 1.


Here’s one with Type 2 instead of Type 1, probably because it was built for a different region.


For the manufacturer, this leads to added complexity in their manufacturing and supply processes to support multiple standards.


Here is the Tesla China Model 3 with 2 ports to support the local government regulated GB/T and the Type-2 standard for the Tesla Super Charger and home charging.



We can see that just from the design standpoint, the CCS(Combined Charging System - the name says it all) is a well thought of approach into standard design. Why do you need 2 separate plugs for AC and DC charging, why not have 1 design that can do the handshake and communications on the common pins and use the AC probes or the DC probes depending on the outcome of the handshake.


Here’s a Kona with a CCS2 port.



The upper half can be used with a Type 2 connector for AC charging upto 22kWh and the lower half is for the fast charging DC that in theory can support upto 350kWh depending on the vehicle side of things.


It takes half the space as adding 2 ports and if the vehicle designers think hard enough, it can even find it possible to hide behind a tail light as in the Model 3.