[RahulNagaraj]

According to media reports, Porsche is expecting to be able to produce electric vehicles with 1,300 km of range in the future.

Porsche, which currently uses graphite as an active anode, is said to be developing silicon anodes, which claim to offer up to 10 times more storage capacity and allow its cells to be capable of charging from 5% to 80% in just 15 minutes. However, the company also notes that though the silicon particles can expand by 300% when absorbing lithium, it does impair the service life of the battery. Hence, Porsche is working on anodes with 80% silicon while also trying to increase the proportion of nickel in the cathode - offering higher charging capabilities.



Professor Maximilian Fichtner, head of the Energy Storage Systems research unit at Karlsruhe Institute of Technology, stated that in the medium term, the combination of the new anode chemistry and the dense cell packaging could allow EVs to offer driving ranges of up to 1,300 km (807 miles). Porsche is investing heavily in solid-state batteries, whose researchers claim will have 50% more energy density and reduce charging times significantly.

Reports also state that faster charging times will necessitate the need for more powerful charging stations. Also, the sockets will need active cooling to allow 500 kW charging to be conducted reliably.

Source: CarScoops

Link to Team-BHP news

[GTO]

As I've posted many times before, with the rapid advancement in battery tech, EV driving range will soon exceed customer expectations...and range anxiety will be a thing of the past.

In fact, after 5 years, we will see customers opting for the lower battery variant to save money. Examples (just rough numbers):

400-km EV crossover = 20 lakhs

500-km variant of the same EV = 22 lakhs

700-km variant = 25 lakhs

We've already seen this to some extent with the Nexon EV & EV Max variants.

Customers will realise 400 - 500 km is enough for 99% of their driving needs. Charging infrastructure would have improved. People will want to save money & not lug the additional weight around. Heavier batteries bring performance deficits = one of the reasons that the Nexon EV Max isn't much faster than the standard Nexon EV.

[speedmiester]

A competent EV with a range of 500Kms range under varying conditions is more than sufficient for majority of the requirement.
How often does one drive more than 1000kms in a day will answer the range question.

Longer range makes sense once the battery tech evolves and we could have high density batteries without affecting weight.

[padmrajravi]

The real problem is the charging time, not the range. 250 KMs of real-world range is enough, if that 250 KMs can be regained in 5-10 mins like in an ICE car. But that problem is a harder problem to solve with smaller batteries because charging performance goes down after specific charging percentages. So then, the next best thing to do is to improve the range as much as possible so that, even charging to 50% gives one reasonable range. For eg, A 1000 km battery can regain 250-500 kms of range in a short time, but filling up the entire 1000 km will take time since the charging speed will go down considerably after specific charging percentages. So a 1000 km battery probably never needs to get fully charged. One can just keep charging to 25% or 50% with in a short time and still do very long trips unlike a 250 kms battery which will take longer time to regain the full 250kms.

[electric_eel]

Mod note: Please user Report post to notify Mod team, also do Trim large quotes for replies. Helps with readability for mobile users. Thanks.

Originally Posted by padmrajravi

The real problem is the charging time, not the range. 250 KMs of real-world range is enough, if that 250 KMs can be regained in 5-10 mins like in an ICE car.
=====
One can just keep charging to 25% or 50% with in a short time and still do very long trips unlike a 250 kms battery which will take longer time to regain the full 250kms.

May I add a few technical factor that makes a difference to charging time

1. The voltage of operation of the High voltage battery and drive train system
As I understand it Nexon has an operational voltage of about 300 V (or somewhere there about) where as a system like Kia ev6 probably operates at a higher voltage (800V) and the higher voltage of the latter means at the same current it is able to both deliver (to the drive train) as well as charge (from fast chargers) higher power. So if we double the operational voltage and increase the battery pack size you can probably charge better.

2. The cell balancing process. Nexon has passive cell balancing is what I understand which makes it slower when the SoC reaches close to 85 %. On the other hand with a system with has active cell balancing one can go almost close to 100 % SoC with out reducing the power intake by much. The difference can be seen in the power characteristic of a car like BYD Atto vs Nexon EV during charging from a fast charger

(MODS: Please delete the previous post which was partially complete before my hand hit the submit button)

[Mustang_Boss]

The Major problems I see are:

- Indian climate is too hot to handle very fast charging capabilities. Europe and the west have modest to very cold climate and can facilitate fast charging. We need an Indianized solution and am expecting to see something from Tata/Mahindra.

- Dusty environment, which makes things complex for any cooling solutions implemented, if any. Even if its implemented, the cost will go up, which puts EV's in non affordable category, which they already have been in. Nexon is the best example.

- People and reckless usage. I see people parking their EV's outside in hot sun, for the whole day without ever caring a bit about the car. A little care is needed for EV's, especially with the parking. Some even just turn the AC on, without driving and just sit in the car.

We might not able able to address a few, but certainly we have to work on educating the customer more and ensure proper periodic maintenance is done on at least 99% of the cars.

[PreludeSH]

Originally Posted by Mustang_Boss

The Major problems I see are:

- Indian climate is too hot to handle very fast charging capabilities. Europe and the west have modest to very cold climate and can facilitate fast charging. We need an indianized solution and am expecting to see something from Tata/Mahindra.

- Dusty environment, which makes things complex for any cooling solutions implemented, if any. Even if its implemented, the cost will go up, which puts EV's in non affordable category, which they already have been in. Nexon is the best example.

- People and reckless usage. I see people parking their EV's outside in hot sun, for the whole day without ever caring a bit about the car. A little care is needed for EV's, especially with the parking. Some even just turn the AC on, without driving and just sit in the car.

We might not able able to address a few, but certainly we have to work on educating the customer more and ensure proper periodic maintenance is done on at least 99% of the cars.

Hot climate should not be an issue. And when you say IP67 or higher, you should have taken care of other issues !

Sensors should provide enough information for any pre-emptive action and should already be part of design.

[Mustang_Boss]

Originally Posted by PreludeSH

Hot climate should not be an issue. And when you say IP67 or higher, you should have taken care of other issues !

Sensors should provide enough information for any pre-emptive action and should already be part of design.

Boiling water which is at 40 Degrees will always take less time than boiling water which is at 10 degrees.

Similarly, You can always put more charge into a battery, which is at 10 degrees, than the one which is at 40 degrees, in the same amount of time. No?

The IP67 ratings makes the batteries sealed, which means, there is no cheaper way to vent out the hot air effectively & without maintenance? Like your IPhone, which stops charging, when its hot outside

[SKC-auto]

Originally Posted by Mustang_Boss

The IP67 ratings makes the batteries sealed, which means, there is no cheaper way to vent out the hot air effectively & without maintenance? Like your IPhone, which stops charging, when its hot outside

Batteries are air or liquid cooled just like ICE cars, dust should not be a problem as only coolant recirculates, the coolant enters the battery through an inlet pipe and exits through an outlet pipe.

[electric_eel]

Originally Posted by Mustang_Boss

Boiling water which is at 40 Degrees will always take less time than boiling water which is at 10 degrees.

Similarly, You can always put more charge into a battery, which is at 10 degrees, than the one which is at 40 degrees, in the same amount of time. No?

In fact LFPs perform badly at very cold temperature and Teslas go to insane lengths
to heat up their batteries in very cold climate (heating is not really a great idea for
BEVs where as it is free for ICEs). The Car care nut has a very informative video on it.

https://www.youtube.com/watch?v=7HC72p2gfuQ

So may be just maybe starting at 40 Deg might be better for the BEV than 10 deg (I Do not know)

[Mustang_Boss]

Originally Posted by SKC-auto

Batteries are air or liquid cooled just like ICE cars, dust should not be a problem as only coolant recirculates, the coolant enters the battery through an inlet pipe and exits through an outlet pipe.

True! but now, you have to add the radiator fan power consumption too. Batteries get hot during usage too. When just parked, The battery case reaches the environment temperature. That's it, and we are already around 40 degrees.

Originally Posted by electric_eel

In fact LFPs perform badly at very cold temperature and Teslas go to insane lengths
to heat up their batteries in very cold climate (heating is not really a great idea for

Too hot and Too cold is bad for Lithium chemistries.. the ideal temperature is between 14-28 degrees. The geographical problem is, most of India falls in the north of 28 degrees, where as at least 50% of the west and europe falls in this range.
Countries like Canada, where the temperatures reach negative, yes, teslas wont work long in such climates.