![]() | #196 | |
BHPian ![]() Join Date: Sep 2014 Location: Mumbai
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| ![]() I would like to differ on this taking analogy of feature phones vs smart phones. With feature phones, charging once every 4-5 days was the norm while smartphones positively need to be charged every night. Yet, nobody complained that smartphones need to have large battery life. In fact terrible battery life of phone spawned a totally new market of power banks, battery cases and so on. In restaurants, it is not uncommon to find mobile charging points right on tables, something which would have surprised people a decade ago. Quote:
Further, since EVs are not mainstream yet, we don't know what kind of innovations will take place. One option is to have supercapacitor banks as charging infrastructure. These supercapacitors can charge slowly and then dump their charge in a flash to charge the battery. Just like we have varieties of petrol/diesel, there may be varieties of chargers depending on how fast they charge on line of Tesla superchargers. | |
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![]() | #197 | |
BHPian Join Date: Apr 2017 Location: San Jose, CA
Posts: 112
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Range anxiety is still very common in the land of 100kW Teslas and 310 mile Chevy Bolts. Charging will always be in the back of the mind of owners. Sure you can charge your car for the time you have dinner (could be 45 min or 2 hrs). But depending on how the BMS (battery management system) handles the voltage sag, you may end up with less power before you arrived. Vehicles that use packet cells (Li-Po) which are in the Nissan Leaf, Chevy Bolt, E2O can endup with that voltage sag issue. There have been a few times with both my colleagues EV cars and motorcycles they throw the vehicle charge (Usually in the states its 240V and a continuous 20 to 30kW) and the pack BMS takes a bit to both balance the whole battery and also continuously provide charge. In order to deal with supercaps, you need a battery pack that can handle much more than a 1C rating which is at roughly 1Ah (Amp hour). If packs get bigger that Ah curve gets really tough to handle. Not many packs out there come into that over 1C rating. | |
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![]() | #198 |
Distinguished - BHPian ![]() ![]() | ![]() Plug-In Electric Car Sales data (Jan - Nov-17). - Car Sales Hit New All-Time Record – 141,000 in Nov 2017 - The year hasn’t ended yet, but sales already exceed one million (≈1,039,000) - China's BAIC EC-Series is the topper while Tesla Model S and Toyota Prius Prime take 2nd and 3rd followed by the Nissan LEAF and the Tesla Model X. - Chinese companies – BAIC (17,812) and BYD (12,869) make big splash. The only other company above 10,000 in November was BMW (10,873) - BYD is in line to be #1 in 2017 ( assuming Dec sales of Tesla is average) - Volkswagen is back in the Top 10, replacing Renault. ![]() ![]() ![]() Source Last edited by volkman10 : 30th December 2017 at 18:20. |
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![]() | #199 |
BHPian ![]() Join Date: Apr 2016 Location: Hyderabad
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| ![]() Below chart has the battery efficiency of EVs in different temperatures. EVs are very efficient between 10 to 38 degrees Celsius. This does not have temperatures above 38 degrees as this is from USA. |
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![]() | #200 |
Newbie Join Date: Jan 2008 Location: Bangalore
Posts: 14
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| ![]() Came across this article and their business model sounds too good to be true ![]() 1. People with good credit will be able to walk in a dealership swipe their credit card for Rs 600 and drive out with the IoT enabled car and Pay per day after that 2. Total Cost of Ownership model where you can expect getting an electric car in your home by paying just 6 to 8 rupees per km and no other hidden cost and zero down payments. https://economictimes.indiatimes.com...w/62376651.cms Their FB page: https://www.facebook.com/pg/RT90EV |
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![]() | #201 |
BHPian ![]() Join Date: Apr 2016 Location: Hyderabad
Posts: 617
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| ![]() KIA showed their Niro EV concept at the CES yesterday. While its still a concept, KIA announced that it will go into production and sale later this year. Concept is funky but expect the production version to be toned down. Specs: 64 kWh battery, 150 KW electric motor, 238 miles (383 KMs) of range. https://www.cnet.com/roadshow/news/k...-electric-car/ Last edited by sri_tesla : 9th January 2018 at 13:42. |
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![]() | #202 |
BHPian ![]() Join Date: Sep 2008 Location: Hyderabad
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| ![]() The push from the governments across the globe seems to have set the ball rolling. Automotive majors are planning nearly $90 billion investments in EV landscape with Volkswagen group having the largest pie of around $40 billion. Of course these are just investments committed till now and can grow if they see the market for EV's growing. https://in.reuters.com/article/autos...-idINKBN1F505K |
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![]() | #203 | |
Distinguished - BHPian ![]() ![]() | ![]() Samsung SDI Battery Tech On Display At NAIAS – 600 km Range, 20-Minute Charge! Quote:
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![]() | #204 | ||
BHPian ![]() Join Date: Sep 2008 Location: Hyderabad
Posts: 205
Thanked: 244 Times
| ![]() Nature always surprises with its secrets and sometimes it seems we haven't even scratched the surface yet. In a recent development, researchers have studied a butterfly and how it absorbs sunlight and used the same in solar cells, thereby enhancing their light absorption rate. Quote:
And in another field two researchers are toying with water (a saline solution) for cheaper and safer battery technology, though not as effective as Li-ion yet. Quote:
Last edited by vamsi.kona : 18th January 2018 at 12:54. | ||
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![]() | #205 |
BHPian Join Date: Oct 2007 Location: Bangalore
Posts: 552
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| ![]() Any benefits announced for EVs in 2018 budget? |
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![]() | #206 |
BHPian Join Date: Oct 2008 Location: Bhopal
Posts: 295
Thanked: 365 Times
| ![]() Hi! everyone The 2018 Auto Expo has one thing common for almost all the manufacturers i.e Electric motor driven propulsion. I was wondering if some one could shed some light on the current technology of motors used in cars and bus with respect to following points 1. KW ratings and RPM 2. Synchronous or induction 3. cooling mechanism Air cooled / water jacket etc 4. Approximate weights 5. Controls 6. Degree of protection IPXX 7. Mounting arrangement 8. Shock withstand capabilities 9. Motor life 10. Efficiency Any information will be helpful. Thanks |
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![]() | #207 | ||
Distinguished - BHPian ![]() ![]() | ![]() Just the beginning of the EV era, Lithium and Cobalt's future supply already in question! Tesla's scramble for lithium : Quote:
BMW is looking ahead and aims to secure a 10-year supply of cobalt and lithium for EV batteries as part of a new strategy. Quote:
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![]() | #208 | |
BHPian ![]() Join Date: Sep 2014 Location: Mumbai
Posts: 775
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| ![]() This is a gamechanger!! Maharashtra has finally come up with a substantial electric vehicle policy (link) offering significant benefits to the customers. The document is in marathi though. Below is the translation of the policy in english from a new article: https://swarajyamag.com/insta/ahead-...or-maharashtra Excerpt: Quote:
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![]() | #209 | |
Senior - BHPian Join Date: Aug 2007 Location: BLR
Posts: 1,040
Thanked: 447 Times
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![]() | #210 |
Distinguished - BHPian ![]() ![]() | ![]() Pure electric cars demand increased by 46% in Europe to 132,000 units in 2017. Tesla has almost beaten Renault ! ![]() |
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