Jump to content
Create New...

David

Premium Subscriber
  • Posts

    35,401
  • Joined

  • Last visited

  • Days Won

    267

Everything posted by David

  1. Interesting movement in Tesla Stock and not a good one. Tesla Stock Just Made A Death Cross As Market Sentiments Shift (msn.com)
  2. Every automotive original equipment manufacturer (OEM) has their own platform, or they have signed an agreement with another OEM to use their EV platform. The following chart lists all of the current North American Automotive OEMs and the platform details that they have released. While there are a few oddball platform voltages such as the Toyota/Lexus/Subaru platform with a 355-volt system or the Lucid with a 924-volt system, the bulk of the OEM auto manufactures have gone with a 400-volt or 800-volt system. Many of these OEMs are already planning or have moved to an 800-volt platform such as Tesla with the production start of their Cybertruck that is based on an 800-volt system running a 48-volt electrical system compared to internal combustion engine (ICE) autos that run a 12-volt system to run electronics while burning gas or diesel. While the chart above pretty much answers the question of what is the voltage as of today for every North American OEM platform, this still leaves the bigger question of does the voltage make a difference? In short YES, voltage does make a difference in how the battery pack of an EV charges. The transition of moving from 400-volts to an 800-volt EV charging system offers the following advantages: Weight savings Enhanced performance Increased efficiency and charging power The largest drawback if you consider this a drawback is the need to convert existing charging stations to support the higher 800-volt specification and the need to redesign electrical components to support the higher voltage system. Lucid has one such platform as they say it can handle over 1000-volts though it is officially rated at 924-volts. The current leaders of an 800-volt architecture are as follows: Porsche Audi Hyundai Genesis Kia Volvo Polestar Bentley Lamborghini Tesla Cybertruck only What makes up an EV Charging system? For this I use a diagram from the ev charger design website. The basics are pretty simple that make up the EV charging system: Battery Motors Controller Sensors Wires Electrical paraphernalia As one can see above in the diagram you have two types of charging, DC fast charging which is a connection right into the battery pack delivering the largest and fastest charge possible. Second is the AC Charger, this can be from level 1 or 2 public chargers or from your own place of living, home, condo, townhouse, apartment and goes through an on-board controller and then into the battery pack. Now that we have covered the basic of an EV charging system, let's take a look at what makes up the charging of a battery system. Charging of a battery system breaks down into a simple 4 stage system. Stage 1 Constant Current - Voltage rises at constant current Stage 2 Saturation charge - Voltage peaks, current decreases Stage 3 Ready mode - Charge terminates Stage 4 Standby Mode - Occasional topping charge As the battery cells get saturated with power, the current drops off and this is why charging slows down as the battery pack fills up. DC Fast charging will power up the battery pack till it reaches a preset charge level that is usually set by the EVs built-in software and then charging stops, and nothing is ever added as to why some public charging stations including Tesla stations now charge for connections that are not charging to an auto as they want to free up the charger for other EV users. AC charging will charge up a battery pack to full but has the ability to sense if the battery level drops to top off the battery pack. This comes in to be very useful in extreme hot or cold environments where the battery pack needs to either be chilled or warmed up. End result is when you go to leave in your EV, you always have a full battery pack, based on the setting of the EV software. This could be 80%, 90%, etc. that you the end user chooses. 800-volts is the future replacement for the current 400-volt systems in use by the majority of auto OEMs. So what does this 800-volt system get us? Faster charging power Performance enhancement Efficiency Weight reduction End result is that the 800-volt system reduces the amount of time it takes to charge a battery pack, getting one on the road that much faster. This equates to the minimal time it takes to fill a gas tank in a traditional internal combustion engine auto. Currently the average gas fill-up takes approximately 5 minutes per the U.S. government. This in comparison to the average charging time of an EV: Level 1 charging can take 2 to 3 days @ 110 volt Level 2 charging can take 7 to 15 hours @ 240 volt Level 3 charging can take 15 to 45 minutes to reach 80% state of charge on a current 400-volt system The charging information above is based on a 60kWh battery pack from empty to full (80%) using a 7kW charging point. This can for level 1 and 2 change based on each EVs built in controller speed. See the chart above for controller charging speed by OEM. If the EV built in controller was to handle 14kW, then the Level 1 charging time would be 1 to 1 1/2 days. Level 2 charging would be 3 1/2 hours to 8 hours. Reduced even further the higher the controller kW is capable of handling. Faster DC charging also allows for EVs to have smaller battery packs (weight reduction) when you can quickly charge up the battery pack allowing for reduced battery pack size. Even with the average commute of auto owners being between 30 to 50 miles, range anxiety is an issue that has been blown up in the media depending on each media's agenda in support or against EVs. This is where weight increases have come from as people tend to have come to feel having 300 miles of range is a must in an auto. This also brings up the future of Solid-state batteries that in early prototype have shown to be four to ten times energy dense as current lithium-ion batteries. This allows the OEMs to then reduce the overall size of batteries, thus reducing weight of an EV. Another benefit that comes with 800-volt battery packs is the ability to charge in serial or parallel mode. This multi-charging system allows ease of working with all formats of 400-volt or 800-volt charging stations. Per a Harvard research release, solid-state batteries will dramatically reduce charging times. Researchers have proven that Solid-state lithium batteries can last 20 years with minimal degradation while recharging in minutes. They used the example of a 110kW battery pack that would be equal to today's 60kW lithium battery fully charging in only 10 minutes at 800-volt and could be reduced even further if charging was pushed to 1,200-volts or higher. Here we end up with smaller battery packs and faster charging by using 800-volt systems, add in solid-state batteries and you end up reducing the size and weight of the battery along with speeding up charging times. Yes, there are plenty of writeups showing the pros and cons of 400-volt to 800-volt with the biggest con being that money has to be spent by the companies to upgrade their auto design, components, etc. to handle the higher 800-volt charge, yet if they want to be competitive, then they cannot sit on the sidelines. End result is faster charging for all with an 800-volt system over the 400-volt systems allowing for a far superior experience by end users. Auto EV Platform Info 2023.xlsx View full article
  3. Every automotive original equipment manufacturer (OEM) has their own platform, or they have signed an agreement with another OEM to use their EV platform. The following chart lists all of the current North American Automotive OEMs and the platform details that they have released. While there are a few oddball platform voltages such as the Toyota/Lexus/Subaru platform with a 355-volt system or the Lucid with a 924-volt system, the bulk of the OEM auto manufactures have gone with a 400-volt or 800-volt system. Many of these OEMs are already planning or have moved to an 800-volt platform such as Tesla with the production start of their Cybertruck that is based on an 800-volt system running a 48-volt electrical system compared to internal combustion engine (ICE) autos that run a 12-volt system to run electronics while burning gas or diesel. While the chart above pretty much answers the question of what is the voltage as of today for every North American OEM platform, this still leaves the bigger question of does the voltage make a difference? In short YES, voltage does make a difference in how the battery pack of an EV charges. The transition of moving from 400-volts to an 800-volt EV charging system offers the following advantages: Weight savings Enhanced performance Increased efficiency and charging power The largest drawback if you consider this a drawback is the need to convert existing charging stations to support the higher 800-volt specification and the need to redesign electrical components to support the higher voltage system. Lucid has one such platform as they say it can handle over 1000-volts though it is officially rated at 924-volts. The current leaders of an 800-volt architecture are as follows: Porsche Audi Hyundai Genesis Kia Volvo Polestar Bentley Lamborghini Tesla Cybertruck only What makes up an EV Charging system? For this I use a diagram from the ev charger design website. The basics are pretty simple that make up the EV charging system: Battery Motors Controller Sensors Wires Electrical paraphernalia As one can see above in the diagram you have two types of charging, DC fast charging which is a connection right into the battery pack delivering the largest and fastest charge possible. Second is the AC Charger, this can be from level 1 or 2 public chargers or from your own place of living, home, condo, townhouse, apartment and goes through an on-board controller and then into the battery pack. Now that we have covered the basic of an EV charging system, let's take a look at what makes up the charging of a battery system. Charging of a battery system breaks down into a simple 4 stage system. Stage 1 Constant Current - Voltage rises at constant current Stage 2 Saturation charge - Voltage peaks, current decreases Stage 3 Ready mode - Charge terminates Stage 4 Standby Mode - Occasional topping charge As the battery cells get saturated with power, the current drops off and this is why charging slows down as the battery pack fills up. DC Fast charging will power up the battery pack till it reaches a preset charge level that is usually set by the EVs built-in software and then charging stops, and nothing is ever added as to why some public charging stations including Tesla stations now charge for connections that are not charging to an auto as they want to free up the charger for other EV users. AC charging will charge up a battery pack to full but has the ability to sense if the battery level drops to top off the battery pack. This comes in to be very useful in extreme hot or cold environments where the battery pack needs to either be chilled or warmed up. End result is when you go to leave in your EV, you always have a full battery pack, based on the setting of the EV software. This could be 80%, 90%, etc. that you the end user chooses. 800-volts is the future replacement for the current 400-volt systems in use by the majority of auto OEMs. So what does this 800-volt system get us? Faster charging power Performance enhancement Efficiency Weight reduction End result is that the 800-volt system reduces the amount of time it takes to charge a battery pack, getting one on the road that much faster. This equates to the minimal time it takes to fill a gas tank in a traditional internal combustion engine auto. Currently the average gas fill-up takes approximately 5 minutes per the U.S. government. This in comparison to the average charging time of an EV: Level 1 charging can take 2 to 3 days @ 110 volt Level 2 charging can take 7 to 15 hours @ 240 volt Level 3 charging can take 15 to 45 minutes to reach 80% state of charge on a current 400-volt system The charging information above is based on a 60kWh battery pack from empty to full (80%) using a 7kW charging point. This can for level 1 and 2 change based on each EVs built in controller speed. See the chart above for controller charging speed by OEM. If the EV built in controller was to handle 14kW, then the Level 1 charging time would be 1 to 1 1/2 days. Level 2 charging would be 3 1/2 hours to 8 hours. Reduced even further the higher the controller kW is capable of handling. Faster DC charging also allows for EVs to have smaller battery packs (weight reduction) when you can quickly charge up the battery pack allowing for reduced battery pack size. Even with the average commute of auto owners being between 30 to 50 miles, range anxiety is an issue that has been blown up in the media depending on each media's agenda in support or against EVs. This is where weight increases have come from as people tend to have come to feel having 300 miles of range is a must in an auto. This also brings up the future of Solid-state batteries that in early prototype have shown to be four to ten times energy dense as current lithium-ion batteries. This allows the OEMs to then reduce the overall size of batteries, thus reducing weight of an EV. Another benefit that comes with 800-volt battery packs is the ability to charge in serial or parallel mode. This multi-charging system allows ease of working with all formats of 400-volt or 800-volt charging stations. Per a Harvard research release, solid-state batteries will dramatically reduce charging times. Researchers have proven that Solid-state lithium batteries can last 20 years with minimal degradation while recharging in minutes. They used the example of a 110kW battery pack that would be equal to today's 60kW lithium battery fully charging in only 10 minutes at 800-volt and could be reduced even further if charging was pushed to 1,200-volts or higher. Here we end up with smaller battery packs and faster charging by using 800-volt systems, add in solid-state batteries and you end up reducing the size and weight of the battery along with speeding up charging times. Yes, there are plenty of writeups showing the pros and cons of 400-volt to 800-volt with the biggest con being that money has to be spent by the companies to upgrade their auto design, components, etc. to handle the higher 800-volt charge, yet if they want to be competitive, then they cannot sit on the sidelines. End result is faster charging for all with an 800-volt system over the 400-volt systems allowing for a far superior experience by end users. Auto EV Platform Info 2023.xlsx
  4. Agree, it will be a huge income stream for Tesla. This year will be interesting as the courts struck down Musks pay package, and he is now in the new today threatening to leave Tesla and the board is scrambling. Yet comments seem to be that folks are ready for him to go and be a more normal auto company. I remember when I first read this back in 2023. Tesla opening up Supercharger network is upsetting some owners, but in line with the mission | Electrek The responses are interesting. But with that said, I do agree that it is a good thing for Tesla, and I thought this write up from Dec 2023 that I read over my PTO was a well-done article on the opening up of the Tesla Supercharger Stations. Opening Up the Supercharger Network Will Be Good for Tesla (caranddriver.com)
  5. I can say with confidence that @surreal1272 is correct. I had a brand new only 14 miles on it as a rental in Kauai for 2 weeks. I could sit comfortably in the front, middle or even get into the 3rd row. I honestly was shocked at how roomy the Flex was. Shame it is gone as that was an outstanding comfy auto.
  6. The two tesla stations by me are always full, usually a couple Tesla waiting to charge. It will be interesting to see how bad the wait gets once all the OEMs are able to use the Tesla Supercharging network.
  7. I can understand that, looking at both Bing and Google Search results, EV conversion is very popular right now as more interest in converting an old auto to EV than updating to current gas motors. Then we have stories like this that continue to drive interest. Converting gas-powered cars to EVs is a booming business (cnbc.com) On top of this is the continued growth in Warp EV Motor sales as they are very easy to connect up to an automatic transmission. Might be good to do an update on this with current pricing to compare what conversion back in 2015 was to today in 2024. WOW 8 plus years ago. Crazy.
  8. It was a 2017 Explorer against the 2017 Jeep Grand Cherokee. Alex test drove both with the family and we all were not impressed with the interior of the Ford.
  9. WOW, so an oversized kidney grill that makes it ugly imho on top of a driver's seat with a raised nutcracker center spot on the driver's seat. I am really thinking that BMW has a bunch of ballless engineers. Not impressed.
  10. Will have to take a wait and see approach to this as when my son went SUV shopping in 2017 the Jeep Grand Cherokee won over the Explorer as the interior fit n finish was a huge difference between the too and now with the Jeep issues he ran into, he traded it in on a Kia Telluride. Ford Recalls and poor interiors have a wait and see approach to their autos for my household.
  11. This Jelly Bean will not be missed by me.
  12. Nice looking SUV, really am enjoying the current style of the GMC portfolio. I have to say that every auto is going to have a huge price increase due to the negotiations that took place last year with the suppliers during the height of the inflation. I have to think this will have to be addressed as sales drop this year.
  13. Saw two oldies today on my way to my yearly physical. A Saab Station wagon but could not see the actual model and a Ford Comet 4 door.
  14. OUCH, this is a scary thing that the UK government is proposing. UK law could ban Apple security updates across the world in an 'unprecedented overreach' (msn.com)
  15. While we do need a lower cost EV such as the EV4, I think it is smart as globally large purchases have cooled to spread out the roll out of EVs and right now SUV is far more popular than the sedans.
  16. Very cool the 7 awards Hyundai has gotten. Hyundai Receives Seven 2024 Car and Driver Editors' Choice Awards - Hyundai Newsroom
  17. WOW, talk about going out of the room to compare to something that was NEVER brought up by Drew or myself. I was comparing to make it clear here that you can get the Kia EV6 for less in a lease @ $349 than the Compass that Drew quoted with a lease of $548. This was never a comparison of Compass to a Model Y. Yet since you brought it up, Tesla shows that a Lease of the Model Y cheapest is $429, still more than the lease of a Kia EV6.
  18. A big chunk of folks are already priced out as the average income required to buy a new auto is now @ $94,282 This Is the Salary You Need To Afford a New Car in Your State | GOBankingRates You can see the specific wage for your state, but your state is over $95K and almost $97K in my state.
  19. True, but at the price point which one would you like to own is how i see it.
  20. Hard for the Compass to compete at those prices against the Kia EV6 here in AWD which has a Lease of $349 per month for 36 months and you can use the $7,500 IRA instant rebate as the down payment.
  21. @Drew Dowdell did mention that Jeep seems to be wanting to move up scale into the luxury market. Makes me wonder who will service the bottom end. Kia?
  22. For those interested in GM results and the CEO Letter: Q4 2023 Letter to Shareholders (gm.com) GM Releases 2023 Fourth-Quarter and Full-Year Results, and 2024 Guidance
  23. With California Politicians pushing to have speed regulators on all Auto's that whole Speed thing is a moot point for 0 to 60 if the auto see's your in a 25 mph zone and kills the accelerator when you hit 25mph.
  24. All the past buyers were heavy 2wd, 4 banger models. They killed off all the entry level so getting these folks to then move up the ladder to better equipped 4x4 models is gone. I think the American brands are not getting much love by the Stellantis European overlords.
  25. Excellent read on Right to Charge and how to do it if you do not live in a house. How to charge an EV if you live in a condo, apartment or use street parking - The Washington Post Interesting read, facts are auto owners want less maintenance and cost, Hybrid vehicles and Hydrogen vehicles are NOT less expensive or Less maintenance. Despite Bad Press, Half of Americans Still Want an EV or Hybrid (businessinsider.com)
×
×
  • Create New...

Hey there, we noticed you're using an ad-blocker. We're a small site that is supported by ads or subscriptions. We rely on these to pay for server costs and vehicle reviews.  Please consider whitelisting us in your ad-blocker, or if you really like what you see, you can pick up one of our subscriptions for just $1.75 a month or $15 a year. It may not seem like a lot, but it goes a long way to help support real, honest content, that isn't generated by an AI bot.

See you out there.

Drew
Editor-in-Chief

Write what you are looking for and press enter or click the search icon to begin your search

Change privacy settings