~ Auto Buzz ~: DCQC
Showing posts with label DCQC. Show all posts
Showing posts with label DCQC. Show all posts

Thursday, 4 September 2014

Born Electric Guest Blogger: Meet Scott From California




Hi, my name is Scott Lawson and I was Born Electric on August 11, 2014.

I confess: I am not a ‘car guy’. For me, cars are dirty explosion factories full of toxic liquids and endless grime. Oil changes, frequent fill ups, dusty air filters, and a noisy engine seemed to be an unnecessary evil. If I was to get an EV, I wanted it to be 100% electric, no engine, no gas, no oil, no going back! At times, I have even thought that if I lived in the city I would outsource my transportation to taxis, buses, and trains. But living in the so-called mega-city of SoCal (from San Diego to Santa Barbara) with inadequate public transportation options, a car is required. And since I am confessing, I should say I love traveling fast and zipping around in a driver’s car. Over the years BMWs have fit my needs well but were still powered by gas. I considered the LEAF for a fleeting moment and the Tesla Model S seemed like a car for executives or super models! And costs twice as much as any car I have ever owned.

My i3 in the mountains
BMW decided several years ago to create the BMW “i” sub brand and delve into creating a new kind of transport which they call ‘sustainable mobility’. More than just making an electric car, BMW is looking to change how personal transportation is defined. When the i3 hit the market I was excited to learn more; and the more I learned, the more I felt one with the design principles and philosophy. I am a system architect and strive to make technology useful to people and efficient for business. As I discovered more about the BMW i project and their first product, the all electric i3, I appreciated the innovative use of technology both in the machine and for the consumer.

At the San Antonio dam
The i3 driving machine’s body is made of carbon fiber reinforced plastic (CFRP) including fibers from the Kenaf plant (Hibiscus cannabinus), a form of hemp, for the interior. The manufacturing of the car is computer-controlled and ultra clean using robots, clean rooms, heat-activated glue welds, an all aluminum body, and powered by wind and hydroelectric power. As I read how BMW designed the car as ‘electric first’, I appreciated the lack of a large front hood, the use of tall skinny tires for less rolling resistance, that the ultra-light CFRP and aluminum construction allowed more efficient range. The opposing doors are possible because of the structural integrity of the material and the short overhangs on the front and rear help parking the car in a busy city. All of this adds us to a futuristic design not only in looks but in function. All of the thought that was put into the sustainability and design impressed me even before the first torque-filled test drive.


As an explorer of new technology I was impressed with the consumer technology built into the car. Integrated sensors and computers help in safety and convenience from the door locks to the theft protection to active cruise control to the integration with internet applications. The maps not only have traffic, but charging stations, mass transit stations and other points of interest. The i3 can listen to you with voice commands and read news and social media updates. The iDrive controller even has one-finger handwriting recognition so you can spell destinations or peoples names. The 20 GB music storage is fast and you can even play video from a directly connected USB drive (while parked, of course!). All of this adds up to the i3 being more than just the ultimate driving machine and turns it into the ultimate transportation machine. I feel it can transport me in time by delivering information to keep me efficiently connected to my social circle and work activities.
Up at Mt. Baldy
This is a new way of thinking. Just as cloud computing and mobile have changed the way we think about file storage, applications, installing software, and upgrades, the i3 alters the way we think about driving. It is something you have to not only experience, but something you have to work with and adapt to. It is a new way of driving. The “one pedal” experience is awkward at first, almost annoying, until you get the feel of it and think about electric propulsion. Driving one pedal is the best way to accelerate and decelerate and you begin to think about gliding to a stop and working with the force of the car. Your right foot is always active but never leaves the main accelerator pedal.

You have to change your thinking about “fuel” and trip planning. You can charge in your garage with a ‘level 2’ 240v charging station. While it relieves you of having to get gas, you do have to remember to plug the car in when you get home. This behavior is becoming familiar as many, if not all, i3 owners will have some form of mobile phone or mobile device that they plug in everyday. When it comes to trip planning, that requires a deeper shift in thinking. With an EV you just cannot ignore this aspect. Most technological shifts require new modes: you have to plan to record your show if you want to watch without commercials, you have to sync your laptop files if you want to work on them while on a flight, you have to schedule a PC virus check at night to avoid malware. Going on a trip up a mountain in the i3, you need to plan to see if there are charging stations, what kind they are (to make sure you are able to charge on them), and to figure the most efficient path there. The i3 itself helps with this by warning you on your state of charge (SOC) and showing you charging locations near you. But with only 25 miles of range to every 1 hour of charge, this is a slow process. More ‘level 3’ charging stations (also called DC Fast Charge) are coming and the i3 can be configured to use them to get charged up in 20-30 minutes. Unfortunately only in some places in the world today have a large enough concentration of DCFC stations to make longer trip travel carefree.
Cooling off in the shade for a bit
To get the most out of the i3, subtle shifts in thinking make all the difference. To save your potential range you can pre-condition the cabin for comfort while it is plugged in. To save on electricity you can set it to charge when your electricity rate is low. To more easily find your destination you can search online at your desk and send the address to the car via the internet. How you navigate these subtle shifts in thinking is the key to success in the modern EV world.

The i3 has taught me that driving an EV is not just changing how your vehicle is powered. It requires that you accept a new type of mobility and adjust how you approach your car. Many people will say an internet news site is just an electronic newspaper or that Google is just an electronic yellow pages, or that cloud file storage is just a “hard drive in the sky”. All of these ways of thinking miss the point that new paradigms like the i3 are a leap into something new. James May of Top Gear recently wrote this about the i3: “Being a car is just one of its apps”. A famous petrolhead, he sees the paradigm shift, too. You have to challenge yourself and think different. And owning an i3 will help you do just that.


I'd like to thank Scott for sharing his i3 story here. One last thing I'd like to point out is that Scott created a BMW i3 Owners map. You can enter your location and add yourself to the map HERE.  I'm going to do a dedicated post on this soon though because it was a great idea and something I think other i3 owners will enjoy. 

Scott is the tenth Born Electric guest blogger I've featured here and I appreciate the time everyone has spent to tell the readers about their i3 experience. Previous Born Electric posts can be found below:

Andy from The UK
Hil from Holland 
Toni from Belgium 
Jan from Belgium 
Steven from The Netherlands
Jon from Norway  
Ross from The UK

If you own an i3 and would like to participate here in the Born Electric guest blogger series, email me at: tom.moloughney@gmail.com


Monday, 1 September 2014

Mountain Climbing With an i3 REx



Loveland Pass, Continental Divide, Colorado. Elevation 11,990 ft
A few weeks ago Don Parsons of Denver, Colorado took his i3 REx on a 128 mile road trip from his house to Loveland Pass (Continental Divide, Colorado). On his way up to the 11,990 ft elevation of Loveland Pass he stopped at Beau Jo's Pizza for lunch and to charge on their public ChargePoint EVSE where his i3 REx accepted 8.9kWh's of juice to help with the rest of the climb up the mountain. 

The car showed 18 miles remaining at the top of Loveland Pass, and he nearly made the trip entirely on electricity when 62 miles later the range extender kicked on and he was only 2 miles from his home. 
The trip summary: 
-64 miles each way
-8,960 feet of climbing, 2329 Feet of descending on way out
-2329 feet of climbing, 8,960 feet of descending on way back
Having heard about this Continental Divide conquest, I asked Don if he wanted to write a guest blog post about the trip, but he offered to do one better. His next challenge was to take his i3 REx up to the summit of Mt Evans which is the highest elevation paved road in the US. The trip would take him over 14,000 feet above sea level and would most certainly push the range extender beyond its limit. This was not the kind of road trip BMW envisioned people taking the car on when they designed the REx, but nonetheless they have to expect some people like Don would do just that. So what happened? Read Don's words below to find out:



I’ve had my BMW i3 REx for almost two months now and haven’t really used or tested the REx engine.  Before today, I’d driven about 1750 miles total with only about 10 miles using the engine.  I decided to drive from my house in Denver to the top of Mt. Evans and return without stopping for gas or topping off the charge.  Using the REx engine in the mountains can be tough because the output of the small engine can’t really put out enough power to go both highway speeds and climb uphill.  However, the road to the top of Mt. Evans is pretty narrow, has steep drop-offs, no guardrails and a lot of cyclists sharing the road so you really don’t want to go much faster than 35 mph.  For this reason, I thought the small engine could hopefully handle the climb.
For those that don’t know, Mt. Evans is the highest paved road in North America with an elevation of 14,130 feet above sea level!  I live in Denver which is at 5,280 feet above sea level.  It’s 63.5 miles from my house to the top Mt. Evans.  With some up and down hill climbing, the total ascent is 12,446 feet and the total descent is 3,686 getting to the summit.
I set the car into Eco Pro+ and set out on city streets of Denver, then I-70 west up the mountains to Idaho Springs.  Mt. Evans highway winds its way south from Idaho Springs to the Mt. Evans summit in 28 miles.  When I originally entered the destination into the navigation system, the guess-o-meter said 61 miles of range.  I tried to keep the cruise control set to about 5 miles over the speed limit.


I was surprised to find that the Rex engine didn’t turn on until about 52 miles into the drive (about 10 miles from the summit) with a total trip average mi/kWh of 2.8 when the REx kicked on.  However, about 1 minute after the REx turned on I got a Brake error message that ended up making the brake pedal feel stiff and pretty much unusable.  Fortunately, I was still heading uphill and the regen seemed to be working normally.


I could hear the engine speed up during the straight parts of the switchbacks and as I slowed down for the sharp curves, the engine almost immediately slowed down as well.  I never really wanted to travel faster than 35 mph so I didn’t notice any performance hit until near the summit.  On the last few switchbacks, I put my foot to the floor and couldn’t get the car to travel faster than 26 mph.  At close to 14,000 feet of elevation, the engine was probably severely limited from its usual output at sea-level.  I’ve heard people say that an ICE reduces power output by 5% for each 1,000 feet of elevation.  In any event no other cars were traveling any faster than 25 or 30 mph so I didn’t feel unsafe.
I finally made it to the top at 14,130 feet!  The temperature had gone from 68 degrees in Denver to 35 degrees and quite windy.  This road usually shuts down for the winter sometime in September so they will be expecting snow to start accumulating up there pretty soon!

As I was getting ready to head down, I was worried about whether I would have any use of the brakes since I had turned off the car and walked around the summit for about 5 minutes hoping the error would reset but it didn’t and I still had a stiff brake pedal.  Since it was 35 degrees up there, I was pretty cold and didn’t feel like waiting any longer so I thought I would start to head down and see how well the regen worked to keep the car in control.  You can imagine how happy I was to have such a high regen rate because I felt like I was in complete control all the way back home.

During the descent from the summit down to Idaho Springs I was excited to see that the regen had built up a full 25% of the battery SOC and the guess-o-meter said as high as 28 miles of range on the battery.  I drove home significantly on battery but the REx kicked in a few times where there was some climbing.  It also stayed on once I got out of the mountains but I was easily able to maintain 75 mph on the highway leading east back into the city.

Here's a screenshot of the elevation and speed of the whole trip
Some stats on the whole trip.  I traveled 127.6 miles and averaged 4.9 mi/kWh and average speed was a total of 39.6 mph.  I used a little over a quarter of the rex tank which I think is pretty minimal for traveling almost 130 miles! As you can see from the picture, the brake error was still in place when I arrived home.  However, after being on my EVSE for a little over an hour, everything was cleared out and a quick trip to grab lunch showed that everything was back to normal.

I should point out that I haven’t gotten any software updates yet as I haven’t been able to set aside the time.  Until this trip, the only error I’ve seen from the car is the Check Engine Light, which remains illuminated. There is a software update that will eliminate this waiting for me at my dealer, so I guess it's time to get the car into the shop for the updates.  Hopefully the brake error is related to the 12v battery issues that others have discussed and will also be fixed with the latest software version I'll be getting. 
When I thought about getting the i3 Rex, I figured that I would use the battery over 95% of my driving miles.  So far, it seems like I’m using the battery over 97% of my miles.  That said, I’m still happy to have the Rex as it completely takes away any range anxiety when I’m traveling in the flats of the front range of Colorado.

What about the mountains?  I was concerned about using the i3 REx in the mountains and still believe that having a REx hold mode similar to the European version of the i3 or the Chevy Volt would make this an even more enjoyable car in Colorado.  That said, a couple CCS fast chargers placed strategically off I-70 would go a long way to helping the issue.  Locations in Idaho Springs, Silverthorne (where the 8 Tesla Superchargers are located) Copper Mountain, and Vail would be ideal spots to get a quick top-off and be truly useful in the mountains.  I’ve also kept my 335xi for long distance ski trips since it has all wheel drive and is still a great car. However, even without the fast chargers I was able to make it to the summit and home without a problem.

I’m very happy with the the i3.  The performance, handling, smoothness, and quietness all contribute to a great experience.  Like others have said, it’s hard to go back to a regular internal combustion engine after experiencing electric!


Tuesday, 29 July 2014

BMW i Announces New DC Quick Charger and It's a Potential Game Changer



The very first public display of the new BMW i DC quick charger
BMW stole the show today at the start of Plug-in 2014 in San Jose, California by not only announcing a new DC quick charger that will charge an i3 to 80% in 30 minutes, but also by saying the use of these chargers will be free for i3 users through the end of 2015. 

This is a huge step forward for BMW i and the EV movement in general. I have consistently contended that the mass adoption of electric vehicles will hinge on the deployment of rapid charging. Even though the majority of charging will be at a slower rate and overnight, for EVs to really be taken seriously by the masses they need to be capable of refueling in less than an hour while making longer journeys. Tesla and Nissan have already demonstrated that they understand this and have made significant investments in DC quick charge infrastructure, and today's announcement from BMW is proof that BMW also realizes this and appears ready and willing to jump into the DC quick charge game.  
The new BMW i 24kW DC quick charger
The interesting thing about BMW's approach is that they didn't just use existing DCQC equipment. Instead, they took a different approach working with Bosch to create an entirely new type of DCQC that is specifically tailored to suit the needs of their car, the i3. One of the barriers to installing DC quick chargers is the cost of bringing the high voltage service to the location.  By limiting the draw to 24kW's the site won't incur the sometimes-astronomical utility demand fees which can make DC Fast charging cost as much as filling up a car with gas. BMW has worked with utilities to agree on a level of supply which would avoid these high demand charges. 

So if these DC quick chargers only supply 24 kW's that must mean they charge the cars much slower than a conventional 50kW DC quick charger, right? Wrong. This is what I meant about these being tailored for the i3. The i3's relatively small battery can't really utilize a higher rate than 24kW effectively. All DC Quick chargers taper off to a lower charge rate once they get close to fully charging the battery to prevent overcharging and damaging the cells. The i3 only has a usable battery capacity of 18.8kW's so on a 50kW quick charger it only will charge at the full rate for about 10 minutes before it starts ramping down to a lower charge rate. In fact, BMW claims the i3 will charge to 80% in about 25 minutes on a 50kW DC quick charger. On this new 24kW unit, it only takes about 5 minutes longer, charging to 80% SOC in 30 minutes. So for only an extra 5 minute penalty, you get:

1) A low-cost solution for DCQC. BMW will sell the unit to their partners for only $6,548 which is less than half as expensive as the least expensive 50kW CCS DC quick charger made by ABB. "Partners" include BMW dealerships, utilities and municipalities that want to provide this service. BMW hasn't decided on a regular retail cost for the units but they are willing to discuss it with interested parties.
2) The unit is small, measuring 31"(H) x 19" (W) x 12"(D) and only weighs about 125 lbs. It can even be pedestal or wall mounted, unlike any other DCQC on the market.
3) The sites won't have to pay the excessive demand charges for electricity. Instead it will be the regular  electric rate, allowing for a reasonable cost to be assessed for use of the charger. 

Even with all this great news, you'll notice the title reads that this is a "potential" game changer. As good as these units sound, they won't do any good if they aren't installed. It's already been announced that in California the NRG eVgo DC Fast Charging network will deploy a minimum of 100 BMW i3 compatible DC Fast Chargers, but what about the rest of the country? Will BMW step up and prove they are "all in" like Nissan and Tesla have and assist (yes that means subsidize) the deployment of these quick charge stations in other markets? Only time will tell, but I have to say I like what I'm seeing so far. Let's keep the ball rolling BMW.
Specifications for the new DCQC unit

Below is the full press release from BMW:
 
San Jose, CA/Woodcliff Lake, NJ – July 28, 2014… At Plug-In 2014, a conference dedicated to discussing key issues for the long-term success of electric vehicles, BMW of North America launched its BMW i DC Fast Chargers which can charge the BMW i3 all-electric vehicle’s battery up to 80 percent in 30 minutes. A joint development between BMW and Bosch Automotive Service Solutions, BMW i DC Fast Chargers will change the face of public charging as the first compact and affordable DC Combo fast charger. The first BMW i DC Fast Charger will be on display at Plug-In 2014 on July 28 at the San Jose Convention Center. BMW also announced its new ChargeNow DC Fast program in cooperation with NRG eVgo, in which BMW i3 drivers in California can enjoy no cost unlimited 30 minute DC fast charging, at NRG eVgo Freedom Station® sites equipped with DC Combo Fast Charging, through 2015.

Introducing the BMW i DC Fast Charger
Conventional DC fast chargers are about the size of a standard refrigerator, cost tens of thousands of dollars and require a significant amount of electricity. Half the size of a traditional electric vehicle DC charger – measuring 31”H x 19”W x 12”D and weighing approximately 100 pounds – BMW i DC Fast Chargers can be mounted on a wall, a first for electric vehicle DC fast chargers. In addition, BMW i DC Fast Chargers will be priced significantly less than other DC Combo chargers in the market at $6,548 for authorized BMW partners.

“This is a milestone in the development of the DC fast charging infrastructure. With more than five years of real world experience, we understand that a robust network of publicly available DC Combo Fast Chargers is a key part of the mobility of tomorrow,” said Robert Healey, EV Infrastructure Manager, at BMW of North America. “BMW is offering the BMW i DC Fast Charger at an appealing price point, and more manageable size, to make the convenience of DC fast charging more accessible for BMW i3 owners.”

The 24 kW DC Fast Charger feeds the current directly to the vehicle’s battery, resulting in a more efficient and faster charge. BMW i DC Fast Chargers use the SAE Combo 1 connector, the North American automotive industry standard for fast charging; feature a rugged aluminum IP54 enclosure; meet NEMA 3 requirements; and are designed to perform in extreme weather conditions, from -40°F to 185°F. Additionally, the BMW i DC Fast Charger is ChargePoint network-enabled, allowing electric vehicle drivers with the SAE Combo 1 inlet to access the BMW i DC Fast Charger using a ChargePoint or ChargeNow card. Major automakers including BMW, GM, Ford, Chrysler, Daimler, Volkswagen, Audi and Porsche have committed to adopting the SAE Combo 1 inlet for DC charging. The BMW i DC Fast Chargers will be available for BMW i Centers across the U.S. beginning in August.

Introducing ChargeNow DC Fast for BMW i3 Drivers
In keeping with its holistic approach to making DC fast charging more accessible and, in turn, increasing the adoption of electric vehicles, BMW, in cooperation with NRG eVgo, will offer no cost charging to BMW i3 drivers at participating eVgo Freedom Station sites equipped with DC Combo Fast Charging in California through 2015.

Using their ChargeNow cards, BMW i3 drivers will have access to unlimited 30-minute DC fast charging sessions with the ChargeNow DC Fast program. BMW i3 owners can sign up easily for ChargeNow DC Fast at chargenow.com/us. In order to receive the full benefits of the program, BMW i3 drivers must use the ChargeNow card, provided with their BMW i3, to charge the vehicle at least once by December 31, 2014, at a participating eVgo Freedom Station. By doing so, BMW i3 drivers will enjoy continued access to no cost DC charging sessions through the end of 2015. Eligible BMW i3 vehicles must be equipped with the DC Fast Charging option (SAE).

“We’re confident the rapidly-expanding NRG eVgo DC Fast Charging network will provide significant benefits to BMW i3 drivers in California,” continued Mr. Healey. “With the cooperation between ChargePoint and NRG eVgo, ChargeNow DC Fast brings us closer to the reality of one card, one account public charging network interoperability.” eVgo will deploy a minimum of 100 BMW i3 compatible DC Fast Chargers across California to support the ChargeNow DC Fast Program.
“This is a milestone in the development of the DC fast charging infrastructure. With more than five years of real world experience, we understand that a robust network of publicly available DC Combo Fast Chargers is a key part of the mobility of tomorrow,” said Robert Healey, EV Infrastructure Manager, at BMW of North America. “BMW is offering the BMW i DC Fast Charger at an appealing price point, and more manageable size, to make the convenience of DC fast charging more accessible for BMW i3 owners.” - See more at: http://www.longtailpipe.com/2014/07/bmw-shows-smallest-and-lowest-cost-dc.html?utm_source=dlvr.it&utm_medium=facebook#sthash.B9P4jL3V.dpuf
“This is a milestone in the development of the DC fast charging infrastructure. With more than five years of real world experience, we understand that a robust network of publicly available DC Combo Fast Chargers is a key part of the mobility of tomorrow,” said Robert Healey, EV Infrastructure Manager, at BMW of North America. “BMW is offering the BMW i DC Fast Charger at an appealing price point, and more manageable size, to make the convenience of DC fast charging more accessible for BMW i3 owners.” - See more at: http://www.longtailpipe.com/2014/07/bmw-shows-smallest-and-lowest-cost-dc.html?utm_source=dlvr.it&utm_medium=facebook#sthash.B9P4jL3V.dpuf


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