Showing posts with label battery module. Show all posts
Showing posts with label battery module. Show all posts

Krueger: BMW i3 to Get "Battery Facelift" in 2016

BMW CEO Krueger revealed plans to increase the i3's range in 2016
It's no secret that if BMW wants the i3 to continue to remain relevant they will eventually have to increase its all electric range. In fact, in about a year there will be no less than two electric vehicles available in North America that have double the i3's all electric range and also cost less. Nissan will be launching the second generation LEAF, and Chevrolet will bring the Bolt EV to market by the end of 2016 and they are both rumored to have approximately 200 miles of electric range.

I think it's fair to say most people expected BMW to up the i3's range to stay competitive, but when they would do so was not known. Until now. BMW CEO Harold Krueger in an interview with Die Zeit recently said this about the topic:

“Battery cell technology continues to evolve. The range of the i3 will be increased in 2016. A further technological improvement is to be expected in three or four years: Then you’ll be able to go twice as far on a single charge without any further increase in the weight of the battery."
This is the first time anyone from BMW has offered a clear statement about increasing the range of the current i3. Personally, I didn't expect this yet, but welcome the news. I had always maintained that the i3's range would be linked to the progress made by BMW's battery partner, Samsung SDI. So the news that the MY2017 i3 will have increased range is interesting as well as exciting. It's interesting because Samsung has maintained that they wouldn't be bringing the next generation of large format, automotive grade batteries with increased energy density to market before 2018 - 2019. See timeline produced by Samsung SDI below:
Samsung SDI Battery Technology Roadmap
So the question is: How is BMW increasing the i3 range? Here are some possible explanations:

1) They are sourcing higher energy density batteries from other suppliers. This could very likely be the answer. The i3's 130 kW/Kg battery cells are not nearly as energy dense as the cells Tesla uses for instance. BMW could have a partner to supply them with cells which have considerably higher energy density and accomplished the increased range using the same battery tray as the current i3.

2) Samsung SDI provided BMW with a battery which is incrementally better than the existing cells they provide BWM with, but not quite as energy dense as the cells they plan to have in three or four years, according to their technology roadmap. Again, this would allow BMW to use the current battery tray and not need any major structural re-engineering. 

3) BMW redesigned the battery tray to accommodate more battery modules, or used the area where the range extender goes to add a second, smaller battery pack. Either of these options would have required a lot of engineering, testing and validation. I just don't see BMW doing either of these for a mid-cycle refresh. Certainly when the next generation i3 comes out in 2018 or 2019 there will likely be new redesign of the battery tray area, but not for a refresh, it's just too expensive to do that only two years after the initial launch.

Another benefit of the increased electric range will be increased gas range for the REx i3s in the US. Unlike in Europe, the US i3 must have a shorter range when driving on gasoline than it does on battery alone. This is a complicated issue which is tied to the amount of ZEV credits BMW gets for every i3 they sell, but in short by increasing the i3's all electric range, they can then allow the gas range to increase and still qualify for the maximum ZEV credits they get. The current i3 REx is EPA rated at 72 miles per charge and the range extender's gas tank is software limited to 1.9 US gallons which provides another 70 miles of range. If BMW were to increase the i3's REx's electric range from 72mpc to 92mpc. They could then allow US customers full use of the 2.4 gallon gas tank, and the combined range would go from about 142 miles to roughly 182 miles.

BMW employee working on an i3 battery pack assembly
Krueger was also asked if current i3 owners would have the ability to upgrade their cars with the new batteries and his answer was: "We are currently looking into that." Personally I believe that will be possible, but not economically viable, for now at least. I know current i3 owners will be asking about an upgrade but it just doesn't make sense to replace a battery pack that is two years old for just a little more range. I think it's more likely that in four or five more years when some of the original wave of i3 owners have 120,000 to 150,000 miles on their car they will be looking at the next generation of battery cells which will be available and these "new" battery cells will already be obsolete. I would be surprised if BMW didn't engineer those new cells to fit in the same modules the current i3 uses, so a complete replacement with the upgraded battery cells would then be possible.

What effect this will have on i3 sales from now until this new longer range i3 is available is unknown, but there is at least some comparable data to use. Both the Chevy Volt and the Nissan LEAF launched in late 2010 and are just now releasing upgraded range models. The Volt is a complete redesign and the LEAF is doing more of what BMW is now by keeping basically the same vehicle and offering it with an incremental longer range. The 2nd generation LEAF which will be completely redesigned and offer much more range won't be available for about another year. In both cases these cars experienced greatly reduced monthly sales in their final months as customers waited for the new model with longer range. Like Nissan and Chevrolet, BMW will likely have to offer some favorable financial incentives to clear the remaining 2016 stock once the new battery i3 is nearing availability meaning this should be a good time to pick up an i3 for a great deal.

In any event, this is all great news. It further proves BMW's commitment to electric cars and their willingness to upgrade the i3 as battery technology improves. 

Q&A with BMW's Jose Guerrero at the New York Auto Show

Jose explaining the features of the concept i3 at the BMW i Born Electric Tour back in 2012

Having been in BMW's trial lease e-mobility program for five years, I've been able to get to know many of the program managers and engineers working at BMW i in North America. Jose Guerrero, Product Planning and Strategy Manager for BMW i, is one of only a few people at BMW of North America who has been a constant force in the program over the years. That's the nature of the auto industry though. People move around within the company, and often even leave to take on positions at competing OEMs.

So when I saw Jose's name on the list for available interviews at this year's New York Auto Show, I quickly reserved a half hour to sit down with him and talk about the i3 and the future of BMW i.

My i3's battery pack. It was removed from the car in less than an hour.
Future Battery Replacement

The first question was easy. There has been a lot of talk about recent comments by BMW's R&D chief Klaus Froehlich. Froehlich was recently interviewed by Automotive News Europe and asked if BMW would be offering a "more powerful powertrain" for the i3 or i8, and many took that as meaning better batteries once they become available. Froehlich said:  “I don’t think a retrofit makes sense. When better batteries are available, we could then offer models with a longer range or with the same range but at a lower price" and "replacing the batteries is very complex because they are integrated and bonded into the chassis." This didn't make sense to me because I know that any certified BMW i service center can drop the i3's battery and replace one or more of the eight battery modules and put the car back together in a couple of hours. In fact, I've personally seen it done on my car in less than a day. What would prevent BMW from upgrading these modules with higher energy-density cells once they are available in a few years? Here's what Jose had to say about that:
The underside of my i3 with the battery pack removed.

"The strategy of BMW i has always been focusing on sustainability, recycling and really maximizing the usage life of the car. I mean, first of all the car won't rust. It's made of carbon fiber reinforced plastic & aluminum so we are looking at how do we maximize the car for long usage. He didn't say it's not upgradable, but rather that at this point it doesn't seem to make sense. We really are investigating this and if it's possible, and it makes financial sense, why not? This would be in line with the BMW i philosophy. We haven't said we aren't going to do it, just that it has to make sense. A BMW i dealer can do a complete battery replacement in 3 to 5 hours so from a technical perspective it's clearly possible, we would just need to make sure it also makes financial sense. We are always getting asked, "Could you retrofit a navigation system, or Comfort Access into a car?" Yes, we could, but we'd have to rip the whole car apart. That isn't the case with better batteries once they become available, it just has to make sense. We are definitely investigating this, so if it makes sense we'll do it." Guerrero further went on to say it's conceivable Froehlich may have been misquoted or perhaps there was a translation issue because he certainly knows the batteries aren't "bonded into the chassis" as the Automotive News Europe's story indicated.

The Circuit

BMW i has recently launched a new online forum called "The Circuit". Would you like to explain why, and what exactly it is?

"We recognized these cars are different and customers will have questions that are unique to the i brand. We wanted to provide a forum where BMW i customers could communicate amongst themselves, share information and also ask BMW questions directly. There is an entire section called "Ask BMW" where customers can ask questions and get answers much faster than would have ever been possible before. It's direct access to BMW i personal that was not previously possible. We'll post information regarding technical updates, upcoming events, and all official BMW i news. It's our goal to use the forum to improve the BMW i ownership experience."

Hill Climb Assist

Late last year BMW had stated the i3 with range extender would have a software update in March which would add a new feature called "Hill Climb Assist." This was supposed to prevent sudden reduced power mode without warning while the REx was running and to make the vehicle more capable of climbing long, steep hills at highway speeds while in charge sustaining mode. Can you talk a little about this?

"This is something we are still working on. First, let me say the March 15th software update addresses part of the problem which was to provide information to help the driver avoid reduced power in these challenging driving conditions. A big gripe which the owners conveyed to us was they didn't have any warning before the vehicle reduced power. We've corrected that with a warning which comes on before the vehicle enters reduced power mode to warn the driver to alter their driving (basically that means to reduce speed) to hopefully prevent reduced power. Secondly, we've added a state of charge display so drivers can see the exact state of charge and monitor it more closely during these driving events. The the new state of charge display is also applied to the BEV i3s once they get the software update also.
An audible warning and this visual alert comes on when the state of charge drops to 3.5%, warning the driver that reduced power is possible, and giving them time to alter their driving to avoid it.  You can also see the new SOC display in the top left corner.

As for the Hill Climb Assist feature, we're still perfecting it. For the past four months we had a group of i3 REx owners beta testing Hill Climb Assist software and the feedback we got caused us to go back and redevelop it, creating an even more robust version. We are now testing a new version and once we're confident it is ready we will again give it to the beta test group for real world testing before we release it to the general i3 public. We are committed to getting this right and feedback from actual i3 owners is critical."

At this point I was shown a video of an i3 REx driving up a steep mountain climb at highway speeds in the snow. I was told this car had the new software and they were testing it in Vermont this winter on a closed road which was over 3 miles long, up steep hill at highway speeds in the snow. It should be noted that I am one of the people in the i3 REx customer beta test group which tested the previous Hill Climb Assist software. I reported back to BMW that it was insufficient, and it was my recommendation to re-engineer it before it was released to the public. I'm happy BMW agreed and look forward to testing the current version which I'm promised is more robust. I'll report on this new software once I have it on my car. It's not expected to have this new Hill Climb Assist software ready for the general public for another six months or so.
BMW i has a new North American Manager. What changes should we expect?
New Program Manager for BMW i

My last question was regarding the new Manager of Electric Vehicle for BMW of North America, Christine Fleischer. BMW i of North America hasn't had a permanent division manager since Jacob Harb left the post back in November. Prior to assuming the position at the helm of BMW i, Christine had been the BMW M & Individual Area Manager for North & South America.  I asked Jose what this means for the future of BMW i.

"Christine has now started her new role and we're all very excited. During Jacob's time here he was focused on the launch of the brand and we're now in a different phase. Now with Christine we're focusing on continuing dealer training and building sales. We're through the early adopter phase of i3 sales, and we now need to reach the early majority to continue to build sales. Dealer training is important and we'll continue to offer this specialized training so our sales force is prepared, and that's critical to maintain the sales momentum we've built. The whole team is excited to have Christine here for the next phase of BMW i."
The new North American BMW i manager, Christine Fleischer next to a 1M at the Canadian launch in 2011.
Photo courtesy of BMWBLOG


Will an Optional "High Power" Battery For the i3 Be Available Soon?


I was tipped off by an anonymous follower here that the Spanish i3 online configurer has a not-yet-available option called "Bateria de mayor potencia" which Google Translate will tell you means "battery more powerful" in English. There isn't a picture for the option and you can't order it - yet. I checked the other BMW models on the site to make sure this wasn't just some kind of phantom option or mistake that was listed on all the BMW cars on the site and it isn't. It was in fact only listed on the i3 options page.

An inside look of  i3 Battery module
So I reached out to a contact I have in Spain that is well connected in the electric vehicle community there to look into this and see what they can uncover. Could the Spanish BMW site have inadvertently tipped us off as to what will soon be available? Maybe this is as innocuous as an optional, more powerful 12v battery? However I've never heard of an optional 12v battery being offered in any i3 market yet and I'm not sure why would they would need it? The 12v battery doesn't need to do very much on the i3 the first place. The car is already equipped with a cold weather package in cold-climate markets and there is no mention of a more powerful battery in that package. I would think if BMW thought the standard 12v battery was insufficient they would have just made all the cars standard with the more powerful one in the first place.

i3 Battery pack
There have been rumors that BMW is already field testing higher density batteries and that they will be available in the not-too-distant future. BMW has always maintained that the i3's battery pack is easily replaceable and that it's likely down the road when a customer determines it's time to replace their pack the replacement pack will be more robust, allowing for a greater range than the original battery did when it was new. Could that be available sooner than we anticipated?

Battery tech is constantly evolving. Tesla for example is rumored to be replacing the current batteries they use with higher density cells in the very near future and will soon open the Gigafactory(s) to manufacture them. Over in the BMW ActiveE Facebook group we recently had a fellow ActiveE driver say he had the opportunity to ride in a test MINI-E at BMW's Technology Center that was fitted with BMW's next generation of batteries and the car had about a 200 mile range. This cannot be confirmed but I have no reason to doubt his claim.

So this may be nothing, a simple mistake or misunderstanding on the BMW i3s Spanish website. Or maybe not...