Tesla Roadsters Charge At CHAdeMO Thanks To JdeMO – Video

2 years ago by Mark Kane 18

Two Tesla Roadsters charging from the CHAdeMO using JdeMO

Two Tesla Roadsters charging from the CHAdeMO using JdeMO

After successfully developing capability of CHAdeMO DC fast charging for the Toyota RAV4 EV (originally only J1772 enabled), Quick Charge Power demonstrates Tesla Roadster retrofit with CHAdeMO – JdeMO.

Two Roadsters, 1.5 and 2.5 versions were connected to the NRG EVgo chargers in California and were able to charge at the 1st try.

“This is two Tesla Roadsters being charged at the same time with CHAdeMO stations, courtesy of Quick Charge Power supplied “JdeMO””

JdeMo for Rav4EV costs $2,999 plus some other costs. In case of JdeMo for Tesla Roadster the price is expected at the same level “$2999 plus any options, taxes, installation, shipping, etc” when the product will be ready.

Around 40-50 kW charging capability would be nice thing to have, especially for cars with larger 70 kWh battery (3.0 update), for which Tesla still didn’t prepared Supercharging access. Base charging capability for Roadsters is below 17 kW (208–240 V, 70 A).

Tesla Roadster 3.0

Tesla Roadster 3.0

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18 responses to "Tesla Roadsters Charge At CHAdeMO Thanks To JdeMO – Video"

  1. Jim Whitehead says:

    Is Roadster Supercharging possible? I don’t think the car’s primitive electronics are set up for it. The 4.0 pack will need to handshake with the system. Maybe in the final release.

    1. MikeG says:

      Roadster supercharging is not possible due to the battery designed to fit in the glider, rather than build a car around a battery pack.

      As a result, battery pack compromises must be made such as inadequate cooling capabilities that prevent fast charging.

    2. The Tesla Supercharge is possible with any DC battery between 250 and 430 volts. The Roadster fits that profile (415 volt max).

      As to why Tesla has not offered it, that is anybody’s guess. Of course, the Tesla Roadster cannot handle 370 amps like my Tesla Model S can, but it can clearly take probably up to about 200 amps max. The cooling system is very robust, and has no difficulty in our tests of keeping the battery below 40C whilst charging at 125 amps.

      There are some legacy issues with the cell chemistry and architecture. The cells themselves (Panasonic 2600ma 18650) have significantly more internal resistance than cells used on later vehicles like the Toyota RAV4 EV, Mercedes B-Class ED (B250e) and Model S / X.

      The most unique issue with the Roadster battery packaging is that all the cells are potted.

      Thanks,

      Tony Williams
      R&D Manager
      Quick Charge Power LLC
      Sales (((@))) QuickChargePower.com
      http://www.QuickChargePower.com
      Twitter: QCPower
      1-844-EVPARTS
      1-844-387-2787 ext 701

      1. Chris C. says:

        Great info, thanks Tony! And congratulations.

  2. Ocean Railroader says:

    Tesla should add this to their cars like the model S in that it would avoid people trying to steel the chamo plug thing off the car while it’s charging or people forgetting about it at the station.

    But this is cool maybe they could built a universal CSS and Chamo plug which would revolutionize everything for EV quick chargers.

    1. MikeG says:

      The Tesla charge port is locked when when charging, making it impossible to steal the Chademo adapter.

      I suppose people could leave the adapter behind but they would have to first disconnect it from the car.

  3. SparkEV says:

    JDemo is probably the best thing to happen since sliced bread! Kudos to QCP (and Tony)!

  4. Bill Howland says:

    Over 3 grand and not even integrated into the car? Someone would have to want this pretty badly.

    Cops around here get suspicious when the trunk is open, and I wouldn’t leave it open in the rain or snow anyway.

    1. Bil, if you had watched the video (and paid attention), you would know that not only was this a first time PROTOTYPE, but that I specifically mentioned in the video that the charge inlet locations are temporary (and different in each car).

      We have not developed the “easy part”… simple hardware to mount the inlet. We also make it clear to customers that the inlet could be placed A-N-Y-W-W-H-E-R-E that the customer may wish.

      Heck, if I had a Roadster, I would have a quality body shop make an inlet mount on the opposite side of the current AC powered inlet.

      JdeMO for the Tesla Roadster is available starting this summer 2016. By the way, you are absolutely the very first person that thought the price was too high!!!!

      Thanks,

      Tony Williams
      R&D Manager
      Quick Charge Power LLC
      Sales (((@))) QuickChargePower.com
      http://www.QuickChargePower.com
      Twitter: QCPower
      1-844-EVPARTS
      1-844-387-2787 ext 701

    2. By the way, what are people doing with trunks in your area that make the police suspicious? It sounds like a scary place… glad I’m not there.

  5. Vexar says:

    Definitely a prototype. This answer troubles me:
    ” 6) Will it void my warranty?

    Answer: It should not void any warranty, however we do not have control of how any auto manufacturer will likely handle a warranty claim. In all likelihood, any battery failure would likely be blamed on any product connected to the battery, no matter how unlikely it actually did damage. Therefore, each JdeMO sale will require a “hold harmless” agreement that indemnifies Quick Charge Power LLC from any claim.”

    Good job doing some engineering. I’m sure a lot of Roadster owners will be considering it. However, pack degradation with the Roadsters is a real thing now, and since the fix is $30,000 from Tesla for a battery upgrade, I’m not sure this will sell too well.

    It bugs me to no end that adding Supercharger capability to the Roadster was not accomplished in the battery upgrade.

    1. Interesting points. The warranty issue pops up all the time. Thankfully, at least in the USA, Federal law has very strict guidelines on how warranty claims are handled. It may not be without a fight, but the consumer is well protected.

      Since the very first Roadsters built in 2008 may no longer have a warranty, that becomes a nonissue altogether.

      Clearly, the Roadster battery pack is not going to handle the same charge rates as newer packs. That’s just common sense for anybody who knows modern EV batteries.

      So, we have had a solution for that for some time; we include a switch which allows you to charge the battery at a significantly lower rate (yes, our Toyota RAV4 EV customers all have this option now). The AC powered normal charge rate of 16.8 KW is only slightly slower than 20kW on a CHAdeMO charger using our JdeMO equipment.

      I don’t know how many 70 amp Tesla Roadster charge stations exist in the world, but I do know there are well over 10,000 CHAdeMO stations in the world.

      JdeMO opens up a whole new world of travel and flexibility the didn’t exact exist before,

      Tony Williams
      R&D Manager
      Quick Charge Power LLC
      Sales (((@))) QuickChargePower.com
      http://www.QuickChargePower.com
      Twitter: QCPower
      1-844-EVPARTS
      1-844-387-2787 ext 701

  6. Pushmi-Pullyu says:

    Re the Roadster and Supercharging:

    I’m no electrical engineer, and even if I was, I doubt that I could identify all the barriers to making the Roadster compatible with Supercharging without talking to some Tesla engineers.

    However, I culled some bits from a Tesla Motors Club forum discussion of the issue. Note I make no guarantees about any of what is quoted below being accurate. Note each paragraph is from a separate post:

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    This question was asked at the shareholder meeting today. Elon said the Roadster doesn’t have the proper bypass relays to send the DC directly into the battery. (I hope I paraphrased that correctly).

    One basic difficulty of SC’ing the Roadster is that during charging the 10(?) battery segments are paralleled so charging is actually done @44 volts DC, not @400 volts. This function performed by the ‘two relays’ Elon spoke of.

    Roadste can only handle 72amps.

    Tesla needs to fix the bug that prevents Roadsters from drawing 70A from an 80A supply. Then a Model S to Roadster adapter would make lots of sense.

    It has a bug that reveals itself whenever the pilot signal is > 72A.

    People asking if its possible to retrofit the Roadster to have access to SuperChargers and replies are always, “no, completely different technology and require a complete redesign of the charging system and probably the battery itself”

    The roadster lacks both the hardware and software to DC charge. A newly designed PEM/HV box, charge port and a few other small items, along with the software to run it all would be needed(1.5 roadsters would also need the hardware upgraded to be on the Tesla connectivity plan). The roadster battery also uses different cells that most likely haven’t been tested for quick charging.

    The cooling system on the Roadster would have to be improved significantly to allow for supercharging unless they go to something like dry ice cooling.

    Roadster does use liquid cooling for the battery pack… The Roadster already screams like a jet engine when charging at 16.8 kW. I can’t see that little compressor keeping up at 120kW.

    The general consensus here is that SuperCharger access would require a PEM upgrade, along with a cooling upgrade.

    The pack can easily be made 100% compatible with Supercharging (well it will take some work – worst case a cooling system upgrade). It’s the rest of the car that is the problem. Power electronics. Wiring. Communications with the Supercharger. There’s no direct charger bypass contactor like on the Model S. The Roadster would need massive changes, and there isn’t a lot of room to put all that stuff either.

    Here are some things you would need to consider if YOU were to design supercharging for the Roadster. The reason I day you is that Tesla will not do this… First the plug is designed for 240V and 70 amps. Supercharging is 400V and 300 amps. So you will need a new charge port, bonded to the car and heavier wiring. Then you will need to add new heavy duty DC contactors as the current ones will not handle DC current or that amount of current. Then you will need develop a communications system for the Roadster to talk to the Supercharger. I have designed and built three EV’s and the challenges above are significant as the parts are not available.
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Discussion thread here: http://www.teslamotorsclub.com/showthread.php/10409-Supercharger-for-the-Roadster-%28Elon-said-No-%29

    1. SparkEV says:

      Since QCP has it working with Chademo, I’d say electrical bits at 400V are done. Cooling is another matter, though I’d think QCP has considered it.

      Even 120kW can be throttled down to less than 50kW with taper. Roadster can simply taper much more quickly to accommodate less cooling.

      I don’t know why he makes it sound so hard for Tesla when a third party shop has done something like it. Or maybe that third party shop is brilliant kick-ass outfit. I’m definitely a fan of QCP for what they do.

    2. That post from TMC sounds like a “glass half empty” versus a “glass half full”

      What is the simple answer?

      1) Put in the relays. Ours are 800 amp capable (and the same ones that Tesla uses for the main battery contactors on Model S)

      2) Put in the wiring. We use 2 gauge. It’s neither difficult, nor expensive. It’s somewhat pathetic that anybody would complain that the wire size as a reason for not doing a project

      3) Regulate and monitor temperature. This is not rocket science; the battery is well equipped with all the battery temperature sensors required for this job. In addition, the cooling system does an OK job , too.

      4) Use the proper charge inlet. Ours is rated for 500 V at 125 amps by UL. You’ll find that the Tesla Supercharger inlet is not UL.

      5) Bitch slap any whiny person who can dream up sad little reasons for not doing something as opposed to seeing the challenge and getting it done.

      Tony Williams
      R&D Manager
      Quick Charge Power LLC
      Sales (((@))) QuickChargePower.com
      http://www.QuickChargePower.com
      Twitter: QCPower
      1-844-EVPARTS
      1-844-387-2787 ext 701

      1. Nix says:

        LOL at number 5!! awesome!

        1. ModernMarvelFan says:

          I like the #5 the most as well.

          LOL.

          +5.