GRA
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Joined: Mon Sep 19, 2011 1:49 pm
Location: East side of San Francisco Bay

GCR: With portable EV fast chargers, could backup juice be as easy as pizza delivery?

Mon Jul 15, 2019 7:04 pm

https://www.greencarreports.com/news/11 ... a-delivery
. . . SparkCharge is a startup that won the top $1 million prize at the 43North pitch competition in 2018. It aimed to create something that provided ultra-fast charging to help fill the gaps left by the lack of charging infrastructure, in a product that was modular, reasonably lightweight, and easily transported.

That yet-unnamed product, so far called “Portable, Ultrafast, Modular Electric Vehicle Charging Unit,” is what SparkCharge delivered last week, as part of a demo day for its current base, which claims to be the largest cleantech startup incubator in the U.S.—Greentown Labs in Somerville, Massachusetts.

The charger module weighs an official 19.8 pounds while the battery module weighs 48.4 pounds. Both are approximately 24 by 13 by 9 inches, which makes them about the size of a large carry-on suitcase—so a size that should easily fit into the cargo compartment of just about any vehicle.

The system has a battery module that holds 3.5 kilowatt-hours (3.2 kwh usable) and can provide 20 kw of maximum continuous power. The charger module allows a maximum continuous 40 amps out, and a maximum 500 volts.

For energy storage, the units are packed with small cylindrical lithium-ion cells in the 18650 format—the “commodity” format used in the Tesla Model X and Model S, for instance—but the company asserted to Green Car Reports that “this is not the secret sauce that allows our charger to charge at a rate of 1 mile every 60 seconds.”

SparkCharge devised its solution to be modular—meaning you could stack as many of the battery modules as you wanted—and it says that the unit is one of the first chargers on the market that isn’t tied to a grid-connected station.

The company says that it is currently talking to “some of the most distinguished names in the automotive industry,” there could be multiple scenarios for using such a solution—as an on-demand “pizza delivery” solution ordered via phones or smart devices; as a tool for roadside assistance; or as a perk for a brand’s concierge service.

Although the SparkCharge units could feasibly be something that’s sold to customers eventually—or, perhaps, provided with a vehicle, not unlike the Rivian auxiliary-battery solution recently confirmed—SparkCharge is envisioning them as something that would be provided by roadside assistance or something you’d order via a smartphone app. . . .

According to the company’s spec sheet, its DC fast charging hardware supports CHAdeMO protocols and will soon support CCS (Combo).

Although 3.2 kwh of energy isn’t a lot in the terms of today’s long-range EV battery packs—or even 6.4 kwh, if you were to stack a couple of battery modules—a solution like SparkCharge could indeed provide a “last few miles” solution to help fill the gaps and get a few more people to put aside their range concerns and get into electric cars.
Assuming you could buy or rent these when needed, this could be one "good enough" solution for degraded battery packs, and even with a new battery one or two of these might boost the range enough to allow trips that were otherwise unfeasible. Obviously, you're adding cost and weight and reducing cargo volume, but it might be a better option for some, compared to a bigger battery that they'll rarely use or can't afford.
Guy [I have lots of experience designing/selling off-grid AE systems, some using EVs but don't own one. Local trips are by foot, bike and/or rapid transit].

The 'best' is the enemy of 'good enough'. Copper shot, not Silver bullets.

GerryAZ
Gold Member
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Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: GCR: With portable EV fast chargers, could backup juice be as easy as pizza delivery?

Mon Jul 15, 2019 7:16 pm

3.2 kWh would give about 10 miles of additional range. It would probably be just enough energy to charge a dead LEAF to about the very low battery warning level and thus allow it to go into ready mode. At 20 kW charging rate, the entire energy in the "suitcase" would be transferred to the car in about 10 minutes.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL Plus purchased 8/10/2019

Oilpan4
Posts: 1394
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: GCR: With portable EV fast chargers, could backup juice be as easy as pizza delivery?

Mon Jul 15, 2019 8:51 pm

I have a 17.5kw generac trailer and a home chadmo. The little chadmo puts out about 7kw on a nearly dead leaf battery, then peaks at 8.2kw before tapering off
But that generac can easily handle teslas biggest evse that I'm aware of which was or is 8kw.
If any one makes a charge to order app I will sign up as a provider.

Sounds like this 3kwh charge box is vapor for the time being.
trumpvirus
Is going to get you.

GRA
Posts: 11785
Joined: Mon Sep 19, 2011 1:49 pm
Location: East side of San Francisco Bay

Re: GCR: With portable EV fast chargers, could backup juice be as easy as pizza delivery?

Wed Jul 17, 2019 4:57 pm

GerryAZ wrote:3.2 kWh would give about 10 miles of additional range. It would probably be just enough energy to charge a dead LEAF to about the very low battery warning level and thus allow it to go into ready mode. At 20 kW charging rate, the entire energy in the "suitcase" would be transferred to the car in about 10 minutes.
I'm thinking 11 or 12 miles, but I think just one would be like a emergency reserve. Two would be needed to make a significant difference. and more than that gets into some serious extra weight and bulk.
Guy [I have lots of experience designing/selling off-grid AE systems, some using EVs but don't own one. Local trips are by foot, bike and/or rapid transit].

The 'best' is the enemy of 'good enough'. Copper shot, not Silver bullets.

Oilpan4
Posts: 1394
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: GCR: With portable EV fast chargers, could backup juice be as easy as pizza delivery?

Tue Jul 30, 2019 5:25 pm

Probably be easier to call in a flat tow charge, as long as you don't go beyond turtle mode.
trumpvirus
Is going to get you.

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