EBike Quick Charge: Ultra-fast charging battery to substitute for Specialized SL Extender battery? Logarithmic Charging Strategy.

BikeMike

Active Member
Samsung understands ultra fast charging as well as any company. The issue why eBikes lack ultra fast charging is certainly not technology. Go where the evidence takes you, is my motto.

The new name, [Samsung SDI] stands for Samsung with the initial letter S, 'Display' and 'Digital' with D and 'Interface' and 'Internet Component' with I.


  • Samsung SDI Battery Pack for E-Bike - Reduce recharging time

    Reduce recharging time
    Samsung SDI is developing a quick charging technology that could
  • reduce the recharging time from 150 to 30 minutes
  • to fully recharge the battery, making the E-bike more convenient for users.

  • Extend driving distance with regenerative charging
    The regenerative charging converts otherwise wasted energy while driving on a downhill road into electricity and may further extend the driving distance of the E-bike.
  • Samsung SDI Battery Pack for E-Bike - Reduce recharging time

    Reduce recharging time
 
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BikeMike

Active Member
 

BikeMike

Active Member
Iron phosphate batteries will increase range of Teslas.


Their new batteries would allow electric cars to travel for 400 miles or more before needing to be recharged and would be super durable, lasting as long as one million miles in its lifetime. The impact of this innovation on the EV market and the future of the EV industry would be hard to overstate. “That could spur EV sales the same way the first 100,000-mile warranties on gas cars once did,” writes CNN.
 

FlatSix911

Well-Known Member
Region
USA
City
Silicon Valley
Example of long distance travel in a Tesla. Supercharging seems to make a profound difference.


Hi Mike, keep in mind that a high DC charging rate decreases the lifespan of the batteries in Tesla EVs.
In fact, Tesla throttles back the DC charge rate on older battery packs to prevent accelerated degradation.

I limit my Supercharging for this reason and also 240V charge at lower Amps to increase the lifespan. YMMV.
 

BikeMike

Active Member
Tesla Wall Connector 240 x 60 = 14kW = 60 miles per hour of charging

Tesla About twice Specialized SL internal and Extender rate of 34 (120 miles / 3.5 hr)
Ultra fast charging 3C battery pack Extender replacement might = 34 * 4 ~ 120, or perhaps twice Tesla at home, from 30% to 70% charge, very roughly speaking.

1C = 1hr, 3C = 15min

Also known as the High Power Wall Connector (HPWC), this is the charging option that Tesla recommends as the best home-charging tool for Model S, Model X and Model 3. It uses a 240 Volt power supply and, depending on the Tesla model, works best on a 60 or 40 amp circuit breaker.May 8, 2020
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https://www.solarreviews.com › blog
 
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BikeMike

Active Member
Hi Mike, keep in mind that a high DC charging rate decreases the lifespan of the batteries in Tesla EVs.
In fact, Tesla throttles back the DC charge rate on older battery packs to prevent accelerated degradation.

I limit my Supercharging for this reason and also 240V charge at lower Amps to increase the lifespan. YMMV.
How does your ebike charge compared to your Tesla?

I just made a rough estimate in the previous post. Is it realistic to expect a 3C eBike battery pack to charge twice as fast as a Tesla from home?

My interest is from a transportation perspective. I see eBikes as viable transportation, rather than marginalized recreational vehicles.
 
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FlatSix911

Well-Known Member
Region
USA
City
Silicon Valley
Most Tesla owners have their HPWC on a 40 amp circuit so the charging rate is 30A... half your 60A charging rate. (7kW vs. 14kW)
I'm not sure how this would compare to charging to the average eBike... keep in mind that Tesla has a liquid-cooled battery pack.

I think it would be best to discuss the higher C-rates with Ravi... he is the subject matter expert on Lithium batteries here on EBR. ;)
 
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BikeMike

Active Member
Most Tesla owners have their HPWC on a 40 amp circuit so the charging rate is 30A... half your 60A charging rate. (7kW vs. 14kW)
I'm not sure how this would compare to charging to the average eBike... keep in mind that Tesla has a liquid-cooled battery pack.

I think it would be best to discuss the higher C-rates with Ravi... he is the subject matter expert on Lithium batteries here on EBR. ;)
OK. Not very important. I have a general sense. So many variables that only approximations matter. 3C or higher difference is substantial.
 

BikeMike

Active Member
A cyclist's minivan used as camper .

Appliances that add high value per square inch are listed below.

Modular electrical system a la Egoe style (https://uncrate.com/nestbox-camper-module/ ).
  1. Camper designed around electrical system.
    1. MB diesel Sprinter, 4WD
    2. Toyota Sienna AWD
  2. Electrical system dictates camper livability. Minimal requirements:
    1. Subfloor with radiant heater
    2. Outlets to power electric blanket and appliances
    3. Lighting in ceiling or walls
    4. Recharge eBike battery
    5. Water heater
  3. A J1772 outlet to charge camper battery from EV stations
    1. 720 aH @ 12v = 60w, 72A = 10H full charge time ( J1775 80A max)
  4. How much sailing hardware is appropriate?
  • Fast charging battery system:
    • 540W of solar panels (3)
    • 3500W Pure Sin Wave Inverter (2.5 hours of driving to recharge battery)
    • 5kW diesel heater
    • eBike (2' x 6' space)
    • Lighting
    • Small induction stove
    • Small Microwave
    • Refrigerator same dimensions as stove
    • Water heater for shower
    • Sound system
    • Internet Connection
    • Heating, Cooling and Ventilation
      • Tradeoff between roof exhaust fan and solar panels
      • Carbon monoxide detector
 
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BikeMike

Active Member
Information rich report that goes a long way towards explaining slow eBike charging rates.
  • What and how much are consumers willing to pay for?
  • How much discrepancy between what is and will delayed indefinitely?
  • Can 3C eBike battery packs be implemented without cooling?
    • Haibike Flyon TQ Systems 3C has cooling.
    • How limited in hot sun or cold nights?


The possible charging performance of EVs depends highly on the charging rate that a manufacturer allows for the ba ery. Today’s maximum allowed charging rate is typically 2C (meaning twice its capacity per hour) in order to not damage the ba ery or limit its lifespan. To reduce charging times, automotive manufacturers are working on extending the charging rate up to 3C (or even beyond), e.g. by using optimised cell cooling.

The business case for UC (ultra-E use case) is an investment in the future due to high capital and operational expenses and a still slow growing EV market, that will signi cally turn with the imminent greater availability of EV models.
• High hardware and installation costs due to new technology.
• High grid connection costs due to large grid connections needed at UC locations. High variation depending on grid operator and country, which leads to uncertainty.
• Grid fees/Energy costs, beyond the energy consumption itself, also the utilization of the grid causes costs which are linked to kWh of consumption and kW of used capacity. This means, when mass adoption of EV happens, grid operational costs will grow tremendously and will have a main impact on UC costs.
• Moderate revenue, rooted in the fact that the UC infrastructure investments will precede the growth in EV sales and associated charging demand.

There is currently a signi cant di erence between the users’ willingness to pay for UC charging and the expected prices for the service o ering. The lack of experience with UC on the user side combined with very high investment costs for CPOs make it di cult to match the UC o ering to user expectations.
 
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BikeMike

Active Member
I really like this Hyundai H350 Camper van. It has a diesel heater.

I like the way the Egoe bed frame snaps together. The bed slats slide out to conform to the minivan interior.



Before the conversion, the Hyundai 350 already touted a 168-hp diesel engine, with modern driving technology that adds to its sleek and high-tech feel.

all while maintaining a control system that is entirely tablet-based.

This tablet controls everything in the interior from water to temperature to the lighting to monitoring the battery.

The inside of the Hyundai Campervan is made from a high-pressure laminate, whose light color adds to the airiness and modernity of the van. The camper van can both safely and comfortably seat and sleep four individuals, due to the fact that it has two beds, a pop-up roof mattress, and a mattress in the rear of the van. In addition, it has swivel driver and passenger seats, along with a two-seater bench, to easily accommodate multiple people.

Camperliebe did not sacrifice comfort or utility for compact space utilization. The van has both a bathroom and a kitchen, both fully equipped yet simultaneously slim, so as to not add a significant amount of space. The bathroom has a shower, sink, and toilet, and the kitchen has everything from a stove to a refrigerator to yet another sink. The van also is home to a full awning, a 95-Ah AGM battery, heater, and both gray and black water holding tanks.

 
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FlatSix911

Well-Known Member
Region
USA
City
Silicon Valley
I really like this Hyundai H350 Camper van. It has a diesel heater.

I like the way the Egoe bed frame snaps together. The bed slats slide out to conform to the minivan interior.






You may be interested in this E-350 Van Tour by my favorite MTB racing couple... Syd and Macky. ;)

 

Art Deco

Well-Known Member
Region
USA
City
Selinsgrove Pennsylvania
I really like this Hyundai H350 Camper van. It has a diesel heater.

I like the way the Egoe bed frame snaps together. The bed slats slide out to conform to the minivan interior.





There is a thread on hauling with your van as well here on EBR . I have a high top van to hang the bikes from ... I hope.
 

Art Deco

Well-Known Member
Region
USA
City
Selinsgrove Pennsylvania
There is a thread on hauling with your van as well here on EBR . I have a high top van to hang the bikes from ... I hope.
Anyway how off topic is this thread about quick chargers? I need to recharge the bikes from either a hundred app hour battery in my van or a pair on solar panels on the roof or the occasional laundry or campground with 110 service.
 

Art Deco

Well-Known Member
Region
USA
City
Selinsgrove Pennsylvania
Anyway how off topic is this thread about quick chargers? I need to recharge the bikes from either a hundred app hour battery in my van or a pair on solar panels on the roof or the occasional laundry or campground with 110 service.
Thinking it would be ok to recharge bikes overnight with an inverter from the 12 volt system, but fast charging is a big issue when shore power is available.