[asymptonic]

Anyone seen these guys before? Guessing they'll only wind up selling to large orgs but new to me.

 

[brian_]

I don't recall them. They certainly appear to be aiming at manufacturers, not hobbyists. The modules are all VDA 355 format, which is available from multiple manufacturers and used in multiple production EVs. All VDA 355 modules appear to have 12 pouch cells (and similar capacity); Kore has the common 3S4P and 4S3P configurations, plus the less common 6S2P for small-battery or lower-voltage applications.

 

[joekitch]

16, in series, of those 2p6s ones gets you 355v nominal and 37khw and only weighs 176kg/388lbs, that seems pretty dang good?

i just shot them an inquiry about buying modules in smaller quantities,like 16 for one person, or 40 as part of a group buy

 

[brian_]

16, in series, of those 2p6s ones gets you 355v nominal and 37khw and only weighs 176kg/388lbs, that seems pretty dang good?

Yes, the energy density is typical of VDA 355 modules, which weigh about 11 to 12 kg and are generally rated around 2.3 kWh.

For 360 V applications (typical production EV nominal voltage, so suitable for most salvaged EV motors) the combinations would be

• 16 @ 6S2P for 37.6 kWh
• 24 @ 4S3P for 56.5 kWh
• 32 @ 3S4P for 75.3 kWh

Production EV examples of different configurations:

• The Jaguar I-Pace uses 36 LG Chem modules of this format (rated at 2.5 kWh) in 3S4P for 90.2 kWh, at 389 V.
• The Porsche Taycan uses 6S2P modules of this format in almost double the usual number for its high-voltage configuration: 33 modules rated (optimistically?) at 2.8 kWh each for 93.4 kWh at 723 V.
• The VW e-Golf appears to use a combination of some modules of this format in 4S3P plus some half-size modules to add up to equivalent of 22 full modules, for 24 or 35.8 kWh (depending on year), or only 1.1 to 1.62 kWh per module.

 

[brian_]

i just shot them an inquiry about buying modules in smaller quantities,like 16 for one person, or 40 as part of a group buy

For comparison, you might want to check out specs and prices for alternate VDA 355 sources:

• Zero EV - LG Chem 3S4P
• Zero EV - CALB 4S3P
• Zero EV - CALB 6S2P
• Electric GT OX Drive Energy