max peak power/tourque QS60V5000W 13" Hubmotor or Xiamen ZAP Erider 8kW

[dominik h]

I want to change the controller in my scooter from a Sabvoton SVMC72150 (350pA /peak battery power 14kW) to a Fardriver ND96850 (850pA).
The 21S100Ah Li-NMC battery is capable of continous 800A . The BMS is limited to 200A continous and 350A/60seconds.
With the Sabvoton the scooter is lacking power from a standstill. Scooter weight aproximatly 180kg.
During accerleration it draws up to 14kW from the battery.


How much peak power (tourque) can be achieved with a QS60V5000W Motor , the motor has 16mm phase wires.
Must be similar to this motorhttp://www.cnqsmotor.com/en/article_read_1104.html

I have driven the 5000W motor a short time with a SVMC72260, but the controller blew up during a no load test on the main stand with activated flux-weakening.
The controller was set to 450pA, but was still lacking tourque. Peak battery-power was 17kw.

I also have also a "8kw" Xiamen ZAP / Erider motor which has 2x6mm (perhaps 8mm) phase wires. This motor was origninally powered from a sevcon gen 4 180A with a 72V battery.
I do not know if this motor can reach higher power levels, and can´t find any infos for this motor.

Both motors do not have a temperature sensor, so I can´t measure inside the motor.
During driving uphill I reached already 180C phase wire temperatur with the QS motor.

Has anyone an idea how many phase amps this motor a hab take?

 

[phil o' dendron]

Hi,

two threads for you with useful information:
https://endless-sphere.com/forums/viewtopic.php?f=30&t=99709
https://www.endless-sphere.com/forums/viewtopic.php?f=3&t=29902

TL;DR: "John in CR" fed such a hub with 425A (battery) and 550A (phase) @ 20s.
The motor has a kv of about 18 rpm/V, so you can calculate how much torque per ampere (phase) you can expect.


I bought a damaged scooter to get such a hub motor as an upgrade for my scooter (licensed as motorcycle)
replaced a hall sensor and got the damaged scooter running (60V LiFePo4, Sevcon Gen4 80V 180A),
could only do a short test ride because of missing and damaged fairing, but the torque and power at start was not amazing.

The donor scooter looked similar to this but had a different brand (can't remember):

And that's where the hub is now, used as a temporary replacement in a hopefully half way done cargo bike.
The incredible slow wound "48V3000W" 13" QS hub is the better choice for the cargo bike, but the motor has a mechanical
problem (loose magnet?), it makes a knocking noise once per rotation.


hope this helps. cheers!

 

[dominik h]

Looks like mine
The sportivo was with smaller controller and only 1x6mm phase wire mine has 2x6mm per phase.
I got the version called "Extremo"

 

[phil o' dendron]

that is a serious battery pack you shoved in there :thumb:

where are the cells from?

 

[dominik h]

Cenat 20Ah Power Pouch Cell 21S5P
Continous 8C Discharge and 5C charge
73kg with 120mm copper connectors and 252 M4 screws. 13mOhm measured at the controller, including BMS , wiring and fuse. Voltage sag 2,2V @165A

I had to lenghten the wheelbase and the battery housing for the battery by 4cm.

This will be my "new" charger setup for fast charging.
10kw 125A 6x Elteck Flatpack2 2kw

 

[phil o' dendron]

niiice, thanks!