I finished work on remaking the battery. Battery had three assemblies of 16 cells in series. That were are connected in parallel.(16S/3P) Prismatic packages A123 20 A/H
I decided to pick up the battery voltage to 78 volts. For this, I middle the assembly parted into two parts, each with 8 cells. And added to the two assemblies are 8 cells. The result was a configuration 24S/2P.
Maximum speed increased to 72 km/h.
And also i ordered BMS 24S/100A rated current from BMS_Battery http://www.bmsbattery.com/bmspcm/378-17 ... t-bms.html
In this BMS installed low quality mosfets with high-resistance channel. This has caused a strong heating BMS at maximum current (100A)
But I solved the problem.I connected the controller power cable to the battery directly, through a fuse, bypassing BMS. Logic Plus of controller is connected through a relay that is connected to the battery through the BMS.