LiPo & LiFe, LiTo Battery Management System BMS8T V4.1
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Table of Contents
Safety Notes ..................................................................................................................................................................5
Warning ...................................................................................................................................................................5
Copyright ................................................................................................................................................................5
Specifications ................................................................................................................................................................6
Protection functions ....................................................................................................................................................6
Version History .............................................................................................................................................................7
Update / Change log ..................................................................................................................................................8
Order information........................................................................................................................................................9
Standard accessories .........................................................................................................................................9
Current Shunt .....................................................................................................................................................10
Optional accessories.................................................................................................................................................11
Relay delay time board....................................................................................................................................11
DC Contactor .......................................................................................................................................................11
Cold pressing copper tube terminal............................................................................................................12
Operational Description...........................................................................................................................................13
Special Features.........................................................................................................................................................14
Interface........................................................................................................................................................................15
Hardware Setup .........................................................................................................................................................17
Absolute maximum or Minimum ratings (Always refer to Manufacturer specifications)........17
Software Configuration............................................................................................................................................18
Parameters Setting----Configuration Values...................................................................................................19
Operating guideline...................................................................................................................................................22
SOC Calibration ..........................................................................................................................................................25
Balancer ........................................................................................................................................................................27
Balancing Indicator ...........................................................................................................................................28
Cell internal resistance (Impedance) test........................................................................................................29
Charge and discharge relay lectotype for BMS8T .........................................................................................31
Chargery DC Contactor Specifications.......................................................................................................32
Cold pressing copper tube terminal Specifications...............................................................................34
Chargery DC Contactor (DCC) configuration in Common and Separate Port.............................35
Current Calibration (Shunt)...................................................................................................................................36
Firmware Upgrades via USB Port.........................................................................................................................38
Update BMS main unit .....................................................................................................................................39
Continue to update LCD unit.........................................................................................................................39
Typical Cell Connections..........................................................................................................................................41
2S-4S configuration and 8S configuration ...............................................................................................41
4s & 4s with single BMS8T configuration example...............................................................................42
6P4S 24 cells with single BMS8T configuration example...................................................................43
Nissan Leaf battery 6P8S with BMS8T configuration example .......................................................43
Separate Port Configuration example—with Chargery DCC......................................................................44
Separate Port Configuration example—with Mechanical relay.................................................................45
Common Port Configuration example—with Chargery DCC......................................................................46
Common Port Configuration example—with Mechanical relay.................................................................47
4p4s Cell configuration with BMS8T-600 example .......................................................................................48
4s packs with 3 in parallel connection using 3 BMS8T's example ..........................................................49
