コンパクトBMS LiBAL c-BMS

Page 1:LiBAL c-BMS24™Compact Battery Management System for 24 cellsSAFETYISO 26262 rated components and designSelf-test and redundancy in safety critical measurement circuitsOpen circuit detectionBATTERY LIFEHigh frequency sampling of current at 100 mS allows optimal detectionof pulsesPowerful and intelligent passive balancing at 200 mA per cellPERFORMANCE±1.5 mV accuracy in the complete temperature range (cell voltage)Optimized low power consumption mode±1 °C accuracy in temperature measurementUSABILITYRTC logging of events, errors and warningsBMS Creator PC tool for easy configurationCompact BMS for:• Light Electric Vehicles• Industrial Machines• Robots and AGV’s• Drones and UAV’sApplicationsINTRODUCTIONThe compact LiBAL c-BMS24 is developed to meet all relevantautomotive requirements. ISO 26262 compliant design withkey components such as Processor, ASIC and PSU are carefullyselected to meet the safety standard at ASIL C rate.The c-BMS24, with its powerful dual core safety rated proces-sor and state of the art application specific integrated circuit(ASIC), can reach temperature accuracy of /-1 °C and cellvoltage measurement accuracy of /- 1.5 mV, throughoutthe entire temperature range (-40 to 85 °C).The BMS Creator™ software ensures, that the battery designercan create a unique BMS based on the standard cost opti-mized hardware. The battery designer can define a uniqueand application dedicated safety strategy, optimizing batteryperformance and battery life, which are achievable with thechosen Lithium cell.The c-BMS24 is cell agnostic both in terms of form factor andchemistry and thus enables a full sourcing flexibility therebyreducing the design risk. With a standardized volume producedPCBA platform and automotive grade high quality componentsthec-BMS24becomeaverycostefficientandcompactsolution.The BMS has a very compact design and measures only 70 x150 mm, while monitoring up to 24 Cells, covering 48V applica-tions with any cell chemistry and up to 72V with LFP or NMC.

Page 2:www.lithiumbalance.comcontact@lithiumbalance.comTel: 45 5851 5104LiTHIUM BALANCE A/SHassellunden 132765 Smørum, DenmarkLitt.no.LIT0007LiBAL c-BMS24™Compact Battery Management System for 24 cellsPARAMETERS SPECIFICATIONSPower supply 6-35 VRange of high voltage measurement 0 - 120 VDCAccuracy of high voltage measurement ±1 VDCRange of current measurement input Shunt ±200 mVAccuracy of current measurement input Shunt ±0.5 mV -40 – 85 °CRange of current measurement input (Hall effect sensor) 0.0 – 5.0 V, 0.0 -2.5 V current in, 2.5 V – 5.0 V current outAccuracy of current measurement input (Hall effect sensor) ±1.25 mV -40 – 85 °CAccuracy of temperature (NTC) ±1 °C -40 – 85 °CStandby consumption (sleep mode) <1.9 mWActive consumption <2.7 WSupported CAN communication type CAN 2.0A/B 11 bit and 29 bit IDsSupported CAN speeds 125, 250, 500, 1k kbit/secCAN ports 1 non-isolated CAN.External General Purpose I/O’s 4 GP I/O (Active Low) and 4 inputsCharger control interfaces CANNumber of cells Up to 24 Cells. Minimum 11 VMinimum detectable cell voltage 0 VDCMaximum detectable cell voltage 5 VDCCell balancing topology DissipativeCell balancing current 200 mA, at cell voltage 4.2 VCell voltage typical sampling time 100 ms (Down to 20 ms is possible)Accuracy of single cell voltage ±1.5 mV from -40 to 85 °CRange of Temperature measurements -40 to 85 °CAccuracy of cell temperature (NTC) ±1 °C -40 – 85 °CPatents Granted: ZT 200780048774, EP 0781788.6, US 8.350.529c-BMS Compact Battery Management System for 24 cells120612101210121012101210120615,50 20,8070,0023,5518,50150,0023,50 27,90 41,10ø4,306,9013,80Dimensions in MM