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LiBAL n-BMSは、新通信方式 isoSPIをベースに開発されたネットワークBMSです
この方式の大きな特徴は、BMS通信ネットワーク上のセル監視ユニットに、独立したプログラム可能なプロセッサーを必要としないことです。これにより、市場でのメンテナンスが画期的に簡略化され、価格競争力の高い通信ネットワークを作ることができます。
n-BMSは、関連する全ての自動車要求基準に合致するように開発され、機能安全規格ISO26262を満足しています。プロセッサー、ASIC、PSUといった重要部品は、機能安全規格ASIL Cレベルに適合するものが慎重に選ばれています。
システムは、マスターコントロールユニット（MCU）と最大32個連結可能なセルモニターユニット（CMU）から構成されています。各CMUは、12セルまで、システムでは最大直列384セルまでモニター可能です。
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| ドキュメント名 | ネットワークBMS LiBAL n-BMS |
|---|---|
| ドキュメント種別 | 製品カタログ |
| ファイルサイズ | 793Kb |
| 登録カテゴリ | |
| 取り扱い企業 | LiTHIUM BALANCE A/S (この企業の取り扱いカタログ一覧) |
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このカタログ（ネットワークBMS LiBAL n-BMS）の内容
Page 1:LiBAL n-BMS™Networked Battery Management SystemSAFETYISO 26262 rated components and designSelf-test and redundancy in safety critical measurement circuitsOpen circuit detectionBATTERY LIFEHigh frequency sampling of current (down to 20 mS) allows optimaldetection of pulsesPowerful and intelligent passive balancing at 200mA per cell-40° to 85°C operational rangePERFORMANCE±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 configurationOpen API to build unique BMS codeOptional current sensing (Hall effect or Shunt)CAN UDS toolAutomotive BMS for:• Pure Electric vehicle• Hybrid Electric vehicle• High Performance Electric vehicle• Electric motorbikesApplicationsINTRODUCTIONThe networked LiBAL n-BMS has been developed around thenew communication standard isoSPI, which essentially doesnot require independent programmable processors on boardthe slaves in the BMS network. In any application, this is ahuge advantage, because it does not require software onthe slave processors, and therefore greatly simplifies in-fieldmainte-nance. In addition, the isoSPI communication networkfacilitate the most cost efficient communication circuit inthe market.The n-BMS is developed to meet all relevant automotiverequirements. ISO 26262 compliant design with key compo-nents such as Processor, ASIC and PSU are carefully selectedto meet the safety standard at ASIL C rate.The system consists of a Master Control Unit (MCU) and upto 32 Cell Monitoring Units (CMU’s), that each monitor up to12 cells in series equal to total 384 cells in series.The n-BMS can reach temperature accuracy up /-1 °C andcell voltage measurement accuracy of /- 1.5 mV, throughoutthe entire temperature range (-40 to 85 °C).The BMS Creator™ software, enable the battery designer tocreate a unique BMS based on the n-BMS hardware. Withthe BMS Creator a customized application dedicated safetystrategy, battery performance as well as battery life, canbe achieved.
Page 2:www.lithiumbalance.comcontact@lithiumbalance.comTel: 45 5851 5104LiTHIUM BALANCE A/SHassellunden 132765 Smørum, DenmarkLitt.no.LIT0006LiBAL n-BMS™Networked Battery Management System18,0315,8031,5092,0015,804,008,00118,15104,0088,0013,5011,0015,00R3,00ø4,3029,00n-BMS MCU n-BMS CMU151,0096,00166,1068,00 8,0019,8016,4312,5332,7015,8036,2524,2392,006,754,00ø4,30Dimensions in MMPARAMETERS SPECIFICATIONSMaster Control Unit (MCU)Power supply 6-35 VNumber of CMU’s supported 1-32 Number of CMU’sRange of high voltage measurement 0 - 1000 VDCAccuracy of high voltage measurement ±1 VDCRange of current measurement input Shunt ±150 mVAccuracy of current measurement input Shunt ±1.0 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) ±1.5 mV -40 – 85 °CAccuracy of temperature (NTC) ±1 °C -40 – 85 °CGround fault detection (leakage) levels 250/500/1000 Ω/V Between GND and HV /-Standby consumption (MCU/CMU) MCU <8.5 mW at 12 V supply voltage /CMU: <7 µA for each cellActive consumption (MCU/CMU) MCU <3.5 W at 12 V supply voltage /CMU: <8.5 mA for each cellSupported CAN communication type CAN 2.0A/B 11 bit and 29 bit IDsSupported CAN speeds 125, 250, 500, 1k kbit/secNumber of CAN ports 2, one isolated CAN, one non-isolated CAN.External GPIOs 16 (Active Low)Charger control interfaces CANCell Monitoring Unit (CMU)Number of cells per unit 3-12 Cells. Cells (minimum 11 V, to power the CMU).Minimum 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 °CCommunication interface (Internal) isoSPI Maximum 5m cable length between boards.Patents ZT 200780048774, EP 0781788.6, US 8.350.529