STEVAL-BMS114

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基于L99BM114的电池管理系统模块

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STEVAL-BMS114是一款电池管理系统 (BMS) 评估板，可处理1到31个锂电池节点。每个电池节点可以管理4到14个电池单元，电压范围在48 V到800 V之间。

该评估板基于L99BM114，这是一款多节电池监控和均衡IC，广泛应用于交通运输和工业领域。

L99BM114的主要功能是通过堆叠电压测量、电池电压测量、温度测量和库仑计数来监控电池和电池节点的状态。测量和诊断任务可以按需执行或定期执行，周期间隔可编程。测量数据可供外部微控制器执行电荷平衡，并计算电池的充电状态 (SOC) 和健康状态 (SOH)。

标准BMS的主要功能是监控和保护电池组。

监控功能与电池电流、电压和温度的测量有关。保护功能可以在欠压、过压和过热的情况下让系统进入安全状态。

STEVAL-BMS114提供了精细的监控网络，用于检测每个电池单元的电压、电流和温度。

STEVAL-BMS114可以在两种不同的菊花链拓扑中工作：单路访问和双路访问环配置。

在单一访问的菊花链配置中，一系列的AFE通过一个连接到STEVAL-BMS114隔离式ISOLport的单一收发器连接到MCU板。AFE之间通过隔离式ISOH端口相互连接。

MCU通过SPI协议与集成L99BM1T收发器的STEVAL-BMS1T进行通信。收发器将这些信号转换为ISO SPI信号，以与BMS进行通信。

STEVAL-BMS1T支持将SPI信号转换为隔离SPI信号，从而将所需的线缆数量从4根减少到2根，并通过实现差分通信来增强抗噪性能。

  • 所有功能

    • 搭载L99BM114多节电池监控和均衡IC
    • 监控每个电池单元和整个电池节点的电压
    • 监控每个电池单元的电压、电流和温度
    • 5个GPIO用于连接NTC温度传感器
    • L99BM114内置NTC，用于检测芯片温度
    • 被动均衡
    • 尺寸紧凑：100 mm x 76 mm

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The current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Marketing description of the package type.Compliancy of the device with industry requirement domains (IRD)The RoHS status of a product:
ECOPACK 1: Initial grade to identify European RoHS compliant products.
ECOPACK 2: New grade to identify brominated chlorinated and antimony oxide flame retardant free products.
ECOPACK 3: Halogen free RoHS exemptions free products.
(*): ECOPACK 2 version available upon request.
(**): Some versions still existing in ECOPACK 1 or not compliant.Compliancy with WEEE Directive (2012/19/EU)Longevity Commitment in yearsLongevity Starting DateThe current status of a product:
Active: Product is in volume production
Evaluation: Product is under characterization. Limited Engineering samples available
Preview: Product is in design stage
Target: Product is in design feasibility stage.No commitment taken to produce
Proposal: Marketing proposal for customer feedback.No commitment taken to design or produce
NRND: Not Recommended for New Design.Product is in volume production only to support customers ongoing production.Budgetary PriceMain country of assembly or fabrication of the product.ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes. ECCNs are five character alpha-numeric designations used on the Commerce Control List to identify dual-use items for export control purposes.