原标题：Intersil ISL94202锂电池组监测方案

　　Intersil公司的ISL94202是锂电池组监测集成电路,支持三到八个电池组,支持锂离子 CoO2, 锂离子Mn2O4和锂离子FePO4化学电池,提供完整的电池监测和电池组控制,具有自动关断和恢复以及自动控制电池组的平衡,不需要微控制器.主要用在电动工具,电池备份系统,小型电动车,手持设备,能量存储系统,太阳能农场,医疗设备,监视设备和通风设备.本文介绍了ISL94202主要特性,功能框图和应用框图,以及评估板ISL94202EVKIT1Z主要特性和测试框图,电路图,材料清单和PCB设计图.

　　The ISL94202 is a Li-ion battery monitor IC that supports from three to eight series connected cells. It providescomplete battery monitoring and pack control. The ISL94202 provides automatic shutdown and recovery fromout-of-bounds conditions and automatically controls pack cell balancing.

　　The ISL94202 is highly configurable as a stand-alone unit, but can be used with an external microcontroller, whichcommunicates to the IC through an I2C interface.

　　ISL94202主要特性:

　　• Eight cell voltage monitors support Li-ion CoO2, Li-ion Mn2O4, and Li-ion FePO4 chemistries

　　• Stand-alone pack control - no microcontroller needed

　　• Multiple voltage protection options (each programmable to 4.8V; 12-bit digital value) and selectable overcurrentprotection levels

　　• Programmable detection/recovery times for overvoltage, undervoltage, overcurrent, and short-circuit conditions

　　• Configuration/calibration registers maintained in EEPROM

　　• Open battery connect detection

　　• Integrated charge/discharge FET drive circuitry with built-in charge pump supports high-side N-channel FETs

　　• Cell balancing uses external FETs with internal state machine or external microcontroller

　　• Enters low power states after periods of inactivity

　　• Charge or discharge current detection resumes normal scan rates

　　ISL94202应用:

　　• Power tools

　　• Battery back-up systems

　　• Light electric vehicles

　　• Portable equipment

　　• Energy storage systems

　　• Solar farms

　　• Medical equipment

　　• Hospital beds

　　• Monitoring equipment

　　• Ventilators

　　评估板ISL94202EVKIT1Z

　　The ISL94202EVKIT1Z is a kit that facilitates testing of theISL94202 Li-ion battery pack monitor and control ICs. TheISL94202 monitors cell voltage, current, and temperature. It converts the cell voltages, pack current, and temperatures to12-bit digital values, provides cell balance control, andprovides complete stand-alone battery pack operation.

　　Default stand-alone operation of the ISL94202 can beoverridden by an external microcontroller. The PC basedGraphical User Interface (GUI) includes functions to monitorstand-alone operation and to demonstrate operation with anexternal microcontroller.

　　评估板ISL94202EVKIT1Z主要特性:

　　• Status LEDs monitor RGO, EOC, SD, and PSD conditions

　　• Jumper configuration single or split path applications

　　• Wakeup push button for “Exit Sleep” control

　　• FETs off push button for quick all FETs off condition

　　• Cell balance LEDs for MCB process observation

　　• PCB layout accommodates “solder braid” addition for highcurrent evaluation

　　• Software enables real time observation and data collectionof 14 analog measurements and 27 digital status indicatorsSpecifications

　　This board has been configured and optimized for the followingoperating conditions:

　　• Configurable to 3 to 8 cells, default 3 cells

　　• Standard cell voltage range 2.699V to 4.250V

　　• OV/UV delay times 1 and 4 seconds respectively

　　• CB maximum delta voltage 0.501

　　• CB maximum/minimum voltage 4.032V and 3.100V

　　图.评估板ISL94202EVKIT1Z外形图

　　评估板ISL94202EVKIT1Z材料清单: