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MAXIM Integrated - MAX17823, 十二通道高壓電池感測器
The solution is 12cell BMS solution for E-car, it is designed by Avnet BD team,
The battery sensor is MAX17823, MCU is FSL S9KEAZ128 and MC9S12ZVCA64.
The MAX17823 is Maxim's fourth-generation, high-voltage battery-management solution. With higher accuracy, safety-enabling features, and an automotive-hardened SMBus ladder,the MAX17823 has been put through rigorous testing to ensure operation under the most hostile of EMC/EMI environments. The robust SMBus ladder daisy chain supports cable lengths of up to 2m and passes tough industry compliance testing. Cell-reversal capability and 96-cell hot-plug performance make pack assembly easy for high-cell-count systems.A host of ASIL D-enabling features makes safety assessment of pack operation simple and straightforward for any host microcontroller.
Features
• Uni-directional differential bus segments
• MAX17841 SPI to UART translation IC with FIFO buffer
• BMS to HV isolation with low cost 2.7kV transformers
• Supports manual safety disconnect switch w/o digital isolators
• Shutdown/wakeup by communication or by direct drive of SHDNL pin
• Balanced supply current per module
• Supports 100Hz measurement rate with full ASIL diagnostics
• Hotplug tolerant –validated upto 96-cells
Application
• Electric and hybrid electric vehicle (HEV) battery packs
• Electric bikes
• High-Power battery-backup systems
• High-Voltage, multicell series-stacked-battery systems
• Power tools
• SuperCap backup systems
Product Benefits
• Temperature using temp sensors
• Barometer pressure using pressure sensor
• HR using ECG analog front end
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