Maxim MAX17823B 12路高压数据采集系统解决方案

Maxim公司的MAX17823B 12路高压数据采集系统,具有12位SAR ADC,能在161 μs内测量12颗电池电压和两个温度值.器件内部有12个开关用来电池平衡和广泛的内置诊断.多达32个器件可菊花链接在一起,管理384个电池和监测64个温度.器件满足AECQ-100 Grade 2温度范围-40℃ 到 105℃,工作电压从9V到65V,超低功耗:待机模式为2mA,关断模式为2μA.电池电压(0V到5V)能在65V共模范围分别测量.如果采用过取样,每路可多达128个测量,分辨率为14位.内置诊断以支持ASIL D和FMEA要求,电池管理UART协议.主要用在高压电池组,电动汽车(EV),混合电动汽车(HEV),电动自行车,电池备份系统(UPS),超级电容系统,电池供电的工具.中电网为您整理如下详细资料,本文介绍了MAX17823B主要优势和特性,功能框图和二极管图,模拟前端框图,电动汽车系统框图和工作电路图,以及评估板MAX17823B EVK主要优势和特性,电路图,材料清单和PCB设计图
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The MAX17823B is a data acquisition system for the management of high-voltage battery modules. The system features a 12-bit SAR ADC that can measure 12 cell voltages and two temperatures in 161 μs. There are 12 internal switches for cell-balancing and extensive built-in diagnostics. Up to 32 devices can be daisy-chained together to manage 384 cells and monitor 64 temperatures.
Cell voltages (0V to 5V) are measured differentially over a 65V common-mode range. Cell measurements have a typical accuracy of 2mV (3.6V cell, 25℃). If oversampling is enabled, up to 128 measurements per channel can be averaged internally with 14-bit resolution. The system can shut itself down in the event of a thermal overload by measuring its own die temperature.
The system uses Maxim’s battery-management UART protocol for robust communications and when used in conjunction with the MAX17880 12-channel battery monitor, it is ideal for automotive battery-management systems that require a high safety integrity level.
MAX17823B主要优势和特性:
• AECQ-100 Grade 2 Temperature Range
- -40℃ to 105℃
• Operating Voltage from 9V to 65V
• Ultra-Low Power Operation
- Standby Mode: 2mA
- Shutdown Mode:...