聊聊电池管理系统BMS的产品要求

发表于 2016/3/4 16:30:59 阅读（3448）

我是按照《Functional and Safety Guide for Battery Management System (BMS) assessment and certification》说的再做些补充哈。

1）首先产品开发要有

2）然后要对电池系统和电池管理安全做一个完整的PHA

这里将电池系统的系统危害分了一下

然后将BMS的内容分级

a）控制冷却系统失效

b）控制加热系统失效

c）电压控制功能失效

d）单体过放，由于地线问题或控制功能失效
e）过流，由于控制功能失效或者校准错误

f）控制和诊断电路短路

g）与VCU通信功能失效

h）电池管理功能失效

可能还有绝缘检测功能失效等

3)功能分解

在这里分了安全功能、性能功能和附加功能

3.1 安全功能（监控状态、评估需求和关断开启），在这里进一步细分

SF1 监控状态=>测单体电压、包电压；测单体温度和包温度，测电流，确定绝缘电阻

SF2 评估需求 =>分析电池包核心状态（计算关键上下数值，电压、温度还有功率等），管理运行模式，接受信息

SF3 开关控制充和放

这里每一个需要进一步分解对应的过程，和PHA对应

3.2性能功能

管理寿命和能量，主要是SOC、SOH、均衡性和其他控制功能

3.3 附加功能

自身诊断和电池记录诊断，类似于电池使用记录仪

Additional Functions (AF) AF1: Diagnostic - Record Battery life history log

这里细分了很多的模式

初始化模式（自检） The basic software and applications shall initialize. The device shall check the integrity of its software and run autotests if necessary. It shall then take into account its different configuration files and the content of the non-volatile memory.
配置模式 mode during which the BMS device is able to receive, check and take into account additional configuration data sent by its main EMS/VMS device (master/slave relation).
运行模式（需细分成充电、放电和空闲模式） BMS mode management function shall be the mode during which the device is fully operational. It means that no error is detected and that the device is able to execute its Control and Monitoring tasks.
降级模式Limp home The BMS mode management function shall manage a mode when the BMS device detects either an internal or external failure. If a critical error occurs during Normal Operation mode, the mode management function shall go t o Degraded mode.
关闭模式 The mode management function shall manage a shutdown during which BMS services shall be stopped.
维护和测试模式 If it is identified as necessary, the maintenance/test mode offered by the BMS mode management function shall be the mode during which intrusive maintenance operations are authorized and can be executed (to force process variables for example).