slua450一些疑惑点

您可以参考下面文档，问题的答案基本都有。

www.ti.com.cn/.../slua450.pdf

你好Star，我这些问题就是在你提供的那个文件上看到的。

你能帮忙解释一下我的问题么？

OCV: Open circuit voltage of a battery

• Passed Charge: Coulomb counter integrated charge during battery discharge or battery charge

• Qmax: Maximum battery chemical capacity

 DOD: Depth of discharge; DOD= 1-SOC (usually in %)

• DOD0: Last DOD reading before charge or discharge

RM: Remaining capacity, in mAh or mWh

• FCC: Full charge capacity, the amount of charge passed from the fully charged state to the

terminate voltage, in mAh or mWh

• SOC: State-of-charge at any moment, defined as SOC=Q/Qmax (usually in %), where Q is the Passed Charge from full charge state

阻抗更新根据您的电池串数在learning过程中应该是同时更新的

Update of RM and FCC takes place after each resistance grid-point update, at the end of discharge, and
at the exit of relaxation mode.这个过程中一直在计算，只有在上面这几个点会更新FCC和RM

RSOC=RM/FCC

The gas gauge updates information on chemical depth of discharge (DOD0) based on open-circuit voltage

(OCV) readings when in a relaxed state. DOD is found by correlating DOD with OCV using a predefined

table DOD(OCV,T) stored as reserved data flash parameters.

如果电池一直处于relax模式，没有达到terminated voltage,这种情况应该不会发生

PassedCharge is the coulomb count integrated during the present discharge or charge and set to zero at every DOD0 update.

请参考 SLUS450 2.5 Update of Temperature Model

BQ34Z100支持几路阻抗学习,您的设计几串电池, RA table 是同时更新的

SOH, since it's calculated based on learned Qmax which requires fully charge and discharge, so, SOH may not calculated and updated incompletely charge and discharge. Most accurate SOH for currently inserted pack following a Qmax update.

SOH is calculated as (Full Charge Capacity) / Design Capacity. So as the Full Charge Capacity is updated as the battery ages, the SOH will decrease.

你好，
1. RSOC=RM/FCC 和SOC=Q/Qmax之间的关系我还没理解。
2. 第三个问题我还没理解，
3. passed charge清零后，这部分值会放到哪里？
4. FCC 和Qmax是一个概念么？
5. 目前我们用BQ34Z100做17串电池设计。

你好，Star:
能帮忙看下如下问题么？
1. RSOC=RM/FCC 和SOC=Q/Qmax之间的关系我还没理解。
2. 第三个问题我还没理解，
3. passed charge清零后，这部分值会放到哪里？
4. FCC 和Qmax是一个概念么？
5. 目前我们用BQ34Z100做17串电池设计。