Subject: [eman] Comments on draft-quittek-eman-battery-mib-00

From: "Mielke, William F (Bill)" <[email-masked]>
Date: Tue, 29 Mar 2011 12:06:42 -0500

See below.

William F. Mielke
Alcatel-Lucent
Distinguished Member of Technical Staff
6200 East Broad Street
Room: 4B01-1V
Columbus, OH  43213-1530
Email: [email-masked]
Phone: 614 367 5628
Fax: 614 367 5965

"Live like you're going to die tomorrow.
 Learn like you're going to live forever."

    - Albert Einstein

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Comments on draft-quittek-eman-battery-mib-00
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I queried one of my colleagues, Christophe Grangeat, to review this document and provide some comments.  Christophe has a lot of domain expertise with various battery technologies and the monitoring requirements for them.  I can get back with him if we need further clarification.

Here is his response to my query:

It is natural that the battery MIB topic is starting with Li-ion batteries, since they require an embedded control board to operate safely. However, it is now required that Hybrid systems with deep cycle lead-acid batteries also need some careful monitoring in order to operate in the most efficient and sustainable way. These lead-acid batteries would not have their own embedded control board but the battery monitoring MIBs would be embedded in the controller of the energy management system. NiCd batteries would be managed in the same way as lead-acid. We also observe new battery technologies, like Sodium or Redox Flow batteries that also require some control electronics and which we advocate should be using standardized MIBs. 

On the document itself, here are a few comments that we would propose at this stage:

Chapter3 4th §
In the static properties we recommend to add the manufacturer's recommended charging data, such as boost voltage, float voltage, current limitation, maximum duration at boost voltage,

Chapter 7.1
We consider temperature an important criterion for battery safety and life time. We would recommend including battery temperature in the MIB, as well as criteria that allow raising thermal run-away alarms.

On the same safety topic, we would recommend to add a "batteryHealth" criterion, which can include for example SymetryAlarms for lead-acid technology. 

Chapter 7.2
The SoC estimate issues may be sensitive to address for some technologies like lead-acid or NiCd. The group should seek advice from manufacturers.