Hello Gary,
You are basically correct about the circuitry in a battery pack. The battery cells are nothing more than the cell. They are basically the anode, cathode, electrolyte, separators and outer case. Battery packs can have multiple cells, and often include a PCM – Protection Circuit Module. The PCM can contain electronics that limit charging current, discharge current and charging voltage. The PCM may also limit charging based on temperature and it can cut off discharging before the voltage drops too low (overdischarge). The functionality will vary from one PCM to another. You won’t find much detail at UL’s Scopes of Standards site. http://ulstandardsinfonet.ul.com/scopes/ However, if you are an existing UL customer, you should be able to get far more detail through the Standards Certification Customer Library. https://www.ulstandards.com/ Regards, Ted Eckert Compliance Engineer Microsoft Corporation [email protected] <mailto:[email protected]> The opinions expressed are my own and do not necessarily reflect those of my employer. From: McInturff, Gary [mailto:[email protected]] Sent: Wednesday, May 26, 2010 1:07 PM To: [email protected] Subject: Lithium Ion Batteries Is there a Harmonized standard for Lithium batteries in the EU. For UL and the US Battery Cells would fall under UL 1642-Lithium Batteries. If there will also be a Battery Pack involved that it would also be UL 2054. Of Course now I’m confused what is the difference between a Lithium Battery and a battery Pack. I’m missing the obvious I suppose but I understand there might be requirements on the cell – but isn’t a pack nothing more than a series of cells? Do battery packs incorporate safety circuits – I would presume that whether one or more battery I would have to design a circuit that safely charges, discharges, protects against over voltage, and maybe a temperature monitoring circuit etc – but again I would presume if I do that for one cell I can scale for cells that have been shrink wrapped into a pack. I;m trying to get the scope for both of these documents but stumbling Gary McInturff Reliability/Compliance Engineer Advanced Input Systems Esterline Corporation 600 West Wilbur Avenue Coeur d' Alene, Idaho 83815 Tel: 208 635 8306 Fax 208 635 8706 - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc <http://www.ieeecommunities.org/emc-pstc> Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]>
