CANopen and Lithium Iron Magnesium Phosphate batteries
"John Dammeyer" <[email protected]> Fri, 6 Sep 2019 16:39:02 -0700
| Newsgroups | gmane.comp.hardware.bus.can |
|---|---|
| Message-ID | <[email protected]> |
This is a multipart message in MIME format. ------=_NextPart_000_0B8E_01D564D1.97F25040 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hi everyone, The CANopen battery specification appears to be targeted to = Charger=C3=B3BMS interface without really any other system master. The = spec doesn't appear to really provide more detailed information about = managing Lithium Iron Magnesium Phosphate chemistry batteries. As in = Cell Voltage, Cell Temperature etc. =20 We're using the Valence BMS which has CAN messages using a proprietary = High Level Protocol. The problem is it floods the bus with messages at = a rate which is well beyond what is needed. And it requires a separate = CAN bus to deal with those. I currently receive those and pick and = choose what to send over a second CANopen bus.=20 =20 What I'm looking for is alternative BMS or BMS+Battery systems that are = CANopen compatible. Compliant would be nice but if there's no = specification it's difficult to be compliant. =20 With so many Lithium powered vehicles etc, what's out there now? =20 =20 Specs for the battery system is: Lithium Iron Magnesium Phosphate chemistry 24VDC Approximately 72AH or parallel configurations to create say 144AH or = 216AH. =20 And of course the CANopen structure that supports something like that. = Does it exist or still in the I'd like to have one like that state? =20 Thanks in advance for your feedback. John Dammeyer =20 "ELS! Nothing else works as well for your Lathe" Automation Artisans Inc. www dot autoartisans dot com=20 =20 ------=_NextPart_000_0B8E_01D564D1.97F25040 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" = xmlns:o=3D"urn:schemas-microsoft-com:office:office" = xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" = xmlns=3D"http://www.w3.org/TR/REC-html40"><head><meta = http-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta = name=3DProgId content=3DWord.Document><meta name=3DGenerator = content=3D"Microsoft Word 14"><meta name=3DOriginator = content=3D"Microsoft Word 14"><link rel=3DFile-List = href=3D"cid:[email protected]"><!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]--><!--[if gte mso 9]><xml> <w:WordDocument> <w:TrackMoves/> <w:TrackFormatting/> <w:EnvelopeVis/> 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style=3D'tab-interval:36.0pt'><div = class=3DWordSection1><p class=3DMsoNormal><span = style=3D'font-size:11.0pt'>Hi everyone,<o:p></o:p></span></p><p = class=3DMsoNormal><span style=3D'font-size:11.0pt'>The CANopen battery = specification appears to be targeted to Charger</span><span = style=3D'font-size:11.0pt;font-family:Wingdings;mso-ascii-font-family:"Ti= mes New Roman";mso-hansi-font-family:"Times New = Roman";mso-char-type:symbol;mso-symbol-font-family:Wingdings'><span = style=3D'mso-char-type:symbol;mso-symbol-font-family:Wingdings'>=C3=B3</s= pan></span><span style=3D'font-size:11.0pt'>BMS interface without really = any other system master.<span style=3D'mso-spacerun:yes'>=C2=A0 = </span>The spec doesn't appear to really provide more detailed = information about managing </span>Lithium Iron Magnesium Phosphate = chemistry <span style=3D'font-size:11.0pt'>batteries.<span = style=3D'mso-spacerun:yes'>=C2=A0 </span>As in Cell Voltage, Cell = Temperature etc.<o:p></o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt'><o:p> </o:p></span></p><p = class=3DMsoNormal><span style=3D'font-size:11.0pt'>We're using the = Valence BMS which has CAN messages using a proprietary High Level = Protocol.<span style=3D'mso-spacerun:yes'>=C2=A0 </span>The problem is = it floods the bus with messages at a rate which is well beyond what is = needed.<span style=3D'mso-spacerun:yes'>=C2=A0 </span>And it requires a = separate CAN bus to deal with those. <span = style=3D'mso-spacerun:yes'>=C2=A0=C2=A0</span>I currently receive those = and pick and choose what to send over a second CANopen bus. = <o:p></o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt'><o:p> </o:p></span></p><p = class=3DMsoNormal><span style=3D'font-size:11.0pt'>What I'm looking for = is alternative BMS or BMS+Battery systems that are CANopen = compatible.<span style=3D'mso-spacerun:yes'>=C2=A0 </span>Compliant = would be nice but if there's no specification it's difficult to be = compliant.<o:p></o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt'><o:p> </o:p></span></p><p = class=3DMsoNormal><span style=3D'font-size:11.0pt'>With so many Lithium = powered vehicles etc, what's out there now?<span = style=3D'mso-spacerun:yes'>=C2=A0 </span><o:p></o:p></span></p><p = class=3DMsoNormal><span = style=3D'font-size:11.0pt'><o:p> </o:p></span></p><p = class=3DMsoNormal><span style=3D'font-size:11.0pt'>Specs for the battery = system is:<o:p></o:p></span></p><p class=3DMsoNormal>Lithium Iron = Magnesium Phosphate chemistry<span = style=3D'font-size:11.0pt'><o:p></o:p></span></p><p = class=3DMsoNormal><span = style=3D'font-size:11.0pt'>24VDC<o:p></o:p></span></p><p = class=3DMsoNormal><span style=3D'font-size:11.0pt'>Approximately 72AH or = parallel configurations to create say 144AH or = 216AH.<o:p></o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt'><o:p> </o:p></span></p><p = class=3DMsoNormal><span style=3D'font-size:11.0pt'>And of course the = CANopen structure that supports something like that.<span = style=3D'mso-spacerun:yes'>=C2=A0 </span>Does it exist or still in the = I'd like to have one like that state?<o:p></o:p></span></p><p = class=3DMsoNormal><span = style=3D'font-size:11.0pt'><o:p> </o:p></span></p><p = class=3DMsoNormal><span style=3D'font-size:11.0pt'>Thanks in advance for = your feedback.<o:p></o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt'>John Dammeyer<o:p></o:p></span></p><p = class=3DMsoNormal><span = style=3D'font-size:11.0pt'><o:p> </o:p></span></p><p = class=3DMsoNormal><span = style=3D'font-size:11.0pt;mso-bidi-font-size:10.5pt;font-family:"Calibri"= ,"sans-serif";mso-fareast-font-family:Calibri;mso-bidi-font-family:"Times= New Roman";mso-fareast-language:EN-CA;mso-no-proof:yes'>"ELS! = Nothing else works as well for your Lathe"<o:p></o:p></span></p><p = class=3DMsoNormal><span = style=3D'font-size:11.0pt;mso-bidi-font-size:10.5pt;font-family:"Calibri"= ,"sans-serif";mso-fareast-font-family:Calibri;mso-bidi-font-family:"Times= New Roman";mso-fareast-language:EN-CA;mso-no-proof:yes'>Automation = Artisans Inc.<o:p></o:p></span></p><p class=3DMsoNormal><span = style=3D'font-size:11.0pt;mso-bidi-font-size:10.5pt;font-family:"Calibri"= ,"sans-serif";mso-fareast-font-family:Calibri;mso-bidi-font-family:"Times= New Roman";mso-fareast-language:EN-CA;mso-no-proof:yes'>www dot = autoartisans dot com <o:p></o:p></span></p><p = class=3DMsoNormal><o:p> </o:p></p></div></body></html> ------=_NextPart_000_0B8E_01D564D1.97F25040-- -- Archives and useful links: http://groups.yahoo.com/group/CANbus Subscribe and unsubscribe at www.vector.com/canlist/ Report any problems to <[email protected]>