Hi all, first release of the battery monitoring system: https://github.com/dexterbg/Open-Vehicle-Monitoring-System/commits/v2 - PEM and motor temperatures - Battery cell temperatures: 7 cell modules of 2 cells each (overall battery temperature = average of modules) - Battery pack and cell voltages - Battery monitoring system: - history of min/max/max deviation during usage cycle - ...tagging of suspicious cells (dev > std dev) - ...tagging of cell alerts (dev > 2 * std dev) (thresholds may need refinement) - ...sends SMS+MSG on alert state change - First draft of battery state data MSG protocol extension (to be discussed on the developer list) - Development/debug utility: CAN simulator w/ battery data sim data can be injected any time by issuing the DEBUG command with desired sim data chunk number (i.e. SMS "DEBUG 12" / MSG "200,12") - Minor code cleanups & bug fixes If other Twizy OVMS users are here, I really could use some feedback on this. Especially on the watch/alert thresholds. I have to gather more real data to see if we need a configuration for the alert sensitivity, or if we need to introduce some minimum deviation level. I also sometimes got single deviations that must be completely wrong, although I implemented two levels of value consistency assertion. I'm still searching for the source of those. As the Apps do not support this feature yet, please send me your SMS outputs, i.e. - "BATT" (same as last alert if you get some) - "BATT V" - "BATT VD" - "BATT T" - "BATT TD" Thanks! Michael -- Michael Balzer * Paradestr. 8 * D-42107 Wuppertal Fon 0202 / 272 2201 * Handy 0176 / 206 989 26
Am 01.12.2012 20:27, schrieb Michael Balzer:
- "BATT" (same as last alert if you get some) - "BATT V" - "BATT VD" - "BATT T" - "BATT TD"
Here are my current measurements as a reference: "BATT": Volts: !C1:+15mV Temps: ?M1:+1.1C ...read: alert on cell 1 with a max recorded deviation of 15 mV above avg, and cell module 1 is marked "suspicious" having been 1.1 °C above avg. "BATT V": P:57.80V !1:4.140V 2:4.125V 3:4.130V 4:4.125V 5:4.130V 6:4.125V 7:4.130V 8:4.125V 9:4.130V 10:4.130V 11:4.130V 12:4.125V 13:4.125V 14:4.135V ...these are the current voltage levels and alert ("!") / watch ("?") tags for cells 1..14 (yes, the twizy only has 14 cells). "BATT VD": P:57.80V !1:+15mV 2:+5mV 3:+5mV 4:+5mV 5:+5mV 6:+5mV 7:+5mV 8:+5mV 9:+5mV 10:-5mV 11:+5mV 12:-5mV 13:-5mV 14:+15mV ...max deviations for all cells, again including alert/watch tags. "BATT T": P:11.1C (10.0C..11.6C) ?1:11.6C 2:11.1C 3:11.1C 4:11.1C 5:11.1C 6:11.1C 7:11.1C ...current temperatures for modules 1..7 (2 cells per module) with alert/watch tags. "BATT TD": P:11.1C (10.0C..11.6C) ?1:+1.1C 2:+0.5C 3:+0.5C 4:+0.5C 5:+0.5C 6:+0.5C 7:+0.5C ...recorded temperature deviations. Regards, Michael -- Michael Balzer * Paradestr. 8 * D-42107 Wuppertal Fon 0202 / 272 2201 * Handy 0176 / 206 989 26
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Michael Balzer