D0bbie
Novice Member
I can post the instructions but the are files on the Facebook group that need to be downloaded as well.Can you give that instructions to us witch doesn't have Facebook?
I can post the instructions but the are files on the Facebook group that need to be downloaded as well.Can you give that instructions to us witch doesn't have Facebook?
Hmm, it's measuring the difference in the voltage between maximum and minimum for each unit pack. that looks reasonable.Looks like the torque pro readings just give the cell error figures. Not sure if this is any good for diagnosing the issue?
Cheers. Any idea how I would go about measuring the unit packs temps?Hmm, it's measuring the difference in the voltage between maximum and minimum for each unit pack. that looks reasonable.
I would monitor unit pack temps during charging to see if one pack is acting irregular, other than that I think maybe dealer advice..
Unless there is significant impact on range, I doubt they will do much. 2.5% would probably be about 3.5 miles on a 150mile range. They might just say keep an eye on it and when more significantly worse to let them know. But it's probably still best to get their input.
Copy the following into a file ending in .csv, then import it into torque pro.Cheers. Any idea how I would go about measuring the unit packs temps?
Name,ShortName,ModeAndPID,Equation,Min Value,Max Value,Units,Header,startDiagnostic,stopDiagnostic,Scale
.00_BMS SystemMainRelayB,SMRB,0x22b049,a,0,1,,781,,,1
.00_BMS SystemMainRelayG,SMRG,0x22b04a,a,0,1,,781,,,1
.00_BMS SystemMainRelayP,SMRP,0x22b052,a,0,1,,781,,,1
.00_BMS Unit01 Circuit Temp,CMU01 Circuit,0x22b001,(g/2)-40,0,60,C,781,,,1
.00_BMS Unit01 MaxVolt,CMU01 Max,0x22b001,((c*256+d)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit01 MinVolt,CMU01 Min,0x22b001,((a*256+b)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit01 Temp1,CMU01 Temp1,0x22b001,(f/2)-40,0,60,C,781,,,1
.00_BMS Unit01 Temp2,CMU01 Temp2,0x22b001,(e/2)-40,0,60,C,781,,,1
.00_BMS Unit02 Circuit Temp,CMU02 Circuit,0x22b009,(g/2)-40,0,60,C,781,,,1
.00_BMS Unit02 MaxVolt,CMU02 Max,0x22b009,((c*256+d)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit02 MinVolt,CMU02 Min,0x22b009,((a*256+b)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit02 Temp1,CMU02 Temp1,0x22b009,(f/2)-40,0,60,C,781,,,1
.00_BMS Unit02 Temp2,CMU02 Temp2,0x22b009,(e/2)-40,0,60,C,781,,,1
.00_BMS Unit03 Circuit Temp,CMU03 Circuit,0x22b011,(g/2)-40,0,60,C,781,,,1
.00_BMS Unit03 MaxVolt,CMU03 Max,0x22b011,((c*256+d)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit03 MinVolt,CMU03 Min,0x22b011,((a*256+b)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit03 Temp1,CMU03 Temp1,0x22b011,(f/2)-40,0,60,C,781,,,1
.00_BMS Unit03 Temp2,CMU03 Temp2,0x22b011,(e/2)-40,0,60,C,781,,,1
.00_BMS Unit04 Circuit Temp,CMU04 Circuit,0x22b019,(g/2)-40,0,60,C,781,,,1
.00_BMS Unit04 MaxVolt,CMU04 Max,0x22b019,((c*256+d)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit04 MinVolt,CMU04 Min,0x22b019,((a*256+b)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit04 Temp1,CMU04 Temp1,0x22b019,(f/2)-40,0,60,C,781,,,1
.00_BMS Unit04 Temp2,CMU04 Temp2,0x22b019,(e/2)-40,0,60,C,781,,,1
.00_BMS Unit05 Circuit Temp,CMU05 Circuit,0x22b021,(g/2)-40,0,60,C,781,,,1
.00_BMS Unit05 MaxVolt,CMU05 Max,0x22b021,((c*256+d)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit05 MinVolt,CMU05 Min,0x22b021,((a*256+b)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit05 Temp1,CMU05 Temp1,0x22b021,(f/2)-40,0,60,C,781,,,1
.00_BMS Unit05 Temp2,CMU05 Temp2,0x22b021,(e/2)-40,0,60,C,781,,,1
.00_BMS Unit06 Circuit Temp,CMU06 Circuit,0x22b029,(g/2)-40,0,60,C,781,,,1
.00_BMS Unit06 MaxVolt,CMU06 Max,0x22b029,((c*256+d)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit06 MinVolt,CMU06 Min,0x22b029,((a*256+b)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit06 Temp1,CMU06 Temp1,0x22b029,(f/2)-40,0,60,C,781,,,1
.00_BMS Unit06 Temp2,CMU06 Temp2,0x22b029,(e/2)-40,0,60,C,781,,,1
.00_BMS Unit07 Circuit Temp,CMU07 Circuit,0x22b0a3,(g/2)-40,0,60,C,781,,,1
.00_BMS Unit07 MaxVolt,CMU07 Max,0x22b0a3,((c*256+d)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit07 MinVolt,CMU07 Min,0x22b0a3,((a*256+b)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit07 Temp1,CMU07 Temp1,0x22b0a3,(f/2)-40,0,60,C,781,,,1
.00_BMS Unit07 Temp2,CMU07 Temp2,0x22b0a3,(e/2)-40,0,60,C,781,,,1
.00_BMS Unit08 Circuit Temp,CMU08 Circuit,0x22b0ab,(g/2)-40,0,60,C,781,,,1
.00_BMS Unit08 MaxVolt,CMU08 Max,0x22b0ab,((c*256+d)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit08 MinVolt,CMU08 Min,0x22b0ab,((a*256+b)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit08 Temp1,CMU08 Temp1,0x22b0ab,(f/2)-40,0,60,C,781,,,1
.00_BMS Unit08 Temp2,CMU08 Temp2,0x22b0ab,(e/2)-40,0,60,C,781,,,1
.00_BMS Unit09 Circuit Temp,CMU09 Circuit,0x22b0b3,(g/2)-40,0,60,C,781,,,1
.00_BMS Unit09 MaxVolt,CMU09 Max,0x22b0b3,((c*256+d)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit09 MinVolt,CMU09 Min,0x22b0b3,((a*256+b)/2000)+1,2.5,4.400000095,V,781,,,1
.00_BMS Unit09 Temp1,CMU09 Temp1,0x22b0b3,(f/2)-40,0,60,C,781,,,1
.00_BMS Unit09 Temp2,CMU09 Temp2,0x22b0b3,(e/2)-40,0,60,C,781,,,1
you can link to this Facebook groupIs it best to do a full charge and balance before checking that? I've just set up Torque Pro via links and instructions from the Facebook group which will have the voltage reading for each of the 9 packs.
you can link to this Facebook group
I think it's just battery voltage multiplied by current. (If it's charging or regenerating, then both current and discharge rate will be negative. This is the opposite charge rate and not discharging rate so multiplied by -1)
on Screenshot there is Dis Chg kw parameter, you can give these PIDs.
This morning it has dropped to 97.06% from 97.52% yesterday. It that time it wasn't charged and did just 20 miles. Total mileage 19,800.And after 3 full charges since Friday and 2 rapid charges sue to trips away, my SOH has now dropped overnight from 98.55 to 97.52.
I'm is a similar boat to you. I'm on the original Jan 2020 BMS and have a cell imbalance of around 80mV. I was at 100% SOH until around 13,000 miles then it has dropped 2% (so now at 97.98%) over the next 2,000 miles. At this rate, I will be at the guaranteed 70% SOH around 45,000 miles.This morning it has dropped to 97.06% from 97.52% yesterday. It that time it wasn't charged and did just 20 miles. Total mileage 19,800.
Interesting that you are still on the original BMS and having the same problem. I'm on the new one (having had the duff one in Nov). My voltage is still showing the ideal 449 though on this BMS update and 93% soc when fully charged up.I'm is a similar boat to you. I'm on the original Jan 2020 BMS and have a cell imbalance of around 80mV. I was at 100% SOH until around 13,000 miles then it has dropped 2% (so now at 97.98%) over the next 2,000 miles. At this rate, I will be at the guaranteed 70% SOH around 45,000 miles.
My charging profile is good in that the car spends 95% of its time between 35% and 85% SOC.
Like you, SOH will drop when the car is not being charged.
Is this low SOH real and how does the car measure it? That is the big question. When new, I was measuring a battery capacity of 42KWh, I am now measuring 39.3KWh so I think the capacity and SOH has reduced. The 100% full voltage is still 455V and 96.2% SOC.
I am having the car updated to the latest BMS next week so we will see if that improves the degradation rate.
I'm hoping that part of my problem is due to the cell imbalance, which may be solved by the latest BMS. I will know in the next few weeks.Interesting that you are still on the original BMS and having the same problem. I'm on the new one (having had the duff one in Nov). My voltage is still showing the ideal 449 though on this BMS update and 93% soc when fully charged up.
22:39:47.361 OK22:39:47.289 atsp6
22:39:54.379 OK22:39:54.337 ath1
22:40:10.559 OK22:40:10.508 atsh 760
22:40:41.539 768100D62F19453313922:40:41.447 22f194
789100D62F194 30 31 31 ////// 0 1 122f194
OKatsh 785 // DCDC
78D100D62F194 46 30 31 ////// F 0 122f194
OKatsh 7e3 // VCU
7EB100D62F194 46 30 31 ////// F 0 122f194
OKatsh 750 // ATC (per OVMS) = HVAC
758101762F194 52 45 4C ////// R E L // Data length 0x17 = 2322f194
OKatsh 740 // BCM
748100D62F194 32 32 31 ////// 2 2 122f194
OKatsh 710 // GWM
718100D62F194 30 30 37 ////// 0 0 722f194
OKatsh 724 // TPMS (not moving)
72C 03 7F 22 78 // ??22f194
OKatsh 760 // IPK
768100D62F194 53 31 39 ////// S 1 922f194
OKatsh 784 // EVCC
NO DATA // Was not charging22f194
OKatsh 745 // PEPS
74D100D62F194 00 00 5A ////// ⓪ ⓪ Z // Note 2 leading nulls22f194
OKatsh 761 // ICE (per OVMS) = FICM
769100D62F194 53 31 36 ////// S1622f194
OKatsh 776 // PLC
77E100D62F194 31 37 37 ////// 1 7 722f194
OKatsh 771 // SCU
779101262F194 31 39 34 ////// 1 9 422f194
OKatsh 782 // TC
78A100D62F194 46 30 31 ////// F 0 122f194
OKatsh 734 // FDR
73C100D62F194 41 43 43 ////// A C C22f194
OKatsh 733 // FVCM
73B100D62F194 4D 32 2E ////// M 2 .22f194
OKatsh 732 // RDRA
73A100D62F194 30 30 30 ////// 0 0 022f194
OKatsh 730 // SRM
738100D62F194 5A 53 31 ////// Z S 122f194
OKatsh 723 // EPB
72B100D62F194 20 20 20 ////// • • • // Note 6 leading spaces22f194
OKatsh 721 // EPS
729100D62F194 5A 73 72 ////// Z s r22f194
OKatsh 720 // ABS
728100D62F194 31 30 31 ////// 1 0 122f194
OKatsh 711 // TBOX
NO DATA // Not present22f194
OKatsh 784 // EVCC
NO DATA // Still no version, in READY mode22f194
OKath1
OKatsh 784 // EVCC (per OVMS) May be confused with OBC??
78C100D62F194 56 31 30 ////// V 1 022f194
I have been researching the OVMS and came across this - can you plaese advise is this an alternative to OVMS or does it still need the OVMS box? ThanksWell most electric cars show State of Charge % but this is not included on the MG ZS EV and this is what every owner has been after since 2019. This is a free 3rd part Android only app that gathers the data from the car via OBDII adaptor so we can see battery % / State of Health and lots of other data we have previously not had access to on the car.
I have been researching the OVMS and came across this - can you plaese advise is this an alternative to OVMS or does it still need the OVMS box? ThanksWell most electric cars show State of Charge % but this is not included on the MG ZS EV and this is what every owner has been after since 2019. This is a free 3rd part Android only app that gathers the data from the car via OBDII adaptor so we can see battery % / State of Health and lots of other data we have previously not had access to on the car.
Using a terminal program is an alternative way of getting the firmware version numbers, yes. The Thai app referenced at the first post of this topic is another alternative, much cheaper and easier [ edit: cheaper than OVMS, and easier than the terminal program. ]can you please advise is this an alternative to OVMS