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Discussion Starter #21

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I got a prototype unit working for the 453 and tested it on a colleague's 453 ED in late December 2018; then I got busy with Christmas holidays and work.

Here's a report from that 453 prototype unit.

I'll need a few more weeks to dig out from "not car hobby" stuff and hope to get the 453 version wrapped up and ready by mid-February.
It uses the exact same hardware as the 451 test unit, so now it's just a matter of getting the code dialed in. The 453 unit will work very similarly to the 451 unit.

Some more information on the 451 unit is here (also linked in some of the threads linked to above, but for convenience putting it here as well):
http://www.sokoloff.com/smart451ED-BMS/posts/battery-health-checking-tool-for-smart-electric-drive-model-451/

All of the code for the unit is open-sourced, so if you're an electronics hobbyist and feel inclined, you can build one yourself, but most people aren't, so we also offer them for sale pre-assembled.
 

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Discussion Starter #23
A. Date of test: 5/12/2019
B. Battery production date: 3/6/2014
C. Initial in service date: 5/30/2017
D. Typical usage: 30 to 55 mph 10 to 20 mile trips
E. Location of car: Coastal NC
F. At what % do you typically recharge: 50% or less, rarely goes below 20%
G. Current miles/kilometers (specify which): 11,514 miles/18,530 km
H. Battery test results in Ah:
CAP mean: 50.4 Ah
CAP min: 49.9 Ah
CAP max: 50.9 Ah

Len
2014 EV Coupe
2014 EV Cabriolet (above)
 

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Discussion Starter #24
A. Date of test: 5/19/2019
B. Battery production date: 3/6/2014
C. Initial in service date: 5/30/2017
D. Typical usage: 30 to 55 mph 10 to 20 mile trips
E. Location of car: Coastal NC
F. At what % do you typically recharge: 50% or less, rarely goes below 20%
G. Current miles/kilometers (specify which): 11,635 miles/18,725 km
H. Battery test results in Ah:
CAP mean: 50.6 Ah
CAP min: 50.1 Ah
CAP max: 51.2 Ah

Len
2014 EV Coupe
2014 EV Cabriolet (above)
 

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My battery is at 100% still after replaced a full 2 years ago!
Will post bms details soon

Who has most miles on their EV, I am up to 53K miles now
 

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A. Date of test: 2019/11/3
B. Battery production date: 2019/6/11
C. Initial in service date: ?
D. Typical usage: ~80km daily
E. Location of car: Amsterdam Netherlands (mild climate)
F. At what % do you typically recharge: 10-40%
G. Current miles/kilometers (specify which): car:54285 km, HV battery +/-500-1000km
H. Battery test results in Ah:
CAP mean: 51.2 Ah
CAP min: 51.9 Ah
CAP max:52.4 Ah

This HV battery is now 5 months old. I bought this car recently with this new HV battery in it.
Because this is a fairly unique situation I'll post the complete dataset for your information.


3-11-2019
-----------------------------------------
--- ED Battery Management Diagnostics ---
--- v1.0.7 (451) ---
-----------------------------------------

Battery VIN: WME4513901K745063
Time [hh:mm]: 10:26, ODO : 54284 km
-----------------------------------------
Battery Status : DEGRADED: 01010000

Battery Production [Y/M/D]: 2019/6/11
Battery-FAT date [Y/M/D]: 2019/6/12
Rev.[Y/WK/PL] HW:2014/34/0, SW:2014/18/0
-----------------------------------------
SOC : 100.0 %, realSOC: 97.5 %
HV : 389.0 V, -0.44 A, -0.17 kW
LV : 14.5 V
-----------------------------------------
CV mean : 4155 mV, dV = 19 mV
CV min : 4140 mV
CV max : 4159 mV
OCVtimer: 5575 s
-----------------------------------------
Last measurement : 8 day(s)
Measurement estimation: 0.839
Actual estimation : 0.661
CAP mean: 18428 As/10, 51.2 Ah
CAP min : 18677 As/10, 51.9 Ah
CAP max : 18849 As/10, 52.4 Ah
-----------------------------------------
HV contactor state ON, low current: 308 s
Cycles left : 299749
of max. cycles: 300000
DC isolation : 65534 kOhm, OK
-----------------------------------------
Temperatures Battery-Unit /degC:
module 1: 12.7, 14.7, 13.2
module 2: 13.1, 15.1, 13.7
module 3: 12.8, 14.6, 13.0
mean : 13.7, min : 12.7, max : 15.1
coolant : 12.0
-----------------------------------------
# ;mV ;As/10
01;4158;18172
02;4158;18197
03;4158;18223
04;4140;18197
05;4159;18248
06;4158;18248
07;4160;18248
08;4159;18248
09;4158;18197
10;4158;18071
11;4157;18197
12;4154;18122
13;4156;18223
14;4157;18122
15;4156;18223
16;4157;18172
17;4157;18172
18;4155;18096
19;4156;18223
20;4155;18096
21;4156;18172
22;4155;18197
23;4157;18274
24;4155;18274
25;4157;18122
26;4155;18096
27;4157;18223
28;4157;18274
29;4157;18172
30;4158;18172
31;4158;18172
32;4158;18172
33;4158;18071
34;4159;18274
35;4156;18248
36;4158;18122
37;4158;18172
38;4158;18274
39;4159;18147
40;4158;18122
41;4160;18248
42;4158;18172
43;4150;18172
44;4154;18248
45;4155;18274
46;4155;18299
47;4154;18172
48;4155;18172
49;4156;18223
50;4155;18274
51;4155;18248
52;4156;18248
53;4155;18147
54;4155;18325
55;4156;18147
56;4156;18147
57;4157;18172
58;4155;18325
59;4155;18197
60;4157;18172
61;4158;18172
62;4156;18147
63;4157;18096
64;4157;18197
65;4157;18122
66;4157;18122
67;4155;18122
68;4155;18147
69;4155;18197
70;4154;18122
71;4154;18147
72;4155;18172
73;4154;18172
74;4152;18147
75;4153;18147
76;4155;18197
77;4153;18172
78;4144;18172
79;4156;18197
80;4155;18172
81;4156;18197
82;4155;18172
83;4156;18197
84;4155;18223
85;4154;18223
86;4155;18172
87;4156;18172
88;4155;18147
89;4156;18223
90;4157;18147
91;4156;18223
92;4157;18147
93;4157;18147
-----------------------------------------
Individual Cell Statistics:
-----------------------------------------
CV mean : 4156 mV, dV= 20 mV, s= 2.68 mV
CV min : 4140 mV, # 4
CV max : 4160 mV, # 7
-----------------------------------------
CAP mean: 18187 As/10, 50.5 Ah
CAP min : 18071 As/10, 50.2 Ah, # 10
CAP max : 18325 As/10, 50.9 Ah, # 54
-----------------------------------------
Voltage Distribution (dV= 20 mV):
----------------------->-----[=|=]-----
4140 02 > [4155; 4156; 4157] < 00 4160
min [p25; median; p75] max
-----------------------------------------
Reading data....OK
-----------------------------------------
Status OBL Charger-Unit:
User selected : 16 A
Cable maximum : 0 A
AC L1: 0.0 V, 0.0 A
DC HV: 0.0 V, 0.0 A
DC LV: 14.6 V
-----------------------------------------
Temperatures Charger-Unit /degC:
Reported : NA
Cooling plate : NA
Inlet socket : NA
-----------------------------------------
Reading data.OK
-----------------------------------------
Status Cooling- and Subsystems:
Temperature : 10.1 degC
Cooling fan : 0.0 %
Cooling pump : 67.8 %, 13 degC
: 14.0 V, 1.8 A
OTR:
Cooling fan : 13 h
Cooling pump : 6490 h
Battery heater: 0 h, OFF
Vaccum pump : 81.727 h
Pressure 1, 2 : -716 mbar, -716 mbar
-----------------------------------------

* All measurements captured *


-----------------------------------------
Battery VIN: WME4513901K745063
Time [hh:mm]: 10:26, ODO : 54284 km
-----------------------------------------
SOC : 100.0 %, realSOC: 97.5 %
HV : 389.0 V, -0.44 A, -0.17 kW
LV : 14.5 V
-----------------------------------------
 
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