BMS cell monitor | Open Vehicles

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4 February, 2022 - 21:55

ptgomes

BMS cell monitor

Hello.

Just received the OVMS. Got a 453 EQ.

All working, but the BMS cell monitor doesnt show data. Normal?

Also, the two gauges on the top right on the dashboard doesnt move. Also expectable?

5 February, 2022 - 11:27

Dimitrie

Hi,

did you enable can Write under features?

5 February, 2022 - 11:34

(Reply to #2) #3

ptgomes

Yes, I did.

5 February, 2022 - 13:46

Dimitrie

Smart 453

Then i need more info,

can you please type into Shell when Ignition is on:

obd can1 req dev 79B 7BB 2141
obd can1 req dev 79B 7BB 2142

config list xsq

and post the output

5 February, 2022 - 14:32

(Reply to #4) #5

ptgomes

OVMS# obd can1 req dev 79B

OVMS# obd can1 req dev 79B 7BB 2141
79b[7bb] 2141: Response:
0f a5 0f a5 0f a4 0f a6 0f a4 0f a5 0f a4 0f a4 | ................
0f a4 0f a4 0f a5 0f a5 0f a3 0f a5 0f a4 0f a4 | ................
0f a4 0f a5 0f a5 0f a5 0f a5 0f a4 0f a5 0f a5 | ................
0f a4 0f a5 0f a5 0f a5 0f a4 0f a5 0f a5 0f a5 | ................
0f a4 0f a5 0f a5 0f a3 0f a4 0f a5 0f a4 0f a3 | ................
0f a4 0f a4 0f a3 0f a3 0f a6 0f a3 0f a3 0f a4 | ................

OVMS# obd can1 req dev 79B 7BB 2142
79b[7bb] 2142: Response:
0f a6 0f a6 0f a6 0f a6 0f a6 0f a5 0f a6 0f a6 | ................
0f a6 0f a6 0f a6 0f a6 0f a6 0f a7 0f a6 0f a6 | ................
0f a6 0f a6 0f a5 0f a7 0f a6 0f a6 0f a6 0f a6 | ................
0f a6 0f a6 0f a6 0f a5 0f a6 0f a6 0f a6 0f a6 | ................
0f a7 0f a6 0f a7 0f a7 0f a7 0f a7 0f a6 0f a7 | ................
0f a6 0f a7 0f a7 0f 92 0f a6 0f a7 0f a7 0f a7 | ................

OVMS# config list xsq
xsq (readable writeable)
  canwrite: yes
  suffrange: 0
  suffsoc: 80

I (62172779) webcommand: HttpCommandStream[0x3f8b2044]: 3517800 bytes free, executing: config list xsq

5 February, 2022 - 15:56

Dimitrie

smart 453

and please,

me li volt

other looks ok

5 February, 2022 - 23:03

(Reply to #6) #7

ptgomes

OVMS# me li volt

v.b.12v.voltage 12.3V

v.b.12v.voltage.alert

v.b.12v.voltage.ref 12.6V

v.b.c.voltage

v.b.c.voltage.alert

v.b.c.voltage.dev.max

v.b.c.voltage.max

v.b.c.voltage.min

v.b.p.voltage.avg

v.b.p.voltage.grad

v.b.p.voltage.max

v.b.p.voltage.min

v.b.p.voltage.stddev

v.b.p.voltage.stddev.max 0V

v.b.voltage 377.5V

v.c.12v.voltage

v.c.voltage

v.g.voltage

7 February, 2022 - 11:49

(Reply to #7) #8

ptgomes

Any thoughts why nothing

Any thoughts why nothing shows up on "BMS cell monitor"?

7 February, 2022 - 17:37

Dimitrie

smart 453

no, but i have made a test Firmware with some changes. Can you test it pls?
go to Firmware: Flash from Web. Http URL: ovms.dimitrie.eu/firmware/ota/v3.1/main/ovms3.bin

let me know if it works

7 February, 2022 - 17:44

(Reply to #9) #10

ptgomes

Unfortunately keeps not

Unfortunately keeps not showing anything...

7 February, 2022 - 17:56

#11

Dimitrie

smart 453

can you send me the shell log output when you you set the log level to verbose.

in shell type: log level verbose

then make ignition on

7 February, 2022 - 18:51

(Reply to #11) #12

ptgomes

OVMS# log level verbose

Logging level for * set to verbose

D (4061054) pushover: EventListener: Handling event (clock.1850)

D (4061054) pushover: EventListener: No priority set -> ignore notification

D (4082054) pushover: EventListener: Handling event (ticker.60)

D (4082054) pushover: EventListener: No priority set -> ignore notification

V (4082064) ovms-duktape: Duktape: Compacting DukTape memory

D (4082124) ovms-duktape: Duktape: Compacting DukTape memory done in 60 ms

10 February, 2022 - 20:36

#13

Dimitrie

Smart 453: BMS cell Monitor

pls test my Firmware again version: 3.3.001-281-g6dfd313f-dirty
ovms.dimitrie.eu/firmware/ota/v3.1/main/ovms3.bin

10 February, 2022 - 21:02

(Reply to #13) #14

ptgomes

Still no joy...

16 February, 2022 - 18:01

(Reply to #14) #15

ptgomes

Now I get all blank again

14 February, 2022 - 13:30

#16

ptgomes

Today I got readings, bu not

Today I got readings, bu not sure how to interpret.

oltage	Cell avg3.828V Cell min3.781V Cell max3.852V StdDev22.8mV StdDev max4.6mV Gradient-68.9mV
Temperature	Cell avg0.0°C Cell min0.0°C Cell max0.0°C StdDev0.0°C StdDev max0.0°C

oltage

Cell avg3.828V

Cell min3.781V

Cell max3.852V

StdDev22.8mV

StdDev max4.6mV

Gradient-68.9mV

Temperature

Cell avg0.0°C

Cell min0.0°C

Cell max0.0°C

StdDev0.0°C

StdDev max0.0°C

26 March, 2022 - 17:51

(Reply to #16) #17

453EQ22kW

I also have a ForTwo EQ and

I also have a ForTwo EQ and want to read individual cell voltages etc. Did you have any luck to get so far ?

30 March, 2022 - 07:46

(Reply to #17) #18

ptgomes

I get data as I said, but can

I get data as I said, but can't interpret it. It seems there's one cell that deviates.

13 July, 2023 - 08:28

#19

iluhis

You get two of 96 pairs of

You get two of 96 pairs of data. If you combine four hex numbers and convert it into binary you will get a number that is very similat to a voltage readings:

0f a6 = 0fa6 = 4006 = 4.006V 
0f 92 = 0f92 = 3986 = 3.986V