Can't see them. The are encapsulated with black goo and underneath metal tabs on the battery. Scroll up to the battery picture and look at the yellow wires that go to the cell next to the most positive cell. They are glued down under those tabs. However looking at the board it looks like pins 2, 3, 15 and 16 go to ground and pins 1, 4, 14, and 17 go to a circuit. All of these pins go to the thermistors. You can follow the yellow wires.Hi everyone!
Could anyone of you share the specifications /value of NTC thermistor used as Temp sensors in the module? (Resistance Kohm and B value?) It seems each LTC connects to two thermistors and i cannot figure out whether all 4 thermistors are the same or even different, and what are the values.
Any feedback in this regard is much appreciated!
I have been able to decode some of the I3 battery Can bus.
Currently I have working:
-Cell Voltages
Should be able to get the following with the info I have:
-Temperatures
Need to do some logging to get the following:
-Balancing Commands
Have now implementened the code to work with my SIMP BMS, this means the 'base' features are retained.
Tom-evnut/BMWI3BMS
Thanks for the answer, I tried to figure it out before ...I decided to contact the developer directly Sorry, I don't understand your program. Please help with an example of a single post ID. For example (which I have already figured out) to the request ID0A0 37 01 00 00 00 00 FF FF we will receive a response from block 2 ID1A1 with its parts number. I don't understand the id request and the answers for cell voltages,temperatures in separate cells in the block and the most important error messages in it ...I can not find how the block gives an error and blocks the battery BMW i3 Slave Connector pin 3,9 (blue)Did you manage to figure out the purpose and exchange of this bus? |
Thank you for the answer. But I was assuming this part of the code is to detect the module, as in which module is sending the data and not the temperature data within the module. If that is not the case, did anyone find out which part of the SIMPBMS code sends request for Module ID to read data from specific Module. Because it is designed to connect to 8 separate modules right??. Can you help me out here?? thanksThere are definitely 8 battery modules however each module has it's own BMS with 4 temperature sensors in each module. Still not sure how that adds up to 5 though. Would there be temperature sensors as part of the battery heating/cooling system?
Sent from my moto g(8) power lite using Tapatalk
As it returns a 'break' does this mean it is either on or off? If so could be charging interlocks, is the cable attached? Door open etcHi. I have a doubt regarding a part in the SIMP BMS code. I am not sure if this is the right place to ask but could someone please explain why there are only 5 Module ID requests when there are in total if I am not wrong, 8 Modules??
View attachment 122108
Yeah that is true. It is definitely something else and I guess only by testing we can figure what it actually is for. But I have still not found the IDs for the modules in the code. Maybe I need to look better but I dont see the 8 IDS of modules, where it is being detected. Needed help in which part of code reads the Module ID and what are the Hex values of them.As it returns a 'break' does this mean it is either on or off? If so could be charging interlocks, is the cable attached? Door open etc
Sent from my moto g(8) power lite using Tapatalk