Re: BMW LIM based CCS2 Controller
Posted: Thu Jun 03, 2021 1:36 pm
Brilliant thanks. Happy to pay for it.
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CCS communications is identical between CCS1 and CCS2. Only the physical port is different. One of the few nice things about CCS.EVconverter wrote: ↑Thu Jun 03, 2021 12:02 pm As a not-very-educated-in-electronics person, I'm deeply interested in purchasing whatever shortcuts to CCS charging goodness I can get.
Seems like most people on here are in Europe. I sincerely hope there's a CCS type 1 adaptation that can be had using this method.
Does anyone know if CCS type 1 and type 2 are very different, other than the physical charging connectors?
I would like to buy one from you toomuehlpower wrote: ↑Thu Jun 03, 2021 1:08 pmMay be. Unfortunately, jlcpcb does not have the transmission amplifier in its range. I can send you a sample if you want.Jack Bauer wrote: ↑Thu Jun 03, 2021 11:56 am At least they are honest about it unlike chademo. Will you be selling those boards muehlpower?
Where is a way to get a Gerber files for this PCB?muehlpower wrote: ↑Thu Jun 03, 2021 1:08 pm May be. Unfortunately, jlcpcb does not have the transmission amplifier in its range. I can send you a sample if you want.
I just purchased a 2018 LIM module, the plug components, CCS1 port, and I already have a VCU for my Lexus gs450h motor setup. What else do I need to get this going also?EVconverter wrote: ↑Thu Jun 03, 2021 12:02 pm As a not-very-educated-in-electronics person, I'm deeply interested in purchasing whatever shortcuts to CCS charging goodness I can get.
Seems like most people on here are in Europe. I sincerely hope there's a CCS type 1 adaptation that can be had using this method.
Does anyone know if CCS type 1 and type 2 are very different, other than the physical charging connectors?
Read threw this thread:windydrew wrote: ↑Wed Sep 15, 2021 12:54 pmI just purchased a 2018 LIM module, the plug components, CCS1 port, and I already have a VCU for my Lexus gs450h motor setup. What else do I need to get this going also?EVconverter wrote: ↑Thu Jun 03, 2021 12:02 pm As a not-very-educated-in-electronics person, I'm deeply interested in purchasing whatever shortcuts to CCS charging goodness I can get.
Seems like most people on here are in Europe. I sincerely hope there's a CCS type 1 adaptation that can be had using this method.
Does anyone know if CCS type 1 and type 2 are very different, other than the physical charging connectors?
What is up with the value R14 in your revised schematic? Is that not used? I copied your schematic and added two relays that have 15 ohm dpak power resistors to keep the LIM contactor drivers happy. Does this look correct? I did presently omit your R14, but will add back pending your feedback.muehlpower wrote: ↑Tue Jun 01, 2021 1:01 pm i changed my circuit a little and now it's fine. The circuit is required to measure the voltage at the charging connector and to pass it on to the LIM
Sensing.png
A resistor from TLV6001 pin 4 to ground reduce the output voltage at 0V input, a resistor to 5V increases the output voltage. In my prototypes I installed 220kOhm to 5V and replaced one of the 100kOhm resistors on the input side with 82kOhm, which improved the accuracy.jon volk wrote: ↑Fri Sep 17, 2021 1:10 amWhat is up with the value R14 in your revised schematic? Is that not used? I copied your schematic and added two relays that have 15 ohm dpak power resistors to keep the LIM contactor drivers happy. Does this look correct? I did presently omit your R14, but will add back pending your feedback. VOLT_DET.pdfmuehlpower wrote: ↑Tue Jun 01, 2021 1:01 pm i changed my circuit a little and now it's fine. The circuit is required to measure the voltage at the charging connector and to pass it on to the LIM
Sensing.png
muehlpower wrote: ↑Fri Sep 17, 2021 3:17 pmA resistor from TLV6001 pin 4 to ground reduce the output voltage at 0V input, a resistor to 5V increases the output voltage. In my prototypes I installed 220kOhm to 5V and replaced one of the 100kOhm resistors on the input side with 82kOhm, which improved the accuracy.jon volk wrote: ↑Fri Sep 17, 2021 1:10 amWhat is up with the value R14 in your revised schematic? Is that not used? I copied your schematic and added two relays that have 15 ohm dpak power resistors to keep the LIM contactor drivers happy. Does this look correct? I did presently omit your R14, but will add back pending your feedback. VOLT_DET.pdfmuehlpower wrote: ↑Tue Jun 01, 2021 1:01 pm i changed my circuit a little and now it's fine. The circuit is required to measure the voltage at the charging connector and to pass it on to the LIM
Sensing.png
I think you're missing a resistor from OUT to -IN on IC2muehlpower wrote: ↑Fri Sep 17, 2021 3:17 pmA resistor from TLV6001 pin 4 to ground reduce the output voltage at 0V input, a resistor to 5V increases the output voltage. In my prototypes I installed 220kOhm to 5V and replaced one of the 100kOhm resistors on the input side with 82kOhm, which improved the accuracy.jon volk wrote: ↑Fri Sep 17, 2021 1:10 amWhat is up with the value R14 in your revised schematic? Is that not used? I copied your schematic and added two relays that have 15 ohm dpak power resistors to keep the LIM contactor drivers happy. Does this look correct? I did presently omit your R14, but will add back pending your feedback. VOLT_DET.pdfmuehlpower wrote: ↑Tue Jun 01, 2021 1:01 pm i changed my circuit a little and now it's fine. The circuit is required to measure the voltage at the charging connector and to pass it on to the LIM
Sensing.png
DC DC_HGND must be connected to HGND and not HLDO_IN to HGND.
i don't think it will work. OUTP and OUTN are not 0V with an input of 0V, its 1.44V. At 500V OUTP = 2.44V and OUTN = .44V approx
Got it, 1.44 centered common mode. Re-doing doing the calculations just needed to replace my R28 with the same 6080 ohm value. Values seem to align close enough and with the parallel resistor circuit, that gives me plenty of options for tweaking in the future. Without this change, it seems values would have been 0HVDC @ ~2.3v and 500HVDC @ ~5vmuehlpower wrote: ↑Sun Sep 19, 2021 1:42 pmi don't think it will work. OUTP and OUTN are not 0V with an input of 0V, its 1.44V. At 500V OUTP = 2.44V and OUTN = .44V approx
I actually already moved it to a 4 pin stlink connection since I can’t seem to find my Tag-connect cable.EV_Builder wrote: ↑Mon Sep 20, 2021 8:44 am Can you add a header for connecting the ST-Link device?
I was thinking embedding the USB ST-Link within each case.
They are €12,-
Impressive work!
Oh I might need to steal borrow this. Seems much better than the hodgepodge of boards in my car now.jon volk wrote: ↑Sun Sep 19, 2021 6:55 pm I’ll post the final files to my GitHub after I’m done. It’s going on a board with an STM32F413 to handle two Volt BMS systems and any other battery related needs. Have the BMS code generally done but untested. Need to port the necessary CCS from Damien over to c/st-hal.
My idea is to make a small cutout in the casing and glue the linkjon volk wrote: ↑Mon Sep 20, 2021 11:06 amI actually already moved it to a 4 pin stlink connection since I can’t seem to find my Tag-connect cable.EV_Builder wrote: ↑Mon Sep 20, 2021 8:44 am Can you add a header for connecting the ST-Link device?
I was thinking embedding the USB ST-Link within each case.
They are €12,-
Impressive work!
8372FD07-873C-457C-856C-B2E976179CDF.jpeg