kiev
Posts: 1358
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Gen2 OBC and DCDC pictures

Sat Oct 24, 2020 6:44 am

Many thanks to JoeS for making this possible,

Cover and label with new style connector to the MCU,
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underneath the top cover, the OBC is in the upper plenum,
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underneath the bottom cover, the AC Input EMI filter and DCDC converter in bottom plenum,
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DCDC converter, more input wires to CN601 plus microcontroller plus bigger fuse,
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kiev = kenny's innovative electric vehicle

JoeS
Site Moderator
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Joined: Thu Dec 15, 2011 5:47 am
Location: Silicon Valley, California

Re: Gen2 OBC and DCDC pictures

Sat Oct 24, 2020 1:32 pm

Nice photos! That OBC/dc-dc was out a wrecked 2016 i-MiEV. Wonder if the insides are the same as what's being replaced in our older cars under warranty?
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

kiev
Posts: 1358
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Gen2 OBC and DCDC pictures

Sat Oct 24, 2020 1:57 pm

That might explain why some of the mounting brackets were bent.
kiev = kenny's innovative electric vehicle

laoczi2007
Posts: 9
Joined: Wed Nov 11, 2020 12:33 pm

Re: Gen2 OBC and DCDC pictures

Wed Nov 11, 2020 3:31 pm

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I decided to add here photos of another second generation on-board charger. Maybe someone needs numbers and dates. And along with this I have a chattering request. Maybe someone has CIRCUIT DIAGRAMS for 2014? I need to trace the entire circuit from signal pins j1772 to pin number 5 of CN 101 on the top charger board (OBC, photo number 4). I would be very grateful for any information. P.S. This is the HLDD grade, i.e. Lithium Titanate battery 10.5 kWh.

kiev
Posts: 1358
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Gen2 OBC wiring.

Wed Nov 11, 2020 4:30 pm

i don't know if this is what you were looking for, but the J1172 EVVSE port/connector pin 3 is supposed to run the Pin 9 of the E-03 connector at the OBC. It may change wire color at the connector, you will have to check and verify that because i don't have a 2014 to look at. But it will be a gray wire going into the feedthrough and on to the CN101 connector pin 5 on the top board of your picture.

This was drawn up in the schematics post #3 of the OBC thread.
https://i.imgur.com/j8KrMsT.png

Are you having errors, or what is your project?
kiev = kenny's innovative electric vehicle

laoczi2007
Posts: 9
Joined: Wed Nov 11, 2020 12:33 pm

Re: Gen2 OBC wiring.

Thu Nov 12, 2020 12:41 am

kiev wrote:i don't know if this is what you were looking for, but the J1172 EVVSE port/connector pin 3 is supposed to run the Pin 9 of the E-03 connector at the OBC. It may change wire color at the connector, you will have to check and verify that because i don't have a 2014 to look at. But it will be a gray wire going into the feedthrough and on to the CN101 connector pin 5 on the top board of your picture.

This was drawn up in the schematics post #3 of the OBC thread.
https://i.imgur.com/j8KrMsT.png

Are you having errors, or what is your project?


Thank you very much for the information! But all the same, we need the 2014 scheme. Judging by the appearance, there are many differences. There is no project. There is stupidity of the owners of the car. The car came from Japan to Russia without a charging cable. In an attempt to charge the car, the new owner applied 220 volts AC to the signal contacts of J1772. Now the machine does not turn on and there is an exploded SMD element on the top OBC board. There is a P1B2A error that cannot be removed. P1B2A - Regular charging connection signal, short to earth.

kiev
Posts: 1358
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Gen2 OBC and DCDC pictures

Thu Nov 12, 2020 6:46 am

Oh no, that's too bad. i see the damage now that you mentioned it--was there any visible damage on the bottom layer of the small control board? The damage looks to be between pin 5, which is the pilot signal from the EVVSE connector, and pin 6, which is ground. So maybe it just arced over at the connector and didn't really get into the board. If they put the other leg of the 220vac on pin 4 of the J_1772, then that would cause an arc over in the EVECU.

Does the car start to READY--the EVECU located under the rear seat could be damaged depending upon which wires were connected to the 220vac.
kiev = kenny's innovative electric vehicle

laoczi2007
Posts: 9
Joined: Wed Nov 11, 2020 12:33 pm

Re: Gen2 OBC and DCDC pictures

Thu Nov 12, 2020 11:00 am

Yes, it is clear that EV-ECU is seriously damaged. 220vac were applied between the two signal contacts J772. I haven't looked there yet. Hopefully this block has the same design as the 2012 EVECU. Another question arose. EV-ECU for Lithium Ion and Lithium Titanate batteries will be different?

kiev
Posts: 1358
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Gen2 J1772 EVSE signals shorted to AC

Thu Nov 12, 2020 12:01 pm

i don't know for sure, but from the limited [OBC,DCDC, MCU] electronics boards that i have been able to compare, they have changed the circuit boards to a different design. i have posted pictures of the EVECU and BMU boards on this forum somewhere. The functions and the wiring harness may be the same or very close such that there is some interchange possible, but it is not clear to me.

The EV-ECU is the master controller for the whole car and it is tied to a specific VIN, so any replacement needs the programming of the MUT-3 tool to enter the proper value. But it also holds the DTCs and if you are able to read those, then it would indicate some functionality still exists. So maybe the internal damage is limited and repairable?

Let me know what you need for component identification and circuit tracing for the OBC and i'll help you there; i don't have a 2014 EV-ECU, but if you post hi-res pictures we might be able to do some good there too.
kiev = kenny's innovative electric vehicle

laoczi2007
Posts: 9
Joined: Wed Nov 11, 2020 12:33 pm

Re: Gen2 J1772 EVSE signals shorted to AC

Thu Nov 12, 2020 12:37 pm

kiev wrote:i don't know for sure, but from the limited [OBC,DCDC, MCU] electronics boards that i have been able to compare, they have changed the circuit boards to a different design. i have posted pictures of the EVECU and BMU boards on this forum somewhere. The functions and the wiring harness may be the same or very close such that there is some interchange possible, but it is not clear to me.

The EV-ECU is the master controller for the whole car and it is tied to a specific VIN, so any replacement needs the programming of the MUT-3 tool to enter the proper value. But it also holds the DTCs and if you are able to read those, then it would indicate some functionality still exists. So maybe the internal damage is limited and repairable?

Let me know what you need for component identification and circuit tracing for the OBC and i'll help you there; i don't have a 2014 EV-ECU, but if you post hi-res pictures we might be able to do some good there too.


Thank you very much for your help! I will take photos with good resolution after opening the EV-ECU and post them here along with the measurement results. Maybe it makes sense to create a separate topic for this?

P.S. I have not given up trying to find the 2014 circuit, but the probability is not great.

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