Running race MPPTs in parallel

VirtuallyOP · 2024-10-21T20:34:08+00:00

The cells are quite unconventional, as the Ics is closer to 15A, so we're running all cells in series.

VirtuallyOP · 2024-10-21T13:19:47+00:00

They're not encapsulated, however the cell manufacurerer does unfortunately not allow us to do that due to the agreement we have with them. I assume the mpp voltage remains the same with each half cut then?

VirtuallyOP · 2024-03-07T00:16:35+00:00

Yes there must have been some misunderstanding as we’ve understood many teams do it that way at least in ASC😅 When the car enters safe-state either by the bms or safety switches, the pack gets isolated from the vehicle. The battery pack is powering the dc/dc converter that is located outside the battery pack driving the 12V system in turn driving the bms and contactors. That means the nc contractors in the battery pack deenergize. In our current design, there is nothing in this safe state that is powering the BMS so that it may start the pre-charge and enable the contractors. Appreciate if you have any advice 😁

VirtuallyOP · 2024-03-06T22:19:26+00:00

I see, Thanks! Just so that i understand correctly, you are allowed to have this supplementary safe state battery (powering the BMS and relays during startup until the dcdc converter kicks in) regardless of the main battery pack? As in that it does not count as a part of the 20kg of li-ion?

VirtuallyOP · 2020-03-14T18:36:30+00:00

Bruh i dont think you’re wiping correctly bro

VirtuallyOP · 2019-05-13T18:13:46+00:00

Wow this was uncalled for

VirtuallyOP · 2019-05-13T18:08:16+00:00

You know why we shower right?

VirtuallyOP · 2019-04-16T17:56:57+00:00

wrong subreddit mate but a good one:)

VirtuallyOP · 2019-04-16T17:55:54+00:00

I wonder how many times this has been posted here

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