GGoodrum
1 MW
First, to clear up one point, I have used 15s a123 26650-based packs with 12s RC controllers for at least four years now, going back to my early electric Raptor RC helicopters. I think the absolute voltage that a Phoenix craps out at is around 53-54V.
As for the pack configurations, what I'd like to see is basically just a big "Turnigy"/RC-styled sub-pack, with 6 or 8 20Ah cells in series, shrink-wrapped together, with large main power leads (8 AWG?) with either big Andersons or 8mm bullets, and a balancer plug pigtail. For the latter, RC packs typically use JST-XH connectors 22-gauge wires for the balancer pigtails. For this big boy "RC"-style pack, I think at least 18-gauge wires and a suitable connector with pins that can handle 2A, or so.
Richard and I are testing a major new update/revision to our LiFePO4/LiPo BMS unit. I will post more about this in the day, or so, in the BMS thread, but basically, there will be multiple 6 or 8-channel sections that will be stackable, along with one more board with the charger control logic, which is all new. Here's what one current section looks like:
View attachment 6s LiPO BMS-v3.9a.png
Each channel can support shunt currents up to 2A, and those familiar with the existing BMS series will note this has fewer parts per channel. There will be active cooling via fans that will mount on the sides of the stack of boards.
Anyway, more about this later, but this new BMS is modular, and able to support much higher voltage setups (400V+...) from a single control board. The modularity will match up well with the "RC"-type sub-pack configurations I described above.
-- Gary
As for the pack configurations, what I'd like to see is basically just a big "Turnigy"/RC-styled sub-pack, with 6 or 8 20Ah cells in series, shrink-wrapped together, with large main power leads (8 AWG?) with either big Andersons or 8mm bullets, and a balancer plug pigtail. For the latter, RC packs typically use JST-XH connectors 22-gauge wires for the balancer pigtails. For this big boy "RC"-style pack, I think at least 18-gauge wires and a suitable connector with pins that can handle 2A, or so.
Richard and I are testing a major new update/revision to our LiFePO4/LiPo BMS unit. I will post more about this in the day, or so, in the BMS thread, but basically, there will be multiple 6 or 8-channel sections that will be stackable, along with one more board with the charger control logic, which is all new. Here's what one current section looks like:
View attachment 6s LiPO BMS-v3.9a.png
Each channel can support shunt currents up to 2A, and those familiar with the existing BMS series will note this has fewer parts per channel. There will be active cooling via fans that will mount on the sides of the stack of boards.
Anyway, more about this later, but this new BMS is modular, and able to support much higher voltage setups (400V+...) from a single control board. The modularity will match up well with the "RC"-type sub-pack configurations I described above.
-- Gary