Comments (3)
Good point. I did thermal camera shots with the bms-8s50-ic in the past and the temperature increase was very low, something around 40°C at 20°C ambient. But it was a 4-layer PCB and the resistor value was 33R, so the situation will be a bit different here. I'll double-check and potentially try to add a bit more copper below the resistors.
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As mentioned in the other PR, I'm switching to 4-layer PCB. In addition to that I added large pads on the top and bottom layers connected through thermal vias to spread heat, see below:
The picture doesn't show the two inner layers which provide another copper pour for heat spreading. This is very similar to previous designs and I'm confident it will provide enough heat removal.
from bms-c1.
Closing this now as I don't think there will be any issue with the updated design anymore. If testing shows different results we can re-open the issue.
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Related Issues (20)
- Cell Balancing HOT 1
- schottky diode selection
- GPIO9 (BOOT) pin not broken out
- The status of the project HOT 6
- Q12 has wrong pinout
- Hardware v0.3 Testing - Tracking Issue HOT 7
- BMS-C1: Kicad Library HOT 1
- Intention of CHG+ pad HOT 2
- D16 Schottky diode inverted? HOT 2
- Thermal Performance Tests
- Overvoltage and Undervoltage Testing Issue with BMS_C1 Board HOT 6
- BMS non-responsive after working for a few minutes. HOT 5
- "flashing quickly" LED won't stop HOT 11
- Clarification needed on copper thickness of inner PCB layers HOT 5
- Minor - correction on schematics HOT 1
- In file bq769x2_emul. c, The size defined by subcmd_mem seems to exceed the actual required size HOT 2
- Fix NPTH clearance in v0.4 HOT 5
- CAN bus testing HOT 2
- .
- Support for daisy chaining (or otherwise connecting) multiple LibreSolar BMS for stackable energy storage packs HOT 2
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