NorthTown2022
New Member
When I showed up at camp this afternoon I was surprised to hear the BMS alarm going off.
The JBD dashboard was reporting a temp of 38.4C, and a "charge timeout" protection error. Both charging AND discharging were enabled:
I'm experimenting with an LPG heater in the powerhouse and an insulated enclosure for the cells/BMS. Seeing the BMS temp at 38.5C I Immediately assumed the BMS went into over temp. My settings were 45C and 40C.
I've got two additional sensors in the enclosure, one buried between the cells (beside BMS's external temp sensor) and a Ruuvi inside the enclosure. I own a GX device so I went in under the advanced tab. I checked the period of days I was away and YES warmer than I'd like. The max temp the battery sensor reported was 37C (only 1.4C lower than BMS) and the Ruuvi sensor reported 35.7C, still much cooler than 45C the BMS was set to trigger at. All sensors were recently calibrated together at ~25C.
@sunshine_eggo suggested bumping the trigger and release temps up by 5C to see if it would trigger a release and what do you know the annoying 2 second beeeeeeep went away!
Wonder if it was even related to temp or if this just somehow triggered a release.. I checked all other BMS parameter and cant see anything that could have triggered an alarm.
Any idea what could have caused this?
The JBD dashboard was reporting a temp of 38.4C, and a "charge timeout" protection error. Both charging AND discharging were enabled:
I'm experimenting with an LPG heater in the powerhouse and an insulated enclosure for the cells/BMS. Seeing the BMS temp at 38.5C I Immediately assumed the BMS went into over temp. My settings were 45C and 40C.
I've got two additional sensors in the enclosure, one buried between the cells (beside BMS's external temp sensor) and a Ruuvi inside the enclosure. I own a GX device so I went in under the advanced tab. I checked the period of days I was away and YES warmer than I'd like. The max temp the battery sensor reported was 37C (only 1.4C lower than BMS) and the Ruuvi sensor reported 35.7C, still much cooler than 45C the BMS was set to trigger at. All sensors were recently calibrated together at ~25C.
@sunshine_eggo suggested bumping the trigger and release temps up by 5C to see if it would trigger a release and what do you know the annoying 2 second beeeeeeep went away!
Wonder if it was even related to temp or if this just somehow triggered a release.. I checked all other BMS parameter and cant see anything that could have triggered an alarm.
Any idea what could have caused this?