nRF91 BME680 Read The Temperature with vs without battery

RE: nRF91 BME680 Read The Temperature with vs without battery

Kenneth — Wed, 20 Nov 2019 13:29:54 GMT

It's a valid point, and I have asked the team to consider adding a note in documentation that charging circuitry should be moved away from the temperature sensor in a final design to avoid dissipating heat to reach the temperature sensor. May also need to consider wrapping of the plastic casing may be keeping heat inside the closure.

RE: nRF91 BME680 Read The Temperature with vs without battery

Hoang — Wed, 20 Nov 2019 08:57:57 GMT

what do you think Kenneth?

RE: nRF91 BME680 Read The Temperature with vs without battery

Hoang — Tue, 19 Nov 2019 12:30:22 GMT

[quote userid="2111" url="~/f/nordic-q-a/54575/nrf91-bme680-read-the-temperature-with-vs-without-battery/220819"]Sounds to me that it is not the battery that is heating the circuitry,[/quote]

ja, first time, i thought the charging battery stays close to the BME sensor, but NO, I tried to move the battery far away from the sensor, the result was the same.

[quote userid="2111" url="~/f/nordic-q-a/54575/nrf91-bme680-read-the-temperature-with-vs-without-battery/220819"]but for instance regulators and other charging circuitry the dissipate heat enough to heat up the pcb and ic during charging. [/quote]

looks like that. you need to check again by yourself and if the same problem, it will be a bug for pcb design

RE: nRF91 BME680 Read The Temperature with vs without battery

Kenneth — Tue, 19 Nov 2019 12:12:02 GMT

Sounds to me that it is not the battery that is heating the circuitry, but for instance regulators and other charging circuitry the dissipate heat enough to heat up the pcb and ic during charging.

Kenneth