The present invention discloses a
power battery pack waterproof and breathable valve detection device, comprising: a
power battery pack, which is provided with a battery
management system; a waterproof and breathable valve, which is provided on the
power battery pack and communicated with the interior of the power
battery pack; a first temperature and
humidity sensor, which is provided on one side of the waterproof and breathable valve and located inside the power
battery pack; a second temperature and
humidity sensor, which is provided on one side of the waterproof and breathable valve and located outside the power
battery pack; an embedded unit, which is respectively connected to the battery
management system, the first temperature and
humidity sensor and the second temperature and humidity sensor; a
microcontroller, which is connected to the embedded unit; and an automobile
electronic control system, which is connected to the
microcontroller; the embedded unit obtains operating condition data of the power battery pack and temperature and humidity data on both sides of the waterproof and breathable valve, generates a calculation result and transmits it to the
microcontroller, the microcontroller processes the calculation result to generate a
processing result, determines whether the waterproof and breathable valve function fails, generates an analysis result and sends it to the automobile
electronic control system to remind the driver.