A dew point temperature detection device and detection method for fuel cells
A dew point temperature, fuel cell technology, applied in the direction of measuring devices, thermometers with physical/chemical changes, thermometers, etc., can solve the problems that cannot overcome the influence of the dew point temperature detection accuracy of the air temperature to be measured, etc.
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Embodiment 1
[0063] A specific embodiment of the present invention discloses a dew point temperature detection device for fuel cells, such as figure 1 As shown, it includes a controllable solenoid valve and an optical temperature detection device connected in sequence.
[0064] The controllable solenoid valve is set at the front end of the optical temperature detection equipment, and is used to open the air of the fuel cell into the stack pipeline (representing a section of pipeline before the air enters the stack) after it is opened according to the user's detection instruction. The measured air is input to the optical temperature detection device.
[0065] The optical temperature detection equipment is used to detect the temperature of the air to be measured and the mirror surface of the optical mirror in real time; The real-time temperature change of the air judges whether to stop the regulation; after the regulation is over, obtain the temperature fluctuation range of the optical mirr...
Embodiment 2
[0070] Optimization is carried out on the basis of the solution in Example 1. When the insertion flow resistance is required to be high, the inspection device is arranged on the parallel branch of the fuel cell air inlet stack pipeline. When the requirements for insertion flow resistance are not high, the inspection device can be connected in series with the main air pipeline for stacking, that is, the dew point detection device is directly connected in series with the main air pipeline for stacking.
[0071]Preferably, the number of controllable solenoid valves is 2, which are respectively arranged at the front and rear ends of the optical temperature detection device; and all controllable solenoid valves are simultaneously opened according to the user's detection instruction, and are simultaneously closed according to the user's closing instruction after the detection is completed. Specifically, the input end of the controllable solenoid valve 1 is connected to the air inlet ...
Embodiment 3
[0099] The invention also discloses a dew point temperature detection method for a fuel cell, comprising the following steps:
[0100] S1. Build a dew point temperature detection device for the fuel cell on the parallel branch or series branch of the fuel cell air inlet pipeline; the dew point temperature detection device includes a controllable solenoid valve and an optical temperature detection device connected in sequence;
[0101] S2. Open the controllable solenoid valve, and input the air to be measured in the air into the stack pipeline into the optical temperature detection equipment;
[0102] S3. Detect the temperature of the air to be measured and the temperature of the optical reflector in the optical temperature detection device in real time, compare the above two temperatures, and adjust the temperature of the optical reflector according to the obtained temperature difference. The real-time temperature change of the air determines whether to stop the regulation;
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