Temperature testing device for acquiring temperature distribution of single battery and preparation method of temperature testing device

The invention provides a temperature testing device for acquiring temperature distribution of a single battery and a preparation scheme, belongs to the technical field of temperature testing of fuel cells, and solves the problems that a sensor in the prior art is large in size, low in resolution ratio and poor in reliability, temperature measuring holes need to be prefabricated in a bipolar plate, and batch production is not facilitated due to the fact that wires and optical fibers are adopted. The device adopts a film thermocouple structure as a frame of a single battery. Edge lugs distributed in an array mode are arranged on one pair of side edges of the temperature testing device, a film thermocouple structure in the middle of the edge lugs on the two sides comprises a PEN film, a pure copper foil, a solder paste film, a pure copper plating layer, a constantan foil and a PEN film from top to bottom, and a fuel gas port, an air port and a cooling liquid port are formed in the other pair of side edges. Each