Testing device for controllable temperature field of solid oxide fuel cell

The invention discloses a testing device for a controllable temperature field of a solid oxide fuel cell. The testing device comprises a strong heat source, a strong cold source, a temperature control mechanism, a heat preservation mechanism and a gas pipeline, the strong heat source and the strong cold source serve as constant-temperature heat sources with variable temperatures and are arranged at the two ends of the SOFC single battery; a resistance wire I in the strong heat source is heated to enable the strong heat source to reach a preset temperature, and the cold air flow in the strong cold source is changed and the resistance wire I is heated to enable the strong cold source to reach a preset temperature, so that the temperature field of the SOFC single battery is controlled; meanwhile, the thermal insulation layer, the heat shield, the middle thermal interlayer and other structures simulate the thermal environment of actual work; metal with high heat conductivity coefficient is used as a heat conducti