Efficient heat management structure for cooling galvanic pile

Abstract

The invention provides a high-temperature fuel cell galvanic pile. According to the high-temperature fuel cell galvanic pile, plate-shaped heat exchange structures and single batteries are arranged at intervals according to a preset proportion, the plate-shaped heat exchange structure is provided with plate-shaped heat exchange structure connecting holes matched with single battery connecting holes, and the plate-shaped heat exchange structures and the single batteries are fixed through screws; the plate-shaped heat exchange structure comprises a vacuum-sealed heat conduction shell and a 3D porous structure arranged in the heat conduction shell, through holes are formed in the 3D porous structure, and a heat conduction medium is sealed in the heat conduction shell. The sealing problem of a cooling medium circulation line is effectively solved. The one plate-shaped heat exchange structure can conduct heat generated by the plurality of membrane electrodes, so that the membrane electrodes are prevented from being polluted by the cooling medium. The 3D porous structure and the heat conduction medium in the heat conduction shell improve the heat distribution consistency of the galvanic pile through an evaporative cooling principle, and the performance of the galvanic pile is improved. And when the structure is applied to a fuel cell system, the weight and size of the system are reduced, so that the specific power of the system is improved, and the thermal management mode is simple and efficient.

Description

Technical field [0001] The present invention relates to the field of fuel cell technology, and more particularly to a highly efficient thermal management structure for cooling the electric stack. Background technique [0002] Heat management is the core technology of fuel cell stack, and thermal management design leads to fuel cell stack design. The main purpose of thermal management is to remove heat generated by the membrane electrodes by heat transfer, so that the electric stack reaches the thermal balance. The fuel cell stack mainly has the internal cooling and external cooling of the external cooling method, the internal cooling method of the high-power electric stack is mainly in the oil-cooling method, and the heat transfer oil has a high specific heat capacity and thermal conductivity, only lower temperatures during the cooling process. Gradient and pump parasitic power consumption. Such as image 3 The existing oil cooling method shown is the sealing problem of thermal co...

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Problems solved by technology

For example, the operating temperature of the high-temperature methanol fuel cell stack, the heat pipe with water as the internal circulation medium is suitable for this type of stack, and the heat conducted by the heat pipe to the outside of the stack will be exchanged to the cooling medium in the form of natural convection or forced convection, however The application of cooling medium still has the above-mentioned sealing problems

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