Fuel cell cooling fin

Abstract

A fuel cell cooling fin comprises more than one heat dissipating unit; each heat dissipating unit comprises more than one heat dissipating body; each heat dissipating body is formed by two pieces of identically structured aluminum sheets through opposite connection, semicircle structures with punch forming are distributed on the two aluminum sheets and are oppositely connected to form a channel, cut-through grooves with punch forming distributed on the two aluminum sheets are oppositely connected to form a cavity, the cavity is internally provided with a liquid pipeline forming a liquid circulation flow path, and the head end / tail end of the liquid pipeline are collected to the channel of the aluminum sheets to form a circulation flow path. The fuel cell cooling fin improves the existing laminated engraving process into a stamping combined aluminum tube method, and adopts aluminum sheet one-time stamping molding, has high efficiency, low cost and uniform thickness uniformity, the strength is obviously improved compared with the engraving process, the cooling fins are combined to become one separated component, and are flexible in combination and assemble, easy to assemble and highin connection reliability, the fuel cell cooling fin can cope with extreme conditions such as bumps and distortion in vehicles, and when the fuel cell cooling fin is damaged, it is easy to find problems and replace parts.

Description

technical field [0001] The invention relates to a fuel cell cooling fin, which belongs to the technical field of fuel cell thermal management. Background technique [0002] The present invention relates to fuel cell technology. Fuel cell technology is an important branch technology in new energy vehicles. With the policy guidance of the country's new energy vehicles, fuel cell technology has been rapidly developed. [0003] Fuel cells, such as proton exchange membrane fuel cells, have the advantages of low operating temperature, high specific power, and fast cold start. Based on the working mechanism of the fuel cell, the chemical energy of the fuel is converted into electrical energy and heat energy. As the reaction proceeds, the heat inside the battery continues to accumulate. If the heat is not managed, the local heat inside the battery will continue to rise, endangering the normal operation of the battery. [0004] Normally, the heat transfer of fuel cells is mainly thr...

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Problems solved by technology

[0005] The waste heat generated by fuel cells is relatively large. Existing fuel cell heat sinks are mainly engraved on one or both sides, and finally aggregated into a square frame structure. The main defects of the main flow channel are: 1. The cost is high, and the cost of engraving grooves on a 1mm plate is very high; 2. It is difficult to ensure the uniformity of the thickness of the flow channel, and the thinnest part is required to be 0.4mm. ;3. The sealing reliability of the overall board surface is poor, and the overall cooling fins are stacked layer by layer. Only two bolts at both ends are used for fastening, and the fastening force is uneven. liquid risk

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