Full aluminum type plate heat exchanger for cooling heating part on electric vehicle

Abstract

The invention relates to a full aluminum type plate heat exchanger for cooling a heating part on an electric vehicle. The full aluminum type plate heat exchanger is of an overall brazing structure, and comprises a front end plate, a back end plate and a plurality of heat exchange plate sheets arranged between the two end plates; a cold fluid inlet connecting pipe and a hot fluid outlet connecting pipe are arranged at the positions of two corner pores in the upper portion of the front end plate, and a cold fluid outlet connecting pipe and a hot fluid inlet connecting pipe are arranged at the positions of two corner pores in the lower portion of the front end plate; flow via through holes in the four positions of each heat exchange plate sheet are sequentially connected front and back to form a cold fluid input channel, a hot fluid output channel, a cold fluid output channel and a hot fluid input channel; a clamping cavity inside the heat exchanger forms hot fluid runner cavities and cold fluid runner cavities which are alternatively arranged in sequence; and protrusions arranged on the two heat exchange plate sheets corresponding to each cold fluid runner cavity are in one-to-one contact in the cold fluid runner cavity, brazed connection is achieved, multiple cold fluid flowing channels are formed in the cold fluid runner cavity, and an overall channel cavity structure is formed by the hot fluid runner cavities. The full aluminum type plate heat exchanger is small in weight and high in heat exchange efficiency.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to an all-aluminum plate heat exchanger for cooling heating parts on electric vehicles. Background technique [0002] In the field of automobiles, the common electric vehicles at present mainly include electric family cars and electric buses. There are many heat-generating parts on these electric vehicles. For example, the battery pack is the largest heat-generating part. For the heat-generating parts, timely and effective cooling is required during the working process. At present, liquid-liquid heat exchange or gas-liquid heat exchange is generally used for cooling heat-generating parts. The most critical component in the cooling circuit is the heat exchanger, and the heat exchanger usually adopts an industrial plate heat exchanger. The structure, that is, the gasket is arranged between the plates, and the gasket is used for sealing. The existing plate heat e...

AI Technical Summary

Problems solved by technology

[0003] 1. The materials of plate heat exchangers in the prior art are mainly four types of cold-rolled thin plates: austenitic stainless steel, titanium and titanium alloys, nickel and nickel alloys, and copper. The above materials are dense and overweight, which is not conducive to vehicles lightweight

[0004] 2. The material quality of the existing plate heat exchanger is large, resulting in a large heat capacity, which affects its heat transfer performance, and the heat transfer efficiency needs to be further improved

[0005] 3. The plate of the existing plate heat exchanger usually adopts a herringbone corrugated structure, so that the flow resistance of the formed flow channel is large

[0006] 4. The plates of the existing plate heat exchanger are sealed and connected by gaskets. The sealing performance is poor, and leakage is easy to occur. The pressure resistance is low, generally about 1MPa, and the temperature resistance is limited by the gasket material.

[0010] In the actual application of vehicles, the thermal characteristics and pressure drop requirements of the cold and hot fluids are often not the same, that is, "asymmetric heat exchange fluid", the heat transfer performance of the cold and hot sides cannot meet the requirements at the same time, or allow The pressure drop cannot be fully utilized, resulting in an unnecessary increase in the heat exchange volume. On the one hand, the cost of the heat exchanger is increased, and on the other hand, the space in the car is wasted.

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