Graphite clamp for battery liquid cooling plate brazing and clamping method of thereof

Abstract

The invention relates to the technical field of thermal management of new energy vehicle power batteries, and discloses a graphite clamp for battery liquid cooling plate brazing, which comprises a stainless steel bracket, wherein a groove space is arranged in the central area of the stainless steel bracket, a graphite bottom plate is arranged on the groove space, and a graphite upper plate is arranged above the graphite bottom plate. The graphite bottom plate and the graphite upper plate are each provided with a first process positioning hole and a second process positioning hole, wherein the first process positioning holes correspond to each other, and the second process positioning holes correspond to each other. The invention further discloses a clamping method of the graphite clamp for battery liquid cooling plate brazing. According to the graphite clamp for battery liquid cooling plate brazing and the clamping method thereof, the flatness and smoothness of the surface of the liquid cooling plate obtained after brazing forming are guaranteed, and the brazing qualification rate of the flat plate type liquid cooling plate is increased.

Description

technical field [0001] The invention relates to the technical field of thermal management of power batteries of new energy vehicles, in particular to a graphite clamp for brazing a battery liquid cold plate and a clamping method thereof. Background technique [0002] At present, in the battery thermal management parts industry, the brazing production of flat-type liquid-cooled plates usually uses stainless steel bracket-type brazing fixtures to clamp and fix the liquid-cooled plates, put the liquid-cooled plates in the brazing fixtures, and then Enter the brazing furnace to braze the liquid cold plate. [0003] Most of the existing brazing fixtures are made by stainless steel tailor welding, and the flatness of the brazing fixtures cannot be guaranteed, which will affect the flatness of the surface of the water-cooled plate after brazing; at the same time, the use of stainless steel brazing fixtures will cause liquid after brazing. A black oxide layer appears on the surface...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing brazing fixtures are made by stainless steel tailor welding, and the flatness of the brazing fixtures cannot be guaranteed, which will affect the flatness of the surface of the water-cooled plate after brazing; at the same time, the use of stainless steel brazing fixtures will cause liquid after brazing. A black oxide layer appears on the surface of the cold plate, which seriously affects the smoothness of the surface of the liquid cold plate; in addition, the bracket clamp has very high requirements for the clamping control of the entire plane of the liquid cold plate. If the liquid cold plate cannot be clamped uniformly, the brazing During the welding process, it will lead to poor welding, which will directly lead to the scrapping of the liquid cooling plate

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