Heat-setting metal spraying frame clamp for automobile electric drive capacitor core

Abstract

The invention discloses a heat-setting metal spraying frame clamp for an automobile electric drive capacitor core. The heat-setting metal spraying frame clamp comprises a rack, a baffle plate, a frame, a pressing assembly and an air cylinder. The rack is of a frame structure. The frame is arranged in the rack, and the lower end of the frame abuts against the bottom end of the interior of the rack.The baffle plate is arranged at the rear end of the rack; and the rear end of the frame abuts against the baffle plate. Through the specially-made heat-setting metal spraying frame clamp, a metal spraying process of the flat core is optimized from winding pre-pressing, hot pressing, wrapping, metal spraying, unwrapping and heat setting to winding pre-pressing, heat setting specially-made metal spraying frame upper clamping, metal spraying, heat setting and unclamping; the whitening of the end surface of the core is avoided, so that the contact resistance between the end surface of the core and a metal spraying layer is smaller, and higher overload current can be borne; the impact of pressure generated by hot pressing and uneven temperature conduction on the core film is avoided, and the withstand voltage of the core is greatly improved.

Description

technical field [0001] The invention relates to the technical field of gold-spraying flat cores of capacitors, in particular to a heat-setting gold-spraying frame fixture for electric drive capacitor cores of automobiles. Background technique [0002] Film capacitors use metal foil as an electrode, and it is laminated with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends, and then wound into a cylindrical capacitor. According to the type of plastic film, it is called polyethylene capacitor (also called Mylar capacitor), polypropylene capacitor (also called PP capacitor), polystyrene capacitor (also called PS capacitor) and polycarbonate capacitor. [0003] The gold spraying process uses heat sources such as arcs or flames to melt all kinds of solder materials to be sprayed and atomize them under the action of high-pressure air. The pulverized metal particles are sprayed at high speed in the film gap on the surface of the capacit...

AI Technical Summary

Problems solved by technology

[0004] The existing gold-spraying process for capacitors is generally pre-winding + hot-pressing + wrapping + gold-spraying + unwrapping + heat setting; Large, the overload current carrying capacity is poor; on the other hand, due to the impact of the pressure generated by hot pressing and uneven temperature conduction on the core film, the withstand voltage of the flat core is greatly reduced

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