Circuit board of vehicle electrical appliance concentrated distribution box

Abstract

The invention discloses a circuit board of a vehicle electrical appliance concentrated distribution box. The circuit board comprises a printed circuit board and a standard socket on the printed circuit board. The printed circuit board comprises an upper printed circuit board and a lower printed circuit board. The upper printed circuit board is distributed with holes matched with a vehicle standard fuse socket or a relay socket, and holes matched with electric conductive poles are formed in the upper printed circuit board. The vehicle standard fuse socket or a relay socket and the electric conductive poles are respectively inserted in the corresponding vehicle standard fuse socket hole, the corresponding relay socket hole and the electric conductive pole holes provided with bonding pads in the printed circuit board. The vehicle standard fuse socket or the relay socket and the electric conductive poles are respectively exposed on the upper side and the lower side of the upper printed circuit board. Feet of the exposed part of the electric conductive poles are inserted in the holes provided with the bonding pads on the lower printed circuit board, and electric conductive bars are arranged on the lower printed circuit board between the adjacent electric conductive poles. Holes matched with a vehicle board-loaded connector assembly are formed in the lower printed circuit board. The circuit board is applied to vehicle central electrical appliance distribution boxes.

Description

[0001] Technical field: [0002] The invention relates to a circuit board of a centralized distribution box of electric appliances for vehicles. Background technique: [0003] There are roughly two internal electrical structures of the central electrical distribution box for vehicles produced now: copper strip structure and printed circuit board structure. [0004] The central electrical distribution box with copper strip structure uses a mold to make copper strips whose length, width, thickness and shape meet the design requirements, and connects them with the central electrical distribution box connectors (terminals), fuses, and relays. The copper strips are insulated and fixed with insulators, and then fixed on the upper and lower plastic cover plates. Because the copper strip has good conductivity, a large cross-sectional area, and is fixed by insulators, the heat generation is not very large, and generally it will not cause a short circuit due to heat deformation, so i...

AI Technical Summary

Problems solved by technology

However, since all the lines of the central electrical distribution box are concentrated on the printed circuit board, the line density is high, and the thickness of the copper foil is limited by the production process, so the heat generation of the circuit board is large when passing a large current, and the current carrying capacity ( Especially the short-circuit current during failure) is not good, so the reliability is relatively poor

Images