Large current-passing water-proof combination structure and assembly method

Abstract

The invention discloses a large current-passing water-proof combination structure and an assembly method. The large current-passing water-proof combination structure comprises a board-end wiring combination and a wire-end wiring combination. A plastic molding making piece and a wiring copper bar respectively arranged at two sides of a sheet metal are combined to form the board-end wiring combination. A wire rod sequentially passes a nut, a waterproof ring, an insulation body, a wiring box and a waterproof strip and then is crimped with an R-type terminal to form the wire-end wiring combination. The wiring copper bar and the plastic molding making piece are clamped together. The R-type terminal and the wiring copper bar are locked together. When the technical scheme of the invention is adopted, IP65 protection grade requirements and more than 100A current passing requirements can be met, the cost is greatly reduced, the space size of the structure is saved, and assembly and disassembly are convenient.

Description

technical field [0001] The invention mainly belongs to the field of photovoltaic energy storage inverters, and specifically relates to a waterproof composite structure and an assembly method for excessive current. Background technique [0002] In the current industry, it is almost difficult to find connector terminals that can meet IP65 and over-current (above 100A). Very little is used and it is too expensive to produce. In order to find a plug terminal that meets this condition, the terminals in the domestic and foreign markets are either too expensive, too bulky, or unable to meet the requirements of IP65. Waterproof combination structure for excessive current to meet product design requirements. [0003] The following is a detailed description of the combined structure and implementation of the existing plug-in terminals: [0004] The structure of this class is: [0005] 1. Wire end wiring combination: After passing the wire 4 through the nut 5, waterproof ring 6, an...

AI Technical Summary

Problems solved by technology

[0009] 1. In the case of limited design space of the whole machine, since the disassembly and assembly of the terminal is to separate the wire end and the board end by rotating the thread, it is extremely inconvenient for customers to disassemble and assemble (rotate the locking nut 17 hand and another terminal interference)

[0010] 2. Since the conductive copper core 16 of the terminal is produced by machining, the internal buckle locking method is complicated, and there are too many plastic mold parts, resulting in high product cost

[0011] 3. Since the conductive copper core 16 used in this method is too thin, M6 nuts are used to connect with the wiring copper bar 3, so the overcurrent capacity can only meet about 80 amperes

Unable to meet design requirements

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