Ceramic welding head for tin soldering of junction box

Abstract

The ceramic welding head comprises a fixing area, a ceramic body, a welding wire adding area and a welding area, the welding area is composed of a ceramic baffle with three faces surrounded, an opening is formed in the lower edge, below the welding wire adding area, of the ceramic baffle, and the opening is formed in the middle of the lower edge of the ceramic baffle. And an opening is gradually opened from top to bottom. The tin wire is conveyed above the welding wire adding area through the tin adding pipe, the heating copper pipe transmits heat to the heating part of the copper pipe through the heat transfer part to heat the ceramic baffle of the ceramic welding head, and the added tin wire is promoted to be rapidly melted; the wind power of the cooling wind is adjusted to cooperate with the opening at the lower edge of the ceramic baffle to promote the soldering tin liquid to quickly flow to the corresponding welding part of the junction box to completely cover the outgoing line, so that the outgoing line is welded more firmly, and the problems of residual tin beads, soldering tin protrusions, adhesion with the upper tin wire and the like above the outgoing line are avoided; and the soldering speed is increased, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a soldering joint, in particular to a ceramic soldering joint used for soldering a junction box. Background Art

[0002] In recent years, with the continuous reduction of the cost of photovoltaic power generation, photovoltaic power generation has gradually become the main energy source in the new power system. As the core power generation equipment of photovoltaic power stations, the safety and reliability of component products will directly affect the long-term stable operation of power stations and even power systems. As an important component, the junction box is responsible for current output and bypass. The reliability and stability of its welding directly affect the stable operation of the photovoltaic power generation system. At present, the welding of the junction box mainly involves soldering the lead wire to the metal part of the box body. Poor tinning or unmelted tin at the bottom of the junction box causes a long welding time; problems such as cold soldering or loose welding of the lead wire will cause poor contact and resistive thermal effect in the subsequent operation of the power station. The continuous heating at the cold soldering position causes the junction box to deform. In severe cases, the junction box burns and even causes a fire. In order to improve the welding quality of the junction box and shorten the welding time, a square ceramic welding head with tin soldering is used to replace the original round ceramic welding head. During welding, the welding wire is gradually fed to the square ceramic welding head to add excessive tin to improve the welding quality of the junction box. After replacing the square ceramic welding head, the solder cannot flow quickly and smoothly to the welding position to completely cover the lead wires during the welding pressure process. After welding, there are problems such as tin beads, solder protrusions, and adhesion to the tin wire above. Utility Model Content

[0003] Purpose of the utility model: The purpose of the utility model is to ensure that the added welding wire flows down smoothly after melting to cover the lead-out wires, thereby improving the welding quality of the junction box, and to provide a ceramic welding head for soldering the junction box.

[0004] Technical solution: The ceramic welding head for soldering the junction box described in the utility model includes a fixing area, a ceramic body, a welding wire adding area and a welding area. The welding area is composed of a ceramic baffle surrounded by three sides; the lower edge of the ceramic baffle below the welding wire adding area is provided with an opening to promote the smooth flow of solder.

[0005] Furthermore, the opening is a gradually opening structure, which is arranged in the middle of the lower edge of the ceramic baffle below the welding wire adding area, and adjusts the wind force and direction of the cooling wind to promote the natural flow of solder during tin addition welding to completely cover the lead-out wires, thereby avoiding problems such as residual tin beads above the lead-out wires, solder protrusions, and adhesion to the tin wires above.

[0006] Furthermore, the width of the opening is 1-2.5 mm, preferably 2.25 mm, and the depth of the opening is 0.5-1.5 mm, preferably 1.06 mm. The appropriate opening size combined with cooling air can allow sufficient solder liquid to flow quickly to the welding area, covering the lead wires from three sides, ensuring the firmness of the welding, improving the welding quality and speed, and improving production efficiency.

[0007] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. The opening at the lower edge of the ceramic welding head cooperates with the cooling air to ensure that the solder flows naturally and spreads flat to completely cover the lead-out wires during tinning welding, avoiding problems such as residual tin beads above the lead-out wires, solder protrusions, and adhesion to the upper tin wires; 2. The lead-out wires are tinned on three sides to ensure their welding firmness; 3. The rate of tinning welding is improved, and production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 It is an application schematic diagram of the utility model. DETAILED DESCRIPTION

[0010] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0011] like Figure 1 A ceramic welding head for soldering a junction box shown in the figure comprises a fixing area 1, a ceramic body 2, a welding wire adding area 3 and a welding area 4. The welding area 4 is composed of a ceramic baffle 5 surrounded on three sides. An opening 6 is provided at the lower edge of the ceramic baffle 5 below the welding wire adding area 3. The opening 6 is arranged in the middle of the lower edge of the ceramic baffle 5 below the welding wire adding area 3, and has a gradually opening structure from top to bottom. The width of the opening 6 is 2.25 mm and the depth is 1.06 mm.

[0012] like Figure 2 As shown, the ceramic welding head 8 with an opening at the lower edge of the ceramic baffle 5 is assembled with the copper tube for tinning welding of the junction box. The tin wire is gradually added above the welding wire adding area 3 through the tinning tube, and the heated copper tube transfers heat to the heating part 7 of the copper tube through the heat transfer part 9 to heat the ceramic baffle 5 of the ceramic welding head 8, so that the added welding wire is melted quickly, and the wind force of the cooling wind is adjusted to cooperate with the opening at the lower edge of the ceramic baffle 5 to cause the solder liquid to flow quickly to the corresponding welding part of the junction box to fully cover the lead wire, so that the lead wire welding is more firm.

Claims

1. A ceramic welding head for soldering a junction box, comprising a fixing area (1), a ceramic body (2), a welding wire adding area (3) and a welding area (4), wherein the welding area (4) is composed of a ceramic baffle (5) surrounded on three sides; characterized in that: The lower edge of the ceramic baffle (5) below the welding wire adding area (3) is provided with an opening (6) for promoting the smooth flow of solder.

2. The ceramic welding head for junction box soldering according to claim 1, characterized in that: The opening (6) is a gradually opening structure.

3. The ceramic welding head for junction box soldering according to claim 2, characterized in that: The opening (6) is arranged in the middle of the lower edge of the ceramic baffle (5) below the welding wire adding area (3).

4. The ceramic welding head for junction box soldering according to claim 2, characterized in that: The width of the opening (6) is 1-2.5 mm.

5. The ceramic welding head for junction box soldering according to claim 4, characterized in that: The width of the opening (6) is 2.25 mm.

6. The ceramic welding head for junction box soldering according to claim 2, characterized in that: The depth of the opening (6) is 0.5-1.5 mm.

7. The ceramic welding head for junction box soldering according to claim 6, characterized in that: The depth of the opening (6) is 1.06 mm.

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