Liquid-cooled welding head

Abstract

The utility model relates to the technical field of photovoltaic assembly production, in particular to a liquid-cooled welding head which comprises a base and a plurality of heating assemblies arranged on the base at intervals, at least one liquid channel is arranged in the base, and a liquid inlet and a liquid outlet which are communicated with the liquid channel are further formed in the base. Each heating assembly comprises a magnetic core seat, an electromagnetic heating piece, a protective shell and a circuit board, the electromagnetic heating piece is arranged in the magnetic core seat, the circuit board is arranged in the protective shell, and the circuit board is electrically connected with the magnetic core seat. When the liquid cooling medium flows through the liquid channel, heat conducted to the base by the magnetic core bases and the protective shells in the multiple heating assemblies can be taken away, and the liquid cooling effect is better than the air cooling effect.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component production, in particular to a liquid-cooled welding head. Background Art

[0002] In the photovoltaic module busbar welding equipment, after each welding of a group of busbars, the welding head needs to cool down before welding the next group of busbars to prevent the welding head from over-welding the busbars due to too high temperature.

[0003] In the prior art, air cooling is usually used to cool down the welding head. However, the cooling time of the air-cooled welding head is long, which is difficult to meet the speed-up requirements of the welding equipment. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a liquid-cooled welding head.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] A liquid-cooled welding head comprises a base and a plurality of heating components arranged at intervals on the base, wherein at least one liquid channel is provided in the base, and a liquid inlet and a liquid outlet connected to the liquid channel are also provided on the base, each of the heating components comprises a magnetic core seat, an electromagnetic heating element, a protective shell and a circuit board, the electromagnetic heating element is arranged in the magnetic core seat, the circuit board is arranged in the protective shell, and the circuit board is electrically connected to the magnetic core seat.

[0007] Furthermore, the magnetic core seat is arranged on the top of the base, and the protective shell is arranged on one side of the base.

[0008] Furthermore, the heating component also includes a pressing block, and the pressing block and the protective shell are respectively connected to two opposite side walls of the base; a baffle is provided on the top of the base away from the pressing block, and the magnetic core seat abuts against the baffle, and the side wall of the magnetic core seat opposite to the pressing block has a first inclined surface, and the pressing block is provided with a second inclined surface parallel to the first inclined surface, and the second inclined surface abuts against the first inclined surface.

[0009] Furthermore, an anti-bending groove is provided at the bottom of the base.

[0010] Furthermore, an air cooling component is provided in the protective shell, and an air outlet is provided on the protective shell.

[0011] Furthermore, the liquid-cooled welding head also includes a liquid cooler, and the liquid inlet and the liquid outlet are connected to the liquid cooler through a hose.

[0012] Furthermore, a temperature sensor is provided in the magnetic core seat.

[0013] Furthermore, a gas channel is provided in the magnetic core seat, and the gas channel is connected with the adsorption hole on the top of the magnetic core seat.

[0014] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0015] The utility model provides a liquid-cooled welding head, including a base and a plurality of heating components arranged at intervals on the base, at least one liquid channel is arranged in the base, and a liquid inlet and a liquid outlet connected to the liquid channel are also arranged on the base, each heating component includes a magnetic core seat, an electromagnetic heating element, a protective shell and a circuit board, the electromagnetic heating element is arranged in the magnetic core seat, the circuit board is arranged in the protective shell, and the circuit board is electrically connected to the magnetic core seat. When the liquid cooling medium flows through the liquid channel, it will take away the heat conducted to the base by the magnetic core seats and the protective shells in the plurality of heating components, and the liquid cooling effect is better than the air cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the liquid-cooled welding head of the utility model;

[0017] Figure 2 It is a left view of the liquid-cooled welding head of the utility model;

[0018] Figure 3 It is a schematic diagram of the assembly relationship of the circuit board, the air cooling component and the protective shell in the utility model.

[0019] Among them: 10, base; 11, liquid channel; 12, anti-bending groove; 20, heating component; 21, magnetic core seat; 211, gas channel; 22, electromagnetic heating element; 23, protective shell; 231, air outlet; 24, circuit board; 25, pressing block; 26, air cooling element; 27, temperature sensor. DETAILED DESCRIPTION

[0020] The technical solution and technical effects of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0021] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features directly contacting, and can also include the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, the terms "upper", "lower", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0023] like Figure 1-Figure 3 As shown, the utility model provides a liquid-cooled welding head, including: a base 10 and a plurality of heating components 20 arranged at intervals on the base 10, the base 10 is provided with at least one liquid channel 11, the base 10 is also provided with a liquid inlet and a liquid outlet connected to the liquid channel 11, each heating component 20 includes a magnetic core seat 21, an electromagnetic heating element 22, a protective shell 23 and a circuit board 24, the electromagnetic heating element 22 is arranged in the magnetic core seat 21, the circuit board 24 is arranged in the protective shell 23, and the circuit board 24 is electrically connected to the magnetic core seat 21. The number of heating components 20 is set as needed, such as one heating component 20 corresponds to one battery string or multiple battery strings.

[0024] The magnetic core seat 21 includes a seat body and a ceramic cover plate. The seat body is provided with a receiving groove, the electromagnetic heating element 22 is arranged in the receiving groove, and the ceramic cover plate is covered on the notch of the receiving groove. The electromagnetic heating element 22 includes a magnetic core and a coil wound on the magnetic core. The base 10, the seat body of the magnetic core seat 21 and the protective shell 23 are made of metal materials with good thermal conductivity. Before welding the busbar, the busbar is placed on the ceramic cover plate on the top of the magnetic core seat 21. After the busbar is heated by the electromagnetic heating element 22, the temperature of the magnetic core seat 21 will increase due to heat conduction. At the same time, the heating temperature of the circuit board 24 itself will also increase. In the process of the liquid cooling medium flowing from the liquid inlet into the liquid channel 11 and flowing out through the liquid outlet, the heat conducted to the base 10 by the magnetic core seat 21 and the protective shell 23 in the multiple heating components 20 will be taken away, so that the magnetic core seat 21 is cooled to the target area temperature. A plurality of heating components 20 are arranged on a base 10. Compared with an air-cooled welding head in which each magnetic core seat 21 is cooled by a fan, the liquid-cooled welding head provided by the present invention has a simpler structure and a better liquid cooling effect than an air cooling effect.

[0025] In an optional embodiment, the core seat 21 is disposed on the top of the base 10 so that the core seat 21 is above the liquid channel 11. The base 10 supports the core seat 21 during the welding process, and the protective shell 23 is disposed on one side of the base 10.

[0026] In an optional embodiment, the heating component 20 also includes a pressing block 25, and the pressing block 25 and the protective shell 23 are respectively connected to two opposite side walls of the base 10; a baffle is provided on the top of the base 10 away from the pressing block 25, and the core seat 21 abuts against the baffle, and the side wall of the core seat 21 opposite to the pressing block 25 has a first inclined surface, and the pressing block 25 is provided with a second inclined surface parallel to the first inclined surface, and the second inclined surface abuts against the first inclined surface. The pressing block 25 is fastened to the base 10 and pressure is applied to the core seat 21, and the core seat 21 is limited and fixed by cooperating with the pressing block 25 and the baffle.

[0027] In an optional embodiment, an anti-bending groove 12 is provided at the bottom of the base 10 . The anti-bending groove 12 is an arch-shaped, inverted V-shaped or inverted U-shaped structure, etc., for increasing the strength of the base 10 .

[0028] In an optional embodiment, an air cooling member 26 is further provided in the protective shell 23, and an air outlet 231 is provided on the protective shell 23. The air cooling member 26 is used to improve the cooling effect of the circuit board 24. Preferably, the air cooling member 26 blows air directly toward the circuit board 24, and the air outlet 231 is provided at the bottom of the protective shell 23 or at a side wall away from the base 10. The cold air generated by the air cooling member 26 takes away the heat of the circuit board 24 and is discharged from the protective shell 23 through the air outlet 231. In the present utility model, the air cooling member 26 is a fan or an air amplifier.

[0029] In an optional embodiment, a liquid cooler is further included, and the liquid inlet and the liquid outlet are connected to the liquid cooler through a hose. The liquid cooler continuously provides liquid cooling medium to the liquid channel 11. The temperature of the liquid cooling medium provided by the liquid cooler is controllable to adjust the cooling temperature of the core seat 21 according to the working conditions.

[0030] In an optional embodiment, a temperature sensor 27 is provided in the core seat 21. The temperature sensor 27 collects the temperature of the core seat 21 in real time and is used to correct the working parameters of the core seat 21 under different working conditions to avoid problems such as cold welding and over-welding caused by changes in the initial welding temperature, thereby ensuring the welding quality.

[0031] In an optional embodiment, a gas channel 211 is provided in the magnetic core seat 21, and the gas channel 211 is connected to the adsorption hole on the top of the magnetic core seat 21. When the gas in the gas channel 211 is extracted, the adsorption hole adsorbs the busbar to fix it on the electromagnetic heating element 22, so that the busbar remains stationary during the entire welding process, thereby ensuring the welding accuracy.

[0032] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A liquid-cooled welding head, characterized in that: The invention comprises a base (10) and a plurality of heating components (20) arranged at intervals on the base (10); at least one liquid channel (11) is arranged in the base (10); a liquid inlet and a liquid outlet communicated with the liquid channel (11) are also arranged on the base (10); each heating component (20) comprises a magnetic core seat (21), an electromagnetic heating element (22), a protective shell (23) and a circuit board (24); the electromagnetic heating element (22) is arranged in the magnetic core seat (21); the circuit board (24) is arranged in the protective shell (23); and the circuit board (24) is electrically connected to the magnetic core seat (21).

2. The liquid-cooled welding head according to claim 1, characterized in that: The magnetic core seat (21) is arranged on the top of the base (10), and the protective shell (23) is arranged on one side of the base (10).

3. The liquid-cooled welding head according to claim 2, characterized in that: The heating component (20) further comprises a pressing block (25), wherein the pressing block (25) and the protective shell (23) are respectively connected to two opposite side walls of the base (10); a stopper is provided on the top of the base (10) on a side away from the pressing block (25), the magnetic core seat (21) abuts against the stopper, the side wall of the magnetic core seat (21) opposite to the pressing block (25) has a first inclined surface, and the pressing block (25) is provided with a second inclined surface parallel to the first inclined surface, and the second inclined surface abuts against the first inclined surface.

4. The liquid-cooled welding head according to claim 1, characterized in that: The bottom of the base (10) is provided with an anti-bending groove (12).

5. The liquid-cooled welding head according to claim 1, characterized in that: An air cooling component (26) is also provided in the protective shell (23), and an air outlet (231) is provided on the protective shell (23).

6. The liquid-cooled welding head according to claim 1, characterized in that: It also includes a liquid cooling machine, and the liquid inlet and the liquid outlet are connected to the liquid cooling machine through a hose.

7. The liquid-cooled welding head according to claim 1, characterized in that: A temperature sensor (27) is provided in the magnetic core seat (21).

8. The liquid-cooled welding head according to claim 1, characterized in that: A gas channel (211) is provided in the magnetic core seat (21), and the gas channel (211) is connected to the adsorption hole at the top of the magnetic core seat (21).

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