CN211866974U

CN211866974U - Pressing mechanism and welding device

Info

Publication number: CN211866974U
Application number: CN202020190968.6U
Authority: CN
Inventors: 李文; 徐青
Original assignee: Wuxi Autowell Technology Co Ltd
Current assignee: Wuxi Autowell Technology Co Ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-11-06
Anticipated expiration: 2030-02-21

Abstract

The utility model discloses a hold-down mechanism and welding set, hold-down mechanism be used for setting up on welding set with welding set compresses tightly when heating the welding to the battery piece that stacks and solder strip the position that stacks of battery piece and solder strip, hold-down mechanism includes at least one tucking, every be provided with the gas hole that can blow on the tucking with the tucking compresses tightly the battery piece can be towards compressing tightly the position and blowing when taking with the solder strip. The utility model provides a technical scheme when advancing line location to the battery piece and welding the area through the tucking, still blows through the welded area of tucking, can avoid welding the area high temperature and melt and lead to the bad problem of battery piece of production.

Description

Pressing mechanism and welding device

Technical Field

The utility model relates to a photovoltaic cell subassembly processing technology field specifically relates to a hold-down mechanism and welding set.

Background

In the production process of the photovoltaic cell, a cell piece and a welding strip are sequentially stacked and heated and welded to form a cell string.

However, in the conventional welding and heating process, the solder strip is in a semi-molten state during heating, the tin layer of the solder strip at the junction of the two battery pieces is likely to be molten and dripped, the copper core is exposed, poor contact is caused, and the temperature is abnormally increased during photovoltaic power generation.

Therefore, the problem that the produced battery string is poor due to the fact that the welding strip is melted in the welding process needs to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the battery piece that stacks among the prior art and welding the area because the welding area melts the problem that leads to the product bad in the heating welding process.

In order to achieve the above object, the utility model provides an aspect provides a hold-down mechanism, hold-down mechanism is used for setting up on welding set in order to compress tightly the position that stacks at battery piece and solder strip when welding set heats the welding to the battery piece that stacks and solder strip, its characterized in that, hold-down mechanism includes at least one tucking needle, is provided with the gas blow hole that can blow on every tucking needle in order to compress tightly the position and blow towards when the tucking needle compresses tightly on battery piece and solder strip.

And blowing air to the welding strip at the junction when the battery string is welded, so that the temperature of the welding strip at the junction is slightly reduced, and the copper core is prevented from being exposed due to overheating and melting.

Optionally, each pressing pin comprises a hollow tube for introducing gas and a pressing block for pressing the battery piece and the welding strip, the pressing block is elastically connected to one end of the hollow tube, which faces the part to be pressed, and the gas blowing hole is formed in the pressing block and communicated with the hollow tube.

The buffer is slightly buffered when the battery string is contacted, so that the hollow pipe is prevented from directly pressing on the battery string to damage the battery string.

Optionally, a spring which applies elasticity to the pressing block to enable the pressing block to be pressed on the battery piece and the welding strip is arranged between the hollow tube and the pressing block;

and a smaller elastic force is applied to the pressing block, so that the junction of the battery strings can be compressed, and the welding effect is improved.

The tip that is connected with the briquetting of hollow tube is provided with first snap ring and second snap ring along axial interval, and the one end of spring is connected in first snap ring in order to prevent that the spring from breaking away from the hollow tube, and the other end is connected in the briquetting, and the second snap ring sets up to breaking away from the hollow tube when spacing in order to prevent the relative hollow tube of briquetting from removing to the briquetting.

Easy to install and low in cost.

Optionally, the pressing pins are provided in a plurality, the pressing pins are arranged in rows, and each row of pressing pins is arranged to correspond to one group of welding strips to be pressed.

The number of the pressing pins can be customized according to the needs of customers, and the number of the pressing pins in one row is consistent with the number of welding strips of the battery strings required to be welded, and the pressing pins correspond to the welding strips in one to one.

According to another aspect of the utility model, still provide a welding set, welding set includes the installation main part, installs the heating fluorescent tube in the installation main part and installs the hold-down mechanism as above in the installation main part.

Further improve welding effect, prevent that juncture from welding the area and melting and dripping and produce the defective products.

Optionally, a heat insulation plate is arranged between the pressing pin of the pressing mechanism and the heating lamp tube.

The high temperature of the heating lamp tube is prevented from generating adverse effects on the press pin, such as deformation of the press pin and the like.

Optionally, the mounting body is provided with a strip-shaped lamp tube mounting block, and the heating lamp tube is mounted on the lamp tube mounting block;

the modular design is convenient for the installation and the disassembly of the lamp tube.

The inside of the lamp tube mounting block is provided with an air blowing channel and an air blowing hole which is communicated with the air blowing channel and used for blowing air towards the heating lamp tube.

The installation block blows air to the lamp tube, so that the effect of rapid cooling can be achieved, and the temperature can be conveniently adjusted.

Optionally, an arc-shaped groove with an arc-shaped cross section is formed on one side of the lamp tube mounting block facing the heating lamp tube, and the air blowing hole is formed in the bottom of the arc-shaped groove.

The arc-shaped groove is attached to the shape of the lamp tube, and the design of the arc-shaped groove can also restrict the airflow blown out from the air blowing holes and concentrate the airflow on the lamp tube.

Optionally, the welding device further comprises a temperature sensor for detecting the temperature of the heating lamp tube.

A temperature sensor is arranged, so that the welding temperature can be monitored in real time conveniently, and the temperature can be adjusted in time as required.

Optionally, a fan is further installed on the installation body, and the fan is located above the heating lamp tube and blows air towards the heating lamp tube.

The fan arranged above the lamp tube can blow hot air around the heating lamp tube to the battery strings below, so that the welding effect is improved.

Through the technical scheme provided by the utility model, welding set carries out the in-process that adds heat welding to the battery piece of stacking and solder strip, can compress tightly the position that stacks at battery piece and solder strip through the tucking, realize the location of battery piece and solder strip, can also blow to the position that compresses tightly through excessive pressure simultaneously and cool off to prevent that the position that stacks of battery piece and solder strip from melting the drippage because the high solder strip of temperature when the welding, thereby solved among the prior art solder strip and melted and expose the copper core and cause contact failure's problem.

Drawings

Fig. 1 is a schematic view of a pressing mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a pressing pin in the pressing mechanism shown in FIG. 1;

FIG. 3 is a cross-sectional view of the tucking blade shown in FIG. 2;

fig. 4 is a schematic structural view of a welding apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic view of the welding apparatus shown in FIG. 4, viewed from above;

FIG. 6 is a schematic view of a heating assembly;

FIG. 7 is a side view of a lamp mounting block in the heating assembly;

FIG. 8 is a bottom view of the tube mounting block shown in FIG. 7;

fig. 9 is a schematic structural view of the lamp mounting block shown in fig. 7, as seen from one end.

Description of the reference numerals

1-mounting a main body; 2-a heating assembly; 21-heating lamp tube; 22-lamp tube mounting block; 221-an arc-shaped groove; 222-air blowing holes; 23-lamp tube clip; 24-a vent line; 3-a pressing mechanism; 31-pressing the needle; 311-hollow tube; 312-briquetting; 313-a spring; 314-a first snap ring; 315-a second snap ring; 32-pressing pin mounting bar; 4-heat insulation plate; 5-connecting a bracket; 6-a fan; 7-a temperature sensor; 8-positive electrode line; 9-negative pole line.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and the like. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may also be otherwise oriented, such as by rotation through 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

The utility model provides a hold-down mechanism 3, hold-down mechanism 3 be used for setting up on welding set with welding set compresses tightly when heating the welding to the battery piece that stacks and solder strip the position that stacks of battery piece and solder strip, as shown in figure 1, this hold-down mechanism 3 includes at least one tucking finger 31, every be provided with the gas hole that can blow on the tucking finger 31 with the tucking finger 31 compresses tightly can blow towards compressing tightly the position when taking battery piece and solder strip.

The utility model provides a technical scheme, adopt welding set to carry out the in-process of heating welding to the battery piece that stacks and solder strip, can compress tightly the position that stacks at battery piece and solder strip through tucking 31, realize the location of battery piece and solder strip, can also blow through tucking 31 to the position that compresses tightly simultaneously and cool off to prevent that the position that stacks of battery piece and solder strip from melting the drippage because the high solder strip of temperature when the welding, thereby solved among the prior art solder strip and melted and expose the copper core and cause contact failure's problem.

In a preferred embodiment of the present invention, in order to enable the pressing pin 31 to blow air, as shown in fig. 2 and 3, each of the pressing pins 31 includes a hollow tube 311 for introducing air and a pressing block 312 for pressing on the battery piece and the solder strip, the pressing block 312 is elastically connected to one end of the hollow tube 311 facing to the portion to be pressed, and the air blowing hole is disposed on the pressing block 312 and communicated with the hollow tube 311.

Specifically, the pressing block 312 is a cylindrical member, the central hole of the cylindrical member forms the air blowing hole, the end of the hollow tube 311 is inserted into the cylindrical member, and the air introduced into the hollow tube 311 can be blown out from the central hole of the pressing block 312.

It will be understood by those skilled in the art that the manner of enabling the air blowing from the presser pin 31 is not limited to the arrangement manner described above, and for example, a plurality of air blowing holes communicating with the hollow tube 311 may be further provided in the circumferential direction of the presser block 312; alternatively, the hollow tube 311 is provided with a plurality of blow holes through which air can be blown downward.

In order to enable the pressing block 312 to be elastically pressed on the battery piece and the welding strip and avoid damage to the battery piece, a spring 313 which applies elasticity to the pressing block 312 so that the pressing block 312 is pressed on the battery piece and the welding strip is arranged between the hollow tube 311 and the pressing block 312.

Further, the end portion of the hollow tube 311, which is connected with the pressing block 312, is provided with a first snap ring 314 and a second snap ring 315 at intervals along the axial direction, one end of the spring 313 is connected to the first snap ring 314 to prevent the spring 313 from separating from the hollow tube 311, the other end of the spring 313 is connected to the pressing block 312, and the second snap ring 315 is configured to limit the pressing block 312 to prevent the pressing block 312 from separating from the hollow tube 311 when moving relative to the hollow tube 311.

In this embodiment, the plurality of pressing pins 31 are provided, the plurality of pressing pins 31 are arranged in rows, each row of pressing pins 31 is arranged to correspond to a group of solder strips to be pressed one by one, that is, each pressing pin 31 in a row of pressing pins 31 is correspondingly pressed on a junction of a battery piece and a solder strip.

The embodiment shown in fig. 1 shows that the hold-down mechanism 3 is provided with a row of presser pins 31, which row of presser pins 31 is mounted on a presser pin mounting bar 32. It is to be understood that the present invention provides that the hold-down mechanism 3 is not limited to one row of the pressing pins 31, and two or more rows may be provided.

In application, the pressing mechanism 3 is installed on a welding device, and when the welding device performs heating welding on stacked battery plates and welding strips, each row of pressing pins 31 can be correspondingly pressed on a group of welding strips, namely, each pressing pin 31 in a row of pressing pins respectively correspondingly presses one welding strip.

According to another aspect of the present invention, there is also provided a welding device, and fig. 4 and 5 show a welding device according to an embodiment of the present invention, which comprises an installation body 1, a heating lamp 21 installed on the installation body 1, and a pressing mechanism 3 installed on the installation body 1 as described above.

The utility model provides a welding set can be used for treating welded battery piece and weld the area and add the heat welding to form the battery cluster. In the welding process, the pressing pin 31 of the pressing mechanism 3 can be used for positioning the battery piece to be welded and the welding strip, and meanwhile, the pressing pin 31 is used for blowing and cooling the welding part, so that the problem that the produced battery string is bad due to the fact that the welding strip is too high in temperature during welding can be avoided.

In this embodiment, the mounting body 1 is mounted with a strip-shaped lamp mounting block 22, and the heating lamp 21 is mounted on the lamp mounting block 22. Fig. 6 shows the heating module 2 in which the heating lamp 21 is mounted on the lamp mounting block 22, and fig. 7 to 9 show a specific structure of the lamp mounting block 22. To facilitate the connection of the heating lamp 21, lamp holders 23 are respectively provided at opposite ends of the lamp mounting block 22, and both ends of the heating lamp 21 can be respectively clamped on the lamp holders 23. Fig. 5 shows the positive electrode line 8 and the negative electrode line 9 connected to the heating lamp 21 for supplying power to the heating lamp 21.

Preferably, an air blowing channel and an air blowing hole 222 communicated with the air blowing channel and used for blowing air towards the heating lamp 21 are arranged inside the lamp mounting block 22. Fig. 6 shows the ventilation pipes 24 ventilating the air blowing passage inside the lamp tube mounting block 22, and it is preferable to provide the ventilation pipes 24 at opposite ends of the lamp tube mounting block 22, respectively, so that the air can be uniformly blown toward the heating lamp tube 21.

The air blowing holes 222 arranged on the lamp tube mounting block 22 blow air downwards, so that the phenomenon that the temperature is too high due to heat conducted by the heating lamp tube 21 to the lamp tube mounting block 22 and other parts can be avoided, and hot air for heating the lamp tube 21 can be blown to the part to be welded.

More preferably, an arc-shaped groove 221 with an arc-shaped cross section is formed on one side of the lamp mounting block 22 facing the heating lamp 21, and the air blowing hole 222 is disposed at the bottom of the arc-shaped groove 221. The arc-shaped slots 221 are shaped to direct the hot gas downwardly.

In the present embodiment, as shown in fig. 4, a heat insulation board 4 is disposed between the pressing pin 31 and the heating lamp 21 of the pressing mechanism 3 to prevent the heating lamp 21 from heating the pressing pin 31 to a high temperature to affect the performance of the pressing pin 31.

Specifically, as shown in fig. 4, three rows of pressing pins 31 are provided in the present embodiment, the heating lamps 21 are respectively provided between two adjacent rows of pressing pins 31, and the arrangement direction of the pressing pins 31 coincides with the extending direction of the heating lamps 21. Wherein, the two sides of the middle row of pressing pins 31 are respectively provided with a heat insulation board 4 for heat insulation with the heating lamp 21 at the two sides, and the heat insulation board 4 is arranged between the two rows of pressing pins 31 at the outermost side and the heating lamp 21 at the inner side.

Of course, other arrangements of the pressing pins 31 and the heating lamps 21 are possible, for example, two rows of pressing pins 31 are provided, and the heating lamps 21 may be respectively provided between the two rows of pressing pins 31 and outside the two rows of pressing pins 31. Other rows of pins 31 may be provided, and the arrangement of the heating lamps 21 may be changed accordingly.

In the present embodiment, in order to obtain the temperature information of the heating lamp 21 and thus facilitate the control of the heating power of the heating lamp, the welding device further includes a temperature sensor 7 for detecting the temperature of the heating lamp 21, as shown in fig. 5.

The welding device further comprises fans 6 which are arranged on the installation body 1, are positioned above the heating lamp tubes 21 and blow air towards the heating lamp tubes 21, and as shown in fig. 5, four fans 6 are arranged in the embodiment. Blowing gas by the fan 6 can avoid the heating lamp 21 from heating the main structure of the welding device to a too high temperature.

In addition, this welding set still includes installing linking bridge 5 on installation subject 1, and this linking bridge 5 can be connected this welding set on elevating system to it goes up and down to suitable height by elevating system drive this welding set and welds.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. The pressing mechanism is arranged on a welding device and used for pressing stacked positions of stacked battery plates and welding strips when the welding device performs heating welding on the stacked battery plates and the welding strips, and is characterized by comprising at least one pressing needle, wherein each pressing needle is provided with a blowing hole capable of blowing air so as to blow air towards the pressed positions when the pressing needle presses the stacked battery plates and the welding strips.

2. The pressing mechanism as claimed in claim 1, wherein each pressing pin comprises a hollow tube for introducing gas and a pressing block for pressing the battery piece and the solder strip, the pressing block is elastically connected to one end of the hollow tube facing to the part to be pressed, and the blowing hole is formed in the pressing block and communicated with the hollow tube.

3. The pressing mechanism as claimed in claim 2, wherein a spring is arranged between the hollow tube and the pressing block for applying elastic force to the pressing block to press the pressing block on the battery piece and the welding strip;

the hollow tube be connected with the tip of briquetting is provided with first snap ring and second snap ring along axial interval, the one end of spring connect in first snap ring is in order to prevent the spring breaks away from the hollow tube, the other end connect in the briquetting, the second snap ring sets up to right the briquetting is spacing in order to prevent the briquetting is relative break away from when the hollow tube removed the hollow tube.

4. The pressing mechanism according to any one of claims 1 to 3, wherein a plurality of pressing pins are provided, the plurality of pressing pins are arranged in rows, and each row of pressing pins is arranged in one-to-one correspondence with a group of solder strips to be pressed.

5. A welding device, characterized in that the welding device comprises a mounting body, a heating lamp tube mounted on the mounting body, and a pressing mechanism according to any one of claims 1-4 mounted on the mounting body.

6. The welding device according to claim 5, wherein a heat insulation plate is arranged between the pressing pin of the pressing mechanism and the heating lamp tube.

7. The welding device according to claim 5 or 6, wherein the mounting body is provided with an elongated lamp mounting block, and the heating lamp is mounted on the lamp mounting block;

8. The welding device according to claim 7, wherein a side of the lamp mounting block facing the heating lamp forms an arc-shaped groove with an arc-shaped cross section, and the air blowing hole is formed in the bottom of the arc-shaped groove.

9. Welding device according to claim 5 or 6, further comprising a temperature sensor for detecting the temperature of the heating lamp.

10. The welding device according to claim 5 or 6, wherein a fan is further installed on the installation body above the heating lamp and blowing air toward the heating lamp.