Welding device and series welding machine

Abstract

The utility model discloses a welding device and a series welding machine, and the welding device comprises a welding box mechanism which is arranged above a welding conveying device; the heating air box mechanism comprises an air box main body which is fixedly arranged on the welding box mechanism; the plurality of heating fan assemblies are respectively arranged on the air bellow main body and are used for heating external air and blowing the external air into the air bellow main body; the heating pipe and the second thermocouple are fixedly arranged in the air bellow main body, the heating pipe reheats the hot air blown in by the plurality of heating fan assemblies, and the second thermocouple monitors the temperature in the air bellow main body in real time. According to the welding device, hot air heated by the heating fan assemblies and the heating pipes is continuously and uniformly blown into the welding box mechanism through the heating fan assemblies, so that the hot air is always in a state of flowing from top to bottom, and the problem that the temperature uniformity and stability in an existing welding device are poor is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of string welding machines, and more particularly to a welding device and a string welding machine. Background Art

[0002] The function of a string welding machine is to form a battery string by connecting solar cells in series, which is a core and important process in the production of photovoltaic modules. The welding device is an important device for welding solar cells to solder tapes and is one of the core components of the string welding machine. The temperature uniformity and stability of the welding device directly determine the welding quality of the solar cells and solder tapes, and thus the quality of the battery string after welding. During the welding process of solar cells, the long-term operation of the welding device will cause the temperature in the welding area to gradually rise, posing certain difficulties and challenges to temperature control and the stability of the temperature zone. If the temperature is not uniform and stable, problems such as unstable welding and false soldering may occur, resulting in material waste and increased costs, and also affecting the quality of subsequent photovoltaic modules.

[0003] In the prior art, due to the long-term heating of the welding device, the temperature in the internal area of the device will continue to rise. At this time, it is necessary to control the heat dissipation of the temperature in the welding device. Generally, methods such as air ducts and fans are used for heat dissipation to maintain the stability of the welding temperature zone. Although heat dissipation methods such as air ducts and fans can make the gas in the temperature chamber flow and reduce the temperature, the blown-in air combines with the internal high-temperature gas, and the temperature difference between the blown-in air and the internal high-temperature gas is relatively large, resulting in relatively large temperature fluctuations. Since the airflow of the blown-in air is concentrated, its temperature is difficult to control, causing heat loss and affecting the temperature uniformity and stability of the welding temperature. At the same time, if the layout of the heat dissipation fans is unreasonable, heat dissipation blind spots will be formed, which may cause the temperature in local areas to rise, resulting in uneven temperature; therefore, a welding device and a string welding machine are provided to solve the above problems. Summary of the Utility Model

[0004] One of the purposes of the present utility model is to provide a welding device and a string welding machine to facilitate solving the problem of poor temperature uniformity and stability in the existing welding device.

[0005] A welding device and a string welding machine of the present utility model can be achieved by the following technical solutions:

[0006] The welding device of the present utility model includes a welding box mechanism, which is arranged above the welding conveyor device; a heating air box mechanism, which includes an air box main body, which is fixedly arranged on the welding box mechanism; a plurality of heating fan assemblies respectively arranged on the air box main body, which heat the outside air and blow it into the air box main body; a heating tube and a second thermocouple respectively and fixedly arranged in the air box main body, the heating tube reheats the hot air blown by the plurality of heating fan assemblies, and the second thermocouple monitors the temperature in the air box main body in real time.

[0007] In one implementation, the heating fan assembly includes a diversion cavity, which is a hollow cavity, and a plurality of convection holes are respectively arranged through the two opposite sides of the diversion cavity; a heating fan fixedly arranged on the diversion cavity; a protection plate fixedly arranged on the heating fan.

[0008] In one implementation, the diversion cavity includes a diversion cavity main body, which is a hollow cavity, and a plurality of the convection holes are respectively arranged through the bottom of the diversion cavity; an upper diversion plate fixedly arranged on the diversion cavity main body, and a plurality of the convection holes respectively penetrate through the upper diversion plate, and the heating fan is fixedly arranged on the upper diversion plate.

[0009] In one implementation, the welding box mechanism includes a support assembly; two adjusting plates respectively and movably arranged below the support assembly, and their positions can be adjusted relative to the support assembly; a diversion plate fixedly arranged above the support assembly; an infrared welding lamp assembly and a first thermocouple respectively and fixedly arranged in the support assembly.

[0010] In one implementation, the support assembly includes a plurality of support plates, and the plurality of support plates are sequentially enclosed to form a hollow cavity; a plurality of first through holes are respectively arranged on two relatively arranged support plates.

[0011] In one implementation, a fixing plate is fixedly arranged on the side of the support assembly.

[0012] In one implementation, a plurality of adjusting holes are arranged through the adjusting plate; a plurality of second through holes are uniformly arranged through the diversion plate.

[0013] In one implementation, the heating tube is a finned heating tube.

[0014] In one implementation, a plurality of third through holes are arranged through one end of the air box main body far from the welding box mechanism, and the plurality of heating fan assemblies are respectively arranged on the corresponding third through holes.

[0015] The string welding machine of the present utility model includes the welding device described in any one of the above.

[0016] It further includes a solar cell conveying device, a solder tape feeding device, a fixture conveying device, a solar cell fixture handling device, a solder tape laying device, a welding conveying device, a fixture handling device and a stringing-out device;

[0017] Among them, the solar cell conveying device conveys the solar cells required for solar cell string welding; the solder tape feeding device places the solder tape roll to provide the solder tape required for solar cell string welding; the solar cell fixture handling device transports the solar cells at the output end of the solar cell conveying device and the fixtures at the output end of the fixture conveying device to the input end of the welding conveying device; the solder tape laying device lays the solder tape on the solar cells on the welding conveying device; the welding conveying device transports the solar cells, the solder tape and the fixtures pressing on the solder tape together and passes through the welding device; the welding device is arranged between the input end and the output end of the welding conveying device, and welds the solar cells and the solder tape on the welding conveying device; the fixture handling device transports the fixtures from the output end of the welding conveying device to the input end of the fixture conveying device; the fixture conveying device transports the recycled fixtures from the input end of the fixture conveying device to its output end; the stringing-out device performs string separation processing on the solar cell string obtained by welding of the welding device and outputs a solar cell string of a predetermined length.

[0018] Compared with the prior art, the beneficial effects of a welding device and a string welding machine of the present utility model are as follows:

[0019] With a welding device and a string welding machine of the present utility model, multiple heating fan assemblies simultaneously and continuously blow hot air, which has been heated by them and a heating tube, into the welding box mechanism evenly. At the same time, continuous heating is carried out by an infrared welding lamp assembly, so that the hot air is always in a state of flowing from top to bottom, effectively solving the problem of poor temperature uniformity and stability in the existing welding device; the heating fan assemblies and the heating tube are used to heat the incoming air, thereby effectively reducing the temperature difference with the hot air inside the welding box mechanism; at the same time, the air blown by the heating fan passes through a three-layer diversion mechanism with air holes, so that the wind speed remains stable and consistent in the welding area. The heating fan has a self-heating function, and the gas inside the air box body is heated in cooperation with the heating tube, so that the temperature of the hot air in the air box body is basically the same as the temperature required in the welding area, reducing the temperature fluctuation generated when the upper and lower layers of gas flow. At the same time, the temperatures inside the air box body and the welding area are monitored in real time by thermocouples respectively, further making the temperature in the welding area maintain uniformity and stability. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic three-dimensional structure diagram of a welding device of the present utility model, including a welding box mechanism and a heating air box mechanism;

[0022] Figure 2 is Figure 1 an exploded structure diagram of the welding box mechanism in a welding device of the present utility model as shown;

[0023] Figure 3 is Figure 1 an exploded structure diagram of the heating air box mechanism in a welding device of the present utility model as shown, including a heating fan assembly;

[0024] Figure 4 is Figure 3 an exploded structure diagram of the heating fan assembly as shown.

[0025] In the figure, the markings are as follows: 10, welding device; 11, welding box mechanism; 111, support assembly; 1111, support plate; 11111, first through hole; 1112, fixing plate; 112, adjusting plate; 1121, adjusting hole; 113, flow guiding plate; 1131, second through hole; 114, infrared welding lamp assembly; 115, first thermocouple; 12, heating air box mechanism; 121, air box body; 1211, third through hole; 1212, fixing hole; 122, heating fan assembly; 1221, flow guiding cavity; 12211, flow guiding cavity body; 12212, upper flow guiding plate; 1222, heating fan; 1223, protection plate; 123, heating tube; 124, second thermocouple. Specific embodiments

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Accordingly, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0028] Please refer to Figures 1-4 As shown, a welding device 10 of the present invention mainly includes a welding box mechanism 11 and a heating air box mechanism 12; the welding box mechanism 11 is disposed above the welding conveyor device, and performs infrared welding operations on the battery cells and solder tapes passing below it; the heating air box mechanism 12 is fixedly disposed above the welding box mechanism 11, and blows hot air evenly from top to bottom into the welding box mechanism 11, thereby ensuring the uniformity and stability of the temperature inside the welding box mechanism 11.

[0029] Please refer to Figure 1 and Figure 2 As shown, in this embodiment, the welding box mechanism 11 includes a support assembly 111, two adjustment plates 112, a flow guide plate 113, an infrared welding lamp assembly 114, and a first thermocouple 115; the support assembly 111 is the support main body; the two adjustment plates 112 are respectively movably disposed below the support assembly 111, and their positions can be adjusted relative to the support assembly 111; the flow guide plate 113 is fixedly disposed above the support assembly 111, and the hot air blown out by the heating air box mechanism 12 enters the support assembly 111 through the flow guide plate 113; the infrared welding lamp assembly 114 and the first thermocouple 115 are respectively fixedly disposed in the support assembly 111, the infrared welding lamp assembly 114 performs infrared welding operations on the battery cells and solder tapes passing below it, and the first thermocouple 115 performs real-time monitoring operations on the temperature inside the support assembly 111.

[0030] Please refer to Figure 2As shown, in this embodiment, the support assembly 111 includes a plurality of support plates 1111, and the plurality of support plates 1111 enclose a hollow cavity in sequence. The infrared soldering lamp assembly 114 is fixedly arranged in this hollow cavity. Specifically, a plurality of first through holes 11111 are respectively arranged on two relatively arranged support plates 1111, and the air outside and the air inside the support assembly 111 perform convection through the plurality of first through holes 11111. A fixing plate 1112 is fixedly arranged on the side of one of the support plates 1111, and the welding device 10 is fixed above the welding conveying device through the fixing plate 1112. Specifically, a plurality of adjustment holes 1121 are penetrated through the adjustment plate 112, and the position of the adjustment plate 112 relative to the support assembly 111 is adjusted through the plurality of adjustment holes 1121. A plurality of second through holes 1131 are uniformly penetrated through the diversion plate 113, and the hot air blown out by the heating air box mechanism 12 enters the support assembly 111 through the plurality of second through holes 1131.

[0031] Please refer to Figure 1 and Figure 3 As shown, in this embodiment, the heating air box mechanism 12 includes an air box main body 121, a plurality of heating fan assemblies 122, a heating tube 123, and a second thermocouple 124. The air box main body 121 is a hollow cavity, and it is fixedly arranged on the diversion plate 113. The plurality of heating fan assemblies 122 are respectively arranged on the air box main body 121, and they heat the outside air and blow it into the air box main body 121. The heating tube 123 and the second thermocouple 124 are respectively fixedly arranged in the air box main body 121. The heating tube 123 reheats the hot air blown in by the plurality of heating fan assemblies 122, so as to further reduce the temperature difference with the hot air inside the welding box mechanism 11. The second thermocouple 124 performs real-time monitoring of the temperature inside the air box main body 121. Specifically, the heating tube 123 used is a finned heating tube.

[0032] Please refer to Figure 3 As shown, specifically, a plurality of third through holes 1211 are penetrated through one end of the air box main body 121 far away from the welding box mechanism 11. The plurality of heating fan assemblies 122 are respectively arranged on the corresponding third through holes 1211, and the hot air blown out by the plurality of heating fan assemblies 122 enters the air box main body 121 and the welding box mechanism 11 in sequence through the third through holes 1211. A plurality of fixing holes 1212 are also penetrated through the air box main body 121, and the air box main body 121 is fixedly arranged on the welding box mechanism 11 through the plurality of fixing holes 1212.

[0033] Please refer to Figure 3 and Figure 4As shown, in this embodiment, the heating fan assembly 122 includes a diversion cavity 1221, a heating fan 1222, and a protective plate 1223. The diversion cavity 1221 is a hollow cavity, which is fixedly arranged on the third through hole 1211, and a plurality of convection holes are respectively arranged through the opposite two sides thereof. The heating fan 1222 is fixedly arranged on the diversion cavity 1221, and the hot air blown out by it successively passes through the diversion cavity 1221 and the bellows main body 121 and enters the welding box mechanism 11. The protective plate 1223 is fixedly arranged on the heating fan 1222 to prevent foreign objects from entering the heating fan 1222. Specifically, the diversion cavity 1221 includes a diversion cavity main body 12211 and an upper diversion plate 12212. The diversion cavity main body 12211 is a hollow cavity, and a plurality of convection holes are respectively arranged through its bottom. The upper diversion plate 12212 is fixedly arranged on the diversion cavity main body 12211, and a plurality of convection holes respectively penetrate the upper diversion plate 12212. The heating fan 1222 is fixedly arranged on the upper diversion plate 12212.

[0034] A string welding machine of the present utility model includes the welding device 10 of any one of the above.

[0035] It further includes a battery cell conveying device, a solder tape feeding device, a fixture conveying device, a battery cell fixture handling device, a solder tape laying device, a welding conveying device, a fixture handling device, and a string discharging device.

[0036] Among them, the battery cell conveying device conveys the battery cells required for battery string welding. The solder tape feeding device places a solder tape roll to provide the solder tape required for battery string welding. The battery cell fixture handling device transports the battery cells at the output end of the battery cell conveying device and the fixtures at the output end of the fixture conveying device to the input end of the welding conveying device. The solder tape laying device lays the solder tape on the battery cells on the welding conveying device. The welding conveying device transports the battery cells, the solder tape, and the fixtures pressing on the solder tape together and passes through the welding device 10. The welding device 10 is arranged between the input end and the output end of the welding conveying device, and welds the battery cells and the solder tape on the welding conveying device. The fixture handling device transports the fixtures from the output end of the welding conveying device to the input end of the fixture conveying device. The fixture conveying device transports the returned fixtures from the input end of the fixture conveying device to its output end. The string discharging device performs string separation processing on the battery strings obtained by welding of the welding device and outputs battery strings of a predetermined length.

[0037] It should be noted that the specific working process of the welding device and the string welding machine of the utility model is as follows: by arranging a heating bellows mechanism 12 above the welding box mechanism 11, a plurality of heating fan assemblies 122 blow the hot air heated by themselves and the heating tube 123 into the welding box mechanism 11, and the heated airflow enters the cavity surrounded by the support assembly 111 through the fine ventilation holes on the guide plate 113, and is continuously heated by the infrared welding lamp assembly 114 arranged therein. Since the hot air blown by the plurality of heating fan assemblies 122 is continuously and evenly blown downward, the heated gas is always in a state of flowing from top to bottom, and the uneven temperature and instability are avoided as much as possible. At the same time, by arranging the first thermocouple 115 and the second thermocouple 124, the temperature of the welding area in the heating bellows mechanism 12 and the welding box mechanism 11 can be monitored and fed back in real time, and the temperature inside the two can be adjusted in real time, thereby ensuring the uniformity and stability of the welding temperature.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A welding device, characterized in that: include: A welding box mechanism, which is arranged above the welding conveyor; The heating bellows mechanism comprises a bellows main body, which is fixedly arranged on the welding box mechanism; a plurality of heating fan assemblies respectively arranged on the bellows main body, which heat the outside air and blow it into the bellows main body; a heating pipe and a second thermocouple respectively fixedly arranged in the bellows main body, the heating pipe reheats the hot air blown in by the plurality of heating fan assemblies, and the second thermocouple monitors the temperature in the bellows main body in real time.

2. A welding device according to claim 1, characterized in that: The heating fan assembly comprises a guide cavity which is a hollow cavity, and a plurality of convection holes are respectively provided on two opposite sides of the guide cavity; a heating fan fixedly arranged on the guide cavity; and a protective plate fixedly arranged on the heating fan.

3. A welding device according to claim 2, characterized in that: The guide cavity includes a guide cavity body, which is a hollow cavity, and a plurality of convection holes are respectively arranged through the bottom of the guide cavity; an upper guide plate is fixedly arranged on the guide cavity body, and a plurality of convection holes are respectively arranged through the upper guide plate, and the heating fan is fixedly arranged on the upper guide plate.

4. A welding device according to claim 1, characterized in that: The welding box mechanism comprises a support assembly; two adjustment plates respectively movably arranged below the support assembly, and the positions of the two adjustment plates can be adjusted relative to the support assembly; and a guide plate fixedly arranged above the support assembly; The infrared welding lamp assembly and the first thermocouple are respectively fixedly arranged in the supporting assembly.

5. A welding device according to claim 4, characterized in that: The support assembly includes a plurality of support plates, which sequentially surround a hollow cavity; and a plurality of first through holes are respectively provided on two support plates arranged opposite to each other.

6. A welding device according to claim 5, characterized in that: A fixing plate is fixedly arranged on the side of the supporting assembly.

7. A welding device according to claim 4, characterized in that: The adjusting plate is provided with a plurality of adjusting holes; and the guide plate is provided with a plurality of second through holes evenly arranged thereon.

8. A welding device according to claim 1, characterized in that: The heating tube is a fin-type heating tube.

9. A welding device according to claim 1, characterized in that: A plurality of third through holes are formed through one end of the bellows body away from the welding box mechanism, and a plurality of the heating fan assemblies are respectively arranged on the corresponding third through holes.

10. A string welding machine, characterized in that: A welding device comprising any one of claims 1 to 9; It also includes a cell conveying device, a solder strip feeding device, a jig conveying device, a cell jig handling device, a solder strip laying device, a welding conveying device, a jig handling device and a string discharging device; Among them, the battery cell conveying device conveys the battery cells required for battery string welding; the welding tape feeding device places the welding tape roll to provide the welding tape required for battery string welding; the battery cell jig transporting device transports the battery cells at the output end of the battery cell conveying device and the jig at the output end of the jig conveying device to the input end of the welding conveying device; the welding tape laying device lays the welding tape on the battery cells on the welding conveying device; the welding conveying device transports the battery cells, welding tape and the jig pressed on the welding tape together and passes through the welding device; the welding device is arranged between the input end and the output end of the welding conveying device, and it welds the battery cells and welding tape on the welding conveying device; the jig transporting device transports the jig from the output end of the welding conveying device to the input end of the jig conveying device; the jig conveying device transports the reflowed jig from the input end of the jig conveying device to its output end; the string output device performs string processing on the battery strings obtained by welding by the welding device, and outputs battery strings of predetermined lengths.

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