Solder strip drying device

Abstract

The utility model provides a welding strip drying device which comprises a heating base, a cover plate and a heating piece, and the heating piece is arranged in the heating base and used for heating the heating base; an air inlet flow channel and an air collecting cavity located above the air inlet flow channel are formed in the heating base, the air inlet flow channel is provided with at least one air inlet connected with an external compressed air source and at least one air outlet communicated with the air collecting cavity, a heating groove is formed in the first surface of the heating base, and air blowing holes communicated with the air collecting cavity are formed in the groove bottom of the heating groove; the cover plate is installed on the heating base and covers a groove port of the heating groove, and a space allowing a to-be-heated welding strip set to penetrate through is formed between the cover plate and the groove bottom of the heating groove. Air flow provided by the compressed air source flows into the air collecting cavity from the air inlet channel and then is blown into the heating groove through the air blowing holes so as to dry the welding strip set in the heating groove. According to the solder strip drying device provided by the invention, the solder strip group coated with the soldering flux can be dried, so that the soldering flux is solidified to the surface of the solder strip.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic production equipment, in particular to a welding strip drying device. BACKGROUND

[0002] Before the welding strip group is stacked with the battery piece to form a string, the welding strip group is usually coated with flux, and the flux has the advantages of being able to remove the oxides on the surface of the welding strip, preventing pores and cracks from being generated at the welding position of the welding strip group and the battery piece, and the like, so as to ensure the welding effect of the welding strip group and the battery piece.

[0003] After the welding strip is coated with the flux, the flux on the surface of the welding strip is relatively wet, and the flux on the welding strip is easy to contaminate the adjacent mechanism in the advancing process, and the flux on the surface of the welding strip is easy to be scratched off by the mechanism contacted in the advancing process due to the wetness, thereby affecting the welding effect. CONTENT OF THE UTILITY MODEL

[0004] In view of the above technical problems, the present application provides a welding strip drying device, and the detailed technical scheme is as follows:

[0005] A welding strip drying device, comprising a heating seat, a cover plate and a heating piece, wherein:

[0006] The heating piece is arranged in the heating seat, and the heating piece is used for heating the heating seat;

[0007] The heating seat is provided with an air inlet channel and a gas collection cavity located above the air inlet channel, the air inlet channel has at least one air inlet connected with an external compressed gas source and at least one air outlet communicated with the gas collection cavity, a first surface of the heating seat is formed with a heating groove, and a groove bottom of the heating groove is provided with a blowing hole communicated with the gas collection cavity;

[0008] The cover plate is installed on the heating seat and covers the groove port of the heating groove, and a space for the welding strip group to be heated to pass through is formed between the cover plate and the groove bottom of the heating groove;

[0009] The airflow provided by the compressed gas source flows from the air inlet channel into the gas collection cavity, and then blows into the heating groove through the blowing hole to dry the welding strip group in the heating groove.

[0010] The welding strip drying device provided by the present application can be arranged on the advancing path of the welding strip group, the welding strip group coated with the flux passes through the heating groove on the welding strip drying device in the advancing process, the welding strip drying device performs drying on the welding strip group, so that the flux is solidified to the surface of the welding strip, thereby preventing the flux from contaminating the mechanism contacted with the welding strip group, and the solidified flux is not easy to be scratched off.

[0011] In some embodiments, the groove bottom of the heating groove is provided with a plurality of rows of blowing holes, and the plurality of rows of blowing holes are arranged at intervals along the first direction.

[0012] Each solder ribbon in the solder ribbon assembly is aligned with one of the rows of air holes, which allows the flux on the surface of the solder ribbon to cure more quickly.

[0013] In some embodiments, the heating element includes at least one heating rod and at least one thermocouple passing through the heating base.

[0014] Thermocouples are used to monitor the temperature of the heating base in real time, and the heating rod selects to heat or pause the heating of the heating base based on the temperature value obtained by the thermocouple, thereby ensuring that the temperature of the heating base is kept within a suitable temperature range and that the flux can be cured onto the surface of the solder strip.

[0015] In some embodiments, the welding strip drying device further includes a connector disposed on the heating base and communicating with the air inlet of the air inlet channel, the connector being connected to a compressed air source via a pipe.

[0016] By setting a connector on the heating base that connects to the air inlet of the air intake channel, the connection between the welding strip drying device and the compressed air source is facilitated.

[0017] In some embodiments, the heating base includes a base plate, a heating plate, and a ventilation plate, wherein: a heating element is disposed inside the heating plate, an air inlet channel is disposed on a first surface of the heating plate, and an air collection chamber is disposed on a second surface of the heating plate; the base plate is disposed on a first side of the heating plate and covers the air inlet channel, and the ventilation plate is disposed on a second side of the heating plate and covers the air collection chamber; a heating groove is formed on the side of the ventilation plate opposite to the heating plate; and an air blowing hole is disposed on the ventilation plate.

[0018] The heating base is designed as a split structure consisting of a base plate, a heating plate, and a ventilation plate, which facilitates the processing and forming of internal slot structures such as the air intake channel, the air collection chamber, the heating groove, and the air blowing hole.

[0019] In some embodiments, a plurality of protruding strips are arranged side by side within the gas collecting cavity, dividing the gas collecting cavity into multiple gas collecting channels and a connecting air channel surrounding the outside of the multiple gas collecting channels. The multiple gas collecting channels are connected through the connecting air channel. The air inlet channel is a serpentine or S-shaped meandering channel. The air inlet channel has at least one air inlet extending to the side wall of the heating plate, and the air inlet channel has multiple air outlets extending into the connecting air channel. The projection of the blowing hole is located within the gas collecting channels and the connecting air channel.

[0020] By configuring the gas collecting chamber and the air intake channel, and ensuring that the projection of the air blowing hole is located within the gas collecting channel and the connecting channel, the uniformity of air blowing at each location can be improved, ultimately ensuring that each weld strip in the weld strip group can be dried.

[0021] In some embodiments, the air inlet channel is provided with multiple air outlets, and the diameter of the air outlets is inversely proportional to the airflow velocity at the location of the air outlet in the air inlet channel.

[0022] The greater the airflow velocity at the position of the air inlet channel where the air outlet is located, the smaller the caliber of the air outlet. In this way, the airflow volume of each air outlet can be ensured to be substantially the same, thereby improving the uniformity of the air pressure in the gas collection cavity, and ultimately improving the uniformity of the air blowing of the air blowing holes at different positions.

[0023] In some embodiments, the plurality of air outlets are distributed on at least two opposite sides of the communication channel.

[0024] The air path in the air inlet channel enters the communication channel from at least two opposite sides of the communication channel and is divided to the middle to each gas collection channel, which can further improve the uniformity of the air pressure in the gas collection cavity.

[0025] In some embodiments, the air inlet channel has at least two air inlets.

[0026] This can enable compressed gas to enter the air inlet channel from at least two different positions, thereby accelerating the air inlet speed, increasing the air inlet volume, and improving the uniformity of the airflow speed at different positions of the air inlet channel.

[0027] In some embodiments, the cover plate is provided with a first magnetic attraction member, and the heating seat is provided with a second magnetic attraction member matched with the first magnetic attraction member; the cover plate is attracted and combined on the heating seat through the first magnetic attraction member and the second magnetic attraction member.

[0028] The cover plate is magnetically attracted to the heating seat, which facilitates the disassembly and assembly of the cover plate under the premise of ensuring the covering force of the cover plate and the heating seat. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a structural schematic diagram of a solder strip drying device in an embodiment of the present application;

[0030] Figure 2 FIG. 2 is a structural schematic diagram of a solder strip drying device without a cover plate in an embodiment of the present application;

[0031] Figure 3 FIG. 3 is a structural schematic diagram of a first side surface of a heating plate in an embodiment of the present application;

[0032] Figure 4 FIG. 4 is a structural schematic diagram of a second side surface of a heating plate in an embodiment of the present application.

[0033] Figures 1 to 4 The present application comprises:

[0034] The heating seat 1 comprises a bottom plate 11, a heating plate 12, a ventilation plate 13, an air inlet channel 14, a gas collecting cavity 15, a heating groove 16, air blowing holes 17, convex strips 18, a gas collecting channel 19, a communication air channel 110, a first air inlet 141, a second air inlet 142, a first air outlet 143, a second air outlet 144, a third air outlet 145, a fourth air outlet 146, and a fifth air outlet 147.

[0035] The cover plate 2;

[0036] The heating member 3;

[0037] The air inlet connector 4;

[0038] The second magnetic attraction member 5. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0040] As described in the background section, after the soldering strip is coated with flux, the flux on the surface of the soldering strip is relatively wet, and the flux on the soldering strip is easy to contaminate the adjacent mechanism during the advancing process, and the flux on the surface of the soldering strip is easy to be scraped off by the mechanism contacted during the advancing process due to the wetness, which affects the welding effect.

[0041] In view of this, the present application provides a soldering strip drying device which heats the soldering strip coated with flux, so as to solidify the flux to the surface of the soldering strip.

[0042] As shown in the background section, Figures 1 to 4 The soldering strip drying device in the embodiment of the present application comprises a heating seat 1, a cover plate 2 and a heating member 3, wherein:

[0043] The heating member 3 is arranged in the heating seat 1, and the heating member 3 is used for heating the heating seat 1.

[0044] The air inlet channel 14 and the gas collecting cavity 15 located above the air inlet channel 14 are arranged in the heating seat 1, the air inlet channel 14 has at least one air inlet connected with an external compressed air source and at least one air outlet communicated with the gas collecting cavity 15, the first surface of the heating seat 1 is formed with the heating groove 16, and the groove bottom of the heating groove 16 is provided with the air blowing holes 17 communicated with the gas collecting cavity 15.

[0045] The cover plate 2 is installed on the heating seat 1 and covers the groove port of the heating groove 16, and the space for the soldering strip group 100 (only one soldering strip in the soldering strip group 100 is shown in the figure for simplicity) to pass through is formed between the cover plate 2 and the groove bottom of the heating groove 16.

[0046] The air flow provided by the compressed air source flows into the air collecting cavity 15 from the air inlet channel 14, and then blows into the heating groove 16 through the air blowing holes 17 to dry the solder tape group in the heating groove 16.

[0047] The solder tape drying device provided by the embodiment of the present application can be arranged on the running path of the solder tape group 100. The solder tape group 100 coated with flux passes through the heating groove 16 of the solder tape drying device in the advancing process. The air blowing holes 17 on the groove bottom of the heating groove 16 blow out the high-temperature gas after being heated to dry the solder tape group 100, so as to solidify the flux to the surface of the solder tape. Thus, the flux on the surface of the solder tape is prevented from polluting the mechanism in contact with the solder tape group 100, and the solidified flux is not easy to be scratched off.

[0048] As shown in Figure 2 The groove bottom of the heating groove 16 is provided with a plurality of rows of air blowing holes 17, and the plurality of rows of air blowing holes are arranged at intervals along the first direction (for example, the X direction).

[0049] In order to further ensure the drying effect, the number of rows of air blowing holes is at least equal to the number of solder tapes in the solder tape group 100. The solder tape group 100 to be heated passes through the heating groove 16 along the second direction (for example, the Y direction) perpendicular to the first direction. Each solder tape in the solder tape group 100 is aligned with one row of air blowing holes 17, for example, each solder tape in the solder tape group 100 is located directly above one row of air blowing holes 17.

[0050] In this way, each solder tape in the solder tape group 100 can be aligned with one row of air blowing holes 17 to blow air, so that the flux on the surface of the solder tape can be accelerated to solidify to the surface of the solder tape.

[0051] Optionally, the heating member 3 includes at least one heating rod and at least one thermocouple which are inserted into the heating seat 1. The thermocouple is used to monitor the temperature of the heating seat 1 in real time, and the heating rod heats or pauses heating the heating seat 1 according to the temperature value obtained by the thermocouple, so as to ensure that the temperature of the heating seat 1 is maintained within a suitable temperature range, and the gas blown out by the air blowing holes can solidify the flux to the surface of the solder tape.

[0052] As shown in Figures 1 to 2 Optionally, the solder tape drying device in the embodiment of the present application further includes a joint 4 arranged on the heating seat 1 and communicating with the air inlet of the air inlet channel 14. The joint 4 is connected with the compressed air source through a pipeline. By arranging the joint 4 on the heating seat 1 and communicating with the air inlet of the air inlet channel 14, the connection between the solder tape drying device and the compressed air source is facilitated.

[0053] As shown in Figures 2 to 4As shown, optionally, the heating base 1 includes a base plate 11, a heating plate 12 and a ventilation plate 13, wherein: the heating element 3 is disposed in the heating plate 12, the air inlet channel 14 is disposed on the first surface (e.g., the lower surface) of the heating plate 12, and the air collection cavity 15 is disposed on the second surface (e.g., the upper surface) of the heating plate 12.

[0054] The base plate 11 is located on the first side of the heating plate (as below) and covers the air intake channel 14, and the ventilation plate 13 is located on the second side of the heating plate 12 (as above) and covers the air collection chamber 15.

[0055] The heating groove 16 is formed on the side of the ventilation plate 13 facing away from the heating plate 12 (e.g., the upper side). The air blowing hole 17 is provided on the ventilation plate 13.

[0056] By setting the heating base 1 as a split structure composed of a base plate 11, a heating plate 12 and a ventilation plate 13, it is convenient to process and form the internal slot structure such as the air intake channel 14, the air collection chamber 15, the heating groove 16 and the air blowing hole 17.

[0057] Optional, such as Figure 3 As shown, multiple (e.g., 5 in the figure) protrusions 18 are arranged side by side in the gas collecting chamber 15. The multiple protrusions 18 divide the gas collecting chamber 15 into multiple (e.g., 6 in the figure) gas collecting channels 19 and connecting channels 110 surrounding the outside of the multiple gas collecting channels 19. The multiple gas collecting channels 19 are connected through the connecting channels 110. Figure 4 As shown, the air intake channel 14 is a serpentine or S-shaped channel that extends in a meandering manner.

[0058] The air intake duct 14 has at least one air inlet extending through to the side wall of the heating plate 12, for example... Figure 4 In this embodiment, the air intake duct 14 has two air inlets, namely a first air inlet 141 and a second air inlet 142. The air intake duct 14 also has multiple air outlets extending into the communicating air duct 110, for example... Figure 4 In this embodiment, the air inlet channel 14 has five air outlets, namely a first air outlet 143, a second air outlet 144, a third air outlet 145, a fourth air outlet 146, and a fifth air outlet 147. In addition, the projections of each row of air blowing holes 17 used for blowing air onto the welding strip group are located within the collecting air channel 19 and the connecting air channel 110.

[0059] Compressed gas supplied by the compressed air source enters the intake air passage 14 through each air inlet and flows along the intake air passage 14. Then it flows into the connecting air passage 110 through each air outlet in the intake air passage 14, and is then distributed to each collecting air passage 19 through the connecting air passage 110, and finally blown into the heating tank 16 through the blowing hole 17.

[0060] By setting the gas collecting cavity 15 and the gas inlet channel 14, and making the projection of each row of blowing holes 17 blowing gas on the welding strip group located in the gas collecting channel 19 and the communication channel 110, the uniformity of the airflow flow rate blown by the blowing holes 17 can be improved, and finally the drying of each welding strip in the welding strip group 100 is ensured.

[0061] Optionally, a plurality of gas outlets are formed on the gas inlet channel 14, and the caliber of the gas outlet is inversely proportional to the airflow velocity at the position of the gas outlet on the gas inlet channel. That is, the faster the airflow velocity at the position of the gas outlet on the gas inlet channel 14, the smaller the caliber of the gas outlet. In this way, the airflow flow rate of each gas outlet can be approximately the same, thereby improving the uniformity of the air pressure in the gas collecting cavity 15, and ultimately improving the uniformity of blowing of the blowing holes 17 at different positions.

[0062] For example Figure 4 In the embodiment shown, the compressed gas flows into the gas inlet channel 14 in two ways through the first gas inlet 141. Similarly, the compressed gas flows into the gas inlet channel 14 in two ways through the second gas inlet 142. The first gas outlet 143 is located at the intersection of one of the gas flows of the first gas inlet 141 and one of the gas flows of the second gas inlet 142. The second gas outlet 144 is located at the middle position of the other gas flow of the first gas inlet 141, and the third gas outlet 145 is located at the middle position of the other gas flow of the second gas inlet 142. The fourth gas outlet 146 is located at the end of the other gas flow of the first gas inlet 141, and the fifth gas outlet 147 is located at the end of the other gas flow of the second gas inlet 142.

[0063] Therefore, the airflow velocity at the first gas outlet 143 is the largest, the airflow velocity at the second gas outlet 144 and the third gas outlet 145 is the second largest, and the airflow velocity at the fourth gas outlet 146 and the fifth gas outlet 147 is the smallest. Correspondingly, the caliber of the first gas outlet 143 is the smallest, the caliber of the second gas outlet 144 and the third gas outlet 145 is the second smallest, and the caliber of the fourth gas outlet 146 and the fifth gas outlet 147 is the largest.

[0064] In this way, the gas flow rate of the first gas outlet 143, the second gas outlet 144, the third gas outlet 145, the fourth gas outlet 146 and the fifth gas outlet 147 blowing into the gas collecting cavity 15 can be approximately the same, thereby improving the uniformity of the air pressure in the gas collecting cavity 15, and ultimately improving the uniformity of blowing of the blowing holes 17 at different positions.

[0065] Optionally, the plurality of gas outlets of the gas inlet channel 14 are distributed on at least opposite two edges of the communication channel 110. For example Figure 3In the shown embodiment, the first gas outlet 143 and the second gas outlet 144 are located on a first side of the communication passage 110, and the third gas outlet 145, the fourth gas outlet 146 and the fifth gas outlet 147 are located on a second side of the communication passage 110 opposite to the first side.

[0066] In this way, the gas in the gas inlet passage 14 enters the communication passage 110 from at least two opposite sides of the communication passage 110 and is distributed to the gas collection passages 19, which can further improve the uniformity of the gas pressure in the gas collection cavity 15.

[0067] Optionally, the gas inlet passage 14 has at least two gas inlets. In this way, the compressed gas can enter the gas inlet passage 14 from at least two different positions, so as to accelerate the gas inlet speed, increase the gas inlet amount, and improve the uniformity of the gas flow speed in the gas inlet passage 14.

[0068] Optionally, the cover plate 2 is provided with a first magnetic attraction member. Correspondingly, the heating seat 1 is provided with a second magnetic attraction member 5 matched with the first magnetic attraction member. The cover plate 2 is attracted to the heating seat 1 by the first magnetic attraction member and the second magnetic attraction member 5. The cover plate 2 is magnetically attracted to the heating seat 1, which facilitates the disassembly and assembly of the cover plate 2 while ensuring the sealing strength of the cover plate 2 and the heating seat 1. Figure 2

[0069] The first magnetic attraction member and the second magnetic attraction member 5 can be magnets with opposite polarities. Alternatively, one of the first magnetic attraction member and the second magnetic attraction member 5 is a magnet, and the other is a magnetic metal.

[0070] The above description of the present application is sufficiently detailed and has certain particularity. Those skilled in the art should understand that the description in the embodiments is only exemplary, and all changes made without departing from the true spirit and scope of the present application should belong to the protection scope of the present application. The scope of protection claimed by the present application is defined by the claims, not by the above description of the embodiments.​

Claims

1. A welding strip drying device, characterized in that, The welding strip drying device includes a heating base, a cover plate, and heating elements, wherein: The heating element is disposed inside the heating base, and the heating element is used to heat the heating base; The heating seat is provided with an air intake channel and an air collection chamber located above the air intake channel. The air intake channel has at least one air inlet connected to an external compressed air source and at least one air outlet connected to the air collection chamber. A heating groove is formed on the first surface of the heating seat, and an air blowing hole connected to the air collection chamber is provided at the bottom of the heating groove. The cover plate is installed on the heating base and covers the groove port of the heating tank, and a space is formed between the cover plate and the bottom of the heating tank for the welding strip group to be heated to pass through; The airflow provided by the compressed air source flows into the air collection chamber through the air inlet channel, and then blows into the heating tank through the air blowing hole to dry the welding strip assembly in the heating tank.

2. The welding strip drying device as described in claim 1, characterized in that, The bottom of the heating tank is provided with multiple rows of air blowing holes, which are spaced apart along a first direction.

3. The welding strip drying device as described in claim 1, characterized in that, The heating element includes at least one heating rod and at least one thermocouple passing through the heating base.

4. The welding strip drying device as described in claim 1, characterized in that, The welding strip drying device also includes a connector disposed on the heating base and connected to the air inlet of the air inlet channel, the connector being connected to the compressed air source via a pipeline.

5. The welding strip drying device as described in claim 1, characterized in that, The heating base includes a base plate, a heating plate, and a ventilation plate, wherein: The heating element is disposed inside the heating plate, the air inlet channel is disposed on the first surface of the heating plate, and the air collection chamber is disposed on the second surface of the heating plate; The base plate is disposed on the first side of the heating plate and covers the air intake channel, and the ventilation plate is disposed on the second side of the heating plate and covers the air collection cavity; The heating groove is formed on the side of the ventilation plate opposite to the heating plate. The air vents are installed on the ventilation plate.

6. The welding strip drying device as described in claim 5, characterized in that: The gas collecting chamber is provided with multiple protruding strips arranged side by side. The multiple protruding strips divide the gas collecting chamber into multiple gas collecting channels and a connecting channel surrounding the outside of the multiple gas collecting channels. The multiple gas collecting channels are connected through the connecting channel. The air intake channel is a serpentine or S-shaped meandering channel; The air intake channel has at least one air inlet extending through the side wall of the heating plate, and the air intake channel has multiple air outlets extending through the communicating air channel; The projection of the air inlet is located within the air collecting channel and the connecting air channel.

7. The welding strip drying apparatus as described in claim 6, characterized in that, The air intake channel has multiple air outlets, and the diameter of the air outlet is inversely proportional to the airflow velocity at the location of the air outlet in the air intake channel.

8. The welding strip drying apparatus as described in claim 6, characterized in that, The plurality of air outlets are distributed on at least two opposite sides of the communicating air passage.

9. The welding strip drying device as described in claim 6, characterized in that, The air intake duct has at least two air inlets.

10. The welding strip drying apparatus as described in claim 1, characterized in that, The cover plate is provided with a first magnetic attraction element, and the heating base is provided with a second magnetic attraction element that matches the first magnetic attraction element; The cover plate is attracted to the heating base by the first magnetic attractor and the second magnetic attractor.

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