Active temperature control consolidation device for conductive silver paste

Abstract

The utility model relates to a conductive silver paste active temperature control consolidation device, which comprises a box body, a supporting plate is arranged in the box body, a heating structure is arranged at the top of the supporting plate, and the heating structure comprises a radiator, a water cooling block, a binding post, a laser chip, a mounting frame, a water inlet block, a water outlet block, a water inlet, a water outlet and a control panel. According to the conductive silver paste active temperature control consolidation device, by arranging the heating structure, when an electrode is heated, a battery piece is placed above a conveyor, then an external water pipe is connected with a water inlet, and water flows into a water inlet block from the water inlet, flows into a water outlet block through the water inlet block and flows out of the water outlet; heat generated in the laser chip is taken away through the water cooling block, the working stability of the laser chip is guaranteed, and the laser chip heats the electrode through the second through hole, so that the silver paste is heated, and the purpose of damaging a passivation layer is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuit manufacturing, in particular to an active temperature control consolidation device for conductive silver paste. Background Technique

[0002] The consolidation effect of conductive silver paste directly determines the performance of the electronic circuit produced by it. The consolidation process of conductive silver paste is accompanied by complex physical and chemical changes, including solvent volatilization, organic matter removal, silver particle fusion, etc., which jointly determine the consolidation effect of conductive silver paste. Laser can precisely heat the silver paste, locally damage the passivation layer, enable silver to directly contact with silicon, and on the premise of not damaging the silicon wafer, promote the local melting of the silver paste and diffusion into the surface of the silicon wafer to form tiny silver-silicon alloy junctions. Such alloy junctions have very low contact resistance and very high electron transmission efficiency. Therefore, there is no longer a need to rely on aluminum to reduce the contact resistance or form a local back field effect. Pure silver paste is sufficient to provide good electrical conductivity, and it also avoids the problems brought by silver-aluminum paste, and can achieve the dual effects of protecting battery performance and improving production efficiency.

[0003] Currently, the most widely used method is to find suitable consolidation process methods and consolidation process parameters through process experiment and trial and error. However, this method relies on experience and cannot ensure that the conductive silver paste consolidation process proceeds in an optimal manner, which is not conducive to the application of conductive silver paste and the increasingly demanding requirements of electronic circuits for performance. Therefore, an active temperature control consolidation device for conductive silver paste is proposed to solve the above problems. Content of the Utility Model

[0004] Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides an active temperature control consolidation device for conductive silver paste, which has the advantages of laser heating, etc., and solves the problem of large deviation in the heating temperature of conductive silver paste.

[0006] (2) Technical Solution

[0007] To achieve the above object, the utility model provides the following technical solution: An active temperature control consolidation device for conductive silver paste, including a box body, a support plate is arranged inside the box body, a heating structure is arranged on the top of the support plate, a hydraulic cylinder is fixedly installed on the top of the box body, a consolidation pressing block is fixedly installed at the bottom of the hydraulic cylinder, a conveyor is arranged inside the box body, ventilation ducts are arranged on both the front and rear sides of the box body, a fan is arranged inside the ventilation duct, and a filter plate is arranged inside the ventilation duct.

[0008] The heating structure includes a radiator, a water-cooling block, a terminal, a laser chip, a mounting bracket, a water inlet block, a water outlet block, a water inlet, a water outlet, and a control board. Two radiators are fixedly installed at the top of the support plate. A water-cooling block is arranged at the top of the radiator. Four terminals are arranged at the top of the support plate. A laser chip is arranged at the bottom of the radiator. Mounting brackets are arranged on the front and rear sides of the two water-cooling blocks. Water inlet blocks are arranged on the front and rear sides of the two water-cooling blocks. Water outlet blocks are arranged on the front and rear sides of the two water-cooling blocks. Water inlets are arranged on the front and rear sides of the two water-cooling blocks. Water outlets are arranged on the front and rear sides of the two water-cooling blocks. A control board is arranged at the top of the water-cooling block.

[0009] Further, first through holes are formed in the left and right sides of the box body, and the left and right sides of the conveyor extend to the outside of the box body through the two first through holes.

[0010] Further, sliding grooves are formed in the inner walls of the front and rear sides of the box body, and sliding rods are fixedly installed on the front and rear sides of the consolidation pressing block.

[0011] Further, the two sliding rods and the two sliding grooves are arranged to be slidably connected, and two second through holes are formed in the bottom of the support plate.

[0012] Further, protective covers are fixedly installed at the bottoms of the two second through holes, and heat absorption holes are formed at the upper ends of the water-cooling blocks.

[0013] Further, the two laser chips are both located above the two second through holes, and solar cells are arranged on the top of the conveyor.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0016] 1. In this active temperature-controlled consolidation device for conductive silver paste, by setting the heating structure, when heating the electrode, the solar cell is placed above the conveyor, and then an external water pipe is connected to the water inlet. Water flows into the water inlet block from the water inlet, then into the water outlet block through the water inlet block, and then flows out from the water outlet. The heat generated in the laser chip is taken away by the water-cooling block to ensure the stability of the laser chip's operation. The laser chip transfers the heat through the second through hole to heat the electrode at a high temperature, thereby heating the silver paste to achieve the purpose of destroying the passivation layer.

[0017] 2. The active temperature-controlled consolidation device for the conductive silver paste starts two fans after the mold moves to the bottom of the consolidation block following the conveyor through the set ventilation ducts. The two fans blow the external air flow into the box body, and at the same time, the two filter plates purify the air flow, enabling the silver paste inside the mold to cool down rapidly. Meanwhile, the hydraulic cylinder drives the consolidation block to move downward to compact the silver paste inside the mold, thereby completing the temperature-controlled consolidation function of the conductive silver paste. Brief Description of the Drawings

[0018] Figure 1 is the front elevation sectional view of the present utility model;

[0019] Figure 2 is the right elevation sectional view of the present utility model;

[0020] Figure 3 is the schematic diagram of the heating structure of the present utility model.

[0021] In the figures: 1. Box body; 2. Support plate; 3. Heating structure; 301. Radiator; 302. Water-cooling block; 303. Terminal; 304. Laser chip; 305. Mounting bracket; 306. Water inlet block; 307. Water outlet block; 308. Water inlet; 309. Water outlet; 310. Control board; 4. Hydraulic cylinder; 5. Consolidation block; 6. Conveyor; 7. Ventilation duct; 8. Fan; 9. Filter plate. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-3, An active temperature-controlled consolidation device for conductive silver paste in this embodiment includes a box body 1. Inside the box body 1, there is a support plate 2. On the top of the support plate 2, there is a heating structure 3. On the top of the box body 1, a hydraulic cylinder 4 is fixedly installed. At the bottom of the hydraulic cylinder 4, a consolidation pressing block 5 is fixedly installed. Inside the box body 1, there is a conveyor 6. On both the front and rear sides of the box body 1, there are ventilation ducts 7. Inside the ventilation ducts 7, there are fans 8. Inside the ventilation ducts 7, there is a filter plate 9. The heating structure 3 includes a radiator 301, a water-cooling block 302, a terminal 303, a laser chip 304, a mounting bracket 305, a water inlet block 306, a water outlet block 307, a water inlet 308, a water outlet 309, and a control board 310. On the top of the support plate 2, two radiators 301 are fixedly installed. On the top of the radiator 301, there is a water-cooling block 302. On the top of the support plate 2, four terminals 303 are arranged. At the bottom of the radiator 301, there is a laser chip 304. On the front and rear sides of the two water-cooling blocks 302, there are mounting brackets 305. On the front and rear sides of the two water-cooling blocks 302, there are water inlet blocks 306. On the front and rear sides of the two water-cooling blocks 302, there are water outlet blocks 307. On the front and rear sides of the two water-cooling blocks 302, there are water inlets 308. On the front and rear sides of the two water-cooling blocks 302, there are water outlets 309. On the top of the water-cooling block 302, there is a control board 310.

[0024] As Figure 1 and Figure 2 shown, on both the left and right sides of the box body 1, there are first through holes. On both the left and right sides of the conveyor 6, they extend to the outside of the box body 1 through the two first through holes. Place the mold above the conveyor 6. When consolidating the conductive silver paste, place the battery cell above the conveyor 6 and heat it inside the box body 1.

[0025] As Figure 1 and Figure 2 shown, on the inner walls of the front and rear sides of the box body 1, there are chutes. On the front and rear sides of the consolidation pressing block 5, there are sliding rods fixedly installed. When the consolidation pressing block 5 moves downward, the two sliding rods slide inside the two chutes, enabling the consolidation pressing block 5 to accurately reach the top of the battery cell.

[0026] As Figure 1 and Figure 2 shown, the two sliding rods and the two chutes are both set to be slidably connected. On the bottom of the support plate 2, there are two second through holes. The laser chip 304 passes the heat through the second through holes to heat the electrodes at the top of the battery cell at high temperature.

[0027] As Figure 1 and Figure 3As shown, protective covers are fixedly installed at the bottoms of both of the second through holes. An endothermic hole is provided at the upper end of the water-cooling block 302. When heating the top electrode of the battery cell, the protective covers protect the mold and the conveyor 6, preventing damage to the mold and the conveyor 6.

[0028] As Figure 1 and Figure 3 shown, both of the two laser chips 304 are located above the two second through holes. A battery cell is provided on the top of the conveyor 6. When heating the motor at the top of the battery cell, the heating laser passes through the second through hole. When encountering different materials, the temperature of the laser chip 304 can be adjusted by adjusting the control board 310.

[0029] During implementation, the operations are carried out in the following steps:

[0030] 1) First, place the electrode on the top of the battery cell and place the battery cell above the conveyor 6;

[0031] 2) Then, the laser chip 304 transfers heat through the second through hole to heat the electrode at the top of the battery cell at a high temperature;

[0032] 3) Then, start the two fans 8 to blow the external air flow into the interior of the box body 1, rapidly cooling the electrode at the top of the battery cell;

[0033] 4) Finally, the hydraulic cylinder 4 drives the consolidation block 5 to move downward to consolidate the electrode at the top of the battery cell.

[0034] In summary, for this active temperature-controlled consolidation device for conductive silver paste, by setting the heating structure 3, when heating the electrode, place the battery cell above the conveyor 6. Subsequently, connect the external water pipe to the water inlet 308. The water flows from the water inlet 308 into the water inlet block 306, then through the water inlet block 306 into the water outlet block 307, and finally flows out from the water outlet 309. The heat generated in the laser chip 304 is carried away by the water-cooling block 302, ensuring the stability of the operation of the laser chip 304. The laser chip 304 transfers heat through the second through hole to heat the electrode at a high temperature, thereby completing the heating of the silver paste to achieve the purpose of destroying the passivation layer. For this active temperature-controlled consolidation device for conductive silver paste, by setting the ventilation duct 7, after the mold moves to the bottom of the consolidation block 5 following the conveyor 6, start the two fans 8. The two fans 8 blow the external air flow into the interior of the box body 1. At the same time, the two filter plates 9 purify the air flow, rapidly cooling the silver paste inside the mold. At the same time, the hydraulic cylinder 4 drives the consolidation block 5 to move downward to consolidate the silver paste inside the mold, thereby completing the temperature-controlled consolidation function of the conductive silver paste.

[0035] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0036] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A conductive silver paste active temperature control consolidation device, comprising a box (1), characterized in that: A support plate (2) is arranged inside the box (1), a heating structure (3) is arranged on the top of the support plate (2), a hydraulic cylinder (4) is fixedly installed on the top of the box (1), a consolidation block (5) is fixedly installed on the bottom of the hydraulic cylinder (4), a conveyor (6) is arranged inside the box (1), ventilation ducts (7) are arranged on both the front and rear sides of the box (1), a fan (8) is arranged inside the ventilation duct (7), and a filter plate (9) is arranged inside the ventilation duct (7); The heating structure (3) comprises a radiator (301), a water cooling block (302), a terminal (303), a laser chip (304), a mounting frame (305), a water inlet block (306), a water outlet block (307), a water inlet (308), a water outlet (309) and a control panel (310); two radiators (301) are fixedly mounted on the top of the support plate (2); a water cooling block (302) is arranged on the top of the radiator (301); four terminal (303) is arranged on the top of the support plate (2); and the radiator (3 01) is provided with a laser chip (304) at the bottom, mounting frames (305) are provided on the front and rear sides of the two water cooling blocks (302), water inlet blocks (306) are provided on the front and rear sides of the two water cooling blocks (302), water outlet blocks (307) are provided on the front and rear sides of the two water cooling blocks (302), water inlets (308) are provided on the front and rear sides of the two water cooling blocks (302), water outlets (309) are provided on the front and rear sides of the two water cooling blocks (302), and a control panel (310) is provided on the top of the water cooling block (302).

2. The conductive silver paste active temperature control consolidation device according to claim 1, characterized in that: The box body (1) is provided with first through holes on both the left and right sides, and the conveyor (6) is extended to the outside of the box body (1) through the two first through holes on both the left and right sides.

3. The conductive silver paste active temperature control consolidation device according to claim 1, characterized in that: Slide grooves are provided on the front and rear inner walls of the box body (1), and slide bars are fixedly installed on the front and rear inner walls of the consolidation pressing block (5).

4. The conductive silver paste active temperature control consolidation device according to claim 3, characterized in that: The two sliding rods and the two sliding grooves are both arranged to be slidably connected, and two second through holes are provided at the bottom of the support plate (2).

5. The conductive silver paste active temperature control consolidation device according to claim 4, characterized in that: Protective covers are fixedly mounted on the bottoms of the two second through holes, and a heat absorbing hole is arranged at the upper end of the water cooling block (302).

6. The conductive silver paste active temperature control consolidation device according to claim 4, characterized in that: The two laser chips (304) are both located above the two second through holes, and a battery sheet is arranged on the top of the conveyor (6).

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