Flexible solar cell module packaging device and packaging method

Abstract

The invention discloses a flexible solar cell module packaging device and packaging method. The flexible solar cell module packaging device comprises a vacuum control system and a packaging system, the vacuum control system at least comprises an upper platform vacuum supporting structure, a lower platform vacuum supporting structure and a cavity vacuum control system, the upper platform vacuum supporting structure and the lower platform vacuum supporting structure form a closed cavity after die assembly, and the cavity vacuum control system adjusts vacuum pressure in the closed cavity; the packaging system at least comprises a mold closing power mechanism, a cover opening power mechanism, a displacement control mechanism, an upper cover overturning mechanism, a rubber sealing device and an excessive glue protection film; the mold closing power mechanism is connected with the lower platform vacuum supporting structure, the cover opening power mechanism is connected with the upper platform vacuum supporting structure, the displacement control mechanism is connected to the lower platform vacuum supporting structure, the upper cover turnover mechanism is connected with the upper platform vacuum supporting structure, and the lower platform vacuum supporting structure is connected with the upper cover turnover mechanism. The rubber sealing device is attached to the upper platform vacuum supporting structure, and the excessive glue protection film is used for being attached to the surfaces of the flexible solar cell module and the cover plate to conduct positioning and excessive glue protection on the flexible solar cell module and the cover plate. The vacuum packaging problem of the coplanar electrode curled flexible gallium arsenide solar cell is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of space power supply preparation technology, and in particular to a flexible solar cell component packaging device and packaging method. Background Art

[0002] The cost of launching transport rockets in my country is very high, and the need to reduce the weight of the launch payload is extremely urgent, which puts forward higher requirements for the storage volume and high weight-to-power ratio of satellites. At present, the space solar power system mainly relies on rigid gallium arsenide solar cells. The production of rigid solar cell modules mainly involves first welding the single cells, then completing the glass cover encapsulation, and finally realizing series welding through resistance welding. Rigid gallium arsenide solar cell modules have the following characteristics: 1) Single-piece solar cells cannot be bent and cannot be curled for storage; 2) The thickness is large and the weight-to-power ratio is low. Flexible thin-film gallium arsenide solar cells have the characteristics of light weight and high power ratio, but flexible thin-film gallium arsenide solar cells with electrodes on the same surface cannot realize the process of first encapsulation and then series welding.

[0003] At present, there are many research reports on flexible thin-film GaAs solar cells at home and abroad, but there are few reports on the packaging process of flexible thin-film GaAs solar cell modules with same-side electrodes. Since the electrodes of flexible thin-film modules with same-side electrodes are on the same side, they can only be welded in series by resistance welding and then covered with a cover. The modules after series connection are curled and flexibly connected, and the modules are long, which makes packaging difficult. In addition, the packaging material is different from the adhesive film used for terrestrial photovoltaics. In space environment, packaging can only use liquid space silicone, and packaging cannot be completed in a laminator. Therefore, the manufacturing process has severely limited the space application of flexible thin-film GaAs solar cells. Summary of the invention

[0004] The purpose of the present invention is to overcome the defect in the prior art that solar cell modules with electrodes on the same surface are difficult to be packaged in an integrated manner.

[0005] In order to achieve the above object, the present invention provides a flexible solar cell module packaging device, the packaging device at least comprising:

[0006] Vacuum control system and packaging system;

[0007] The vacuum control system at least comprises an upper platform vacuum support structure, a lower platform vacuum support structure, and a cavity vacuum control system. The upper platform vacuum support structure and the lower platform vacuum support structure are molded together to form a closed cavity. The cavity vacuum control system adjusts the vacuum pressure in the closed cavity.

[0008] The packaging system at least includes a mold clamping power mechanism, a cover opening power mechanism, a displacement control mechanism, an upper cover flipping mechanism, a rubber sealing device, and an overflow glue protection film; the mold clamping power mechanism is connected to the lower platform vacuum support structure, the cover opening power mechanism is connected to the upper platform vacuum support structure, the displacement control mechanism is connected to the lower platform vacuum support structure, the upper cover flipping mechanism is connected to the upper platform vacuum support structure, the rubber sealing device is attached to the upper platform vacuum support structure, and the overflow glue protection film is used to stick to the surface of the flexible solar cell module and the cover sheet to position the flexible solar cell module and the cover sheet and protect them from overflow glue.

[0009] Optionally, the upper platform vacuum support structure and the lower platform vacuum support structure are both externally connected to a vacuum pump.

[0010] Optionally, the upper platform vacuum support structure and the lower platform vacuum support structure are both connected to a first vacuum pipe, and a vacuum adsorption switch is independently provided on the first vacuum pipe corresponding to each flexible solar cell.

[0011] Optionally, the vacuum degree of the first vacuum pipe is not less than -95 KPa.

[0012] Optionally, the cavity vacuum system is connected to a second vacuum pipeline.

[0013] Optionally, the cover opening power mechanism is externally connected to an air compressor.

[0014] Optionally, the packaging system further comprises a guide column, which has a guiding and positioning function during the mold closing process.

[0015] Optionally, the upper cover flipping mechanism can rotate 0° to 180° after the cover sheet is adsorbed.

[0016] The present invention also provides a packaging method for the flexible solar cell assembly packaging device as described above, which at least comprises the following steps:

[0017] Step 1: After the flexible solar cell assembly is welded in series, it is turned over on the welding platform, and a glue overflow protection film is pasted on the back of the flexible solar cell assembly;

[0018] Step 2: Positioning the cover sheet on the glass cover sheet positioning tool, and pasting an overflow protective film on the front of the cover sheet;

[0019] Step 3, placing the flexible solar cell module with the overflow protection film attached on the vacuum support structure of the lower platform, turning on the vacuum adsorption switch, and positioning and adsorbing the flexible solar cell module;

[0020] Step 4: Place the cover sheet with the overflow protection film on the upper platform vacuum support structure, turn on the vacuum adsorption switch, and position and adsorb the cover sheet;

[0021] Step 5, using a glue coating mechanism to apply glue on the surface of the flexible solar cell module;

[0022] Step 6: After the glue coating is completed, the mold clamping power mechanism is started to clamp the upper platform vacuum support structure and the lower platform vacuum support structure to form a closed cavity;

[0023] Step seven, degassing the sealed cavity, and after degassing, performing vacuum pressing.

[0024] Optionally, in step seven, the vacuum degree in the sealed cavity is lower than the vacuum degree of the first vacuum pipe.

[0025] Compared with the prior art, the beneficial effects of the present invention include at least:

[0026] The flexible solar cell module packaging device of the present invention comprises a vacuum control system and a packaging system, wherein the vacuum control system comprises an upper platform vacuum support structure, a lower platform vacuum support structure and a cavity vacuum control system. When packaging the flexible solar cell module, the overflow glue protection film is pasted on the flexible solar cell module and the cover sheet respectively, and then the flexible solar cell module pasted with the overflow glue protection film is placed on the lower platform vacuum support structure, the flexible solar cell module is positioned and adsorbed, and the cover sheet pasted with the overflow glue protection film is placed on the upper platform vacuum support structure, the cover sheet is positioned and adsorbed, and the mold clamping power mechanism clamps the upper platform vacuum support structure and the lower platform vacuum support structure to form a closed cavity, and the flexible solar cell module and the cover sheet are packaged. By setting the pressure difference between the vacuum adsorption platform and the closed cavity, the vacuum packaging problem of the same-surface electrode curled flexible gallium arsenide solar cell is effectively solved, and the process requirement of first degassing the cover sheet glue and then accurately fitting it in a relatively vacuum environment is achieved, which promotes the research and development, application and development progress of aerospace lightweight flexible products. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a schematic structural diagram of a flexible solar cell module packaging device.

[0028] Figure 2 The present invention is a schematic diagram of a protective film for overflow of a flexible solar cell module packaging device.

[0029] Figure 3 This is a physical picture of a flexible solar cell module packaging device of the present invention.

[0030] Figure identification: 1-upper platform vacuum support structure, 2-upper cover flipping mechanism, 3-displacement control mechanism, 4-cavity vacuum control system, 5-rubber sealing device, 6-guide column, 7-lower platform vacuum support structure, 8-mold clamping power mechanism, 9-cover opening power mechanism, 10-overflow glue protection film. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] like Figures 1 to 3 As shown, a flexible solar cell module packaging device provided by the present invention, the packaging device at least comprises: a vacuum control system and a packaging system; the vacuum control system at least comprises an upper platform vacuum support structure 1, a lower platform vacuum support structure 7, and a cavity vacuum control system 4, the upper platform vacuum support structure 1 and the lower platform vacuum support structure 7 are molded to form a closed cavity, and the cavity vacuum control system 4 adjusts the vacuum pressure in the closed cavity; the packaging system at least comprises a mold clamping power mechanism 8, a cover opening power mechanism 9, a displacement control mechanism 3, and an upper cover flipping mechanism 2 , rubber sealing device 5, and overflow glue protection film 10; the mold clamping power mechanism 8 is connected to the lower platform vacuum support structure 7, the cover opening power mechanism 9 is connected to the upper platform vacuum support 1 structure, the displacement control mechanism 3 is connected to the lower platform vacuum support structure 7, the upper cover flipping mechanism 2 is connected to the upper platform vacuum support structure 7, the rubber sealing device 5 is attached to the upper platform vacuum support structure 1, and the overflow glue protection film 10 is used to stick to the surface of the flexible solar cell module and the cover sheet to position the flexible solar cell module and the cover sheet and protect them from overflow glue.

[0033] In some embodiments, the upper platform vacuum support structure 1 and the lower platform vacuum support structure 7 are both externally connected to a vacuum pump, and the upper platform vacuum support structure 1 has a laser positioning scale line for packaging materials. The upper platform vacuum support structure 1 realizes the positioning and adsorption function of packaging materials by connecting to the vacuum pump, and forms a rigid connection with the lower platform vacuum support structure 7 through the upper cover flip mechanism 2; the upper platform vacuum support structure 1 and the lower platform vacuum support structure 7 are both connected to a first vacuum pipe, and a vacuum adsorption switch is independently set on the first vacuum pipe corresponding to each flexible solar cell, and the vacuum degree of the first vacuum pipe is not less than -95KPa. The lower platform vacuum support structure 7 has a laser positioning scale line for flexible solar cell components, and realizes the positioning and adsorption function of flexible solar cell components by connecting to a vacuum pump.

[0034] The upper cover flipping mechanism 2 has the function of rotating the upper platform vacuum support structure 1. The displacement control mechanism 3 is provided with components of different matching heights. The cavity vacuum control system 4 realizes vacuum control in the closed cavity by connecting with a vacuum pump. The cavity vacuum system 4 is connected to a second vacuum pipe, and the vacuum degree of the second vacuum pipe is set not higher than -92KPa and not lower than -85KPa. The cavity vacuum control system 4 and the upper platform vacuum support structure 1 are independently controlled by vacuum; the rubber sealing device 5 is provided with a sealing ring and a locking mechanism, and the packaging system also includes a guide column 6, which cooperates with the mold clamping power mechanism 8 to clamp the mold; the overflow protective film 10 can be an acrylic adhesive.

[0035] The working principle of the flexible solar cell module packaging device of the present invention is as follows: the overflow glue protection film 10 is pasted on the back of the flexible solar cell module to protect and position the flexible solar cell module, and it is adsorbed on the lower platform vacuum support structure 7 by vacuum; the overflow glue protection film 10 is pasted on the front of the packaging material to protect and position the packaging material, and it is adsorbed on the upper platform vacuum support structure 1 by vacuum; after the surface of the flexible solar cell module is coated with glue, the upper cover flip mechanism 2 is rotated, and the closed cavity formed between the flexible solar cell module and the packaging material is sealed by the rubber sealing device 5, and the cavity vacuum control system 4 is turned on to degas the closed cavity, and the packaging material is prevented from falling and the bubbles in the glue layer are burst by setting the pressure difference. After the vacuum degassing reaches the preset time, the mold closing power mechanism 8 is started to close the mold of the flexible solar cell module and the packaging material. During the closing process, the guide column 6 is used to control the accuracy to achieve the bonding of the flexible solar cell and the packaging material. The bonding thickness is preset and controlled by the displacement control mechanism 3. After the packaging is completed, the cover opening power mechanism 9 is turned on to open the cover.

[0036] In summary, the flexible solar cell module packaging device of the present invention includes a vacuum control system and a packaging system, which utilizes the setting of the pressure difference between the vacuum adsorption platform and the closed cavity to effectively solve the packaging problem of the flexible solar cell module, avoid the generation of bubbles during the bending, winding and packaging process of the module, and realize the vacuum packaging of the flexible curled gallium arsenide solar cell long module, support the space environment application of the same-surface flexible thin-film solar cells, improve the weight-to-power ratio of the satellite, and greatly reduce the satellite launch cost.

[0037] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A flexible solar cell module packaging device, characterized in that: The packaging device at least comprises: a vacuum control system and a packaging system; The vacuum control system at least comprises an upper platform vacuum support structure, a lower platform vacuum support structure, and a cavity vacuum control system. The upper platform vacuum support structure and the lower platform vacuum support structure are molded together to form a closed cavity. The cavity vacuum control system adjusts the vacuum pressure in the closed cavity. The packaging system at least includes a mold clamping power mechanism, a cover opening power mechanism, a displacement control mechanism, an upper cover flipping mechanism, a rubber sealing device, and an overflow glue protection film; the mold clamping power mechanism is connected to the lower platform vacuum support structure, the cover opening power mechanism is connected to the upper platform vacuum support structure, the displacement control mechanism is connected to the lower platform vacuum support structure, the upper cover flipping mechanism is connected to the upper platform vacuum support structure, the rubber sealing device is attached to the upper platform vacuum support structure, and the overflow glue protection film is used to stick to the surface of the flexible solar cell module and the cover sheet to position the flexible solar cell module and the cover sheet and protect them from overflow glue.

2. The flexible solar cell module packaging device according to claim 1, characterized in that: The upper platform vacuum support structure and the lower platform vacuum support structure are both externally connected to a vacuum pump.

3. The flexible solar cell module packaging device according to claim 1, characterized in that: The upper platform vacuum support structure and the lower platform vacuum support structure are both connected to a first vacuum pipe, and a vacuum adsorption switch is independently arranged on the first vacuum pipe corresponding to each flexible solar cell.

4. The flexible solar cell module packaging device according to claim 3, characterized in that: The vacuum degree of the first vacuum pipeline is not less than -95KPa.

5. The flexible solar cell module packaging device according to claim 1, characterized in that: The cavity vacuum system is connected to a second vacuum pipeline.

6. The flexible solar cell module packaging device according to claim 1, characterized in that: The cover opening power mechanism is externally connected to an air compressor.

7. The flexible solar cell module packaging device according to claim 1, characterized in that: The packaging system also includes a guide column, which has a guiding and positioning function during the mold closing process.

8. The flexible solar cell module packaging device according to claim 1, characterized in that: The upper cover flipping mechanism can rotate 0° to 180° after the cover sheet is adsorbed.

9. A packaging method for a flexible solar cell module packaging device as claimed in any one of claims 1 to 8, characterized in that: At least the following steps are included: Step 1: After the flexible solar cell assembly is welded in series, it is turned over on the welding platform, and a glue overflow protection film is pasted on the back of the flexible solar cell assembly; Step 2: Positioning the cover sheet on the glass cover sheet positioning tool, and pasting an overflow protective film on the front of the cover sheet; Step 3, placing the flexible solar cell module with the overflow protection film attached on the vacuum support structure of the lower platform, turning on the vacuum adsorption switch, and positioning and adsorbing the flexible solar cell module; Step 4: Place the cover sheet with the overflow protection film on the upper platform vacuum support structure, turn on the vacuum adsorption switch, and position and adsorb the cover sheet; Step 5, using a glue coating mechanism to apply glue on the surface of the flexible solar cell module; Step 6: After the glue coating is completed, the mold clamping power mechanism is started to clamp the upper platform vacuum support structure and the lower platform vacuum support structure to form a closed cavity; Step seven, degassing the sealed cavity, and after degassing, performing vacuum pressing.

10. The packaging method according to claim 9, characterized in that: In step seven, the vacuum degree in the sealed cavity is lower than the vacuum degree of the first vacuum pipe.

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