TWI860060B - The packaging method and the connecting method for organic photovoltaic module - Google Patents

Abstract

An organic photovoltaic module packaging method includes: providing an organic photovoltaic module which includes a positive and a negative module electrodes, a positive and a negative connecting electrodes, wherein the positive connecting electrode is electrically connected with positive module electrode, and the negative connecting electrode is electrically connected with negative module electrode; providing two pieces of packaging films, the packaging film includes a barrier film layer and a pressure-sensitive adhesive layer, and the pressure-sensitive adhesive layer is transfer-printed on the barrier film layer; performing a lamination process, which includes disposing the organic photovoltaic module between two packing films, where the pressure-sensitive adhesive layer is in contacted with the upper and lower surface of the organic photovoltaic module respectively, and then laminate to form a packaged photovoltaic module; performing a grommet punch step includes forming a positive and a negative terminal electrode grommets on the packaged organic photovoltaic module corresponding to the positive and negative connection electrodes, so as to form an organic photovoltaic module with terminal electrodes.

Description

Method for packaging a flexible organic solar cell module and method for connecting the module

This disclosure relates to a solar cell module packaging method, in particular a flexible organic solar cell module packaging method, and a method for connecting a plurality of flexible organic solar cell modules using the same.

Organic solar cells have high photoelectric conversion efficiency in weak light environments, so they have gradually been discussed in recent years as a power source for low-power electronic devices. The emergence of the Internet of Things has not only changed the way we work and live, but also created an application stage for organic solar cells to show their talents. There are currently a large number of devices in the world that can connect to the Internet, such as mobile phones, wearable devices and sensors that are connected to the Internet of Things network platform. Such a large number of independent and off-grid gadgets will require lightweight portable batteries. In addition, how to make these batteries conveniently and timely rechargeable will be a big challenge. Similarly, organic solar cells also have niche applications outdoors. Especially with the government's promotion of green energy policies, organic solar cells, which belong to "green energy technology", can not only play a creative role, but also open up a wider range of application fields with their unique advantage of being able to be made into light-transmitting structures, such as the canopy of agricultural greenhouses or building integrated solar cells. However, lifespan will be a key factor affecting the entry of organic solar cells into the above applications.

The conventional technology of organic solar cell packaging mostly uses glass as the substrate for packaging, and rarely uses soft substrates as the development target. The method is to fix the glass substrate and the component with an organic adhesive, and attach an adsorbent (getter) between the cover and the component. The airtightness of the glass can block most of the external gas, and the adsorbent is used to adsorb the gas that penetrates through the organic adhesive. Although this packaging method has good effects, its disadvantages are high cost and complicated process. It is not only not conducive to large-scale production, but also cannot be used for soft substrates.

The prior art CN206516639U patent discloses an EVA film for encapsulating solar cells. The upper EVA film and the middle UV-proof glass layer, and the middle UV-proof glass layer and the lower EVA film are tightly bonded together through a silane coupling agent hydrophilic film, and have excellent anti-aging properties. However, although the patent has excellent functional characteristics, it is applied to a glass substrate and is not compatible with a flexible solar cell module.

For example, the prior art patent TWI457232 discloses a method of increasing the gas barrier rate by using a layer containing a polyorganosiloxane compound and an inorganic layer disposed on the layer containing the polyorganosiloxane compound. However, the thickness of the film layer is up to 1000nm, and it may affect the bendability of the entire module, and is not suitable for the packaging of flexible organic solar cell modules.

In the strategy of soft substrate packaging, since the gas barrier rate of soft substrate is relatively poor, the general practice is to coat a layer of gas barrier film on the soft substrate to increase the gas barrier rate. It is usually made by sputtering, evaporation, plasma-assisted chemical vapor deposition (PECVD), etc., but the cost of these methods is relatively high. In addition, coating a layer of film that increases the gas barrier rate on the barrier film with a high-cost process not only has concerns about affecting light transmittance and bendability, but the organic solvent in the packaging glue may also react with the film layer in the organic solar cell, thereby destroying the performance of the organic solar cell module.

In addition, there is also a multi-layer packaging method to improve the gas barrier ability of the flexible solar cell module. However, the multi-layer stacking method will inevitably lead to increased costs and the problem of reduced light transmittance and bendability. In addition, in order to delay the time for external moisture to enter the module in the packaging structure, the module and the terminal electrode must be kept at a certain distance. The module and the terminal electrode are often connected through conductive materials, but this material will prevent the barrier film from being tightly bonded during bonding, thus forming a path for external moisture to enter.

In view of the many problems of the above-mentioned technologies, this disclosure proposes a low-cost, high-cost-effective flexible solar cell module packaging method, which can not only greatly improve the life of organic solar cells, but also be widely used in different application fields. The characteristics of this disclosure are that it uses a solvent-free pressure sensitive adhesive (PSA) on a barrier film with a low gas barrier rate to reduce the water content in the barrier film and the adhesive during the pre-packaging treatment, and then the module is packaged in a double-layer full-surface bonding method.

Furthermore, in order to guide the power of the flexible solar battery module, the electrode must be exposed and in contact with the outside, which will lead to the possibility of water and oxygen intrusion, and the closer the distance between the exposed part and the module, the faster the efficiency of the module will deteriorate. Therefore, the present disclosure proposes to use different connection designs between the module and the external electrode to block the intrusion path of water and oxygen from the electrode contact point, and fill the electrode contact point with ultraviolet curing glue. The experimental results show that the packaging method of the flexible solar battery module disclosed in the present disclosure can greatly increase the life of the module.

According to an embodiment of the present disclosure, a method for packaging a flexible organic solar cell module is provided, including: providing a flexible organic solar cell module, providing two packaging films, performing a pressing process, and performing a nailing step. The flexible organic solar cell module further includes a positive module electrode, a negative module electrode, a positive connecting electrode, and a negative connecting electrode; wherein the positive connecting electrode is electrically connected to the positive module electrode, and the negative connecting electrode is electrically connected to the negative module electrode. The packaging film includes: an insulating film layer and a pressure-sensitive adhesive layer, and the pressure-sensitive adhesive layer is transferred onto the insulating film layer. The pressing process includes placing the flexible organic solar cell module between two packaging films, and laminating the pressure-sensitive adhesive layers of the two packaging films with the upper and lower surfaces of the flexible organic solar cell module respectively, and then pressing them together to form a packaged flexible organic solar cell module. The nailing step includes forming a positive terminal electrode nailing hole and a negative terminal electrode nailing hole respectively at the positive connection electrode and the negative connection electrode on the packaged flexible organic solar cell module to form a flexible organic solar cell module with terminal electrodes, wherein the positive connection electrode and the negative connection electrode can be electrically connected to the external circuit through the positive terminal electrode nailing hole and the negative terminal electrode nailing hole respectively.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module, wherein, after the nailing step is performed, a sealing step is further performed, wherein a photocurable glue is applied to the gap between the positive electrode nailing hole and the negative electrode nailing hole and the packaging film, and light is irradiated to cure it.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module, before the lamination process is implemented, further includes a vacuum heating step, including placing two pieces of packaging film in a vacuum oven and heating them at 100-110 degrees Celsius for at least 8 hours to remove the residual moisture and oxygen content in the barrier film layer and the pressure-sensitive adhesive layer. In another embodiment of the present disclosure, the above-mentioned vacuum heating step further includes placing two pieces of packaging film in a vacuum oven and heating them at about 105 degrees Celsius for at least 8 hours.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module, wherein the positive module electrode and the negative module electrode are made of conductive tape.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module, wherein the positive connection electrode and the negative connection electrode are made of a silver wire or a conductive tape.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module, wherein the positive connection electrode and the negative connection electrode are composed of a plurality of silver wires.

In one embodiment of the present disclosure, in any of the above-mentioned flexible organic solar cell module packaging methods, the silver wire is formed by evaporation.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module, wherein the nailing step includes nailing holes corresponding to the positive connection electrode and the negative connection electrode on the packaged flexible organic solar cell module by a button nailing method and adding positive terminal electrode nailing holes and negative terminal electrode nailing holes, so that the connection electrode and the negative connection electrode packaged in the packaging film can be electrically connected to the external circuit.

The present disclosure further provides a method for connecting a plurality of flexible organic solar modules according to a packaging method of a flexible organic solar cell module disclosed in the above embodiments, including: providing a plurality of packaged flexible organic solar cell modules as described in any of the packaging methods of the above embodiments, performing a connection step, and performing a nailing step. In the plurality of packaged flexible organic solar cell modules provided, the positive connection electrode and the negative connection electrode respectively include at least one silver wire. The connecting step includes arranging a plurality of packaged flexible organic solar battery modules side by side so that the positive connection electrode of one packaged flexible organic solar battery module is close to the negative connection electrode of another packaged flexible organic solar battery module, and using a conductive tape to adhere the positive connection electrode of the packaged flexible organic solar battery module to the negative connection electrode of another packaged flexible organic solar battery module on both sides. Implementing the nailing step includes forming positive terminal electrode nailing holes and negative terminal electrode nailing holes at the positive connection electrodes and negative connection electrodes at both ends of the multiple flexible organic solar modules that are connected in the connecting step and are not attached with conductive tape, so that the positive connection electrodes and negative connection electrodes at both ends of the multiple flexible organic solar modules that are connected can be electrically connected to the external circuit through the positive terminal electrode nailing holes and the negative terminal electrode nailing holes.

100: Barrier film layer

200: Pressure-sensitive adhesive layer

300: Packaging film

400: Flexible organic solar cell module

411: Positive module electrode

412: Negative module electrode

421: Positive connection electrode

422: Negative connection electrode

431: Positive electrode nail hole

432: Negative electrode nail hole

500: Flexible organic solar cell module after packaging

600: Flexible organic solar cell module with terminal electrodes

700: Light-curing adhesive

800: Conductive tape

S100: Pressing procedure

S200: Nailing steps

S300: Sealing step

Figure 1A is a schematic diagram of a cross-sectional view of a packaging film and a flexible organic solar cell module according to one embodiment of the present disclosure.

Figure 1B is a schematic top view of a flexible organic solar cell module according to one embodiment of the present disclosure.

Figure 2A is a schematic cross-sectional view of one embodiment of the present disclosure after the pressing process is performed.

Figure 2B is a schematic top view of one embodiment of the present disclosure after the pressing process is performed.

Figures 3A and 3B are schematic diagrams of a flexible organic solar cell module after packaging according to one embodiment of the present disclosure.

Figure 4 is a schematic diagram of a flexible organic solar cell module after connecting multiple packages according to an embodiment of the present disclosure.

The following will refer to the relevant drawings to illustrate an embodiment of a packaging method of a flexible organic solar cell module disclosed in the present disclosure. For the sake of clarity and convenience of the diagram description, the size and proportion of each component in the diagram may be exaggerated or reduced. In the following description and/or patent application scope, the technical terms used should be interpreted in accordance with the meanings commonly known and used by people of ordinary skill in the art. For ease of understanding, the same elements in the following embodiments are illustrated with the same symbols. The terms "including", "comprising", "having", etc. mentioned in this disclosure are all open terms, that is, "including but not limited to".

Please refer to Figures 1A to 3B, which are schematic diagrams of a process of packaging a flexible organic solar cell module according to an embodiment of the present disclosure. First, please refer to Figures 1A and 1B. According to the packaging method of the flexible organic solar cell module proposed in the present disclosure, it includes: providing a flexible organic solar cell module 400, providing two packaging films 300, performing a pressing process S100 (as shown in Figures 2A and 2B), and performing a nailing step S200 (as shown in Figures 3A and 3B). As shown in FIG. 1B , the flexible organic solar cell module 400 further includes a positive module electrode 411, a negative module electrode 412, a positive connection electrode 421, and a negative connection electrode 422; wherein the positive connection electrode 421 is electrically connected to the positive module electrode 411, and the negative connection electrode 422 is electrically connected to the negative module electrode 412. As shown in FIG. 1A , the packaging film 300 includes: an insulating film layer 100 and a pressure-sensitive adhesive layer 200, and the pressure-sensitive adhesive layer 200 is transferred onto the insulating film layer 100. Referring to FIGS. 1A to 2B , the pressing process S100 includes placing the flexible organic solar cell module 400 between two packaging films 300 , and laminating the pressure-sensitive adhesive layers 200 of the two packaging films 300 with the upper and lower surfaces of the flexible organic solar cell module 400 , respectively, to form a packaged flexible organic solar cell module 500 . Please refer to Figure 3A and Figure 3B again. As shown in the figure, the nailing step S200 includes forming a positive terminal electrode nailing hole 431 and a negative terminal electrode nailing hole 432 on the packaged flexible organic solar cell module 500 corresponding to the positive connection electrode 421 and the negative connection electrode 422, respectively, to form a flexible organic solar cell module 600 with terminal electrodes, wherein the positive connection electrode 421 and the negative connection electrode 422 can be electrically connected to the external circuit through the positive terminal electrode nailing hole 431 and the negative terminal electrode nailing hole 432, respectively.

It should be understood that the pressure-sensitive adhesive layer 200 used in the embodiment of the present disclosure is first transferred onto the barrier film layer 100 before packaging. Therefore, during the transfer process, care should be taken to avoid the formation of small bubbles between the pressure-sensitive adhesive layer 200 and the barrier film layer 100. Generally speaking, one of the main reasons for the formation of small bubbles is that the pressure-sensitive adhesive layer 200 and the barrier film layer 100 are surrounded by atmosphere/air due to uneven bonding during the transfer process. The water vapor and oxygen present in the small bubbles will further lead to rapid degradation of the flexible organic solar module, thereby affecting the service life of the entire module.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module 400, wherein after the nailing step S200 is performed, it further includes performing a sealing step S300 (see FIG. 3A and FIG. 3B), applying a photocurable glue 700 to the gap between the positive electrode nailing hole 431 and the negative electrode nailing hole 432 and the packaging film 300, and curing it by irradiating light. It is worth noting that since the photocurable glue 700 can be effectively used to block air or atmosphere, it can be used not only to fill the gap between the positive electrode nailing hole 431 and the negative electrode nailing hole 432 and the packaging film 300. In another embodiment, after the lamination process S100 is performed, if there is residual air between the packaging film 300 and the flexible organic solar cell module 400 after packaging or there are other places that may cause the component to be exposed to the atmosphere, the light-curing adhesive 700 can be used to further fill and cure to achieve the purpose of blocking the atmosphere and extending the service life of the component.

It should be noted that in one embodiment of the present disclosure, if there is residual moisture in the packaging film after packaging or there is a gap between the positive electrode nail hole 431, the negative electrode nail hole 432 and the packaging film 300 and it is not filled with the photocuring glue 700, the efficiency of the packaged flexible organic solar cell module 600 will drop to less than 80% of the initial value in less than 50 hours. On the contrary, if the gap is filled with the photocuring glue 700 and the water vapor intrusion channel is indeed blocked, the efficiency of the packaged flexible organic solar cell module can still be maintained at more than 80% of the initial value after 600 hours of testing.

In one embodiment of the present disclosure, the packaging method of the flexible organic solar cell module 400 further includes a vacuum heating step before the lamination process S100 is performed, including placing the two packaging films 300 in a vacuum oven and heating them at 100-110 degrees Celsius for at least 8 hours to remove the residual moisture and oxygen content in the barrier film layer 100 and the pressure-sensitive adhesive layer 200. In another embodiment of the present disclosure, the vacuum heating step further includes placing the two packaging films 300 in a vacuum oven and heating them at about 103 degrees Celsius, 104 degrees Celsius, 105 degrees, 106 degrees, 107 degrees, 108 degrees, 109 degrees Celsius for at least 8 hours, or at least 9 hours, or at least 10 hours, or at least 11 hours. It is preferred to heat at about 105 degrees Celsius for at least 8 hours. The heating temperature and time can be appropriately adjusted according to the volatility of the residual water vapor and oxygen content in the barrier film layer 100 and the pressure-sensitive adhesive layer 200.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module 400, wherein the positive module electrode 411 and the negative module electrode 412 are made of conductive tape.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module 400, wherein the positive connection electrode 421 and the negative connection electrode 422 are made of a silver wire or a conductive tape.

In another embodiment of the present disclosure, in the packaging method of the above-mentioned flexible organic solar cell module 400, the positive connection electrode 421 and the negative connection electrode 422 are made of silver wire. It should be understood that the thickness of the conductive tape is thicker than that of the silver wire. Therefore, if the conductive tape is used, after packaging, it is easy to cause the conductive tape to have a certain thickness, so that when the packaging film 300 is pressed against the conductive tape, the surrounding area of the conductive tape cannot be completely sealed, and there is a gap/atmosphere, which is also one of the ways for moisture to invade the packaging module. At this time, light-curing glue 700 can be injected into these gaps and cured under light, which can also effectively block the path of water vapor intrusion and effectively increase the service life of the packaged flexible organic solar cell module 600.

In addition, in the above-mentioned embodiment, in the packaging method of the above-mentioned flexible organic solar cell module 400, if the positive connection electrode 421 and the negative connection electrode 422 are made of conductive tape, and there are gaps in the packaging film 300 after packaging, the overall module efficiency will drop below the initial 80% in less than 50 hours after testing. However, when the gaps in the above-mentioned packaging film 300 are completely filled with light-curing adhesive 700 to prevent moisture intrusion, the time for the overall module efficiency to drop to 80% can be extended to about 200 hours after testing. Furthermore, when the positive connection electrode 421 and the negative connection electrode 422 are made of silver wire, and there are no gaps in the packaging film 300 after packaging or all gaps are filled with light-curing glue 700, the overall module efficiency can still be maintained at more than 80% of the initial value even after 600 hours.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module 400, wherein the positive connection electrode 421 and the negative connection electrode 422 are composed of a plurality of silver wires. Further, in this embodiment, the positive connection electrode 421 and the negative connection electrode 422 are composed of a plurality of silver wires, and after packaging, there is no gap or any gap or possible invasion path is filled with light-curing glue 700, and the efficiency of the entire module can be maintained at more than 80% of the initial value even after 600 hours. To explain in detail, in this embodiment, when the positive connection electrode 421 and the negative connection electrode 422 are composed of a plurality of silver wires and the above-mentioned packaging is completed, the entire module is placed in a high humidity and heat environment with a temperature of 65°C and a humidity of 65%, and a durability test is performed using a standard light source (1-sun) for continuous illumination. The results show that the packaged flexible organic solar cell module 600 manufactured according to the above-mentioned packaging method disclosed in this disclosure can still maintain an overall module efficiency of more than 80% (converted to a practical use environment life of about 3 years) even after 600 hours of testing in a high humidity and heat environment, and has good resistance and reproducibility.

In one embodiment of the present disclosure, the packaging method of the above-mentioned flexible organic solar cell module 400, wherein the nailing step S200 includes nailing holes corresponding to the positive connection electrode 421 and the negative connection electrode 422 on the packaged flexible organic solar cell module 500 by a button nailing method and adding a positive terminal electrode nail hole 431 and a negative terminal electrode nail hole 432, so that the positive connection electrode 421 and the negative connection electrode 422 packaged in the packaging film can be electrically connected to the external circuit. Generally speaking, after the organic solar cell module is packaged, there must be an area where the electrodes are pulled out (i.e., the positive and negative connection electrodes) at the left and right ends of the module. This area must be connected to an external power device. Therefore, the positive and negative connection electrodes, which were originally packaged with the barrier film 300, must penetrate the barrier film 300, so that the positive connection electrode 421 and the negative connection electrode 422 inside are exposed. This method usually creates a path for water and oxygen to invade. Therefore, after the positive and negative connection electrodes are connected to the external connection, a sealing step S300 will be implemented, which uses a light-curing glue 700 to seal the previously exposed area, as shown in Figures 3A and 3B.

Next, please refer to FIG. 4. The present disclosure further provides a method for connecting a plurality of flexible organic solar modules according to a packaging method of a flexible organic solar cell module 400 disclosed in the above-mentioned embodiments, including: providing a plurality of packaged flexible organic solar cell modules 500 as described in the packaging method of any of the above-mentioned embodiments, performing a connection step, and performing a nailing step. Among them, the positive connection electrode 421 and the negative connection electrode 422 of the provided plurality of packaged flexible organic solar cell modules 500 respectively include at least one silver wire. The connecting step includes arranging a plurality of packaged flexible organic solar cell modules 500 side by side so that the positive connection electrode 421 of one packaged flexible organic solar cell module 500 is close to the negative connection electrode 422 of another packaged flexible organic solar cell module 500, and using a conductive tape 800 to adhere the positive connection electrode 421 of the packaged flexible organic solar cell module 500 to the negative connection electrode 422 of another packaged flexible organic solar cell module 500 on both sides. The nailing step includes forming positive terminal electrode nailing holes 431 and negative terminal electrode nailing holes 432 at the positive connection electrodes 421 and negative connection electrodes 422 of the multiple flexible organic solar modules that are connected in the connecting step and are not attached with the conductive tape 800, so that the positive connection electrodes 421 and negative connection electrodes 422 at the two ends of the multiple flexible organic solar modules that are connected can be electrically connected to the external circuit through the positive terminal electrode nailing holes 431 and negative terminal electrode nailing holes 432. The multiple flexible organic solar modules after connection are as a whole as shown in FIG. 4.

In summary, the packaging method of the flexible organic solar cell module disclosed herein has the following advantages:

1. The packaging method disclosed herein can effectively improve the life of the flexible organic solar cell module.

2. The packaging method disclosed herein utilizes a soft barrier film layer and a pressure-sensitive adhesive layer to completely cover the entire flexible organic solar cell module by double-sided lamination, so that the flexible organic solar cell module as a whole still has a high degree of bendability after packaging.

3. The connection method between the module electrode, the connecting electrode and the terminal electrode nail hole and other conductive materials disclosed in the packaging method disclosed in this disclosure, as well as the light-curing adhesive packaging method, can effectively block the intrusion path of water vapor caused by the connection between the materials.

Fourth, the packaging method disclosed herein further strengthens the area around the terminal electrode nail hole with a photocurable adhesive to improve the deterioration caused by the water and oxygen in the atmospheric environment invading the terminal electrode nail hole area in the prior art.

The packaging method of the flexible organic solar cell module disclosed herein has been subjected to many tests, including accelerated test experiments, and the results have shown that the packaging method disclosed herein can indeed significantly increase the overall service life of the flexible solar cell module.

Of course, the above embodiments are only used for illustration and not to limit the scope of the present disclosure. Any equivalent modification or change of the packaging method of the flexible organic solar cell module according to the above embodiments should still be included in the patent scope of the present disclosure.

In summary, it can be seen that this disclosure has indeed achieved the desired improved effect by breaking through the previous technology, and it is not easy for people familiar with the technology to think of. Its progress and practicality obviously meet the patent application requirements. Therefore, I have filed a patent application in accordance with the law and sincerely request your office to approve this invention patent application to encourage creativity. I really appreciate your kindness.

The above description is for illustrative purposes only and is not intended to be limiting. Any other equivalent modifications or changes that do not depart from the spirit and scope of this disclosure should be included in the scope of the attached patent application.

411: Positive module electrode

412: Negative module electrode

421: Positive connection electrode

422: Negative connection electrode

431: Positive electrode nail hole

432: Negative electrode nail hole

600: Flexible organic solar cell module with terminal electrodes

Claims (10)

A packaging method for a flexible organic solar cell module includes: providing a flexible organic solar cell module, wherein the flexible organic solar cell module further includes a positive module electrode, a negative module electrode, a positive connecting electrode and a negative connecting electrode, wherein the positive connecting electrode and the positive module electrode are connected to each other. The invention relates to a method for preparing a flexible organic solar cell module. The method comprises: providing a flexible organic solar cell module and a negative module electrode; providing two packaging films, the packaging films comprising: an insulating film layer and a pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer being transferred onto the insulating film layer; performing a pressing process, comprising placing the flexible organic solar cell module between the two packaging films. The pressure-sensitive adhesive layers of the two packaging films are respectively overlapped with the upper and lower surfaces of the flexible organic solar cell module and then pressed to form a packaged flexible organic solar cell module; and a nailing step is performed, including nailing holes on the packaged flexible organic solar cell module corresponding to the positive connection. A positive terminal electrode nail hole and a negative terminal electrode nail hole are formed at the positive terminal electrode and the negative terminal electrode respectively to form a flexible organic solar cell module with terminal electrodes, wherein the positive terminal electrode and the negative terminal electrode can be electrically connected to external circuits through the positive terminal electrode nail hole and the negative terminal electrode nail hole respectively. The packaging method of the flexible organic solar cell module of claim 1 further includes a step of implementing a sealing step after the nailing step is implemented, applying a photocurable glue to the gap between the positive electrode nailing hole and the negative electrode nailing hole and the packaging film, and curing it by irradiating light. The packaging method of the flexible organic solar cell module of claim 1 further includes a vacuum heating step before the lamination process is performed, including placing the two packaging films in a vacuum oven and heating them at 100-110 degrees Celsius for at least 8 hours to remove the residual moisture and oxygen content in the barrier film layer and the pressure-sensitive adhesive layer. As in claim 3, the packaging method of the flexible organic solar cell module, wherein the vacuum heating step further includes placing the two packaging films in the vacuum oven and heating them at 105 degrees Celsius for at least 8 hours. The packaging method of the flexible organic solar cell module as claimed in claim 1, wherein the positive module electrode and the negative module electrode are made of a conductive tape. The packaging method of the flexible organic solar cell module as claimed in claim 1, wherein the positive connection electrode and the negative connection electrode are made of a silver wire or a conductive tape. The packaging method of the flexible organic solar cell module as claimed in claim 1, wherein the positive connection electrode and the negative connection electrode are composed of a plurality of silver wires. A packaging method for a flexible organic solar cell module as claimed in claim 6 or 7, wherein the silver wire is formed by evaporation. The packaging method of the flexible organic solar cell module of claim 1, wherein the nailing step includes nailing holes corresponding to the positive connection electrode and the negative connection electrode on the packaged flexible organic solar cell module by a button nailing method and adding the positive terminal electrode nailing hole and the negative terminal electrode nailing hole, so that the positive connection electrode and the negative connection electrode packaged in the packaging film can be electrically connected to the external circuit. A method for connecting a plurality of flexible organic solar modules, comprising: providing a plurality of the packaged flexible organic solar battery modules as described in the packaging method of claim 1, wherein the positive connection electrode and the negative connection electrode each include at least one silver wire; performing a connection step, comprising: arranging the plurality of the packaged flexible organic solar battery modules side by side, bringing the positive connection electrode of one packaged flexible organic solar battery module close to the negative connection electrode of another packaged flexible organic solar battery module, and connecting the packaged flexible organic solar battery modules using a conductive tape. The positive connection electrode of the solar cell module is double-sidedly bonded to the negative connection electrode of another packaged flexible organic solar cell module; a nailing step is performed, including nailing the positive connection electrode of the two ends of the multiple flexible organic solar modules that are not bonded with conductive tape after the connection step is completed. A positive electrode nail hole and a negative electrode nail hole are formed at the positive electrode and the negative electrode respectively, so that the positive electrode and the negative electrode at both ends of the multiple flexible organic solar modules after the connection is completed can be electrically connected to the external circuit through the positive electrode nail hole and the negative electrode nail hole respectively.

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