Solar cell module and method for manufacturing a solar cell module

Abstract

The present invention provides a solar cell module and a method for manufacturing a solar cell module that enable good bonding between busbars and conductive terminals by heating, using a simple configuration without the need for jigs or other fixtures. [Solution] The solar cell module comprises a solar cell panel 2 having solar cells, a busbar 4 for extracting power generated by the solar cells, and a terminal box 10 including conductive terminals 12 joined to the busbar 4. The solar cell panel 2 has a heat-resistant protective sheet 2c on the surface on which the terminal box 10 is located, the busbar end 4a of the busbar 4 is in contact with the protective sheet 2c, and the conductive terminals 12 and the busbar end 4a of the busbar 4 form a joint portion 6 that is joined by heating.

Description

Technical Field

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[0001] The present disclosure relates to a solar cell module and a method for manufacturing the solar cell module.

Background Art

[0002] A solar cell module used for solar power generation includes a solar cell panel and a terminal box. The solar cell panel generates electricity by photoelectric conversion of a plurality of solar cells (for example, perovskite solar cells) disposed therein. The generated electric power is output from the solar cell panel by a pair of bus bars made of conductive plate materials or rod materials. Each of the pair of bus bars is electrically connected to each of a pair of conductive terminals disposed inside the terminal box. The terminal box is provided for relaying a pair of bus bars drawn therein and outputting electric power to one end of a cable. The other end of the cable is connected to the terminal box of another solar cell module. When the solar cell is a thin perovskite solar cell, the terminal box is generally disposed on the surface of the solar cell panel.

[0003] Patent Document 1 discloses a solar cell module and a terminal box. The electric power generated by the solar cells of the solar cell module is taken out to the outside of the solar cell module by bus bars (output lead wires in Patent Document 1). The bus bars are drawn out from the solar cell module main body and drawn into the terminal box. Inside the terminal box, the bus bars are electrically connected to conductive terminals (terminal plates in Patent Document 1) by heating (for example, soldering).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In Patent Document 1, the central part of the conductive terminal is supported by the terminal board fixing part, but the ends are not supported by anything. The heating point of the busbar and conductive terminal is the end of the conductive terminal, and in order to heat stably, it is necessary to support the busbar and conductive terminal. However, if the busbar and conductive terminal are supported by a jig, the heat during heating is conducted to the jig, which prolongs the heating process and may degrade the quality of the joint due to heating. Thus, there was room for improvement in the heating-based bonding of busbars and conductive terminals in solar cell modules.

[0006] Therefore, there is a need for a solar cell module and a method for manufacturing a solar cell module that can achieve good bonding between busbars and conductive terminals by heating with a simple configuration without the use of jigs or other fixtures. [Means for solving the problem]

[0007] One embodiment of the solar cell module according to this disclosure comprises a solar cell panel having solar cells, a busbar for extracting power generated by the solar cells, and a terminal box including conductive terminals joined to the busbar, wherein the solar cell panel has a heat-resistant protective sheet on the surface on which the terminal box is located, the busbar ends of the busbars are in contact with the protective sheet, and the conductive terminals and the busbar ends of the busbars constitute a joint portion joined by heating.

[0008] In the solar cell module according to this embodiment, the ends of the busbars are positioned so as to be in contact with a heat-resistant protective sheet, and the conductive terminals are positioned so as to be in contact with the sheet. Therefore, there is no need to support the busbar ends or conductive terminals with jigs or the like, and the positioning and fixing of the busbar ends and conductive terminals can be done in a simple way by pressing a bonding tool used for bonding by heating against the conductive terminals, and bonding of the busbars and conductive terminals can be performed by heating in that state. In this way, a solar cell module has been obtained that can perform good bonding of busbars and conductive terminals by heating with a simple configuration without using jigs or the like. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram showing the configuration of a solar cell module. [Figure 2] This is a cross-sectional view of a solar panel. [Figure 3] This is a perspective view of the terminal box. [Figure 4] This is a cross-sectional view showing the joint between the conductive terminal and the busbar according to the first embodiment. [Figure 5] This is a cross-sectional view showing the joint between the conductive terminal and the busbar according to the second embodiment. [Figure 6] This is a cross-sectional view showing the joint between the conductive terminal and the busbar according to the third embodiment. [Modes for carrying out the invention]

[0010] Hereinafter, embodiments of the solar cell module and the method for manufacturing the solar cell module according to this disclosure will be described in detail with reference to the drawings. The embodiments described below are illustrative examples for explaining the solar cell module and the method for manufacturing the solar cell module according to this disclosure, and do not limit the solar cell module and the method for manufacturing the solar cell module to these embodiments only. Therefore, the solar cell module and the method for manufacturing the solar cell module according to this disclosure can be implemented in various forms without departing from the gist of the disclosure.

[0011] [First Embodiment] [Solar cell module configuration] A solar cell module 1 according to the first embodiment will be described with reference to Figures 1 to 4. As shown in Figure 1, the solar cell module 1 is composed of a solar cell panel 2 having a plurality (three in this embodiment) of solar cells 2a, a pair of busbars 4, and a terminal box 10.

[0012] In this embodiment, the solar cell 2a is, for example, a perovskite solar cell (see Figure 2). The solar panel 2 generates a desired amount of power by connecting multiple solar cells 2a in series or parallel. As shown in Figure 2, the solar panel 2 comprises a solar cell 2a, a encapsulant 2b, a first sheet 2c (an example of a protective sheet), and a second sheet 2d. The solar cell 2a is encapsulated by the encapsulant 2b and sandwiched between the first sheet 2c and the second sheet 2d, which are located on either side of the encapsulant 2b. In the solar panel 2, the first sheet 2c is located on the outermost surface, which is the side that is irradiated by sunlight, and the second sheet 2d is located on the innermost surface. Since the configuration of the solar cell 2a is well known, a detailed explanation is omitted.

[0013] The sealing material 2b is made of a material mainly composed of silicone, for example. The first sheet 2c is generally called a protective sheet and is made of a heat-resistant resin material, such as a fluororesin. The first sheet 2c and the sealing material 2b are preferably transparent because sunlight can enter them. The second sheet 2d is generally called a back sheet. The second sheet 2d is made of a material mainly composed of silicone, similar to the sealing material 2b.

[0014] Each of the pair of busbars 4 is made of a highly electrically conductive metal such as a copper alloy, and extracts and outputs the power generated by the solar cell panel 2, inputting this power to the terminal box 10. The busbars 4 are drawn out from the solar cell 2a with one end electrically connected to the solar cell 2a, and extend along the outer edge of the solar cell panel 2 between the first sheet 2c and the second sheet 2d. The other end of the busbars 4 is exposed on the first sheet 2c at a point where it overlaps with the terminal box 10, or just before it overlaps with the terminal box 10, when viewed along the direction of sunlight irradiation, as shown in Figure 3. Hereinafter, the other end of the busbars 4 exposed on the first sheet 2c will be referred to as the connection end 4a (an example of a busbar end).

[0015] The connection end 4a is exposed and in contact with the first sheet 2c, and at least a portion of the connection end 4a overlaps with the terminal box 10 when viewed along the direction of sunlight irradiation. The connection end 4a of the busbar 4 is electrically connected to a conductive terminal 12 located inside the terminal box 10 (see Figures 3 and 4). The terminal box 10 is provided to output power to one end of the cable 17 by relaying a pair of busbars 4 through a pair of conductive terminals 12. The cable 17 is electrically connected to the conductive terminal 12 by a method such as soldering. The other end of the cable 17 is connected to the terminal box 10 of another solar cell module 1.

[0016] As described above, the solar cell 2a of the present embodiment is a perovskite solar cell. The perovskite solar cell is thin. Therefore, in the present embodiment, in order to make the solar cell module 1 thin by taking advantage of this feature, the terminal box 10 is arranged close to the outer edge of the solar cell panel 2 (see FIG. 1).

[0017] 〔Configuration of Terminal Box〕 As shown in FIGS. 3 and 4, the terminal box 10 includes a pair of conductive terminals 12, a bypass diode 16, and a case 18 and a cover 19 that house them. The terminal box 10 is arranged on the side of the first sheet 2c of the solar cell panel 2. In other words, the first sheet 2c is arranged on the side where the terminal box 10 is arranged. Since the inside of the terminal box 10 has a structure that is line-symmetric with respect to the bypass diode 16, only the structure on one side with respect to the bypass diode 16 is shown in FIG. 4.

[0018] The conductive terminal 12 is a rectangular plate made of a metal with high electrical conductivity and thermal conductivity such as a copper alloy. The conductive terminal 12 has a bus bar connection portion 13 (an example of an extended portion) to which the bus bar 4 is electrically connected, a cable connection portion 14 to which the cable 17 is connected, and a diode connection portion 15 to which the bypass diode 16 is electrically connected. The cable connection portion 14, the bus bar connection portion 13, and the diode connection portion 15 are arranged along the long side of the conductive terminal 12 in this order. The conductive terminal 12 is arranged in a posture where the plate surface is parallel to the surface of the solar cell panel 2.

[0019] The pair of conductive terminals 12 are housed inside the case 18 and are supported by a plurality (in this embodiment, four for each conductive terminal 12) of support posts 18b erected from the bottom surface 18a of the case 18. The conductive terminals 12 are not fixed to the support posts 18b and are supported (placed) in a state where they can move in a direction away from the support posts 18b. The pair of conductive terminals 12 are supported in a state where the respective diode connection portions 15 are close to each other and are spaced apart from the bottom surface 18a of the case 18. Note that the movement of the conductive terminals 12 in a direction parallel to the plate surface is restricted by a restricting member (not shown) provided inside the case 18.

[0020] The bus bar connection portion 13 of the conductive terminal 12 is formed by cutting and raising the central portion of the conductive terminal 12 into a rectangular shape. Specifically, the bus bar connection portion 13 is cut and raised in a direction perpendicular to the plate surface of the conductive terminal 12 toward the bottom surface 18a of the case 18 in a state where the side closer to the diode connection portion 15 is connected. The connection end 13a (an example of an extended end portion) of the bus bar connection portion 13 is further bent by 90 degrees so as to extend parallel to the plate surface of the conductive terminal 12 toward the cable connection portion 14 side. Since the processing of the bus bar connection portion of the conductive terminal 12 is performed by press working of a press machine, a conductive terminal 12 having a high-precision bending position and bending angle can be obtained.

[0021] The connection end 13a of the bus bar connection portion 13 is in contact with the connection end 4a of the bus bar 4 drawn out from the solar cell panel 2 in a state where the conductive terminal 12 is supported by the support posts 18b of the case . In this state, by a method of joining by heating such as soldering or welding, the connection end 4a of the bus bar 4 and the connection end 13a of the bus bar connection portion 13 of the conductive terminal 12 are joined and integrated so as to establish an electrical connection, and a joint portion 6 is formed. In this embodiment, the connection end 4a and the connection end 13a are connected by solder 5 (see FIGS. 3 and 4). Hereinafter, "joining" means a state where they are mechanically integrated and electrically connected.

[0022] The bypass diode 16 has a diode body 16a made of a P-type semiconductor and an N-type semiconductor, and a pair of lead wires 16b connected to the P-type semiconductor and the N-type semiconductor of the diode body 16a, respectively. Each of the pair of lead wires 16b of the bypass diode 16 is electrically connected to the respective diode connection portions 15 of the pair of conductive terminals 12 by a method such as soldering (soldering is not shown).

[0023] [Method of manufacturing solar cell modules] Next, the manufacturing method of the solar cell module 1 will be described. In this embodiment, only the method related to the connection between the busbar 4 and the busbar connection portion 13 of the terminal box 10 will be described. Since the other steps are known, a detailed explanation will be omitted.

[0024] First, one end of each of the pair of busbars 4 is electrically connected to the solar cell 2a, and the other end (the end on the connection end 4a side) is bent 90 degrees in advance relative to the light-receiving surface (the surface that is irradiated with sunlight) of the solar cell 2a, and the solar cell 2a is sealed with the sealing material 2b in this state. As a result, the busbars 4 are positioned inside or adjacent to the sealing material 2b. Next, the first sheet 2c and the second sheet 2d are positioned to sandwich the solar cell 2a and the sealing material 2b. At this time, the connection end 4a of the busbar 4 is erected perpendicular to the sheet surface of the first sheet 2c and penetrates the first sheet 2c. Then, the connection end 4a is bent 90 degrees by a known method and positioned so that the connection end 4a is in contact with the first sheet 2c (busbar positioning step).

[0025] Next, the terminal box 10, with a pair of conductive terminals 12 supported by the support columns 18b of the case 18, is placed on the first sheet 2c so that the connection end 13a of the busbar connection section 13 overlaps and contacts the connection end 4a of the busbar 4. At this time, a bypass diode 16 is placed between the pair of conductive terminals 12, each of which is electrically connected to the diode connection section 15. In this state, a joining tool (not shown) (a tool that mechanically and electrically joins objects by heating, such as a soldering iron or welding electrodes) is pressed against the connection end 13a. This positions and fixes the connection end 13a and the connection end 4a in close contact. Next, heat is applied to the connection end 13a and the connection end 4a with the joining tool to join them (joining process).

[0026] [Effects and benefits of solar cell modules] In the solar cell module 1 of this embodiment, the connection end 4a of the busbar 4 is positioned to contact the first sheet 2c made of heat-resistant resin, and the connection end 13a of the busbar connection portion 13 of the conductive terminal 12 is positioned to contact the busbar connection end 4a. Therefore, there is no need to support the connection end 4a or the conductive terminal 12 with a jig or the like, and the connection end 4a and the connection end 13a can be positioned and fixed by a simple method of pressing a joining tool used for joining by heating against the connection end 13a, and the connection end 4a and the connection end 13a can be joined by heating in that state.

[0027] Furthermore, at this time, the conductive terminal 12 is supported in a state that it can move away from the support column 18b of the case 18, so when the joining tool is pressed against the connecting end 13a, the conductive terminal 12 can move (lift up) away from the support column 18b. With this configuration, compared to the case where the conductive terminal 12 is fixed to the support column 18b and the joining tool is pressed against the connecting end 13a, the stress generated in the joining area 6 including the connecting end 13a and solder can be reduced, and residual stress on the connecting ends 4a and 13a after joining can be reduced.

[0028] Furthermore, in this embodiment, since the connecting end 4a of the busbar 4 is in contact with the first sheet 2c, there is no need to separately prepare a jig to support and fix the connecting end 4a in the gap, compared to the case where the connecting end 4a is arranged to have a gap between it and the first sheet 2c. Also, if the jig were made of metal, the resin first sheet 2c in this embodiment has a lower thermal conductivity than the jig, and the heat applied from the joining tool is less likely to be released from the first sheet 2c, thus suppressing a decrease in the quality of the joint due to insufficient heat during heating and preventing the heating time from becoming prolonged. In addition, since the first sheet 2c is heat resistant, there is no risk of it melting due to the heat applied by the joining tool.

[0029] Furthermore, in the solar cell module 1 of this embodiment, instead of the busbar 4, a conductive terminal 12 that is relatively smaller than the busbar 4 is processed with high precision by press working to form the busbar connection portion 13 including the connection end 13a. Therefore, the positioning of the connection end 4a and the connection end 13a can be performed with high precision without having to precisely control the processing accuracy of the busbar 4, including bending.

[0030] [Second Embodiment] Next, the solar cell module 1 according to the second embodiment will be described with reference to Figure 5. In this embodiment, the shape of the busbar connection portion 13 differs from that of the first embodiment. Otherwise, it has the same configuration as the first embodiment. Therefore, in the description of this embodiment, the same reference numerals are used for parts with the same configuration as the first embodiment, and detailed explanations of similar configurations are omitted. In addition, in Figure 5, as in Figure 4, only the structure of one side of the bypass diode 16 is illustrated.

[0031] As shown in Figure 5, in the solar cell module 1 of this embodiment, the busbar connection portion 13 (including the connection end 13a) of the conductive terminal 12 of the terminal box 10 is not cut and bent, and a part of the plate-shaped conductive terminal 12 becomes the busbar connection portion 13. Specifically, an opening 13c is formed on the side of the cable connection portion 14 from the connection end 13a of the busbar connection portion 13. When the connection end 13a of the busbar connection portion 13 of the conductive terminal 12 is placed on the connection end 4a of the busbar 4, the connection end 4a is visible through the opening 13c, and the connection end 13a and the connection end 4a are in contact. In this state, the connection end 13a and the connection end 4a can be joined by pressing the connection end 13a with a joining tool and heating it.

[0032] In the solar cell module 1 of this embodiment, the busbar connection portion 13 is not cut and the conductive terminal 12 remains in a plate shape, so the height of the terminal box 10 can be reduced compared to the configuration of the first embodiment.

[0033] [Third Embodiment] Next, the solar cell module 1 according to the third embodiment will be described with reference to Figure 6. In this embodiment, the shape of the busbar connection portion 13 differs from that of the first and second embodiments. Otherwise, it has the same configuration as the first and second embodiments. Therefore, in the description of this embodiment, the same reference numerals are used for parts with the same configuration as in the first and second embodiments, and detailed explanations of similar configurations are omitted. In addition, in Figure 6, as in Figures 4 and 5, only the structure of one side of the bypass diode 16 is illustrated.

[0034] As shown in Figure 6, in the solar cell module 1 of this embodiment, similar to the second embodiment, the busbar connection portion 13 (including the connection end 13a) of the conductive terminal 12 of the terminal box 10 is not cut and bent, and a part of the plate-shaped conductive terminal 12 becomes the busbar connection portion 13. Specifically, a connection projection 13b is formed on the connection end 13a of the busbar connection portion 13, which is bent to protrude toward the connection end 4a. The connection projection 13b is a part of the connection end 13a. The connection projection 13b is formed over the entire short side (width) direction of the conductive terminal 12. An opening 13c is formed on the side of the busbar connection portion 13b toward the cable connection portion 14. When the connection end 13a (connection projection 13b) of the busbar connection portion 13 of the conductive terminal 12 is placed on the connection end 4a of the busbar 4, the connection end 4a is visible through the opening 13c, and the connection projection 13b is in contact with the connection end 4a. In this state, the connection end 13a and the connection end 4a can be joined by pressing the connection end 13a against it with a joining tool and heating it.

[0035] In the solar cell module 1 of this embodiment, the busbar connection portion 13 is not cut and bent, so the height of the terminal box 10 can be reduced compared to the configuration of the first embodiment. Also, since the connection projection 13b is in contact with the connection end 4a of the busbar 4, the heat applied by the joining tool is concentrated on the connection projection 13b. Therefore, even with a small amount of heat applied, the connection end 13a and the connection end 4a can be joined. Furthermore, even if the thickness of the bypass diode 16 (length in the direction perpendicular to the plate surface of the conductive terminal 12) is the same as that of the first embodiment (see Figure 4), which is thicker than that of the second embodiment (see Figure 5), it can still be used by appropriately setting the protrusion amount of the connection projection 13b.

[0036] [Other Embodiments] (1) In the first embodiment described above, the busbar connection portion 13 was formed by cutting and bending the conductive terminal 12 at a 90-degree angle relative to the plate surface, but it is not limited to this. The busbar connection portion 13 may be configured to be inclined with respect to the plate surface of the conductive terminal 12 at an angle of 45 degrees or 60 degrees, rather than 90 degrees.

[0037] (2) In the third embodiment described above, a connecting projection 13b is formed on the connecting end 13a of the busbar connection portion 13, but the invention is not limited thereto. Instead of the connecting projection 13b, the busbar connection portion 13 may be bent 90 degrees relative to the plate surface of the conductive terminal 12, and the end of the bent portion may be pressed against the connecting end 4a of the busbar 4 as the connecting end 13a.

[0038] (3) In each of the above embodiments, the connecting end 4a of the busbar 4 was formed by bending the end of the busbar 4, but it is not limited to this. The connecting end 4a may be made of a separate component from the busbar 4 and joined to the busbar 4 by methods such as soldering or welding.

[0039] In the solar cell module 1 and the method for manufacturing the solar cell module 1 described in the above embodiment, the following configuration can be envisioned.

[0040] <1> One embodiment of the solar cell module (1) comprises a solar cell panel (2) having solar cells (2a), a busbar (4) for extracting power generated by the solar cells (2a), and a terminal box (10) including conductive terminals (12) joined to the busbar (4). The solar cell panel (2) has a heat-resistant protective sheet (2c) on the surface on which the terminal box (10) is located, the busbar end (4a) of the busbar (4) is in contact with the protective sheet (2c), and the conductive terminal (12) and the busbar end (4a) of the busbar (4) constitute a joint portion (6) that is joined by heating.

[0041] In the solar cell module (1) according to this embodiment, the busbar end (4a) of the busbar (4) is positioned so as to be in contact with a heat-resistant protective sheet (2c), and the conductive terminal (12) is positioned so as to be in contact with the busbar end (4a) and the conductive terminal (12). Therefore, there is no need to support the busbar end (4a) or the conductive terminal (12) with a jig or the like, and the positioning and fixing of the busbar end (4a) and the conductive terminal (12) can be done by pressing a bonding tool used for bonding by heating against the conductive terminal (12) in a simple manner, and the busbar (4) and the conductive terminal (12) can be bonded by heating in that state. In this way, a solar cell module (1) has been obtained that can perform good bonding by heating between the busbar (4) and the conductive terminal (12) with a simple configuration without using a jig or the like.

[0042] <2> the above <1> In the solar cell module (1) described above, the terminal box (10) further comprises a case (18) that houses conductive terminals (12) inside, and preferably the conductive terminals (12) are supported in the case (18) so as to be movable in a direction perpendicular to the surface of the solar cell panel (2).

[0043] In this embodiment, the conductive terminal (12) is supported by the case (18) in a state that it can move in a direction perpendicular to the surface of the solar cell panel (2). Therefore, when the joining tool is pressed against the conductive terminal (12), the conductive terminal (12) can move (lift up) in a direction perpendicular to the surface of the solar cell panel (2). With this configuration, compared to the case in which the conductive terminal (12) is fixed to the case (18) and the joining tool is pressed against the conductive terminal (12), the stress generated in the joining area (6), including the conductive terminal (12) and solder (5), can be reduced, and residual stress between the conductive terminal (12) and the busbar (4) after joining can be reduced.

[0044] <3> the above <1> or <2> In the solar cell module (1) described above, it is preferable that the conductive terminal (12) has an extension (13) toward the busbar (4), and that the extension end (13a) of the extension (13) constitutes a joint portion (6).

[0045] According to this embodiment, since the conductive terminal (12) has an extension (13) that extends toward the busbar (4), the busbar end (4a) and the conductive terminal (12) can be positioned and fixed by pressing the joining tool against the extended end (13a) of the extension (13) rather than the entire conductive terminal (12). Then, by heating in that state and joining the busbar end (4a) and the extended end (13a), the busbar (4) and the conductive terminal (12) can be joined.

[0046] <4> the above <1> from <3> One embodiment of the method for manufacturing a solar cell module (1) as described in any one of the above includes a busbar placement step of arranging the busbar (4) so ​​that the busbar end (4a) of the busbar (4) is in contact with a protective sheet (2c), and a bonding step of heating the conductive terminal (12) with the busbar end (4a) of the busbar (4) in contact with the conductive terminal (12) to bond the conductive terminal (12) to the busbar (4).

[0047] In this embodiment, the busbar end (4a) of the busbar (4) is positioned in the busbar positioning step so as to be in contact with the heat-resistant protective sheet (2c). Then, in the joining step, the conductive terminal (12) is positioned so as to be in contact with the busbar end (4a), and the conductive terminal (12) is joined to the busbar (4) by heating with a joining tool. In this way, the busbar (4) and the conductive terminal (12) can be joined by a simple method of pressing the joining tool used for joining by heating against the conductive terminal (12) without supporting the busbar end (4a) or the conductive terminal (12) with a jig or the like. [Industrial applicability]

[0048] This disclosure is applicable to solar cell modules and methods for manufacturing solar cell modules. [Explanation of Symbols]

[0049] 1: Solar cell module, 2: Solar cell panel, 2a: Solar cell, 2c: First sheet (protective sheet), 4: Busbar, 4a: Connection end (busbar end), 6: Joint area, 10: Terminal box, 12: Conductive terminal, 13: Busbar connection part (extension), 13a: Connection end (extension end), 18: Case

Claims

1. A solar panel having solar cells, A busbar for extracting the electricity generated by the aforementioned solar cell, The terminal box includes conductive terminals connected to the busbar, The solar cell panel has a heat-resistant protective sheet on the surface on which the terminal box is located. The busbar end of the busbar is in contact with the protective sheet. A solar cell module in which the conductive terminal and the busbar end of the busbar form a joint portion that is joined by heating.

2. The terminal box further comprises a case for housing the conductive terminals inside, The solar cell module according to claim 1, wherein the conductive terminal is supported in the case in such a manner that it can move in a direction perpendicular to the surface of the solar cell panel.

3. The conductive terminal has an extension toward the busbar, The solar cell module according to claim 2, wherein the extended end of the extended portion constitutes the joint portion.

4. A method for manufacturing a solar cell module according to any one of claims 1 to 3, A busbar placement step involves arranging the busbar so that the busbar end of the busbar is in contact with the protective sheet, A method for manufacturing a solar cell module, comprising a bonding step of heating the conductive terminal and the busbar end of the busbar while they are in contact, thereby bonding the conductive terminal to the busbar.

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