Carrier film laminating pressing tool

Abstract

The utility model discloses a carrier film laminating hold-down clamp, which is applied to the field of photovoltaic module preparation and comprises a hold-down clamp main body and a flexible contact component, the hold-down device main body comprises a mounting area, and the flexible contact component is arranged in the mounting area; at least part of the flexible contact part protrudes out of the surface of the hold-down tool body, the flexible contact part is integrally formed, and the covering and pressing area of the flexible contact part corresponds to at least one set battery piece. The flexible contact part comprises at least one of a release layer, a tetrafluoroethylene film layer and a soft material film layer which are at least arranged on the surface in contact with the carrier film. According to the utility model, the flexible contact part is integrally formed, and the covering and pressing area of the flexible contact part corresponds to at least one set battery piece, so that the whole surface of the carrier film on the set battery piece can be fixed, and the carrier film can be uniformly fixed on the surface of the battery piece; and at least one of the release layer, the tetrafluoroethylene film layer and the soft material film layer is arranged to be in contact with the carrier film, so that the flexible contact part is conveniently separated from the carrier film.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic module preparation field, especially in kind of carrier film laminating press. BACKGROUND

[0002] Taking 0BB (no main grid) product as an example, the fixing of the solder strip and the cell piece is through the following way in the production process: after the solder strip is laid on the surface of the cell piece, the solder strip and the cell piece are covered by the carrier film, the carrier film is bonded with the cell piece, and then a preliminary fixing of the solder strip is formed, at this time, the solder strip and the cell piece are only physically contacted on the surface. The coating of the solder strip and the silver paste of the cell piece need to be combined through the subsequent laminating process. In the existing 0BB product laminating process, after the carrier film is covered above the cell piece and the solder strip, a press is used to press and fix above the carrier film, and then the carrier film is heated, so as to fix the carrier film. But the carrier film is prone to shrink after being heated, and the current press fixes the carrier film by pointwise pressing in the middle of the solder strip, which causes the carrier film to shrink to the middle after being heated in the laminating stage, resulting in the wrinkle and edge curling of the carrier film edge, and the virtual welding of the cell piece edge after the assembly is laminated.

[0003] Therefore, how to provide a press capable of uniformly fixing the carrier film on the surface of the cell piece and avoiding the virtual welding of the cell piece edge caused by the inward shrinkage of the carrier film after being heated is a technical problem that the person skilled in the art needs to solve urgently. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a carrier film laminating press, which solves the problem that the current press fixes the carrier film by pointwise pressing in the middle of the solder strip, which causes the carrier film to shrink to the middle after being heated in the laminating stage, resulting in the wrinkle and edge curling of the carrier film edge, and the virtual welding of the cell piece edge after the assembly is laminated.

[0005] To solve the above technical problems, the utility model provides a carrier film laminating press, which comprises:

[0006] The press body and the flexible contact component;

[0007] The press body comprises a mounting area, and the flexible contact component is arranged on the mounting area;

[0008] At least part of the flexible contact component protrudes from the surface of the press body, the flexible contact component is integrally formed, and the laminating area of the flexible contact component corresponds to at least one given cell piece;

[0009] The flexible contact component comprises at least one of a release layer, a tetrafluoroethylene film layer and a soft material film layer arranged at least on the surface in contact with the carrier film.

[0010] Optionally, the press body comprises a press crossbar and edge press frames arranged at two ends of the same side of the press crossbar in alignment;

[0011] The mounting area is located between the edge press frames.

[0012] Part of the flexible contact component protrudes from the surface of the edge press frame away from the press crossbar.

[0013] Optionally, the press crossbar is provided in two, and the press crossbar and the edge press frame form the mounting area.

[0014] Optionally, a sealed space is formed in the flexible contact component.

[0015] A heat-conducting sub-component is arranged in the sealed space.

[0016] Optionally, the heat-conducting sub-component is a metal particle or a low specific heat liquid.

[0017] Optionally, a heating resistance wire in contact with the heat-conducting sub-component is further arranged in the sealed space.

[0018] Optionally, the heating resistance wire is an interdigital heating resistance wire.

[0019] Optionally, the sealed space is a switchable sealed space.

[0020] Optionally, the area of the pressing area of the flexible contact component is greater than the area of one predetermined battery piece.

[0021] It can be seen that the carrier film laminating press provided by the present application comprises a press body and a flexible contact component, the press body comprises a mounting area, the flexible contact component is arranged in the mounting area, at least part of the flexible contact component protrudes from the surface of the press body, the flexible contact component is integrally formed and the pressing area thereof corresponds to at least one predetermined battery piece, and the flexible contact component comprises at least one of a release layer, a tetrafluoroethylene film layer and a soft material film layer arranged at least at the surface in contact with the carrier film. The carrier film laminating press comprises the flexible contact component which is integrally formed and the pressing area of which corresponds to at least one predetermined battery piece, so that the carrier film on the predetermined battery piece can be fixed on the whole surface, the flexible contact component can change with the surface shape of the carrier film, the adhesion of the carrier film laminating press and the carrier film is improved, the carrier film is uniformly fixed on the surface of the battery piece, the stability of the carrier film is improved, the phenomenon of virtual welding of the edge of the battery piece caused by the inward shrinkage of the carrier film due to heat is avoided, at least one of the release layer, the tetrafluoroethylene film layer and the soft material film layer is arranged in contact with the carrier film, so that the flexible contact component and the carrier film can be separated. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the provided drawings.

[0023] Figure 1 A carrier film laminating press provided by the embodiment of the present application is a front view structural schematic diagram when the carrier film laminating press is used to laminate the determined battery piece.

[0024] Figure 2 Another carrier film laminating press provided by the embodiment of the present application is a front view structural schematic diagram when the carrier film laminating press is used to laminate the determined battery piece.

[0025] Figure 3 A carrier film laminating press provided by the embodiment of the present application is a plan view structural schematic diagram of the side close to the carrier film.

[0026] Figures 1 to 3 In the drawings, the following notations are used:

[0027] 1-determined battery piece, 2-carrier film, 3-existing carrier film laminating press, 11-press horizontal rod, 12-edge press frame, 20-flexible contact part, 21-sealing space, 22-heating resistance wire, 23-heating resistance wire arranged in interdigital form. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0029] Taking 0BB (no main grid) product as an example, in the production process of the no main grid assembly, the fixation of the welding strip and the battery piece is realized by laying the welding strip on the surface of the battery piece, covering the welding strip and the battery piece with the carrier film, and heating the carrier film to make the carrier film and the battery piece adhere, and then forming a preliminary fixation of the welding strip. At this time, the welding strip and the battery piece are only physically contacted on the surface, and the coating of the welding strip needs to be combined with the silver paste of the battery piece through the subsequent laminating process.

[0030] In the existing 0BB product film covering process, after the carrier film is covered above the battery piece and the solder strip, a press is used to press above the carrier film to pre-fix the carrier film, and then the carrier film is heated to preliminarily fix the carrier film. However, the carrier film is prone to shrink after being heated. The current press is in a point-shaped pressure fixing mode in the middle of the solder strip when fixing the carrier film. Therefore, the carrier film will shrink to the middle after being heated in the film covering stage, and the carrier film will deform due to the point-shaped pressure fixing of the press, especially the edge of the carrier film is prone to wrinkle and curl, which causes the edge of the battery piece to appear virtual welding after the assembly is laminated.

[0031] The utility model discloses a carrier film covering press includes flexible contact component, the flexible contact component is integrated, and its cover pressure area corresponds at least one given battery piece, can carry out the whole surface fixed to the carrier film on the given battery piece, and the flexible contact component that sets up can change along with carrier film surface shape, improve the adhesion of carrier film covering press and carrier film, realize the even fixed carrier film on the surface of battery piece, improve the stability of carrier film pre-fixing, and then avoid the phenomenon that the battery piece edge appears virtual welding due to the heat of carrier film and the inward shrinkage, set up at least one of release layer, tetrafluoroethylene film layer and soft material film layer and contact with carrier film, can facilitate the separation of flexible contact component and carrier film.

[0032] Embodiment 1:

[0033] Please refer to Figure 1 , Figure 1 The utility model discloses a carrier film covering press for the front view structure schematic diagram of given battery piece when carrying out the pressure covering. The carrier film covering press can include:

[0034] Press body and flexible contact component 20;

[0035] The press body includes the installation area, and the flexible contact component 20 is arranged at the installation area;

[0036] At least part of the flexible contact component 20 protrudes from the surface of the press body, and the flexible contact component 20 is integrally formed, and the cover pressure area thereof corresponds to at least one given battery piece 1;

[0037] The flexible contact component 20 includes at least one of release layer, tetrafluoroethylene film layer and soft material film layer arranged at least at the surface in contact with the carrier film.

[0038] The press body in the embodiment is used for bearing and supporting, and is used for bearing the flexible contact component 20, and the pressure covering area of the flexible contact component 20 is used for contacting the carrier film when the carrier film is pressure covered. The press body in the embodiment comprises a mounting area for mounting the flexible contact component 20. In order to facilitate the mounting of the flexible contact component 20 and improve the simplicity of the structure, while ensuring the service life of the carrier film laminating press, the mounting area can be arranged at the side surface of the press body close to the carrier film. It is easy to understand that the side surface of the press body close to the carrier film is the side surface of the press body close to the carrier film when the carrier film laminating press is pre-fixed to the carrier film. The carrier film laminating press in the embodiment is generally used for pre-fixing the carrier film to the OBB battery sheet. In the laminating stage, the welding strip is pre-fixed to the predetermined battery sheet 1 by the carrier film. At this time, the carrier film only has physical contact with the predetermined battery sheet 1.

[0039] In the embodiment, at least part of the flexible contact component 20 protrudes from the surface of the press body. It should be noted that the part of the flexible contact component 20 protruding from the surface of the press body, that is, the pressure covering area of the flexible contact component, should cover at least one predetermined battery sheet 1, so as to ensure that the carrier film laminating press pre-fixes the carrier film on at least one predetermined battery sheet 1, corresponding to one complete flexible contact component 20. Further, the utility model embodiment can separate the flexible contact component 20 from the carrier film after the carrier film is attached to the predetermined battery sheet 1 by arranging at least one film layer of a release layer, a tetrafluoroethylene film layer and a soft material film layer on the surface of the flexible contact component 20 contacting the carrier film, thereby avoiding the problem that the carrier film and the predetermined battery sheet 1 are attached to each other at a low degree due to the adhesion of the flexible contact component 20 and the carrier film and forced separation.

[0040] Further, in order to ensure the stability of the carrier film laminating press pre-fixing the carrier film, the press body can comprise a press cross bar 11, and the edge press frames 12 arranged at the edges of the two ends of the same side of the press cross bar 11.

[0041] The mounting area is located between the edge press frames 12.

[0042] Part of the flexible contact component 20 protrudes from the surface of the edge press frame 12 away from the press cross bar.

[0043] It needs to be explained that in the embodiment, the pressing tool body is provided with the pressing tool cross bar 11 and the edge pressing tool frame 12, and the edge pressing tool frame 12 is arranged on the same side surface of the pressing tool cross bar 11, and can be arranged on the bottom side surface of the pressing tool cross bar 11, and is located in the region opposite to the two ends of the pressing tool cross bar 11. The bottom side surface is the external force generally applied to the carrier film from top to bottom when the existing carrier film laminating pressing tool is working, and the bottom side surface of the carrier film laminating pressing tool is generally arranged in contact with the carrier film. Therefore, in the embodiment, the position relationship corresponding to each component of the carrier film laminating pressing tool is described for the convenience of understanding the scheme by the person skilled in the art, and is not the only feasible scheme of the application. The change of the position and orientation of the structure according to the embodiment of the application should also belong to the protection scope of the application.

[0044] The edge pressing tool frame 12 is arranged at the region opposite to the two ends of the same side of the pressing tool cross bar 11. Correspondingly, in the embodiment, the flexible contact component 20 is arranged in the region between the edge pressing tool frames installed on the pressing tool cross bar 11. In order to ensure the simplicity of the arrangement of the flexible contact component 20, the flexible material generally has flowability, so part of the flexible contact component 20 protrudes from the bottom side surface of the edge pressing tool frame 12, to ensure the convenience of preparation of the flexible contact component 20.

[0045] Further, in a feasible embodiment, on the basis of ensuring the stability of the carrier film laminating pressing tool for pre-fixing the carrier film, the pressing tool cross bar can be provided as two, and the pressing tool cross bar and the edge pressing tool frame form an installation region.

[0046] In a feasible embodiment of the embodiment, the edge pressing tool frame 12 is arranged at the two ends of the same side surface of the pressing tool cross bar 11, and the pressing tool cross bar 11 and the edge pressing tool frame 12 form an installation region. Specifically, in an application scenario, the edge pressing tool frame 12 is arranged at the two ends of the pressing tool cross bar 11 along a first direction, and the pressing tool cross bar 11 includes a first sub-pressing tool cross bar and a second sub-pressing tool cross bar, the first sub-pressing tool cross bar and the second sub-pressing tool cross bar are arranged opposite to each other along a second direction, and a hollow region is formed between the first sub-pressing tool cross bar and the second sub-pressing tool cross bar. The edge pressing tool frame 12, the first sub-pressing tool cross bar and the second sub-pressing tool cross bar form an installation region. The first direction and the second direction are two directions perpendicular to each other, and in the embodiment, the width of the edge pressing tool frame 12 formed along the second direction can be 80-320 mm. Further, in the embodiment, part of the flexible contact component 20 protrudes from the surface of the edge pressing tool frame 12 away from the pressing tool cross bar 11. The part of the flexible contact component 20 protruding from the surface of the edge pressing tool frame 12 away from the pressing tool cross bar 11 corresponds to at least one given battery piece 1.

[0047] The carrier film laminating press provided by the embodiment of the utility model, including press main part and flexible contact component 20, press main part includes installation area, flexible contact component 20 is arranged in installation area, at least part of flexible contact component 20 protrudes from the surface of press main part, flexible contact component 20 is integrally formed and its laminating area corresponds to at least one given battery piece 1, and flexible contact component 20 includes at least one of release layer, tetrafluoroethylene film layer and soft material film layer arranged at least on the surface in contact with carrier film. The utility model discloses a carrier film laminating press including flexible contact component 20, which is integrally formed, and its laminating area corresponds to at least one given battery piece 1, so that the carrier film on the given battery piece 1 can be fixed on the whole surface, and the flexible contact component 20 can change with the surface shape of the carrier film, improve the adhesion of the carrier film laminating press and the carrier film, realize uniform fixing of the carrier film on the surface of the battery piece, improve the stability of the carrier film pre-fixing, and further avoid the phenomenon that the battery piece edge appears virtual welding due to the inward shrinkage of the carrier film under heat, and at least one of release layer, tetrafluoroethylene film layer and soft material film layer is arranged in contact with the carrier film, so that the flexible contact component 20 can be separated from the carrier film.

[0048] In addition, the utility model discloses a press main part including press cross bar 11 and edge press frame 12, and the edge press frame 12 is arranged on the same side surface of the press cross bar 11 and is located in the region opposite to the two ends of the press cross bar 11, so that the stability of the carrier film laminating press in pre-fixing the carrier film is ensured; the edge press frame 12 is arranged at the two ends of the same side surface of the press cross bar 11, and the press cross bar 11 and the edge press frame 12 form the installation area, so that the structural stability of the carrier film laminating press is ensured.

[0049] Embodiment 2:

[0050] Please refer to Figure 2 , Figure 2 The carrier film laminating press provided by the embodiment of the utility model is a front view structural schematic diagram when the given battery piece is laminated. Compared with the embodiment 1, the difference of the carrier film laminating press is that:

[0051] The flexible contact component 20 is formed with a sealed space 21;

[0052] The sealed space 21 is provided with a heat conduction sub-component.

[0053] It needs to be explained that the sealing space 21 is arranged in the flexible contact component 20 in the embodiment, and the heat conduction sub-component is arranged in the sealing space 21, so that heat can be transferred to the carrier film through the heat conduction sub-component when the carrier film is pressed and covered by the carrier film covering press, so that the carrier film is softened by heat, and the carrier film is conveniently pre-fixed with the predetermined battery piece 1. The heat conduction sub-component in the embodiment can be a heat conduction sub-component capable of rapid heating. The heat in the sealing space arranged in the embodiment is not easy to dissipate, and the energy consumption of the equipment can be further reduced. The heat conduction sub-component capable of rapid heating can be a liquid material or a solid fine particle.

[0054] Further, in order to ensure that the heat conduction sub-component can be rapidly heated so as to heat the carrier film in time when the flexible contact component 20 acts on the carrier film, the heat conduction sub-component can be arranged as metal particles or a low specific heat capacity liquid.

[0055] It needs to be explained that the heat conduction sub-component can be arranged as metal particles, or the heat conduction sub-component can be arranged as a low specific heat capacity liquid, so that the heat conduction sub-component can be rapidly heated, and the carrier film is heated in time, and the efficiency of the carrier film covering press for pre-fixing the carrier film is improved.

[0056] Further, in order to further improve the convenience of providing heat to the heat conduction sub-component, a heating resistance wire 22 in contact with the heat conduction sub-component can be further arranged in the sealing space 21.

[0057] In the embodiment, the heating resistance wire 22 arranged in the sealing space 21 is used to heat the heat conduction sub-component, so that the convenience of providing heat to the heat conduction sub-component is ensured. Meanwhile, in the embodiment, the heating resistance wire 22 is arranged in the sealing space 21, so that the flexible contact component 20 can be heated, and the flowability of the flexible contact component 20 is improved, and the adhesion of the flexible contact component 20 to the carrier film is facilitated.

[0058] Further, in order to improve the convenience of heating the heat conduction sub-component, the heating resistance wire 22 can be arranged as a heating resistance wire 23 arranged in an interdigital manner. Figure 3 , Figure 3 The utility model discloses a carrier film covering press's planar structure schematic diagram of one side of carrier film. The heating resistance wire 22 can be arranged as a heating resistance wire 23 arranged in an interdigital manner.

[0059] In the embodiment, the heating resistance wire 22 is arranged as a heating resistance wire 23 arranged in an interdigital manner, so that the heating efficiency of the heat conduction sub-component is further improved.

[0060] Further, in order to improve the functionality of the carrier film covering press, the sealing space can be arranged as a switchable sealing space.

[0061] In the embodiment, the sealing space is set as a switchable sealing space, so that the material or component in the sealing space can be replaced, and the flexible contact component 20 has high flexibility and adaptability.

[0062] Further, in order to ensure the adhesion of the flexible contact component 20 to the carrier film, the area of the laminating region of the flexible contact component 20 is greater than the area of one predetermined battery piece 1.

[0063] It should be noted that, in the embodiment, the area of the laminating region of the flexible contact component 20 is greater than the area of one predetermined battery piece 1, so that the flexible contact component 20 is not tightly attached to the carrier film at the boundary of the predetermined battery piece 1, and thus the carrier film is not stably bonded to the predetermined battery piece 1 at the boundary of the predetermined battery piece 1, and the risk of virtual welding at the edge of the predetermined battery piece 1 is avoided.

[0064] The carrier film laminating press provided in the embodiment of the utility model can realize heat transfer to the carrier film through the heat-conducting sub-component when the carrier film is laminated and pressed by the carrier film laminating press, so that the carrier film is softened by heat and is conveniently pre-fixed to the predetermined battery piece 1. The heat-conducting sub-component can be quickly heated by setting the heat-conducting sub-component as metal particles or a low specific heat capacity liquid, so that the carrier film is heated in time and the efficiency of pre-fixing the carrier film by the carrier film laminating press is improved. The heat-conducting sub-component is heated by the heating resistance wire 22 arranged in the sealing space 21, so that the heat-conducting sub-component is conveniently heated. The heating efficiency of the heat-conducting sub-component is further improved by setting the heating resistance wire 22 as the interdigital heating resistance wire 23. The material or component in the sealing space can be replaced by setting the sealing space as a switchable sealing space, so that the flexible contact component 20 has high flexibility and adaptability. The adhesion of the flexible contact component 20 to the carrier film at the boundary of the predetermined battery piece 1 is improved by setting the area of the laminating region of the flexible contact component 20 to be greater than the area of one predetermined battery piece 1.

[0065] In a feasible embodiment, the carrier film laminating press can include the following structure:

[0066] The press body and the flexible contact component;

[0067] The press body includes a press crossbar, edge press frames arranged at the two ends of the same side of the press crossbar in alignment, the press crossbar is provided in two, and the press crossbar and the edge press frames form an installation region.

[0068] The flexible contact component is arranged at the mounting area, at least part of the flexible contact component protrudes from the surface of the press body, the flexible contact component is integrally formed and the covering area of the flexible contact component corresponds to at least one designated battery piece;

[0069] Part of the flexible contact component protrudes from the surface of the edge press frame away from the press crossbar, and the flexible contact component protrudes from the surface of the edge press frame away from the press crossbar integrally formed and the covering area of the flexible contact component corresponds to 2 to 3 designated battery pieces;

[0070] The flexible contact component comprises at least one of a release layer, a tetrafluoroethylene film layer and a soft material film layer arranged at least at the surface in contact with the carrier film;

[0071] A sealed space is formed in the flexible contact component, a heat conduction sub-component is arranged in the sealed space, and a heating resistance wire in an interdigital arrangement is in contact with the heat conduction sub-component, the heat conduction sub-component is iron sand particles or a low specific heat capacity liquid, and the sealed space is a switchable sealed space.

[0072] It should be noted that in the natural state of the carrier film laminating press, part of the flexible contact component protruding from the press body can form pressure on the carrier film.

[0073] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between each embodiment can be referred to each other.

[0074] In addition, it should be noted that in this paper, relationships such as first and second are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant are intended to cover non-exclusive inclusion.

[0075] The carrier film laminating press provided by the utility model is described in detail above, and the principle and implementation mode of the utility model are described by applying specific examples in this paper. The description of the above embodiments is only used to help understand the method and core idea of the utility model; at the same time, for those skilled in the art, according to the idea of the utility model, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation of the utility model.

Claims

1. A carrier film laminating press, characterized by comprising: The application relates to a pressing device for pressing a plurality of battery pieces, comprising: a pressing device body and a flexible contact component; the pressing device body comprises a mounting area, and the flexible contact component is arranged on the mounting area; at least part of the flexible contact component protrudes from the surface of the pressing device body, the flexible contact component is integrally formed, and the pressing area of the flexible contact component corresponds to at least one intended battery piece; the flexible contact component comprises at least one of a release layer, a tetrafluoroethylene film layer and a soft material film layer arranged at least on the surface in contact with the carrier film.

2. The carrier film lamination press of claim 1, wherein, the pressing device body comprises a pressing device crossbar and edge pressing frames arranged at the two ends of the same side of the pressing device crossbar in alignment; the mounting area is located between the edge pressing frames; part of the flexible contact component protrudes from the surface of the edge pressing frame away from the pressing device crossbar.

3. The carrier film lamination press of claim 2, wherein, the pressing device crossbar is provided in two, and the pressing device crossbar and the edge pressing frame form the mounting area.

4. The carrier film lamination press of claim 1, wherein a sealed space is formed in the flexible contact component; a heat conduction sub-component is arranged in the sealed space.

5. The carrier film lamination press of claim 4, wherein, the heat conduction sub-component is metal particles or a low specific heat capacity liquid.

6. The carrier film lamination press of claim 4, wherein, a heating resistance wire in contact with the heat conduction sub-component is further arranged in the sealed space.

7. The carrier film lamination press of claim 6, wherein, the heating resistance wire is in the form of an interdigital heating resistance wire.

8. The carrier film lamination press of claim 4, wherein, the sealed space is a switchable sealed space.

9. The carrier film lamination press of claim 1, wherein, the area of the pressing area of the flexible contact component is larger than the area of one intended battery piece.

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