Battery string heating and pressing device

Abstract

The utility model discloses a battery string heating and pressing device which comprises a base, a driving part, a flexible deformation conveying belt, a first heating part and a pressing tool, the driving part is arranged on the base, the flexible deformation conveying belt is rotationally connected with the base, the driving end of the driving part is in transmission connection with the flexible deformation conveying belt, and the pressing tool is arranged above the base in a lifting mode and is connected with the first heating part. The flexible deformation conveying belt can bear the battery string, the first heating piece is used for heating the part, located on the flexible deformation conveying belt, of the battery string, and the pressing tool is used for pressing the part, heated by the first heating piece, of the battery string. According to the technical scheme, the problem that the qualified rate is reduced due to the fact that a plurality of shadows appear around the solder strip group when EL detection is carried out after lamination of the photovoltaic module produced by the adhesive film due to the fact that the part, close to the solder strip group, of the adhesive film is not completely attached to generate a gap can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of the preparation of film-covered battery strings, in particular to a battery string heating and pressing device. Background Technique

[0002] When preparing a film-covered battery string, an infrared light first heating element heats the battery cells in the to-be-welded film-covered battery string through infrared light, so that the adhesive films on the opposite sides thereof are melted, and the welding tapes are pasted on the front and back sides of the battery cells through the adhesive films to fix the welding tape group relative to the battery cells. At the same time, the adhesive film is also prone to sticking to the conveying belt when heated. When the film-covered battery string is separated from the belt conveying channel, the adhesive film facing the conveying belt is easily pulled up, resulting in local bulges. Or, the pressing contacts on both sides of the adhesive film facing the conveying belt are both rigid contacts. As Figure 1 shown, a part of the adhesive film near the welding tape group is not completely adhered, resulting in a gap. When the photovoltaic module produced therefrom is subjected to EL detection after lamination, multiple shadows appear around the welding tape group, thereby reducing the qualified rate. Content of the Utility Model

[0003] The purpose of the utility model is to provide a battery string heating and pressing device to solve the problems put forward in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A battery string heating and pressing device includes a base, a driving member, a flexible deformation conveyor belt, a first heating member and a pressing tool. The driving member is arranged on the base. The flexible deformation conveyor belt is rotatably connected to the base. The driving end of the driving member is in transmission connection with the flexible deformation conveyor belt. The pressing tool is arranged above the base in a liftable manner. The flexible deformation conveyor belt can carry the battery string. The first heating member is used for heating a part of the battery string located on the flexible deformation conveyor belt. The pressing tool is used for pressing a part of the battery string after being heated by the first heating member.

[0005] Preferably, the flexible deformation conveyor belt includes a transmission layer and a flexible layer. The flexible layer is wound outside the transmission layer. The transmission layer is rotatably connected to the base. The driving end of the driving member is in transmission connection with the transmission layer.

[0006] Preferably, the flexible layer is wound outside the transmission layer by the engagement of a plurality of teeth and a plurality of tooth grooves with each other.

[0007] Preferably, a plurality of protrusions arranged in an array are provided on the flexible layer.

[0008] Preferably, the first heating member is arranged on the pressing tool. The pressing tool is a light-transmitting pressing tool. The first heating member is an infrared light heating member.

[0009] Preferably, the first heating element is located above the flexible deformable conveyor belt.

[0010] Preferably, a second heating element is further provided in the base, and the second heating element is located below the conveying surface of the flexible deformable conveyor belt.

[0011] Preferably, a cooling element is further provided above the base. In the moving direction of the battery string, the first heating element and the cooling element are arranged in sequence.

[0012] Preferably, a cleaning brush is provided below the base, and the cleaning brush is in contact with the surface of the flexible deformable conveyor belt.

[0013] The technical solution adopted in this application can achieve the following beneficial effects:

[0014] In a battery string heating and pressing device disclosed in this application, a driving member is provided on a base, a flexible deformable conveyor belt is rotatably connected to the base, a driving end of the driving member is in transmission connection with the flexible deformable conveyor belt, a pressing tool is movably provided above the base, the flexible deformable conveyor belt can carry a battery string, a first heating element is used to heat a part of the battery string located on the flexible deformable conveyor belt, and the pressing tool is used to press the part of the battery string heated by the first heating element.

[0015] During the use of the battery string heating and pressing device, the flexible deformable conveyor belt carries the battery string, and the driving member drives the flexible deformable conveyor belt to move step by step, so that the battery string also moves step by step accordingly. In the direction of gravity, the first heating element heats a part of the battery string opposite to it. When the adhesive films on both sides of the battery cells in the part of the battery string are heated to a molten state, the pressing tool descends to press the part of the battery string heated by the first heating element. The pressing tool and the flexible deformable conveyor belt are in extrusion cooperation, and the flexible deformable conveyor belt deforms under pressure, so that the part of the battery string facing one side of the flexible deformable conveyor belt is flexibly wrapped by the flexible deformable conveyor belt, thereby increasing the contact area and performing reverse extrusion, so that the adhesive film around the welding tape in the part of the battery string facing one side of the flexible deformable conveyor belt can be completely adhered. This is beneficial for reducing the shadows around the welding tape group when performing EL detection on the photovoltaic module produced by this battery string after lamination, thereby improving the qualification rate. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0017] Figure 1Partial cross-sectional view of the part where the adhesive film near the solder tape group is not fully adhered in the background art;

[0018] Figure 2 Structural schematic diagram of the support deformation assembly disclosed in the embodiment of the present application;

[0019] Figure 3 Simplified schematic diagram of the docking of the battery string forming device and the battery string heating and pressing device disclosed in the embodiment of the present application;

[0020] Figure 4 is Figure 2 cross-sectional view of.

[0021] In the figure: 100, base; 200, driving member; 300, flexible deformation conveyor belt; 400, first heating member; 500, pressing tool; 600, protrusion; 700, second heating member; 800, cooling member; 900, cleaning brush. Detailed implementation manners

[0022] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] As Figures 2 to 4 shown, the present application discloses a battery string heating and pressing device, and the disclosed battery string heating and pressing device includes a base 100, a driving member 200, a flexible deformation conveyor belt 300, a first heating member 400, and a pressing tool 500, wherein the driving member 200 is a motor, a rotary cylinder, etc., and the present application does not make any restrictions on this.

[0026] Specifically, the driving member 200 is arranged on the base 100, the flexible deformable conveyor belt 300 is rotatably connected to the base 100, the driving end of the driving member 200 is transmission-connected to the flexible deformable conveyor belt 300, the press 500 is liftably arranged above the base 100, the flexible deformable conveyor belt 300 can receive and carry the battery string conveyed from the battery stringing device, the first heating member 400 is used to heat the portion of the battery string located on the flexible deformable conveyor belt 300, and the press 500 is used to press the portion of the battery string heated by the first heating member 400.

[0027] During the use of the battery string heating and pressing device, after the battery string has gone through the welding process of the battery string forming device and the pressing tool 500 pressing itself has been recovered, the flexible deformable conveyor belt 300 carries the battery string, and the driving member 200 drives the flexible deformable conveyor belt 300 to move step by step, so that the battery string also moves step by step, and in the direction of gravity, the first heating member 400 heats the portion of the battery string opposite to it, and when the adhesive films on both sides of the battery cells in the portion of the battery string are heated and in a molten state, the pressing tool 500 descends to press the battery string heated by the first heating member 400. The press 500 is pressed and matched with the flexible deformable conveyor belt 300, and the flexible deformable conveyor belt 300 is deformed by the pressure, so that the part of the battery string facing the side of the flexible deformable conveyor belt 300 is flexibly wrapped by the flexible deformable conveyor belt 300, thereby increasing the contact area and extruding in the opposite direction, so that the adhesive film around the welding tape in the part of the battery string facing the side of the flexible deformable conveyor belt 300 can be completely fitted, which is beneficial to reduce the shadow around the welding tape group during EL testing of the photovoltaic components produced by the battery string after lamination, thereby improving the qualified rate.

[0028] Of course, the disclosed battery string heating and pressing device can also be docked with the discharge end of the battery string stringing device, and the flexible deformable conveyor belt 300 can receive and carry the battery string conveyed from the battery string stringing device. During the use of the battery string heating and pressing device, the battery string has undergone the welding process of the battery string stringing device, and the press 500 pressing itself has been recovered. The driving member 200 drives the flexible deformable conveyor belt 300 to move in steps so that the battery string also moves in steps. The first heating member 400 heats the portion of the battery string opposite to it, and the press 500 descends to press the portion of the battery string heated by the first heating member 400. The press 500 is squeezed and matched with the flexible deformable conveyor belt 300, and the flexible deformable conveyor belt 300 is deformed under pressure so that the portion of the battery string facing the side of the flexible deformable conveyor belt 300 is flexibly wrapped by the flexible deformable conveyor belt 300.

[0029] In the embodiment of the present application, the flexible deformable conveyor belt 300 may include a transmission layer and a flexible layer. Specifically, the flexible layer is wound around the outside of the transmission layer. The transmission layer is rotatably connected to the base 100, and the driving end of the driving member 200 is in transmission connection with the transmission layer. The rolling cooperation between the transmission layer and the base 100 is used to ensure the rotation accuracy of the flexible deformable conveyor belt 300. The flexible layer can be used to realize that part of the side of the flexible battery string facing the flexible deformable conveyor belt 300.

[0030] Of course, both the transmission layer and the flexible layer can be made of high-temperature resistant materials. Specifically, the transmission layer can be a high-temperature resistant Teflon layer, a high-temperature resistant rubber layer, etc., and the present application does not make any restrictions on this. The flexible layer can be a high-temperature resistant silica gel layer, a high-temperature resistant sponge layer, etc., and the present application does not make any restrictions on this.

[0031] In order to avoid the insecure connection between the flexible layer and the transmission layer and the relative displacement during use, in an alternative solution, the flexible layer can be wound around the outside of the transmission layer by the meshing of a plurality of teeth and a plurality of tooth grooves.

[0032] In the embodiment of the present application, a plurality of protrusions 600 arranged in an array can be provided on the flexible layer. The battery string contacts the plurality of protrusions 600, changing from surface contact to line contact or point contact, thereby reducing the contact area between the battery string and the flexible deformable conveyor belt 300, and also avoiding the large-area adhesion between the adhesive film on the side of the battery string facing the flexible deformable conveyor belt 300 after being heated by the first heating member 400 and the flexible deformable belt, which affects the pressing effect of the battery string.

[0033] In addition, the plurality of protrusions 600 can be a plurality of bosses arranged at intervals along the moving direction of the battery string, or a plurality of bosses perpendicular to the moving direction of the battery string, or a group of protruding columns arranged in an array along the moving direction of the battery string. The group of protruding columns can be a plurality of protruding columns perpendicular to the moving direction of the battery string. The present application does not make any restrictions on this.

[0034] In an alternative solution, the first heating member 400 can be provided on the press tool 500. The press tool 500 can be a light-transmitting press tool 500, and the first heating member 400 can be an infrared light heating member. The first heating member 400 can move up and down with the press tool 500, so that the distance between the first heating member 400 and the battery string is convenient to adjust, thereby increasing the irradiation area of the infrared light heating member on the part of the battery string, and also being beneficial to the integrated design of the structure.

[0035] The infrared light heating member can be an infrared heating lamp tube, an infrared heating LED lamp bead, etc., and the present application does not make any restrictions on this.

[0036] In an optional solution, the first heating element 400 is located above the flexible deformable conveyor belt 300, and the first heating element 400 is fixedly arranged to avoid an interaction area between the moving stroke of the first heating element 400 and the lifting stroke of the pressing tool 500, thereby avoiding motion interference between the two.

[0037] In the embodiment of the present application, the disclosed battery string heating and pressing device may further include a second heating element 700 disposed in the base 100 . Specifically, the second heating element 700 and the first heating element 400 are spaced apart in the vertical direction.

[0038] The second heating element 700 is in the on state, and heat can be transferred to the flexible deformable conveyor belt 300 and the battery string part in turn, so that the adhesive films on both sides of the battery cells in the battery string part can be heated and in a molten state, and the press 500 descends to press the battery string part, and the press 500 is squeezed and matched with the flexible deformable conveyor belt 300, and the flexible deformable conveyor belt 300 is deformed by the pressure, so that the part of the battery string facing the side of the flexible deformable conveyor belt 300 is flexibly wrapped by the flexible deformable conveyor belt 300 and squeezed in the opposite direction, so that the adhesive film around the welding belt in the part of the battery string facing the side of the flexible deformable conveyor belt 300 can be completely fitted.

[0039] In addition, the second heating element 700 may be a heating rod, a soldering iron, etc., and this application does not impose any limitation on this.

[0040] In the embodiment of the present application, the disclosed battery string heating and pressing device may further include a cooling member 800 disposed above the base 100. In the moving direction of the battery string, the first heating member 400 and the cooling member 800 are sequentially disposed. The cooling member 800 may cool the heated portion of the battery string so that the adhesive film on both sides of the battery cells in the portion of the battery string can be quickly separated from the molten state, and also prevent the adhesive film from being adhered to the flexible deformation conveyor belt 300.

[0041] In the embodiment of the present application, a cleaning brush 900 is provided below the base 100, and the cleaning brush 900 contacts the surface of the flexible deformable conveyor belt 300. The cleaning brush 900 can clean the surface of the flexible deformable conveyor belt 300, thereby ensuring that no foreign matter (foreign matter refers to dust, residual glue, etc.) appears on the bearing surface of the flexible deformable conveyor belt 300 that carries the battery string.

[0042] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery string heating and pressing device, characterized in that, It includes a base (100), a driving member (200), a flexible deformable conveyor belt (300), a first heating member (400) and a pressing tool (500). The driving member (200) is arranged on the base (100). The flexible deformable conveyor belt (300) is rotationally connected to the base (100). The driving end of the driving member (200) is in transmission connection with the flexible deformable conveyor belt (300). The pressing tool (500) is arranged above the base (100) in a liftable manner. The flexible deformable conveyor belt (300) can carry a battery string. The first heating member (400) is used to heat a part of the battery string located on the flexible deformable conveyor belt (300). The pressing tool (500) is used to press the part of the battery string heated by the first heating member (400).

2. The battery string heating and pressing device according to claim 1, wherein The flexible deformable conveyor belt (300) includes a transmission layer and a flexible layer. The flexible layer is wound around the outside of the transmission layer. The transmission layer is rotationally connected to the base (100). The driving end of the driving member (200) is in transmission connection with the transmission layer.

3. The battery string heating and pressing device according to claim 2, wherein The flexible layer is wound around the outside of the transmission layer by meshing a plurality of teeth and a plurality of tooth grooves with each other.

4. The battery string heating and pressing device according to claim 2, characterized in that, A plurality of protrusions (600) arranged in an array are provided on the flexible layer.

5. The battery string heating and pressing device according to claim 1, wherein, The first heating member (400) is arranged on the pressing tool (500). The pressing tool (500) is a light-transmitting pressing tool (500). The first heating member (400) is an infrared light heating member.

6. The battery string heating and pressing device according to claim 1, wherein The first heating member (400) is located above the flexible deformable conveyor belt (300).

7. The battery string heating and pressing device according to claim 5 or 6, characterized in that It further includes a second heating member (700) arranged in the base (100). The second heating member (700) is located below the conveying surface of the flexible deformable conveyor belt (300).

8. The battery string heating and pressing device according to claim 5 or 6, characterized in that, It further includes a cooling member (800) arranged above the base (100). In the moving direction of the battery string, the first heating member (400) and the cooling member (800) are arranged in sequence.

9. The battery string heating and pressing device according to claim 1, characterized in that A cleaning brush (900) is arranged below the base (100). The cleaning brush (900) is in contact with the surface of the flexible deformable conveyor belt (300).

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