Gluing equipment

Abstract

The utility model relates to the field of photovoltaic cells, in particular to gluing equipment which is applied to gluing of a battery piece, the battery piece is provided with a gluing area, the gluing equipment comprises a carrier, the carrier comprises a base, a plurality of adhesive tapes and a plurality of adhesive tapes, and the transfer printing piece is connected to the base, and the transfer printing piece is arranged corresponding to the gluing area, so that glue located on the transfer printing piece can be transferred to the gluing area. The technical problem that welding equipment and the technology are complex is solved, and the technical effect of simplifying the machining technology is achieved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cells, and in particular to a glue coating device. Background Art

[0002] With the development of photovoltaic technology, in order to improve the power conversion efficiency of solar cells, processing equipment for solar cells has emerged.

[0003] In the prior art, solar cells are interconnected by welding tapes. First, the welding tapes need to be welded on the flat solar cells. Therefore, the welding tapes need to be arranged on the surface of the solar cells, and after heating and curing, the welding between the welding tapes and the solar cells is completed. The steps of welding the welding tapes include pulling the welding tapes, cutting the welding tapes, transferring the welding tapes, arranging and placing the welding tapes, and the welding process steps of the welding tapes. The welding tapes themselves are flexible and have a small diameter. After the welding tapes are cut, the welding tapes are transferred and arranged by manipulators. Therefore, multiple sets of clamping structures need to be set for the manipulators clamping the welding tapes to achieve the clamping of multiple sets of welding tapes, resulting in a bloated and complex structure and related processes of the welding equipment and an increase in cost.

[0004] Therefore, the technical problem of the prior art is that the welding equipment and process are complex. Summary of the Utility Model

[0005] The present application provides a glue coating process, a glue coating device, and a solar cell processing process, which solve the technical problem of complex welding equipment and process, and achieve the technical effect of simplifying the processing process.

[0006] In a first aspect, a glue coating process provided by the present application adopts the following technical solution:

[0007] A glue coating process applied to solar cells includes: presetting a glue coating area, the glue coating area is located on the solar cell, the glue coating area is arranged as a straight line, and multiple sets of the glue coating areas are arranged side by side; providing a colloid, the colloid is electrically conductive; making the colloid a fluid, and the colloid is arranged along the glue coating area to form a glue film; making the glue film a solid.

[0008] Preferably, multiple sets of the glue coating areas are parallel to each other and arranged at equal intervals.

[0009] Preferably, the glue film is used for bonding with the welding tape, and the width of the glue film is less than or equal to the width of the welding tape.

[0010] Preferably, the statement that "the colloid is arranged along the glue application area to form a glue film" includes: the colloid is screen-printed on the battery cell along the glue application area to form the glue film; the colloid is transferred onto the battery cell along the glue application area to form the glue film; the colloid is 3D printed on the battery cell along the glue application area to form the glue film; or the colloid is sprayed on the battery cell along the glue application area to form the glue film.

[0011] Preferably, the statement that "the colloid is transferred onto the battery cell along the glue application area to form the glue film" includes: providing a carrier, the carrier having a transfer member, the transfer member being arranged in a straight line, multiple sets of the transfer members being provided and arranged in parallel, the transfer member being correspondingly arranged with the glue application area; making the transfer member have the colloid thereon; and bringing the carrier close to the battery cell so that the transfer member is in corresponding contact with the glue application area.

[0012] In a second aspect, a glue application device provided by the present application adopts the following technical solutions:

[0013] A glue application device for applying glue to a battery cell, the battery cell having a glue application area, the glue application area being arranged in a straight line, multiple sets of the glue application areas being provided and arranged in parallel, the glue application device comprising: a glue pool for storing glue; a carrier comprising: a base; and a transfer member connected to the base, multiple sets of the transfer members being provided corresponding to the glue application area so that the colloid on the transfer member can be transferred onto the glue application area.

[0014] Preferably, the transfer member is a convex strip, the convex strip having a transfer portion, multiple transfer portions being used for cooperating with the glue application area to transfer the colloid onto the glue application area, and multiple transfer portions being located in a first plane.

[0015] Preferably, it further comprises: a battery holder, the battery holder being movable relative to the transfer member, the battery holder having a bearing surface for bearing the battery cell, the bearing surface being located in a second plane, and the second plane being parallel to the first plane.

[0016] Preferably, the transfer member is a wire body, at least two sets of the bases being provided, the wire body being connected between the bases to form a wire mesh, the wire mesh being used for cooperating with the glue application area to transfer the colloid onto the glue application area.

[0017] Preferably, it further comprises: a battery holder, the battery holder being movable relative to the transfer member, the battery holder having a bearing surface for bearing the battery cell, the bearing surface being arranged as a plane or a convex arc surface.

[0018] Preferably, the glue pool has a tank body for containing glue, and at least part of the transfer member can enter the tank body to contact the glue, wherein the depth of the tank body is less than the thickness of the transfer member.

[0019] Preferably, the tank body has an opening located in a third plane. The glue pool further includes a squeegee for scraping the glue. The squeegee has a degree of freedom of movement so that the squeegee can scrape the glue flat relative to the opening.

[0020] In a third aspect, a battery cell processing process provided by the present application adopts the following technical solution:

[0021] A battery cell processing process includes: after the battery cell is coated with glue by the above-mentioned glue coating process, the glue film has adhesiveness to bond the welding tape.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] By presetting a glue coating area on the battery cell, setting glue on the glue coating area to form a glue film, the welding tape can be bonded to the glue film so that the welding tape and the battery cell are connected, replacing the welding process of the welding tape and the battery cell in the prior art, solving the technical problem of the complexity of the welding equipment and process, and achieving the technical effect of simplifying the processing process. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the glue coating process flow described in the present application;

[0025] Figure 2 is a schematic diagram of the battery cell described in the present application;

[0026] Figure 3 is a schematic diagram of the grid lines of the battery cell described in the present application;

[0027] Figure 4 is Figure 3 an enlarged view of A in

[0028] Figure 5 is a schematic structural diagram of the glue pool of the glue coating device described in the present application;

[0029] Figure 6 is a schematic diagram of the glue coating device described in the present application;

[0030] Figure 7 is a cross-sectional view of the glue coating device described in the present application;

[0031] Figure 8 is a schematic diagram of the first transfer member in the glue coating device described in the present application;

[0032] Figures 9-11This is the schematic diagram of the second transfer piece in the glue - applying equipment described in this application.

[0033] Explanation of reference numerals in the drawings: 100, solar cell; 110, grid line; 120, glue - applying area; 130, glue film; 200, glue pool; 210, tank body; 220, open end; 230, scraper; 300, carrier; 310, base; 320, transfer piece; 321, rib; 3211, transfer part; 322, wire body; 3221, wire mesh; 400, battery holder; 410, bearing surface. Detailed implementation manners

[0034] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling). In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to this application.

[0035] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0036] This application provides a glue - applying process, a glue - applying device, and a processing process for a solar cell 100, which solves the technical problem of the complexity of welding equipment and processes and achieves the technical effect of simplifying the processing process.

[0037] In order to better understand the above - mentioned technical solutions, the above - mentioned technical solutions will be described in detail below in combination with the drawings in the specification and specific implementation manners. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0038] This application provides a glue - applying process, which is applied to the solar cell 100 so that the solar cell 100 can be adhered to a solder tape through a colloid, such as Figure 1As shown in the figure, the glue coating process includes: presetting a glue coating area 120 on the battery cell 100, where the glue coating area 120 corresponds to the electrodes of the battery cell 100; providing a colloid that is electrically conductive, making the colloid a fluid, and arranging the colloid along the glue coating area 120 to form a glue film 130; and making the glue film 130 a solid.

[0039] As Figures 2-4 shown in the figure, presetting the glue coating area 120 on the battery cell 100, it can be understood that the glue coating area 120 refers to the position through which the colloid needs to be arranged. The setting of the glue coating area 120 serves the arrangement of the colloid, enabling the colloid to be arranged more precisely. In other words, the glue coating area 120 is arranged based on the electrodes of the battery cell 100. The electrodes refer to the grid lines 110 of the battery cell 100. The glue coating area 120 is set in one-to-one correspondence with the grid lines 110. In this way, after the colloid arrangement is completed, the grid lines 110, the colloid, and the solder tape on the battery cell 100 can be made to correspond, so as to improve the connection strength between the battery cell 100 and the solder tape; in one embodiment, the grid lines 110 of the battery cell 100 are formed in multiple groups side by side. Specifically, the multiple groups of grid lines 110 are kept parallel and equidistant. Therefore, the glue coating area 120 is arranged as a straight line, and the glue coating area 120 is also set in multiple groups and arranged side by side at equal intervals. In other words, the number of the glue coating areas 120 is the same as the number of the grid lines 110 and they are in one-to-one correspondence.

[0040] It can be understood that the glue coating area 120 can be a physical concept or a virtual concept. For example, when the colloid arrangement method is screen printing or the like, first, a screen pattern needs to be laid on the battery cell 100, and the pattern to be printed is the glue coating area 120 of the colloid, that is, a physical concept; when the colloid arrangement method is spraying, 3D printing or transfer printing or the like, the glue coating area 120 is formed by computer calculation control or formed by the shape of the transfer piece 320, that is, a virtual concept.

[0041] Regarding the selection of the colloid, the provided colloid has viscosity and is electrically conductive, so that after the battery cell 100 and the solder tape are bonded through the colloid, the solder tape and the battery cell 100 are electrically connected. Specifically, the main body of the colloid is resin to make the colloid viscous. In one embodiment, a hot-melt resin or a thermosetting resin can be used, for example: one or a combination of materials such as EVA, waterborne polyurethane, phenoxy resin, epoxy resin, phenolic resin, rubber, etc.; conductive fillers are added to the resin to make the colloid electrically conductive. In one embodiment, the conductive fillers can be metal powders or inorganic non-metallic powders. Exemplarily, the metal powders are one or a combination of materials such as silver, copper, aluminum, nickel, silver-coated copper, silver-coated aluminum, silver-coated nickel, nickel-coated copper or nickel-coated aluminum, etc.; the inorganic non-metallic powders are one or a combination of materials such as graphite, graphene, zinc oxide, tin oxide, etc.; the shape of the conductive fillers can be spherical, flaky or dendritic, and the particle size is 100 nm to 50 μm, preferably 200 nm to 20 μm.

[0042] It should be noted that the colloid itself has viscosity. Before the colloid is laid out, the colloid needs to be made into a fluid so that the colloid can flow. The fluid colloid is beneficial to be laid out along the preset glue application area 120, improving the laying efficiency and effect. After the colloid is laid out along the preset glue application area 120, the colloid is made into a solid so that the colloid forms a glue film 130 on the battery cell 100. The glue film 130 has no viscosity or low viscosity, preventing the battery cell 100 from adhering to other structures during loading or transportation. In this way, the glue application process of the colloid on the battery cell 100 is completed.

[0043] Among them, the laying method of the colloid can adopt one or more of the following: The colloid is printed on the battery cell 100 along the glue application area 120 by screen printing to form a glue film 130. Using the basic principle that the mesh holes of the graphic part of the screen printing plate penetrate the paste (colloid), and the mesh holes of the non-graphic part do not penetrate the paste (colloid) for printing. During printing, through the extrusion of the squeegee, the colloid is transferred to the battery cell 100 through the mesh holes of the graphic part to form the glue film 130 of the glue application area 120. The colloid is printed on the battery cell 100 along the glue application area 120 by 3D printing to form a glue film 130. Through computer control, the colloid material is stacked layer by layer on the battery cell 100 to form a three-dimensional glue film 130 of the glue application area 120. The colloid is sprayed on the battery cell 100 along the glue application area 120 to form a glue film 130. The colloid is sprayed onto the battery cell 100 in a mist form by using a spray gun or nozzle, and the glue film 130 on the glue application area 120 is formed by controlling the moving path and spraying amount of the spray gun.

[0044] Or, the colloid is transferred on the battery cell 100 along the glue application area 120 to form a glue film 130. First, the colloid is set on the transfer piece 320, and then the colloid on the transfer piece 320 is transferred to the battery cell 100 by means of stamping, etc. Specifically, a carrier 300 is provided. The carrier 300 has a transfer piece 320. The transfer piece 320 is arranged in a straight line. There are multiple groups of transfer pieces 320 arranged in parallel. The transfer piece 320 is correspondingly arranged with the glue application area 120. The transfer piece 320 is dipped with the colloid. The carrier 300 is brought close to the battery cell 100 so that the transfer piece 320 is in corresponding contact with the glue application area 120.

[0045] Furthermore, the width of the glue film 130 is less than or equal to the width of the welding tape. Since after the glue film 130 is heated and melted, the welding tape is placed on the glue film 130, and due to the certain pressure of the welding tape on the battery cell 100 or the glue film 130, the welding tape can squeeze the glue film 130 to both sides, so that the colloid in the middle can flow to both sides. Controlling the width of the glue film 130 to be less than or equal to the width of the welding tape is beneficial to reducing the quality problems of the battery cell 100 caused by the flow of the colloid and reducing the cost of the colloid usage.

[0046] It should be noted that regarding the phase change of the colloid: In order to improve the fluidity of the colloid, before the colloid is laid out, the colloid needs to be in a fluid state (the colloid itself is a fluid or is transformed into a fluid through a process); after the colloid is laid out along the glue application area 120, the colloid is transformed into a solid, and at this time the colloid has no viscosity or low viscosity; when it is necessary to connect the battery cell 100 and the solder tape, the colloid is transformed from a solid into a fluid again to make the colloid have viscosity; after the solder tape is laid out, the colloid is transformed from a fluid into a solid again, that is, the colloid has at least the phase change characteristics of fluid → solid → fluid → solid. Among them, after the last liquid → solid phase change is completed, as the temperature rises, the colloid cannot undergo a phase change again, completes the cross-linking and curing reaction, and can withstand high temperatures.

[0047] Furthermore, after the colloid is laid out along the preset glue application area 120, the colloid is heated at a temperature T1 to transform the colloid from a fluid state into a solid, thereby forming a glue film 130. The glue film 130 has no viscosity or low viscosity; when it is necessary to bond the solder tape and the battery cell 100, the colloid is heated at a temperature T2 to transform the colloid from a solid into a fluid, so that the colloid regains viscosity and bonds the battery cell 100 and the solder tape; among them, the temperature range of T1 is 10-140 °C, preferably 20-100 °C; the temperature range of T2 is 50-150 °C, preferably 60-140 °C, where T1 is less than T2. Regarding the last phase change process of the colloid, the process can be adjusted based on the selection of the colloid. For example, if the colloid can complete curing at room temperature, heating is not required; if the colloid needs to be heated to complete the phase change, the colloid needs to be heated again for curing. After the glue film 130 is formed on the battery cell 100, the colloid can be heated and heated up while the solder tape is being laid out to make the colloid regain viscosity; or the colloid can be heated and heated up first, and then the solder tape is laid out; or the solder tape is laid out first, and then the colloid is heated and heated up.

[0048] The present application also provides a glue application device, as Figures 5-11 shown, for applying glue on the battery cell 100. The battery cell 100 has a linear glue application area 120. The glue application areas 120 are provided in multiple groups, and the multiple groups of glue application areas 120 are kept parallel and equidistant. The glue application device in this embodiment is applicable to the above glue application method. The glue application device includes: a glue pool 200 and a carrier 300. The glue pool 200 is used to store the colloid; the carrier 300 has a transfer member 320, which is used to dip the colloid in the glue pool 200 and transfer the colloid to the battery cell 100 and conform to the glue application area 120 on the battery cell 100.

[0049] The glue pool 200, as Figure 5As shown, the glue pool 200 is used to store glue. The glue pool 200 is used in cooperation with the transfer member 320. Specifically, the glue pool 200 has a tank body 210 for accommodating the glue. The transfer member 320 enters the tank body 210 to dip the glue, so that the transfer member 320 has glue on it. Among them, the tank body 210 has an opening 220. The opening 220 means that the transfer member 320 can enter and exit the tank body 210 through this opening 220 to dip the glue. The position where the opening 220 is located is on the third plane. The glue pool 200 further includes a squeegee 230 for scraping the glue. The squeegee 230 has a degree of freedom of movement, so that the squeegee 230 can scrape the opening 220 flat along the length or width direction of the tank body 210. In other words, under the action of the squeegee 230, the part of the glue that overflows or is higher than the opening 220 of the tank body 210 can be scraped away to ensure that the top of the glue is on the third plane. Among them, the depth of the tank body 210 is relatively shallow and should meet the requirement that the depth of the tank body 210 is less than the thickness of the transfer member 320. In this way, the transfer member 320 can only partially enter the tank body 210 to contact the glue, rather than the entire transfer member 320 being immersed in the glue, preventing the adjacent transfer members 320 from sticking to each other due to excessive glue dipping, which is beneficial to improving the transfer accuracy and effect.

[0050] The carrier 300, such as Figures 6-8 As shown, the carrier 300 is used to dip the glue in the glue pool 200 and transfer the glue to the battery cell 100. The carrier 300 includes a base 310 and a transfer member 320. The transfer member 320 is connected to the base 310. The transfer member 320 is arranged corresponding to the glue application area 120, that is, the transfer members 320 correspond one-to-one with the glue application areas 120, so that the transfer member 320 can transfer the glue to the glue application area 120 on the battery cell 100. By designing the shape of the transfer member 320, the glue application area 120 under different process requirements can be satisfied.

[0051] In one embodiment, as Figure 7 、 8 As shown, the transfer member 320 is a convex strip 321. There are multiple groups of convex strips 321. The multiple groups of convex strips 321 are arranged corresponding to the glue application area 120, that is, the convex strips 321 are parallel to each other and equidistant. The end of the convex strip 321 has a transfer part 3211 for cooperating with the glue pool 200, that is, the transfer part 3211 is used to dip the glue. The glue is transferred to the glue application area 120 through the contact between the convex strip 321 and the battery cell 100. Further, the transfer parts 3211 are in the same plane, and this plane is defined as the first plane, so that when transferring, each transfer part 3211 can keep in contact with the battery cell 100, improving the accuracy of glue transfer.

[0052] Further, as Figure 7As shown, it further includes a battery holder 400 for carrying the battery cell 100. The battery holder 400 is movable relative to the transfer member 320. A bearing surface 410 is provided on the battery cell 100 for fixing the battery cell 100. The fixing method can be adsorption, bonding, etc., so that the battery cell 100 is fixed on the bearing surface 410. At least one of the battery holder 400 and the carrier 300 is movable to drive the transfer member 320 and the battery cell 100 to approach each other, so that the battery cell 100 contacts the transfer member 320 dipped with the colloid, thereby completing the transfer of the colloid. Further, the bearing surface 410 is set as a plane, which is defined as the second plane. The second plane is parallel to the first plane. In this way, the plane where the battery cell 100 is located is parallel to the plane where the transfer part 3211 is located, so as to improve the transfer effect of the colloid between the transfer part 3211 and the battery cell 100 and ensure that each transfer part 3211 can contact the battery cell 100.

[0053] In the second embodiment, as Figures 9-11 shown, the transfer member 320 is a wire body 322, and there are at least two groups of the base 310. The wire body 322 is connected between the bases 310 to form a wire mesh 3221 for cooperating with the glue application area 120 so that the colloid is transferred onto the glue application area 120. Further, there are two groups of the base 310, and the wire body 322 is connected between the two bases 310 in a winding form, thereby forming a wire mesh 3221 above and below respectively. One of the wire meshes 3221 can be selected as the working wire mesh 3221, or both can be used as the working wire mesh 3221, that is, the wire meshes 3221 located above and below can both cooperate with the battery cell 100 for the transfer of the colloid.

[0054] Further, as Figure 10 、 11 shown, it further includes a battery holder 400 for carrying the battery cell 100. The battery holder 400 is movable relative to the transfer member 320. A bearing surface 410 is provided on the battery cell 100 for fixing the battery cell 100. The fixing method can be adsorption, bonding, etc., so that the battery cell 100 is fixed on the bearing surface 410. At least one of the battery holder 400 and the carrier 300 is movable to drive the transfer member 320 and the battery cell 100 to approach each other, so that the battery cell 100 contacts the transfer member 320 dipped with the colloid, thereby completing the transfer of the colloid. Further, the bearing surface 410 is set as a plane, which is defined as the second plane. The second plane is parallel to the first plane. In this way, the plane where the battery cell 100 is located is parallel to the plane where the transfer part 3211 is located, so as to improve the transfer effect of the colloid between the transfer part 3211 and the battery cell 100 and ensure that each transfer part 3211 can contact the battery cell 100.

[0055] Alternatively, the bearing surface 410 is a convex arc surface. When the solar cell 100 is fixed on this arc surface, it also maintains an arc shape. By bringing the battery holder 400 and the wire mesh 3221 closer to each other, since the wire mesh 3221 has a certain tension, the arc-shaped bearing surface 410 will push the wire mesh 3221 inward to deform and sink the wire mesh 3221. In this way, the inner wire mesh 3221 is attached to the solar cell 100 located on the bearing surface 410, which is beneficial to improving the contact between the solar cell 100 and the transfer member 320. At the same time, since the first plane and the second plane are parallel to each other with high precision, with such a setting, the position accuracy requirements between the transfer member 320 and the solar cell 100 can be reduced.

[0056] The present application also provides a processing method for the solar cell 100, which is applicable to the solar cell 100 obtained by the above-mentioned glue coating method, and includes: heating the solar cell 100 to convert the glue film 130 on the solar cell 100 from a solid state to a fluid state, that is, the colloid resumes its viscosity. The welding tape is arranged corresponding to the glue coating area 120, so that the welding tape is firmly bonded to the solar cell 100, and then the colloid is cured to complete the processing of the welding tape on the solar cell 100. When arranging the welding tape, the colloid can be heated to increase its temperature to make the colloid resume its viscosity; or the colloid can be heated to increase its temperature first, and then the welding tape is arranged; or the welding tape is arranged first, and then the colloid is heated to increase its temperature.

[0057] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0058] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A glue coating device, characterized in that, Applied to the glue coating of the battery cell (100), the battery cell (100) has a glue coating area (120), and the glue coating area (120) is arranged relative to the electrodes of the battery cell (100). The glue coating device includes: A carrier (300), the carrier (300) includes: A base (310); A transfer member (320), the transfer member (320) is connected to the base (310), and the transfer member (320) is arranged corresponding to the glue coating area (120) so that the glue on the transfer member (320) can be transferred to the glue coating area (120).

2. The glue application device according to claim 1, characterized in that, The transfer members (320) are multiple groups and arranged in a straight line side by side.

3. A gluing device according to claim 2, characterized in that, The transfer member (320) is a convex strip (321), and the convex strip (321) has a transfer portion (3211). The transfer portion (3211) is used for dipping the colloid so that the colloid is transferred to the glue coating area (120). Multiple transfer portions (3211) are located in a first plane.

4. The gluing device according to claim 3, characterized in that, It further includes: A battery holder (400), the battery holder (400) is movable relative to the transfer member (320). The battery holder (400) has a bearing surface (410), and the bearing surface (410) is used for bearing the battery cell (100). The bearing surface (410) is located in a second plane, and the second plane is parallel to the first plane.

5. The glue coating device according to claim 2, characterized in that The transfer member (320) is a wire mesh (3221), and the base (310) has at least two groups. The wire mesh (3221) is connected between the bases (310), and the wire mesh (3221) is used for dipping the colloid so that the colloid is transferred to the glue coating area (120).

6. The glue application device according to claim 5, characterized in that, It further includes: A battery holder (400), the battery holder (400) is movable relative to the transfer member (320). The battery holder (400) has a bearing surface (410), and the bearing surface (410) is used for bearing the battery cell (100). The bearing surface (410) is set as a plane.

7. A gluing device according to claim 5, characterized in that, It further includes: A battery holder (400), the battery holder (400) is movable relative to the transfer member (320). The battery holder (400) has a bearing surface (410), and the bearing surface (410) is used for bearing the battery cell (100). The bearing surface (410) is set as a convex arc surface.

8. A gluing device according to claim 3 or 5, characterized in that, It further includes: A glue pool (200), the glue pool (200) has a tank body (210), and the tank body (210) is used for accommodating the colloid. At least part of the transfer member (320) can enter the tank body (210) to contact the colloid.

9. A gluing device according to claim 8, characterized in that, The depth of the tank body (210) is less than the thickness of the transfer member (320).

10. A gluing device according to claim 8, characterized in that, The tank body (210) has an opening (220), and the glue pool (200) further includes: A scraper (230), the scraper (230) is used for scraping the glue. The scraper (230) has a degree of freedom of movement so that the scraper (230) can scrape the colloid flat relative to the opening (220).

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