Heating bottom plate for gluing thin grid of battery piece

Abstract

The utility model belongs to the field of production and manufacturing of solar cells, and particularly relates to a heating bottom plate for gluing a thin grid of a cell, which comprises a heating plate, an adsorption plate, a sealing plate, a sealing plate, a sealing plate, a sealing plate, a sealing plate and a fixing plate, and is characterized in that the upper surface of the heating plate is provided with a groove, and a plurality of magnetic strips are embedded at the bottom of the groove; the upper surface of the heating plate is provided with the groove, the magnetic strip is arranged in the groove, the adsorption plate is arranged in the groove, the adsorption plate is provided with a plurality of adsorption holes for adsorbing battery pieces, and the heating device is arranged in the heating plate so as to increase the temperature of the heating plate. The magnetic strip is prevented from being exposed to be used to cause fragmentation of the magnetic strip, and the service life of the magnetic strip is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the solar cell production and manufacturing field, especially relates to a heating bottom plate for battery piece fine grid adhesive. BACKGROUND

[0002] When the fine grid of the solar cell piece is adhered, the cell piece, the solder strip and the pressing net brushed with the glue are sequentially placed on the heating bottom plate, and the process of glue preheating, heating and solidification is completed through the stepping mode.

[0003] The existing heating bottom plate generally uses a magnet to adsorb the pressing net placed on the surface of the heating bottom plate, so that the pressing net applies pressure to the solder strip, and guarantees the close connection of the solder strip, the glue and the cell piece, but the magnet is embedded on the outer surface of the heating bottom plate and is exposed for long-term use, especially the magnet directly contacts the cell piece brushed with the glue, so that the magnet is easily broken and needs to be frequently replaced.

[0004] Therefore, how to avoid the magnet from being easily broken when exposed for use is a technical problem urgently to be solved in the field.

[0005] It should be noted that the above information disclosed in the background section is only used to understand the background technology of the present application, and therefore, it can contain information that does not constitute prior art. SUMMARY

[0006] The present disclosure provides at least a heating bottom plate for battery piece fine grid adhesive.

[0007] In a first aspect, the present disclosure provides a heating bottom plate for battery piece fine grid adhesive, comprising: a heating plate, a recess is formed on the upper surface of the heating plate, and a plurality of magnetic strips are embedded at the bottom of the recess;

[0008] An adsorption plate is arranged on the upper surface of the heating plate, seals the recess and presses the magnetic strips, and the adsorption plate is provided with a plurality of adsorption holes for adsorbing cell pieces;

[0009] A heating device is arranged inside the heating plate to increase the temperature of the heating plate.

[0010] In an optional embodiment, a plurality of strip-shaped grooves are formed at the bottom of the recess;

[0011] The magnetic strips are installed in the strip-shaped grooves, and the height of the magnetic strips is greater than the depth of the strip-shaped grooves, so that the adsorption plate abuts against the magnetic strips.

[0012] In an optional embodiment, the adsorption holes are elongated, and the length of the adsorption holes is consistent with the length of the strip-shaped grooves;

[0013] The strip-shaped grooves are located between the adjacent two rows of adsorption holes, so that the magnetic strips are misaligned with the adsorption holes.

[0014] In an alternative embodiment, the adsorption plate is divided into several heating stations corresponding to respective heating processes.

[0015] The heating device comprises several independently controlled heating areas corresponding to the respective heating stations.

[0016] In an alternative embodiment, the side wall of the heating plate is provided with at least two adsorption joints.

[0017] The adsorption joint is connected to the groove, and the adsorption joint is also connected to a vacuum pump to create a vacuum inside the groove, thereby enabling the adsorption holes to adsorb the battery sheet.

[0018] In an alternative embodiment, a sealing gasket is arranged between the heating plate and the adsorption plate, and the heating plate, the sealing gasket, and the adsorption plate are connected by bolts, so that the adsorption holes of the adsorption plate have adsorption force.

[0019] In an alternative embodiment, the adsorption plate is divided into several heating stations corresponding to respective heating processes.

[0020] The heating device comprises several independently controlled heating areas corresponding to the respective heating stations.

[0021] The heating device comprises a control module, temperature sensors, and heating rods distributed in the heating areas.

[0022] The temperature sensors detect the temperature of the heating plate.

[0023] The control module is configured to control the heating rods to heat the respective heating stations according to the temperature feedback from the temperature sensors.

[0024] In an alternative embodiment, a heat dissipation device is arranged below the heating plate.

[0025] In a second aspect, the present disclosure also provides a heating bottom plate for fine grid adhesion of a battery sheet, comprising: a heating plate, the upper surface of which is provided with a groove, and the bottom of the groove is embedded with several magnetic strips;

[0026] An adsorption plate is arranged on the upper surface of the heating plate, and a sealing gasket is arranged between the heating plate and the adsorption plate, and the heating plate, the sealing gasket, and the adsorption plate are connected to seal the groove.

[0027] The adsorption plate presses the magnetic strips, and the adsorption plate is provided with several adsorption holes to adsorb the battery sheet.

[0028] A heating device is arranged inside the heating plate to increase the temperature of the heating plate.

[0029] The heating device raises the temperature of the heating plate, the adsorption plate adsorbs the battery piece with glue, and the magnetic strip adsorbs the pressing net, so that the pressing net is pressed to the battery piece with glue, and the preheating, heating and curing of the glue are completed.

[0030] In an alternative embodiment, the adsorption holes are elongated holes, and the magnetic strip is located between two adjacent rows of adsorption holes.

[0031] The heating plate is provided below with a heat dissipation device comprising a plurality of heat dissipation fins to dissipate heat from the heating plate.

[0032] The utility model discloses the beneficial effect is, the utility model discloses a recess is set up on the upper surface of heating plate, sets up the magnetic strip in the recess, and sets up the adsorption plate to seal the recess, makes the magnetic strip be located in the inside of heating bottom plate, avoids the magnetic strip exposure and uses and leads to the magnetic strip fragmentation, improves the service life of magnetic strip.

[0033] The other features and advantages of the utility model will be set forth in the subsequent description, and, partially become obvious from the description, or understand by implementing the utility model. The purpose and other advantages of the utility model are realized and obtained in the structure that the specification and the drawing point out specially.

[0034] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0036] Figure 1 An explosion schematic view of the heating bottom plate for battery piece fine grid adhesion provided by the embodiment of the present disclosure is provided.

[0037] Figure 2 A sectional view of the heating bottom plate for battery piece fine grid adhesion provided by the embodiment of the present disclosure is provided.

[0038] Figure 3 A perspective view of the heating bottom plate for battery piece fine grid adhesion provided by the embodiment of the present disclosure is provided.

[0039] Figure 4 A local enlarged view of the heating bottom plate for battery piece fine grid adhesion provided by the embodiment of the present disclosure is provided.

[0040] In the picture:

[0041] 1. Heating plate; 11. Groove; 12. Magnetic strip; 13. Strip groove; 14. Heating station; 15. Adsorption connector; 16. Sealing gasket;

[0042] 2. Adsorption plate; 21. Adsorption holes;

[0043] 3. Heating device; 31. Temperature sensor; 32. Heating rod;

[0044] 4. Heat dissipation device; 41. Heat sink. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0046] Research has found that in related technologies, when bonding the fine grid of solar cells, the cells, solder ribbons, and grids coated with adhesive are placed sequentially on a heating base plate, and the process of preheating, heating, and curing the adhesive is completed in a step-by-step manner.

[0047] Existing heating base plates generally use magnets to attract the pressure mesh placed on the surface of the heating base plate, so that the pressure mesh applies pressure to the solder ribbon to ensure a tight connection between the solder ribbon, adhesive and battery cell. However, the magnet is embedded on the outer surface of the heating base plate and is exposed to the outside for a long time. In particular, the magnet has to directly contact the battery cell with adhesive, which makes the magnet very easy to break and requires frequent replacement.

[0048] Therefore, how to prevent magnets from becoming brittle when exposed to the elements is a technical problem that urgently needs to be solved in this field.

[0049] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0050] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the figures, the thickness of parts may be exaggerated or reduced for the purpose of effectively depicting the technical content.

[0051] Based on the above research, and in order to solve the aforementioned technical problems, refer to Figure 1At least one embodiment provides a heating base plate for bonding fine grids of battery cells, comprising: a heating plate 1, the upper surface of which has a groove 11, an adsorption plate 2 is also provided on the upper surface of the heating plate 1, the adsorption plate 2 seals the groove 11, a plurality of magnetic strips 12 are embedded at the bottom of the groove 11, the magnetic strips 12 are suitable for adsorbing and pressing the grid, the adsorption plate 2 seals the groove 11 and also presses the magnetic strips 12, and the adsorption plate 2 has a plurality of adsorption holes 21 for adsorbing battery cells, and a heating device 3 is provided inside the heating plate 1, the heating device 3 is suitable for raising the temperature of the heating plate 1.

[0052] During operation, the battery cells coated with adhesive, the solder ribbon, and the pressure mesh are placed sequentially on the heating base plate. The adsorption plate 2 adsorbs the battery cells coated with adhesive, and the magnetic strip 12 adsorbs the pressure mesh, so that the pressure mesh presses the solder ribbon and the battery cells coated with adhesive tightly. Then, the heating plate 1 completes the preheating, heating, and curing of the adhesive. The heating base plate 1 has a groove 11 on its upper surface, and a magnetic strip 12 is placed in the groove 11. The adsorption plate 2 is used to seal the groove 11, so that the magnetic strip 12 is located inside the heating base plate. This prevents the magnetic strip 12 from being exposed and broken, thus improving the service life of the magnetic strip 12.

[0053] Reference Figure 3 In order to achieve the effect of adsorbing the battery cell through the adsorption hole 21, in some embodiments, the side wall of the heating plate 1 is provided with at least two adsorption connectors 15, which are connected to the groove 11 and are also connected to a vacuum pump to create a vacuum inside the groove 11, thereby achieving the above-mentioned effect.

[0054] Reference Figure 4 In order to enhance the adsorption effect of the adsorption holes 21, in some embodiments, a sealing gasket 16 is provided between the heating plate 1 and the adsorption plate 2. The heating plate 1, the sealing gasket 16 and the adsorption plate 2 are connected by bolts so that the heating plate 1 and the adsorption plate 2 press the sealing gasket 16 tightly, and the groove of the groove 11 is completely sealed. Therefore, when the groove 11 is evacuated, the adsorption holes 21 opened by the adsorption plate 2 have a strong adsorption force.

[0055] Reference Figure 2 and Figure 4 Specifically, the magnetic strip 12 is configured such that, in some embodiments, the bottom of the groove 11 is provided with several strip grooves 13, the magnetic strip 12 is installed in the strip grooves 13, and the height of the magnetic strip 12 is greater than the depth of the strip grooves 13, so that the adsorption plate 2 abuts against the magnetic strip 12. Preferably, the distance between the bottom of the strip groove 13 and the bottom of the groove 11 is one millimeter, so as to meet the requirement that the magnetic strip 12 is embedded in the bottom of the groove 11.

[0056] In some embodiments, the adsorption holes 21 are elongated and their length is the same as that of the strip groove 13. The strip groove 13 is located between two adjacent rows of adsorption holes 21 so that the magnetic strip 12 is misaligned with the adsorption holes 21, thereby achieving magnetic adsorption and pressing of the mesh while avoiding the magnetic strip 12 blocking the adsorption holes 21.

[0057] Reference Figure 1 , Figure 3 and Figure 4 The structure of the heating device 3 is described in detail. In some embodiments, the adsorption plate 2 is divided into several heating stations 14 to correspond to the corresponding heating process. The heating device 3 includes several independently controlled heating areas to correspond to each heating station 14.

[0058] Specifically, the heating device 3 includes a control module, as well as temperature sensors 31 and heating rods 32 distributed in each heating area. The temperature sensors 31 detect the temperature of the heating plate 1, and the control module is configured to control the heating rods 32 to heat the corresponding heating station 14 according to the temperature feedback from the temperature sensors 31, so that each heating station 14 reaches the set temperature and the temperature difference is within 5°C.

[0059] It is worth mentioning that the number of heating stations 14 is preferably five, and the set working temperature of the five heating stations 14 increases sequentially for each heating station 14. The battery cells, welding ribbons and pressure mesh stacked on the heating base plate pass through the five heating stations 14 in a stepping manner, so that the adhesive is preheated, then heated, and finally cured. This effectively avoids the adhesive directly experiencing high temperature, which could cause poor soldering between the battery cells and welding ribbons. Moreover, the battery cells with adhesive can complete the entire process on one heating base plate, which improves work efficiency.

[0060] Reference Figure 3 In order to dissipate heat from the heating plate 1, in some embodiments, a heat dissipation device 4 is provided below the heating plate 1. The heat dissipation device 4 includes a plurality of heat sinks 41 and is brushed with thermal grease to fully achieve the heat dissipation effect.

[0061] In summary, the aforementioned heating base plate, by creating a groove 11 on the upper surface of the heating plate 1, placing a magnetic strip 12 within the groove 11, and sealing the groove 11 with an adsorption plate 2, ensures that the magnetic strip 12 is located inside the heating base plate. This prevents the magnetic strip 12 from being exposed and thus avoids breakage, thereby extending its service life. Furthermore, by dividing the adsorption plate 2 into several heating stations 14, the adhesive is preheated, then heated, and finally cured. This effectively prevents the adhesive from directly experiencing high temperatures, which could lead to poor soldering between the battery cells and the solder ribbon. Moreover, the entire process for battery cells with adhesive applied can be completed on a single heating base plate, improving work efficiency.

[0062] As used herein, the phrases “at least one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0063] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0064] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0065] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A heating base plate for bonding fine grids of battery cells, characterized in that, include: A heating plate (1) has a groove (11) on its upper surface, and a number of magnetic strips (12) are embedded at the bottom of the groove (11). The adsorption plate (2) is set on the upper surface of the heating plate (1), the sealing groove (11) presses down the magnetic strip (12) at the same time, and the adsorption plate (2) has a number of adsorption holes (21) for adsorbing battery cells. A heating device (3) is installed inside the heating plate (1) to raise the temperature of the heating plate (1).

2. The heating base plate as described in claim 1, characterized in that, The bottom of the groove (11) is provided with several strip grooves (13). The magnetic strip (12) is installed in the strip groove (13), and the height of the magnetic strip (12) is greater than the depth of the strip groove (13) so that the adsorption plate (2) abuts against the magnetic strip (12).

3. The heating base plate as described in claim 2, characterized in that, The adsorption pore (21) is long and thin, and its length is the same as that of the strip groove (13); The strip groove (13) is located between two adjacent rows of adsorption holes (21) so that the magnetic strip (12) is misaligned with the adsorption hole (21).

4. The heating base plate as described in claim 1, characterized in that, The adsorption plate (2) is divided into several heating stations (14) to correspond to the respective heating processes; The heating device (3) includes several independently controlled heating zones, each corresponding to a heating station (14).

5. The heating base plate as described in claim 1, characterized in that, The heating plate (1) has at least two adsorption joints (15) on its side wall. The adsorption connector (15) is connected to the groove (11), and the adsorption connector (15) is also connected to a vacuum pump to create a vacuum inside the groove (11), thereby allowing the adsorption hole (21) to adsorb the battery cell.

6. The heating base plate as described in claim 5, characterized in that, A sealing gasket (16) is provided between the heating plate (1) and the adsorption plate (2), and the heating plate (1), the sealing gasket (16) and the adsorption plate (2) are connected by bolts so that the adsorption holes (21) opened in the adsorption plate (2) have adsorption force.

7. The heating base plate as described in claim 1, characterized in that, The adsorption plate (2) is divided into several heating stations (14) to correspond to the respective heating processes; The heating device (3) includes several independently controlled heating zones, each corresponding to a heating station (14); wherein The heating device (3) includes a control module, as well as temperature sensors (31) and heating rods (32) distributed in each heating zone. The temperature sensor (31) detects the temperature of the heating plate (1); and The control module is configured to control the heating rod (32) to heat the corresponding heating station (14) based on the temperature feedback from the temperature sensor (31).

8. The heating base plate as described in claim 1, characterized in that, A heat dissipation device (4) is provided below the heating plate (1).

9. A heating base plate for bonding fine grids of battery cells, characterized in that, include: A heating plate (1) has a groove (11) on its upper surface, and a number of magnetic strips (12) are embedded at the bottom of the groove (11). An adsorption plate (2) is disposed on the upper surface of a heating plate (1). A sealing gasket (16) is disposed between the heating plate (1) and the adsorption plate (2). The heating plate (1), the sealing gasket (16) and the adsorption plate (2) are connected to seal the groove (11). The adsorption plate (2) presses down the magnetic strip (12), and the adsorption plate (2) has a plurality of adsorption holes (21) to adsorb the battery cells; Heating device (3) is installed inside heating plate (1) to raise the temperature of heating plate (1); and The heating device (3) raises the temperature of the heating plate (1), the adsorption plate (2) adsorbs the battery cell brushed with glue, and the magnetic strip (12) adsorbs the pressure mesh so that the pressure mesh presses the welding strip and the battery cell brushed with glue, thus completing the preheating, heating and curing of the glue.

10. The heating base plate as described in claim 9, characterized in that, The adsorption holes (21) are elongated holes, and the magnetic strip (12) is located between two adjacent rows of adsorption holes (21); and A heat dissipation device (4) is provided below the heating plate (1), and the heat dissipation device (4) includes a plurality of heat dissipation fins (41) to dissipate heat from the heating plate (1).

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