UV curing device and auxiliary tool thereof

Abstract

The utility model relates to a UV curing device and an auxiliary tool thereof, the auxiliary tool is used for being arranged between a UV lamp holder and a battery piece, and the auxiliary tool comprises a fixing plate and a plurality of convex lenses. A plurality of mounting holes are formed in the fixing plate, the plurality of convex lenses are arranged in the plurality of mounting holes, and on the fixing plate, the plurality of convex lenses are used for being in one-to-one correspondence with glue point positions on the battery piece; and the convex lens is configured to enable UV light emitted by the UV lamp holder to irradiate the corresponding glue point position after being converged by the convex lens. The UV curing device comprises a UV lamp holder and an auxiliary tool. The auxiliary tool is arranged, the auxiliary tool comprises the fixing plate and the convex lenses arranged on the fixing plate, and through the convergence effect of the convex lenses, the UV light emitted by the UV lamp holder can be converged and then irradiates the corresponding glue point position, so that the curing of the glue point is accelerated, the irradiation time of a battery piece is shortened, and the reduction of the power of the assembly is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery cell production, and in particular to a UV curing device and its auxiliary tooling. Background Art

[0002] Heterojunction (HJT) cells have a high theoretical limit efficiency and are one of the current development directions for high-efficiency cells. The cost of HJT cell silver paste is relatively high, and 0BB (no main grid) can reduce silver consumption, increase power, and improve yield. There is no main grid on the surface of the 0BB cell. Glue points are set between the sub-grids by dispensing glue, and then solder strips are placed on the glue points. The glue points are then cured by irradiation under a UV light source to achieve the purpose of pre-fixing the solder strips.

[0003] However, in order to reduce the curing time, the UV lamp used for curing is usually of higher intensity, 5000-8000W / m 2 However, HJT cells are sensitive to UV light, which can easily lead to cell efficiency attenuation after curing, thereby causing a decrease in component power. Utility Model Content

[0004] Based on this, it is necessary to provide a UV curing device and its auxiliary tooling to address the problem of battery efficiency attenuation caused by the UV curing glue curing process.

[0005] An auxiliary tooling of a UV curing device, used to be arranged between a UV lamp head and a battery cell, the auxiliary tooling comprising:

[0006] A fixing plate, on which a plurality of mounting holes are provided;

[0007] A plurality of convex lenses are arranged in the plurality of mounting holes, and the plurality of convex lenses are used to correspond one-to-one to the glue point positions on the battery sheet. The convex lenses are configured to allow the UV light emitted by the UV lamp head to be converged by the convex lenses and then irradiated to the corresponding glue point positions.

[0008] In one embodiment, the mounting hole is a circular hole, and the plurality of convex lenses are arranged in one-to-one correspondence with the plurality of circular holes.

[0009] In one of the embodiments, the mounting hole is an elongated hole, and a plurality of convex lenses are slidably arranged in the same elongated hole.

[0010] In one of the embodiments, the fixing plate includes a light-proof layer and a light-absorbing layer which are stacked, and the light-proof layer is used to be arranged on a side of the light-absorbing layer close to the UV lamp head.

[0011] In one of the embodiments, the fixing plate comprises a reflective layer, and the reflective layer is arranged on a side of the light-impermeable layer away from the light-absorbing layer.

[0012] In one of the embodiments, the fixing plate includes a light-transmitting layer and a fluorescent layer which are stacked, and the light-transmitting layer is arranged on a side of the fluorescent layer close to the UV lamp head.

[0013] In one of the embodiments, a plurality of slots are provided on a side of the fixing plate close to the battery cell, and the plurality of slots are used to be arranged in one-to-one correspondence with the welding strips on the battery cell.

[0014] A UV curing device comprises a UV lamp head and an auxiliary tooling, wherein the UV lamp head has a light-emitting surface for emitting UV light, and the auxiliary tooling is located between the light-emitting surface of the UV lamp head and the battery sheet.

[0015] In one of the embodiments, a buckle is provided on the fixing plate, and the fixing plate is fixed to the UV lamp head through the buckle.

[0016] In one of the embodiments, a buckle is provided on the fixing plate, and the fixing plate is used to be fixed on the battery cell by the buckle.

[0017] The above-mentioned UV curing device and its auxiliary tooling are provided with auxiliary tooling, and the auxiliary tooling includes a fixed plate and a plurality of convex lenses arranged on the fixed plate. Through the converging effect of the convex lenses, the UV light emitted by the UV lamp head can be converged and irradiated on the corresponding glue point position to accelerate the curing of the glue point, reduce the irradiation time of the battery cell, and thereby reduce the power drop of the component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of auxiliary tooling in one embodiment.

[0019] Figure 2 It is a schematic diagram of the structure of the auxiliary tooling in another embodiment.

[0020] Figure 3 It is a structural schematic diagram of auxiliary tooling in another embodiment.

[0021] Figure 4 Schematic diagram of the installation structure of the lamp holder, auxiliary tooling and battery cells in one embodiment.

[0022] Figure numerals: 100, fixing plate; 110, long hole; 120, round hole; 130, light absorbing layer; 140, light-proof layer; 150, reflecting layer; 200, convex lens; 300, card slot; 400, UV lamp head; 500, battery cell. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0029] The cost of HJT battery silver paste is relatively high, and 0BB (no main grid) can reduce silver consumption, increase power, and improve yield. There is no main grid on the surface of the 0BB battery cell. Glue points are set between the secondary grids by dispensing glue, and then solder strips are placed on the glue points. The glue points are then cured by irradiation under a UV light source to achieve the purpose of pre-fixing the solder strips. However, during the irradiation under the UV light source, the battery cell will also receive UV light, causing the efficiency of the battery cell to decay.

[0030] See also Figure 1 , Figure 2 as well as Figure 4 ,,The auxiliary tooling of the UV curing device provided in one embodiment of the present application is used to be arranged between the UV lamp head 400 and the battery cell 500, and the auxiliary tooling includes a fixing plate 100 and a plurality of convex lenses 200. The fixing plate 100 is provided with a plurality of mounting holes, and the plurality of convex lenses 200 are arranged in the plurality of mounting holes. The plurality of convex lenses 200 are used to correspond to the glue point positions on the battery cell 500 one by one, and the convex lenses 200 are configured to make the UV light emitted by the UV lamp head 400 converge through the convex lenses 200 and irradiate to the corresponding glue point positions.

[0031] In this embodiment, an auxiliary tooling is provided, which includes a fixing plate 100 and a plurality of convex lenses 200 provided on the fixing plate 100. Through the converging effect of the convex lenses 200, the UV light emitted by the UV lamp head 400 can be converged and irradiated on the corresponding glue point position to accelerate the curing of the glue point, reduce the irradiation time of the battery cell 500, and thereby reduce the power drop of the component.

[0032] Combination Figure 1 In some embodiments, the mounting hole is a circular hole 120 , and the plurality of convex lenses 200 are arranged in one-to-one correspondence with the plurality of circular holes 120 .

[0033] In this embodiment, a plurality of mounting holes are evenly provided on the fixing plate 100, and a convex lens 200 is fixedly provided in each mounting hole. The positions of the mounting holes correspond to the positions of the glue points one by one, that is, through the convergence of the plurality of convex lenses 200, the UV light emitted by the UV lamp head 400 can be converged and irradiated on the corresponding glue point positions, so as to accelerate the curing of the glue points and reduce the irradiation time of the battery cell 500. The diameter of the mounting hole, that is, the size of the convex lens 200, is set according to the distance between the UV lamp head 400 and the convex lens 200, and the distance between the convex lens 200 and the battery cell 500. The diameter of the convex lens 200 is larger than the diameter of the glue point, so as to make more light converge on the glue point.

[0034] Combination Figure 2 In some other embodiments, the mounting hole is a long hole 110 , and a plurality of convex lenses 200 are slidably disposed in the same long hole 110 .

[0035] In this embodiment, a plurality of long holes 110 are provided on the mounting plate, and a plurality of convex lenses 200 are slidably arranged in each of the long holes 110, that is, the convex lenses 200 can slide in the long holes 110. Among them, the plurality of long holes 110 can be arranged in one-to-one correspondence with the plurality of solder strips, and the length of the long holes 110 is greater than or equal to the length of the solder strip. For battery cells 500 using the same number of solder strips, if the glue dispensing position on the same solder strip is changed, there is no need to replace the auxiliary tooling, and only the convex lenses 200 need to be moved so that the convex lenses 200 correspond to the changed glue dispensing position one-to-one.

[0036] The long hole 110 may be a slide groove, in which a plurality of sliders are arranged, each of which is provided with a circular hole 120, and the convex lens 200 is arranged in the circular hole 120, that is, the slider can drive the convex lens 200 to slide along the slide groove.

[0037] Furthermore, each slider is provided with a locking nut. When the slider moves to the corresponding dispensing position, the locking nut can be rotated so that one end of the locking nut abuts against the fixing plate 100 to lock the slider, thereby improving the stability of the auxiliary tooling.

[0038] Combination Figure 4 In some embodiments, the fixing plate 100 includes a light-proof layer 140 and a light-absorbing layer 130 which are stacked, and the light-proof layer 140 is used to be arranged on a side of the light-absorbing layer 130 close to the UV lamp head 400 .

[0039] In this embodiment, the opaque layer 140 can be made of an opaque material, for example, the opaque layer 140 is made of aluminum. The light-absorbing layer 130 is a black paint coated on the surface of the opaque layer 140 near the UV lamp head 400. The opaque layer 140 is used to enhance the absorption of light. When the UV light passing through the convex lens 200 irradiates the surface of the battery cell 500, it is re-reflected to the surface of the fixing plate 100. At this time, the reflected UV light can be absorbed by the light-absorbing layer 130, thereby reducing the UV light that reaches the battery surface again through reflection, thereby reducing the impact of UV light on the battery.

[0040] Combination Figure 4 Furthermore, the fixing plate 100 includes a reflective layer 150 , and the reflective layer 150 is disposed on a side of the opaque layer 140 away from the light absorbing layer 130 .

[0041] That is, the fixing plate 100 includes a reflective layer 150, a light-proof layer 140, and a light-absorbing layer 130, which are arranged in sequence. The reflective layer 150 is located on the surface close to the UV lamp head 400. The reflective layer 150 is used to reduce the absorption of light by the fixing plate 100, and reduce the temperature of the fixing plate 100 during use, thereby preventing the battery cell 500 from overheating due to the excessive temperature of the fixing plate 100, thereby causing the battery efficiency to decrease. Among them, the reflective layer 150 is a white or other highly reflective paint coated on the other side of the light-proof layer 140 away from the light-absorbing layer 130.

[0042] In addition, the fixed plate 100 is a rectangular structure with the same shape as the battery. Correspondingly, the opaque layer 140 is also a rectangular structure. The opaque layer 140 is provided with a light absorbing layer 130 on one side close to the battery panel, and the remaining sides are coated with a reflective layer 150 to further reduce the absorption of light by the fixed plate 100.

[0043] In some embodiments, the fixing plate 100 includes a light-transmitting layer and a fluorescent layer which are stacked, and the light-transmitting layer is used to be arranged on a side of the fluorescent layer close to the UV lamp head 400 .

[0044] In this embodiment, a part of the UV light from the UV lamp head 400 passes through the light-transmitting layer and irradiates the fluorescent layer, where the UV light is converted into infrared light, which can inject light into the battery, thereby improving the efficiency of the battery cell 500; another part of the UV light passes through the convergence of the convex lens 200 and irradiates the glue point, which is used to pre-fix the welding strip. The light-transmitting layer can be made of transparent glass, and the fluorescent layer is made of transparent glass doped with fluorescent material.

[0045] Combination Figure 3 In some embodiments, a plurality of slots 300 are provided on one side of the fixing plate 100 close to the battery cell 500 , and the plurality of slots 300 are used to correspond one to one with the welding strips on the battery cell 500 .

[0046] In this embodiment, the glue point is a fluid colloid before curing, and has a weak adhesive force with the solder strip. During the UV light curing process, the solder strip may be offset, resulting in a weakened welding effect. By setting the card slot 300, the solder strip can be placed in the card slot 300 when the tooling is placed. During the UV light curing process, the solder strip can be prevented from being offset, further improving the production yield of the product.

[0047] An embodiment of the present application discloses a UV curing device, which includes a UV lamp head 400 and auxiliary tooling. The UV lamp head 400 has a light-emitting surface for emitting UV light. The auxiliary tooling is located between the light-emitting surface of the UV lamp head 400 and the battery cell 500.

[0048] In this embodiment, an auxiliary tooling is provided, which includes a fixing plate 100 and a plurality of convex lenses 200 provided on the fixing plate 100. Through the converging effect of the convex lenses 200, the UV light emitted by the UV lamp head 400 can be converged and irradiated on the corresponding glue point position to accelerate the curing of the glue point, reduce the irradiation time of the battery cell 500, and thereby reduce the power drop of the component.

[0049] In some embodiments, a buckle is provided on the fixing plate 100, and the fixing plate 100 is fixed to the UV lamp head 400 by the buckle.

[0050] In this embodiment, the fixing plate 100 is fixed to the UV lamp head 400 by means of buckles, and UV light from the UV lamp head 400 irradiates the glue point through the convex lens 200 to cure the glue point.

[0051] In some other embodiments, buckles are provided on the fixing plate 100, and the fixing plate 100 is used to be fixed on the battery cell 500 by the buckles.

[0052] In this embodiment, the fixing plate 100 is fixed to the battery cell 500 by buckles, and a plurality of slots 300 are provided on one side of the fixing plate 100 close to the battery cell 500, and the plurality of slots 300 are used to correspond to the solder strips on the battery cell 500. The slots 300 are used to limit the position of the solder strips, and the convex lens 200 is used to gather UV light to cure the glue point.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An auxiliary tooling for a UV curing device, characterized in that: Used to be arranged between the UV lamp head and the battery sheet, the auxiliary tooling includes: A fixing plate, on which a plurality of mounting holes are provided; A plurality of convex lenses are arranged in the plurality of mounting holes, and the plurality of convex lenses are used to correspond one-to-one to the glue point positions on the battery sheet. The convex lenses are configured to allow the UV light emitted by the UV lamp head to be converged by the convex lenses and then irradiated to the corresponding glue point positions.

2. The auxiliary tooling of the UV curing device according to claim 1, characterized in that: The mounting hole is a circular hole, and the plurality of convex lenses are arranged in one-to-one correspondence with the plurality of circular holes.

3. The auxiliary tooling of the UV curing device according to claim 1, characterized in that: The mounting hole is an elongated hole, and a plurality of convex lenses are slidably arranged in the same elongated hole.

4. The auxiliary tooling of the UV curing device according to claim 1, characterized in that: The fixing plate comprises a light-proof layer and a light-absorbing layer which are stacked, and the light-proof layer is used to be arranged on a side of the light-absorbing layer close to the UV lamp head.

5. The auxiliary tooling of the UV curing device according to claim 4, characterized in that: The fixing plate comprises a reflective layer, and the reflective layer is arranged on a side of the light-impermeable layer away from the light-absorbing layer.

6. The auxiliary tooling of the UV curing device according to claim 1, characterized in that: The fixing plate comprises a light-transmitting layer and a fluorescent layer which are stacked, and the light-transmitting layer is arranged on a side of the fluorescent layer close to the UV lamp head.

7. The auxiliary tooling of the UV curing device according to claim 1, characterized in that: A plurality of slots are provided on one side of the fixing plate close to the battery cell, and the plurality of slots are used to be arranged in one-to-one correspondence with the welding strips on the battery cell.

8. A UV curing device, characterized in that: The UV curing device comprises a UV lamp head and the auxiliary tooling according to any one of claims 1 to 7, wherein the UV lamp head has a light-emitting surface for emitting UV light, and the auxiliary tooling is located between the light-emitting surface of the UV lamp head and the battery cell.

9. The UV curing device according to claim 8, characterized in that: The fixing plate is provided with a buckle, and the fixing plate is fixed to the UV lamp head by the buckle.

10. The UV curing device according to claim 8, characterized in that: The fixing plate is provided with buckles, and the fixing plate is used to be fixed on the battery sheet through the buckles.

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