Drying and sintering equipment for silk-screen printing
By using multiple laser drying components and sintering components in the manufacturing of solar cell, the problems of high energy consumption and low productivity of traditional electric heating drying and sintering equipment are solved, and more efficient thermal energy utilization and equipment operation efficiency are achieved.
Patent Information
- Application Number
- CN202421181159.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-28
AI Technical Summary
In the manufacturing of existing solar cell cells, traditional electric heating drying and sintering equipment has problems such as high energy consumption, low thermal energy utilization rate and low equipment productivity.
A drying and sintering device for screen printing using multiple laser drying assemblies and multiple laser sintering assemblies is used to realize continuous segmented laser processing of the battery cell through laser drying and sintering treatment.
It significantly reduces energy consumption for drying and sintering, improves thermal energy utilization and equipment productivity, and reduces equipment maintenance time.
Smart Images
Figure CN222571875U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar cell production and manufacturing, in particular to a drying and sintering device for screen printing. Background Art
[0002] At present, in the solar cell manufacturing industry, the traditional electric heating drying slurry and electric heating sintering slurry are used for drying and sintering after the screen printing process. This solution has the following disadvantages: (1) During the drying and sintering process, in order to heat the grid line of the cell, the equipment in this solution heats the entire cell and the air in the equipment cavity, which has high energy consumption and low thermal energy utilization rate; (2) The maintenance of the drying furnace and sintering furnace is time-consuming, which affects the release of equipment production capacity; (3) When the drying furnace and sintering furnace fail and the cavity needs to be opened, the equipment needs to wait for a long time for the cooling process. When the equipment is restored after maintenance, it needs to wait for a long time for the heating process, resulting in low equipment utilization rate.
[0003] Therefore, in view of this, the present utility model is proposed. Utility Model Content
[0004] In view of the above technical problems, the purpose of the utility model is to solve the technical problems of high energy consumption, low thermal energy utilization rate and low equipment utilization rate of drying and sintering equipment in the prior art by proposing a drying and sintering equipment for screen printing.
[0005] The utility model provides a drying and sintering device for screen printing, which comprises a plurality of laser drying components and a plurality of laser sintering components. The plurality of laser drying components are used to sequentially perform laser drying treatment on battery cells after screen printing, and the plurality of laser sintering components are used to sequentially perform laser sintering treatment on battery cells after laser drying treatment.
[0006] In a further solution of the utility model, each of the laser drying components is formed with a laser drying spot, and the plurality of laser drying spots are used to sequentially perform laser drying treatment on the battery cells after screen printing. Each of the laser sintering components is formed with a laser sintering spot, and the plurality of laser sintering spots are used to sequentially perform laser sintering treatment on the battery cells after laser drying treatment. The plurality of laser sintering spots are located on the downstream side of the plurality of laser drying spots in the conveying direction of the battery cells.
[0007] In a further solution of the utility model, the laser drying assembly includes at least one group of drying lasers and drying scanning galvanometers. The drying lasers in each group are used to emit a laser beam, and the drying scanning galvanometers are used to reflect the received laser beam to form a first light spot; at least part of the first light spot in each group is used to form the laser drying light spot.
[0008] In a further solution of the utility model, the drying laser and the drying scanning galvanometer are arranged as a group, and the first light spot in the group forms the laser drying light spot. Alternatively, the drying laser and the drying scanning galvanometer are arranged as multiple groups, and at least part of the first light spots in the multiple groups overlap to form the laser drying light spot.
[0009] In a further solution of the utility model, the emission center of the drying laser of the laser drying assembly is at the same height as the mirror center of the drying scanning galvanometer, and the mirror of the drying scanning galvanometer is inclined relative to the emission direction of the drying laser.
[0010] In a further solution of the utility model, the distance between the drying scanning galvanometers of the plurality of laser drying assemblies and the battery cell is arranged to decrease successively in the conveying direction of the battery cell.
[0011] In a further embodiment of the present invention, the laser sintering assembly includes at least one group of sintering lasers and sintering scanning galvanometers. The sintering lasers in each group are used to emit a laser beam, and the sintering scanning galvanometers are used to reflect the received laser beam to form a second light spot; at least part of the second light spot in each group is used to form the laser sintering light spot.
[0012] In a further solution of the utility model, the distance between the sintering scanning galvanometers of the plurality of laser sintering assemblies and the battery cell is arranged to decrease sequentially in the conveying direction of the battery cell.
[0013] In a further solution of the utility model, the drying and sintering equipment also includes a furnace body, and a plurality of the laser drying components and a plurality of the laser sintering components are arranged in the furnace body.
[0014] In a further solution of the utility model, the drying and sintering equipment also includes a transmission mechanism and an exhaust assembly. The transmission mechanism is located above or below the furnace body in the height direction, and the transmission mechanism is used to make the screen-printed battery sheet pass through multiple laser drying spot positions and multiple laser sintering spot positions in sequence along the conveying direction. The exhaust assemblies are arranged in pairs, and the two exhaust assemblies arranged in pairs are located on both sides of a corresponding battery sheet in the width direction, and are used to extract the exhaust gas in the furnace body, and the width direction, the height direction and the conveying direction are perpendicular to each other.
[0015] In summary, the drying and sintering equipment for screen printing provided by the utility model has at least the following beneficial effects:
[0016] In the drying and sintering equipment for screen printing of the utility model, since each laser drying component can perform laser drying treatment on the battery cell, and each laser sintering component can perform laser sintering treatment on the battery cell, and based on the sequential cooperation of multiple laser drying components, continuous segmented laser drying treatment of the battery cell can be achieved, and based on the sequential cooperation of multiple laser sintering components, continuous segmented laser sintering treatment of the battery cell can be achieved, therefore, compared with traditional electric heating drying and sintering technology, the drying and sintering equipment for screen printing of the utility model significantly reduces the energy consumption of drying and sintering, and on the premise of ensuring the sintering quality of the battery cell, improves the utilization rate of thermal energy, reduces the time consumption of equipment maintenance, and improves the equipment utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 It is a schematic diagram of the structure of the drying and sintering equipment for screen printing of the utility model;
[0019] Figure 2 It is a schematic diagram of the positional relationship of multiple laser drying components in the utility model;
[0020] Figure 3 It is a schematic diagram of the positional relationship of multiple laser sintering components in the utility model;
[0021] Figure 4 It is a schematic diagram of the positional relationship between the exhaust assembly and the battery cell in the present invention.
[0022] The reference numerals are described as follows:
[0023] 10. Laser drying assembly; 10A. First laser drying assembly; 10B. Second laser drying assembly; 11. Drying laser; 12. Drying scanning galvanometer;
[0024] 20. Laser sintering assembly; 20A. First laser sintering assembly; 20B. Second laser sintering assembly; 20C. Third laser sintering assembly; 21. Sintering laser; 22. Sintering scanning galvanometer;
[0025] 30. furnace body; 40. transmission mechanism; 50. exhaust assembly; A. battery cell;
[0026] W, width direction; L, conveying direction; H, height direction. DETAILED DESCRIPTION
[0027] The terms "height direction", "width direction", "conveying direction", "inside", "outside", "above", "below" and the like that appear below to indicate directions or positional relationships, unless otherwise specified, are to be understood as being based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0028] In addition, if there are features defined as "first" or "second", they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Features defined as "first" or "second" may explicitly or implicitly include at least one of the defined features. If there are descriptions of "multiple" or "multiple groups", "multiple" generally means at least two, such as two, three, etc., and "multiple groups" also means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0029] In this utility model, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix" and so on 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 it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.
[0030] In the description of this specification, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0031] Reference Figures 1 to 3The drying and sintering equipment for screen printing of the utility model comprises a plurality of laser drying components 10 and a plurality of laser sintering components 20. The plurality of laser drying components 10 are used to sequentially perform laser drying treatment on the battery cells A after screen printing, and the plurality of laser sintering components 20 are used to sequentially perform laser sintering treatment on the battery cells A after laser drying treatment.
[0032] The cell A may be an N-type cell or a P-type cell. Specifically, the cell A may be a metal sheet (such as a silicon sheet), and a grid line is formed on the cell A through a screen printing process. Specifically, the material for preparing the grid line may be a metal paste such as silver paste, aluminum paste, silver aluminum paste or copper paste, or a pure metal material such as silver, aluminum, copper, titanium, palladium.
[0033] The laser drying component 10 can perform laser drying on the grid lines on the battery cell A based on laser processing technology, and the laser sintering component 20 can also perform laser sintering on the grid lines on the battery cell A based on laser processing technology, thereby achieving drying and sintering of the grid lines on the battery cell A after screen printing.
[0034] In the drying and sintering equipment for screen printing of the present invention, since each laser drying component 10 can perform laser drying treatment on the battery cell A, and each laser sintering component 20 can perform laser sintering treatment on the battery cell A, and multiple laser drying components 10 cooperate with each other in succession to achieve continuous segmented laser drying treatment on the battery cell A, and multiple laser sintering components 20 cooperate with each other in succession to achieve continuous segmented laser sintering treatment on the battery cell A, compared with traditional electric heating drying and sintering technology, the drying and sintering equipment for screen printing of the present invention significantly reduces the energy consumption of drying and sintering, and on the premise of ensuring the sintering quality of the battery cell A, it improves the utilization rate of thermal energy, reduces the time consumption of equipment maintenance, and improves the equipment utilization rate.
[0035] In some embodiments, reference Figure 1 , two laser drying components 10 can be arranged in sequence, and three laser sintering components 20 can be arranged in sequence. After the printing of the cell A is completed, the two laser drying components 10 sequentially perform laser drying treatment on the cell A. Specifically, the first laser drying component 10 scans the grid lines of the cell A to remove organic matter in the grid lines; the second laser drying component 10 scans the grid lines of the cell A again to solidify the grid lines. After continuous laser drying treatment by the two laser drying components 10, the dried cell A can be obtained, thereby completing the drying of the grid lines of the cell A.
[0036] When the grid lines of the battery cell A are dried, the three laser sintering components 20 perform laser sintering treatment on the battery cell A in turn. Specifically, the first laser sintering component 20 scans the grid lines of the battery cell A to remove organic matter in the grid lines. The second laser sintering component 20 then scans the grid lines of the battery cell A to melt the grid lines (such as melting the grid line slurry by gradually increasing the temperature to etch through the SiN layer). The third laser sintering component 20 scans the grid lines of the battery cell A again to precipitate metal particles in the grid lines (such as silver particles, which can be precipitated by gradually decreasing the temperature to achieve ohmic contact between the silver in the grid lines and the silicon in the battery cell A). After continuous laser sintering treatment by the three laser sintering components 20, the sintered battery cell A can be obtained.
[0037] Therefore, through the above-mentioned continuous two-stage laser drying treatment and continuous three-stage laser sintering treatment, compared with the traditional electric heating drying and sintering technology, the utility model significantly reduces the energy consumption of drying and sintering, and on the premise of ensuring the sintering quality of battery cell A, it improves the utilization rate of thermal energy, reduces the time consumption of equipment maintenance, and improves the equipment utilization rate.
[0038] In the specific laser drying process, each laser drying component 10 forms a laser drying spot, and multiple laser drying spots sequentially laser dry the gate lines on the screen-printed battery cell A, and the area of each laser drying spot needs to be ensured to be within the line width range of the gate lines on the battery cell A.
[0039] In the specific laser sintering process, each laser sintering assembly 20 is formed with a laser sintering spot, and the multiple laser sintering spots are used to sequentially laser sinter the grid lines on the cell A after the laser drying process, and the area of each laser sintering spot also needs to be ensured to be within the line width range of the grid lines on the cell A. Among them, the multiple laser sintering spots are located on the downstream side of the multiple laser drying spots in the conveying direction L of the cell A.
[0040] It should be noted that no matter how the multiple laser drying components 10 and the multiple laser sintering components 20 are arranged, it is sufficient to ensure that the multiple laser sintering spots are located on the downstream side of the multiple laser drying spots in the conveying direction L of the battery cell A, so that each laser drying component 10 can complete the laser drying process of the gate lines on the battery cell A before the multiple laser sintering components 20.
[0041] Specifically, multiple laser drying assemblies 10 and multiple laser sintering assemblies 20 can be arranged at intervals along the height direction H, and the multiple laser sintering assemblies 20 are located between the multiple laser drying assemblies 10 and the battery cells A in the height direction H, wherein the height direction H is perpendicular to the conveying direction L.
[0042] Here, multiple laser drying components 10 and multiple laser sintering components 20 form an upper and lower distribution structure in the height direction H, that is, all laser drying components 10 are in the upper area, and all laser sintering components 20 are in the lower area, and the multiple laser drying components 10 in the upper area and the multiple laser sintering components 20 in the lower area are all distributed in a stacked manner in the height direction H, which can reasonably utilize the space in the height direction H of the equipment, so that the multiple laser drying components 10 and the multiple laser sintering components 20 do not interfere with each other, thereby not only significantly improving the space utilization rate of the equipment, but also ensuring that the heat energy generated by each laser drying component 10 and each laser sintering component 20 can be fully utilized, thereby improving the thermal energy utilization rate and equipment utilization rate of the equipment.
[0043] Reference Figure 2 Each laser drying assembly 10 may include at least one group of drying lasers 11 and drying scanning galvanometers 12. The drying lasers 11 in each group are used to emit a laser beam, and the drying scanning galvanometers 12 are used to receive and reflect the laser beam emitted by the drying lasers 11 to form a first light spot, and at least part of the first light spot in each group is used to form a laser drying light spot.
[0044] Specifically, in some embodiments, the drying laser 11 and the drying scanning galvanometer 12 in each laser drying component 10 are set as a group, and the first light spot formed in the group as a whole (that is, all the first light spots) form a laser drying light spot. In other words, the first light spot formed in the group is a laser drying light spot. In other embodiments, the drying laser 11 and the drying scanning galvanometer 12 in each laser drying component 10 are set as multiple groups, each group has a first light spot, and at least part of the first light spots in the multiple groups overlap to form a laser drying light spot, that is, the overlapping parts of multiple first light spots (such as full overlap or partial overlap) are used to form a laser drying light spot. Specifically, according to specific drying requirements, by using multiple groups of drying lasers 11 and drying scanning galvanometers 12 in combination, the energy of the laser drying light spot can be significantly improved.
[0045] In each laser drying assembly 10, the emission center of the drying laser 11 in the same group is at the same height as the mirror center of the drying scanning galvanometer 12, and the mirror of the drying scanning galvanometer 12 is tilted relative to the emission direction of the drying laser 11 (i.e., the emission direction of the drying laser 11 intersects with the mirror normal of the drying scanning galvanometer 12). Such an arrangement can ensure that after receiving the laser beam emitted by the drying laser 11, the drying scanning galvanometer 12 can reflect the laser beam to the line width range of the grid line on the battery cell A at the laser drying station (i.e., the laser drying spot position) and form a laser drying spot.
[0046] In some embodiments, the distance between the drying scanning galvanometers 12 of the multiple laser drying components 10 and the battery cell A is sequentially reduced in the conveying direction L of the battery cell A. For the multiple laser drying components 10, the multiple drying scanning galvanometers 12 are stacked and distributed in the height direction H and sequentially arranged from top to bottom, and the multiple drying scanning galvanometers 12 sequentially reflect the laser beam to the grid line on the battery cell A from top to bottom and form a first light spot, which can reasonably utilize the space in the height direction H of the equipment, so that the multiple laser drying components 10 do not interfere with each other, thereby not only significantly improving the equipment space utilization rate, but also ensuring that the heat energy generated by each laser drying component 10 can be fully utilized, thereby improving the equipment heat energy utilization rate and equipment utilization rate.
[0047] Specifically, the plurality of laser drying components 10 include a first laser drying component 10A and a second laser drying component 10B, and the laser drying spot of the first laser drying component 10A is located on the upstream side of the laser drying spot of the second laser drying component 10B in the conveying direction L of the battery cell A. The distance between the drying scanning galvanometer 12 of the first laser drying component 10A and the battery cell A is greater than the distance between the drying scanning galvanometer 12 of the second laser drying component 10B and the battery cell A.
[0048] In the conveying direction L of the cell A, the drying scanning galvanometer 12 of the first laser drying assembly 10A is arranged upstream, and the drying scanning galvanometer 12 of the second laser drying assembly 10B is arranged downstream, so that the laser drying spot of the first laser drying assembly 10A is located upstream of the laser drying spot of the second laser drying assembly 10B in the conveying direction L of the cell A. In addition, the drying scanning galvanometer 12 on the upstream side is arranged above the drying scanning galvanometer 12 on the downstream side in the height direction H, thereby realizing the sequential processing of the grid lines on the cell A by the multiple laser drying assemblies 10.
[0049] In some embodiments, the power of the first laser 11 of the first laser drying assembly 10A is 0.1-10.0 W, the spot diameter is 10-200 μm, the wavelength range is 400-1100 nanometers, and the laser scanning speed is 5-21 m / s.
[0050] In some embodiments, the power of the first laser 11 of the second laser drying assembly 10B is 1.0-100.0 W, the spot diameter is 10-200 μm, the wavelength range is 400-1100 nanometers, and the laser scanning speed is 5-21 m / s.
[0051] Reference Figure 3The laser sintering assembly 20 may include at least one group of sintering lasers 21 and sintering scanning galvanometers 22. The sintering lasers 21 in each group are used to emit a laser beam, and the sintering scanning galvanometers 22 are used to reflect the laser beam emitted by the sintering lasers 21 to form a second light spot. At least part of the second light spot in each group is used to form a laser sintering light spot.
[0052] Specifically, in some embodiments, the sintering laser 21 and the sintering scanning galvanometer 22 in each laser sintering component 20 are set as a group, and the second light spot formed in the group as a whole (that is, all the second light spots) form a laser sintering spot. In other words, the second light spot formed in the group is a laser sintering spot. In other embodiments, the sintering laser 21 and the sintering scanning galvanometer 22 in each laser sintering component 20 are set as multiple groups, each group is formed with a second light spot, and at least part of the second light spots in the multiple groups overlap to form a laser sintering spot, that is, the overlapping part of multiple second light spots (such as full overlap or partial overlap) is used to form a laser sintering spot. Specifically, according to specific sintering requirements, by using multiple groups of sintering lasers 21 and sintering scanning galvanometers 22 in combination, the energy of the laser sintering spot can be significantly improved.
[0053] In some embodiments, the distance between the sintering scanning galvanometers 22 of the multiple laser sintering assemblies 20 and the battery cell A is sequentially reduced in the conveying direction L of the battery cell A. For the multiple laser sintering assemblies 20, the multiple sintering scanning galvanometers 22 are stacked and distributed in the height direction H and sequentially arranged from top to bottom, and the multiple sintering scanning galvanometers 22 sequentially reflect the laser beam to the grid line on the battery cell A from top to bottom and form a second light spot, which can reasonably utilize the space in the height direction H of the equipment, so that the multiple laser sintering assemblies 20 do not interfere with each other, thereby not only significantly improving the equipment space utilization rate, but also ensuring that the heat energy generated by each laser sintering assembly 20 can be fully utilized, thereby improving the equipment heat energy utilization rate and equipment utilization rate.
[0054] Specifically, the plurality of laser sintering assemblies 20 include a first laser sintering assembly 20A, a second laser sintering assembly 20B, and a third laser sintering assembly 20C. The laser sintering spot of the second laser sintering assembly 20B is located on the downstream side of the laser sintering spot of the first laser sintering assembly 20A and the upstream side of the laser sintering spot of the third laser sintering assembly 20C in the conveying direction L of the battery cell A. The distances between the first sintering scanning galvanometer mirrors 22 of the first laser sintering assembly 20A, the second laser sintering assembly 20B, and the third laser sintering assembly 20C and the battery cell A are successively reduced.
[0055] In the conveying direction L of the cell A, the sintering scanning galvanometers 22 of the first laser sintering assembly 20A, the second laser sintering assembly 20B and the third laser sintering assembly 20C are sequentially arranged so that the laser sintering spot of the second laser sintering assembly 20B is located on the downstream side of the laser sintering spot of the first laser sintering assembly 20A and the upstream side of the laser sintering spot of the third laser sintering assembly 20C in the conveying direction L of the cell A. In addition, the sintering scanning galvanometer 22 on the upstream side is located above the sintering scanning galvanometer 22 on the downstream side in the height direction H, thereby realizing the sequential processing of the grid lines on the cell A by multiple laser sintering assemblies 20.
[0056] In some embodiments, the power of the second laser 21 of the first laser sintering assembly 20A is 0.1-10.0 W, the spot diameter is 10-200 μm, the wavelength range is 400-1100 nanometers, and the laser scanning speed is 5-21 m / s.
[0057] In some embodiments, the power of the second laser 21 of the second laser drying assembly 10B and the third laser sintering assembly 20C is 1.0-100.0 W, the spot diameter is 10-200 μm, the wavelength range is 400-1100 nanometers, and the laser scanning speed is 5-21 m / s.
[0058] In some embodiments, reference Figure 1 The drying and sintering equipment of the present invention further comprises a furnace body 30, wherein the plurality of laser drying assemblies 10 and the plurality of laser sintering assemblies 20 are disposed in the furnace body 30. Here, since the plurality of laser drying assemblies 10 and the plurality of laser sintering assemblies 20 share the same furnace body 30, the equipment structure is simplified and the space utilization rate in the furnace body 30 is improved.
[0059] In some embodiments, reference Figure 4 The drying and sintering equipment of the present invention further includes a transmission mechanism 40 and an exhaust assembly 50 .
[0060] Specifically, the transmission mechanism 40 can be located above or below the furnace body 30 in the height direction H, and a plurality of screen-printed battery cells A can be placed on the transmission mechanism 40 at intervals, so that each battery cell A can pass through a plurality of laser processing stations in sequence along the conveying direction L to achieve continuous processing. Among them, the plurality of laser processing stations include a plurality of laser drying stations and a plurality of laser sintering stations. Each laser drying station can receive a laser drying spot emitted by a corresponding laser drying component 10, and each laser sintering station can receive a laser sintering spot emitted by a corresponding laser sintering component 20. In other words, under the action of the transmission mechanism 40, the screen-printed battery cell A can pass through the positions of a plurality of laser drying spots and a plurality of laser sintering spots in sequence along the conveying direction L.
[0061] Therefore, based on the cooperation between the transmission mechanism 40 and multiple laser drying components 10 and multiple laser sintering components 20, continuous segmented laser drying processing and continuous segmented laser sintering processing of the battery cell A are realized, thereby significantly reducing the energy consumption of drying and sintering. On the premise of ensuring the sintering quality of the battery cell A, the thermal energy utilization rate is improved, the equipment maintenance time is reduced, and the equipment utilization rate is improved.
[0062] The exhaust assemblies 50 are arranged in pairs, and the two exhaust assemblies 50 arranged in pairs are located on both sides of a corresponding battery cell A along the width direction W, and are used to extract the exhaust gas in the furnace body 30. Among them, the width direction W, the height direction H and the conveying direction L are perpendicular to each other. Specifically, taking the battery cell A placed in the device as a reference object, the conveying direction L is the movement direction of multiple battery cells A, the width direction W can be the width direction of the battery cell A, and the height direction H is the thickness direction of the battery cell A.
[0063] The various technical features described above can be combined arbitrarily. Although all possible combinations of these technical features are not described, any combination of these technical features should be considered to be covered by this specification as long as there is no contradiction in such combination.
[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still adjust the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these adjustments or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A drying and sintering device for screen printing, characterized in that: It comprises a plurality of laser drying components (10) and a plurality of laser sintering components (20); The plurality of laser drying components (10) are used to sequentially perform laser drying treatment on the battery cells (A) after screen printing, and the plurality of laser sintering components (20) are used to sequentially perform laser sintering treatment on the battery cells (A) after laser drying treatment.
2. The drying and sintering equipment for screen printing according to claim 1, characterized in that: Each of the laser drying components (10) is formed with a laser drying spot, and the plurality of laser drying spots are used to sequentially perform laser drying treatment on the screen-printed battery cells (A); Each of the laser sintering components (20) is formed with a laser sintering spot, and the plurality of laser sintering spots are used to sequentially perform laser sintering on the battery cells (A) after laser drying; The plurality of laser sintering spots are located on the downstream side of the plurality of laser drying spots in the conveying direction (L) of the battery sheet (A).
3. The drying and sintering equipment for screen printing according to claim 2, characterized in that: The laser drying component (10) comprises at least one set of drying lasers (11) and drying scanning galvanometers (12); The drying laser (11) in each group is used to emit a laser beam, and the drying scanning galvanometer (12) is used to reflect the received laser beam to form a first light spot; At least part of the first light spots in each group is used to form the laser drying light spots.
4. The drying and sintering equipment for screen printing according to claim 3, characterized in that: The drying laser (11) and the drying scanning galvanometer (12) are arranged as a group, and the first light spot in the group forms the laser drying light spot; or The drying laser (11) and the drying scanning galvanometer (12) are arranged in multiple groups, and at least part of the first light spots in the multiple groups overlap to form the laser drying light spots.
5. The drying and sintering equipment for screen printing according to claim 3, characterized in that: The emission center of the drying laser (11) of the laser drying component (10) and the mirror center of the drying scanning galvanometer (12) are at the same height; The mirror surface of the drying scanning galvanometer (12) is arranged to be inclined relative to the emission direction of the drying laser (11).
6. The drying and sintering equipment for screen printing according to claim 3, characterized in that: The distances between the drying scanning galvanometers (12) of the plurality of laser drying components (10) and the battery sheet (A) are arranged to decrease in sequence in the conveying direction (L) of the battery sheet (A).
7. The drying and sintering equipment for screen printing according to claim 2, characterized in that: The laser sintering assembly (20) comprises at least one set of sintering lasers (21) and sintering scanning galvanometers (22); The sintering laser (21) in each group is used to emit a laser beam, and the sintering scanning galvanometer (22) is used to reflect the received laser beam to form a second light spot; At least part of the second light spots in each group is used to form the laser sintering light spots.
8. The drying and sintering equipment for screen printing according to claim 7, characterized in that: The distances between the sintering scanning galvanometers (22) of the plurality of laser sintering assemblies (20) and the battery cell (A) are arranged to decrease in sequence in the conveying direction (L) of the battery cell (A).
9. The drying and sintering equipment for screen printing according to any one of claims 2 to 8, characterized in that: The drying and sintering equipment further comprises a furnace body (30), and a plurality of the laser drying components (10) and a plurality of the laser sintering components (20) are arranged in the furnace body (30).
10. The drying and sintering equipment for screen printing according to claim 9, characterized in that: The drying and sintering equipment also includes a transmission mechanism (40) and an exhaust assembly (50); The transmission mechanism (40) is located above or below the furnace body (30) in the height direction (H), and the transmission mechanism (40) is used to allow the screen-printed battery sheet (A) to pass through the plurality of laser drying spot positions and the plurality of laser sintering spot positions in sequence along the conveying direction (L); The exhaust assemblies (50) are arranged in pairs, and the two exhaust assemblies (50) arranged in pairs are located on both sides of a corresponding battery cell (A) along the width direction (W) and are used to extract exhaust gas from the furnace body (30).