CN218241868U

CN218241868U - Light injection lamination apparatus

Info

Publication number: CN218241868U
Application number: CN202220896962.XU
Authority: CN
Inventors: 段军; 彭福国; 曲铭浩
Original assignee: Xian Longi Solar Technology Co Ltd
Current assignee: Xian Longi Solar Technology Co Ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2023-01-06
Anticipated expiration: 2032-04-18

Abstract

The application discloses light injection lamination equipment belongs to solar module equipment technical field. The battery pack laminating device comprises a first cavity and a second cavity, wherein the first cavity and the second cavity are oppositely arranged, so that the first cavity and the second cavity are encircled to form a laminating cavity, and the laminating cavity is used for accommodating a battery pack to be pre-laminated; at least one of the first cavity and the second cavity is provided with a light injection device, and the light injection device is used for emitting light to the battery assembly so as to realize light injection to the battery assembly. The embodiment of the application has the beneficial effect of remarkably improving the power of the battery assembly by starting to inject light into the battery assembly before the battery assembly is laminated.

Description

Light injection lamination apparatus

Technical Field

The application belongs to the technical field of solar cell module equipment, and particularly relates to light injection lamination equipment.

Background

Clean energy is one of effective ways for solving the problems of energy shortage and environmental pollution, and the solar cell directly converts light energy into electric energy, so that the solar cell is ideal renewable energy in the future. The silicon heterojunction solar cell has high conversion efficiency and relatively low production cost, and has higher and higher occupancy rate in the photovoltaic power generation market.

In the prior art, the light injection device has a remarkable improvement function on the efficiency of the heterojunction solar cell, and the efficiency of the heterojunction solar cell is obviously improved after light injection.

However, it is found through research that the efficiency of the heterojunction solar cell after light injection is reduced and even restored to the level before light injection when the heterojunction solar cell is annealed again. The heterojunction solar cell is heated by infrared illumination of a stringer in the process of manufacturing a component, the efficiency of a cell is attenuated after lamination heating, the CTM (percentage of the total output power and the cell power) of the component is low, the power of the cell component does not reach the standard, and the cost control and processing production of the cell component are seriously influenced.

SUMMERY OF THE UTILITY MODEL

The purpose of the embodiment of the application is to provide a light injection lamination equipment, thereby can solve the problem that the efficiency of a battery pack attenuates after light is injected to influence the power output of the pack in the prior art.

In order to solve the technical problem, the present application is implemented as follows:

the embodiment of the application provides a light injection laminating device, which comprises a first cavity and a second cavity, wherein the first cavity and the second cavity are oppositely arranged, so that the first cavity and the second cavity surround to form a laminating cavity, and the laminating cavity is used for accommodating a battery assembly;

at least one of the first chamber and the second chamber is provided with a light injection device for emitting light to the battery assembly.

The laminating apparatus of the battery module is used to apply a certain pressure to the outer surfaces of the respective materials and tightly press the materials together in a heated state. In an embodiment of the present application, there is provided a laminating apparatus provided with a light injection device, where the light injection device is configured to emit light to a battery assembly before laminating the battery assembly, so that light injection to the battery assembly is started before laminating the battery assembly. The method has the advantages of remarkably improving the power of the battery assembly, and in addition, the light injection equipment of the battery assembly can be further cancelled, so that the production cost of the battery assembly is reduced.

Drawings

Fig. 1 is a schematic structural view of a light injection lamination apparatus in an embodiment of the present application;

FIG. 2 is a schematic view of the second chamber shown in bottom view at the lamination chamber position in an embodiment of the present application;

FIG. 3 is a schematic diagram of a first chamber structure viewed from above at a lamination chamber position in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a support structure in an embodiment of the present application.

Description of reference numerals:

10. a first chamber; 20. a second chamber; 30. a lamination chamber; 40. a light injection device; 41. a first light injection device; 411. a first light source assembly; 4111. a first lamp tube; 412. a first light-transmitting table; 42. a second light injection device; 421. a second light source assembly; 4211. a second lamp tube; 422. a second light-transmitting table; 423. a support structure; 4231. an extension member.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The light injection lamination device provided by the embodiment of the present application is described in detail by specific embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 1 to 4, an embodiment of the present application provides a light injection lamination apparatus, including a first chamber 10 and a second chamber 20, where the first chamber 10 and the second chamber 20 are disposed opposite to each other, the first chamber 10 and the second chamber 20 surround to form a lamination chamber 30, and the lamination chamber 30 is used for accommodating a pre-laminated battery assembly;

at least one of the first chamber 10 and the second chamber 20 is provided with a light injection means 40, and the light injection means 40 is used to emit light to the battery assembly.

The laminating apparatus of the battery module is used to apply a certain pressure to the outer surfaces of the respective materials and tightly press the materials together in a heated state. In the embodiment of the present application, a laminating apparatus provided with a light injection device 40 is provided, and includes a first chamber 10 and a second chamber 20, the first chamber 10 and the second chamber 20 surround to form a laminating cavity 30, and the laminating cavity 30 is configured to accommodate a battery assembly. When the light injection lamination apparatus laminates the battery assembly, the battery assembly is placed in the lamination chamber 30, and the light injection lamination apparatus applies a certain pressure to the exterior of the battery assembly, i.e., performs a lamination operation on the battery assembly. The light injection device 40 is arranged to emit light to the battery pack by the light injection device 40 when the battery pack is laminated by the light injection laminating apparatus, so that light injection to the battery pack is started before the battery pack is laminated. The light injection device has the beneficial effects that the power of the battery assembly is obviously improved by injecting light into the battery assembly, and in addition, the light injection device of the battery assembly can be further cancelled, so that the production cost of the battery assembly is reduced.

In practical applications, the pre-laminated battery module may be subjected to double-sided light injection, or may be subjected to light injection on any side as required. After the vacuum-pumping stage is finished, the laminating and pressurizing process for the battery assembly is started, and at this time, whether to continue or stop the light injection may be selected according to the process requirements, which is not limited in this embodiment.

It should be further noted that, by performing light injection on the battery assembly during the lamination process, efficiency attenuation of the battery assembly after light injection is effectively avoided, and the CTM of the assembly is prevented from being reduced. Meanwhile, the power of the battery pack can be improved by 7 w-10 w due to light injection, and the benefit of the battery pack is improved.

Alternatively, as shown in fig. 1 and 2, in the embodiment of the present disclosure, the first chamber 10 is provided with a first light injection device 41, the first light injection device 41 includes a first light source assembly 411 and a first transparent worktable 412, the first light source assembly 411 is connected to the first transparent worktable 412, and the first transparent worktable 412 is disposed at a side close to the second chamber 20;

the light emitted by the first light source assembly 411 is irradiated into the lamination chamber 30 through the first light-transmitting stage 412.

In the embodiment of the present application, the first light source assembly 411 is disposed to emit light for providing a light injection light source for the light injection lamination apparatus. The first light-transmitting workbench 412 is arranged to irradiate light through the first light source assembly 411 before the lamination process so as to enable the light to enter the lamination cavity 30, thereby achieving the purpose of injecting light into the battery assembly pre-laminated in the lamination cavity 30. The embodiment of the application has the beneficial effect of remarkably improving the power of the battery pack by injecting light into the battery pack.

It should be noted that the first light-transmitting worktable 412 may be transparent silicone, and when the light injection lamination device is used to laminate the battery assembly, the maximum compression ratio of the transparent silicone is 85%; the first light transmissive stage 412 may also be clear glass. Specifically, the first transparent working table 412 may be made of a transparent high temperature-resistant material with certain strength, which is not limited in this embodiment.

It should be further noted that the first light source assembly 411 may be separately controlled in blocks in a block mode to achieve flexible control of the first light source assembly 411 so that the entire effective lamination area of the battery assembly is uniformly irradiated with light, thereby improving flexibility and accuracy of light injection in the light injection lamination apparatus.

Alternatively, as shown in fig. 1 and 3 in the embodiment of the present application, the second chamber 20 includes a second light injection device 42, the second light injection device 42 includes a second light source assembly 421 and a second transparent worktable 422, the second light source assembly 421 is connected to the second transparent worktable 422, and the second transparent worktable 422 is disposed near one side of the first chamber 10; the light emitted from the second light source assembly 421 is irradiated into the lamination chamber 30 through the second light-transmitting table 422;

wherein, the second light source assembly 421 is also used for heating the battery assembly.

In the present embodiment, the second light source assembly 421 is configured to emit light for providing a light source for the light injection lamination apparatus. The second printing opacity workstation 422 sets up and is used for passing through first light source subassembly 411 illumination for in light irradiation gets into lamination chamber 30, and then the realization carries out the purpose that light injected to the battery pack of the prelaminated of placing in lamination chamber 30. The direct red light heating effect is achieved for the battery plates such as the heterojunction, energy can be effectively saved, welding between the battery plates and the welding strip can be optimized, welding adhesion capacity and contact are improved, and power and reliability of the assembly are effectively improved. The embodiment of the application has the beneficial effect of remarkably improving the power of the battery pack by injecting light into the battery pack.

It should be noted that the second light-transmitting worktable 422 may be transparent silica gel, and when the light injection lamination device is used to laminate the battery assembly, the maximum compression ratio of the transparent silica gel is 85%; the second light transmissive stage 422 may also be transparent glass. Specifically, the second transparent stage 422 may be made of a transparent high temperature resistant material with certain strength, which is not limited in this embodiment.

It should be noted that the second light source assembly 421 can be controlled separately in blocks by using the block mode, so as to achieve flexible control of the second light source assembly 421, so that the entire effective lamination area of the battery assembly is uniformly irradiated by light, thereby improving flexibility and accuracy of light injection of the light injection lamination apparatus.

It should be further noted that the second light source assembly 421 is also used for heating the battery assembly, so that energy can be effectively saved, welding between the battery plates and the welding strips in the battery assembly can be optimized, welding adhesion capability and contact are improved, and power and reliability of the battery assembly are effectively improved.

Optionally, in this embodiment, the first light source assembly 411 includes a plurality of first light tubes 4111 arranged in an array, and a distance between the plurality of first light tubes 4111 and the surface of the first light injection device 41 near the second chamber 20 is 100mm to 200mm.

In this embodiment, a plurality of first lamp tubes 4111 are arranged to provide a light source for light injection of the cell assembly, and a plurality of first lamp tubes 4111 arranged in an array can realize more uniform light injection to the cell assembly, and the surface distance between the plurality of first lamp tubes 4111 and the first light injection device 41 close to the second chamber 20 is 100mm to 200mm, which can enlarge the range of light radiation. The embodiment of the application can enable the lamination area in a larger range to be uniformly radiated by light, and has the beneficial effects of improving the light injection efficiency of the light injection lamination equipment and further improving the power of the battery pack.

It should be noted that, in practical use, the array arrangement of the plurality of first lamp tubes 4111 may be designed according to the size of the light injection lamination device, the light intensity and the uniformity of the light source. Specifically, 30 to 50 first lamps 4111 may be disposed in a unit area.

It should be noted that the unit area may be adjusted according to the size of the light injection lamination device, which is not limited in this embodiment.

Optionally, in this embodiment, the spectral range of the plurality of first lamp tubes 4111 is 300nm to 760nm, and the power of the single first lamp tube 4111 is 50w to 1000w.

In the embodiment of the present application, the first lamp 4111 with a spectral range of 300nm to 760nm is used to emit light to the battery pack, and the single first lamp 4111 with a power of 50w to 1000w can satisfy the requirement that the entire laminated area is irradiated by the light emitted by the plurality of first lamps 4111, so as to achieve light injection to the battery pack.

It should be noted that the first lamp 4111 may be an LED lamp or any light source satisfying a spectral range of 300nm to 760nm, which is not limited in this embodiment.

Optionally, in this embodiment of the present application, the second light source assembly 421 includes a plurality of second light tubes 4211 arranged in an array, a spectral range of the plurality of second light tubes 4211 is greater than or equal to 750nm, and a power of a single second light tube 4211 is 1kw to 1.5kw.

In the embodiment of the present application, the plurality of second lamp tubes 4211 are arranged to provide a light source, and the plurality of second lamp tubes 4211 arranged in an array can achieve more uniform light injection into the battery assembly. And the light source that wavelength spectral range is greater than 750nm such as can be to battery pack emission light, simultaneously can also heat battery pack, can advance infrared heating function to battery pack when the lamination, can also provide the heat that needs when battery pack laminates simultaneously, practiced thrift the energy. Whereas the power of the single second lamp tube 4211 is 1kw-1.5kw, it is sufficient that the entire effective laminated area is uniformly irradiated with light. The embodiment of the application can enable the lamination area in a larger range to be uniformly radiated by light, and has the advantages of improving the light injection efficiency of the light injection lamination equipment, improving the power of a battery pack and saving heating energy.

It should be noted that the second lamp tube 4211 may be an infrared lamp tube, a ruby lamp tube, or another light source satisfying the requirement of the spectral range being greater than or equal to 750nm, which is not limited in this embodiment.

Optionally, in the embodiment of the present application, the distance between the plurality of second light tubes 4211 is 10mm to 30mm.

In the embodiment of the present application, the interval of 10mm to 30mm may satisfy the condition that the light emitted from the plurality of second lamp tubes 4211 is uniformly radiated throughout the effective lamination area. The embodiment of the application has the beneficial effects that the light injection uniformity is improved, and then the power of the battery component is improved.

Optionally, in this embodiment, the plurality of second lights are heating light tubes, and the plurality of second light tubes 4211 are used for heating the battery assembly.

In this application embodiment, the setting of heating fluorescent tube is used for heating battery pack and then when the lamination, can play the effect of direct red light heating to battery pieces such as heterojunction, can practice thrift the heating energy effectively.

It should be noted that, in the preparation process of the battery pack, the series-parallel connection of the battery pieces is performed by adopting a welding mode, the welding temperature can reach 180 ℃ to 350 ℃, the microstructure of the battery pack can be affected by the welding high temperature, the efficiency of the battery pack is attenuated, and the problems that the CTM of the battery pack is low and the power of the battery pack does not reach the standard are caused. And carry out the light injection to battery pack and handle in the lamination, show and improve the passivation effect of amorphous silicon to the heterojunction battery, promote battery pack's conversion efficiency, solved because of the abominable problem that welding and lamination high temperature brought battery pack passivation effect and conversion efficiency to optimized the welding between battery pack and the solder strip, had the beneficial effect that promotes welding adhesion ability, improvement battery pack power and battery pack reliability.

Optionally, as shown in fig. 1, fig. 3 and fig. 4, in the embodiment of the present application, a retractable supporting structure 423 is disposed on a side of the light injection device 40 close to the laminating cavity 30, and the supporting structure 423 can be controllably extended or retracted to the inner wall of the first cavity or the second cavity.

In the present embodiment, the support structure 423 is configured to support a battery assembly placed in the lamination chamber 30. After entering the laminating cavity 30, the battery assembly is in contact with the inner wall of the first cavity 10 or the inner wall of the second cavity 20, so that if the battery assembly is directly placed on the inner wall of the first cavity 10 or the inner wall of the second cavity 20, the optical path emitted by the first lamp tube 4111 or the second lamp tube 4211 is short, and light rays of the first lamp tube 4111 or the second lamp tube 4211 are not emitted, so that the light rays can only act in a small area range on the battery assembly, energy is wasted, and a good light injection effect cannot be obtained. The arrangement of the supporting structure 423 can enable the battery assembly to have a certain gap with the inner wall of the first chamber 10 or the inner wall of the second chamber 20, so that light can act on the battery assembly in a larger area range.

Optionally, in the present embodiment, the support structure 423 includes a plurality of protrusions 4231, the plurality of protrusions 4231 controllably extend or retract the inner wall of the first chamber 10 or the second chamber 20, and the battery assembly is on the protrusions 4231.

In the embodiment of the present application, the protrusion 4231 is provided to support the battery assembly, so that the battery assembly has a certain gap with the inner wall of the first chamber 10 or the second chamber 20, and in the case that the telescopic support assembly is driven, the protrusion 4231 may protrude in the first chamber 10 or the second chamber 20 to support the battery assembly. And the plurality of protrusions 4231 provided in the inner wall of the first chamber 10 or the second chamber 20 have a beneficial effect of improving the lifting smoothness of the battery assembly. In this embodiment, the battery assembly is supported, so that a certain gap is formed between the battery assembly and the second light-transmitting working table, and since the gap exists between the battery assembly and the second light-transmitting working table 422, the light source emitted by the plurality of first light tubes 4111 or the plurality of second light tubes 4211 is emitted onto the battery assembly through a long optical path, and the area of light radiation emitted by the plurality of second light tubes 4211 is further enlarged.

It should be noted that when the extension member 4231 extends out of the inner wall of the first cavity 10 or the second cavity 20 to support the pre-laminated battery assembly, the light injection device 40 emits light to the accommodating cavity 30 to perform light injection on the pre-laminated battery assembly; when the light injection lamination device laminates the pre-laminated battery assembly, whether light injection is continuously performed on the pre-laminated battery assembly can be selected according to actual process requirements, if light injection is required to be performed on the pre-laminated battery assembly while the lamination process is performed, the protruding member 4231 keeps a state of protruding out of the inner wall of the first cavity 10 or the second cavity 20, so that the light injection device 40 continuously emits light to the accommodating cavity 30 to perform light injection on the pre-laminated battery assembly, and if light injection is not required to be performed on the pre-laminated battery assembly while the lamination process is performed, the protruding member 4231 retracts into the inner wall of the first cavity 10 or the second cavity 20, which is determined according to the actual processing process. In addition, the driving mode of the retractable supporting assembly may be motor driving, cylinder driving, or mechanical driving, which is not limited in this embodiment.

It should be further noted that, the embodiments of the present application can also be simply modified on a traditional laminating machine, a laminating chamber 30, or a cooling chamber, etc. to achieve the above functions and have the corresponding advantages:

common silica gel in an upper cavity of a laminating machine is changed into a transparent silica gel plate or other transparent high-temperature-resistant materials, corresponding lamp tubes are arranged on the cavity according to design requirements, and light intensity control is carried out on light through control so as to meet illumination intensity and uniformity;

then, an upper lamp tube and a supporting structure 423 are arranged on the laminated lower cavity platform, and the lamp tube is controlled to illuminate through a controller;

and finally, the stacked battery assembly is sent into the laminating cavity 30, the cover is laminated, the supporting structure 423 jacks up the battery assembly to perform double-sided light injection (any side can be selected to perform light injection according to requirements), light injection is started, the vacuumizing stage is finished, and the laminating and pressurizing process is started. In practical application, whether light injection is continuously performed or not can be selected according to process requirements, injection conditions are flexibly set, and cavity opening is performed after lamination is finished to finish light injection lamination of the battery assembly.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The light injection laminating equipment is characterized by comprising a first cavity and a second cavity, wherein the first cavity and the second cavity are oppositely arranged, so that the first cavity and the second cavity surround to form a laminating cavity, and the laminating cavity is used for accommodating a pre-laminated battery assembly;

at least one of the first chamber and the second chamber is provided with a light injection device for emitting light into the laminated cavity.

2. The light injection lamination apparatus of claim 1, wherein the first chamber is provided with a first light injection device comprising a first light source assembly and a first light transmissive stage, the first light source assembly and the first light transmissive stage being connected, the first light transmissive stage being disposed adjacent to a side of the second chamber;

the light emitted by the first light source assembly passes through the first light-transmitting worktable and is irradiated into the laminating cavity.

3. The light injection lamination apparatus of claim 1, wherein the second chamber is provided with a second light injection device comprising a second light source assembly and a second light transmissive stage, the second light source assembly and the second light transmissive stage being connected, the second light transmissive stage being disposed adjacent to a side of the first chamber;

the light emitted by the second light source component passes through the second light-transmitting workbench to be irradiated into the laminating cavity;

wherein the second light source assembly is also used for heating the laminating cavity.

4. The light injection lamination apparatus of claim 2, wherein the first light source assembly comprises a plurality of first light tubes arranged in an array, and the distance between the plurality of first light tubes and the surface of the first light injection device close to the second chamber is 100mm to 200mm.

5. A light injection lamination apparatus according to claim 4, wherein the plurality of first lamps have a spectral range of 300nm to 760nm, and the power of a single first lamp is 50w to 1000w.

6. The light injection lamination apparatus of claim 3, wherein the second light source assembly comprises a plurality of second light tubes arranged in an array, the spectral range of the plurality of second light tubes is 750nm or more, and the power of a single second light tube is 1kw to 1.5kw.

7. A light injection lamination apparatus according to claim 6, wherein a pitch between the plurality of second light tubes is 10mm to 30mm.

8. The light injection lamination apparatus of claim 6, wherein a plurality of the second light tubes are heating light tubes, the plurality of the second light tubes being configured to heat the lamination cavities.

9. A light injection lamination apparatus according to claim 8, wherein a retractable support structure is provided on a side of the light injection device proximate to the lamination cavity, the support structure being controllable to extend or retract an inner wall of the first chamber or the second chamber.

10. The light injection lamination device of claim 9, wherein the support structure comprises a plurality of retractable protrusions, the plurality of protrusions being disposed at gaps of the plurality of second light tubes, the plurality of protrusions being controllable to extend or retract into an inner wall of the first chamber or the second chamber, the battery assembly being on the protrusions.