CN112563369A - Packaging method of solar cell and solar cell module - Google Patents
Packaging method of solar cell and solar cell module Download PDFInfo
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 37
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- H—ELECTRICITY
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- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention provides a packaging method of a solar cell, which comprises the following steps: providing a whole battery; dividing the whole battery piece to obtain a plurality of battery pieces; distinguishing the positions of the battery fragments on the whole battery before the battery fragments are fragmented, and grouping the battery fragments according to the positions; and packaging the same group of batteries into a battery assembly. The invention also provides a solar cell module which comprises a plurality of cell fragments, and the plurality of cell fragments are packaged by the packaging method of the solar cell fragments. According to the packaging method of the solar cell piece and the solar cell module, the power of the packaged cell piece component is obviously improved by effectively classifying the cell pieces, the risk of mismatching of the power of the cell piece component is reduced, the process complexity is low, and the packaging method of the solar cell piece and the solar cell module are suitable for large-scale production.
Description
Technical Field
The invention mainly relates to the technical field of photovoltaics, in particular to a solar cell packaging method and a solar cell module.
Background
In the field of solar cells, most of the current solar cells adopt a method of slicing and then packaging the whole solar cell, and the purpose is to reduce the impedance of a cell module so as to improve the power of the cell module.
However, the performance of different solar cells varies, and the performance of the solar cells varies from one position to another in the same solar cell. Therefore, after the solar cell is cut and sliced, the obtained cell slices are located at different positions of the solar cell whole slice before slicing, and the performances of the cell slices are different.
Fig. 1 is an effect diagram of a solar cell module directly packaged after being sliced, wherein 10 is a prior art solar cell module directly packaged after being sliced. As shown in fig. 1, 11 and the portions having the same pattern represent that the cell segments are located at the edge positions (i.e., the edge pieces) of the whole solar cell before being divided; and 12 and the portions having the same pattern represent the cell segments in the middle of the solar cell monolith (i.e., the middle sheet) before being divided.
As shown in fig. 1, each of the side pieces and the middle piece are directly series-welded to form a cell module, and the side pieces and the middle piece are located at different positions of the whole solar cell before being divided, so that the performance of the cell module is different, and therefore, the power of the whole cell module shown in fig. 1 formed by direct series welding is low, and after mass production, reliability problems such as power variation and the like occur in a plurality of cell modules shown in fig. 1.
Particularly, for the production of some cell assemblies with high power requirements, the mismatch of power of the cell assemblies formed by direct series welding as shown in fig. 1 is a great risk, the reliability of actual production is low, the efficiency of producing the cell assemblies is affected, and raw materials are wasted.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for packaging a solar cell, which can effectively classify the cells, obviously improve the power of the packaged cell assembly and reduce the risk of mismatch of the power of the cell assembly.
The invention discloses a packaging method of a solar cell, which comprises the following steps: providing a whole battery; dividing the whole battery piece to obtain a plurality of battery pieces; distinguishing the positions of the battery fragments on the whole battery before the battery fragments are fragmented, and grouping the battery fragments according to the positions; and packaging the same group of batteries into a battery assembly.
In an embodiment of the invention, after the providing of the battery full-sheet and before the dividing of the battery full-sheet, the method further includes testing and screening the battery full-sheet to select a proper battery full-sheet for dividing.
In an embodiment of the present invention, the same group of battery slices includes an edge slice group battery slice and a middle slice group battery slice.
In an embodiment of the present invention, when the whole battery is divided, the dividing manner is equal division.
In an embodiment of the present invention, when the whole battery is divided, the dividing manner is unequal division.
In an embodiment of the present invention, when the same group of battery slices are packaged into the battery assembly, the same group of battery slices with different sizes after being divided into different parts are mutually matched and packaged according to size.
In an embodiment of the present invention, after obtaining the plurality of battery fragments and before distinguishing positions of the plurality of battery fragments on the whole battery before the battery fragments are fragmented, the method further includes performing performance testing and screening on the plurality of battery fragments to remove the battery fragments with performance parameters lower than a threshold, and classifying the battery fragments with equivalent performance.
In an embodiment of the invention, the method for performing performance testing and screening on the plurality of battery slices comprises thermal infrared imaging testing and screening.
In an embodiment of the present invention, when performing the performance test and the screening on the plurality of battery fragments, the battery fragments that are located in the same battery whole before the separation are simultaneously tested.
The invention also provides a solar cell module which comprises a plurality of cell segments, wherein the cell segments are packaged according to the packaging method of the solar cell segments to form the solar cell module.
In an embodiment of the solar cell module, the plurality of cell segments are cut from a whole cell segment and from the same position of the whole cell segment.
In an embodiment of the solar cell module, the plurality of cell segments are edge-segment group cell segments or middle-segment group cell segments.
In an embodiment of the solar cell module, the performance parameter of the plurality of cell segments is higher than a threshold value.
Compared with the prior art, the invention has the following advantages:
according to the packaging method of the solar cell piece and the solar cell module, the positions of the whole piece of the cell after being divided are screened and grouped, and necessary performance tests are matched, so that the cell pieces in the same power range can be effectively classified, the power of the packaged cell piece module is obviously improved, the risk of mismatching of the power of the cell piece module is reduced, the process complexity is low, and the packaging method of the solar cell piece and the solar cell module are suitable for large-scale production.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:
fig. 1 is an effect diagram of a solar cell module directly packaged after being sliced;
fig. 2 is a schematic flow chart of a method for packaging a solar cell according to an embodiment of the invention;
fig. 3 is a schematic diagram illustrating a method for packaging a solar cell shown in fig. 2 according to an embodiment of the present invention;
FIG. 4a is a schematic diagram of a solar cell slice performance test;
fig. 4b is a schematic diagram illustrating the principle of a solar cell slice performance test of the solar cell slice packaging method of the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.
It will be understood that when an element is referred to as being "on," "connected to," "coupled to" or "contacting" another element, it can be directly on, connected or coupled to, or contacting the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to" or "directly contacting" another element, there are no intervening elements present. Similarly, when a first component is said to be "in electrical contact with" or "electrically coupled to" a second component, there is an electrical path between the first component and the second component that allows current to flow. The electrical path may include capacitors, coupled inductors, and/or other components that allow current to flow even without direct contact between the conductive components.
An embodiment of the invention provides a method for packaging a solar cell, which can effectively classify cell slices, obviously improve the power of a packaged cell slice assembly, and reduce the risk of mismatch of the power of the cell slice assembly.
Fig. 2 is a schematic flow chart of a method for encapsulating a solar cell according to an embodiment of the present invention, wherein 20 is the method for encapsulating a solar cell according to the present invention. Fig. 3 is a schematic diagram illustrating a method for packaging a solar cell shown in fig. 2 according to an embodiment of the present invention.
It should be noted that fig. 2 uses a flowchart to illustrate the operations performed by the encapsulation method according to the embodiment of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, various steps may be processed in reverse order or simultaneously. Meanwhile, other operations are added to or removed from these processes.
The method for encapsulating a solar cell according to the present invention is described in detail with reference to fig. 2 and 3.
As shown in fig. 2, step 21 is to provide a battery monolith. As shown in connection with fig. 3, step 21 may be embodied as providing a plurality of solar cell monoliths a1, a2 … An.
It is to be understood that the method of providing the solar cell monolith is not the focus of the present invention and is not developed herein. The skilled person can select common battery pieces from the market according to the actual production needs, or prepare battery pieces by the conventional method in the prior art.
In An embodiment of the present invention, after the step 21 of providing the whole cell, the method for encapsulating a solar cell further includes testing and screening the provided whole solar cell a1, a2 … An, and screening out bad or abnormal cells with abnormal performance, non-conforming size, and the like according to the actual production requirement, so as to select a suitable whole cell that can meet the actual production requirement for the subsequent steps.
It is understood that the testing and screening of the whole cell can refer to the testing and screening methods of the solar cell in the prior art, such as the conventional dimension measurement, the electrical performance test, etc., and the testing and screening methods of the whole cell are not the focus of the present invention, and are not expanded herein.
As further shown in fig. 2, step 22 is to divide the whole battery piece to obtain a plurality of battery pieces.
In an embodiment of the present invention, the dividing manner in step 22 may be equal division, and the proportion of the equal division is selected according to the size of the whole battery.
For example, as shown in the block diagram representing steps 21 and 22 in fig. 3, a 210mmx210mm battery whole sheet a1 may be divided into three equal parts (the dividing line is shown by the dotted line in the block diagram of steps 21 and 22 in fig. 3) according to the actual production requirement, and three battery slices of 70mmx210mm with the same size are obtained after division.
As shown in the block diagram representing step 23 in fig. 3, the three battery segments with the same size obtained by dividing the whole battery segment a1 are a11, a12 and a13, respectively. Further, the other battery whole pieces a2 … An are equally divided, that is, each battery whole piece is divided into three equal parts to obtain three battery pieces of 70mmx210mm with the same size.
In an embodiment of the present invention, after the plurality of battery slices are obtained in step 22 and before the battery slices are subjected to position screening and grouping in step 23, the performance of the plurality of battery slices obtained in step 22 is further tested and screened, a threshold may be set in advance for the performance parameter, so as to remove the battery slices with the performance parameter lower than the threshold, and classify the battery slices with equivalent performance. For example, the battery can be classified into class a and class B according to the distinction between superior and inferior battery cell performance.
Common performance testing methods can include volt-ampere characteristic curve testing (IV testing) of photovoltaic solar cells, and can perform rapid and accurate measurement, classification and sorting on the IV performance of solar cells. The test contents include open circuit voltage (Voc) and short circuit current (Isc), peak power (pmax), conversion efficiency (eff), maximum power point voltage (Vmpp), current (Impp), and Fill Factor (FF).
In addition, an Electroluminescence (EL) test can be adopted, the internal defect detection of the solar cell or the cell module is carried out by utilizing the electroluminescence principle of crystalline silicon, and the internal defect, hidden crack, fragment, insufficient solder, broken grid and different conversion efficiencies of the solar cell module can be detected, so that the abnormal phenomenon in the cell slicing is determined; or photo-induced power generation photon test (PL test), which takes light as an excitation means to excite electrons in the material to realize luminescence, thereby screening and analyzing cell cracks, holes, impurities, defect distribution and the like.
In one embodiment of the present invention, in particular, the performance test and screening for the plurality of battery slices further includes using an Infrared Spectroscopy (IR) test. The IR test is commonly used for testing the performance of the whole battery, but in the invention, a thermal infrared program technology can be adopted, a photoelectric detection technology is used for collecting infrared signals of heat radiation of the battery fragments, the infrared signals are converted into images for human visual discrimination, and the temperature difference inside and outside an object is distinguished through the color depth. Therefore, the thermal infrared detection technology can be used for detecting a high-temperature area and identifying the electric leakage point in the battery slices, the severity of electric leakage is judged through temperature difference and is screened, and therefore effective, intuitive and quick screening is carried out on the battery slices.
In an embodiment of the present invention, particularly, when performing performance testing and screening on a plurality of battery segments, the battery segments that are located in the same battery whole before being divided may be tested simultaneously.
Fig. 4a is a schematic diagram of a solar cell slice performance test. As shown in fig. 4a, it is a conventional practice in the prior art to separately irradiate a cell segment obtained by dividing the whole cell, such as a cell segment a11 obtained by dividing the whole cell in step 22 shown in fig. 2, and perform the above-mentioned electrical property test method.
In contrast, fig. 4b is a schematic diagram of a solar cell slice performance test of the solar cell slice encapsulation method according to the present invention. As shown in fig. 4b, in the embodiment of the invention, when performing the performance test on the battery segments, the individual battery segments a11, a12 and a13 belonging to the same battery whole segment a1 before being divided can be tested simultaneously, so as to greatly increase the testing speed and the productivity.
After the performance test, bad or abnormal pieces with abnormal performance or improper size are screened and removed, the screened battery pieces are classified as described above, the battery pieces are classified into a grade A and a grade B according to the performance, and the following steps are respectively carried out on the battery pieces belonging to the grade A and the grade B, so that the battery assembly with more uniform and standard power is finally obtained.
Further, as shown in fig. 2, step 23 is to screen and group the battery slicing positions, that is, to distinguish positions of the plurality of battery slices on the whole battery slice before slicing, and group the plurality of battery slices according to the positions.
In an embodiment of the present invention, the grouping manner in step 23 is as follows, and the battery slices including the edges of the whole battery slices (i.e. the side slices) and the battery slices not including the edges of the whole battery slices and located at the middle positions (i.e. the middle slices) are used as position differentiation to perform grouping, so as to obtain the side slice group battery slices and the middle slice group battery slices.
Illustratively, as shown in fig. 3, for the whole cell a1, after the division of step 22, the cell segments a11 and a13 are two side segments from the whole cell a1 that include the edge of the whole cell a1, and the cell segment a12 is a middle segment from the whole cell a1 that does not include the edge of the whole cell a 1. Similarly, the other battery full sheets a2 … An equally divided into three parts in the same manner are also divided into two side sheets and one middle sheet. In summary, after the division in step 22, according to the method for encapsulating a solar cell of the present invention, a plurality of side piece group cell segments a11, a13, a21, a23, … An1, An3, and a plurality of middle piece group cell segments a12, a22, … An2 are obtained by division.
Finally, as shown in fig. 2, step 24 is to package the same set of battery slices. Still taking the case of trisecting the slices as shown in fig. 3 as An example, as shown in the block diagram representing step 24, the cell slices a11, a13, a21, a23, … An1 and An3 which are the same as the side slice group are packaged to obtain a cell assembly X; and packaging the battery slices A12, A22 and … An2 which are also the middle slice group to obtain a battery assembly Y.
In an embodiment of the invention, the power of the battery assembly X obtained above can be 1.5-2W higher than that of the battery assembly Y. That is to say, the battery pack X packaged by the edge piece group battery piece has obvious promotion in power compared with the battery pack Y packaged by the middle piece group battery piece, so that the requirement of a solar battery with higher power can be met, the mismatch risk of the components in the prior art is reduced, the production reliability is improved, and the waste of raw materials is avoided.
It is understood that fig. 3 and the above description related to fig. 3 only exemplarily show an embodiment of a method for encapsulating a solar cell according to the present invention in the case of trisecting a 210mmx210mm cell whole sheet. Those skilled in the art can select the whole battery pieces with different sizes according to the actual production requirement, select the division ratio according to the actual size, and make adjustments and changes based on the packaging manner shown in fig. 3 according to the position screening condition of the actually divided battery pieces and the number of the battery pieces, and thus all the adjustments and changes are within the spirit and scope of the present invention.
In another embodiment of the present invention, the segmentation manner in step 22 may be unequal segmentation. If a plurality of 210mmx210mm battery whole pieces are divided according to the ratio of 1:1.5:1, each battery whole piece is divided into two side pieces of 60mmx210mm and a middle piece of 90mmx210 mm. Further, all the side pieces of 60mmx210mm and all the middle pieces of 90mmx210mm can be selectively packaged according to the steps of the packaging method shown in fig. 2, so as to obtain two groups of battery assemblies with different sizes and different powers; or a 60mmx210mm side piece and a 90mmx210mm middle piece are used for packaging to meet different size and power requirements.
It is to be understood that the above-mentioned unequal division method and collocation manner only show the unequal division condition in the solar cell packaging method according to the present invention by way of example, and those skilled in the art can select different unequal division manners and collocation manners for the whole solar cells with different sizes according to the packaging method of the present invention according to the actual production requirement, so that various modifications are within the spirit and scope of the present invention.
The invention also provides a solar cell module which comprises a plurality of cell fragments, wherein the cell fragments are subjected to the test and cutting of the whole cell fragments according to the packaging method, the positions are distinguished, the performance test of the cell fragments is carried out, and the cell fragments are packaged according to the position groups to form the solar cell module. For example, a solar cell module according to the present invention may be a cell module X and a cell module Y as shown in fig. 3, wherein a plurality of cell segments in the cell module X are from side segment group cell segments, a plurality of cell segments in the cell module Y are from middle segment group cell segments, and after the performance test and screening described above, the performance parameters of the plurality of cell segments in the cell modules X and Y are higher than a preset threshold before the performance screening test.
It is understood that the present invention is not limited thereto, and that battery modules with different sizes and performances can be obtained by cutting the whole solar cell or dividing the positive solar cell into different parts, and various battery modules obtained by the method for encapsulating the solar cell of the present invention are within the spirit and scope of the present invention.
Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.
Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as "data block," module, "" engine, "" unit, "" component, "or" system. The processor may be one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), digital signal processing devices (DAPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, or a combination thereof. Furthermore, aspects of the present application may be represented as a computer product, including computer readable program code, embodied in one or more computer readable media. For example, computer-readable media may include, but are not limited to, magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips … …), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD) … …), smart cards, and flash memory devices (e.g., card, stick, key drive … …).
The computer readable medium may comprise a propagated data signal with the computer program code embodied therein, for example, on a baseband or as part of a carrier wave. The propagated signal may take any of a variety of forms, including electromagnetic, optical, and the like, or any suitable combination. The computer readable medium can be any computer readable medium that can communicate, propagate, or transport the program for use by or in connection with an instruction execution system, apparatus, or device. Program code on a computer readable medium may be propagated over any suitable medium, including radio, electrical cable, fiber optic cable, radio frequency signals, or the like, or any combination of the preceding.
Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.
Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.
Although the present application has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the foregoing embodiments are merely illustrative of the present application and that various changes and substitutions of equivalents may be made without departing from the spirit of the application, and therefore, it is intended that all changes and modifications to the above-described embodiments that come within the spirit of the application fall within the scope of the claims of the application.
Claims (13)
1. A packaging method of a solar cell is characterized by comprising the following steps:
providing a whole battery;
dividing the whole battery piece to obtain a plurality of battery pieces;
distinguishing the positions of the battery fragments on the whole battery before the battery fragments are fragmented, and grouping the battery fragments according to the positions; and
and packaging the same group of batteries into a battery assembly.
2. The method for packaging according to claim 1, further comprising testing and screening the battery full-sheets after the providing of the battery full-sheets and before the dividing of the battery full-sheets, so as to select a proper battery full-sheet for dividing.
3. The packaging method according to claim 1, wherein the same group of battery slices comprises side slice group battery slices and middle slice group battery slices.
4. The packaging method according to claim 1, wherein the battery is divided into equal parts when the battery is divided into whole pieces.
5. The packaging method according to claim 1, wherein the battery is divided into the whole pieces in an unequal manner.
6. The packaging method according to claim 5, wherein when the same group of battery pieces are packaged into the battery assembly, the same group of battery pieces with different sizes after being divided into different parts are packaged in a matched manner according to the size.
7. The packaging method according to claim 1, further comprising performing performance testing and screening on the plurality of battery slices after obtaining the plurality of battery slices and before distinguishing positions of the plurality of battery slices on the whole battery slices before slicing, so as to remove battery slices with performance parameters lower than a threshold value and grade battery slices with equivalent performance.
8. The packaging method of claim 7, wherein the method of performing performance testing and screening on the plurality of battery slices comprises thermal infrared imaging testing and screening.
9. The packaging method according to claim 7, wherein the battery pieces that are in the same battery piece before being divided are simultaneously tested while the plurality of battery pieces are subjected to the performance test and the screening.
10. A solar cell module comprising a plurality of cell segments, wherein the plurality of cell segments are encapsulated according to the encapsulation method of any one of claims 1 to 9 to form the solar cell module.
11. A solar cell module comprises a plurality of cell slices, wherein the cell slices are cut from a whole cell slice and from the same position of the whole cell slice.
12. The solar cell assembly of claim 11, wherein the plurality of cell segments are edge segment group cell segments or middle segment group cell segments.
13. The solar cell assembly of claim 11 wherein the performance parameter of the plurality of cell segments is above a threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010752041.1A CN112563369A (en) | 2020-07-30 | 2020-07-30 | Packaging method of solar cell and solar cell module |
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| CN202010752041.1A CN112563369A (en) | 2020-07-30 | 2020-07-30 | Packaging method of solar cell and solar cell module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115889205A (en) * | 2021-09-23 | 2023-04-04 | 环晟光伏(江苏)有限公司 | Method for identifying and selecting small laminated cell strips |
| WO2024040704A1 (en) * | 2022-08-24 | 2024-02-29 | 横店集团东磁股份有限公司 | Solar cell, manufacturing method, and photovoltaic module |
-
2020
- 2020-07-30 CN CN202010752041.1A patent/CN112563369A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115889205A (en) * | 2021-09-23 | 2023-04-04 | 环晟光伏(江苏)有限公司 | Method for identifying and selecting small laminated cell strips |
| WO2024040704A1 (en) * | 2022-08-24 | 2024-02-29 | 横店集团东磁股份有限公司 | Solar cell, manufacturing method, and photovoltaic module |
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