CN111403555B - Battery piece preparation process, battery piece preparation device and battery piece - Google Patents
Battery piece preparation process, battery piece preparation device and battery piece Download PDFInfo
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- CN111403555B CN111403555B CN202010232076.2A CN202010232076A CN111403555B CN 111403555 B CN111403555 B CN 111403555B CN 202010232076 A CN202010232076 A CN 202010232076A CN 111403555 B CN111403555 B CN 111403555B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000002161 passivation Methods 0.000 claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims description 39
- 238000000605 extraction Methods 0.000 claims description 21
- 239000000126 substance Substances 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims 1
- 239000000725 suspension Substances 0.000 abstract description 4
- 238000000231 atomic layer deposition Methods 0.000 description 36
- 238000000034 method Methods 0.000 description 19
- 239000010408 film Substances 0.000 description 8
- 238000000151 deposition Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 5
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002120 nanofilm Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000013842 nitrous oxide Nutrition 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- 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
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The application discloses a preparation process of a battery piece, which at least carries out passivation treatment on the fracture end of the battery piece so as to form an insulating layer on the fracture end of the battery piece; by forming the insulating layer, the position of the battery segment port is passivated, so that a suspension key is removed, the surface state is reduced, the power loss in the battery assembly is reduced, and the reliability of the battery assembly is improved. The application also provides a battery piece preparation device which can realize the battery piece preparation process; the battery piece preparation device comprises a scribing mechanism, a piece breaking mechanism and a passivation mechanism; the scribing mechanism is matched with the breaking mechanism to break off the whole battery piece into a plurality of battery pieces which meet the specification; and then, the passivation mechanism performs passivation treatment on the separated battery piece so that an insulating layer is formed at the mouth end of the battery piece. The application also provides a battery piece, which is prepared by the battery piece preparation device; the fracture end of the battery piece is provided with an insulating layer, so that the battery piece is high in reliability and high in conductive power.
Description
Technical Field
The application relates to the technical field of battery piece preparation, in particular to a battery piece preparation process, a battery piece preparation device and a battery piece.
Background
In order to increase the power of the battery string, in current photovoltaic devices, the whole battery sheet is divided into two, three or more.
However, after the whole battery piece is divided, the divided fracture end is provided with a suspension bond, so that the voltage can be influenced, the performance of the battery assembly is finally reduced, the bending strength of the battery piece is poor, and the photoelectric conversion power is low.
Disclosure of Invention
The application provides a battery piece preparation process, a battery piece preparation device and a battery piece, which are used for solving the technical defect that the performance of the battery piece is reduced after the whole battery piece is segmented in the prior art.
In order to solve the technical problems, the application adopts a technical scheme that: the preparation process of the battery piece is provided, at least the fracture end of the battery piece is subjected to passivation treatment, so that an insulating layer is formed at the fracture end of the battery piece.
Further, the preparation process of the battery piece comprises the following steps: scribing the surface of the whole battery piece by laser; breaking off the whole battery piece along the scribing line so that the whole battery piece is divided into a plurality of battery pieces; and passivating the battery piece to form an insulating layer at the mouth end of the battery piece.
Further, the passivation process employs ALD deposition techniques.
Further, when the ALD deposition technique is adopted, the battery slice is placed in the ALD reaction chamber, and the chemical source material is carried out by inert gas so as to perform chemical reaction at the fracture end of the battery slice to form the insulating layer.
Further, the passivation treatment is to spray insulating materials on the fracture ends of the battery pieces to form an insulating layer.
The application also provides a battery piece preparation device which can realize the battery piece preparation process; the battery piece preparation device comprises: the scribing mechanism is used for scribing the surface of the whole battery piece; the breaking mechanism is arranged at the downstream of the scribing mechanism and can break the whole battery piece along the scribing line; the passivation mechanism is arranged at the downstream of the breaking mechanism and can be used for passivating the broken battery pieces.
Further, the dicing mechanism includes: the bearing table is used for bearing the whole battery piece; the working end of the laser equipment is aligned to the bearing table, and can emit laser to scribe the whole battery piece on the bearing table.
Further, the whole battery piece is divided into two parts; the scribing mechanism can scribe a straight line on the surface of the whole battery piece to divide the whole battery piece into a first part and a second part; the breaking mechanism comprises: a first extracting member for extracting the first portion; a second extraction member for extracting a second portion; the rotary driving piece is connected with the first extracting piece and/or the second extracting piece and can drive the first extracting piece and the second extracting piece to rotate relatively.
Further, the passivation mechanism includes: the ALD reaction chamber is at least capable of accommodating the fracture end of the battery slice; at least one feeding pipe, one end of which is communicated with the ALD reaction chamber, and the other end of which is communicated with an external feeding device; at least one air inlet pipe, one end of which is communicated with the ALD reaction chamber and the other end of which is communicated with an external air supply device.
The application also provides a battery piece, which is prepared by the battery piece preparation device.
The application provides a preparation process of a battery piece, which at least carries out passivation treatment on the fracture end of the battery piece so as to form an insulating layer on the fracture end of the battery piece; by forming the insulating layer, the position of the battery segment port is passivated, so that a suspension key is removed, the surface state is reduced, the power loss in the battery assembly is reduced, and the reliability of the battery assembly is improved.
The application also provides a battery piece preparation device which can realize the battery piece preparation process; the battery piece preparation device comprises a scribing mechanism, a piece breaking mechanism and a passivation mechanism; the scribing mechanism is matched with the breaking mechanism to break off the whole battery piece into a plurality of battery pieces which meet the specification; and then, the passivation mechanism performs passivation treatment on the separated battery piece so that an insulating layer is formed at the mouth end of the battery piece.
The application also provides a battery piece, which is prepared by the battery piece preparation device; the fracture end of the battery piece is provided with an insulating layer, so that the battery piece is high in reliability and high in conductive power.
Drawings
For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a dicing process;
FIG. 2 is a schematic view of an insulating layer formed at the mouth end of a battery segment after passivation of the segmented battery segment;
fig. 3 is a schematic structural view of an embodiment of a battery sheet manufacturing apparatus according to the present application;
fig. 4 is a dicing process in which a whole battery sheet is divided into two.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring first to fig. 1, fig. 1 illustrates a dicing process. The whole cell 1 is divided into a plurality of independent cells 1'/1 "/1'" … …; wherein, the separated side of two adjacent battery pieces is the fracture end of the battery piece. It can be seen that the fracture end is a fracture position formed after the whole battery piece 1 is divided; as this position is cut, the inside of the whole battery piece 1 is exposed; although the exposed part of the fracture end is naturally oxidized, the passivation degree of the formed oxide layer is insufficient, the activity of molecules is high, and the photoelectric conversion efficiency of the battery piece is reduced.
Therefore, the application discloses a preparation process of a battery piece, which at least carries out passivation treatment on the fracture end of the battery piece so as to form an insulating layer on the fracture end of the battery piece; by forming the insulating layer, the position of the battery segment opening is passivated, so that a suspension bond is removed, the surface state is reduced, the power loss of the battery piece is reduced, and the reliability of the battery piece is improved.
Specifically, referring to fig. 2, the battery sheet manufacturing process includes the steps of: scribing the surface of the whole battery piece 1 by laser; breaking the whole battery piece 1 along the scribing line so that the whole battery piece is divided into a plurality of battery pieces 1 '/1'; the battery piece 1'/1' is subjected to passivation treatment, so that an insulating layer 2 is formed at the mouth end of the battery piece.
It is easy to understand that if the whole battery piece 1 is directly cut, the fracture ends are easily uneven, and the cutting quality cannot be ensured. Before splitting the whole battery piece 1, scribing is performed on the surface of the whole battery piece 1 by laser, and a parting line 3 is formed; dividing the whole battery piece 1 into a plurality of battery pieces 1'/1' meeting the specification by a dividing line 3; the whole cell 1 is then separated along the dividing line 3 to obtain the desired cell 1'/1".
Further, for passivation treatment, two general approaches can be adopted; one is electroless plating, for example, deposition by thermal oxidation or laughing gas oxidation or ozonation or nitric acid dissolution chemistry, to form a SiO2 film at the fracture; also for example, the Al2O3 film layer or the film containing Al is formed by PECVD (Plasma Enhanced Chemical Vapor Deposition, plasma-enhanced chemical vapor deposition), CVD (Chemical Vapour Depositio, vapor deposition) or PVD (Physical Vapor Deposition ) 2 O 3 Is a film layer of (a); and also or alternativelyAnd then deposited by ALD.
It should be explained that when the PECVD or CVD precipitation process is adopted, the battery piece is sintered, the process temperature is high, and the silver paste on the surface of the battery piece is damaged at high temperature.
For this purpose, in one embodiment, the passivation process employs ALD deposition techniques.
In particular, atomic layer deposition (Atomic Layer Deposition, ALD) technology is a nano-film deposition technology based on surface chemical vapor reaction. The method comprises the steps of introducing more than two chemical sources into a reaction cavity separately, and purging gas phase reaction products and unreacted gases after surface saturation reaction, so that substances can be plated on the surface of a substrate in a monoatomic film mode; therefore, the thickness and uniformity of the deposited film can be precisely controlled within the atomic layer thickness range. Manufacture of SiO by Atomic Layer Deposition (ALD) and plasma atomic layer deposition (PEALD) 2 、Al 2 O 3 Nano-stacks and composite materials of SiNx and other materials, so that the fracture ends are passivated, the minority carrier lifetime is prolonged, and the photoelectric conversion efficiency of the battery piece is improved.
More specifically, when the ALD deposition technique is adopted, the battery plate 1'/1″ is placed in an ALD reaction chamber, and a chemical source material is carried out by an inert gas to chemically react at the fracture end of the battery plate, thereby forming the insulating layer 2.
The chemical source materials are used for providing a silicon source, an aluminum source and/or an oxygen source, and the related chemical source materials are pulsed in an ALD reaction chamber according to the temperature and the vacuum degree required by the process and then cleaned by inert gas; and finally forming a composite film with a required thickness at the mouth end of the battery segment through multiple pulse and cleaning, namely forming the insulating layer 2.
It should be added that the passivation treatment is performed on the fracture end of the battery piece, for example, the passivation treatment is performed by only placing the fracture end of the battery piece into the ALD reaction chamber; the whole cell can also be processed, for example, the cell is directly placed into an ALD reaction chamber for passivation operation; the formation of the insulating layer 2 at the cell segment mouth end can be achieved.
Further, since the whole battery piece 1 is split to form a small battery piece having a fracture end, it is known that the fracture end is uneven; based on the growth characteristic of ALD, the composite insulating layer 2 formed by the composite insulating layer can be well coated on the surface of a complex structure, so that the connection position of the fracture end and the surrounding interface of the fracture end is further ensured to be coated, a good insulating layer 2 is formed, and the passivation effect is ensured.
In another embodiment, the insulating layer 2 is directly coated on the fracture end of the battery piece for passivation treatment. For example, the insulating material is directly sprayed on the broken ends of the battery pieces to constitute the insulating layer 2.
Specifically, after the entire battery sheet 1 is divided into a plurality of small battery sheets, an insulating material (e.g., insulating varnish, or insulating plastic, or insulating film) may be sprayed or smeared onto the broken ends of the battery sheets, thereby constituting the insulating layer 2 at the broken ends of the battery sheets.
The application also discloses a battery piece preparation device which can realize the battery piece preparation process; the battery piece preparation device comprises: a scribing mechanism 10 for scribing the surface of the whole battery piece 1; the breaking mechanism 20 is arranged at the downstream of the scribing mechanism 10 and can break the whole battery piece 1 along scribing lines; the passivation mechanism 30 is arranged downstream of the breaking mechanism 20 and can passivate the broken battery pieces 1'/1″.
Referring specifically to fig. 3, the dicing mechanism 10 includes: a carrying table 11 for carrying the whole battery piece 1; the laser device 12, whose working end is aligned with the carrying table 11, can emit laser light to scribe the whole battery piece 1 on the carrying table 11. The whole battery piece 1 is placed on a carrying table 11, and is delivered below a laser device 12 by the carrying table 11; the laser device 12 emits laser light, and divides the whole battery piece 1 into a plurality of small pieces by dividing the whole battery piece 1 into dividing lines 3 with a predetermined stroke.
The laser device 12 comprises a laser emitter and a laser driving component, wherein the laser driving component is connected with the laser emitter and can drive the laser emitter to move along the vertical and/or horizontal directions so as to conveniently control the laser emitter to mark a required dividing line 3 on the whole battery piece 1 along a preset track. Specifically, the laser driving assembly may be provided with multiple groups of linear driving mechanisms (e.g., driving members such as electric cylinders or linear modules) according to the requirement of a preset track, so as to drive the laser emitter to move according to the requirement.
In addition, in order to ensure the stability of laser scribing, the bearing table 11 can be provided with air holes and air extraction equipment communicated with the outside; therefore, after the whole battery piece 1 is placed on the bearing table 11, the air extraction equipment can vacuumize the inside of the bearing table 11 to form negative pressure inside the bearing table 11, so that the whole battery piece 1 is sucked, and the whole battery piece 1 is prevented from being displaced.
Further, the dicing mechanism 10 further includes a detecting member, which can detect the position and state of the whole battery piece 1 on the carrying table 11, and further transmit information to the control system, so that the control system controls the laser device 12 to accurately scribe the whole battery piece 1. Wherein, the detection piece can adopt CCD (Charge-coupled Device) camera.
In one embodiment, referring to fig. 3 and 4, the whole battery sheet 1 is divided into two parts; at this time, the dicing mechanism 10 may scribe a straight line on the surface of the whole battery piece 1, and separate the whole battery piece 1 into the first portion 1' and the second portion 1″; the breaking mechanism 20 includes: a first extraction member 21 for extracting the first portion 1'; a second extraction member 22 for extracting the second portion 1"; the rotation driving member 23 is connected to the first extracting member 21 and/or the second extracting member 22 and is capable of driving the first extracting member 21 and the second extracting member 22 to rotate relatively.
Specifically, the first extracting member 21 and the second extracting member 22 are arranged side by side and are rotatably connected through a rotating shaft 24; the rotating shaft 24 is arranged along the extending direction of the parting line 3; when the first extraction member 21 and the second extraction member 22 extract the first portion 1' and the second portion 1", the rotation shaft 24 is opposite to the dividing line 3; the rotation driving member 23 drives the first extraction member 21 and the second extraction member 22 to rotate around the rotation shaft 14, and the whole battery piece 1 can be broken along the dividing line 3.
Wherein, the rotary driving piece 23 can adopt linear driving components such as an air cylinder, an electric cylinder and the like; the output end of the rotary driving piece 23 is rotationally connected with one of the first extraction piece 21 and the second extraction piece 22 through a Y joint, and the other one of the first extraction piece 21 and the second extraction piece 22 is relatively fixedly arranged; when rotating, the rotation driving member 23 drives one of the first extraction member 21 and the second extraction member 22 to rotate toward the other, so that the whole battery piece 1 can be broken. Alternatively, the rotation driving member 23 may employ two sets of linear driving members, which are rotatably connected to the first extracting member 21 and the second extracting member 22 through Y-joints, respectively; thus, when rotating, the rotation driving member 23 can drive the first extracting member 21 and the second extracting member 22 to rotate towards each other, so as to break the whole battery piece 1.
Wherein the first and second extracting members 21 and 22 may employ suction cups.
When ALD deposition techniques are used for passivation, passivation mechanism 30 includes: an ALD reaction chamber 31 capable of accommodating at least the broken ends of the battery cells; at least one feed pipe 32, one end of the feed pipe 32 is communicated with the ALD reaction chamber 31, and the other end is communicated with an external feeding device; at least one inlet pipe 33, one end of the inlet pipe 33 is communicated with the ALD reaction chamber 31, and the other end is communicated with an external air supply device.
Wherein the supply device is configured to provide the chemical source material (i.e., the silicon source, the aluminum source, and/or the oxygen source) described above; specifically, according to the process requirement, the required feeding devices are respectively arranged, and then are respectively communicated with the ALD reaction chambers 31 through the feeding pipes 32; the feed line 32 is provided with a control valve that is capable of supplying a corresponding, gaseous chemical source into the ALD reaction chamber 31, depending on the process. Similarly, the gas supply device is used to supply the inert gas described above, and the gas inlet pipe 33 is also provided with a control valve, so that the inert gas can be supplied into the ALD reaction chamber 31 according to the process. All chemical source materials are connected to inert gas, which acts as carrier gas and purge gas for the ALD reaction.
Further, a heating device and a cooling device are further disposed in the ALD reaction chamber 31, so that the temperature in the ALD reaction chamber 31 can be controlled to meet the reaction requirement. In addition, the ALD reaction chamber 31 is further provided with a vacuum device, which can adjust the vacuum degree in the ALD reaction chamber 31 to meet the reaction requirement. The specific temperature and vacuum parameters are related to the actual reaction and are not described in detail herein.
The battery plate is placed in the ALD reaction chamber 31, and the gas chemically reacts on the substrate by the ALD reaction to form a composite thin film, i.e., to constitute the insulating layer 2.
In addition, when the passivation treatment adopts spraying insulating materials, the passivation treatment comprises a spraying device or a smearing device (not shown), and the gaseous or liquid insulating materials are contained in the spraying device; after the battery piece enters the device, the fracture end can be sprayed or smeared.
It should be noted that, the passivation treatment may be performed on the broken end of the battery piece, for example, the broken end of the battery piece is placed in the ALD reaction chamber 31, or the spraying device, or the painting device for passivation treatment; the whole cell may also be processed, for example, the cell may be directly placed in the ALD reaction chamber 31, or a spraying device, or a painting device for passivation; the formation of the insulating layer 2 at the cell segment mouth end can be achieved.
The application also discloses a battery piece, which is prepared by the battery piece preparation device. The fracture end of the battery piece is provided with the insulating layer 2, and the battery piece has good reliability and photoelectric conversion efficiency.
Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. Such as a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed or inherent to such process, method, article, or apparatus but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus.
The foregoing description is only illustrative of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present application.
Claims (5)
1. A battery piece preparation device, characterized in that the battery piece preparation device includes:
the scribing mechanism (10) is used for scribing the surface of the whole battery piece (1), and the scribing mechanism (10) can scribe a straight line on the surface of the whole battery piece (1) and divide the whole battery piece (1) into a first part (1 ') and a second part (1');
the sheet breaking mechanism (20) is arranged at the downstream of the scribing mechanism (10) and can break the whole battery sheet (1) along scribing lines, the sheet breaking mechanism (20) comprises a first extraction piece (21) used for extracting the first part (1 '), a second extraction piece (22) used for extracting the second part (1 ' '), a rotating driving piece (23) connected with the first extraction piece (21) and/or the second extraction piece (22) and capable of driving the first extraction piece (21) and the second extraction piece (22) to rotate relatively;
the passivation mechanism (30) is arranged at the downstream of the breaking mechanism (20), the passivation mechanism (30) comprises an ALD reaction chamber (31) and can perform passivation treatment on broken battery pieces (1 '/1' '), and only fracture ends of the battery pieces (1'/1 '') are placed into the ALD reaction chamber to perform passivation treatment.
2. The battery sheet preparation device according to claim 1, wherein the dicing mechanism (10) comprises:
the bearing table (11) is used for bearing the whole battery piece (1);
and the working end of the laser equipment (12) is opposite to the bearing table (11) and can emit laser to scribe the whole battery piece (1) on the bearing table (11).
3. The battery sheet preparation device according to claim 1, wherein the passivation mechanism (30) comprises:
at least one feeding pipe (32), wherein one end of the feeding pipe (32) is communicated with the ALD reaction chamber (31), and the other end of the feeding pipe is communicated with an external feeding device;
and one end of the air inlet pipe (33) is communicated with the ALD reaction chamber (31), and the other end of the air inlet pipe (33) is communicated with an external air supply device.
4. The battery sheet manufacturing apparatus according to claim 1, wherein in the ALD reaction chamber (31), chemical raw materials are carried out by inert gas to chemically react at the broken ends of the battery sheet to form the insulating layer (2).
5. A battery sheet prepared by the battery sheet preparation apparatus according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232076.2A CN111403555B (en) | 2020-03-27 | 2020-03-27 | Battery piece preparation process, battery piece preparation device and battery piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232076.2A CN111403555B (en) | 2020-03-27 | 2020-03-27 | Battery piece preparation process, battery piece preparation device and battery piece |
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| Publication Number | Publication Date |
|---|---|
| CN111403555A CN111403555A (en) | 2020-07-10 |
| CN111403555B true CN111403555B (en) | 2023-12-08 |
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| CN202010232076.2A Active CN111403555B (en) | 2020-03-27 | 2020-03-27 | Battery piece preparation process, battery piece preparation device and battery piece |
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| CN112349811A (en) * | 2020-10-27 | 2021-02-09 | 浙江晶科能源有限公司 | Passivation method of battery piece |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103618033A (en) * | 2013-12-05 | 2014-03-05 | 欧贝黎新能源科技股份有限公司 | Silk-screen printing production manufacturing method of passivated-back solar cell |
| CN110071178A (en) * | 2019-04-12 | 2019-07-30 | 泰州隆基乐叶光伏科技有限公司 | A kind of preparation method being sliced battery and slice battery and photovoltaic module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618033A (en) * | 2013-12-05 | 2014-03-05 | 欧贝黎新能源科技股份有限公司 | Silk-screen printing production manufacturing method of passivated-back solar cell |
| CN110071178A (en) * | 2019-04-12 | 2019-07-30 | 泰州隆基乐叶光伏科技有限公司 | A kind of preparation method being sliced battery and slice battery and photovoltaic module |
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