CN115548167B - Battery string preparation method, photovoltaic module preparation method and battery string preparation equipment - Google Patents
Battery string preparation method, photovoltaic module preparation method and battery string preparation equipment Download PDFInfo
- Publication number
- CN115548167B CN115548167B CN202211532914.3A CN202211532914A CN115548167B CN 115548167 B CN115548167 B CN 115548167B CN 202211532914 A CN202211532914 A CN 202211532914A CN 115548167 B CN115548167 B CN 115548167B
- Authority
- CN
- China
- Prior art keywords
- welding
- battery
- welding strip
- battery string
- clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 51
- 238000003466 welding Methods 0.000 claims abstract description 251
- 238000005452 bending Methods 0.000 claims abstract description 70
- 239000012528 membrane Substances 0.000 claims abstract description 62
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 229910000679 solder Inorganic materials 0.000 claims description 61
- 238000001179 sorption measurement Methods 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 21
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 238000003475 lamination Methods 0.000 claims description 7
- 238000009432 framing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 19
- 238000007711 solidification Methods 0.000 abstract description 7
- 230000008023 solidification Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 9
- 239000005038 ethylene vinyl acetate Substances 0.000 description 7
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
-
- 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
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
-
- 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
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0512—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module made of a particular material or composition of materials
-
- 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
Abstract
The invention relates to the technical field of photovoltaic cell production, in particular to a battery string preparation method, a photovoltaic module preparation method and battery string preparation equipment. According to the preparation method of the battery string, the welding strips are arranged in a staggered mode, the diaphragm and the welding strips are correspondingly and simultaneously arranged on the battery piece, the bending part of the diaphragm and the clamping part of the welding strips are not released in the process, and the stacked flat part, the welding strips and the battery piece are subjected to first solidification connection, so that the welding position is prevented from shifting; the membrane and the welding strip are all corresponding and combined at one time, so that the preparation efficiency of the battery string is improved; the two side edges of the diaphragm are bent to form the bending part, the diaphragm can be finally covered on the surface of the battery piece, and the welding strip group is fixed on the battery piece in a totally stable manner, so that the situation that the battery string is bent and deformed due to repeated carrying of the welding strip group in the process of being applied to the subsequent preparation of the photovoltaic module can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of photovoltaic cell production, in particular to a battery string preparation method, a photovoltaic module preparation method and battery string preparation equipment.
Background
The front surface of the battery piece of the back contact battery string is not provided with a main grid line, and the positive electrode row and the negative electrode row of the battery piece are arranged on the back surface of the battery piece, so that shading of the battery piece is reduced, and the light conversion efficiency of the battery piece is improved. Therefore, the back contact battery string only needs to be connected with a welding strip on the back surface of the battery string.
The positive electrode rows and the negative electrode rows of the back-contact battery pieces are arranged in a staggered manner, and the corresponding welding strip groups are connected with the adjacent battery pieces in a staggered manner. In the related art, after the welding strips are well arranged according to the laying rule of the back contact battery strings, the battery pieces are placed, and then the welding strips and the battery pieces are welded through heating.
However, in the above-described manufacturing method, the entire battery string is bent toward the side where the welding strip is provided, the battery string is uneven, and the welding strip is easily deformed by stress during welding or assembly lamination, which may cause hidden cracking or chipping of the battery sheet.
Disclosure of Invention
The invention provides a battery string preparation method, a photovoltaic module preparation method and battery string preparation equipment, which can effectively solve the above or other potential technical problems.
A first aspect of the present invention provides a battery string manufacturing method, comprising: arranging N battery pieces at intervals, wherein N is a positive integer; the method comprises the steps that M welding strip groups are staggered to form an array, the M welding strip groups and N battery pieces are correspondingly arranged at intervals, and each welding strip group comprises a first welding strip section, a second welding strip section and a third welding strip section which are sequentially connected; each welding strip group is provided with at least two clamping parts; one side of the first welding strip section and one side of the third welding strip section, which are far away from the second welding strip section, are provided with clamping parts, wherein M is a positive integer; placing N films on one side of the M welding strips, which is away from the N battery pieces, wherein the N films are in one-to-one correspondence with the N battery pieces; each diaphragm corresponds to at least two welding strip groups, and each diaphragm corresponds to a first welding strip section of one welding strip group and a third welding strip section of an adjacent welding strip group; the diaphragm is provided with a bending part and a spreading part, the bending part is positioned at the edges of two opposite sides of the diaphragm, and the spreading part is positioned between the two bending parts; correspondingly paving N films and M welding strips on N battery pieces, paving a paving part on the back of the corresponding battery piece, and covering at least two welding strips between the paving part and the battery piece; and (3) performing first curing connection on the stacked flat parts, the welding strip groups and the battery pieces, releasing the clamping parts and the bending parts, and covering the clamping parts by the bending parts.
According to the battery string preparation method, in the preparation process, the welding band groups are staggered, the membrane and the welding band groups are correspondingly arranged on the battery piece at the same time, the bending part of the membrane and the clamping part of the welding band group are not released in the process, and the stacked flat part, the welding band group and the battery piece are subjected to primary solidification connection, so that the preliminary positioning of the welding band group is realized, and the welding position can be effectively ensured not to deviate; the membrane and the welding strip are all corresponding and combined at one time, so that the preparation efficiency of the battery string is effectively improved; meanwhile, the two side edges of the diaphragm are bent to form a bending part, the diaphragm can be finally covered on the surface of the battery piece, and the welding strip group is fixed on the battery piece in a stable manner, so that the situation that the battery string is bent and deformed due to repeated carrying of the welding strip group in the process of being applied to the subsequent preparation of the photovoltaic module can be effectively avoided.
In an alternative embodiment according to the first aspect, after releasing the clamping portion and the bending portion, further comprising:
and (3) performing secondary curing connection on the whole of the laminated films, the welding strip group and the battery piece to obtain a battery string.
This arrangement provides a battery string with a stable connection.
In an alternative embodiment according to the first aspect, the releasing the grip and the bending portion comprises in particular:
simultaneously releasing the clamping part and the bending part; or alternatively, the first and second heat exchangers may be,
the clamping part is released first, and then the bending part is released.
It should be noted that, by adopting the mode of releasing the clamping part and the bending part simultaneously, the release time is saved, and the preparation efficiency of the battery string can be effectively improved. The clamping part is released firstly, and then the bending part is released, so that the released clamping part is further ensured to be in an extending state, and the bending of the clamping part is further avoided.
In an alternative embodiment according to the first aspect, the first and second cured connections are both compression heat bonded.
So set up, can improve the solidification effect, and can guarantee the stability of connection.
In an alternative embodiment according to the first aspect, the solder strip sets may each be used as a clamping part in a position other than the position corresponding to the tile.
So set up, but a plurality of positions of centre gripping welding set of bands, and then guarantee the stability of welding set of bands centre gripping.
In an alternative embodiment according to the first aspect, the battery string is produced with a solder strip extending from both the end to end, the solder strip being at least partially arranged between the battery cells and the membrane of the battery string.
So set up, all extend at the head and the tail both ends of battery cluster and have the welding set group for when making photovoltaic module, be convenient for carry out series connection or parallelly connected with the head and the tail of a plurality of battery clusters.
In an alternative embodiment according to the first aspect, the M solder strip groups are staggered in an array, specifically including:
the A welding strip groups are arranged at intervals along a first preset direction to form welding strip group rows; the third welding strip section of the welding strip group is close to the first welding strip section of the adjacent welding strip group;
b welding strip groups are arranged at intervals along a second preset direction to form a welding strip group array; the first welding strip sections of the welding strip groups of the even-numbered welding strip groups correspond to the third welding strip sections of the welding strip groups of the odd-numbered welding strip groups, the welding strip groups of the even-numbered welding strip groups are arranged in a one-to-one correspondence manner, and the welding strip groups of the odd-numbered welding strip groups are arranged in a one-to-one correspondence manner; the first preset direction is perpendicular to the second preset direction; a and B are both positive integers, and A, B and M satisfy: m is the product of A and B.
The arrangement realizes that M welding strip groups are staggered to form array arrangement.
The second aspect of the invention also provides a preparation method of the photovoltaic module, comprising the preparation method of the battery string; the plurality of battery strings manufactured by the battery string manufacturing method are connected in series or in parallel to form a confluence assembly; filling layers are arranged on two opposite surfaces of the converging component; a cover plate is arranged on the outer surfaces of the two filling layers, and the bus assembly covered with the cover plate is heated, so that the filling layers are welded with the outer surfaces of the welding strip groups of the battery strings, and the welding layers of the welding strip groups of the battery strings are welded with grid lines of battery pieces of the battery strings; and carrying out lamination heating on the busbar assembly covered with the cover plates, vacuumizing between the two cover plates, and framing to form the photovoltaic assembly.
The preparation method of the photovoltaic module provided by the embodiment of the application also has the advantage of effectively ensuring that the welding position is not deviated due to the preparation method of the battery string; the preparation efficiency of the battery string is effectively improved; the technical effect of effectively avoiding the situation that the welding band group of the battery string can bend and deform.
The third aspect of the present invention also provides a battery string preparing apparatus, based on the above-described battery string preparing method; the battery string preparation equipment comprises a belt grabbing device, a film grabbing device and a bearing table; the belt grabbing device comprises a plurality of clamping belt assemblies which are arranged at intervals, and the clamping belt assemblies are used for clamping parts of the welding belt groups; the film grabbing device comprises a plurality of film grabbing components which are arranged at intervals, wherein each film grabbing component is provided with a tiled adsorption part and two bending adsorption parts, and the two bending adsorption parts are arranged on two opposite sides of the tiled adsorption part; the tiling adsorption part is used for adsorbing the tiling part, and the bending adsorption part is used for adsorbing the bending part; the bearing table is used for bearing the battery piece; the film grabbing device and the belt grabbing device are connected in a sliding mode, so that the belt grabbing device and the film grabbing device are close to or far away from each other, the film grabbing assembly is arranged between gaps of the clamping assembly, the flat part corresponds to the welding belt group, and the clamping part is avoided; the film grabbing device and the belt grabbing device are respectively and slidably connected with the bearing table so as to enable the film grabbing device and the belt grabbing device to be close to or far away from the bearing table; the bearing table and/or the grabbing membrane component is provided with a solidifying piece.
In the battery string preparation equipment provided by the embodiment of the invention, in the use process, the battery piece is paved on the bearing table, the band grabbing device grabs the welding band group, and the membrane grabbing device grabs the membrane. Clamping parts for clamping the welding belt group by the clamping belt component; the adsorption part is paved to adsorb the paved part of the membrane, the adsorption part is bent to adsorb the bent part of the membrane, and then the membrane grabbing device and the belt grabbing device are mutually close to each other, so that the membrane grabbing assembly is arranged between gaps of the clamping assembly, and the paved part corresponds to the welding belt group and avoids the clamping part; after the diaphragm corresponds to the welding strip group, the diaphragm grabbing device drives the diaphragm and the welding strip group to be close to the battery piece at the same time, the diaphragm and the welding strip group are placed on the battery piece, and the stacked flat part, the welding strip group and the battery piece are subjected to primary solidification connection. The battery string preparation equipment provided by the embodiment of the application can effectively ensure that the welding position is not deviated; the preparation efficiency of the battery string is effectively improved; the technical effect of effectively avoiding the situation that the welding band group of the battery string can bend and deform.
In an alternative embodiment according to the third aspect, the entrainment assembly comprises at least two entrainment hands comprising a drive mechanism and two clamping mechanisms arranged opposite each other, the drive mechanism being adapted to drive the two clamping mechanisms towards or away from each other for clamping or releasing the clamping portion.
By the arrangement, the clamping or releasing of the clamping part of the butt welding band group is realized.
In an alternative embodiment according to the third aspect, each clamping strap assembly clamps one of the solder strip assemblies, the clamping strap of the clamping strap assembly being used by the clamping hand to clamp the clamping portion of the same solder strip group; the plurality of entrainment components are staggered and arranged in an array; so that the adjacent strap assemblies are disposed at equal intervals along the length of the strap set and the first strap segment of the strap set corresponds to the third strap segment of the adjacent strap set along the width of the strap set.
The arrangement is such that the welding strip groups are arranged according to a preset arrangement mode.
In an alternative embodiment according to the third aspect, the tile suction and the folded suction each comprise a plurality of suction holes.
So set up, realize firmly snatching the diaphragm.
In an alternative embodiment according to the third aspect, the curing member comprises a heating member.
In this embodiment, setting the curing member as the heating member, adapting to the nature of the membrane, can rapidly achieve curing bonding, and can ensure the stability of bonding.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and other objects, features and advantages of embodiments of the present invention will become more readily apparent from the following detailed description with reference to the accompanying drawings. Embodiments of the invention will now be described, by way of example and not limitation, in the figures of the accompanying drawings, in which:
fig. 1 is a schematic diagram of an overall structure of a battery string according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a welding strip group of a battery string according to an embodiment of the present disclosure when the welding strip group is clamped by a clamping hand to form an array arrangement;
fig. 3 is a schematic structural diagram of a membrane of a battery string and a solder strip set according to an embodiment of the disclosure;
fig. 4 is a schematic structural diagram of a grabbing membrane assembly according to an embodiment of the present application, wherein the grabbing membrane assembly grabs a membrane and clamps a welding band set close to a battery piece corresponding to an entrained hand;
fig. 5 is a schematic structural diagram of a battery string according to an embodiment of the present disclosure during a first curing connection;
fig. 6 is a schematic structural diagram of a battery string provided in the embodiment of the present application after the first curing connection, after the bending portion and the clamping portion are released;
fig. 7 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a battery string preparing apparatus according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a film grabbing device and a belt grabbing device of the battery string preparation device provided in the embodiment of the present application at a third view angle;
Fig. 10 is a schematic structural view of a film grabbing assembly of the battery string manufacturing apparatus according to the embodiment of the present application.
Reference numerals:
10. a battery string; 11. a battery sheet; 13. welding a band group; 131. a first solder strip section; 132. a second solder strip section; 133. a third solder strip section; 134. a clamping part; 15. a membrane; 151. a bending part; 153. a tiling section; 20. a photovoltaic module; 21. a filling layer; 23. a cover plate; 30. a battery string preparing apparatus; 31. a belt grabbing device; 311. an entrainment assembly; 312. hand entrainment; 313. a driving mechanism; 314. a clamping mechanism; 32. a film grabbing device; 321. a membrane grabbing assembly; 323. tiling the adsorption part; 325. bending the adsorption part; 33. a carrying platform; 34. a first driving member; 35. a second driving member; 36. and a third driving member.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
It should be understood that the following examples do not limit the order of execution of the steps in the method claimed in the present invention. The individual steps of the method of the invention can be carried out in any possible order and in a cyclic manner without contradiction.
In the description of the present invention, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The front surface of the battery piece of the back contact battery string is not provided with a main grid line, and the positive electrode row and the negative electrode row of the battery piece are arranged on the back surface of the battery piece, so that shading of the battery piece is reduced, and the light conversion efficiency of the battery piece is improved. Therefore, the back contact battery string only needs to be connected with a welding strip on the back surface of the battery string. The positive electrode rows and the negative electrode rows of the back-contact battery pieces are arranged in a staggered manner, and the corresponding welding strip groups are connected with the adjacent battery pieces in a staggered manner. In the related art, after the welding strips are well arranged according to the laying rule of the back contact battery strings, the battery pieces are placed, and then the welding strips and the battery pieces are welded through heating. However, in the above-described manufacturing method, the entire battery string is bent toward the side where the welding strip is provided, the battery string is uneven, and the welding strip is easily deformed by stress during welding or assembly lamination, which may cause hidden cracking or chipping of the battery sheet.
In the traditional preparation mode, the welding strip group is completely released and is arranged between the membrane and the battery piece, and in the heating process, the welding strip group is easy to bend due to deformation caused by heating.
In view of this, in the method for manufacturing a battery string provided in the embodiments of the present application, during the curing process, the two ends of the welding band set are clamped first, and are not released, and after the main body portion of the welding band set is primarily cured and connected with the membrane and the battery piece, the clamping portions at the two ends of the welding band set are released, so that during the primarily cured and connected process, the welding band set is in the clamping process, and bending of the welding band set can be effectively avoided.
Specifically, in the preparation method of the battery string provided by the embodiment of the application, in the preparation process, the welding band groups are staggered, the membrane and the welding band groups are correspondingly and simultaneously arranged on the battery piece, the bending part of the membrane and the clamping part of the welding band group are not released in the process, and the stacked flat part, the welding band group and the battery piece are subjected to first solidification connection, so that the preliminary positioning of the welding band group is realized, and the welding position is effectively ensured not to deviate; the membrane and the welding strip are all corresponding and combined at one time, so that the preparation efficiency of the battery string is effectively improved; meanwhile, the two side edges of the diaphragm are bent to form a bending part, the diaphragm can be finally covered on the surface of the battery piece, and the welding strip group is fixed on the battery piece in a stable manner, so that the situation that the battery string is bent and deformed due to repeated carrying of the welding strip group in the process of being applied to the subsequent preparation of the photovoltaic module can be effectively avoided.
Referring to fig. 1 to 6, a method for manufacturing a battery string 10 according to an embodiment of the present disclosure includes: n battery pieces 11 are arranged at intervals, wherein N is a positive integer; the M welding strip groups 13 are staggered to form an array, the M welding strip groups 13 are arranged at intervals corresponding to the N battery pieces 11, and each welding strip group 13 comprises a first welding strip section 131, a second welding strip section 132 and a third welding strip section 133 which are sequentially connected; at least two clamping portions 134 are provided for each welding strip set 13; one side of the first and third solder strip sections 131 and 133, which is far from the second solder strip section 132, is provided with a clamping part 134, wherein M is a positive integer; the N films 15 are arranged on one side of the M welding strips 13, which is away from the N battery pieces 11, and the N films 15 are in one-to-one correspondence with the N battery pieces 11; wherein each diaphragm 15 corresponds to at least two solder strip groups 13, and each diaphragm 15 corresponds to a first solder strip segment 131 of one solder strip group 13 and a third solder strip segment 133 of an adjacent solder strip group 13; the membrane 15 has a bending portion 151 and a flat portion 153, the bending portion 151 being located at edges of opposite sides of the membrane 15, the flat portion 153 being located between the two bending portions 151; the N films 15 and the M welding strip groups 13 are correspondingly paved on the N battery pieces 11, the paving parts 153 are paved on the back surfaces of the corresponding battery pieces 11, and at least two welding strip groups 13 are covered between the paving parts 153 and the battery pieces 11; the stacked flat portion 153, the solder tape set 13, and the battery piece 11 are first cured and connected, and the holding portion 134 and the bending portion 151 are released, and the bending portion 151 covers the holding portion 134.
It should be noted that, in the preparation process, the membrane 15 and the band set 13 are arranged in a staggered manner, and are simultaneously placed on the battery piece 11, in the process, the bending part 151 of the membrane 15 and the clamping part 134 of the band set 13 are not released, and the stacked flat part 153, the band set 13 and the battery piece 11 are subjected to first solidification connection, so that the preliminary positioning of the band set 13 is realized, and the position of the band set 13 is effectively ensured not to deviate; the membrane 15 and the welding strip are all corresponding and combined at one time, so that the preparation efficiency of the battery string 10 is effectively improved; meanwhile, the two side edges of the membrane 15 are bent to form the bending parts 151, the membrane 15 can be finally covered on the surface of the battery piece 11, and the welding strip group 13 is fixed on the battery piece 11 in a stable manner, so that the situation that the battery string 10 is bent and deformed due to repeated carrying of the welding strip group 13 in the process of preparing the photovoltaic module 20 in the following process can be effectively avoided.
It should be further noted that, in the embodiment of the present application, the clamping portion 134 of the welding set 13 is a position where the clamping hand 312 corresponds to the clamping position of the welding set 13 when the welding set 13 is laid.
In this embodiment, the two sides of the membrane 15 are bent to form the bending portion 151, and the bending portion 151 is provided because, in the laying process, the size of the membrane 15 is substantially the same as the size of the battery piece 11, and the two ends of the welding set 13 laid between the battery piece 11 and the membrane 15 need to be clamped and fixed when the welding set 13 is laid on the battery piece 11, so in order to avoid the clamping hands 312 for clamping the clamping portion 134 at the two ends of the welding set 13, the two sides of the membrane 15 are adaptively provided with the bending portion 151.
In this embodiment, for example, N battery pieces 11 are arranged at intervals, where N has a value of 9, and in this application, the number of the diaphragms 15 is also set to 9 adaptively, and each diaphragm 15 covers 7 solder strip groups 13 along the vertical direction, that is, covers the first solder strip segment 131 or the third solder strip segment 133 of the solder strip group 13, and is close to the clamping portion 134 of the solder strip group 13 assembly. M takes the value of 35, and every row sets up 5 welding set group 13, sets up 7 row welding set group 13 altogether, and 35 welding set group 13 set up between 7 diaphragms 15 and 7 battery piece 11.
It should be understood that the number of battery pieces 11, the number of solder strips 13, and the number of diaphragms 15 included in the battery string 10 are not limited herein, and in other embodiments, may be adaptively adjusted according to the specific needs of the user.
In an alternative exemplary embodiment, after releasing grip 134 and bend 151, further comprises:
the laminated film 15, the solder ribbon set 13, and the battery piece 11 are integrally subjected to a second curing connection to obtain a battery string 10.
In the present embodiment, specifically, the clamping portion 134 and the bending portion 151 are released so that the clamping portion 134 covers the battery piece 11, the bending portion 151 covers the clamping portion 134, and the whole of the laminated film 15, the solder strip group 13, and the battery piece 11 is subjected to the second curing connection to obtain the battery string 10. This arrangement results in a battery string 10 that is firmly connected.
Specifically, in the present embodiment, the holding portion 134 and the bending portion 151 are released so that the holding portion 134 covers the battery piece 11, the bending portion 151 covers the holding portion 134, and then the film sheet 15, the solder set 13, and the battery piece 11 integrally laminated together are moved to another station for the second integral curing.
In this embodiment, the second curing connection may be performed directly on the carrier 33 of the battery piece 11 after releasing the clamping portion 134 and the bending portion 151 so that the clamping portion 134 covers the battery piece 11. For example, a heat source for curing the entire battery string 10 is directly provided on the stage 33 of the battery piece 11.
The first and second curing connections are, for example, heated, the purpose of which is to adhere the membrane 15 to the battery plate 11 and the solder strip 13 in order to produce tackiness in the membrane 15, the heating temperature being a low temperature heating in the range of 50-180 ℃. By the arrangement, the stress deformation and bending of the battery string caused by high-temperature welding can be effectively avoided.
In an alternative exemplary embodiment, the first and second cured connections are both compression heat bonded.
In this embodiment, the first curing connection and the second curing connection are bonded by pressing and heating, so that the curing effect can be improved, and the stability of the connection can be ensured.
Specifically, in this embodiment, the heat source for the first curing connection may be located on the back of the battery piece 11, that is, on the side of the grabbing membrane 15, and on the side of the flat portion 153 of the membrane 15 facing away from the battery piece 11; it is also possible to provide the heat source on the front surface of the battery sheet 11, for example, on the stage 33 that carries the battery sheet 11.
The second curing connection can set a heat source on the front surface of the battery piece 11, that is, the battery piece 11, the welding strip group 13 and the membrane 15 after lamination are integrally operated to the next procedure, the bearing part of the next procedure is provided with the heat source, and the second curing connection on the whole battery string 10 is realized, so that the curing connection of the battery string 10 is more convenient, simple and easy to operate and higher in efficiency.
In an alternative exemplary embodiment, release grip 134 and bend 151 specifically include: simultaneously releasing grip 134 and bend 151; alternatively, the clamping portion 134 is released first, and then the bending portion 151 is released.
In particular, in this embodiment, when the clamping portion 134 and the bending portion 151 are released, there may be two releasing manners, that is, releasing the clamping portion 134 and the bending portion 151 simultaneously, which saves the releasing time and effectively improves the preparation efficiency of the battery string 10. At the same time, it is also satisfied that the clamping portion 134 of the solder strip set 13 is located between the bending portion 151 of the membrane 15 and the battery piece 11. In another way, the clamping part 134 located in the middle layer is released, so that the clamping part 134 can be effectively laid on the battery piece 11, and then the bending part 151 of the membrane 15 located in the top layer is released, so that the bending part 151 covers the clamping part 134, and the released clamping part 134 can be further ensured to be in an extending state, and further bending of the clamping part is avoided.
For example, when the welding strip group 13 covers the battery piece 11, the two ends of the welding strip group 13 are set to be 2 mm-10 mm retracted relative to the edge of the end of the battery piece 11, so that the phenomenon that the end of the welding strip group 13 is overlapped with the adjacent battery piece 11 to cause the short circuit of the battery string 10 can be effectively prevented, and therefore, the two ends of each welding strip group 13 are extended to the surface of the battery piece 11 but not more than the edge of each battery piece 11.
In alternative exemplary embodiments, locations other than those of the solder strip set 13 corresponding to the flat portions 153 may be used as the holding portions 134.
In this embodiment, the positions of the solder strip group 13 other than the positions corresponding to the flat portions 153 can be used as the clamping portions 134, that is, the same solder strip group 13 is not limited to the positions corresponding to the flat portions 153 of the film 15, and the ends of the first solder strip section 131 and the third solder strip section 133 can be used as the clamping portions 134 to ensure the stability of clamping the solder strip group 13, so that more than two clamping positions can be used for the same solder strip group 13 according to the actual requirements of the user, and other clamping positions need to be avoided.
In an alternative exemplary embodiment, the battery string 10 is manufactured with a solder ribbon set 13 extending from each end to end, and the solder ribbon set 13 is at least partially disposed between the battery cells 11 and the membrane 15 of the battery string 10.
In this embodiment, the welding strip groups 13 extend from the front end to the rear end of the manufactured battery string 10, and the welding strip groups 13 extend from the front end to the rear end of the battery string 10, so that the front ends and the rear ends of the battery strings 10 can be connected in series or in parallel conveniently when the photovoltaic module 20 is manufactured.
In an alternative exemplary embodiment, M solder strip groups 13 are staggered in an array, and specifically include: the A welding strip groups 13 are arranged at intervals along a first preset direction to form welding strip groups; the third solder strip segment 133 of the solder strip set 13 is adjacent to the first solder strip segment 131 of the adjacent solder strip set 13; b welding strip groups are arranged at intervals along a second preset direction to form a welding strip group 13 array; the first welding strip sections 131 of the welding strip groups 13 of the even-numbered welding strip groups correspond to the third welding strip sections 133 of the welding strip groups 13 of the odd-numbered welding strip groups, the welding strip groups 13 of the welding strip groups of the even-numbered welding strip groups are arranged in a one-to-one correspondence manner, and the welding strip groups 13 of the welding strip groups of the odd-numbered welding strip groups are arranged in a one-to-one correspondence manner; the first preset direction is perpendicular to the second preset direction; a and B are both positive integers, and A, B and M satisfy: m is the product of A and B.
In this embodiment, the specific arrangement manner of the M solder strip groups 13 in an array arrangement is illustrated in this embodiment, for example, the M value is 35, the a value is 5, and the b value is 7, in the arrangement process, the 5 solder strip groups 13 are arranged at equal intervals along a first preset direction of the solder strip groups 13, and the first preset direction may be a horizontal direction, that is, the 5 solder strip groups 13 are arranged along the horizontal direction at intervals from the beginning to the end of the adjacent solder strip groups 13 to form a first horizontal row; the second to seventh horizontal rows also adopt 5 welding strip groups 13 to be distributed at equal intervals along the horizontal direction, wherein the second horizontal row and the first horizontal row are staggered so that the first welding strip section 131 of the welding strip group 13 of the first horizontal row corresponds to the third welding strip section 133 of the welding strip group 13 of the second horizontal row; the third welding strip section 133 of the welding strip group 13 of the second horizontal row corresponds to the first welding strip section 131 of the third horizontal row, and similarly, the welding strip groups 13 of the welding strip group rows of the even number row are arranged in a one-to-one correspondence, and the welding strip groups 13 of the welding strip group rows of the odd number row are arranged in a one-to-one correspondence; namely, the welding strip groups 13 of the first horizontal row, the third horizontal row, the fifth horizontal row and the seventh horizontal row are respectively arranged correspondingly, and the welding strip groups 13 positioned in the second horizontal row, the fourth horizontal row and the sixth horizontal row are respectively arranged correspondingly; specifically, the first solder strip segment 131 corresponds to the first solder strip segment 131, the second solder strip segment 132 corresponds to the second solder strip segment 132, and the third solder strip segment 133 corresponds to the third solder strip segment 133.
It will be appreciated that the specific value of M is not limited herein, and in other embodiments, M may be set to other suitable values according to the needs of the user.
It should be noted that, according to the preparation method of the battery string provided in the embodiment of the present application, the plurality of welding strips 13 and the plurality of diaphragms 15 can be clamped at the same time, so that the whole battery string 10 can be paved by one-time operation, and the preparation efficiency of the battery string 10 is effectively improved.
The setting is 1, that is, by adopting the preparation method of the battery string provided by the embodiment of the application, a welding strip group 13 and a membrane 15 can be paved on a battery piece 11, and are paved and connected along the length direction in sequence, so that the whole string of back contact type battery strings 10 is paved at one time.
The present disclosure also provides a method for preparing the photovoltaic module 20, including the method for preparing the battery string 10 described above;
the plurality of battery strings 10 manufactured by the battery string 10 manufacturing method are connected in series or in parallel to form a bus assembly;
a filler layer 21 is provided on both opposite surfaces of the bus bar assembly;
a cover plate 23 is arranged on the outer surfaces of the two filling layers 21, and the bus assembly covered with the cover plate 23 is heated so as to weld the filling layers 21 and the outer surfaces of the welding strip groups 13 of the battery strings 10 and weld the welding layers of the welding strip groups 13 of the battery strings 10 and the grid lines of the battery pieces 11 of the battery strings 10;
The busbar assembly covered with the cover plates 23 is subjected to lamination heating, and vacuum is drawn between the two cover plates 23, and framed to form the photovoltaic module 20.
In the present embodiment, the welding layer of the welding set 13 of the battery string 10 is welded to the grid line of the battery piece 11 of the battery string 10, and the welding is performed for electrical connection, that is, the welding between the conductive metals used for the welding.
Referring to fig. 7, the method for manufacturing the photovoltaic module 20 according to the embodiment of the present application is based on the above-mentioned method for manufacturing the battery string, so that the welding position is effectively guaranteed not to deviate; the manufacturing efficiency of the battery string 10 is effectively improved; the technical effect of effectively avoiding the situation that the welding band group 13 of the battery string 10 is bent and deformed.
It should be noted that, in this embodiment, the filling layer 21 may be a film made of EVA (Ethylene Vinyl Acetate Copolymer, EVA for short) ethylene-vinyl acetate copolymer polymer material, and the finished product made of EVA has good flexibility, shock resistance, skid resistance, and strong pressure resistance; meanwhile, the EVA material has inclusion and cross-linking property which are not possessed by other materials, so that the EVA material is suitable for other halogen-free flame-retardant cables, semiconductor shielding cables and two-step silane cross-linked cables. The filling layer 21 may be a film of PVB (Polyvinyl Butyral, abbreviated as PVB) polymer material, which is melted when the photovoltaic module 20 is laminated and heated, and fills the gaps between the strings 10 by lamination and vacuum pumping, so that the interior of the glass of the photovoltaic module 20 is completely vacuum, and bubbles are avoided.
Illustratively, a cover plate 23 is provided on the outer surfaces of the two filler layers 21, and the cover plate 23 may be a glass plate.
Referring to fig. 8 to 10, the present disclosure further provides a battery string preparing apparatus 30, based on the above-mentioned battery string 10 preparing method; the battery string preparing apparatus 30 includes a belt grasping device 31, a film grasping device 32, and a carrying table 33; the band grabbing device 31 comprises a plurality of clamping band assemblies 311 which are arranged at intervals, wherein the clamping band assemblies 311 are used for clamping the clamping parts 134 of the welding band groups 13; the film grabbing device 32 comprises a plurality of film grabbing components 321 arranged at intervals, wherein the film grabbing components 321 are provided with a tiled adsorption part 323 and two bending adsorption parts 325, and the two bending adsorption parts 325 are arranged on two opposite sides of the tiled adsorption part 323; the tile adsorption part 323 is used for adsorbing the tile part 153, and the bending adsorption part 325 is used for adsorbing the bending part 151; the bearing table 33 is used for bearing the battery piece 11; the film grabbing device 32 and the band grabbing device 31 are slidably connected, so that the band grabbing device 31 and the film grabbing device 32 are close to or far away from each other, the film grabbing assembly 321 is placed between gaps of the clamping assemblies 311, the flat portions 153 correspond to the welding band groups 13, and the clamping portions 134 are avoided; the film grasping device 32 and the tape grasping device 31 are slidably connected to the carrying table 33, respectively, so that the film grasping device 32 and the tape grasping device 31 are close to or far from the carrying table 33; the carrier 33 and/or the membrane module 321 are provided with curing members.
In this embodiment, in the battery string manufacturing apparatus 30 provided in the embodiment of the present invention, in the use process, the battery piece 11 is laid on the carrying table 33, the band grabbing device 31 grabs the welding band set 13, and the film grabbing device 32 grabs the film 15. Clamping portion 134 of clamping strap set 13 is clamped by clamping strap assembly 311; the tiling adsorption part 323 adsorbs the tiling part 153 of the membrane 15, the bending adsorption part 325 adsorbs the bending part 151 of the membrane 15, and then the membrane grabbing device 32 and the belt grabbing device 31 are mutually close, so that the membrane grabbing component 321 is arranged between gaps of the clamping components 311, and the tiling part 153 corresponds to the welding belt group 13 and avoids the clamping part 134; after the film 15 corresponds to the welding strip group 13, the film grabbing device 32 drives the film 15 and the belt grabbing device 31 drives the welding strip group 13 to be close to the battery piece 11 at the same time, and the welding strip group 13 is placed on the battery piece 11 to carry out first solidification connection on the stacked flat part 153, the welding strip group 13 and the battery piece 11. The battery string preparation equipment 30 provided by the embodiment of the application can effectively ensure that the welding position is not deviated; the manufacturing efficiency of the battery string 10 is effectively improved; the technical effect of effectively avoiding the situation that the welding band group 13 of the battery string 10 is bent and deformed.
In an alternative exemplary embodiment, the battery string preparing apparatus 30 further includes a first driving member 34, a second driving member 35, and a third driving member 36; the first driving piece 34 is in driving connection with the belt grabbing device 31 and drives the belt grabbing device 31 to be close to or far away from the bearing table 33; the second driving piece 35 is in driving connection with the film grabbing device 32, and drives the film grabbing device 32 to be close to or far away from the bearing table 33; the third driving member 36 is in driving connection with the band grabbing device 31 and/or the film grabbing device 32, and drives the band grabbing device 31 and/or the band grabbing device 31 to move the band grabbing device 31 and the film grabbing device 32 towards or away from each other.
It should be noted that, the first driving member 34 is used for driving the band grabbing device 31 to approach or depart from the carrying platform 33, and the second driving member 35 is used for driving the film grabbing device 32 to approach or depart from the carrying platform 33, so that after the positions of the film grabbing device 32 grabbing the film 15 and the band grabbing assembly grabbing the welding band 13 correspond to each other, the film grabbing device 32 and the band grabbing assembly grabbing the welding band 13 together move towards the direction approaching to the carrying platform 33, and further the stacking of the battery pieces 11 on the carrying platform 33 is realized.
In this embodiment, the first driving member 34 and the second driving member 35 may be hydraulic cylinders for driving the belt grabbing device 31 and the film grabbing device 32 to move in the vertical direction, that is, to achieve lifting operation. The second driving piece 35 is a sliding table connected between the belt grabbing device 31 and the film grabbing device 32, so that the belt grabbing device 31 and the film grabbing device 32 can run along the horizontal direction, and the belt grabbing device 31 and the film grabbing device 32 can be close to or far away from each other.
In an alternative exemplary embodiment, the entrainment assembly 311 includes at least two entrainment hands 312, the entrainment hands 312 including a drive mechanism 313 and two oppositely disposed clamping mechanisms 314, the drive mechanism 313 being configured to drive the two clamping mechanisms 314 toward or away from each other to clamp or release the clamping portion 134.
In the present embodiment, the clamping assembly 311 includes at least two clamping hands 312, the clamping hands 312 including a driving mechanism 313 and two clamping mechanisms 314 disposed opposite to each other, the driving mechanism 313 driving the two clamping mechanisms 314 to move closer to each other to clamp the clamping portion 134 of the welding band set 13, and the driving mechanism 313 driving the two clamping mechanisms 314 to move away from each other to release the clamping portion 134 of the welding band set 13. The clamping or release of clamping portion 134 of weld band set 13 is accomplished by drive mechanism 313 and clamping strap assembly 311.
In alternative exemplary embodiments, each clamping strap assembly 311 clamps one strap assembly 13, and clamping strap hand 312 of clamping strap assembly 311 is used to clamp clamping portion 134 of the same strap assembly 13; the plurality of entrainment components 311 are staggered in an array arrangement; so that the first strap segment 131 of a strap set 13 corresponds to the third strap segment 133 of an adjacent strap set 13 along the width of the strap set 13, and so that the adjacent strap sets 13 are disposed at equal intervals along the length of the strap set 13.
Specifically, in this embodiment, each clamping strap assembly 311 clamps one welding strap set 13 assembly, and the clamping strap hand 312 of the same welding strap set 13 is used to clamp the clamping portion 134 of the same welding strap set 13. Because the plurality of welding band groups 13 are staggered to form an array arrangement in the arrangement process, the clamping strap groups 13 are also adaptively staggered to form an array arrangement, so that the length direction of the welding band groups 13 and the equidistant arrangement of the adjacent welding band groups 13 are realized, and the first welding band segment 131 of the welding band group 13 corresponds to the third welding band segment 133 of the adjacent welding band group 13 along the width direction of the welding band group 13, namely, the welding band groups 13 are arranged according to a preset arrangement mode.
It should be further noted that, in the battery string preparation apparatus 30 provided in the embodiment of the present application, the band grabbing device 31 may simultaneously clamp the plurality of welding band sets 13, and the film grabbing device 32 may simultaneously grab the plurality of films 15, so that the whole battery string 10 can be paved through one-time operation, and the preparation efficiency of the battery string 10 is effectively improved.
In the present embodiment, each clamping assembly 311 is provided with two clamping hands 312, and the two clamping hands 312 respectively clamp the clamping portion 134 of the end portion of the first solder strip segment 131 away from the second solder strip segment 132 and the clamping portion 134 of the end portion of the third solder strip segment 133 away from the second solder strip segment 132. It should be understood that, in the present embodiment, the number of the entrainment hands 312 included in each entrainment assembly 311 is not limited, and the number of the entrainment hands 312 included in each entrainment assembly 311 may be three or four according to the specific requirements of the user, and the clamping position of the entrainment hands 312 should avoid the position of the welding band set 13 corresponding to the flat portion 153 of the membrane 15.
In an alternative exemplary embodiment, both the tile adsorbent 323 and the bent adsorbent 325 include a plurality of adsorbent holes.
Specifically, in this embodiment, the tiled adsorbing portion 323 and the bent adsorbing portion 325 each include a plurality of adsorbing holes, and the adsorbing holes are used to adsorb the membrane 15, so as to firmly grasp the membrane 15.
Specifically, in the present embodiment, the bending adsorption portions 325 are symmetrically disposed on two sides of the flat adsorption portion 323, and the adsorption surface of the bending adsorption portion 325 is a convex arc surface, so that the bending portion 151 of the membrane 15 is bent upwards in a direction away from the battery piece 11.
It should be noted that, the adsorption surface is a convex arc surface, so that the membrane 15 is adsorbed and bent, and no crease occurs, so that the membrane 15 can be in a flat state when the membrane 15 is released, and the whole flatness of the battery string 10 is further ensured.
In alternative exemplary embodiments, the curing member includes a heating member.
In particular, in the present embodiment, the curing member is provided as the heating member, so that the curing bonding can be rapidly realized while ensuring the bonding stability in accordance with the properties of the membrane 15.
Specifically, in the present embodiment, the heating member for the first heating may be provided on the side of the flat portion 153 of the film sheet 15 facing away from the battery piece 11, and the first heating and pressing may be directly performed when the flat portion 153 of the film sheet 15 is laid on the solder tape set 13 and the battery piece 11 for the first time. But may also be provided on the front surface of the battery piece 11, for example, on a carrying table 33 carrying the battery piece 11.
In this embodiment, the heating element may be disposed on the front surface of the battery piece 11 in the second curing connection, that is, the battery piece 11, the solder ribbon set 13 and the membrane 15 that are just stacked are integrally moved to the next process, and the bearing table 33 of the next process is provided with a heat source, so that the second curing connection of the whole battery string 10 is realized. By the arrangement, the battery string 10 can be more conveniently and quickly solidified and connected, and is simple and easy to operate and higher in efficiency.
It can be understood that the setting positions of the heating element for the first curing and the second curing are not limited to the above positions, and other tools can be used for the heating element according to the actual requirements of the user, so as to achieve the purpose of heating.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Claims (13)
1. A method of manufacturing a battery string, comprising:
arranging N battery pieces at intervals, wherein N is a positive integer;
the M welding strip groups are staggered to form an array, the M welding strip groups and the N battery pieces are correspondingly arranged at intervals, and each welding strip group comprises a first welding strip section, a second welding strip section and a third welding strip section which are sequentially connected; each welding belt group is provided with at least two clamping parts; a clamping part is arranged on one side of the first welding strip section and one side of the third welding strip section, which are far away from the second welding strip section, wherein M is a positive integer;
placing N films on one side of the M welding strips, which is away from the N battery pieces, wherein the N films are in one-to-one correspondence with the N battery pieces; each diaphragm corresponds to at least two welding strip groups, and each diaphragm corresponds to a first welding strip section of one welding strip group and a third welding strip section of an adjacent welding strip group; the membrane is provided with a bending part and a tiling part, the bending part is positioned at the edges of two opposite sides of the membrane, and the tiling part is positioned between the two bending parts;
The N films and the M welding strip groups are correspondingly paved on N battery pieces, the tiling parts are paved on the back surfaces of the corresponding battery pieces, and at least two welding strip groups are covered between the tiling parts and the battery pieces; performing first curing connection on the stacked flat part, the welding strip group and the battery piece;
releasing the clamping part and the bending part, wherein the bending part covers the clamping part.
2. The method of manufacturing a battery string according to claim 1, wherein releasing the clamping portion and the bent portion further comprises:
and performing secondary curing connection on the whole of the laminated films, the welding strip group and the battery piece to obtain the battery string.
3. The method of manufacturing a battery string according to claim 1, wherein the releasing the clamping portion and the bending portion specifically includes:
simultaneously releasing the clamping part and the bending part; or alternatively, the first and second heat exchangers may be,
the clamping part is released first, and then the bending part is released.
4. The method of claim 2, wherein the first and second cured connections are pressure heat bonded.
5. The method according to claim 1, wherein the positions other than the positions of the solder strip groups corresponding to the flat portions are used as the holding portions.
6. The method of manufacturing a battery string according to claim 2, wherein the welded band group is extended from both ends of the head and tail of the manufactured battery string, and the welded band group is at least partially disposed between the battery sheet and the membrane sheet of the battery string.
7. The method for preparing a battery string according to any one of claims 1 to 6, wherein the M welding strips are staggered in an array, specifically comprising:
the A welding strip groups are arranged at intervals along a first preset direction to form welding strip group rows; the third welding strip section of the welding strip group is close to the first welding strip section of the adjacent welding strip group;
b welding strip groups are arranged at intervals along a second preset direction to form a welding strip group array; the first welding strip sections of the welding strip groups in the even number row correspond to the third welding strip sections of the welding strip groups in the odd number row, the welding strip groups in the even number row correspond to each other, and the welding strip groups in the odd number row correspond to each other; wherein the first preset direction is perpendicular to the second preset direction; a and B are both positive integers, and A, B and M satisfy: m is the product of A and B.
8. A method of manufacturing a photovoltaic module, characterized by comprising the battery string manufacturing method of any one of claims 1 to 7;
the plurality of battery strings manufactured by the battery string manufacturing method are connected in series or in parallel to form a bus assembly;
a filling layer is arranged on two opposite surfaces of the confluence component;
a cover plate is arranged on the outer surfaces of the two filling layers, and the bus assembly covered with the cover plate is heated, so that the filling layers and the outer surfaces of the welding belt groups of the battery strings are welded, and the welding layers of the welding belt groups of the battery strings are welded with grid lines of battery pieces of the battery strings;
and carrying out lamination heating on the confluence component covered with the cover plates, vacuumizing between the two cover plates, and framing to form the photovoltaic component.
9. A battery string production apparatus characterized by being based on the battery string production method according to any one of claims 1 to 7; the battery string preparation equipment comprises a belt grabbing device, a film grabbing device and a bearing table;
the band grabbing device comprises a plurality of band clamping assemblies which are arranged at intervals, and the band clamping assemblies are used for clamping parts of the welding band groups;
The film grabbing device comprises a plurality of film grabbing components which are arranged at intervals, wherein each film grabbing component is provided with a tiled adsorption part and two bending adsorption parts, and the two bending adsorption parts are arranged on two opposite sides of the tiled adsorption part; the tiling adsorption part is used for adsorbing the tiling part, and the bending adsorption part is used for adsorbing the bending part;
the bearing table is used for bearing the battery piece;
the film grabbing device and the belt grabbing device are connected in a sliding mode, so that the belt grabbing device and the film grabbing device are close to or far away from each other, the film grabbing assembly is arranged between gaps of the clamping assembly, the flat part corresponds to the welding belt group, and the clamping part is avoided;
the film grabbing device and the belt grabbing device are respectively and slidably connected with the bearing table so as to enable the film grabbing device and the belt grabbing device to be close to or far away from the bearing table;
and a curing piece is arranged on the bearing table and/or the grabbing membrane assembly.
10. The battery string preparation apparatus of claim 9 wherein the entrainment assembly comprises at least two entrainment hands comprising a drive mechanism and two oppositely disposed clamping mechanisms, the drive mechanism being configured to drive the two clamping mechanisms toward or away from each other to clamp or release the clamping portion.
11. The battery string preparation apparatus of claim 10 wherein each of the strap assemblies holds a strap assembly, the strap hand of the strap assembly being used to hold a grip of the same strap assembly; the plurality of entrainment components are staggered and arranged in an array; so that the adjacent strap assemblies are disposed at equal intervals along the length of the strap set and the first strap segment of the strap set corresponds to the third strap segment of the adjacent strap set along the width of the strap set.
12. The battery string production apparatus according to claim 9, wherein the tiled adsorption portion and the folded adsorption portion each include a plurality of adsorption holes.
13. The battery string preparation apparatus of claim 9, wherein the curing member comprises a heating member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211532914.3A CN115548167B (en) | 2022-12-02 | 2022-12-02 | Battery string preparation method, photovoltaic module preparation method and battery string preparation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211532914.3A CN115548167B (en) | 2022-12-02 | 2022-12-02 | Battery string preparation method, photovoltaic module preparation method and battery string preparation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115548167A CN115548167A (en) | 2022-12-30 |
| CN115548167B true CN115548167B (en) | 2023-05-12 |
Family
ID=84722539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211532914.3A Active CN115548167B (en) | 2022-12-02 | 2022-12-02 | Battery string preparation method, photovoltaic module preparation method and battery string preparation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115548167B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116154044B (en) * | 2023-04-24 | 2023-07-07 | 苏州小牛自动化设备有限公司 | Film pasting method, grabbing mechanism, adhesive film conveying device and battery string welding equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6395972B1 (en) * | 2000-11-09 | 2002-05-28 | Trw Inc. | Method of solar cell external interconnection and solar cell panel made thereby |
| CN109390424A (en) * | 2018-11-15 | 2019-02-26 | 江苏润达光伏无锡有限公司 | The completely black photovoltaic module of pad pasting and its manufacturing method |
| CN212874507U (en) * | 2020-09-29 | 2021-04-02 | 韩华新能源（启东）有限公司 | Lamination assembly with EVA (ethylene vinyl acetate) film and photovoltaic assembly |
| CN114823988B (en) * | 2022-07-01 | 2022-10-25 | 苏州小牛自动化设备有限公司 | Battery string production method and equipment |
-
2022
- 2022-12-02 CN CN202211532914.3A patent/CN115548167B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115548167A (en) | 2022-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115548167B (en) | Battery string preparation method, photovoltaic module preparation method and battery string preparation equipment | |
| WO2009113643A1 (en) | Solar cell module and method of manufacturing the same | |
| CN114823988B (en) | Battery string production method and equipment | |
| TW200905901A (en) | Solar module manufacturing processes | |
| EP4053921A1 (en) | Solar cell string, photovoltaic module and manufacturing methods therefor | |
| CN115621368B (en) | Production equipment for film-sticking back-contact battery strings | |
| US11876146B2 (en) | Photovoltaic (PV) module and method for fabricating the same, and solar cell module and solar cell string | |
| CN103022201A (en) | Crystal silicon solar battery module and manufacturing method thereof | |
| JP2011151334A (en) | Method of manufacturing solar cell module | |
| CN219066869U (en) | Electric core pre-stacking mechanism | |
| CN101635536B (en) | Foldable solar energy movable power supply and manufacture method thereof | |
| CN115206858A (en) | Battery string production equipment and production method | |
| CN113035986A (en) | Single cell, packaging film, solar cell module and manufacturing method thereof | |
| CN110649118B (en) | Piece-splicing photovoltaic module | |
| CN101931016A (en) | The subassembly of semiconductor band | |
| KR20150003258A (en) | Crystal system solar battery module and method for manufacturing same | |
| CN216213504U (en) | Laying device is used in battery cluster production | |
| CN217086600U (en) | Photovoltaic cell string manufacturing device with laminated tile structure and photovoltaic module production equipment | |
| CN115911162A (en) | Back contact photovoltaic module and preparation method thereof | |
| CN114373818A (en) | Solar cell string, cell module and preparation method of cell module | |
| CN115632090A (en) | Film strip processing device and method and series welding machine | |
| CN109802012B (en) | Preparation method of solar cell module | |
| JP5306379B2 (en) | Solar cell module and manufacturing method thereof | |
| CN216871994U (en) | Solar cell string and cell module | |
| CN219959024U (en) | Battery string overturning device and battery string forming device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |