CN116387389B - Layout structure and method for replacing 156 battery components by 210 battery components - Google Patents
Layout structure and method for replacing 156 battery components by 210 battery components Download PDFInfo
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- CN116387389B CN116387389B CN202310270750.XA CN202310270750A CN116387389B CN 116387389 B CN116387389 B CN 116387389B CN 202310270750 A CN202310270750 A CN 202310270750A CN 116387389 B CN116387389 B CN 116387389B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000011159 matrix material Substances 0.000 claims abstract description 18
- 238000004021 metal welding Methods 0.000 claims description 44
- 210000004027 cell Anatomy 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 12
- 210000003850 cellular structure Anatomy 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 24
- 229910021419 crystalline silicon Inorganic materials 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
- H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
本发明属于晶体硅太阳能电池组件技术领域，具体涉及210电池组件换货156电池组件的布局结构及方法，本发明的布局结构包括56片210电池片的二分片；56片210电池片的二分片呈4*14矩阵排布且按照之字形排序；在第21片和第22片210电池片的二分片之间设置有第一接线盒，接线盒内含一个二极管；第35片和第36片210电池片的二分片之间的两侧分别设置有第二接线盒和第三接线盒；本发明利用210电池组件的特点，有效匹配156电池组件，解决156电池组件已经停产，没有库存更换问题，并且本发明的两种布局设计将每组电池片更为集中的设计，减少因为太阳照射角度的偏斜而对部分电池片遮挡后产生热斑风险，更换后的太阳能电池组件相对老版156电池组件具有更优的发电性能。
The present invention belongs to the technical field of crystalline silicon solar cell modules, and specifically relates to a layout structure and method for replacing a 210 cell module with a 156 cell module. The layout structure of the present invention comprises two slices of 56 210 cell modules; the two slices of the 56 210 cell modules are arranged in a 4*14 matrix and are arranged in a zigzag pattern; a first junction box is arranged between the two slices of the 21st and 22nd 210 cell modules, and a diode is contained in the junction box; a second junction box and a third junction box are respectively arranged on both sides between the two slices of the 35th and 36th 210 cell modules; the present invention utilizes the characteristics of the 210 cell module to effectively match the 156 cell module, and solves the problem that the 156 cell module has been discontinued and there is no inventory replacement, and the two layout designs of the present invention design each group of cells more concentratedly, reducing the risk of hot spots caused by the shading of part of the cells due to the deviation of the sun's irradiation angle, and the replaced solar cell module has better power generation performance than the old version of the 156 cell module.
Description
Technical Field
The invention belongs to the technical field of solar cells, and particularly relates to a layout structure and a layout method for replacing 156 battery components by 210 battery components.
Background
Along with the increasingly prominent global environmental problems (greenhouse gas emission, atmospheric pollution and the like), the application of new energy sources is actively promoted in various countries to solve the problems of environment, energy source supply, consumption structure and the like, and 2022 statistics data show that the integrated 349.9GW of the Chinese photovoltaic power generation exceeds the wind power installation quantity (344.5 GW) to become a first large renewable energy source, so that the photovoltaic power generation technology and the utilization play a significant role in the structure adjustment of future energy sources and the realization of double carbon targets.
The iteration of the silicon wafer size accelerates the technical innovation of the photovoltaic industry, the silicon wafer with the edge distance of 125mm is mainly used in 2005, then 156 silicon wafer sizes are formed, various silicon wafer sizes such as M2 (156.75 mm), G1 (158.75 mm), M6 (166 mm) and the like are formed successively in 2015, 210mm silicon wafer sizes are formed in 2019, and 18x silicon wafer sizes are formed in 2020. The 2022 end of year large size battery (18X, 210) and component capacity ratio exceeds 80% and silicon wafer size is not expected to increase in the next 5 years. The service life of the photovoltaic module is 20-25 years, damage occurs in the quality guarantee period for the size of the market-released or non-market mainstream silicon wafer, and compatibility in aspects of model, production and manufacturing, electric parameters and the like is realized on the basis of the existing large-size battery (18X, 210 and the like), so that the manufacturing cost is reduced, and the requirements of customers are met.
Disclosure of Invention
The invention aims to overcome the defect that the original battery component stock is not available to be replaced after the old battery component is damaged in the prior art, and provides a layout structure and a layout method for replacing 156 battery components by 210 battery components.
The technical scheme adopted for solving the technical problems is as follows:
The invention discloses a layout structure of a battery pack for a 210 battery pack replacement 156, which is characterized in that: two halves including 56 210 cells; two of the 56 210 battery plates are arranged in a4 x 14 matrix and are ordered according to zigzag; two adjacent serial number 210 battery pieces are interconnected by adopting a metal welding strip; a first junction box is arranged between two pieces of the 21 st piece and the 22 nd piece 210 battery piece; the second junction box and the third junction box are respectively arranged at two sides between the two pieces of the 35 th piece and the 36 th piece 210 battery piece; the cathodes of the two pieces of the 21 st 210 battery piece are electrically connected with the anodes of the first diodes of the first junction box, and the cathodes of the first diodes of the first junction box are connected with the anodes of the two pieces of the 1 st 210 battery piece through a first jumper wire; the cathodes of the two pieces of the 35 th 210 battery piece are electrically connected with the anode of the second diode of the second junction box; the cathode of the second diode is electrically connected with the anode of the 22 nd 210 battery piece; the negative electrode of the 56 th 210 battery plate is electrically connected with the positive electrode of the third diode of the third junction box through the second jumper wire, and the negative electrode of the third diode is electrically connected with the positive electrode of the half-segment of the 36 th 210 battery plate.
The invention also discloses another layout structure of the battery pack used for the 210 battery pack replacement 156, which is characterized in that: two halves including 56 210 cells; two of the 56 210 battery plates are arranged in a4 x 14 matrix and are ordered according to zigzag; two adjacent serial number 210 battery pieces are interconnected through a metal welding strip; the side edges of the two pieces of the 1 st 210 battery piece are provided with a fourth junction box; a fifth junction box is arranged on the side edge of the two pieces of the 28 th 210 battery piece; a sixth junction box is arranged on the side edge of the two pieces of the 29 th 210 battery piece; a seventh junction box is arranged on the side edge of the two pieces of the 56 th 210 battery piece, wherein the negative electrode of the two pieces of the 14 th 210 battery piece is connected to the positive electrode of a fourth diode of the fourth junction box through a third jumper wire, and the negative electrode of the fourth diode is electrically connected with the positive electrode of the two pieces of the 1 st 210 battery piece; the cathodes of the two pieces of the 28 th 210 battery piece are electrically connected with the anode of a fifth diode of a fifth junction box, and the cathodes of the fifth diode are connected with a third jumper wire; the cathodes of the two halves of the 42 th 210 battery piece are electrically connected with the anodes of the sixth diodes of the sixth junction box through a fourth jumper wire, and the cathodes of the sixth diodes are electrically connected with the anodes of the two halves of the 29 th 210 battery piece; the negative electrode of the second tab of the 56 th 210 battery tab is electrically connected with the positive electrode of the seventh diode of the seventh junction box, and the negative electrode of the seventh diode is electrically connected with the fourth jumper wire.
Further, the 156 cell component comprises 60 cells arranged in a 6 x 10 matrix; 156 cell component size 1650mm 992mm; the two-piece size of the 210 battery piece is 105mm x 210mm; the lateral spacing between two halves of adjacent 210 cells was 10.4mm.
The invention also discloses a method for replacing 156 the battery pack by 210 the battery pack, which is characterized in that: the method comprises the following steps:
s1, detaching a damaged cell piece of the 156 cell assembly from a solar cell bracket;
S2, carrying out half-cutting treatment on 28 210 battery pieces to obtain two pieces of 210 battery pieces with the thickness of 56 pieces of 105mm and 210 mm;
s3, connecting two pieces of each 14 210 battery pieces in series with positive and negative polarities by adopting metal welding strips, and connecting the metal welding strips with battery grid lines in an infrared heating mode of a welding machine to form 1 x 14 arrangement;
S4, connecting two pieces of 56 210 battery pieces sequentially through wires according to 4 x 14 zigzag matrix ordering to realize 4 series circuits of 1 x 14;
S5, a long jumper wire, namely a first jumper wire, is led out between the two pieces of the 1 st piece and the 21 st piece 210 battery piece, and a metal welding strip between the first jumper wire and the two pieces of the 21 st piece and the 22 nd piece 210 battery piece is arranged in the first junction box; mounting a solder strip between the 35 th and 36 th sheets and a metal solder strip between the two sheets of the 21 st and 22 th battery sheets in the second junction box; a long bus bar, namely a second jumper wire, is led out between the 56 th piece and the 35 th piece, and the second jumper wire and a metal welding strip between the 35 th piece and the 36 th piece are installed in a third junction box together;
s6, in the first junction box, welding a positive electrode of the first diode and a metal welding strip of a negative electrode of the two pieces of the 21 st 210 battery piece; the cathode of the first diode is welded with the first jumper wire;
S7, welding the cathodes of the two pieces of the 35 th 210 battery piece with the anodes of the second diodes; the cathode of the second diode is welded with the metal welding strip of the anode of the two pieces of the 22 nd 210 th battery piece;
and S8, electrically connecting the cathodes of the two halves of the 56 th 210 battery piece with the anode of the third diode through a second jumper wire, and electrically connecting the cathodes of the third diode with the anode metal welding strip of the two halves of the 36 th 210 battery piece.
The invention also discloses another method for replacing 156 the battery pack by 210 the battery pack, which is characterized in that: the method comprises the following steps:
S1, detaching a damaged 156 battery assembly from a solar battery bracket;
S2, carrying out half-cutting treatment on 28 210 battery pieces to obtain two pieces of 210 battery pieces with the thickness of 56 pieces of 105mm and 210 mm;
s3, connecting two pieces of each 14 210 battery pieces in series with positive and negative polarities by adopting metal welding strips, and connecting the metal welding strips with battery grid lines in an infrared heating mode of a welding machine to form 1 x 14 arrangement;
S4, connecting two pieces of 56 210 battery pieces sequentially through wires according to 4 x 14 zigzag matrix ordering to realize 4 series circuits of 1 x 14;
s5, leading out a long jumper wire, namely a third jumper wire, from the cathodes of two pieces of the 14 th 210 th battery piece; the positive electrode of the 210 st battery piece and the tail end of the third jumper wire are connected into the fourth junction box through a metal welding strip;
S6, connecting the cathodes of the two pieces of the 28 th 210 battery piece and the tail end of the third jumper wire into a fifth junction box through a metal welding strip;
S7, leading out a long jumper wire, namely a fourth jumper wire, from the cathodes of two pieces of the 42 th 210 battery piece; the positive electrode of the two pieces of the 29 th 210 battery piece and the tail end of the fourth jumper wire are connected into the sixth junction box through a metal welding strip;
And S8, connecting the negative electrodes of the two pieces of the 56 th 210 battery piece and the tail ends of the fourth jumper wire into the seventh junction box through a metal welding strip.
The invention discloses a 210 battery piece replacing 156 battery piece structure and a replacing method, which have the beneficial effects that:
the invention utilizes the characteristics of the 210 battery assembly to effectively match the 156 battery assembly, solves the problems that the old 156 battery assembly is stopped and cannot be replaced without stock, and the two layout designs of the invention more intensively design each group of battery pieces, reduce the phenomenon that the battery assembly generates hot spots after shielding part of battery pieces due to the deflection of the solar irradiation angle, and the power generation efficiency of the replaced solar battery assembly is higher than that of the old 156 battery assembly.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the layout of a battery assembly of an old version 156 of the present invention;
FIG. 2 is a schematic layout of embodiment 1 of the present invention;
Fig. 3 is a layout diagram of embodiment 2 of the present invention.
In the figure, 101, a first diode, 102, a second diode, 103, a third diode, 104, a fourth diode, 105, a fifth diode, 106, a sixth diode, 107, a seventh diode, 201, a first jumper, 202, a second jumper, 203, a third jumper, 204, and a fourth jumper are shown.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
As shown in fig. 1, the layout of the battery assembly of the old version 156 is schematically shown, 10 battery pieces in each row are divided into six rows, wherein each two rows are a group, the battery pieces are ordered according to a zigzag, the first group of battery power generation groups is the 1 st to 20 th battery pieces which are electrically connected in sequence, and diodes are connected between the 1 st and 20 th battery pieces; also, the second and third battery power generation groups have the same structure as the first battery power generation group.
The maximum working current of the battery component of the old version 156 is 8.61-8.92A, the maximum power voltage is 30.8-31.4V, and the maximum power is 265-280W. The 210 battery assembly can be matched to the older version 156 battery assembly according to its power and current requirements.
The old version 156 battery pack had dimensions 1650mm 992mm and corresponding glass dimensions 1643mm 985mm.
The cell size of the 210 cell assembly is 210mm x 210mm; half-cutting it forms two halves of 210mm x 105 mm.
In order to effectively adapt to the size of the battery assembly of the old plate 156, the applicant performs optimal design on the basis of completely not wasting battery pieces, and the battery assembly after goods replacement has higher power generation efficiency than the battery assembly of the old plate 156, is not easy to generate hot spots and has longer service life. The invention designs two embodiments based on the design thought of replacing 156 battery pieces by two pieces of the large-size 210 battery pieces.
Examples
The coverage area of the 210 battery assembly is designed according to the design of 1643mm or less and 985mm or less, the design of the minimum creepage distance of 10.4mm and the tolerance of 2mm are overlapped, and two pieces of 14 210 battery assemblies are transversely arranged, namely 105 x 14+10.4 x 13= 1605.2mm or less and 1643mm; plus the longitudinal spacing between the cells, the longitudinal dimension of example 1 satisfies < 985mm. And 210 x 4 (longitudinal 840 mm) has a 96mm pitch advantage over master 156 x 6 (longitudinal 936 mm) with less probability of shadow masking.
Referring to fig. 2, the layout structure of example 1 for replacing 156 battery packs with 210 battery packs includes two halves of 56 210 battery packs; two of the 56 210 battery plates are arranged in a 4 x 14 matrix and are ordered according to zigzag; two adjacent serial number 210 battery pieces are interconnected by adopting a metal welding strip; a first junction box is arranged between two pieces of the 21 st piece and the 22 nd piece 210 battery piece; the second junction box and the third junction box are respectively arranged at two sides between the two pieces of the 35 th piece and the 36 th piece 210 battery piece; the cathodes of the two pieces of the 21 st 210 battery piece are electrically connected with the anodes of the first diodes 101 of the first junction box, and the cathodes of the first diodes 101 of the first junction box are connected with the anodes of the two pieces of the 1 st 210 battery piece through a first jumper 201; the cathodes of the two pieces of the 35 th 210 battery piece are electrically connected with the anode of the second diode 102 of the second junction box; the cathode of the second diode 102 is electrically connected with the anode of the 22 nd 210 battery piece; the negative electrode of the 56 th 210 battery plate is electrically connected with the positive electrode of the third diode 103 of the third junction box through the second jumper wire 202, and the negative electrode of the third diode 103 is electrically connected with the half-divided positive electrode of the 36 th 210 battery plate.
The magnitude of the risk of hot spots (abbreviated as blocked cell heating power P) of the battery assembly is related to the number of bypass diode series cells, and the leakage current level of the blocked cells.
Wherein the method comprises the steps ofReverse voltage of the blocked battery; rsh is a parallel resistor, rs is a series resistor, irev leakage current; in the simplified formula, U1 is the sum of voltages of n-1 pieces of electricity in the same string of battery pieces; UD is the bypass diode forward voltage; as can be seen from the simplified formula, the smaller the Irev leakage current, the larger the Rsh, the smaller the number of cells connected in series with U1, and the lower the temperature of the solar cell in the shielded portion when hot spots occur. On the contrary, the more the number of the bypass diode parallel battery pieces in the series connection junction box is, the larger the reverse bias leakage current is, the more the power consumed by the shielded battery is, the higher the corresponding temperature is, and the larger the risk of hot spots is.
The more the battery pieces are shielded or the larger the shielding area is, the larger the risk of hot spots is, and when the shielding area of any battery piece is more than 90% of the battery pieces, the bypass effect is achieved by the bypass diode, so that the battery pieces are protected in a limited mode, and the battery power generation of the battery power generation group is stopped.
In this embodiment 1, a non-uniform diode parallel battery mode is adopted, that is, the first diode 101 is connected in parallel with 1 to 21pcs 210 battery pieces, the second diode 102 is connected in parallel with 22 to 35pcs 210 battery pieces, the third diode 103 is connected in parallel with 35 to 56pcs 210 battery pieces, when the sun is in the eastern or western direction, for example, the photovoltaic module is vertically installed, and due to the effect of long shadows, the third battery power generation set formed by 36 to 56 th battery pieces is most easily shielded, and the power generation of the other two battery power generation sets is not affected when the power generation set does not generate power. Even if the 1 st to 21 st battery packs and the 36 th to 56 th battery packs are shielded at the same time to cause the first diode 101 and the third diode 103 to bypass at the same time, the 22 nd to 35 th battery packs can still maintain the power generation capacity. According to the embodiment, the three junction boxes are arranged at the middle positions, so that the second group of battery piece power generation groups formed by 22 th to 35 th battery pieces are concentrated together, the probability of being shaded is small, the second group of battery piece power generation groups can be ensured to have higher power generation efficiency, and the generation of hot spots is reduced. When the assembly is transversely mounted, when the 36 th to 56 th battery packs are shielded by shadows, the 1 st to 21 st battery packs and the 22 nd to 35 th battery packs still maintain high power generation efficiency when the second diode 102 bypasses.
The method for replacing 156 a battery pack with 210 a battery pack according to embodiment 1 of the present invention is characterized in that: the method comprises the following steps:
S1, carrying out half-cutting treatment on 28 210 battery pieces to obtain two pieces of 210 battery pieces with the thickness of 56 pieces of 105mm and 210 mm;
S2, interconnecting two pieces of each 14 210 battery pieces by adopting a metal welding strip to carry out positive and negative polarity series connection, and realizing connection of the metal welding strip and a battery grid line in an infrared heating mode of a welding machine to form 1 x 14 arrangement;
S3, connecting two pieces of 56 210 battery pieces sequentially through wires according to 4 x 14 zigzag matrix ordering to realize 4 series circuits of 1 x 14;
S4, a long jumper wire, namely a first jumper wire 201 is led out between the two pieces of the 1 st piece and the 21 st piece 210 battery piece, and a metal welding strip between the first jumper wire 201 and the two pieces of the 21 st piece and the 22 nd piece 210 battery piece is arranged in a first junction box; mounting a solder strip between the 35 th and 36 th sheets and a metal solder strip between the two sheets of the 21 st and 22 th battery sheets in the second junction box; a long bus bar, namely a second jumper wire 202 is led out between the 56 th piece and the 35 th piece, and the second jumper wire 202 and a metal welding strip between the 35 th piece and the 36 th piece are installed in a third junction box together;
S5, in the first junction box, welding a positive electrode of the first diode 101 and a metal welding strip of a negative electrode of the two pieces of the 21 st 210 battery piece; the cathode of the first diode 101 is welded with the first jumper 201;
S6, welding the cathodes of the two pieces of the 35 th 210 battery piece with the anodes of the second diodes 102; the cathode of the second diode 102 is welded with the metal welding strip of the anode of the two pieces of the 22 nd 210 th battery piece;
And S7, electrically connecting the cathodes of the two halves of the 56 th 210 battery piece with the anode of the third diode 103 through the second jumper wire 202, and electrically connecting the cathodes of the third diode 103 with the anode metal welding strips of the two halves of the 36 th 210 battery piece.
The junction box is placed in the middle, and meanwhile, the production process of the battery assembly is combined with the production process of the battery assembly 210 by adding two short jumper wires, so that the compatibility of the battery assembly 156 and the battery assembly of the mass production line 210 is realized.
Examples
Referring to fig. 3, another layout structure for a battery pack replacement 156 with a 210 battery pack includes two halves of 56 210 battery cells; two of the 56 210 battery plates are arranged in a 4 x 14 matrix and are ordered according to zigzag; two adjacent serial number 210 battery pieces are interconnected through a metal welding strip; the side edges of the two pieces of the 1 st 210 battery piece are provided with a fourth junction box; a fifth junction box is arranged on the side edge of the two pieces of the 28 th 210 battery piece; a sixth junction box is arranged on the side edge of the two pieces of the 29 th 210 battery piece; a seventh junction box is arranged on the side edge of the two pieces of the 56 th 210 battery piece, wherein the negative electrode of the two pieces of the 14 th 210 battery piece is connected to the positive electrode of the fourth diode 104 of the fourth junction box through a third jumper 203, and the negative electrode of the fourth diode 104 is electrically connected with the positive electrode of the two pieces of the 1 st 210 battery piece; the cathodes of the two pieces of the 28 th 210 battery piece are electrically connected with the anode of the fifth diode 105 of the fifth junction box, and the cathodes of the fifth diode 105 are connected with the third jumper 203; the cathodes of the two halves of the 42 th 210 battery piece are electrically connected with the anodes of the sixth diodes 106 of the sixth junction box through the fourth jumper 204, and the cathodes of the sixth diodes 106 are electrically connected with the anodes of the two halves of the 29 th 210 battery piece; the negative electrode of the 56 th 210 battery piece is electrically connected with the positive electrode of the seventh diode 107 of the seventh junction box, and the negative electrode of the seventh diode 107 is electrically connected with the fourth jumper 204.
The embodiment realizes the compatibility with 156 battery components by dividing the battery piece of the 210 battery component into two pieces, and accessing two long jumpers and adding two junction boxes.
In this embodiment 2, each row of battery plates is connected with a diode, and each row of battery plates forms a group of battery power generation sets, because shadows are generally blocked in sequence from the lower row to the upper row, the power generation of other battery sets is not affected by the blocking of one row of battery plates, and the risk of generating hot spots is reduced. Compared with 156 battery modules with one battery power generation group in every two rows, the battery power generation efficiency is higher and the risk of generating hot spots is smaller after the battery power generation group is changed by using the embodiment 2.
The method for replacing 156 a battery pack with 210 a battery pack according to embodiment 2 of the present invention is characterized in that: the method comprises the following steps:
S1, carrying out half-cutting treatment on 28 210 battery pieces to obtain two pieces of 210 battery pieces with the thickness of 56 pieces of 105mm and 210 mm;
S2, interconnecting two pieces of each 14 210 battery pieces by adopting a metal welding strip to carry out positive and negative polarity series connection, and realizing connection of the metal welding strip and a battery grid line in an infrared heating mode of a welding machine to form 1 x 14 arrangement;
S3, connecting two pieces of 56 210 battery pieces sequentially through wires according to 4 x 14 zigzag matrix ordering to realize 4 series circuits of 1 x 14;
S4, a long jumper wire, namely a third jumper wire 203 is led out from the cathodes of two pieces of the 14 th 210 battery piece; the positive electrode of the two pieces of the 1 st 210 battery piece and the tail end of the third jumper wire 203 are connected into the fourth junction box through a metal welding strip;
S5, the cathodes of the two pieces of the 28 th 210 battery piece and the tail end of the third jumper 203 are connected into a fifth junction box through metal welding strips;
S6, a long jumper wire, namely a fourth jumper wire 204, is led out from the cathodes of two pieces of the 42 th 210 battery piece; the positive electrode of the two pieces of the 29 th 210 battery piece and the tail end of the fourth jumper 204 are connected into the sixth junction box through metal welding strips;
And S7, connecting the negative electrode of the two pieces of the 56 th 210 battery piece and the tail end of the fourth jumper 204 into the seventh junction box through a metal welding strip.
It should be noted that, the method of changing the product of the present invention may be implemented by using a large-sized 18X battery pack, and the 156.75 battery pack may be replaced in addition to the 156 battery pack.
It should be understood that the above-described specific embodiments are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications which extend from the spirit of the present invention are within the scope of the present invention.
Claims (4)
1. A layout structure for a battery pack replacement 156 with a 210 battery pack, characterized in that: two halves including 56 210 cells; two of the 56 210 battery plates are arranged in a4 x 14 matrix and are ordered according to zigzag; two adjacent serial number 210 battery pieces are interconnected by adopting a metal welding strip; a first junction box is arranged between two pieces of the 21 st piece and the 22 nd piece 210 battery piece; the second junction box and the third junction box are respectively arranged at two sides between the two pieces of the 35 th piece and the 36 th piece 210 battery piece; the cathodes of the two pieces of the 21 st 210 battery piece are electrically connected with the anodes of the first diodes (101) of the first junction box, and the cathodes of the first diodes (101) of the first junction box are connected to the anodes of the two pieces of the 1 st 210 battery piece through a first jumper wire (201); the cathodes of the two pieces of the 35 th 210 battery piece are electrically connected with the anodes of the second diodes (102) of the second junction box; the cathode of the second diode (102) is electrically connected with the anode of the 22 nd 210 battery piece; the negative electrode of the 56 th 210 battery piece is electrically connected with the positive electrode of the third diode (103) of the third junction box through the second jumper wire (202), and the negative electrode of the third diode (103) is electrically connected with the half-divided positive electrode of the 36 th 210 battery piece; the 156 cell component comprises 60 cells arranged in a 6 x 10 matrix; 156 cell component size 1650mm 992mm; the two-piece size of the 210 battery piece is 105mm x 210mm; the lateral spacing between two halves of adjacent 210 cells was 10.4mm.
2. A layout structure for a battery pack replacement 156 with a 210 battery pack, characterized in that: two halves including 56 210 cells; two of the 56 210 battery plates are arranged in a4 x 14 matrix and are ordered according to zigzag; two adjacent serial number 210 battery pieces are interconnected through a metal welding strip; the side edges of the two pieces of the 1 st 210 battery piece are provided with a fourth junction box; a fifth junction box is arranged on the side edge of the two pieces of the 28 th 210 battery piece; a sixth junction box is arranged on the side edge of the two pieces of the 29 th 210 battery piece; a seventh junction box is arranged on the side edge of the two pieces of the 56 th 210 battery piece, wherein the negative electrode of the two pieces of the 14 th 210 battery piece is connected to the positive electrode of a fourth diode (104) of the fourth junction box through a third jumper wire (203), and the negative electrode of the fourth diode (104) is electrically connected with the positive electrode of the two pieces of the 1 st 210 battery piece; the cathodes of the two pieces of the 28 th 210 battery piece are electrically connected with the anode of a fifth diode (105) of a fifth junction box, and the cathodes of the fifth diode (105) are connected with a third jumper wire (203); the cathodes of the two pieces of the 42 th 210 battery piece are electrically connected with the anodes of the sixth diodes (106) of the sixth junction box through a fourth jumper wire (204), and the cathodes of the sixth diodes (106) are electrically connected with the anodes of the two pieces of the 29 th 210 battery piece; the negative electrode of the second piece of the 56 th 210 battery piece is electrically connected with the positive electrode of a seventh diode (107) of the seventh junction box, and the negative electrode of the seventh diode (107) is electrically connected with a fourth jumper wire (204); the 156 cell component comprises 60 cells arranged in a6 x 10 matrix; 156 cell component size 1650mm 992mm; the two-piece size of the 210 battery piece is 105mm x 210mm; the lateral spacing between two halves of adjacent 210 cells was 10.4mm.
3. A method of replacing 156 battery packs with 210 battery packs, the 156 battery packs comprising 60 sheets arranged in a6 x 10 matrix; 156 cell component size 1650mm 992mm; the two-piece size of the 210 battery piece is 105mm x 210mm; the transverse interval between two adjacent 210 battery pieces is 10.4mm; the method is characterized in that: the method comprises the following steps:
S1, carrying out half-cutting treatment on 28 210 battery pieces to obtain two pieces of 210 battery pieces with the thickness of 56 pieces of 105mm and 210 mm;
S2, interconnecting two pieces of each 14 210 battery pieces by adopting a metal welding strip to carry out positive and negative polarity series connection, and realizing connection of the metal welding strip and a battery grid line in an infrared heating mode of a welding machine to form 1 x 14 arrangement;
S3, connecting two pieces of 56 210 battery pieces sequentially through wires according to 4 x 14 zigzag matrix ordering to realize 4 series circuits of 1 x 14;
s4, a long jumper wire, namely a first jumper wire (201), is led out between the two pieces of the 1 st piece and the 21 st piece 210 battery piece, and a metal welding strip between the first jumper wire (201) and the two pieces of the 21 st piece and the 22 nd piece 210 battery piece is arranged in a first junction box; mounting a solder strip between the 35 th and 36 th sheets and a metal solder strip between the two sheets of the 21 st and 22 th battery sheets in the second junction box; a long bus bar, namely a second jumper wire (202), is led out between the 56 th piece and the 35 th piece, and the second jumper wire (202) and a metal welding strip between the 35 th piece and the 36 th piece are installed in a third junction box together;
S5, in the first junction box, welding a positive electrode of the first diode (101) and a metal welding strip of a negative electrode of the two pieces of the 21 st 210 battery piece; the cathode of the first diode (101) is welded with the first jumper wire (201);
S6, welding the cathodes of the two pieces of the 35 th 210 battery piece with the anodes of the second diodes (102); the cathode of the second diode (102) is welded with the metal welding strip of the anode of the two pieces of the 22 nd 210 th battery piece;
And S7, electrically connecting the cathodes of the two halves of the 56 th 210 battery piece with the anodes of the third diodes (103) through the second jumper wire (202), and electrically connecting the cathodes of the third diodes (103) with the anodes of the two halves of the 36 th 210 battery piece.
4. A method of replacing 156 battery packs with 210 battery packs, the 156 battery packs comprising 60 sheets arranged in a6 x 10 matrix; 156 cell component size 1650mm 992mm; the two-piece size of the 210 battery piece is 105mm x 210mm; the transverse interval between two adjacent 210 battery pieces is 10.4mm; the method is characterized in that: the method comprises the following steps:
S1, carrying out half-cutting treatment on 28 210 battery pieces to obtain two pieces of 210 battery pieces with the thickness of 56 pieces of 105mm and 210 mm;
S2, interconnecting two pieces of each 14 210 battery pieces by adopting a metal welding strip to carry out positive and negative polarity series connection, and realizing connection of the metal welding strip and a battery grid line in an infrared heating mode of a welding machine to form 1 x 14 arrangement;
S3, connecting two pieces of 56 210 battery pieces sequentially through wires according to 4 x 14 zigzag matrix ordering to realize 4 series circuits of 1 x 14;
S4, a long jumper wire, namely a third jumper wire (203), is led out from the negative electrodes of the two pieces of the 14 th 210 th battery piece; the positive poles of the two pieces of the 1 st 210 battery piece and the tail ends of the third jumper wires (203) are connected into the fourth junction box through metal welding strips;
S5, the cathodes of the two pieces of the 28 th 210 battery piece and the tail end of the third jumper wire (203) are connected into a fifth junction box through a metal welding strip;
S6, a long jumper wire, namely a fourth jumper wire (204), is led out from the cathodes of two pieces of the 42 th 210 battery piece; the positive electrode of the two pieces of the 29 th 210 battery piece and the tail end of the fourth jumper wire (204) are connected into the sixth junction box through a metal welding strip;
And S7, connecting the negative electrodes of the two pieces of the 56 th 210 battery piece and the tail ends of the fourth jumper wire (204) into the seventh junction box through a metal welding strip.
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| CN110235359A (en) * | 2017-01-31 | 2019-09-13 | 索拉沃特有限责任公司 | Solar module with solar subcells for matrix connection between solar cells |
| CN110491948A (en) * | 2019-09-18 | 2019-11-22 | 天合光能股份有限公司 | A kind of slice photovoltaic module |
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| KR101806980B1 (en) * | 2016-05-10 | 2018-01-10 | 엘지전자 주식회사 | Solar cell module |
| CN110581196A (en) * | 2019-09-18 | 2019-12-17 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module and preparation method thereof |
| CN114068746B (en) * | 2020-07-31 | 2025-02-21 | 苏州腾晖光伏技术有限公司 | Crystalline silicon battery modules and solar photovoltaic panels |
| CN115548160A (en) * | 2021-06-30 | 2022-12-30 | 晶科能源股份有限公司 | Photovoltaic cell string repair device and repair method |
| CN216671663U (en) * | 2021-12-28 | 2022-06-03 | 天合光能股份有限公司 | Photovoltaic module |
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| CN110235359A (en) * | 2017-01-31 | 2019-09-13 | 索拉沃特有限责任公司 | Solar module with solar subcells for matrix connection between solar cells |
| CN110491948A (en) * | 2019-09-18 | 2019-11-22 | 天合光能股份有限公司 | A kind of slice photovoltaic module |
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