CN115411129A - Solar energy IBC battery series connection assembly - Google Patents

Solar energy IBC battery series connection assembly Download PDF

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Publication number
CN115411129A
CN115411129A CN202211094798.1A CN202211094798A CN115411129A CN 115411129 A CN115411129 A CN 115411129A CN 202211094798 A CN202211094798 A CN 202211094798A CN 115411129 A CN115411129 A CN 115411129A
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CN
China
Prior art keywords
ibc
series
solar
ibc battery
cell
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.)
Pending
Application number
CN202211094798.1A
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Chinese (zh)
Inventor
刘陇刚
杨振英
赵邦桂
管卫卫
付生军
魏云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qinghai Huanghe Hydropower Development Co Ltd
Huanghe Hydropower Development Co Ltd
Xian Solar Power Branch of Qinghai Huanghe Hydropower Development Co Ltd
Xining Solar Power branch of Qinghai Huanghe Hydropower Development Co Ltd
Original Assignee
Qinghai Huanghe Hydropower Development Co Ltd
Huanghe Hydropower Development Co Ltd
Xian Solar Power Branch of Qinghai Huanghe Hydropower Development Co Ltd
Xining Solar Power branch of Qinghai Huanghe Hydropower Development Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qinghai Huanghe Hydropower Development Co Ltd, Huanghe Hydropower Development Co Ltd, Xian Solar Power Branch of Qinghai Huanghe Hydropower Development Co Ltd, Xining Solar Power branch of Qinghai Huanghe Hydropower Development Co Ltd filed Critical Qinghai Huanghe Hydropower Development Co Ltd
Priority to CN202211094798.1A priority Critical patent/CN115411129A/en
Publication of CN115411129A publication Critical patent/CN115411129A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—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
    • H01L31/0516—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 specially adapted for interconnection of back-contact solar cells
    • 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
    • H02S40/36—Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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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  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a solar IBC battery series connection component. This solar energy IBC battery series connection subassembly includes the IBC battery string group of a plurality of series connections, every IBC battery string group includes two IBC battery string units, every IBC battery string unit includes the half IBC battery of a plurality of series connections, every two in the IBC battery string group IBC battery string unit establishes ties through first busbar, establish ties through the second busbar between the IBC battery string group, first busbar with the second busbar all sets up in the battery back. The full-series connection mode is adopted, so that the middle waist line is eliminated, and the white utilization rate and the attractiveness of the assembly are improved; the module type is reduced, the module conversion efficiency is improved, the module material cost is reduced, and new products and choices are provided for the construction and module type selection of the distributed photovoltaic power station.

Description

Solar energy IBC battery series module
Technical Field
The invention belongs to the technical field of photovoltaic modules, and particularly relates to a solar IBC cell series module.
Background
With the development of photovoltaic module technology, photovoltaic modules are widely used at present. In the construction process of the distributed photovoltaic power station, due to the fact that the usable area of a roof or a factory building roof is limited, users mostly select photovoltaic products with high power, high conversion efficiency and attractive and elegant appearance when the components are selected. The PERC battery assembly still has a high share in the current market, and has the problems of white (waist line) left in the middle of the appearance of the assembly and the like, so that the final benefit and the optimal ornamental value of a distributed photovoltaic power station are influenced; especially, in a household distributed photovoltaic power station, a photovoltaic component and a building need to be integrally designed and built in the future, and more severe requirements are provided for the appearance of the photovoltaic component.
As shown in fig. 1, a bus bar (shown in an oval area) is arranged in the middle area of a photovoltaic module in the prior art to converge the current of upper and lower battery plates, so that the gap between the middle areas is large, the bus bar can be seen from the front side of the battery module, that is, the middle of the module appearance is blank, which affects the appearance.
Disclosure of Invention
(I) technical problems to be solved by the invention
The technical problem solved by the invention is as follows: how to improve the appearance aesthetic measure of the photovoltaic cell component.
(II) the technical scheme adopted by the invention
The utility model provides a solar energy IBC battery series connection subassembly, solar energy IBC battery series connection subassembly includes the IBC battery string group of a plurality of series connections, every IBC battery string group includes two IBC battery string units, every IBC battery string unit includes the half IBC battery of a plurality of series connections, every two in the IBC battery string group IBC battery string unit establishes ties through first busbar, establish ties through the second busbar between the IBC battery string group, first busbar with the second busbar all sets up in the battery back.
Preferably, all half IBC cells of each IBC cell string unit are distributed in a row, and the IBC cell string units are arranged side by side.
Preferably, every two adjacent half IBC batteries in each IBC battery string unit are connected in series by stitch welding.
Preferably, the stitch width of each adjacent two half IBC cells ranges from 0.5 mm to 1 mm.
Preferably, the solar IBC cell series module further includes bypass diodes arranged in parallel corresponding to each IBC cell string group one to one, and the bypass diodes are arranged between the IBC cell string units.
Preferably, each bypass diode is connected in parallel with the IBC cell string through the second bus bar.
Preferably, the first bus bars and the second bus bars are respectively located at opposite ends of the IBC battery string unit, and all the first bus bars are located on the same straight line, and all the second bus bars are located on the same straight line.
Preferably, the gap width of the IBC cell string units in each two adjacent rows ranges from 1 mm to 3 mm.
Preferably, the solar IBC cell series module further includes a plurality of insulating bars, a portion of the insulating bars are disposed between the first bus bar and the cell back surface, and another portion of the insulating bars are disposed between the second bus bar and the cell back surface.
(III) advantageous effects
The invention discloses a solar energy IBC battery series connection component, which has the following technical effects compared with the prior art:
on the basis of the original half IBC battery pack mechanism, the full-series connection mode is adopted, so that the middle waist line is eliminated, and the blank utilization rate and the attractiveness of the pack are improved; the module type is reduced, the module conversion efficiency is improved, the module material cost is reduced, and new products and choices are provided for the construction and module type selection of the distributed photovoltaic power station.
Drawings
FIG. 1 is a schematic view of a prior art photovoltaic module;
fig. 2 is a schematic diagram of a solar IBC cell series assembly according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of an IBC battery string according to a first embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
FIG. 5 is an enlarged view of a portion of FIG. 2 at B;
fig. 6 is a schematic diagram of a solar IBC cell series module according to a second embodiment of the present invention.
Reference numerals are as follows:
10-IBC cell string group, 11-IBC cell string unit, 110-half IBC cell, 12-first bus bar; 20-secondary bus bar, 30-bypass diode, 40-insulation bar, 50-solder strip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Before describing in detail various embodiments of the present application, the technical concepts of the present application are first briefly described: the middle area of the photovoltaic module is provided with the bus bar to realize the bus bar of the upper cell and the lower cell in the prior art, and the gap of the middle area is large, so that the blank can be caused, and the appearance is influenced. Therefore, the solar IBC battery series module provided by the application adopts a full series connection mode to connect each battery piece, does not need to set an intermediate bus bar, and avoids influencing the attractiveness of the photovoltaic module. The solar IBC battery series assembly comprises a plurality of half IBC batteries, IBC battery string units, IBC battery string groups and a solar IBC battery series assembly, wherein the IBC battery string units are obtained by connecting a plurality of half IBC batteries in series, every two IBC battery string units are connected in series to obtain the IBC battery string groups, and finally the IBC battery string groups are connected in series to obtain the solar IBC battery series assembly.
Specifically, as shown in fig. 2, the solar IBC battery series assembly of the first embodiment includes a plurality of IBC battery string groups 10 connected in series, each IBC battery string group 10 includes two IBC battery string units 11, each IBC battery string unit 11 includes a plurality of half IBC batteries 110 connected in series, two IBC battery string units 11 in each IBC battery string group 10 are connected in series through a first bus bar 12, the IBC battery string groups 10 are connected in series through a second bus bar 20, and the first bus bar 12 and the second bus bar 20 are both disposed on the back of the assembly.
Further, as shown in fig. 3, all the half IBC cells 110 of each IBC cell string unit 11 are distributed in a row, wherein each two adjacent half IBC cells 110 in each IBC cell string unit 11 are connected in series by stitch welding or in series by non-stitch welding. When the stitch welding series connection mode is adopted, the stitch welding width L2 is 0.5 mm to 1 mm, and when the non-stitch welding series connection mode is adopted, the gap width L1 of the two adjacent half IBC cells 110 is 0.5 mm to 1.5 mm.
Further, the positive and negative electrodes of each adjacent IBC battery string unit 11 are alternately distributed, and each IBC battery string unit is arranged side by side, two IBC battery string units in each IBC battery string group 10 pass through the first bus bar 12, two IBC battery string units 11 of two adjacent IBC battery string groups 10 are connected in series through the second bus bar 20, and the gap width range of two adjacent IBC battery string units 11 is 1 mm to 3 mm.
Further, the first bus bars 12 and the second bus bars 20 are respectively located at opposite ends of the IBC cell string unit 11, and all the first bus bars 12 are located on the same straight line and all the second bus bars 20 are located on the same straight line.
Further, the solar IBC cell series assembly further includes bypass diodes 30 connected in parallel with each of the IBC cell string groups 10 in a one-to-one correspondence, and the bypass diodes 30 are disposed between the IBC cell string units 11. Illustratively, each bypass diode 30 is connected in parallel with the IBC cell string 10 by a second bus bar 20. Each bypass diode 30 controls a certain number of half IBC cells, which can reduce mismatch loss caused by series resistance, reduce component short circuit current, and reduce hot spot risk and internal loss.
Further, as shown in fig. 4 and 5, the solar IBC cell series module further includes a plurality of insulating bars 40, a portion of the insulating bars 40 is disposed between the first bus bar 12 and the back surface of the cell, and another portion of the insulating bars 40 is disposed between the second bus bar 20 and the back surface of the cell, and the first bus bar 12 and the second bus bar 20 can be isolated from the back surface of the cell by the insulating bars 40. The first bus bar 12 and the second bus bar 20 are conducted with the grid lines of the corresponding half IBC battery through the solder strip 50, so that the bus of the battery piece is realized, and meanwhile, the first bus bar 12 and the second bus bar 20 are fixed on the half IBC battery 110 through the solder strip 50.
Illustratively, the solar IBC cell series assembly in fig. 6 includes 3 IBC cell series groups 10 connected in series, each IBC cell series unit 11 includes 20 IBC cell halves 110 connected in series, adjacent IBC cell halves 110 are connected in series by stitch welding, the stitch welding width is 0.5 mm, and the gap width of two adjacent IBC cell series units 11 is 2 mm. Each IBC cell string group 10 is provided with one bypass diode 30 in parallel, and illustratively, one bypass diode 30 is connected in parallel between the b point and the c point, between the d point and the e point, and between the f point and the g point of the second bus bar 20.
The solar IBC cell series module and the photovoltaic cell module disclosed by the embodiment have the following advantages:
1. according to the solar IBC battery series module, the position of a bus bar, namely a waist line, in the middle of the original half IBC module structure is eliminated in a full series connection mode, and the module is better in appearance consistency, more exquisite and more elegant;
2. according to the solar IBC battery series module, the size of the module is reduced due to no need of arranging the middle bus bar, the area is reduced by 2%, and the conversion efficiency is improved by 0.5%;
3. according to the solar IBC battery series-connection component, the maximum output power of the component is improved, and the power per unit area is higher; meanwhile, the current of the component is reduced by half, and the method is more suitable for the construction of a distributed photovoltaic power station.
Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in this embodiment without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims (9)

1. The solar IBC battery series assembly is characterized by comprising a plurality of IBC battery series groups connected in series, each IBC battery series group comprises two IBC battery series units, each IBC battery series unit comprises a plurality of half IBC batteries connected in series, two IBC battery series units in each IBC battery series group are connected in series through first bus bars, the IBC battery series groups are connected in series through second bus bars, and the first bus bars and the second bus bars are arranged on the back surfaces of the batteries.
2. The solar IBC cell series assembly of claim 1, wherein all of the half IBC cells of each IBC cell string unit are distributed in a row, and the IBC cell string units are arranged side by side.
3. The solar IBC cell series assembly of claim 2, wherein each two adjacent half IBC cells in each IBC cell string unit are connected in series by stitch welding.
4. The solar IBC cell series assembly of claim 3, wherein a stitch width of each adjacent two half IBC cells ranges from 0.5 mm to 1 mm.
5. The solar IBC cell series assembly of claim 1, further comprising bypass diodes disposed in parallel with each of the IBC cell string groups in a one-to-one correspondence, the bypass diodes being disposed between the IBC cell string units.
6. The solar IBC cell series assembly of claim 5, wherein each said bypass diode is connected in parallel with said IBC cell string by said second bus bar.
7. The solar IBC cell series assembly of claim 2, wherein the first bus bars and the second bus bars are respectively located at opposite ends of the IBC cell string unit, and all the first bus bars are located on a same straight line and all the second bus bars are located on a same straight line.
8. The solar IBC cell series assembly of claim 2, wherein the gap width of the IBC cell string units in each two adjacent rows is in a range of 1 mm to 3 mm.
9. The solar IBC cell series module of any one of claims 1 to 8, further comprising a plurality of insulating bars, wherein a portion of the insulating bars are disposed between the first bus bars and the back side of the cells, and another portion of the insulating bars are disposed between the second bus bars and the back side of the cells.
CN202211094798.1A 2022-09-08 2022-09-08 Solar energy IBC battery series connection assembly Pending CN115411129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211094798.1A CN115411129A (en) 2022-09-08 2022-09-08 Solar energy IBC battery series connection assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211094798.1A CN115411129A (en) 2022-09-08 2022-09-08 Solar energy IBC battery series connection assembly

Publications (1)

Publication Number Publication Date
CN115411129A true CN115411129A (en) 2022-11-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211094798.1A Pending CN115411129A (en) 2022-09-08 2022-09-08 Solar energy IBC battery series connection assembly

Country Status (1)

Country Link
CN (1) CN115411129A (en)

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