CN111112772A - Series welding method of solar cell - Google Patents
Series welding method of solar cell Download PDFInfo
- Publication number
- CN111112772A CN111112772A CN202010057484.9A CN202010057484A CN111112772A CN 111112772 A CN111112772 A CN 111112772A CN 202010057484 A CN202010057484 A CN 202010057484A CN 111112772 A CN111112772 A CN 111112772A
- Authority
- CN
- China
- Prior art keywords
- pressing
- piece
- conductive connecting
- welding method
- solar battery
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0053—Soldering by means of radiant energy soldering by means of I.R.
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a series welding method of a solar cell, which comprises the steps of welding a conductive connecting piece with a front electrode of the cell, pressing the conductive connecting piece on the front electrode through a pressing piece during welding, and covering the front electrode with the pressing piece. The conductive connecting piece is pressed on the front electrode by the pressing piece, and the pressing piece covers the front electrode, so that the front welding area of the conductive connecting piece can be completely and firmly pressed on the front electrode by the pressing piece, and the condition of insufficient welding of the conductive connecting piece and the front electrode can be avoided.
Description
Technical Field
The invention relates to the field of photovoltaics, in particular to a series welding method for solar cells.
Background
Solar modules (also called solar panels, photovoltaic modules) are the core part of solar power generation systems. The solar cell module comprises a cell string, the cell string is composed of a plurality of solar cells which are sequentially laid in series, two adjacent solar cells are connected in series through a conductive connecting piece (such as a welding wire or a welding strip), one end of the conductive connecting piece is welded with a back electrode of one of the solar cells, and the other end of the conductive connecting piece is welded with a front electrode of the other solar cell.
When the conductive connecting piece is welded with the front electrode of the battery piece, the conductive connecting piece needs to be ensured to be attached to the front electrode, otherwise, cold joint easily occurs. At present, a silk screen device is often adopted for welding to press the conductive connecting piece on the front electrode. The screen apparatus includes: the screen frame, and set up a plurality of parallel pressure silk in the screen frame. Specifically, during welding, the screen device is pressed down by a pressing driving mechanism matched with the screen device, then the conductive connecting piece is pressed on the front electrode by the pressing wires, the pressing wires are perpendicular to the conductive connecting piece, a single conductive connecting piece is pressed by two pressing wires, and the two pressing wires are respectively arranged at two ends of a front welding area (the front welding area of the conductive connecting piece, namely the area where the conductive connecting piece is contacted with the front electrode) of the conductive connecting piece.
Although the pressing wire can press the conductive connecting piece downwards, the pressing wire is mainly in line contact with the conductive connecting piece, namely, the area of the conductive connecting piece, which is mainly in contact with the pressing wire, is pressed downwards, and the area of the conductive connecting piece, which is not in contact with the pressing wire (such as the area of the conductive connecting piece, which is located between two pressing wires), is not pressed downwards by the pressing wire, so that the front welding area of the conductive connecting piece cannot be completely and firmly pressed on the front electrode by the pressing wire, and the conductive connecting piece still can be subjected to false welding in a partial area (such as the area of the conductive connecting piece, which is located between two pressing wires).
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a series welding method of a solar cell, which comprises the steps of welding a conductive connecting piece with a front electrode of the cell, pressing the conductive connecting piece on the front electrode through a pressing sheet during welding, and covering the front electrode with the pressing sheet.
Preferably, the front surface of the battery piece is provided with a plurality of front surface electrodes, each front surface electrode is welded with a conductive connecting piece, each front surface electrode is correspondingly provided with a pressing piece, the conductive connecting pieces are pressed on the corresponding front surface electrodes through the pressing pieces during welding, and the pressing pieces cover the corresponding front surface electrodes.
Preferably, the plurality of front electrodes are close to one side edge line of the battery piece, the one side edge line of the battery piece is a straight line, the plurality of front electrodes are sequentially arranged along the extending direction of the one side edge line of the battery piece, the pressing pieces are also sequentially arranged along the extending direction of the one side edge line of the battery piece, the pressing pieces are in one-to-one correspondence with the front electrodes, and the pressing pieces cover the corresponding front electrodes.
Preferably, the plurality of front electrodes are sequentially disposed at equal intervals along an extending direction of one side line of the battery piece, the pressing pieces correspond to the front electrodes one by one, and the pressing pieces cover the corresponding front electrodes.
Preferably, the press sheets are arranged on the same screen unit, which screen unit comprises: the screen frame and a plurality of parallel pressing wires are arranged in the screen frame; each wire pressing is parallel to one side line of the battery piece, and two ends of each wire pressing are respectively fixed on a pair of opposite sides of the screen frame; a single preform is supported by at least two wires and the preform is traversed by the wires supporting the preform.
Preferably, the press plate is a sliding fit with the wire press supporting the press plate.
Preferably, the welding is performed by non-contact heating.
Preferably, the welding is performed by infrared heating.
Preferably, the compressed sheet is a metal sheet.
Preferably, the pressed sheet is a copper sheet.
Preferably, the conductive connecting piece is a welding wire or a welding strip.
The conductive connecting piece is pressed on the front electrode by the pressing piece, and the pressing piece covers the front electrode, so that the front welding area (the front welding area of the conductive connecting piece, namely the area where the conductive connecting piece is contacted with the front electrode) of the conductive connecting piece can be completely and firmly pressed on the front electrode by the pressing piece, and the condition of insufficient welding of the conductive connecting piece and the front electrode can be avoided.
The pressing sheet can be arranged on the existing silk screen device, and only needs to be assembled on the pressing wire of the existing silk screen device, so that the pressing sheet can utilize the existing silk screen device and the matched pressing driving mechanism thereof, the equipment transformation cost is low, and the popularization is facilitated.
Although most of the conventional screen devices are applied to series welding of square or quasi-square plates, with the popularization of small batteries (the small batteries are equally divided into square or quasi-square plates), a screen device matched with the small batteries may appear, and the scheme of the invention can also be applied to the screen device of the small batteries, so that the arrangement of the pressing sheet on the screen device of the small batteries is within the protection scope of the invention.
The pressing sheet is in sliding fit with the pressing wire supporting the pressing sheet, namely the pressing sheet can slide on the pressing wire, so that the position of the pressing sheet is convenient to adjust, and the alignment of the pressing sheet and the corresponding front electrode is facilitated.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
The invention provides a series welding method of a solar cell, which comprises the steps of welding a conductive connecting piece with a front electrode of the cell, pressing the conductive connecting piece on the front electrode through a pressing piece during welding, and covering the front electrode with the pressing piece.
Specifically, the welding may be performed by non-contact heating, for example, by infrared heating.
The pressing sheet can be a metal sheet, and for example, the pressing sheet can be a copper sheet.
The conductive connection may be a wire or a ribbon.
Example 2
On the basis of example 1, the difference lies in:
the front surface of the battery piece is provided with a plurality of front electrodes, each front electrode is welded with a conductive connecting piece, each front electrode is correspondingly provided with a pressing piece, the conductive connecting pieces are pressed on the corresponding front electrodes through the pressing pieces during welding, and the pressing pieces cover the corresponding front electrodes.
Example 3
On the basis of example 2, the difference lies in:
the plurality of front electrodes are close to one side edge line of the battery piece, one side edge line of the battery piece is a straight line, the plurality of front electrodes are sequentially arranged along the extending direction of one side edge line of the battery piece, the pressing pieces are also sequentially arranged along the extending direction of one side edge line of the battery piece, the pressing pieces are in one-to-one correspondence with the front electrodes, and the pressing pieces cover the corresponding front electrodes.
Example 4
On the basis of example 3, the difference lies in:
the plurality of front electrodes are sequentially arranged at equal intervals along the extending direction of one side line of the battery piece, the pressing pieces are also sequentially arranged at equal intervals along the extending direction of one side line of the battery piece, the pressing pieces are in one-to-one correspondence with the front electrodes, and the pressing pieces cover the corresponding front electrodes.
Example 5
On the basis of example 3 or 4, the difference lies in:
each preforming setting is on same silk screen device, and this silk screen device includes: the screen frame and a plurality of parallel pressing wires are arranged in the screen frame; each wire pressing is parallel to one side line of the battery piece, and two ends of each wire pressing are respectively fixed on a pair of opposite sides of the screen frame; a single preform is supported by at least two wires and the preform is traversed by the wires supporting the preform.
Example 6
On the basis of example 5, the difference lies in:
the press plate is in sliding fit with the press wire supporting the press plate.
The conductive connecting piece is pressed on the corresponding front electrode by the pressing piece in each embodiment, and the pressing piece covers the corresponding front electrode, so that the front welding area (the front welding area of the conductive connecting piece, namely the area where the conductive connecting piece is contacted with the front electrode) of the conductive connecting piece can be completely and firmly pressed on the front electrode by the pressing piece, and the condition that the conductive connecting piece and the front electrode are in false welding can be avoided.
In the embodiment 5, the pressing sheet is arranged on the screen device, and the screen device can adopt the existing screen device, namely, the pressing sheet in the invention can be arranged on the existing screen device, and only the pressing sheet is assembled on the wire pressing of the existing screen device, so that the invention can utilize the existing screen device and the matched downward pressing driving mechanism thereof, has low equipment transformation cost, and is beneficial to popularization.
Although most of the conventional screen devices are applied to series welding of square or quasi-square plates, with the popularization of small batteries (the small batteries are equally divided into square or quasi-square plates), a screen device matched with the small batteries may appear, and the scheme of the invention can also be applied to the screen device of the small batteries, so that the arrangement of the pressing sheet on the screen device of the small batteries is within the protection scope of the invention.
The pressing sheet in embodiment 6 is in sliding fit with the pressing wire supporting the pressing sheet, that is, the pressing sheet can slide on the pressing wire, so that the position of the pressing sheet can be conveniently adjusted, and the alignment between the pressing sheet and the corresponding front electrode is facilitated.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (11)
1. The series welding method of the solar cell comprises the step of welding the conductive connecting piece with the front electrode of the cell, and is characterized in that the conductive connecting piece is pressed on the front electrode through the pressing piece during welding, and the pressing piece covers the front electrode.
2. The series welding method for the solar battery plates according to claim 1, wherein the front surface of the solar battery plate is provided with a plurality of front electrodes, each front electrode is welded with a conductive connecting piece, each front electrode is correspondingly provided with a pressing piece, the conductive connecting piece is pressed on the corresponding front electrode through the pressing piece during welding, and the pressing piece covers the corresponding front electrode.
3. The series welding method of the solar battery piece according to claim 2, wherein the plurality of front electrodes are adjacent to one side edge of the battery piece, the one side edge of the battery piece is a straight line, the plurality of front electrodes are sequentially arranged along the extending direction of the one side edge of the battery piece, each pressing piece is also sequentially arranged along the extending direction of the one side edge of the battery piece, the pressing pieces are in one-to-one correspondence with the front electrodes, and the pressing pieces cover the corresponding front electrodes.
4. The series welding method of the solar battery piece according to claim 3, wherein the plurality of front electrodes are sequentially disposed at equal intervals along the extending direction of one side edge of the solar battery piece, the pressing pieces are in one-to-one correspondence with the front electrodes, and the pressing pieces cover the corresponding front electrodes.
5. The series welding method of solar battery plates according to claim 3 or 4, wherein the press plates are disposed on the same screen device, and the screen device comprises: the screen frame and a plurality of parallel pressing wires are arranged in the screen frame; each wire pressing is parallel to one side line of the battery piece, and two ends of each wire pressing are respectively fixed on a pair of opposite sides of the screen frame; a single preform is supported by at least two wires and the preform is traversed by the wires supporting the preform.
6. The series welding method of the solar battery piece according to claim 5, wherein the pressing piece is in sliding fit with the pressing wire supporting the pressing piece.
7. The series welding method of the solar battery piece according to claim 1, characterized in that the welding is performed by non-contact heating.
8. The series welding method of the solar battery piece according to claim 7, characterized in that the welding is performed by an infrared heating method.
9. The series welding method of the solar battery piece according to claim 1, wherein the pressing piece is a metal piece.
10. The series welding method of the solar battery piece according to claim 9, wherein the pressing piece is a copper piece.
11. The series welding method for the solar battery pieces as claimed in claim 1, wherein the conductive connecting piece is a welding wire or a welding strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010057484.9A CN111112772A (en) | 2020-01-19 | 2020-01-19 | Series welding method of solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010057484.9A CN111112772A (en) | 2020-01-19 | 2020-01-19 | Series welding method of solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111112772A true CN111112772A (en) | 2020-05-08 |
Family
ID=70491038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010057484.9A Pending CN111112772A (en) | 2020-01-19 | 2020-01-19 | Series welding method of solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111112772A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128551A (en) * | 2018-08-31 | 2019-01-04 | 杭州瞩日能源科技有限公司 | solar battery sheet series welding system |
| CN109719432A (en) * | 2019-01-30 | 2019-05-07 | 无锡奥特维科技股份有限公司 | A kind of servo-actuated welder and method and string welding machine |
| CN209334968U (en) * | 2018-11-05 | 2019-09-03 | 无锡奥特维科技股份有限公司 | Welding draws compression apparatus and string welding machine |
| CN110405307A (en) * | 2019-05-24 | 2019-11-05 | 宁夏小牛自动化设备有限公司 | One kind being stacked cell piece welding resetting apparatus and repositioning method |
| CN110649126A (en) * | 2019-09-26 | 2020-01-03 | 常州时创能源科技有限公司 | Preparation method of battery string |
-
2020
- 2020-01-19 CN CN202010057484.9A patent/CN111112772A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128551A (en) * | 2018-08-31 | 2019-01-04 | 杭州瞩日能源科技有限公司 | solar battery sheet series welding system |
| CN209334968U (en) * | 2018-11-05 | 2019-09-03 | 无锡奥特维科技股份有限公司 | Welding draws compression apparatus and string welding machine |
| CN109719432A (en) * | 2019-01-30 | 2019-05-07 | 无锡奥特维科技股份有限公司 | A kind of servo-actuated welder and method and string welding machine |
| CN110405307A (en) * | 2019-05-24 | 2019-11-05 | 宁夏小牛自动化设备有限公司 | One kind being stacked cell piece welding resetting apparatus and repositioning method |
| CN110649126A (en) * | 2019-09-26 | 2020-01-03 | 常州时创能源科技有限公司 | Preparation method of battery string |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6870087B1 (en) | Assembly method and apparatus for photovoltaic module | |
| KR101656118B1 (en) | Solar battery, solar battery module, and solar battery system | |
| EP2993708B1 (en) | Laser welding method for connecting crystalline silicon solar cells | |
| CN108687418B (en) | Solder strip connection method of solar cell | |
| EP2362430A1 (en) | A photovoltaic module | |
| CN101488536B (en) | Convergence belt for solar photovoltaic component and method for assembling solar panel by convergence belts | |
| CN207353365U (en) | The integrated BUSBAR busbars that a kind of battery modules use | |
| CN101322252A (en) | Means and method for electrically connecting photovoltaic cells in a solar module | |
| CN103856164B (en) | Terminal box, solar cell and the method for busbar is installed in terminal box | |
| CN216251036U (en) | Battery module of solar heat protection diffusion | |
| CN109216621B (en) | Square cell module | |
| CN212577253U (en) | Auxiliary bending tool for crystalline silicon solar cell module welding strip | |
| CN111244209A (en) | Laminated tile assembly and manufacturing method thereof | |
| CN207282589U (en) | A kind of soft-package battery module | |
| CN206441772U (en) | Soft-package battery module | |
| CN111112772A (en) | Series welding method of solar cell | |
| CN211125669U (en) | High-reliability crystalline silicon solar cell packaging assembly | |
| CN211062731U (en) | Silk screen device for series welding of solar cells | |
| CN213752721U (en) | Solar photovoltaic module | |
| CN102683441A (en) | Solar cell module | |
| CN212874508U (en) | Laminated sheet assembly and photovoltaic assembly | |
| CN211860048U (en) | Five-string photovoltaic assembly | |
| CN210997036U (en) | Pole lug welding tool for grouped soft package power batteries | |
| CN109802012B (en) | Preparation method of solar cell module | |
| CN220041882U (en) | Photovoltaic module |
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 |