CN110634967B - Front electrode of heterojunction battery and manufacturing method thereof - Google Patents
Front electrode of heterojunction battery and manufacturing method thereof Download PDFInfo
- Publication number
- CN110634967B CN110634967B CN201810643800.3A CN201810643800A CN110634967B CN 110634967 B CN110634967 B CN 110634967B CN 201810643800 A CN201810643800 A CN 201810643800A CN 110634967 B CN110634967 B CN 110634967B
- Authority
- CN
- China
- Prior art keywords
- line
- lines
- main grid
- grid line
- conductive connecting
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 238000003466 welding Methods 0.000 abstract description 12
- 238000007639 printing Methods 0.000 description 47
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022433—Particular geometry of the grid contacts
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a front electrode of a heterojunction battery and a manufacturing method thereof, wherein the front electrode comprises a plurality of main grid lines and a plurality of auxiliary grid lines printed on the surface of the battery, a conductive connecting line is connected above the main grid lines, the width of the conductive connecting line is greater than that of the main grid lines, each main grid line and a plurality of auxiliary grid lines intersected with the main grid line form a connecting area with the same shape and size as the lower surface of the conductive connecting line together, each auxiliary grid line comprises a first section positioned in the connecting area and a second section positioned outside the connecting area, and the thickness of the first section is less than or equal to that of the main grid lines. The invention avoids overlarge gap between the conductive connecting wire and the main grid line electrode during welding, thereby improving the tension between the conductive connecting wire and the main grid line and ensuring the connection reliability of the conductive connecting wire and the main grid line.
Description
Technical Field
The invention relates to the field of batteries, in particular to a front electrode of a heterojunction battery and a manufacturing method thereof.
Background
The front electrode of the conventional heterojunction cell is usually printed with silver paste on the surface of the solar cell by adopting a screen printing mode and used as the front electrode of the cell, and the front electrode comprises a main grid line for being welded with a tin-coated copper strip and a plurality of auxiliary grid lines perpendicular to the main grid line. Currently, a front electrode is generally formed by two-time printing, as shown in fig. 1, only a plurality of parallel secondary grid lines are printed during the first printing, as shown in fig. 2, a second layer of secondary grid lines and a plurality of main grid lines perpendicular to the secondary grid lines are printed in a second-time printing pattern, the two layers of secondary grid lines are overlapped in an area, the thickness of the electrode is increased, and therefore the conductivity is enhanced. By adopting a secondary printing mode, the larger height-width ratio of the secondary grid line can be realized, so that the conductive capacity of the grid line is improved under the condition that the shading area of the light incident surface of the cell is not influenced. However, the main grid line is printed only once, the auxiliary grid line is printed twice, and the main grid line and the auxiliary grid line have thickness difference.
As shown in fig. 3, when the heterojunction battery uses the tin-coated copper strip for welding, in order to avoid welding deviation caused by positioning deviation during welding, the width of the tin-coated copper strip (conductive connection line) is generally slightly wider than the main grid line, taking the main grid line with the width of 0.8mm as an example, the width of the tin-coated copper strip is about 1.0mm, and since the thickness difference exists between the secondary printed secondary grid line and the main grid line, only two sides of the bottom surface of the tin-coated copper strip are connected with the secondary grid line during welding, and a gap exists between most of the area of the bottom surface of the copper strip and the main grid line (the gap size is the thickness difference between the main grid line and the secondary grid line), the tensile force between the tin-coated copper strip and the main grid line of the battery piece after welding is very easy to be too low, and the welding reliability cannot be ensured.
Disclosure of Invention
The invention provides a front electrode of a heterojunction battery, and aims to solve the problem that the connection reliability cannot be ensured due to too low tension between the conventional conductive connecting line and a main grid line.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the front electrode of the heterojunction battery comprises a conductive connecting wire, a plurality of main grid lines and a plurality of auxiliary grid lines, wherein the main grid lines and the auxiliary grid lines are printed on the surface of the battery and are arranged in parallel; the conductive connecting line is arranged above each main grid line, the width of each conductive connecting line is larger than that of each main grid line, and the lower surface of each conductive connecting line is connected with the upper surface of each main grid line; each main grid line and a plurality of auxiliary grid lines intersected with the main grid line form a connecting area with the same shape and size as the lower surface of the conductive connecting line together, the conductive connecting line is fixed on the connecting area, each auxiliary grid line comprises a first section located in the connecting area and a second section located outside the connecting area, and the thickness of the first section is smaller than or equal to that of the main grid line.
According to the front electrode of the heterojunction battery provided by the invention, the thickness of the first section of the secondary grid line in the connection area is designed to be smaller than or equal to that of the main grid line, so that the phenomenon that the gap between the conductive connecting line and the main grid line electrode is too large during welding is avoided, the tensile force between the conductive connecting line and the main grid line is improved, and the connection reliability of the conductive connecting line and the main grid line is ensured.
In addition, the front electrode of the heterojunction cell according to the above embodiment of the invention may also have the following additional technical features:
according to an example of the invention, the width of the first section is greater than the width of the second section, and the thickness of the first section is less than the thickness of the second section.
According to one example of the invention, the first section is formed by at least two printed lines arranged on the surface of the battery in a side-by-side fit mode, and the second section is formed by at least two printed lines which are overlapped from bottom to top.
According to an example of the present invention, the thickness of the bus bar is equal to or greater than the first segment.
According to an example of the invention, each main grid line is formed by two layers of printed lines which are overlapped from bottom to top in sequence.
According to an example of the present invention, the bus bar includes a plurality of first printed lines arranged in parallel and a plurality of second printed lines arranged in parallel, and the first printed lines and the second printed lines are perpendicular.
According to an example of the present invention, the main gate line and the sub gate line are perpendicular to each other.
A second object of the present invention is to provide a method of manufacturing a front electrode of a heterojunction cell, comprising the steps of:
printing secondary grid lines, namely printing a plurality of mutually parallel secondary grid lines on the surface of the battery;
printing a layer of parallel main grid lines on the surface of the battery, wherein the main grid lines are intersected with the auxiliary grid lines;
each main grid line and a plurality of auxiliary grid lines intersected with the main grid line form a connecting area with the same shape and size as the lower surface of the conductive connecting line, each auxiliary grid line comprises a first section located in the connecting area and a second section located outside the connecting area, and the thickness of the first section is smaller than or equal to that of the main grid line.
According to an example of the present invention, the secondary grid line printing includes the steps of:
printing a first layer of secondary grid lines, namely printing a plurality of mutually parallel first layer of secondary grid lines on the surface of the battery;
printing a buffer layer, namely printing a buffer layer grid line beside a first section on each first layer of auxiliary grid line, wherein the buffer layer grid line is attached to the first section of the first layer of auxiliary grid line side by side;
and printing a second layer of secondary grid lines, and printing the second layer of secondary grid lines on the upper surface of the second section on each first layer of secondary grid line.
According to an example of the present invention, the bus bar printing further includes the steps of: and printing another layer of main grid lines on the upper surface of the printed main grid lines.
Advantages of the above additional aspects 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
FIG. 1 is a front first printed image of the background art;
FIG. 2 is a second printing of a background art front side;
fig. 3 is a schematic connection diagram of a bus bar and a conductive connection line in the prior art;
fig. 4 is a schematic connection diagram of a main gate line and a conductive connection line according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a main gate line according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a main gate line; 101. a first printing line; 102. a second printing line; 201. a first stage; 202. a second stage; 2. a secondary gate line; 3. and a conductive connecting line.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example one
The embodiment provides a front electrode of a heterojunction battery, which comprises a plurality of main grid lines 1 and a plurality of auxiliary grid lines 2 which are arranged in parallel and printed on the surface of a battery (not shown in the figure), wherein the main grid lines 1 and the auxiliary grid lines 2 are made of low-temperature silver paste, the main grid lines 1 and the auxiliary grid lines 2 are printed on the surface of a solar battery in a screen printing mode and used as electrodes of the battery, the main grid lines 1 are used for being welded with a conductive connecting line 3, the main grid lines are generally lines with the width of 0.5mm-1.5mm, the auxiliary grid lines 2 are also arranged on the surface of the solar battery and are intersected with the main grid lines 1, and the auxiliary grid lines 2 are generally lines with the width of 30um-80 um.
Each main gate line 1 and a plurality of sub-gate lines 2 of this embodiment intersect, so that the main gate line 1 and the sub-gate lines 2 are conductively connected, specifically, the main gate line 1 and the sub-gate lines 2 are perpendicular to each other, and the amount of low-temperature silver paste can be reduced while the conductive connection between the main gate line 1 and the sub-gate lines is ensured.
The conductive connecting wire 3 of the embodiment is specifically a tin-coated copper strip, the tin-coated copper strip is formed by coating a layer of tin-lead or other alloys on the surface of the copper strip, and electrodes of the solar cells are interconnected through welding. In actual production, in order to avoid welding offset caused by positioning deviation during welding, the width of the conductive connecting line 3 is usually slightly wider than that of the main grid line 1, the lower surface of the conductive connecting line 3 is welded with the upper surface of the main grid line 1, each main grid line and a plurality of auxiliary grid lines intersecting with the main grid line form a connecting area with the same size as the lower surface of the conductive connecting line 3, each auxiliary grid line 2 comprises a first section 201 located in the connecting area and a second section 202 located outside the connecting area, and the thickness of the first section 201 is smaller than or equal to that of the main grid line 1.
Specifically, there are various structural forms for making the thickness of the first segment 201 less than or equal to the thickness of the bus bar 1.
The first structural form is as follows: during printing, the width of the first segment 201 is designed to be larger than that of the second segment 202, and the thickness of the first segment 201 is smaller than or equal to that of the second segment 202, so that the connection stability of the main gate line 1 and the conductive connecting line 3 is ensured, and the conductive performance of the sub-gate line 2 can also be ensured.
Preferably, the first section 201 of the structure is formed by attaching two printed lines arranged on the surface of the battery side by side, and the second section 202 is formed by overlapping the two printed lines from bottom to top, so that the areas of the cross sections of the auxiliary grid lines 2 at any positions along the length direction of the auxiliary grid lines are the same, and stable conductivity is ensured. As shown in fig. 4, of course, in order to facilitate the installation of the conductive connection line 3, the first segment 201 of the finger of the present embodiment may be expanded toward the second segment 202, that is, the width of the connection region formed by the first segments 201 of the finger 2 and the main finger 1 is larger than the width of the conductive connection line 3.
The second form is: the thickness of the main grid line 1 is designed to be larger than or equal to that of the auxiliary grid line 2, the specific implementation mode is that each main grid line 1 is designed to be a structure formed by sequentially overlapping two layers of printing lines from bottom to top, in order to ensure the conductivity of the auxiliary grid line 2, the auxiliary grid line 2 is also designed to be a structure (not shown in the figure) formed by sequentially overlapping two layers of printing lines from bottom to top, and the thicknesses of each layer of main grid line 1 and each layer of auxiliary grid line 2 are preferably the same printing thickness. Of course, the amount of material used for the bus bar 1 is significantly greater than in the first configuration described above.
On the basis of the two schemes, the welding tension between the main grid line 1 and the conductive connecting line 3 can be improved by improving the structure of the main grid line 1, as shown in fig. 5, the main grid line 1 can be designed into a plurality of first printing lines 101 and a plurality of second printing lines 102 which are arranged in parallel, the first printing lines 101 and the second printing lines 102 are perpendicular to each other, when in specific printing, the main grid line area with the primary printing pattern on the front side is designed into a plurality of straight lines which are parallel to the direction of the auxiliary grid line 2, the main grid line area with the secondary printing pattern on the front side is designed into a plurality of straight lines which are perpendicular to the direction of the auxiliary grid line, and the primary printing pattern and the secondary printing pattern are overlapped to form a grid line structure.
Example two
The present embodiment provides a method for manufacturing a front electrode of a heterojunction battery based on the first embodiment, including the following steps:
printing secondary grid lines, namely printing a plurality of secondary grid lines 2 which are parallel to each other on the surface of the battery;
printing a main grid line, namely printing a layer of a plurality of mutually parallel main grid lines 1 on the surface of a battery, wherein the main grid lines 1 are intersected with the auxiliary grid lines 2;
each main grid line 1 and a plurality of auxiliary grid lines 2 intersected with the main grid line 1 jointly form a connecting area with the same shape and size as the lower surface of the conductive connecting line, each auxiliary grid line 2 comprises a first section 201 located in the connecting area and a second section located outside the connecting area, and the thickness of the first section 201 is smaller than or equal to that of the main grid line 1.
Specifically, there are various manufacturing methods for making the thickness of the first segment 201 less than or equal to the thickness of the bus bar 1:
for example, the manufacturing manner of the finger 2 may be improved, and the finger printing of this embodiment includes the following steps:
printing a first layer of secondary grid lines, namely printing a plurality of mutually parallel first layer of secondary grid lines on the surface of the battery;
printing a buffer layer, namely printing a buffer layer grid line beside a first section on each first layer of auxiliary grid line, wherein the buffer layer grid line is attached to the first section of the first layer of auxiliary grid line side by side;
and printing a second layer of secondary grid lines, and printing the second layer of secondary grid lines on the upper surface of the second section on each first layer of secondary grid line.
According to the method, the first section 201 is formed by attaching two printing lines arranged on the surface of the battery side by side, the second section 202 is formed by overlapping the two printing lines from bottom to top, the structure ensures that the areas of any cross sections of the secondary grid lines 2 are the same, stable conductive performance is ensured, and overlarge gaps between the conductive connecting lines and the main grid line electrodes are avoided, so that the tensile force between the conductive connecting lines and the main grid lines is improved, and the connection reliability of the conductive connecting lines and the main grid lines is ensured.
For example, the manufacturing method of the main gate line 1 may be improved, and another layer of main gate line is printed on the upper surface of the printed main gate line, so that the thickness of the main gate line 1 is not less than that of the auxiliary gate line 2. In order to ensure the conductivity of the secondary grid line 2, the secondary grid line 2 is also designed to be a structure formed by sequentially overlapping two layers of printing lines from bottom to top, and the thickness of each layer of the main grid line 1 and the secondary grid line 2 is preferably the same printing thickness. Of course, the amount of the material used for the main grid line 1 is significantly larger than that in the above-mentioned manufacturing method.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. The front electrode of the heterojunction battery comprises a conductive connecting wire, a plurality of main grid lines and a plurality of auxiliary grid lines, wherein the main grid lines and the auxiliary grid lines are printed on the surface of the battery and are arranged in parallel; the conductive connecting line is arranged above each main grid line, the width of each conductive connecting line is larger than that of each main grid line, and the lower surface of each conductive connecting line is connected with the upper surface of each main grid line; the grid line structure is characterized in that each main grid line and a plurality of auxiliary grid lines intersected with the main grid line jointly form a connecting area with the same shape and size as the lower surface of the conductive connecting line, the conductive connecting line is fixed on the connecting area, each auxiliary grid line comprises a first section located in the connecting area and a second section located outside the connecting area, and the thickness of the first section is smaller than or equal to that of the main grid line.
2. The front electrode of a heterojunction cell as in claim 1, wherein the width of said first segment is greater than the width of said second segment, and the thickness of said first segment is less than the thickness of said second segment.
3. The front electrode of a heterojunction cell as claimed in claim 2, wherein the first section is formed by fitting at least two printed lines arranged on the surface of the cell side by side, and the second section is formed by superimposing at least two printed lines from bottom to top.
4. The front electrode of a heterojunction cell as in claim 1, wherein the thickness of the bus bar is equal to or greater than the first segment.
5. The front electrode of a heterojunction cell as claimed in claim 4, wherein each of said bus bars is formed by two layers of printed wires stacked in sequence from bottom to top.
6. A front electrode for a heterojunction cell as claimed in any of claims 1 to 5 wherein said busbar comprises a plurality of first printed lines running in parallel and a plurality of second printed lines running in parallel, said first printed lines and said second printed lines being perpendicular.
7. A front electrode for a heterojunction cell as claimed in any of claims 1 to 5 wherein said major and minor grid lines are perpendicular to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643800.3A CN110634967B (en) | 2018-06-21 | 2018-06-21 | Front electrode of heterojunction battery and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643800.3A CN110634967B (en) | 2018-06-21 | 2018-06-21 | Front electrode of heterojunction battery and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110634967A CN110634967A (en) | 2019-12-31 |
| CN110634967B true CN110634967B (en) | 2021-08-10 |
Family
ID=68966488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810643800.3A Active CN110634967B (en) | 2018-06-21 | 2018-06-21 | Front electrode of heterojunction battery and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110634967B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008270644A (en) * | 2007-04-24 | 2008-11-06 | Matsushita Electric Ind Co Ltd | Tape pasting apparatus and tape pasting method |
| CN102299203A (en) * | 2011-08-25 | 2011-12-28 | 浙江正泰太阳能科技有限公司 | Solar energy cell and solar energy cell right side electrode design method |
| CN104339826A (en) * | 2013-07-30 | 2015-02-11 | 九州方园新能源股份有限公司 | Solar cell main grid hollow positive electrode screen |
| CN106340547A (en) * | 2016-08-31 | 2017-01-18 | 浙江尚越新能源开发有限公司 | Welding structure and method for reducing cost of photovoltaic cell |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011014792A2 (en) * | 2009-07-30 | 2011-02-03 | Evergreen Solar, Inc. | Photovoltaic cell with semiconductor fingers |
| US9947822B2 (en) * | 2015-02-02 | 2018-04-17 | Tesla, Inc. | Bifacial photovoltaic module using heterojunction solar cells |
-
2018
- 2018-06-21 CN CN201810643800.3A patent/CN110634967B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008270644A (en) * | 2007-04-24 | 2008-11-06 | Matsushita Electric Ind Co Ltd | Tape pasting apparatus and tape pasting method |
| CN102299203A (en) * | 2011-08-25 | 2011-12-28 | 浙江正泰太阳能科技有限公司 | Solar energy cell and solar energy cell right side electrode design method |
| CN104339826A (en) * | 2013-07-30 | 2015-02-11 | 九州方园新能源股份有限公司 | Solar cell main grid hollow positive electrode screen |
| CN106340547A (en) * | 2016-08-31 | 2017-01-18 | 浙江尚越新能源开发有限公司 | Welding structure and method for reducing cost of photovoltaic cell |
Non-Patent Citations (2)
| Title |
|---|
| Towards 20% efficient industrial Al-BSF silicon solar cell with multiple busbars and fine gridlines;Nian Chen等;《Solar Energy Materials and Solar Cells》;20160331;第146卷;全文 * |
| 晶体硅太阳能电池片二次印刷中细栅线对主栅焊接拉力影响的研究;刘长飞 等;《中国科技纵横》;20160131(第229期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110634967A (en) | 2019-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2024055674A1 (en) | Soldering method and photovoltaic module | |
| US20200020952A1 (en) | Secondary battery and electrode plate | |
| CN114122630A (en) | Manufacturing method of multi-tab pole piece and manufacturing method of battery cell | |
| US20230253634A1 (en) | Nested pcm battery pack | |
| EP3633766A1 (en) | Electrode member, electrode assembly, and secondary battery | |
| CN208208864U (en) | Lithium ion battery packet lightweight electric connection structure | |
| WO2023103971A1 (en) | Cell | |
| CN202217732U (en) | Battery connecting piece and battery pack | |
| CN211929497U (en) | Novel battery pack leading-out structure | |
| CN110634967B (en) | Front electrode of heterojunction battery and manufacturing method thereof | |
| JP2008186928A (en) | Solar battery and solar battery module | |
| CN112310245B (en) | Battery piece combined printing method and battery piece | |
| CN104067511A (en) | Solar cell module and method of fabricating the same | |
| CN209896080U (en) | Photovoltaic module solder strip and photovoltaic module | |
| CN217824890U (en) | Photovoltaic module | |
| CN218602678U (en) | Connection piece, battery module and battery package | |
| US20190131663A1 (en) | Battery pack protection circuit module | |
| CN216161748U (en) | Grid line structure for step-by-step printing of solar cell | |
| CN209184552U (en) | A kind of photovoltaic module | |
| CN212436005U (en) | Prevent welding FPC structure of rupture | |
| CN215418201U (en) | High-double-face-rate solar cell and cell module | |
| CN117096200B (en) | Solar cell, manufacturing method thereof and photovoltaic module | |
| CN114068746A (en) | Crystalline silicon cell assembly and solar photovoltaic cell panel | |
| CN217641442U (en) | Electrochemical device and electronic apparatus | |
| CN220693392U (en) | Circuit board |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210113 Address after: 101102 102-lq307, 1-3 / F, building 26, 17 huanke Middle Road, Jinqiao Science and technology industrial base, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing Applicant after: Deyun Chuangxin (Beijing) Technology Co.,Ltd. Address before: 100176 10th floor, building 2, yard 9, Ronghua South Road, Yizhuang Economic and Technological Development Zone, Daxing District, Beijing Applicant before: Juntai innovation (Beijing) Technology Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |