CN211125663U - High-density packaging structure suitable for double-sided assembly - Google Patents
High-density packaging structure suitable for double-sided assembly Download PDFInfo
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- CN211125663U CN211125663U CN201922162226.2U CN201922162226U CN211125663U CN 211125663 U CN211125663 U CN 211125663U CN 201922162226 U CN201922162226 U CN 201922162226U CN 211125663 U CN211125663 U CN 211125663U
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- 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
The utility model discloses a high density packaging structure suitable for two-sided subassembly. The battery string comprises a plurality of double-sided battery pieces which are arranged side by side, the edges between the adjacent double-sided battery pieces are mutually attached, the directions of electrodes on the same surface of the adjacent double-sided battery pieces are opposite, the same surface of the adjacent double-sided battery piece is covered with an interconnection strip, and the electrodes in opposite directions on the same surface of the adjacent double-sided battery piece are conductively connected through the interconnection strip, so that a battery string is formed. After adopting foretell structure, thoroughly eliminated the battery piece interval for two-sided subassembly effectively receives the light area to increase by a wide margin under the same version condition, thereby improves subassembly packing density, has effectively avoided in addition that traditionally, interconnect material passes the difference in height that exists by interconnect material arouses in the adjacent battery piece clearance, thereby has effectively reduced lamination piece rate.
Description
Technical Field
The utility model relates to a solar PV modules structure, specific high density packaging structure suitable for two-sided subassembly that says so belongs to solar energy component and makes technical field.
Background
Cost reduction and efficiency improvement are always the goals pursued by photovoltaic practitioners, and with the arrival of the flat-price internet-surfing era, the demand is more urgent; the double-sided power generation assembly is gradually favored by the industry by virtue of excellent power generation performance (high power/back power generation gain); the photovoltaic module is different from the traditional photovoltaic module which only can utilize the illumination incident from the front side, the back side of the double-sided module also has the capability of photoelectric conversion, the power/generated energy gain is obvious, multiple technologies can be used in a superposition mode, the power consumption cost is greatly reduced, and the double-sided module enters the scale production stage along with the gradual maturity of the manufacturing process and the reduction of the corresponding cost.
The double-sided coefficient (Bifi) is an important parameter for evaluating the electrical performance of the double-sided assembly, and represents the ratio of the back power to the front power of the double-sided battery assembly under the STC test condition; with the advance of the double-sided battery pack technology, the power of the front side and the back side of the double-sided battery pack tends to be the same, namely the double-sided coefficient is equal to 1.
In the prior art, the scheme for increasing the packaging density of the double-sided assembly mainly adopts a tiling technology and a splicing technology, wherein the tiling technology is characterized in that minimum unit battery pieces are overlapped with each other, the overlapping area is 0.4-0.6mm, and the overlapping areas are connected by using a welding strip or conductive adhesive; the solution has the disadvantages that the cell pieces are wasted seriously (overlapping area); the overlapping area is prone to fragmentation; the splicing technology is characterized in that the minimum unit cell pieces are connected in series in a mode that an ultra-flexible interconnection strip (used on the back side of a cell) and a triangular welding strip (used on the front side of the cell) are matched with each other, and the distance between every two adjacent cell pieces is 0.5 +/-0.1 mm; the disadvantage of this scheme is that only the inter-wafer spacing is reduced and not completely eliminated; the interconnection strips among the minimum battery units adopt a splicing mode, and the failure risk exists.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a difficult piece, encapsulation are reliable and can effectively increase by a wide margin by photic area to improve the high density packaging structure who is applicable to two-sided subassembly of subassembly packing density.
In order to solve the technical problem, the utility model discloses a high density packaging structure suitable for two-sided subassembly, including the multi-disc double-sided battery piece of arranging side by side, the edge between the adjacent double-sided battery piece laminates each other, and the same on-surface electrode opposite direction of adjacent double-sided battery piece arranges, and the same on-surface that adjacent double-sided battery piece coats and is stamped the interconnection strip, and the same on-surface opposite direction's of adjacent double-sided battery piece electrode passes through the electrically conductive connection of interconnection strip to form the battery cluster.
The number of double-sided battery pieces contained in a single battery string is at least 10.
And the double-sided battery pieces are all positioned on the same horizontal plane.
The resistivity of the interconnecting strip is less than or equal to 0.026 omega-mm2/m。
And the gap between the adjacent double-sided battery pieces is 0.
The size of each double-sided battery piece is 156.75 mm.
After adopting foretell structure, owing to arrange the electrode opposite direction on the same surface of adjacent two-sided battery piece ingeniously and utilize the interconnection strip directly to carry out the electrically conductive connection with the electrode that opposite direction arranged on same surface and form the battery cluster, the battery piece interval has thoroughly been eliminated for two-sided subassembly is under the same type condition, and effective photic area increases by a wide margin, thereby improves subassembly packaging density, and effectively avoided in addition that the interconnection material passes the difference in height that exists by the interconnection material arouses in adjacent battery piece clearance, thereby effectively reduced lamination fragmentation rate.
Drawings
Fig. 1 is a schematic structural view of a high-density package structure suitable for a double-sided module of the present invention.
Detailed Description
The high-density package structure suitable for the double-sided module according to the present invention will be described in detail with reference to the accompanying drawings and the following detailed description.
As shown in the figures, the high-density packaging structure for the double-sided assembly of the present invention comprises a plurality of double-sided battery pieces 1 arranged side by side, wherein the edges between the adjacent double-sided battery pieces 1 are mutually attached, specifically, the gap between the adjacent double-sided battery pieces 1 is 0, and the efficiency of the two sides of the plurality of double-sided battery pieces 1 is the same, so that only the positive and negative electrodes need to be distinguished, the electrodes on the same surface of the adjacent double-sided battery pieces 1 are arranged in opposite directions, that is, in the adjacent double-sided battery pieces, the front surface of one battery piece is the positive electrode, the back surface is the negative electrode, the front surface of the other double-sided battery piece is the negative electrode, and the back surface is the positive; the same surface of adjacent two-sided battery piece 1 coats and is stamped interconnection strip 2, no longer need interconnection strip from the electrode of the upper surface of a two-sided battery piece pass the clearance of adjacent two-sided battery piece to connect the electrode of the lower surface of another two-sided battery piece, consequently, multi-disc two-sided battery piece 1 can arrange on same horizontal plane, the opposite direction's of adjacent two-sided battery piece 1 electrode on the same surface passes through interconnection strip 2 conductive connection to form the battery cluster.
During series connection, the positive electrode and the negative electrode of the double-sided battery piece are sequentially arranged at intervals in a mode shown in figure 1, and the positive electrode and the negative electrode of the adjacent double-sided battery piece are interconnected by using a conductive material (an interconnection strip), and practice proves that the effective light receiving area of the assembly can be effectively increased by typesetting according to the structural design under the condition of the same assembly model: (N-1) sheet spacing/(N cell width), and is compatible with existing equipment, process flow and processing parameters.
Furthermore, the number of the double-sided battery plates 1 contained in a single battery string is at least 10, and the resistivity of the interconnection strips 2 is less than or equal to 0.026 omega mm2The electric conductive performance is good, and single two-sided battery piece 1's size is preferred 156.75mm, and polycrystal 60pcs battery is for example, compares with the polycrystal 60pcs battery version subassembly of the equal specification of conventional, adopts the utility model discloses a structural design, effective battery photic area multiplicable: 1.722 percent.
Claims (6)
1. A high-density packaging structure suitable for double-sided components is characterized in that: including the multi-disc double-sided battery piece (1) of arranging side by side, adjacent edge between the double-sided battery piece (1) laminates each other, and is adjacent the electrode opposite direction on the same surface of double-sided battery piece (1) arranges, and is adjacent the same surface of double-sided battery piece (1) coats and is stamped interconnection strip (2), and is adjacent the opposite direction's on the same surface of double-sided battery piece (1) electrode passes through interconnection strip (2) conductive connection to form the battery cluster.
2. A high-density package structure suitable for a two-sided package as recited in claim 1, wherein: the double-sided battery pieces (1) are all located on the same horizontal plane.
3. A high-density package structure suitable for a double-sided assembly according to claim 1 or 2, wherein: the resistivity of the interconnecting strip (2) is less than or equal to 0.026 omega mm2/m。
4. A high-density package structure for a two-sided package according to claim 3, wherein: and the fit clearance between the adjacent double-sided battery pieces (1) is 0.
5. A high-density package structure suitable for a double-sided module according to claim 1, 2 or 4, wherein: the number of the double-sided battery pieces (1) contained in a single battery string is at least 10.
6. The high-density package structure for double-sided components according to claim 5, wherein: the size of each double-sided battery piece (1) is 156.75 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922162226.2U CN211125663U (en) | 2019-12-05 | 2019-12-05 | High-density packaging structure suitable for double-sided assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922162226.2U CN211125663U (en) | 2019-12-05 | 2019-12-05 | High-density packaging structure suitable for double-sided assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211125663U true CN211125663U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922162226.2U Active CN211125663U (en) | 2019-12-05 | 2019-12-05 | High-density packaging structure suitable for double-sided assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211125663U (en) |
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2019
- 2019-12-05 CN CN201922162226.2U patent/CN211125663U/en active Active
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