Battery string, photovoltaic module and photovoltaic power generation system
By setting a bent section on the conductive connector, the problems of deformation and fracture after welding of the battery cell are solved, the mechanical stability and current collection efficiency of the battery string are improved, the production cost is reduced, and the service life is extended.
Patent Information
- Application Number
- CN202422380262.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In the prior art, the welding between the gate wire of the battery cell and the welding tape is likely to cause the battery cell to deform, the welding tape to break or warp, affecting the mechanical stability and reliability of the battery string.
Setting a bent section on the conductive connectors to enhance their flexibility and mechanical stability, absorb stress during welding connections, avoid cell warping and conductive connector breakage, optimize current collection path, and reduce light shading area and production costs.
It improves the mechanical stability and reliability of the battery string, enhances the current collection efficiency, reduces production costs, and extends the service life of the battery string.
Smart Images
Figure CN223297984U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic components, in particular to a battery string, a photovoltaic component and a photovoltaic power generation system. Background Art
[0002] In the prior art, the grid lines and welding ribbons of the battery cells are connected by welding and then laminated. In the stacked grid battery, the grid lines are continuous line segments from one side to the other. The high temperature generated during the welding process between the welding ribbons and the grid lines may cause the battery cells to deform. In the subsequent lamination process of the battery cells, the welding ribbons are prone to breakage and damage, or the battery cells may remain warped after lamination. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first object of the present invention is to provide a battery string that can improve the mechanical stability and reliability of the battery string as a whole.
[0004] The second object of the present invention is to provide a photovoltaic assembly, comprising the battery string described in the above embodiment.
[0005] The third object of the present invention is to provide a photovoltaic power generation system, comprising the photovoltaic assembly described in the above embodiment.
[0006] According to the embodiment of the first aspect of the present invention, the battery string includes: a plurality of battery cells and a plurality of conductive connectors, wherein the battery cells are provided with a plurality of grid lines, and the plurality of grid lines are arranged at intervals; two adjacent battery cells are electrically connected via a conductive connector, and the conductive connector is arranged on a side of the grid line away from the battery cells, and the conductive connector includes at least one bending section.
[0007] According to the battery string of the embodiment of the present invention, by arranging a bending section on the conductive connector, the length of the conductive connector can be increased, and the flexibility and mechanical stability of the conductive connector can be enhanced. When the conductive connector is connected to the grid line by welding, the high temperature will cause the battery cell to warp to a certain extent. In the subsequent lamination process of the battery cell, the warped battery cell is flattened, and the bending section of the conductive connector can effectively absorb stress to avoid the conductive connector from breaking and damaging during the lamination process. It can also avoid the warping of the battery cell caused by insufficient length of the conductive connector, thereby improving the overall mechanical stability and reliability of the battery string.
[0008] In some embodiments, the conductive connector extends along the length direction of the grid line, the conductive connector and the grid line are opposite to each other along the thickness direction of the battery cell, and the bent section is bent in a direction away from the battery cell.
[0009] In some embodiments, the conductive connecting member includes a plurality of the bending segments, and the plurality of the bending segments are arranged at intervals along the extension direction of the gate line.
[0010] In some embodiments, the bending sections of two adjacent conductive connectors are arranged opposite to each other along a direction perpendicular to the extension direction of the gate line; and / or the bending sections of two adjacent conductive connectors are arranged alternately along a direction perpendicular to the extension direction of the gate line.
[0011] In some embodiments, the plurality of gate lines include: positive gate lines and negative gate lines, the positive gate lines include a plurality of positive gate line segments, the plurality of positive gate line segments are spaced apart along a first direction, the positive gate lines and the negative gate lines are spaced apart along a second direction, the negative gate line segments include a plurality of negative gate line segments, the plurality of negative gate line segments are spaced apart along the first direction, the positive gate line segments and the negative gate line segments are at least partially opposite along the second direction, and the first direction and the second direction are perpendicular.
[0012] In some embodiments, two adjacent positive grid line segments form a first opening, two adjacent negative grid line segments form a second opening, and the first opening and the second opening are arranged opposite to each other along the second direction; or the first opening and the second opening are arranged alternately along the second direction.
[0013] In some embodiments, there are multiple conductive connectors, and the multiple conductive connectors are respectively connected to the multiple grid lines. The multiple conductive connectors include: a first conductive connector and a second conductive connector, the first conductive connector is connected to the positive grid line, and the bending section set on the first conductive connector is opposite to the first opening; the second conductive connector is connected to the negative grid line, and the bending section set on the second conductive connector is opposite to the second opening.
[0014] In some embodiments, the method further includes: a connecting gate line, wherein the connecting gate line is electrically connected to the gate line and intersects with the gate line.
[0015] In some embodiments, the connecting gate lines connecting two adjacent gate lines are arranged opposite to each other along the second direction; and / or the connecting gate lines connecting two adjacent gate lines are staggered along the second direction.
[0016] In some embodiments, when the first opening and the second opening are staggered along the second direction, the connecting grid line arranged on the positive grid line is opposite to the second opening arranged on the adjacent negative grid line along the second direction; and / or, the connecting grid line arranged on the negative grid line is opposite to the first opening arranged on the adjacent positive grid line along the second direction.
[0017] In some embodiments, the connecting gate line includes: a first gate line segment and a second gate line segment, the second gate line segment is connected to the first gate line segment, and the first gate line segment and the second gate line segment are respectively connected to two sides of the same gate line along the second direction.
[0018] In some embodiments, the length of the first gate line segment is L1, and L1 satisfies: 0<L1≤1mm; and / or the length of the second gate line segment is L2, and L2 satisfies: 0<L2≤1mm.
[0019] In some embodiments, the gate lines extend continuously.
[0020] The photovoltaic assembly according to the second embodiment of the present invention includes a battery string according to the first embodiment of the present invention.
[0021] A photovoltaic power generation system according to an embodiment of the third aspect of the present invention includes a photovoltaic assembly according to an embodiment of the second aspect of the present invention.
[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0024] Figure 1 is a schematic diagram of a first embodiment of a battery string according to an embodiment of the present utility model;
[0025] Figure 2 is a schematic diagram of a second embodiment of a battery string according to an embodiment of the present utility model;
[0026] Figure 3 is a schematic diagram of a third embodiment of a battery string according to an embodiment of the present utility model;
[0027] Figure 4 yes Figure 3 Enlarged schematic diagram of the middle P region;
[0028] Figure 5 is a schematic diagram of a fourth embodiment of a battery string according to an embodiment of the present utility model;
[0029] Figure 6 yes Figure 5 Enlarged schematic diagram of the middle Q region;
[0030] Figure 7It is a cross-sectional schematic diagram of a battery cell according to an embodiment of the present utility model.
[0031] Reference numerals:
[0032] 100. Battery string;
[0033] 10. Battery cells;
[0034] 20, gate line; 21, connecting gate line; 22, first gate line segment; 23, second gate line segment; 24, positive gate line; 241, positive gate line segment; 242, first opening; 25, negative gate line; 251, negative gate line segment; 252, second opening;
[0035] 30. Conductive connector; 31. Bend section; 32. First conductive connector; 33. Second conductive connector;
[0036] A. First direction; B. Second direction. DETAILED DESCRIPTION
[0037] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 7 A battery string 100 according to an embodiment of the present invention is described, comprising: a plurality of battery cells 10 and a plurality of conductive connectors 30 , wherein the battery cells 10 have a first direction A and a second direction B.
[0038] Specifically, if Figure 1-Figure 7 As shown, a plurality of grid lines 20 are provided on the battery cell 10, and the plurality of grid lines 20 are arranged at intervals; two adjacent battery cells 10 are electrically connected via a conductive connector 30, and the conductive connector 30 is provided on the side of the grid line 20 away from the battery cell 10, and the conductive connector 30 includes at least one bending section 31.
[0039] Combine Figure 1-Figure 7 The grid lines 20 are provided on at least one side surface of the battery cell 10 body along the thickness direction. The grid lines 20 are used to collect current generated from the surface of the battery cell 10 and direct it to the external circuit. The grid lines 20 extend along a first direction A of the battery cell 10. A plurality of grid lines 20 are evenly spaced along a second direction B of the battery cell 10 on at least one side surface of the battery cell 10 along the thickness direction. The conductive connector 30 is provided on a side of the grid lines 20 away from the battery cell 10 along the thickness direction of the battery cell 10. The conductive connector 30 is suitable for connecting to the grid lines 20. The conductive connector 30 is used to connect the grid lines 20 of adjacent battery cells 10 to achieve a series connection between the battery cells 10. The bent section 31 on the conductive connector 30 is an arched structure formed by at least a portion of the conductive connector 30 being bent and protruded along the thickness direction of the battery cell 10 toward the side away from the battery cell 10.
[0040] According to the battery string 100 of the embodiment of the present invention, by providing a bending section 31 on the conductive connector 30, the length of the conductive connector 30 can be increased, and the flexibility and mechanical stability of the conductive connector 30 can be enhanced. When the conductive connector 30 is connected to the grid line 20 by welding, the high temperature will cause the battery cell 10 to warp to a certain extent. In the subsequent lamination process of the battery cell 10, the warped battery cell 10 is flattened, and the bending section 31 of the conductive connector 30 can effectively absorb stress to avoid the conductive connector 30 from breaking and damaging during the lamination process. It can also avoid the warping of the battery cell 10 caused by insufficient length of the conductive connector 30, thereby improving the overall mechanical stability and reliability of the battery string 100.
[0041] According to some embodiments of the present invention, Figure 1-Figure 7 As shown, the conductive connector 30 extends along the length direction of the grid line 20 , the conductive connector 30 and the grid line 20 are opposite to each other along the thickness direction of the battery cell 10 , and the bent section 31 is bent in a direction away from the battery cell 10 .
[0042] There are multiple conductive connectors 30, each extending along a first direction A of the cell 10. The grid lines 20 also extend along the first direction A of the cell 10. The first direction A of the cell 10 is the lengthwise direction of the grid lines 20. The multiple conductive connectors 30 are adapted to connect one-to-one with the multiple grid lines 20. The bent section 31 on the conductive connector 30 is an arched structure formed by bending at least a portion of the conductive connector 30 along the thickness direction of the cell 10 toward a side away from the cell 10 and extending outward.
[0043] Thus, bending the conductive connector 30 away from the battery cell 10 can avoid interference between the conductive connector 30 and the battery cell 10 . The provision of the bent section 31 can effectively improve the stability and reliability of the battery string 100 during installation and use.
[0044] According to some embodiments of the present invention, Figure 1-Figure 7 As shown, the conductive connector 30 includes a plurality of bent segments 31, which are spaced apart along the extension direction of the grid lines 20. The plurality of bent segments 31 are evenly spaced apart along the first direction A of the battery cell 10. Thus, the provision of the plurality of bent segments 31 can give the conductive connector 30 greater flexibility and mechanical stability, enabling it to better adapt to the deformation of the battery cell 10, thereby improving the overall reliability of the battery string 100 and extending the service life of the battery string 100.
[0045] According to some embodiments of the present invention, Figure 3-Figure 7As shown, the bending sections 31 provided on two adjacent conductive connectors 30 are relatively arranged along the extension direction perpendicular to the gate line 20, a plurality of conductive connectors 30 are spaced apart along the second direction B of the battery cell 10, and the bending sections 31 on two adjacent conductive connectors 30 are relatively arranged along the first direction A of the battery cell 10; or, the bending sections 31 provided on two adjacent conductive connectors 30 are staggered along the extension direction perpendicular to the gate line 20, that is, the bending sections 31 on two adjacent conductive connectors 30 are staggered along the first direction A of the battery cell 10; or, the bending sections 31 provided on at least some adjacent conductive connectors 30 are relatively arranged along the extension direction perpendicular to the gate line 20, and the bending sections 31 provided on some adjacent two conductive connectors 30 are staggered along the extension direction perpendicular to the gate line 20, that is, the bending sections 31 on at least some adjacent two conductive connectors 30 are relatively arranged along the first direction A of the battery cell 10, and the bending sections 31 on at least some adjacent two conductive connectors 30 are staggered along the first direction A of the battery cell 10.
[0046] Thus, the layout of the bending segments 31 on the battery cell 10 can be optimized. The relative arrangement, staggered arrangement or mixed arrangement of the multiple bending segments 31 helps to further disperse the stress and improve the reliability and durability of the battery string 100.
[0047] According to some embodiments of the present invention, Figure 3-Figure 6 As shown, multiple grid lines 20 include: positive grid lines 24 and negative grid lines 25. Along the first direction A of the battery cell 10, the multiple grid lines 20 are evenly spaced, and the positive grid lines 24 and the negative grid lines 25 are alternately spaced. The positive grid lines 24 include multiple positive grid line segments 241. The multiple positive grid line segments 241 are spaced along the first direction A, and the multiple positive grid line segments 241 are opposite each other along the first direction A of the battery cell 10. The positive grid lines 24 and the negative grid lines 25 are spaced along the second direction B. The negative grid line segments 251 include multiple negative grid line segments 251. The multiple negative grid line segments 251 are spaced along the first direction A, and the multiple negative grid line segments 251 are opposite each other along the first direction A of the battery cell 10. The positive grid line segments 241 and the negative grid line segments 251 are at least partially opposite each other along the second direction B, and the first direction A and the second direction B are perpendicular.
[0048] Thus, the design of the positive and negative gridlines 24 and 25 enables the cell 10 to effectively collect current and direct it to the external circuit. The positive gridline segments 241 and the negative gridline segments 251 are spaced apart along the extension direction of their respective gridline segments, which helps to reduce the light-shielding area, improve the photoelectric conversion efficiency, and help to more evenly distribute the current across the entire cell 10.
[0049] According to some embodiments of the present invention, Figure 3-Figure 6As shown, two adjacent positive gridline segments 241 form a first opening 242, and two adjacent negative gridline segments 251 form a second opening 252. The first opening 242 and the second opening 252 are arranged opposite each other along the second direction B, that is, the first opening 242 and the second opening 252 are arranged opposite each other along the second direction B of the battery cell 10; or the first opening 242 and the second opening 252 are arranged alternately along the second direction B, that is, the first opening 242 and the second opening 252 are arranged alternately along the second direction B of the battery cell 10. The first opening 242 and the second opening 252 are adapted to be opposite to the bent section 31 of the conductive connector 30 along the thickness direction of the battery cell 10. The bent section 31 is an arched structure of the conductive connector 30 that is bent and convex along the thickness direction toward the direction away from the battery cell 10. The portion of the surface of the conductive connector 30 adjacent to the battery cell 10 where the bent section 31 is located does not contact the gridline 20, and a certain gap is formed between the bent section 31 and the battery surface.
[0050] Therefore, the relative or staggered setting of the first opening 242 and the second opening 252 helps to further optimize the current collection path, improve the photoelectric conversion efficiency, and optimize the utilization space of the surface of the battery cell 10, which helps to distribute the current more evenly on the entire battery cell 10. Moreover, since the bending section 31 has no contact with the gate line 20, there is no gate line 20 set at the first opening 242 and the second opening 252, which can effectively reduce the material used for the gate line 20 slurry, thereby reducing the production cost of the battery cell 10 and reducing resource waste.
[0051] According to some embodiments of the present invention, Figure 3-Figure 6 As shown, there are multiple conductive connectors 30, and the multiple conductive connectors 30 are respectively connected to the multiple grid lines 20. The multiple conductive connectors 30 include: a first conductive connector 32 and a second conductive connector 33. The first conductive connector 32 is connected to the positive grid line 24, and the bending section 31 set on the first conductive connector 32 is opposite to the first opening 242; the second conductive connector 33 is connected to the negative grid line 25, and the bending section 31 set on the second conductive connector 33 is opposite to the second opening 252.
[0052] The first conductive connector 32 is opposite to the positive electrode grid line 24 along the thickness direction of the battery cell 10, and the bent section 31 provided on the first conductive connector 32 is opposite to the first opening 242 along the thickness direction of the battery cell 10. The second conductive connector 33 is opposite to the negative electrode grid line 25 along the thickness direction of the battery cell 10, and the bent section 31 provided on the second conductive connector 33 is opposite to the second opening 252 along the thickness direction of the battery cell 10.
[0053] Thus, the arrangement of the first conductive connector 32 connected to the positive electrode grid line 24 and the second conductive connector 33 connected to the negative electrode grid line 25 enables the battery cell 10 to effectively collect current and guide it to the external circuit, thereby improving the current collection efficiency of the battery string 100.
[0054] According to some embodiments of the present invention, Figures 1-6 As shown, it also includes: a connecting gate line 21, the connecting gate line 21 is electrically connected to the gate line 20, and the connecting gate line 21 intersects with the gate line 20.
[0055] The gate lines 20 extend along a first direction A of the cell 10 , and the connecting gate lines 21 extend along a second direction B of the cell 10 . The connecting gate lines 21 intersect the main body of the gate lines 20 perpendicularly to form a cross-shaped structure.
[0056] Therefore, the provision of the connecting gate line 21 can increase the area of the gate line 20 in the second direction B, thereby reducing the difficulty of aligning the conductive connector 30 and the gate line 20 when welding, making the welding process easier and more reliable, and reducing the difficulty of producing the battery cell 10.
[0057] According to some embodiments of the present invention, Figure 3-Figure 6 As shown, the connecting grid lines 21 connecting two adjacent grid lines 20 are arranged relative to each other along the second direction B, that is, the connecting grid lines 21 on the two adjacent grid lines 20 are located on the same straight line along the first direction A of the battery cell 10. Alternatively, the connecting grid lines 21 connecting two adjacent grid lines 20 are staggered along the second direction B, that is, the connecting grid lines 21 on the two adjacent grid lines 20 are spaced apart along the first direction A of the battery cell 10. Alternatively, the connecting grid lines 21 provided on at least some of the adjacent two grid lines 20 on the battery cell 10 are arranged relative to each other along a direction perpendicular to the extension of the grid lines 20, and the connecting grid lines 21 provided on at least some of the adjacent two grid lines 20 on the battery cell 10 are staggered along a direction perpendicular to the extension of the grid lines 20 themselves.
[0058] Therefore, the relative or staggered arrangement of the connecting gate lines 21 on adjacent gate lines 20 helps to optimize the space utilization of the surface of the battery cell 10, and when the connecting gate lines 21 set on two adjacent gate lines 20 are staggered along the extension direction perpendicular to the gate lines 20, the connecting gate lines 21 located at both ends of the gate line 20 along the first direction A can be longer in the first direction A than the connecting gate lines 21 located in the middle of the gate line 20, so as to increase the area of the gate line 20 and improve the photoelectric conversion efficiency of the battery cell 10.
[0059] According to some embodiments of the present invention, Figure 3-Figure 6 As shown, when the first opening 242 and the second opening 252 are staggered along the second direction B, the connecting grid line 21 provided on the positive grid line 24 is opposite to the second opening 252 provided on the adjacent negative grid line 25 along the second direction B; or, the connecting grid line 21 provided on the negative grid line 25 is opposite to the first opening 242 provided on the adjacent positive grid line 24 along the second direction B.
[0060] This design improves the overall performance and durability of the battery string 100, particularly by better maintaining circuit integrity in the face of environmental changes. By arranging the connecting grid lines 21 opposite the openings on adjacent grid lines 20, current collection efficiency and the overall electrical performance of the battery cell 10 can be further improved.
[0061] According to some embodiments of the present invention, Figures 1-6 As shown, the connecting gate line 21 includes a first gate line segment 22 and a second gate line segment 23 . The second gate line segment 23 is connected to the first gate line segment 22 . The first gate line segment 22 and the second gate line segment 23 are respectively connected to two sides of the same gate line 20 along the second direction B.
[0062] The first gate line segment 22 and the second gate line segment 23 extend along the second direction B of the battery cell 10. The first gate line segment 22 and the second gate line segment 23 are respectively located on both sides of the gate line 20 along the second direction B of the battery cell 10. One end of the first gate line segment 22 connected to the gate line 20 along the second direction B is suitable for being connected to one end of the second gate line segment 23 connected to the gate line 20 along the second direction B. The other end of the first gate line segment 22 along the second direction B and the other end of the second gate line segment 23 along the second direction B extend in a direction away from each other along the second direction B, that is, the first gate line segment 22 and the second gate line segment 23 are symmetrically distributed along the second direction B.
[0063] Therefore, the arrangement and position distribution of the first gate line segment 22 and the second gate line segment 23 can improve the reliability and stability of the connection between the conductive connector 30 and the gate line 20 , thereby improving the overall structural strength and reliability of the solar cell 10 .
[0064] According to some embodiments of the present invention, Figures 1-6 As shown, the length of the first gate line segment 22 is L1, and L1 satisfies: 0<L1≤1mm; or, the length of the second gate line segment 23 is L2, and L2 satisfies: 0<L2≤1mm; or, the length of the first gate line segment 22 is L1, and the length of the second gate line segment 23 is L2, and L1 and L2 respectively satisfy: 0<L1≤1mm, 0<L2≤1mm. If the length of the first gate line segment 22 or the second gate line segment 23 is greater than 1mm, the length of the first gate line segment 22 or the second gate line segment 23 is too long, which may cause the first gate line segment 22 or the second gate line segment 23 to contact the adjacent gate line 20 and cause a short circuit.
[0065] Therefore, by limiting the length range of the first gate line segment 22 and the second gate line segment 23 , the current collection capability of the cell 10 can be enhanced, thereby improving the photoelectric conversion efficiency of the cell 10 while improving the reliability and stability of the cell 10 .
[0066] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the grid lines 20 extend continuously, that is, the grid lines 20 extend continuously along the first direction A. Therefore, the arrangement of the grid lines 20 extending continuously improves the overall performance and durability of the battery string 100 and can better maintain the integrity of the circuit.
[0067] The photovoltaic assembly according to the second embodiment of the present invention includes the battery string 100 according to the first embodiment of the present invention.
[0068] The photovoltaic module according to the embodiment of the present invention can effectively enhance the reliability and stability of the overall structure of the photovoltaic module by applying the battery string 100 described in the above embodiment, improve the photoelectric conversion efficiency of the photovoltaic module, simplify the manufacturing process of the photovoltaic module, and help improve the overall performance of the photovoltaic module.
[0069] A photovoltaic power generation system according to an embodiment of the third aspect of the present invention includes a photovoltaic assembly according to an embodiment of the second aspect of the present invention.
[0070] The photovoltaic power generation system according to the embodiment of the present invention, by applying the photovoltaic components in the above embodiment, helps to improve the overall power generation efficiency of the photovoltaic power generation system, reduce the production cost of the photovoltaic power generation system, and enhance the reliability of the photovoltaic power generation system.
[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.
[0072] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact via another feature between them. In the description of the present invention, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
[0073] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.
[0074] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A battery string, characterized in that: include: A plurality of battery cells, each of which is provided with a plurality of grid lines, wherein the plurality of grid lines are arranged at intervals; A plurality of conductive connectors are provided to electrically connect two adjacent battery cells via the conductive connectors. The conductive connectors are provided on a side of the grid line away from the battery cells, and the conductive connectors include at least one bent section.
2. The battery string according to claim 1, characterized in that: The conductive connecting member extends along the length direction of the grid line, the conductive connecting member and the grid line are opposite to each other along the thickness direction of the battery cell, and the bent section is bent in a direction away from the battery cell.
3. The battery string according to claim 1, characterized in that: The conductive connecting member includes a plurality of bent segments, and the plurality of bent segments are arranged at intervals along the extending direction of the gate line.
4. The battery string according to claim 1, characterized in that The bent sections of two adjacent conductive connecting members are arranged opposite to each other in a direction perpendicular to the extension direction of the gate line; and / or, The bent sections of two adjacent conductive connecting members are staggered along an extension direction perpendicular to the gate lines.
5. The battery string according to any one of claims 1 to 4, characterized in that: The plurality of gate lines include: A positive grid line, the positive grid line comprising a plurality of positive grid line segments, the plurality of positive grid line segments being spaced apart along a first direction; Negative pole grid lines, the positive pole grid lines and the negative pole grid lines are spaced apart along the second direction, the negative pole grid lines include a plurality of negative pole grid line segments, the plurality of negative pole grid line segments are spaced apart along the first direction, the positive pole grid line segments and the negative pole grid line segments are at least partially opposite along the second direction, and the first direction and the second direction are perpendicular.
6. The battery string according to claim 5, characterized in that: Two adjacent positive grid line segments form a first opening, and two adjacent negative grid line segments form a second opening. The first opening and the second opening are arranged opposite to each other along the second direction; or, The first openings and the second openings are staggered along the second direction.
7. The battery string according to claim 6, characterized in that: There are a plurality of conductive connecting members, each of which is connected to a plurality of gate lines respectively, and the plurality of conductive connecting members include: a first conductive connecting member, the first conductive connecting member being connected to the positive grid line, the bent section provided on the first conductive connecting member being opposite to the first opening; A second conductive connecting member is connected to the negative electrode grid line, and the bent section provided on the second conductive connecting member is opposite to the second opening.
8. The battery string according to claim 6, characterized in that: Also includes: A connecting gate line is electrically connected to the gate line and intersects with the gate line.
9. The battery string according to claim 8, characterized in that: The connecting gate lines connected to two adjacent gate lines are arranged opposite to each other along the second direction; and / or, The connecting gate lines connecting two adjacent gate lines are staggered along the second direction.
10. The battery string according to claim 8, characterized in that When the first opening and the second opening are staggered along the second direction, The connecting grid line provided on the positive grid line is opposite to the second opening provided on the adjacent negative grid line along the second direction; and / or, The connecting grid line provided on the negative grid line is opposite to the first opening provided on the adjacent positive grid line along the second direction.
11. The battery string according to claim 8, characterized in that: The connecting grid lines include: The first grid line segment; A second gate line segment, wherein the second gate line segment is connected to the first gate line segment, and the first gate line segment and the second gate line segment are respectively connected to two sides of the same gate line along the second direction.
12. The battery string according to claim 11, characterized in that The length of the first gate line segment is L1, and L1 satisfies: 0<L1≤1mm; and / or, The length of the second gate line segment is L2, and L2 satisfies: 0<L2≤1mm.
13. The battery string according to any one of claims 1 to 4, characterized in that: The gate lines extend continuously.
14. A photovoltaic module, characterized in that: The method comprises a battery string according to any one of claims 1 to 13.
15. A photovoltaic power generation system, characterized in that: Comprising the photovoltaic module according to claim 14.