Passivation carrier of laminated cell
By designing a passivation carrier for stacked solar cells and controlling the sliding of the movable seat using a support frame and adjustment components, the problem of insufficient gas diffusion caused by the gaps between solar cells was solved, achieving uniform deposition of the passivation layer and improved efficiency.
Patent Information
- Application Number
- CN202423038190.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-10
AI Technical Summary
During the passivation process of tandem solar cells, the gaps between the cells lead to insufficient gas diffusion, resulting in uneven deposition of the passivation layer.
Design a passivation carrier for stacked batteries, including a support frame, a fixed baffle, a movable seat, and an adjusting component. The adjusting component controls the movable seat to slide on the support frame, thereby achieving the clamping and unclamping of the pressure baffle and the fixed baffle, reducing the gap between the battery cells, and improving the gas diffusion.
By reducing the gaps between solar cells, the deposition uniformity and passivation efficiency of the passivation layer were improved.
Smart Images
Figure CN223501854U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of solar cell technology, and more specifically, relates to a passivation carrier for tandem solar cells. Background Technology
[0002] Edge passivation of crystalline silicon solar cells reduces recombination losses at the edges by adding a passivation layer to the edge region of the cell, thereby improving the cell's efficiency. During passivation, multiple cells are stacked to form a cell stack. Upper and lower baffles are placed on the upper and lower surfaces of the stack to cover the grid lines on the front and back of the cells, respectively, before passivation treatment is performed.
[0003] However, during the process of stacking multiple solar cells to form a battery stack, gaps inevitably exist between adjacent cells. When a large number of cells are stacked together, the gaps between them are difficult to control. During the passivation process, the presence of large gaps will cause the cells to have large and uneven coating areas. When the gas material passes through the battery stack, it will not diffuse sufficiently, resulting in uneven deposition of the passivation layer along the four edges of the cells. Utility Model Content
[0004] The purpose of this application is to provide a passivation carrier for stacked batteries to solve the problem in the related art where gaps in the battery stack cause insufficient gas diffusion, resulting in uneven deposition of the four edge passivation layers of the battery cell.
[0005] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:
[0006] A passivation carrier for a stacked battery is provided, comprising:
[0007] Support frame;
[0008] A fixed baffle is installed on the support frame;
[0009] The movable seat is movably mounted on the support frame;
[0010] A pressure baffle is installed on the movable seat and is positioned opposite to the fixed baffle. The pressure baffle and the fixed baffle enclose an area for accommodating the battery stack.
[0011] An adjusting component, mounted on the support frame and connected to the movable seat, is used to control the pressure baffle to move closer to the fixed baffle to clamp the battery stack, and to control the pressure baffle to move away from the fixed baffle to release the clamping of the battery stack.
[0012] In one embodiment, the support frame includes two parallel side plates, an upper connecting plate connecting one end of the two side plates, and a lower connecting plate connecting the other end of the two side plates. One end of the fixed baffle is connected to the upper connecting plate, and the other end of the fixed baffle is connected to the lower connecting plate. The movable seat is located between the upper connecting plate and the lower connecting plate, and both ends of the movable seat are movably mounted on the two side plates respectively. The adjusting member is mounted on one of the side plates.
[0013] In one embodiment, the upper connecting plate has a first through hole for the fixed baffle to pass through, and the movable seat has a second through hole for the fixed baffle to pass through; the pressing baffle passes through the second through hole and the first through hole respectively.
[0014] In one embodiment, the support frame further includes a first abutment mounted on the side of the lower connecting plate facing the movable seat, and the fixed baffle is connected to the first abutment.
[0015] In one embodiment, the support frame further includes a second abutment mounted on the side of the lower connecting plate facing the movable seat, the second abutment being spaced apart from the first abutment, and the fixed baffle and the pressing baffle being disposed between the first abutment and the second abutment.
[0016] In one embodiment, a first buffer ring is installed in the first through hole.
[0017] In one embodiment, a second buffer ring is installed in the second through hole.
[0018] In one embodiment, each of the side plates has a positioning hole, and the two ends of the movable seat are respectively inserted into two of the positioning holes; the adjusting member is installed on the first side plate, and the output end of the adjusting member extends into the corresponding positioning hole and is connected to the movable seat.
[0019] In one embodiment, a stop plate is installed on the second side plate, and an elastic element is installed in the positioning hole on the second side plate. One end of the elastic element abuts against the stop plate, and the other end of the elastic element abuts against the end of the movable seat that extends into the positioning hole.
[0020] In one embodiment, the adjusting member includes a screw and a wing nut, one end of the screw is connected to the movable seat, the other end of the screw extends out of the corresponding side plate, and the wing nut is sleeved on the portion of the screw that extends out of the side plate.
[0021] The passivation carrier for stacked batteries provided in this application has at least the following beneficial effects: This application features a movable seat movably mounted on a support frame, which can be controlled to slide back and forth on the support frame via an adjusting member. When the adjusting member controls the movable seat to move forward, the pressure baffle on the movable seat approaches the fixed baffle. The pressure baffle and the fixed baffle clamp the battery stack, thereby reducing the gap between the multiple battery cells in the battery stack, improving the sufficiency of gas diffusion, and contributing to improved uniformity of passivation deposition. When the adjusting member controls the movable seat to move in the reverse direction, the pressure baffle moves away from the fixed baffle, thus releasing the clamping of the passivated battery stack. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 A cross-sectional schematic diagram of a passivation carrier for a stacked battery provided in an embodiment of this application, showing the battery stack being held in place.
[0024] Figure 2 A cross-sectional schematic diagram of the passivation carrier for the stacked battery provided in the embodiments of this application;
[0025] Figure 3 This is a cross-sectional schematic diagram of the upper connecting plate provided in an embodiment of this application;
[0026] Figure 4 A cross-sectional schematic diagram of the lower connecting plate provided in an embodiment of this application;
[0027] Figure 5 A cross-sectional schematic diagram of the movable seat provided in the embodiments of this application;
[0028] Figure 6 for Figure 2 Enlarged diagram of point A in the middle.
[0029] The main markings in the attached figures are as follows:
[0030] 1. Support frame; 11. Side plate; 111. Positioning hole; 112. Abutment plate; 113. Elastic element; 12. Upper connecting plate; 121. First through hole; 122. First buffer ring; 13. Lower connecting plate; 131. First abutment seat; 132. Second abutment seat;
[0031] 2. Fix the baffle;
[0032] 3. Movable seat; 31. Second through hole; 311. Second buffer ring;
[0033] 4. Pressure baffle;
[0034] 5. Adjusting component; 51. Screw; 52. Wing nut;
[0035] 6. Battery stack. Detailed Implementation
[0036] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0037] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this application, "multiple" means two or more, unless otherwise expressly specified. "Several" means one or more, unless otherwise expressly specified.
[0039] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0041] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrase "in one embodiment" or "in some embodiments" appears in various places throughout the specification, and not all references are to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.
[0042] Please see Figure 1 and Figure 2 The passivation carrier for the stacked battery provided in this application embodiment will now be described. The passivation carrier for the stacked battery includes a support frame 1, a fixed baffle 2, a movable seat 3, a pressing baffle 4, and an adjusting member 5. Optionally, the fixed baffle 2 is mounted on the support frame 1, specifically installed vertically. The movable seat 3 is movably mounted on the support frame 1; the pressing baffle 4 is mounted on the movable seat 3, and the pressing baffle 4 is positioned opposite to the fixed baffle 2, forming an area for accommodating the battery stack 6. The pressing baffle 4 and the fixed baffle 2 are arranged parallel and spaced apart. The battery stack 6 is formed by stacking multiple battery cells, each arranged vertically and spaced parallel to each other. The adjusting member 5 is mounted on the support frame 1 and connected to the movable seat 3, and is used to control the reciprocating movement of the movable seat 3 on the support frame 1. When the adjusting member 5 controls the movable seat 3 to move forward, the pressing baffle 4 moves closer to the fixed baffle 2 to clamp the battery stack 6, thereby reducing the gap between multiple battery cells in the battery stack 6, thus improving the sufficiency of gas diffusion and helping to improve the uniformity of passivation deposition; when the adjusting member 5 controls the movable seat 3 to move in the reverse direction, the pressing baffle 4 moves away from the fixed baffle 2 to release the clamping of the battery stack 6.
[0043] In one embodiment, see Figure 2As a specific embodiment of the passivation carrier for the stacked battery provided in this application, the support frame 1 includes two parallel and spaced side plates 11, an upper connecting plate 12 connecting one end of the two side plates 11, and a lower connecting plate 13 connecting the other end of the two side plates 11. One end of the fixed baffle 2 is connected to the upper connecting plate 12, and the other end of the fixed baffle 2 is connected to the lower connecting plate 13. A movable seat 3 is disposed between the upper connecting plate 12 and the lower connecting plate 13, and both ends of the movable seat 3 are movably mounted on the two side plates 11 respectively. An adjusting member 5 is mounted on one of the side plates 11. The upper connecting plate 12 and the lower connecting plate 13 are arranged parallel and spaced apart, and the movable seat 3 is arranged parallel and spaced apart from both the upper connecting plate 12 and the lower connecting plate 13 respectively. The two ends of the upper connecting plate 12 can be connected to the two side plates 11 by screws or the like; the two ends of the lower connecting plate 13 can also be connected to the two side plates 11 by screws or the like. This structure, by setting the support frame 1 as two side plates 11, an upper connecting plate 12 and a lower connecting plate 13, helps to improve the overall strength of the support frame 1 and also facilitates the disassembly, assembly and maintenance of the support frame 1.
[0044] In one embodiment, see Figure 2 , Figure 3 and Figure 5 As a specific embodiment of the passivation carrier for the stacked battery provided in this application, the upper connecting plate 12 has a first through hole 121 for the fixed baffle 2 to pass through, and the movable seat 3 has a second through hole 31 for the fixed baffle 2 to pass through; the pressing baffle 4 is respectively disposed through the second through hole 31 and the first through hole 121. The battery stack 6 can sequentially pass through the first through hole 121 and the second through hole 31 and be accommodated in the area formed by the fixed baffle 2 and the pressing baffle 4. This structure, through the first through hole 121 and the second through hole 31, can limit the movement of the fixed baffle 2 and the pressing baffle 4, and can also position the battery stack 6.
[0045] In one embodiment, the upper connecting plate 12 may have multiple first through holes 121, which may be arranged in a row. Correspondingly, the number of second through holes 31, the number of first through holes 121, the number of fixing baffles 2, and the number of pressing baffles 4 are the same. The multiple second through holes 31 are respectively aligned with the multiple first through holes 121, and the multiple fixing baffles 2 and the multiple pressing baffles 4 are respectively disposed through the multiple first through holes 121 and the multiple second through holes 31. This structure, by setting multiple fixing baffles 2 and multiple pressing baffles 4, can clamp and fix multiple battery stacks 6 at one time, thereby enabling multiple battery stacks 6 to be passivated at one time, which helps to improve the passivation efficiency of the battery stacks 6.
[0046] In one embodiment, see Figure 2 and Figure 4As a specific embodiment of the passivation carrier for the stacked battery provided in this application, the support frame 1 further includes a first abutment 131 mounted on the side of the lower connecting plate 13 facing the movable seat 3, and the fixed baffle 2 is connected to the first abutment 131. In this structure, the first abutment 131 can abut and limit the fixed baffle 2, facilitating the installation of the fixed baffle 2. When there are multiple fixed baffles 2, the number of first abutments 131 is the same as the number of fixed baffles 2.
[0047] In one embodiment, see Figure 2 and Figure 4 As a specific embodiment of the passivation carrier for the stacked battery provided in this application, the support frame 1 further includes a second abutment 132 mounted on the side of the lower connecting plate 13 facing the movable seat 3. The second abutment 132 is spaced apart from the first abutment 131, and a fixed baffle 2 and a pressing baffle 4 are disposed between the first abutment 131 and the second abutment 132. In this structure, the second abutment 132 can block and limit the pressing baffle 4, and the second abutment 132 and the first abutment 131 cooperate to limit the fixed baffle 2 and the pressing baffle 4. Wherein, when there are multiple first abutment 131s, the number of second abutment 132s is the same as the number of first abutment 131s.
[0048] In one embodiment, see Figure 3 As a specific embodiment of the passivation carrier for the stacked battery provided in this application, a first buffer ring 122 is installed in the first through hole 121. In this structure, the first buffer ring 122 covers the inner edge of the first through hole 121 in a ring-shaped arrangement. The first buffer ring 122 can respectively block the pressure baffle 4 and the fixed baffle 2, thereby providing buffer protection for the fixed baffle 2 and the pressure baffle 4. Wherein, when there are multiple first through holes 121, the number of first buffer rings 122 is the same as the number of first through holes 121.
[0049] In one embodiment, see Figure 5 As a specific embodiment of the passivation carrier for the stacked battery provided in this application, a second buffer ring 311 is installed in the second through hole 31. In this structure, the second buffer ring 311 is arranged in a ring shape, covering the inner edge of the second through hole 31. The second buffer ring 311 can respectively block the pressure baffle 4 and the fixed baffle 2, thereby providing buffer protection for the fixed baffle 2 and the pressure baffle 4. Wherein, when there are multiple second through holes 31, the number of second buffer rings 311 is the same as the number of second through holes 31.
[0050] In one embodiment, see Figure 2 and Figure 6In one specific embodiment of the passivation carrier for the stacked battery provided in this application, each side plate 11 has a positioning hole 111, and the two ends of the movable seat 3 are respectively inserted into two positioning holes 111; the adjusting member 5 is installed on the first side plate 11, and the output end of the adjusting member 5 extends into the corresponding positioning hole 111 and is connected to the movable seat 3. In this structure, by inserting the two ends of the movable seat 3 into the two positioning holes 111 respectively, the two positioning holes 111 can realize the positioning and sliding of the movable seat 3, thereby realizing the reciprocating sliding of the movable seat 3 on the support frame 1.
[0051] In one embodiment, see Figure 6 As a specific embodiment of the passivation carrier for the stacked battery provided in this application, a stop plate 112 is mounted on the second side plate 11, and an elastic member 113 is installed in the positioning hole 111 on the second side plate 11. One end of the elastic member 113 abuts against the stop plate 112, and the other end of the elastic member 113 abuts against the end of the movable seat 3 that extends into the positioning hole 111. The first side plate 11 mentioned above can be understood as... Figure 2 The second side plate 11, located on the left side, can be understood as... Figure 2 The side plate 11 is located on the right side. The elastic element 113 can be a spring. In this structure, the elastic element 113 can buffer and protect the sliding of the movable seat 3, and can also restore and push the movable seat 3.
[0052] In one embodiment, see Figure 2 As a specific embodiment of the passivation carrier for the stacked battery provided in this application, the adjusting member 5 includes a screw 51 and a wing nut 52. One end of the screw 51 is connected to the movable seat 3, and the other end of the screw 51 extends out of the corresponding side plate 11. The wing nut 52 is sleeved on the part of the screw 51 that extends out of the side plate 11. In this structure, the position is adjusted by rotating the wing nut 52 on the screw 51, which in turn drives the movable seat 3 to reciprocate on the support frame 1, thereby controlling the pressure baffle 4 to move closer to or further away from the fixed baffle 2.
[0053] In some embodiments, the adjusting member 5 may also be a cylinder, electric cylinder, etc., directly connected to the movable seat 3, and this is not the only limitation.
[0054] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A passivation carrier for a stacked battery, characterized in that, include: Support frame; A fixed baffle is installed on the support frame; The movable seat is movably mounted on the support frame; A pressure baffle is installed on the movable seat and is positioned opposite to the fixed baffle. The pressure baffle and the fixed baffle enclose an area for accommodating the battery stack. An adjusting component, mounted on the support frame and connected to the movable seat, is used to control the pressure baffle to move closer to the fixed baffle to clamp the battery stack, and to control the pressure baffle to move away from the fixed baffle to release the clamping of the battery stack.
2. The passivation carrier for the stacked battery as described in claim 1, characterized in that: The support frame includes two parallel side plates, an upper connecting plate connecting one end of the two side plates, and a lower connecting plate connecting the other end of the two side plates. One end of the fixed baffle is connected to the upper connecting plate, and the other end of the fixed baffle is connected to the lower connecting plate. The movable seat is located between the upper connecting plate and the lower connecting plate, and both ends of the movable seat are movably mounted on the two side plates respectively. The adjusting member is mounted on one of the side plates.
3. The passivation carrier for the stacked battery as described in claim 2, characterized in that: The upper connecting plate has a first through hole for the fixed baffle to pass through, and the movable seat has a second through hole for the fixed baffle to pass through; the pressing baffle passes through the second through hole and the first through hole respectively.
4. The passivation carrier for the stacked battery as described in claim 2, characterized in that: The support frame further includes a first abutment mounted on the side of the lower connecting plate facing the movable seat, and the fixed baffle is connected to the first abutment.
5. The passivation carrier for the stacked battery as described in claim 4, characterized in that: The support frame further includes a second abutment mounted on the side of the lower connecting plate facing the movable seat. The second abutment is spaced apart from the first abutment, and the fixed baffle and the pressing baffle are located between the first abutment and the second abutment.
6. The passivation carrier for the stacked battery as described in claim 3, characterized in that: A first buffer ring is installed in the first through hole.
7. The passivation carrier for the stacked battery as described in claim 3, characterized in that: A second buffer ring is installed in the second through hole.
8. The passivation carrier for the stacked battery as described in claim 2, characterized in that: Each of the side plates has a positioning hole, and the two ends of the movable seat are respectively inserted into the two positioning holes; the adjusting member is installed on the first side plate, and the output end of the adjusting member extends into the corresponding positioning hole and is connected to the movable seat.
9. The passivation carrier for the stacked battery as described in claim 8, characterized in that: A stop plate is installed on the second side plate, and an elastic element is installed in the positioning hole on the second side plate. One end of the elastic element abuts against the stop plate, and the other end of the elastic element abuts against the end of the movable seat that extends into the positioning hole.
10. The passivation carrier for the stacked battery as described in any one of claims 2-9, characterized in that: The adjusting component includes a screw and a wing nut. One end of the screw is connected to the movable seat, and the other end of the screw extends out of the corresponding side plate. The wing nut is fitted onto the portion of the screw that extends out of the side plate.