Passivation boat and passivation apparatus

Abstract

The utility model provides a kind of passivation boat and passivation equipment, wherein passivation boat includes boat body, multiple partitions and at least one connecting assembly;The inside of boat body is hollow to form accommodating space, accommodating space is provided with multiple interval arrangement's sheet box loading passage, and at least one gas flow channel between adjacent two sheet box loading passages;Each partition is used to divide each sheet box loading passage into multiple sheet box placement area, each sheet box placement area has top open and side open, top open is used for battery sheet box to go in and out, and side open is used to make the passivation face of battery sheet in battery sheet box towards gas flow channel;Each connecting assembly is connected with adjacent two partitions and boat body, and it is jointly defined into gas flow channel;The utility model not only improves the sheet loading capacity of passivation boat, but also ensures the accuracy and stability of battery sheet box placement.

Description

Technical Field

[0001] This utility model belongs to the field of solar cell manufacturing technology, and more specifically, it relates to a passivation boat and passivation equipment. Background Technology

[0002] In the photovoltaic industry, to reduce production costs, the size of solar cells is constantly increasing. However, large-size cells suffer from problems such as excessive heat loss, susceptibility to hot spot effects, and limitations on module size and packaging. Cutting the cells can effectively reduce resistance loss and improve module reliability. The industry typically uses lasers to cut the cells, but this causes mechanical and thermal damage to the cut surfaces, necessitating passivation. Generally, the cut cells are placed in a boat and passivated using ALD or PECVD processes. Therefore, improving the passivation boat's carrying capacity and enhancing process stability are crucial.

[0003] In existing technologies, two rows of closely adjacent cell boxes are typically arranged inside the vessel, while the space inside the vessel not occupied by the cell boxes is designed as a gas flow channel. Although this layout can accommodate more cell boxes, its stability is often poor. Utility Model Content

[0004] The present invention aims to provide a passivation boat and passivation equipment to solve the problem of poor stability of multiple battery cell boxes placed in the passivation boat in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model first proposes a passivation boat, comprising:

[0007] The hull has a hollow interior forming a accommodating space, which is provided with multiple spaced-apart cartridge loading channels and at least one gas flow channel located between two adjacent cartridge loading channels.

[0008] Multiple sets of separators, each set of separators is used to divide each cell loading channel into multiple cell placement areas. Each cell placement area has a top opening and a side opening. The top opening is used for cell entry and exit, and the side opening is used to allow the passivation surface of the cell inside the cell to face the gas flow channel.

[0009] At least one connecting component, each connecting component being connected to two adjacent sets of separators and the hull, and together defining a gas flow path.

[0010] Furthermore, each cell holder placement area is provided with a cell holder positioning element for engaging with the positioning slot of the battery cell holder.

[0011] Furthermore, the hull is equipped with multiple stacking boat positioning components for stacking with other passivated boats.

[0012] Furthermore, the hull is provided with multiple first weight-reducing grooves and / or each partition is provided with a weight-reducing through hole.

[0013] Furthermore, the hull is provided with multiple boat-taking positioning components for cooperating with the take-up and put-down device and / or multiple support positioning components for cooperating with the transport device.

[0014] Furthermore, the hull includes a bottom plate, two end plates, and two side plates that together form an accommodating space, one of the end plates being provided with at least one air inlet communicating with a gas flow channel.

[0015] Furthermore, each connecting component consists of two crossbeams, each crossbeam is connected to two end plates at both ends, and each crossbeam body is connected to two adjacent sets of separators.

[0016] Furthermore, each connecting component includes two horizontal plates, each horizontal plate is connected to two end plates at both ends, each horizontal plate is connected to two adjacent sets of separators on both sides, and each horizontal plate is provided with multiple second weight-reducing grooves.

[0017] Furthermore, each connecting assembly also includes a flow channel baffle connected between two transverse plates and used to divide the gas flow channel into two branch channels. One end plate is provided with an intake baffle for dividing the air inlet into two sub-inlets, and the two sub-inlets are connected to the two branch channels respectively.

[0018] This utility model also proposes a passivation device, including a reactor, a passivation boat as described above located inside the reactor, and a plurality of cell boxes, each cell box being placed in a cell box placement area, and the cell in each cell box having a passivation surface facing the gas flow channel.

[0019] Compared with existing technologies, the beneficial effects of the passivation boat and passivation equipment proposed in this invention are as follows: This invention divides each cell cassette loading channel into multiple independent cell cassette placement areas by using each set of separators, thereby confining each cell cassette within an independent space and effectively reducing the risk of mutual compression or displacement between adjacent cell cassettes. Simultaneously, each connecting component connects two adjacent sets of separators to the boat body, defining gas flow channels and further enhancing the overall stability of the passivation boat. Therefore, this invention not only improves the cell loading capacity of the passivation boat but also ensures the accuracy and stability of cell cassette placement. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the battery cell box being placed into the passivation boat in Embodiment 1 of this utility model;

[0022] Figure 2 This is a cross-sectional view of the battery cell box after it has been placed into the passivation boat in Embodiment 1 of this utility model;

[0023] Figure 3 This is a three-dimensional schematic diagram of the passivation boat in Embodiment 1 of this utility model;

[0024] Figure 4 This is a schematic diagram of the passivation boats stacked with battery cell boxes in Embodiment 1 of this utility model;

[0025] Figure 5 This is a three-dimensional schematic diagram of the passivation boat in Embodiment 2 of this utility model;

[0026] Figure 6 This is a three-dimensional schematic diagram of the passivation boat in Embodiment 3 of this utility model;

[0027] The main markings in the attached figures are as follows:

[0028] 100. Passivation boat; 200. Battery cell box;

[0029] 11. Hull; 12. Divider; 14. Cell tray placement area; 15. Gas flow channel; 21. Cell; 22. Surface to be passivated; 23. Positioning groove;

[0030] 111. Base plate; 112. End plate; 113. Side plate; 114. Air inlet; 115. Plate holder positioning component; 116. First weight reduction groove; 117. Boat removal positioning component; 118. Support positioning component; 119. Stacking boat positioning assembly; 1101. Air intake adjustment reserved component; 1102. Sub-air inlet; 1103. Air intake partition; 1191. Stacking boat positioning protrusion; 1192. Stacking boat positioning recess;

[0031] 121. Weight reduction through hole; 130. Crossbeam; 131. Cross plate; 132. Second weight reduction groove; 133. Flow channel baffle; 151. Flow channel. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] Example 1

[0034] Please refer to the following: Figures 1 to 3 The passivation boat 100 proposed in this embodiment includes:

[0035] The boat body 11 has a hollow interior forming a accommodating space. The accommodating space is provided with multiple spaced-apart cartridge loading channels and at least one gas flow channel 15 located between two adjacent cartridge loading channels.

[0036] Multiple sets of separators 12, each set of separators 12 is used to divide each cassette loading channel into multiple cassette placement areas 14, each cassette placement area 14 has a top opening and a side opening, the top opening is used for the battery cassette 200 to enter and exit, and the side opening is used to allow the passivation surface 22 of the battery cell 21 inside the battery cassette 200 to face the gas flow channel 15.

[0037] At least one connecting component, each connecting component being connected to two adjacent sets of separators 12 and boat 11, and together defining a gas flow channel 15.

[0038] In this passivation boat 100, each set of separators 12 divides each cell cassette loading channel into multiple independent cell cassette placement areas 14, thereby confining each cell cassette 200 within an independent space and effectively reducing the risk of mutual compression or displacement between adjacent cell cassettes 200. Simultaneously, each connecting assembly connects two adjacent sets of separators 12 to the boat body 11, defining the gas flow channel 15 and further enhancing the overall stability of the passivation boat 100. Therefore, this invention not only improves the cell loading capacity of the passivation boat 100 but also ensures the accuracy and stability of cell cassette placement.

[0039] It should be noted that the number of cassette loading channels and gas flow channels 15 within the hull 11 can be flexibly adjusted according to actual needs. For ease of understanding, this embodiment will be described in detail using an example where the hull 11 has three cassette loading channels and two gas flow channels 15.

[0040] In this embodiment, as Figure 3As shown, the passivation boat 100 includes a boat body 11, three sets of partitions 12, and two connecting assemblies. The boat body 11 includes a bottom plate 111, two end plates 112, and two side plates 113 that together enclose a receiving space. One end plate 112 has two air inlets 114. The three sets of partitions 12 are respectively placed in three cassette loading channels. Each set of partitions 12 consists of five partitions 12, dividing each cassette loading channel into six cassette placement areas 14, with each cassette placement area 14 having a top opening and a side opening. The two connecting assemblies connect the three sets of partitions 12 to the boat body 11 and together define two gas flow channels 15, each gas flow channel 15 corresponding to each air inlet 114. Meanwhile, each connecting assembly consists of two crossbeams 130, an upper beam and a lower beam. Each crossbeam 130 is detachably connected to two end plates 112 at both ends by fasteners (such as screws), and the body of each crossbeam 130 is detachably connected to two adjacent sets of separators 12 by fasteners (such as screws). This design not only enables the passivation boat 100 to carry a large number of cells, but also ensures that each cell box 200 is stably placed within the passivation boat 100. In addition, process gas flows through three cell box loading channels via two gas channels 15, ensuring that the cells 21 in each cell box 200 can fully contact the process gas, thereby guaranteeing the passivation effect.

[0041] like Figure 1 , Figure 3 As shown, each cell box placement area 14 is provided with a cell box positioning component 115, which is used to cooperate with the positioning groove 23 of the battery cell box 200, thereby further ensuring that the battery cell box 200 is placed more accurately and stably in the passivation boat 100.

[0042] like Figure 3 As shown, the boat body 11 is provided with multiple first weight-reducing grooves 116, which are mainly distributed on the bottom plate 111 and the two side plates 113. The shape and size of the first weight-reducing grooves 116 can vary and are not specifically limited here. By providing non-through first weight-reducing grooves 116 on the boat body 11, not only is the weight effectively reduced, but the overall sealing is also ensured. In this way, while ensuring structural stability, the problem of process gas waste caused by the hollow design is avoided, thereby reducing gas consumption and improving passivation efficiency. In addition, each partition 12 is provided with a weight-reducing through hole 121. The shape and size of the weight-reducing through hole 121 can vary and are not specifically limited here. By providing weight-reducing through holes 121 on the partition 12, the overall weight of the passivation boat 100 is effectively reduced while ensuring the stability of the passivation sheet box placement.

[0043] like Figure 3As shown, the boat hull 11 is equipped with multiple boat-retrieving positioning components 117, multiple support positioning components 118, and multiple boat-stacking positioning assemblies 119. The boat-retrieving positioning components 117 cooperate with the pick-and-place device to perform the pick-and-place operation of the passivation boat 100; the support positioning components 118 cooperate with the transport device to ensure that the passivation boat 100 is securely fixed on the boat transport mechanism; the boat-stacking positioning assembly 119 consists of a boat-stacking positioning protrusion 1191 and a boat-stacking positioning concave block 1192, and is used to stack with other passivation boats 100, thereby enabling multiple passivation boats 100 to undergo passivation processes simultaneously, improving production efficiency. These positioning components with different functions are mainly distributed on two side plates 113, which are machined from a single piece of aluminum plate and are used to install the boat-retrieving positioning components 117, support positioning components 118, and boat-stacking positioning assemblies 119.

[0044] Please refer to the following: Figures 1 to 4 The passivation equipment proposed in this utility model mainly consists of a reactor, a passivation boat 100 located inside the reactor, and multiple battery cell boxes 200. The specific structure of the passivation boat 100 has been described in detail above and will not be repeated here.

[0045] like Figure 2 , Figure 3 As shown, the passivation boat 100 includes three cassette loading channels and two gas flow channels 15. Each cassette loading channel is further subdivided into six cassette placement areas 14. Battery cassettes 200 are placed from top to bottom within the cassette placement areas 14, with the passivation-to-be-passivated surfaces 22 of the battery cells 21 within the cassettes 200 facing the gas flow channels 15. Furthermore, the positioning grooves 23 on the battery cassettes 200 cooperate with the cassette positioning elements 115 within the cassette placement areas 14 to ensure the accuracy and stability of the placement of the battery cassettes 200. See also... Figure 3 , Figure 4 After all the cell boxes 200 are placed in all the cell box placement areas 14 within a single passivation boat 100, the two passivation boats 100 are stacked vertically. During the stacking process, the stacking boat positioning component 119 ensures the accuracy and stability of the stacking.

[0046] Example 2

[0047] like Figure 3 , Figure 5 As shown, the main difference between this embodiment and Embodiment 1 lies in the different connecting components.

[0048] It should be noted that the number of cassette loading channels and gas flow channels 15 within the hull 11 can be flexibly adjusted according to actual needs. For ease of understanding, this embodiment will be described in detail using an example where the hull 11 has two cassette loading channels and one gas flow channel 15.

[0049] In this embodiment, as Figure 5As shown, the passivation boat 100 includes a boat body 11, two sets of partitions 12, and a connecting assembly. The boat body 11 includes a bottom plate 111, two end plates 112, and two side plates 113 that together enclose a receiving space. One end plate 112 has an air inlet 114. The two sets of partitions 12 are respectively placed in two cassette loading channels. Each set of partitions 12 consists of five partitions 12, dividing each cassette loading channel into six cassette placement areas 14, with each cassette placement area 14 having a top opening and a side opening. The connecting assembly connects the two sets of partitions 12 to the boat body 11 and together defines a gas flow channel 15, which communicates with the air inlet 114. Meanwhile, each connecting assembly includes two horizontal plates 131, an upper horizontal plate and a lower horizontal plate. Each horizontal plate 131 is detachably connected to two end plates 112 at both ends by fasteners (such as screws), and each horizontal plate 131 is detachably connected to two adjacent sets of separators 12 on both sides by fasteners (such as screws). This design not only enables the passivation boat 100 to carry a large number of cells, but also ensures that each cell box 200 is stably placed within the passivation boat 100. In addition, process gas flows through the gas flow channel 15 through the two cell box loading channels, ensuring that the cells 21 in each cell box 200 can fully contact the process gas, thereby ensuring the passivation effect.

[0050] In addition, each horizontal plate 131 is provided with multiple second weight-reduction grooves 132. The shape and size of the second weight-reduction grooves 132 can vary and are not specifically limited here. By providing non-through second weight-reduction grooves 132 on the horizontal plate 131, not only is the weight effectively reduced, but the overall sealing performance is also ensured. Thus, when the connecting assembly includes two horizontal plates 131, the sealing performance of the gas flow channel 15 can be improved, allowing the process gas to be more concentrated in the gas flow channel 15 to achieve the passivation coating of the passivation surface 22 of the battery cell 21, avoiding the problem of process gas dissipating to other places and causing waste.

[0051] In addition, such as Figure 5 As shown, the end plate 112 with the air inlet 114 is also provided with two air inlet adjustment reserved parts 1101, so as to facilitate the subsequent addition of other plates and thus flexibly adjust the size of the air inlet 114.

[0052] Example 3

[0053] like Figure 5 , Figure 6As shown, the main difference between this embodiment and embodiment two is that the connecting assembly also includes a flow channel baffle 133. The flow channel baffle 133 is connected between the two horizontal plates 131 and is used to divide the gas flow channel 15 into two branch channels 151. An air inlet baffle 1103 is also provided on the end plate 112 with the air inlet 114, which is used to divide the air inlet 114 into two sub-air inlets 1102. The two sub-air inlets 1102 are correspondingly connected to the two branch channels 151.

[0054] In practical applications, the two intake adjustment pre-installed parts 1101 must first be removed. Next, the flow channel baffle 133 is inserted into the gas flow channel 15 from the side of the end plate 112 with the intake port 114. Subsequently, the flow channel baffle 133 is connected to the end plate 112 via the intake baffle 1103, thereby dividing the gas flow channel 15 into two branch channels 151, and simultaneously dividing the intake port 114 into two sub-intake ports 1102. For example... Figure 6 As shown, the dimensions of the two sub-intake ports 1102 can be adjusted by replacing the intake baffles 1103 of different specifications. Furthermore, the dimensions of the two flow channels 151 can also be adjusted by replacing the flow channel baffles 133 of different specifications. This adjustable process gas channel design can flexibly adapt to the needs of the passivation process.

[0055] The passivation boat and passivation equipment proposed in this invention have a large-capacity wafer carrying capacity, fully meeting the industry's high standards for battery process efficiency. Simultaneously, by setting up a wafer cassette placement area, each wafer cassette is confined to an independent space, and wafer cassette positioning components are configured within this area, ensuring the accuracy and stability of wafer cassette placement. Furthermore, the passivation boat's structural design is flexible and versatile; the size of the gas flow channel can be adjusted by simply replacing a few parts. Specifically, the size of the gas flow channel can be adjusted according to the number of wafers loaded in the passivation boat and the required process gas, effectively avoiding insufficient gas intake that could affect the uniformity of the wafer coating. The gas flow channel can be gradually replaced from a large channel to a smaller channel, ensuring coating effect while conserving process gas usage. In addition, the entire boat adopts a side-free perforation design, further preventing process gas leakage and effectively controlling gas consumption, thereby achieving cost reduction.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A passivated boat, characterized in that, include: The hull has a hollow interior forming a receiving space, which is provided with multiple spaced-apart cartridge loading channels and at least one gas flow channel located between two adjacent cartridge loading channels. Multiple sets of separators, each set of separators is used to divide each cell loading channel into multiple cell placement areas, each cell placement area has a top opening and a side opening, the top opening is used for cell entry and exit, and the side opening is used to make the passivation surface of the cell inside the cell face the gas flow channel. At least one connecting component, each connecting component being connected to two adjacent sets of separators and the hull, and together defining the gas flow path.

2. The passivation boat as described in claim 1, characterized in that, Each cell holder area is equipped with a cell holder positioning component for engaging with the positioning slot of the battery cell holder.

3. The passivation boat as described in claim 1, characterized in that, The hull is equipped with multiple stacking boat positioning components for stacking with other passivated boats.

4. The passivation boat as described in claim 1, characterized in that, The hull is provided with multiple first weight-reducing grooves and / or each partition is provided with a weight-reducing through hole.

5. The passivation boat as described in claim 1, characterized in that, The hull is provided with a plurality of boat-picking positioning components for cooperating with the pick-up and place device and / or a plurality of support positioning components for cooperating with the transport device.

6. The passivation boat according to any one of claims 1-5, characterized in that, The hull includes a bottom plate, two end plates, and two side plates that together form the accommodating space, wherein one end plate is provided with at least one air inlet communicating with the gas flow channel.

7. The passivation boat as described in claim 6, characterized in that, Each connecting assembly consists of two crossbeams, each crossbeam being connected to the two end plates at both ends, and each crossbeam body being connected to two adjacent sets of separators.

8. The passivation boat as described in claim 6, characterized in that, Each connecting component includes two horizontal plates, each horizontal plate is connected to the two end plates at both ends, and each horizontal plate is connected to two adjacent sets of separators on both sides. Each horizontal plate is provided with multiple second weight-reducing grooves.

9. The passivation boat as described in claim 8, characterized in that, Each connecting assembly also includes a flow channel baffle connected between the two cross plates and used to divide the gas flow channel into two branch channels. One of the end plates is provided with an intake baffle for dividing the air inlet into two sub-inlets, and the two sub-inlets are correspondingly connected to the two branch channels.

10. A passivation device, characterized in that, The device includes a reactor, a passivation boat as described in any one of claims 1-9 located within the reactor, and a plurality of cell boxes, each cell box being placed in a cell box placement area, and the cells in each cell box having a passivation surface facing the gas flow channel.

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