graphite boat

Abstract

The application relates to a graphite boat. The graphite boat comprises a boat body, a plurality of mounting plates and a clamping unit. The boat body has a placing cavity. All the mounting plates are arranged in the placing cavity and are arranged at intervals along the width direction of the boat body. One side of the mounting plate arranged along the width direction of the boat body is provided with a mounting area for mounting a battery piece. The clamping unit comprises a plurality of clamping protrusions. All the clamping protrusions of the clamping unit are arranged at intervals around the circumference of the mounting area. The clamping protrusion comprises a main body, a mounting portion and a limiting portion. The mounting portion protrudes from one side of the main body along the width direction of the boat body. The limiting portion is arranged on the mounting portion and cooperates with the main body and the mounting portion to jointly define a clamping opening which is in communication with the mounting area. In the direction from inside to outside of the mounting portion, the size of the limiting portion in the circumferential direction of the mounting portion gradually decreases. The graphite boat provided by the application can improve the electrical performance and the aesthetic appearance of the battery piece.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, specifically to a graphite boat. Background Technology

[0002] In the manufacturing process of solar cells, graphite boats are used to carry the cells to the coating process for coating.

[0003] In the traditional method, solar cells are fixed to a graphite boat using locking points. However, this method can easily lead to a thinner film layer, or even no film layer, formed at the locking points after the coating process. This results in large locking marks on the appearance of the solar cells, affecting their electrical performance and aesthetics. Utility Model Content

[0004] Therefore, it is necessary to provide a graphite boat that can improve the electrical performance and aesthetics of solar cells to address the above problems.

[0005] A graphite boat includes a boat body, multiple mounting plates, and a holding unit. The boat body has a placement cavity, and all the mounting plates are disposed in the placement cavity and spaced apart along the width direction of the boat body. One side of each mounting plate along the width direction of the boat body has a mounting area for mounting battery cells. The holding unit includes multiple holding protrusions, and all the holding protrusions of the holding unit are circumferentially spaced around the mounting area.

[0006] The retaining protrusion includes a main body, a mounting part, and a limiting part. The mounting part protrudes from one side of the main body along the width direction of the boat body. The limiting part is disposed on the mounting part and, together with the main body and the mounting part, defines a retaining opening that communicates with the mounting area. Furthermore, the dimension of the limiting part gradually decreases in the circumferential direction of the mounting part from the inside out.

[0007] In some embodiments, the mounting portions are two and protrude from opposite sides of the main body along the width direction of the boat body, and each mounting portion is provided with the limiting portion.

[0008] In some embodiments, the mounting portion is provided with a plurality of limiting portions, and all the limiting portions on the mounting portion are spaced apart along the circumferential direction of the mounting portion.

[0009] In some embodiments, the side of the limiting portion includes a first side, a second side, and a connecting surface. The first side and the second side are spaced apart circumferentially along the mounting portion. The connecting surface is disposed away from the mounting portion relative to the first side and the second side and intersects with both the first side and the second side. In the direction from the inside to the outside of the mounting portion, the distance between the first side and the second side gradually decreases.

[0010] In some embodiments, the first side and the second side are both inclined planar structures, and the connecting surface is an arc surface that is transitionally connected to the first side and the second side.

[0011] In some embodiments, the side of the limiting portion includes a first side and a second side, the first side and the second side are arranged circumferentially spaced along the mounting portion, and the first side and the second side intersect; in the direction from the inside to the outside of the mounting portion, the distance between the first side and the second side gradually decreases.

[0012] In some embodiments, the first side and the second side are both inclined planar structures; or, the first side and the second side are both arc-shaped structures, and the first side and the second side are smoothly connected.

[0013] In some embodiments, the limiting portion further includes a first end face and a second end face, the first end face and the second end face are spaced apart along the protrusion direction of the mounting portion and are both connected between the first side face and the second side face, and the first end face and the second end face are both planar structures.

[0014] In some embodiments, the holding unit includes three holding protrusions, wherein two of the holding protrusions are respectively disposed on two opposite sides of the mounting area along the length direction of the boat body, and the last holding protrusion is disposed on the bottom edge of the mounting area.

[0015] In some embodiments, the mounting plate is provided with an air inlet that extends through the mounting plate along the width direction of the hull and is located within the mounting area.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] The aforementioned graphite boat, through its design, features a gradually decreasing circumferential dimension of the limiting portion in the mounting section from the inside out. This design ensures the mounting strength between the limiting portion and the mounting section while reducing the obstruction effect of the limiting portion, thus minimizing the area of ​​the solar cell obstructed by the limiting portion. This allows for greater airflow contact with the solar cell, resulting in a larger contact area and reducing the likelihood of thinning or absence of the film layer in the obstructed area. Consequently, it also reduces subsequent jamming marks, effectively improving the electrical performance and aesthetics of the solar cell. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the graphite boat in one embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the mounting plate, the holding unit, and the two battery cells in one embodiment;

[0020] Figure 3 This is a schematic diagram of the structure of the retaining protrusion in one embodiment;

[0021] Figure 4 This is a schematic diagram of the holding protrusion in another embodiment;

[0022] Figure 5 This is a schematic diagram of the holding protrusion in another embodiment.

[0023] Icon labels:

[0024] 100. Graphite boat; 200. Battery cell;

[0025] 10. Hull; 20. Mounting plate; 30. Holding unit;

[0026] 11. Placement cavity; 12. First end plate; 13. Second end plate; 14. First side plate; 15. Second side plate;

[0027] 21. Installation area; 211. Side; 212. Bottom edge; 213. Top edge; 22. Air inlet;

[0028] 31. Holding protrusion; 311. Main body; 312. Mounting part; 313. Limiting part; 3131. First side; 3132. Second side; 3133. Connecting surface; 3134. First end face; 3135. Second end face; 314. Bayonet;

[0029] X represents the length of the boat; Y represents the width of the boat; Z represents the height of the boat. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application.

[0032] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] In the manufacturing process of solar cells, graphite boats are used to carry the cells to the coating process for coating.

[0037] In the traditional method, solar cells are fixed to a graphite boat using locking points. However, this method can easily lead to a thinner film layer, or even no film layer, formed at the locking points after the coating process. This results in large locking marks on the appearance of the solar cells, affecting their electrical performance and aesthetics.

[0038] Please see Figures 1 to 5 In view of the above, and in response to the aforementioned situation, the applicant, after in-depth research, designed a graphite boat 100. The graphite boat 100 includes a boat body 10, multiple mounting plates 20, and a holding unit 30. All mounting plates 20 are disposed within a placement cavity 11 and are spaced apart along the width direction Y of the boat body 10. One side of each mounting plate 20 along the width direction Y of the boat body 10 has a mounting area 21 for mounting battery cells 200. The holding unit 30 includes multiple holding protrusions 31, and all holding protrusions 31 of the holding unit 30... The mounting area 21 is circumferentially spaced apart; wherein, the retaining protrusion 31 includes a main body 311, a mounting part 312 and a limiting part 313. The mounting part 312 protrudes from one side of the main body 311 along the width direction Y of the boat body 10. The limiting part 313 is disposed on the mounting part 312 and together with the main body 311 and the mounting part 312, defines a retaining opening 314 that communicates with the mounting area 21. In the direction from the inside to the outside of the mounting part 312, the size of the limiting part 313 in the circumferential direction of the mounting part 312 gradually decreases.

[0039] As an example, the boat body 10 mainly serves a supporting and load-bearing function, and is generally made of plastic with high mechanical strength. The boat body 10 typically includes a first end plate 12, a second end plate 13, a first side plate 14, a second side plate 15, and multiple reinforcing rods. The first end plate 12 and the second end plate 13 are spaced apart along the length direction X of the boat body 10, and the first side plate 14 and the second side plate 15 are spaced apart along the width direction Y of the boat body 10. The first side plate 14 and the second side plate 15 are both connected between the first end plate 12 and the second end plate 13. All reinforcing rods are located at the bottom of the first side plate 14 and the second side plate 15 and are all connected between the first side plate 14 and the second side plate 15. The first end plate 12, the second end plate 13, the first side plate 14, the second side plate 15, and all reinforcing rods together form a placement cavity 11, and all reinforcing rods cooperate to support the mounting plate 20 and the battery cell 200.

[0040] There are multiple mounting plates 20, which are spaced apart along the width direction Y of the boat hull 10. The mounting plates 20 are located between the first side plate 14 and the second side plate 15, and are all connected to the first end plate 12 and the second end plate 13.

[0041] The mounting area 21 on one side of the mounting plate 20 is a plurality of such mounting areas, spaced apart along the length X of the hull 10. Each mounting area 21 is used to mount one battery cell 200. It can be understood that the mounting area 21 on the mounting plate 20 is the area covered by the battery cell 200 on the mounting plate 20 when the battery cell 200 is mounted on the mounting plate 20. The mounting area 21 extends approximately along the height Z of the hull 10.

[0042] Each holding unit 30 corresponds to a mounting area 21. Each holding unit 30 includes a plurality of holding protrusions 31. All holding protrusions 31 in the holding unit 30 are spaced apart along the circumference of the corresponding mounting area 21 and are used to hold the battery cell 200 installed in the corresponding mounting area 21.

[0043] Preferably, the holding unit 30 includes three holding protrusions 31. Two of the holding protrusions 31 are respectively disposed on the two opposite sides 211 of the mounting area 21 along the length X of the boat 10, and work together to hold the battery cell 200. The last holding protrusion 31 is disposed on the bottom edge 212 of the mounting area 21 and is used to support the battery cell 200, thereby fixing the battery cell 200. In actual operation, since the top edge 213 of the mounting area 21 is not blocked by the holding protrusions 31, the battery cell 200 can be inserted into the corresponding mounting area 21 from top to bottom during the installation process, and is held in place by the three holding protrusions 31, thereby fixing the battery cell 200. After the coating process is completed, the battery cell 200 can be pulled out from bottom to top to remove it. It can be seen that the setting of the position of the holding protrusions 31 in the holding unit 30 in this embodiment facilitates the loading and unloading of the battery cell 200.

[0044] Of course, the arrangement of the holding unit 30 is not limited to the one described above. For example, in some other embodiments, the holding unit 30 may also include five holding protrusions 31, wherein two holding protrusions 31 are respectively disposed on the two opposite sides 211 of the corresponding mounting area 21 along the length X of the boat body 10, the other two holding protrusions 31 are respectively disposed at the two corners at the bottom of the corresponding mounting area 21, and the last holding protrusion 31 is disposed on the bottom edge 212 of the corresponding mounting area 21. For example, in some other embodiments, the holding unit 30 may also include four holding protrusions 31, wherein two holding protrusions 31 are respectively disposed on the two opposite sides 211 of the corresponding mounting area 21 along the length X of the boat body 10, and the other two holding protrusions 31 are respectively disposed on the bottom edge 212 and top edge 213 of the corresponding mounting area 21 along the height Z of the boat body 10. In this embodiment, during the installation of the battery cell 200, the battery cell 200 is first lowered to a position aligned with the corresponding installation area 21, and then the battery cell 200 is installed into the corresponding installation area 21 by pressing the battery cell 200, and is secured by four retaining protrusions 31.

[0045] The retaining protrusion 31 includes a main body 311, a mounting part 312, and a limiting part 313. The surfaces of the main body 311 and the limiting part 313 facing each other, together with the side peripheral surface of the mounting part 312, define a retaining slot 314, in which the battery cell 200 is retained.

[0046] Preferably, there are two mounting portions 312 that protrude from opposite sides of the main body 311 along the width direction Y of the boat hull 10, and each mounting portion 312 is provided with a limiting portion 313. In this embodiment, one mounting portion 312 is fixedly connected to the mounting plate 20. The two mounting portions 312 are defined as a first mounting portion and a second mounting portion, respectively. The limiting portion 313 provided on the first mounting portion is the first limiting portion, and the limiting portion 313 provided on the second mounting portion is the second limiting portion. The main body 311, the first mounting portion, and the first limiting portion define a first latch, and the main body 311, the second mounting portion, and the second limiting portion define a second latch. In the width direction Y of the boat hull 10, one of the first latch and the second latch is closer to the mounting plate 20 than the other. Therefore, according to the actual coating requirements, the latch 314 holding the battery cell 200, such as the first latch or the second latch, is adjusted to change the distance between the battery cell 200 and the mounting plate 20, thereby achieving a better coating effect.

[0047] Taking the first bayonet slot as being closer to the mounting plate 20 than the second bayonet slot as an example, when the battery cell 200 is held in the first bayonet slot, the distance between the battery cell 200 and the mounting plate 20 is smaller; when the battery cell 200 is held in the second bayonet slot, the distance between the battery cell 200 and the mounting plate 20 is larger. Depending on the airflow rate during coating, the battery cell 200 can be held in either the first or second bayonet slot. For example, when the airflow rate is low, to facilitate sufficient contact between the battery cell 200 and the airflow to form a film, the battery cell 200 is adjusted to be held in the second bayonet slot, thereby increasing the distance between the battery cell 200 and the mounting plate 20, allowing the airflow to enter between the battery cell 200 and the mounting plate 20 and deposit on the battery cell 200. When the airflow is large, the airflow is more likely to enter the gap between the battery cell 200 and the mounting plate 20. At this time, the battery cell 200 can be adjusted to hold in the first slot. In this embodiment, although the gap between the battery cell 200 and the mounting plate 20 is small, the airflow is large enough, so it is easy to enter the gap between the battery cell 200 and the mounting plate 20 and deposit a film layer on the battery cell 200.

[0048] Of course, the mounting part 312 and the limiting part 313 are not limited to the one described above. In some other embodiments, the mounting part 312 and the limiting part 313 may also be provided only on the same side of the main body 311. In this embodiment, the main body 311 is fixedly connected to the mounting plate 20.

[0049] Preferably, both the main body 311 and the mounting part 312 are cylindrical structures. The cylindrical structure has a relatively smooth side circumferential surface, thereby reducing the risk of the battery cell 200 rubbing against the main body 311 and the mounting part 312 during the insertion or removal of the bayonet 314.

[0050] In the direction from the inside to the outside of the mounting portion 312, the dimension of the limiting portion 313 gradually decreases in the circumferential direction of the mounting portion 312. Taking the mounting portion 312 as a cylinder as an example, in the radial direction of the mounting portion 312 and from the inside to the outside, the dimension of the limiting portion 313 gradually decreases in the circumferential direction of the mounting portion 312. As an example, the limiting portion 313 can be in the shape of a triangular plate, a trapezoidal plate, a semi-circular plate, or a cone, and the specific shape can be set according to actual needs.

[0051] In the traditional graphite boat 100, the limiting part 313 is an annular plate and is continuously arranged around the mounting part 312. This design results in a large area of ​​the battery cell 200 being blocked by the limiting part 313 when the battery cell 200 is held in the slot 314. This leads to a thinner film layer in this area, or even no film layer at all, and a large sticking mark is formed in this area of ​​the battery cell 200, affecting the electrical performance and aesthetics of the battery cell 200.

[0052] In this application, by designing the limiting part 313 to gradually decrease in size circumferentially in the mounting part 312 from the inside out, the limiting part 313 ensures the installation strength between the limiting part 313 and the mounting part 312 while reducing the obstruction effect of the limiting part 313, thus reducing the area of ​​the battery cell 200 obstructed by the limiting part 313. This allows for sufficient contact between the airflow and the battery cell 200, with a large contact area, reducing the possibility of thinning or absence of the film layer in the area of ​​the battery cell 200 obstructed by the limiting part 313. Furthermore, it reduces the subsequent markings and effectively improves the electrical performance and aesthetics of the battery cell 200.

[0053] It is worth mentioning that when the battery cell 200 is held in the slot 314, it is not completely attached to the main body 311 and the limiting part 313. In fact, there are still some gaps between the battery cell 200 and the main body 311 and the limiting part 313. Airflow can flow into the gaps and deposit on the battery cell 200, thereby forming a battery cell 200 without any sticking marks or with small and faint sticking marks.

[0054] Please see Figures 3 to 5 In some embodiments, the mounting portion 312 is provided with a plurality of limiting portions 313, and all the limiting portions 313 on the mounting portion 312 are spaced apart along the circumference of the mounting portion 312. By providing a plurality of limiting portions 313 on the mounting portion 312, the limiting effect of the mounting angle of the holding protrusion 31 in the circumference of the mounting portion 312 is small during the process of installing the holding protrusion 31 on the mounting plate 20. That is, the holding protrusion 31 can be installed at any mounting angle, and there will be a notch 314 in the circumference of the mounting portion 312 that communicates with the mounting area 21 to facilitate the installation of the battery cell 200.

[0055] As can be seen, the mounting part 312 is provided with multiple limiting parts 313, so that when the retaining protrusion 31 is installed on the mounting plate 20, the installation angle of the retaining protrusion 31 is more flexible and the installation efficiency is higher.

[0056] In some embodiments, the side of the limiting portion 313 includes a first side surface 3131, a second side surface 3132, and a connecting surface 3133. The first side surface 3131 and the second side surface 3132 are spaced apart along the circumference of the mounting portion 312. The connecting surface 3133 is disposed away from the mounting portion 312 relative to the first side surface 3131 and the second side surface 3132, and intersects with both the first side surface 3131 and the second side surface 3132. In the direction from the inside to the outside of the mounting portion 312, the distance between the first side surface 3131 and the second side surface 3132 gradually decreases, thereby forming a structure in which the size of the limiting portion 313 gradually decreases in the circumferential direction of the mounting portion 312.

[0057] In this embodiment, the structure formed by the limiting part 313 can be a trapezoidal plate-like structure, specifically as follows: Figure 3 and Figure 4 As shown.

[0058] This embodiment can reduce the blocking effect of the limiting part 313, thereby reducing the area of ​​the battery cell 200 blocked by the limiting part 313. In this way, the airflow can fully contact the battery cell 200, reducing the possibility that the film thickness of the battery cell 200 in the blocked area will become thinner or that there will be no film layer. Of course, the subsequent jamming marks will also be reduced, effectively improving the electrical performance and aesthetics of the battery cell 200.

[0059] Furthermore, in some embodiments, both the first side surface 3131 and the second side surface 3132 are inclined planar structures, and the connecting surface 3133 is an arc surface (specifically as shown in the figure). Figure 3 As shown), and is transitionally connected to the first side 3131 and the second side 3132. This embodiment can reduce the number of marks and avoid the formation of sharp structures at the corners of the first side 3131 and the connecting surface 3133, and at the corners of the second side 3132 and the connecting surface 3133, thereby reducing the risk of scratches during the installation of the battery cell 200.

[0060] Of course, in some other embodiments, the connecting surface 3133 can also be a flat surface, specifically as follows: Figure 4 As shown.

[0061] like Figure 5As shown, in some embodiments, the side of the limiting part 313 includes a first side 3131 and a second side 3132. The first side 3131 and the second side 3132 are arranged at intervals along the circumference of the mounting part 312, and the first side 3131 and the second side 3132 intersect each other. In the direction from the inside to the outside of the mounting part 312, the distance between the first side 3131 and the second side 3132 gradually decreases.

[0062] In other words, in this embodiment, the side of the limiting part 313 does not have a connecting surface 3133.

[0063] In this embodiment, the structure formed by the limiting part 313 can be a structure similar to a triangular plate, a semi-circular plate, or a cone.

[0064] This embodiment can further reduce the blocking effect of the limiting part 313, so that the airflow can fully contact the battery cell 200, reducing the possibility that the film thickness of the battery cell 200 in the area blocked by the limiting part 313 becomes thinner or there is no film. Of course, the subsequent stuck marks are also reduced, effectively improving the electrical performance and aesthetics of the battery cell 200.

[0065] like Figure 1 , Figures 3 to 5 As shown, in some embodiments, both the first side surface 3131 and the second side surface 3132 are inclined planar structures, thereby making the limiting portion 313 form a triangular plate-like structure. Alternatively, both the first side surface 3131 and the second side surface 3132 are arc-shaped structures, and the first side surface 3131 and the second side surface 3132 are smoothly connected, thereby making the limiting portion 313 form a semi-circular plate-like structure.

[0066] This embodiment reduces the obstruction effect of the limiting part 313, effectively improving the electrical performance and aesthetics of the battery cell 200.

[0067] In some embodiments, the limiting portion 313 further includes a first end face 3134 and a second end face 3135. The first end face 3134 and the second end face 3135 are spaced apart along the protrusion direction of the mounting portion 312 and are both connected between the first side face 3131 and the second side face 3132. The first end face 3134 and the second end face 3135 are both planar structures.

[0068] Specifically, the first end face 3134 or the second end face 3135 of the limiting part 313 is disposed facing the main body 311. Taking the first end face 3134 of the limiting part 313 as being disposed facing the main body 311 as an example, the first end face 3134, the surface of the main body 311 facing the first end face 3134, and the side peripheral surface of the limiting part 313 together define and form the bayonet 314.

[0069] The first end face 3134 and the second end face 3135 are both planar structures and are set perpendicular to the width direction Y of the boat body 10. This allows the first end face 3134 or the second end face 3135 to have a better limiting effect on the battery cell 200 in the width direction Y of the boat body 10, making it easier to fix the battery cell 200.

[0070] like Figure 1 , Figures 3 to 5 As shown, in some embodiments, the projections of the mounting portion 312 and the limiting portion 313 in the width direction Y of the boat hull 10 are completely within the main body 311. In this way, it is equivalent to the mounting portion 312 and the limiting portion 313 being stably mounted on the same side of the main body 311 with the main body 311 as the mounting reference. This design improves the structural strength of the holding protrusion 31.

[0071] like Figure 1 and Figure 2 As shown, in some embodiments, the mounting plate 20 is provided with an air inlet 22, which extends through the mounting plate 20 along the width direction Y of the hull 10 and is located within the mounting area 21.

[0072] The air inlet 22 corresponds one-to-one with the installation area 21. In actual operation, the airflow in the placement cavity 11 can enter directly from top to bottom along the height direction Z of the boat body 10 into the gap between the battery cell 200 and the mounting plate 20, or it can enter from the air inlet 22 along the width direction Y of the boat body 10 into the gap between the battery cell 200 and the mounting plate 20, and deposit on the battery cell 200.

[0073] This design increases the airflow path, allowing the airflow to fully contact the battery cell 200, further improving the coating effect.

[0074] The aforementioned graphite boat 100, through its design, features a gradually decreasing dimension of the limiting part 313 in the circumferential direction of the mounting part 312 from the inside out. This design ensures the mounting strength between the limiting part 313 and the mounting part 312 while also reducing the obstruction effect of the limiting part 313, thus reducing the area of ​​the battery cell 200 obstructed by the limiting part 313. This allows for sufficient contact between the airflow and the battery cell 200, with a large contact area, reducing the possibility of thinning or absence of the film layer in the area obstructed by the limiting part 313. Furthermore, it reduces the formation of subsequent jamming marks, effectively improving the electrical performance and aesthetics of the battery cell 200.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A graphite boat, characterized in that, The graphite boat includes a boat body (10), multiple mounting plates (20) and a clamping unit (30). The boat body (10) has a placement cavity (11). All the mounting plates (20) are disposed in the placement cavity (11) and are spaced apart along the width direction (Y) of the boat body (10). One side of the mounting plate (20) along the width direction (Y) of the boat body (10) is provided with a mounting area (21) for mounting battery cells (200). The clamping unit (30) includes multiple clamping protrusions (31). All the clamping protrusions (31) of the clamping unit (30) are spaced apart around the mounting area (21) circumferentially. The holding protrusion (31) includes a main body (311), a mounting part (312), and a limiting part (313). The mounting part (312) protrudes from one side of the main body (311) along the width direction (Y) of the boat body (10). The limiting part (313) is disposed on the mounting part (312) and together with the main body (311) and the mounting part (312) define a slot (314) that communicates with the mounting area (21). In the direction from the inside to the outside of the mounting part (312), the size of the limiting part (313) gradually decreases in the circumferential direction of the mounting part (312).

2. The graphite boat according to claim 1, characterized in that, The mounting portion (312) consists of two parts that protrude from opposite sides of the main body (311) along the width direction (Y) of the boat body (10), and each mounting portion (312) is provided with the limiting portion (313).

3. The graphite boat according to claim 1, characterized in that, The mounting portion (312) is provided with a plurality of limiting portions (313), and all the limiting portions (313) on the mounting portion (312) are arranged at intervals along the circumference of the mounting portion (312).

4. The graphite boat according to claim 1, characterized in that, The side of the limiting part (313) includes a first side (3131), a second side (3132) and a connecting surface (3133). The first side (3131) and the second side (3132) are arranged at intervals along the circumference of the mounting part (312). The connecting surface (3133) is arranged away from the mounting part (312) from the first side (3131) and the second side (3132), and intersects with the first side (3131) and the second side (3132). In the direction from the inside to the outside of the mounting portion (312), the distance between the first side surface (3131) and the second side surface (3132) gradually decreases.

5. The graphite boat according to claim 4, characterized in that, The first side surface (3131) and the second side surface (3132) are both inclined planar structures, and the connecting surface (3133) is an arc surface, which is transitionally connected to the first side surface (3131) and the second side surface (3132).

6. The graphite boat according to claim 1, characterized in that, The side of the limiting part (313) includes a first side (3131) and a second side (3132), the first side (3131) and the second side (3132) are arranged at intervals along the circumference of the mounting part (312), and the first side (3131) and the second side (3132) intersect. In the direction from the inside to the outside of the mounting portion (312), the distance between the first side surface (3131) and the second side surface (3132) gradually decreases.

7. The graphite boat according to claim 6, characterized in that, The first side (3131) and the second side (3132) are both inclined planar structures; or, the first side (3131) and the second side (3132) are both arc-shaped structures, and the first side (3131) and the second side (3132) are smoothly connected.

8. The graphite boat according to any one of claims 4 to 7, characterized in that, The limiting part (313) further includes a first end face (3134) and a second end face (3135). The first end face (3134) and the second end face (3135) are spaced apart along the protrusion direction of the mounting part (312) and are both connected between the first side face (3131) and the second side face (3132). The first end face (3134) and the second end face (3135) are both planar structures.

9. The graphite boat according to claim 1, characterized in that, The holding unit (30) includes three holding protrusions (31), two of which are respectively disposed on the two sides (211) of the mounting area (21) opposite to each other along the length direction (X) of the boat body (10), and the last holding protrusion (31) is disposed on the bottom edge (212) of the mounting area (21).

10. The graphite boat according to claim 1, characterized in that, The mounting plate (20) is provided with an air inlet (22), which extends through the mounting plate (20) along the width direction (Y) of the boat body (10) and is located within the mounting area (21).

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