Packaging box for half battery pieces
By designing the buffer gasket avoiding corners of the battery half-piece packaging box, the problem of angle breakage during the battery half-piece transportation is solved, and the effect of reducing losses and costs is achieved.
Patent Information
- Application Number
- CN202422359255.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-26
AI Technical Summary
During the transportation of the battery half-piece, the corners at both ends of the cutting edges are prone to fragmentation, resulting in an increase in production costs.
A packaging box for half a battery is designed, including the box body and a buffer gasket. The buffer gasket is equipped with an avoidance area on the inner wall to avoid the corner of the half a battery. The battery half a battery is stabilized by buffering and limiting the position to avoid stress at the corners.
It effectively reduces the angle breakage rate during half-piece transportation of the battery, increases transportation losses, and reduces production costs.
Smart Images
Figure CN223149010U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, and more particularly, to a packaging box for a half-piece of a battery. Background Art
[0002] In the related art, photovoltaic cells are cut into half-cells by cutting methods such as laser-assisted non-destructive cutting, and corners are inevitably introduced at both ends of the cutting edge. The passivation of the cut cells is generally carried out in a constant-temperature clean room in the battery workshop, and the cut and passivated half-cells need to be transported from the battery workshop to the module workshop. During transportation, the corners are prone to chipping, resulting in loss of incoming materials and increased production costs. Summary of the Utility Model
[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. To this end, an object of the utility model is to provide a packaging box for a half-piece of a battery, which effectively improves the problem of corner chipping during the transportation of the half-piece of the battery.
[0004] According to an embodiment of the utility model, for the packaging box of the half-piece of the battery, the half-piece of the battery has a cutting edge formed by cutting and corners located at both ends of the cutting edge. The packaging box includes: a box body having a receiving cavity for receiving the half-piece of the battery; a buffer gasket disposed on the inner wall of the receiving cavity and used for buffering and limiting the half-piece of the battery. The buffer gasket has an avoidance area opposite to the corners of the half-piece of the battery to avoid the corners.
[0005] According to the embodiment of the utility model, for the packaging box of the half-piece of the battery, the buffer gasket buffers and limits the half-piece of the battery, so that the position of the half-piece of the battery in the receiving cavity is stable. And by setting an avoidance area on the buffer gasket to avoid the corners of the half-piece of the battery, the buffer gasket will not exert an external force on the corners of the half-piece of the battery during transportation, greatly reducing the chipping rate, improving the transportation loss of the half-piece of the battery, and reducing the production cost.
[0006] In addition, the packaging box of the half-piece of the battery according to the above embodiment of the utility model may further have the following additional technical features:
[0007] According to some embodiments of the utility model, the buffer gasket includes a first gasket disposed on one side in the thickness direction of the half-piece of the battery. The first gasket is a rectangular sheet. Wherein, in the direction parallel to the cutting edge of the half-piece of the battery, avoidance areas are respectively provided at both ends of the first gasket, and the two avoidance areas are respectively used to avoid the two corners corresponding to the cutting edge.
[0008] According to some embodiments of the present utility model, in a direction parallel to the cutting edge of the battery half piece, the size of the accommodating cavity is X, and the size of the first gasket is greater than X / 2 and less than X - 2A, where A is the lossy cutting length of the battery half piece.
[0009] According to some embodiments of the present utility model, the buffer gasket includes a first gasket disposed on one side in the thickness direction of the battery half piece. The first gasket is a rectangular sheet. Wherein, in a direction perpendicular to the cutting edge of the battery half piece, an avoidance area is provided at one end of the first gasket close to the cutting edge, and the avoidance area is used to avoid the two corner portions corresponding to the cutting edge.
[0010] According to some embodiments of the present utility model, in a direction perpendicular to the cutting edge of the battery half piece, the size of the accommodating cavity is Y, and the size of the first gasket is greater than Y / 2 and less than Y - A, where A is the lossy cutting length of the battery half piece.
[0011] According to some embodiments of the present utility model, the buffer gasket includes a first gasket disposed on one side in the thickness direction of the battery half piece. The first gasket has a first edge close to the cutting edge in a direction perpendicular to the cutting edge of the battery half piece, and chamfered corners are respectively provided at both ends of the first edge in the direction parallel to the cutting edge, and the chamfered corners form the avoidance area.
[0012] According to some embodiments of the present utility model, in a direction parallel to the cutting edge of the battery half piece, the size of the accommodating cavity is X, and the maximum size of the avoidance area of the first gasket is greater than A and less than X / 4, where A is the lossy cutting length of the battery half piece; and / or, in a direction perpendicular to the cutting edge of the battery half piece, the size of the accommodating cavity is Y, and the maximum size of the avoidance area of the first gasket is greater than A and less than Y / 2, where A is the lossy cutting length of the battery half piece.
[0013] According to some embodiments of the present utility model, the buffer gasket includes a side gasket disposed on one side perpendicular to the thickness direction of the battery half piece. In the thickness direction of the battery half piece, the size of the avoidance area of the side gasket is equal to the size of the side gasket.
[0014] According to some embodiments of the present utility model, the side gasket includes two second gaskets, a third gasket, and a fourth gasket. The two second gaskets are respectively disposed on both sides of the battery half piece in the direction parallel to the cutting edge. In the direction perpendicular to the cutting edge, the third gasket and the fourth gasket are respectively disposed on one side close to the cutting edge and one side far from the cutting edge. The size of the accommodation cavity parallel to the cutting edge is X, and the size perpendicular to the cutting edge is Y. The size of the box body parallel to the cutting edge is L1. Wherein, in the direction perpendicular to the cutting edge, an avoidance area is provided at one end of the second gasket close to the cutting edge. The size of the second gasket is greater than Y / 2 and less than Y - A; in the direction parallel to the cutting edge, avoidance areas are respectively provided at both ends of the third gasket. The size of the third gasket is greater than X / 2 and less than X - 2A. The fourth gasket is not provided with an avoidance area, and the size of the fourth gasket is greater than X and less than L1, where A is the lossy cutting length of the battery half piece.
[0015] According to some embodiments of the present utility model, the buffer gasket is made of EPE or sponge material.
[0016] Some additional aspects and advantages of the present utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:
[0018] Figure 1 is an unfolded view of a packaging box according to some embodiments of the present utility model, wherein the first direction and the second direction are based on the orientation of the battery half piece;
[0019] Figure 2 is a schematic diagram of a packaging box and a battery half piece according to some embodiments of the present utility model;
[0020] Figure 3 is a schematic diagram of a packaging box and a battery half piece according to some other embodiments of the present utility model;
[0021] Figure 4 is a schematic diagram of a packaging box and a battery half piece according to some other embodiments of the present utility model.
[0022] REFERENCE SIGNS:
[0023] Packaging box 100; Battery half piece 200; Cutting edge 210; Corner 220;
[0024] Box body 10; jack 101; first box wall 11; second box wall 12; third box wall 13; insertion piece 14;
[0025] Buffer gasket 20; avoidance area 201; first gasket 21; second gasket 22; third gasket 23; fourth gasket 24;
[0026] First direction F1; second direction F2. Specific embodiments
[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.
[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0029] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. The meaning of "multiple" is two or more. The first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. The first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature.
[0030] Photovoltaic modules are important devices that utilize the photovoltaic effect to convert solar energy into electrical energy. In today's society, the contradiction between the environment and energy is becoming increasingly prominent. Among all new energy sources, solar energy has the characteristics of large reserves, renewable, and environmentally friendly, making photovoltaic power generation an important new energy development direction.
[0031] The photovoltaic module includes photovoltaic cells that can generate photovoltaic energy and convert light energy into electrical energy. The photovoltaic cells may include a series of cell wafers. To increase the power of the cell series, in some related technologies, a whole cell wafer is cut into two, three, or more parts.
[0032] However, after the whole cell wafer is cut, there are dangling bonds at the cut edge (or cut surface), which causes increased recombination, affects the voltage, leads to efficiency loss, and reduces the performance of the photovoltaic module. Therefore, in some related technologies, the cut edge is passivated, such as depositing AlOx on the cut edge using ALD technology to reduce edge recombination.
[0033] Before the cut-edge passivation technology was introduced, the cutting and welding of cell wafers were carried out at the module end of the production line. The cutting and welding were integrated, and there was no need to go through the transportation process. After the introduction of the cut-edge passivation technology, the cell wafer cutting process needs to be carried out at the cell end, and passivation is completed at the cell end. Then, the passivated half-cell is transported to the module end for welding and assembly.
[0034] The cutting process of the half-cell can include lossy cutting and non-lossy cutting. Among them, lossy cutting refers to cutting through the cell wafer using high-power laser, and non-lossy cutting refers to using pulsed low-power laser in combination with cold water spraying. Utilizing the principle of alternating heat and cold and thermal expansion and contraction, the thermal stress of the cell wafer is released and it automatically cracks. When cutting, lossy cutting can be carried out in the areas near both ends of the cut edge, and the cutting length can be less than or equal to 10 mm. Then, non-lossy cutting is carried out in other areas to complete the cutting of the cell wafer.
[0035] However, after the cell wafer is cut, corners, such as right angles, will be introduced at both ends of the cut edge of the half-cell. During transportation, the corners are prone to chipping, especially the lossy cutting positions are more likely to break, resulting in a high loss at the module end and increasing the production cost.
[0036] Based on this, the present application proposes a packaging box 100 for a half-cell 200, which can greatly reduce the chipping of the corners 220 of the half-cell 200, effectively reduce the damage of raw materials during transportation, and thus reduce the cost.
[0037] It should be noted that the half-cell 200 here does not refer to exactly half of the cell wafer. It can also be one of the parts formed after being divided into three, four, or more parts, collectively referred to as the half-cell 200. The number of cut edges 210 of the half-cell 200 is different depending on the number of parts divided. For example, the half-cell 200 obtained after being divided into two has one cut edge 210, and the half-cell 200 obtained after being divided into three has one or two cut edges 210, etc. The packaging box 100 can be used for transporting the half-cell 200 from the cell end to the module end, or for transportation on other paths. The present application does not make special restrictions on this.
[0038] The packaging box 100 for the battery half piece 200 according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.
[0039] Referring to Figure 1 and Figure 2 as shown, the battery half piece 200 has a cutting edge 210 formed by cutting and corner portions 220 located at both ends of the cutting edge 210. The battery half piece 200 is generally a sheet body with a certain thickness. The surfaces on both sides of the sheet body in the thickness direction are the largest area surfaces. The cutting edge 210 can also be referred to as a cutting surface. The two ends of the cutting edge 210 refer to the connection corner regions where the cutting edge 210 is connected to the non-largest area surface in the direction perpendicular to the thickness direction of the battery half piece 200. For example, Figure 2 in [the figure], there are right-angle corner portions 220 at both ends of the cutting edge 210 along the first direction F1.
[0040] The packaging box 100 for the battery half piece 200 according to an embodiment of the present utility model may include: a box body 10 and a buffer gasket 20.
[0041] Specifically, the box body 10 has a receiving cavity for receiving the battery half piece 200. The buffer gasket 20 is disposed on the inner wall of the receiving cavity and is used for buffering and limiting the battery half piece 200. The buffer gasket 20 has an avoidance area 201, and the avoidance area 201 is opposite to the corner portion 220 of the battery half piece 200 to avoid the corner portion 220.
[0042] The unfolded structure of the box body 10 may be, but is not limited to, Figure 1 as shown. It only needs that different box walls of the box body 10 can be spliced and connected to define the receiving cavity. Moreover, the shape of the box body 10 can be flexibly set according to the shape of the battery half piece 200 to be received. For example, it can be Figure 1 shown as a rectangular parallelepiped box, or can also be in the shapes of a cylinder, a cube, etc.
[0043] Taking Figure 1 as an example, the box body 10 includes six box walls, namely two first box walls 11, two second box walls 12, and two third box walls 13. After splicing, the two first box walls 11 are opposite to each other in the thickness direction of the battery half piece 200, the two second box walls 12 are opposite to each other along the first direction F1, and the two third box walls 13 are opposite to each other along the third direction. The first direction F1, the second direction F2, and the thickness direction of the battery half piece 200 are perpendicular to each other in pairs. Among them, buffer gaskets 20 are attached to the front surfaces of the first box wall 11 and the third box wall 13 so that the buffer gaskets 20 are located on the inner wall of the receiving cavity after splicing; the second box wall 12 can be obtained by laminating two side walls and inserting and limiting through an inserting piece 14 and a jack 101. Among the two side walls, buffer gaskets 20 are attached to the reverse surfaces of the side walls that are not directly connected to the first box wall 11 or the third box wall 13 so that the buffer gaskets 20 are located on the inner wall of the receiving cavity after splicing.
[0044] Of course, the buffer gasket 20 can be provided on the six box walls of the box body 10, or on some of the box walls. The specific installation position is set according to the buffer requirements. Among them, in the embodiment where the buffer gasket 20 is provided on all six box walls, the battery half piece 200 can be buffered and protected in all directions, improving the integrity of the battery half piece 200 during transportation.
[0045] One or more battery half pieces 200 can be accommodated in the accommodation cavity. For example, Figure 2 As shown, multiple battery half pieces 200 can be stacked in the thickness direction in the accommodation cavity to improve the transportation capacity of the packaging box 100 and improve the transportation efficiency. Among them, the cutting edges 210 of the multiple stacked battery half pieces 200 can be aligned for placement to simplify the arrangement of the buffer gasket 20 and the subsequent application of the battery half piece 200. In the embodiment where the cutting edges 210 of the multiple battery half pieces 200 are not aligned, the arrangement of the buffer gasket 20 needs to be set in combination with the orientation of the cutting edges 210 of the multiple battery half pieces 200. Hereinafter, the case where the cutting edges 210 of the multiple battery half pieces 200 are aligned is taken as an example for description. According to the following description, in the embodiment where the cutting edges 210 of the multiple battery half pieces 200 are not aligned, the arrangement of the buffer gasket 20 is understandable to those skilled in the art.
[0046] The buffer gasket 20 can be provided on the inner wall of the accommodation cavity by means of pasting or the like. The buffer gasket 20 is used to buffer and limit the battery half piece 200. For example, the buffer gasket 20 can undergo elastic deformation, so as to contact and press against the battery half piece 200, realizing reliable anti-vibration fixation of the battery half piece 200. For example, the buffer gasket 20 can be made of materials such as EPE or sponge. EPE and sponge have good buffer effects, low prices, and are not easy to cause wear to the battery half piece 200.
[0047] The avoidance area 201 avoids the corner 220, which means that the buffer gasket 20 does not contact the corner 220 of the battery half piece 200.
[0048] For example, the avoidance area 201 can be a thinning area of the buffer gasket 20. In the thinning area, the thickness of the buffer gasket 20 is less than the thickness of other non-thinning areas, so that the non-thinning areas of the buffer gasket 20 can be opposite to and contact the non-corner 220 areas of the battery half piece 200 and realize buffer limitation of the battery half piece 200, while the thinning area is opposite to the corner 220 but does not contact, so as to prevent the corner 220 from being broken due to the shaking of the battery half piece 200 relative to the buffer gasket 20 during transportation.
[0049] For another example, the avoidance area 201 may be a hollowed-out area of the buffer gasket 20. The hollowed-out area penetrates the buffer gasket 20 along the thickness direction of the buffer gasket 20. In the direction perpendicular to the thickness direction of the buffer gasket 20, the hollowed-out area may be provided in the middle or at the end of the buffer gasket 20, as long as the hollowed-out area can be opposite to the corner 220 of the battery half piece 200 so that the buffer gasket 20 does not contact the corner 220.
[0050] For the packaging box 100 of the battery half piece 200 according to the embodiment of the present invention, the buffer gasket 20 buffers and positions the battery half piece 200, so that the position of the battery half piece 200 in the accommodation cavity is stable. And by providing the avoidance area 201 on the buffer gasket 20 to avoid the corner 220 of the battery half piece 200, the buffer gasket 20 will not exert an external force on the corner 220 of the battery half piece 200 during transportation, greatly reducing the corner breakage rate, improving the transportation loss of the battery half piece 200, and reducing the production cost.
[0051] The buffer gasket 20 according to some embodiments of the present invention will be described below with reference to the accompanying drawings.
[0052] According to some embodiments of the present invention, as Figure 1 and Figure 2 shown, the buffer gasket 20 includes a first gasket 21 provided on one side of the battery half piece 200 in the thickness direction. The first gasket 21 is a rectangular sheet. Among them, in the direction parallel to the cutting edge 210 of the battery half piece 200, avoidance areas 201 are respectively provided at both ends of the first gasket 21, and the two avoidance areas 201 are respectively used to avoid the two corners 220 corresponding to the cutting edge 210.
[0053] Among them, the first box wall 11 of the box body 10 is rectangular and has a first side parallel or substantially parallel to the cutting edge 210 of the battery half piece 200 and a second side perpendicular or substantially perpendicular to the cutting edge 210 of the battery half piece 200. Considering that there may be errors in the placement position of the battery half piece 200 in the accommodation cavity, therefore, the direction parallel to the cutting edge 210 of the battery half piece 200 can be understood as the direction parallel to the first side of the first box wall 11 of the box body 10, as Figure 2 shown in the first direction F1.
[0054] The first gasket 21 is provided on one side of the battery half piece 200 in the thickness direction, so that the surface of the first gasket 21 facing the battery half piece 200 is perpendicular to the cutting edge 210. In the direction parallel to the cutting edge 210, both ends of the first gasket 21 are respectively opposite to the two corners 220. By providing the avoidance areas 201 at both ends of the first gasket 21, the corners 220 can be effectively avoided, the risk of corner 220 breakage is reduced, and it is also beneficial to simplify the structure of the first gasket 21.
[0055] It should be noted that, in the above embodiments, the first gasket 21 is a rectangular sheet. Therefore, the avoidance area 201 refers to that, compared with the rectangular sheet in the non-avoidance area 201, the size of the first gasket 21 in the first direction F1 is shortened to form the avoidance area 201 at both ends.
[0056] In some embodiments, continuing to refer to Figure 1 and Figure 2 As shown, in the direction parallel to the cutting edge 210 of the battery half-piece 200, in the first direction F1 as shown in Figure 2 the size of the accommodation cavity is X, and the size of the first gasket 21 is greater than X / 2 and less than X - 2A, where A is the lossy cutting length of the battery half-piece 200.
[0057] Among them, the size X of the accommodation cavity can be the difference between the size L1 of the first box wall 11 in the first direction F1 and the thicknesses of the two second box walls 12. For example, X is L1 - 16 mm.
[0058] For the battery half-piece 200, the lossy cutting position is more likely to crack, and the lossy cutting is usually adopted in the areas near both ends of the cutting edge 210. Therefore, the areas near both ends of the cutting edge 210 are more likely to crack. If the size of the first gasket 21 is too large, the size of the avoidance area 201 will be too small, making it difficult to better avoid the lossy cutting area; if the size of the first gasket 21 is too small, it will affect the support, buffering, and limiting effects of the first gasket 21 on the battery half-piece 200. Within the above value range, the limiting stability of the battery half-piece 200 and the effect of reducing the broken corner are taken into account.
[0059] Among them, for different battery half-pieces 200, different values can be selected for A, and the size of the first gasket 21 in the first direction F1 can be adaptively changed to improve the limiting and anti-broken corner effects; or, in some specific embodiments, in the first direction F1, the size of the first gasket 21 can be less than X - 20 mm, so that the avoidance area 201 of the first gasket 21 can satisfy the avoidance of the lossy cutting positions of most battery half-pieces 200, improving the versatility of the first gasket 21 and facilitating the reduction of the cost of the packaging box 100.
[0060] In some other embodiments where the buffer gasket 20 includes the first gasket 21 and the first gasket 21 is a rectangular sheet, as Figure 3 shown, in the direction perpendicular to the cutting edge 210 of the battery half-piece 200, an avoidance area 201 is provided at one end of the first gasket 21 close to the cutting edge 210, and the avoidance area 201 is used to avoid the two corner portions 220 corresponding to the cutting edge 210.
[0061] Among them, the first box wall 11 of the box body 10 is rectangular and has a first side parallel or substantially parallel to the cutting edge 210 of the battery half piece 200 and a second side perpendicular or substantially perpendicular to the cutting edge 210 of the battery half piece 200. Considering that there may be errors in the placement position of the battery half piece 200 in the accommodating cavity, therefore, the direction perpendicular to the cutting edge 210 of the battery half piece 200 can be understood as the direction parallel to the second side of the first box wall 11 of the box body 10, as Figure 3 shown in the second direction F2.
[0062] Compared with the rectangular sheet of the non-avoidance area 201, in the above embodiment, by shortening the dimension of the first gasket 21 in the second direction F2, an avoidance area 201 is formed at one end of the first gasket 21 close to the cutting edge 210, and the avoidance area 201 can not only avoid two corners 220 at the same time, but also avoid the entire cutting edge 210. Whether the cutting edge 210 is processed by a lossy cutting, a non-lossy cutting or a combination of the two, the first gasket 21 can effectively avoid the fragmentation of the entire cutting edge 210 and the corresponding two corners 220, and the structure of the first gasket 21 is simple and easy to process.
[0063] In some embodiments, continue to refer to Figure 3 shown. In the direction perpendicular to the cutting edge 210 of the battery half piece 200, the dimension of the accommodating cavity is Y, and the dimension of the first gasket 21 is greater than Y / 2 and less than Y - A, where A is the lossy cutting length of the battery half piece 200.
[0064] Among them, the dimension Y of the accommodating cavity can be the difference between the dimension L2 of the first box wall 11 in the second direction F2 and the thicknesses of the third box wall 13 and the fourth box wall. For example, Y is L2 - 10 mm.
[0065] Within the above value range, the first gasket 21 can effectively avoid the entire cutting edge 210 and the area near the cutting edge 210, while ensuring the limiting area for the battery half piece 200 and ensuring the limiting effect. In some specific embodiments, the dimension of the first gasket 21 in the second direction F2 can be less than Y - 10 mm.
[0066] In still some other embodiments where the buffer gasket 20 includes the first gasket 21, as Figure 4 shown, the first gasket 21 has a first edge close to the cutting edge 210 in the direction perpendicular to the cutting edge 210 of the battery half piece 200, and chamfers are respectively provided at both ends of the first edge in the direction parallel to the cutting edge 210, and the chamfers are formed as the avoidance area 201.
[0067] Among them, compared with the rectangular sheet, the first gasket 21 cuts off part of the material at the chamfer to form an avoidance area 201. The cut-off material can be any shape such as a triangle or a sector, and the corresponding edge forming the chamfer can be a straight edge (such as Figure 4 shown), a convex arc edge, a concave arc edge, a wavy edge, etc. This can enable the avoidance area 201 of the first gasket 21 to avoid the corner 220 of the battery half piece 200. Moreover, in the area between the two corners 220 (i.e., the area where the first edge is not cut off) and the area on one side of the corner 220 in the second direction F2 (i.e., the area where the second edges on both sides of the first gasket 21 in the first direction F1 are not cut off), the first gasket 21 can still buffer and limit the battery half piece 200, which is beneficial to increasing the matching area between the first gasket 21 and the battery half piece 200 and improving the buffering and limiting effects.
[0068] In some embodiments, continue to refer to Figure 4 shown. In the direction parallel to the cutting edge 210 of the battery half piece 200, the size of the accommodation cavity is X, and the maximum size of the avoidance area 201 of the first gasket 21 is greater than A and less than X / 4, where A is the lossy cutting length of the battery half piece 200.
[0069] Among them, the maximum size of the avoidance area 201 of the first gasket 21 refers to the size extended by the edge of the chamfer in the first direction F1. For example, Figure 4 shown, the edge of the chamfer is a straight line, which extends obliquely with respect to the first direction F1, and the size it extends in the first direction F1 is the maximum size of the avoidance area 201.
[0070] Within the above value range, the avoidance area 201 of the first gasket 21 can effectively avoid the lossy cutting position of the battery half piece 200 in the first direction F1 and take into account the buffering and limiting effects on the battery half piece 200.
[0071] In some embodiments, continue to refer to Figure 4 shown. In the direction perpendicular to the cutting edge 210 of the battery half piece 200, the size of the accommodation cavity is Y, and the maximum size of the avoidance area 201 of the first gasket 21 is greater than A and less than Y / 2, where A is the lossy cutting length of the battery half piece 200.
[0072] Among them, the maximum size of the avoidance area 201 of the first gasket 21 refers to the size extended by the edge of the chamfer in the second direction F2. For example, Figure 4 shown, the edge of the chamfer is a straight line, which extends obliquely with respect to the second direction F2, and the size it extends in the second direction F2 is the maximum size of the avoidance area 201.
[0073] Within the above-mentioned value range, the avoidance area 201 of the first gasket 21 can effectively avoid the area near the damaged cutting position of the battery half piece 200 in the second direction F2, and at the same time take into account the buffering and limiting effect on the battery half piece 200.
[0074] In some specific embodiments, in the first direction F1, the maximum dimension of the avoidance area 201 of the first gasket 21 is greater than 10 mm, and in the second direction F2, the dimension of the avoidance area 201 of the first gasket 21 is greater than 10 mm.
[0075] In some embodiments of the present invention, as Figures 1 - 4 shown, the buffer gasket 20 includes a side gasket provided on one side perpendicular to the thickness direction of the battery half piece 200. In the thickness direction of the battery half piece 200, the dimension of the avoidance area 201 of the side gasket is equal to the dimension of the side gasket.
[0076] In other words, on the side gasket, the avoidance area 201 penetrates the side gasket along the thickness direction of the battery half piece 200, so that the side gasket can form a good avoidance of any position in the thickness direction of the battery half piece 200 near the corner 220. In the embodiment where multiple battery half pieces 200 are stacked, the avoidance area 201 of the side gasket can form a good avoidance of the corners 220 of multiple battery half pieces 200, so that the battery half pieces 200 in the packaging box 100 are not prone to broken corner problems.
[0077] In some embodiments, continue to refer to Figures 1 - 4 shown, the side gasket includes two second gaskets 22, a third gasket 23 and a fourth gasket 24. The two second gaskets 22 are respectively provided on both sides of the battery half piece 200 in the direction parallel to the cutting edge 210. In the direction perpendicular to the cutting edge 210, the third gasket 23 and the fourth gasket 24 are respectively provided on one side close to the cutting edge 210 and one side far from the cutting edge 210. For example Figure 1 shown, the second gasket 22 is provided on the second box wall 12, the third gasket 23 is provided on the third box wall 13 close to the cutting edge 210, and the fourth gasket 24 is provided on the third box wall 13 far from the cutting edge 210.
[0078] The dimension of the accommodation cavity parallel to the cutting edge 210 is X, and the dimension perpendicular to the cutting edge 210 is Y. The dimension of the box body 10 parallel to the cutting edge 210 is L1, that is, the dimension of the first box wall 11 along the first direction F1 is L1. Among them, in the direction perpendicular to the cutting edge 210, an avoidance area 201 is provided at one end of the second gasket 22 close to the cutting edge 210. The dimension of the second gasket 22 is greater than Y / 2 and less than Y - A; in the direction parallel to the cutting edge 210, avoidance areas 201 are respectively provided at both ends of the third gasket 23. The dimension of the third gasket 23 is greater than X / 2 and less than X - 2A. The fourth gasket 24 does not have an avoidance area 201, and the dimension of the fourth gasket 24 is greater than X and less than L1. A is the lossy cutting length of the battery half piece 200.
[0079] In the above embodiment, the battery half piece 200 has only one cutting edge 210. Among the side gaskets, the two second gaskets 22 and the third gasket 23 are both adjacent to the cutting edge 210. By providing the avoidance area 201 in the adjacent area, the two second gaskets 22 and the third gasket 23 will not contact the corner 220 of the battery half piece 200, and it is not easy to cause broken corners; the fourth gasket 24 is far from the cutting edge 210. By not providing the avoidance area 201 for the fourth gasket 24, the fourth gasket 24 can cooperate with the battery half piece 200 in a large area, and can provide good buffering and limiting for the battery half piece 200, improving the stability of the battery half piece 200.
[0080] In addition, within the above value range, the second gasket 22, the third gasket 23 and the fourth gasket 24 take into account both the anti-broken corner effect and the limiting effect, and have a better effect of reducing the loss of the battery half piece 200 during transportation.
[0081] The other components and operations of the packaging box 100 of the battery half piece 200 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.
[0082] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0083] In the description of this specification, the descriptions referring to terms such as "embodiment", "specific embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
[0084] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.
Claims
1. A packaging box (100) for a half-cell (200) of a battery, characterized in that, The battery half piece (200) has a cutting edge (210) formed by cutting and corner portions (220) located at both ends of the cutting edge (210). The packaging box (100) includes: A box body (10) having a receiving cavity for receiving the battery half piece (200). A buffer gasket (20) provided on the inner wall of the receiving cavity and used for buffering and limiting the battery half piece (200). The buffer gasket (20) has an avoidance area (201) opposite to the corner portion (220) of the battery half piece (200) to avoid the corner portion (220).
2. The packaging box (100) for the battery half piece (200) according to claim 1, characterized in that, The buffer gasket (20) includes a first gasket (21) provided on one side in the thickness direction of the battery half piece (200). The first gasket (21) is a rectangular sheet. Among them, In the direction parallel to the cutting edge (210) of the battery half piece (200), the avoidance areas (201) are respectively provided at both ends of the first gasket (21), and the two avoidance areas (201) are respectively used to avoid the two corner portions (220) corresponding to the cutting edge (210).
3. The packaging box (100) of the battery half cell (200) according to claim 2, characterized in that, In the direction parallel to the cutting edge (210) of the battery half piece (200), the size of the receiving cavity is X, and the size of the first gasket (21) is greater than X / 2 and less than X - 2A, where A is the lossy cutting length of the battery half piece (200).
4. The packaging box (100) for the battery half piece (200) according to claim 1, characterized in that, The buffer gasket (20) includes a first gasket (21) provided on one side in the thickness direction of the battery half piece (200). The first gasket (21) is a rectangular sheet. Among them, In the direction perpendicular to the cutting edge (210) of the battery half piece (200), the avoidance area (201) is provided at one end of the first gasket (21) close to the cutting edge (210), and the avoidance area (201) is used to avoid the two corner portions (220) corresponding to the cutting edge (210).
5. The packaging box (100) for the battery half piece (200) according to claim 4, characterized in that, In the direction perpendicular to the cutting edge (210) of the battery half piece (200), the size of the receiving cavity is Y, and the size of the first gasket (21) is greater than Y / 2 and less than Y - A, where A is the lossy cutting length of the battery half piece (200).
6. The packaging box (100) for the battery half piece (200) according to claim 1, characterized in that, The buffer gasket (20) includes a first gasket (21) provided on one side in the thickness direction of the battery half piece (200). The first gasket (21) has a first edge close to the cutting edge (210) in the direction perpendicular to the cutting edge (210) of the battery half piece (200). Chamfers are respectively provided at both ends of the first edge in the direction parallel to the cutting edge (210), and the chamfers are formed as the avoidance areas (201).
7. The packaging box (100) of the battery half piece (200) according to claim 6, characterized in that In a direction parallel to the cutting edge (210) of the battery half piece (200), the size of the accommodation cavity is X, and the maximum size of the avoidance area (201) of the first gasket (21) is greater than A and less than X / 4, where A is the lossy cutting length of the battery half piece (200); and / or, In a direction perpendicular to the cutting edge (210) of the battery half piece (200), the size of the accommodation cavity is Y, and the maximum size of the avoidance area (201) of the first gasket (21) is greater than A and less than Y / 2, where A is the lossy cutting length of the battery half piece (200).
8. The packaging box (100) for the battery half cell (200) according to claim 1, characterized in that, The buffer gasket (20) includes side gaskets provided on one side perpendicular to the thickness direction of the battery half piece (200). In the thickness direction of the battery half piece (200), the size of the avoidance area (201) of the side gaskets is equal to the size of the side gaskets.
9. The packaging box (100) for the battery half piece (200) according to claim 8, characterized in that, The side gaskets include two second gaskets (22), a third gasket (23), and a fourth gasket (24). The two second gaskets (22) are respectively provided on both sides of the battery half piece (200) in the direction parallel to the cutting edge (210). In the direction perpendicular to the cutting edge (210), the third gasket (23) and the fourth gasket (24) are respectively provided on one side close to the cutting edge (210) and one side far from the cutting edge (210). The size of the accommodation cavity parallel to the cutting edge (210) is X and the size perpendicular to the cutting edge (210) is Y. The size of the box body (10) parallel to the cutting edge (210) is L1. Among them, In the direction perpendicular to the cutting edge (210), the avoidance area (201) is provided at one end of the second gasket (22) close to the cutting edge (210), and the size of the second gasket (22) is greater than Y / 2 and less than Y - A; In the direction parallel to the cutting edge (210), the avoidance areas (201) are respectively provided at both ends of the third gasket (23). The size of the third gasket (23) is greater than X / 2 and less than X - 2A. The fourth gasket (24) is not provided with the avoidance area (201), and the size of the fourth gasket (24) is greater than X and less than L1, where A is the lossy cutting length of the battery half piece (200).
10. The packaging box (100) for the battery half cell (200) according to any one of claims 1-9, characterized in that, The buffer gasket (20) is made of EPE or sponge material.