Mechanical packaging cell tray

Abstract

The utility model provides a kind of mechanical packaging electric core tray, comprising: tray body.This kind of mechanical packaging electric core tray is provided with clamping position cover plate, air bag supporting strip, top seal baffle, side seal baffle, electric core groove, reinforcing rib and positioning hole and other structures, and electric core groove provides exclusive and regular placement space for electric core, realizes multiple electric cores simultaneously carrying, improves processing efficiency;Reinforcing rib disperses electric core weight, enhances tray structure strength and bearing capacity, avoids tray deformation, guarantees processing process stability, air bag supporting strip supports electric core air bag, top seal baffle limits electric core up and down displacement, side seal baffle restricts electric core left and right displacement, forms multidirectional limiting system, the high hardness characteristics of clamping position cover plate ensure that limiting is stable, ultra-thin baffle edge design reduces electric core unsealed area, avoids heat sealing interference, reduces packaging problem, positioning hole is adapted with oilless bushing, realizes tray and equipment accurate butt joint, avoids electric core displacement in multiple process conversion, guarantees packaging precision.

Description

Technical Field

[0001] This utility model relates to the field of battery cell packaging technology, and more specifically, to a mechanically packaged battery cell tray. Background Technology

[0002] In the battery cell packaging and electrolyte filling process, extremely high requirements are placed on the precise positioning and stable bearing of the battery cell. Only by ensuring that the battery cell is fixed in position and stable in posture during processing can the packaging process be guaranteed to proceed smoothly and avoid problems such as unqualified packaging dimensions and electrolyte leakage during electrolyte filling due to positioning deviation. At the same time, the subsequent high-temperature baking process in the oven also requires the bearing device to have excellent heat resistance and structural stability to ensure that it does not deform under high temperature environment, so as not to affect the processing accuracy and morphological integrity of the battery cell.

[0003] However, existing mechanically packaged cell trays have the following problems when in use:

[0004] Traditional battery cell carriers generally suffer from insufficient positioning accuracy, making it difficult to achieve precise docking with production equipment. In addition, their poor structural stability makes it easy for cells to shift or collide during the conversion and processing of processes such as packaging and liquid injection. This not only disrupts the orderly arrangement of the cells but also directly affects the packaging quality and increases the defect rate. Furthermore, some carriers have unreasonable spatial layout designs, resulting in low cell carrying density and poor space utilization. This fails to meet the requirements of cell packaging efficiency in large-scale mass production scenarios and restricts the overall production line capacity improvement.

[0005] This invention can accurately position the battery cell, avoid displacement and collision during packaging and liquid injection, and ensure packaging quality; it can stably support the battery cell and prevent deformation under high temperature baking; it also optimizes the spatial layout, improves the load-bearing density and utilization rate, meets the needs of large-scale mass production, and increases the production line capacity. Utility Model Content

[0006] The present invention aims to solve the technical problems mentioned in the background art and provide a mechanically packaged battery cell tray.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mechanically packaged battery cell tray, comprising: a tray body, wherein the upper and lower ends and left and right sides of the tray body are detachably connected to a locking cover plate, an air bag support strip is fixedly installed on the back of the tray body, the air bag support strip is located in the middle of the back of the tray body, and a top sealing strip is fixedly installed above and below it, a plurality of battery cell slots are opened on the front of the tray body, and reinforcing ribs are fixedly installed inside the tray body.

[0008] A further preferred embodiment: the front of the pallet body has four positioning holes, and three side sealing strips are fixedly installed at equal intervals on the right end of the pallet body.

[0009] A further preferred embodiment: the positioning holes are respectively distributed at the four corners of the outer perimeter of the cell slot and are adapted to the oil-free bushing.

[0010] A further preferred embodiment: the tray body is heat-treated to achieve a flatness of 0.2mm.

[0011] A further preferred option: the card slot cover is made of alloy steel with heat treatment, and features high hardness and an ultra-thin edge design.

[0012] A further preferred embodiment: the cell slot array is distributed on the tray body, and the reinforcing ribs are distributed in an array between the cell slots.

[0013] A further preferred embodiment: the positioning hole can assist in the cell packaging.

[0014] Beneficial effects:

[0015] 1. The device features a locking cover made of heat-treated alloy steel, possessing high hardness and a certain degree of toughness. When fixing and securing the battery cells, it is not easily deformed or worn even under lateral impact and vibration stress, preventing cell displacement due to structural failure, ensuring stable production processes, resisting corrosive media and assembly friction, extending service life, reducing replacement costs and production line downtime. Furthermore, the ultra-thin baffle design of the locking cover offers significant advantages: it reduces the gap between the battery cell and the baffle, decreasing the unsealed area and increasing the cell's energy density; it also optimizes the tray space layout, accommodating more battery cell specifications and improving tray versatility; and it avoids spatial interference with the heat sealing knife, allowing the heat sealing knife to precisely act on the battery cell packaging area, ensuring sealing strength and airtightness, and reducing the rate of defective products.

[0016] 2. By incorporating airbag support strips, top sealing strips, and side sealing strips, the mechanically packaged battery cell tray provides comprehensive cell positioning and support, helping to improve production quality and efficiency. The airbag support strips, installed in the center of the back of the tray body, stably support the battery cell airbags, preventing damage from sagging or folding during production and ensuring their normal function. They also provide auxiliary support for the battery cells as a whole, making them more stable when placed within the tray. The top sealing strips, located above and below the airbag support strips, limit the movement of the battery cells from both above and below, effectively restricting their movement. The vertical displacement of the battery cell prevents it from shifting vertically during process changes or processing, ensuring that the battery cell is always in the preset working position. The side sealing strips are evenly distributed on the right end of the tray body, which can constrain the battery cell from the right side to prevent it from shifting in the left and right directions. Together with the top sealing strip, air bag support strip and positioning cover, they form a multi-directional limiting system, which further ensures that the battery cell is arranged neatly, reduces problems such as poor packaging and liquid leakage caused by battery cell displacement, ensures the smooth operation of each process, and improves production stability and product qualification rate.

[0017] 3. By incorporating cell slots and reinforcing ribs, the cell slot array is distributed on the front of the tray body, providing dedicated placement space for the cells. This allows the cells to be arranged orderly on the tray, preventing them from squeezing or colliding with each other and ensuring neat placement. Simultaneously, this design allows multiple cells to be carried simultaneously, significantly improving cell loading efficiency and laying the foundation for batch processing in subsequent processes such as packaging, liquid injection, and baking. This further enhances overall production efficiency. The reinforcing ribs are fixed in an array inside the tray body and located between the cell slots, effectively distributing the weight of the cells and evenly transferring the pressure from the cells to the entire tray. This prevents localized stress concentration that could lead to tray deformation, significantly enhancing the tray's structural strength and load-bearing capacity, and extending its service life. Furthermore, the reinforcing ribs improve the structural stability of the tray during processing. For example, during baking, they prevent the tray from deforming due to heat, ensuring uniform heating of the cells, guaranteeing processing quality, and reducing cell processing defects caused by tray deformation.

[0018] 4. In summary, this type of mechanically packaged battery cell tray, through the configuration of a locking cover plate, air bag support strip, top sealing strip, side sealing strip, battery cell slot, reinforcing ribs, and positioning holes, provides dedicated and orderly placement space for the battery cells, enabling the simultaneous support of multiple battery cells and improving the efficiency of loading and subsequent batch processing; the reinforcing ribs distribute the weight of the battery cells, enhance the structural strength and load-bearing capacity of the tray, prevent tray deformation, and ensure stability during processing; the air bag support strip supports the battery cell air bags; the top sealing strip restricts the vertical displacement of the battery cells; and the side sealing strips constrain the left and right movement of the battery cells. The rightward shift, along with the three components and the detachable locking cover, forms a multi-directional limiting system. The high hardness of the locking cover ensures stable limiting, while the ultra-thin edge design reduces the unsealed area of ​​the battery cell and avoids heat sealing interference. Together, they ensure that the battery cell is accurately positioned and neatly arranged in the tray, reducing packaging defects. The positioning holes are compatible with the oil-free bushings, enabling precise docking between the tray and the equipment, preventing battery cell displacement during multi-process transitions, and ensuring packaging accuracy. The various structures support each other, giving the tray high stability, high precision, and high efficiency, meeting the multi-process production needs of large soft-pack battery cells. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the overall rear structure of this utility model.

[0021] Figure 1-2 In the middle: 1. Pallet body; 101. Locking cover plate; 102. Air bag support strip; 103. Top sealing strip; 104. Battery cell slot; 105. Reinforcing rib; 106. Positioning hole; 107. Side sealing strip. Detailed Implementation

[0022] The following will refer to the appendix in the embodiments of this utility model. Figures 1-2 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0023] Please see Figure 1-2In this embodiment of the utility model, a mechanically packaged battery cell tray includes: a tray body 1, with detachable locking covers 101 on both the upper and lower ends and the left and right sides of the tray body 1; an air bag support strip 102 fixedly installed on the back of the tray body 1, the air bag support strip 102 being located in the middle of the back of the tray body 1, and top sealing strips 103 fixedly installed above and below it; a plurality of battery cell slots 104 opened on the front of the tray body 1; reinforcing ribs 105 fixedly installed inside the tray body 1; four positioning holes 106 opened on the front of the tray body 1; and three side sealing strips 107 fixedly installed at equal intervals on the right end of the tray body 1. The battery cell slots 104 are arrayed on the tray body 1, and the reinforcing ribs 105 are arrayed between the battery cell slots 104. The tray body 1 serves as the core support. The internal array of reinforcing ribs 105, located between the cell slots 104, evenly distributes the weight of the cells across the entire tray, preventing localized stress concentration and thus reducing tray deformation. This significantly improves the tray's load-bearing capacity. Simultaneously, the airbag support strip 102 in the center of the tray's back works in conjunction with the top sealing strips 103 above and below. The airbag support strip 102 supports the cell airbags, while the top sealing strips 103 restrict vertical displacement of the cells, further enhancing the structural stability of the cells within the tray. The four positioning holes 106 on the front of the tray body 1 precisely align with the positioning mechanism of the production equipment during the entire process of cell packaging, liquid injection, and baking. This ensures that the tray and the internal cells are always in the designated operating positions, effectively preventing... During the various processes and processing steps, the battery cells may shift. To ensure packaging accuracy, the tray body 1 features detachable locking covers 101 on both the upper and lower ends and the left and right sides. These covers are made of alloy steel and heat-treated to achieve high hardness. They are also designed with an ultra-thin edge structure. After the battery cells are placed, installing the locking covers 101 allows for positioning of the cells from all sides of the tray. This ensures neat cell arrangement and, due to the ultra-thin edge design, reduces the unsealed area of ​​the cells, improving packaging quality. When using this tray, a tray inspection and pre-processing procedure is necessary. Personnel must check the tray body 1 for deformation or damage, and ensure the structural components such as the reinforcing ribs 105, air bag support strips 102, and top sealing strips 103 are intact. They must also confirm that the four positioning holes 106 are not blocked or worn to ensure positioning accuracy. Subsequently, the pallet is placed at the initial station of the production line and initially connected to the positioning mechanism of the production line through the positioning hole 106, completing the pallet preparation work. The battery cells are then conveyed one by one into the battery cell slots 104 on the front of the pallet body 1. The array-distributed design of the battery cell slots 104 allows multiple battery cells to be carried simultaneously. During the placement of the battery cells, the air bag support strips 102 automatically support the battery cell air bags, and the top sealing strips 103 restrict the vertical displacement of the battery cells, ensuring that the battery cells are accurately positioned within the battery cell slots 104. After all battery cell slots 104 are filled with battery cells, the workers or automatic assembly equipment install the positioning cover plates 101 on the upper and lower ends and left and right sides of the pallet body 1. The ultra-thin baffles of the positioning cover plates 101 limit the movement of the battery cells around their perimeter, further ensuring that the battery cells are arranged neatly.The battery cell loading process is completed. During packaging, the packaging equipment packages the battery cells according to the positions determined by the positioning holes 106. The high flatness of the tray and the ultra-thin edge design of the locking cover 101 ensure the stability of the battery cell position during packaging and reduce the unsealed area, thus improving packaging quality. During baking, the baking equipment bakes the battery cells. The heat resistance and structural stability of the tray ensure that the battery cells are heated evenly during baking. At the same time, the reinforcing ribs 105 and various limiting structures prevent the battery cells from changing shape or shifting due to heat, ensuring the baking effect. After all processing steps are completed, the processed battery cells are removed one by one from the battery cell slot 104 for subsequent testing, packaging, and other steps. After the battery cells are unloaded, the tray is cleaned and inspected. If the tray is undamaged, it can be returned to the preparation stage to enter the next battery cell processing cycle. If any tray components are found to be damaged, they are repaired or replaced to ensure the reliability of subsequent use.

[0024] In this embodiment of the invention, positioning holes 106 are distributed at the four corners of the outer periphery of the cell slot 104 and are adapted to the oil-free bushing. The positioning holes 106 can assist in cell packaging. The positioning holes 106 are distributed at the four corners of the outer periphery of the cell slot 104 to avoid occupying the core cell-bearing area on the front of the tray. Since the cell slot 104 adopts an array distribution, it is a key area for the tray to bear large-size soft-pack cells. Setting the positioning holes at the four corners allows the cell slot 104 to achieve a full-coverage layout on the front of the tray, without reserving extra intermediate space for the positioning structure. This ensures the loading quantity of soft-pack cells, fully utilizes the tray's bearing capacity, and further improves the single-processing efficiency of cell production. Meanwhile, the four corner positioning holes 106 form a four-point positioning system. Compared with other distribution methods, four-point positioning can fix and calibrate the tray from the four diagonal directions. This layout can effectively limit the translational deviation of the tray in the X and Y axes, as well as the rotational deviation around the Z axis, achieving all-round positioning constraints on the tray. During the conversion of multiple processes such as cell packaging, liquid injection, and baking, even when faced with the influence of equipment conveying vibration and external forces in process processing, the four-point positioning structure can still maintain the positional stability of the tray and the internal cells, avoiding tray displacement caused by insufficient number or unreasonable distribution of positioning points, and controlling the positioning error within a very small range; the oil-free bushing serves as the positioning hole 10. The core function of the adapter component between the 6th and the equipment positioning mechanism is to achieve a low-friction, lubrication-free, and wear-resistant fit. When the positioning hole 106 is fitted with the oil-free bushing, the inner wall of the oil-free bushing can fit tightly against the equipment positioning pin. The bushing itself uses a self-lubricating material, such as a graphite-containing metal-based composite material, which can reduce the direct friction between the positioning pin and the inner wall of the positioning hole without additional lubricating oil. In actual operation, whenever the pallet is transported between processes, such as from the loading station to the packaging station, or from the liquid injection station to the baking station, the equipment positioning pin needs to be repeatedly inserted and pulled out of the positioning hole 106. If the oil-free bushing is fitted, the metal surfaces of the positioning pin and the positioning hole 106 will not be directly... Direct contact and long-term friction can cause wear on the inner wall of the positioning hole, increasing its diameter and creating a positioning gap, thus affecting positioning accuracy. Oil-free bushings, on the other hand, concentrate friction loss within the bushing itself, extending the service life of the positioning hole 106 through its wear-resistant properties. At the same time, the self-lubricating properties reduce jamming during insertion and removal, ensuring the speed and smoothness of the docking between the positioning pin and the positioning hole 106, avoiding production line stagnation caused by poor docking, and ensuring production efficiency. In addition, the standardized dimensions of the oil-free bushing can compensate for minor errors that may exist during the machining of the positioning hole 106, ensuring the consistency of the positioning holes of different pallets with the positioning pins of the equipment, and achieving unified positioning in mass production.

[0025] In this embodiment of the utility model, the tray body 1 is heat-treated to achieve a flatness of 0.2mm, which can meet the production requirements of large soft-pack batteries with a length of 1.3 meters and a width of 1 meter. Through appropriate heat treatment, the flatness of the tray is controlled within 0.2mm. This high-precision flatness can meet the requirements of different processes such as packaging, liquid injection, and baking for the surface precision of the tray. In the packaging process, the stable structure and precise positioning ensure the packaging size accuracy; in the liquid injection process, the regular arrangement of cells and reliable limiting prevent electrolyte leakage during injection; in the baking process, the heat resistance and structural stability of the tray ensure that the cells are heated evenly and remain stable in shape during the baking process.

[0026] In this embodiment of the utility model, the positioning cover 101 is made of alloy steel with heat treatment, featuring high hardness and an ultra-thin edge design. Using alloy steel as the base material, combined with professional heat treatment processes such as quenching and tempering, the mechanical properties of the material are significantly improved. Alloy steel itself possesses superior strength and toughness compared to ordinary carbon steel. After heat treatment, the internal crystal structure rearranges, resulting in a substantial increase in hardness, typically reaching HRC45-55, while maintaining a certain level of toughness to prevent brittle fracture. During the battery cell production process, the positioning cover 101 needs to limit and fix the battery cells. Especially in scenarios such as automatic tray flipping and process transition conveying, the cover will bear the lateral impact force and vibration stress of the battery cells. The high hardness ensures that the cover is not easily deformed or worn under long-term stress, preventing battery cell displacement due to cover structure failure and ensuring the stability of the entire production process. Qualitatively, the size of the unsealed area of ​​a pouch cell directly affects its energy density and safety. An excessively large unsealed area not only wastes cell space but may also increase the risk of electrolyte leakage. The 101 slot cover adopts an ultra-thin baffle design. Compared with traditional thick baffle covers, it significantly reduces the gap between the cell and the cover baffle without affecting the limiting effect, thereby reducing the size of the unsealed area of ​​the cell. For example, for a large pouch cell that is 1.3 meters long, the ultra-thin baffle design can reduce the unsealed area of ​​a single cell. With the same tray size, it can accommodate more cell specifications. During the cell heat sealing process, the ultra-thin baffle design can avoid spatial interference with the heat sealing knife, allowing the heat sealing knife to act precisely on the cell packaging area. This ensures that the heat sealing temperature and pressure are evenly transmitted to the cell edge, guaranteeing the sealing strength and sealing performance, and reducing the packaging defect rate caused by cover interference.

Claims

1. A mechanically packaged battery cell tray, comprising: The pallet body (1) is characterized in that: the upper and lower ends and the left and right sides of the pallet body (1) are detachably connected with a slot cover plate (101), the back of the pallet body (1) is fixedly installed with an air bag support strip (102), the air bag support strip (102) is located in the middle of the back of the pallet body (1), and the top sealing strip (103) is fixedly installed above and below, the front of the pallet body (1) has several battery cell slots (104), and the inside of the pallet body (1) is fixedly installed with reinforcing ribs (105).

2. The mechanically packaged battery cell tray according to claim 1, characterized in that: The pallet body (1) has four positioning holes (106) on the front and three side sealing strips (107) are fixedly installed at equal intervals on the right end of the pallet body (1).

3. The mechanically packaged battery cell tray according to claim 2, characterized in that: The positioning holes (106) are distributed at the four corners of the outer periphery of the cell groove (104) and are adapted to the oil-free bushing.

4. The mechanically packaged battery cell tray according to claim 1, characterized in that: The tray body (1) is heat-treated to achieve a flatness of 0.2 mm.

5. The mechanically packaged battery cell tray according to claim 1, characterized in that: The card slot cover (101) is made of alloy steel with heat treatment, high hardness, and ultra-thin edge design.

6. The mechanically packaged battery cell tray according to claim 1, characterized in that: The cell slots (104) are arrayed on the tray body (1), and the reinforcing ribs (105) are arrayed between the cell slots (104).

7. A mechanically packaged battery cell tray according to claim 3, characterized in that: The positioning hole (106) can assist in the cell encapsulation.

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