Battery cell tray for cooling laminated battery cell after hot pressing

Abstract

The utility model discloses a battery cell tray for cooling a laminated battery cell after hot pressing, a main body of the battery cell tray adopts an upper layer of hollowed-out supporting plate and a lower layer of hollowed-out supporting plate which are made of metal materials, so that heat dissipation of the laminated battery cell is facilitated, and the overall mass of the tray can be reduced; a four-corner locking cam follower is arranged at the bottom, and wear-resistant high-hardness polyurethane strips are arranged on the four edges of the bottom, so that the smoothness, stability and durability of the tray on a conveying line can be guaranteed; and the laminated battery cell is fixed on the surface through the adjustable side baffle blocks and corner baffle blocks, so that the laminated battery cell fixing device can adapt to laminated battery cells with different sizes, and the universality of the laminated battery cells with different models and sizes is improved. According to the utility model, the uniform heat dissipation of the upper and lower surfaces of the laminated battery cell after hot pressing is facilitated, and the ideal cooling effect of the laminated battery cell can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of laminated battery core production equipment, in particular to a battery core tray for cooling laminated battery cores after hot pressing. Background Art

[0002] In the automated production process of lithium batteries, one of the steps is to use a stacking machine to stack the pole pieces and diaphragms to form a stacked battery cell before proceeding to the subsequent processes. Generally, after the stacked battery cell is formed, it needs to be loaded on a pallet and automatically transferred to the downstream processes through the logistics line.

[0003] Chinese utility model patent CN 211108568 U discloses a transmission tray for stacked battery cell groups, including: a tray body, a clamping mechanism, a pressurizing clamp and a lifting assembly. The battery cell groups are pressurized by the clamping mechanism. For battery cell groups of different sizes, there is no need to re-open the mold for injection molding and replace the tray, which improves compatibility and is not easy to scratch the battery cell groups.

[0004] Chinese utility model patent CN 217477826 U discloses a stacked cell tray, including a tray base, at least one stacking area is arranged on the surface of the tray base; and multiple sets of pole piece clamping devices. The tray base can move along with the conveyor belt of the production line, and can move multiple formed stacks at one time, and the pole piece clamping device can clamp the staggered stacked pole pieces on the stacking area to prevent the pole piece stacking from offsetting and improve the stacking speed of the production line.

[0005] Chinese invention patent CN 110040330 A discloses a soft-pack stacked battery cell transport pallet, including a pallet base plate and a limit block, and also includes at least two clamping mechanisms; by adding a clamping mechanism to the pallet base plate, the battery cell can be automatically clamped, thereby avoiding collision and damage to the battery cell during transportation, and improving the qualified rate of the battery cell.

[0006] As described in the above patents, the existing stacked battery trays are mostly used to transport the stacked battery to the next process, and a clamping mechanism is added to prevent the battery stack from shifting and being damaged by collision during the transportation process. However, they lack the function of helping the stacked battery to cool down.

[0007] After the laminated battery cells are heated by hot pressing, they need to be placed on a tray and flow into the cooling channel. Since ordinary trays are not compatible with the material used, battery size, overall weight control and other requirements, the battery cell cooling will not achieve the expected effect and thus cannot meet production needs. Therefore, it is necessary to design a tray specifically for cooling laminated battery cells after hot pressing. Utility Model Content

[0008] In order to solve the above problems, the utility model provides a dual-cell tray (hereinafter referred to as cooling tray) for cooling laminated battery cells after hot pressing.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0010] The utility model provides a battery cell tray for cooling laminated battery cells after hot pressing, comprising an upper tray and a lower tray fixedly connected together, wherein the upper tray and the lower tray are hollow metal plates; polyurethane strips are arranged around the bottom of the lower tray, and cam followers are arranged at the four corners of the bottom of the lower tray; a plurality of workstations for laminated battery cells are arranged on the upper tray, and side blocks are arranged on both sides of the workstations, and corner blocks are arranged at the four corners of the workstations; the side blocks and the corner blocks are fixed on the upper tray, and the fixing positions thereof are adjustable; after the laminated battery cells are placed, the sides and the four corners thereof are limited and fixed by the side blocks and the corner blocks respectively.

[0011] Through the above technical solution, after the laminated battery cells are placed on the cooling tray of the utility model, there are positioning blocks around the laminated battery cells, and two layers of hollow metal support plates are below the laminated battery cells, which can increase the heat dissipation effect. The bottom layer of the cooling tray is surrounded by wear-resistant and high-hardness polyurethane strips, and the four corners are locked with cam followers to ensure the smoothness of the tray on the conveyor line. The position of the side blocks and corner blocks is adjustable to accommodate laminated battery cells of different sizes. The cooling tray of the utility model can make the laminated battery cells heated by hot pressing in the cooling channel, and the upper and lower surfaces of the laminated battery cells can obtain the heat dissipation effect of wire management.

[0012] Furthermore, the upper support plate is provided with a plurality of threaded holes, and the corner blocks and side blocks are provided with oblong holes, and screws are passed through the oblong holes and then screwed into the threaded holes to fix the corner blocks and side blocks on the upper support plate.

[0013] Furthermore, the corner block is L-shaped, and its oblong hole is arranged outward at 45°; the length direction of the oblong hole of the side block is the same as the width direction of the laminated battery core.

[0014] Through the above technical solution, a specific implementation scheme for adjusting the position of the side block and the corner block is provided. There may also be other implementation methods, such as setting a retaining spring, a spring, a slide rail, etc.

[0015] Furthermore, the upper support plate is in a fence shape, and a plurality of first heat dissipation holes are provided on the upper support plate.

[0016] Furthermore, a plurality of second heat dissipation holes are formed on the lower support plate, the second heat dissipation holes are circular or elliptical in shape, and the diameters of the second heat dissipation holes are greater than the diameters of the first heat dissipation holes.

[0017] Furthermore, the material of the upper support plate and the lower support plate is 6061-T6 alumina plate.

[0018] Through the above technical solution, the upper and lower trays can meet the support strength of the laminated battery cells, and the hollowing area is as large as possible, which can enhance the heat dissipation effect of the laminated battery cells on the one hand, and reduce the weight of the entire cooling tray on the other hand. And after testing, 6061-T6 anodized alumina plate is the best material for the upper and lower trays.

[0019] Furthermore, a storage card is provided at the bottom center of the lower support plate, which can be used to store information of the laminated battery cells.

[0020] The above technical solution can facilitate the subsequent automatic identification of the stacked battery cells carried by the cooling tray.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The double-cell tray for cooling laminated battery cells after hot pressing provided by the utility model is specially designed for the laminated battery cells to flow into the cooling channel for heat dissipation after being heated by hot pressing. The main body adopts a hollow tray made of upper and lower layers of metal materials, which is helpful for the heat dissipation of the laminated battery cells and can reduce the overall mass of the tray; the bottom adopts a design structure with four-corner locking cam followers and wear-resistant high-hardness polyurethane strips on the four sides of the bottom, which can ensure the smoothness and stability and durability of the tray on the conveyor line; the surface of the upper tray fixes the laminated battery cells through adjustable side blocks and corner blocks, which can adapt to different sizes of laminated battery cells and improve the versatility of laminated battery cells of different models and sizes. The utility model helps to evenly dissipate the heat on the upper and lower surfaces of the laminated battery cells after hot pressing, and can achieve an ideal cooling effect for the laminated battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0024] In the attached picture:

[0025] Figure 1 It is a schematic diagram of a cooling tray supporting a battery cell of the utility model;

[0026] Figure 2 It is a schematic diagram of the overall structure of the cooling tray of the utility model;

[0027] Figure 3 yes Figure 2 A top view of

[0028] Figure 4It is a schematic diagram of the bottom structure of the cooling tray of the utility model;

[0029] Figure 5 It is a schematic diagram of the upper support plate of the utility model;

[0030] Figure 6 It is a schematic diagram of the lower support plate of the utility model;

[0031] Among them: 1—upper support plate; 2—lower support plate; 3—corner block; 4—side block; 5—first heat dissipation hole; 6—long round hole; 7—screw; 8—polyurethane strip; 9—cam follower; 10—second heat dissipation hole; 11—memory card; 12—laminated battery cell; 13—threaded hole. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below with reference to the accompanying drawings.

[0033] The utility model designs a cooling placement tray which is used for facilitating the stacked battery cores to flow into a cooling channel after the stacked battery cores are heated by hot pressing.

[0034] See also Figure 1-6 The utility model provides a double-cell tray for cooling laminated cells after hot pressing, comprising an upper tray 1 and a lower tray 2, wherein the upper tray 1 and the lower tray 2 are hollow metal plates, and the material thereof is preferably 6061-T6 alumina plate, which is conducive to heat dissipation of the laminated cells and reduces the overall weight of the cooling tray. The upper tray 1 and the lower tray 2 are fixedly connected by screws.

[0035] The upper support plate 1 is in the shape of a fence, and a plurality of first heat dissipation holes 5 are provided on the upper support plate 1; a plurality of corner blocks 3 and side blocks 4 are provided on the upper support plate 1, and a plurality of stacked battery cells 12 are arranged by the corner blocks 3 and the side blocks 4. The upper support plate 1 is provided with a plurality of threaded holes 13, and the corner blocks 3 and the side blocks 4 are provided with oblong holes 6. The screws 7 are passed through the oblong holes 6 and then screwed into the threaded holes 13 to fix the corner blocks 3 and the side blocks 4 on the upper support plate 1. Due to the oblong holes 6, the positions of the corner blocks 3 and the side blocks 4 are adjustable, and they can be compatible with battery cells of different sizes. The corner block 3 is L-shaped, and its oblong hole 6 is set outward at 45°; the length direction of the oblong hole 6 of the side block 4 is the same as the width direction of the stacked battery cell 12.

[0036] The lower tray 2 is provided with a plurality of second heat dissipation holes 10 of relatively large size, and the second heat dissipation holes 10 are circular or elliptical in shape. The bottom of the lower tray 2 is provided with wear-resistant and high-hardness polyurethane strips 8 (materials suitable for clean rooms) around the periphery, and the four corners of the bottom of the lower tray 2 are locked with cam followers 9. The bottom center of the lower tray 2 is locked with a storage card 11 with magnetically readable information, which can store information of the laminated battery core 12.

[0037] As a specific application example of the utility model, in the conveying equipment of Japan Vision A area, the laminated battery core is placed on the cooling tray of the utility model after being heated by hot pressing, and flows into the cooling channel of the belt conveyor line, and the laminated battery core is cooled by the fan in the channel. The upper and lower layers of the cooling tray of the utility model are made of metal and have a hollow design, which increases the heat dissipation effect and reduces the overall weight. The blocks around the laminated battery core are adjustable, and cam followers 9 are installed at the four corners of the bottom to ensure the smoothness of the tray on the conveyor line. The contact surface of the bottom and the conveyor belt is wear-resistant and high-hardness polyurethane. The middle of the bottom can be locked with a magnetic information storage card 11 for storing the information of the laminated battery core 12.

[0038] The cooling tray of the utility model is compatible with battery cells of different sizes, and heat can be dissipated on both the upper and lower surfaces of the stacked battery cells. The bottom design structure is more conducive to the smoothness of the transportation of the tray on the channel.

[0039] The above is a further detailed description of the utility model in combination with a specific implementation method, and it cannot be determined that the specific implementation of the utility model is limited to this; for technical personnel in the field of the utility model and related technical fields, based on the technical solution of the utility model, the expansion and replacement of operating methods and data should all fall within the protection scope of the utility model.

Claims

1. A battery tray for cooling laminated battery cells after hot pressing, characterized in that: The invention comprises an upper support plate (1) and a lower support plate (2) which are fixedly connected together, wherein the upper support plate (1) and the lower support plate (2) are hollow metal plates; polyurethane strips (8) are arranged around the bottom of the lower support plate (2), and cam followers (9) are arranged at the four corners of the bottom of the lower support plate (2); a plurality of workstations for stacked battery cells (12) are arranged on the upper support plate (1), and side blocks (4) are arranged on both sides of the workstations, and corner blocks (3) are arranged at the four corners of the workstations; the side blocks (4) and the corner blocks (3) are fixed on the upper support plate (1), and their fixing positions are adjustable; after the stacked battery cells (12) are placed, their sides and four corners are respectively fixed by the side blocks (4) and the corner blocks (3).

2. The battery tray for cooling laminated battery cells after hot pressing according to claim 1, characterized in that: The upper support plate (1) is provided with a plurality of threaded holes (13), and the corner block (3) and the side block (4) are provided with oblong holes (6). Screws (7) are passed through the oblong holes (6) and then screwed into the threaded holes (13) to fix the corner block (3) and the side block (4) on the upper support plate (1).

3. The battery tray for cooling laminated battery cells after hot pressing according to claim 2, characterized in that: The corner block (3) is L-shaped, and its oblong hole (6) is arranged outward at 45 degrees; the length direction of the oblong hole (6) of the side block (4) is the same as the width direction of the laminated battery core (12).

4. The battery tray for cooling laminated battery cells after hot pressing according to claim 1, characterized in that: The upper support plate (1) is in the shape of a fence, and a plurality of first heat dissipation holes (5) are provided on the upper support plate (1).

5. The battery tray for cooling laminated battery cells after hot pressing according to claim 4, characterized in that: The lower support plate (2) is provided with a plurality of second heat dissipation holes (10), the second heat dissipation holes (10) are circular or elliptical in shape, and the diameter of the second heat dissipation holes (10) is greater than the diameter of the first heat dissipation holes (5).

6. The battery tray for cooling laminated battery cells after hot pressing according to claim 1, characterized in that: The upper support plate (1) and the lower support plate (2) are made of 6061-T6 alumina plate.

7. The battery tray for cooling laminated battery cells after hot pressing according to claim 1, characterized in that: A storage card (11) is provided at the bottom centre of the lower support plate (2), and can be used to store information of the laminated battery core (12).

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