Battery pole group transfer blister tray

Abstract

The utility model provides battery pole group transfer blister tray belongs to the field of battery production, including base, the boss on base, the baffle on the boss, the side of baffle to the center of boss has the avoidance area, has the strip groove with the avoidance area intercommunication on the boss, the center area of boss has the flexible cushion block, through setting the avoidance area on the side of baffle to the center of boss, guarantee pole group in the process of transfer, its corner portion will not contact with blister tray, avoid pole group corner portion to hit, through setting the flexible cushion block in the center area of boss, can increase the friction between pole group and blister tray, reduce the relative sliding distance when pole group transfer, reduce pole group hit risk, through setting strip groove on the boss and carry out the vacuum breaking, avoid when taking pole group and take off the side diaphragm of pole lug and fold.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing, and in particular to a battery electrode assembly blister tray. Background Technology

[0002] With increasing environmental awareness, the development and application of lithium-ion batteries have improved. Square lithium-ion batteries, due to their high packaging reliability, good durability, and relatively simple assembly, have become a major product for new energy companies. Battery manufacturing processes mainly include slurry preparation, coating, rolling, slitting, assembly, and formation. Electrode assembly transfer is a crucial step in cell assembly, and current development trends are towards refinement, safety, and efficiency. Electrode assembly trays are currently the most common method for transferring electrode assemblies in cell assembly, and blister packs are an important component of electrode assembly trays, playing a role in both transporting and protecting the electrode assemblies. Currently, many blister packs have chamfered corners. The corner electrode sheets are relatively fragile, and under the condition of rhythmic transport on the logistics line, the corners of the electrode assemblies can collide with the chamfered areas of the blister pack, causing damage to the corners. This damage is difficult to detect and poses a safety risk to the battery cell. In addition, when the robotic arm picks up the electrode assembly, a momentary vacuum environment is created below the electrode assembly. Due to the thinning of the electrode sheet, the diaphragm and the electrode sheet do not fit well on the electrode tab side of the electrode assembly, which can easily cause the diaphragm to fold or even leak the electrode sheet. Utility Model Content

[0003] The technical problem to be solved by this utility model is: how to solve the problem of damage to the corner of the electrode assembly caused by the impact between the corner of the electrode assembly and the chamfer of the blister tray during the transfer of the electrode assembly, and the problem of the diaphragm on the electrode ear side folding when the electrode assembly is picked up.

[0004] This utility model solves the above-mentioned technical problems through the following technical solution: a battery electrode transfer blister tray, including a base, a boss on the base, a stop block on the boss, a clearance area on the side of the stop block facing the center of the boss, a strip groove on the boss that communicates with the clearance area, and a flexible pad in the central area of ​​the boss.

[0005] Beneficial effects: In the battery electrode pack transfer blister tray of this utility model, the stop block is used to limit and protect the electrode pack. By setting an avoidance area on the side of the stop block facing the center of the boss, it is ensured that the corners of the electrode pack will not come into contact with the blister tray during the transfer process, thus avoiding damage to the corners of the electrode pack. By setting a flexible pad in the center area of ​​the boss, the friction between the electrode pack and the blister tray can be increased, reducing the relative sliding distance of the electrode pack during transfer and reducing the risk of damage to the electrode pack. Considering that the electrode sheet on the tab side of the electrode pack generally has a thinning area at the edge and the diaphragm does not fit well with the electrode sheet, this utility model breaks the vacuum by setting a strip groove on the boss, thus preventing the diaphragm on the tab side from folding when the electrode pack is picked up.

[0006] Preferably, the stop is L-shaped, the clearance area is a C-shaped hole, and the clearance area is located at the corner of the side of the stop facing the center of the boss.

[0007] Beneficial effect: By setting C-shaped clearance holes at the inner corner of the stop, the contact between the pole group and the stop can be avoided to the greatest extent.

[0008] Preferably, the stop includes a lateral limiting block and a vertical limiting block, the lateral limiting block and the vertical limiting block are placed perpendicularly and do not contact each other, and the clearance area is located at the position opposite to the end of the lateral limiting block and the end of the vertical limiting block.

[0009] Beneficial effects: The stop block adopts the form of two limit blocks, eliminating the need for separate processing of the avoidance area, and the structure is simple and easy to process.

[0010] Preferably, there are four blocks, the sidewall of the strip groove is flush with the sidewall of the two blocks on the same side facing the center of the boss, and is connected to the two clearance areas on the same side.

[0011] Preferably, the four blocks enclose the working area for placing the pole group, and the avoidance area corresponds to the top corner of the working area.

[0012] Preferably, a blind hole is provided at the center of the boss, and the flexible pad is located outside the blind hole.

[0013] Beneficial effect: By setting a blind hole at the center of the boss, the resistance when picking up and putting down the electrode group can be reduced, and the electrode group can be prevented from being pinched and damaged.

[0014] Preferably, there are three flexible pads, with two flexible pads located on the outer sides of the two long sides of the blind hole, and one flexible pad located on the outer side of the short side of the blind hole; the thickness of the flexible pads is 0.5mm-1mm.

[0015] Preferably, the boss is rectangular, and the two short sides of the boss are respectively provided with clearance grooves.

[0016] Beneficial effects: By setting up clearance grooves, operating space is reserved for the robotic arm, making it easier for the robotic arm to pick up and put down the electrode groups during electrode group transfer.

[0017] Preferably, positioning posts are connected to both sides of the base, and grooves are opened on the two long sides of the boss, with the positioning posts located in the grooves.

[0018] Beneficial effects: By setting positioning posts, it is easy to position the blister tray and the pallet, so that the electrode assembly can be accurately placed on the blister tray.

[0019] Preferably, the base has multiple fixing holes around its perimeter.

[0020] Beneficial effect: By setting fixing holes on the base, it is easy to achieve a stable connection between the blister tray and the tray.

[0021] The advantages of this utility model are: the battery electrode transfer blister tray of this utility model can effectively improve the safety of battery cell production and ensure the high efficiency of battery production. Attached Figure Description

[0022] Figure 1 A perspective view of a battery electrode assembly transfer blister tray provided in Embodiment 1 of this utility model;

[0023] Figure 2 This is a top view of a battery electrode assembly transfer blister tray provided in Embodiment 1 of the present invention;

[0024] Figure 3 This is a front view of a battery electrode assembly transfer blister tray provided in Embodiment 1 of this utility model;

[0025] Figure 4 This is a top view of a battery electrode assembly transfer blister tray provided in Embodiment 2 of the present invention;

[0026] In the diagram: 10 base, 11 fixing hole, 20 boss, 21 strip groove, 22 blind hole, 23 clearance groove, 24 groove, 30 stop block, 31 clearance area, 32 horizontal limit block, 33 vertical limit block, 40 flexible pad block, 50 positioning post. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model are described clearly and completely below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides a battery electrode assembly transfer blister tray, including a base 10, a boss 20 on the base 10, and a stop block 30 on the boss 20. The stop block 30 has a clearance area 31 on one side facing the center of the boss 20. The boss 20 has a strip groove 21 that communicates with the clearance area 31. The central area of ​​the boss 20 has a flexible pad 40.

[0030] In the battery electrode pack transfer blister tray of this utility model, the stop block 30 is used to limit and protect the electrode pack. By setting an avoidance area 31 on the side of the stop block 30 facing the center of the boss 20, it is ensured that the corners of the electrode pack will not come into contact with the blister tray during the transfer process, thus avoiding damage to the corners of the electrode pack. By setting a flexible pad 40 in the central area of ​​the boss 20, the friction between the electrode pack and the blister tray can be increased, reducing the relative sliding distance of the electrode pack during transfer and reducing the risk of damage to the electrode pack. Considering that the electrode sheet on the tab side of the electrode pack generally has a thinning area at the edge and the diaphragm does not fit well with the electrode sheet, this utility model sets a strip groove 21 on the boss 20 to break the vacuum and prevent the diaphragm on the tab side from folding when the electrode pack is picked up.

[0031] See Figure 1 and Figure 2 The stop block 30 is an L-shaped, one-piece molded structure, and the clearance area 31 is located at the corner of the side of the stop block 30 facing the center of the boss 20. The clearance area 31 is a C-shaped hole. The stop block 30 adopts an integrated design, which is convenient for processing. By setting a C-shaped clearance hole at the inner corner of the stop block, the contact between the electrode assembly and the stop block can be avoided to the greatest extent.

[0032] There are four stops 30. The sidewall of the strip groove 21 is flush with the sidewall of the two stops 30 on the same side facing the center of the boss 20, and is connected to the two clearance areas 31 on the same side. The four stops 30 enclose the working area for placing the pole assembly, and the clearance area 31 corresponds to the top corner of the working area.

[0033] A blind hole 22 is provided at the center of the boss 20, and a flexible pad 40 is located outside the blind hole 22. By providing a blind hole 22 at the center of the boss 20, the resistance during electrode assembly removal and placement can be reduced, preventing damage to the electrode assembly. In this invention, the blind hole 22 is square. Multiple flexible pads 40 can be provided, and the thickness of the flexible pads 40 is 0.5mm-1mm. See also... Figure 2 In this embodiment, three flexible pads 40 are provided. Two flexible pads 40 are located on the outer sides of the two long sides of the blind hole 22, and one flexible pad 40 is located on the outer side of one short side of the blind hole 22. When the electrode assembly is placed on the blister tray, the electrode assembly contacts the upper surface of the boss 20. If the flexible pads 40 are not provided, the electrode assembly will experience greater relative sliding during rhythmic transport, increasing the risk of electrode assembly impact. This utility model increases the friction between the electrode assembly and the blister tray by providing flexible pads 40 on the contact surface between the electrode assembly and the blister tray, reducing the relative sliding distance during electrode assembly transport, thereby reducing the risk of electrode assembly impact.

[0034] The boss 20 is rectangular, and two short sides of the boss 20 are respectively provided with clearance grooves 23. In this embodiment, the clearance grooves 23 are located in the middle of the short sides. By setting the clearance grooves 23, operating space is reserved for the robot arm, which facilitates the robot arm to pick up and put down the electrode assembly during the transfer of the electrode assembly.

[0035] The base 10 is rectangular, and positioning posts 50 are connected to both sides of the base 10. In this embodiment, there are two positioning posts 50, located on the two long sides of the base 10. The two long sides of the boss 20 are respectively provided with grooves 24, and the positioning posts 50 are located in the grooves 24. In this embodiment, the grooves 24 are located in the middle of the long sides. By setting the positioning posts 50, it is easy to position the blister tray and the pallet, so that the electrode assembly can be accurately placed on the blister tray.

[0036] The base 10 has multiple fixing holes 11 around its perimeter. In this embodiment, the two long sides of the base 10 each have three fixing holes 11, and the two short sides each have two fixing holes 11. By providing fixing holes 11 on the base 10, it is easy to achieve a stable connection between the blister tray and the pallet.

[0037] Working Principle: In practical applications, when the battery electrode pack transfer blister tray of this utility model flows to the set work station, the position of the tray is locked by the positioning post 50. The robot arm grabs the electrode pack and places it in the working area surrounded by four blocks 30 on the blister tray through the avoidance groove 23. The blocks 30 limit and protect the electrode pack. By setting an avoidance area 31 on the side of the block 30 facing the center of the boss 20, it is ensured that the corners of the electrode pack cannot contact the block 30 during the transfer process, thus avoiding damage to the corners of the electrode pack. By setting a flexible pad 40 in the center area of ​​the boss 20, the friction between the electrode pack and the blister tray can be increased, reducing the relative sliding distance of the electrode pack during transfer and reducing the risk of damage to the electrode pack. When the battery electrode pack transfer blister tray of this utility model is used for electrode pack transfer, it can protect the corners of the electrode pack from damage.

[0038] Furthermore, when the robotic arm picks up the electrode assembly, a momentary vacuum environment is created beneath it. Without the groove 21, the separator and electrode sheet may not adhere well on the tab side due to the thinning of the electrode sheet, easily leading to separator folding or even electrode sheet leakage. This invention breaks the vacuum by setting the groove 21 on the protrusion 20. The groove 21 is directly opposite the edge of the electrode assembly on the tab side, which can prevent the separator on the tab side from folding when picking up the electrode assembly. The battery electrode assembly transfer blister tray of this invention can effectively improve the safety of cell production and ensure the high efficiency of battery production.

[0039] Example 2

[0040] The difference between this embodiment and Embodiment 1 is that the structure of the stop block 30 is different. See [link to Embodiment 1]. Figure 4In this embodiment, the stop block 30 includes a lateral limiting block 32 and a vertical limiting block 33. The lateral limiting block 32 and the vertical limiting block 33 are placed perpendicularly and do not contact each other. The clearance area 31 is located at the position opposite to the end of the lateral limiting block 32 and the end of the vertical limiting block 33. In this embodiment, both the lateral limiting block 32 and the vertical limiting block 33 are rectangular blocks. The side wall of the lateral limiting block 32 facing the center of the boss 20 is flush with the side wall of the strip groove 21, and the two ends of the strip groove 21 are connected to the clearance area 31. In this embodiment, the stop block 30 adopts the form of two limiting blocks, eliminating the need for separate processing of the clearance area, resulting in a simple and easy-to-process structure.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery electrode assembly transfer blister tray, characterized in that: It includes a base, a boss on the base, a stop on the boss, a clearance area on the side of the stop facing the center of the boss, a strip groove on the boss that communicates with the clearance area, and a flexible pad in the center area of ​​the boss.

2. The battery electrode assembly transfer blister tray according to claim 1, characterized in that: The stop block is L-shaped, and the clearance area is a C-shaped hole. The clearance area is located at the corner of the side of the stop block facing the center of the boss.

3. The battery electrode assembly transfer blister tray according to claim 1, characterized in that: The stop includes a lateral stop block and a vertical stop block. The lateral stop block and the vertical stop block are placed perpendicularly and do not contact each other. The clearance area is located at the position opposite to the end of the lateral stop block and the end of the vertical stop block.

4. The battery electrode assembly transfer blister tray according to claim 1, characterized in that: There are four blocks. The sidewall of the strip groove is flush with the sidewall of the two blocks on the same side facing the center of the boss, and is connected to the two clearance areas on the same side.

5. The battery electrode assembly transfer blister tray according to claim 1, characterized in that: Four blocks enclose the working area for placing the electrode assembly, and the clearance area corresponds to the top corner of the working area.

6. The battery electrode assembly transfer blister tray according to claim 1, characterized in that: A blind hole is provided at the center of the boss, and a flexible pad is located outside the blind hole.

7. The battery electrode assembly transfer blister tray according to claim 6, characterized in that: There are three flexible pads: two are located on the outside of the two long sides of the blind hole, and one is located on the outside of the short side of the blind hole; the thickness of the flexible pads is 0.5mm-1mm.

8. The battery electrode assembly transfer blister tray according to claim 1, characterized in that: The boss is rectangular, and clearance grooves are provided on the two short sides of the boss.

9. The battery electrode assembly transfer blister tray according to claim 8, characterized in that: The base has positioning posts on both sides, and the two long sides of the boss have grooves, with the positioning posts located in the grooves.

10. The battery electrode assembly transfer blister tray according to claim 1, characterized in that: The base has multiple mounting holes around its perimeter.

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