Cylindrical battery cell clamping tray

Abstract

The utility model relates to the technical field of electric core tray, especially to a cylindrical electric core clamping tray, including tray body, a plurality of accommodation holes for accommodating electric core are seted up on the tray body, detachable clamping jaw piece is arranged in the accommodation hole, the clamping jaw piece can be along the radial direction of the accommodation hole and inwardly clamped the circumferential surface of the electric core, the utility model discloses a cylindrical electric core clamping tray, the technical scheme provided by the utility model can be applicable to cylindrical electric core, need not to change the structural characteristics of electric core, also need not to adopt the spring structure of complicated framework, simple structure, low production cost, and the electric core clamping is stable.

Description

Technical Field

[0001] This utility model relates to the field of battery cell tray technology, and in particular to a cylindrical battery cell clamping tray. Background Technology

[0002] In the production process of cylindrical battery cells, such as in the formation process, it is necessary to use the positioning pit of the tray to fix the battery cell in place. Due to its cylindrical shape, the positioning pit cannot prevent the battery cell from rotating.

[0003] Therefore, the structural features of the battery cell are forced to be made into a symmetrical shape with the axis center rotating around; or for processing steps that require directional positioning, the battery cell is clamped on the tray by a compression spring mode. The compression spring mode has a complex structure and poor applicability. Utility Model Content

[0004] The purpose of this invention is to provide a cylindrical battery cell clamping tray. The technical solution provided by this invention can be applied to cylindrical battery cells without changing the structural features of the battery cells or using a complex compression spring structure. The structure is simple, the manufacturing cost is low, and the battery cells are clamped securely.

[0005] To solve the above-mentioned technical problems, this utility model provides a cylindrical battery cell clamping tray, including a tray body; a plurality of receiving holes for accommodating battery cells are formed on the tray body; a clamping claw is detachably disposed in the receiving hole; the clamping claw can clamp the circumferential surface of the battery cell radially inward along the receiving hole.

[0006] Preferably, the gripper includes a plurality of elastic grippers; the elastic grippers have a gripping boss formed on the side facing the axis of the receiving hole for abutting against the battery cell; the diameter of the circle formed by the gripping bosses of all the elastic grippers is smaller than the diameter of the battery cell.

[0007] Preferably, the gripper further includes an annular fixing member; the diameter of the fixing member is not less than the diameter of the battery cell; the elastic gripper extends axially along the fixing member and is formed at the edge of the fixing member.

[0008] Preferably, a slot is provided on the inner sidewall of the receiving hole for the fastener to be inserted into, and the fastener is coaxially inserted into the slot.

[0009] Preferably, a plurality of raised ridges are formed axially on the inner sidewall of the receiving hole; the slot is formed on the raised ridges.

[0010] Preferably, a clearance space is formed on the inner wall of the receiving hole at a position corresponding to the elastic gripper, allowing the elastic gripper to deform.

[0011] Preferably, at least two limiting bosses are provided at the edge of the fastener; the two limiting bosses are respectively located on both sides of one of the protruding ridges.

[0012] Preferably, the fastener has a crack and is in a non-closed state.

[0013] Preferably, the side of the clamping protrusion near the direction of insertion of the battery cell is chamfered or rounded.

[0014] Preferably, the elastic gripper is located on the edge of the fixing member facing or away from the insertion direction of the battery cell.

[0015] Compared with the prior art, this utility model has a clamping component in the receiving hole on the tray. The clamping component presses the battery cell body together and the elastic restoring force of the clamping component keeps the battery cell in a clamped state. The clamping friction force can effectively prevent the battery cell from rotating. It can be applied to cylindrical battery cells without changing the structural features of the battery cell. The clamping component has a simple structure and does not require a complex compression spring structure. It can be made of injection molded or 3D printed plastic parts, which is flexible to manufacture, low in manufacturing cost, and easy to use. Attached Figure Description

[0016] Figure 1 This is a top view of the cylindrical cell clamping tray according to an embodiment of this application;

[0017] Figure 2 This is a cross-sectional view of the cylindrical cell clamping tray portion of an embodiment of this application;

[0018] Figure 3 Examples of this application Figure 2 Enlarged view of a portion of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the gripper structure in the cylindrical cell clamping tray of this application embodiment. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To meet the requirements of the battery formation process, the battery cells need to be clamped securely and cannot rotate. Currently, the clamping mechanism clamps the battery cells on the tray using a spring-loaded method. However, the spring-loaded method has a complex structure and poor applicability.

[0022] Please see Figures 1-4To address the aforementioned technical problems, this embodiment provides a cylindrical battery cell clamping tray, including a tray body with a plurality of receiving holes 10 for accommodating the battery cells. The battery cells are cylindrical, and the corresponding receiving holes 10 can be cylindrical or other regular or irregular cylindrical shapes, as long as the cylindrical battery cell can be inserted along the axis of the receiving hole 10. Therefore, the diameter of the receiving hole 10 must be larger than the diameter of the battery cell.

[0023] In this embodiment, a gripper 20 is detachably provided within the receiving hole 10. This gripper 20 can clamp the circumferential surface of the battery cell radially inward along the receiving hole 10. Therefore, this embodiment utilizes the elastic deformation of the gripper 20 to clamp the battery cell, achieving the clamping purpose without complex structural features. The gripper 20 is made of non-metallic plastic material and can be manufactured using processes such as injection molding and 3D printing.

[0024] Specifically, the gripper 20 includes several elastic grippers 21. Each elastic gripper 21 has a clamping boss 22 formed on the side facing the axis of the receiving hole 10 for abutting against the battery cell. The clamping boss 22 abuts against the battery cell, completing the clamping action. To achieve uniform clamping force, this embodiment uses three or more elastic grippers 21, evenly distributed around the perimeter of the receiving hole 10. This ensures even clamping of the battery cell, preventing uneven clamping force from damaging the battery cell or causing unstable clamping that affects the processing steps. This embodiment uses four elastic grippers 21 as an example for detailed explanation.

[0025] To achieve proper clamping of the battery cell, the diameter of the circle formed by the clamping protrusions 22 of all the elastic grippers 21 is no larger than the diameter of the battery cell. When the battery cell is inserted into the receiving hole 10, the battery cell compresses the clamping protrusions 22, and the clamping protrusions 22 and the outer side of the battery cell are interference-fitted. Under their own deformation, they can be firmly clamped to the outside of the battery cell.

[0026] During the insertion of the battery cell, the battery cell abuts against the clamping boss 22. By squeezing the clamping boss 22, the clamping boss 22 is deformed. In order to make the battery cell insertion smoother, this embodiment has a chamfered or rounded corner on the side of the clamping boss 22 near the battery cell insertion direction.

[0027] To achieve the installation and fixation of the elastic gripper 21, the gripper component 20 in this embodiment also includes an annular fixing component 23. Similar to the receiving hole 10, the diameter of the fixing component 23 must be no less than the diameter of the battery cell to ensure smooth insertion of the battery cell. The elastic gripper 21 extends axially along the edge of the fixing component 23. Specifically, the elastic gripper 21 is located on the edge of the fixing component 23 facing or away from the direction of battery cell insertion, that is, in the position where the opening of the receiving hole 10 faces upwards. The elastic gripper 21 can be located above or below the fixing component 23.

[0028] The function of the fastener 23 is not only to install and fix the elastic gripper 21, but also to detachably fix it within the receiving hole 10. Specifically, a slot 11 is provided on the inner wall of the receiving hole 10 for the fastener 23 to be coaxially engaged with the receiving hole 10. The engagement of the slot 11 with the fastener 23 allows the gripper 20 to be detached. If a gripper 20 is damaged after prolonged use, it can be directly removed and replaced with a new one, making it convenient to use.

[0029] To further improve the ease of disassembly, this embodiment has several raised ridges 12 formed axially on the inner sidewall of the receiving hole 10, and slots 11 are formed on the raised ridges 12. The fixing member 23 can be directly inserted into the slots 11 on the raised ridges 12 to fix the gripper 20.

[0030] Furthermore, a crack can be made in the fastener 23 so that the fastener 23 is in a non-closed state. During installation or disassembly, the fastener 23 can be staggered along both sides of the crack to reduce its diameter, making it easier to be inserted into or removed from the slot 11.

[0031] After the installation of the fastener 23 and the receiving hole 10 is completed, since the fastener 23 is annular, it will move within the slot 11. Therefore, in this embodiment, at least two limiting bosses 24 are provided at the edge of the fastener 23, and the two limiting bosses 24 are respectively located on both sides of one of the protruding ridges 12. The two limiting bosses 24 can be precisely locked on both sides of the protruding ridge 12, thereby restricting the fastener 23 from moving back and forth within the slot 11.

[0032] Since this embodiment utilizes the elastic deformation of the elastic claw 21 to achieve clamping during the clamping process, this embodiment also forms a clearance position 13 on the inner wall of the accommodating hole 10 at a position corresponding to the elastic claw 21 to allow the elastic claw 21 to deform.

[0033] In summary, this embodiment is applied to the cylindrical battery testing equipment in the lithium battery formation testing production line of the new energy lithium battery industry. It is mainly used for clamping cylindrical battery cells. By setting a clamping claw 20 in the receiving hole 10 on the tray, the clamping claw presses the battery cell body together. The elastic restoring force of the clamping claw 20 keeps the battery cell in a clamped state. The clamping friction force can effectively prevent the battery cell from rotating. It can be applied to cylindrical battery cells without changing the structural features of the battery cell. The clamping claw 20 has a simple structure and does not require a complex compression spring structure. It can be made of injection molded or 3D printed plastic parts, which is flexible to manufacture, has low manufacturing cost, and is easy to use.

[0034] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cylindrical battery cell clamping tray, characterized in that: It includes a tray body; a plurality of receiving holes for accommodating battery cells are provided on the tray body; a clamping claw is detachably provided in the receiving hole; the clamping claw can clamp the circumferential surface of the battery cell radially inward along the receiving hole.

2. The cylindrical cell clamping tray according to claim 1, characterized in that: The gripper includes a plurality of elastic grippers; each elastic gripper has a gripping boss on the side facing the axis of the receiving hole for abutting against the battery cell; the diameter of the circle formed by the gripping bosses of all the elastic grippers is smaller than the diameter of the battery cell.

3. The cylindrical cell clamping tray according to claim 2, characterized in that: The gripper also includes an annular fixing member; the diameter of the fixing member is not less than the diameter of the battery cell; the elastic gripper extends axially along the fixing member and is formed at the edge of the fixing member.

4. The cylindrical cell clamping tray according to claim 3, characterized in that: A slot is provided on the inner sidewall of the receiving hole for the fastener to be inserted into, and the fastener is coaxially inserted into the slot.

5. The cylindrical cell clamping tray according to claim 4, characterized in that: Several raised ridges are formed axially on the inner sidewall of the receiving hole; the slot is formed on the raised ridges.

6. The cylindrical cell clamping tray according to claim 5, characterized in that: An clearance space is formed on the inner wall of the receiving hole at a position corresponding to the elastic gripper, allowing the elastic gripper to deform.

7. The cylindrical cell clamping tray according to claim 6, characterized in that: At least two limiting bosses are provided at the edge of the fastener; the two limiting bosses are respectively located on both sides of one of the protruding ridges.

8. The cylindrical cell clamping tray according to claim 7, characterized in that: The fastener has a crack and is not closed.

9. The cylindrical cell clamping tray according to claim 8, characterized in that: The side of the clamping protrusion near the direction of cell insertion is chamfered or rounded.

10. The cylindrical cell clamping tray according to claim 9, characterized in that: The elastic gripper is located on the edge of the fixing member facing or away from the direction of cell insertion.

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