Tool for bending test of battery cell
By designing a bending test tool for lithium-ion battery cells, the problem of difficulty in achieving 90° bending test in the existing technology is solved, and the safe and effective testing of the battery cells is achieved, and it is suitable for battery cells of different sizes.
Patent Information
- Application Number
- CN202420999817.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The prior art is difficult to achieve 90° bending test of lithium-ion cells, and the lack of special safety testing equipment, resulting in small test frequency and small demand, and purchasing new equipment requires cost.
A tool for cell bending testing is designed, including a block, a base, a suspender and a plate. The battery cell is prevented from being damaged by the upper and lower chamfers, and adapted to different size cells through screw fixing and flexible adjustment of height blocks.
An effective method for 90° bending test of lithium-ion cells is realized. The tooling is simple and easy to process. It can be used for most extrusion equipment. It can adapt to battery cells of different thickness, length and width, and complete the test without damaging the battery cells.
Smart Images
Figure CN222618418U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lithium ion battery manufacturing, and in particular relates to a tooling for a battery core bending test. Background Art
[0002] As the application scope of polymer soft-pack lithium-ion batteries is gradually promoted, the safety performance of the battery cells has gradually attracted the attention of major developers, which requires a variety of safety tests to be carried out after the battery cells are produced to ensure the safety of the battery cells in the client's use. These tests often exaggerate the abuse of the battery cells in order to improve the performance of the battery cells and eliminate safety hazards in advance.
[0003] Among the many safety testing items for polymer soft-pack lithium-ion batteries, the 90° bend test required by some customers is difficult to achieve, and there is currently no special safety equipment for this test. The frequency of this test is low, the demand for testing is not high, and purchasing new equipment also costs money. Utility Model Content
[0004] The utility model aims to provide a tool for a battery core bending test to solve the problems existing in the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tooling for battery cell bending test, comprising a pressing block and a base located below the pressing block, the edge of the pressing block is provided with an upper chamfer, the edge of the base is provided with a lower chamfer, the upper chamfer and the lower chamfer are staggered relative to each other up and down, and a pressing plate for fixing the battery cell is installed on the base.
[0006] Preferably, both ends of the pressing plate are fixed to the base by bolts.
[0007] Preferably, the base is fixed on the extrusion platform.
[0008] Preferably, a height block is provided between the base and the extrusion platform.
[0009] Preferably, the top of the pressing block is fixed below the hanging plate.
[0010] Preferably, the hanging plate is convex in shape.
[0011] Preferably, the pressing block is fixed below the hanging plate by screws.
[0012] Preferably, the pressing block is a rectangular parallelepiped structure.
[0013] Preferably, the base is a rectangular parallelepiped structure.
[0014] Preferably, the height block area is the same as the base area.
[0015] The beneficial effects of the utility model are as follows: the utility model provides an effective test tool for realizing a 90° bending test of a lithium-ion battery cell. The tool is simple and easy to process, can be adapted for modification in most extrusion equipment, has flexible size adjustment, and can achieve a 90° bending effect for batteries of different thicknesses, lengths, and widths. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional diagram of the utility model;
[0017] Figure 2 It is a stereogram of the middle pressure block of the utility model. DETAILED DESCRIPTION
[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.
[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0020] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fixed connection" and "fixed 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood through specific circumstances. The specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0021] like Figure 1-2 As shown, a tool for a battery cell bending test includes a hanging plate 1, a pressing block 2, a pressing plate 3 and a base 4. Among them,
[0022] The hanging plate 1 and the pressing block 2 form a structure that can synchronously press and bend the upper part of the battery cell downward. The hanging plate 1 is a common hanging plate in the battery cell extrusion test equipment. Its function is to transmit the pressure set by the extrusion equipment to the top of the extruded object, which is convex. The pressing block 2 can be fixed under the hanging plate 1 by screws 2-2 to transmit the extrusion force of the equipment to the upper part of the battery cell; the edge of the pressing block 2 contacting the battery cell has an upper chamfer 2-1 to prevent the aluminum plastic shell of the battery cell from being crushed and the force is evenly distributed.
[0023] The pressing plate 3 and the base 4 are used to clamp the lower part of the battery cell. The base 4 has a certain height and can be inserted above the extrusion platform 5. The pressing plate 3 can compact the battery cell onto the base 4, and fix the lower part of the battery cell with the first screw 3-1. The base 4 is fixed on the extrusion platform 5 by the second screw 4-1, and can be flexibly moved in the left and right directions, and cooperate with the pressing block 2 to adapt to different battery cell thicknesses. The edges of the base 4 have a lower chamfer 4-2 to prevent the aluminum-plastic shell of the battery cell from being crushed and to ensure uniform force. A height block 4-3 is provided between the base and the extrusion platform to flexibly adjust the overall height of the base 4 to meet the bending requirements of batteries of different sizes.
[0024] The extrusion platform 5 is a common extrusion platform in the battery cell extrusion test equipment and is fixed.
[0025] When in use, the battery cell is pressed onto the base through the pressing plate, and the two sides of the pressing plate are tightened by the first screws. The upper part of the extrusion platform drives the pressing block to move downward, and the pressing block moves downward, gradually pressing down one side of the battery cell. Since a part of the battery cell is fixed to the base by the pressing plate, the part in contact with the pressing block will bend downward. Under the action of the upper chamfer and the lower chamfer, the battery cell is gradually bent 90 degrees without damaging the battery cell, thereby completing the test.
[0026] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.
Claims
1. A tool for a battery cell bending test, characterized in that: It comprises a pressing block and a base located below the pressing block, wherein the edge of the pressing block is provided with an upper chamfer, the edge of the base is provided with a lower chamfer, the upper chamfer and the lower chamfer are relatively staggered up and down, and a pressing plate for fixing the battery core is installed on the base.
2. The tooling for battery cell bending test according to claim 1, characterized in that: The two ends of the pressing plate are fixed to the base by bolts.
3. The tooling for battery cell bending test according to claim 2, characterized in that: The base is fixed on the extrusion platform.
4. The tooling for battery cell bending test according to claim 3, characterized in that: A height block is arranged between the base and the extrusion platform.
5. The tooling for battery cell bending test according to claim 1, characterized in that: The top of the pressing block is fixed below the hanging plate.
6. The tooling for battery cell bending test according to claim 5, characterized in that: The hanging plate is convex.
7. The tooling for battery cell bending test according to claim 5, characterized in that: The pressing block is fixed below the hanging plate by screws.
8. The tooling for battery cell bending test according to claim 1, characterized in that: The pressing block is a rectangular parallelepiped structure.
9. The tooling for battery cell bending test according to claim 1, characterized in that: The base is a rectangular parallelepiped structure.
10. The tooling for battery cell bending test according to claim 4, characterized in that: The height block area is the same as the base area.