A tooling for testing the thrust of lithium battery top cover terminals

Abstract

This utility model discloses a lithium battery top cover terminal force testing fixture, relating to the field of battery fixture testing equipment. It includes a support base, an upper cover plate, and a top component. A support bottom plate is provided on the support base, and the support bottom plate is used for linear movement on the support base. The upper cover plate is disposed on the support bottom plate, and a clamping cavity for clamping and fixing the product is formed between the upper cover plate and the support bottom plate. The top component is positioned corresponding to the clamping cavity. The support base, upper cover plate, and top component can solve the problem of misalignment and inaccurate positioning during the installation of battery top cover terminals in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of battery tooling testing equipment, and in particular to a tooling for testing the thrust of the top cover terminal of a lithium battery. Background Technology

[0002] In the lithium battery manufacturing process, the battery top cover, as a core component for battery sealing, current conduction, and safety protection, directly determines the safety, reliability, and lifespan of the lithium battery. The terminals, as the key conductive structure connecting the battery top cover to the external circuitry, must withstand mechanical stress during assembly, use, and transportation. If the connection strength between the terminals and the top cover is insufficient or structural defects exist, breakage or loosening can easily occur under stress, leading to serious safety hazards such as battery leakage, short circuits, and even fires. Therefore, accurate testing of the thrust bearing capacity of the lithium battery top cover terminals is one of the core aspects of quality control before lithium batteries leave the factory.

[0003] Currently, the industry relies heavily on general-purpose thrust testing equipment for thrust testing of lithium battery top cover terminals. However, such equipment lacks specialized positioning and clamping fixtures adapted to battery top covers. During the testing process, if the battery top cover is not securely fixed, it is prone to displacement, shaking, or even flipping under the thrust. This not only leads to distorted test data but may also cause unexpected breakage of the terminal due to uneven stress on the top cover, resulting in misjudgment of product quality.

[0004] Meanwhile, traditional testing fixtures are mostly rigid support structures. When the thrust test head contacts the pole, there is a lack of an effective buffering mechanism, which can easily generate instantaneous impact force. This may damage the surface or internal connection structure of the pole, affecting the objectivity of the test results, and may also cause wear and tear on the testing equipment.

[0005] Furthermore, some companies use simple tooling to improve testing efficiency. However, such tooling is often rudimentary in structure, lacking standardized limit, positioning, and clamping designs, resulting in poor repeatability and consistency of test results, which cannot meet the high-quality control requirements of large-scale production. Therefore, developing a lithium battery top cover terminal force testing tooling with precise positioning, stable clamping, buffer protection functions, and strong adaptability has become a key requirement for solving current testing pain points and improving the quality and efficiency of lithium battery production. Utility Model Content

[0006] This invention provides a lithium battery top cover terminal thrust detection fixture, which can solve the problem of misalignment and inaccurate positioning of the battery top cover terminal in the prior art.

[0007] To solve the above problems, this utility model provides a lithium battery top cover terminal thrust testing fixture, comprising: A support base, on which a support bottom plate is provided, the support bottom plate being used for linear movement on the support base; An upper cover plate is disposed on the supporting base plate, and a clamping cavity for clamping and fixing products is formed between the upper cover plate and the supporting base plate; A top member is disposed on the support base, and the top member is positioned corresponding to the clamping cavity.

[0008] Preferably, the support base is provided with: Support plate; A support side plate is provided on the side of the support plate, and a limiting member is provided at one end of the support side plate. The support side plate cooperates with the limiting member to limit the support base plate.

[0009] Preferably, an elastic buffer device is provided between the support plate and the support base plate, and the elastic buffer device pushes the support base plate toward the limiting member to abut.

[0010] Preferably, a through hole is provided on the support base plate corresponding to the position of the top member, the top member is located in the through hole, and the top member supports the product through the through hole.

[0011] Preferably, a limiting groove is provided on the supporting base plate, and the through hole is located in the limiting groove, the limiting groove limiting the product; A support surface is provided around the periphery of the limiting groove, and the support surface is horizontally positioned.

[0012] Preferably, the upper cover plate forms an operating opening corresponding to the position of the limiting groove, and the operating opening extends through the upper and lower ends of the upper cover plate; The edge of the operating opening is positioned to correspond to the edge of the limiting groove, so that the upper cover plate covers the supporting surface, and the clamping cavity is formed between the upper cover plate and the supporting surface.

[0013] Preferably, a fixing member is provided on the supporting base plate, the fixing member is located at the top of the supporting base plate, and a first abutting surface is vertically provided on one side of the fixing member; The upper cover plate is provided with a second abutting surface at the position corresponding to the first abutting surface, and the upper cover plate abuts against one side of the fixing member through the first abutting surface and the second abutting surface.

[0014] Preferably, the limiting member limits the upper cover plate.

[0015] Preferably, the elastic buffer device is a spring or an air cushion, with one end of the spring or air cushion connected to the support plate and the other end connected to the support base plate.

[0016] Preferably, the height of the top member is less than the distance between the upper cover plate and the support plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In this application, a support base plate is placed on a support base, with the support base plate abutting against one side of the support base. The operator places the top cover of the battery to be tested onto the support base plate, aligning the position of the terminal post on the top cover with the position of the top component. The top cover is then covered by a top cover plate, which secures the top cover through the clamping cavity formed between the top cover plate and the support base plate. After completing the above basic operations, the testing fixture is placed on a thrust machine to measure the thrust of the terminal post. The thrust arm of the thrust machine presses down to make the terminal post of the top cover contact with the top component. Once a certain thrust is reached, the crack position of the terminal post on the top cover can be observed, effectively determining whether the product performance is qualified. This significantly reduces the testing error caused by product positioning deviation and improves the reliability of the testing results.

[0018] 2. By cooperating with the limiting groove on the support base plate and the support surface, the installation position of the battery top cover can be accurately positioned, ensuring a stable correspondence between the terminal post and the top component. At the same time, the clamping cavity formed by the top cover plate and the support surface can firmly fix the battery top cover, effectively avoiding deviations in the application of thrust caused by product offset or shaking during the testing process, and greatly improving the accuracy and reliability of the terminal post thrust test data.

[0019] 3. The top component directly contacts the pole post through the through hole of the support base plate. The thrust transmission path is clear and there is no redundant interference. It can truly reflect the thrust resistance performance of the pole post and provide a reliable basis for judging whether the product is qualified. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of a lithium battery top cover pole thrust detection tool according to an embodiment of the present invention; Figure 2 This is an exploded structural diagram of a lithium battery top cover terminal thrust detection tool according to an embodiment of the present invention; Figure 3 This is a side cross-sectional view of a lithium battery top cover pole thrust detection tool according to an embodiment of the present invention. Figure 4This is a schematic diagram of the assembly of the support base plate and the top cover plate in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures: 100, Support base; 110, Support plate; 120, Support side plate; 121, Slide groove; 130, Limiting component; 140, Elastic buffer device; 200, Support bottom plate; 210, Through hole; 220, Limiting groove; 230, Support surface; 240, Fixing component; 241, First abutment surface; 300, Top cover plate; 310, Clamping cavity; 320, Operating opening; 330, Second abutment surface; 400, Top component; 500, Battery top cover. Detailed Implementation

[0023] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0024] like Figures 1 to 4 As shown in the figure, the present invention provides a lithium battery top cover pole thrust testing fixture, including a support base 100 and an upper cover plate 300. A support base plate 200 is provided on the support base 100. The support base plate 200 performs vertical linear movement on the support base 100. The upper cover plate 300 can be installed on the support base plate 200 to support the battery top cover 500 product.

[0025] In this embodiment of the application, the battery top cover 500 product is provided with a terminal post, which needs to be tested to check whether the terminal post is broken and to determine whether the product is qualified.

[0026] To verify this content, the support base 100 in this application includes a support plate 110 and two support side plates 120. Two support side plates 120 are provided, respectively installed on both sides of the support plate 110. The two ends of the support base plate 200 are fixedly installed on the support side plates 120, forming a groove 121 between the two support side plates 120. This groove 121 allows the support base plate 200 to slide and be positioned. A limiting member 130 is provided at the end of the support side plate 120 away from the support plate 110. The limiting member 130 is positioned corresponding to the groove 121, such that the support base plate 200 within the groove 121 is located between the support plate 110 and the limiting member 130, thus limiting the position of the support base plate 200.

[0027] In this embodiment, the limiting member 130 is a long strip structure. The limiting member 130 is fixedly installed at the top position of the supporting side plate 120 along the direction of the supporting side plate 120. In order to effectively support the supporting base plate 200, an elastic buffer device 140 is provided on the supporting base 100. Multiple elastic buffer devices 140 are provided on the supporting plate 110. The multiple elastic buffer devices 140 are arranged rectangularly at equal intervals on the supporting plate 110. One end of the elastic buffer device 140 is connected to the supporting plate 110, and the other end of the elastic buffer device 140 abuts against the supporting base plate 200, so that the supporting base plate 200 is supported by the elastic buffer member. The elastic buffer device 140 can push the supporting base plate 200 to move, so that the supporting base plate 200 can abut against the limiting member 130, preventing the supporting base plate 200 from detaching from the supporting base 100.

[0028] In this embodiment, the elastic buffer device 140 is configured as a spring or an air cushion.

[0029] In order to abut the terminal post on the battery top cover 500, a through hole 210 is opened on the support plate 110 at the position corresponding to the top member 400. The top member 400 is a columnar structure, and one end of the top member 400 passes through the through hole 210 to contact the terminal post of the battery top cover 500, so as to facilitate the top member 400 to squeeze and measure the terminal post on the battery top cover 500.

[0030] To facilitate accurate alignment of the terminals on the battery top cover 500 with the top member 400, a limiting groove 220 is provided on the support base plate 200. This limiting groove 220 is positioned corresponding to the through hole 210, and its size corresponds to the size of the battery top cover 500. This allows the limiting groove 220 to limit the battery top cover 500, preventing it from shifting on the support base plate 200. Simultaneously, the through hole 210, located within the limiting groove 220, effectively aligns the terminals on the battery top cover 500 with the top member 400 within the through hole 210. This facilitates support of the battery terminals by the top member 400 and prevents interference with the force detection of the terminals by the top member 400.

[0031] Meanwhile, in this embodiment, a support surface 230 is also provided. The support surface 230 is located around the limiting groove 220 and is horizontally positioned on the support plate 110. The support surface 230 can effectively limit the position of the battery top cover 500 and prevent the position of the battery top cover 500 from shifting.

[0032] On the support base plate 200 with the support surface 230 structure, the size of the limiting groove 220 should be smaller than the area of ​​the battery top cover 500, and the area enclosed by its support surface 230 should correspond to the area of ​​the battery top cover 500.

[0033] Meanwhile, in this embodiment, the upper cover plate 300 has an operation opening 320 at the position corresponding to the limiting groove 220. The operation opening 320 penetrates the upper and lower ends of the upper cover plate 300, and the edge of the operation opening 320 is correspondingly set to the edge of the limiting groove 220, so that the upper cover plate 300 can cover the support surface 230 through the operation opening 320. Therefore, a clamping cavity 310 is formed between the upper cover plate 300 and the support surface 230. The clamping cavity 310 can clamp and fix the battery top cover 500 product, and prevent the battery top cover 500 product from shaking during the thrust test, which would affect the test results.

[0034] A fixing member 240 is also provided on the supporting base plate 200. The fixing member 240 is located on both sides of the top position of the supporting base plate 200. A first abutting surface 241 is vertically provided on one side of the fixing member 240. A second abutting surface 330 is provided on the upper cover plate 300 corresponding to the position of the first abutting surface 241. The upper cover plate 300 abuts against one side of the fixing member 240 through the first abutting surface 241 and the second abutting surface 330. The setting of the first abutting surface 241 and the second abutting surface 330 can fix the upper cover plate 300 and prevent the upper cover plate 300 from shifting during the clamping and fixing process, which would affect the clamping effect. At the same time, the operation opening 320 on the upper cover plate 300 is set to correspond to the position of the battery top cover 500.

[0035] In this embodiment of the application, since the upper cover plate 300 is located above the support base plate 200, the limiting member 130 located above the support side plate 120 limits the upper cover plate 300.

[0036] In the above, the height of the upper cover plate 300 is greater than or equal to the height of the fixing member 240, and the height of the top member 400 is less than the distance between the upper cover plate 300 and the support plate 110.

[0037] In summary, when this utility model inspects the battery top cover 500, the specific steps are as follows: The support base plate 200 is placed into the slide groove 121 above the support plate 110, so that the through hole 210 on the support base plate 200 corresponds to the position of the top member 400. The top member 400 passes through the through hole 210, and the support base plate 200 abuts against one side of the limiting member 130 in the slide groove 121 through the elastic buffer device 140. The battery top cover 500 is placed on the support surface 230 on the limiting groove 220 on the support base plate 200, so that the position of the terminal post on the battery top cover 500 corresponds to the position of the top member 400. Finally, the battery top cover 500 is covered by the upper cover plate 300, so as to fix the battery top cover 500 through the formed clamping cavity 310. After completing the above basic operations, the testing fixture is placed on the thrust machine to measure the pole thrust. The thrust arm of the thrust machine presses down on the pole of the battery top cover 500 to make contact with the top part 400. After reaching a certain thrust, the crack position of the pole on the battery top cover 500 can be observed, which can effectively determine whether the product performance is qualified.

[0038] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A lithium battery top cover post thrust detection tool, characterized in that, include: A support base (100) is provided with a support bottom plate (200), which is used for linear movement on the support base (100); An upper cover plate (300) is disposed on the supporting base plate (200), and a clamping cavity (310) for clamping and fixing the product is formed between the upper cover plate (300) and the supporting base plate (200). A top piece (400) is disposed on the support base (100), and the top piece (400) is positioned corresponding to the clamping cavity (310).

2. The lithium battery top cover post thrust detection tool of claim 1, wherein, The support base (100) is provided with: Support plate (110); A support side plate (120) is provided on the side of the support plate (110). A limiting member (130) is provided at one end of the support side plate (120). The support side plate (120) cooperates with the limiting member (130) to limit the support base plate (200).

3. The lithium battery top cover terminal thrust testing fixture according to claim 2, characterized in that, An elastic buffer device (140) is provided between the support plate (110) and the support base plate (200), and the elastic buffer device (140) pushes the support base plate (200) to abut against the limiting member (130).

4. The lithium battery top cover terminal thrust testing fixture according to claim 1, characterized in that, The supporting base plate (200) has a through hole (210) at the position corresponding to the top member (400). The top member (400) is located in the through hole (210) and supports the product through the through hole (210).

5. The lithium battery top cover terminal thrust testing fixture according to claim 4, characterized in that, The supporting base plate (200) is provided with a limiting groove (220), and the through hole (210) is located in the limiting groove (220). The limiting groove (220) limits the product. A support surface (230) is provided around the periphery of the limiting groove (220), and the support surface (230) is horizontally arranged.

6. The lithium battery top cover terminal thrust testing fixture according to claim 5, characterized in that, The upper cover plate (300) has an operation opening (320) at the position corresponding to the limiting groove (220), and the operation opening (320) passes through the upper and lower ends of the upper cover plate (300); The edge of the operating opening (320) is positioned corresponding to the edge of the limiting groove (220), so that the upper cover plate (300) covers the support surface (230), and the clamping cavity (310) is formed between the upper cover plate (300) and the support surface (230).

7. The lithium battery top cover terminal thrust testing fixture according to claim 6, characterized in that, A fastener (240) is provided on the supporting base plate (200). The fastener (240) is located at the top of the supporting base plate (200). A first abutting surface (241) is vertically provided on one side of the fastener (240). The upper cover plate (300) is provided with a second abutment surface (330) corresponding to the position of the first abutment surface (241), and the upper cover plate (300) abuts against one side of the fastener (240) through the first abutment surface (241) and the second abutment surface (330).

8. The lithium battery top cover terminal thrust testing fixture according to claim 3, characterized in that, The limiting member (130) limits the upper cover plate (300).

9. The lithium battery top cover terminal thrust testing fixture according to claim 3, characterized in that, The elastic buffer device (140) is a spring or an air cushion, with one end of the spring or air cushion connected to the support plate (110) and the other end connected to the support base plate (200).

10. The lithium battery top cover terminal thrust testing fixture according to claim 2, characterized in that, The height of the top piece (400) is less than the distance between the upper cover plate (300) and the support plate (110).

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