Lithium battery extrusion and puncture comprehensive test device

Abstract

The utility model relates to the technical field of lithium battery testing equipment, in particular to a comprehensive extruding and puncturing testing device for a lithium battery. According to the technical scheme, the device comprises a test base station and a support assembly installed above the test base station, and the test base station and the support assembly are each provided with an extrusion assembly used for extruding and puncturing a lithium battery; the support assembly comprises a supporting column fixedly installed on the top of the testing base table, a guide groove is formed in the outer side of the supporting column in the height direction of the supporting column, and a protection assembly is arranged in the guide groove in a sliding mode. The protection assembly comprises a guide block arranged in the guide groove in a sliding mode, one end of the guide block is connected with a protection cover, and a driving assembly used for driving the protection cover to ascend and descend is arranged on one side of the protection cover. The lithium battery lifting protection device is novel and compact in structure and diversified in function, automatic lifting protection of the lithium battery is achieved, meanwhile, fire extinguishing and smoke treatment are conducted on the exploded lithium battery, and the testing safety is further improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery testing equipment technology, and in particular to a comprehensive testing device for lithium battery compression and puncture. Background Technology

[0002] When lithium batteries are subjected to compression or puncture, internal components such as the positive and negative electrode plates and the separator may shift or break. For example, when the compression pressure reaches a certain level, the electrode plates may come into contact with each other, or a sharp object may directly penetrate the separator during puncture, causing a short circuit between the positive and negative electrodes. Combining compression and puncture testing can simulate these extreme conditions and detect whether a short circuit will occur inside the battery. Once a short circuit occurs, a large amount of heat will be generated instantly inside the battery, triggering a series of thermal runaway reactions. This test can detect potential short circuit hazards that may occur when the battery is subjected to mechanical abuse, thereby assessing the battery's safety. In the published patent document CN215338847U, an improved lithium battery module compression testing device is disclosed. This design uses a placement groove to position the lithium battery, preventing displacement during compression and puncture. Combined with a pressure plate to compress the lithium battery module from all directions, it improves the testing effect. The above devices cannot protect against crushing and puncture during use, and lithium batteries are prone to explosion during testing. Without protection, the safety of the test cannot be guaranteed. Therefore, this application proposes a device for automatic protection during the comprehensive crushing and puncture test of lithium batteries. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a device for automatic protection during comprehensive testing of lithium battery compression and puncture.

[0004] The technical solution of this utility model is: a lithium battery extrusion and puncture comprehensive testing device, including a test base and a support assembly installed on the test base, wherein extrusion components for lithium battery extrusion and puncture are installed on both the test base and the support assembly.

[0005] The support assembly includes a support column fixedly installed on the top of the test base, and a guide groove is formed on the outer side of the support column along its height direction. A protective component is slidably disposed in the guide groove.

[0006] The protective component includes a guide block slidably disposed in a guide groove, one end of the guide block being connected to a protective cover, and a drive component for driving the protective cover to rise and fall is disposed on one side of the protective cover. The drive component includes a gear rack fixedly connected to the outer wall of the protective cover and a gear installed in the test base and meshing with the gear rack.

[0007] Optionally, the extrusion assembly includes miniature cylinders mounted around the top of the test base, with the output end of each set of miniature cylinders connected to a side pressure plate, and also includes a lower pressure plate mounted directly above the test base.

[0008] Optionally, the bracket assembly includes a mounting plate fixedly connected above multiple sets of pillars, the mounting plate having multiple scattering holes, and a drive cylinder located at the bottom of the mounting plate connected to the top of the lower pressure plate.

[0009] Optionally, both the guide groove and the guide block are "T" shaped structures;

[0010] The bottom of the protective cover is also provided with a slot, the inner diameter of which is larger than the outer diameter of the micro cylinder, and the micro cylinder is locked in the slot.

[0011] Optionally, a fire extinguisher assembly is also installed on the top of the protective cover, and a smoke sensor is provided on one side of the fire extinguisher assembly located on the inner wall of the top of the protective cover.

[0012] Optionally, an air purifier assembly is installed on the side wall of the protective cover.

[0013] Optionally, the upper surface of the test base is provided with a placement groove for placing the lithium battery, and the test base is provided with a mounting cavity, in which the gear is located.

[0014] Optionally, a rotating shaft is fixedly installed through the inner ring of the gear, and a drive motor is fixedly connected to one end of the rotating shaft. The drive motor is fixedly installed to one side of the inner wall of the mounting cavity.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] This utility model limits the position of the lithium battery by setting the placement slot, so as to achieve stable crushing and puncture detection. The fire extinguisher assembly and the scattering holes of the mounting plate can quickly extinguish the crushed and exploded lithium battery to avoid fire. At the same time, the purifier assembly can treat the emitted toxic gases and achieve harmless smoke emission.

[0017] Furthermore, the protective components are automatically raised and lowered by setting the drive components, which facilitates the placement of lithium batteries and provides protection during testing, improves the safety of crush and puncture detection, and thus enhances the safety of the test.

[0018] In summary, this utility model has a novel and compact structure and multiple functions, realizing automatic lifting and protection of lithium batteries, while also extinguishing fires and treating smoke from exploding lithium batteries, further improving the safety of testing. Attached Figure Description

[0019] Figure 1A front view schematic diagram of this utility model is provided;

[0020] Figure 2 This is a partial structural schematic diagram of the present invention;

[0021] Figure 3 This is a bottom view of the heavy-duty protective component of this utility model;

[0022] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure.

[0023] Figure label:

[0024] 1. Test base; 11. Miniature cylinder; 12. Side pressure plate; 13. Mounting cavity; 14. Placement slot;

[0025] 2. Bracket assembly; 21. Support column; 22. Mounting plate; 23. Lower pressure plate; 24. Guide groove;

[0026] 3. Protective components; 31. Protective cover; 32. Slot; 33. Guide block;

[0027] 4. Fire extinguisher components;

[0028] 5. Air purifier components;

[0029] 6. Drive components; 61. Drive motor; 62. Gear; 63. Gear rack. Detailed Implementation

[0030] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0031] The components of the embodiments of this disclosure, which are typically described and shown in the accompanying drawings, can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of embodiments of this disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure.

[0032] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0033] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0035] Example 1

[0036] like Figures 1-4 As shown, the present invention proposes a comprehensive lithium battery compression and puncture testing device, including a test base 1 and a support assembly 2 installed above the test base 1. Both the test base 1 and the support assembly 2 are equipped with compression components for lithium battery compression and puncture. The compression components include miniature cylinders 11 installed around the top of the test base 1, with the output end of each miniature cylinder 11 connected to a side pressure plate 12. It also includes a lower pressure plate 23 installed directly above the test base 1, with a drive cylinder connected to the top of the lower pressure plate 23 at the bottom of the mounting plate 22. The compression components enable comprehensive compression and puncture detection of the lithium battery body.

[0037] Reference Figure 2 and Figure 3 As shown, the support assembly 2 includes a support column 21 fixedly installed on the top of the test base 1. The support assembly 2 includes a mounting plate 22 fixedly connected above multiple sets of support columns 21. The mounting plate 22 has multiple scattering holes, which are used to extinguish the fire or smoke generated by the explosion of the crushed lithium battery. A guide groove 24 is provided on the outer side of the support column 21 along its height direction. A protective component 3 is slidably installed in the guide groove 24. The protective component 3 includes a guide block 33 slidably installed in the guide groove 24. Both the guide groove 24 and the guide block 33 are "T" shaped structures. The guide block 33 and the guide groove 24 are used to stably push or pull the protective cover 31 to rise and fall. A slot 32 is also provided at the bottom of the protective cover 31. The inner diameter of the slot 32 is larger than the outer diameter of the micro cylinder 11. The micro cylinder 11 is locked in the slot 32.

[0038] In this embodiment, the entire support assembly 2 is covered by the protective component 3, thereby achieving comprehensive protection during lithium battery crushing detection. The protective component 3 is stably raised and lowered by the guide groove 24 and guide block 33. In combination with the material of the protective cover 31, in this embodiment, the protective cover 31 is made of a thicker and more heat-resistant material, such as high-strength alloy steel, to manufacture an explosion-proof shell. At the same time, a fireproof and explosion-proof isolation layer, such as ceramic fiber heat insulation material, is set inside the explosion-proof shell to achieve efficient protection and improve the safety of lithium battery testing.

[0039] Example 2

[0040] like Figure 1-4 As shown, based on Embodiment 1, a fire extinguisher assembly 4 is also installed on the top of the protective cover 31. The fire extinguisher is a dry powder fire extinguisher. A smoke sensor is installed on one side of the fire extinguisher assembly 4, located on the inner wall of the top of the protective cover 31. A purifier assembly 5 is installed on the side wall of the protective cover 31. The smoke sensor detects the condition of the lithium battery in the event of an explosion or the generation of smoke, and activates the fire extinguisher assembly 4 and the purifier assembly 5. The purifier is a combined purifier, which uses a combination of a catalytic combustion purifier and an activated carbon purifier to extinguish the fire or treat toxic gases, thereby improving the safety of lithium battery testing. Four sets of guide blocks are also included. One end of the 33 is connected to a protective cover 31. A drive assembly 6 for driving the lifting and lowering of the protective cover 31 is provided on one side. The drive assembly 6 includes a gear rack 63 fixedly connected to the outer wall of the protective cover 31 and a gear 62 installed in the test base 1 and meshing with the gear rack 63. A placement groove 14 for placing lithium batteries is opened on the upper surface of the test base 1. An installation cavity 13 is opened in the test base 1. The gear 62 is located in the installation cavity 13. A rotating shaft is fixedly installed through the inner ring of the gear 62. A drive motor 61 is fixedly connected to one end of the rotating shaft. The drive motor 61 is fixedly installed on one side of the inner wall of the installation cavity 13.

[0041] In this embodiment, the gear 62 is rotated by the drive motor 61, and then the gear 62 meshes with one side of the gear rack 63, thereby pulling the protective cover 31 downward in a stable manner along the guide block 33 and guide groove 24 connected to its inner wall. This allows the protective cover 31 to cover the top of the test base 1, thereby improving the safety of lithium battery testing. The fire extinguisher assembly 4 and the purifier assembly 5 are set up to extinguish the fire in time or treat the smoke before discharging, thus achieving safe and non-toxic testing of lithium batteries.

[0042] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A lithium battery crush and puncture comprehensive testing device, comprising a test base (1) and a support assembly (2) mounted above the test base (1), characterized in that: Both the test base (1) and the support assembly (2) are equipped with extrusion assemblies for extrusion puncture of lithium batteries; The support assembly (2) includes a support column (21) fixedly installed on the top of the test base (1), and a guide groove (24) is provided on the outer side of the support column (21) along its height direction. A protective component (3) is slidably disposed in the guide groove (24). The protective component (3) includes a guide block (33) slidably disposed in the guide groove (24). One end of the guide block (33) is connected to a protective cover (31). A drive component (6) for driving the protective cover (31) to rise and fall is provided on one side of the protective cover (31). The drive component (6) includes a gear rack (63) fixedly connected to the outer wall of the protective cover (31) and a gear (62) installed in the test base (1) and meshing with the gear rack (63).

2. The lithium battery compression and puncture comprehensive testing device according to claim 1, characterized in that, The extrusion assembly includes miniature cylinders (11) mounted around the top of the test base (1), with each set of miniature cylinders (11) having a side pressure plate (12) connected to its output end, and also includes a lower pressure plate (23) mounted directly above the test base (1).

3. The lithium battery compression and puncture comprehensive testing device according to claim 2, characterized in that, The bracket assembly (2) includes a mounting plate (22) fixedly connected above multiple sets of pillars (21), the mounting plate (22) having multiple scattering holes, and the top of the lower pressure plate (23) being connected to a drive cylinder located at the bottom of the mounting plate (22).

4. The lithium battery compression and puncture comprehensive testing device according to claim 3, characterized in that, Both the guide groove (24) and the guide block (33) are "T" shaped structures; The bottom of the protective cover (31) is also provided with a slot (32), the inner diameter of the slot (32) is larger than the outer diameter of the micro cylinder (11), and the micro cylinder (11) is locked in the slot (32).

5. The lithium battery compression and puncture comprehensive testing device according to claim 1, characterized in that, The top of the protective cover (31) is also equipped with a fire extinguisher assembly (4), and a smoke sensor is provided on one side of the fire extinguisher assembly (4) located on the inner wall of the top of the protective cover (31).

6. The lithium battery compression and puncture comprehensive testing device according to claim 1, characterized in that, The side wall of the protective cover (31) is equipped with a purifier assembly (5).

7. The lithium battery compression and puncture comprehensive testing device according to claim 1, characterized in that, The upper surface of the test base (1) is provided with a placement groove (14) for placing lithium batteries, and the test base (1) is provided with a mounting cavity (13), and the gear (62) is located in the mounting cavity (13).

8. The lithium battery crush and puncture comprehensive testing device according to claim 7, characterized in that, The inner ring of the gear (62) is fixedly mounted with a rotating shaft, and one end of the rotating shaft is fixedly connected to a drive motor (61). The drive motor (61) is fixedly mounted to one side of the inner wall of the mounting cavity (13).

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