Convenient tool for multi-position acupuncture test of lithium battery

Abstract

The utility model belongs to the technical field of testing tools, and particularly relates to a lithium battery multi-position needling testing convenient tool which is sleeved on semi-extrusion equipment and comprises a semi-arc clamping piece, a square clamping piece and a locking device, the semi-arc clamping piece is matched with the square clamping piece to form an arch-shaped cavity, and the semi-extrusion equipment is clamped in the arch-shaped cavity. The locking device comprises a tensioning air cylinder and a spring, a connecting rod extends out of the outward end of the semicircular clamping piece, and the other end of the connecting rod is connected with the lithium battery. The outward end of the square clamping piece is connected with an upper tensioning air cylinder and a lower tensioning air cylinder, and the driving ends of the tensioning air cylinders penetrate through the reaction cavity in the square clamping piece and are correspondingly connected with the two tail ends of the semi-arc clamping piece in a tensioning mode. Springs are respectively arranged in the two reaction cavities, one end of each spring is connected with the driving end of the tensioning cylinder, and the other end is connected with a semi-arc clamping piece. The tool is provided with the U-shaped groove and a plurality of mounting holes, a plurality of tools can be assembled on semi-extrusion equipment, the function that a plurality of steel needles are used for lithium battery needling testing at the same time can be achieved, and the distance between the needling position and the steel needles can be flexibly adjusted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to test frock technical field especially relates to a lithium battery multi -position needle -pricking test convenient frock. BACKGROUND

[0002] In the field of lithium battery safety testing, needle-pricking test is a key test project for evaluating the thermal runaway and safety performance of lithium batteries when pierced by sharp objects. Traditional needle-pricking frock is mostly designed for single-needle needle-pricking only, which limits the comprehensiveness and accuracy of the test. Lithium batteries may be subjected to multiple simultaneous punctures in actual application, and single-needle testing cannot simulate such complex conditions, resulting in deviations between test results and actual application scenarios. Moreover, the existing needle-pricking frock often needs to replace the original extrusion head of the half-extrusion device, which not only increases the installation difficulty, but also reduces the versatility and flexibility of the device. Each time the frock is replaced, a large amount of time and manpower is consumed, and frequent disassembly may cause damage to the device or reduce its precision, affecting the stability and reliability of the test results. SUMMARY

[0003] The utility model aims at providing a lithium battery multi -position needle -pricking test convenient frock, which aims at solving the above technical problems in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model embodiment provides a lithium battery multi -position needle -pricking test convenient frock, which is sleeved on a half-extrusion device and comprises a semicircular arc clamping piece, a square clamping piece and a locking device. The semicircular arc clamping piece cooperates with the square clamping piece to form an arch-shaped cavity, and the half-extrusion device is clamped in the cavity. The locking device comprises a tension cylinder and a spring. One end of the semicircular arc clamping piece extends out a connecting rod, and the other end of the connecting rod is connected to the lithium battery. One end of the square clamping piece is connected to two tension cylinders, and the driving end of the tension cylinder penetrates the reaction cavity in the square clamping piece and corresponds to the two ends of the semicircular arc clamping piece. Springs are arranged in the two reaction cavities, one end of the spring is connected to the driving end of the tension cylinder, and the other end of the spring is connected to the semicircular arc clamping piece.

[0005] Further, a support column is installed on the square clamping piece, and the other end of the support column is connected to the tension cylinder. The driving end of the tension cylinder extends into the square clamping piece along the guide of the support column.

[0006] Further, the locking device further comprises two tension springs. One end of one tension spring is connected to the connecting rod, and the other end is connected to the upper end of the square clamping piece. One end of the other tension spring is connected to the connecting rod, and the other end is connected to the lower end of the square clamping piece.

[0007] Further, the upper end of the semicircular arc clamping piece is further provided with a U-shaped groove, and a plurality of mounting holes are arranged uniformly on the half-extrusion device. A bolt extends into the U-shaped groove and is threadedly connected to the mounting hole.

[0008] Further, the inner side of the semi-circular arc clamping piece is provided with an anti-skid pad for enhancing friction.

[0009] Further, the semi-circular arc clamping piece and the square clamping piece are made of aluminum alloy material.

[0010] Further, the semi-circular arc clamping piece and the square clamping piece are provided with a plurality of groups, and a plurality of groups of locking devices are provided and cooperate to clamp the semi-extrusion equipment.

[0011] The lithium battery multi-position needle test convenient tooling provided by the embodiment of the utility model has at least one of the following technical effects:

[0012] The core structure of the tooling is composed of a semi-circular arc clamping piece and a square clamping piece, and the two cooperate to form an arch-shaped cavity, which can be tightly clamped on the semi-extrusion equipment, without the need to disassemble the original extrusion head. After the caliber is widened, the semi-circular arc clamping piece and the square clamping piece can move on the semi-extrusion equipment, realizing quick installation and disassembly. The locking device includes a tension cylinder and a spring. The semi-circular arc clamping piece is connected to the lithium battery through a connecting rod, and the square clamping piece is connected to the upper and lower tension cylinders. The driving end of the tension cylinder penetrates the reaction cavity of the square clamping piece and is connected to the two ends of the semi-circular arc clamping piece. The spring is placed in the reaction cavity, and the spring force is used to assist in stable locking, ensuring that the tooling can remain stable under different test pressures. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0014] Fig. 1 The overall simple diagram of the lithium battery multi-position needle test convenient tooling provided by the embodiment of the utility model is provided.

[0015] Fig. 2 The overall structure diagram of the lithium battery multi-position needle test convenient tooling provided by the embodiment of the utility model is provided.

[0016] In the drawings, various reference signs represent:

[0017] 100, semi-extrusion equipment; 110, semi-circular arc clamping piece; 120, square clamping piece; 130, locking device; 140, tension cylinder; 150, spring; 160, connecting rod; 170, reaction cavity; 180, tension spring; 190, support column.

[0018] 200, U-shaped groove; 210, mounting hole; 220, anti-skid pad. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described below in detail, examples of which are shown in the drawings 1-2, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. Hereinafter, the embodiments of the present application will be described by referring to the accompanying drawings. Figs. 1-2 The described embodiments are exemplary, and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0020] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0021] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0022] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0023] In one embodiment of this utility model, a convenient tooling for multi-position needle penetration testing of lithium batteries is provided, which is fitted onto a semi-extrusion device 100. It includes a semi-circular arc clamp 110, a square clamp 120, and a locking device 130. The semi-circular arc clamp 110 and the square clamp 120 form an arch-shaped cavity, securing the semi-extrusion device 100 within it. The locking device 130 includes a tension cylinder 140 and a spring 150. A connecting rod 160 extends from the outward-facing end of the semi-circular arc clamp 110, and the other end of the connecting rod 160 is connected to the lithium battery. The outward-facing end of the square clamp 120 is connected to two tension cylinders 140. The driving end of the tension cylinder 140 passes through the reaction chamber 170 within the square clamp 120 and correspondingly tensions the two ends of the semi-circular arc clamp 110. Springs 150 are provided in the two reaction chambers 170 respectively. One end of the spring 150 is connected to the drive end of the tensioning cylinder 140, and the other end is connected to the semi-circular arc clamp 110.

[0024] Specifically, the core structure of this fixture consists of a semi-circular arc clamp 110 and a square clamp 120, which together form an arched cavity that can be tightly clamped onto the semi-extrusion equipment 100 without disassembling the original extrusion head. After widening the diameter, the semi-circular arc clamp 110 and the square clamp 120 can move on the semi-extrusion equipment 100, achieving rapid installation and disassembly. The locking device 130 includes a tensioning cylinder 140 and a spring 150. The semi-circular arc clamp 110 is connected to the lithium battery via a connecting rod 160, while the square clamp 120 connects the upper and lower tensioning cylinders 140. The driving end of the tensioning cylinder 140 penetrates the reaction chamber 170 of the square clamp 120 and is connected to the two ends of the semi-circular arc clamp 110. The spring 150 is placed inside the reaction chamber 170, and the elastic force of the spring 150 assists in achieving a stable lock, ensuring that the fixture remains stable under different test pressures.

[0025] Furthermore, a support column 190 is mounted on the square clamp 120. The other end of the support column 190 is connected to a tension cylinder 140, and the drive end of the tension cylinder 140 extends into the square clamp 120 along the guide of the support column 190. Specifically, the support column 190 plays a supporting and stabilizing role. Since the tension cylinder 140 vibrates during operation, which may cause it to become unstable or disengage, the support column 190 can provide stable support.

[0026] Furthermore, the locking device 130 also includes two tension springs 180. One tension spring 180 is connected at one end to the connecting rod 160 and at the other end to the upper end of the square clamp 120. The other tension spring 180 is connected at one end to the connecting rod 160 and at the other end to the lower end of the square clamp 120. When the tension cylinder 140 is not in operation, the two tension springs 180 are in a stretched state, providing a certain preload between the connecting rod 160 and the square clamp 120. When the tension cylinder 140 is in operation, its drive end extends into the square clamp 120 and generates additional tension, which, together with the tension of the tension springs 180, achieves the fastening of the object. When the tension cylinder 140 releases the tension, the elasticity of the tension springs 180 helps to restore the connecting rod 160 and the square clamp 120 to their initial positions.

[0027] Furthermore, the upper end of the semi-circular arc clamp 110 is also provided with a U-shaped groove 200, corresponding to a number of evenly arranged mounting holes 210 on the semi-extrusion device 100. A bolt extends from the U-shaped groove 200 and is threaded into the mounting hole 210. Several sets of semi-circular arc clamps 110 and square clamps 120 are provided, corresponding to several sets of locking devices 130, which cooperate to clamp the semi-extrusion device 100 inside. Specifically, the U-shaped groove 200 and multiple mounting holes 210 allow for the assembly of multiple tooling fixtures on the semi-extrusion device 100, enabling the simultaneous use of multiple steel needles for lithium battery needle penetration testing, and allowing for flexible adjustment of the needle penetration position and the distance between the steel needles.

[0028] Furthermore, the inner side of the semi-circular arc clamp 110 is provided with an anti-slip pad 220 to enhance friction, which is used to enhance the stability of the semi-circular arc clamp 110 during the operation of the tensioning cylinder 140.

[0029] Furthermore, the semi-circular clip 110 and the square clip 120 are made of aluminum alloy, which enhances the structural stability.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A convenient tooling for multi-position needle penetration testing of lithium batteries, fitted onto a semi-extrusion device (100), characterized in that, The device includes a semi-circular arc clamp (110), a square clamp (120), and a locking device (130). The semi-circular arc clamp (110) cooperates with the square clamp (120) to form an arch-shaped cavity, and clamps the semi-extrusion device (100) inside. The locking device (130) includes a tensioning cylinder (140) and a spring (150). A connecting rod (160) extends outward from one end of the semi-circular arc clamp (110), and the other end of the connecting rod (160) is connected to a lithium battery. The outward-facing end of the square clamp (120) is connected to the upper and lower tensioning cylinders (140). The driving end of the tensioning cylinder (140) passes through the reaction chamber (170) inside the square clamp (120) and correspondingly tensions the two ends of the semi-circular clamp (110). The two reaction chambers (170) are respectively provided with springs (150). One end of the spring (150) is connected to the driving end of the tensioning cylinder (140), and the other end is connected to the semi-circular clamp (110).

2. The convenient tooling for multi-position needle penetration testing of lithium batteries according to claim 1, characterized in that, The locking device (130) further includes two tension springs (180). One end of one tension spring (180) is connected to the connecting rod (160), and the other end is connected to the upper end of the square clip (120). The other tension spring (180) is connected to the connecting rod (160) at one end and to the lower end of the square clip (120) at the other end.

3. The convenient tooling for multi-position needle penetration testing of lithium batteries according to claim 1, characterized in that, A support column (190) is installed on the square clip (120). The other end of the support column (190) is connected to the tension cylinder (140). The driving end of the tension cylinder (140) extends into the square clip (120) along the guide of the support column (190).

4. The convenient tooling for multi-position needle penetration testing of lithium batteries according to claim 1, characterized in that, The upper end of the semi-circular arc clamp (110) is also provided with a U-shaped groove (200), and a number of evenly arranged mounting holes (210) are provided on the semi-extrusion device (100). A bolt extends from the U-shaped groove (200) and is threaded into the mounting hole (210).

5. The convenient tooling for multi-position needle penetration testing of lithium batteries according to claim 1, characterized in that, The inner side of the semi-circular arc clamp (110) is provided with an anti-slip pad (220) to enhance friction.

6. The convenient tooling for multi-position needle penetration testing of lithium batteries according to any one of claims 1-5, characterized in that, The semi-circular arc-shaped clip (110) and the square clip (120) are made of aluminum alloy.

7. The convenient tooling for multi-position needle penetration testing of lithium batteries according to any one of claims 1-5, characterized in that, The semi-circular arc clamp (110) and square clamp (120) are provided in several groups, corresponding to the locking device (130) in several groups, and cooperate to clamp the semi-extrusion device (100) inside.

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