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CN-224202887-U - Battery diaphragm tensile strength detection device

CN224202887UCN 224202887 UCN224202887 UCN 224202887UCN-224202887-U

Abstract

The utility model relates to the field of battery diaphragms and discloses a battery diaphragm tensile strength detection device, which comprises a mounting frame, wherein one surface of the mounting frame is provided with a jack in a penetrating way, the mounting frame is provided with a fixed clamp structure corresponding to the jack, the fixed clamp structure comprises two groups of sucker clamping assemblies and bracket assemblies which are symmetrical with respect to the jack, two groups of sucker clamping assemblies are arranged between the bracket assemblies, a tensile clamp structure is arranged between the mounting frames, a clamp for fixing the battery diaphragm clamps the battery diaphragm in a mode of mainly clamping the sucker, the damage conditions of clamping marks, scratches and the like of the traditional mechanical clamp on the battery diaphragm caused by local pressure concentration are effectively avoided, a clamp for mounting a sensor of a tensile strength detector adopts a rotary drum, one end of the battery diaphragm stretched penetrates through the jack on the rotary drum, the battery diaphragm is fixed on the rotary drum in a rotating way, the rotary drum can clamp the battery diaphragm, the stress of the clamping position is uniform, and the obtained data are accurate.

Inventors

  • WU XINFANG

Assignees

  • 广东众禾新材料有限公司

Dates

Publication Date
20260505
Application Date
20250321

Claims (6)

  1. 1. A battery diaphragm tensile strength detection device comprises a mounting frame (1) and is characterized in that one surface of the mounting frame (1) is provided with a jack (12) in a penetrating mode, one surface of the mounting frame (1) with the jack (12) is provided with a top surface of the mounting frame (1), the mounting frame (1) corresponds to the jack (12) and is provided with a fixing clamp structure, the fixing clamp structure comprises two groups of sucker clamping assemblies and bracket assemblies which are symmetrical with respect to the jack (12), two groups of sucker clamping assemblies are arranged between the bracket assemblies, and a tensile clamp structure is arranged between the mounting frame (1).
  2. 2. The device for detecting the tensile strength of the battery diaphragm according to claim 1, wherein the bracket component comprises threaded rods (8) and adjusting vertical rods (9), the four adjusting vertical rods (9) are uniformly distributed and fixedly connected to the outer surface of the jack (12) of the mounting frame (1) in a matrix arrangement mode, the four adjusting vertical rods (9) correspond to the jack (12), the jack (12) is arranged among the four adjusting vertical rods (9), two end planes of the threaded rods (8) are fixedly connected between the opposite faces of the two adjusting vertical rods (9) corresponding to the short sides of the jack (12), and four nuts are connected to each threaded rod (8) in a threaded mode.
  3. 3. The device for detecting the tensile strength of the battery diaphragm according to claim 2, wherein two trapezoid grooves (10) symmetrical to the jack (12) are formed in the surface, provided with the adjusting vertical rod (9), of the mounting frame (1) corresponding to the jack (12), and the orientation of the trapezoid grooves (10) is consistent with the orientation of the central axis of the threaded rod (8).
  4. 4. The device for detecting the tensile strength of the battery diaphragm according to claim 3, wherein the sucker clamping assembly comprises a T-shaped sucker base (5), an adjusting lug (7), a sucker (14), a spring (11) and a trapezoid lug (16), one end of the middle position of the T-shaped sucker base (5) is fixedly connected with the trapezoid lug (16), the trapezoid lug (16) corresponds to the trapezoid groove (10) and is clamped between the trapezoid lugs (16) and is connected with the trapezoid groove (10), one side of the trapezoid lug (16) deviating from the jack (12) is fixedly connected with one end of the spring (11), the other end of the spring (11) is fixedly connected with one side of the trapezoid groove (10) far away from the jack (12), the spring (11) is arranged in the trapezoid groove (10), two symmetrical ends of the T-shaped sucker base (5) are fixedly connected with two adjusting lugs (7), one side of the two adjusting lugs (7) corresponding to the jack (12) is provided with adjusting holes (15) in a penetrating way, the threaded rods (15) are respectively connected with two threaded rods (8) coaxially, the threaded rods (8) are arranged between the two adjusting lugs (8) and nuts (8) are arranged between the adjusting lugs (7), one surface of the T-shaped sucker base (5) corresponding to the jack (12) is fixedly connected with four evenly distributed suckers (14) in a penetrating mode.
  5. 5. The device for detecting the tensile strength of the battery diaphragm according to claim 4, wherein the suction cup clamping assembly further comprises a ventilation cap (6) and a ventilation pipe (18), one end of the ventilation pipe (18) penetrates through and is fixedly connected to the center position of one surface of the T-shaped suction cup base (5) deviating from the jack (12), the outer thread surface of the ventilation pipe (18) is coaxially and concentrically connected with the inner thread surface of the ventilation cap (6), and a group of ventilation holes (17) which are uniformly distributed in the circumference are formed in the outer cylindrical surface of the ventilation pipe (18) in a penetrating mode.
  6. 6. The device for detecting the tensile strength of the battery diaphragm is characterized in that the stretching clamp structure comprises a supporting plate (2), a motor (3), a rotary drum (4) and a torque sensor (13), wherein a mounting hole (19) is formed in the right surface of the mounting frame (1) in a penetrating mode, a bearing is arranged between the mounting holes (19) and fixedly connected with an outer ring of the bearing, the outer side of the mounting frame (1) corresponding to the mounting hole (19) is fixedly connected with one side of the supporting plate (2), one end of the rotary drum (4) penetrates through the mounting hole (19) to be fixedly connected onto the inner wall of the mounting frame (1) corresponding to the mounting hole (19) through a bearing seat, a jack (12) is formed in the cylindrical surface of the rotary drum (4) in a penetrating mode, the jack (12) in the rotary drum (4) corresponds to the jack (12) in the mounting frame (1), the torque sensor (13) is fixedly mounted on the outer surface of the rotary drum (4) close to one end, one end of the rotary drum (4) corresponding to the mounting hole (19) is fixedly connected with one side of the main shaft (3) of the motor (3) through a coupler, and the rotary drum (4) is fixedly connected onto the base of the supporting plate (2).

Description

Battery diaphragm tensile strength detection device Technical Field The utility model relates to the field of battery diaphragms, in particular to a battery diaphragm tensile strength detection device. Background The battery diaphragm is a layer of diaphragm material positioned between the positive electrode and the negative electrode of the battery, is a key component of the battery, has direct influence on the performance, the safety, the cost and the like of the battery, prevents the positive electrode and the negative electrode of the battery from being directly contacted, avoids short circuit, is the most basic function of the battery diaphragm, has higher potential difference between the positive electrode and the negative electrode in the charging and discharging process of the battery, if the isolation of the diaphragm is not available, electrons can directly flow from the negative electrode to the positive electrode to form short circuit current, so that serious safety problems such as heating and even explosion of the battery are caused, the tensile strength is an important index for measuring the mechanical performance of the battery diaphragm, and the diaphragm can not be easily broken in the manufacturing process of the battery and the using process of the battery when the tensile strength of the battery is detected, thereby avoiding the direct contact of the positive electrode and the negative electrode of the battery to generate short circuit. The existing clamp of the battery diaphragm tensile strength detection device generally adopts a flat-mouth clamp, the surface of the clamp is provided with certain lines to increase friction force, although the surface of the clamp is provided with lines, the slipping phenomenon can still occur for some battery diaphragm materials with smoother surfaces, especially when a high-strength tensile test is carried out, the flat-mouth clamp can cause local damage to a battery diaphragm sample when the clamp clamps a sample because pressure is concentrated at the contact edge of the clamp and the sample, the local damage can become a weak point of the sample in the tensile process, the sample is broken in advance, and the tensile strength obtained by the test is lower than the actual level. Disclosure of utility model Technical problem to be solved Aiming at the defects of the prior art, the utility model provides a device for detecting the tensile strength of a battery diaphragm, which solves the problems. (II) technical scheme In order to achieve the purpose, the battery diaphragm tensile strength detection device comprises a mounting frame, wherein one surface of the mounting frame is provided with a jack in a penetrating mode, one surface of the mounting frame, which is provided with the jack, is provided with a fixing clamp structure corresponding to the jack, the fixing clamp structure comprises two groups of sucker clamping assemblies and bracket assemblies which are symmetrical with each other about the jack, two groups of sucker clamping assemblies are arranged between the bracket assemblies, and a tensile clamp structure is arranged between the mounting frames. Preferably, the bracket component comprises a threaded rod and adjusting vertical rods, the four adjusting vertical rods are uniformly distributed and fixedly connected on the outer surface of the jack, the four adjusting vertical rods correspond to the jack and the jack is arranged between the four adjusting vertical rods, two opposite faces of the two adjusting vertical rods corresponding to the short side edges of the jack are fixedly connected with two end planes of the threaded rod, and four nuts are connected to each threaded rod in a threaded manner. Preferably, the surface of the installation frame with the adjusting vertical rod corresponds to the jack and is provided with two trapezoidal grooves symmetrical to the jack, and the directions of the trapezoidal grooves are consistent with the directions of the central axes of the threaded rods. Preferably, the sucking disc clamping assembly comprises a T-shaped sucking disc base, an adjusting lug, sucking discs, springs and trapezoidal lugs, wherein one end of the middle position of the T-shaped sucking disc base is fixedly connected with the trapezoidal lugs, the trapezoidal lugs are corresponding to the trapezoidal grooves and are connected between the trapezoidal grooves in a clamping mode, one end of each trapezoidal lug is fixedly connected with one side of each jack, the other end of each spring is fixedly connected with one side of each trapezoidal groove, which is far away from each jack, of each trapezoidal groove, the springs are arranged in the trapezoidal grooves, two adjusting lugs are fixedly connected with two ends of the symmetry of the T-shaped sucking disc base, the two adjusting lugs are corresponding to one side of each jack, adjusting holes are respectively connected with two threaded rods in the same axial center,