Composite material overcurrent testing device

Abstract

The utility model discloses a composite material overcurrent testing device which comprises a bottom plate, the bottom plate is connected with a right vertical plate and a left vertical plate, a limiting column is fixedly connected between the right vertical plate and the left vertical plate, a left sliding plate is connected to the limiting column in a sliding mode, and an air cylinder is fixedly connected to the position, close to the left sliding plate, of the top face of the bottom plate. The top surfaces of the right vertical plate and the left sliding plate are detachably and fixedly connected with steel pipes through clamping structures, the ends, located between the right vertical plate and the left sliding plate, of the steel pipes are fixedly connected with fixed copper plates, and a test sample strip is fixedly connected between the two fixed copper plates. According to the device, the test sample strip is connected between the right vertical plate and the left sliding plate and is electrified through the cable and the fixed copper plate, and the simulation force provided by the air cylinder is utilized, so that the test of directly simulating the finished product state on the test sample strip is successfully realized, the change of the test sample strip is clear and visible, the test cost and the complexity of later verification are reduced, and the test efficiency is improved. The structure is simple, efficient, convenient to operate and suitable for application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of overcurrent testing, in particular to an overcurrent testing device for composite materials. Background Art

[0002] Overcurrent test refers to: the change of the bonding state and delamination temperature of the copper-aluminum bonding surface under the self-heating state of the copper-aluminum composite material.

[0003] At present, when the battery cell is fully charged, the positive and negative poles of the battery cell are connected to make the battery cell enter a short-circuit state, and the positive and negative poles are over-current and self-heated. After the discharge is completed, the changes in the copper-aluminum bonding surface are observed.

[0004] However, the test can only be carried out in the finished battery cell state, and the test cannot be completed at the material end, which causes inconvenience to the verification. This is because after the battery cell is over-current tested, the changes in the internal composite material need to be disassembled for better observation, and when measuring the temperature, the temperature change of the composite material is poor because the temperature sensing line of the thermocouple thermometer cannot be easily fitted with the composite material. In summary, the existing over-current test schemes are inefficient and costly. For this reason, a composite material over-current test device is proposed. Utility Model Content

[0005] The utility model aims to provide a composite material overcurrent test device to solve the problems of high testing cost and complicated operation caused by conducting overcurrent test after processing composite materials into finished products as mentioned in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite material overcurrent testing device, comprising a base plate, the top surface of the base plate is fixedly connected with a right vertical plate and a left vertical plate, a limiting column is fixedly connected between the right vertical plate and the left vertical plate, a left slide is slidably connected to the limiting column, a cylinder is fixedly connected to the top surface of the base plate near the left slide, an L-shaped connecting block is fixedly connected to the bottom of the left slide, the output end of the cylinder is fixedly connected to the L-shaped connecting block, the top surfaces of the right vertical plate and the left slide are both detachably fixedly connected with steel pipes through a clamping structure, the ends of the steel pipes between the right vertical plate and the left slide are both fixedly connected with fixed copper plates, a test specimen is fixedly connected between the two fixed copper plates, and a cable is fixedly connected to the fixed copper plate, and the cable passes through the interior of the steel pipe.

[0007] Preferably, the clamping structure comprises a locking buckle and an upper clamping block, wherein the upper clamping block is located above the steel pipe and locks the steel pipe through the locking buckle.

[0008] Preferably: the cable is connected to a battery box, the fixed copper plates connected at both ends of the test sample do not contact each other separately, and the fixed copper plates connected at both ends of the test sample are located on the same horizontal plane.

[0009] Preferably, two limiting columns are provided, and the bottom of the left sliding plate is in contact with the top surface of the bottom plate and is slidably connected thereto.

[0010] Preferably, an upper notch is formed on the bottom surface of the upper clamping block, a lower notch is formed on the top surface of the right vertical plate or the left sliding plate, and the steel pipe is placed between the upper notch and the lower notch.

[0011] Preferably, the fixed copper plate is provided with a plurality of mounting openings, and the test specimen is mounted on the fixed copper plate by fastening bolts.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the device, through the setting and joint cooperation of the right vertical plate, the left slide plate and the cylinder, utilizes the test sample connected between the right vertical plate and the left slide plate and energized by cables and fixed copper plates, and the simulation force provided by the cylinder, successfully realizes the direct test of the test sample when simulating the finished product state, and makes the changes of the test sample clearly visible, reducing the testing cost and the tediousness of subsequent verification. The structural setting is simple, efficient, easy to operate, and suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall structural view of the utility model;

[0014] Figure 2 It is a top view of the utility model;

[0015] Figure 3 This is a working principle diagram of the utility model.

[0016] In the figure: 1, bottom plate; 101, right vertical plate; 102, left slide plate; 103, left vertical plate; 104, limit column; 2, cylinder; 201, L-shaped connecting block; 3, lock; 301, upper clamping block; 4, steel pipe; 401, fixed copper plate; 5, cable; 6, test specimen. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Reference Figure 1-3 As shown, the utility model provides a technical solution for a composite material overcurrent test device:

[0019] A composite material overcurrent testing device comprises a base plate 1, a right vertical plate 101 and a left vertical plate 103 are fixedly connected to the top surface of the base plate 1, a limiting column 104 is fixedly connected between the right vertical plate 101 and the left vertical plate 103, a left slide plate 102 is slidably connected to the limiting column 104, a cylinder 2 is fixedly connected to the top surface of the base plate 1 near the left slide plate 102, an L-shaped connecting block 201 is fixedly connected to the bottom of the left slide plate 102, an output end of the cylinder 2 is fixedly connected to the L-shaped connecting block 201, the top surfaces of the right vertical plate 101 and the left slide plate 102 are both detachably fixedly connected to a steel pipe 4 through a clamping structure, the ends of the steel pipe 4 located between the right vertical plate 101 and the left slide plate 102 are both fixedly connected to a fixed copper plate 401, a test sample strip 6 is fixedly connected between the two fixed copper plates 401, and a cable 5 is fixedly connected to the fixed copper plate 401, and the cable 5 passes through the interior of the steel pipe 4.

[0020] Among them, it should be supplemented that the clamping structure includes a lock 3 and an upper clamping block 301, the upper clamping block 301 is located above the steel pipe 4 and locks the steel pipe 4 through the lock 3, the cable 5 is connected to the battery box, the fixed copper plates 401 connected at both ends of the test specimen 6 are not in contact alone, and the fixed copper plates 401 connected at both ends of the test specimen 6 are located on the same horizontal plane. An upper recess is provided on the bottom surface of the upper clamping block 301, and a lower recess is provided on the top surface of the right vertical plate 101 or the left slide plate 102, and the steel pipe 4 is placed between the upper recess and the lower recess.

[0021] Among them, it should be additionally explained that there are two limit columns 104, the bottom of the left slide plate 102 is in contact with the top surface of the base plate 1 and is slidably connected thereto, a number of mounting openings are opened on the fixed copper plate 401, and the test specimen 6 is mounted on the fixed copper plate 401 by tightening bolts.

[0022] Working principle: When using this device, you first need to prepare a thermocouple thermometer and insulating gloves. This is an existing device and will not be described in detail here. The operator wears insulating gloves to protect himself, and fixes the test sample 6 to the installation port opened on the fixed copper plate 401 through bolts, and then sticks the temperature sensing line on the thermocouple thermometer to the position on the test sample 6 where the temperature needs to be monitored with high-temperature insulating tape, and records the initial temperature, opens the battery box, and adjusts the current to a specific value and maintains it for a specific time according to the test needs. During this process, start the cylinder 2. The output end of the cylinder 2 applies a thrust to the L-shaped connecting block 201, so that the left slide plate 102 tends to move away from the right vertical plate 101, thereby successfully simulating the force of the test sample 6 being expanded outward when the test sample 6 is made into a finished battery cell and a short-circuit test is performed, so that the test of the device is closer to the test performed when the finished product is in a state. After the test time is over, the initial and final temperatures are recorded, and the test sample 6 is photographed to record its appearance. It should be noted that if the test sample 6 breaks during the test, the test is stopped immediately.

[0023] After the test is finished, the test sample 6 is removed after cooling down, and the copper-aluminum bonding surface in the test sample 6 is observed.

[0024] It should be noted that, refer to Figure 3 As shown, the device uses an adjustable DC power supply, that is, the battery box in the device, to connect the two ends of the test sample 6 through a cable 5, so that the test sample 6 is short-circuited. During this process, the temperature of the test sample 6 is monitored by a thermocouple thermometer, and the changes of the test sample 6 are observed.

[0025] Among them, the steel pipe 4 is provided to protect the cable 5, and the fixed copper plate 401 is provided to provide a platform for fixing the test sample 6 and for conduction. At the same time, the clamping structure is provided to facilitate the user to disassemble the steel pipe 4 and the right vertical plate 101 or the left slide plate 102, and store the fixed copper plate 401, the steel pipe 4, the cable 5 and the battery box separately to avoid corrosion of the fixed copper plate 401 by the external environment, thereby affecting the conductive performance of the fixed copper plate 401 and further affecting the service life of the device.

[0026] Through the arrangement and cooperation of the right vertical plate 101, the left slide plate 102 and the cylinder 2, etc., the device utilizes the test spline 6 connected between the right vertical plate 101 and the left slide plate 102 and energized through the cable 5 and the fixed copper plate 401, and the simulation force provided by the cylinder 2, successfully realizes the test of the test spline 6 directly simulating the finished product state, and makes the changes of the test spline 6 clearly visible, reducing the testing cost and the tediousness of the subsequent verification. The structural arrangement is simple, efficient, easy to operate, and suitable for popularization and use.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite material overcurrent test device, comprising a base plate (1), characterized in that: The top surface of the bottom plate (1) is fixedly connected to a right vertical plate (101) and a left vertical plate (103); a limiting column (104) is fixedly connected between the right vertical plate (101) and the left vertical plate (103); a left slide plate (102) is slidably connected to the limiting column (104); a cylinder (2) is fixedly connected to the top surface of the bottom plate (1) near the left slide plate (102); an L-shaped connecting block (201) is fixedly connected to the bottom of the left slide plate (102); an output end of the cylinder (2) is connected to the L-shaped connecting block (201) is fixedly connected, the top surfaces of the right vertical plate (101) and the left slide plate (102) are both detachably fixedly connected to a steel pipe (4) through a clamping structure, the ends of the steel pipe (4) located between the right vertical plate (101) and the left slide plate (102) are both fixedly connected to a fixed copper plate (401), a test sample (6) is fixedly connected between the two fixed copper plates (401), and the fixed copper plate (401) is fixedly connected to a cable (5), and the cable (5) passes through the interior of the steel pipe (4).

2. A composite material overcurrent testing device according to claim 1, characterized in that: The clamping structure comprises a locking buckle (3) and an upper clamping block (301); the upper clamping block (301) is located above the steel pipe (4) and locks the steel pipe (4) through the locking buckle (3).

3. A composite material overcurrent testing device according to claim 2, characterized in that: The cable (5) is connected to a battery box, the fixed copper plates (401) connected at both ends of the test sample (6) are not in contact with each other, and the fixed copper plates (401) connected at both ends of the test sample (6) are located on the same horizontal plane.

4. A composite material overcurrent testing device according to claim 1, characterized in that: Two limiting columns (104) are provided, and the bottom of the left sliding plate (102) is in contact with the top surface of the bottom plate (1) and is slidably connected thereto.

5. A composite material overcurrent testing device according to claim 2, characterized in that: The bottom surface of the upper clamping block (301) is provided with an upper notch, the top surface of the right vertical plate (101) or the left sliding plate (102) is provided with a lower notch, and the steel pipe (4) is placed between the upper notch and the lower notch.

6. A composite material overcurrent testing device according to claim 1, characterized in that: The fixed copper plate (401) is provided with a plurality of mounting openings, and the test specimen (6) is mounted on the fixed copper plate (401) by means of fastening bolts.

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