Power battery blasting test device

Abstract

The utility model discloses a power battery blasting test device. The power battery blasting test device comprises a test base, wherein a test station and a carrying station are formed on the test base; the test assembly is configured at the test station, and the test assembly at least comprises a test board, a driving device configured on the test board, and a puncture probe vertically driven by the driving device; the carrying assembly is configured at the carrying station, and the carrying assembly can carry the battery piece on the carrying station to the position, located at the puncture probe, of the test station; according to the utility model, the problem that the test safety degree is low because the electrolyte sprayed on the surface of the battery piece can be contacted by a worker after the battery piece is punctured can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery sheet detection, and in particular to a power battery explosion test device. Background Art

[0002] During the production process of lithium batteries, the produced lithium batteries need to be tested. The test items include the puncture pressure test of lithium batteries. Through the test, the pressure at which the lithium battery shell is punctured can be determined, as well as the state and safety of the lithium battery after being punctured. However, traditional lithium battery testing equipment is mostly manual loading and unloading. After the lithium battery test is completed, manual unloading is required. At this time, since the electrolyte inside the lithium battery will be sprayed onto the outer surface of the lithium battery, it is risky for the staff to directly carry the lithium battery. In addition, since the battery cells are heavy, manual handling will bring certain inconveniences to the staff, and it is easy to cause bumps and drops. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a power battery explosion test device.

[0004] In order to achieve the above objectives, the technical solution adopted by the utility model includes:

[0005] A test base, on which a test station and a handling station are formed;

[0006] A test assembly, the test assembly is arranged at the test station, and the test assembly at least comprises a test bench, a driving device arranged at the test bench, and a puncture probe vertically driven by the driving device;

[0007] A transport component is disposed at the transport station, and the transport component can transport the battery cell on the transport station to the testing station at the puncture probe.

[0008] After the battery cell puncture test is completed, the puncture probe is driven upward by the test cylinder, and the battery cell is transported to the handling station for unloading through the handling assembly. This setting can avoid the problem of electrolyte attached to the battery cell shell contacting human skin after the battery cell is punctured, thereby improving the safety of the battery cell puncture explosion test.

[0009] In the preferred technical solution of the above-mentioned power battery explosion test device, the handling assembly at least includes a three-axis linear module arranged at the handling station of the test base and a gripper driven by the three-axis linear module.

[0010] In the preferred technical solution of the above power battery explosion test device, the puncture probe is arranged on the driving shaft end of the driving device through a supporting plate.

[0011] In the preferred technical solution of the above-mentioned power battery explosion test device, a light rod is vertically slidably arranged on both sides of the puncture probe on the supporting plate, and the light rod is connected to the supporting plate through an elastic member. With the help of the elastic force of the elastic member, after the bottom end of the light rod is extended downward to a static position, the bottom end of the light rod is located below the tip of the puncture probe.

[0012] In the preferred technical solution of the above-mentioned power battery explosion test device, a rubber cushion layer is arranged at the bottom end of the polished rod.

[0013] In the preferred technical solution of the above-mentioned power battery explosion test device, the elastic member is a spring or elastic steel.

[0014] In the preferred technical solution of the above-mentioned power battery explosion test device, the test base is provided with an outer shell at the test station and the transport station.

[0015] In the preferred technical solution of the above power battery explosion test device, an exhaust device is arranged on the outer shell.

[0016] In the preferred technical solution of the above power battery explosion test device, a visual window is formed on the outer shell, and transparent glass is arranged in the visual window.

[0017] In the preferred technical solution of the above-mentioned power battery explosion test device, the driving device is a test cylinder.

[0018] The beneficial effect of the utility model is that the battery cells are transported by means of a three-axis linear module and a gripper, thereby effectively avoiding the problem of inconvenience in manual handling due to the heavy battery cells. At the same time, it can avoid the problem of electrolyte attached to the battery cell shell contacting human skin after the battery cell is punctured, thereby improving the safety of the battery cell puncture and explosion test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 This is a schematic diagram of the utility model after removing the outer shell Figure 1 ;

[0021] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0022] Figure 4 This is a schematic diagram of the utility model after removing the outer shell Figure 2 ;

[0023] In the figure: a test base 1, a test station 101, a transport station 102, a test table 21, a drive device 22, a puncture probe 23, a three-axis linear module 31, a gripper 32, a bearing plate 4, a polished rod 5, an elastic member 6, a rubber cushion layer 7, and an outer shell 8. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0025] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1 to 4 As shown, the power battery explosion test device of the utility model includes: a test base 1, on which a test station 101 and a transport station 102 are formed; a test assembly, which is arranged at the test station 101, and the test assembly at least includes a test table 21, a driving device 22 arranged on the test table 21, and a puncture probe 23 driven vertically by the driving device 22, the puncture probe 23 is connected to a pressure sensor, and the pressure of the battery cell when being punctured can be determined by detecting the pressure exerted on the puncture probe 23 by the pressure sensor; wherein the driving device 22 is a test cylinder; a transport assembly, which is arranged at the transport station 102, and the transport assembly can transport the battery cell on the transport station 102 to the test station 101 at the puncture probe 23.

[0028] See also Figure 2 , Figure 3 , Figure 4 The testing station 101 is used to perform puncture detection on the battery cells, and the transporting station 102 is used to place the battery cells to be punctured or punctured.

[0029] When performing puncture detection on battery cells, the battery cells at the handling station 102 are first transported to the test station 101 through the handling assembly, and the part of the battery cell to be punctured is located directly below the puncture probe 23. The puncture probe 23 is then controlled to move downward by the driving device 22 so that the puncture probe 23 contacts and punctures the outer shell of the battery cell. The pressure sensor can record the pressure of the battery cell when it is punctured. After the battery cell puncture test is completed, the puncture probe 23 is driven upward by the test cylinder, and the battery cell is transported to the handling station 102 for unloading through the handling assembly. It has the characteristics of convenient operation and simple structure. At the same time, it can prevent staff from directly contacting the damaged lithium battery, reducing the risk of staff during operation.

[0030] In other possible implementations, the test base 1 is provided with a "cross" shaped slide groove at the test station 101, and each branch of the cross slide groove is provided with a screw hole and a bolt. When the battery cell is transported to the test station 101, the bolts in the four branches of the slide groove are moved to the four sides of the corresponding battery, and then the bolts are tightened in the screw holes, so as to fix the positions of the four sides of the battery cell, avoid the problem of displacement when the battery cell is punctured, and improve the safety of the battery cell during the puncture and explosion test.

[0031] In one or more embodiments, the transport assembly at least includes a three-axis linear module 31 disposed at the transport station 102 of the test base 1 and a gripper 32 driven by the three-axis linear module 31 .

[0032] See also Figure 4 The three-axis linear module 31 can be an X-axis linear module, a Y-axis linear module and a Z-axis linear module, wherein the Y-axis linear module is mounted on the X-axis linear module, and the Z-axis linear module is mounted on the Y-axis linear module. The X-axis linear module drives the Y-axis linear module and the Z-axis linear module to move along the X-axis direction, the Y-axis linear module drives the Z-axis linear module to move along the Y-axis direction, and the Z-axis linear module drives the gripper 32 to move along the Z-axis linear direction, thereby realizing the movement of the gripper 32 in the XYZ axis direction and realizing the handling of the battery cell. The gripper 32 can be a clamping cylinder, or two cylinders arranged oppositely.

[0033] In one or more embodiments, the puncture probe 23 is arranged on the driving shaft end of the driving device 22 through the supporting plate 4. Figure 3 By supporting the puncture probe 23 with the support plate 4 , the problem of electrolyte spraying toward the drive device 22 after the battery cell is punctured can be prevented, thereby extending the service life of the drive device 22 .

[0034] In one or more embodiments, a light rod 5 is vertically slidably arranged on both sides of the puncture probe 23 on the supporting plate 4, and the light rod 5 is connected to the supporting plate 4 through an elastic member 6. With the help of the elastic force of the elastic member 6, after the bottom end of the light rod 5 extends downward to a static position, the bottom end of the light rod 5 is located below the tip of the puncture probe 23.

[0035] See also Figure 3 In the initial state, the bottom end of the light rod 5 extends out of the bottom end of the puncture probe 23. When the battery cell needs to be punctured, the driving device 22 is first used to control the load plate 4 to move downward, so that the bottom end of the light rod 5 at the bottom of the load plate 4 first contacts the surface of the battery cell, and the spring is in a compressed state. After that, the puncture probe 23 contacts and punctures the battery cell outer shell 8, and the electrolyte inside the battery cell is ejected from the puncture hole. By pressing the battery cell downward with the light rod 5, the battery cell can be prevented from shaking up and down after being punctured, which affects the use of the puncture probe 23. At the same time, this setting can ensure the stability of the puncture probe 23 withdrawing from the battery cell and accelerate the consumption of the electrolyte in the battery cell.

[0036] In one or more embodiments, a rubber cushion layer 7 is disposed at the bottom end of the polished rod 5 .

[0037] See also Figure 3 A pressure expansion portion is formed at the bottom end of the polished rod 5, and the diameter of the pressure expansion portion is greater than the diameter of the polished rod 5. Through this arrangement, the pressing effect of the polished rod 5 on the battery cell can be guaranteed and the shaking of the battery cell can be reduced.

[0038] See also Figure 3 The rubber cushion layer 7 is arranged on the bottom surface of the pressure expansion part. Through this arrangement, soft contact can be achieved between the polished rod 5 and the battery cell, so that the polished rod 5 can avoid damaging the battery cell shell.

[0039] In one or more embodiments, the elastic member 6 is a spring or elastic steel.

[0040] In one or more embodiments, the test base 1 is provided with an outer shell 8 at the test station 101 and the transport station 102; a visual window is formed on the outer shell 8, and transparent glass is provided in the visual window. Figure 1 The outer shell 8 can effectively prevent the electrolyte from spraying everywhere, thereby improving the safety of the battery cell puncture and explosion test. Transparent glass is configured in the visual window, so that the staff can observe the process of the battery cell puncture and explosion test in time.

[0041] In one or more embodiments, an exhaust device is disposed on the outer shell 8. The exhaust device is not shown in the drawings, and the exhaust device may be a negative pressure fan. It should be noted that smoke is generated after the battery cell is punctured, and the smoke is extracted to the outside through the exhaust device, which can further improve the safety performance during the puncture test.

[0042] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A power battery explosion test device, characterized in that: include: A test base, on which a test station and a handling station are formed; A test assembly, the test assembly is arranged at the test station, the test assembly at least comprises a test bench, a driving device arranged at the test bench, and a puncture probe vertically driven by the driving device, the driving device is a test cylinder, the puncture probe is arranged at the driving shaft end of the driving device through a carrier plate, a light rod is arranged on the carrier plate for vertical sliding on both sides of the puncture probe, the light rod is connected to the carrier plate through an elastic member, and by means of the elastic force of the elastic member, after the bottom end of the light rod is extended downward to a static position, the bottom end of the light rod is located below the tip of the puncture probe; A transport component is arranged at the transport station, and the transport component can transport the battery cell on the transport station to the test station at the puncture probe. The transport component at least includes a three-axis linear module arranged at the test base transport station and a gripper driven by the three-axis linear module.

2. The power battery explosion test device according to claim 1, characterized in that: The bottom end of the polished rod is provided with a rubber cushion layer.

3. The power battery explosion test device according to claim 1, characterized in that: The elastic member is a spring or elastic steel.

4. The power battery explosion test device according to any one of claims 1 to 3, characterized in that: The test base is provided with an outer shell at the test station and the transport station.

5. The power battery explosion test device according to claim 4, characterized in that: The outer shell is provided with an exhaust device.

6. The power battery explosion test device according to claim 4, characterized in that: A visual window is formed on the outer shell, and transparent glass is arranged in the visual window.

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