Lithium battery extrusion testing device

Abstract

The utility model provides a lithium battery extrusion testing device, which comprises a testing frame, a first cylinder, an upper pressing pole plate, a lower pressing pole plate, a connecting lead, an electric quantity display and a shielding mechanism, and is characterized in that the first cylinder is arranged at the top of the testing frame, and a piston rod of the first cylinder extends into the testing frame; a columnar lithium battery to be detected is placed between the upper pressing polar plate and the lower pressing polar plate, the first air cylinder drives the upper pressing polar plate to move downwards to be in contact with the top of the columnar lithium battery, so that the upper pressing polar plate, the lower pressing polar plate, the connecting wire and the electric quantity display form a complete conduction circuit, and the electric quantity display displays the current of the battery. After the electric quantity information of the battery is obtained, the shielding mechanism shields the contact surface of the upper pressing pole plate and the lithium battery, so that after the lithium battery is in a non-working state, the first air cylinder drives the upper pressing pole plate to move downwards, and extrusion testing is achieved. The method is suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery extrusion testing, in particular to a lithium battery extrusion testing device. Background Art

[0002] With the rapid development of the new energy industry, lithium batteries, as a primary energy storage device, are receiving increasing attention for their safety and reliability. During production and use, lithium batteries may be subjected to various external forces. Therefore, compressive testing of lithium batteries is a crucial step in ensuring their quality and safety. Before compressive testing, lithium batteries must be fully charged to simulate the harshest conditions of actual use. Therefore, the traditional lithium battery compressive testing process typically requires testing the battery's charge level before performing the compressive test, resulting in a cumbersome process that urgently needs further improvement. Utility Model Content

[0003] (1) Technical issues to be solved

[0004] In order to solve the above problems in the prior art, the utility model provides a lithium battery extrusion testing device.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0007] A lithium battery extrusion test device includes a test frame, a first cylinder, an upper pressure plate, a lower pressure plate, connecting wires, a power display and a shielding mechanism;

[0008] The first cylinder is installed on the top of the test frame, and the piston rod of the first cylinder extends into the test frame and is fixedly connected to the upper pressure plate;

[0009] The lower pressure plate is mounted on the bottom of the inner wall of the test frame;

[0010] The connecting wires are respectively connected to the upper voltage plate and the lower voltage plate;

[0011] The power display is connected to the connecting wire;

[0012] The shielding mechanism is installed on the upper voltage plate so that the upper voltage plate is insulated from the contact surface of the lithium battery.

[0013] Preferably, the shielding mechanism includes a second cylinder and an L-shaped insulating plate;

[0014] The second cylinder is fixedly mounted on the top of the upper pressure plate;

[0015] The vertical portion of the L-shaped insulating plate is connected to the piston of the second cylinder, and the horizontal portion of the L-shaped insulating plate covers the bottom of the upper voltage plate.

[0016] Preferably, a plurality of guide rods are provided on the top of the upper voltage plate, and guide holes for the guide rods are opened on the top of the test stand.

[0017] Preferably, a feed port is opened on one side of the lower pressure plate, and a fixing plate is installed in the feed port. After the fixing plate is fixed in the feed port, the gap between the feed port and the fixing plate is the lithium battery placement area.

[0018] Preferably, the upper pressure plate includes an insulating pressure plate and a conductive plate fixed at the bottom of the insulating pressure plate. The structure of the lower pressure plate is the same as that of the upper pressure plate, and is arranged symmetrically with the upper pressure plate, and the conductive plate of the lower pressure plate is located in the lithium battery placement area.

[0019] (3) Beneficial effects

[0020] The beneficial effect of the present invention is that: by adopting the above-mentioned technical scheme, the cylindrical lithium battery to be tested is placed between the upper pressure plate and the lower pressure plate, and the first cylinder drives the upper pressure plate to move downward and contact the top of the cylindrical lithium battery, so that the upper pressure plate, the lower pressure plate, the connecting wire and the power display form a complete conduction circuit, and the battery current is displayed by the power display. After obtaining the battery power information, the shielding mechanism shields the contact surface between the upper pressure plate and the lithium battery, so that the lithium battery is in a non-working state. The first cylinder drives the upper pressure plate to move downward to realize the extrusion test. The present application can perform current detection before the extrusion test of the cylindrical lithium battery. It is convenient and quick to use and suitable for large-scale promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a lithium battery extrusion test device Figure 1 ;

[0022] Figure 2 A schematic diagram of the structure of a lithium battery extrusion test device Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the main structure of a lithium battery extrusion testing device;

[0024] Figure 4 This is a circuit connection diagram for the upper voltage plate, lower voltage plate, connecting wires and power display.

[0025] [Description of Reference Numerals]

[0026] 1. Test stand;

[0027] 2. First cylinder;

[0028] 3. Press the upper plate;

[0029] 4. Connect the wires;

[0030] 5. Press down the plate;

[0031] 6. Battery indicator;

[0032] 7. Fixed plate;

[0033] 8. Shielding mechanism;

[0034] 81. Second cylinder; 82. L-shaped insulating plate. DETAILED DESCRIPTION

[0035] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0036] Please refer to Figures 1 to 3 The utility model provides a lithium battery extrusion test device, including a test frame 1, a first cylinder 2, an upper pressure plate 3, a lower pressure plate 5, a connecting wire 4, a power display 6 and a shielding mechanism 8;

[0037] The first cylinder 2 is installed on the top of the test frame 1, and the piston rod of the first cylinder 2 extends into the test frame 1 and is fixedly connected to the upper pressure plate 3;

[0038] The lower pressure plate 5 is installed at the bottom of the inner wall of the test frame 1;

[0039] The connecting wires 4 are connected to the upper voltage plate 3 and the lower voltage plate 5 respectively;

[0040] The power display 6 is connected to the connecting wire 4;

[0041] The shielding mechanism 8 is installed on the upper pressure plate 3 so that the contact surface between the upper pressure plate 3 and the lithium battery is insulated;

[0042] During use, the cylindrical lithium battery to be tested is placed between the upper pressure plate 3 and the lower pressure plate 5. The first cylinder 2 drives the upper pressure plate 3 to move downward and contact the top of the cylindrical lithium battery, so that the upper pressure plate 3, the lower pressure plate 5, the connecting wire 4 and the power display 6 form a complete conduction circuit. The battery current is displayed by the power display 6. After obtaining the battery power information, the shielding mechanism 8 shields the contact surface between the upper pressure plate 3 and the lithium battery, so that the lithium battery is in a non-working state. The first cylinder 2 drives the upper pressure plate 3 to move downward to realize the extrusion test. The present application can perform current detection before the extrusion test of the cylindrical lithium battery. It is convenient and quick to use and suitable for large-scale promotion and use.

[0043] refer to Figure 4 In the present invention, a resistor is further provided in the conduction circuit formed by the upper voltage plate 3, the lower voltage plate 5, the connecting wire 4 and the power display 6. The resistor is used to limit the current and protect the power display 6.

[0044] In this embodiment, the shielding mechanism 8 includes a second cylinder 81 and an L-shaped insulating plate 82;

[0045] The second cylinder 81 is fixedly mounted on the top of the upper pressure plate 3;

[0046] The vertical part of the L-shaped insulating plate 82 is connected to the piston of the second cylinder 81, and the horizontal part of the L-shaped insulating plate 82 covers the bottom of the upper pressure plate 3. When in use, the second cylinder 81 drives the L-shaped insulating plate 82 to move to realize the opening and closing control of the contact surface between the upper pressure plate 3 and the lithium battery.

[0047] In this embodiment, a plurality of guide rods are provided on the top of the upper voltage plate 3 , and guide holes for the guide rods are opened on the top of the test stand 1 .

[0048] In this embodiment, a feed port is opened on one side of the lower pressure plate 5, and a fixing plate 7 is installed in the feed port. After the fixing plate 7 is fixed in the feed port, the gap between the feed port and the fixing plate 7 is the lithium battery placement area; by installing the fixing plate 7, the cylindrical lithium battery can be fixed in the lithium battery placement area.

[0049] In this embodiment, the upper pressure plate 3 includes an insulating pressure plate and a conductive plate fixed at the bottom of the insulating pressure plate. The structure of the lower pressure plate 5 is the same as that of the upper pressure plate 3, and is symmetrically arranged on the upper pressure plate 3, and the conductive plate of the lower pressure plate 5 is located in the lithium battery placement area.

[0050] The working principle of this utility model is as follows:

[0051] The cylindrical lithium battery to be tested is placed between the upper pressure plate 3 and the lower pressure plate 5. The first cylinder 2 drives the upper pressure plate 3 to move downward and contact the top of the cylindrical lithium battery, so that the upper pressure plate 3, the lower pressure plate 5, the connecting wire 4 and the power display 6 form a complete conduction circuit. The battery current is displayed by the power display 6. After obtaining the battery power information, the shielding mechanism 8 shields the contact surface between the upper pressure plate 3 and the lithium battery, so that the lithium battery is in a non-working state. The first cylinder 2 drives the upper pressure plate 3 to move downward to realize the extrusion test. The present application can perform current detection before the extrusion test of the cylindrical lithium battery. It is convenient and quick to use and suitable for large-scale promotion and use.

[0052] The circuits, electronic components and modules involved are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0053] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0054] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A lithium battery extrusion testing device, characterized in that: It includes a test stand, a first cylinder, an upper pressure plate, a lower pressure plate, connecting wires, a power display and a shielding mechanism; The first cylinder is installed on the top of the test frame, and the piston rod of the first cylinder extends into the test frame and is fixedly connected to the upper pressure plate; The lower pressure plate is mounted on the bottom of the inner wall of the test frame; The connecting wires are respectively connected to the upper voltage plate and the lower voltage plate; The power display is connected to the connecting wire; The shielding mechanism is installed on the upper voltage plate so that the upper voltage plate is insulated from the contact surface of the lithium battery.

2. A lithium battery extrusion testing device according to claim 1, characterized in that: The shielding mechanism includes a second cylinder and an L-shaped insulating plate; The second cylinder is fixedly mounted on the top of the upper pressure plate; The vertical portion of the L-shaped insulating plate is connected to the piston of the second cylinder, and the horizontal portion of the L-shaped insulating plate covers the bottom of the upper voltage plate.

3. The lithium battery extrusion testing device according to claim 1, characterized in that: A plurality of guide rods are provided on the top of the upper voltage plate, and guide holes for the guide rods are opened on the top of the test stand.

4. The lithium battery extrusion testing device according to claim 1, characterized in that: A feed port is provided on one side of the lower pressure plate, and a fixing plate is installed in the feed port. After the fixing plate is fixed in the feed port, the gap between the feed port and the fixing plate becomes the lithium battery placement area.

5. The lithium battery extrusion testing device according to claim 4, characterized in that: The upper pressure plate includes an insulating pressure plate and a conductive plate fixed at the bottom of the insulating pressure plate. The structure of the lower pressure plate is the same as that of the upper pressure plate, and is arranged symmetrically with the upper pressure plate, and the conductive plate of the lower pressure plate is located in the lithium battery placement area.

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