Automatic thickness testing device for lithium battery diaphragm

Abstract

The utility model discloses a lithium battery diaphragm thickness automatic testing device which comprises a base, the upper end of the base is provided with a supporting table for placing a diaphragm, a detection probe for testing the thickness of the diaphragm is arranged above the supporting table, and the detection probe is fixed above the supporting table through a support. A power roller and a portable pressing wheel which are matched for use and drive the diaphragm to move are mounted above the base, and the power roller and the portable pressing wheel are mounted on the base through a console. The diaphragm thickness detection device is simple in structure, the power roller is controlled to rotate through the button, the diaphragm is pressed by the hand-held pressing wheel, the diaphragm is ensured to be fully contacted with the peripheral surface of the power roller, the rotating power roller can drive the diaphragm to advance at the moment, and the thickness of the diaphragm is detected by the detection probe. The problems that the distance cannot be kept equidistant and the testing efficiency is low during manual diaphragm surface thickness testing are avoided, and the stability and efficiency of diaphragm thickness testing are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery diaphragm manufacturing, in particular to an automatic testing device for the thickness of a lithium battery diaphragm. Background Art

[0002] In recent years, lithium batteries have been used more and more widely. Lithium batteries are an indispensable component of new energy vehicles, electric vehicles, etc., and the diaphragm is an important component of lithium-ion batteries that affects battery performance; among them, the uniformity of diaphragm thickness is a particularly important quality indicator, which directly affects the appearance quality and even the internal performance of the diaphragm roll.

[0003] However, the current thickness gauge test is a manual test, and the membrane surface thickness test distance cannot be equidistant, resulting in the fact that the uniformity and inspection efficiency of the lithium battery membrane thickness test cannot be greatly improved. Therefore, an automatic testing device for the lithium battery membrane thickness is proposed. Utility Model Content

[0004] The utility model aims to provide a lithium battery diaphragm thickness automatic testing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic testing device for the thickness of a lithium battery diaphragm, comprising a base, a support table for placing the diaphragm is installed on the upper end of the base, a detection probe for testing the thickness of the diaphragm is provided above the support table, and the detection probe is fixed above the support table through a bracket, and a power roller and a portable pressure wheel are installed above the base for use in conjunction with and driving the movement of the diaphragm, and the power roller and the portable pressure wheel are installed on the base through a console.

[0006] As a further solution of the utility model: the bracket includes a detection support rod vertically installed on the upper end surface of the support platform, a detection support frame is installed on the outer peripheral surface of the detection support rod, and a detection probe is installed on the end of the detection support frame.

[0007] As a further solution of the utility model: a bottom plate is installed on the upper end surface of the base at a position on the side of the support platform, and the power roller and the portable pressure wheel are located just above the bottom plate.

[0008] As a further solution of the utility model: a button for controlling the rotation direction and speed of the power roller is installed on the front end surface of the base.

[0009] As a further solution of the utility model: the detection probe is connected to the display, and the detection probe is connected to a probe lifting pedal switch for controlling the lifting and lowering of the detection probe.

[0010] As a further solution of the utility model: the detection support rod and the detection support frame are both made of marble.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The power roller is controlled to rotate by a button, and the diaphragm is pressed by a portable pressure wheel to ensure that the diaphragm is in full contact with the outer peripheral surface of the power roller. At this time, the self-rotating power roller can drive the diaphragm forward and the thickness of the diaphragm can be detected by the detection probe. The thickness of the lithium battery diaphragm can be tested at equal distances, and the feedback on the uniformity of the diaphragm thickness is better. This avoids the problem of being unable to maintain equal distance and slow testing efficiency when manually testing the surface thickness of the diaphragm, thereby improving the inspection efficiency of the diaphragm thickness test. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the test device of the utility model;

[0014] In the figure: 1. base; 2. support platform; 3. detection support rod; 4. detection support frame; 5. detection probe; 6. bottom plate; 7. control console; 8. power roller; 9. portable pressure wheel; 10. button; 11. display; 12. probe lifting pedal switch. DETAILED DESCRIPTION

[0015] 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.

[0016] See also Figure 1 In an embodiment of the utility model, a lithium battery diaphragm thickness automatic testing device includes a base 1, a support platform 2 for placing the diaphragm is installed on the upper end of the base 1, a detection probe 5 for testing the thickness of the diaphragm is provided above the support platform 2, and the detection probe 5 is fixed above the support platform 2 through a bracket, and a power roller 8 and a portable pressure wheel 9 that are used together to drive the diaphragm to move are installed above the base 1, and the power roller 8 and the portable pressure wheel 9 are installed on the base 1 through a control console 7.

[0017] See also Figure 1 In one embodiment, in order to support the detection probe 5, in this embodiment, preferably, the bracket includes a detection support rod 3 vertically installed on the upper end surface of the support platform 2, and a detection support frame 4 is installed on the outer peripheral surface of the detection support rod 3, and the end of the detection support frame 4 is installed with the detection probe 5; the detection support rod 3 and the detection support frame 4 are both made of marble.

[0018] Specifically, under the action of the detection support rod 3 and the detection support frame 4, a certain positioning effect can be achieved for the detection probe 5. Secondly, the detection probe 5 can be lifted and lowered in the vertical direction on the detection support frame 4. The lifting and lowering of the detection probe 5 is controlled by the probe lifting pedal switch 12, and the thickness data detected by the detection probe 5 will be reflected on the display 11. The display 11 can be connected to a computer to realize automatic thickness testing and automatic uploading to the computer, which can avoid the risk of error in test data entry and cancel manual entry, greatly improve the inspection efficiency, and facilitate observation by operators (the detection probe 5 is mainly a thickness test transmission accessory principle: when not measuring, the distance between the detection probe 5 and the support platform 2 is 0. When working, the distance between the detection probe 5 and the support platform 2 is the thickness of the diaphragm, which is displayed on the display 11).

[0019] See also Figure 1 In one embodiment, in order to drive the diaphragm forward, in this embodiment, preferably, a bottom plate 6 is installed on the upper end surface of the base 1 at a position on the side of the support platform 2, and a power roller 8 and a portable pressure wheel 9 are located directly above the bottom plate 6; a button 10 for controlling the rotation direction and speed of the power roller 8 is installed on the front end surface of the base 1: the power roller 8 is driven by a motor, and the motor is electrically connected to the button 10 (the principle of controlling the rotation of the power roller 8 is a prior art and will not be elaborated on here).

[0020] Specifically, by passing the end of the diaphragm through the power roller 8 and the portable pressure wheel 9, when the staff turns on the button 10, the power roller 8 rotates to drive the diaphragm forward, and then the portable pressure wheel 9 presses the diaphragm thickness test sample to ensure that the diaphragm can fully contact with the power roller 8, thereby achieving the effect of moving the diaphragm forward.

[0021] Comparative Example 1

[0022] The same tester used a lithium battery diaphragm thickness automatic test device and a manual test device to test the same 3 rolls of diaphragm thickness samples. The test time was compared: the lithium battery diaphragm thickness automatic test device saved 30% of the test time than the manual test device; the test result feedback: in the equidistant test, the lithium battery diaphragm thickness automatic test device had better MSA measurement system analysis repeatability than the manual test device.

[0023] The working principle and use process of the utility model are as follows: first, the pedal switch 12 is stepped on to lift the detection probe 5, and the diaphragm is placed flat on the support platform 2, and moved to the left so that the diaphragm is between the power roller 8 and the portable pressure wheel 9, and the pedal switch 12 is released. At this time, the distance between the detection probe 5 and the support platform 2 is the thickness size of the lithium battery diaphragm. At this time, the signal of the pedal switch 12 can be synchronously transmitted to the power roller 8 by the start button 10, and the pedal switch 12 is stepped on again, the detection probe 5 is lifted, and the power roller 8 starts to rotate, driving the diaphragm to move to the left, and the pedal switch 12 is released, the power roller 8 stops rotating, and the detection probe 5 falls. At this time, the display 11 is connected to the detection probe 5, and the thickness test value is displayed on the display 11. The display 11 is connected to the computer, and the test data is directly uploaded to the computer; in this way, the entire test process can cancel the manual movement of the diaphragm and the recording of thickness data.

[0024] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0025] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A lithium battery diaphragm thickness automatic testing device, comprising a base (1), characterized in that: A support platform (2) for placing the diaphragm is installed at the upper end of the base (1); a detection probe (5) for testing the thickness of the diaphragm is arranged above the support platform (2), and the detection probe (5) is fixed above the support platform (2) through a bracket; a power roller (8) and a hand-held pressure wheel (9) for use in conjunction with and driving the diaphragm to move are installed above the base (1); the power roller (8) and the hand-held pressure wheel (9) are installed on the base (1) through a control console (7).

2. The automatic testing device for lithium battery diaphragm thickness according to claim 1, characterized in that: The bracket comprises a detection support rod (3) vertically mounted on the upper end surface of the support platform (2); a detection support frame (4) is mounted on the outer peripheral surface of the detection support rod (3); and a detection probe (5) is mounted on the end of the detection support frame (4).

3. The automatic testing device for lithium battery diaphragm thickness according to claim 1, characterized in that: A bottom plate (6) is installed on the upper end surface of the base (1) at a position on the side of the support platform (2), and a power roller (8) and a hand-held pressure wheel (9) are located directly above the bottom plate (6).

4. The automatic testing device for lithium battery diaphragm thickness according to claim 1, characterized in that: A button (10) for controlling the rotation direction and rotation speed of the power roller (8) is installed on the front end surface of the base (1).

5. The automatic testing device for lithium battery diaphragm thickness according to claim 1, characterized in that: The detection probe (5) is connected to a display (11), and the detection probe (5) is connected to a probe lifting pedal switch (12) for controlling the lifting and lowering of the detection probe (5).

6. The automatic testing device for lithium battery diaphragm thickness according to claim 2, characterized in that: The detection support rod (3) and the detection support frame (4) are both made of marble.

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