A detection device

Abstract

The application discloses a detection device and relates to the technical field of battery production.The detection device comprises a base, a first support, a conductive assembly and a detection piece.The first support is connected to one side of the base along a third direction and is used for mounting a diaphragm roll.The diaphragm roll can rotate relative to the first support so that the diaphragm is stretched along a first direction.The conductive assembly is arranged on the side of the base provided with the first support and has a gap penetrating along the first direction and used for allowing the diaphragm to pass through.The detection piece is electrically connected with the conductive assembly so as to apply a voltage to the diaphragm.Workers can stretch the diaphragm at any position in the diaphragm roll according to requirements, then pass the diaphragm in the region into the gap of the conductive assembly, apply a voltage to the diaphragm in the region by the detection piece and perform insulation voltage resistance test.Compared with the related art, the diaphragm in the diaphragm roll does not need to be cut, and the operation is simpler.The diaphragm cut off will not be wasted, and the cost is saved.

Description

Technical Field

[0001] This application belongs to the field of battery production technology, specifically relating to a testing device. Background Technology

[0002] A battery cell is generally formed by stacking or winding a positive electrode, a separator, and a negative electrode. The separator not only provides insulation between the positive and negative electrodes, but its micropores also create shuttle channels for lithium or sodium ions when immersed in the electrolyte, ensuring the normal conduction of the electrochemical reaction. The performance of the separator directly determines the battery's safety, cycle life, and power performance.

[0003] Generally speaking, the separators prepared by separator manufacturers are in rolls. When they are delivered to battery manufacturers, a portion of the separator roll is usually cut off for inspection. However, this operation is cumbersome and the cut-off separators will be wasted. Utility Model Content

[0004] This application aims to provide a testing device that at least solves one of the problems of cumbersome operation and waste of the cut-off diaphragm during diaphragm sampling inspection.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application propose a detection device having a first direction and a third direction perpendicular to each other, comprising: a base, a first support, a conductive component, and a detection element. The first support is connected to one side of the base along the third direction and is used to mount a diaphragm roll. The diaphragm roll is rotatable relative to the first support to allow the diaphragm to extend along the first direction. The conductive component is placed on the side of the base where the first support is located. The conductive component has a gap extending along the first direction for the diaphragm to pass through. The detection element is electrically connected to the conductive component to apply a voltage to the diaphragm.

[0006] Optionally, the conductive component includes a first conductive element and a second conductive element, the first conductive element and the second conductive element are spaced apart along the third direction, and the gap is formed between the first conductive element and the second conductive element; The detection element has a first electrode and a second electrode, the first electrode being electrically connected to a first conductive element and the second electrode being electrically connected to a second conductive element, so as to apply a voltage to the diaphragm.

[0007] Optionally, the first conductive element includes a first metal layer and a first active material layer, the first metal layer being electrically connected to the first electrode, and the first active material layer being disposed on the side of the first metal layer facing the second conductive element; The second conductive element includes a second metal layer and a second active material layer. The second metal layer is electrically connected to the second electrode. The second active material layer is disposed on the side of the second metal layer facing the first conductive element. The gap is formed between the first active material layer and the second active material layer.

[0008] Optionally, the second metal layer is disposed on the side of the base where the first support is located, and the first metal layer is disposed on the side of the second metal layer away from the base; the first conductive element further includes a first insulating layer, which is disposed on the side of the first metal layer away from the second metal layer.

[0009] Optionally, the first support includes a first support member and a first connecting rod. The first support member is connected to one side of the base along the third direction, and the first connecting rod is connected to the first support member. The first connecting rod is used for the diaphragm roll to be fitted, and the diaphragm roll is rotatable relative to the first support member.

[0010] Optionally, the first connecting rod is rotatably connected to the first support member, and the first connecting rod rotates relative to the first support member to drive the diaphragm roll to rotate.

[0011] Optionally, the detection device further includes a second support, which is spaced apart from the first support along the first direction. The second support is connected to the base and is used for winding the diaphragm.

[0012] Optionally, the second support includes a second support member and a second connecting rod. The second support member is spaced apart from the first support member along the first direction. The second support member is connected to the base. The second connecting rod is rotatably connected to the second support member. The second connecting rod is used for winding the diaphragm.

[0013] Optionally, the second bracket further includes a driving member, which is mounted on the second support member and drives the second connecting rod to rotate relative to the second support member, thereby driving the diaphragm to wind.

[0014] Optionally, the base includes a main body and a second insulating layer, the second insulating layer being disposed on the side of the main body facing the conductive component, the main body being connected to the first bracket, and the conductive component being disposed on the side of the second insulating layer away from the main body; Alternatively, the base may have insulating properties.

[0015] In embodiments of this application, the detection device has a first direction and a third direction perpendicular to each other, including: a base, a first support, a conductive component, and a detection element; the first support is connected to one side of the base along the third direction, and is used to mount a diaphragm roll, which can rotate relative to the first support to extend the diaphragm along the first direction; the conductive component is placed on the side of the base where the first support is located, and has a gap extending along the first direction for the diaphragm to pass through; the detection element is electrically connected to the conductive component to apply voltage to the diaphragm; thus, the operator can extend the diaphragm from any part of the diaphragm roll as needed, and then insert the diaphragm of that area into the gap of the conductive component, apply voltage to the diaphragm of that area through the detection element, and perform an insulation withstand voltage test; compared with related technologies, this application does not require cutting the diaphragm in the diaphragm roll, making the operation simpler; and it does not cause waste of the cut diaphragm, saving costs.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a detection device according to an embodiment of this application; Figure 2 This is a cross-sectional view of a conductive component according to an embodiment of this application.

[0018] Figure label: 1: Base; 11: Main body; 12: Second insulating layer; 2: First bracket; 21: First support member; 22: First connecting rod; 3: Diaphragm roll; 31: Diaphragm; 4: Conductive component; 41: First conductive element; 411: First metal layer; 412: First active material layer; 413: First insulating layer; 42: Second conductive element; 421: Second metal layer; 422: Second active material layer; 5: Detection element; 51: First electrode; 52: Second electrode; 6: Second bracket; 61: Second support member; 62: Second connecting rod; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0019] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] like Figure 1 and Figure 2As shown, the detection device according to some embodiments of this application has a first direction X and a third direction Z that are perpendicular to each other. The detection device includes: a base 1, a first support 2, a conductive component 4, and a detection element 5. The first support 2 is connected to one side of the base 1 along the third direction Z. The first support 2 is used to mount a diaphragm roll 3. The diaphragm roll 3 is rotatable relative to the first support 2 so that the diaphragm 31 extends along the first direction X. The conductive component 4 is placed on the side of the base 1 where the first support 2 is located. The conductive component 4 has a gap 40 that extends along the first direction X and is used for the diaphragm 31 to pass through. The detection element 5 is electrically connected to the conductive component 4 to apply a voltage to the diaphragm 31.

[0024] In this embodiment, the diaphragm roll 3 can rotate relative to the first support 2 so that the diaphragm 31 extends along the first direction X. Thus, the operator can rotate the diaphragm roll 3 as needed to expose any part of the diaphragm 31 in the diaphragm roll and insert it into the gap 40. The conductive component 4 is energized through the detection element 5, and then the insulation withstand voltage test of the diaphragm 31 in the gap 40 is performed. Therefore, there is no need to cut the diaphragm roll 3, making the operation more convenient and avoiding waste of the cut diaphragm 31, thus saving testing costs.

[0025] It should be explained that the detection device has a first direction X, a second direction Y, and a third direction Z that are perpendicular to each other. The first direction X specifically refers to the length direction of the detection device, the second direction Y specifically refers to the width direction of the detection device, and the third direction Z specifically refers to the height direction of the detection device. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. Specifically, they can be "perpendicular" in the strict sense, that is, the angle between any two of the three directions is 90°, or they can be "approximately perpendicular", that is, the angle between any two of the three directions is 90±5°. This will not be elaborated further.

[0026] In a specific application, the first support 2 is connected to the base 1 on one side along the third direction Z. The diaphragm roll 3 is mounted on the first support 2 and can rotate relative to the first support 2, so that the diaphragm 31 wound in the diaphragm roll 3 can be extended along the first direction X. Thus, the operator can insert any part of the extended diaphragm 31 into the gap 40 as needed to perform an insulation withstand voltage test. The first support 2 is connected to the base 1, which can be a fixed connection, a detachable connection, etc. Those skilled in the art can set it according to actual needs, and this application does not limit it.

[0027] It should be explained that, for ease of transportation and space saving, the manufacturer winds the diaphragm 31 onto a sleeve to form a diaphragm roll 3 when the diaphragm 31 leaves the factory. The sleeve has a through hole extending along the second direction Y. The sleeve in the diaphragm roll 3 is fitted onto the first support 2 and can rotate relative to the first support 2 under manual or mechanical action, thereby extending the diaphragm 31 inside the diaphragm roll 3, making it easier for operators to select the part to be tested.

[0028] Understandably, the test piece 5 is specifically an insulation withstand voltage tester. The test piece 5 is electrically connected to the conductive component 4. The gap 40 inside the conductive component 4 allows the diaphragm 31 to pass through, so that the conductive component 4 can simulate the actual working conditions of the diaphragm 31 to ensure the accuracy of the test.

[0029] In a specific application, the conductive component 4 is placed on the side of the base 1 where the first support 2 is located. The conductive component 4 can be moved as needed. The conductive component 4 has a gap 40 that runs through the first direction X, so that the conductive component 4 can simulate the positive and negative electrode plates in the battery cell (the separator 31 in the battery cell is located between the positive and negative electrode plates). Thus, after the detection element 5 energizes the conductive component 4, the separator 31 in the gap 40 can be tested for insulation withstand voltage.

[0030] Specifically, the conductive component 4 has a first part and a second part along the third direction Z, with a gap 40 formed between the first part and the second part. The first part and the second part are insulated from each other. The positive electrode of the detection element 5 is electrically connected to the first part, and the negative electrode of the detection element 5 is electrically connected to the second part, thereby forming a stable electric field at both ends of the diaphragm 31. When there are defects (such as holes, cracks, metal impurities, etc.) in the diaphragm 31 within the gap 40, the diaphragm 31 will be partially broken down or corona discharged. The operator can observe this on the detection element 5, thereby determining that the diaphragm 31 of the diaphragm roll 3 is of unqualified quality, thus enabling early identification of risks. Alternatively, the diaphragm 31 prepared into a battery cell can be disassembled and tested. Since there are multiple diaphragms 31 inside the battery cell, each disassembled diaphragm 31 can be inserted into the gap 40 for insulation withstand voltage testing, thereby detecting which diaphragm 31 has a quality problem, thus enabling analysis and tracing of the quality problem, and reducing batch defects in the prepared battery cells.

[0031] It should be noted that the specific value of the voltage applied to the diaphragm 31 in the gap 40 after the detection element 5 and the conductive component 4 are energized depends on the specifications of the diaphragm 31. Those skilled in the art can select according to actual needs, and this application does not impose any restrictions on this.

[0032] like Figure 1 and Figure 2As shown, in some embodiments of this application, the conductive component 4 includes a first conductive element 41 and a second conductive element 42, the first conductive element 41 and the second conductive element 42 are spaced apart along a third direction Z, and a gap 40 is formed between the first conductive element 41 and the second conductive element 42; the detection element 5 has a first electrode 51 and a second electrode 52, the first electrode 51 is electrically connected to the first conductive element 41, and the second electrode 52 is electrically connected to the second conductive element 42 to apply a voltage to the diaphragm 31.

[0033] In this embodiment, the first electrode 51 is electrically connected to the first conductive element 41, and the second electrode is electrically connected to the second conductive element 42, thereby performing an insulation withstand voltage test on the diaphragm 31 between the first conductive element 41 and the second conductive element 42. This better reflects the actual working conditions of the diaphragm 31 and improves the accuracy of the test.

[0034] In specific applications, the first conductive element 41 and the second conductive element 42 can be metal sheets or positive and negative electrode sheets, as long as they can form a stable electric field and facilitate the formation of a gap 40 for the diaphragm 31 to pass through. Those skilled in the art can make the selection according to actual needs, and this application does not impose any restrictions on this.

[0035] It should be noted that the detection element 5 has a first electrode 51 and a second electrode 52. The first electrode 51 can be a negative electrode connection terminal, and the second electrode 52 can be a positive electrode connection terminal. Taking the first conductive element 41 as the negative electrode and the second conductive element 42 as the positive electrode as an example: the first electrode 51 (negative electrode connection terminal) of the detection element 5 is electrically connected to the negative electrode (the tab of the negative electrode), and the second electrode 52 (positive electrode connection terminal) of the detection element 5 is electrically connected to the positive electrode (the tab of the positive electrode), thereby completely simulating the actual working conditions of the diaphragm 31, thereby improving the accuracy of the insulation withstand voltage test results of the diaphragm 31.

[0036] like Figure 2 As shown, in some embodiments of this application, the first conductive element 41 includes a first metal layer 411 and a first active material layer 412. The first metal layer 411 is electrically connected to the first electrode 51, and the first active material layer 412 is disposed on the side of the first metal layer 411 facing the second conductive element 42. The second conductive element 42 includes a second metal layer 421 and a second active material layer 422. The second metal layer 421 is electrically connected to the second electrode 52, and the second active material layer 422 is disposed on the side of the second metal layer 421 facing the first conductive element 41. A gap 40 is formed between the first active material layer 412 and the second active material layer 422.

[0037] In this embodiment, the first active material layer 412 is disposed on the side of the first metal layer 411 facing the second conductive element 42, so that the first conductive element 41 can simulate the negative electrode (or positive electrode) adjacent to the separator 31 in the battery cell. The second active material layer 422 is disposed on the side of the second metal layer 421 facing the first conductive element 41, so that the second conductive element 42 can simulate the positive electrode (or negative electrode) adjacent to the separator 31 in the battery cell. This allows the separator 31 in the gap 40 to have its test conditions as close as possible to the actual working conditions of the separator 31 during the insulation withstand voltage test, thereby improving the accuracy of the test.

[0038] In specific applications, the first metal layer 411 can be a copper foil, and the first active material layer 412 can be a negative electrode active material (e.g., carbon material, silicon-based material, or lithium metal), so that the first metal layer 411 and the first active material layer 412 can simulate a negative electrode sheet; the second metal layer 421 can be an aluminum foil, and the second active material layer 422 can be a positive electrode active material (e.g., lithium-containing transition metal oxide or polyanionic compound), so that the second metal layer 421 and the second active material layer 422 can simulate a positive electrode sheet; of course, the first conductive element 41 can simulate a positive electrode sheet, and the second conductive element 42 can simulate a negative electrode sheet; those skilled in the art can make the settings according to actual needs.

[0039] It should be noted that the first metal layer 411 is electrically connected to the first electrode 51, specifically the portion of the first metal layer 411 not coated with the first active material layer 412 is electrically connected to the first electrode 51, and the second metal layer 421 is electrically connected to the second electrode 52, specifically the portion of the second metal layer 421 not coated with the second active material layer 422 is electrically connected to the second electrode 52.

[0040] Understandably, the preparation method of the first conductive element 41 can be the same as the preparation method of the negative electrode, and the specifications of the first conductive element 41 can also be the same as the specifications of the negative electrode; the preparation method of the second conductive element 42 can be the same as the preparation method of the positive electrode, and the specifications of the second conductive element 42 can also be the same as the specifications of the positive electrode.

[0041] Understandably, such as Figure 2 As shown, a gap 40 is formed between the first active material layer 412 and the second active material layer 422, so that along the third direction Z, the first metal layer 411, the first active material layer 412, the diaphragm 31 (located in the gap 40), the second active material layer 422 and the second metal layer 421 are arranged in sequence, thereby making the test environment of the diaphragm 31 closer to the actual working conditions of the diaphragm 31.

[0042] like Figure 2As shown, in some embodiments of this application, the second metal layer 421 is placed on the side of the base 1 where the first support 2 is provided, and the first metal layer 411 is disposed on the side of the second metal layer 421 away from the base 1; the first conductive element 41 further includes a first insulating layer 413, which is disposed on the side of the first metal layer 411 away from the second metal layer 421.

[0043] In this embodiment, the second metal layer 421 is placed on the base 1, and the first insulating layer 413 disposed on the side of the first metal layer 411 away from the second metal layer 421 can form an insulating protection for the exposed part (first metal layer 411) of the conductive component 4, reducing the possibility of workers accidentally touching the conductive part of the conductive component 4, thereby improving the safety of the detection device.

[0044] In specific applications, the first insulating layer 413 can cover the side of the first metal layer 411 facing away from the second metal layer 421, thereby reducing the possibility of workers accidentally touching the first metal layer 411 during operation; of course, the first insulating layer 413 can also cover the circumferential end face of the first metal layer 411 to further improve the insulation performance; similarly, a third insulating layer can also be provided on the side of the second metal layer 421 facing the base 1 and on the circumferential end face, thereby reducing the possibility of workers coming into contact with the conductive part of the conductive component 4.

[0045] Understandably, the first insulating layer 413 may specifically be insulating tape, insulating adhesive, insulating sheet made of insulating material, etc., as long as it can form an insulating protection for the first metal layer 411. Those skilled in the art can choose according to actual needs, and this application does not impose any restrictions on it.

[0046] like Figure 1 As shown, in some embodiments of this application, the first support 2 includes a first support member 21 and a first connecting rod 22. The first support member 21 is connected to one side of the base 1 along the third direction Z. The first connecting rod 22 is connected to the first support member 21. The first connecting rod 22 is used for the diaphragm roll 3 to be sleeved. The diaphragm roll 3 can rotate relative to the first support member 21.

[0047] In this embodiment, the first connecting rod 22 is connected to the first support member 21 and can be fitted with the diaphragm roll 3 (the sleeve of the diaphragm roll 3 is fitted on the first connecting rod 22). Thus, the operator can pull the diaphragm 31 on the diaphragm roll 3, thereby causing the diaphragm roll 3 (the sleeve inside the diaphragm roll 3) to rotate relative to the first support member 21. This allows the diaphragm 31 wound inside the diaphragm roll 3 to be unwound, thereby allowing the diaphragm 31 at any point inside the diaphragm roll 3 to be inspected. This increases the random probability of sampling and ensures the actual inspection effect of the sampling.

[0048] In specific applications, the first connecting rod 22 can be fixedly connected to the first support member 21, so that the diaphragm roll 3 (the sleeve of the diaphragm roll 3) can rotate relative to the first connecting rod 22; or the first connecting rod 22 can be rotatably connected to the first support member 21, so that the sleeve of the diaphragm roll 3 is engaged with the first connecting rod 22, so that the diaphragm roll 3 can rotate relative to the first support member 21, so that the diaphragm 31 can unfold along the first direction X.

[0049] It should be noted that the first support member 21 extends along the third direction Z, and the first connecting rod 22 extends along the second direction Y. Specifically, the first support member 21 can be integrally formed with the base 1, or it can be separately formed and connected together by bolt connection, adhesive connection, snap-fit ​​connection or other methods.

[0050] like Figure 1 As shown, in some embodiments of this application, the first connecting rod 22 is rotatably connected to the first support member 21, and the first connecting rod 22 rotates relative to the first support member 21 to drive the diaphragm roll 3 to rotate.

[0051] In this embodiment, by setting the first connecting rod 22 to rotate relative to the first support member 21, the diaphragm roll 3 can be driven to rotate, which facilitates operation and reduces the wear of the diaphragm roll 3 (the sleeve of the diaphragm roll 3).

[0052] In specific applications, the first connecting rod 22 can be snapped together with the diaphragm roll 3 (the sleeve of the diaphragm roll 3) or connected by interference fit, as long as the diaphragm roll 3 does not rotate relative to the first connecting rod 22. Those skilled in the art can make the settings according to actual needs, and this application does not impose any restrictions on this.

[0053] Understandably, the first bracket 2 also includes a drive motor, which is located inside the first support member 21. The first connecting rod 22 is fixedly connected to the output end of the drive motor. The drive motor drives the first connecting rod 22 to rotate, thereby facilitating the unfolding of the diaphragm roll 3 and improving the convenience of the detection device.

[0054] like Figure 1 As shown, in some embodiments of this application, the detection device further includes a second support 6, which is spaced apart from the first support 2 along the first direction X. The second support 6 is connected to the base 1 and is used for winding the diaphragm 31.

[0055] In this embodiment of the application, by providing a second support 6 opposite to the first support 2 on the base 1, the extended diaphragm 31 can be wound, thereby improving the cleanliness of the detection device and reducing the risk of the diaphragm 31 being worn and contaminated on the base 1.

[0056] In a specific application, the second support 6 and the first support 2 are spaced apart along the first direction X, so that after the diaphragm 31 in the diaphragm roll 3 is extended along the first direction X, it can extend onto the second support 6. The sleeve is installed on the second support 6, and the extended diaphragm 31 can be rewound onto the sleeve.

[0057] Understandably, the second bracket 6 can be integrally formed with the base 1 or separately formed. When the second bracket 6 is separately formed from the base 1, the second bracket 6 can be connected to the base 1 by means of bolt connection, adhesive bonding, snap-fit ​​connection, welding connection, etc.

[0058] like Figure 2 As shown, in some embodiments of this application, the second support 6 includes a second support member 61 and a second connecting rod 62. The second support member 61 and the first support 2 are spaced apart along the first direction X. The second support member 61 is connected to the base 1, and the second connecting rod 62 is rotatably connected to the second support member 61. The second connecting rod 62 is used for winding the diaphragm 31.

[0059] In this embodiment, by setting the second connecting rod 62 to the second support member 61, it is easy to rewind the extended diaphragm 31, thereby improving the convenience of the detection device.

[0060] In specific applications, the second connecting rod 62 can be connected to the sleeve by snap-fit ​​or interference fit, as long as the sleeve does not rotate relative to the second connecting rod 62, so that the diaphragm 31 can be easily rewound onto the sleeve. Those skilled in the art can make the settings according to actual needs, and this application does not limit them.

[0061] like Figure 1 As shown, in some embodiments of this application, the second bracket 6 further includes a driving member (not shown in the figure), which is mounted on the second support member 61. The driving member drives the second connecting rod 62 to rotate relative to the second support member 61, so as to drive the diaphragm 31 to be wound.

[0062] In this embodiment, by setting a driving component to drive the second connecting rod 62 to rotate, it is easy to rewind the unfolded diaphragm 31, which improves the convenience of operation and enhances the operability of the detection device.

[0063] In specific applications, the driving component can be a motor, cylinder, or other parts that can drive the second connecting rod 62 to rotate. Those skilled in the art can choose according to actual needs, and this application does not impose any restrictions on this.

[0064] Preferably, the driving component is a micro motor, which is mounted on the second support 61. The driving end of the micro motor is fixedly connected to the second connecting rod 62. The micro motor can drive the second connecting rod 62 to rotate, thereby driving the diaphragm 31 to be rewound.

[0065] like Figure 1 As shown, in some embodiments of this application, the base 1 includes a main body 11 and a second insulating layer 12. The second insulating layer 12 is disposed on the side of the main body 11 facing the conductive component 4. The main body 11 is connected to the first bracket 2. The conductive component 4 is placed on the side of the second insulating layer 12 away from the main body 11. Alternatively, the base 1 has insulating properties.

[0066] In this embodiment of the application, by providing a second insulating layer 12 on the side of the main body 11 of the base 1 facing the conductive component 4, or by making the base 1 as a whole have insulating properties, the possibility of short-circuiting of the conductive component 4 during detection can be reduced, thereby improving the overall insulation performance of the detection device.

[0067] In specific applications, the base 1 can be provided with insulating properties. For example, the base 1 can be made of insulating materials such as plastic, rubber, or marble. Alternatively, a second insulating layer 12 can be provided on the side of the main body 11 of the base 1 facing the conductive component 4. The second insulating layer 12 can be formed by insulating glue, insulating tape, powder coating, etc., as long as it can form an insulating barrier between the main body 11 and the conductive component 4. Those skilled in the art can choose according to actual needs, and this application does not limit it.

[0068] Understandably, the main body 11 of the base 1 serves as a platform for supporting the conductive components 4, the first support 2, the detection element 5, and the second support 6, which are disposed on the main body 11 and the second insulating layer 12. Its specific specifications are determined according to actual needs, and this application does not impose any restrictions on them.

[0069] It should be noted that the second insulating layer 12 may cover the entire surface of the main body 11 facing the conductive component 4, or it may cover only a portion of the surface.

[0070] Specifically, the main body 11 may be integrally formed with the first support member 21 and the second support member 61, thereby facilitating processing.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A detection device having a first direction (X) and a third direction (Z) that are perpendicular to each other, characterized in that, include: Base (1); A first support (2) is connected to the base (1) on one side along the third direction (Z). The first support (2) is used to install a diaphragm roll (3). The diaphragm roll (3) is rotatable relative to the first support (2) so that the diaphragm (31) extends along the first direction (X). A conductive component (4) is placed on the side of the base (1) where the first support (2) is provided. The conductive component (4) has a gap (40) extending along the first direction (X) for the diaphragm (31) to pass through. The detection element (5) is electrically connected to the conductive component (4) to apply a voltage to the diaphragm (31).

2. The detection device according to claim 1, characterized in that, The conductive component (4) includes a first conductive element (41) and a second conductive element (42), the first conductive element (41) and the second conductive element (42) are spaced apart along the third direction (Z), and the gap (40) is formed between the first conductive element (41) and the second conductive element (42). The detection element (5) has a first electrode (51) and a second electrode (52), the first electrode (51) being electrically connected to the first conductive element (41), and the second electrode (52) being electrically connected to the second conductive element (42) to apply a voltage to the diaphragm (31).

3. The detection device according to claim 2, characterized in that, The first conductive element (41) includes a first metal layer (411) and a first active material layer (412). The first metal layer (411) is electrically connected to the first electrode (51), and the first active material layer (412) is disposed on the side of the first metal layer (411) facing the second conductive element (42). The second conductive element (42) includes a second metal layer (421) and a second active material layer (422). The second metal layer (421) is electrically connected to the second electrode (52). The second active material layer (422) is disposed on the side of the second metal layer (421) facing the first conductive element (41). The gap (40) is formed between the first active material layer (412) and the second active material layer (422).

4. The detection device according to claim 3, characterized in that, The second metal layer (421) is placed on the side of the base (1) where the first support (2) is located, and the first metal layer (411) is located on the side of the second metal layer (421) away from the base (1); the first conductive element (41) further includes a first insulating layer (413), which is located on the side of the first metal layer (411) away from the second metal layer (421).

5. The detection device according to any one of claims 1-4, characterized in that, The first support (2) includes a first support member (21) and a first connecting rod (22). The first support member (21) is connected to one side of the base (1) along the third direction (Z). The first connecting rod (22) is connected to the first support member (21). The first connecting rod (22) is used for the diaphragm roll (3) to be sleeved. The diaphragm roll (3) is rotatable relative to the first support member (21).

6. The detection device according to claim 5, characterized in that, The first connecting rod (22) is rotatably connected to the first support member (21), and the first connecting rod (22) rotates relative to the first support member (21) to drive the diaphragm roll (3) to rotate.

7. The detection device according to claim 6, characterized in that, The detection device further includes a second support (6), which is spaced apart from the first support (2) along the first direction (X). The second support (6) is connected to the base (1) and is used for winding the diaphragm (31).

8. The detection device according to claim 7, characterized in that, The second support (6) includes a second support member (61) and a second connecting rod (62). The second support member (61) and the first support (2) are spaced apart along the first direction (X). The second support member (61) is connected to the base (1). The second connecting rod (62) is rotatably connected to the second support member (61). The second connecting rod (62) is used for winding the diaphragm (31).

9. The detection device according to claim 8, characterized in that, The second bracket (6) also includes a drive member, which is mounted on the second support member (61). The drive member drives the second connecting rod (62) to rotate relative to the second support member (61) so as to drive the diaphragm (31) to be wound.

10. The detection device according to claim 1, characterized in that, The base (1) includes a main body (11) and a second insulating layer (12). The second insulating layer (12) is disposed on the side of the main body (11) facing the conductive component (4). The main body (11) is connected to the first bracket (2). The conductive component (4) is placed on the side of the second insulating layer (12) away from the main body (11). Alternatively, the base (1) has insulating properties.

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