Pit depth detection device and battery production line

Abstract

The utility model relates to the technical field of battery production, in particular to a pit depth detection device and a battery production line. The pit depth detection device comprises a reference platform, a measuring part and a support assembly, the reference platform comprises a reference surface, the measuring part is connected with the reference platform, scale marks arranged in the first direction are arranged on the measuring part, the support assembly is slidably connected with the measuring part and can move in the first direction, and the support assembly comprises a fixing part. The fixing piece comprises a first part and a second part which are connected with each other, the first part is provided with a first mounting hole, the second part is provided with a first through hole, the first through hole is communicated with the first mounting hole, the surface, deviating from the first part, of the second part can be attached to a to-be-detected workpiece, and the first through hole is communicated with a to-be-detected pit of the to-be-detected workpiece; the flowing-in hot melt adhesive can be cured in the pit to be measured and form a profiling structure, and the size of the pit profiling piece in the first direction is detected, so that the accurate measurement of the depth of the pit is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, and in particular to a pit depth detection device and a battery production line. BACKGROUND

[0002] This part provides only background information related to the present disclosure, which is not necessarily prior art.

[0003] With the increasing maturity of new energy technology, electric devices such as new energy vehicles have gradually entered the public view. The main core technology of new energy vehicles lies in battery devices, and the safety and stability of battery devices directly determine the performance of the whole vehicle.

[0004] In the production process of the battery device, the surface of the pole column is prone to defects such as pits, and the depth of the pit needs to be detected to screen out unqualified products. In the prior art, a probe is usually used to test the depth of the pit, but due to the structure and size limitation, the probe cannot accurately detect the depth of the pit. Utility model content

[0005] In view of the above problems, the present application provides a pit depth detection device and a battery production line, which solves the problem that the depth of the pit cannot be accurately detected in the prior art.

[0006] The first aspect of the embodiments of the present application proposes a pit depth detection device, comprising:

[0007] A reference platform, the reference platform comprising a reference surface;

[0008] A measuring member connected with the reference platform, and a scale line provided on the measuring member in a first direction, the first direction intersecting the reference surface; and

[0009] A support assembly in sliding connection with the measuring member and movable in the first direction;

[0010] The support assembly comprises a fixing member comprising a first part and a second part connected with each other, wherein the first part is provided with a first mounting hole, and the second part is provided with a first through hole in communication with the first mounting hole;

[0011] The surface of the second part away from the first part can be arranged in close contact with the workpiece to be measured, and the first through hole is in communication with the pit to be measured of the workpiece to be measured, and the side of the first mounting hole away from the first through hole is supplied with hot melt adhesive, the hot melt adhesive flowing in can be solidified in the pit to be measured and form a profiling structure, the profiling structure comprising a pit profiling member and a glue body arranged integrally, wherein the glue body is arranged in the first through hole, and the pit profiling member is formed in the pit to be measured.

[0012] The pit depth detection device of the embodiment of the present application comprises a reference platform, a measuring piece and a support assembly, wherein the measuring piece is connected with the reference platform, the measuring piece is provided with a scale line arranged along a first direction, and the first direction intersects with the reference surface; the support assembly is in sliding connection with the measuring piece and can move along the first direction; the support assembly comprises a fixing piece, and the fixing piece comprises a first part and a second part connected with each other, wherein the first part is provided with a first mounting hole, the second part is provided with a first through hole, and the first through hole is in communication with the first mounting hole; the surface of the second part away from the first part can be arranged in abutment with the workpiece to be measured, and the first through hole is in communication with the pit to be measured of the workpiece to be measured, and the side of the first mounting hole away from the first through hole is used for flowing in hot melt adhesive, the hot melt adhesive flowing in can be solidified in the pit to be measured and form a profiling structure, and the profiling structure comprises a pit profiling piece and a glue body arranged integrally, wherein the glue body is arranged in the first through hole, so that the pit profiling piece can be in contact with the reference surface at one end thereof along the first direction by moving the support assembly along the first direction, and then the corresponding scale line position of the other end of the pit profiling piece along the first direction can be read through the scale line, so that the size of the pit profiling piece along the first direction is detected, and accurate measurement of the depth of the pit is realized.

[0013] In some embodiments of the present application, the first through hole comprises at least two sub-through holes arranged in sequence along the first direction, and the sizes of the at least two sub-through holes are different.

[0014] In some embodiments of the present application, the first through hole comprises at least two sub-through holes arranged in sequence along the first direction, and the sizes of the at least two sub-through holes are different.

[0015] In some embodiments of the present application, the at least two sub-through holes comprise a first sub-through hole and a second sub-through hole arranged coaxially, wherein the second sub-through hole is arranged between the first sub-through hole and the first mounting hole, the size of the second sub-through hole is smaller than that of the first sub-through hole along a second direction, and the second direction intersects with the first direction.

[0016] The embodiment of the present application comprises a coaxially arranged first sub-through hole and a second sub-through hole by at least two sub-through holes, wherein the second sub-through hole is arranged between the first sub-through hole and the first mounting hole, the size of the second sub-through hole is smaller than that of the first sub-through hole along the second direction, the second direction intersects the first direction, the posture of the dimple profiling part can be limited by the colloid in the second sub-through hole and the first sub-through hole, compared with the single through hole structure, the rotation, skew and displacement of the dimple profiling part can be reduced, and the test accuracy of the dimple profiling part is improved.

[0017] In some embodiments of the present application, the at least two sub-through holes further comprise a third sub-through hole arranged between the second sub-through hole and the first mounting hole, wherein the third sub-through hole is in the shape of an inverted circular truncated cone, the second sub-through hole is in the shape of a cylinder, and the first sub-through hole is in the shape of a cylinder.

[0018] The embodiment of the present application comprises a coaxially arranged first sub-through hole and a second sub-through hole by at least two sub-through holes, wherein the second sub-through hole is arranged between the first sub-through hole and the first mounting hole, the size of the second sub-through hole is smaller than that of the first sub-through hole along the second direction, the second direction intersects the first direction, the posture of the dimple profiling part can be limited by the colloid in the second sub-through hole and the first sub-through hole, compared with the single through hole structure, the rotation, skew and displacement of the dimple profiling part can be reduced, and the test accuracy of the dimple profiling part is improved.

[0019] In some embodiments of the present application, the taper of the third sub-through hole ranges from 5 degrees to 40 degrees.

[0020] The embodiment of the present application comprises a coaxially arranged first sub-through hole and a second sub-through hole by at least two sub-through holes, wherein the second sub-through hole is arranged between the first sub-through hole and the first mounting hole, the size of the second sub-through hole is smaller than that of the first sub-through hole along the second direction, the second direction intersects the first direction, the posture of the dimple profiling part can be limited by the colloid in the second sub-through hole and the first sub-through hole, compared with the single through hole structure, the rotation, skew and displacement of the dimple profiling part can be reduced, and the test accuracy of the dimple profiling part is improved.

[0021] In some embodiments of the present application, the support assembly further comprises a support body and a plug-in part, the plug-in part is connected with the fixing part, and the plug-in part is plug-in matched with the support body and can move relative to the support body along the second direction, the second direction intersects the first direction.

[0022] The embodiment of the present application comprises a coaxially arranged first sub-through hole and a second sub-through hole by at least two sub-through holes, wherein the second sub-through hole is arranged between the first sub-through hole and the first mounting hole, the size of the second sub-through hole is smaller than that of the first sub-through hole along the second direction, the second direction intersects the first direction, the posture of the dimple profiling part can be limited by the colloid in the second sub-through hole and the first sub-through hole, compared with the single through hole structure, the rotation, skew and displacement of the dimple profiling part can be reduced, and the test accuracy of the dimple profiling part is improved.

[0023] In some embodiments of the present application, the maximum movement stroke of the plug-in part along the second direction is greater than the maximum size of the fixing part.

[0024] The embodiment of the present application can make the fixing member avoid the influence of the reference platform by making the maximum movement stroke of the plug-in part in the second direction greater than the maximum size of the fixing member, facilitate the second part of the fixing member to be arranged in abutment with the workpiece to be measured away from the surface of the first part, and facilitate the injection of hot melt adhesive into the to-be-measured pit of the workpiece to be measured by using a glue gun and the like.

[0025] In some embodiments of the present application, the plug-in part includes one of the plug-in slot and the plug-in part, the other of the plug-in slot and the plug-in part is arranged on the support body, and the plug-in part is plug-in matched with the plug-in slot.

[0026] The embodiment of the present application can realize the adjustment of the distance between the fixing member and the support body by the cooperation between the plug-in slot and the plug-in part.

[0027] In some embodiments of the present application, at least part of the fixing member is a circular truncated cone structure, and the small end of the circular truncated cone structure faces the reference platform.

[0028] The embodiment of the present application can arrange the small end of the circular truncated cone structure in abutment with the workpiece to be measured, so that the contact surface between the fixing member and the workpiece to be measured is relatively small, thereby reducing the influence of the surface of the workpiece to be measured caused by defects such as distortion, unevenness, and the like, and improving the accuracy of the measurement result of the to-be-measured pit.

[0029] In some embodiments of the present application, the first part is in a cylindrical structure, and at least part of the second part is in an inverted circular truncated cone structure.

[0030] The embodiment of the present application can make the first part have high strength to form stable support for the glue gun, and the small end of the second part can be arranged in abutment with the workpiece to be measured, so that the contact surface between the fixing member and the workpiece to be measured is relatively small, thereby reducing the influence of the surface of the workpiece to be measured caused by defects such as distortion, unevenness, and the like, and improving the accuracy of the measurement result of the to-be-measured pit.

[0031] In some embodiments of the present application, a sliding groove is arranged on the measuring member, the sliding groove extends in the first direction, and the support assembly is slidingly matched with the sliding groove.

[0032] The embodiment of the present application can improve the smoothness of the sliding of the support assembly in the first direction by matching the support assembly with the sliding groove.

[0033] A second aspect of the embodiments of this application provides a battery production line including the pit depth detection device mentioned in the above embodiments.

[0034] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0035] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0036] Figure 1 This application provides a schematic diagram of the structure of a pit depth detection device according to some embodiments;

[0037] Figure 2 for Figure 1 The diagram shows the pit depth detection device from a second-view perspective.

[0038] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of the pit depth detection device shown in the figure along section AA.

[0039] Figure 4 for Figure 3 A magnified schematic diagram of the pit depth detection device at point B shown in the figure;

[0040] Figure 5 for Figure 1 A partial structural schematic diagram of the pit depth detection device shown (neither the fixing parts nor the plug-in parts are shown);

[0041] Figure 6 for Figure 5 The diagram shows the structure of the fastener in operation (with the glue gun and the workpiece to be tested added);

[0042] Figure 7 This is a schematic diagram of the conformal structure after the hot melt adhesive has been cured, as provided in some embodiments of this application.

[0043] The attached figures are labeled as follows:

[0044] 100. Dent depth detection device;

[0045] 10. Reference platform; 11. Reference surface;

[0046] 20, measuring member; 21, scale line; 22, sliding slot;

[0047] 30, support assembly; 31, fixing member; 311, first part; 3111, first mounting hole; 312, second part; 3121, first through hole; 31211, first sub-through hole; 31212, second sub-through hole; 31213, third sub-through hole; 3122, tip end; 32, support body; 321, insertion slot; 33, insertion member; 331, insertion part;

[0048] 200, profiling structure; 201, pit profiling member; 202, glue; 2021, first glue; 2022, second glue; 2023, third glue;

[0049] 300, workpiece to be measured; 301, pit to be measured;

[0050] 400, glue gun;

[0051] Z-Z, first direction;

[0052] Y-Y, second direction;

[0053] X-X, third direction;

[0054] H, height of the pit profiling member. DETAILED DESCRIPTION

[0055] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0057] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0058] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments in accordance with the application.

[0059] In the description of the embodiments of the application, the term“and / or” only means an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character“ / ” herein generally means that the front and rear associated objects have an“or” relationship.

[0060] In the description of the embodiments of the application, the term“a plurality of” means more than two (including two), and similarly, “a plurality of groups” means more than two groups (including two groups), and “a plurality of pieces” means more than two pieces (including two pieces).

[0061] In the description of the embodiments of the application, the technical terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial” and“circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.

[0062] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms“mounting”,“connection”,“connection” and“fixing” and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0063] At present, from the development of market situation, the application of battery apparatus is more and more extensive. The battery apparatus is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, electric vehicles, military equipment and aerospace and other fields. With the continuous expansion of the application field of battery apparatus, the demand of its market is also increasing.

[0064] The battery apparatus related to the embodiments of the present application can be used in, but not limited to, electric equipment such as vehicles, ships or aircraft. The battery apparatus can be used to form the battery apparatus of the electric equipment.

[0065] The electric equipment using the battery apparatus as power supply in the embodiments of the present application can be, but not limited to, mobile phones, tablets, notebook computers, electric toys, electric tools, electric cars, electric cars, ships, spacecraft and the like. Among them, the electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric plane toys, and the like. Spacecraft can include aircraft, rockets, space shuttles and spacecraft, and the like.

[0066] It should be understood that the technical solutions described in the embodiments of the present application are not only limited to the above described battery apparatus and electric equipment, but also can be applied to all batteries including the box and the electric equipment using the battery.

[0067] The battery apparatus (Battery Apparatus) mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (Battery Cell Assembly) can include a plurality of battery cells connected in series, parallel or mixed connection through the busbar component.

[0068] In some embodiments, the battery cell assembly (Battery Cell Assembly) is usually formed by arranging a plurality of battery cells.

[0069] As an example, the battery cell assembly can be a battery module (Battery Module) formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with a cable tie.

[0070] In some embodiments, the battery apparatus can be a battery pack (battery Pack), which includes a box and one or more battery cell assemblies, and the battery cell assemblies are contained in the box.

[0071] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the case by fixing the battery module in the case.

[0072] As an example, the battery cell assembly can also be accommodated in the case by fixing a plurality of battery cells directly in the case.

[0073] As an example, the case can include a first case and a second case. The first case and the second case are fastened so that an enclosed space is formed inside the case to accommodate the battery cell assembly. Here, enclosed means covered or closed, which can be sealed or unsealed. The first case can be a top cover or a bottom plate.

[0074] As an example, the case can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are connected to the frame, so that an enclosed space is formed inside the case to accommodate the battery cell assembly.

[0075] In some embodiments, the case can be part of the chassis structure of the vehicle. For example, part of the case can be at least part of the floor of the vehicle, or part of the case can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0076] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell mainly works by moving metal ions between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector without the positive electrode active material layer protrudes from the current collector with the positive electrode active material layer, and the current collector without the positive electrode active material layer is stacked as a positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector without the negative electrode active material layer protrudes from the current collector with the negative electrode active material layer, and the current collector without the negative electrode active material layer is stacked as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly can be a winding type structure or a stacking type structure, and the embodiments of the present application are not limited thereto.

[0077] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery cells, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships, and spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0078] During the production process of the battery device, the surface of the pole column is prone to have defects such as pits, and the depth of the pits needs to be detected to kick out unqualified products. In the prior art, a probe is usually used to test the depth of the pits. However, due to the structure and size limitation of the probe, the depth of the pits cannot be accurately detected.

[0079] In order to solve this problem, the embodiment of the present application provides a pit depth detection device, which comprises a reference platform, a measuring piece and a support assembly. The reference platform comprises a reference surface. The measuring piece is connected with the reference platform, and a scale line arranged along a first direction is arranged on the measuring piece. The first direction intersects with the reference surface. The support assembly is in sliding connection with the measuring piece and can move along the first direction. The support assembly comprises a fixing piece. The fixing piece comprises a first part and a second part which are connected with each other. The first part is provided with a first mounting hole. The second part is provided with a first through hole which is in communication with the first mounting hole. The surface of the second part away from the first part can be arranged in close contact with a workpiece to be measured. The first through hole is in communication with a pit to be measured of the workpiece to be measured. The side of the first mounting hole away from the first through hole is used for flowing in hot melt adhesive. The flowed-in hot melt adhesive can be solidified in the pit to be measured and form a profiling structure. The profiling structure comprises a pit profiling piece and an adhesive which are arranged integrally.

[0080] The pit depth detection device of the embodiment of the present application comprises a reference platform, a measuring piece and a support assembly. The measuring piece is connected with the reference platform, and a scale line arranged along a first direction is arranged on the measuring piece. The first direction intersects with the reference surface. The support assembly is in sliding connection with the measuring piece and can move along the first direction. The support assembly comprises a fixing piece. The fixing piece comprises a first part and a second part which are connected with each other. The first part is provided with a first mounting hole. The second part is provided with a first through hole which is in communication with the first mounting hole. The surface of the second part away from the first part can be arranged in close contact with a workpiece to be measured. The first through hole is in communication with a pit to be measured of the workpiece to be measured. The side of the first mounting hole away from the first through hole is used for flowing in hot melt adhesive. The flowed-in hot melt adhesive can be solidified in the pit to be measured and form a profiling structure. The profiling structure comprises a pit profiling piece and an adhesive which are arranged integrally. The pit profiling piece can be in contact with the reference surface at one end along the first direction by moving the support assembly along the first direction. Then the corresponding scale line position of the other end of the pit profiling piece along the first direction can be read through the scale line, so as to detect the size of the pit profiling piece along the first direction, and thus the depth of the pit can be accurately measured.

[0081] The pit depth detection device in the embodiment of the present application can detect the pits on the surface of the pole column, and can also detect the pits or depressions on the surface of other products.

[0082] The structures in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0083] The first aspect of the embodiments of this application provides a pit depth detection device 100, such as... Figures 1 to 7 As shown, the pit depth detection device 100 includes a reference platform 10, a measuring element 20, and a support assembly 30. The reference platform 10 includes a reference surface 11. The measuring element 20 is connected to the reference platform 10, and the measuring element 20 is provided with a scale line 21 arranged along a first direction, which intersects with the reference surface 11. The support assembly 30 is slidably connected to the measuring element 20 and can move along the first direction. The support assembly 30 includes a fixing element 31, which includes a first part 311 and a second part 312 connected to each other. The first part 311 is provided with a first mounting hole 3111, and the second part 312 is provided with a first through hole 3121. A through hole 3121 is connected to a first mounting hole 3111; the surface of the second part 312 facing away from the first part 311 can be fitted to the workpiece 300 to be tested, and the first through hole 3121 is connected to the test pit 301 of the workpiece 300 to be tested. Hot melt adhesive flows into the side of the first mounting hole 3111 facing away from the first through hole 3121. The flowing hot melt adhesive can solidify in the test pit 301 and form a contour structure 200. The contour structure 200 includes an integrally formed pit contour part 201 and an adhesive 202, wherein the adhesive 202 is disposed in the first through hole 3121, and the pit contour part 201 is formed in the test pit 301.

[0084] It should be noted that, as Figure 1 As shown, the first direction here is Figure 1 In the ZZ direction, the reference platform 10 is a horizontally placed plate-like structure, and the reference surface 11 is the upper surface of the reference platform 10, which is a horizontal surface structure. The measuring component 20 here is a vertically arranged plate-like structure, which can be bonded to the reference surface 11 or connected to the reference surface 11 by bolts or other means.

[0085] The bracket assembly 30 here can slide along the ZZ direction, thereby allowing measurement of the recessed contouring part 201 of the contouring structure 200 fixed on the fixing part 31. The colloid 202 is located inside the first through hole 3121 and can be connected to the side wall of the first through hole 3121 by the adhesiveness of the colloid 202, reducing the probability of the contouring structure 200 automatically falling off from the first through hole 3121.

[0086] The first mounting hole 3111 can be inserted into the glue gun 400 in plug-in cooperation, and the glue gun 400 can generate hot melt adhesive. After part of the hot melt adhesive flows out of the glue gun 400, the hot melt adhesive can pass through the first through hole 3121 and enter the to-be-measured pit 301 to form the pit profiling part 201, and part of the hot melt adhesive can remain in the first through hole 3121 to form the glue body 202, so that the profiling structure 200 has the pit profiling part 201 and the glue body 202, and the fixing of the pit profiling part 201 is realized by the accommodation of the glue body 202 by the fixing part 31.

[0087] Alternatively, the glue gun 400 herein can also use other hot melt adhesive injection devices. At this time, the first mounting hole 3111 can be adapted according to the shape of the hot melt adhesive injection device. Considering that the glue gun 400 is usually a conical structure, the first mounting hole 3111 herein can adopt a conical hole structure, so as to be adapted to the shape of the glue gun 400 and realize stable installation of the glue gun 400.

[0088] The pit depth detection device 100 of the embodiment of the application comprises a reference platform 10, a measuring part 20, and a support assembly 30. The measuring part 20 is connected with the reference platform 10, and the measuring part 20 is provided with a scale line 21 arranged along a first direction, and the first direction intersects with a reference surface 11. The support assembly 30 is in sliding connection with the measuring part 20 and can move along the first direction. The support assembly 30 comprises a fixing part 31, and the fixing part 31 comprises a first part 311 and a second part 312 connected with each other. The first part 311 is provided with a first mounting hole 3111, and the second part 312 is provided with a first through hole 3121 in communication with the first mounting hole 3111. The surface of the second part 312 away from the first part 311 can be arranged in abutment with a to-be-measured workpiece 300, and the first through hole 3121 is in communication with a to-be-measured pit 301 of the to-be-measured workpiece 300. The side of the first mounting hole 3111 away from the first through hole 3121 is used for inflow of hot melt adhesive, and the inflowing hot melt adhesive can be solidified in the to-be-measured pit 301 and form a profiling structure 200. The profiling structure 200 comprises a pit profiling part 201 and a glue body 202 arranged integrally. The glue body 202 is arranged in the first through hole 3121. Therefore, the pit profiling part 201 can be in contact with the reference surface 11 at one end along the first direction by moving the support assembly 30 along the first direction, and then the corresponding scale line 21 position of the other end of the pit profiling part 201 along the first direction can be read by the scale line 21, so as to detect the size of the pit profiling part 201 along the first direction, thereby realizing accurate measurement of the depth of the pit.

[0089] Optionally, as Figure 4As shown, the first through hole 3121 includes at least two sub-through holes arranged in sequence along the first direction, and the sizes of the at least two sub-through holes are different.

[0090] The sub-through holes here can be rectangular holes or circular holes, and the shapes of the two sub-through holes can be the same or different structures. In order to facilitate the flow of hot melt adhesive, the at least two sub-through holes can adopt a coaxial structure. Of course, the different sub-through holes here can also adopt a non-coaxial structure, and the hot melt adhesive can also flow along the first through hole 3121.

[0091] The embodiment of the present application can realize the posture limitation of the profiling structure 200 through the first through hole 3121 including at least two sub-through holes arranged in sequence along the first direction and the sizes of the at least two sub-through holes being different, thereby reducing the probability of rotation, skewing and displacement of the profiling structure 200, improving the test precision of the pit profiling part 201, and further setting the sizes of the at least two sub-through holes to be different structures, so that the part in the sub-through hole with smaller size becomes a structure-weakened area, facilitating the destruction of the gel 202 in the structure-weakened area and facilitating the taking out of the profiling structure 200 from the fixing part 31.

[0092] Optionally, as shown in Figure 4 The at least two sub-through holes include a first sub-through hole 31211 and a second sub-through hole 31212 arranged coaxially, wherein the second sub-through hole 31212 is arranged between the first sub-through hole 31211 and the first mounting hole 3111, the size of the second sub-through hole 31212 is smaller than that of the first sub-through hole 31211 along a second direction, and the second direction intersects the first direction.

[0093] The first sub-through hole 31211 is located below the second sub-through hole 31212, that is, the first sub-through hole 31211 is arranged closer to the to-be-tested pit 301 of the to-be-tested workpiece 300 and is in communication with the to-be-tested pit 301. Continue to refer to Figure 1 As shown, the second direction here is Figure 1The second direction is set as the Y-Y direction for convenience. When the first sub-hole 31211 and the second sub-hole 31212 are both circular holes, the diameter of the second sub-hole 31212 is smaller than the diameter of the first sub-hole 31211. When the first sub-hole 31211 and the second sub-hole 31212 are both rectangular holes, the length of the second sub-hole 31212 is smaller than the length of the first sub-hole 31211, or the width of the second sub-hole 31212 is smaller than the width of the first sub-hole 31211. When the shapes of the first sub-hole 31211 and the second sub-hole 31212 are inconsistent, the second direction can be any direction, that is, the size of the second sub-hole 31212 in any direction is smaller than the size of the first sub-hole 31211.

[0094] The embodiment of the present application comprises the first sub-hole 31211 and the second sub-hole 31212 arranged coaxially, the second sub-hole 31212 is arranged between the first sub-hole 31211 and the first mounting hole 3111, the size of the second sub-hole 31212 in the second direction is smaller than the size of the first sub-hole 31211, and the second direction intersects the first direction. The posture of the dimple profiling piece 201 can be limited by the colloid 202 in the second sub-hole 31212 and the first sub-hole 31211. Compared with the single hole structure, the first sub-hole 31211 can reduce the rotation, skew and displacement of the dimple profiling piece 201, and improve the test accuracy of the dimple profiling piece 201.

[0095] In some embodiments of the present application, as shown in Figure 4 The at least two sub-holes further comprise a third sub-hole 31213 arranged between the second sub-hole 31212 and the first mounting hole 3111. The third sub-hole 31213 is in the shape of an inverted circular truncated cone, the second sub-hole 31212 is in the shape of a cylinder, and the first sub-hole 31211 is in the shape of a cylinder.

[0096] It should be noted that the third sub-hole 31213 and the second sub-hole 31212 are in communication, and the third sub-hole 31213, the second sub-hole 31212 and the first sub-hole 31211 are coaxially connected, which facilitates the flow of hot melt adhesive and reduces the resistance encountered by the hot melt adhesive during the flow process.

[0097] The embodiment of the present application sets the third sub-through hole 31213 between the second sub-through hole 31212 and the first mounting hole 3111, wherein the third sub-through hole 31213 has an inverted circular truncated cone structure, the second sub-through hole 31212 has a cylindrical structure, and the first sub-through hole 31211 has a cylindrical structure. Therefore, the posture of the pit profiling part 201 of the profiling structure 200 can be limited by the colloid 202 in the third sub-through hole 31213, and the probability of the profiling structure 200 automatically falling out of the first through hole 3121 is reduced.

[0098] Optionally, as shown in Figure 4 , the taper of the third sub-through hole 31213 ranges from 5 degrees to 40 degrees, such as 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, or 35 degrees. As mentioned above, the third sub-through hole 31213 has an inverted circular truncated cone structure. Therefore, the taper mentioned here can be represented by the vertex angle of the circular truncated cone structure. By limiting the taper of the third sub-through hole 31213, the colloid 202 in the third sub-through hole 31213 can form a structure with a small taper, which facilitates the removal of the colloid 202 from the first through hole 3121 under the action of an external force.

[0099] By limiting the taper of the third sub-through hole 31213 to range from 5 degrees to 40 degrees, the colloid 202 can be pulled out from below the first through hole 3121 under the action of an external force, thereby achieving the rapid removal of the colloid 202 from the fixing member 31.

[0100] In some embodiments of the present application, as shown in Figure 1 and Figure 2 , the support assembly 30 further includes a support body 32 and a plug-in member 33. The plug-in member 33 is connected with the fixing member 31, and the plug-in member 33 is in plug-in cooperation with the support body 32 and can move relative to the support body 32 along a second direction. The second direction intersects the first direction.

[0101] Here, the support body 32 can be a plate structure, and the plug-in member 33 can also be a plate structure. The plug-in member 33 can move relative to the support body 32 along the second direction, thereby adjusting the distance between the fixing member 31 and the measuring member 20.

[0102] The embodiment of the present application sets the third sub-through hole 31213 between the second sub-through hole 31212 and the first mounting hole 3111, wherein the third sub-through hole 31213 has an inverted circular truncated cone structure, the second sub-through hole 31212 has a cylindrical structure, and the first sub-through hole 31211 has a cylindrical structure. Therefore, the posture of the pit profiling part 201 of the profiling structure 200 can be limited by the colloid 202 in the third sub-through hole 31213, and the probability of the profiling structure 200 automatically falling out of the first through hole 3121 is reduced.

[0103] In some embodiments of the present application, as shown in Figure 4 The first part 311 is in a cylindrical structure, and at least part of the second part 312 is in a rounded trapezoidal structure.

[0104] Of course, the first part 311 here can also adopt a square structure, or a polygonal structure. The second part 312 here can adopt a rounded trapezoidal structure, which can reduce the area of the contact surface between the second part 312 and the workpiece 300 to be measured.

[0105] The embodiments of the present application can make the first part 311 have higher strength and form stable support for the glue gun 400 by making the first part 311 in a cylindrical structure and at least part of the second part 312 in a rounded trapezoidal structure. In addition, the small end 3122 of the second part 312 can be arranged in close contact with the workpiece 300 to be measured, which can make the contact surface between the fixing part 31 and the workpiece 300 to be measured relatively small, thereby reducing the influence of the surface of the workpiece to be measured due to defects such as distortion, unevenness, etc., and thus improving the accuracy of the measurement result of the pit 301 to be measured.

[0106] In some embodiments of the present application, as shown in Figure 5 The insertion part 331 and the insertion slot 321 are insertedly matched.

[0107] It should be noted that the insertion slot 321 can be arranged on the insertion part 33, and the insertion part 331 can be arranged on the bracket body 32. Alternatively, the insertion slot 321 can also be arranged on the insertion part 33, and the insertion part 331 can be arranged on the bracket body 32, which can realize the insertion matching between the insertion part 331 and the insertion slot 321.

[0108] In Figure 5 The bracket body 32 is provided with the insertion slot 321, and the insertion part 33 includes two insertion parts 331 arranged at intervals. The number of the insertion slot 321 is two, and the two insertion parts 331 are respectively inserted into the two insertion slots 321, which can improve the balance of the insertion part 33 relative to the bracket body 32, thereby improving the balance of the fixing part 31.

[0109] The embodiments of the present application can realize the adjustment of the distance between the fixing part 31 and the bracket body 32 by the matching between the insertion slot 321 and the insertion part 331.

[0110] In some embodiments of the present application, the maximum movement stroke of the inserting piece 33 along the second direction is greater than the maximum size of the fixing piece 31.

[0111] Wherein, the maximum movement stroke of the inserting piece 33 and the maximum movement stroke of the fixing piece 31 are consistent, the movement of the inserting piece 33 drives the movement of the fixing piece 31, and the maximum size of the fixing piece 31 is the outer diameter of the first part 311. Here, by making the maximum movement stroke of the inserting piece 33 greater than the maximum size of the fixing piece 31, the fixing piece 31 can be placed in suspension by moving the inserting piece 33 along the Y-Y direction away from the measuring piece 20, so that the normal projection of the fixing piece 31 along the Z-Z direction does not fall on the reference platform 10, facilitating the placement of the lower surface of the second part 312 in contact with the surface of the workpiece 300 to be measured.

[0112] Embodiments of the present application make the fixing piece 31 avoid the influence of the reference platform 10 by making the maximum movement stroke of the inserting piece 33 along the second direction greater than the maximum size of the fixing piece 31, facilitating the placement of the second part 312 of the fixing piece 31 away from the surface of the first part 311 in contact with the workpiece 300 to be measured, and facilitating the injection of hot melt adhesive into the measured pit 301 of the workpiece 300 to be measured by using a glue gun 400 or the like.

[0113] In some embodiments of the present application, at least part of the fixing piece 31 is in a circular truncated cone structure, and the small end 3122 of the circular truncated cone structure faces the reference platform 10.

[0114] Wherein, the fixing piece 31 is in an integral structure, that is, the first part 311 and the second part 312 are in an integral structure, and here the circular truncated cone structure means that the fixing piece 31 has a small end 3122 along the Z-Z direction, and the small end 3122 faces the reference platform 10.

[0115] Embodiments of the present application make the fixing piece 31 avoid the influence of the reference platform 10 by making the maximum movement stroke of the inserting piece 33 along the second direction greater than the maximum size of the fixing piece 31, facilitating the placement of the second part 312 of the fixing piece 31 away from the surface of the first part 311 in contact with the workpiece 300 to be measured, and facilitating the injection of hot melt adhesive into the measured pit 301 of the workpiece 300 to be measured by using a glue gun 400 or the like.

[0116] In some embodiments of the present application, as shown in Figure 5 The measuring piece 20 is provided with a sliding groove 22 extending along the first direction, and the support assembly 30 is in sliding cooperation with the sliding groove 22.

[0117] In Figure 5In the embodiment, the bracket assembly 30 can move upward or downward along the Z-Z in the sliding groove 22, and the locking structure such as the vernier locking structure can be used to lock the bracket assembly 30 in a position, and of course, the bracket assembly 30 can be fixed in a position by manual fixing.

[0118] The embodiment of the present application can improve the smoothness of the bracket assembly 30 sliding along the first direction by arranging the sliding groove 22 extending along the first direction on the measuring piece 20 and slidingly connecting the bracket assembly 30 with the sliding groove 22.

[0119] As shown in Figure 6 and Figure 7 , the recess depth detection device 100 is used, the bracket assembly 30 is first moved to the bottom of the Z-Z direction, and the fixing piece 31 is moved to the outside of the reference platform 10 along the Y-Y direction by the inserting piece 33, and is not affected by the reference platform 10, the lower surface of the second part 312 of the fixing piece 31 is arranged in abutment with the workpiece 300 to be measured, the first through hole 3121 is in communication with the recess 301 to be measured, the glue gun 400 is inserted into the first mounting hole 3111, then hot melt adhesive is injected into the first through hole 3121, when the hot melt adhesive overflows into the third sub-through hole 31213, the injection is stopped, and after the hot melt adhesive solidifies, the profiling structure 200 is taken out of the recess 301 to be measured.

[0120] The bracket assembly 30 with the profiling structure 200 is moved to the reference platform 10, wherein the reference surface 11 of the reference platform 10 is connected with one end of the recess profiling piece 201, and the height H of the recess profiling piece 201, that is, the depth of the recess 301 to be measured, can be obtained by observing the corresponding scale line 21 of the other end of the recess profiling piece 201.

[0121] The profiling structure 200 has a glue body 202 in addition to the recess profiling piece 201, wherein the glue body 202 is divided into three parts, that is, the first glue body 2021, the second glue body 2022 and the third glue body 2023, wherein the first glue body 2021 is formed in the first sub-through hole 31211, the second glue body 2022 is formed in the second sub-through hole 31212, and the third glue body 2023 is formed in the third sub-through hole 31213.

[0122] After the measurement of the concave pit profiling piece 201 is completed, the profiling structure 200 can be directly pulled out from below the fixing piece 31 by means of an external force due to the small taper of the third glue body 2023. Alternatively, the second method of heating can be used to melt or soften the third glue body 2023, and the profiling structure 200 can be more easily pulled out from below the fixing piece 31. Alternatively, a tool can be used to stir the glue body 202, so as to pull the profiling structure 200 out from below the fixing piece 31.

[0123] The workpiece to be measured 300 here can be a pole, and the concave pit 301 to be measured is a defect such as a recess or a concave pit on the surface of the pole.

[0124] The second aspect of the embodiment of the present application proposes a battery production line comprising the concave pit depth detection device 100 mentioned in the above embodiment.

[0125] The battery production line further comprises welding equipment, winding equipment, coating equipment and the like, and different equipment is used in different processes, so that the production of the battery device can be realized.

[0126] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described.

[0127] A first aspect of embodiments of the present application provides a pit depth detection device 100, which is used in cooperation with a glue gun 400, comprising a reference platform 10, a measuring piece 20 and a support assembly 30, the reference platform 10 comprising a reference surface 11; the measuring piece 20 is connected with the reference platform 10, and a scale line 21 is arranged on the measuring piece 20 along a first direction, the first direction intersects the reference surface 11; the support assembly 30 is in sliding connection with the measuring piece 20 and can move along the first direction; the support assembly 30 comprises a fixing piece 31, the fixing piece 31 comprises a first part 311 and a second part 312 connected with each other, wherein the first part 311 is provided with a first mounting hole 3111, the surface of the second part 312 away from the first part 311 can be arranged in close contact with a workpiece 300 to be measured, and a first through hole 3121 is in communication with a pit 301 to be measured of the workpiece 300 to be measured, one side of the first mounting hole 3111 away from the first through hole 3121 is used for inflow of hot melt adhesive, the inflowing hot melt adhesive can be solidified in the pit 301 to be measured and form a profiling structure 200, the profiling structure 200 comprises a pit profiling piece 201 and an adhesive 202 arranged integrally, wherein the adhesive 202 is arranged in the first through hole 3121, and the pit profiling piece 201 is formed in the pit 301 to be measured. Further, the first through hole 3121 comprises at least two sub-through holes arranged in sequence along the first direction, and the sizes of the at least two sub-through holes are different. Further, the at least two sub-through holes comprise a first sub-through hole 31211 and a second sub-through hole 31212 arranged coaxially, wherein the second sub-through hole 31212 is arranged between the first sub-through hole 31211 and the first mounting hole 3111, along a second direction, the size of the second sub-through hole 31212 is smaller than the size of the first sub-through hole 31211, and the second direction intersects the first direction. Further, the at least two sub-through holes further comprise a third sub-through hole 31213 arranged between the second sub-through hole 31212 and the first mounting hole 3111, wherein the third sub-through hole 31213 is in the shape of an inverted circular truncated cone, the second sub-through hole 31212 is in the shape of a circular cylinder, and the first sub-through hole 31211 is in the shape of a circular cylinder. Further, the taper of the third sub-through hole 31213 ranges from 5 degrees to 40 degrees. Further, the support assembly 30 further comprises a support body 32 and a plug-in piece 33, the plug-in piece 33 is connected with the fixing piece 31, and the plug-in piece 33 is in plug-in cooperation with the support body 32 and can move relative to the support body 32 along the second direction, and the second direction intersects the first direction. Further, along the second direction, the maximum movement stroke of the plug-in piece 33 is greater than the maximum size of the fixing piece 31. Further, the plug-in piece 33 comprises one of a plug-in slot 321 and a plug-in part 331, the support body 32 is provided with the other one of the plug-in slot 321 and the plug-in part 331, and the plug-in part 331 is in plug-in cooperation with the plug-in slot 321. Further, at least part of the fixing piece 31 is in the shape of a circular truncated cone, and a small end 3122 of the circular truncated cone faces the reference platform 10.Further, the first part 311 is in a cylindrical structure, and at least part of the second part 312 is in an inverted circular trapezoidal structure. Further, the measuring member 20 is provided with a sliding groove 22 extending in a first direction; the bracket assembly 30 is in sliding fit with the sliding groove 22.

[0128] The above merely provides the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A device for detecting the depth of a pit, characterized in that, include: A reference platform, wherein the reference platform includes a reference surface; A measuring element is connected to the reference platform, and the measuring element is provided with scale lines arranged along a first direction, which intersects the reference surface; as well as A support assembly, which is slidably connected to the measuring element and is movable along the first direction; The bracket assembly includes a fastener, which includes a first part and a second part that are connected to each other. The first part is provided with a first mounting hole, and the second part is provided with a first through hole, which communicates with the first mounting hole. The second part, facing away from the first part, can be fitted to the workpiece to be tested, and the first through hole is connected to the test pit of the workpiece to be tested. Hot melt adhesive flows into the side of the first mounting hole facing away from the first through hole. The flowing hot melt adhesive can solidify in the test pit and form a contour structure. The contour structure includes an integrally formed pit contour part and an adhesive, wherein the adhesive is disposed in the first through hole, and the pit contour part is formed in the test pit.

2. The pit depth detection device as described in claim 1, characterized in that, The first through hole includes: At least two sub-through holes are sequentially arranged along the first direction, and the at least two sub-through holes have different sizes.

3. The pit depth detection device as described in claim 2, characterized in that, The at least two sub-through holes include a first sub-through hole and a second sub-through hole arranged coaxially, wherein the second sub-through hole is disposed between the first sub-through hole and the first mounting hole, and along a second direction, the size of the second sub-through hole is smaller than the size of the first sub-through hole, and the second direction intersects with the first direction.

4. The pit depth detection device as described in claim 3, characterized in that, At least two of the sub-through holes also include a third sub-through hole, which is disposed between the second sub-through hole and the first mounting hole. The third sub-through hole has an inverted frustum-shaped structure, the second sub-through hole has a cylindrical structure, and the first sub-through hole has a cylindrical structure.

5. The pit depth detection device as described in claim 4, characterized in that, The taper of the third sub-hole ranges from 5 degrees to 40 degrees.

6. The pit depth detection device as described in claim 1, characterized in that, The support assembly also includes: The bracket body and the connector are connected to the fixing member, and the connector is plugged into the bracket body and can move relative to the bracket body in a second direction, which intersects the first direction.

7. The pit depth detection device as described in claim 6, characterized in that, Along the second direction, the maximum travel of the connector is greater than the maximum size of the fixing member.

8. The pit depth detection device as described in claim 7, characterized in that, The connector includes one of a connector groove and a connector portion, and the bracket body is provided with the other of the connector groove and the connector portion, and the connector portion is inserted into the connector groove.

9. The pit depth detection device according to any one of claims 1 to 8, characterized in that, At least a portion of the fastener is a frustum-shaped structure, and the smaller end of the frustum-shaped structure faces the reference platform.

10. The pit depth detection device as described in claim 9, characterized in that, The first part has a cylindrical structure, and at least part of the second part has an inverted frustum structure.

11. The pit depth detection device according to any one of claims 1 to 8, characterized in that, The measuring element is provided with a sliding groove, which extends along the first direction; The bracket assembly slides in conjunction with the slide groove.

12. A battery production line, characterized in that, Includes the pit depth detection device as described in any one of claims 1 to 11.

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