Tab appearance detection device and battery manufacturing equipment

Abstract

The embodiment of the utility model provides a tab appearance detection device and battery manufacturing equipment. The tab appearance detection device is used for detecting a pole piece, the pole piece comprises a tab, and the tab appearance detection device comprises a base, a photographing unit and a plane mirror; the photographing unit comprises a first position adjusting assembly and a photographing camera, the first position adjusting assembly is arranged on the base, the first position adjusting assembly is used for driving the photographing camera to move in the first direction, and the first direction is the length direction of the pole piece; the plane mirror is movably arranged on the base in the first direction, the plane mirror and the photographing unit are both located on the side, provided with the tab, of the pole piece, and the plane mirror is used for reflecting light on the end face of the tab to the photographing camera. According to the technical scheme provided by the invention, appearance detection can be carried out on the morphology of the pole piece and the tab, and the problem that the end face of the tab is difficult to detect is solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a tab appearance detection device and battery manufacturing equipment. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of automobiles. Electric vehicles have attracted widespread attention due to their green and environmentally friendly advantages. Power batteries are an important component of electric vehicles.

[0003] In the production process of power batteries, the morphology detection of pole pieces and tabs is particularly important, especially the burr measurement of tabs. The burrs on the end faces of tabs will affect the performance of the battery. Usually, when the morphology of tabs is photographed by a camera, the burr detection on the end faces of tabs is difficult due to the limited measurement angle of the end faces of tabs. Utility Model Content

[0004] The present application provides a tab appearance inspection device and battery manufacturing equipment, which can perform appearance inspection on the morphology of a pole piece and a tab, thereby solving the problem of difficulty in detecting the end face of the tab.

[0005] This application is achieved through the following technical solutions:

[0006] In the first aspect, an embodiment of the present application provides a pole ear appearance detection device, which is used to detect a pole piece, wherein the pole piece includes a pole ear, and the pole ear appearance detection device includes a base, a photographing unit and a plane mirror; the photographing unit includes a first position adjustment component and a camera, the first position adjustment component is arranged on the base, the first position adjustment component is used to drive the camera to move along a first direction, and the first direction is the length direction of the pole piece; the plane mirror is movably arranged on the base along the first direction, the plane mirror and the photographing unit are both located on a side of the pole piece having a pole ear, and the plane mirror is used to reflect light from the end face of the pole ear to the camera.

[0007] In this solution, the first position adjustment component can drive the camera to move along the first direction, that is, the first position adjustment component enables the camera to move along the width direction of the pole piece, and the camera can take pictures of the straight edge of the side of the pole piece and the side of the pole ear. When using the camera to take pictures of the side of the pole piece, since the plane mirror is movably arranged on the base along the first direction, the plane mirror is moved along the first direction to the outside of the camera to avoid the camera, so as to facilitate the camera to take pictures of the pole piece. When the camera takes a picture of the end face of the pole piece's lug, the plane mirror is moved to one side of the first direction of the pole piece. The camera cooperates with the plane mirror, and the plane mirror can reflect the light of the end face of the pole piece onto the camera. When the camera is directed toward the plane mirror to shoot, the camera can be moved along the first direction at intervals to obtain images of different positions of the end face of the pole piece. The camera can take images of the end face of the pole piece, and the pictures taken multiple times can be spliced ​​to fully display the morphology of the end face of the pole piece, so as to facilitate the measurement of the end face burrs of the pole piece and the side end face burrs of the mark hole, thereby solving the problem of difficult detection of the end face of the pole piece, facilitating the measurement of the end face burrs of the pole piece, and improving the detection efficiency and accuracy of the pole piece.

[0008] According to some embodiments of the present application, the photo-taking unit also includes a second position adjustment component, which is arranged between the first position adjustment component and the camera, and the second position adjustment component is used to drive the camera to move along a second direction, and the second direction is the width direction of the pole piece, and the second direction is perpendicular to the first direction.

[0009] In the above scheme, the second position adjustment component is set, and the second position adjustment component can make the camera move along the width direction of the pole piece, that is, move along the second direction, so as to adjust the distance between the camera and the pole piece in the second direction, so that the camera can be close to or away from the pole piece according to the actual situation, and it is also convenient for the camera to focus better, and the pictures taken by the camera are clearer, so the morphological images of the pole piece and the pole ear obtained by the camera are more accurate. And the first position adjustment component and the second position adjustment component cooperate together, so that the camera can be adjusted in the first direction and the second direction, and the camera can be more flexibly adjusted in position according to the actual shooting requirements, so as to realize the shooting of the burrs on the pole piece and the pole ear.

[0010] According to some embodiments of the present application, the first position adjustment component includes a first guide portion, a first mounting portion and a first driving member, the first guide portion extends along a first direction and is arranged on the base; the first mounting portion is slidably arranged on the first guide portion along the first direction, and the second position adjustment component is arranged on the first mounting portion; the first driving member is installed on the base, and the first driving member is used to drive the first mounting portion to move along the first direction.

[0011] In the above scheme, the first guide part is arranged on the base. Under the driving action of the first driving member, the first guide part can guide the movement of the first mounting part and guide the first mounting part to move along the first direction. The movement process of the first mounting part is more stable and reliable, ensuring the stability and accuracy of the camera during movement.

[0012] According to some embodiments of the present application, the second position adjustment component includes a second guide portion, a second mounting portion and a second driving member, the second guide portion is extended along the second direction and is arranged on the first mounting portion; the second mounting portion is slidably arranged on the second guide portion along the second direction, and the second mounting portion is used for mounting a camera; the second driving member is arranged on the first mounting portion, and the second driving member is used to drive the second mounting portion to move along the second direction.

[0013] In the above scheme, the second guide portion is arranged on the first mounting portion. Under the driving action of the second driving member, the second guide portion can guide the movement of the second mounting portion, so that the second mounting portion moves along the second direction. The second mounting portion is more stable and reliable during the movement process, thereby ensuring the stability and accuracy of the camera during the movement process.

[0014] According to some embodiments of the present application, the photographing unit further includes a light source component, which is disposed on the second mounting portion, and the light source component is configured to be disposed toward the pole piece.

[0015] In the above scheme, in order to enable the camera to have a better shooting effect on the pole piece, the light source is set to emit bright light towards the pole piece, creating a better shooting light environment for the camera, making the photos taken by the camera brighter and clearer, which is convenient for the burr measurement of the pole ear.

[0016] According to some embodiments of the present application, the light source is an annular light source, and the center line of the annular light source is coaxially arranged with the center line of the camera.

[0017] In the above scheme, by adopting a ring light source as the light source, the ring light source has a wider illumination range, can illuminate the pole piece and the area near the pole piece, provide all-round lighting for the camera, and the camera has a better effect of shooting the pole piece.

[0018] According to some embodiments of the present application, the tab appearance inspection device further includes a third position adjustment component, and the third position adjustment component is used to drive the plane mirror to move along the first direction.

[0019] In the above scheme, by providing a third position adjustment component, the third position adjustment component can drive the plane mirror to move along the first direction, and there is no need for manual adjustment of the plane mirror. The degree of automation is higher, the controllability is stronger, and it is more conducive to the imaging coordination between the plane mirror and the camera.

[0020] According to some embodiments of the present application, the third position adjustment component includes a third guide portion, a third mounting portion and a third driving member, the third guide portion extending along the first direction and being arranged on the base; the third mounting portion is slidably arranged on the third guide portion along the first direction, and the plane mirror is arranged on the third mounting portion; the third driving member is installed on the base, and the third driving member is used to drive the third mounting portion to move along the first direction.

[0021] In the above scheme, the third guide portion is arranged on the base. Under the driving action of the third driving member, the third guide portion can guide the movement of the third mounting portion, so that the third mounting portion moves along the first direction together with the plane mirror to approach or move away from the pole ear of the pole piece. The movement process of the plane mirror is more stable and reliable, ensuring the stability and accuracy of the plane mirror during the position adjustment process.

[0022] According to some embodiments of the present application, the plane mirror is rotatably mounted on the third mounting portion.

[0023] In the above solution, by rotatably mounting the plane mirror on the third mounting portion, the angle of the plane mirror can be adjusted to meet the photographing requirements of the camera.

[0024] According to some embodiments of the present application, the angle between the plane mirror and the first direction is 45°.

[0025] In the above scheme, by setting the plane mirror at 45° to the first direction, the plane mirror can change the field of view of the camera, and the plane mirror can reflect the end face of the pole ear, and the camera can obtain the image of the end face of the pole ear by shooting the mirror surface of the plane mirror. At the same time, the plane mirror set at 45° can reflect light, deviate the incident light, and then the camera can capture the burr on the end face of the pole ear.

[0026] According to some embodiments of the present application, the number of the plane mirrors is two, and the two plane mirrors are distributed on the base at intervals along the first direction.

[0027] In the above scheme, two plane mirrors are provided, and the two plane mirrors can be moved to both sides of the first direction of the pole ear respectively. Compared with a single plane mirror, there is no need to adjust the position of the plane mirror after measuring the end face of one side of the pole ear. In this way, the two plane mirrors can reflect the end faces on both sides of the first direction of the pole ear, and the camera can take pictures and measure the end face burrs on both sides of the first direction of the pole ear at one time, thereby improving the testing efficiency of the pole ear.

[0028] In a second aspect, an embodiment of the present application further provides a battery manufacturing device, the battery manufacturing device comprising the tab appearance inspection device of any of the aforementioned embodiments.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the structure of a tab appearance inspection device according to some embodiments of the present application;

[0032] Figure 2 This is a schematic diagram of the structure of the tab appearance inspection device of some embodiments of the present application after the base is removed;

[0033] Figure 3 A schematic diagram of a camera in a tab appearance inspection device of some embodiments of the present application taking a photo of a tab moving;

[0034] Figure 4 This is a schematic diagram of the structure of the cooperation between the camera and the tab in the tab appearance inspection device of some embodiments of the present application;

[0035] Figure 5 A side view of a tab appearance inspection device according to some embodiments of the present application.

[0036] Icons: 100-ear appearance detection device; 10-base; 20-photographing unit; 21-photographing camera; 22-first position adjustment assembly; 221-first guide portion; 222-first mounting portion; 223-first driving member; 23-second position adjustment assembly; 231-second guide portion; 232-second mounting portion; 233-second driving member; 30-plane mirror; 31-fastener; 40-light source; 50-third position adjustment assembly; 51-third guide portion; 52-third mounting portion; 53-third driving member; X-first direction; Y-second direction; 200-pole piece; 201-ear; 2011-side surface of the ear; 2012-end surface of the ear; 2013-corner; 2013a-first corner section; 2013b-second corner section. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0039] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0042] The term "multiple" as used in the present application refers to more than two (including two). Similarly, the term "multiple groups" refers to more than two groups (including two groups), and the term "multiple sheets" refers to more than two sheets (including two sheets).

[0043] In the present application, the battery may include a lithium-ion battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., which is not limited in the embodiments of the present application. The battery may be cylindrical, flat, rectangular or other shapes, etc., which is not limited in the embodiments of the present application.

[0044] The battery 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 relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as a negative electrode ear. The negative electrode current collector may be made of copper, and the negative electrode active material may be carbon or silicon. The separator may be made of PP (polypropylene) or PE (polyethylene). The separator has electronic insulation properties and is used to isolate adjacent positive and negative electrode sheets to prevent short circuits between adjacent positive and negative electrode sheets. The separator has a large number of through micropores, which can ensure the free passage of electrolyte ions and has good permeability to lithium ions.

[0045] At present, in the production process of power batteries, the morphology detection of pole pieces and tabs is particularly important, especially the burr measurement of tabs. The burrs on the end faces of tabs will affect the performance of the battery. Usually, when the morphology of tabs is photographed by a camera, the burr detection on the end faces of tabs is difficult due to the limited measurement angle of the end faces of tabs.

[0046] In view of this, in order to solve the problem of difficulty in measuring the end face burrs of the pole ear, some embodiments of the present application provide a pole ear appearance detection device, which is used to detect the pole piece, the pole piece includes the pole ear, and the pole ear appearance detection device includes a base, a photographing unit and a plane mirror; the photographing unit includes a first position adjustment component and a camera, the first position adjustment component is arranged on the base, the first position adjustment component is used to drive the camera to move along a first direction, and the first direction is the length direction of the pole piece; the plane mirror is movably arranged on the base along the first direction, the plane mirror and the photographing unit are both located on the side of the pole piece having the pole ear, and the plane mirror is used to reflect light from the end face of the pole ear to the camera.

[0047] In such a lug appearance inspection device, when the camera takes a picture of the end face of the lug of the pole piece, the plane mirror is moved to one side of the first direction of the lug, and the camera cooperates with the plane mirror. The plane mirror can reflect the light of the end face of the lug to the camera, and when the camera is directed toward the plane mirror to shoot, the camera can be moved along the first direction at intervals to obtain images of different positions of the end face of the lug. The camera can take images of the end face of the lug, and the pictures taken multiple times can be spliced ​​to fully display the morphology of the end face of the lug, so as to facilitate the measurement of the end face burrs of the lug and the side end face burrs of the mark hole, thereby solving the problem of difficulty in detecting the end face of the lug, facilitating the measurement of the end face burrs of the lug, and improving the detection efficiency and accuracy of the lug.

[0048] The present application embodiment provides a tab appearance detection device, please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a tab appearance inspection device according to some embodiments of the present application; Figure 2 This is a schematic diagram of the structure of the tab appearance inspection device of some embodiments of the present application after the base is removed; Figure 3 The present invention is a schematic diagram of a camera in a tab appearance inspection device of some embodiments of the present invention moving and photographing a tab. The tab appearance inspection device 100 is used to inspect a pole piece 200, and the pole piece 200 includes a tab 201. The tab appearance inspection device 100 includes a base 10, a camera unit 20, and a plane mirror 30; the camera unit 20 includes a first position adjustment component 22 and a camera 21, and the first position adjustment component 22 is disposed on the base 10, and the first position adjustment component 22 is used to drive the camera 21 to move along a first direction X, and the first direction X is the length direction of the pole piece 200; the plane mirror 30 is movably disposed on the base 10 along the first direction X, and the plane mirror 30 and the camera unit 20 are both located on the side of the pole piece 200 having the tab 201, and the plane mirror 30 is used to reflect the light on the end face of the tab 201 to the camera 21.

[0049] The electrode 200 can be a positive electrode or a negative electrode. Figure 4 The pole lug 201 includes an end face and a side face, and the end face is vertically connected to the side face. The end face 2012 of the pole lug refers to a plane on the pole lug 201 that is perpendicular to the side face of the pole piece 200 in the width direction, and the side face 2011 of the pole lug refers to a surface on the pole lug 201 that is parallel to the side face on one side of the pole piece 200 in the width direction.

[0050] In addition, there is an arc-shaped corner 2013 between the end face 2012 of the pole ear and the straight edge of the pole piece 200, and the corner 2013 may include a first corner section 2013a and a second corner section 2013b, and the first corner section 2013a is closer to the straight edge of the side of the pole piece 200 than the second corner section 2013b. The camera 21 can directly shoot the first corner section 2013a of the corner 2013, and the second corner section 2013b of the corner 2013 close to the end face has a larger inclination angle, so it is necessary to use a plane mirror 30 to cooperate with the camera 21 to shoot and sample.

[0051] The cutting method of the electrode sheet 200 is mainly laser cutting, and the laser can accurately cut the electrode sheet 200. However, during the laser cutting process, the pole ear 201 of the electrode sheet 200 often produces burrs, which affects the quality of the electrode sheet 200. If there are burrs on the pole ear 201, if they are not removed during welding, it is easy to damage the positive and negative electrode sheets 200, causing a short circuit of the battery cell and affecting the performance of the battery.

[0052] The mark hole of the pole tab 201 refers to the hole formed during the laser cutting or punching process of the pole tab 201, and its main function is to distinguish the two pole pieces during the winding process.

[0053] The pole piece 200 can be placed in a fixture, and the fixture is movably arranged. When it is necessary to take a topographical photograph of the pole piece 200 , the fixture is moved to a measuring position for the pole ear appearance inspection device 100 to inspect and take pictures.

[0054] In this embodiment, the plane mirror 30 cannot move along the width direction of the pole piece 200, and the pole lug 201 is arranged protruding from the pole piece 200 along the width direction of the pole piece 200. In order to make the plane mirror 30 and the pole lug 201 overlap, it is convenient for the plane mirror 30 to reflect the end surface 2012 of the pole lug. When the fixture can move with the pole piece 200 to the measurement position, that is, the fixture has a travel in the width direction of the pole piece 200, that is, the width direction of the pole piece Figure 3 The second direction Y in .

[0055] The camera 21 is a photographing device that can obtain images projected onto a sensor through a lens. The camera 21 is connected to an image processor to send the photographed images to the image processor for visual inspection. The camera 21 can be divided into a CCD camera and a CMOS camera according to the chip type; the camera 21 can be divided into a line array camera and an area array camera according to the structural characteristics of the sensor. The type of the camera 21 can be determined according to actual conditions.

[0056] The first position adjustment component 22 refers to a position adjustment mechanism that can drive the camera 21 to move on the base 10 along the first direction X. The camera 21 can take images on the fly during the movement in the first direction X, so that the camera 21 can continuously obtain multiple images of the tab 201 to obtain a complete image of the end surface 2012 of the tab, and can present the appearance of the tab 201 after processing and analysis by the image processor.

[0057] The plane mirror 30 has a reflecting mirror surface, which faces the end face 2012 of the pole lug, and can be used to reflect the end face 2012 of the pole lug; and the reflecting mirror surface of the plane mirror 30 can be tilted toward the direction of the camera 21 at the same time, so that the camera 21 can photograph the reflecting mirror surface of the plane mirror 30, thereby obtaining an image of the end face 2012 of the pole lug to measure the burrs on the end face of the pole lug 201.

[0058] The plane mirror 30 is movably disposed on the base 10 along the first direction X, which means that the plane mirror 30 can move along the first direction X on the base 10, so that the plane mirror 30 can move along the width direction of the pole piece 200 on the base 10 to adjust the relative relationship between the plane mirror 30 and the camera 21.

[0059] There are many ways to move the plane mirror 30. The plane mirror 30 can be manually driven or electrically driven. The moving method of the plane mirror 30 can be determined according to actual conditions.

[0060] The camera 21 and the plane mirror 30 are both movably arranged on the base along the first direction X. The plane mirror 30 can give way when the camera 21 photographs the side straight edge morphology of the pole piece 200, and the camera 21 is used to photograph the straight edge appearance of the pole piece 200. When photographing the appearance of the pole ear 201 of the pole piece 200, the plane mirror 30 can be moved to one side of the pole ear 201, and cooperate with the camera 21. The plane mirror 30 changes the field of view of the camera 21. The camera 21 can take a picture facing the reflecting mirror surface of the plane mirror 30 to obtain the appearance of the end face 2012 of the pole ear, so as to complete the measurement of the burrs on the end face 2012 of the pole ear and the burrs on the side end face of the mark hole, thereby solving the problem that the camera 21 is inconvenient to arrange or the measurement angle is limited.

[0061] In the present solution, the first position adjustment component 22 can drive the camera 21 to move along the first direction X, that is, the first position adjustment component 22 enables the camera 21 to move along the width direction of the pole piece 200, and the camera 21 can take pictures of the straight edge of the side of the pole piece 200 and the side 2011 of the pole ear. When the camera 21 is used to take pictures of the side of the pole piece 200, since the plane mirror 30 is movably arranged on the base 10 along the first direction X, the plane mirror 30 is moved along the first direction X to the outside of the camera 21 to avoid the camera 21, so as to facilitate the camera 21 to take pictures of the pole piece 200. When the camera 21 takes a picture of the end face 2012 of the pole lug of the pole piece 200, the plane mirror 30 is moved to one side of the first direction X of the pole lug 201. The camera 21 cooperates with the plane mirror 30, and the plane mirror 30 can reflect the light of the end face 2012 of the pole lug to the camera 21. When the camera 21 is shooting toward the plane mirror 30, the camera 21 can move along the first direction X at intervals to obtain images of different positions of the end face 2012 of the pole lug. The camera 21 can take an image of the end face 2012 of the pole lug, and the pictures taken multiple times can be spliced ​​to fully display the morphology of the end face of the pole lug 201, so as to facilitate the measurement of burrs on the end face 2012 of the pole lug and burrs on the side end face of the mark hole, thereby solving the problem of difficulty in detecting the end face 2012 of the pole lug, facilitating the measurement of burrs on the end face 2012 of the pole lug, and improving the detection efficiency and accuracy of the pole lug 201.

[0062] According to some embodiments of the present application, the photo-taking unit 20 also includes a second position adjustment component 23, which is disposed between the first position adjustment component 22 and the camera 21. The second position adjustment component 23 is used to drive the camera 21 to move along a second direction Y, where the second direction Y is the width direction of the pole piece 200, and the second direction Y is perpendicular to the first direction X.

[0063] The second position adjustment component 23 refers to a position adjustment mechanism capable of driving the camera 21 to move along the second direction Y.

[0064] The second position adjustment component 23 is set, and the second position adjustment component 23 can make the camera 21 move along the width direction of the pole piece 200, that is, move along the second direction Y, so as to adjust the distance between the camera 21 and the pole piece 200 in the second direction Y, so that the camera 21 can be close to or away from the pole piece 200 according to the actual situation, and it is also convenient for the camera 21 to focus better, and the pictures taken by the camera 21 are clearer, so the morphological images of the pole piece 200 and the pole ear 201 obtained by the camera 21 are more accurate. And the first position adjustment component 22 and the second position adjustment component 23 work together, so that the camera 21 can be adjusted in the first direction X and the second direction Y, and the camera 21 can be more flexibly adjusted in position according to the actual shooting requirements, so as to realize the shooting of the burrs on the pole piece 200 and the pole ear 201.

[0065] like Figure 3 As shown, Figure 3 The diagram shows the relationship between the camera 21 and the plane mirror 30 during the process of adjusting the position in both the first direction X and the second direction Y. Figure 3 The dotted lines in the figure represent the shooting states of the camera 21 cooperating with the plane mirror 30 at different positions, so as to realize taking pictures of the morphology of the pole ear 201 of the pole piece 200 at different positions.

[0066] According to some embodiments of the present application, the first position adjustment component 22 includes a first guide portion 221, a first mounting portion 222 and a first driving member 223, the first guide portion 221 extends along the first direction X and is arranged on the base 10; the first mounting portion 222 is slidably arranged on the first guide portion 221 along the first direction X, and the second position adjustment component 23 is arranged on the first mounting portion 222; the first driving member 223 is installed on the base 10, and the first driving member 223 is used to drive the first mounting portion 222 to move along the first direction X.

[0067] The first guide portion 221 may be a guide rail, a guide rod, a guide groove or other components having a guide function. Optionally, the first guide portion 221 is a guide rail.

[0068] The first mounting portion 222 refers to a mounting component that provides a mounting substrate for the second position adjustment component 23. The first mounting portion 222 provides a bearing function for the second position adjustment component 23 and the camera 21. The first mounting portion 222 can be a plate-like structure or a frame structure. The first mounting portion 222 is correspondingly provided with a first matching portion that cooperates with the first guide portion 221 for guidance. In the case where the first guide portion 221 is a guide rail, the first matching portion can be a guide groove. The first matching portion cooperates with the first guide portion 221 for guidance.

[0069] The first driving member 223 can be a variety of linear driving mechanisms. The first driving member 223 can be a linear driving mechanism such as a cylinder, a hydraulic cylinder, a gear rack, or a motor screw nut submodule. The first driving member 223 can be selected according to actual conditions.

[0070] When the first driving member 223 is a motor screw nut submodule, the first driving member 223 includes a mounting seat, a driving motor, a screw and a nut seat. The mounting seat is mounted on the base 10, and the screw is rotatably mounted on the mounting seat and is extended along the first direction X. The driving motor is connected to the screw to drive the screw to rotate. The nut seat is threadedly matched with the screw, and the first mounting portion 222 is arranged on the nut seat. The first guide portion 221 is extended along the first direction X to set the base 10, and the first mounting portion 222 is guided and matched with the first guide portion 221 to prevent the nut seat from rotating with the screw. The driving motor drives the screw to rotate, so that the nut seat drives the first mounting portion 222 to move along the first direction X.

[0071] When the first driving member 223 is a cylinder, the cylinder is installed on the base 10 , and the driving end of the cylinder is connected to the first mounting portion 222 , and the first mounting portion 222 is guided and matched with the first guide portion 221 through the first matching portion.

[0072] The first guide portion 221 is arranged on the base 10. Under the driving action of the first driving member 223, the first guide portion 221 can guide the first mounting portion 222 to move and guide the first mounting portion 222 to move along the first direction X. The movement process of the first mounting portion 222 is more stable and reliable, ensuring the stability and accuracy of the camera 21 during the movement process.

[0073] According to some embodiments of the present application, the second position adjustment component 23 includes a second guide portion 231, a second mounting portion 232 and a second driving member 233, the second guide portion 231 is extended along the second direction Y and is arranged on the first mounting portion 222; the second mounting portion 232 is slidably arranged on the second guide portion 231 along the second direction Y, and the second mounting portion 232 is used for installing the camera 21; the second driving member 233 is arranged on the first mounting portion 222, and the second driving member 233 is used to drive the second mounting portion 232 to move along the second direction Y.

[0074] The second guide portion 231 may be a guide rail, a guide rod, a guide groove or other components having a guide function. Optionally, the first guide portion 221 may be a guide rail.

[0075] The second mounting portion 232 refers to a mounting component that provides mounting and bearing functions for the camera 21. The second mounting portion 232 may be a plate-shaped structure or a frame structure. The second mounting portion 232 is correspondingly provided with a second matching portion that cooperates with the second guide portion 231 for guidance. The second matching portion cooperates with the second guide portion 231 for guidance.

[0076] The structure of the second driving member 233 can be the same as that of the first driving member 223. When the structure of the second driving member 233 is the same as that of the first driving member 223, the driving direction and setting position of the second driving member 233 and the first driving member 223 are different. The two are perpendicular to each other and their internal specific structures are the same.

[0077] Of course, the second drive member 233 may have a different structure from the first drive member 223. The second drive member 233 may be a linear drive mechanism such as a cylinder, a hydraulic cylinder, a gear rack, or a motor screw nut submodule, and the specific structure of the second drive member 233 may be selected according to actual conditions.

[0078] The second guide portion 231 is arranged on the first mounting portion 222. Under the driving action of the second driving member 233, the second guide portion 231 can guide the second mounting portion 232 to move, so that the second mounting portion 232 moves along the second direction Y. The second mounting portion 232 is more stable and reliable during movement, ensuring the stability and accuracy of the camera 21 during movement.

[0079] According to some embodiments of the present application, the photographing unit 20 further includes a light source 40 , which is disposed on the second mounting portion 232 , and the light source 40 is used to be disposed toward the pole piece 200 .

[0080] The light source component 40 refers to a component that can emit light by itself. The irradiation direction of the light source component 40 is toward the direction of the pole piece 200 to illuminate the pole piece 200 and the environment around the pole piece 200, so as to facilitate a better shooting environment for the camera 21.

[0081] In order to enable the camera 21 to have a better shooting effect on the pole piece 200, the light source 40 is set to emit bright light towards the pole piece 200, creating a better shooting light environment for the camera 21, making the photos taken by the camera 21 brighter and clearer, which is convenient for the burr measurement of the pole ear 201.

[0082] According to some embodiments of the present application, the light source 40 is an annular light source, and the center line of the annular light source is coaxially arranged with the center line of the camera 21 .

[0083] The annular light source refers to a light source 40 having an annular shape and a hollow portion in the middle thereof.

[0084] By using the light source 40 as a ring light source, the ring light source has a wider illumination range and can illuminate the pole piece 200 and the area near the pole piece 200, providing all-round lighting for the camera 21, and the camera 21 has a better shooting effect on the pole piece 200.

[0085] According to some embodiments of the present application, the tab appearance inspection device 100 further includes a third position adjustment component 50, and the third position adjustment component 50 is used to drive the plane mirror 30 to move along the first direction X.

[0086] By providing the third position adjustment component 50 , the third position adjustment component 50 can drive the plane mirror 30 to move along the first direction X, and there is no need to manually adjust the plane mirror 30 , which has a higher degree of automation and controllability, and is more conducive to the imaging coordination between the plane mirror 30 and the camera 21 .

[0087] According to some embodiments of the present application, the third position adjustment component 50 includes a third guide portion 51, a third mounting portion 52 and a third driving member 53, the third guide portion 51 extends along the first direction X and is arranged on the base 10; the third mounting portion 52 is slidably arranged on the third guide portion 51 along the first direction X, and the plane mirror 30 is arranged on the base 10; the third driving member 53 is installed on the first mounting portion 222, and the third driving member 53 is used to drive the third mounting portion 52 to move along the first direction X.

[0088] The third guide portion 51 may be a component having a guiding function, such as a guide rail, a guide rod or a guide groove. Optionally, the second guide portion 231 may be a guide rail.

[0089] The third mounting portion 52 is a mounting component that provides mounting and bearing functions for the plane mirror 30. The third mounting portion 52 may be a plate-shaped structure or a frame structure. The third mounting portion 52 is correspondingly provided with a third matching portion that cooperates with the third guide portion 51 for guidance. The third matching portion cooperates with the third guide portion 51 for guidance.

[0090] The third driving member 53 may be a cylinder, a hydraulic cylinder, a gear rack, or a motor screw nut submodule, etc. The specific structure of the third driving member 53 may be selected according to actual conditions.

[0091] The third guide portion 51 is arranged on the base 10. Under the driving action of the third driving member 53, the third guide portion 51 can guide the third mounting portion 52 to move, so that the third mounting portion 52 moves along the first direction X together with the plane mirror 30 to approach or move away from the pole ear 201 of the pole piece 200. The movement process of the plane mirror 30 is more stable and reliable, ensuring the stability and accuracy of the plane mirror 30 during the position adjustment process.

[0092] According to some embodiments of the present application, the plane mirror 30 is rotatably mounted on the third mounting portion 52 .

[0093] The plane mirror 30 includes a mirror body and a mirror seat, and the mirror seat is mounted on the third mounting portion 52 through a fastener 31. By loosening the fastener 31, the mirror seat can be rotated relative to the third mounting portion 52, and the angle of the plane mirror 30 can be adjusted. When the angle of the plane mirror 30 is adjusted to the right position, the fastener 31 is tightened to fix the plane mirror 30. The fastener 31 can be a locking nut.

[0094] In order to improve the positioning performance of the plane mirror 30 and the third mounting portion 52, a magnet may be provided at the bottom of the mirror seat, the third mounting portion 52 is made of metal, and the mirror seat of the plane mirror 30 and the third mounting portion 52 are magnetically matched. With the fastener 31 as the rotating shaft, the angle of the plane mirror 30 can be adjusted, and the installation stability of the plane mirror 30 on the third mounting portion 52 is higher. When the angle of the plane mirror 30 needs to be adjusted, the plane mirror 30 is loosened to overcome the magnetic force between the plane mirror 30 and the third mounting portion 52, and the plane mirror 30 is rotated around the fastener 31 to adjust the angle of the plane mirror 30. When disassembling the plane mirror 30, it is only necessary to remove the fastener 31 and overcome the magnetic force between the plane mirror 30 and the third mounting portion 52, and then the plane mirror 30 can be removed or replaced.

[0095] By rotatably mounting the plane mirror 30 on the third mounting portion 52 , the angle of the plane mirror 30 can be adjusted to meet the photographing requirements of the camera 21 .

[0096] According to some embodiments of the present application, the angle between the plane mirror 30 and the first direction X is 45°.

[0097] Of course, the angle between the plane mirror 30 and the first direction X can be 30°-60°. In other words, the angle between the plane mirror 30 and the first direction X can be any value such as 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0098] By setting the plane mirror 30 at 45° to the first direction X, the plane mirror 30 can change the field of view of the camera 21, and the plane mirror 30 can reflect the end face 2012 of the pole ear, and the camera 21 can obtain the image of the end face 2012 of the pole ear by photographing the mirror surface of the plane mirror 30. At the same time, the plane mirror 30 set at 45° can reflect light, deviate the incident light, and then the camera 21 can photograph the burr situation of the end face 2012 of the pole ear.

[0099] According to some embodiments of the present application, the number of the plane mirrors 30 is two, and the two plane mirrors 30 are spaced apart and distributed on the base 10 along the first direction X.

[0100] The two plane mirrors 30 may be respectively provided with a third position adjustment component 50, and the third position adjustment component 50 may be provided in two groups. The two groups of third position adjustment components 50 respectively correspond to adjusting the position of the plane mirror 30 in the first direction X, so that the two plane mirrors 30 can be close to or away from each other, and the spacing between the two plane mirrors 30 in the first direction X is adjustable, which can adapt to the end face 2012 burr measurement of pole ears of different sizes, and has a wider range of applications.

[0101] By providing two plane mirrors 30, the two plane mirrors 30 can be moved to both sides of the first direction X of the pole tab 201 respectively. Compared with a single plane mirror 30, there is no need to adjust the position of the plane mirror 30 after measuring the end face on one side of the pole tab 201. In this way, the two plane mirrors 30 can reflect the end faces on both sides of the first direction X of the pole tab 201, and the camera 21 can take pictures and measure the end face burrs on both sides of the first direction X of the pole tab 201 at one time, thereby improving the test efficiency of the pole tab 201.

[0102] The detection process of the tab appearance detection device 100 is as follows:

[0103] The fixture carries the pole piece 200 to the target position for measurement, and the camera 21 moves along the first direction X toward the pole ear 201. During this process, the camera 21 can capture the image of the straight edge of the side 2011 of the pole ear. When the shooting point of the camera 21 moves to the corner 2013 of the pole ear 201 and gradually becomes perpendicular to the side of the pole piece 200, the image range of the end face of the pole ear 201 that can be captured by the camera 21 gradually decreases. At this time, the plane mirror 30 is moved along the first direction X, and the position of the second direction Y is adjusted accordingly, and it is close to the pole ear 201. The plane mirror 30 can reflect the end face 2012 of the pole ear. The camera 21 can capture the morphology at the corner 2013 of the pole ear 201 through the reflection of the plane mirror 30 for burr measurement. The camera 21 can complete the morphology photography of the corner 2013 of the pole ear 201 and the area perpendicular to the pole piece 200 through the plane mirror 30. When the camera 21 continues to move along the first direction X and / or the second direction Y to the mark hole of the tab 201, the plane mirror 30 is also used to cooperate with the camera 21 to complete the end face morphology of the mark hole of the tab 201. When the camera 21 photographs the morphology of the side 2011 of the tab, since the side 2011 of the tab is parallel to the straight side of the pole piece 200, the camera 21 can directly photograph the morphology of the side 2011 of the tab without the aid of the plane mirror 30. Similarly, when the camera 21 moves to the other side of the first direction X of the tab 201, the above method is used to complete the morphology of the pole piece 200 and the tab 201. By splicing the pictures taken multiple times, the morphology of the end face 2012 of the tab can be fully displayed. At the same time, the moving distance of the camera 21 in the first direction X and the second direction Y can be recorded, so that the overall morphology and size of the tab 201 can be simulated, which is convenient for the measurement of burrs on the end face 2012 of the tab.

[0104] An embodiment of the present application further provides a battery manufacturing device, the battery manufacturing device comprising the tab appearance inspection device 100 of any of the aforementioned embodiments.

[0105] In some embodiments, please refer to Figures 1 to 5The pole ear appearance detection device 100 includes a base 10, a camera unit 20 and a plane mirror 30; the camera unit 20 includes a first position adjustment component 22 and a camera 21, the first position adjustment component 22 is arranged on the base 10, and the first position adjustment component 22 is used to drive the camera 21 to move along the first direction X, and the first direction X is the length direction of the pole piece 200; the plane mirror 30 is movably arranged on the base 10 along the first direction X, the plane mirror 30 and the camera unit 20 are both located on the side of the pole piece 200 with the pole ear 201, and the plane mirror 30 is used to reflect the light on the end face of the pole ear 201 to the camera 21, and the camera unit 20 also includes a second position adjustment component 23, the second position adjustment component 23 is arranged between the first position adjustment component 22 and the camera 21, and the second position adjustment component 23 is used to drive the camera 21 to move along the second direction Y, the second direction Y is the width direction of the pole piece 200, and the second direction Y is perpendicular to the first direction X.

[0106] The first position adjustment component 22 can drive the camera 21 to move along the first direction X, that is, the first position adjustment component 22 enables the camera 21 to move along the width direction of the pole piece 200, and the camera 21 can take pictures of the straight edge of the side of the pole piece 200 and the side 2011 of the pole ear. When the camera 21 is used to take pictures of the side of the pole piece 200, since the plane mirror 30 is movably arranged on the base 10 along the first direction X, the plane mirror 30 is moved along the first direction X to the outside of the camera 21 to avoid the camera 21, so that the camera 21 can take pictures of the pole piece 200. When the camera 21 takes a picture of the end face 2012 of the pole lug of the pole piece 200, the plane mirror 30 is moved to one side of the first direction X of the pole lug 201. The camera 21 cooperates with the plane mirror 30, and the plane mirror 30 can reflect the light of the end face 2012 of the pole lug to the camera 21. When the camera 21 is shooting toward the plane mirror 30, the camera 21 can move along the first direction X at intervals to obtain images of different positions of the end face 2012 of the pole lug. The camera 21 can take an image of the end face 2012 of the pole lug, and the pictures taken multiple times can be spliced ​​to fully display the morphology of the end face of the pole lug 201, so as to facilitate the measurement of burrs on the end face 2012 of the pole lug and burrs on the side end face of the mark hole, thereby solving the problem of difficulty in detecting the end face 2012 of the pole lug, facilitating the measurement of burrs on the end face 2012 of the pole lug, and improving the detection efficiency and accuracy of the pole lug 201. The second position adjustment component 23 can make the camera 21 move along the width direction of the pole piece 200, that is, move along the second direction Y, so as to adjust the distance between the camera 21 and the pole piece 200 in the second direction Y, so that the camera 21 can be close to or away from the pole piece 200 according to the actual situation, and it is also convenient for the camera 21 to focus better, and the pictures taken by the camera 21 are clearer, so the morphological images of the pole piece 200 and the pole ear 201 obtained by the camera 21 are more accurate. And the first position adjustment component 22 and the second position adjustment component 23 work together, so that the camera 21 can be adjusted in the first direction X and the second direction Y. The camera 21 can be more flexibly adjusted in position according to the actual shooting requirements, so as to achieve the shooting of the burrs on the pole piece 200 and the pole ear 201.

[0107] In some embodiments, the first position adjustment component 22 includes a first guide portion 221, a first mounting portion 222 and a first driving member 223. The first guide portion 221 is extended along the first direction X and is arranged on the base 10; the first mounting portion 222 is slidably arranged on the first guide portion 221 along the first direction X, and the second position adjustment component 23 is arranged on the first mounting portion 222; the first driving member 223 is installed on the base 10, and the first driving member 223 is used to drive the first mounting portion 222 to move along the first direction X. The second position adjustment component 23 includes a second guide portion 231, a second mounting portion 232 and a second driving member 233. The second guide portion 231 is extended along the second direction Y and is arranged on the first mounting portion 222; the second mounting portion 232 is slidably arranged on the second guide portion 231 along the second direction Y, and the second mounting portion 232 is used for mounting the camera 21; the second driving member 233 is arranged on the first mounting portion 222, and the second driving member 233 is used to drive the second mounting portion 232 to move along the second direction Y. The photographing unit 20 further includes a light source 40 . The light source 40 is disposed on the second mounting portion 232 . The light source 40 is used to be disposed toward the pole piece 200 . The light source 40 is an annular light source.

[0108] By setting the first guide part 221 on the base 10, under the driving action of the first driving member 223, the first guide part 221 can guide the first mounting part 222 to move, and guide the first mounting part 222 to move along the first direction X. The movement process of the first mounting part 222 is more stable and reliable, ensuring the stability and accuracy of the camera 21 during the movement. By setting the second guide part 231 on the first mounting part 222, under the driving action of the second driving member 233, the second guide part 231 can guide the second mounting part 232 to move, so that the second mounting part 232 moves along the second direction Y. The movement process of the second mounting part 232 is more stable and reliable, ensuring the stability and accuracy of the camera 21 during the movement. By adopting the light source 40 as an annular light source, the irradiation range of the annular light source is wider, and the pole piece 200 and the area near the pole piece 200 can be illuminated, providing all-round lighting for the camera 21, and the camera 21 has a better shooting effect on the pole piece 200.

[0109] In some embodiments, the tab appearance inspection device 100 further includes a third position adjustment component 50, which is used to drive the plane mirror 30 to move along the first direction X. The third position adjustment component 50 includes a third guide portion 51, a third mounting portion 52 and a third driving member 53. The third guide portion 51 is extended and arranged on the base 10 along the first direction X; the third mounting portion 52 is slidably arranged on the third guide portion 51 along the first direction X, and the plane mirror 30 is arranged on the third mounting portion 52; the third driving member 53 is installed on the base 10, and the third driving member 53 is used to drive the third mounting portion 52 to move along the first direction X. The angle between the plane mirror 30 and the first direction X is 45°. The number of the plane mirrors 30 is two, and the two plane mirrors 30 are spaced apart and distributed on the base 10 along the first direction X.

[0110] By providing the third position adjustment component 50, the third position adjustment component 50 can drive the plane mirror 30 to move along the first direction X, and there is no need to manually adjust the plane mirror 30, which has a higher degree of automation and controllability, and is more conducive to the imaging coordination between the plane mirror 30 and the camera 21. Under the driving action of the third driving member 53, the third guide portion 51 can guide the third mounting portion 52 to move, so that the third mounting portion 52 and the plane mirror 30 move together along the first direction X to approach or move away from the pole ear 201 of the pole piece 200. The movement process of the plane mirror 30 is more stable and reliable, ensuring the stability and accuracy of the plane mirror 30 during the position adjustment process. By setting the plane mirror 30 at 45° to the first direction X, the plane mirror 30 can change the field of view direction of the camera 21, and the plane mirror 30 can reflect the end face 2012 of the pole ear. The camera 21 obtains the image of the end face 2012 of the pole ear by shooting the mirror surface of the plane mirror 30. At the same time, the plane mirror 30 set at 45° can reflect light and deviate the incident light, so that the camera 21 can capture the burr situation of the end face 2012 of the pole ear. The two plane mirrors 30 can be moved to both sides of the first direction X of the pole ear 201 respectively. Compared with a single plane mirror 30, it is not necessary to adjust the position of the plane mirror 30 after measuring the end face of one side of the pole ear 201. In this way, the two plane mirrors 30 can reflect the end faces on both sides of the first direction X of the pole ear 201, and the camera 21 can take pictures and measure the end face burrs on both sides of the first direction X of the pole ear 201 at one time, thereby improving the testing efficiency of the pole ear 201.

[0111] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A device for detecting the appearance of a pole ear, used for detecting a pole piece, wherein the pole piece includes a pole ear, characterized in that: include: Base; A photographing unit, comprising a first position adjustment component and a photographing camera, wherein the first position adjustment component is disposed on the base and is used to drive the photographing camera to move along a first direction, wherein the first direction is a length direction of the pole piece; A plane mirror is movably arranged on the base along the first direction. The plane mirror and the camera unit are both located on the side of the pole piece having the pole ear. The plane mirror is used to reflect light from the end face of the pole ear to the camera.

2. The tab appearance inspection device according to claim 1, characterized in that: The photographing unit further comprises: The second position adjustment component is arranged between the first position adjustment component and the camera, and is used to drive the camera to move along a second direction, the second direction is the width direction of the pole piece, and the second direction is perpendicular to the first direction.

3. The tab appearance inspection device according to claim 2, characterized in that: The first position adjustment component comprises: A first guide portion, extending along the first direction and disposed on the base; A first mounting portion is slidably disposed on the first guide portion along the first direction, and the second position adjustment component is disposed on the first mounting portion; The first driving member is installed on the base, and the first driving member is used to drive the first mounting part to move along the first direction.

4. The tab appearance inspection device according to claim 3, characterized in that: The second position adjustment component comprises: A second guide portion extending along the second direction and disposed on the first mounting portion; A second mounting portion, slidably disposed on the second guide portion along the second direction, the second mounting portion being used for mounting the camera; The second driving member is disposed on the first mounting portion, and is used for driving the second mounting portion to move along the second direction.

5. The tab appearance inspection device according to claim 4, characterized in that: The photographing unit further comprises: A light source component is disposed on the second mounting portion, and the light source component is used to be disposed toward the pole piece.

6. The tab appearance inspection device according to claim 5, characterized in that: The light source is an annular light source, and the center line of the annular light source is coaxially arranged with the center line of the camera.

7. The tab appearance inspection device according to claim 1, characterized in that: The tab appearance detection device further comprises: A third position adjustment component is used to drive the plane mirror to move along the first direction.

8. The tab appearance inspection device according to claim 7, characterized in that: The third position adjustment component comprises: A third guide portion, extending along the first direction and disposed on the base; A third mounting portion, slidably disposed on the third guide portion along the first direction, and the plane mirror is disposed on the third mounting portion; A third driving member is installed on the base, and the third driving member is used to drive the third mounting portion to move along the first direction.

9. The tab appearance inspection device according to claim 8, characterized in that: The plane mirror is rotatably mounted on the third mounting portion.

10. The tab appearance inspection device according to claim 1, characterized in that: The angle between the plane mirror and the first direction is 45°.

11. The tab appearance inspection device according to claim 1, characterized in that: The number of the plane mirrors is two, and the two plane mirrors are distributed on the base at intervals along the first direction.

12. A battery manufacturing device, characterized in that: It comprises a tab appearance detection device according to any one of claims 1-11.

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