Deviation correcting device and battery production line

Abstract

The utility model relates to the technical field of battery manufacturing, and provides a deviation correcting device and a battery production line. The deviation correcting device comprises a detection assembly used for detecting a first distance between an adapter piece and one side of the width direction of an end cover and detecting a second distance between the adapter piece and the other side of the width direction of the end cover; and the deviation rectifying assembly is used for being inserted into a first gap between the first electrode assembly and the end cover and a second gap between the second electrode assembly and the end cover under the condition that any one of the first distance and the second distance exceeds a preset distance range so as to adjust the relative position of the switching piece and the end cover. According to the technical scheme, the irreparable cost loss caused by the fact that welding is completed after the switching piece deviates can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing, in particular to a deviation rectifying 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] At present, in the battery production process, welding of parts is needed and welding quality detection is carried out. For the welding quality detection of the adapter plate and the end cover of the battery monomer, manual and post-welding detection are usually used. At this time, the welding action has been completed, and if the welding is poor, it cannot be salvaged. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a deviation rectifying device and a deviation rectifying method to reduce the cost loss caused by the deviation of the adapter plate after the welding is completed and cannot be salvaged. The purpose is achieved by the following technical solutions:

[0005] In a first aspect, the present application provides a deviation rectifying device for rectifying the position of an adapter plate and an end cover before welding. The adapter plate is arranged on one side of the thickness direction of the end cover and has a first distance and a second distance from both sides of the width direction of the end cover. The first electrode assembly and the second electrode assembly are arranged on both sides of the width direction of the end cover, and the first electrode assembly and the second electrode assembly have a first gap and a second gap with the end cover, respectively. The first electrode assembly and the second electrode assembly are connected to the adapter plate. The deviation rectifying device comprises a detection assembly for detecting the first distance of the adapter plate and the end cover on one side of the width direction, and detecting the second distance of the adapter plate and the end cover on the other side of the width direction. A deviation rectifying assembly is used to insert the first gap and the second gap to adjust the relative position of the adapter plate and the end cover when either of the first distance and the second distance exceeds the preset distance range.

[0006] According to the deviation rectifying device provided in the application, the adapter piece needs to be positioned before being welded with the electrode terminal on the end cover, so as to reduce the welding quality problems such as welding through or false welding caused by the deviation of the adapter piece relative to the end cover. The first connecting part and the second connecting part of the adapter piece are respectively welded with the tab of the first electrode assembly and the tab of the second electrode assembly. The first gap and the second gap on the two sides of the adapter piece in the width direction are ideally the same and are the calibration gap value. The first distance and the second distance on the two sides of the adapter piece in the width direction relative to the end cover are also ideally the same and are the calibration distance value. However, since the tab has a certain flexibility and will be deformed, when the deformation is large, the position of the adapter piece will deviate relative to the end cover. Therefore, before the adapter piece is welded with the end cover, the detection assembly is used to detect the first distance on one side of the adapter piece in the width direction relative to the end cover, and the second distance on the other side of the adapter piece in the width direction relative to the end cover. When any one of the first distance and the second distance exceeds the preset distance range, the deviation rectifying assembly is used to insert into the first gap between the first electrode assembly and the end cover and the second gap between the second electrode assembly and the end cover, so as to adjust the relative position of the first electrode assembly and the second electrode assembly relative to the end cover, and make the first gap and the second gap reach the calibration gap value. In the process of adjusting the position of the first electrode assembly and the second electrode assembly, the shape of the tab of the first electrode assembly and the tab of the second electrode assembly is also adjusted, so that the deformation of the tab of the first electrode assembly and the tab of the second electrode assembly can be improved or eliminated, and then the position of the adapter piece can be changed to adjust the relative position of the adapter piece relative to the end cover, and the first distance and the second distance can be set within the preset range, so that the placement position of the adapter piece is rectified before welding, and the cost loss caused by the deviation of the adapter piece after welding is reduced.

[0007] In addition, the deviation rectifying device provided in the application can also have the following additional technical features:

[0008] In some embodiments of the application, the deviation rectifying assembly comprises a first deviation rectifying piece having a first plug-in slot, the size of the first plug-in slot being matched with the size of the end cover in the width direction of the end cover, and two first deviation rectifying parts being formed on both sides of the first plug-in slot in the width direction of the end cover, the two first deviation rectifying parts being used for being inserted into the first gap and the second gap from one side of the end cover in the length direction, respectively, wherein the size of the first deviation rectifying part in the width direction of the end cover is a preset value.

[0009] In the technical scheme, the first deviation rectifying member is arranged on one side of the length direction of the end cover, when the first distance and the second distance exceed the preset distance range, the first insertion slot of the first deviation rectifying member is inserted and matched with one side of the length direction of the end cover, and the two first deviation rectifying parts of the first deviation rectifying member are respectively inserted into the first gap and the second gap, so that the positions of the first electrode assembly and the second electrode assembly can be quickly rectified. Since the tabs of the first electrode assembly and the second electrode assembly are all welded to the adapter sheet, by improving the efficiency of adjusting the relative positions of the first electrode assembly and the second electrode assembly and the end cover, the relative positions of the adapter sheet and the end cover can be quickly adjusted to meet the welding spacing requirement, and the risk that the relative positions of the adapter sheet and the end cover are still deviated due to inconsistent position adjustment of the first electrode assembly and the second electrode assembly along the length direction of the end cover is reduced.

[0010] In some embodiments of the present application, the deviation rectifying assembly further comprises a second deviation rectifying member, the second deviation rectifying member has a second insertion slot, along the width direction of the end cover, the second insertion slot is matched with the size of the end cover, two second deviation rectifying parts are formed on both sides of the second insertion slot along the width direction of the end cover, and the two second deviation rectifying parts are respectively inserted into the first gap and the second gap from the other side of the length direction of the end cover, wherein along the width direction of the end cover, the size of the second deviation rectifying part is the same as the size of the first deviation rectifying part.

[0011] In the technical scheme, the first deviation rectifying member and the second deviation rectifying member are respectively arranged on both sides of the length direction of the end cover, when the first distance and the second distance exceed the preset distance range, the first deviation rectifying member and the second deviation rectifying member are respectively moved from both sides of the length direction of the end cover to approach each other, the first insertion slot of the first deviation rectifying member is inserted and matched with one side of the length direction of the end cover, the second insertion slot of the second deviation rectifying member is inserted and matched with the other side of the length direction of the end cover, and the two first deviation rectifying parts of the first deviation rectifying member and the two second deviation rectifying parts of the second deviation rectifying member are respectively inserted into the first gap and the second gap, so that the positions of the first electrode assembly and the second electrode assembly can be quickly rectified. Since the tabs of the first electrode assembly and the second electrode assembly are all welded to the adapter sheet, by improving the efficiency of adjusting the relative positions of the first electrode assembly and the second electrode assembly and the end cover, the relative positions of the adapter sheet and the end cover can be quickly adjusted to meet the welding spacing requirement, and the risk that the relative positions of the adapter sheet and the end cover are still deviated due to inconsistent position adjustment of the first electrode assembly and the second electrode assembly along the length direction of the end cover is reduced.

[0012] In some embodiments of the present application, the deviation rectifying assembly further comprises a driving assembly, the driving assembly is connected with the deviation rectifying assembly and is used for driving the deviation rectifying assembly to move.

[0013] In the technical scheme, the driving assembly is arranged to drive the deviation rectifying assembly to move and insert into the first gap and the second gap, so that the deviation rectifying efficiency is improved and the error caused by manual operation is reduced.

[0014] In some embodiments of the present application, the driving assembly comprises cylinders connected with the first deviation rectifying member and the second deviation rectifying member respectively, each of the cylinders comprises a cylinder barrel, a piston and a piston rod, the piston is arranged in the cylinder barrel, and two ends of the piston rod are connected with the piston and the deviation rectifying assembly.

[0015] In the technical scheme, the cylinder has simple structure, is convenient to assemble with the deviation rectifying assembly, helps to reduce cost and improve the deviation rectifying efficiency.

[0016] In some embodiments of the present application, a position sensor is arranged outside the cylinder, and the position sensor is used to detect the movement stroke of the piston rod.

[0017] By arranging the position sensor outside the cylinder, the cylinder can be stopped in time after the piston rod of the cylinder drives the deviation rectifying assembly to move to the position, so that the risk of damage to the first deviation rectifying member and the second deviation rectifying member is reduced.

[0018] In some embodiments of the present application, the deviation rectifying device further comprises a controller, and the controller is electrically connected with the driving assembly and the detecting assembly.

[0019] In the technical scheme, the controller is electrically connected with the driving assembly and the detecting assembly, so that the driving assembly can be automatically controlled to perform actions according to the data detected by the detecting assembly, and the structure and principle are relatively simple and easy to realize.

[0020] In some embodiments of the present application, the deviation rectifying device further comprises a support table, and the support table is provided with a fixing member used to fix the end cover.

[0021] In the technical scheme, the end cover is fixed to the support table by the fixing member before the position of the adapter plate is rectified, so that the risk of rectifying failure of the adapter plate caused by the change of the position of the end cover during the rectification of the position of the adapter plate is reduced, and the accuracy and efficiency of rectifying the adapter plate are further improved.

[0022] In some embodiments of the present application, the detecting assembly comprises an image acquisition device.

[0023] In the technical solution, the image acquisition device can be a charge coupled device camera, which is a device for capturing light signals by using a semiconductor device and converting the light signals into digital images. The working principle of the charge coupled device camera is to convert the light signals into electric charge signals by a photosensitive element, and then convert the electric charge signals into digital signals by an analog-to-digital converter. Due to the characteristics of high stability, high resolution and low noise, the accuracy of measuring and detecting the first distance and the second distance is improved, and the accuracy of correcting the position of the adapter sheet is improved.

[0024] In some embodiments of the present application, the detection assembly further comprises an auxiliary light source member for providing a light source.

[0025] In the technical solution, the auxiliary light source member can provide an auxiliary light source for the image acquisition device, so that the accuracy of the image acquisition device during visual detection is improved.

[0026] In a second aspect, the present application provides a battery production line comprising the correction device according to any one of the embodiments of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the present application. Moreover, like reference numerals designate like parts throughout the several views in the drawings. In the drawings:

[0028] Figure 1 A structural schematic view of the correction device from one perspective for some embodiments of the present application;

[0029] Figure 2 A structural schematic view of the correction device from another perspective for some embodiments of the present application;

[0030] Figure 3 A partial structural schematic view of the correction device before correcting the adapter sheet for some embodiments of the present application;

[0031] Figure 4 A partial structural schematic view of the correction device when correcting the adapter sheet for some embodiments of the present application.

[0032] wherein, Figure 1 and Figure 2 The X-axis direction of the coordinate system in the and Y-axis direction represents the width direction of the end cover.

[0033] The reference signs are as follows:

[0034] 10, end cover; 11, first distance; 12, second distance; 13, first gap; 14, second gap; 20, adapter plate; 30, first electrode assembly; 31, positive electrode tab; 32, negative electrode tab; 40, second electrode assembly; 51, first deviation rectifying piece; 511, first insertion slot; 512, first deviation rectifying part; 52, second deviation rectifying piece; 521, second insertion slot; 522, second deviation rectifying part; 60, detection assembly; 61, image acquisition device; 62, auxiliary light source piece; 70, air cylinder; 80, support table; 81, fixing piece; 90, bracket. DETAILED DESCRIPTION

[0035] The embodiments of the technical solutions 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 solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0036] 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 terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "include" and "have" and any variations thereof used in the specification and claims of the present application and the above description of the drawings are intended to cover the non-exclusive inclusion.

[0037] In the description of the embodiments of the present application, the technical terms "first", "second", etc. 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 indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0038] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0040] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0041] In the description of the embodiments of the present 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", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does 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 present application.

[0042] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0043] At present, from the development of market situation, the application of battery device is more and more extensive. The battery device 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 bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as military equipment, aerospace and other fields. With the continuous expansion of the application field of battery device, the demand of its market is also increasing.

[0044] In the process of battery production, welding of parts is required and welding quality detection is required, wherein the adapter plate in the battery device is used for welding connection with the end cover of the battery monomer, and the distance between the adapter plate and the two sides of the width direction of the end cover needs to be maintained at a calibration distance value before welding. However, since the adapter plate is also welded with the tab of the electrode assembly, the tab has a certain flexibility and usually deforms, which causes the adapter plate to be inclined relative to the end cover and affects the welding quality. In the related art, the quality detection after welding of the adapter plate and the end cover of the battery monomer usually adopts manual and post-welding detection to identify and monitor whether the adapter plate is offset. At this time, the welding action has been completed, and if the adapter plate is offset, the welding defects such as virtual welding and welding through have occurred and cannot be rescued.

[0045] In order to solve the problem that the offset of the adapter plate occurs but the welding action is completed, resulting in the occurrence of poor welding and the inability to perform rescue, the present application designs a correction device for correcting the position of the adapter plate before the adapter plate is welded with the end cover of the battery monomer, wherein the adapter plate is arranged on one side of the thickness direction of the end cover, and the first electrode assembly and the second electrode assembly are arranged on both sides of the width direction of the end cover, respectively, the first electrode assembly and the second electrode assembly have first gap and second gap between the end cover, respectively, and the lug of the first electrode assembly and the second electrode assembly is welded and connected with the adapter plate along both sides of the width direction of the end cover, respectively, the correction device further comprises a detection assembly and a correction assembly, the detection assembly is used to measure the first distance and the second distance, and the correction assembly is used to insert the first gap and the second gap to adjust the relative position between the first electrode assembly and the second electrode assembly and the end cover when any one of the first distance and the second distance exceeds the preset distance range, so as to adjust the shape of the lug to a flat state, and then the correction of the adapter plate before welding can be realized to reduce the welding defects between the adapter plate and the end cover.

[0046] The correction device disclosed in the embodiments of the present application is used for the production and manufacturing of battery devices, and is particularly used for correcting the position of the adapter plate and the end cover of the battery monomer before welding. By using the correction device provided by the present application, the welding defects of the adapter plate and the end cover can be reduced, which helps to reduce the production cost of the battery device.

[0047] Please refer to Figures 1 to 4 , Figure 1 A perspective structural schematic view of the correction device provided by some embodiments of the present application is provided. Figure 2 Another perspective structural schematic view of the correction device provided by some embodiments of the present application is provided. Figure 3 A partial structural schematic view of the correction device provided by some embodiments of the present application before correcting the adapter plate is provided. Figure 4A partial structure diagram of a correction device provided by some embodiments of the present application is shown when the adapter plate is being corrected. The correction device provided by the embodiments of the present application is used to correct the position of the adapter plate 20 and the end cover 10 before welding. The adapter plate 20 is arranged on one side of the end cover 10 in the thickness direction, and has a first distance and a second distance from the two sides of the end cover 10 in the width direction. The end cover 10 is respectively provided with a first electrode assembly 30 and a second electrode assembly 40 on the two sides in the width direction. The first electrode assembly 30 and the second electrode assembly 40 respectively have a first gap and a second gap with the end cover 10, and are respectively connected with the adapter plate. The correction device comprises a detection assembly 60 and a correction assembly. The detection assembly 60 is used to detect the first distance 11 of the adapter plate 20 and the end cover 10 on one side in the width direction, and detect the second distance 12 of the adapter plate 20 and the end cover 10 on the other side in the width direction. The correction assembly is used to insert the first gap 13 and the second gap 14 to adjust the relative position of the adapter plate 20 and the end cover 10 when any one of the first distance 11 and the second distance 12 exceeds a preset distance range.

[0048] In the embodiments, the end cover 10 is an end cover 10 of a battery monomer. The battery monomer comprises a shell and the end cover 10. The shell has an opening, and the end cover 10 is used to cover the opening to form a sealed containing cavity with the shell.

[0049] In the embodiments, the adapter plate 20 is a conductive connecting piece, for example, a tab. The adapter plate 20 is used to form series connection, parallel connection or series-parallel connection between a plurality of battery monomers in a battery device to simultaneously output electric energy for a power consumption device. The adapter plate 20 needs to be positioned before being welded with the electrode terminal on the end cover 10 to reduce the offset of the adapter plate 20 relative to the end cover 10, which causes welding quality problems such as welding through or false welding.

[0050] Exemplarily, the adapter plate 20 comprises a main body part, a first connecting part and a second connecting part. The first connecting part and the second connecting part can be protruding segments symmetrically arranged along the width direction of the end cover 10, and the protruding segments extend along the length direction of the end cover 10.

[0051] The first electrode assembly 30 and the second electrode assembly 40 are used to be stacked after the adapter plate 20 is welded with the electrode terminal on the end cover 10, and are contained in the containing cavity defined between the end cover 10 and the shell. The first electrode assembly 30 and the second electrode assembly 40 can be respectively clamped and fixed by a clamp.

[0052] Exemplarily, the measurement assembly is a component for measuring distance, for example, a micrometer, an image acquisition device 61, a laser range finder, etc.

[0053] Exemplarily, the deviation rectifying assembly comprises at least one deviation rectifying piece, the deviation rectifying piece has a deviation rectifying part capable of being inserted into the first gap 13 and the second gap 14, and the width dimension of the deviation rectifying part is equal to the nominal gap value of the first gap 13 and the second gap 14, when reaching the nominal gap value, the tabs of the first electrode assembly 30 and the second electrode assembly 40 are in a flat state.

[0054] Exemplarily, the preset distance range is set in the range of 1.5mm-2mm, but the nominal distance value of different specifications and different types of battery monomers is set according to actual needs. Similarly, the nominal gap value of the first gap 13 and the second gap 14 is also reasonably set according to the needs of different specifications and different types of battery monomers.

[0055] Specifically, the adapter piece 20 has a first connecting part and a second connecting part, the first connecting part and the second connecting part are respectively welded with the tabs of the first electrode assembly 30 and the second electrode assembly 40, the first electrode assembly 30 and the second electrode assembly 40 are in an ideal state and should be the same as the first gap 13 and the second gap 14 on both sides of the width direction of the adapter piece 20, and the first gap 13 and the second gap 14 are the nominal gap value, the first distance 11 and the second distance 12 on both sides of the width direction of the adapter piece 20 and the end cover 10 should also be in an ideal state and should be the same as the nominal distance value, but since the tabs have a certain flexibility and will be bent and deformed, when the deformation is large, the position of the adapter piece 20 will be offset relative to the end cover 10. Therefore, by detecting the first distance 11 on one side of the width direction of the adapter piece 20 and the end cover 10 before welding the adapter piece 20 and the end cover 10, and detecting the second distance 12 on the other side of the width direction of the adapter piece 20 and the end cover 10, when any one of the first distance 11 and the second distance 12 exceeds the preset distance range, then the deviation rectifying assembly is used to insert the first gap 13 between the first electrode assembly 30 and the end cover 10, and the second gap 14 between the second electrode assembly 40 and the end cover 10, so as to adjust the relative position of the first electrode assembly 30 and the second electrode assembly 40 and the end cover 10, and make the first gap 13 and the second gap 14 reach the nominal gap value (preset value), the position of the first electrode assembly 30 and the second electrode assembly 40 will be adjusted in the process of being adjusted, and the shape of the tabs of the first electrode assembly 30 and the second electrode assembly 40 will also be adjusted, so that the deformation of the tabs of the first electrode assembly 30 and the second electrode assembly 40 can be improved or eliminated, and then the position of the adapter piece 20 can be changed to adjust the relative position of the adapter piece 20 and the end cover 10, and the first distance 11 and the second distance 12 can be controlled within the preset distance range, so that the placement position of the adapter piece 20 is rectified before welding, and the cost loss caused by the offset of the adapter piece 20 after the welding is completed is reduced.

[0056] Please see Figures 1 to 4According to some embodiments of the present application, the deviation rectifying assembly comprises a first deviation rectifying member 51. The first deviation rectifying member 51 has a first insertion slot 511 which is adapted to the dimension of the end cover 10 in the width direction, and two first deviation rectifying portions 512 are formed on both sides of the first insertion slot 511 in the width direction of the end cover 10, and the two first deviation rectifying portions 512 are respectively inserted into the first gap 13 and the second gap 14 from one side of the end cover 10 in the length direction, wherein the dimension of the first deviation rectifying portion 512 in the width direction of the end cover 10 is a preset value.

[0057] Exemplarily, the first deviation rectifying portion 512 is an insertion block or an insertion sheet symmetrically arranged on both sides of the first insertion slot 511 in the width direction of the end cover 10.

[0058] The first deviation rectifying member 51 is arranged on one side of the end cover 10 in the length direction, and when the first distance 11 and the second distance 12 exceed the preset distance range, the positions of the first electrode assembly 30 and the second electrode assembly 40 can be quickly rectified by inserting the two first deviation rectifying portions 512 of the first deviation rectifying member 51 into the first gap 13 and the second gap 14 respectively, so as to reduce the risk of jamming. Since the tab of the first electrode assembly 30 and the tab of the second electrode assembly 40 are both welded to the adapter sheet 20, by improving the efficiency of adjusting the relative position of the first electrode assembly 30 and the second electrode assembly 40 to the end cover 10, the relative position of the adapter sheet 20 to the end cover 10 can be quickly adjusted to meet the welding spacing requirement, and the risk of the relative position of the adapter sheet 20 to the end cover 10 still deviating due to the inconsistent adjustment of the positions of the first electrode assembly 30 and the second electrode assembly 40 in the length direction of the end cover 10 is reduced.

[0059] According to some embodiments of the present application, the deviation rectifying assembly further comprises a second deviation rectifying member, and the second deviation rectifying member has a second insertion slot 521 which is adapted to the dimension of the end cover 10 in the width direction, and two second deviation rectifying portions 522 are formed on both sides of the second insertion slot 521 in the width direction of the end cover 10, and the two second deviation rectifying portions 522 are respectively inserted into the first gap 13 and the second gap 14 from the other side of the end cover 10 in the length direction, wherein the dimension of the second deviation rectifying portion 522 in the width direction of the end cover 10 is the same as the dimension of the first deviation rectifying portion 512.

[0060] Exemplarily, the second deviation rectifying portion 522 is an insertion block or an insertion sheet symmetrically arranged on both sides of the second insertion slot 521 in the width direction of the end cover 10.

[0061] The first and second deviation rectifying members are arranged on both sides of the length direction of the end cover 10. When the first and second distances 11 and 12 exceed the preset distance range, the first and second deviation rectifying members are moved towards each other from both sides of the length direction of the end cover 10, so that the first insertion groove 511 of the first deviation rectifying member is inserted into one side of the length direction of the end cover 10, the second insertion groove 521 of the second deviation rectifying member is inserted into the other side of the length direction of the end cover 10, and the two first deviation rectifying parts 512 of the first deviation rectifying member and the two second deviation rectifying parts 522 of the second deviation rectifying member are inserted into the first and second gaps 13 and 14 respectively. Therefore, the positions of the first and second electrode assemblies 30 and 40 can be quickly rectified. Since the tabs of the first and second electrode assemblies 30 and 40 are welded to the adapter plate 20, the relative position adjustment efficiency of the first and second electrode assemblies 30 and 40 and the end cover 10 is improved, so that the relative position of the adapter plate 20 and the end cover 10 can be quickly adjusted to meet the welding distance requirement, and the risk of the relative position of the adapter plate 20 and the end cover 10 being still deviated due to inconsistent position adjustment of the first and second electrode assemblies 30 and 40 along the length direction of the end cover 10 is reduced.

[0062] According to some embodiments of the present application, the deviation rectifying assembly further comprises a driving assembly connected with the first and second deviation rectifying members 51 and 52 for driving the first and second deviation rectifying members 51 and 52 to move.

[0063] For example, the driving assembly can be a linear motor or a pneumatic cylinder, an oil cylinder, etc.

[0064] By arranging the driving assembly connected with the first and second deviation rectifying members 51 and 52, the first and second deviation rectifying members 51 and 52 are driven to move relatively by the driving assembly, so that the deviation rectifying efficiency is improved and the error caused by human operation is reduced.

[0065] Please refer to Figure 1 and Figure 2 According to some embodiments of the present application, the driving assembly comprises a pneumatic cylinder, the pneumatic cylinder comprises a cylinder barrel, a piston and a piston rod, the piston is arranged in the cylinder barrel, and the two ends of the piston rod are connected with the piston and the deviation rectifying assembly.

[0066] The pneumatic cylinder is a device for driving mechanical movement by compressed air. The linear movement of the piston rod in the pneumatic cylinder can be transmitted to the first or second deviation rectifying member 51 or 52.

[0067] The pneumatic cylinder has simple structure and is easy to assemble and connect with the first and second deviation rectifying members 51 and 52, which helps to reduce the cost.

[0068] It can be understood that when the deviation rectifying assembly only comprises the first deviation rectifying piece 51, the number of the air cylinders 70 is one. When the deviation rectifying assembly comprises the first deviation rectifying piece 51 and the second deviation rectifying piece 52, the number of the air cylinders 70 is two, and the two air cylinders are connected with the first deviation rectifying piece 51 and the second deviation rectifying piece 52 respectively.

[0069] According to some embodiments of the present application, the outer part of the air cylinder 70 is provided with a position sensor (not shown in the figure), which is used to detect the movement stroke of the piston rod.

[0070] By providing the position sensor on the outer part of the air cylinder 70, the air cylinder 70 can be stopped in time after the position sensor detects that the piston rod of the air cylinder 70 drives the first deviation rectifying piece 51 or the second deviation rectifying piece 52 to move to the position, thereby reducing the risk of damage of the first deviation rectifying piece 51 and the second deviation rectifying piece 52.

[0071] According to some embodiments of the present application, the deviation rectifying device further comprises a controller (not shown in the figure), which is electrically connected with the driving assembly and the detection assembly 60.

[0072] In the embodiment, the controller is a programmable logic controller.

[0073] The controller is electrically connected with the driving assembly and the detection assembly 60, so that the driving assembly can be automatically controlled to perform actions according to the data detected by the detection assembly 60, and the structure and principle are relatively simple and easy to realize.

[0074] Please refer to Figures 1 to 4 According to some embodiments of the present application, the number of the adapter pieces 20 is two, and the two adapter pieces 20 are arranged at intervals along the length direction of the end cover 10 and are respectively used for welding connection with the positive electrode terminal and the negative electrode terminal on the end cover 10; the first electrode assembly 30 and the second electrode assembly 40 each comprise a positive tab 31 and a negative tab 32 arranged along the length direction of the end cover 10, the positive tabs 31 of the first electrode assembly 30 and the second electrode assembly 40 are correspondingly arranged and are respectively welded with the first connecting part and the second connecting part of one adapter piece 20, and the negative tabs 32 of the first electrode assembly 30 and the second electrode assembly 40 are correspondingly arranged and are respectively welded with the first connecting part and the second connecting part of the other adapter piece 20.

[0075] It can be understood that the positive electrode terminal and the negative electrode terminal are arranged at intervals in the length direction of the end cover 10, and therefore, by arranging two adapter tabs 20, the two adapter tabs 20 are respectively used for welding connection with the positive electrode terminal and the negative electrode terminal, the positive electrode tab 31 of the first electrode assembly 30 and the second electrode assembly 40 is welded to the first connecting portion and the second connecting portion of one adapter tab 20 respectively, and the negative electrode tab 32 of the first electrode assembly 30 and the second electrode assembly 40 is welded to the first connecting portion and the second connecting portion of the other adapter tab 20 respectively, when the position of the adapter tab 20 needs to be corrected, the first correction device 51 and the second correction device 52 are used to approach each other and are respectively inserted into the first gap 13 and the second gap 14, so that the position of the two adapter tabs 20 can be corrected at the same time, which helps to improve the efficiency of correcting the position of the two adapter tabs 20.

[0076] According to some embodiments of the present application, the correction device further comprises a support table, and the support table is provided with a fixing member, and the fixing member is used to fix the end cover 10.

[0077] Exemplarily, the fixing member can be a clamp used to clamp the end cover 10.

[0078] Before correcting the position of the adapter tab 20, the end cover 10 is fixed to the support table by the fixing member, so that the risk of failure of the adapter tab 20 caused by the change of the position of the end cover 10 during the process of correcting the position of the adapter tab 20 can be reduced, and therefore, the accuracy and efficiency of correcting the position of the adapter tab 20 can be further improved.

[0079] Please refer to Figure 1 and Figure 2 According to some embodiments of the present application, the detection assembly 60 comprises an image acquisition device 61.

[0080] The image acquisition device 61 can be a charge-coupled device camera, which is a device that captures light signals and converts them into digital images using semiconductor devices. The working principle of the charge-coupled device camera is to convert the light signal into an electric charge signal by a photosensitive element, and then convert it into a digital signal by an analog-to-digital converter. Due to its high stability, high resolution and low noise, etc., the accuracy of measuring and detecting the first distance 11 and the second distance 12 can be improved, and therefore, the accuracy of correcting the position of the adapter tab 20 can be improved.

[0081] Please refer to Figure 1 and Figure 2 According to some embodiments of the present application, the detection assembly 60 further comprises an auxiliary light source member 62, and the auxiliary light source member 62 is used to provide a light source.

[0082] By setting the auxiliary light source 62, the auxiliary light source 62 can provide auxiliary light source for the image acquisition device 61, so that the accuracy of the image acquisition device 61 when performing visual inspection can be improved.

[0083] According to some embodiments of the present application, the present application also provides a battery production line comprising the deviation rectifying device according to any one of the above embodiments.

[0084] The battery production line provided by the embodiments of the present application also has the technical effects of any one of the above embodiments because it comprises the deviation rectifying device according to any one of the above embodiments.

[0085] According to some embodiments of the present application, referring to Figures 1 to 4The application provides a deviation rectifying device for rectifying the position of a adapter piece and an end cover before welding, the adapter piece is arranged on one side of the end cover in the thickness direction and is used for connecting with an electrode terminal on the end cover, and the adapter piece is provided with a first connecting part and a second connecting part on both sides along the width direction of the end cover, the end cover is provided with a first electrode assembly and a second electrode assembly on both sides along the width direction, the first electrode assembly has a first gap with the end cover, the lug of the first electrode assembly is connected with the first connecting part, the second electrode assembly has a second gap with the end cover, and the lug of the second electrode assembly is welded with the second connecting part, and the deviation rectifying device comprises an image acquisition device 61, an auxiliary light source 62, a first deviation rectifying part 51, a second deviation rectifying part 52, a controller and two air cylinders. Wherein the image acquisition device 61 is arranged on a support table through a support and is used for detecting a first distance 11 of the adapter piece 20 and the end cover 10 on one side along the width direction and detecting a second distance 12 of the adapter piece 20 and the end cover 10 on the other side along the width direction, and the auxiliary light source 62 is used for providing auxiliary light source for the image acquisition device 61 when detecting; the first deviation rectifying part 51 has a first plug-in groove 511 used for plug-in cooperation with one end of the end cover 10 along the length direction, the first plug-in groove 511 is symmetrically formed with two first plug-in parts on both sides along the width direction of the end cover 10, the second deviation rectifying part 52 has a second plug-in groove 521 used for plug-in cooperation with the other end of the end cover 10 along the length direction, the second plug-in groove 521 is symmetrically formed with two second plug-in parts on both sides along the width direction of the end cover 10, the first deviation rectifying part 51 and the second deviation rectifying part 52 are connected with the two air cylinders respectively, the controller is electrically connected with the image acquisition device 61 and the two air cylinders, and the first deviation rectifying part 51 and the second deviation rectifying part 52 are used for being close to each other from both ends along the length direction of the end cover 10 and making two first deviation rectifying parts 512 and two second deviation rectifying parts 522 be inserted into a first gap 13 and a second gap 14 on both sides along the length direction of the end cover 10 respectively under the condition that any one of the first distance 11 and the second distance 12 exceeds a preset distance range, so as to adjust the relative position between the first electrode assembly 30, the second electrode assembly 40 and the end cover 10 and drive the relative position between the adapter piece 20 and the end cover 10, until the first distance 11 and the second distance 12 are controlled in the preset distance range.

[0086] The above is only the preferred specific embodiment of the application, but the protection scope of the application is not limited to this, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A deviation correcting device for correcting the position of a tab provided on one side of the thickness direction of an end cover and having a first distance and a second distance from both sides of the width direction of the end cover, before the tab and the end cover are welded, wherein a first electrode assembly and a second electrode assembly are provided on both sides of the width direction of the end cover, respectively, and the first electrode assembly and the second electrode assembly have a first gap and a second gap from the end cover, respectively, and the first electrode assembly and the second electrode assembly are connected to the tab, respectively. The deviation correcting device comprises: a detection assembly for detecting a first distance between the adapter plate and one side of the end cover in the width direction, and detecting a second distance between the adapter plate and the other side of the end cover in the width direction; a deviation correcting assembly for inserting the first gap and the second gap to adjust the relative position between the adapter plate and the end cover when either of the first distance and the second distance exceeds a preset distance range.

2. The correction device of claim 1, wherein The deviation correcting assembly comprises: a first deviation correcting member having a first insertion slot, which is adapted to the size of the end cover in the width direction of the end cover, and two first deviation correcting portions formed on both sides of the first insertion slot in the width direction of the end cover, which are respectively inserted into the first gap and the second gap from one side of the end cover in the length direction, wherein the size of the first deviation correcting portion in the width direction of the end cover is a preset value.

3. The correction device of claim 2, wherein The deviation correcting assembly further comprises: a second deviation correcting member having a second insertion slot, which is adapted to the size of the end cover in the width direction of the end cover, and two second deviation correcting portions formed on both sides of the second insertion slot in the width direction of the end cover, which are respectively inserted into the first gap and the second gap from the other side of the end cover in the length direction, wherein the size of the second deviation correcting portion in the width direction of the end cover is the same as that of the first deviation correcting portion.

4. The correction device according to any one of claims 1 to 3, characterized in that The deviation correcting assembly further comprises a driving assembly connected with the deviation correcting assembly and used for driving the deviation correcting assembly to move.

5. The correction device of claim 4, wherein The driving assembly comprises a cylinder, a piston and a piston rod, the piston is arranged in the cylinder, and both ends of the piston rod are connected with the piston and the deviation correcting assembly.

6. The correction device of claim 5, wherein The cylinder is externally provided with a position sensor for detecting the movement stroke of the piston rod.

7. The correction device of claim 4, wherein The deviation correcting device further comprises a controller electrically connected with the driving assembly and the detection assembly.

8. The correction device according to any one of claims 1 to 3, characterized in that The deviation correcting device further comprises a support table provided with a fixing member for fixing the end cover.

9. The correction device according to any one of claims 1 to 3, characterized in that The detection assembly comprises an image acquisition device.

10. The correction device of claim 9, wherein, The detection assembly further comprises an auxiliary light source member for providing a light source.

11. A battery production line, characterized by The deviation correcting device comprises any one of claims 1-10.

Images