Light leakage detection tool and battery processing equipment

Abstract

The application provides a light leakage detection tool and a battery processing device. The light leakage detection tool comprises a bare battery cell, a laser light-adjustable photo paper, and a shell. The bare battery cell comprises a dummy battery cell and a cover plate. The dummy battery cell has a mounting surface, and the cover plate is detachably mounted on the mounting surface. The laser light-adjustable photo paper covers the mounting surface, and the edge of the laser light-adjustable photo paper is flush with the edge of the mounting surface at least. The laser light-adjustable photo paper comprises a first state and a second state. The shell has an opening. When the dummy battery cell is placed in the shell, the cover plate covers the opening. When the laser light-adjustable photo paper changes from the first state to the second state at the contact position between the cover plate and the opening, it is determined that the contact position between the cover plate and the opening leaks light. The application can reliably avoid damaging the real battery cell. By using the laser light-adjustable photo paper, the light leakage problem can be reliably detected, and the production and processing efficiency and quality can be improved, and the production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery processing technical field generally, concretely relates to a light leakage detection frock and battery processing equipment. BACKGROUND

[0002] In the manufacturing process of square shell lithium battery, laser welding is mainly applied to the welding of battery shell, pole, explosion-proof valve and adapter plate and other components. In the laser welding process, if the laser is not completely irradiated on the battery shell, the surface of the battery cell is not completely penetrated, and the light leakage problem occurs, which may cause the performance of the battery to decrease or the safety hazard. In the related art, for the light leakage problem, the appearance of the battery cell is determined by debugging the equipment and disassembling the battery cell, which may cause the battery cell to be scrapped and affect the production cost. UTILITY MODEL CONTENTS

[0003] In view of the above defects or deficiencies in the prior art, it is desirable to provide a light leakage detection frock and battery processing equipment, which uses a replica battery cell and a replica battery cell and a cover plate detachable connection, which is beneficial to reliably avoid damaging the real battery cell, and by using laser light adjustment paper, it is beneficial to reliably detect the light leakage problem, and thus it is beneficial to improve the production and processing efficiency and production and processing quality, and reduce the production cost.

[0004] In the first aspect, the utility model provides a light leakage detection frock, which comprises:

[0005] The bare battery cell comprises a replica battery cell and a cover plate, the replica battery cell has a mounting surface, and the cover plate is detachably mounted on the mounting surface;

[0006] The laser light adjustment paper is covered on the mounting surface, and the laser light adjustment paper is located between the cover plate and the mounting surface. The edge of the laser light adjustment paper is flush with the edge of the mounting surface at least. The laser light adjustment paper comprises a first state and a second state;

[0007] The shell has an opening, the replica battery cell is placed inside the shell, and the cover plate is covered on the opening;

[0008] The laser processing cover plate contacts the opening, and the laser light adjustment paper changes from the first state to the second state, so that the light leakage of the contact part of the cover plate and the opening is determined.

[0009] As an optional scheme, in the direction parallel to the mounting surface, the edge of the laser light adjustment paper is recessed relative to the inner edge of the opening.

[0010] As an optional scheme, a first positioning part is detachably connected on the mounting surface, a first matching part is provided on the laser light adjustment paper, and the first positioning part and the first matching part are detachably matched to fix the position of the laser light adjustment paper on the mounting surface.

[0011] As an optional solution, the first positioning part comprises at least two first positioning pins, the at least two positioning pins are distributed in a region close to the edge of the mounting surface in the first direction, the first matching part comprises at least two positioning holes opened in the laser light-adjusting paper, the positions of the positioning holes correspond to the positions of the positioning pins; wherein the first direction is the direction of the long side of the simulated battery cell.

[0012] As an optional solution, the mounting surface is provided with a second positioning part connected detachably, the cover plate is provided with a second matching part, when the cover plate is covered on the mounting surface, the second positioning part cooperates with the second matching part to fix the position of the cover plate on the mounting surface.

[0013] As an optional solution, the second positioning part comprises a first magnetic part, the second matching part comprises a second magnetic part, the magnetic properties of the first magnetic part and the second magnetic part are opposite;

[0014] The position of the second magnetic part on the cover plate is movable, by adjusting the position of the second magnetic part, the first magnetic part and the second magnetic part are magnetically attracted to cooperate to adjust the position of the fixed cover plate on the mounting surface.

[0015] As an optional solution, the second positioning part further comprises a second positioning pin, one end of the second positioning pin is detachably mounted on the mounting surface, the other end of the second positioning pin is provided with the first magnetic part.

[0016] As an optional solution, the second positioning pin comprises at least two, the at least two second positioning pins are distributed in a region close to the center of the mounting surface along the first direction, each second positioning pin is provided with the first magnetic part correspondingly; wherein the first direction is the direction of the long side of the simulated battery cell;

[0017] As an optional solution, the first magnetic part and the second magnetic part are one-to-one corresponding and are each provided with a plurality of the first magnetic part and the second magnetic part, the second magnetic part comprises a connecting part and a magnetic attraction part corresponding to each first magnetic part, each magnetic attraction part is connected with the connecting part respectively.

[0018] In the second aspect, the utility model provides a kind of battery processing equipment, including laser equipment and the first aspect's light leakage detection tool, laser equipment is used to laser processing cover plate and the contact of opening.

[0019] The utility model discloses a light leakage detection tool, through setting up the imitation electric core, the detachable mounting of cover plate has on the mounting surface of imitation electric core, still install the laser light modulation photo paper on the mounting surface, and the laser light modulation photo paper is located between the mounting surface and the cover plate, and the edge of laser light modulation photo paper is flush with the edge of mounting surface at least, and the cover plate is covered in the opening, and the contact of laser processing cover plate and opening, and the laser light modulation photo paper changes from the first state to the second state, and then determines the contact of cover plate and opening light leakage. On the one hand, using the imitation electric core instead of the real electric core, is favorable to avoid the problem of damaging the electric core caused by frequent disassembly in the debugging process, and the detachable connection between the imitation electric core and the cover plate is convenient to disassemble and install the cover plate in the debugging process, and is favorable to improve the production and processing efficiency and production and processing quality. On the other hand, through the state change of laser light modulation photo paper, the light leakage problem of cover plate and opening can be reliably detected, and the detachable connection of imitation electric core and cover plate is favorable to the repeated use of imitation electric core, and then the production cost can be reliably reduced, and the potential quality safety hidden danger of light leakage battery is eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the drawings:

[0021] Figure 1 It is a structure schematic view of the light leakage detection tool of the embodiment of the application.

[0022] Figure 2 It is an explosion structure schematic view of the light leakage detection tool of the embodiment of the application.

[0023] Figure 3 It is a structure schematic view of the imitation electric core in the light leakage detection tool of the embodiment of the application.

[0024] Figure 4 It is a structure schematic view of the cover plate in the light leakage detection tool of the embodiment of the application.

[0025] Figure 5 It is a structure schematic view of the shell in the light leakage detection tool of the embodiment of the application.

[0026] In the drawings,

[0027] 100, light leakage detection tool,

[0028] 10, imitation electric core, A1, mounting surface, 11, first positioning part, 12, second positioning part, 121, second positioning pin, 122, first magnetic part, 13, liquid injection hole positioning pin

[0029] 20, cover plate, 21, second cooperation part, 211, magnetic attraction part, 212, connecting part, 22, liquid injection hole

[0030] 30, laser light adjusting paper, 31, first matching part;

[0031] 40, shell, 41, opening; DETAILED DESCRIPTION

[0032] The application will be further described below in conjunction with the embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model.

[0033] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments.

[0034] In a first aspect, the embodiments of the present application provide a light leakage detection tool 100, as shown in Figure 1 and 2 comprising:

[0035] bare cell, the bare cell comprising a dummy cell 10 and a cover plate 20, the dummy cell 10 having a mounting surface A1, and the cover plate 20 being mounted on the mounting surface A1;

[0036] laser light adjusting paper 30, the laser light adjusting paper 30 covering the mounting surface A1, and the laser light adjusting paper 30 being located between the cover plate 20 and the mounting surface A1, the edge of the laser light adjusting paper 30 being flush with at least the edge of the mounting surface A1, and the laser light adjusting paper 30 comprising a first state and a second state;

[0037] shell 40, the shell 40 having an opening 41, the dummy cell 10 being placed inside the shell 40, and the cover plate 20 being covered at the opening 41;

[0038] laser processing the contact between the cover plate 20 and the opening 41, and changing the laser light adjusting paper 30 from the first state to the second state, so as to determine that the cover plate 20 and the opening 41 are in contact.

[0039] It should be noted that in the battery manufacturing process, the whole formed by connecting the aluminum plastic film packaged cell and the cover plate 20 is called a bare cell, the bare cell is placed inside the shell 40, and the cover plate 20 is covered at the opening 41 of the shell 40. The contact between the shell 40 and the cover plate 20 is laser welded to realize the packaging of the cell. Of course, in the battery manufacturing process, it also includes other processing processes of the cell, such as but not limited to laser welding of the pole, the liquid injection port and the explosion-proof valve and the like.

[0040] The dummy battery cell 10 refers to a non-battery cell product made of racing steel or other materials, which is completely consistent with the shape, size, and other specifications of the real battery cell. The mounting surface A1 of the dummy battery cell 10 refers to the surface of the dummy battery cell 10 corresponding to the cover plate 20, which can also be referred to as the small surface of the dummy battery cell 10.

[0041] The cover plate 20 can be mounted on the mounting surface A1 by any detachable connection method. For example, the cover plate 20 is provided with a positioning hole, and the mounting surface A1 is provided with a positioning pin. The cover plate 20 is mounted on the mounting surface A1 by cooperation of the positioning pin and the positioning hole. Of course, in some other embodiments, the cover plate 20 can also be mounted on the mounting surface A1 by buckling of the buckle and the buckle position. In the embodiments of the present application, the detachable connection method of the cover plate 20 is beneficial to facilitate disassembly and installation, so that when the light leakage problem occurs, it is convenient to debug and solve the light leakage problem.

[0042] It can be understood that the laser light adjustment paper 30 is generally used for light adjustment and calibration of laser equipment such as laser welding machines or laser cutting machines. By projecting a laser spot on the paper, the focal length, spot size, light intensity, and other parameters of the laser equipment can be observed and adjusted directly, to ensure the precision and stability of the laser equipment. In the present embodiment, the laser light adjustment paper 30 is provided on the mounting surface A1, which is beneficial to detect whether the contact between the cover plate 20 and the housing 40 leaks light, so that when the light leakage problem occurs, it is beneficial to timely debug the equipment and the like, to ensure the production and processing quality. Wherein, the edge of the laser light adjustment paper 30 is flush with at least the edge of the mounting surface A1 refers to that the laser light adjustment paper 30 completely covers the mounting surface A1, that is, the size and shape of the laser light adjustment paper 30 are completely the same as the size and shape of the mounting surface A1. In this way, it is beneficial to reliably detect whether there is a light leakage problem at the contact between the cover plate 20 and the opening 41 of the housing 40.

[0043] In some embodiments, the edge of the laser light adjustment paper 30 can protrude from part of the edge of the mounting surface A1, that is, the size of the laser light adjustment paper 30 is slightly larger than the size of the mounting surface A1. In this way, it is beneficial to prevent the installation position of the laser light adjustment paper 30 from deviating, so that the light leakage problem can also be reliably detected, and it is beneficial to reduce the installation precision requirement and facilitate installation.

[0044] The first state of the laser light adjustment paper 30 can be the original state of the laser light adjustment paper 30, and the second state of the laser light adjustment paper 30 can be the state of the laser light adjustment paper 30 after laser treatment. For example, the laser light adjustment paper 30 is black in the first state, and white areas appear on the laser light adjustment paper 30 in the second state. For another example, the surface of the laser light adjustment paper 30 is smooth in the first state, and protrusions appear on the surface of the laser light adjustment paper 30 in the second state. The type of the laser light adjustment paper 30 used in actual use is determined.

[0045] The laser light-adjustable photo paper 30 can be directly attached to the mounting surface A1, facilitating disassembly. Of course, the laser light-adjustable photo paper 30 can also be mounted on the mounting surface A1 in any detachable manner. For example, a limiting hole is formed on the laser light-adjustable photo paper 30, and a limiting column is arranged on the mounting surface A1. The laser light-adjustable photo paper 30 is fixed on the mounting surface A1 by limiting the limiting hole and the limiting column. In this way, the laser light-adjustable photo paper 30 is fixed, and the position of the laser light-adjustable photo paper 30 is prevented from deviating.

[0046] In the embodiment of the present application, after the imitation battery cell 10 is placed inside the shell 40, the cover plate 20 is arranged at the opening 41 of the shell 40. The contact part of the cover plate 20 and the opening 41 is treated by laser. After the cover plate 20 is disassembled, the laser light-adjustable photo paper 30 is observed. If the laser light-adjustable photo paper 30 changes from the first state to the second state (for example, the color of a part of the laser light-adjustable photo paper 30 changes from black to white), it is determined that the contact part of the cover plate 20 and the opening 41 leaks light during the laser treatment process, and the laser equipment needs to be adjusted or the structure of the cover plate 20 and other components needs to be checked. If the laser light-adjustable photo paper 30 remains unchanged in the first state, it is determined that the contact part of the cover plate 20 and the opening 41 does not leak light.

[0047] The light leakage detection tool of the embodiment of the present application solves the problem in the prior art that when light leakage occurs, the battery cell needs to be disassembled, causing damage to the battery cell and affecting production cost. The light leakage detection tool of the embodiment of the present application comprises an imitation battery cell 10. The mounting surface A1 of the imitation battery cell 10 detachably mounts a cover plate 20. The mounting surface A1 further covers a laser light-adjustable photo paper 30. The laser light-adjustable photo paper 30 is located between the mounting surface A1 and the cover plate 20. The edge of the laser light-adjustable photo paper 30 is flush with at least the edge of the mounting surface A1. When the imitation battery cell 10 is placed inside the shell 40, the cover plate 20 is arranged at the opening 41. The contact part of the cover plate 20 and the opening 41 is treated by laser. If the laser light-adjustable photo paper 30 changes from the first state to the second state, it is determined that the contact part of the cover plate 20 and the opening 41 leaks light.

[0048] On the one hand, using the imitation battery cell 10 instead of a real battery cell can prevent the problem of frequent disassembly during debugging, which can cause damage to the battery cell. The detachable connection between the imitation battery cell 10 and the cover plate 20 facilitates disassembly and installation of the cover plate 20 during debugging, which can improve production and processing efficiency and quality. On the other hand, the state change of the laser light-adjustable photo paper 30 can reliably detect the light leakage problem at the cover plate 20 and the opening 41. The light leakage detection tool of the present application avoids the problem of using a real battery cell for debugging. The detachable connection of the imitation battery cell 10 and the cover plate 20 facilitates repeated use of the imitation battery cell 10, which can reliably reduce production cost and eliminate potential quality and safety hazards of light leakage from the battery.

[0049] In some embodiments, the edge of the laser light dimming paper 30 is recessed relative to the inner edge of the opening 41 in a direction parallel to the mounting surface A1. Herein, the inner edge of the opening 41 refers to the edge where the inner wall of the opening 41 of the shell 40 is located.

[0050] In this embodiment, the edge of the laser light dimming paper 30 is recessed relative to the inner edge of the opening 41, which is conducive to avoiding the laser light dimming paper 30 from overlapping at the opening 41, thereby avoiding affecting the accuracy of the detection result.

[0051] As a realizable manner, as shown in Figures 1-3 , the mounting surface A1 is provided with a first positioning part 11, and the laser light dimming paper 30 is provided with a first matching part 31. The first positioning part 11 and the first matching part 31 are detachably matched to fix the position of the laser light dimming paper 30 on the mounting surface A1.

[0052] Herein, the first positioning part 11 can be but is not limited to a positioning column, a boss, a positioning pin or a bolt, etc. Correspondingly, the first matching part 31 can be but is not limited to a groove, a hole or a nut, etc.

[0053] In this embodiment, the detachable matching of the first positioning part 11 and the first matching part 31 is conducive to positioning and fixing the laser light dimming paper 30, which facilitates the replacement and disassembly of the laser light dimming paper 30 in the actual processing process.

[0054] In some embodiments, as shown in Figure 3 , the first positioning part 11 includes at least two first positioning pins, and the at least two positioning pins are distributed in the region near the edge of the mounting surface A1 in the first direction (such as the X direction in Figure 3 , the first matching part 31 includes at least two positioning holes opened on the laser light dimming paper 30, and the positions of the positioning holes correspond to the positions of the positioning pins; wherein the first direction is the direction where the long side of the imitation battery 10 is located.

[0055] In this embodiment, the first positioning part 11 includes the positioning pin, and the first matching part 31 includes the positioning hole, which is simple in structure and can reliably position and fix the laser light dimming paper 30, thereby ensuring that the position of the laser light dimming paper 30 on the mounting surface A1 does not deviate. In this embodiment, the positioning pin is arranged in the region near the edge of the mounting surface A1 along the direction where the long side of the imitation battery 10 is located, which is conducive to further stably limiting and fixing the position of the laser light dimming paper 30 and avoiding the problem of edge warping of the laser light dimming paper 30.

[0056] As a realizable manner, the mounting surface A1 is provided with a second positioning part 12, and the cover plate 20 is provided with a second matching part 21. When the cover plate 20 is covered on the mounting surface A1, the second positioning part 12 and the second matching part 21 are matched to fix the position of the cover plate 20 on the mounting surface A1.

[0057] The second positioning part 12 and the first positioning part 11 can be, but are not limited to, positioning columns, bosses, positioning pins, bolts or buckles, etc.; correspondingly, the first matching part 31 can be, but is not limited to, a groove, a hole, a nut or a buckle, etc.

[0058] In this embodiment, the cover plate 20 is fixed and positioned, and the cover plate 20 is convenient to disassemble and install.

[0059] It can be understood that the area deviated to one side on the installation surface A1 of the imitation battery cell 10 is provided with a liquid injection hole positioning pin 13, and the liquid injection hole positioning pin 13 has a foolproof function; in the actual processing process, when the cover plate 20 is installed, the liquid injection hole 22 on the cover plate 20 is aligned and limited with the liquid injection hole positioning pin 13 to realize the preliminary positioning of the cover plate 20, so as to avoid the installation direction error of the cover plate 20. After the cover plate 20 is preliminarily positioned, the second positioning part 12 and the second matching part 21 cooperate to further fix the position of the cover plate 20.

[0060] In some embodiments, the first positioning part 11 is detachably connected with the installation surface A1, and the second positioning part 12 is detachably connected with the installation surface A1.

[0061] The first positioning part 11 and the installation surface A1 can be, but are not limited to, screwed or clamped, etc.; similarly, the second positioning part 12 and the installation surface A1 can be, but are not limited to, screwed or clamped, etc.

[0062] In this embodiment, the first positioning part 11 is detachably connected with the installation surface A1, and the second positioning part 12 is detachably connected with the installation surface A1, which is beneficial to the reuse of the imitation battery cell 10, saves resources, reduces production and processing cost, and improves production and processing efficiency.

[0063] As an implementable way, as shown in Figure 3 and 4 The second positioning part 12 includes a first magnetic part 122, and the second matching part 21 includes a second magnetic part, and the first magnetic part 122 and the second magnetic part are opposite in magnetic property;

[0064] The position of the second magnetic part on the cover plate 20 is movable, and by adjusting the position of the second magnetic part, the first magnetic part 122 and the second magnetic part are magnetically attracted and matched to adjust the position of the fixed cover plate 20 on the installation surface A1.

[0065] In this embodiment, the second positioning part 12 and the second matching part 21 are magnetically attracted and matched, which is beneficial to reliably fixing the position of the cover plate 20 while being convenient to disassemble.

[0066] The position of the second magnetic member on the cover plate 20 is movable, which means that the second magnetic member is movably connected with the cover plate 20. By moving the second magnetic member, the cover plate 20 can be positioned first. After the position of the cover plate 20 is positioned, the second magnetic member is moved to the region magnetically attracted to the first magnetic member 122. The second magnetic member is magnetically attracted to the first magnetic member 122, and the position of the cover plate 20 is fixed. Specifically, the second magnetic member can be directly placed on the cover plate 20 without the need for additional connection structure, which is convenient to operate and easy to implement, and is conducive to improving the production and processing efficiency, and is conducive to the repeated use of the second magnetic member.

[0067] For example, in actual processing, the cover plate 20 is inserted according to the alignment of the liquid injection hole 22 and the liquid injection hole positioning pin 13. After the preliminary positioning is completed, the second magnetic member on the cover plate 20 is removed. After the cover plate 20 is aligned with the installation of the imitation battery cell 10, the second magnetic member is placed on the cover plate 20, so that the second magnetic member is magnetically attracted to the first magnetic member 122, and the position of the cover plate 20 is stabilized.

[0068] It can be understood that the first magnetic member 122 and the second magnetic member can be but are not limited to magnets with opposite magnetic properties. Of course, in some other embodiments, one of the first magnetic member 122 and the second magnetic member can be a ferromagnetic member, and the other can be a magnet.

[0069] In some embodiments, as shown in Figure 3 The second positioning part 12 further includes a second positioning pin 121. One end of the second positioning pin 121 is detachably installed on the installation surface A1, and the other end of the second positioning pin 121 is installed with the first magnetic member 122.

[0070] The second positioning pin 121 and the first magnetic member 122 can be connected by any detachable connection mode, for example but not limited to threaded connection, which is conducive to recycling the first magnetic member 122 and reusing the first magnetic member 122.

[0071] In this embodiment, the second positioning pin 121 is used to support and fix the first magnetic member 122 on one hand, and is conducive to the positioning of the cover plate 20 on the other hand. The second positioning pin 121 is detachably connected with the installation surface A1, which is conducive to the repeated use of the imitation battery cell 10.

[0072] In some embodiments, the second positioning pin 121 includes at least two second positioning pins 121. The at least two second positioning pins 121 are spaced apart along a first direction in a region close to the center of the installation surface A1, and each second positioning pin 121 is installed with a corresponding first magnetic member 122. The first direction is the direction of the long side of the imitation battery cell 10 (for example, the X direction in Figure 3

[0073] ​In the embodiment, the number and distribution position of the second positioning pins 121 are beneficial to stabilize and fix the position of the cover plate 20.

[0074] In some embodiments, as shown in Figure 4 The first magnetic members 122 and the second magnetic members are one-to-one corresponding and each are provided with a plurality of magnetic members. The second magnetic members include a connecting portion 212 and a magnetic attraction portion 211 corresponding to each first magnetic member 122. Each magnetic attraction portion 211 is connected with the connecting portion 212.

[0075] The magnetic attraction portion and the connecting portion 212 can be connected by any connection mode, for example, but not limited to, welding, screwing, etc.

[0076] In the embodiment, the magnetic attraction portions 211 of the second magnetic members are connected with the connecting portion 212, so that the plurality of magnetic attraction portions 211 are integrally arranged, which is convenient for operation.

[0077] In summary, the light leakage detection tool of the embodiment of the application has the following advantages. On the one hand, the dummy battery 10 is used instead of a real battery, which is beneficial to avoid the problem of frequent disassembly in the debugging process and damage to the battery. The dummy battery 10 and the cover plate 20 are detachably connected, which is convenient for disassembly and installation of the cover plate 20 in the debugging process, and is beneficial to improve the production and processing efficiency and the production and processing quality. On the other hand, the state change of the laser light-adjustable photo paper 30 can reliably detect the light leakage problem at the contact position of the cover plate 20 and the opening 41. The detachable connection of the dummy battery 10 and the cover plate 20 is beneficial to the repeated use of the dummy battery 10, which can reliably reduce the production cost and eliminate the potential quality and safety hazards of the light leakage battery.

[0078] In addition, the magnetic attraction of the first magnetic members 122 and the second magnetic members is beneficial to reliably realize the positioning and fixing of the cover plate 20. The setting mode of the first magnetic members and the second magnetic members is beneficial to the repeated use of the dummy battery 10, the first magnetic members 122 and the second magnetic members.

[0079] Secondly, the utility model provides a battery processing equipment, including laser equipment and the light leakage detection tool of first aspect's, laser equipment is used for laser processing cover plate and the contact of opening. It can be understood that the battery processing equipment of the embodiment of the application has all the characteristics and advantages of the above-mentioned light leakage detection tool, which will not be repeated here. In summary, the battery processing equipment of the embodiment of the application is beneficial to improve the production and processing efficiency and improve the yield.

[0080] The light leakage detection tool of the application will be described below through a specific embodiment.

[0081] As shown in Figures 1-5As shown, the replica battery cell 10 made of steel has a mounting surface A1, and a liquid injection hole positioning pin 13 is arranged at a position deviated to one side of the mounting surface A1. Figure 3 Two first metal pins (first positioning part 11) are arranged at intervals along the edge of the mounting surface A1 in the first direction (e.g. X direction in the figure), one end of each first metal pin is threadedly connected to the mounting surface A1, two second metal pins are arranged at intervals near the central region of the mounting surface A1, one end of each second metal pin is threadedly connected to the mounting surface A1, and a strong magnet (first magnetic part 122) is threadedly connected to the other end of each second metal pin, the second metal pins and the strong magnet correspond to a second positioning part 12.

[0082] The laser light adjusting photo paper 30 has two positioning holes (first matching part 31) arranged at intervals near the edge, the first metal pins and the positioning holes are matched, the laser light adjusting photo paper 30 is fixed and limited on the mounting surface A1, the laser light adjusting photo paper 30 covers the mounting surface A1, and the edge of the laser light adjusting photo paper 30 is flush with the edge of the mounting surface A1.

[0083] The cover plate 20 has a liquid injection hole 22, the liquid injection hole 22 is aligned and matched with the liquid injection hole positioning pin 13 to complete the preliminary positioning of the cover plate 20, and the cover plate 20 is adjusted to be aligned with the replica battery cell 10, two magnets are connected to form a whole (second magnetic part), the two magnets are placed at positions corresponding to the first magnetic part 122, and are magnetically attracted and matched, so that the position of the cover plate 20 is fixed on the mounting surface A1.

[0084] The installed bare battery cell is placed in the shell 40 as a whole, the cover plate 20 is arranged at the opening 41 of the shell 40, and the edge of the laser light adjusting photo paper 30 is recessed relative to the inner edge of the opening 41 of the shell 40, laser equipment debugging is performed, after the debugging is completed, the cover plate 20 is disassembled, and the laser light adjusting photo paper 30 is observed, if part of the area of the laser light adjusting photo paper 30 changes from black (first state) to white (second state), it is determined that there is light leakage at the contact position of the cover plate 20 and the opening 41, and further analysis and debugging are required. The brightness of the white color can represent the degree of light leakage, the brighter the white color, the more serious the light leakage, if there is light leakage at the contact position of the cover plate 20 and the opening 41, a white annular edge may be generated at the edge of the laser light adjusting photo paper 30.

[0085] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the utility model range involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or equivalent features without departing from the utility model concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form a technical solution.

Claims

1. A light leakage detection tool, characterized in that, The application relates to a light leakage detection tool for a bare battery cell. The tool comprises: a bare battery cell, which comprises a dummy battery cell and a cover plate, the dummy battery cell has a mounting surface, and the cover plate is detachably mounted on the mounting surface; laser light adjusting paper, which covers the mounting surface and is located between the cover plate and the mounting surface, the edge of the laser light adjusting paper is flush with the edge of the mounting surface at least, and the laser light adjusting paper comprises a first state and a second state; a shell, which has an opening, the dummy battery cell is placed inside the shell, and the cover plate covers the opening; 2. The light leakage detection tool of claim 1, wherein, laser processing is performed on the contact between the cover plate and the opening, and the laser light adjusting paper changes from the first state to the second state, thereby determining the light leakage of the contact between the cover plate and the opening.

3. The light leakage detection tool of claim 1, wherein, In the direction parallel to the mounting surface, the edge of the laser light adjusting paper is recessed relative to the inner edge of the opening.

4. The light leakage detection tool of claim 3, wherein, The mounting surface is provided with a first positioning part which is detachably connected, the laser light adjusting paper is provided with a first matching part, and the first positioning part and the first matching part are detachably matched to fix the position of the laser light adjusting paper on the mounting surface.

5. The light leakage detection tool of claim 1, wherein, The first positioning part comprises at least two first positioning pins which are distributed in the region close to the edge of the mounting surface in a first direction, the first matching part comprises at least two positioning holes which are formed in the laser light adjusting paper, and the positions of the positioning holes correspond to the positions of the positioning pins; wherein the first direction is the direction of the long side of the dummy battery cell.

6. The light leakage detection tool of claim 5, wherein, The mounting surface is provided with a second positioning part which is detachably connected, the cover plate is provided with a second matching part, when the cover plate covers the mounting surface, the second positioning part and the second matching part are matched to fix the position of the cover plate on the mounting surface. The second positioning part comprises a first magnetic part, the second matching part comprises a second magnetic part, and the first magnetic part and the second magnetic part are opposite in magnetism.

7. The light leakage detection tool of claim 6, wherein, The position of the second magnetic part on the cover plate is movable, the first magnetic part and the second magnetic part are magnetically attracted and matched by adjusting the position of the second magnetic part, so as to adjust the position of the cover plate on the mounting surface.

8. The light leakage detection tool of claim 7, wherein, The second positioning part further comprises a second positioning pin, one end of the second positioning pin is detachably mounted on the mounting surface, and the other end of the second positioning pin is provided with the first magnetic part.

9. The light leakage detection tool of claim 6, wherein, The second positioning pin comprises at least two second positioning pins which are distributed in the region close to the center of the mounting surface along a first direction, and each of the second positioning pins is provided with a first magnetic part; wherein the first direction is the direction of the long side of the dummy battery cell.

10. A battery processing apparatus characterized by The first magnetic part and the second magnetic part are one-to-one corresponding and are both provided with a plurality of magnetic parts, the second magnetic part comprises a connecting part and a magnetic attraction part corresponding to each first magnetic part, and each magnetic attraction part is connected with the connecting part. The tool further comprises a laser device which is used for laser processing on the contact between the cover plate and the opening.

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