Method for repairing cover plate of laser seal welding shell

Abstract

The invention provides a method for repairing a cover plate of a laser seal welding shell, which comprises the following steps of: acquiring parameter information of the cover plate, and determining a feeding path and stress release groove information on the cover plate according to the parameter information; an anti-extrusion groove is formed in the top face of the cover plate, a buffer piece is placed in the anti-extrusion groove, and the anti-extrusion groove is close to the middle of the cover plate relative to the feeding path; a stress releasing groove is formed in the cover plate, and a cover opening groove is machined in the top face of the cover plate along the feeding path; the cover plate is dismounted through the cover opening groove; the shell is placed under a microscope to remove burrs, the area to be sealed and welded is spot-coated with a protective adhesive film, and a new cover plate is used for laser sealing and welding again. The technical scheme at least has the beneficial effects that the stress release groove and the anti-extrusion groove are formed before the cover is opened, so that damage to the cover plate and the shell can be effectively avoided; and the cover plate or other articles are prevented from falling into the shell, so that the components are effectively protected, and the success rate of repair is improved.

Description

Technical Field

[0001] The present application relates to the technical field of laser welding of electronic products, and in particular to a method for repairing a cover plate of a laser welding shell. Background Art

[0002] At present, there are more and more components containing bare chips. In order to ensure the reliability of internal chips and components during long-term service, higher requirements are required for the airtight packaging of the outer shell. Laser welding uses the principle of laser energy radiation to transfer energy to the overlap between the cover plate and the tube shell through the laser, so that a molten pool is formed at the overlap, and a weld is formed after cooling. Since the trajectory of laser sealing is guided by the programmable program of the laser sealing machine, various complex shape shells can be packaged. And because of its energy transmission characteristics, it can be used for welding various metal materials, including Kovar alloy, aluminum silicon alloy, aluminum alloy, etc.; due to its molten sealing characteristics, it can achieve high airtight packaging, meet the use environment of various high airtight products, making it one of the main packaging methods.

[0003] For general devices, a series of experiments will continue after the packaging is completed. During the experiment, the electronic components inside the device may be damaged or other factors may occur, requiring component replacement;

[0004] For example, the patent application document with publication number (CN118218753A) discloses a laser sealing and repair method. Although the comparative document mentions the steps of gradually cutting and opening the cover, it uses a purely mechanical dismantling and repair method. When opening the cover, there is no corresponding pre-processing link. Directly opening the cover leads to easy errors in the process, damage to components and the housing, and ultimately makes it difficult to meet the airtightness requirements when sealing again. Summary of the invention

[0005] In view of the shortcomings of the prior art described above, an object of the present invention is to provide a method for repairing the cover of a laser-sealed housing, which is used to solve the problem in the prior art that directly opening the cover leads to easy errors in the process, damages components and the housing, and ultimately makes it difficult to meet the airtightness requirements during re-sealing.

[0006] To achieve the above-mentioned purpose and other related purposes, the present invention provides a cover plate repair method of a laser-sealed housing, comprising:

[0007] Acquire parameter information of the cover plate, and determine the tool path and stress relief groove information on the cover plate according to the parameter information;

[0008] An anti-squeezing groove is provided on the top surface of the cover plate, and a buffer is placed in the anti-squeezing groove, wherein the anti-squeezing groove is close to the middle of the cover plate relative to the tool path;

[0009] A stress relief groove is formed on the cover plate, and the cover groove is processed on the top surface of the cover plate along the tool path;

[0010] The cover plate is removed through the cover opening slot;

[0011] Place the shell under a microscope to remove burrs, apply a spot coat of protective film to the area to be sealed, and then laser seal again with a new cover.

[0012] Optionally, the side wall of the cover opening groove close to the middle of the cover plate has an inclined force-bearing surface, and the direction from the bottom of the cover opening groove toward the opening of the cover opening groove is a first direction, and the inclined force-bearing surface is inclined toward the adjacent edge of the cover plate in the first direction.

[0013] Optionally, processing the cover opening groove includes:

[0014] The first step is to process the first process groove along the tool path.

[0015] The second step is to form a second process groove integrated with the first process groove on the basis of the first process groove, wherein the depth of the second process groove is greater than that of the first process groove, and the side surface of the second process groove close to the middle part of the cover plate forms the inclined force-bearing surface;

[0016] The second process groove has a lateral direction which is respectively perpendicular to the tool path and the first direction, the bottom of the second process groove has a lowest point in the middle of the lateral direction, and the bottom of the second process groove gradually rises from the lowest point to both sides of the second process groove;

[0017] The third step is to perform the lateral material removal process from the lowest point toward the outside of the cover plate until the side wall of the second process groove close to the shell is removed.

[0018] Optionally, the second process groove has a first inclined bottom surface and a second inclined bottom surface, the first inclined surface is inclined from the lowest point to the edge of the cover plate, and the second inclined bottom surface is inclined toward the middle of the cover plate. In the third process, material is removed from the connection between the first inclined bottom surface and the second inclined bottom surface toward the outside of the cover until the first inclined bottom surface is processed into a horizontal surface.

[0019] Optionally, an inclined welding surface is provided on the inner side surface where the shell and the cover plate are connected, and the welding surface is gradually inclined toward the outside of the shell along a direction from bottom to top.

[0020] Optionally, before machining the cover opening groove on the top surface of the cover plate along the tool path, the method further comprises:

[0021] The tool is moved along the top of the cover plate to detect whether the deviation between the tool path and the weld meets the first preset deviation threshold. If the deviation between the tool path and the weld exceeds the first preset deviation threshold, the processing is stopped, the parameter information of the cover plate is acquired again, and the tool path is re-determined. If the deviation between the tool path and the weld meets the first preset deviation threshold, the detection groove is processed along the tool path.

[0022] Optionally, it is detected whether the deviation between the processing detection groove formed by shallow knife cutting and the weld meets the second preset deviation threshold. If the deviation between the processing detection groove and the weld meets the second preset deviation threshold, a cover groove is processed on the top surface of the cover plate along the tool path. If the deviation between the processing detection groove and the seam gap exceeds the second preset deviation threshold, the processing is stopped, the parameter information of the cover plate is re-acquired, and the tool path is re-determined.

[0023] Optionally, a cover opening piece is used to remove the cover plate through the cover opening groove, and the cover opening piece includes a hand-holding portion and a pulling portion, the hand-holding portion and the pulling portion are fixedly connected along the length direction of the cover opening piece, and the pulling portion is provided with a cover opening rake tooth for abutting an inclined force surface at one end away from the hand-holding portion, and when the cover opening piece is extended into the cover opening groove, the cover opening rake tooth is bent and protruded toward the middle of the cover plate.

[0024] Optionally, the pulling portion is provided with a connection hole, and a grounding wire for removing static electricity is passed through the connection hole.

[0025] Optionally, the pulling portion is provided with a mounting hole, the pulling portion is detachably connected to a gasket via the mounting hole, and the gasket gradually becomes thinner in a direction from the hand-held portion to the pulling portion.

[0026] As described above, the beneficial effects brought by the technical solution of the present invention include at least: by providing an anti-extrusion groove in the inner circle of the tool path, the transmission of cutting force and extrusion force is blocked, the surrounding weak areas are effectively protected, and a buffer is provided in the anti-extrusion groove to suppress the adverse effects caused by milling force and vibration;

[0027] Stress relief grooves are set at the corners to significantly reduce the stress peak. At the same time, the concave arc speed reduction method is used to suppress the sudden increase of milling force at the rounded corners, which can avoid the problem of a sharp drop in milling reliability at the rounded corners.

[0028] Providing stress relief grooves and anti-extrusion grooves before opening the cover can effectively avoid damage to the cover and the shell, and prevent the cover or other objects from falling into the shell, thereby effectively protecting the components and improving the success rate of rework. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1A schematic diagram showing a flow chart of a cover plate repair method according to an exemplary embodiment of the present invention;

[0030] Figure 2 Shown is a schematic diagram of a process for processing a cover opening groove according to an exemplary embodiment of the present invention;

[0031] Figure 3 Shown is a schematic structural diagram of a housing and a cover plate of an exemplary embodiment of the present invention;

[0032] Figure 4 An exemplary embodiment of the present invention is shown Figure 3 -A is an enlarged schematic diagram;

[0033] Figure 5 A schematic cross-sectional view of a housing and a cover plate showing an exemplary embodiment of the present invention;

[0034] Figure 6 An exemplary embodiment of the present invention is shown Figure 5 -A magnified schematic diagram of the first process slot state of machining at B;

[0035] Figure 7 An exemplary embodiment of the present invention is shown Figure 5 -A magnified schematic diagram of the state of the second process slot at B;

[0036] Figure 8 An exemplary embodiment of the present invention is shown Figure 5 -A magnified schematic diagram of the state after the cover opening groove processing at B is completed;

[0037] Fig. 9 An exemplary embodiment of the present invention is shown Figure 5 -A magnified schematic diagram of the processed welding surface state at B;

[0038] Fig.10 A schematic diagram showing a state where a cover opening member according to an exemplary embodiment of the present invention extends into a cover opening slot;

[0039] Fig.11 Shown is a schematic structural diagram of a cover opening member of an exemplary embodiment of the present invention;

[0040] Fig.12 A rear view of an opening member according to an exemplary embodiment of the present invention is shown.

[0041] Part Number Description

[0042] 1. Cover plate; 101. Welding surface; 2. Anti-extrusion groove; 3. Buffer; 4. Stress release groove; 5. Shell; 6. Open cover groove; 601. Stress surface; 602. First process groove; 603. Second process groove; 7. Open cover piece; 71. Hand-held part; 72. Pulling part; 73. Open cover rake teeth; 74. Connecting hole; 75. Mounting hole; 76. Gasket; 77. Unloading hole; 78. Fixing hole. DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0044] It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0045] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present disclosure. However, it is obvious to those skilled in the art that the embodiments of the present disclosure can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present disclosure difficult to understand.

[0046] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 and Fig.10 The present invention provides a method for repairing a cover plate of a laser-sealed housing, comprising:

[0047] Step 110, obtaining parameter information of the cover plate 1 on the housing, and determining the tool path and information of the stress release groove 4 on the cover plate 1 according to the parameter information;

[0048] Step 120, opening an anti-squeezing groove 2 on the top surface of the cover plate 1, and placing a buffer 3 in the anti-squeezing groove 2, wherein the anti-squeezing groove 2 is close to the middle of the cover plate 1 relative to the tool path;

[0049] Step 130, opening a stress release groove 4 on the cover plate 1, and machining a cover groove 6 on the top surface of the cover plate 1 along the tool path;

[0050] Step 140, removing the cover plate 1 through the cover opening groove 6;

[0051] Step 150, placing the housing 5 under a microscope to remove burrs;

[0052] Step 160, applying a protective film to the area to be sealed;

[0053] Step 170, laser sealing again with a new cover plate 1.

[0054] In one embodiment of the present application, specifically, the cover plate 1 rework method includes the following specific steps: the programmer imports the three-dimensional model corresponding to the laser sealing shell into the programming software, straightens the three-dimensional model and considers the operability and accuracy of clamping and edge finding to establish a good program coordinate system, and uses the sealing trajectory as the cutting path to compile a processing program. The program is prohibited from spraying coolant throughout the program. The compiled program is post-processed into code and transmitted to the program memory of the machine tool, and the coordinate system and the program number corresponding to the code are informed to the operator, and the parameter information of the cover plate 1 is obtained. The parameter information includes the four corners and five point information in the middle of the shell 5. The Z-direction (height direction) error of the five points is controlled within 0.03mm. If the error of 0.03mm cannot be met, a thin sheet is used for padding (or adjusted by other auxiliary support settings with water surface), and the coordinates of the five points in the X-direction, Y-direction and Z-direction are respectively input into the machine tool to establish a coordinate system, thereby determining the tool path and the stress release groove 4 information;

[0055] Along the weld between the shell 5 and the cover plate 1, deviate toward the middle of the cover plate 1, use an end mill to mill out a trench with a rectangular cross section, and then use a T-shaped ball end mill to expand the lower half of the rectangular cross section into a circular arc cross section to form an anti-extrusion groove 2, so as to prevent the cover plate 1 from squeezing the shell 5 during the opening process, cut off the adverse effects of the milling force, vibration force, and warping force (the warping force caused by the tool on the diagonal direction of the cover plate during milling) on ​​the weak part of the cover plate, and insert a buffer 3 into the anti-extrusion groove 2. In this embodiment, the buffer 3 is rubber, and when the anti-extrusion groove 2 is opened, compressed air is automatically sprayed to blow away the chips and heat;

[0056] A stress release groove 4 is provided at the corner of the cover plate 1, and its structure is as follows: the outer contour is a small circle, and the depth increases along the curvature. By pre-milling the stress groove, the stress of the fillet part is released in advance, and the stress peak value of each fillet position where the stress is originally concentrated will be greatly reduced;

[0057] The cover opening slot 6 is opened along the tool path. A rough machining method with high speed, fast feed and medium cutting depth is adopted during milling, and a semi-finishing allowance is reserved on the side of the shell 5. The cover plate 1 is cut to about two-thirds of its thickness. The chips and heat are blown away by automatically spraying compressed air. Then, the end mill is changed to a semi-finishing method with high speed, medium feed and small cutting depth. Compressed air is not sprayed during the cutting process. The cover plate 1 is cut to about 95% of its thickness and the cover plate 1 is pulled out through the cover opening slot 6.

[0058] Finally, place the shell 5 under a microscope to remove burrs, place the opened shell 5 on an anti-static workbench, and remove burrs under a microscope. After completion, immediately perform glue sealing on the upper surface and side areas to be sealed of the shell 5, which can prevent oxidation of the sealed surface and avoid bumps and contamination during subsequent circuit repairs. The protective film can be cured at room temperature and easily torn off. The opened shell 5 is packed with capacitor paper into an anti-static packaging bag, which is composed of multiple layers of materials and has the dual functions of being self-static and shielding external static electricity. After delivery to the user, it is repaired and debugged, and this process may take several days to complete. After qualified repair and debugging, it enters the laser sealing process. At this time, the protective film is torn off, and the new cover 1 is laser sealed again.

[0059] The side wall of the cover opening groove 6 close to the middle of the cover plate 1 has an inclined force-bearing surface 601, and the direction from the bottom of the cover opening groove 6 toward the opening of the cover opening groove 6 is the first direction (from bottom to top), and the inclined force-bearing surface 601 is inclined toward the adjacent edge of the cover plate 1 in the first direction.

[0060] In one embodiment of the present application, specifically, a plurality of fixing holes are provided on the outer shell, and the shell is fixed by screws passing through the fixing holes before the cover is opened.

[0061] In one embodiment of the present application, specifically, in the process of opening the cover opening groove 6, an inclined force-bearing surface 601 is provided on the side wall of the cover opening near the middle of the cover plate 1, and the force-bearing surface 601 is gradually inclined from bottom to top toward the direction of the shell 5, so that when the cover opening groove 6 is opened, the cover opening member 7 abuts against the force-bearing surface 601, thereby preventing the cover opening member 7 from extending into the cover opening groove 6 of the cover plate 1 and causing sliding between the cover opening member 7 and the cover plate 1 when the cover is opened with force, thereby causing damage to the shell 5 or the cover plate 1.

[0062] See also Figure 2 , processing the cover opening groove 6 includes:

[0063] Step 210, see Figure 5 and Figure 6 , the first step is to process the first process groove 602 along the tool path,

[0064] Step 220, see Figure 7 In the second step, a second process groove 603 is formed on the basis of the first process groove 602 to integrate the first process groove 602, wherein the depth of the second process groove 603 is greater than that of the first process groove 602.

[0065] Step 230, see Figure 7 , the side of the second process groove 603 close to the middle of the cover plate 1 forms the inclined force-bearing surface 601 (or the inclined force-bearing surface 601 is first opened, and then the second process groove 603 is opened, which is not limited in this embodiment);

[0066] The second process groove 603 has a lateral direction which is respectively perpendicular to the tool path and the first direction, the bottom of the second process groove 603 has a lowest point in the middle of the lateral direction, and the bottom of the second process groove 603 gradually rises from the lowest point to both sides of the second process groove 603;

[0067] Step 240, see Figure 8 The third step is to perform the lateral material removal process from the lowest point toward the outside of the cover plate 1 until the side wall of the second process groove 603 close to the shell 5 is removed.

[0068] In one embodiment of the present application, specifically, processing the cover opening groove 6 includes three steps, wherein the first step is to cut and process the first process groove 602 along the weld (tool path), and the first process groove 602 is processed to two-thirds of the thickness of the cover plate 1, and the second step is to process the second process groove 603 on the basis of the first process groove 602, and the second process groove 603 is processed on the bottom surface of the first process groove 602. In this embodiment, the second process groove 603 is a V-shaped groove, wherein the cross-section of the second process groove 603 is an obtuse angle, the tool does not touch the shell 5 throughout the process, and the depth of the lowest point of the second process groove 603 is 95% of the thickness of the cover plate 1, and the third step is to horizontally take material along the bottom of the second process groove 603 in the direction of the shell 5 until the side walls of the second process groove 603 and the first process groove 602 close to the shell 5 are removed.

[0069] The second process groove 603 has a first inclined bottom surface and a second inclined bottom surface, the first inclined surface is inclined from the lowest point to the edge of the cover plate 1, and the second inclined bottom surface is inclined toward the middle of the cover plate 1. In the third process, the material is removed from the connection between the first inclined bottom surface and the second inclined bottom surface toward the outside of the cover until the first inclined bottom surface is processed into a horizontal surface, and the second inclined bottom surface is still an inclined surface, providing sufficient support surface for the cover opening member 7.

[0070] In one embodiment of the present application, specifically, before machining the cover opening groove 6 on the top surface of the cover plate 1 along the tool path, the method further includes:

[0071] An idle cut is made along the top of the cover plate 1 to detect whether the deviation between the tool path and the weld meets a first preset deviation threshold. If the deviation between the tool path and the weld exceeds the first preset deviation threshold, processing is stopped, parameter information of the cover plate 1 is acquired again, and the tool path is re-determined until the deviation is smaller than the first preset deviation threshold. If the deviation between the tool path and the weld meets the first preset deviation threshold, the detection groove is processed along the tool path. The error-proof method of idle cut and trial cutting can effectively avoid various problems caused by inconsideration and inadequate communication of programmers and operators under time constraints.

[0072] Detect whether the deviation between the processing detection groove formed by shallow knife cutting and the weld meets the second preset deviation threshold. If the deviation between the processing detection groove and the weld meets the second preset deviation threshold, process the cover groove 6 along the tool path on the top surface of the cover plate 1. If the deviation between the processing detection groove and the joint gap exceeds the second preset deviation threshold, stop the processing, re-acquire the parameter information of the cover plate 1 and redetermine the tool path until the deviation between the tool path and the weld is less than the second preset deviation threshold.

[0073] See also Fig. 9 In one embodiment of the present application, specifically, an inclined welding surface 101 is provided on the inner side surface where the shell 5 and the cover plate 1 are connected, and the welding surface 101 is gradually inclined toward the outside of the shell 5 along the direction from bottom to top. During welding, since the welding surface 101 is gradually inclined toward the outside of the shell 5 along the direction from bottom to top, the liquid in the molten pool automatically moves toward the small gap due to capillary action, preferentially fills the small gap at the bottom, and then gradually advances toward the large gap at the top. While the solder moves upward, it also drives the bubbles upward. The structure of the curved cross-section with a narrow bottom and a wide top makes the curvature of the small end of the bubble larger, and the additional pressure is also greater, which is conducive to obtaining a larger initial acceleration. According to the principle of the fastest curve, the motion path length is equivalent, and the curve with a faster initial speed will take a shorter time, which is conducive to the discharge of bubbles in a shorter time. At the same time, the upper opening is slightly enlarged to delay the solidification of the molten pool surface and gain more time for the bubble discharge.

[0074] In one embodiment of the present application, specifically, when opening the cover slot 6 and cutting the edge of the cover plate 1, the first speed is used to cut along the direction of the currently cut edge. When cutting to the corner, the cutting speed is reduced until the turn is completed. This can make the machine tool lead screw reversing more stable and ensure the reliability of the inner fillet milling.

[0075] See also Fig.11 and Fig.12In one embodiment of the present application, specifically, a cover opening piece 7 is used to remove the cover plate 1 through the cover opening groove 6. The cover opening piece 7 is a long strip structure. The cover opening piece 7 includes a hand-held portion 71 and a pulling portion 72. During use, the hand-held portion 71 is located above the pulling portion 72. The hand-held portion 71 and the pulling portion 72 are fixedly connected along the length direction of the cover opening piece 7. An end of the pulling portion 72 away from the hand-held portion 71 is provided with a cover opening rake tooth 73 for abutting against the inclined force surface 601, and when the cover opening piece 7 is extended into the cover opening groove 6, the cover opening rake tooth 73 is bent and protruded toward the middle part of the cover plate 1, so that the cover opening rake tooth 73 is convenient for biting into the cover opening groove 6 of the cover plate 1 so that it has sufficient cover opening force.

[0076] In one embodiment of the present application, specifically, three cover opening rake teeth 73 are provided, wherein the cover opening rake teeth 73 are arranged in sequence along the width direction of the pulling portion 72, and the curvature of the middle cover opening rake tooth 73 toward the middle of the cover plate 1 is greater than the inclination of the cover opening rake teeth 73 at both ends, so that the middle rake teeth can bite into the reverse slope of the cover plate first, and then the rake teeth on both sides can bite into it, which can avoid uneven manual force during the cover opening process and cause the puller to flip over.

[0077] In one embodiment of the present application, specifically, the widths of the upper and lower ends of the hand-holding portion 71 are greater than the width of the middle portion, and the widths of the upper and lower ends of the hand-holding portion 71 gradually decrease toward the middle portion, which is convenient for holding.

[0078] In one embodiment of the present application, specifically, the lifting portion 72 is provided with a connecting hole 74, and a grounding wire for removing static electricity is passed through the connecting hole 74, which can effectively protect the electrostatic sensitive device.

[0079] In one embodiment of the present application, specifically, the pulling portion 72 is provided with a mounting hole 75, and the pulling portion 72 is detachably connected to a gasket 76 through the mounting hole 75. The gasket 76 gradually becomes thinner in the direction from the hand-held portion 71 to the pulling portion 72. The gasket 76 is made of soft metal material, which can effectively protect the sealing edge of the shell 5 from being crushed, and has a wedging effect during the opening process.

[0080] In one embodiment of the present application, specifically, a corrugated anti-skid pattern is provided on the surface of the gasket 76 close to the shell 5, so that the back surface will not slip during the opening process and can provide sufficient bearing capacity.

[0081] In one embodiment of the present application, specifically, the gasket 76 is wedge-shaped, and in use, the thickness of the gasket 76 gradually decreases from top to bottom.

[0082] In one embodiment of the present application, specifically, a relief hole 77 is provided in the lifting portion 72, which absorbs the lifting force and produces a certain elastic deformation during the lifting and opening process, thereby preventing the rake teeth from being impacted.

[0083] In one embodiment of the present application, specifically, the hand-held portion 71 is provided with a fixing hole 78 for placing the cover opening member 7 .

[0084] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for repairing a cover plate of a laser-sealed housing, characterized in that: include: Acquire parameter information of the cover plate, and determine the tool path and stress relief groove information on the cover plate according to the parameter information; An anti-squeezing groove is provided on the top surface of the cover plate, and a buffer is placed in the anti-squeezing groove, wherein the anti-squeezing groove is close to the middle of the cover plate relative to the tool path; A stress relief groove is formed on the cover plate, and the cover groove is processed on the top surface of the cover plate along the tool path; The cover plate is removed through the cover opening slot; Place the shell under a microscope to remove burrs, apply a spot coat of protective film to the area to be sealed, and then laser seal again with a new cover.

2. A method for repairing a cover plate of a laser-sealed housing according to claim 1, characterized in that: The side wall of the cover opening groove near the middle of the cover plate has an inclined force-bearing surface, and the direction from the bottom of the cover opening groove toward the opening of the cover opening groove is a first direction. The inclined force-bearing surface is inclined toward the adjacent edge of the cover plate in the first direction.

3. A method for repairing a cover plate of a laser-sealed housing according to claim 2, characterized in that: Processing the cover opening groove includes: The first step is to process the first process groove along the tool path. The second step is to form a second process groove integrated with the first process groove on the basis of the first process groove, wherein the depth of the second process groove is greater than that of the first process groove, and the side surface of the second process groove close to the middle part of the cover plate forms the inclined force-bearing surface; The second process groove has a lateral direction which is respectively perpendicular to the tool path and the first direction, the bottom of the second process groove has a lowest point in the middle of the lateral direction, and the bottom of the second process groove gradually rises from the lowest point to both sides of the second process groove; The third step is to perform the lateral material removal process from the lowest point toward the outside of the cover plate until the side wall of the second process groove close to the shell is removed.

4. A method for repairing a cover plate of a laser-sealed housing according to claim 3, characterized in that: The second process groove has a first inclined bottom surface and a second inclined bottom surface, the first inclined surface is inclined from the lowest point to the edge of the cover plate, and the second inclined bottom surface is inclined toward the middle of the cover plate. In the third process, material is removed from the connection between the first inclined bottom surface and the second inclined bottom surface toward the outside of the cover until the first inclined bottom surface is processed into a horizontal surface.

5. A method for repairing a cover plate of a laser-sealed housing according to any one of claims 1 to 4, characterized in that: An inclined welding surface is provided on the inner side surface where the shell and the cover plate are connected, and the welding surface is gradually inclined toward the outside of the shell along a direction from bottom to top.

6. A method for repairing a cover plate of a laser-sealed housing according to any one of claims 1 to 4, characterized in that: Before machining the cover opening groove on the top surface of the cover plate along the tool path, the method further comprises: The tool is moved along the top of the cover plate to detect whether the deviation between the tool path and the weld meets the first preset deviation threshold. If the deviation between the tool path and the weld exceeds the first preset deviation threshold, the processing is stopped, the parameter information of the cover plate is acquired again, and the tool path is re-determined. If the deviation between the tool path and the weld meets the first preset deviation threshold, the detection groove is processed along the tool path.

7. A method for repairing a cover plate of a laser-sealed housing according to claim 6, characterized in that: Detect whether the deviation between the processing detection groove formed by shallow knife cutting and the weld meets the second preset deviation threshold. If the deviation between the processing detection groove and the weld meets the second preset deviation threshold, a cover groove is processed on the top surface of the cover plate along the tool path. If the deviation between the processing detection groove and the joint gap exceeds the second preset deviation threshold, stop processing, re-acquire parameter information of the cover plate and redetermine the tool path.

8. A method for repairing a cover plate of a laser-sealed housing according to any one of claims 1 to 4, characterized in that: The cover plate is removed by using a cover opening piece through the cover opening groove, the cover opening piece includes a hand holding part and a pulling part, the hand holding part and the pulling part are fixedly connected along the length direction of the cover opening piece, and the pulling part is provided with a cover opening rake tooth for abutting against an inclined force-bearing surface at one end away from the hand holding part, and when the cover opening piece is extended into the cover opening groove, the cover opening rake tooth is bent and protruded toward the middle of the cover plate.

9. A method for repairing a cover plate of a laser-sealed housing according to claim 8, characterized in that: The pulling-out portion is provided with a connecting hole, and a grounding wire for removing static electricity is passed through the connecting hole.

10. The method for repairing a cover plate of a laser-sealed housing according to claim 8, characterized in that: The pulling part is provided with a mounting hole, and the pulling part is detachably connected to the gasket through the mounting hole, and the gasket gradually becomes thinner in a direction from the hand-held part to the pulling part.

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