Welding device

Abstract

The utility model relates to a welding device which comprises an emission source and a protection assembly, the emission source can emit laser, the protection assembly comprises pre-welding protection covers, a full-welding protection cover and a first driving part, a plurality of pre-welding holes are formed in the pre-welding protection covers, and the pre-welding protection covers are arranged in the circumferential direction of the full-welding protection cover; the first driving part can drive the pre-welding protection cover to abut against the full-welding protection cover or be separated from the full-welding protection cover. When the pre-welding protective cover abuts against the full-welding protective cover, laser emitted by the emission source can penetrate through the pre-welding hole in the first direction to pre-weld the battery; when the pre-welding protective cover is separated from the full-welding protective cover, the full-welding protective cover shields the pole of the battery in the first direction, laser emitted by the emission source can conduct full welding on the part, not shielded by the full-welding protective cover, of the top of the battery, and the first direction is the height direction of the welding device. According to the welding device, the welding operation of the welding device is relatively simple, the required consumed time is relatively short, and the welding efficiency is favorably improved.

Description

Technical Field

[0001] This application relates to the field of welding technology, and more particularly to a welding apparatus. Background Technology

[0002] When laser welding the battery cover and casing together, the battery needs to be positioned first. A pre-welded protective cover is placed on top of the battery for pre-welding, and then a fully welded protective cover is placed on top for full welding. The pre-welded and fully welded protective covers are placed at two separate workstations, and the fixture needs to move back and forth to pick up and place the two covers. Therefore, the welding process is time-consuming and cumbersome. Utility Model Content

[0003] This application provides a welding apparatus to solve the problems of long time consumption and cumbersome operation when welding the cover plate and casing of a battery.

[0004] This application provides a welding apparatus for welding the cover plate and casing of a battery. The welding apparatus includes:

[0005] A laser emission source capable of emitting laser light;

[0006] The protective component includes: a pre-welded protective cover, a full-welded protective cover, and a first driving unit. The pre-welded protective cover is provided with a plurality of pre-welded holes, and the plurality of pre-welded protective covers are arranged circumferentially along the full-welded protective cover. The first driving unit is capable of driving the pre-welded protective cover to abut against or separate from the full-welded protective cover.

[0007] When the pre-welded protective cover abuts against the fully welded protective cover, the laser emitted by the emission source can pass through the pre-welded hole along the first direction to pre-weld the battery; when the pre-welded protective cover separates from the fully welded protective cover, the fully welded protective cover blocks the battery's terminal post along the first direction, and the laser emitted by the emission source can fully weld the part of the battery's top that is not blocked by the fully welded protective cover, where the first direction is the height direction of the welding device.

[0008] In one possible design, one of the pre-welded protective cover and the fully welded protective cover has a fixing part on their surfaces facing each other, and the other has a mating part, with the fixing part connected to the mating part.

[0009] In one possible design, the fixing part is a protrusion, the mating part is a groove, and the protrusion can extend into the groove.

[0010] In one possible design, there are four pre-welded protective covers arranged circumferentially along the full-welded protective cover.

[0011] In one possible design, the fully welded protective cover has a positioning groove on the side that contacts the battery, the positioning groove corresponding to the terminal post on the battery.

[0012] In one possible design, the welding device further includes: a body having a first bearing portion, a second bearing portion, and a first support portion, wherein along the first direction, the first support portion supports the second bearing portion above the first bearing portion, the first bearing portion is used to carry a battery, and the second bearing portion is provided with a clearance groove for welding the battery below the clearance groove along the first direction; the first drive portion is disposed on the second bearing portion along the circumference of the clearance groove.

[0013] In one possible design, the welding device further includes a fixing component, which includes a base plate, a clamping part, a second support part, and a second driving part. The second driving part is disposed on the base plate. Along the first direction, the second support part supports the clamping part above the second driving part. The clamping part is capable of clamping and fixing the battery, and the second driving part is capable of driving the battery to move along the first direction.

[0014] In one possible design, the clamping part has a clamping groove, and the clamping size of the clamping groove gradually decreases along the direction of the first direction toward the second driving part.

[0015] In one possible design, the first support portion is provided with a slide rail extending along a second direction, the base plate is provided with a groove, and the base plate is slidably connected to the slide rail through the groove, the second direction being the length direction of the welding device; a portion of the slide rail extends below the clearance groove.

[0016] In one possible design, the welding device further includes a third drive unit disposed on the first support portion. The third drive unit includes a drive motor and a lead screw. The drive motor is capable of driving the lead screw to rotate. The base plate is provided with a threaded hole, and the base plate is connected to the lead screw through the threaded hole, so that the third drive unit can drive the fixing component to move relative to the first support portion.

[0017] In this application, during pre-welding, the first driving unit drives the pre-welding protective cover to abut against the full-welding protective cover along a direction perpendicular to the first direction. The battery is located below the pre-welding and full-welding protective covers along the first direction. The projection of the pre-welding holes onto the top of the battery along the first direction is distributed along the circumferential edge of the top of the battery. The laser emitted by the emission source can pass through the pre-welding holes along the first direction to pre-weld the battery cover and casing. The pre-welding and full-welding protective covers protect the areas on the top of the battery that do not require pre-welding. During full-welding, the first driving unit drives the pre-welding protective cover to separate from the full-welding protective cover. The battery is located below the full-welding protective cover along the first direction. The projection of the full-welding protective cover onto the top of the battery along the first direction does not cover the circumferential edge of the top of the battery. That is, the laser emitted by the emission source can pass through the area between the pre-welding and full-welding protective covers along the first direction to fully weld the battery cover and casing.

[0018] During the welding process, the position of the full-weld protective cover does not need to be changed. The contact or separation between the pre-weld protective cover and the full-weld protective cover is driven by the first driving unit. Therefore, the welding operation is relatively simple and the time required is short, which helps to improve welding efficiency.

[0019] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the welding apparatus provided in this application in a specific embodiment;

[0021] Figure 2 for Figure 1 A schematic diagram of the protective component on the first support part, wherein the protective component is in a state where pre-welding can be performed;

[0022] Figure 3 for Figure 1 A schematic diagram of the protective component on the first support part, wherein the protective component is in a state where it can be fully soldered;

[0023] Figure 4 for Figure 3 A schematic diagram of the pre-welded protective cover in the middle;

[0024] Figure 5 for Figure 3 Another structural schematic diagram of the fully welded protective cover;

[0025] Figure 6 for Figure 1 A schematic diagram of the welding device in another state;

[0026] Figure 7 for Figure 1 A schematic diagram of the organism's structure;

[0027] Figure 8 for Figure 1 A schematic diagram of the fixed components and battery structure in the diagram;

[0028] Figure 9 for Figure 1 A schematic diagram of the fixed components in the diagram.

[0029] Figure label:

[0030] 1-Protection components;

[0031] 11-Pre-welded protective cover;

[0032] 111 - Pre-welded hole;

[0033] 112-Bump;

[0034] 12-Fully welded protective cover;

[0035] 121 - Positioning groove;

[0036] 122-groove;

[0037] 13-First drive unit;

[0038] 2-Body;

[0039] 21-First load-bearing part;

[0040] 211-Slide rail;

[0041] 22-Second bearing section;

[0042] 221-Avoidance groove;

[0043] 23-First Support Section;

[0044] 24 - Third Drive Unit;

[0045] 241 - Drive motor;

[0046] 242-Lead Screw;

[0047] 3-Fixed components;

[0048] 31-Base plate;

[0049] 311-Slide groove;

[0050] 312 - Threaded hole;

[0051] 32-Clamping part;

[0052] 321-Clamping groove;

[0053] 33-Second support section;

[0054] 34-Second drive unit;

[0055] 4-Battery;

[0056] 41-Pole column.

[0057] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0058] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0059] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0060] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0061] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0062] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0063] This application provides a welding apparatus for welding the cover plate and casing of a battery 4. When welding the cover plate and casing of the battery 4, pre-welding is required before full welding. For ease of description, the height direction of the welding apparatus is defined as the first direction X, and the length direction of the welding apparatus is defined as the second direction Y.

[0064] like Figures 1-3As shown, the welding device includes: an emission source (not shown in the figure) and a protection component 1. The emission source can emit laser light. The protection component 1 includes: a pre-welding protection cover 11, a full-welding protection cover 12, and a first driving unit 13. The pre-welding protection cover 11 is provided with a plurality of pre-welding holes 111. The plurality of pre-welding protection covers 11 are arranged circumferentially along the full-welding protection cover 12. The first driving unit 13 can drive the pre-welding protection cover 11 to abut against or separate from the full-welding protection cover 12. When the pre-welding protection cover 11 abuts against the full-welding protection cover 12, the laser emitted by the emission source can pass through the pre-welding holes 111 along the first direction X to pre-weld the battery 4. When the pre-welding protection cover 11 separates from the full-welding protection cover 12, the full-welding protection cover 12 blocks the terminal post 41 of the battery 4 along the first direction X. The laser emitted by the emission source can fully weld the part of the top of the battery 4 that is not blocked by the full-welding protection cover 12.

[0065] During pre-welding, the first driving unit 13 drives the pre-welding protective cover 11 to abut against the full-welding protective cover 12 along a direction perpendicular to the first direction X. The battery 4 is located below the pre-welding protective cover 11 and the full-welding protective cover 12 along the first direction X. The projection of the pre-welding holes 111 onto the top of the battery 4 along the first direction X is distributed along the circumferential edge of the top of the battery 4. The laser emitted by the emission source can pass through the pre-welding holes 111 along the first direction X to pre-weld the cover plate and shell of the battery 4. The pre-welding protective cover 11 and the full-welding protective cover 12 protect the area on the top of the battery 4 that does not need to be pre-welded. During full-welding, the first driving unit 13 drives the pre-welding protective cover 11 to separate from the full-welding protective cover 12. The battery 4 is located below the full-welding protective cover 12 along the first direction X. The projection of the full-welding protective cover 12 onto the top of the battery 4 along the first direction X does not cover the circumferential edge of the top of the battery 4. That is, the laser emitted by the emission source can pass through the area between the pre-welding protective cover 11 and the full-welding protective cover 12 along the first direction X to fully weld the cover plate and shell of the battery 4.

[0066] During the welding process, the position of the full-weld protective cover 12 does not need to be changed. The contact or separation between the pre-weld protective cover 11 and the full-weld protective cover 12 is driven by the first driving part 13. Therefore, the welding operation is relatively simple and the time required is short, which is conducive to improving welding efficiency.

[0067] Optionally, the first drive unit 13 is a motor, and the pre-welded protective cover 11 is always fixedly connected to the output shaft of the motor.

[0068] Furthermore, such as Figure 3 As shown, one of the pre-welded protective cover 11 and the full-welded protective cover 12 has a fixing part on its surface facing each other, and the other has a mating part. The fixing part and the mating part are connected so that the pre-welded protective cover 11 can support and fix the full-welded protective cover 12. When the battery 4 is not under the full-welded protective cover 12, the full-welded protective cover 12 will not fall off.

[0069] Specifically, such as Figure 4 and Figure 5 As shown, the fixing part is a protrusion 112, and the mating part is a groove 122. The protrusion 112 can extend into the groove 122. The mating of the protrusion 112 and the groove 122 can play a positioning role, so that the relative positions of the pre-welded protective cover 11 and the fully welded protective cover 12 are the same each time they come into contact.

[0070] More specifically, there are four pre-welded protective covers 11, which are arranged circumferentially around the full-welded protective cover 12. The full-welded protective cover 12 is a rectangular thin plate, and the four pre-welded protective covers 11 are trapezoidal thin plates. The four pre-welded protective covers 11 abut against the four sides of the full-welded protective cover 12 respectively, and adjacent pre-welded protective covers 11 also abut against each other.

[0071] Optionally, one or more protrusions 112 may be provided on the surface of the pre-welded protective cover 11 facing the fully welded protective cover 12, and one or more grooves 122 may be provided on the surface of the fully welded protective cover 12 facing the pre-welded protective cover 11.

[0072] Furthermore, such as Figure 4 As shown, the full-weld protective cover 12 has a positioning groove 121 on the side that contacts the battery 4, and the positioning groove 121 corresponds to the terminal post 41 on the battery 4. When the positioning groove 121 engages with the terminal post 41, the terminal post 41 restricts the relative position of the full-weld protective cover 12 and the battery 4, thereby positioning the full-weld protective cover 12. At the same time, when the pre-weld protective cover 11 abuts against the full-weld protective cover 12, the pre-weld protective cover 11 is also positioned, resulting in a high consistency in the welding effect of the welding device.

[0073] In one specific implementation, such as Figure 6 and Figure 7 As shown, the welding device further includes: a body 2, which has a first bearing part 21, a second bearing part 22 and a first support part 23. Along the first direction X, the first support part 23 supports the second bearing part 22 above the first bearing part 21. The first bearing part 21 is used to carry the battery 4. The second bearing part 22 is provided with a clearance groove 221 for welding the battery 4 below the clearance groove 221 along the first direction X. A first drive part 13 is arranged circumferentially on the second bearing part 22 along the clearance groove 221.

[0074] In this embodiment, such as Figure 7As shown, both the first support portion 21 and the second support portion 22 are plate-shaped, allowing the first support portion 21 to support the battery 4 relatively stably, thus maintaining the stability of the battery 4 during the welding process. The second support portion 22 can support the protective component 1 relatively stably, thus maintaining the stability of the protective component 1 during the welding process. The first support portion 23 can be four support columns extending along the first direction X. One end of each of the four support columns is fixedly connected to the first support portion 21, and the other end is respectively supported at the four corners of the second support portion 22.

[0075] Optionally, the clearance groove 221 is rectangular, and the four first drive units 13 are fixedly arranged along the circumference of the clearance groove 221. Understandably, the clearance groove 221 can also be square, circular, or other shapes.

[0076] Furthermore, such as Figure 6 and Figure 8 As shown, the welding device also includes a fixing component 3, which includes a base plate 31, a clamping part 32, a second support part 33, and a second driving part 34. The second driving part 34 is disposed on the base plate 31 along the first direction X. The second support part 33 supports the clamping part 32 above it. The clamping part 32 can clamp and fix the battery 4. The second driving part 34 can drive the battery 4 to move along the first direction X.

[0077] When welding is required on battery 4, battery 4 is placed on fixing component 3, which is located below clearance groove 221 along the first direction X. Second drive unit 34 drives battery 4 to rise along the first direction X, so that the top of battery 4 abuts against pre-welded protective cover 11 and full-welded protective cover 12, and the terminal post 41 extends into the positioning groove 121 of full-welded protective cover 12. Clamping part 32 firmly clamps battery 4, so that battery 4 remains stable during welding, thereby ensuring the welding result of cover plate and shell of battery 4.

[0078] When the fixing assembly 3 on which the battery 4 is placed is moved to a position below the second support portion 22, the second drive portion 34 drives the battery 4 to move along the first direction X until the upper surface of the battery 4 is below the second support portion 22, so as to prevent the battery 4 from interfering with the second support portion 22 and damaging the battery 4 or the welding device.

[0079] Understandably, the volume of the first support portion 21 is larger than the volume of the second support portion 22, so that the fixing assembly 3 can insert and remove the battery 4 in the portion other than below the second support portion 22. The second support portion 33 can be four support columns extending along the first direction X, one end of each of the four support columns is fixedly connected to the base plate 31, and the other end is respectively supported at the four corners of the clamping portion 32.

[0080] Specifically, such as Figure 9As shown, the clamping part 32 has a clamping groove 321. Along the first direction X towards the second driving part 34, the clamping size of the clamping groove 321 gradually decreases, that is, the side wall of the clamping groove 321 is inclined relative to the vertical direction. During the process of the battery 4 being placed into the clamping groove 321, the side wall of the clamping groove 321 first plays the role of guiding the battery 4. When the clamping size of the clamping groove 321 is reduced to the same size as the battery 4, the clamping groove 321 clamps the battery 4, thereby fixing the battery 4.

[0081] Optionally, the second drive unit 34 is a motor, and the clamping groove 321 passes through the clamping unit 32. The output shaft of the motor can directly contact the bottom of the battery 4 to support or drive the battery 4.

[0082] Furthermore, such as Figure 7 and Figure 8 As shown, the first bearing part 21 is provided with a slide rail 211 extending along the second direction Y, and the bottom plate 31 is provided with a slide groove 311. The bottom plate 31 is slidably connected to the slide rail 211 through the slide groove 311, and a part of the slide rail 211 extends to the bottom of the clearance groove 221.

[0083] like Figure 1 and Figure 6 As shown, the cooperation between the slide groove 311 and the slide rail 211 can restrict the movement path of the fixing component 3, so that the fixing component 3 moves on a preset path, and prevents the fixing component 3 from colliding with the first support part 23 when the fixing component 3 is moved below the second support part 22.

[0084] like Figure 7 As shown, the welding device also includes a third drive unit 24 disposed on the first support unit 21. The third drive unit 24 includes a drive motor 241 and a lead screw 242. The drive motor 241 can drive the lead screw 242 to rotate. The base plate 31 is provided with a threaded hole 312. The base plate 31 is connected to the lead screw 242 through the threaded hole 312 so that the third drive unit 24 can drive the fixed component 3 to move relative to the first support unit 21.

[0085] like Figure 1 and Figure 6 As shown, when the drive motor 241 drives the lead screw 242 to rotate, the fixing component 3 can slide along the slide rail 211, so that the welding device can automatically move the battery 4 to the welding position and move the battery 4 away from the welding position after welding. Therefore, the welding device has a high degree of automation.

[0086] Preferably, the drive motor 241 is a servo motor. By controlling the number of rotations and the angle of the lead screw 242, the moving distance of the fixing component 3 can be precisely controlled, so that the battery 4 clamped in the fixing component 3 can move exactly to the position where the terminal post 41 is aligned with the positioning groove 121 of the fully welded protective cover 12.

[0087] Optionally, two slide rails 211 are provided, and the drive motor 241 and the lead screw 242 are located between the two slide rails 211. Correspondingly, two slide grooves 311 are also provided on the base plate 31, and the threaded hole 312 is located between the two slide grooves 311.

[0088] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A welding device for welding a cover plate and a case of a battery, characterized by, The welding device comprises: a transmitting source capable of emitting laser light; a protection assembly (1) comprising: pre-welding protection covers (11), full-welding protection covers (12), and a first driving part (13), the pre-welding protection covers (11) are provided with a plurality of pre-welding holes (111), a plurality of the pre-welding protection covers (11) are arranged along the circumference of the full-welding protection covers (12), and the first driving part (13) is capable of driving the pre-welding protection covers (11) to abut against or separate from the full-welding protection covers (12); wherein, when the pre-welding protection covers (11) abut against the full-welding protection covers (12), the laser light emitted by the transmitting source is capable of pre-welding the battery (4) along a first direction (X) through the pre-welding holes (111); when the pre-welding protection covers (11) separate from the full-welding protection covers (12), the full-welding protection covers (12) shield the pole (41) of the battery (4) along the first direction (X), and the laser light emitted by the transmitting source is capable of full-welding the part of the top of the battery (4) that is not shielded by the full-welding protection covers (12), and the first direction (X) is the height direction of the welding device.

2. The welding device of claim 1, wherein, One of the surfaces of the pre-welding protection covers (11) and the full-welding protection covers (12) facing each other is provided with a fixed part, and the other is provided with a matching part, and the fixed part is connected with the matching part.

3. The welding device of claim 2, wherein, The fixed part is a protrusion (112), and the matching part is a groove (122), and the protrusion (112) is capable of extending into the groove (122).

4. The welding device of claim 1, wherein, The pre-welding protection covers (11) are four, and the four pre-welding protection covers (11) are arranged along the circumference of the full-welding protection covers (12).

5. The welding device of claim 1, wherein, The side of the full-welding protection covers (12) for contacting the battery (4) is provided with a positioning groove (121) corresponding to the pole (41) on the battery (4).

6. The welding device according to any one of claims 1-5, characterized in that The welding device further comprises: a machine body (2) having a first bearing part (21), a second bearing part (22), and a first supporting part (23), along the first direction (X), the first supporting part (23) supports the second bearing part (22) above the first bearing part (21), the first bearing part (21) is used for bearing the battery (4), and the second bearing part (22) is provided with an avoiding groove (221) for enabling the battery (4) to be welded below the avoiding groove (221) along the first direction (X); the first driving part (13) is arranged on the second bearing part (22) along the circumference of the avoiding groove (221).

7. The welding device of claim 6, wherein, The welding device further comprises a fixing assembly (3), the fixing assembly (3) comprises a bottom plate (31), a clamping part (32), a second supporting part (33) and a second driving part (34), the second driving part (34) is arranged on the bottom plate (31), the second supporting part (33) supports the clamping part (32) above the second driving part (34) along the first direction (X), the clamping part (32) can clamp and fix the battery (4), and the second driving part (34) can drive the battery (4) to move along the first direction (X).

8. The welding device of claim 7, wherein, The clamping part (32) has a clamping groove (321), and the clamping size of the clamping groove (321) gradually decreases along the direction close to the second driving part (34) along the first direction (X).

9. The welding device of claim 7, wherein, The first bearing part (21) is provided with a sliding rail (211) extending along a second direction (Y), the bottom plate (31) is provided with a sliding groove (311), the bottom plate (31) is connected with the sliding rail (211) through the sliding groove (311), and the second direction (Y) is the length direction of the welding device. Part of the sliding rail (211) extends below the avoiding groove (221).

10. The welding device of claim 9, wherein, The welding device further comprises a third driving part (24) arranged on the first bearing part (21), the third driving part (24) comprises a driving motor (241) and a lead screw (242), the driving motor (241) can drive the lead screw (242) to rotate, the bottom plate (31) is provided with a threaded hole (312), the bottom plate (31) is connected with the lead screw (242) through the threaded hole (312), so that the third driving part (24) can drive the fixing assembly (3) to move relative to the first bearing part (21).

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