Welding device

Abstract

The utility model relates to a welding device used for welding a top cover and a shell of a battery. The welding device comprises an emission source, a machine body and a protection assembly. The emission source can emit laser. The machine body is provided with a base and a sliding rail, a welding position for placing a battery is arranged between the base and the sliding rail, and the sliding rail is higher than the top of the battery when the battery is placed at the welding position; the protection assembly comprises a pre-welding protection cover and a full-welding protection cover, the pre-welding protection cover is in sliding connection with the sliding rail and can slide along the sliding rail, and the full-welding protection cover can be placed on the top of the battery or taken down from the top of the battery. In the welding process, only the position of the pre-welding protective cover needs to be changed by the first driving part, and the position of the full-welding protective cover needs to be changed by the second driving part, so that the welding operation 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 full-welded protective cover is placed on top of the battery for full welding. The pre-welded and full-welded protective covers are placed at two different workstations, and the fixture needs to move back and forth to pick up and put down the two protective 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 top cover and casing of a battery. The welding apparatus includes:

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

[0006] The body has a base and a slide rail, and there is a welding position between the base and the slide rail for placing a battery. When the battery is placed in the welding position, the slide rail is higher than the top of the battery.

[0007] The protective assembly includes a pre-welded protective cover and a fully soldered protective cover, the pre-welded protective cover being slidably connected to and capable of sliding along the slide rail, and the fully soldered protective cover being capable of being placed on top of the battery or removed from the top of the battery.

[0008] In one possible design, the welding device further includes a limiting component located between the base and the slide rail, wherein when the battery is placed in the welding position, the limiting component can abut against the battery to restrict the movement of the battery relative to the body.

[0009] In one possible design, the limiting component includes:

[0010] A fixing part is connected to the base, and the fixing part has a first limiting surface and a second limiting surface that are perpendicular to each other.

[0011] A first moving part, the first moving part is capable of moving along a direction perpendicular to the first limiting surface, and the first moving part has a third limiting surface parallel to the first limiting surface;

[0012] The second moving part is capable of moving in a direction perpendicular to the second limiting surface, and the second moving part has a fourth limiting surface parallel to the second limiting surface;

[0013] The first limiting surface, the second limiting surface, the third limiting surface, and the fourth limiting surface can form the welding position.

[0014] In one possible design, the fixing part is L-shaped.

[0015] In one possible design, the limiting component further includes a third driving part and a fourth driving part. The third driving part is connected to the first moving part and is capable of driving the first moving part to move in a direction perpendicular to the first limiting surface. The fourth driving part is connected to the second moving part and is capable of driving the second moving part to move in a direction perpendicular to the second limiting surface.

[0016] In one possible design, the body further includes: a first support portion, one end of which is connected to the base and the other end of which is connected to the slide rail, and a plurality of the first support portions are distributed circumferentially along the welding position.

[0017] In one possible design, the first moving part and the second moving part are capable of moving between two adjacent first support parts.

[0018] In one possible design, the first moving part and the second moving part are respectively disposed on two adjacent sides of the welding position.

[0019] In one possible design, the protective component includes: a first driving part and a second driving part, wherein the first driving part is capable of driving the pre-welded protective cover to slide along the slide rail, and the second driving part is capable of placing the fully welded protective cover on top of the battery or removing it from the top of the battery; the first driving part and the second driving part are respectively disposed on opposite sides of the welding position.

[0020] In one possible design, the pre-welded protective cover is provided with pre-welded holes, and a plurality of the pre-welded holes are arranged along the circumference of the pre-welded protective cover; the projection of the pre-welded holes on the battery along the height direction of the battery can be distributed on the circumferential edge of the top of the battery;

[0021] And / or, when the full-soldering protective cover is placed on top of the battery, the projection of the full-soldering protective cover onto the battery along the height direction of the battery does not cover the circumferential edge of the top of the battery.

[0022] In one possible design, the welding apparatus further includes a cleaning assembly comprising a cleaning section and a fifth driving section, the fifth driving section being capable of driving the cleaning section to clean the top of the battery.

[0023] In this application, before pre-welding, the first driving unit drives the pre-welding protective cover to slide along a slide rail to the top of the battery. The pre-welding protective cover has pre-welding holes arranged circumferentially, such that the projection of the pre-welding holes along the height direction of the battery onto the top of the battery is distributed along the circumferential edge of the top of the battery. At this time, the laser emitted by the emission source can pass through the pre-welding holes to pre-weld the battery cover and casing. The pre-welding protective cover protects the area on the top of the battery that does not require pre-welding. After pre-welding is completed, the first driving unit drives the pre-welding protective cover to slide along the slide rail to the top of the battery without obstructing it. The second driving unit places the full-welding protective cover on the top of the battery. The projection of the full-welding protective cover along the height direction of the battery onto the top of the battery does not cover the circumferential edge of the top of the battery, meaning that the laser emitted by the emission source can fully weld the area on the top of the battery not covered by the full-welding protective cover. After full welding is completed, the second driving unit removes the full-welding protective cover from the top of the battery.

[0024] During the welding process, only the first drive unit needs to change the position of the pre-welded protective cover and the second drive unit needs to change the position of the full-welded protective cover. Therefore, the welding operation is relatively simple and the time required is short, which helps to improve welding efficiency.

[0025] 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

[0026] Figure 1 This is a schematic diagram of the welding apparatus provided in this application in a specific embodiment;

[0027] Figure 2 for Figure 1 A structural schematic diagram of the welding device from another perspective;

[0028] Figure 3 for Figure 1 Partial cross-sectional view of the middle limit component and battery.

[0029] Figure label:

[0030] 1-The body;

[0031] 11-Base;

[0032] 12-Slide rail;

[0033] 13-First Support Section

[0034] 2-Protection components;

[0035] 21-Pre-welded protective cover;

[0036] 211 - Pre-welded hole;

[0037] 22-Fully welded protective cover;

[0038] 23-First drive unit;

[0039] 24-Second drive unit;

[0040] 25 - Second support section;

[0041] 26-Third Support Section;

[0042] 3-Limiting components;

[0043] 31-Fixing part;

[0044] 311 - First limiting surface;

[0045] 312 - Second limiting surface;

[0046] 32-First moving part;

[0047] 321 - Third limiting surface;

[0048] 33-Second moving part;

[0049] 331 - Fourth limiting surface;

[0050] 34 - Third drive unit;

[0051] 35 - Fourth Drive Unit;

[0052] 4- Cleaning components;

[0053] 41-Cleaning Department;

[0054] 42-Fifth Drive Unit;

[0055] 43-Sixth Support Section;

[0056] 5-Battery.

[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 top cover and casing of a battery 5. When welding the cover and casing of the battery 5, pre-welding is required before full welding.

[0064] like Figure 1 As shown, the welding device includes: an emission source, a body 1, and a protective component 2. The emission source is capable of emitting laser light. The body 1 has a base 11 and a slide rail 12. There is a welding position for placing a battery 5 between the base 11 and the slide rail 12. When the battery 5 is placed in the welding position, the slide rail 12 is higher than the top of the battery 5. The protective component 2 includes: a pre-welded protective cover 21, a full-welded protective cover 22, a first driving part 23, and a second driving part 24. The pre-welded protective cover 21 is slidably connected to the slide rail 12. The first driving part 23 can push the pre-welded protective cover 21 to slide along the slide rail 12. The second driving part 24 can place the full-welded protective cover 22 on the top of the battery 5 or remove it from the top of the battery 5.

[0065] Since the slide rail 12 is higher than the top of the battery 5 when the battery 5 is placed in the welding position, the pre-welded protective cover 21 can slide under the drive of the first drive unit 23 to completely cover the top of the battery 5, or can slide under the drive of the first drive unit 23 to completely not cover the top of the battery 5, and the pre-welded protective cover 21 will not interfere with the battery 5.

[0066] Specifically, the battery 5 to be welded is first placed in the welding position. Before pre-welding, the first drive unit 23 drives the pre-welding protective cover 21 to slide along the slide rail 12 above the battery 5. The pre-welding protective cover 21 is provided with pre-welding holes 211, and multiple pre-welding holes 211 are arranged circumferentially along the pre-welding protective cover 21, so that the projection of the pre-welding holes 211 along the height direction of the battery 5 onto the top of the battery 5 is distributed along the circumferential edge of the top of the battery 5. At this time, the laser emitted by the emission source can pass through the pre-welding holes 211 to pre-weld the cover plate and casing of the battery 5. The pre-welding protective cover 21 protects the area on the top of the battery 5 that does not require pre-welding. After pre-soldering is completed, the first drive unit 23 drives the pre-soldering protective cover 21 to slide along the slide rail 12 until it does not obstruct the top of the battery 5. The second drive unit 24 places the full-soldering protective cover 22 on the top of the battery 5. The projection of the full-soldering protective cover 22 along the height direction of the battery 5 onto the top of the battery 5 does not cover the circumferential edge of the top of the battery 5. That is, the laser emitted by the emission source can perform full soldering on the area on the top of the battery 5 that is not covered by the full-soldering protective cover 22. After full soldering is completed, the second drive unit 24 removes the full-soldering protective cover 22 from the top of the battery 5.

[0067] During the welding process, only the first drive unit 23 needs to change the position of the pre-welding protective cover 21 and the second drive unit 24 needs to change the position of the full-welding protective cover 22. Therefore, the welding operation is relatively simple and the time required is short, which is conducive to improving welding efficiency.

[0068] More specifically, the first drive unit 23 can be a motor, and the output shaft of the motor is connected to the pre-welded protective cover 21. When the first drive unit 23 is a servo motor, the pre-welded protective cover 21 can be controlled to slide to the same position above the welding position each time, eliminating the need for manual positioning of the pre-welded protective cover 21 and simplifying the welding process of the battery 5. The second drive unit 24 can be a robotic arm that uses negative pressure to lift the fully welded protective cover 22. By designing the stroke of the robotic arm, it can be ensured that the robotic arm places the fully welded protective cover 22 at the same position on top of the battery 5 each time. In addition, a terminal post is provided on the top of the battery 5, and mating grooves can be provided on the side of the pre-welded protective cover 21 and the fully welded protective cover 22 facing the battery 5. The mating of the terminal post and the mating groove can further position the pre-welded protective cover 21 and the fully welded protective cover 22.

[0069] In one specific implementation, such as Figure 1As shown, the welding device also includes a limiting component 3, which is located between the base 11 and the slide rail 12. When the battery 5 is placed in the welding position, the limiting component 3 can abut against the battery 5 to limit the movement of the battery 5 relative to the body 1, so that the battery 5 can remain stable during the welding process and the welding effect of the welding device is highly consistent.

[0070] Specifically, such as Figure 2 and Figure 3 As shown, the limiting component 3 includes: a fixing part 31, a first moving part 32, and a second moving part 33. The fixing part 31 is connected to the base 11 and has a first limiting surface 311 and a second limiting surface 312 that are perpendicular to each other. The first moving part 32 can move along a direction perpendicular to the first limiting surface 311 and has a third limiting surface 321 that is parallel to the first limiting surface 311. The second moving part 33 can move along a direction perpendicular to the second limiting surface 312 and has a fourth limiting surface 331 that is parallel to the second limiting surface 312. The first limiting surface 311, the second limiting surface 312, the third limiting surface 321, and the fourth limiting surface 331 can form a welding position.

[0071] When the battery 5 to be welded needs to be placed in the welding position, the first moving part 32 moves away from the fixed part 31 in a direction perpendicular to the first limiting surface 311, and the second moving part 33 moves away from the fixed part 31 in a direction perpendicular to the second limiting surface 312, so that the gap between the fixed part 31, the first moving part 32 and the second moving part 33 is larger than the size of the battery 5, so that the battery 5 can be easily placed between the fixed part 31, the first moving part 32 and the second moving part 33. Then, the first moving part 32 approaches the fixed part 31 along the direction perpendicular to the first limiting surface 311, the third limiting surface 321 first abuts against the battery 5, and then pushes the battery 5 to abut against the first limiting surface 311; the second moving part 33 approaches the fixed part 31 along the direction perpendicular to the second limiting surface 312, the fourth limiting surface 331 first abuts against the battery 5, and then pushes the battery 5 to abut against the second limiting surface 312, so that the battery 5 abuts against the first limiting surface 311, the second limiting surface 312, the third limiting surface 321 and the fourth limiting surface 331 at the same time, that is, the battery 5 is limited by the fixed part 31, the first moving part 32 and the second moving part 33, and the battery 5 is in the welding position.

[0072] Optionally, the fixing part 31 is L-shaped, so that the fixing part 31 has a first limiting surface 311 and a second limiting surface 312 that are perpendicular to each other, and the fixing part 31 has a simple structure and is easy to manufacture.

[0073] Furthermore, the limiting component 3 also includes a third driving part 34 and a fourth driving part 35. The third driving part 34 is connected to the first moving part 32 and can drive the first moving part 32 to move in a direction perpendicular to the first limiting surface 311. The fourth driving part 35 is connected to the second moving part 33 and can drive the second moving part 33 to move in a direction perpendicular to the second limiting surface 312.

[0074] The third drive unit 34 can be a motor, and the output shaft of the motor is fixedly connected to the first moving part 32, thereby driving the first moving part 32 to move closer to or away from the fixed part 31. Similarly, the fourth drive unit 35 can be a motor, and the output shaft of the motor is fixedly connected to the second moving part 33, thereby driving the second moving part 33 to move closer to or away from the fixed part 31.

[0075] Optionally, the first moving part 32 and the second moving part 33 do not contact the base 11. That is, the first moving part 32 is suspended relative to the base 11 under the support of the third driving part 34, and the second moving part 33 is suspended relative to the base 11 under the support of the fourth driving part 35. This prevents the first moving part 32 and the second moving part 33 from rubbing against the base 11, reduces the resistance to the movement of the first moving part 32 and the second moving part 33, and makes it less likely for the third limiting surface 321 and the fourth limiting surface 331 to tilt.

[0076] In one specific embodiment, the body 1 further includes a first support part 13, one end of which is connected to the base 11 and the other end is connected to the slide rail 12. Multiple first support parts 13 are distributed circumferentially along the welding position, thereby stably supporting the slide rail 12 above the battery 5.

[0077] Preferably, four first support parts 13 are provided, and the four first support parts 13 form a rectangular space.

[0078] Specifically, the first moving part 32 and the second moving part 33 are capable of moving between two adjacent first support parts 13. The space between two adjacent first support parts 13 corresponds exactly to one side surface of the battery 5. The movement of the first moving part 32 and the second moving part 33 between the two adjacent first support parts 13 allows them to contact one side surface of the battery 5 and push the battery 5 to the welding position.

[0079] More specifically, such as Figure 1 and Figure 2 As shown, the first moving part 32 and the second moving part 33 are respectively disposed on two adjacent sides of the welding position, such that the third limiting surface 321 of the first moving part 32 and the fourth limiting surface 331 of the second moving part 33 are perpendicular to each other and parallel to the first limiting surface 311 or the second limiting surface 312 respectively.

[0080] The first driving unit 23 and the second driving unit 24 are respectively disposed on opposite sides of the welding position, so that the pre-welded protective cover 21 and the full-welded protective cover 22 can move from opposite sides of the battery 5 to the top of the battery 5. Since the width of the pre-welded protective cover 21 is greater than the width of the full-welded protective cover 22, and the distance that the pre-welded protective cover 21 needs to move to the top of the battery 5 on the slide rail 12 is large, the distance between the first driving unit 23 and the welding position needs to be large. By placing the first moving unit 32 between the first driving unit 23 and the welding position, the space can be used reasonably and the volume of the entire welding device can be reduced.

[0081] Preferably, in order to facilitate the connection between the first drive unit 23 and the pre-welded protective cover 21, a second support unit 25 is provided below the first drive unit 23, and in order to facilitate the connection between the second drive unit 24 and the full-welded protective cover 22, a third support unit 26 is provided below the second drive unit 24.

[0082] In the above embodiments, such as Figure 1 and Figure 2 As shown, the welding device also includes a cleaning component 4, which includes a cleaning section 41 and a fifth drive section 42. The fifth drive section 42 is capable of driving the cleaning section 41 to clean the top of the battery 5.

[0083] The cleaning unit 41 has a rotatable cleaning roller, and the fifth drive unit 42 can drive the cleaning roller to clean the top of the battery 5 before or after welding to improve welding quality or remove welding slag. The fifth drive unit 42 can be a motor, and the cleaning unit 41 is connected to the output shaft of the motor.

[0084] Optionally, the cleaning component 4 also includes a sixth support 43, which supports the fifth drive unit 42, allowing the cleaning unit 41 to contact the top of the battery 5.

[0085] Preferably, the first driving part 23 and the second driving part 24 are respectively disposed on both sides of the welding position along the width direction, the cleaning part 41 and the first moving part 32 are respectively disposed on both sides of the welding position along the length direction, the cleaning part 41 is disposed on the side of the first limiting surface 311 away from the welding position, the second driving part 24 is disposed on the side of the second limiting surface 312 away from the welding position, and the second moving part 33 is disposed between the first driving part 23 and the welding position, thereby making reasonable use of space and making the overall volume of the welding device smaller.

[0086] 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 apparatus for welding a top cover and a case of a battery, characterized by, The welding device comprises: a transmitting source capable of emitting laser light; a body (1) having a base (11) and a slide rail (12), the base (11) and the slide rail (12) having a welding position for placing a battery (5), the slide rail (12) being higher than the top of the battery (5) when the battery (5) is placed in the welding position; a protection assembly (2) comprising a pre-welding protection cover (21) and a full-welding protection cover (22), the pre-welding protection cover (21) being in sliding connection with the slide rail (12) and capable of sliding along the slide rail (12), and the full-welding protection cover (22) being capable of being placed on or removed from the top of the battery (5).

2. The welding device of claim 1, wherein, The welding device further comprises a limiting assembly (3) located between the base (11) and the slide rail (12), the limiting assembly (3) being capable of abutting against the battery (5) to limit the movement of the battery (5) relative to the body (1) when the battery (5) is placed in the welding position.

3. The welding device of claim 2, wherein, The limiting assembly (3) comprises: a fixed part (31) connected with the base (11), the fixed part (31) having a first limiting surface (311) and a second limiting surface (312) perpendicular to each other; a first moving part (32) capable of moving in a direction perpendicular to the first limiting surface (311), the first moving part (32) having a third limiting surface (321) parallel to the first limiting surface (311); a second moving part (33) capable of moving in a direction perpendicular to the second limiting surface (312), the second moving part (33) having a fourth limiting surface (331) parallel to the second limiting surface (312); wherein the first limiting surface (311), the second limiting surface (312), the third limiting surface (321), and the fourth limiting surface (331) can enclose the welding position.

4. The welding device of claim 3, wherein, The fixed part (31) is L-shaped.

5. The welding device of claim 3, wherein, The limiting assembly (3) further comprises a third driving part (34) connected with the first moving part (32) and capable of driving the first moving part (32) to move in a direction perpendicular to the first limiting surface (311), and a fourth driving part (35) connected with the second moving part (33) and capable of driving the second moving part (33) to move in a direction perpendicular to the second limiting surface (312).

6. The welding device of claim 3, wherein, The body (1) further comprises a first support part (13) having one end connected with the base (11) and the other end connected with the slide rail (12), a plurality of the first support parts (13) being distributed along the circumference of the welding position.

7. The welding device of claim 6, wherein, The first moving part (32) and the second moving part (33) are capable of moving between two adjacent first support parts (13).

8. The welding device of claim 3, wherein, The first moving part (32) and the second moving part (33) are respectively arranged on the two sides adjacent to the welding position.

9. The welding device of claim 1, wherein, The protection assembly (2) comprises a first driving part (23) and a second driving part (24), the first driving part (23) can drive the pre-welding protection cover (21) to slide along the slide rail (12), and the second driving part (24) can place or remove the full-welding protection cover (22) on or from the top of the battery (5). The first driving part (23) and the second driving part (24) are respectively arranged on the two sides opposite to the welding position.

10. The welding device of claim 1, wherein, The pre-welding protection cover (21) is provided with a pre-welding hole (211), and a plurality of pre-welding holes (211) are arranged along the circumference of the pre-welding protection cover (21); the projection of the pre-welding hole (211) on the battery (5) along the height direction of the battery (5) can be distributed on the circumferential edge of the top of the battery (5). And / or, when the full-welding protection cover (22) is placed on the top of the battery (5), the projection of the full-welding protection cover (22) on the battery (5) along the height direction of the battery (5) does not cover the circumferential edge of the top of the battery (5).

11. The welding device according to any of claims 1-10, characterized in that The welding device further comprises a cleaning assembly (4), and the cleaning assembly (4) comprises a cleaning part (41) and a fifth driving part (42), the fifth driving part (42) can drive the cleaning part (41) to clean the top of the battery (5).

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