Welding equipment and welding method thereof

Abstract

The invention discloses welding equipment and a welding method thereof. The welding equipment comprises a rack; the conveying module is arranged on the rack and is used for conveying a plurality of products to be detected to continuously move along a first direction; the pre-welding detection module is arranged on the rack, the pre-welding detection module comprises a first camera assembly and a product detection assembly, the first camera assembly is electrically connected with the product detection assembly, and the product detection assembly is used for obtaining motion information of the to-be-detected product; the first camera assembly is used for acquiring a welding surface image of the to-be-detected product before welding; and the welding module is used for welding the to-be-tested product according to the welding surface image. The first camera assembly obtains a complete welding face image according to the motion information, detection and welding are completed in the conveying process of the to-be-detected product, the total time length of the welding procedure of the to-be-detected product is greatly shortened, and the productivity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery welding, and in particular to a welding device and a welding method thereof. Background Art

[0002] In power battery manufacturing, busbar welding is a critical process in the power battery assembly process. There are dozens or even hundreds of busbar welding points. In order to ensure quality, the inspection process during busbar welding will further prolong the welding time, resulting in the busbar welding process taking too long, which seriously reduces the overall processing efficiency of the battery module. Most of the existing laser welding station solutions are that the battery pack modules or packages to be welded flow into the station through the assembly line, and then the welding of each battery cell connecting piece is completed through the plane camera photo guidance, the connection piece pressure head is pressed down, the welding plane distance compensation, the gap value calculation and judgment, and the welding action cycle. After the welding of each battery cell connecting piece is completed, the welding spot inspection is carried out, and the product flows out and the welding process of the next product is carried out again. The cycle of different actions above leads to intermittent module switching, welding processing station occupancy, and product production line outflow process, resulting in the loss of welding cycle and limiting the production capacity of the welding station. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a welding device, in which a first camera component obtains a complete welding surface image according to motion information, completes detection and welding during the conveying process of the product to be tested, greatly shortens the total welding process time of the product to be tested, and improves production capacity.

[0004] The welding equipment according to the embodiment of the present invention includes: a frame; a conveying module, which is installed on the frame and is used to convey multiple products to be tested to move continuously along a first direction; a pre-welding inspection module, which is arranged on the frame, and the pre-welding inspection module includes: a first camera component and a product detection component, the first camera component is electrically connected to the product detection component, the product detection component is used to obtain movement information of the product to be tested, and the first camera component is used to obtain a welding surface image of the product to be tested before welding; and a welding module, which welds the product to be tested according to the welding surface image.

[0005] According to the welding equipment of the embodiment of the present invention, the first camera component obtains a complete welding surface image according to the motion information, completes the inspection and welding during the conveying process of the product to be tested, greatly shortens the total welding process time of the product to be tested, and improves the production capacity.

[0006] According to some embodiments of the present invention, the pre-welding inspection module further includes: a distance measuring component, and the distance measuring component is used to obtain the welding distance of the product to be tested and the pre-welding gap value of the connecting piece of the product to be tested.

[0007] According to some embodiments of the present invention, the welding equipment further includes: a post-weld detection module, which is used to obtain welding information of the welding surface of the product to be tested after welding, and determine whether the welding quality meets the requirements based on the welding information.

[0008] According to some embodiments of the present invention, the post-weld inspection module further includes: an AI processor, the AI ​​processor is electrically connected to the second camera assembly, and the AI ​​processor is used to determine whether the welding quality meets the requirements based on the welding information.

[0009] According to some embodiments of the present invention, the post-weld inspection module includes: a second camera assembly, and the second camera assembly is used to obtain a welding surface image of the product to be tested after welding.

[0010] According to some embodiments of the present invention, the post-weld inspection module further includes: an AI processor, which is electrically connected to the second camera assembly, and is used to determine whether the welding quality meets the requirements based on the welding surface image after welding.

[0011] According to some embodiments of the present invention, the welding module includes: a laser welding component and a deviation correction component, the laser welding component is used to emit laser and weld the product to be tested, and the deviation correction component is used to correct the laser welding component.

[0012] According to some embodiments of the present invention, the welding module further includes: a first detection component, which is used to monitor the light emitted by the laser welding component; and / or, the welding module further includes: a second detection component, which is used to monitor the penetration depth of each welding position of the product to be tested.

[0013] According to some embodiments of the present invention, the welding equipment further comprises: a driving mechanism, the driving mechanism is drivingly connected to the welding module, and the driving mechanism is used to drive the welding module to move synchronously with the product to be tested.

[0014] According to some embodiments of the present invention, the driving mechanism is a welding robot, the welding module is connected to the welding robot, and the welding robot is used to drive the welding module to move synchronously with the product to be tested.

[0015] According to some embodiments of the present invention, the conveying module includes: a driving component and a conveying component, and the driving component is used to drive the conveying component to convey the product to be tested to move along a first direction.

[0016] According to some embodiments of the present invention, the conveying module includes: a support frame, the support frame is connected to the frame, the conveying assembly includes: a plurality of rollers, the plurality of rollers are arranged on the support frame, and the plurality of rollers are arranged at intervals along a first direction; a plurality of carriers are supported on the plurality of rollers, and the carriers are used to carry the products to be tested; the driving assembly is used to drive the plurality of rollers to move, so as to convey the carriers to move along the first direction.

[0017] According to some embodiments of the present invention, the welding equipment further includes: a plurality of clamping assemblies, the clamping assemblies corresponding to the carrier and moving synchronously with the carrier, the clamping assemblies being used to press the product to be tested onto the carrier.

[0018] A welding method for welding equipment according to a second aspect of an embodiment of the present invention comprises the following steps: S1: The product detection component obtains the motion information of the product to be tested; S2: The first camera component determines a shooting time according to the motion information, obtains a welding surface image of the product to be tested before welding, and converts the welding surface image into initial coordinates; S3: The pre-welding detection module obtains the welding distance of the product to be tested and the pre-welding gap value of the connecting piece; S4: The controller obtains the three-dimensional target coordinates according to the initial coordinates, the welding distance of the product to be tested and the gap value before welding of the connecting piece; S5: The welding module welds the product to be tested according to the target coordinates.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic structural diagram of a welding device according to an embodiment of the present invention; Figure 2 is a simplified diagram of a welding device according to an embodiment of the present invention; Figure 3 is a structural schematic diagram of a pre-welding inspection module according to an embodiment of the present invention; Figure 4 is a structural schematic diagram of a welding module according to an embodiment of the present invention; Figure 5 is a structural schematic diagram of a post-weld inspection module according to an embodiment of the present invention; Figure 6is a flow chart of a welding method of a welding device according to an embodiment of the present invention.

[0021] Reference numerals: 100. Welding equipment; 11. Frame; 12. Welding robot; 13. Carrier; 14. Product to be tested; 20. Conveying module; 30. Pre-welding inspection module; 31. First camera assembly; 32. Product inspection assembly; 33. Distance measurement assembly; 40. welding module; 41. laser welding assembly; 42. deviation correction assembly; 43. first detection assembly; 44. second detection assembly; 50. Post-weld inspection module; 51. Second camera assembly. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0023] Reference below Figure 1-Figure 6 The welding device 100 according to the embodiment of the present invention is described, and a welding method used for the welding device 100 is also proposed.

[0024] like Figure 1 As shown, the welding device 100 includes: a frame 11 and a conveying module 20, the conveying module 20 is installed on the frame 11, and is used to convey multiple products to be tested 14 to continuously move along a first direction. The conveying module 20 can continuously transmit multiple products to be tested 14 to improve welding efficiency. The product to be tested 14 can be a battery module or battery pack to be tested.

[0025] The welding device 100 includes: a pre-welding detection module 30, which is arranged on the frame 11, and the pre-welding detection module 30 includes: a first camera component 31 and a product detection component 32. The pre-welding detection module 30 can obtain information of the product to be tested 14 and a welding surface image before welding, and the pre-welding detection module 30 can obtain the welding distance of the product to be tested 14 and the pre-welding gap value of the connecting piece of the product to be tested 14.

[0026] The product detection component 32 can be used to obtain movement information of the product to be tested 14 , and the movement information includes: the movement distance of the product to be tested 14 .

[0027] The product detection component 32 can also obtain assembly information of the product to be tested 14, for example, by detecting the characteristic positions of each assembly module part of the product to be tested 14, to determine whether the tooling assembly and parts assembly of the product to be tested 14 meet the welding process requirements. The product detection component 32 may include: a grating sensor, which is used to measure the information of the welding surface of the product to be tested 14 to determine whether it meets the welding process requirements.

[0028] In some embodiments, the welding device 100 may include: a diversion module. If the product detection component 32 confirms that the assembly of the product to be tested 14 does not meet the welding processing requirements, the diversion module will divert the product to be tested 14 to the previous station for reprocessing.

[0029] And, the first camera assembly 31 is electrically connected to the product detection assembly 32, and the first camera assembly 31 is used to obtain the welding surface image of the product to be tested 14 before welding. Specifically, since the first camera assembly 31 cannot obtain the complete welding surface image of the product to be tested 14 in a single shot, the first camera assembly 31 can obtain multiple sub-images of the welding surface of the product to be tested 14, thereby obtaining the welding surface image. The first camera assembly 31 can obtain the initial coordinates of the welding point of the product to be tested 14 according to the welding surface image.

[0030] The first camera assembly 31 may be a high-resolution area array camera or a 3D camera, so as to more accurately obtain the initial coordinates of the product 14 to be tested.

[0031] Furthermore, the first camera assembly 31 is electrically connected to the product detection assembly 32. After acquiring the previous sub-image, the first camera assembly 31 can determine when to take a photo to acquire the next sub-image according to the moving distance of the product 14 to be tested detected by the product detection assembly 32. In this way, the welding surface image of the product 14 to be tested can be acquired by taking photos multiple times.

[0032] In some other embodiments, a plurality of marking points may be provided on the product to be tested 14, and the plurality of marking points are arranged at intervals along the first direction. The product detection component 32 transmits information to the first camera component 31 by detecting the marking points, so that the first camera component 31 determines when to take a picture to obtain the next sub-image.

[0033] like Figure 2 As shown, there may be two pre-weld inspection modules 30, which are respectively disposed on both sides of the length direction of the product to be tested 14, to respectively inspect the two welding surfaces of the product to be tested 14 and obtain welding surface images.

[0034] The welding device 100 may further include: a welding module 40, and the welding module 40 welds the product to be tested 14 according to the welding surface image. Specifically, the position where the welding module 40 is located is a welding station, and the conveying module 20 conveys the product to be tested 14 along the first direction, and sequentially conveys it to the corresponding pre-welding inspection module 30 and the corresponding welding module 40. When the conveying module 20 conveys the product to be tested 14 to the corresponding welding module 40, the product to be tested 14 is in the welding station.

[0035] like Figure 2 As shown, there may be two welding modules 40 , and the two welding modules 40 are respectively disposed on both sides of the length direction of the product to be tested 14 , and respectively weld the two welding surfaces of the product to be tested 14 .

[0036] The welding device 100 includes: a controller, which is integrated with standard product coordinates and constructs a three-dimensional coordinate system of welding points.

[0037] The welding surface image includes: multiple welding points. The initial coordinates of the welding points of the product to be tested 14 are compared with the standard product coordinates and converted into target coordinates of the three-dimensional coordinate system of the welding module 40. Therefore, the welding module 40 can confirm the movement trajectory of the welding module 40 according to the target coordinates, thereby welding the product to be tested 14.

[0038] Thus, the first camera assembly 31 obtains a complete welding surface image according to the motion information, completes the inspection and welding during the transportation of the product 14 to be tested, greatly shortens the total welding process time of the product 14 to be tested, and improves production capacity. After the product 14 to be tested is transferred and loaded to the welding process in the previous process, the pre-welding inspection is completed during the entire process of the product 14 flowing into and out of the welding process; during the welding process of the product 14 to be tested, the welding equipment 100 does not need to be repeatedly started and stopped, and the welding module 40 directly performs welding processing on the product 14 to be tested, so that the product 14 to be tested does not need to be started and stopped at the welding station, and the welding processing is completed at one time, and finally the flying welding processing of the product 14 to be tested and the quality control of the entire welding process are realized, which greatly shortens the total welding process time of the product 14 to be tested and improves production capacity.

[0039] like Figure 2 and Figure 3As shown, the pre-welding inspection module 30 also includes: a distance measuring component 33, which is used to obtain the welding distance of the product to be tested 14 and the pre-welding gap value of the connecting piece of the product to be tested 14. Specifically, the distance measuring component 33 can obtain the welding distance (height coordinate) of multiple welding points on the welding surface of the product to be tested 14, and form the target coordinates of the welding point in the three-dimensional coordinate system by measuring multiple welding points of the product to be tested 14, combined with the initial coordinates of the plane obtained by the first camera component 31, so as to facilitate the welding module 40 to weld the product to be tested 14; on the other hand, the distance measuring component 33 is used to measure the pre-welding gap value of the connecting piece of the product, that is, to detect the product assembly state before welding the connecting piece of the welding surface of the product to be tested 14, and ensure that it meets the welding processing requirements of the product to be tested 14 before entering the welding station for welding.

[0040] If the gap value before welding of the connecting piece is greater than the set threshold, the product to be tested 14 can be reflowed to the previous station through the diversion module.

[0041] Combination Figure 1 , Figure 2 and Figure 5 As shown, the welding device 100 further includes: a post-welding inspection module 50, which is used to obtain welding information of the welding surface of the product to be tested 14 after welding, and judge whether the welding quality meets the requirements according to the welding information. Specifically, the conveying module 20 conveys the product to be tested 14 to the pre-welding inspection module 30, the welding module 40 and the post-welding inspection module 50 in sequence. After the welding module 40 completes welding of the product to be tested 14, the second camera assembly 51 takes a picture of the welding surface of the product to be tested 14 after welding, and obtains an image of the welding surface after welding.

[0042] The post-weld inspection module 50 can use a post-weld camera or sensor to replace manual acquisition of weld feature information after welding, and quickly confirm the weld quality result by image reconstruction and comparison of qualified samples and bad sample image templates. In the example, different devices are selected according to the weld characteristics.

[0043] If the pre-welding gap value of the connecting piece is greater than the set threshold, the conveying module 20 can continue to convey the product to be tested 14 to the post-welding inspection module 50 , and the welding module 40 does not weld the product to be tested 14 .

[0044] like Figure 2 As shown, there can be two post-weld inspection modules 50, and the two welding modules 40 are respectively arranged on both sides of the length direction of the product to be tested 14, respectively obtaining welding information of the two welding surfaces of the product to be tested 14 after welding, and judging whether the welding quality meets the requirements based on the welding information.

[0045] The post-weld inspection module 50 may include: a sensor, which obtains welding information of the welding surface of the product to be tested 14 after welding. The post-weld inspection module 50 compares the obtained welding information with the standard product to determine whether the welding quality of the product to be tested 14 meets the requirements.

[0046] In some embodiments, the post-weld inspection module 50 may include: a second camera component 51, wherein the second camera component 51 is used to obtain a welding surface image of the product to be tested 14 after welding, and the second camera component 51 takes a picture of the welding surface of the product to be tested 14 after welding to obtain a welding surface image, and the welding surface image includes welding information, such as information of the weld.

[0047] In addition, the post-weld inspection module 50 may include: an image display, and the second camera component 51 may be communicated with the image display, so that the second camera component 51 can transmit the welding surface image to the image display, and a human being can judge whether the welding quality meets the requirements based on the welding surface image at the display.

[0048] Alternatively, the post-weld inspection module 50 may further include: an AI processor, the AI ​​processor is electrically connected to the second camera assembly 51, and the AI ​​processor is used to determine whether the welding quality meets the requirements based on the welding surface image after welding.

[0049] like Figure 4 As shown, the welding module 40 includes: a laser welding component 41 and a correction component 42. The laser welding component 41 is used to emit laser and weld the product to be tested 14, and the correction component 42 is used to correct the laser welding component 41. During the welding process, the correction component 42 is combined with the light emitting position trajectory of the laser welding component 41 to realize flying welding.

[0050] Furthermore, the welding module 40 also includes: a first detection component 43, the first detection component 43 is used to monitor the light emitted by the laser welding component 41; specifically, the first detection component 43 includes: a photoelectric sensor, the first detection component 43 integrates an optical system and a photoelectric sensor, the photoelectric sensor corresponds to the wavelengths of several kinds of light emitted by the laser welding component 41, that is, there can be multiple light sensors, and the multiple photoelectric sensors respectively detect light of different wavelengths, which are used to monitor multiple lights in the welding process.

[0051] For example, the light may include light in three different wavelength bands: visible light 400nm-800nm, reflected light 1030nm-1080nm, and infrared light 800nm-1200nm.

[0052] Furthermore, the welding module 40 further includes: a second detection component 44, which is used to monitor the penetration depth of each welding position of the product to be tested 14. The second detection component 44 may include a sensor, which may be a coherent light principle sensor, and the second detection component 44 collects the keyhole information of the molten pool during the welding process, thereby obtaining the corresponding welding penetration depth information.

[0053] Among them, the first detection component 43 and the second detection component 44 are welding online detection modules, which realize the monitoring, detection and feedback of the quality of the product 14 to be tested during the welding process.

[0054] In some embodiments, the welding device 100 further includes: a driving mechanism, which is in transmission connection with the welding module 40, and is used to drive the welding module 40 to move synchronously with the product to be tested 14. In other words, the driving mechanism is used to drive the welding module 40 to move at a corresponding speed at the welding station according to the constructed three-dimensional coordinate system, and trigger the laser welding assembly 41 to work at the corresponding movement point to achieve laser flying welding.

[0055] like Figure 1 and Figure 2 As shown, the driving mechanism is a welding robot 12, and the welding module 40 is connected to the welding robot 12. The welding robot 12 is used to drive the welding module 40 to move synchronously with the product to be tested 14. Specifically, the welding robot 12 can drive the welding module 40 to move, so as to realize the target coordinate movement according to the three-dimensional coordinate system, and complete the welding of the product to be tested 14. The initial coordinates and welding distance obtained by the pre-welding detection component and the controller construct a three-dimensional coordinate system of the welding point. The welding robot 12 drives the welding module 40 to move at a corresponding speed at the welding station according to the constructed three-dimensional coordinate system, and triggers the laser welding component 41 to work at the corresponding movement point, so as to realize the laser flying welding under the coordinated control of the welding robot 12 and the laser welding component 41.

[0056] according to Figure 1 As shown, the conveying module 20 includes: a driving component and a conveying component, and the driving component is used to drive the conveying component to convey the product to be tested 14 to move along the first direction. Specifically, the conveying component is used to carry a plurality of products to be tested 14, and the driving component can drive the conveying component to move along the first direction to sequentially convey the plurality of products to be tested 14 to the pre-welding inspection module 30, the welding module 40 and the post-welding inspection module 50 to complete the welding of the plurality of products to be tested 14.

[0057] And, the conveying module 20 includes: a support frame, the support frame is connected to the frame 11, and the conveying assembly includes: a plurality of rollers, the plurality of rollers are arranged on the support frame, and the plurality of rollers are arranged at intervals along the first direction. The plurality of rollers are rotatably connected to the support frame, the support frame provides mounting points for the plurality of rollers, the axes of the plurality of rollers are parallel, and the plurality of rollers are arranged at intervals along the first direction to support the plurality of products to be tested 14.

[0058] A plurality of platforms 13 are supported on the plurality of rollers, and the platforms 13 are used to carry the products to be tested 14; the driving assembly is used to drive the plurality of rollers to move, so as to convey the platforms 13 to move along the first direction. Specifically, the driving assembly is connected to the plurality of rollers in a transmission manner to drive the plurality of rollers to rotate, so as to convey the platforms 13 and the products to be tested 14 on the platforms 13 to move along the first direction, and the products to be tested 14 are sequentially moved to the pre-welding inspection module 30, the welding module 40 and the post-welding inspection module 50, so as to complete the welding of the plurality of products to be tested 14 According to some embodiments of the present invention, the welding device 100 further includes: a plurality of clamping components, the clamping components correspond to the carrier 13 and move synchronously with the carrier 13, and the clamping components are used to clamp the product to be tested 14 on the carrier 13. Specifically, the plurality of clamping components cooperate with the plurality of carriers 13 respectively, and the plurality of clamping components move synchronously with the carrier 13, that is, the plurality of clamping components move synchronously with the product to be tested 14, and the plurality of clamping components can cooperate with the product to be tested 14 of different sizes, so the welding device 100 of this solution can be compatible with the product to be tested 14 of multiple sizes and multiple forms, meeting the production application requirements.

[0059] Combination Figure 6 As shown, the welding method of the welding device 100 according to the second aspect of the present invention comprises the following steps: S1: The product detection component 32 obtains movement information of the product to be detected 14.

[0060] The pre-welding inspection module 30 includes: a product inspection component 32 , which can be used to obtain motion information of the product to be tested 14 , and the motion information includes: a moving distance of the product to be tested 14 .

[0061] S2: The first camera assembly 31 determines a shooting time according to the motion information, obtains a welding surface image of the product to be tested 14 before welding, and converts the welding surface image into initial coordinates.

[0062] The pre-welding inspection module 30 may include: a first camera assembly 31. Since the first camera assembly 31 cannot obtain a complete welding surface image of the product to be tested 14 in a single shot, the first camera assembly 31 may obtain multiple sub-images of the welding surface of the product to be tested 14, thereby obtaining a welding surface image. The first camera assembly 31 may obtain the initial coordinates of the product to be tested 14 according to the welding surface image.

[0063] S3: The pre-welding detection module 30 obtains the welding distance and the pre-welding gap value of the connecting piece of the product to be tested 14 .

[0064] The pre-welding inspection module 30 further includes: a distance measuring component 33, which is used to obtain the welding distance of the product to be tested 14 and the pre-welding gap value of the connecting piece of the product to be tested 14. Specifically, by measuring multiple welding points of the product to be tested 14, the distance measuring component 33 can obtain the welding distance (height coordinate) of multiple welding points on the welding surface of the product to be tested 14.

[0065] S4: The controller obtains the three-dimensional target coordinates according to the initial coordinates, the welding distance of the product to be tested 14 and the gap value before welding of the connecting piece.

[0066] The controller combines the initial coordinates and height coordinates of the plane acquired by the first camera assembly 31 to form the target coordinates of the welding point in the three-dimensional coordinate system.

[0067] S5: The welding module 40 welds the product to be tested 14 according to the target coordinates.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0070] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A welding device, characterized in that: include: Rack(11); A conveying module (20), the conveying module (20) being mounted on the frame (11) and used for conveying a plurality of products to be tested (14) to move continuously along a first direction; A pre-welding detection module (30), the pre-welding detection module (30) being arranged on the frame (11), the pre-welding detection module (30) comprising: a first camera component (31) and a product detection component (32), the first camera component (31) being electrically connected to the product detection component (32), the product detection component (32) being used to obtain motion information of the product to be tested (14), and the first camera component (31) being used to obtain a welding surface image of the product to be tested (14) before welding; A welding module (40), wherein the welding module (40) welds the product to be tested (14) according to the welding surface image.

2. The welding device according to claim 1, characterized in that The pre-welding detection module (30) further comprises: a distance measuring component (33), wherein the distance measuring component (33) is used to obtain the welding distance of the product to be tested (14) and the pre-welding gap value of the connecting piece of the product to be tested (14).

3. The welding device according to claim 1, characterized in that Also includes: A post-weld detection module (50) is used to obtain welding information of a welded surface of the product to be tested (14) after welding, and to determine whether welding quality meets requirements based on the welding information.

4. The welding device according to claim 3, characterized in that: The post-weld inspection module (50) comprises: a second camera component (51), wherein the second camera component (51) is used to obtain an image of a welded surface of the product to be inspected (14) after welding.

5. The welding device according to claim 4, characterized in that The post-weld inspection module (50) further comprises: an AI processor, the AI ​​processor being electrically connected to the second camera assembly (51), the AI ​​processor being used to judge whether the welding quality meets the requirements based on the welding surface image after welding.

6. The welding device according to claim 1, characterized in that The welding module (40) comprises: a laser welding component (41) and a deviation correction component (42); the laser welding component (41) is used to emit laser light and weld the product to be tested (14); and the deviation correction component (42) is used to correct the deviation of the laser welding component (41).

7. The welding device according to claim 6, characterized in that The welding module (40) further comprises: a first detection component (43), the first detection component (43) being used to monitor the light emitted by the laser welding component (41); and / or, The welding module (40) further comprises: a second detection component (44), wherein the second detection component (44) is used to monitor the penetration depth of each welding position of the product to be tested (14).

8. The welding device according to claim 1, characterized in that Also includes: A driving mechanism, the driving mechanism being in driving connection with the welding module (40), the driving mechanism being used to drive the welding module (40) and the product to be tested (14) to move synchronously.

9. The welding device according to claim 8, characterized in that The driving mechanism is a welding robot (12), the welding module (40) is connected to the welding robot (12), and the welding robot (12) is used to drive the welding module (40) and the product to be tested (14) to move synchronously.

10. The welding device according to claim 1, characterized in that The conveying module (20) comprises: a driving component and a conveying component, wherein the driving component is used to drive the conveying component to convey the product to be tested (14) to move along a first direction.

11. The welding device according to claim 10, characterized in that The conveying module (20) comprises: a support frame, the support frame is connected to the frame (11), the conveying assembly comprises: a plurality of rollers, the plurality of rollers are arranged on the support frame, and the plurality of rollers are arranged at intervals along a first direction; a plurality of platforms (13) are supported on the plurality of rollers, and the platforms (13) are used to carry the product to be tested (14); The driving assembly is used to drive the multiple rollers to move so as to convey the carrier (13) to move along a first direction.

12. The welding device according to claim 11, characterized in that Also includes: A plurality of clamping assemblies, the clamping assemblies corresponding to the carrier (13) and moving synchronously with the carrier (13), the clamping assemblies being used to clamp the product to be tested (14) onto the carrier (13).

13. A welding method for the welding equipment according to any one of claims 1 to 12, characterized in that: The following steps are involved: S1: The product detection component (32) obtains movement information of the product to be tested (14); S2: the first camera component (31) determines a shooting time according to the motion information, obtains a welding surface image of the product to be tested (14) before welding, and converts the welding surface image into initial coordinates; S3: The pre-welding detection module (30) obtains the welding distance and the pre-welding gap value of the connecting piece of the product to be tested (14); S4: The controller obtains the three-dimensional target coordinates according to the initial coordinates, the welding distance of the product to be tested (14) and the gap value before welding of the connecting piece; S5: The welding module (40) welds the product to be tested (14) according to the target coordinates.

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