Welding equipment

Abstract

The invention relates to welding equipment. The welding equipment comprises a circulation device; the jig is arranged on the circulation device and is conveyed by the circulation device along a preset conveying route; the first feeding device, the second feeding device, the first welding device, the third feeding device and the second welding device are sequentially arranged along a preset conveying route of the circulation device. Wherein the first feeding device and the second feeding device are respectively used for feeding a battery cell and an adapter plate to the passing jig, the first welding device is used for welding a tab of the battery cell on the passing jig and the adapter plate, and the third feeding device is used for feeding a cover plate to the passing jig. The second welding device is used for welding the switching pieces and the cover pieces on the jigs passing through the second welding device.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing equipment, and specifically to a welding equipment. Background Art

[0002] The battery production process generally requires multiple welding steps. For example, the positive and negative electrode adapters must first be welded to the positive and negative tabs of the battery cell, respectively, and then the positive and negative electrode adapters must be installed on the top cover.

[0003] Traditionally, two welding machines are used to weld the adapter and the top cover respectively. During the production process, at the first welding machine, a robot is first used to load the battery cell and the adapter onto the jig on the first welding machine, so that the jig can position the battery cell and the adapter, and then complete the welding, inspection and unloading of the adapter and the battery cell tabs. A material tray is required to transfer the battery cells between the two welding machines. At the second welding machine, a robot is first used to load the battery cell and the top cover onto the jig on the second welding machine, so that the jig can position the battery cell and the top cover, and then complete the welding, inspection and unloading of the top cover and the adapter.

[0004] It can be seen that the battery cells need to be transferred between various jigs many times during the processing, that is, the battery cells need to be loaded, unloaded and positioned repeatedly, which makes it difficult to ensure the positioning accuracy of the battery cells, resulting in a low welding yield. Summary of the Invention

[0005] Based on this, it is necessary to provide a welding device that can improve the welding yield rate in order to solve the above problems.

[0006] A welding device comprising:

[0007] circulation device;

[0008] A jig is provided on the circulation device and is transported by the circulation device along a preset conveying route;

[0009] A first loading device, a second loading device, a first welding device, a third loading device and a second welding device are sequentially arranged along the preset conveying route of the circulation device;

[0010] Among them, the first loading device and the second loading device are respectively used to load the adapter plate and the battery cell onto the jig passing through, the first welding device is used to weld the tabs of the battery cell and the adapter plate on the jig passing through, the third loading device is used to load the cover plate onto the jig passing through, and the second welding device is used to weld the adapter plate and the cover plate on the jig passing through.

[0011] In some embodiments, the welding equipment further includes a blanking device arranged downstream of the second welding device, and the blanking device is used to blank the battery cells, adapter sheets and cover sheets on the jig passing through.

[0012] In some embodiments, the circulation device drives the jig to circulate through the first loading device, the second loading device, the first welding device, the third loading device, the second welding device and the unloading device in sequence.

[0013] In some embodiments, the flow device includes a first conveying line, a second conveying line, a first transfer mechanism, and a second transfer mechanism;

[0014] The first conveyor line is used to convey the jig from its upstream end to its downstream end, and the first transfer mechanism is arranged between the upstream end of the first conveyor line and the downstream end of the second conveyor line, and is used to transfer the jig on the downstream end of the second conveyor line to the upstream end of the first conveyor line; the second conveyor line is used to convey the jig from its upstream end to its downstream end, and the second transfer mechanism is arranged between the downstream end of the first conveyor line and the upstream end of the second conveyor line, and is used to transfer the jig on the downstream end of the first conveyor line to the upstream end of the second conveyor line.

[0015] In some embodiments, the first loading device, the second loading device, and the first welding device are arranged in sequence along the first conveyor line from the upstream end to the downstream end; the third loading device, the second welding device, and the unloading device are arranged in sequence along the second conveyor line from the upstream end to the downstream end.

[0016] In some embodiments, the first loading device is used to load the positive electrode adapter and the negative electrode adapter onto the jig passing through;

[0017] The first welding device includes a positive electrode welding device and a negative electrode welding device arranged along the preset conveying route of the flow device. The positive electrode welding device is used to weld the positive electrode ear and the positive electrode adapter of the battery cell on the passing jig, and the negative electrode welding device is used to weld the negative electrode ear and the negative electrode adapter of the battery cell on the passing jig.

[0018] In some embodiments, the welding equipment includes a rotating station located between the positive electrode welding device and the negative electrode welding device, and the flow device drives the jig to rotate at the rotating station.

[0019] In some embodiments, the jig includes a mother jig, a first sub-jig, and a second sub-jig. The mother jig is used to receive the battery cell, the first sub-jig is used to receive the adapter sheet, and the second sub-jig is used to receive the cover sheet. The first sub-jig and the second sub-jig can be alternately matched with the mother jig.

[0020] In some embodiments, when the first sub-jig is mated with the mother jig, the tabs of the battery cell on the mother jig and the adapters on the first sub-jig are positioned;

[0021] When the second sub-jig is mated with the mother jig, the adapter piece on the mother jig that is welded and fixed to the tab of the battery cell and the cover piece on the second sub-jig are positioned.

[0022] In some embodiments, the fixture further includes a base, the mother fixture is mounted on the base, the base has a first placement position and a second placement position, the mother fixture has a mating position, the first sub-fixture switches between the first placement position and the mating position, and the second sub-fixture switches between the second placement position and the mating position.

[0023] In some embodiments, the mating position of the mother jig is provided with a locating pin, and both the first sub-jig and the second sub-jig are provided with a locating hole capable of cooperating with the locating pin; or

[0024] The mating position of the mother jig is provided with a positioning hole, and the first sub-jig and the second sub-jig are both provided with positioning pins capable of matching with the positioning hole.

[0025] In some embodiments, the mating position of the mother fixture is provided with a magnetic attraction member; or

[0026] The magnetic attraction component is provided on both the first sub-jig and the second sub-jig.

[0027] In some embodiments, the fixture includes a base, a mother fixture, a first sub-fixture and a second sub-fixture, the mother fixture is used to receive the battery cell, the first sub-fixture is used to receive the adapter sheet, and the second sub-fixture is used to receive the cover sheet. The mother fixture is mounted on the base, and the base has a first placement position and a second placement position for respectively placing the first sub-fixture and the second sub-fixture, and the mother fixture has a mating position;

[0028] The welding equipment also includes a first jig picking and placing device and a second jig picking and placing device. The first jig picking and placing device is arranged between the downstream of the unloading device and the upstream of the first loading device. The first jig picking and placing device is used to transfer the first sub-jig located at the first placement position to the matching position; the second jig picking and placing device is arranged between the downstream of the first welding device and the upstream of the second loading device. The second jig picking and placing device is used to transfer the first sub-jig located at the matching position to the first placement position.

[0029] In some embodiments, the welding equipment further includes a third jig picking and placing device and a fourth jig picking and placing device, the third jig picking and placing device is arranged downstream of the second loading device and upstream of the second welding device, the third jig picking and placing device is used to transfer the second sub-jig located at the second placement position to the matching position; the fourth jig picking and placing device is arranged between the downstream of the second welding device and the upstream of the first jig picking and placing device, the fourth jig picking and placing device is used to transfer the second sub-jig located at the matching position to the second placement position.

[0030] In some embodiments, the first jig pick-up and placement device, the second jig pick-up and placement device, the third jig pick-up and placement device, and the fourth jig pick-up and placement device all include a motion drive mechanism and a hooking mechanism, the hooking mechanism including a hooking drive member mounted on a driving end of the motion drive mechanism and two hooks connected to the hooking drive member, and the two hooks have protrusions on sides facing away from each other;

[0031] The first sub-jig and the second sub-jig each have a hollow groove and a first side wall and a second side wall serving as opposite side walls of the hollow groove. The first side wall and the second side wall each have a clamping groove.

[0032] In some embodiments, the hollow groove is used for allowing the two hook claws of the hook mechanism to enter and exit, and the slots on the first side wall and the second side wall are used for allowing the protrusions on the two hook claws to enter and exit respectively.

[0033] The above-mentioned welding equipment utilizes a flow device to convey the jig through the first loading device, the second loading device, the first welding device, the third loading device and the second welding device in sequence, thereby completing the adapter plate loading, battery cell loading, welding of the battery cell's tabs and adapter plates, cover plate loading and welding of the adapter plate and cover plate in sequence, avoiding repeated loading and unloading and positioning actions of the battery cell, ensuring that the positioning accuracy of the battery cell always remains stable, which is conducive to improving the welding yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1This is a structural diagram of a welding device in one embodiment of the present application;

[0035] Figure 2 for Figure 1 The front view of the welding equipment fixture shown (without battery cells loaded);

[0036] Figure 3 for Figure 1 The front view of the welding equipment fixture shown (with battery cells and adapters loaded);

[0037] Figure 4 for Figure 3 A top view of the jig shown;

[0038] Figure 5 for Figure 1 The front view of the welding equipment fixture shown (with battery cells and cover plates loaded);

[0039] Figure 6 for Figure 2 A front view of the first sub-jig of the jig shown;

[0040] Figure 7 for Figure 6 A top view of the first sub-jig is shown;

[0041] Figure 8 for Figure 2 A front view of the second sub-jig of the jig shown;

[0042] Figure 9 for Figure 8 A top view of the second sub-jig is shown;

[0043] Figure 10 for Figure 1 A schematic diagram of the structure of the jig and jig placement device of the welding equipment shown;

[0044] Figure 11 for Figure 10 A side view of the fixture pick-and-place device shown;

[0045] Figure 12 for Figure 11 A top view of the fixture pick-and-place device is shown. DETAILED DESCRIPTION

[0046] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0047] In the description of the present application, 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 application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0049] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0050] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0052] See also Figure 1 The present application provides a welding device, including a circulation device 10, a jig 20, a first loading device 30, a second loading device 40, a first welding device 50, a third loading device 140, and a second welding device 160. The jig 20 is arranged on the circulation device 10, and the circulation device 10 is used to transport the jig 20 along a preset conveying route. The first loading device 30, the second loading device 40, the first welding device 50, the third loading device 140, and the second welding device 160 are arranged in sequence along the preset conveying route of the circulation device 10, so that the circulation device 10 can transport the jig 20 thereon through the first loading device 30, the second loading device 40, the first welding device 50, the third loading device 140, and the second welding device 160 in sequence. When the jig 20 arrives at the first loading device 30, the first loading device 30 loads the adapter sheet a2 onto the jig 20. When the jig 20 reaches the second loading device 40, the second loading device 40 loads the battery cell a1 onto the jig 20, thereby using the jig 20 to position the tabs of the battery cell a1 and the adapter a2. When the jig 20 reaches the first welding device 50, the first welding device 50 welds the tabs of the battery cell a1 to the adapter a2. When the jig 20 reaches the third loading device 140, the third loading device 140 loads the cover a3 onto the jig 20, allowing the jig 20 to position the adapter a2 and the cover a3. When the jig 20 reaches the second welding device 160, the second welding device 160 welds the adapter a2 and the cover a3 on the jig 20, thereby welding and fixing the battery cell a1, the adapter a2, and the cover a3 into a whole.

[0053] In this way, the flow device 10 is used to transport the jig 20 through the first loading device 30, the second loading device 40, the first welding device 50, the third loading device 140 and the second welding device 160 in sequence, thereby completing the loading of the adapter plate a2, the loading of the battery cell a1, the welding of the tab of the battery cell a1 and the adapter plate a2, the loading of the cover plate a3 and the welding of the adapter plate a2 and the cover plate a3 in sequence, avoiding repeated loading and unloading and positioning actions of the battery cell a1, ensuring that the positioning accuracy of the battery cell a1 always remains stable, which is conducive to improving the welding yield.

[0054] It should be noted that compared with the two welding devices used in the prior art, the welding device in this application integrates the welding process of the battery cell a1's tab and the adapter plate a2 and the welding process of the adapter plate a2 and the cover plate a3, thereby reducing the number of devices and further reducing the required space.

[0055] Compared with the prior art in which different jigs are used to position the battery cells at different welding stations, the present application always uses the same jig 20 to position the battery cell a1 at each station, which greatly reduces the number of jigs 20, avoids positioning deviations caused by replacing the jigs 20, and is conducive to improving the welding yield.

[0056] In an embodiment of the present application, the first loading device 30 is used to load the positive electrode adapter sheet and the negative electrode adapter sheet onto the passing jig 20. The first welding device 50 includes a positive electrode welding device 51 and a negative electrode welding device 53 arranged along the preset conveying line of the circulation device 10. The positive electrode welding device 51 is used to weld the positive electrode tab and the positive electrode adapter sheet of the battery cell a1 on the passing jig 20. The negative electrode welding device 53 is used to weld the negative electrode tab and the negative electrode adapter sheet of the battery cell a1 on the passing jig 20. It should be noted that the positive electrode welding device 51 can be arranged upstream of the negative electrode welding device 53, or it can be arranged downstream of the negative electrode welding device 53, which is not limited here. For ease of understanding, the following description will be given as an example in which the positive electrode welding device 51 is arranged upstream of the negative electrode welding device 53.

[0057] Thus, when the circulation device 10 transports the jig 20 to the positive electrode welding device 51, the positive electrode welding device 51 welds the positive tab of the battery cell a1 on the jig 20 to the positive electrode adapter. When the circulation device 10 transports the jig 20 to the negative electrode welding device 53, the negative electrode welding device 53 welds the negative tab on the jig 20 to the negative electrode adapter.

[0058] Furthermore, the first loading device 30 loads the positive and negative electrode adapter sheets onto the jig 20, and the second loading device 40 loads the two battery cells a1 onto the jig 20 in transit. The two battery cells a1 each have a positive tab and a negative tab on their sides facing each other. The two positive tabs of the two battery cells a1 face each other, and the two negative tabs of the two battery cells a1 face each other. The jig 20 is used to position the positive electrode adapter sheet against the positive tabs of the two battery cells a1, and the jig 20 is used to position the negative electrode adapter sheet against the negative tabs of the two battery cells a1.

[0059] There are two positive electrode welding devices 51, and the two positive electrode welding devices 51 are arranged at intervals along the preset conveying route of the circulation device 10. When the circulation device 10 conveys the jig 20 to the first positive electrode welding device 51, the first positive electrode welding device 51 welds the positive electrode ear and the positive electrode adapter of the first battery cell a1 on the jig 20. When the circulation device 10 conveys the jig 20 to the second positive electrode welding device 51, the second positive electrode welding device 51 welds the positive electrode ear and the positive electrode adapter of the second battery cell a1 on the jig 20. In this way, the two positive electrode welding devices 51 are used to respectively weld the positive electrode ears and the positive electrode adapter of the two battery cells a1 on the jig 20, so that the positive electrode ears of the two battery cells a1 on the jig 20 are electrically connected to the positive electrode adapter.

[0060] There are two negative electrode welding devices 53, and the two negative electrode welding devices 53 are arranged at intervals along the preset conveying route of the circulation device 10. When the circulation device 10 conveys the jig 20 to the first negative electrode welding device 53, the first negative electrode welding device 53 welds the negative electrode ear and the negative electrode adapter of the first battery cell a1 on the jig 20. When the circulation device 10 conveys the jig 20 to the second negative electrode welding device 53, the second negative electrode welding device 53 welds the negative electrode ear and the negative electrode adapter of the second battery cell a1 on the jig 20. In this way, the two negative electrode welding devices 53 are used to weld the negative electrode ears and the negative electrode adapter of the two battery cells a1 on the jig 20 respectively, so that the negative electrode ears of the two battery cells a1 on the jig 20 are electrically connected to the negative electrode adapter.

[0061] It should be noted that the two positive electrode welding devices 51 and the two negative electrode welding devices 53 are arranged on the same side of the preset conveying route of the circulation device 10. Therefore, when the circulation device 10 conveys the jig 20 to the positive electrode welding device 51, the positive tabs of the two battery cells a1 on the jig 20 (compared to the negative tabs) are closer to the positive electrode welding device 51, facilitating the positive electrode welding device 51 to weld the positive tabs of the battery cells a1 to the positive electrode adapter. Specifically, in this embodiment, the welding equipment also includes a rotation station 52 located between the two positive electrode welding devices 51 and the two negative electrode welding devices 53. At the rotation station 52, the circulation device 10 drives the jig 20 to rotate approximately 180 degrees. Therefore, when the circulation device 10 conveys the jig 20 to the negative electrode welding device 53, the negative tabs of the two battery cells a1 on the jig 20 (compared to the positive tabs) are closer to the negative electrode welding device 53, facilitating the negative electrode welding device 53 to weld the negative tabs of the battery cells a1 to the negative electrode adapter.

[0062] Specific to Figure 1In the illustrated embodiment, two positive electrode welding devices 51 and two negative electrode welding devices 53 are arranged on the left side of the preset conveying route of the circulation device 10. When the circulation device 10 conveys the jig 20 to any positive electrode welding device 51, the positive electrode tab of the battery cell a1 on the jig 20 is located to the left of the negative electrode tab, that is, the positive electrode tab of the battery cell a1 on the jig 20 is closer to the positive electrode welding device 51 than the negative electrode tab, so that the positive electrode welding device 51 can weld the positive electrode tab of the battery cell a1 on the jig 20 to the positive electrode adapter. When the circulation device 10 conveys the jig 20 to the rotating station 52, the circulation device 10 drives the jig 20 that has arrived at the rotating station 52 to rotate 180°, so that the negative electrode tab of the battery cell a1 on the jig 20 is located to the left of the positive electrode tab. When the circulation device 10 transports the jig 20 to the negative electrode welding device 53, the negative electrode ear of the battery cell a1 on the jig 20 is closer to the negative electrode welding device 53 than the positive electrode ear, so that the negative electrode welding device 53 can weld the negative electrode ear of the battery cell a1 on the jig 20 with the negative electrode adapter.

[0063] Specifically, in this embodiment, the welding equipment further includes a first dust removal device 60, which is disposed between the downstream of the negative electrode welding device 53 and the upstream of the third loading device 140. When the flow device 10 conveys the jig 20 to the first dust removal device 60, the first dust removal device 60 removes dust from the battery cell a1 and the adapter a2 on the jig 20 to remove dust and other dirt generated during the welding of the tabs of the battery cell a1 and the adapter a2, ensuring that the cleanliness of the battery cell a1 and the adapter a2 meets the process requirements.

[0064] Specifically, in this embodiment, the welding equipment further includes a first visual inspection device 80, which is arranged between the downstream of the first dust removal device 60 and the upstream of the third loading device 140. When the flow device 10 conveys the jig 20 to the first visual inspection device 80, the first visual inspection device 80 visually inspects the weld marks at the welding point between the tab of the battery cell a1 and the adapter a2 on the jig 20 passing by to determine whether there are any welding abnormalities.

[0065] Specifically, in the embodiment, the welding equipment further includes a first weld-mark gluing device 90, a second weld-mark gluing device 100, a third weld-mark gluing device 110, and a fourth weld-mark gluing device 120. The first weld-mark gluing device 90, the second weld-mark gluing device 100, the third weld-mark gluing device 110, and the fourth weld-mark gluing device 120 are arranged sequentially along the preset conveying route of the circulation device 10, and are all located between the downstream of the first visual inspection device 80 and the upstream of the third loading device 140. When the circulation device 10 conveys the jig 20 to the first weld-mark gluing device 90, the first weld-mark gluing device 90 applies tape to the weld mark between the negative tab and the negative electrode adapter of one of the battery cells a1. When the circulation device 10 conveys the jig 20 to the second weld-mark gluing device 100, the second weld-mark gluing device 100 applies tape to the weld mark between the negative tab and the negative electrode adapter of another battery cell a1.

[0066] When the jig 20 transported by the circulation device 10 reaches the third welding and gluing device 110, the third welding and gluing device 110 applies the tape to the weld mark between the positive tab and the positive electrode adapter of one of the battery cells a1. When the jig 20 transported by the circulation device 10 reaches the fourth welding and gluing device 120, the fourth welding and gluing device 120 applies the tape to the weld mark between the positive tab and the positive electrode adapter of another battery cell a1.

[0067] Specifically, in this embodiment, the welding equipment further includes a second visual inspection device 130, which is arranged between the downstream of the fourth soldering and gluing device 120 and the upstream of the third loading device 140. When the flow device 10 conveys the jig 20 to the second visual inspection device 130, the second visual inspection device 130 visually inspects the tape on the battery cell a1 on the jig 20 passing by to determine whether there is any gluing anomaly.

[0068] Specifically, in this embodiment, the welding apparatus further includes a blanking device 210 disposed downstream of the second welding device 160. This blanking device 210 is used to blank the battery cell a1, adapter plate a2, and cover plate a3 as a whole from the jig 20 passing through it. Thus, when the transfer device 10 transports the jig 20 to the blanking device 210, the tabs of the battery cell a1 on the jig 20 have already been welded to the adapter plate a2, and the adapter plate a2 has also been welded to the cover plate a3. The blanking device 210 then blanks the battery cell a1, adapter plate a2, and cover plate a3 as a whole.

[0069] Specifically, in the embodiment, the welding equipment further includes a second dust removal device 170, which is arranged between the downstream of the second welding device 160 and the upstream of the unloading device 210. When the flow device 10 transports the jig 20 to the second dust removal device 170, the second dust removal device 170 removes dust from the battery cell a1, the adapter sheet a2, and the cover sheet a3 on the jig 20 to remove dust and other dirt generated during the welding of the adapter sheet a2 and the cover sheet a3, thereby ensuring that the cleanliness of the battery cell a1, the adapter sheet a2, and the cover sheet a3 meets the process requirements.

[0070] Specifically, in this embodiment, the welding equipment further includes a third visual inspection device 180, which is disposed between the downstream of the second dust removal device 170 and the upstream of the unloading device 210. When the flow device 10 conveys the jig 20 to the third visual inspection device 180, the third visual inspection device 180 visually inspects the weld marks at the weld between the adapter sheet a2 and the cover sheet a3 on the jig 20 passing through to determine whether there are any welding anomalies.

[0071] Specifically, in this embodiment, the welding equipment further includes a fifth weld mark gluing device 190. This fifth weld mark gluing device 190 is arranged between the downstream of the third visual inspection device 180 and the upstream of the unloading device 210. When the flow device 10 conveys the jig 20 to the fifth weld mark gluing device 190, the fifth weld mark gluing device 190 applies tape to the weld marks of the adapter sheet a2 and the cover sheet a3.

[0072] Specifically, in this embodiment, the welding apparatus further includes a third dust removal device 220. This third dust removal device 220 is positioned downstream of the unloading device 210. When the flow device 10 delivers the jig 20 to the third dust removal device 220, the third dust removal device 220 removes dust from the jig 20 passing through it, ensuring that the cleanliness of the jig 20 meets process requirements.

[0073] Furthermore, the circulation device 10 drives the jig 20 to circulate in sequence through the first loading device 30, the second loading device 40, the two positive electrode welding devices 51, the rotating station 52, the two negative electrode welding devices 53, the first dust removal device 60, the first visual inspection device 80, the first weld print and glue device 90, the second weld print and glue device 100, the third weld print and glue device 110, the fourth weld print and glue device 120, the second visual inspection device 130, the third loading device 140, the second welding device 160, the second dust removal device 170, the third visual inspection device 180, the fifth weld print and glue device 190, the unloading device 210 and the third dust removal device 220. That is to say, after the jig 20 arrives at the third dust removal device 220 for dust removal, the circulation device 10 continues to transport the jig 20 and passes through the first loading device 30, the second loading device 40, the two positive electrode welding devices 51, the rotating station 52, the two negative electrode welding devices 53, the first dust removal device 60, the first visual inspection device 80, the first weld print and glue device 90, the second weld print and glue device 100, the third weld print and glue device 110, the fourth weld print and glue device 120, the second visual inspection device 130, the third loading device 140, the second welding device 160, the second dust removal device 170, the third visual inspection device 180, the fifth weld print and glue device 190, the unloading device 210 and the third dust removal device 220 in sequence, so as to realize the continuous welding operation of the batch battery a1.

[0074] Furthermore, a plurality of jigs 20 are provided, and the plurality of jigs 20 are all provided on the circulation device 10. The circulation device 10 drives the various jigs 20 thereon to circulate in sequence through the first loading device 30, the second loading device 40, the two positive electrode welding devices 51, the rotating station 52, the two negative electrode welding devices 53, the first dust removal device 60, the first visual inspection device 80, the first weld print and glue device 90, the second weld print and glue device 100, the third weld print and glue device 110, the fourth weld print and glue device 120, the second visual inspection device 130, the third loading device 140, the second welding device 160, the second dust removal device 170, the third visual inspection device 180, the fifth weld print and glue device 190, the unloading device 210 and the third dust removal device 22 0, so that the first loading device 30, the second loading device 40, the two positive electrode welding devices 51, the rotating station 52, the two negative electrode welding devices 53, the first dust removal device 60, the first visual inspection device 80, the first weld print and glue device 90, the second weld print and glue device 100, the third weld print and glue device 110, the fourth weld print and glue device 120, the second visual inspection device 130, the third loading device 140, the second welding device 160, the second dust removal device 170, the third visual inspection device 180, the fifth weld print and glue device 190, the unloading device 210 and the third dust removal device 220 can simultaneously perform corresponding processes, thereby greatly improving production efficiency.

[0075] Specifically in the embodiment, the flow device 10 includes a first conveyor line 11, a second conveyor line 12, a first transfer mechanism 13 and a second transfer mechanism 14. The first conveyor line 11 is used to convey the jig 20 from its upstream end to its downstream end. The first transfer mechanism 13 is arranged between the upstream end of the first conveyor line 11 and the downstream end of the second conveyor line 12, and is used to transfer the jig 20 on the downstream end of the second conveyor line 12 to the upstream end of the first conveyor line 11. The second conveyor line 12 is used to convey the jig 20 from its upstream end to its downstream end. The second transfer mechanism 14 is arranged between the downstream end of the first conveyor line 11 and the upstream end of the second conveyor line 12, and is used to transfer the jig 20 on the downstream end of the first conveyor line 11 to the upstream end of the second conveyor line 12.

[0076] In this way, the jig 20 is transported from the upstream end of the first conveyor line 11 to the downstream end of the first conveyor line 11, and then the second transfer mechanism 14 is used to translate the jig 20 at the downstream end of the first conveyor line 11 to the upstream end of the second conveyor line 12. The jig 20 is then transported from the upstream end of the second conveyor line 12 to the downstream end of the second conveyor line 12, and then the first transfer mechanism 13 is used to translate the jig 20 from the downstream end of the second conveyor line 12 to the upstream end of the first conveyor line 11, thereby realizing the cyclic conveyance of the jig 20 between the first conveyor line 11 and the second conveyor line 12.

[0077] Furthermore, the first loading device 30, the second loading device 40, the two positive electrode welding devices 51, the rotating station 52, the two negative electrode welding devices 53, the first dust removal device 60, the first visual inspection device 80, the first weld print and glue device 90 and the second weld print and glue device 100 are arranged in sequence from the upstream end to the downstream end of the first conveyor line 11, so that the jig 20 on the first conveyor line 11 passes through the first loading device 30, the second loading device 40, the two positive electrode welding devices 51, the rotating station 52, the two negative electrode welding devices 53, the first dust removal device 60, the first visual inspection device 80, the first weld print and glue device 90 and the second weld print and glue device 100 in sequence during the process of being conveyed from the upstream end to the downstream end.

[0078] The third weld stamp gluing device 110, the fourth weld stamp gluing device 120, the second visual inspection device 130, the third loading device 140, the second welding device 160, the second dust removal device 170, the third visual inspection device 180, the fifth weld stamp gluing device 190, the unloading device 210 and the third dust removal device 220 are arranged in sequence from the upstream end to the downstream end of the second conveyor line 12, so that the fixture 20 on the second conveyor line 12 passes through the third weld stamp gluing device 110, the fourth weld stamp gluing device 120, the second visual inspection device 130, the third loading device 140, the second welding device 160, the second dust removal device 170, the third visual inspection device 180, the fifth weld stamp gluing device 190, the unloading device 210 and the third dust removal device 220 in sequence during the process of being conveyed from the upstream end to the downstream end.

[0079] Specific to Figure 1 In the illustrated embodiment, the direction from the upstream end to the downstream end of the first conveyor line 11 and the direction from the upstream end to the downstream end of the second conveyor line 12 are both parallel to the first direction X1. The first conveyor line 11 and the second conveyor line 12 are arranged at intervals along a second direction X2 that is perpendicular to the first direction X1. The two battery cells a1 on the fixture 20 on the first conveyor line 11 are arranged opposite each other along the first direction X1. The two battery cells a1 have positive and negative tabs on the sides facing each other. The positive and negative tabs on each battery cell a1 are arranged at intervals along the second direction X2.

[0080] See Figures 2 to 5 In an embodiment of the present application, the jig 20 includes a mother jig 21, a first sub-jig 23, and a second sub-jig 25. The mother jig 21 is used to receive the battery cell a1, the first sub-jig 23 is used to receive the adapter a2, and the second sub-jig 25 is used to receive the cover a3. The first sub-jig 23 and the second sub-jig 25 can be alternately mated with the mother jig 21. Furthermore, when the first sub-jig 23 is mated with the mother jig 21, the tabs of the battery cell a1 on the mother jig 21 are positioned with the adapter a2 on the first sub-jig 23, so that the first welding device 50 can weld the tabs to the adapter a2. When the second sub-jig 25 is mated with the mother jig 21, the adapter a2 on the mother jig 21, which is welded and fixed to the tabs of the battery cell a1, and the cover a3 on the second sub-jig 25 are positioned, so that the second welding device 160 can weld the adapter a2 to the cover a3.

[0081] In this way, before the jig 20 reaches the first welding device 50, the first sub-jig 23 is switched to mate with the mother jig 21, and the mother jig 21 is used to receive the battery cell a1 transferred by the second loading device 40, and the first sub-jig 23 is used to receive the adapter plate a2 transferred by the first loading device 30, thereby achieving the positioning of the tabs of the battery cell a1 and the adapter plate a2, so that when the jig 20 reaches the first welding device 50, the first welding device 50 can weld the tabs of the battery cell a1 and the adapter plate a2. Similarly, before the jig 20 reaches the second welding device 160, the first sub-jig 23 is switched to separate from the mother jig 21, and the second sub-jig 25 is switched to mate with the mother jig 21, and the second sub-jig 25 is used to receive the cover piece a3 transferred by the third loading device 140, thereby realizing the positioning of the adapter piece a2 and the cover piece a3, so that when the jig 20 reaches the second welding device 160, the second welding device 160 can weld the adapter piece a2 and the cover piece a3.

[0082] It should be noted that, compared with the prior art in which different jigs are used to position the battery cells at different welding stations, in the present application, the mother jig 21, the first sub-jig 23 and the second sub-jig 25 of the same jig 20 are always used at each station to position the battery cell a1, the adapter a2 and the cover plate a3 respectively, which greatly reduces the number of jigs 20, avoids the positioning deviation caused by replacing the jig 20, and is conducive to improving the welding yield.

[0083] Specifically in the embodiment, the jig 20 also includes a base 27, which is arranged on the circulation device 10, and the mother jig 21 is installed on the base 27. The base 27 has a first placement position A2 and a second placement position A3, and the mother jig 21 has a matching position A1. Specifically, the first placement position A2 and the second placement position A3 are arranged at intervals along the first direction X1. The first sub-jig 23 switches between the first placement position A2 and the matching position A1. The second sub-jig 25 switches between the second placement position A3 and the matching position A1. In this way, before welding the tab of the battery cell a1 and the adapter a2, the second sub-jig 25 is placed on the second placement position A3, and the first sub-jig 23 is switched to the matching position A1 of the mother jig 21, that is, the first sub-jig 23 is matched with the mother jig 21. Before welding the adapter plate a2 and the cover plate a3 , the first sub-jig 23 is placed on the first placement position A2 , and the second sub-jig 25 is switched to the matching position A1 of the mother jig 21 , that is, the second sub-jig 25 is matched with the mother jig 21 .

[0084] Specifically in the embodiment, the mating position A1 on the mother fixture 21 is provided with a positioning pin 212, and the first sub-jig 23 and the second sub-jig 25 are both provided with a positioning hole A5 (see Figure 7 or Figure 9). In this way, when the first sub-jig 23 is transferred from the first placement position A2 to the matching position A1 on the mother jig 21, the positioning pin 212 on the mother jig 21 is plugged into the positioning hole A5 on the first sub-jig 23, thereby achieving the positioning of the mother jig 21 and the first sub-jig 23, ensuring the positioning of the tabs of the battery cell a1 and the adapter a2. When the first sub-jig 23 is transferred from the matching position A1 to the first placement position A2, the positioning pin 212 on the mother jig 21 is separated from the positioning hole A5 on the first sub-jig 23. When the second sub-jig 25 is transferred from the second placement position A3 to the matching position A1 on the mother jig 21, the positioning pin 212 on the mother jig 21 is plugged into the positioning hole A5 on the second sub-jig 25, thereby achieving the positioning of the mother jig 21 and the second sub-jig 25, ensuring the positioning of the adapter a2 and the cover a3. When the second sub-jig 25 is transferred from the matching position A1 to the second placement position A3 , the positioning pins 212 on the mother jig 21 are separated from the positioning holes A5 on the second sub-jig 25 .

[0085] It should be noted that the positioning pins 212 are not limited to being provided on the mother jig 21, and the positioning holes A5 are not limited to being provided on the first sub-jig 23 and the second sub-jig 25. In other embodiments, the positioning pins 212 can also be installed on the first sub-jig 23 and the second sub-jig 25, and the positioning holes A5 can be provided at the mating position A1 of the mother jig 21, as long as the first sub-jig 23 or the second sub-jig 25 can be positioned with the mother jig 21 when transferred to the mating position A1.

[0086] Specifically in the embodiment, the mating position A1 of the mother jig 21 is provided with a magnetic component 213, so that the magnetic component 213 is used to absorb and fix the first sub-jig 23 or the second sub-jig 25 transferred to the mating position A1 to prevent the first sub-jig 23 or the second sub-jig 25 from falling off the mother jig 21.

[0087] It should be noted that the magnetic element 213 is not limited to being provided on the mother fixture 21. In other embodiments, the magnetic element 213 may also be provided on the first sub-fixture 23 and the second sub-fixture 25. Thus, when the first sub-fixture 23 is transferred to the mating position A1, the first sub-fixture 23 is fixed to the mother fixture 21 using its own magnetic element 213. When the second sub-fixture 25 is transferred to the mating position A1, the second sub-fixture 25 is fixed to the mother fixture 21 using its own magnetic element 213.

[0088] In the embodiment of the present application, the welding equipment further includes a first fixture pick-up and placement device 230 and a second fixture pick-up and placement device 70. The first fixture pick-up and placement device 230 is arranged between the downstream of the unloading device 210 and the upstream of the first loading device 30. Figure 1In the illustrated embodiment, the first jig placement device 230 is arranged between the unloading device 210 and the downstream end of the second conveyor line 12. The first jig placement device 230 is used to transfer the first sub-jig 23 located at the first placement position A2 on the base 27 to the matching position A1 of the mother jig 21. A second jig placement device 70 is provided between the downstream of the first dust removal device 60 and the upstream of the first soldering and gluing device 90. The second jig placement device 70 is used to transfer the first sub-jig 23 located at the matching position A1 of the mother jig 21 to the first placement position A2 on the base 27. In this way, when the circulation device 10 transports the jig 20 to the first jig placement device 230, the first jig placement device 230 transfers the first sub-jig 23 at the first placement position A2 to the matching position A1 of the mother jig 21. When the transfer device 10 transports the jig 20 to the second jig placement device 70 , the second jig placement device 70 transfers the first sub-jig 23 on the matching position A1 of the mother jig 21 to the first placement position A2 of the base 27 .

[0089] Specifically, in this embodiment, the welding equipment further includes a third jig placement device 150 and a fourth jig placement device 200. The third jig placement device 150 is positioned downstream of the second visual inspection device 130 and upstream of the second welding device 160. The third jig placement device 150 is used to transfer the second sub-jig 25 located at the second placement position A3 on the base 27 to the mating position A1 of the mother jig 21. The fourth jig placement device 200 is positioned downstream of the fifth soldering and gluing device 190 and upstream of the third dust removal device 220. The fourth jig placement device 200 is used to transfer the second sub-jig 25 located at the mating position A1 of the mother jig 21 to the second placement position A3 on the base 27. Thus, when the flow device 10 transports the jig 20 to the third jig placement device 150, the third jig placement device 150 transfers the second sub-jig 25 located at the second placement position A3 to the mating position A1 of the mother jig 21. When the flow device 10 transports the jig 20 to the fourth jig placement device 200 , the fourth jig placement device 200 transfers the second sub-jig 25 on the matching position A1 of the mother jig 21 to the second placement position A3 of the base 27 .

[0090] It should be noted that the specific structures of the first jig placement device 230, the second jig placement device 70, the third jig placement device 150, and the fourth jig placement device 200 are similar, and the following description uses one of them as an example. In other words, the jig placement device 300 described below can be any one of the first jig placement device 230, the second jig placement device 70, the third jig placement device 150, and the fourth jig placement device 200.

[0091] See Figures 6 to 12Specifically, in this embodiment, the fixture pick-up and placement device 300 includes a motion drive mechanism 301 and a hook mechanism 401. The hook mechanism 401 includes a hook drive member 403 and two hook claws 405. The hook drive member 403 is mounted on the driving end of the motion drive mechanism 301. The two hook claws 405 are connected to the hook drive member 403 and have protrusions 407 on the sides facing away from each other.

[0092] Both the first and second sub-jigs 23 and 25 have a hollowed-out slot A4 and first and second sidewalls A41 and A42 that serve as opposing walls of the hollowed-out slot A4. Each of the first and second sidewalls A41 and A42 has a latching slot A43. Specifically, the hollowed-out slots A4 of the first and second sub-jigs 23 and 25 allow the two hooks 405 of the hook mechanism 401 to enter and exit, while the latching slots A43 on the first and second sidewalls A41 and A42 allow the protrusions 407 on the two hooks 405 of the hook mechanism 401 to enter and exit, respectively.

[0093] Thus, when the first sub-jig 23 or the second sub-jig 25 needs to be transferred to the mating position A1 of the mother jig 21, the motion drive mechanism 301 first drives the hook mechanism 401 to move until the two hooks 405 are inserted into the hollow grooves A4 of the first sub-jig 23 or the second sub-jig 25. Then, the hook drive member 403 drives the two hooks 405 to move away from each other until the protrusions 407 on the two hooks 405 enter the slots A43 on the first side wall A41 and the second side wall A42, respectively, so that the two hooks 405 are connected to the first sub-jig 23 or the second sub-jig 25. Then, the motion drive mechanism 301 drives the hook mechanism 401 to move until the first sub-jig 23 or the second sub-jig 25 follows the two hooks 405 and moves to the mating position A1 of the mother jig 21. At this point, the first sub-jig 23 or the second sub-jig 25 is positioned using the positioning pins 212 and fixed to the mother jig 21 using the magnetic element 213. Next, the hooking drive 403 drives the two hooks 405 to move toward each other, causing the protrusions 407 on the two hooks 405 to exit the slots A43 on the first side wall A41 and the second side wall A42, respectively, thereby separating the two hooks 405 from the first sub-jig 23 or the second sub-jig 25. Next, the motion drive mechanism 301 drives the hooking mechanism 401 to move, causing the two hooks 405 of the hooking mechanism 401 to exit the hollow slots A4 of the first sub-jig 23 or the second sub-jig 25.

[0094] It should be noted that the process of using the hooking mechanism 401 to transfer the first sub-jig 23 or the second sub-jig 25 located at the matching position A1 to the first placement position A2 or the second placement position A3 is similar to the above process and will not be described in detail here.

[0095] Specifically in the embodiment, the motion drive mechanism 301 is used to drive the hooking mechanism 401 to move along the second direction X2 and the third direction X3, and the first side wall A41 and the second side wall A42 of the first sub-jig 23 or the second sub-jig 25 are arranged relative to each other along the first direction X1. Preferably, the first direction X1, the second direction X2 and the third direction X3 are perpendicular to each other. When it is necessary to transfer the first sub-jig 23 or the second sub-jig 25 to the matching position A1 of the mother jig 21, the flow device 10 conveys the jig 20 to move along the first direction X1, and the motion drive mechanism 301 drives the hooking mechanism 401 to move along the third direction X3 until the two hook claws 405 of the hooking mechanism 401 are aligned with the hollow groove A4 of the first sub-jig 23 or the second sub-jig 25 in the second direction X2. Then, the motion drive mechanism 301 drives the hooking mechanism 401 to move along the second direction X2, causing the two hooks 405 to insert into the hollow slots A4 of the first sub-jig 23 or the second sub-jig 25 along the second direction X2. Then, the hooking drive member 403 drives the two hooks 405 to move away from each other along the first direction X1 until the protrusions 407 on the two hooks 405 insert into the slots A43 on the first side wall A41 and the second side wall A42, respectively. Then, the motion drive mechanism 301 drives the hooking mechanism 401 to move along the third direction X3, and the conveying jig 20 of the circulation device 10 moves along the first direction X1 until the mating positions A1 of the first sub-jig 23 or the second sub-jig 25 on the two hooks 405 are aligned with the mother jig 21 in the third direction X3 (i.e., the locating pins 212 on the mother jig 21 are aligned with the locating holes A5 on the first sub-jig 23 or the second sub-jig 25 in the third direction X3). Next, the motion drive mechanism 301 drives the hook mechanism 401 to move along the first direction X1 toward the mating position A1 of the mother jig 21, until the first sub-jig 23 or the second sub-jig 25 is docked with the mating position A1 of the mother jig 21. At this point, the first sub-jig 23 or the second sub-jig 25 is attracted and fixed to the mother jig 21 by the magnetic element 213, and the mother jig 21 and the first sub-jig 23 or the second sub-jig 25 are positioned using the positioning pins 212. Next, the hook drive member 403 drives the two hooks 405 to move toward each other along the first direction X1 until the protrusions 407 on the two hooks 405 are respectively removed from the slots A43 on the first side wall A41 and the second side wall A42. Then, the motion drive mechanism 301 drives the hooking mechanism 401 to move along the second direction X2, so that the two hook claws 405 of the hooking mechanism 401 withdraw from the hollow groove A4 of the first sub-jig 23 or the second sub-jig 25, thereby completing the transfer of the first sub-jig 23 or the second sub-jig 25 to the matching position A1 of the mother jig 21.

[0096] Specifically, the motion drive mechanism 301 includes a first drive module 303, a first transfer carrier 305, a second drive module 307, and a second transfer carrier 309. The first transfer carrier 305 is mounted on the first drive module 303, enabling the first drive module 303 to drive the first transfer carrier 305 to move in the second direction X2. The second drive module 307 is mounted on the first transfer carrier 305, and the second transfer carrier 309 is mounted on the second drive module 307, enabling the second drive module 307 to drive the second transfer carrier 309 to move in the third direction X3. The hook mechanism 401 is mounted on the second transfer carrier 309, enabling the hook mechanism 401 to move along with the second transfer carrier 309 in the second direction X2 and the third direction X3.

[0097] It should be noted that the first driving module 303 can be a linear module, as long as it can drive the first transfer base 305 to move along the first direction X1, and there is no limitation here. The second driving module 307 can be a linear module, as long as it can drive the second transfer base 309 to move along the third direction X3, and there is no limitation here.

[0098] It should also be noted that since two battery cells a1 need to be loaded on the jig 20 at the same time, the jig 20 includes two mother jigs 21. The two mother jigs 21 are arranged relative to each other along the first direction X1, and the ends of the two mother jigs 21 close to each other jointly form the above-mentioned mating position A1. Both mother jigs 21 are provided with positioning pins 212 and magnetic parts 213, and both the first sub-jig 23 and the second sub-jig 25 have two positioning holes A5. When the first sub-jig 23 or the second sub-jig 25 is transferred to the mating position A1 of the two mother jigs 21, the positioning pins 212 on the two mother jigs 21 are respectively inserted into the two positioning holes A5 of the first sub-jig 23 or the second sub-jig 25, thereby realizing the positioning of the two mother jigs 21 and the first sub-jig 23 or the second sub-jig 25. At the same time, the magnetic elements 213 on the two mother jigs 21 simultaneously adsorb and fix the first sub-jig 23 or the second sub-jig 25 , ensuring that the first sub-jig 23 or the second sub-jig 25 is adsorbed and fixed on the two mother jigs 21 .

[0099] The following combination Figure 1 Explain the welding operation process of welding equipment:

[0100] The first conveyor line 11 conveys the jig 20 from its upstream end to the first loading device 30. At this time, the first sub-jig 23 of the jig 20 is located on the matching position A1 of the mother jig 21. The first loading device 30 loads the positive electrode adapter and the negative electrode adapter onto the first sub-jig 23. The first conveyor line 11 continues to convey the jig 20 to the second loading device 40. The second loading device 40 loads the two battery cells a1 onto the two mother jigs 21 of the jig 20 respectively. At this time, the positive tabs of the battery cells a1 on the two mother jigs 21 are positioned with the positive electrode adapter on the first sub-jig 23, and the negative tabs of the battery cells a1 on the two mother jigs 21 are positioned with the negative electrode adapter on the second sub-jig 25.

[0101] The first conveyor line 11 continues to convey the jig 20 through two positive electrode welding devices 51 in sequence. The first positive electrode welding device 51 welds the positive electrode ear and the positive electrode adapter of the battery cell a1 on one of the mother jigs 21 of the jig 20, and the second positive electrode welding device 51 welds the positive electrode ear and the positive electrode adapter of the battery cell a1 on the other mother jig 21 of the jig 20.

[0102] The first conveyor line 11 continues to convey the jig 20 to the rotation station 52 , at which time the first conveyor line 11 drives the jig 20 to rotate 180°.

[0103] The first conveyor line 11 continues to convey the jig 20 through two negative electrode welding devices 53 in sequence. The first negative electrode welding device 53 welds the negative electrode ear and the negative electrode adapter of the battery cell a1 on one of the mother jigs 21 of the jig 20, and the second negative electrode welding device 53 welds the negative electrode ear and the negative electrode adapter of the battery cell a1 on the other mother jig 21 of the jig 20.

[0104] The first conveyor line 11 continues to convey the jig 20 to the first dust removal device 60 , and the first dust removal device 60 removes dust from the battery cells a1 and the adapter a2 on the jig 20 .

[0105] The first conveyor line 11 continues to convey the jig 20 to the first visual inspection device 80 and the second jig placement device 70. The first visual inspection device 80 performs visual inspection on the battery cell a1 and the adapter a2 on the jig 20 to determine whether there are welding defects; the second jig placement device 70 transfers the first sub-jig 23 from the matching position A1 to the first placement position A2.

[0106] The first conveyor line 11 continues to convey the jig 20 through the first welding and gluing device 90 and the second welding and gluing device 100 in sequence. The first welding and gluing device 90 sticks the tape to the negative electrode ear and the negative electrode adapter of one of the battery cells a1 on the jig 20, and the second welding and gluing device 100 sticks the tape to the negative electrode ear and the negative electrode adapter of another battery cell a1 on the jig 20.

[0107] The first conveyor line 11 continues to convey the jig 20 to the downstream end of the first conveyor line 11 , and the second transfer mechanism 14 is used to translate the jig 20 at the downstream end of the first conveyor line 11 to the upstream end of the second conveyor line 12 .

[0108] The second conveyor line 12 continues to convey the jig 20 through the third welding and gluing device 110 and the fourth welding and gluing device 120 in sequence. The third welding and gluing device 110 sticks the tape to the positive tab and the positive adapter of one of the battery cells a1 on the jig 20, and the fourth welding and gluing device 120 sticks the tape to the positive tab and the positive adapter of another battery cell a1 on the jig 20.

[0109] The second conveyor line 12 continues to convey the jig 20 to the second visual inspection device 130 , which performs a visual inspection on the tape on the battery cell a1 to determine whether there is any adhesive tape anomaly.

[0110] The second conveyor line 12 continues to convey the jig 20 to the third loading device 140 , and the third loading device 140 loads the cover sheet a3 onto the second sub-jig 25 located at the second placement position A3 .

[0111] The second conveyor line 12 continues to convey the jig 20 to the third jig placement device 150, which transfers the second sub-jig 25 located at the second placement position A3 to the matching position A1 of the mother jig 21, thereby realizing the positioning of the cover piece a3 on the second sub-jig 25 and the adapter piece a2 (i.e., the positive adapter piece and the negative adapter piece) welded on the tab of the battery cell a1.

[0112] The second conveyor line 12 continues to convey the jig 20 to the second welding device 160 , and the second welding device 160 welds the positive electrode adapter sheet and the negative electrode adapter sheet on the jig 20 to the cover sheet a3 .

[0113] The second conveyor line 12 continues to convey the jig 20 to the second dust removal device 170 , which removes dust from the battery cells a1 , the adapter sheet a2 , and the cover sheet a3 on the jig 20 .

[0114] The second conveyor line 12 continues to convey the jig 20 to the third visual inspection device 180 , which is used to perform visual inspection on the adapter sheet a2 and the cover sheet a3 on the jig 20 to determine whether there are welding defects.

[0115] The second conveyor line 12 continues to convey the jig 20 to the fifth welding and gluing device 190 , which sticks the tape to the welding marks between the positive and negative electrode adapter sheets and the cover sheet a3 on the jig 20 .

[0116] The second conveyor line 12 continues to transport the jig 20 to the unloading device 210 and the fourth jig placement device 200. The unloading device 210 unloads the two battery cells a1, the positive electrode adapter, the negative electrode adapter, and the cover sheet a3 from the jig 20 as a whole. The fourth jig placement device 200 transfers the second sub-jig 25 from the docking position A1 to the second placement position A3 of the base 27.

[0117] The second conveyor line 12 continues to convey the jig 20 to the third dust removal device 220 and the first jig pick-up and placement device 230. The third dust removal device 220 removes dust from the jig 20. The first jig pick-up and placement device 230 is used to transfer the first sub-jig 23 located at the first placement position A2 of the base 27 to the matching position A1 of the two mother jigs 21.

[0118] The second conveyor line 12 continues to convey the jig 20 to the downstream end of the second conveyor line 12, and the first transfer mechanism 13 is used to translate the jig 20 from the downstream end of the second conveyor line 12 to the upstream end of the first conveyor line 11. This reciprocating process is used to continuously weld the battery cells a1 in batches.

[0119] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0120] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A welding device, characterized in that: include: Circulation device (10); A jig (20) is arranged on the circulation device (10) and is transported by the circulation device (10) along a preset transport route; A first loading device (30), a second loading device (40), a first welding device (50), a third loading device (140) and a second welding device (160) are sequentially arranged along the preset conveying route of the circulation device (10); The first loading device (30) and the second loading device (40) are respectively used to load the adapter plate (a2) and the battery cell (a1) onto the jig (20) passing through, the first welding device (50) is used to weld the tabs of the battery cell (a1) on the jig (20) passing through and the adapter plate (a2), the third loading device (140) is used to load the cover plate (a3) ​​onto the jig (20) passing through, and the second welding device (160) is used to weld the adapter plate (a2) and the cover plate (a3) ​​on the jig (20) passing through.

2. The welding equipment according to claim 1, characterized in that The welding equipment further comprises a blanking device (210) arranged downstream of the second welding device (160), and the blanking device (210) is used to blank the battery cells (a1), the adapter sheets (a2) and the cover sheets (a3) ​​on the jig (20) passing through.

3. The welding equipment according to claim 2, characterized in that The circulation device (10) drives the jig (20) to circulate sequentially through the first loading device (30), the second loading device (40), the first welding device (50), the third loading device (140), the second welding device (160) and the unloading device (210).

4. The welding equipment according to claim 3, characterized in that The circulation device (10) comprises a first conveying line (11), a second conveying line (12), a first transfer mechanism (13) and a second transfer mechanism (14); The first conveyor line (11) is used to convey the jig (20) from its upstream end to its downstream end, and the first transfer mechanism (13) is arranged between the upstream end of the first conveyor line (11) and the downstream end of the second conveyor line (12), and is used to transfer the jig (20) on the downstream end of the second conveyor line (12) to the upstream end of the first conveyor line (11); the second conveyor line (12) is used to convey the jig (20) from its upstream end to its downstream end, and the second transfer mechanism (14) is arranged between the downstream end of the first conveyor line (11) and the upstream end of the second conveyor line (12), and is used to transfer the jig (20) on the downstream end of the first conveyor line (11) to the upstream end of the second conveyor line (12).

5. The welding device according to claim 4, characterized in that The first loading device (30), the second loading device (40), and the first welding device (50) are arranged in sequence along the first conveyor line (11) from the upstream end to the downstream end; the third loading device (140), the second welding device (160), and the unloading device (210) are arranged in sequence along the second conveyor line (12) from the upstream end to the downstream end.

6. The welding equipment according to claim 1, characterized in that The first loading device (30) is used to load the positive electrode adapter sheet and the negative electrode adapter sheet onto the jig (20) passing through; The first welding device (50) includes a positive electrode welding device (51) and a negative electrode welding device (53) arranged along the preset conveying route of the circulation device (10), the positive electrode welding device (51) being used to weld the positive electrode ear and the positive electrode adapter of the battery cell (a1) on the jig (20) passing through, and the negative electrode welding device (53) being used to weld the negative electrode ear and the negative electrode adapter of the battery cell (a1) on the jig (20) passing through.

7. The welding device according to claim 6, characterized in that The welding equipment includes a rotating station (52) located between the positive electrode welding device (51) and the negative electrode welding device (53), and the circulation device (10) drives the jig (20) to rotate at the rotating station (52).

8. The welding equipment according to claim 1, characterized in that The jig (20) comprises a mother jig (21), a first sub-jig (23) and a second sub-jig (25); the mother jig (21) is used to receive the battery cell (a1); the first sub-jig (23) is used to receive the adapter sheet (a2); the second sub-jig (25) is used to receive the cover sheet (a3); the first sub-jig (23) and the second sub-jig (25) can be alternately matched with the mother jig (21).

9. The welding device according to claim 8, characterized in that When the first sub-jig (23) is mated with the mother jig (21), the tabs of the battery cell (a1) on the mother jig (21) and the adapter (a2) on the first sub-jig (23) are positioned; When the second sub-jig (25) is mated with the mother jig (21), the adapter piece (a2) on the mother jig (21) that is welded and fixed to the tab of the battery cell (a1) and the cover piece (a3) ​​on the second sub-jig (25) are positioned.

10. The welding device according to claim 8, characterized in that The jig (20) further comprises a base (27), the mother jig (21) is mounted on the base (27), the base (27) has a first placement position (A2) and a second placement position (A3), the mother jig (21) has a matching position (A1), the first sub-jig (23) switches between the first placement position (A2) and the matching position (A1), and the second sub-jig (25) switches between the second placement position (A3) and the matching position (A1).

11. The welding device according to claim 10, characterized in that The mating position (A1) of the mother jig (21) is provided with a positioning pin (212), and the first sub-jig (23) and the second sub-jig (25) are both provided with positioning holes (A5) capable of cooperating with the positioning pin (212); or The mating position (A1) of the mother jig (21) is provided with a positioning hole (A5), and both the first sub-jig (23) and the second sub-jig (25) are provided with a positioning pin (212) capable of mating with the positioning hole.

12. The welding device according to claim 10, characterized in that The mating position (A1) of the mother jig (21) is provided with a magnetic attraction member (213); or The magnetic attraction member (213) is provided on both the first sub-jig (23) and the second sub-jig (25).

13. The welding device according to claim 3, characterized in that The jig (20) comprises a base (27), a mother jig (21), a first sub-jig (23) and a second sub-jig (25); the mother jig (21) is used to receive the battery core (a1); the first sub-jig (23) is used to receive the adapter sheet (a2); the second sub-jig (25) is used to receive the cover sheet (a3); the mother jig (21) is mounted on the base (27); the base (27) has a first placement position (A2) and a second placement position (A3) for respectively placing the first sub-jig (23) and the second sub-jig (25); and the mother jig (21) has a matching position (A1); The welding equipment further includes a first jig placing device (230) and a second jig placing device (70), wherein the first jig placing device (230) is arranged between the downstream of the unloading device (210) and the upstream of the first loading device (30), and the first jig placing device (230) is used to transfer the first sub-jig (23) located at the first placement position (A2) to the matching position (A1); and the second jig placing device (70) is arranged between the downstream of the first welding device (50) and the upstream of the second loading device (40), and the second jig placing device (70) is used to transfer the first sub-jig (23) located at the matching position (A1) to the first placement position (A2).

14. The welding device according to claim 13, characterized in that The welding equipment further comprises a third jig placing device (150) and a fourth jig placing device (200), wherein the third jig placing device (150) is arranged downstream of the second feeding device (40) and upstream of the second welding device (160), and the third jig placing device (150) is used to transfer the second sub-jig (25) located at the second placement position (A3) to the matching position (A1); and the fourth jig placing device (200) is arranged between the downstream of the second welding device (160) and the upstream of the first jig placing device (230), and the fourth jig placing device (200) is used to transfer the second sub-jig (25) located at the matching position to the second placement position (A3).

15. The welding device according to claim 14, characterized in that The first jig pick-up and placement device (230), the second jig pick-up and placement device (70), the third jig pick-up and placement device (150), and the fourth jig pick-up and placement device (200) all include a motion drive mechanism (301) and a hooking mechanism (401), wherein the hooking mechanism (401) includes a hooking drive member (403) mounted on a driving end of the motion drive mechanism (301) and two hooks (405) connected to the hooking drive member (403), and the two hooks (405) have protrusions (407) on the sides facing away from each other; The first sub-jig (23) and the second sub-jig (25) both have a hollow groove (A4) and a first side wall (A41) and a second side wall (A42) serving as opposite side walls of the hollow groove (A4); and a clamping groove (A43) is provided on the first side wall (A41) and the second side wall (A42).

16. The welding device according to claim 15, characterized in that The hollow groove (A4) is used for allowing the two hook claws (405) of the hooking mechanism (401) to enter and exit, and the clamping grooves (A43) on the first side wall (A41) and the second side wall (A42) are respectively used for allowing the protrusions (407) on the two hook claws (405) to enter and exit.

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