Laser welding pressing mechanism and battery laser welding equipment

Abstract

The utility model relates to the technical field of battery production, in particular to a laser welding pressing mechanism and battery laser welding device.The laser welding pressing mechanism comprises a pressing head and a bearing component which is arranged above the pressing head and detachably connected with the pressing head; the pressure head comprises a laser flow guide channel and a dust collection flow guide channel communicated with the laser flow guide channel, and the dust collection flow guide channel collects impurities in the laser flow guide channel; the receiving component comprises a laser receiving channel and a dust collection receiving channel, the laser receiving channel guides the laser beams into the laser flow guide channel, and the dust collection receiving channel collects impurities in the dust collection flow guide channel. According to the laser welding pressing mechanism, when laser welding is carried out, most of smoke dust and small-particle welding slag can be collected through the dust collection flow guide channel, the pressing head is detachably connected with the bearing component, rapid disassembly and replacement of the pressing head are achieved, large-particle welding slag is prevented from remaining in the laser flow guide channel, and the laser welding quality is improved. Therefore, the production efficiency and the welding quality of the battery are improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a laser welding clamping mechanism and a battery laser welding device. Background Art

[0002] In the production process of aluminum shell batteries, battery laser welding equipment can be used to first weld the battery collector's pole ear and the connecting piece together, and then weld the connecting piece and the cover plate together. However, impurities such as welding slag or smoke will be generated in the above welding process. In order to reduce the cross-contamination of impurities generated by the welding process with other parts, the pressure head of the battery laser welding equipment is provided with a laser guide channel and a dust suction guide channel. The laser passes through the laser guide channel for operation, and the dust suction guide channel collects impurities in the laser guide channel.

[0003] During laser welding, the dust suction and guide channel can collect most of the smoke and small particles of welding slag generated during the welding process, but large particles of welding slag will remain in the laser guide channel. When large particles of welding slag accumulate in large quantities, it is easy to pollute the welding surface, so the pressure head needs to be replaced or cleaned regularly. However, in the prior art, the disassembly and assembly of the pressure head is mainly done manually. Due to the complex structure of the pressure head, manual disassembly and assembly of the pressure head is not only time-consuming and labor-intensive, but also affects the normal production of aluminum shell batteries. In particular, the disassembly and assembly of the pressure head requires shutdown, which has high labor costs and low production efficiency.

[0004] In view of this, this application is specially filed. Utility Model Content

[0005] The present application provides a laser welding clamping mechanism and a battery laser welding device to solve the problem of how to quickly disassemble and replace the pressure head.

[0006] On the one hand, the present application provides a laser welding clamping mechanism, comprising a pressing head and a receiving member disposed above the pressing head and detachably connected to the pressing head, wherein:

[0007] The pressure head comprises:

[0008] Laser guide channel;

[0009] a dust suction and guide channel, which is in communication with the laser guide channel, and is used to collect impurities in the laser guide channel;

[0010] The receiving member comprises:

[0011] A laser receiving channel communicated with the laser guiding channel, and the laser receiving channel is used to guide the laser beam into the laser guiding channel;

[0012] A dust suction receiving channel, which communicates with the dust suction diversion channel, is used to collect impurities in the dust suction diversion channel.

[0013] In some embodiments, the indenter further includes a protective gas diversion channel communicating with the laser diversion channel, and the protective gas diversion channel is used to introduce an inert gas into the laser diversion channel;

[0014] The receiving member further includes a protective gas receiving channel communicating with the protective gas diversion channel, and the protective gas receiving channel is used to introduce the inert gas into the protective gas diversion channel.

[0015] In some embodiments, the dust suction diversion channel and / or the protective gas diversion channel are arranged in the laser diversion channel; and / or

[0016] The dust suction receiving channel and / or the protective gas receiving channel are arranged in the laser receiving channel.

[0017] In some embodiments, the dust suction receiving channel is arranged in the laser receiving channel, and the dust suction receiving channel includes:

[0018] A first dust suction channel, which is horizontally arranged in the laser receiving channel, and an impurity outlet is arranged at one end of the first dust suction channel;

[0019] A second dust suction channel, which is vertically arranged in the laser receiving channel and is connected to the other end of the first dust suction channel, and an impurity inlet communicating with the dust suction diversion channel is arranged at the bottom of the second dust suction channel.

[0020] In some embodiments, the protective gas receiving channel is arranged in the laser receiving channel, and the protective gas receiving channel includes:

[0021] A first protective gas channel, which is horizontally arranged in the laser receiving channel, and an air inlet is arranged at one end of the first protective gas channel;

[0022] A second protective gas channel, which is vertically arranged in the laser receiving channel and is connected to the other end of the first protective gas channel, and an air outlet communicating with the protective gas diversion channel is arranged at the bottom of the second protective gas channel.

[0023] In some embodiments, the laser diversion channel includes:

[0024] A main laser channel, which communicates with the laser receiving channel;

[0025] The laser branch channels are arranged below the laser main channel and communicate with the laser main channel. At least two of the laser branch channels are arranged in sequence in the horizontal direction. At least one dust suction diversion channel and at least one shielding gas diversion channel communicate with the corresponding laser branch channels.

[0026] In some embodiments, the indenter further includes:

[0027] An indenter body, on which at least two of the laser branch channels are arranged;

[0028] A guiding body, which is arranged above the indenter body and connected to the indenter body. The laser main channel is arranged on the guiding body.

[0029] Wherein, the dust suction diversion channel and the shielding gas diversion channel are respectively arranged in the laser main channel, and the shielding gas diversion channel extends downward into the corresponding laser branch channel.

[0030] In some embodiments, the indenter and the receiving member are respectively provided with connection holes for fasteners to pass through. The fasteners sequentially pass through the connection holes provided in the indenter and the receiving member, so that the indenter and the receiving member are firmly connected.

[0031] In some embodiments, the receiving member is provided with mounting holes. The laser welding pressing mechanism further includes:

[0032] A pressing block, which is arranged below the receiving member;

[0033] A rotary pressing cylinder, the rotary output shaft of which is vertically arranged and passes through the mounting hole to be connected to the pressing block, and is used to drive the pressing block to rotate to the bottom of the indenter to press the indenter upward.

[0034] On the other hand, the present application also provides a battery laser welding device, including the above-mentioned laser welding pressing mechanism.

[0035] After adopting the above technical solutions, the present application has the following beneficial effects compared with the prior art.

[0036] 1. In the laser welding pressing mechanism of the present application, during laser welding, most of the smoke and small particle welding slag can be collected through the dust suction diversion channel and transported to the dust suction receiving channel, preventing the smoke and small particles from accumulating in the dust suction diversion channel and affecting the cleaning effect of impurities. The indenter and the receiving member are detachably connected, simplifying the disassembly and assembly operation of the indenter, realizing the rapid disassembly and replacement of the indenter, and avoiding large particle welding slag remaining in the laser diversion channel, thereby improving the production efficiency and welding quality of the battery.

[0037] 2. The battery laser welding equipment in this application includes the laser welding pressing mechanism in this application, so it simultaneously includes all the above advantages of the laser welding pressing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural diagram of a laser welding pressing mechanism in an embodiment of this application;

[0039] Figure 2 is a schematic structural diagram of a pressing head in an embodiment of this application;

[0040] Figure 3 is a schematic structural diagram of a receiving member in an embodiment of this application;

[0041] Figure 4 is Figure 1 a partial enlarged view of A in

[0042] Figure 5 is Figure 1 a partial enlarged view of B in

[0043] In the figure: 100, laser welding pressing mechanism; 110, pressing head; 111, laser diversion channel; 1111, laser main channel; 1112, laser branch channel; 112, protective gas diversion channel; 113, dust suction diversion channel; 114, pressing head main body; 115, guiding main body; 120, receiving member; 121, laser receiving channel; 122, protective gas receiving channel; 1221, protective gas first channel; 1222, protective gas second channel; 123, dust suction receiving channel; 1231, dust suction first channel; 1232, dust suction second channel; 124, receiving main body; 130, rotary pressing cylinder; 131, rotary output shaft; 140, suction device; 150, pressing block; 160, fastener. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] The technical solutions of this application will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the protection scope of this application.

[0045] An embodiment of this application provides a laser welding pressing mechanism 100, which is applied to battery laser welding equipment. For the specific structure of this laser welding pressing mechanism 100, please refer to Figures 1 to 5, which includes a pressure head 110 and a receiving member 120 disposed above the pressure head 110 and detachably connected to the pressure head 110. Among them, the pressure head 110 includes a laser diversion channel 111 and a dust suction diversion channel 113 communicating with the laser diversion channel 111. The dust suction diversion channel 113 is used to collect impurities in the laser diversion channel 111; the receiving member 120 includes a laser receiving channel 121 and a dust suction receiving channel 123. The laser receiving channel 121 is used to introduce a laser beam into the laser diversion channel 111, and the dust suction receiving channel 123 is used to collect impurities in the dust suction diversion channel 113.

[0046] According to the laser welding pressing mechanism 100 of the application, during laser welding, most of the soot and small particle welding slag can be collected through the dust suction diversion channel 113 and transported to the dust suction receiving channel 123, preventing the soot and small particles from accumulating in the dust suction diversion channel 113 and affecting the cleaning effect of impurities. The pressure head 110 and the receiving member 120 are detachably connected, simplifying the disassembly and assembly operation of the pressure head 110, realizing the rapid disassembly and replacement of the pressure head 110, and avoiding large particle welding slag remaining in the laser diversion channel 111, thereby improving the production efficiency and welding quality of the battery.

[0047] As Figure 2 shown, the pressure head 110 further includes a protective gas diversion channel 112 communicating with the laser diversion channel 111. The protective gas diversion channel 112 is used to introduce an inert gas into the laser diversion channel 111 for auxiliary welding, preventing the welding surface from oxidation and improving the welding quality of the aluminum shell battery surface. Among them, the protective gas can be nitrogen. Nitrogen can not only protect the welding area from the pollution of oxygen and water vapor in the atmosphere, avoiding the generation of oxidation, corrosion, slag and other pollutants, but also reduce the content of dissolved gas, eliminate soot and fog, making the welding process safer and cleaner. Of course, the protective gas can also be other inert gases commonly used in the prior art as long as it can prevent the welding surface from oxidation during the welding process.

[0048] As Figure 3 shown, the receiving member 120 further includes a protective gas receiving channel 122 communicating with the protective gas diversion channel 112. The protective gas receiving channel 122 is used to introduce the inert gas into the protective gas diversion channel 112, and auxiliary welding is realized by introducing the inert gas into the protective gas diversion channel 112. It should be noted that the inert gas mentioned in this embodiment can be nitrogen or other inert gases commonly used in the prior art, which will not be elaborated here.

[0049] As Figure 2As shown, a dust suction diversion channel 113 and a protective gas diversion channel 112 are arranged in a laser diversion channel 111. By integrating the dust suction diversion channel 113 and the protective gas diversion channel 112 into the laser diversion channel 111, the internal structure of the indenter 110 is simplified, the production efficiency of the indenter 110 is improved, and thus the production cost of the indenter 110 is reduced.

[0050] As Figure 3 shown, a dust suction receiving channel 123 and a protective gas receiving channel 122 are arranged in a laser receiving channel 121. By integrating the dust suction receiving channel 123 and the protective gas receiving channel 122 into the laser receiving channel 121, the internal structure of the receiving member 120 is simplified, the production efficiency of the receiving member 120 is improved, and thus the production cost of the receiving member 120 is reduced.

[0051] As Figure 3 shown, the receiving member 120 further includes a receiving body 124. Among them, the laser receiving channel 121, the dust suction receiving channel 123, and the protective gas receiving channel 122 are all arranged on the receiving body 124.

[0052] For the specific structure of the dust suction receiving channel 123, please refer to Figure 3 , which includes a dust suction first channel 1231 and a dust suction second channel 1232. Among them, the dust suction first channel 1231 is horizontally arranged in the laser receiving channel 121, and one end of the dust suction first channel 1231 is provided with an impurity outlet; the dust suction second channel 1232 is vertically arranged in the laser receiving channel 121 and is connected to the other end of the dust suction first channel 1231. An impurity inlet communicating with the dust suction diversion channel 113 is arranged at the bottom of the dust suction second channel 1232, which is beneficial to the flow of impurities towards the impurity outlet.

[0053] As Figure 3 shown, a negative pressure suction pipeline extending in the horizontal direction is arranged in the laser receiving channel 121. One end of the negative pressure suction pipeline extends out of the laser receiving channel 121 and is provided with an impurity outlet located outside the receiving body 124. The inside of the negative pressure suction pipeline forms the dust suction first channel 1231.

[0054] As Figure 3 shown, the bottom of the receiving body 124 forms a dust suction cavity with an open bottom towards the inside of the laser receiving channel 121. The negative pressure suction pipeline is communicated with the dust suction cavity, and the inside of the dust suction cavity forms the dust suction second channel 1232.

[0055] For the specific structure of the protective gas receiving channel 122, please refer to Figure 3, which includes a first shielding gas channel 1221 and a second shielding gas channel 1222. Among them, the first shielding gas channel 1221 is horizontally arranged in the laser receiving channel 121, and one end of the first shielding gas channel 1221 is provided with an air inlet; the second shielding gas channel 1222 is vertically arranged in the laser receiving channel 121 and is connected to the other end of the first shielding gas channel 1221. The bottom of the second shielding gas channel 1222 is provided with an air outlet communicating with the shielding gas diversion channel 112, which is beneficial to the flow of the shielding gas towards the air outlet.

[0056] As Figure 3 shown, a shielding gas output pipeline extending in the horizontal direction is arranged in the laser receiving channel 121. One end of the shielding gas output pipeline extends out of the laser receiving channel 121 and is provided with an air inlet located outside the receiving body 124. The inside of the shielding gas output pipeline forms the first shielding gas channel 1221.

[0057] As Figure 3 shown, the bottom of the receiving body 124 forms a diversion cavity with an open bottom towards the inside of the laser receiving channel 121. The shielding gas output pipeline is communicated with the diversion cavity, and the inside of the diversion cavity forms the second shielding gas channel 1222.

[0058] As Figure 1 shown, the laser welding pressing mechanism 100 further includes a suction device 140 arranged above the receiving body 124. The suction device 140 is communicated with the impurity outlet of the first dust suction channel 1231 through a connecting pipeline and generates a suction force for sucking impurities.

[0059] For the specific structure of the laser diversion channel 111, please refer to Figure 2 and Figure 4 , which includes a main laser channel 1111 and a laser branch channel 1112. Among them, the main laser channel 1111 communicates with the laser receiving channel 121; the laser branch channel 1112 is arranged below the main laser channel 1111 and communicates with the main laser channel 1111. At least two laser branch channels 1112 are arranged in sequence in the horizontal direction. At least one dust suction diversion channel 113 and at least one shielding gas diversion channel 112 communicate with the corresponding laser branch channels 1112, which can effectively increase the welding area and welding efficiency.

[0060] As Figure 2 and Figure 4As shown, the ram 110 also includes a ram body 114 and a guide body 115, wherein at least two laser branch channels 1112 are arranged on the ram body 114; the guide body 115 is arranged above the ram body 114 and connected to the ram body 114, and the laser main channel 1111 is arranged on the guide body 115. By arranging at least two laser branch channels 1112 on the ram body 114, at least a double ram 110 structure is formed, which has a larger welding area and improves welding efficiency.

[0061] like Figure 2 As shown, the dust suction guide channel 113 and the protective gas guide channel 112 are respectively arranged in the laser main channel 1111, and the protective gas guide channel 112 extends downward to the corresponding laser branch channel 1112. When laser welding is performed, the inert gas is directly introduced into the laser branch channel 1112, and continuously impacts the welding surface to cool and dissipate heat, prevent oxidation, avoid excessive welding, and ensure the laser welding temperature, thereby effectively avoiding aging of the pole ear sealing ring, leakage of the battery cell and the like, thereby improving the welding yield and battery safety.

[0062] To facilitate the production of the ram 110, the ram body 114 and the guide body 115 are an integrated structure. Specifically, the ram body 114 and the guide body 115 can be cast as one piece, or the guide body 115 can be welded to the ram body 114. Through the above structure, the production cost of the ram 110 can be effectively reduced.

[0063] like Figure 2 and Figure 4 As shown, two laser branch channels 1112 are provided on the press head body 114, forming a double press head 110 structure, so that the laser can operate through the two laser branch channels 1112. Of course, the two laser branch channels 1112 are provided only as a preferred implementation method. In order to increase the welding area and improve the welding efficiency, other numbers of laser branch channels 1112 may also be provided, such as three, four, five, etc.

[0064] like Figure 2 As shown, four dust suction guide channels 113 are arranged in the laser main channel 1111, and correspondingly, four dust suction receiving channels 123 are arranged in the laser receiving channel 121. The dust suction receiving channels 123 and the dust suction guide channels 113 are arranged one by one, that is, the dust suction second channel 1232 is connected to the dust suction guide channel 113, wherein, in order to ensure the impurity suction effect, every two dust suction guide channels 113 are correspondingly arranged above a laser branch channel 1112 and are connected to the corresponding laser branch channel 1112. Of course, the arrangement of four dust suction guide channels 113 is only used as a preferred embodiment. In order to improve the dust suction efficiency and quality, other numbers of dust suction guide channels 113 may also be arranged, such as two, three, five, etc.

[0065] As Figure 2 shown, two shielding gas diversion channels 112 are provided in the main laser channel 1111. Correspondingly, two shielding gas receiving channels 122 are provided in the laser receiving channel 121. The shielding gas receiving channels 122 and the shielding gas diversion channels 112 are arranged in one-to-one correspondence, that is, the second shielding gas channel 1222 communicates with the shielding gas diversion channel 112. Among them, each shielding gas diversion channel 112 extends into the corresponding laser branch channel 1112 and communicates with the corresponding laser branch channel 1112. Of course, setting two shielding gas diversion channels 112 is only a preferred implementation manner. In order to improve the welding yield and battery safety, other numbers of dust suction diversion channels 113 can also be set, such as three, four, five, etc.

[0066] As Figures 1 to 3 shown, both the receiving body 124 and the guiding body 115 are plate-shaped. The receiving body 124 is arranged above the guiding body 115, and the bottom surface of the receiving body 124 is closely attached to the top surface of the guiding body 115, so that the connection between the pressing head 110 and the receiving member 120 is more firm.

[0067] As Figure 1 shown, the pressing head 110 and the receiving member 120 are respectively provided with connection holes for the fastener 160 to pass through. The fastener 160 passes through the connection holes provided in the pressing head 110 and the receiving member 120 in sequence, so that the pressing head 110 and the receiving member 120 are firmly connected.

[0068] As Figure 1 shown, the receiving body 124 is arranged above the guiding body 115 and is in surface-to-surface contact with the guiding body 115. The laser receiving channel 121 is docked with the main laser channel 1111, the second dust suction channel 1232 is docked with the dust suction diversion channel 113, and the second shielding gas channel 1222 is docked with the shielding gas diversion channel 112. The entire laser welding pressing mechanism 100 has good airtightness.

[0069] Specifically, as Figure 1 shown, the guiding body 115 and the receiving body 124 are respectively provided with connection holes for the fastener 160 to pass through. The fastener 160 passes through the connection holes provided in the guiding body 115 and the receiving body 124 in sequence, so that the pressing head 110 and the receiving member 120 are firmly connected.

[0070] As Figure 1 and Figure 5As shown, the receiving member 120 is provided with mounting holes. The laser welding pressing mechanism 100 further includes a pressing block 150 and a rotary pressing cylinder 130. Among them, the pressing block 150 is arranged below the receiving member 120; the rotary output shaft 131 of the rotary pressing cylinder 130 is vertically arranged and passes through the mounting hole to be connected with the pressing block 150, and is used to drive the pressing block 150 to rotate to the bottom of the pressing head 110 to press the pressing head 110 upward, so that the pressing head 110 is closely attached to the receiving member 120. In particular, the bottom surface of the receiving main body 124 and the top surface of the guiding main body 115 are closely attached through pressing, so as to ensure the sealing performance at the joints of the dust suction diversion channel 113 and the dust suction receiving channel 123, and the protective gas diversion channel 112 and the protective gas receiving channel 122, and prevent impurities or protective gas from escaping.

[0071] In the embodiment of the present application, a battery laser welding device is further provided. The battery laser welding device welds the tab of the battery current collector to the connecting piece, and then welds and combines the connecting piece with the cover plate. The battery laser welding device includes the laser welding pressing mechanism 100 of the above embodiment.

[0072] According to the battery laser welding device of the application, since it includes the laser welding pressing mechanism 100 in the present application, it simultaneously includes all the above advantages of the laser welding pressing mechanism 100.

[0073] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present application.

[0074] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0075] In this application, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0076] In this application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0077] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A laser welding clamping mechanism, characterized in that: It comprises a pressure head and a receiving member arranged above the pressure head and detachably connected to the pressure head, wherein: The pressure head comprises: Laser guide channel; a dust suction and guide channel, which is in communication with the laser guide channel, and is used to collect impurities in the laser guide channel; The receiving member comprises: A laser receiving channel communicated with the laser guiding channel, and the laser receiving channel is used to guide the laser beam into the laser guiding channel; The dust collection channel is communicated with the dust collection guide channel, and the dust collection channel is used to collect impurities in the dust collection guide channel.

2. The laser welding clamping mechanism according to claim 1, characterized in that: The pressure head also includes a protective gas guide channel communicated with the laser guide channel, and the protective gas guide channel is used to pass an inert gas into the laser guide channel; The receiving component also includes a shielding gas receiving channel communicated with the shielding gas guide channel, and the shielding gas receiving channel is used to introduce inert gas into the shielding gas guide channel.

3. The laser welding clamping mechanism according to claim 2, characterized in that: The dust suction guide channel and / or the protective gas guide channel are arranged in the laser guide channel; and / or The dust suction receiving channel and / or the protective gas receiving channel are arranged in the laser receiving channel.

4. The laser welding clamping mechanism according to claim 3, characterized in that: The dust suction receiving channel is arranged in the laser receiving channel, and the dust suction receiving channel comprises: A first dust suction channel is horizontally arranged in the laser receiving channel, and an impurity outlet is arranged at one end of the first dust suction channel; The second dust suction channel is vertically arranged in the laser receiving channel and connected to the other end of the first dust suction channel. The bottom of the second dust suction channel is provided with an impurity inlet communicated with the dust suction guide channel.

5. The laser welding clamping mechanism according to claim 3, characterized in that: The protective gas receiving channel is arranged in the laser receiving channel, and the protective gas receiving channel includes: A first protective gas channel is horizontally arranged in the laser receiving channel, and an air inlet is arranged at one end of the first protective gas channel; The second shielding gas channel is vertically arranged in the laser receiving channel and connected to the other end of the first shielding gas channel. The bottom of the second shielding gas channel is provided with an outlet communicated with the shielding gas guide channel.

6. The laser welding clamping mechanism according to claim 2, characterized in that: The laser guide channel comprises: A laser main channel communicates with the laser receiving channel; The laser branch channel is arranged below the laser main channel and communicated with the laser main channel. At least two of the laser branch channels are arranged in sequence along the horizontal direction. At least one of the dust suction guide channel and at least one of the protective gas guide channel are communicated with the corresponding laser branch channel.

7. The laser welding clamping mechanism according to claim 6, characterized in that: The pressure head also includes: A press head body, on which at least two of the laser branch channels are arranged; A guide body, wherein the guide body is arranged above the pressure head body and connected to the pressure head body, and the laser main channel is arranged on the guide body. Wherein, the dust suction guide channel and the protective gas guide channel are respectively arranged in the laser main channel, and the protective gas guide channel extends downward to the corresponding laser branch channel.

8. The laser welding clamping mechanism according to any one of claims 1 to 7, characterized in that: The pressing head and the receiving member are respectively provided with connection holes for fasteners to pass through, and the fasteners sequentially pass through the connection holes provided in the pressing head and the receiving member, so that the pressing head and the receiving member are fastened and connected.

9. The laser welding clamping mechanism according to any one of claims 1 to 7, characterized in that: The receiving member is provided with a mounting hole, and the laser welding clamping mechanism further comprises: A pressing block, arranged below the receiving member; A rotary pressing cylinder, wherein the rotary output shaft of the rotary pressing cylinder is vertically arranged and passes through the mounting hole to be connected with the pressing block, and is used to drive the pressing block to rotate to the bottom of the pressing head to press the pressing head upward.

10. A battery laser welding device, characterized in that: It comprises the laser welding clamping mechanism according to any one of claims 1 to 9.

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