WO2023045408A1 - 激光焊接铜嘴、激光焊接辅助装置及激光焊接设备 - Google Patents

激光焊接铜嘴、激光焊接辅助装置及激光焊接设备 Download PDF

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Publication number
WO2023045408A1
WO2023045408A1 PCT/CN2022/097815 CN2022097815W WO2023045408A1 WO 2023045408 A1 WO2023045408 A1 WO 2023045408A1 CN 2022097815 W CN2022097815 W CN 2022097815W WO 2023045408 A1 WO2023045408 A1 WO 2023045408A1
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Prior art keywords
air
laser welding
laser
air inlet
channel
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PCT/CN2022/097815
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English (en)
French (fr)
Inventor
张志宏
齐聪成
李郑娟
郑石雄
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Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
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Priority to EP22871469.7A priority Critical patent/EP4219060A4/en
Publication of WO2023045408A1 publication Critical patent/WO2023045408A1/zh
Priority to US18/308,686 priority patent/US20230264293A1/en
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/1462—Nozzles; Features related to nozzles
    • B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
    • B23K26/1476—Features inside the nozzle for feeding the fluid stream through the nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices

Definitions

  • the present application relates to the field of welding technology, in particular to a laser welding copper nozzle, a laser welding auxiliary device and laser welding equipment.
  • laser welding technology is more and more widely used in various fields.
  • the existing laser welding technology produces a lot of dust during welding, which will affect the welding effect.
  • the application provides a laser welding copper nozzle, laser welding auxiliary device and laser welding equipment, the laser welding copper nozzle can make the shielding gas form a stable stratosphere in the welding area during dust removal, and improve the welding protection effect. Avoid complex turbulence or turbulence in the shielding gas, so as to avoid the occurrence of false welding.
  • the present application provides a copper nozzle for laser welding, which has: an air inlet, used to communicate with the air inlet channel, so that the air blowing device can pass through the air inlet channel during laser welding.
  • the air inlet is blown;
  • the air outlet is used to communicate with the air extraction channel, so that the air suction device can be sucked from the air outlet through the air extraction channel during laser welding;
  • the air inlet of the air inlet The axis and the axis of the air outlet are on the same straight line, and a laser channel for passing the laser during laser welding is formed between the air inlet and the air outlet.
  • the air inlet and the air outlet are on the same straight line, and a laser channel for passing the laser during laser welding is formed between the air inlet and the air outlet, so that the shielding gas can be independently controlled when it flows from the inlet to the outlet, so that the shielding gas forms a stable stratosphere in the welding area, improves the welding protection effect, and avoids complex turbulence or turbulence in the shielding gas, thereby It can avoid the occurrence of false welding phenomenon.
  • the number of the air inlet and the air outlet is two, so that the laser channel through which the laser passes during laser welding can be cleaned in two layers, and the smoke and plasma in the airflow in the laser channel can be filtered more effectively
  • Such light-blocking particles can reduce the energy attenuation of the welding laser beam and further avoid the occurrence of false welding.
  • the cross-sectional size of the air inlet is smaller than or equal to the cross-sectional size of the air outlet.
  • the cross-sectional size of the air inlet is smaller than or equal to the cross-sectional size of the gas outlet, so that the protective gas entering through the air inlet channel can be sucked away through the pumping channel as much as possible, so as to avoid excess gas not being pumped in the laser channel. Gas turbulence occurs when walking, so as to further avoid the occurrence of false welding caused by gas turbulence in the laser channel.
  • the laser welding copper nozzle has a hollow cavity, and the hollow part of the cavity forms the laser channel for passing the laser light during laser welding.
  • the laser welding copper nozzle can be integrated, and the laser channel is formed by the hollow part of the cavity of the laser welding copper nozzle, which can save the cost of the laser welding copper nozzle and make the laser welding copper nozzle easy to install during laser welding.
  • both the air inlet and the air outlet are disposed on the inner sidewall of the cavity.
  • the surface of the laser welding copper nozzle is provided with: a gas inlet, the gas inlet communicates with the air inlet through the air inlet channel; a gas dust removal port, the gas dust removal port communicates with the outlet
  • the air ports communicate with each other through the air extraction channel. Under the action of external force (such as blowing equipment), the airflow can be directly guided from the gas inlet to the air inlet through the air inlet channel, and then to the air outlet through the laser channel. And under the action of external force (such as suction equipment), the airflow can be directly guided from the gas outlet to the gas dust removal port through the suction channel.
  • external force such as blowing equipment
  • the present application also provides a laser welding auxiliary device, including: the laser welding copper nozzle in any of the above embodiments; air blowing equipment, used to blow air to the air inlet through the air inlet channel ; an air suction device, used to extract air from the air outlet through the air suction channel.
  • the laser welding auxiliary device of this embodiment includes: the laser welding copper nozzle of any of the above embodiments, it is possible to combine the air inlet of the laser welding copper nozzle and the outlet of the laser welding copper nozzle
  • the air ports are arranged on the same straight line, and a laser channel for passing the laser light during laser welding is formed between the above-mentioned air inlet and the above-mentioned air outlet, so that when laser welding is used, the shielding gas flows from the air inlet to the outlet.
  • the gas port can be independently controlled to allow the shielding gas to form a stable stratosphere in the welding area, improve the welding protection effect, and avoid complex turbulence or turbulence in the shielding gas, thereby avoiding the occurrence of false welding.
  • the surface of the laser welding copper nozzle is provided with: a gas inlet, the gas inlet communicates with the air inlet through the air inlet channel; a gas dust removal port, the gas dust removal port communicates with the outlet
  • the air port is communicated through the air extraction channel;
  • the air blowing device is specifically used to blow air to the air inlet through the gas inlet through the air intake channel;
  • the air suction device is specifically used to blow air through the air inlet channel
  • the gas dedusting port extracts air from the gas outlet through the air extraction channel. Under the action of the blowing device, the airflow can be directly guided from the gas inlet to the air inlet through the air inlet channel, and then to the air outlet through the laser channel. And under the action of the suction device, the airflow can be directly guided from the gas outlet to the gas dust removal port through the suction channel.
  • the air blowing device is located on one side of the auxiliary welding station, and the suction device is located on the other side of the auxiliary welding station.
  • the air blowing device and the gas inlet, the suction device and the gas dust removal port can be reduced. The distance can improve the effect of suction and dust removal, and prevent welding dust from affecting the welding quality.
  • the present application also provides a laser welding device, including: a laser welder and the laser welding auxiliary device of any one of the above embodiments; the laser welder is arranged above the laser channel.
  • the laser welding equipment of this embodiment includes: the laser welding copper nozzle of any of the above embodiments, it is possible to combine the air inlet of the laser welding copper nozzle and the gas outlet of the laser welding copper nozzle It is arranged on the same straight line, and a laser channel is formed between the above-mentioned air inlet and the above-mentioned air outlet for the laser to pass through during laser welding, so that when laser welding is used, the shielding gas flows from the air inlet to the air outlet It can be independently controlled, so that the shielding gas forms a stable stratosphere in the welding area, improves the welding protection effect, and avoids complex turbulence or turbulence in the shielding gas, thereby avoiding the occurrence of virtual welding.
  • Fig. 1 is a schematic structural diagram of a laser welding copper nozzle provided by some embodiments of the present application
  • Fig. 2 is a cross-sectional view of a laser welding copper nozzle provided by some embodiments of the present application
  • Fig. 3 is a top view of a laser welding copper nozzle provided by some embodiments of the present application.
  • Fig. 4 is a schematic diagram of the positional relationship between the laser welder, the battery module, the laser welding copper nozzle, etc. during the welding of the laser welding equipment provided by some embodiments of the present application;
  • Fig. 5 is a schematic diagram of the positional relationship among the laser welder, the battery module, and the laser welding copper nozzle in Fig. 4 .
  • multiple refers to more than two (including two), similarly, “multiple groups” refers to more than two groups (including two), and “multiple pieces” refers to More than two pieces (including two pieces).
  • a new type of combined dust removal device for laser welding of power battery modules including a module positioning mechanism, a needle plate copper nozzle blowing mechanism and a dust suction mechanism;
  • a needle plate copper nozzle air blowing mechanism is installed inside; it can effectively reduce the smoke and dust pollution during the welding process when laser welding the busbar of the power battery module, thereby reducing the laser energy loss during welding and improving the power battery module.
  • the welding quality of the busbar The existing needle plate copper nozzle blowing mechanism has a rectangular structure. There is a protective gas inlet at the bottom of the blowing mechanism, and a smoke and dust removal port at the middle and upper part.
  • the existing needle plate copper nozzle air blowing mechanism is a circular structure, and there is a protective gas inlet at the bottom, and the dust removal is carried out by introducing a pipe from the upper part of the copper nozzle.
  • this design will also cause the protective gas The protection effect is poor, the complex airflow atmosphere, welding fume and plasma are likely to cause the smoke to block the light and cause false welding.
  • the laser welding copper nozzle can make the shielding gas form a stable stratosphere in the welding area during dust removal, Improve the welding protection effect, avoid the complex turbulence or turbulence phenomenon of the shielding gas, so as to avoid the occurrence of virtual welding.
  • Fig. 1 is a schematic structural diagram of a laser welding copper nozzle 43 provided in some embodiments of the present application
  • Fig. 2 is a laser welding provided in some embodiments of the present application
  • FIG. 3 is a top view of a laser welding copper nozzle 43 provided by some embodiments of the present application.
  • the laser welding copper nozzle 43 has: an air inlet 1, which is used to communicate with the air inlet passage 2, so that the air blowing equipment can pass through the air inlet passage 2 to the air inlet 1 during laser welding.
  • the air outlet 3 is used to communicate with the air extraction channel 4, so that the suction device can extract air from the air outlet 3 through the air extraction channel 4 during laser welding; the axis of the air inlet 1 and the axis of the air outlet 3 On the same straight line, and between the air inlet 1 and the air outlet 3, a laser passage for passing the laser light during laser welding is formed.
  • the gas blown by the blowing equipment is a protective gas, usually an inert gas.
  • the shielding gas can be independently controlled when it flows from the air inlet 1 to the air outlet 3, so that the shielding gas can flow in the welding area Form a stable stratosphere, improve the welding protection effect, avoid complex turbulence or turbulence in the shielding gas, and thus avoid the occurrence of virtual welding.
  • the air inlet 1 and the air outlet 3 are on the same straight line, and a laser channel for passing the laser during laser welding is formed between the air inlet 1 and the air outlet 3, it can
  • the shielding gas can be independently controlled when it flows from the inlet 1 to the outlet 3, so that the shielding gas can form a stable stratosphere in the welding area, improve the welding protection effect, and avoid complex turbulence or Turbulent flow phenomenon, so as to avoid the occurrence of false welding phenomenon.
  • each air inlet 1 is used to connect different The air intake passage 2; the air outlet 3 corresponding to the air inlet 1 one-to-one, for connecting different air extraction passages 4 .
  • the two air inlets 1 are respectively the first air inlet and the second air inlet
  • the two air outlets 3 are respectively the first air outlet and the second air outlet.
  • Each air inlet 1 is used to connect to different air inlet passages 2 .
  • the first air inlet is used for connecting with the first air inlet passage
  • the second air inlet is used for connecting with the second air inlet passage.
  • the air outlets 3 corresponding to the air inlets 1 are used to connect different air extraction channels 4 .
  • Such as air extraction channel 4 also is two, is respectively the first air extraction channel and the second air extraction channel.
  • the first air outlet is used to connect to the first air extraction channel
  • the second air outlet is used to connect to the second air extraction channel.
  • the axis of the first air inlet and the axis of the first air outlet are on the same straight line
  • the axis of the second air inlet and the axis of the second air outlet are on the same straight line.
  • the number of the air inlet 1 and the air outlet 3 is set to two, which can realize two-layer cleaning of the laser channel through which the laser passes through during laser welding, and filter the laser more effectively.
  • Light-blocking particles such as smoke and plasma in the airflow in the channel reduce the energy attenuation of the welding laser beam and further avoid the occurrence of false welding.
  • the cross-sectional dimension D1 of the air inlet 1 is smaller than or equal to the cross-sectional dimension D2 of the air outlet 3 .
  • the cross-sectional dimension D1 of the air inlet 1 is smaller than or equal to the cross-sectional dimension D2 of the gas outlet 3, so that the protective gas entering through the air inlet passage 2 can be absorbed through the suction passage 4 as much as possible. Pumping away to avoid gas turbulence in the laser channel due to excess gas not being pumped away, thereby further avoiding the occurrence of virtual welding due to gas turbulence in the laser channel.
  • the laser welding copper nozzle 43 has a hollow cavity 5, and the hollow part of the cavity forms a laser channel for allowing the laser to pass through during laser welding.
  • the laser welding copper nozzle 43 can be integrated, and the laser channel is formed through the hollow part of the cavity of the laser welding copper nozzle 43, which can save the cost of the laser welding copper nozzle 43, and make the laser welding copper nozzle 43 Nozzle 43 facilitates installation during laser welding.
  • both the air inlet 1 and the air outlet 3 are disposed on the inner side wall of the cavity.
  • the structure of the laser welding copper nozzle 43 can be made simpler, and design and processing costs can be saved.
  • the surface of the laser welding copper nozzle 43 is opened: the gas inlet 6, the gas inlet 6 communicates with the air inlet 1 through the air inlet passage 2; the gas dust removal port 7, the gas dust removal port 7 and The air outlet 3 is communicated with through the air extraction channel 4 .
  • the airflow under the action of an external force (such as blowing equipment), the airflow can be directly guided from the gas inlet 6 to the air inlet 1 through the inlet channel 2, and then to the gas outlet 3 through the laser channel. And under the action of external force (such as suction equipment), the airflow can be directly guided to flow from the air outlet 3 to the gas dust removal port 7 through the air extraction channel 4 .
  • an external force such as blowing equipment
  • this embodiment also provides a laser welding auxiliary device, the laser welding auxiliary device of this embodiment includes: the laser welding copper nozzle 43 of any of the above embodiments;
  • the air intake channel 2 blows air to the air intake port 1; the air suction device is used to extract air from the air outlet port 3 through the air suction channel 4.
  • the laser welding auxiliary device of this embodiment includes: the laser welding copper nozzle 43 of any of the above embodiments, it is possible to combine the air inlet 1 of the laser welding copper nozzle 43 and the laser welding copper nozzle
  • the air outlet 3 of the nozzle 43 is arranged on the same straight line, and a laser channel for passing the laser light during laser welding is formed between the above-mentioned air inlet 1 and the above-mentioned air outlet 3, so that when using laser welding, the shielding gas
  • the flow from the air inlet 1 to the air outlet 3 can be controlled independently, so that the shielding gas forms a stable stratosphere in the welding area, improves the welding protection effect, and avoids complex turbulent flow or turbulent flow of the shielding gas, thereby avoiding virtual welding. happened.
  • the surface of the laser welding copper nozzle 43 is opened: the gas inlet 6, the gas inlet 6 communicates with the air inlet 1 through the air inlet passage 2; the gas dust removal port 7, the gas dust removal port 7 and The air outlet 3 communicates through the air extraction channel 4; the air blowing device is specifically used to blow air to the air inlet 1 through the gas inlet 6 through the air intake channel 2; the air suction device is specifically used to pass through the gas dust removal port 7, The air extraction channel 4 extracts air from the air outlet 3 .
  • the airflow under the action of the blowing device, the airflow can be directly guided from the gas inlet 6 to the air inlet 1 through the air inlet channel 2, and then to the air outlet 3 through the laser channel. And under the action of the suction device, the air flow can be directly guided from the gas outlet 3 to the gas dust removal port 7 through the suction channel 4 .
  • the air blowing device is located on one side of the auxiliary welding station, and the air suction device is located on the other side of the auxiliary welding station.
  • the gap between the blowing device and the gas inlet 6 can be reduced. 1.
  • the distance between the suction device and the gas dust removal port 7 can well improve the effect of suction and dust removal, and prevent welding dust from affecting welding quality.
  • FIG. 4 is a schematic diagram of the positional relationship between the laser welder 41, the battery module 42, the laser welding copper nozzle 43, etc. when the laser welding equipment is welding; 5 is a schematic diagram of the positional relationship between the laser welder 41 , the battery module 42 , and the laser welding copper nozzle 43 in FIG. 4 .
  • the laser welding equipment includes: a laser welder 41 and the laser welding auxiliary device of any one of the above embodiments; the laser welder 41 is arranged above the laser channel.
  • the laser welding equipment of this embodiment can be used to weld any equipment that needs to be welded.
  • the following uses the laser welding equipment of this embodiment to weld a battery module as an example: the battery module 42 is placed on the welding station.
  • the laser welding copper nozzle 43 is placed above the battery module 42, and a laser channel is formed between the air inlet 1 and the air outlet 3 of the laser welding copper nozzle 43, and the laser channel is used to allow the laser beam 44 to pass through during laser welding Laser channel.
  • the suction device is opened to draw air from the air outlet 3 via the suction channel 4 .
  • the direction of the airflow is indicated by the dotted arrow in FIG. 5 .
  • the laser welding equipment of this embodiment includes: the laser welding copper nozzle of any of the above embodiments, it is possible to combine the air inlet of the laser welding copper nozzle and the gas outlet of the laser welding copper nozzle It is arranged on the same straight line, and a laser channel is formed between the above-mentioned air inlet and the above-mentioned air outlet for the laser to pass through during laser welding, so that when laser welding is used, the shielding gas flows from the air inlet to the air outlet It can be independently controlled, so that the shielding gas forms a stable stratosphere in the welding area, improves the welding protection effect, and avoids complex turbulence or turbulence in the shielding gas, thereby avoiding the occurrence of virtual welding.

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  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

一种激光焊接铜嘴、激光焊接辅助装置及激光焊接设备。激光焊接铜嘴具有：进气口（1），用于连通进气通道（2），以便于在激光焊接时使吹气设备通过所述进气通道（2）向所述进气口（1）进行吹气；出气口（3），用于连通抽气通道（4），以便于在激光焊接时使吸气设备通过所述抽气通道（4）从所述出气口（3）进行抽气；所述进气口（1）的轴与所述出气口（3）的轴在同一条直线上，且所述进气口（1）和所述出气口（3）之间形成用于在激光焊接时使激光通过的激光通道。通过进气口（1）的轴和出气口（3）的轴在同一条直线上，可以使保护气体在由进气口（1）流向出气口（3）时独立管控，让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。

Description

激光焊接铜嘴、激光焊接辅助装置及激光焊接设备
相关申请的交叉引用
本申请要求享有于2021年9月26日提交的名称为“激光焊接铜嘴、激光焊接辅助装置及激光焊接设备”的中国专利申请202122327330.X的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及焊接技术领域，特别涉及一种激光焊接铜嘴、激光焊接辅助装置及激光焊接设备。
背景技术
目前激光焊接技术越来越被广泛应用在各个领域，现有的激光焊接技术，在焊接时产生大量的粉尘，将影响焊接的效果。
现有技术中，在采用激光焊接技术对待焊接件进行焊接时，待焊接件的焊缝以及激光的光束通道会出现粉尘，从而会导致激光通道之间的等离子体和烟尘易紊流，造成激光能量衰减，最终引发虚焊现象的发生。
发明内容
鉴于上述问题，本申请提供一种激光焊接铜嘴、激光焊接辅助装置及激光焊接设备，该激光焊接铜嘴可以使在除尘时让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。
第一方面，本申请提供了一种激光焊接铜嘴，该激光焊接铜嘴具有：进气口，用于连通进气通道，以便于在激光焊接时使吹气设备通过所述进气通道向所述进气口进行吹气；出气口，用于连通抽气通道，以便于在激光焊接时使吸气设备通过所述抽气通道从所述出气口进行抽气；所述进气口的轴与所述出气口的轴在同一条直线上，且所述进气口和所述出气口之间形成用于在激光焊接时使激光通过的激光通道。
本申请实施例的技术方案中，通过进气口和出气口在同一条直线上，并且进气口和所述出气口之间形成用于在激光焊接时使激光通过的激光通道，可以使在使用激光焊接时，保护气体在由进气口流向出气口时能够独立管控，让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。
在一些实施例中，所述进气口和所述出气口均至少为两个，且所述进气口与所述出气口一一对应；每个所述进气口用于连接不同的所述进气通道；与所述进气口一一对应的所述出气口，用于连接不同的所述抽气通道。通过设置至少两个进气口和至少两个出气口，可以实现对激光焊接时使激光通过的激光通道进行多层次清洁，更加有效的过滤激光通道中气流的烟尘和等离子体等挡光颗粒物，降低焊接激光束能量衰减，进一步避免虚焊发生。
在一些实施例中，所述进气口和所述出气口的个数均为两个。将所述进气口和所述出气口的个数均为两个，可以实现对激光焊接时使激光通过的激光通道进行分两层清洁，更加有效的过滤激光通道中气流的烟尘和等离子体等挡光颗粒物，降低焊接激光束能量衰减，进一步避免虚焊发生。
在一些实施例中，所述进气口的截面尺寸小于或等于所述出气口的截面尺 寸。通过进气口的截面尺寸小于或等于出气口的截面尺寸，可以使通过进气通道进入的保护气体尽可能多的通过抽气通道被抽走，避免激光通道中由于有多余的气体未被抽走而发生气体紊流，从而进一步避免由于激光通道中的气体紊流造成虚焊现象的发生。
在一些实施例中，所述激光焊接铜嘴具有中空的腔体，所述腔体的中空部分形成所述激光通道，用于在激光焊接时使激光通过。激光焊接铜嘴可以为一体式，通过激光焊接铜嘴的腔体的中空部分形成所述激光通道，可以节省激光焊接铜嘴的成本，并且使得激光焊接铜嘴在激光焊接时便于安装。
在一些实施例中，所述进气口和所述出气口均设置于所述腔体的内侧壁。通过将所述进气口和所述出气口均设置于所述腔体的内侧壁，可以使激光焊接铜嘴的结构更加简洁，可以节约设计和加工成本。
在一些实施例中，所述激光焊接铜嘴的表面开设：气体入口，所述气体入口与所述进气口通过所述进气通道相通；气体除尘口，所述气体除尘口与所述出气口通过所述抽气通道相通。在外力(比如吹气设备)作用下，可以直接引导气流从气体入口经由进气通道流向进气口，然后经由激光通道流向出气口。并且在外力(比如吸气设备)作用下，可以直接引导气流从出气口经由抽气通道流向气体除尘口。
第二方面，本申请还提供了一种激光焊接辅助装置，包括：以上任一实施例的激光焊接铜嘴；吹气设备，用于通过所述进气通道向所述进气口进行吹气；吸气设备，用于通过所述抽气通道从所述出气口进行抽气。
本申请实施例的技术方案中，由于该实施例的激光焊接辅助装置包括：以上任一实施例的激光焊接铜嘴，所以可以通过将激光焊接铜嘴的进气口和激光 焊接铜嘴的出气口设置在同一条直线上，并且上述进气口和上述出气口之间形成用于在激光焊接时使激光通过的激光通道，可以使在使用激光焊接时，保护气体在由进气口流向出气口时能够独立管控，让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。
在一些实施例中，所述激光焊接铜嘴的表面开设：气体入口，所述气体入口与所述进气口通过所述进气通道相通；气体除尘口，所述气体除尘口与所述出气口通过所述抽气通道相通；所述吹气设备，具体用于通过所述气体入口，经由所述进气通道向所述进气口进行吹气；所述吸气设备，具体用于通过所述气体除尘口，经由所述抽气通道从所述出气口进行抽气。在吹气设备的作用下，可以直接引导气流从气体入口经由进气通道流向进气口，然后经由激光通道流向出气口。并且在吸气设备的作用下，可以直接引导气流从出气口经由抽气通道流向气体除尘口。
在一些实施例中，所述吹气设备位于焊接辅助工位的一侧，所述吸气设备位于所述焊接辅助工位的另一侧。通过将吹气设备位于焊接辅助工位的一侧，将吸气设备位于所述焊接辅助工位的另一侧，可以减少吹气设备与气体入口之间、吸气设备与气体除尘口之间的距离，可以很好地提升吸气除尘的效果，避免焊接粉尘影响焊接品质。
第三方面，本申请还提供了一种激光焊接设备，包括：激光焊接器以及以上任一实施例的激光焊接辅助装置；所述激光焊接器设置在所述激光通道的上方。
本申请实施例的技术方案中，由于该实施例的激光焊接设备包括：以上任 一实施例的激光焊接铜嘴，所以可以通过将激光焊接铜嘴的进气口和激光焊接铜嘴的出气口设置在同一条直线上，并且上述进气口和上述出气口之间形成用于在激光焊接时使激光通过的激光通道，可以使在使用激光焊接时，保护气体在由进气口流向出气口时能够独立管控，让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。
附图说明
通过阅读对下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在全部附图中，用相同的附图标号表示相同的部件。在附图中：
图1是本申请一些实施例提供的一种激光焊接铜嘴的结构示意图；
图2是本申请一些实施例提供的一种激光焊接铜嘴的剖面图；
图3是本申请一些实施例提供的一种激光焊接铜嘴的俯视图；
图4是本申请一些实施例提供的在激光焊接设备焊接时激光焊接器、电池模组、激光焊接铜嘴等之间的位置关系示意图；
图5是图4中激光焊接器、电池模组、激光焊接铜嘴之间的位置关系简图。
具体实施方式中的附图标号如下：
1-进气口；2-进气通道；3-出气口；4-抽气通道；5-中空的腔体；6-气体入口；7-气体除尘口；D1-进气口的截面尺寸；D2-出气口的截面尺寸；41-激光焊接器；42-电池模组；43-激光焊接铜嘴；44-激光光束。
具体实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、机构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中，技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
目前，从市场形势的发展来看，激光焊接技术的应用越加广泛。本发明人注意到，在现有技术中，采用吹气机构在焊接时对焊缝吹保护气将焊缝中的粉尘吹开(保护气体通常是惰性气体)以实现除尘，但是现有技术中还存在以下问题：激光焊接过程中除尘效果不明显，还会导致激光通道之间的等离子体和烟尘易紊流，造成激光能量衰减，最终引发虚焊现象的发生。
基于以上考虑，为了解决上述问题，申请人经过深入研究，一种动力电池模组激光焊接新型组合除尘装置，包括模组定位机构、针板铜嘴吹气机构和吸尘机构；长条形槽内安装有针板铜嘴吹气机构；能够在对动力电池模组的汇流 排进行激光焊接时，有效减少焊接过程中的烟尘污染，从而降低在焊接时的激光能量损耗，提高动力电池模组汇流排的焊接质量。现有的针板铜嘴吹气机构为矩形结构，吹气机构的底部有一个保护气体进气口，中上部有一个除烟尘口，但是，这种设计会导致保护气体保护效果差，会形成复杂的气流氛围，焊接烟尘和等离子体容易造成烟尘挡光，发生虚焊。或者，现有的针板铜嘴吹气机构为圆形结构，底部有一个保护气体进气口，除尘是通过从铜嘴上部引入一个管道进行除尘口，但是，这种设计也会导致保护气体保护效果差，复杂的气流氛围，焊接烟尘和等离子体容易造成烟尘挡光，发生虚焊。
在此基础上，本申请的申请人设计了一种激光焊接铜嘴、激光焊接辅助装置及激光焊接设备，该激光焊接铜嘴可以使在除尘时让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。
根据本申请的一些实施例，结合图1至图3所示，图1为本申请一些实施例提供的激光焊接铜嘴43的结构示意图，图2是本申请一些实施例提供的一种激光焊接铜嘴43沿该激光焊接铜嘴43其中一个方向的剖面图，图3是本申请一些实施例提供的一种激光焊接铜嘴43的俯视图。如图1至图3所示，激光焊接铜嘴43具有：进气口1，用于连通进气通道2，以便于在激光焊接时使吹气设备通过进气通道2向进气口1进行吹气；出气口3，用于连通抽气通道4，以便于在激光焊接时使吸气设备通过抽气通道4从出气口3进行抽气；进气口1的轴与出气口3的轴在同一条直线上，且进气口1和出气口3之间形成用于在激光焊接时使激光通过的激光通道。举例而言，在使用激光焊接设备对焊接件进行焊接时，可以使用吹气设备通过进气通道2向进气口1进行吹气，然后使用吸气设备通过抽气通道4从出气口3进行抽气。其中，吹气设备吹出的气体 为保护气体，通常为惰性气体。另外由于进气口1的轴与出气口3的轴在同一条直线上，所以在使用激光焊接时，保护气体在由进气口1流向出气口3时能够独立管控，让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。
本申请实施例的技术方案中，通过进气口1和出气口3在同一条直线上，并且进气口1和出气口3之间形成用于在激光焊接时使激光通过的激光通道，可以使在使用激光焊接时，保护气体在由进气口1流向出气口3时能够独立管控，让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。
根据本申请的一些实施例，可选地，进气口1和出气口3均至少为两个，且进气口1与出气口3一一对应；每个进气口1用于连接不同的进气通道2；与进气口1一一对应的出气口3，用于连接不同的抽气通道4。
本申请实施例的技术方案中，通过设置至少两个进气口1和至少两个出气口3，可以实现对激光焊接时使激光通过的激光通道进行多层次清洁，更加有效的过滤激光通道中气流的烟尘和等离子体等挡光颗粒物，降低焊接激光束能量衰减，进一步避免虚焊发生。
根据本申请的一些实施例，可选地，进气口1和出气口3的个数均为两个。比如，两个进气口1分别是第一进气口和第二进气口，两个出气口3分别是第一出气口和第二出气口。每个进气口1用于连接不同的进气通道2。比如进气通道2也为两个，分别是第一进气通道和第二进气通道。第一进气口用于连接第一进气通道，第二进气口用于连接第二进气通道。与进气口1一一对应的出气口3，用于连接不同的抽气通道4。比如抽气通道4也为两个，分别是第一抽气 通道和第二抽气通道。第一出气口用于连接第一抽气通道，第二出气口用于连接第二抽气通道。并且第一进气口的轴与第一出气口的轴在同一条直线上，第二进气口的轴与第二出气口的轴在同一条直线上。
本申请实施例的技术方案中，将进气口1和出气口3的个数均设置为两个，可以实现对激光焊接时使激光通过的激光通道进行分两层清洁，更加有效的过滤激光通道中气流的烟尘和等离子体等挡光颗粒物，降低焊接激光束能量衰减，进一步避免虚焊发生。
根据本申请的一些实施例，可选地，进气口1的截面尺寸D1小于或等于出气口3的截面尺寸D2。
本申请实施例的技术方案中，通过进气口1的截面尺寸D1小于或等于出气口3的截面尺寸D2，可以使通过进气通道2进入的保护气体尽可能多的通过抽气通道4被抽走，避免激光通道中由于有多余的气体未被抽走而发生气体紊流，从而进一步避免由于激光通道中的气体紊流造成虚焊现象的发生。
根据本申请的一些实施例，可选地，激光焊接铜嘴43具有中空的腔体5，腔体的中空部分形成激光通道，用于在激光焊接时使激光通过。
本申请实施例的技术方案中，激光焊接铜嘴43可以为一体式，通过激光焊接铜嘴43的腔体的中空部分形成激光通道，可以节省激光焊接铜嘴43的成本，并且使得激光焊接铜嘴43在激光焊接时便于安装。
根据本申请的一些实施例，可选地，进气口1和出气口3均设置于腔体的内侧壁。
本申请实施例的技术方案中，通过将进气口1和出气口3均设置于腔体的内侧壁，可以使激光焊接铜嘴43的结构更加简洁，可以节约设计和加工成本。
根据本申请的一些实施例，可选地，激光焊接铜嘴43的表面开设：气体入口6，气体入口6与进气口1通过进气通道2相通；气体除尘口7，气体除尘口7与出气口3通过抽气通道4相通。
本申请实施例的技术方案中，在外力(比如吹气设备)作用下，可以直接引导气流从气体入口6经由进气通道2流向进气口1，然后经由激光通道流向出气口3。并且在外力(比如吸气设备)作用下，可以直接引导气流从出气口3经由抽气通道4流向气体除尘口7。
根据本申请的一些实施例，该实施例还提供了一种激光焊接辅助装置，该实施例的激光焊接辅助装置包括：以上任一实施例的激光焊接铜嘴43；吹气设备，用于通过进气通道2向进气口1进行吹气；吸气设备，用于通过抽气通道4从出气口3进行抽气。
本申请实施例的技术方案中，由于该实施例的激光焊接辅助装置包括：以上任一实施例的激光焊接铜嘴43，所以可以通过将激光焊接铜嘴43的进气口1和激光焊接铜嘴43的出气口3设置在同一条直线上，并且上述进气口1和上述出气口3之间形成用于在激光焊接时使激光通过的激光通道，可以使在使用激光焊接时，保护气体在由进气口1流向出气口3时能够独立管控，让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。
根据本申请的一些实施例，可选地，激光焊接铜嘴43的表面开设：气体入口6，气体入口6与进气口1通过进气通道2相通；气体除尘口7，气体除尘口7与出气口3通过抽气通道4相通；吹气设备，具体用于通过气体入口6，经由进气通道2向进气口1进行吹气；吸气设备，具体用于通过气体除尘口7，经由 抽气通道4从出气口3进行抽气。
本申请实施例的技术方案中，在吹气设备的作用下，可以直接引导气流从气体入口6经由进气通道2流向进气口1，然后经由激光通道流向出气口3。并且在吸气设备的作用下，可以直接引导气流从出气口3经由抽气通道4流向气体除尘口7。
根据本申请的一些实施例，可选地，吹气设备位于焊接辅助工位的一侧，吸气设备位于焊接辅助工位的另一侧。
本申请实施例的技术方案中，通过将吹气设备位于焊接辅助工位的一侧，将吸气设备位于所述焊接辅助工位的另一侧，可以减少吹气设备与气体入口6之间、吸气设备与气体除尘口7之间的距离，可以很好地提升吸气除尘的效果，避免焊接粉尘影响焊接品质。
根据本申请的一些实施例，结合图4和图5所示，图4是在激光焊接设备焊接时激光焊接器41、电池模组42、激光焊接铜嘴43等之间的位置关系示意图；图5是图4中激光焊接器41、电池模组42、激光焊接铜嘴43之间的位置关系简图。该激光焊接设备包括：激光焊接器41以及以上任一实施例的激光焊接辅助装置；激光焊接器41设置在激光通道的上方。
可以使用本实施例的激光焊接设备对任何需要焊接的设备进行焊接，以下根据使用本实施例的激光焊接设备对电池模组进行焊接为例进行说明：将电池模组42放置在焊接工位。将激光焊接铜嘴43放置在电池模组42的上方，并且激光焊接铜嘴43的进气口1和出气口3之间形成激光通道，激光通道用于在激光焊接时使激光光束44通过的激光通道。将激光焊接铜嘴43与电池模组42压合，使激光焊接铜嘴43与电池模组42的位置相对固定。打开吹气设备，以通 过进气通道2向进气口1进行吹气。打开吸气设备，以通过抽气通道4从出气口3进行抽气。此时，气流的方向如图5中的虚线箭头所指示。开启激光焊接器41对电池模组42进行焊接。焊接完成之后，先关闭激光焊接器41，再关闭吹气设备和吸气设备。
本申请实施例的技术方案中，由于该实施例的激光焊接设备包括：以上任一实施例的激光焊接铜嘴，所以可以通过将激光焊接铜嘴的进气口和激光焊接铜嘴的出气口设置在同一条直线上，并且上述进气口和上述出气口之间形成用于在激光焊接时使激光通过的激光通道，可以使在使用激光焊接时，保护气体在由进气口流向出气口时能够独立管控，让保护气体在焊接区域形成稳定的平流层，提高焊接保护效果，避免保护气体出现复杂的紊流或者湍流现象，从而可以避免虚焊现象的发生。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (11)

  1. 一种激光焊接铜嘴，其特征在于，具有：
    进气口，用于连通进气通道，以便于在激光焊接时使吹气设备通过所述进气通道向所述进气口进行吹气；
    出气口，用于连通抽气通道，以便于在激光焊接时使吸气设备通过所述抽气通道从所述出气口进行抽气；
    所述进气口的轴与所述出气口的轴在同一条直线上，且所述进气口和所述出气口之间形成用于在激光焊接时使激光通过的激光通道。
  2. 如权利要求1所述的激光焊接铜嘴，其特征在于，所述进气口和所述出气口均至少为两个，且所述进气口与所述出气口一一对应；
    每个所述进气口用于连接不同的所述进气通道；
    与所述进气口一一对应的所述出气口，用于连接不同的所述抽气通道。
  3. 如权利要求2所述的激光焊接铜嘴，其特征在于，所述进气口和所述出气口的个数均为两个。
  4. 如权利要求1至3中任意一项所述的激光焊接铜嘴，其特征在于，所述进气口的截面尺寸小于或等于所述出气口的截面尺寸。
  5. 如权利要求1至3中任意一项所述的激光焊接铜嘴，其特征在于，所述激光焊接铜嘴具有中空的腔体，所述腔体的中空部分形成所述激光通道，用于在激光焊接时使激光通过。
  6. 如权利要求5所述的激光焊接铜嘴，其特征在于，所述进气口和所述出气口均设置于所述腔体的内侧壁。
  7. 如权利要求5所述的激光焊接铜嘴，其特征在于，所述激光焊接铜嘴的表 面开设：
    气体入口，所述气体入口与所述进气口通过所述进气通道相通；
    气体除尘口，所述气体除尘口与所述出气口通过所述抽气通道相通。
  8. 一种激光焊接辅助装置，其特征在于，包括：
    权利要求1至6中任意一项所述的激光焊接铜嘴；
    吹气设备，用于通过所述进气通道向所述进气口进行吹气；
    吸气设备，用于通过所述抽气通道从所述出气口进行抽气。
  9. 如权利要求8所述的激光焊接辅助装置，其特征在于，所述激光焊接铜嘴的表面开设：
    气体入口，所述气体入口与所述进气口通过所述进气通道相通；
    气体除尘口，所述气体除尘口与所述出气口通过所述抽气通道相通；
    所述吹气设备，具体用于通过所述气体入口，经由所述进气通道向所述进气口进行吹气；
    所述吸气设备，具体用于通过所述气体除尘口，经由所述抽气通道从所述出气口进行抽气。
  10. 如权利要求8所述的激光焊接辅助装置，其特征在于，所述吹气设备位于焊接辅助工位的一侧，所述吸气设备位于所述焊接辅助工位的另一侧。
  11. 一种激光焊接设备，其特征在于，包括：激光焊接器以及如权利要求8-10任意一项所述的激光焊接辅助装置；
    所述激光焊接器设置在所述激光通道的上方。
PCT/CN2022/097815 2021-09-26 2022-06-09 激光焊接铜嘴、激光焊接辅助装置及激光焊接设备 Ceased WO2023045408A1 (zh)

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