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EP-4375005-B1 - WELDING POSITIONING APPARATUS

EP4375005B1EP 4375005 B1EP4375005 B1EP 4375005B1EP-4375005-B1

Inventors

  • LIU, KUN
  • SONG, LEI
  • ZHONG, GUANGCHENG
  • CHEN, XIAOWEN

Dates

Publication Date
20260513
Application Date
20230321

Claims (8)

  1. A welding positioning apparatus (100) for positioning a first component and a second component to be welded, the welding positioning apparatus (100) comprising: a main body (10) penetratingly provided with a welding operation inlet (11); and a press head (20) comprising a connecting end (21) and a positioning end (22) arranged opposite each other, the connecting end (21) being detachably assembled to one side of the main body (10) and communicating with the welding operation inlet (11), and the positioning end (22) pressing the first component against the second component and being provided with a welding operation outlet (221) communicating with a position to be welded; wherein a part of an inner cavity (24) of the press head (20) is constructed to form a welding channel defined with the welding operation inlet (11) and the welding operation outlet (221), and the other part is constructed as a dust collection chamber communicating with the welding channel; and the press head (20) is penetratingly provided with at least one dust removal port (23) communicating with the dust collection chamber, and the dust removal port (23) is used to transfer dust collected in the dust collection chamber during welding; wherein the welding positioning apparatus (100) comprises a bottom plate (40) and at least one dust suction pipe (50), the bottom plate (40) is penetratingly provided with a welding groove (41), the main body (10) is detachably assembled to one side of the bottom plate (40), the welding operation inlet (11) is opposite and communicates with the welding groove (41), and each of the dust suction pipes (50) is jointed and communicates with each of the dust removal ports (23); wherein the first component is constructed as a top cover (200) of a battery cell, the second component is constructed as two connector pieces (300) , welded to the top cover (200), in the battery cell, and two press heads (20) are provided, the two press heads (20) being respectively used to position the two connector pieces (300) onto the top cover (200); wherein two the press heads (20) are assembled to both ends of the main body (10) in a length direction of the top cover (200); wherein two dust suction pipes (50) are provided, the two dust suction pipes (50) being mounted at opposite ends of the bottom plate (40) in the length direction of the top cover (200) and used to limit the main body (10) in the length of the top cover (200); and wherein the welding positioning apparatus (100) further comprises two movable cylinders disposed on the bottom plate (40), the two movable cylinders being mounted on the bottom plate (40) in a width direction of the top cover (200) and clamping or releasing the main body (10) in the width direction of the top cover (200).
  2. The welding positioning apparatus (100) according to claim 1, wherein the welding positioning apparatus (100) comprises an elastic element (30), the elastic element (30) being deformably connected between the main body (10) and the press head (20) in a pressing direction of the press head (20).
  3. The welding positioning apparatus (100) according to claim 1 or 2, wherein two dust suction pipes (50) are provided, one of the dust suction pipes (50) is fitted to one side of the press head (20) in a direction intersecting the welding channel and communicates with the dust collection chamber, and the other of the dust suction pipes (50) is fitted to the main body (10) in a direction parallel to the welding channel and communicates with the dust collection chamber.
  4. The welding positioning apparatus (100) according to claim 1 or 3, wherein the welding positioning apparatus (100) further comprises a position-limit member (60) disposed on the bottom plate (40), the position-limit member (60) being connected between the bottom plate (40) and the main body (10) and used to restrict the main body (10) to the bottom plate (40).
  5. The welding positioning apparatus (100) according to claim 4, wherein the position-limit member (60) is constructed as a first positioning pin protruding from the bottom plate (40), and a first groove matching the first positioning pin is disposed on a surface of the main body (10) facing toward the bottom plate (40).
  6. The welding positioning apparatus (100) according to any one of claims 1-5, wherein the welding positioning apparatus (100) further comprises a first movable member (70) and a second movable member (80) respectively disposed on two sides of the main body (10) in a preset direction (a), and a mounting position with an adjustable spacing in the preset direction (a) is defined between the first movable member (70) and the second movable member (80) and used for mounting the main body (10).
  7. The welding positioning apparatus (100) according to claim 6, wherein the first movable member (70) and the second movable member (80) are both constructed as movable cylinders.
  8. The welding positioning apparatus (100) according to claim 6 or 7, wherein a second positioning pin (71) protrudes from a surface of the first movable member (70) facing toward the main body (10), and a second groove (12) matching the second positioning pin (71) is disposed on a surface of the main body (10) facing toward the first movable member (70); and/or a third positioning pin (81) protrudes from a surface of the second movable member (80) facing toward the main body (10), and a third groove (13) matching the third positioning pin (81) is disposed on a surface of the main body (10) facing toward the second movable member (80).

Description

The present invention refers to the Chinese patent application No. 202222555478.3 filed on September 27, 2022 and entitled "WELDING POSITIONING APPARATUS". Technical Field The present invention relates to the field of battery manufacturing technologies, and in particular to a welding positioning apparatus as specified in any of claims 1-8. Background During manufacturing of a battery cell, connector pieces need to be welded to a top cover, so that tabs in an electrode assembly are led out to electrode terminals on the top cover through the connector pieces to realize the input and output of electrical energy in the battery cell. CN111037093A relates to a welding device. CN113130964A relates to a butterfly welding equipment. In a welding process of the connector pieces and the top cover, dust generated not only affects the welding quality, but also pollutes the battery cell and affects performance of the battery cell. Summary of the Invention The claimed subject-matter is defined by the appended claims. Based on this, it is necessary to provide a welding positioning apparatus for solving the problem that dust generated in the welding process affects welding quality and pollutes a battery cell. In a first aspect, the present invention provides a welding positioning apparatus as specified in any of claims 1-8 for positioning a first component and a second component to be welded. The welding positioning apparatus is defined in claim 1. In the technical solution of this invention the first component is pressed against the second component through the press head to achieve a stable connection between the two, and the welding channel provides a penetration path for a laser beam for laser welding, enabling the laser beam to smoothly reach the welding position of the first component and the second component to achieve smooth welding of the first component and the second component. Moreover, the dust collection chamber communicates with the welding channel, so that the dust collection chamber is capable of collecting dust generated during welding without affecting the welding process, and transferring the dust to the outside of the welding positioning apparatus through the dust removal port, thereby achieving dust removal in the welding process, ensuring a clean welding environment and improving the welding quality. In some embodiments, the welding positioning apparatus comprises an elastic element, the elastic element being deformably connected between the main body and the press head in a pressing direction of the press head. In the technical solution of the embodiments of the present invention the elastic element makes a connection between the first component and the second component more stable, and makes the welding process smoother. In addition, the press head is elastically pressed against the first component and the second component, so that a pressing force of the press head against the first component and the second component is allowed to be adjusted more flexibly, improving stability in positioning. In the technical solution of the embodiments of the present invention the bottom plate is capable of providing a mounting base for the main body. When the main body is detachably assembled to one side of the bottom plate, the welding groove on the bottom plate is opposite and communicates with the welding operation inlet disposed on the main body. Therefore, a laser beam during laser welding is allowed to smoothly enter the welding channel through the welding groove, to realize welding of the first component and the second component. In addition, each dust removal port communicates with an external dust extractor through the dust suction pipe, so that the dust in the dust collection chamber is smoothly discharged under the action of the dust extractor. In some embodiments, two dust suction pipes are provided, one of the dust suction pipes is fitted to one side of the press head in a direction intersecting the welding channel and communicates with the dust collection chamber, and the other of the dust suction pipe is fitted to the main body in a direction parallel to the welding channel and communicates with the dust collection chamber. In the technical solution of the embodiments of the present invention the abovementioned structure enables more thorough removal of the dust in the dust collection chamber, further ensuring a clean welding environment and improving the welding quality. In some embodiments, the welding positioning apparatus further comprises a position-limit member disposed on the bottom plate, the position-limit member being connected between the bottom plate and the main body and used to restrict the main body to the bottom plate. In the technical solution of the embodiments of the present invention the position-limit member enables quick positioning of the main body on the bottom plate and quick and accurate connection between the main body and bottom plate. In some embodiments, the position-l