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CN-224209366-U - Welding tool and battery production equipment

CN224209366UCN 224209366 UCN224209366 UCN 224209366UCN-224209366-U

Abstract

The utility model relates to the technical field of batteries and discloses a welding tool and battery production equipment, wherein the welding tool comprises a first pressing block, a second pressing block and a first pressing block, wherein the first pressing block extends along a first direction, and a plurality of mounting grooves are formed in a first pressure surface at intervals along the first direction; the plurality of pressure components comprise second pressing blocks and elastic pieces, one end of each elastic piece in the second direction is connected with the bottom surface of the corresponding mounting groove, and the other end of each elastic piece in the second direction is connected with the corresponding second pressing block; according to the utility model, the plurality of pressure components are arranged on the first pressing block, the positions of the pressure components correspond to the welding spot positions of the battery cell shell, when the first pressure surface presses the large surface of the shell, the second pressing block presses the welding spot positions of the shell and the top cover under the combined action of the elastic piece and the first pressing block, and in the subsequent welding process, laser can be enabled to act on the welding spot positions efficiently and reliably, so that the phenomenon that the isolating film inside the battery cell is easy to burn when the top cover is welded is greatly reduced.

Inventors

  • Duan Hailang
  • HE RUOFAN
  • Xu Huzhu
  • YANG QIANG

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250516

Claims (10)

  1. 1. Welding fixture having a first direction (X) and a second direction (Y) perpendicular thereto, characterized in that it comprises: a first pressing block (1) extending along the first direction (X), wherein a first pressure surface (101) is formed on one end surface of the first pressing block (1) in the second direction (Y), a plurality of mounting grooves (102) are formed on the first pressure surface (101) at intervals along the first direction (X), and each mounting groove (102) is provided with a bottom surface (1021); The welding tool comprises a plurality of pressure assemblies (2), wherein the pressure assemblies are arranged in one-to-one correspondence with the mounting grooves (102), each pressure assembly (2) comprises a second pressing block (201) and an elastic piece (202), one end of each elastic piece (202) in the second direction (Y) is connected with the corresponding bottom surface (1021) of the mounting groove (102), the other end of each elastic piece (202) in the second direction (Y) is connected with the corresponding second pressing block (201), a second pressure surface (203) is formed by the end face, facing away from the elastic piece (202), of each second pressing block (201), and when the welding tool is in an idle state, the corresponding second pressure surface (203) of the second pressing block (201) is located on one side, facing away from the bottom surface (1021), of the first pressure surface (101).
  2. 2. The welding fixture according to claim 1, wherein the pressure assembly (2) further comprises a limiting piece (204), the limiting piece (204) is arranged in the mounting grooves (102), the bottom surface (1021) of each mounting groove (102) is provided with a through hole (103), the through holes (103) extend along the second direction (Y), the limiting piece (204) extends along the second direction (Y), in the second direction (Y), one end of the limiting piece (204) connected with the second pressing piece (201) is a connecting end (2041), one end, deviating from the second pressing piece (201), is a limiting end (2042), the limiting piece (204) penetrates through the through holes (103), and the limiting piece (204) is in limiting fit with the first pressing piece (1) through the limiting end (2042) of the limiting piece.
  3. 3. The welding fixture according to claim 2, wherein the through hole (103) comprises a first hole section (1031) and a second hole section (1032), in the second direction (Y), the first hole section (1031) and the second hole section (1032) are sequentially arranged along a direction close to the mounting groove (102), the aperture of the first hole section (1031) is larger than that of the second hole section (1032), a limiting surface (1033) is formed on a surface, facing away from the second pressing block (201), of the second hole section (1032), the limiting piece (204) comprises a boss portion (2043), a connecting rod portion (2044) and a screw portion (5) which are sequentially arranged along the limiting end (2042) pointing to the connecting end (2041), the connecting rod portion (2044) is arranged through the through hole (103), the connecting rod portion (4) is connected with the boss portion (2043) and the screw portion (2045), and the limiting piece (204) is connected with the elastic pressing block (2043) through the limiting surface (2043) and the screw portion (2043).
  4. 4. A welding fixture according to claim 3, wherein the elastic member (202) is a wave spring, the connecting rod portion (2044) is arranged on the elastic member (202) in a penetrating manner, one end of the elastic member (202) is in elastic compression fit with the second pressing block (201), and the other end of the elastic member is in elastic compression fit with the wall surface of the mounting groove (102).
  5. 5. The welding fixture according to claim 2, wherein a positioning groove (104) is provided on a wall surface of the mounting groove (102) in the second direction (Y), one end of the elastic member (202) is elastically pressed against the second pressing block (201), and the other end is elastically pressed against an inner wall of the positioning groove (104).
  6. 6. The welding fixture according to any one of claims 1 to 5, further comprising a third direction (Z) perpendicular to the first direction (X) and the second direction (Y), wherein one of the end faces of the first press block (1) in the third direction (Z) is a communication surface (105), the mounting groove (102) is provided at an edge position of the first pressure surface (101) close to the communication surface (105), the mounting groove (102) is provided with a communication opening (106) on the communication surface (105), an avoidance groove (205) is provided at an edge of the second pressure surface (203) close to the communication opening (106), and the avoidance groove (205) has an opening facing both the first direction (X) and the second direction (Y).
  7. 7. Welding tool according to claim 6, characterized in that it further comprises a splash guard (3) extending in the first direction (X), which splash guard (3) is arranged in the communication surface (105) and closes off the communication opening (106), the end surface of the splash guard (3) in the second direction (Y) forming a third abutment surface (301).
  8. 8. Welding fixture according to claim 6, characterized in that the second press block (201) is of mirror symmetry, the second press block (201) having a symmetry plane parallel to the first direction (X) and parallel to the second direction (Y), or in that the second press block (201) is of axial symmetry, the second press block (201) having an axis of symmetry parallel to the second direction (Y).
  9. 9. Welding fixture according to claim 3 or 4, characterized in that the second press block (201) is provided with a threaded through hole (2011), the threaded through hole (2011) extends in the second direction (Y), the threaded through hole (2011) being in threaded connection with the screw part (2045).
  10. 10. A battery production apparatus, characterized by comprising: A carrying platform; The welding fixture according to any one of the two claims 1 to 9, being movably arranged on the bearing table along the second direction (Y), wherein the first pressure surfaces (101) of the two welding fixtures are oppositely arranged, and the space between the two welding fixtures is a clamping space.

Description

Welding tool and battery production equipment Technical Field The utility model relates to the technical field of batteries, in particular to a welding tool and battery production equipment. Background The battery is generally composed of a housing and an electric core disposed inside the housing, the housing being a main component for protecting the electric core, and its welding reliability during the manufacturing process will directly affect the durability and service life of the battery. The shell generally comprises a shell and a top cover arranged on the shell, the shell is connected with the top cover in a same sense welding way, and an accommodating space for accommodating the battery cell is formed by surrounding the shell and the top cover. At present, before the battery cell is placed and is accomplished and need welded casing and top cap, need use anchor clamps to press from both sides casing and battery cell tightly for the upper portion edge of casing and the marginal laminating of top cap, in order to guarantee the reliability of welding process, but because the casing has some machining errors in the manufacturing process unavoidable, make the curb plate of casing have undulant in the thickness of clamp direction, when current anchor clamps press from both sides tight casing, the curb plate of casing can not keep completely to be leveled, the sunken and bellied condition will appear in casing curb plate local position, and then lead to appearing the gap between the upper portion edge of casing and the edge of top cap, laser when welding pierces through this gap easily and destroys the battery cell, and then influences life-span and the operational safety of battery. Disclosure of utility model In view of the above, the utility model provides a welding tool and a battery production device, so as to solve the problem of poor clamping reliability of the existing battery clamp. The utility model provides a welding tool which comprises a first pressing block, a plurality of mounting grooves, a plurality of pressure components and elastic pieces, wherein the first pressing block extends along a first direction, one end surface of the first pressing block in the second direction forms a first pressure surface, the first pressure surface is provided with the mounting grooves at intervals along the first direction, each mounting groove is provided with a bottom surface, the plurality of pressure components are arranged in one-to-one correspondence with the mounting grooves, each pressure component comprises a second pressing block and the elastic pieces, one end of each elastic piece in the second direction is connected with the bottom surface of the corresponding mounting groove, the other end of each elastic piece in the second direction is connected with the corresponding second pressing block, the end surface of each second pressing block, which is away from the elastic piece, forms a second pressure surface, and when the welding tool is in an idle state, the second pressure surface of the corresponding second pressing block is positioned on one side of the first pressure surface, which is away from the bottom surface. The battery clamp has the beneficial effects that the plurality of pressure components are arranged on the first pressing block, the positions of the pressure components correspond to the welding spot positions of the battery cell shell, when the first pressure surface presses the large surface of the shell, the second pressing block presses the welding spot positions of the shell and the top cover under the combined action of the elastic piece and the first pressing block, and the shell at the welding spot positions is tightly attached to the top cover at the moment, so that laser can be enabled to act on the welding spot positions efficiently and reliably in the subsequent welding process, the phenomenon that the isolating film inside the battery cell is easy to burn when the top cover is welded is greatly reduced, and the problem that the clamping reliability of the existing battery clamp is poor is effectively solved. In an alternative embodiment, the pressure component further includes a limiting member, the limiting member is disposed in the mounting grooves, through holes are formed in the bottom surfaces of the mounting grooves, the through holes extend in the second direction, the limiting member extends in the second direction, one end, connected with the second pressing block, of the limiting member is a connecting end, one end, deviating from the second pressing block is a limiting end, of the limiting member is arranged in the through holes in a penetrating mode, and the limiting member is in limiting fit with the first pressing block through the limiting end of the limiting member. The limiting piece has the beneficial effects that the limiting piece is simple and reliable in form, the maximum distance of the first pressing piece extending out of the mounting groove