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CN-224209270-U - Press mounting jig and auxiliary welding equipment

CN224209270UCN 224209270 UCN224209270 UCN 224209270UCN-224209270-U

Abstract

The embodiment of the utility model provides a press-fitting jig and auxiliary welding equipment, and relates to the technical field of batteries. The press-fitting jig comprises a body and a press head, wherein the press head is arranged in the welding process of the press-fitting jig, so that the press head presses the lug on the pole, and the second welding opening is arranged, so that laser can weld the lug and the pole through the second welding opening. The pressure head of the pressure equipment jig can compress the pole lug and the pole post, a saturated welding line molten pool can be formed on the pole lug, the problem of poor welding such as cold welding and perforation is solved, and the welding yield is improved by at least 1% compared with the existing pressure equipment jig.

Inventors

  • CHEN JUNLIN
  • YIN JIN
  • LIN YONGXIANG
  • GU LINGMING
  • MA YUANYUAN
  • Ding Menglan

Assignees

  • 兰钧新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20250415

Claims (10)

  1. 1. The press-fitting jig is characterized by comprising a body, wherein the bottom of the body is provided with at least one boss, a groove is arranged in the boss, the bottom of the boss is provided with at least one first welding opening, and the at least one first welding opening is communicated with the groove; The at least one pressure head is arranged at the bottom of the boss, a second welding opening communicated with the first welding opening is formed in the pressure head, and the pressure head is used for crimping the lug and the pole.
  2. 2. The press-fitting jig according to claim 1, wherein two bosses are provided on the body, and the two bosses are disposed at intervals along the X-axis direction of the body.
  3. 3. The press fitting jig according to claim 1, wherein the bottom of the boss is provided with two press heads, the two press heads extend in the X-axis direction of the body, and the two press heads are disposed at intervals in the Y-axis direction of the body.
  4. 4. The press-fit jig of claim 1, wherein the press-head is a rectangular press-head and the second welding opening is a rectangular opening, so that laser forms a rectangular laser welding mark on the tab through the rectangular opening; rectangular ultrasonic welding marks are also formed on the electrode lugs.
  5. 5. The press-fitting jig according to claim 4, wherein the ultrasonic welding mark has a length L1, the ultrasonic welding mark has a width W1, the indenter has a length L2, and the indenter has a width W2; the length of the second welding opening is L3, the width of the second welding opening is W3, the length of the laser welding mark is L4, and the width of the laser welding mark is W4; Wherein L1 is more than or equal to L2> L3> L4, and W1 is more than or equal to W2> W3> W4.
  6. 6. An auxiliary welding device is characterized by comprising a welding machine; The press-fit jig of any one of claims 1-5, disposed on the welding machine.
  7. 7. The auxiliary welding apparatus according to claim 6, wherein the body of the press-fitting jig is detachably connected to the welding machine.
  8. 8. The auxiliary welding equipment according to claim 7, wherein the body is provided with at least two first connecting holes, the top of the body is provided with a connecting piece, and the connecting piece is provided with at least two second connecting holes corresponding to the at least two first connecting holes; at least two fasteners respectively penetrate through the first connecting hole and the second connecting hole, so that the body, the connecting piece and the welding machine are detachably connected.
  9. 9. The auxiliary welding apparatus as defined in claim 8, wherein said connector is provided with an opening opposite said recess.
  10. 10. The auxiliary welding equipment according to claim 7, wherein the welding machine is further provided with two base clamping grooves for placing the winding cores, the two base clamping grooves are arranged at intervals, and a placement clamping groove is arranged between the two base clamping grooves; the press-fit jig is matched with and arranged above the placement clamping groove.

Description

Press mounting jig and auxiliary welding equipment Technical Field The utility model relates to the technical field of batteries, in particular to a press-fitting jig and auxiliary welding equipment. Background The tab containing the battery core inside the battery is usually small in area, thin in thickness and easy to break. Therefore, the positive electrode tab, the negative electrode tab and the electrode post of the existing lithium battery are generally connected through the adapter plate, that is, the positive electrode tab and the negative electrode tab are welded to the electrode post through the adapter plate before ultrasonic welding of the adapter plate. In addition, the common connection mode among the positive electrode tab, the negative electrode tab and the electrode post of the lithium battery is that the tab is directly connected with the electrode post, namely the positive electrode tab and the negative electrode tab are subjected to ultrasonic flat welding and then subjected to laser welding with the electrode post. In the case of laser welding a tab and a post, there are often welding defects such as a weld failure and a perforation. Disclosure of utility model The utility model aims to provide a press-fit jig and auxiliary welding equipment, which can form a saturated welding line molten pool on a tab and optimize the problems of poor welding such as cold joint, perforation and the like. Embodiments of the utility model may be implemented as follows: In a first aspect, the utility model provides a press-fit jig, which comprises a body, wherein at least one boss is arranged at the bottom of the body, a groove is arranged in the boss, at least one first welding opening is arranged at the bottom of the boss, and the at least one first welding opening is communicated with the groove; The at least one pressure head is arranged at the bottom of the boss, a second welding opening communicated with the first welding opening is formed in the pressure head, and the pressure head is used for crimping the lug and the pole. In an alternative embodiment, the body is provided with two bosses, and the two bosses are arranged at intervals along the X-axis direction of the body. In an alternative embodiment, the bottom of the boss is provided with two pressure heads, the two pressure heads extend along the X-axis direction of the body, and the two pressure heads are arranged at intervals along the Y-axis direction of the body. In an alternative embodiment, the pressure head is a rectangular pressure head, and the second welding opening is a rectangular opening, so that laser forms rectangular laser welding marks on the tab through the rectangular opening; rectangular ultrasonic welding marks are also formed on the electrode lugs. In an alternative embodiment, the length of the ultrasonic welding mark is L1, the width of the ultrasonic welding mark is W1, the length of the pressure head is L2, and the width of the pressure head is W2; the length of the second welding opening is L3, the width of the second welding opening is W3, the length of the laser welding mark is L4, and the width of the laser welding mark is W4; Wherein L1 is more than or equal to L2> L3> L4, and W1 is more than or equal to W2> W3> W4. In a second aspect, the utility model provides an auxiliary welding device, comprising a welding machine; The press-fitting jig according to any one of the foregoing embodiments, the press-fitting jig being disposed on the welding machine. In an alternative embodiment, the body of the press-fitting jig is detachably connected to the welding machine. In an alternative embodiment, the body is provided with at least two first connecting holes, the top of the body is provided with a connecting piece, and the connecting piece is provided with at least two second connecting holes corresponding to the at least two first connecting holes; at least two fasteners respectively penetrate through the first connecting hole and the second connecting hole, so that the body, the connecting piece and the welding machine are detachably connected. In an alternative embodiment, the connector is provided with an opening opposite the recess. In an optional embodiment, two base clamping grooves for placing the winding cores are further formed in the welding machine, the two base clamping grooves are arranged at intervals, and a placement clamping groove is formed between the two base clamping grooves; the press-fit jig is matched with and arranged above the placement clamping groove. The press-fitting jig and the auxiliary welding equipment provided by the embodiment of the utility model have the beneficial effects that: When the welding machine platform drives the press-fitting jig to move downwards, the press-fitting jig with the press head is arranged, so that the press head at the bottom of the boss can press the lug and the pole, and the welding area of the lug is in close contact with the pole. Simultaneously, the weld