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CN-224209301-U - Lithium ion battery welding protection device

CN224209301UCN 224209301 UCN224209301 UCN 224209301UCN-224209301-U

Abstract

The utility model provides a lithium ion battery welding protection device, which relates to the technical field of lithium ion battery welding packaging and comprises two symmetrically arranged protective shells, wherein the two protective shells are buckled and installed at the top of a lithium ion battery, the protective shells are of a cuboid shell structure, two side faces close to the lithium ion battery are arranged in a penetrating mode, two welding grooves for welding electrodes on a pole are formed in buckling faces of the protective shells, the two welding grooves buckled together are matched with the periphery of the electrodes, a containing cavity for containing an explosion-proof valve and a liquid injection hole is formed in the middle of the protective shell, when the electrodes are welded on the pole, the two protective shells are buckled together from two sides of the top of the lithium ion battery, the explosion-proof valve and the liquid injection hole are protected by the containing cavity, meanwhile, a shell sealing area between the shell and the top edge of the lithium ion battery is protected by the protective shells, and then the electrodes are placed in the welding grooves, and the pole and the electrodes are welded together.

Inventors

  • ZHU LEI
  • ZHOU GAOFEI
  • MA TIANCHENG
  • ZHANG FEI

Assignees

  • 江西华睿新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20250605

Claims (7)

  1. 1. The lithium ion battery welding protection device is characterized by comprising two symmetrically arranged protective cases (1), wherein the two protective cases (1) are buckled and installed at the top of a lithium ion battery, the protective cases (1) are of a cuboid shell structure, two side faces close to the lithium ion battery are arranged in a penetrating mode, two welding grooves (101) for welding electrodes on poles are formed in buckling faces of the protective cases (1), the two welding grooves (101) buckled together are matched with the periphery of the electrodes, and a containing cavity (102) for containing an explosion-proof valve and a liquid injection hole is formed in the middle of the protective case (1).
  2. 2. The welding protection device for the lithium ion battery according to claim 1, wherein a buffer layer (103) fixed on the inner wall of the protective shell (1) is arranged between the contact surface of the protective shell (1) and the lithium ion battery.
  3. 3. The welding protection device for a lithium ion battery according to claim 2, wherein the buffer layer (103) is made of elastic rubber.
  4. 4. The welding protection device for the lithium ion battery according to claim 2, further comprising a cylinder (2), wherein the output end of the cylinder (2) is fixedly connected with the outer wall of the protective shell (1).
  5. 5. The welding protection device for lithium ion batteries according to claim 4, wherein the included angle between the cylinder (2) and the vertical direction is 45 degrees.
  6. 6. The welding protection device for lithium ion batteries according to claim 4, wherein the cylinder (2) is arranged vertically.
  7. 7. The welding protection device for lithium ion batteries according to claim 4, wherein the cylinder (2) is horizontally arranged.

Description

Lithium ion battery welding protection device Technical Field The utility model relates to the technical field of welding and packaging of lithium ion batteries, in particular to a welding protection device for a lithium ion battery. Background In the existing lithium ion battery processing and manufacturing process, firm connection between battery parts is often required to be realized through laser welding, and common parts required to be laser welded include explosion-proof valves, polar posts, soft connection, shell sealing (also called side sealing or edge sealing), liquid injection holes, modules and the like. In the process of welding the pole and the electrode, the shell is easy to burn by laser, and meanwhile, welding splashes can fall into the liquid injection hole, the burn explosion-proof valve and the like, so that the lithium ion battery welding protection device is provided. Disclosure of utility model In order to solve at least one technical disadvantage, the utility model provides a lithium ion battery welding protection device, which comprises two symmetrically arranged protective cases, wherein the two protective cases are buckled and installed at the top of a lithium ion battery, the protective cases are of a cuboid shell structure, two lateral surfaces close to the lithium ion battery are arranged in a penetrating way, two welding grooves for welding electrodes on a pole are formed in buckling surfaces of the protective cases, the two welding grooves buckled together are matched with the periphery of the electrodes, and a containing cavity for containing an explosion-proof valve and a liquid injection hole is formed in the middle of the protective case. Further, a buffer layer fixed on the inner wall of the protective shell is arranged between the contact surfaces of the protective shell and the lithium ion battery. Preferably, the buffer layer is made of elastic rubber. Further, the device also comprises a cylinder, and the output end of the cylinder is fixedly connected with the outer wall of the protective shell. Preferably, the included angle between the cylinder and the vertical direction is 45 degrees. Preferably, the cylinder is arranged vertically. Preferably, the cylinder is horizontally arranged. The lithium ion battery electrode welding device has the beneficial effects that when electrodes are welded on the electrode posts, the two protective shells are buckled together from two sides of the top of the lithium ion battery, so that the explosion-proof valve and the liquid injection hole are protected by the containing cavity, meanwhile, the shell sealing area between the shell and the top edge of the lithium ion battery is protected by the protective shells, then the electrodes are placed in the welding groove, and the electrode posts and the electrodes are welded together. The realization, functional characteristics and advantages of the present utility model are further described with reference to the accompanying drawings in combination with the embodiments. Drawings Fig. 1 is an isometric view of the entire present utility model. Fig. 2 is an isometric view of the protective case of the present utility model. Fig. 3 is an isometric view of the receiving chamber of the present utility model. In fig. 1 to 3, the corresponding relationship between the part names or lines and the figure numbers is that a protective shell 1, a welding groove 101, a containing cavity 102, a buffer layer 103 and a cylinder 2. Detailed Description Please refer to fig. 1 to 3; the embodiment provides a lithium ion battery welding protection device, including the protective housing 1 that two symmetries set up, the top at lithium ion battery is installed to two protective housing 1 locks, and protective housing 1 is cuboid shell structure, is near two sides of lithium ion battery and is the running through setting, and two welding grooves 101 that are used for welding electrode on the utmost point post have been seted up to protective housing 1's lock face, and two welding grooves 101 that the lock is in the same place agree with the electrode periphery, and the holding chamber 102 that is used for holding explosion-proof valve and annotating the liquid hole has been seted up at protective housing 1's middle part. In the specific implementation, when welding the electrode on the pole, two protecting shells 1 are buckled together from two sides of the top of the lithium ion battery, so that the containing cavity 102 protects the explosion-proof valve and the liquid injection hole, meanwhile, the shell sealing area between the shell and the top edge of the lithium ion battery is protected through the protecting shells 1, and then the electrode is placed in the welding groove 101, and the pole and the electrode are welded together. Further, a buffer layer 103 fixed on the inner wall of the protective shell 1 is arranged between the contact surfaces of the protective shell 1 and the lithium ion battery