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CN-119897585-B - Welding process of battery busbar

CN119897585BCN 119897585 BCN119897585 BCN 119897585BCN-119897585-B

Abstract

The invention relates to the technical field of battery busbar welding, and provides a welding process of a battery busbar, which comprises a laser welding head group, a welding box, a welding piece carrying frame, a welding piece positioning component, a welding piece feeding component, a welding mechanism with a monitoring function and a smoke removal cooling component, wherein a carrying frame is arranged in the welding box, the welding piece carrying frame is arranged on the carrying frame in a sliding way, the welding piece positioning component is arranged on the welding piece carrying frame and is used for fixing the battery busbar frame, the welding piece material loading subassembly sets up in the welding case, and the welding piece material loading subassembly is connected with the welding piece carrier for drive welding piece carrier motion, welding mechanism sets up in the welding case, is used for welding the busbar, through above-mentioned technical scheme, has solved the battery busbar welding technology among the prior art, when welding the battery busbar, is difficult to carry out accurate location to the busbar frame in most, easily causes the busbar support to appear warping or the problem of rosin joint.

Inventors

  • ZENG WENSHENG
  • ZENG LILI
  • GUO XIBIAO

Assignees

  • 广东喜德利精密技术有限公司

Dates

Publication Date
20260505
Application Date
20250228

Claims (7)

  1. 1. A welding process of a battery busbar, comprising a laser welding head set (1), characterized in that it further comprises: The welding box (2), a material carrying frame (3) is arranged in the welding box (2); The welding part carrying frame (4), wherein the welding part carrying frame (4) is arranged on the carrying frame (3) in a sliding manner; The welding piece positioning assembly (001) is arranged on the welding piece carrying frame (4) and used for fixing the battery busbar frame; The welding part feeding assembly (002), the welding part feeding assembly (002) is arranged in the welding box (2), and the welding part feeding assembly (002) is connected with the welding part carrying frame (4) and used for driving the welding part carrying frame (4) to move; A welding mechanism (003) with a monitoring function, wherein the welding mechanism (003) is arranged in the welding box (2) and is used for welding the busbar; The smoke-removing cooling component (004), the smoke-removing cooling component (004) is communicated with the welding box (2) and is used for intensively discharging smoke in the welding box (2) and cooling welding spots on the bus bars; The weldment positioning assembly (001) comprises: the two box locating parts are symmetrically arranged on the weldment carrying frame (4) and used for fixing the battery box below the busbar; the two bent positioning parts are symmetrically arranged on the weldment carrying frame (4) in a sliding manner and used for fixing the bus; The pack case positioning portion includes: the first positioning group with the telescopic function is penetrated and arranged on the weldment carrying frame (4) in a sliding manner; The box packing positioning plate (5) is arranged on one side of the first position adjusting group; wherein, the first bit group comprises: the positioning slide bars (6) are arranged in a plurality, the positioning slide bars (6) penetrate through and are arranged on the weldment carrying frame (4) in a sliding manner, and one end of each positioning slide bar (6) is connected with one end of the box packing positioning plate (5); The positioning plate (7) is arranged at the other end of the positioning slide rod (6); The positioning springs (8) are arranged, the positioning springs (8) are in one-to-one correspondence with the positioning slide bars (6), the positioning springs (8) are arranged between the positioning plates (7) and the weldment carrier (4), and the positioning slide bars (6) are positioned in the positioning springs (8); The bent positioning part includes: the height adjusting frame (9), the height adjusting frame (9) is arranged on the weldment carrying frame (4) in a sliding manner, and a plurality of fixing bolts (10) for fixing the height adjusting frame (9) are connected to the weldment carrying frame (4) in a threaded manner; The second position adjusting group penetrates through and is arranged on the height adjusting frame (9) in a sliding manner; The bent positioning plate (11) is arranged on one side of the second adjusting group.
  2. 2. The welding process of battery buss bar according to claim 1, wherein the weldment feeding assembly (002) comprises: the feeding screw rod (12) is rotatably arranged in the welding box (2), and a feeding ball nut group (13) is connected to the feeding screw rod (12) in a threaded manner; The feeding sliding block (14) is arranged in the welding box (2) in a sliding manner, and the feeding sliding block (14) is connected with the feeding ball nut group (13); The feeding motor (15), the feeding motor (15) is arranged on one side of the welding box (2), and the output end of the feeding motor (15) is connected with one end of the feeding screw rod (12); and the feeding positioning frame (16) is arranged between the weldment carrying frame (4) and the feeding sliding block (14).
  3. 3. The welding process of a battery busbar according to claim 2, wherein the welding mechanism (003) includes: the X-axis positioning assembly is arranged on the welding box (2); The Y-axis positioning frame (17), the Y-axis positioning frame (17) is arranged on the X-axis positioning component; the Y-axis positioning assembly is arranged on the Y-axis positioning frame (17); And the welding assembly is arranged on the Y-axis positioning assembly and is used for performing welding operation on the battery busbar.
  4. 4. A welding process for a battery busbar as set forth in claim 3 wherein said X-axis positioning assembly is identical in construction to said Y-axis positioning assembly; The X-axis positioning assembly and the Y-axis positioning assembly both comprise: The positioning screw rod (18) is arranged on the welding box (2) in a rotating mode, and the positioning screw rod (18) in the Y-axis positioning assembly is arranged on the Y-axis positioning frame (17) in a rotating mode; the positioning ball nut group (19), the positioning ball nut group (19) is connected to the positioning screw rod (18) through threads; the positioning motor (20) is arranged on one side of the welding box (2), the positioning motor (20) in the Y-axis positioning assembly is arranged on one side of the Y-axis positioning frame (17), and the output end of the positioning motor (20) is connected with one end of the adjacent positioning screw rod (18); The limiting slide rod (21) is arranged on the welding box (2), and the limiting slide rod (21) in the Y-axis positioning assembly is arranged on the Y-axis positioning frame (17); The positioning sliding block (22) is arranged on the limiting sliding rod (21) in a sliding manner, and the positioning sliding block (22) is connected with the adjacent positioning ball nut group (19); the Y-axis positioning frame (17) is arranged on the positioning sliding block (22) in the X-axis positioning assembly; The welding assembly is arranged on the positioning sliding block (22) in the Y-axis positioning assembly.
  5. 5. The welding process of a battery buss bar of claim 4, wherein the welding assembly comprises: A Z-axis positioning plate (23), wherein the Z-axis positioning plate (23) is arranged on the positioning slide block (22) in the Y-axis positioning assembly; A Z-axis positioning cylinder (24), wherein the Z-axis positioning cylinder (24) is arranged on the Z-axis positioning plate (23); the welding plate (25) is arranged at the output end of the Z-axis positioning cylinder (24), and the laser welding head group (1) is arranged on the welding plate (25); The welding monitoring camera (26), welding monitoring camera (26) are installed on welded plate (25), welding monitoring camera (26) are located one side of laser welding head group (1).
  6. 6. The welding process of battery buss bar of claim 5, wherein the smoke abatement cooling assembly (004) comprises: the smoke removing pipe (27) is communicated with the welding box (2); -a smoke abatement fan (28), the smoke abatement fan (28) being mounted within the smoke abatement tube (27); the cooling pipe (29), cooling pipe (29) intercommunication sets up on welding case (2), one end of cooling pipe (29) runs through to one side of weldment carrier (4).
  7. 7. The welding process of the battery busbar according to claim 6, wherein a feeding through hole is formed in one side of the welding box (2), a feeding sealing plate (30) is arranged on one side of the weldment carrier (4), the feeding sealing plate (30) is in sealing contact with the feeding through hole, an observation hole is further formed in one side of the welding box (2), and an observation window (31) is arranged in the observation hole.

Description

Welding process of battery busbar Technical Field The invention relates to the technical field of battery busbar welding, in particular to a welding process of a battery busbar. Background In the age of rapid development of technology at present, a battery is taken as an important energy storage and conversion device, plays an indispensable role in a plurality of fields, and directly influences the operation effect of the whole system from a power source of an electric automobile to a power supply unit of portable electronic equipment to the application of a large-scale energy storage system. The battery busbar is used as a key component for connecting a battery monomer, a module or a battery pack, and bears important tasks of current transmission and distribution, however, the welding quality of the battery busbar is directly related to the electrical property, the heat management property and the overall safety of the battery, and the good welding process can effectively reduce the connection resistance, reduce the energy loss, improve the charge and discharge efficiency of the battery and simultaneously ensure the stability and the reliability of the battery pack in the long-term use process. At present, for welding battery bus bars, common welding processes of the battery bus bars comprise resistance welding, ultrasonic welding and the like, although the resistance welding has the advantages of simple equipment and convenient operation, the welding is realized through resistance heat generated at a welding part contact part by current, the problems of unstable quality of a welding joint, easy splashing or bus bar deformation and the like exist, the ultrasonic welding is transmitted to the surfaces of two objects to be welded by utilizing high-frequency vibration waves, and the objects are mutually rubbed under the condition of pressurization to form fusion between molecular layers. Disclosure of Invention The invention provides a welding process of a battery busbar, which is used for solving the problems that in the prior art, when the battery busbar is welded, the accurate positioning of a busbar frame is difficult to carry out, and the busbar frame is easy to deform or cause cold welding. The welding process of the battery busbar comprises a laser welding head set, a welding box, a weldment carrier, a weldment positioning assembly, a weldment feeding assembly, a welding mechanism with a monitoring function and a smoke removal cooling assembly, wherein the welding mechanism is arranged on the welding box; A material carrying frame is arranged in the welding box; The weldment carrying frame is arranged on the carrying frame in a sliding manner; the welding piece positioning assembly is arranged on the welding piece carrying rack and used for fixing the battery busbar rack; the welding part feeding assembly is arranged in the welding box and connected with the welding part carrying frame and used for driving the welding part carrying frame to move; The welding mechanism is arranged in the welding box and is used for welding the busbar; The smoke removal cooling component is communicated with the welding box and is used for intensively discharging smoke in the welding box and cooling welding spots on the busbar. As the preferable technical scheme of the application, the weldment positioning assembly comprises a box packing positioning part and a bent positioning part; The two box locating parts are symmetrically arranged on the weldment carrying frame and used for fixing the battery box below the busbar; The welding piece carrying rack comprises two welding piece carrying racks, wherein two welding piece carrying racks are arranged on the welding piece carrying racks, and two welding piece carrying racks are arranged on the welding piece carrying racks. The box positioning part comprises a first positioning group with a telescopic function and a box positioning plate; the first positioning group penetrates through and is arranged on the weldment carrying frame in a sliding manner; The box packing positioning plate is arranged on one side of the first position adjusting group; The first positioning group comprises a positioning sliding rod, a positioning plate and a positioning spring; The positioning slide bars are arranged in a plurality, penetrate through and are arranged on the weldment carrying frame in a sliding manner, and one end of each positioning slide bar is connected with one end of the packing box positioning plate; the positioning plate is arranged at the other end of the positioning slide bar; the positioning springs are arranged in a plurality, the positioning springs correspond to the positioning sliding rods one by one, the positioning springs are arranged between the positioning plates and the weldment carrying frames, and the positioning sliding rods are located in the positioning springs. On the basis of the scheme, the bent positioning part comprises a height adjusting frame, a secon