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Laser welding equipment for power battery anti-explosion valve

A laser welding and power battery technology, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of restricting the development of China's power battery manufacturing industry, product accuracy, and stable welding yield that cannot meet market demand. Achieve the effect of fine laser control, uniform welding seam, and optimal design of optical fiber transmission system

Pending Publication Date: 2018-04-20
何琼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, domestic equipment cannot meet market demand in terms of product accuracy, stability, welding yield, etc., mainly relying on foreign technology, which greatly limits the development of China's power battery manufacturing industry

Method used

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  • Laser welding equipment for power battery anti-explosion valve
  • Laser welding equipment for power battery anti-explosion valve
  • Laser welding equipment for power battery anti-explosion valve

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Embodiment Construction

[0024] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the invention.

[0025] like figure 1 The embodiment shown is a laser welding equipment for a power battery explosion-proof valve, including a fiber laser welding head 1, a welding fixture 2, a welding table 3, a laser movement mechanism 4, a control system 5, a monitoring system 6, and a water-cooled coupling system for an optical fiber end 7.

[0026] The welding fixture 2 is provided with a positioning groove 2b, and a vacuum suction nozzle 2c is arranged in the middle of the positioning groove 2b.

[0027] The fiber laser welding head 1 includes a composite lens focusing coupling system and an optical fiber output focusing system. The composite lens focusing coupling system is composed of a composite lens group, and the optica...

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Abstract

The invention discloses laser welding equipment for a power battery anti-explosion valve. The laser welding equipment comprises an optical fiber laser welding head (1), a welding fixture (2) and a welding bench (3), wherein a positioning groove (2b) is formed in a movable block (2a) of the welding fixture (2), and a vacuum nozzle (2c) is arranged in the positioning groove (2b); the optical fiber laser welding head (1) comprises a composite lens focused coupling system and an optical fiber output focusing system, the composite lens focused coupling system is composed of a composite lens group,and the optical fiber output focusing system is composed of a collimating lens group and a focusing lens group. According to the laser welding equipment, an optical fiber transmission system can be optimally designed, so that the power density of high-power pulse solid laser meets the laser welding requirement after optical fiber transmission, flexible light guide of a pulse solid laser welding machine is realized, fine control over laser is realized, welding seams of the power battery anti-explosion valve are uniform, and bad phenomena of false welding, weld penetration, weld misalignment andthe like do not occur.

Description

technical field [0001] The invention relates to a laser welding device, in particular to a laser welding device for an explosion-proof valve of a power battery. Background technique [0002] In recent years, with the rapid development of electric vehicles in my country, how to solve the safety problem of electric vehicles is a key point and difficulty that must be broken through for the healthy development of the new energy vehicle industry. The battery itself should not bulge, leak, rupture, catch fire, emit smoke, or explode. Once the thermal runaway of the battery cell occurs, electrolyte leakage, fire and combustion may occur. The battery explosion-proof safety valve used in the lithium battery can effectively prevent the battery from exploding when the battery is thermally out of control. Excessive height may cause an explosion. Thereby ensuring battery safety. [0003] The explosion-proof valve of the power battery is an important part to ensure the safety of the b...

Claims

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Application Information

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IPC IPC(8): B23K26/21B23K26/70B23K26/064B23K26/08
CPCB23K26/0648B23K26/0884B23K26/21B23K26/702B23K26/703
Inventor 何琼杨晟吴轩
Owner 何琼
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