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Double-beam laser welding equipment and method used for power battery welding

A power battery, laser welding technology

Active Publication Date: 2018-02-02
深圳市大族锂电智能装备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, two lasers need to be prepared in the above technology, which increases the cost of manufacturing and maintenance

Method used

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  • Double-beam laser welding equipment and method used for power battery welding
  • Double-beam laser welding equipment and method used for power battery welding
  • Double-beam laser welding equipment and method used for power battery welding

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Embodiment Construction

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] figure 1 It shows a schematic structural view of the double-beam laser welding equipment used for power battery welding according to the present invention, which includes:

[0027] Welding light source 1, which is used to provide welding laser, the welding light source is preferably a 6KW continuous fiber laser, and the welding light source 1 can also include a collimation device, preferably, the diameter of the collimation device is 150mm;

[0028] Focusing beam splitting system 2, which is used to focus the welding laser, and after focusing the welding laser, divide the welding laser into two laser beams; through the two laser beams, the power battery module side plate 11 and The surface to be welded of the en...

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Abstract

The invention discloses double-beam laser welding equipment and method used for power battery welding. The equipment comprises a welding light source used for providing welding lasers and a focusing beam splitting system used for focusing welding lasers; after being focused, the welding lasers are divided into two laser beams; a power battery module end plate and a side plate are welded through the two laser beams; and the focusing beam splitting system comprises a focusing lens and an optical beam splitter mirror. According to the double-beam laser welding equipment and method, single-beam lasers emitted by one laser device is divided by the optical beam splitter mirror into two light beams with a certain energy ratio and distance, and cost is reduced; and meanwhile, a parallel manner isadopted by the two light beams for welding, the small hole size can be improved to the maximum degree, the effect of being small in number of air holes in a welding seam is achieved, the welding stability is improved, the welding seam strength is higher, and the welding effect is guaranteed.

Description

technical field [0001] The invention relates to the field of laser welding, in particular to a double-beam laser welding equipment and method for welding power battery modules. Background technique [0002] When using a single beam for welding of unequal-thickness plate pairs (such as unequal-thickness aluminum alloy plates, etc.), since the laser spot size is small and must fall on the edge of the two plates at the same time, the position of the spot is difficult to control. There are certain deficiencies in thick aluminum alloy sheets. [0003] In order to solve the limitations of conventional single-beam laser welding, two lasers are used to work simultaneously in the prior art, so as to improve and enhance the adaptability of laser welding to assembly accuracy. However, in the above technique, two lasers need to be prepared, which increases manufacturing and maintenance costs. [0004] Therefore, it is necessary to provide a double-beam laser welding equipment and meth...

Claims

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Application Information

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IPC IPC(8): B23K26/24B23K26/067B23K26/064B23K101/36
CPCB23K26/064B23K26/0676B23K26/24B23K2101/36
Inventor 钱德宇刘昊徐作斌胡勇高云峰
Owner 深圳市大族锂电智能装备有限公司
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