The invention discloses a laser welding scheme of 18650 aluminum disk, which includes 18650 battery module (4), bus bar (1), aluminum disk (2), U-shaped disc (7). The aluminum disk (2) is welded to the bus bar (1) to form an aluminum disk composite row. Then, the aluminum disk composite row is bonded to the 18650 battery module (4) by glue, and the U-shaped disc (7) is respectively connected with 18650 The positive and negative electrodes of the electric core (3) are connected. Finally, laser welding is carried out on the contact surface between the U-shaped disc (7) and the positive and negative electrodes of the 18650 electric core (3) through the laser welding process to fix the connection between the electric core and the aluminum disk. By adopting the connection scheme of the invention, 18650 electric core and bus bar are connected and conductive through the aluminum plate, and the contact surface between the aluminum plate and the electric core pole ear is wide. The contact surface is welded at will through the laser welding process. The scheme is extremely fast and simple, without the phenomenon of faulty welding and loose welding points, greatly improving the welding yield and welding efficiency, and ensuring the stability of 18650 battery pack.
【技术实现步骤摘要】
18650铝盘激光焊接方案
本专利技术涉及新能源动力电池模组领域,尤其涉及一种18650铝盘激光焊接方案。
技术介绍
随着新能源汽车及储能系统领域的迅速发展,动力电池系统及电池模组的设计对安全性、通用性及成本的考虑越来越高。18650电池模组的焊接方式有很多种,如拴接、激光焊接、电阻焊接、超声波铝丝焊接。目前18650电池模组最常采用的是超声波铝丝焊接方案,包括汇流排、18650电池模组、直径为0.15mm的铝丝,将所述汇流排焊接到所述18650电池模组上,再通过超声波铝丝焊接方法对复合后的18650电池模组进行焊接,连接介质为直径为0.15mm的铝丝,铝丝一端与汇流排连接,另一端与18650电池正/负极连接,以完成18650电池模组的串、并联,完成单个电芯与汇流排的时间为3-4s。但是采用该焊接方案,虚焊不良率高,并且需花费人力物力检测焊接效果,焊接效率低、且铝丝易断,稳定性不高,品质无法保证。
技术实现思路
针对上述现有技术,本专利技术要解决的技术问题是提供一种焊接效率高,且能大大降低焊接不良率的18650铝盘激光焊接方案。为解决上述技术问题,本专利技术提供了一种18650铝盘激光焊接方案,包括18650电池模组、汇流排,铝盘、U形圆片,将所述铝盘焊接到与所述汇流排上,形成铝盘复合排;然后利用胶水将所述铝盘复合排黏结到所述18650电池模组上,将所述U形圆片分别与18650电芯正、负极相连接,再通过激光焊接工艺在所述U形圆片与18650电芯正、负极的接触面进行激光焊接,以固定电 ...
【技术保护点】
1.18650铝盘激光焊接方案,包括18650电池模组、汇流排,铝盘、U形圆片,其特征在于,将所述铝盘焊接到与所述汇流排上,形成铝盘复合排;然后利用胶水将所述铝盘复合排黏结到所述18650电池模组上,将所述U形圆片分别与18650电芯正、负极相连接,再通过激光焊接工艺在所述U形圆片与18650电芯正、负极的接触面上进行激光焊接,固定电芯与铝盘的连接。/n
【技术特征摘要】
1.18650铝盘激光焊接方案,包括18650电池模组、汇流排,铝盘、U形圆片,其特征在于,将所述铝盘焊接到与所述汇流排上,形成铝盘复合排;然后利用胶水将所述铝盘复合排黏结到所述18650电池模组上,将所述U形圆片分别与18650电芯正、负极相连接,再通过激光焊接工艺在所述U形圆片与18650电芯正、负极的接...
【专利技术属性】
技术研发人员:王华文,陆云,郭天兴,
申请(专利权)人:欣旺达电动汽车电池有限公司,
类型:发明
国别省市:广东;44
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