Company News

46 series large cylindrical/ blade battery technology evolution to break the laser welding "difficulty"

2023-08-11
Summary
 
The production iteration of lithium batteries has brought clear & ldquo; incremental & rdquo; opportunity,Can catch the technical leading time window,Coupling with laser innovation technology and existing equipment,will form a new value source of lithium battery intelligent equipment enterprises。
 
Laser is with its high energy density、High accuracy、High flexibility and other advantages,It has become an important & ldquo; weapon & rdquo;。
 
Current,Laser processing technology is widely used in all aspects of lithium battery manufacturing,Including polar cutting、Pole ear welding、Transit welding、Stream disk welding、Seal welding、Sealing nail welding、Core cleaning、Code of the shell、Convergence welding、Wire welding、outer vibration welding, etc.。With the high growth rate of the lithium battery industry and a more precise manufacturing requirements,Lithium battery laser equipment market demand further increases。
 
Data display,In 2022, my country's lithium battery laser equipment market size is about 12.5 billion yuan,It is expected that it will increase to 18 billion yuan by 2025,Compound annual growth rate exceeds 13%。
 
It is worth noting is,Focusing on product performance、Quality Quality、Production efficiency、improvement of good rate,Lithium battery enterprises around & ldquo; cylindrical、square、soft bag & rdquo; The whole category battery packaging process is continuously iterated and upgraded。From the current large cylinder、blade battery、The morphological evolution of the large soft bag can be seen。
 
This also means,The production iteration of lithium batteries has brought clear & ldquo; incremental & rdquo; opportunity,Can catch the technical leading time window,Coupling with laser innovation technology and existing equipment,will form a new value source of lithium battery intelligent equipment enterprises。
 
High workers lithium battery Note,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.深耕锂电池自动化设备多年,Always guided technological innovation,Laser welding pain points and difficult points for the entire category battery of the industry,Continuous increase in R & D investment。Recently, a series of breakthrough progress has been achieved in the laser welding process and equipment of key processes。
 

overcome the large cylindrical cell laser welding & ldquo; bottleneck & rdquo;
 
Both the unit volume is higher、More energy density、The output power is stronger、The advantages of lower manufacturing costs,The 46 -series cylindrical battery represented by the model 4680 is called a large cylindrical battery,It is considered to be the development direction of the next -generation cylindrical battery。
 
High -efficiency High -precision assembly line is the key link of the large cylinder production line,Development of large cylindrical battery high -speed fully automatic assembly lines have become the goal pursued by various lithium batteries at home and abroad。
 
But,Currently large cylindrical positive/negative pole flow disk、The welding process of penetrating welding through the shell is a process with relatively long welding time in the entire assembly body,It is also one of the bottleneck technology of large cylindrical high -speed assembly line。
 
For this,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.开发了基于飞行控制的激光焊接技术及装备,and applied to a streaming disk/all -ear penetrating welding,Effectively reduced the interval and stay time,greatly improved the welding efficiency of the entire line。
 

The & ldquo; key & rdquo; Yes:

1、Realize high -speed rotation of the turntable through the turntable structure,During the rotation process,The adaptive follow -up of the mirror system follows the turntable rotation to implement dynamic flight welding。

 
Flight Tower Structure
 
2、Multi -trajectory for flying welding、Multi -angle real -time trajectory path tracking and repeated positioning accuracy requirements are high,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.自研高速旋转位置高精度动态补偿算法和飞行焊控制系统,The problem of solving the trajectory welding and welding graphic distortion at high speed。

 
Flight Laser Welding Control System
 
Flowing laser welding effect
 
This technology can greatly reduce the amount of laser use,The welding speed of the set flow can reach 600mm/s above,Meet the welding requirements of ultra -high -speed large cylindrical assembly lines above 200ppm。In addition,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.开发了基于不同光源的Streaming tray laser welding process series technology,such as yag、QCW、ring -shaped laser、High -power green light laser, etc.,can all realize high -speed welding of positive/negative stream disks,Meet the customized needs of different customers。
 
Streaming tray laser welding process series technology
 
Based on the above technology,July 18,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.为国内B客户研发与设计制造的120PPM 4680高速智能装配线已正式通过客户验收成功交付。

 
 
Breaking the blade battery side side continuous welding & ldquo; pain point & rdquo;
 
A special form of a blade battery as a square aluminum shell battery,Significantly improves energy density space due to its thinness,The development trend branch of becoming a square battery。
 
During the manufacturing process,The top cover is a square aluminum shell battery and the hardest in blade batteries、The most critical welding process。
 
In many welding processes,The size of the seal weld is the longest,Welding takes the longest time,A very high requirements for process stability and process reliability,directly affects the overall efficiency and yield of the entire assembly line。
 
According to the battery size and structural form,Founded aluminum -shell battery top cover seal welding can be divided into two processes: top cover welding and top cover -side welding。
 
Conventional blade battery top cover uses side welding,Welding method is segmented welding,Welded long and short edges by segmented by a single laser or two laser through configuration,Welding long and short -sides to achieve full welding。But,This kind of welding method is easy to control,But the efficiency is low、Excessive cost,It is difficult to meet high -efficiency production needs。
 
The current dilemma in the industry is,Although continuous welding on the side can significantly improve the welding efficiency,But relative to segmented welding,The welding trajectory is complicated,Difficulty in control。

 
Stealing diagram of continuous welding of blade batteries
 

For the above technical problems,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.开发了以下技术,Solved the continuous welding problem of the side cover of the blade battery:
 
1、Continuous laser light sources with ring -shaped light spots to ensure the depth consistency and stability of the welds;
 
2、Based on optimizing the laser welding process,Self -developed & ldquo; 4+1 & rdquo; Movement speed and laser energy micro -interpolation control algorithm,Development side continuous welding control system,With high response hardware equipment,Realize the height of laser energy and motion trajectory。

 
Side continuous welding system and laser energy matching algorithm
 
From the effect of the welding effect,The straight side of the weld and the corner surface is smooth and full,Welding sewing deep stability,The average welding speed can reach 300mm/s above。Based on this,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.开发了高速激光连续侧焊模块和blade battery顶盖高速激光侧边焊接机,Welding efficiency increases more than 3-5 times more than conventional segmented welding machines。
 
Side continuous welding effect
 
Constant welding equipment for the laser side of the top cover
 

square battery high -speed seal welding technology & ldquo; related & rdquo;
 
As the mainstream direction of domestic lithium batteries,square aluminum shell battery has high strength、Internal resistance、Long life、High spatial utilization characteristics。Current,Conventional size square aluminum shell battery mainly uses the top cover welding process,Use a linear motor driver,Welding speed reaches 150-200mm/s,Meeting single-line production capacity 10-15ppm requirements。
 
But,With the efficiency of the production efficiency of battery factories, it continues to improve,The single -line efficiency of the battery assembly line moves to the 20ppm pass,higher requirements for the welding speed and yield of the top cover,Welding speed needs to be increased to above 300mm/s。
 
How to ensure that in the state of ultra -high speed,The stability and welding quality of the laser welding process becomes a key research direction in the industry。Especially in the corner position of the welding track,Ridge Ride Rate R usually less than 5mm,Excessive acceleration of the rounded corner at ultra -high speed,It is easy to cause drum bags、Defects such as lack of welding。
 
For the above difficulties,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.开发了超高速激光立焊模块和超高速顶盖立焊激光焊接专机,Equipment efficiency meets the capacity of above 25ppm,The average welding speed reaches 350mm/s,Welded outside sighting,Welding sewing deep consistency is high,Product yield reaches 99.6%。

 
Battery top cover ultra -high -speed laser standing effect diagram
 
On the specific implementation path:
 
1、Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.通过全面提升电机性能和优化机构设计高速运动位置相应能力和运行稳定性;
 
2、Self-research & ldquo; Laser energy-speed adaptive matching & rdquo; control algorithm,and developed interactive energy-speed matching software,Real -time changes to the power with the curve drawn by the algorithm fitting,Realized the uniform laser energy output of the entire welding process; 3、Developed ring -shaped light spots laser seal welding process,Maximum improvement of the stability of the laser welding process。
 
Top cover standing welding laser welding equipment
 
Continuous innovation Pay attention to the development of laser technology
 
Realizing the innovation of the above laser welding process and equipment,源于Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.对于锂电装备领域激光应用的高度重视。
 
It is reported,To meet the important demands of laser processing technology for new energy battery production equipment,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.组建了以光学博士领衔的高素质高水平激光技术研发团队,and established 800㎡ laser and visual research and development laboratory,Equipped with various types of laser R & D and test equipment values ​​10 million+。
 
Current,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.已形成了激光装备与控制软件开发、Simulation simulation analysis、R & D laser processing technology、Sample analysis testing and other comprehensive laser technology research and development capabilities,It is an important & ldquo; weapon & rdquo;。

 
Laser laboratory and independent development laser equipment and software
 
To sum up,Alemanha Euro 2024 Jornadas was Founded in May 2004. It is a national high-tech prive entegration r & d, design, Manufactulaing SA Les service. It caurrently has two wholly-wened subsidiaaries, xiangyang zhongji chuangzhan intelligent techNOLOGY Co., LTDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD . And wuhan zhitong vision technology Co., LTD., and a Branch in sunge.将基于在新能源电池激光焊接技术的突破,Combined with it to assemble automated the entire line technology in the mid -section,Further increase profitability value in terms of product matrix and innovative technology,Provide customers with more comprehensive automated production equipment solutions,Fully embrace the two super tracks of power and energy storage。