As competition in the global EV battery sector intensifies, structural components are facing clear overcapacity pressure. Under the dual demands of cost reduction and performance improvement, manufacturing efficiency, product quality, and overall cost control have become the decisive factors for competitiveness.
Among various components, riveted battery cap assemblies are widely adopted in EV battery structural systems. As a critical safety-related part, they play a key role throughout the full lifecycle of battery operation.
As a key structural and safety component, riveted battery cap assemblies must meet extremely high reliability requirements. However, manufacturers commonly face several bottlenecks in production:
Battery cap assemblies operate under long-term vibration, thermal cycling, and other harsh conditions, requiring extremely stable sealing performance.
However, traditional welding processes often struggle with consistency, leading to risks such as insufficient weld strength or welding defects. In addition, assembly and welding processes may impact surface flatness, reducing yield during subsequent cell casing welding and increasing overall manufacturing risks.
These issues can ultimately result in electrolyte leakage or even thermal runaway, posing serious safety concerns for EV applications.
Riveted battery cap assemblies are composed of multiple irregular parts assembled through complex riveting processes, requiring high consistency across components.
Conventional production lines typically reach only 800–1000 pcs/h, and are often constrained by limited part compatibility, long changeover time, low efficiency, and unstable yield performance.
As a result, material waste increases while overall production efficiency remains difficult to improve.
Traditional manufacturing setups rely heavily on segmented processes with frequent handling between stations, leading to poor process continuity.
At the same time, quality data is often not captured in real time, making closed-loop quality control difficult. This also weakens traceability and reduces overall production line intelligence and coordination.
As a provider of laser processing and automation solutions, HGLaser focuses on delivering system-level manufacturing solutions for battery cap assembly production.
The company has developed an upgraded fully automated riveted battery cap assembly and testing production line, achieving a breakthrough throughput of over 2400 pcs/h, while ensuring stable qualified yield performance.
Through integrated system innovation, HGLaser provides a manufacturing solution that is highly efficient, precise, and reliable, supporting continuous upgrading of the industry.
This production line integrates the entire manufacturing process into one continuous flow, including flexible automated feeding, inline laser marking and sorting, precision assembly, laser welding, sealing performance testing, and final functional validation.
It delivers targeted optimization for key bottlenecks in battery cap production.
Poor flatness control after welding may lead to issues during delivery to battery cell manufacturers, directly impacting yield rates and battery safety performance.
Self-developed flatness control technology + full-process monitoring + intelligent algorithm control
Process approach:
1. Full-process monitoring across welding, pre-riveting, main riveting, and helium leak testing with optimized parameter control
2. Data-driven algorithm optimization enabling precise adjustment and closed-loop flatness control
Results:
· Cap flatness controlled within 0.05 mm
· Welding process yield ≥ 98%
· Reaching industry-leading performance level
Traditional production lines struggle to adapt to multi-SKU and small-batch manufacturing, resulting in low utilization and frequent downtime caused by changeovers.
Modular architecture + full-model compatibility + high-speed maglev transfer system
Process approach:
1. Adaptive feeding strategies based on material characteristics to reduce misfeeds and interruptions
2. Modular design of fixtures, feeding systems, motion units, and transfer modules to significantly shorten changeover time
3. High-speed maglev transfer system enabling conveying speed up to 2 m/s, positioning accuracy of ±0.02 mm, and single-station payload ≥ 30 kg
Results:
· Compatible with all riveted battery cap models within 280 mm × 80 mm
· Production capacity up to 2400 pcs/h
· Industry-leading throughput performance
The production line effectively addresses key bottlenecks in battery cap manufacturing, enabling stable high-speed welding, precision assembly, and AI-driven inspection capabilities.
It has already been validated in mass production at customer sites and has received strong recognition from leading EV battery structural component manufacturers.
From core laser processing technologies to full-line system integration and closed-loop automation, HGLaser continues to deepen the integration of laser manufacturing and intelligent production systems.
By building tailored, scenario-based solutions for customers, the company provides scalable and highly reliable turnkey production lines for global battery manufacturers.
Moving forward, HGLaser continues to drive EV battery manufacturing toward a future that is safer, more efficient, and more intelligent.
As competition in the global EV battery sector intensifies, structural components are facing clear overcapacity pressure. Under the dual demands of cost reduction and performance improvement, manufacturing efficiency, product quality, and overall cost control have become the decisive factors for competitiveness.
Among various components, riveted battery cap assemblies are widely adopted in EV battery structural systems. As a critical safety-related part, they play a key role throughout the full lifecycle of battery operation.
As a key structural and safety component, riveted battery cap assemblies must meet extremely high reliability requirements. However, manufacturers commonly face several bottlenecks in production:
Battery cap assemblies operate under long-term vibration, thermal cycling, and other harsh conditions, requiring extremely stable sealing performance.
However, traditional welding processes often struggle with consistency, leading to risks such as insufficient weld strength or welding defects. In addition, assembly and welding processes may impact surface flatness, reducing yield during subsequent cell casing welding and increasing overall manufacturing risks.
These issues can ultimately result in electrolyte leakage or even thermal runaway, posing serious safety concerns for EV applications.
Riveted battery cap assemblies are composed of multiple irregular parts assembled through complex riveting processes, requiring high consistency across components.
Conventional production lines typically reach only 800–1000 pcs/h, and are often constrained by limited part compatibility, long changeover time, low efficiency, and unstable yield performance.
As a result, material waste increases while overall production efficiency remains difficult to improve.
Traditional manufacturing setups rely heavily on segmented processes with frequent handling between stations, leading to poor process continuity.
At the same time, quality data is often not captured in real time, making closed-loop quality control difficult. This also weakens traceability and reduces overall production line intelligence and coordination.
As a provider of laser processing and automation solutions, HGLaser focuses on delivering system-level manufacturing solutions for battery cap assembly production.
The company has developed an upgraded fully automated riveted battery cap assembly and testing production line, achieving a breakthrough throughput of over 2400 pcs/h, while ensuring stable qualified yield performance.
Through integrated system innovation, HGLaser provides a manufacturing solution that is highly efficient, precise, and reliable, supporting continuous upgrading of the industry.
This production line integrates the entire manufacturing process into one continuous flow, including flexible automated feeding, inline laser marking and sorting, precision assembly, laser welding, sealing performance testing, and final functional validation.
It delivers targeted optimization for key bottlenecks in battery cap production.
Poor flatness control after welding may lead to issues during delivery to battery cell manufacturers, directly impacting yield rates and battery safety performance.
Self-developed flatness control technology + full-process monitoring + intelligent algorithm control
Process approach:
1. Full-process monitoring across welding, pre-riveting, main riveting, and helium leak testing with optimized parameter control
2. Data-driven algorithm optimization enabling precise adjustment and closed-loop flatness control
Results:
· Cap flatness controlled within 0.05 mm
· Welding process yield ≥ 98%
· Reaching industry-leading performance level
Traditional production lines struggle to adapt to multi-SKU and small-batch manufacturing, resulting in low utilization and frequent downtime caused by changeovers.
Modular architecture + full-model compatibility + high-speed maglev transfer system
Process approach:
1. Adaptive feeding strategies based on material characteristics to reduce misfeeds and interruptions
2. Modular design of fixtures, feeding systems, motion units, and transfer modules to significantly shorten changeover time
3. High-speed maglev transfer system enabling conveying speed up to 2 m/s, positioning accuracy of ±0.02 mm, and single-station payload ≥ 30 kg
Results:
· Compatible with all riveted battery cap models within 280 mm × 80 mm
· Production capacity up to 2400 pcs/h
· Industry-leading throughput performance
The production line effectively addresses key bottlenecks in battery cap manufacturing, enabling stable high-speed welding, precision assembly, and AI-driven inspection capabilities.
It has already been validated in mass production at customer sites and has received strong recognition from leading EV battery structural component manufacturers.
From core laser processing technologies to full-line system integration and closed-loop automation, HGLaser continues to deepen the integration of laser manufacturing and intelligent production systems.
By building tailored, scenario-based solutions for customers, the company provides scalable and highly reliable turnkey production lines for global battery manufacturers.
Moving forward, HGLaser continues to drive EV battery manufacturing toward a future that is safer, more efficient, and more intelligent.
