As the penetration rate of new energy vehicles continues to rise, the 1000V high-voltage platform has become the industry mainstream. Ultra-fast charging systems consist of energy storage cabinets, charging power stacks, host units, and terminal equipment. With continuously increasing power density and integration, critical connection points inside the equipment—such as copper busbars, high-voltage connectors, PCBs, and liquid cooling pipes—are densely distributed. On mass-production manual assembly lines, traditional tightening tools are facing multiple pain points. Danikor, with its wireless sensor tools at the core, has created a fully linked digital intelligent tightening system, providing a mature and reliable assembly solution for high-voltage fast-charging manufacturing.

I. Four Core Industry Pain Points in Ultra-Fast Charging Assembly

The internal structure of ultra-fast charging equipment is complex, with different modules imposing differentiated high-standard requirements on the tightening process. Traditional operating modes struggle to balance precision, efficiency, and quality control simultaneously.

1. Consistency Challenge: Torque precision requirements are stringent for copper busbar and multi-point grounding connections. Numerous multi-point grounding and copper busbar connections exist in energy storage cabinets, EMS controllers, and transformers. These connections demand high precision and consistency in torque output. Ordinary tools exhibit significant torque fluctuations, making it difficult to ensure uniform and consistent clamping force at every point.

2. Error-Proofing Challenge: With numerous densely distributed screw points, the risk of missed or incorrect tightening is high. Screws are densely distributed inside DC charging power stacks, PCB control boards, and power modules. Manual operations are prone to errors such as missed tightening, repeated tightening, and incorrect tightening. Relying solely on manual re-inspection is inefficient and has a high miss-rate, failing to meet the quality control requirements of large-scale mass production.

3. Anti-Loosening Challenge: Thermal expansion/contraction and operational vibration make residual torque decay difficult to control. Components like power modules, liquid cooling pipes, and high-voltage connectors operate in environments subject to thermal expansion/contraction and vibration over the long term, demanding high resistance to connection loosening. Excessive torque can damage the components, while insufficient torque leads to connection failure. Ordinary tools struggle to precisely control residual torque, failing to guarantee the connection reliability of ultra-fast charging equipment throughout its entire lifecycle.

4. Integration Challenge: Manual workstations have variable layouts, and wired tools lead to rigid deployment and scattered data. Workstations on ultra-fast charging assembly lines are compact with frequently changing layouts. Wired tools, constrained by cables, cannot easily adapt to workstation adjustments and rapid line changes. If wireless tools are adopted, coordinating communication among multiple tools and centralized data collection becomes difficult, often leading to data silos and an inability to interface with the MES system for centralized monitoring and full-chain quality traceability.

II. Danikor Wireless Sensor Tools: A Targeted Solution to Ultra-Fast Charging Assembly Challenges

To address the pain points mentioned above, Danikor, with years of deep expertise in tightening technology, has launched a digital intelligent tightening system centered around wireless sensor tools. This system builds a complete solution for ultra-fast charging assembly, from hardware precision and intelligent error-proofing to direct data connectivity.

1. Self-Developed Small-Module Planetary Gear Technology, Ensuring High-Precision Torque Output. Torque stability originates from a precision transmission system. Danikor has overcome the industry bottleneck in manufacturing small-module gears through its in-house processing system, ensuring the tools deliver highly stable and precise torque output.

• High-Standard Transmission: Overcomes the common drawbacks of large gear modules and wide tolerances found in the market, achieving a combination of high hardness and high strength, suitable for the high-frequency, high-intensity operational demands of ultra-fast charging.

• High-Precision Control: Based on the ISO5393 standard, torque accuracy is controlled within 6σ ±5%, ensuring highly consistent clamping force for copper busbar connections and multi-point grounding, thereby reducing contact resistance and heating risks at the source.

• Full-Angle Dynamic Testing: Tools undergo full-angle testing before leaving the factory to ensure torque output at every stress point remains within the high-precision range, guaranteeing tightening consistency across mass production.

1. Multiple Intelligent Error-Proofing Mechanisms, Shifting from Experience-Driven to Program-Logic Control. For assembly scenarios with densely packed screws, Danikor's wireless sensor tools provide multiple layers of error-proofing protection, minimizing the rate of human error.

• Job Task Mode: Utilizes preset Pset programs to implement screw counting, automatically identifying the operation sequence to eliminate subjective errors like missed or repeated tightening, suitable for mixed operations with various screw specifications.

• Real-Time Process Monitoring: Continuously monitors torque, time, and angle curves. Instantly alerts and blocks upon detecting anomalies such as stripped threads, floating screws, or false torque, shifting quality control forward to the production stage.

• Scanning and Traceability Linkage: The wireless tools have built-in barcode scanning functionality or support external scanners, linking workpiece IDs with tightening results to achieve a one-item-one-code quality closed loop, enabling rapid fault location and traceability.

• Ergonomic Design: Supports a pulse function that effectively counteracts reaction force under high torque, reducing operator fatigue and enhancing stability and comfort during prolonged manual assembly.

2. Wireless and Flexible Deployment, Free from Cable Constraints for Adaptable Workstations. Wireless sensor tools are free from cable constraints, allowing flexible adaptation to compact and frequently changing ultra-fast charging assembly workstations, and supporting rapid line changeovers and layout adjustments. For mass-production manual assembly lines, the network layout fully considers wireless signal coverage design, offering strong anti-interference capabilities. This ensures real-time data transmission stability and on-site performance, avoiding communication conflicts when multiple tools are used concurrently.

III. Direct Data Connection to MES, Breaking Data Silos for Full-Chain Traceability

High-precision tools alone are insufficient to build a complete quality system. Danikor's wireless sensor tools support custom protocols and can directly interface with the client's MES system, uploading workstation-level tightening data in real-time.

1. Real-Time Data Acquisition and Upload: Data including torque, angle, time, tightening curve, workstation information, and tool status are synchronized to the MES in real-time, solving the problems of fragmented data and delayed acquisition in traditional models.

2. Centralized Monitoring and Dashboard Management: Data from multiple wireless tools is aggregated. Managers can monitor the tightening status, yield trends, and abnormal alerts of each workstation in real-time, achieving global visualized control of the production line.

3. Full-Chain Quality Traceability: The tightening data for every screw is linked and stored with the workpiece ID. After a fault occurs, the root cause can be quickly reviewed and pinpointed, providing data support for process optimization and equipment maintenance.

Beyond ultra-fast charging scenarios, this solution has been widely applied in manual, semi-automatic, or automatic assembly scenarios across various manufacturing fields, including automotive general assembly, automotive components, energy storage, and 3C electronics.