Changan Automobile 3D glue gun application

08/21/2025

Customer case: Changan Automobile General Factory × Chongqing Hongguang Electromechanical Equipment Co., Ltd

New energy vehicle battery pack 3D dynamic sealing system project

Delivery time: March 14, 2025 16:45 (Friday, the 15th day of the second lunar month, the Year of the Snake)

Project background

Changan Automobile General Plant encountered three-dimensional sealing challenges when mass production of CTP 3.0 battery packs in 2025:

  • The three-dimensional path deviation of the traditional glue gun is reached ±1.2mm, resulting in an average of 38 airtightness failures per week
  • Fluctuations in the thickness of complex adhesive layers ±0.8mm, the annual repair cost exceeded 2 million yuan
  • Multi-axis linkage response delay 0.5 seconds, affecting the cycle efficiency of the production line by 12%

Hongguang 3D dynamic sealing system (five-dimensional collaborative technology)

Patent No.: ZL2025 2 0321548.3 IATF 16949 special certification

(1) HG-3DPro intelligent glue gun system

  • Dynamic compensation of six degrees of freedom: path accuracy <±0.05mm
  • Laser contour following technology: real-time adjustment of glue output ±0.01mL

(2) Hongguang dynamic sealing algorithm

  • 128 sets of surface parameters self-learning: the uniformity of the adhesive layer is improved90%
  • Sub-millisecond motion control: < multi-axis synchronization error0.008°

Implementation milestones

2025.02.22-03.10

S-type complex surface testing

Zero rework record

2025.03.13

Passed VDA6.3 process audit

Zero rework record

2025.03.14

The single-line production capacity exceeded 3,000 sets/day

OEE 99.2%

Comparison of core results

Key IndicatorsOriginal SystemAfter The RenovationInternational Benchmark
3D path accuracy±1.2mm±0.05mm±0.3mm
Air tightness test pass rate91.5%99.997%99.5%
Material utilization82%98.7%95%

“In the S-shaped surface test, it is broad Laser contour following technology The standard deviation of the adhesive layer thickness is only 0.012mm, and the continuous 5000 cycle tests do not trigger any airtightness alarm. “

—— Dr. Chen Lifeng, New Energy Research Institute, Changan Automobile General Factory   

Technology spillover

  • Establish the industry’s first 3D sealing process database, including 127 complex surface parameters
  • Develop a digital twin prediction system to warn of the risk of equipment deviation 3 hours in advance
  • The system supports OPC UA protocol to achieve seamless connection with the factory’s digital main line

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