Technology

BlueCapCan’s
R&D Center is
located in Suwon, South Korea, to cope with the customer’s requests in manufacturing the test samples.

BCC owns the number of measuring instruments and inspection machines good enough to check the early product verifications and resolve any related tolerance issues directly on-site.

The monthly production capacity is about 50,000 pcs, which meets the initial response to the customer’s demand in R&D and pilot scale project.
  • CauIking & Riveting M/C

  • Welding M/C

  • Short Test M/C

  • Leak Test M/C

  • Breaking pressure & Vent LEAK test M/C

  • 3D Measunng M/C

Research Area on Welding Technology and Assembly Design

  • Research on the limitations of laser welding between dissimilar materials and alloys and the characteristics of parts
  • Research on optimal structural/mechanical assembly and testing for each materials/component
  • Research on value engineering and testing of unit parts
WeIding SkiII
Vent, Terminal Welding technology applied on the socket
Rivet Press Skil
Applicable tO produce Cap assembly as Rivet method for rivet-sealing compression
Clamping Skill
Socket Clamping and apply the inosculation technologyon Cell collector
Laser welding method of dissimilar metals of
secondary battery cap assembly
Technical Field
This technology relates to a laser welding method for different materials of a secondary battery cap assembly,
in which a current terminal made of copper and a terminal plate made of aluminum are joined by
laser welding to form a secondary battery cap assembly.
BCC offers comprehensive consultation services for cap plate and can assembly,
starting from the research and development phase.
By conducting cost analysis, evaluating assemblability, and considering mass producibility, we recommend suitable shapes, structures, And designs for the final cell.

Our coverage extends to the components that make up the assembled cap plate. We excel at bridging The gap between R&D and large-scale manufacturing level, ensuring a smooth transition while upholding consistent quality standards.
R&D on Next-generation of xEV ESS Battery Cap Assembly

BCC focuses on the cap assembly and can business utilized for medium and large-sized batteries,
and conducts technology development and research in accordance with the battery requirements needed in the industrial fields of prismatic, cylindrical, and side terminal cells.

  • Characteristics and performance analysis of raw material selection for cap assembly components (Al, Mn, Co, Ni, Cu, etc.)
  • Research on laser welding technology and utilization technology by each material for cap assembly parts
  • Research on pressing method for the can and cap assembly core parts process
  • Research on the mechanics and structure of assembly between material parts (short, terminal resistance, leakage current, burst pressure, leakage, etc.)
  • Design of pilot development line for prismatic and cylindrical assembly for EV and industrial applications
  • Establishment of quality verification infrastructure with parts suppliers
Development of Unique Technology for Laser Welding

The technology to secure manufacturing efficiency and safety in intermetallic welding technology is evolving.
BCC has been applying metal welding utilizing laser beams based on continuous research and development to secure the core technology of bonding and welding between metals or dissimilar materials for manufacturing battery parts based on the experience and manufacturing technology

  • Research and development of laser welding technology for each type of aluminum alloy
  • Development of optimal quality of laser characteristics, thermal deformation, shrinkage, etc. for each type of aluminum alloy (D.O.E/Power, Speed, FOCUS)
  • Research and development of bonding methods for depth, strength, and deformation between dissimilar metals
Research and Development of Eco-friendly Materials and Product Packaging
  • All materials in compliance to RoHS-ll Hazardous Substances Directives
  • Achieving high return rate and logistics cost reduction with returnable packaging
  • Developing packaging designs that are economical, semi-permanent, and easy to store with a safe packing system for products
  • Development of light-weight materials with excellent water, oil, and chemical resistance
  • Development of heavy-duty packaging and cushioning materials to secure utilization and recovery rates
  • Incorporating eco-friendly materials to reduce waste and environmental pollution

Lib Production machine

Coated Electrodes
Not only the materials and components as it is, BCC can arrange the coated electrodes (either pressed or not), Notched electrodes sheets, or stacked jelly rolls for testing purposes.
ltem Cathode Anode
Active Material NCM/LCP/LFP/LFMP/ Sodium ion Graphite, C/Si-C/LTO
Binder PVDF SBR, CMC
Conductive Additives as request as request
Solvent NMP DI Water
Bare Foil Thickness 10~20um 4.5~12um
Coating Width ~650mm ~650mm
Single-side Coating Weight
(without fOil)
NCM/LCO: 6-30mg/㎠
LFP/LFMP: 6-20m ㎠
4.5-12mg/㎠
CaIendering Width ~ 400mm ~ 400mm
CaIendering Thickness ~ 150um ~ 178um
Compaction Density 2.2~2.4±0.05g/㎤ 1.3~1.6土0.03g/㎤
provides the whole processing machines of
pouch cell assembly line in R&D scale as table-top formats.
Also, BCC can supply the stand-alone machines for the pilot-scale of production. Below is the sample reference for
2~5Ah pouch cell. The specifications will vary according to the customer’s specific requirements.

Pouch Assembly Line - R&D

Punching Z-Stacking Tab Welding Forming Side Sealing Vacuum Sealing Hot Pressing
Cell Capa 2-5 Ah (Cell Size should be equal for all the machines)
M/C Capa 1~4 sheets/min 6 sec/sheet 2ppm 2~4 sheets/min 2ppm 0.5~1ppm 1~2ppm
Dimension
(WxLxH)
600x400x600 500x600x750 300x500x350 600x600x700 400x400x650 700x700x1,000 500x500x600

Pouch Assembly Line - Pilot

Punching Z-Stacking Tab Welding Forming Sealing El Filling Degassing Hot Pressing
Cell Capa 2-5 Ah (Cell Size should be equal for all the machines)
M/C Capa 1~4 sheets/min <0.2mm 2ppm <0.1mm 2ppm 0.5~1ppm 0.5~1ppm 1~2ppm
Dimension
(WxLxH)
2700x1000x2000 1550x1200x2000 1200x1100x2000 2100x1200x2000 1200x1600x2000 1200x1500x2000 900x1100x2000 800x800x2000

Cylindrical Assembly Line - Pilot

Lead Tab Welding
(+)/(-)
Winding (-) Tab Welding Swaging Beading El Filling (+) TAb Welding) Crimping & Sizing
Cell Capa 18650/21700 (Machine to be compatible depending on cell model)
M/C Capa 10 sec/pc 50 sec/pc 8 sec/cell 15 sec/cell 30 sec/cell 3 min/cell 15 sec/cell 60 sec/cell
Dimension
(WxLxH)
800x700x1850 5000x2600x2400 800x800x2000 800x800x2000 800x800x2000 800x800x2000 1500x800x2000 1200x800x2000
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