Copper Slip Cap
Products Description
Copper Slip Cap is a precision metal end-capping and functional enhancement component designed specifically for cylindrical components such as cylindrical lithium batteries, capacitors, and high-voltage connectors. This product is manufactured using high-copper-content environmentally friendly brass through precision stamping, deep drawing, and surface treatment processes. Its core structure is a thin-walled cup-shaped body, which, through precise inner diameter tolerance control, can be pressed or pushed into the end bore of the target cylindrical shell via interference fit or micro-clear clearance sliding fit. It is not merely a simple physical protective cover, but a multifunctional precision engineering component integrating current collection, axial force transmission, internal pressure buffering, sealing enhancement, and structural reinforcement.
Design Advantages
Optimized for Automated Assembly
The Copper End Cap Solder Fittings design considers pickup, positioning, and pressing on automated production lines. A specific chamfer at the opening guides alignment, and the shape design ensures reliable gripping by vacuum chucks or mechanical jaws.
Thermo-Mechanical Coupling Simulation Verification
During the design phase, we used finite element analysis to simulate the stress-strain distribution of the inner cap under the coupled effects of cell expansion force, external clamping force, and operating temperature rise. This optimized Tin Plated Copper End Caps' geometry to prevent fatigue failure caused by stress concentration and ensure stable performance across the entire operating temperature range (-40°C to +85°C).
Multifunctional Integrated Design
Features such as positioning bosses, welding bumps, and venting micropores (to balance internal and external air pressure) can be integrated into the Copper Cap High Pressure OEM, achieving multiple uses and reducing the number of parts.
Production Process
Raw Material Acceptance
H65 brass strip for Copper Pressure Tube Cap Fitting conforming to GB/T 5231-2012 standard is strictly selected.
01
Rough Turning
The outer diameter of the Copper Cap High Pressure OEM is turned using a CNC lathe to form the outer contour.
02
Internal Hole Machining
Precision drilling and boring processes are used to ensure the radial accuracy of the tin-plated copper end caps' inner hole.
03
Hardness Adjustment
For different applications for Copper Cap (press fitting vs. conductivity), heat treatment or tempering is performed to adjust the Vickers hardness to 150-180 HV.
04
Lead-Free Cleaning
An environmentally friendly acidic cleaning solution is used for surface treatment to ensure no lead residue on Copper End Cap Solder Fittings.
05
Application Areas
Power Battery Field
Copper End Cap Solder Fittings are supported by power batteries for new energy vehicles and electric bicycles, used for sealing, conductive connection, and structural fixation of battery terminals and wiring, adapting to the assembly requirements of various power battery modules, and ensuring the safe and stable operation of the power battery system.
Energy Storage Battery Field
Tin-plated copper end caps are supported by household energy storage batteries and industrial energy storage battery systems, used for sealing, conductive connection, and fixation of energy storage battery terminals and wiring, adapting to the long-term stable operation requirements of energy storage batteries, and ensuring the reliability and safety of the energy storage system.
Industrial Battery Field
Copper Cap High Pressure OEM is supported by batteries for industrial equipment and backup power battery systems, used for sealing, conductive connection, and protection of battery terminals and wiring, adapting to the harsh operating environment of industrial equipment, and ensuring stable power supply to industrial battery systems.
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For further information on Copper Slip Cap customization solutions, detailed technical specifications, or to discuss bulk purchasing opportunities, please click "contact us" to connect with us. We will provide one-on-one professional services to help you improve battery system quality and capture the global market.
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