Product Details
Place of Origin: China
Brand Name: HaiChuan
Certification: ISO9001
Model Number: 155
Payment & Shipping Terms
Minimum Order Quantity: 50PCS
Price: $0.5-2/kg
Packaging Details: wooden box
Delivery Time: 10-15days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 10ton per month
Material: |
Nickel |
Shape: |
Custom |
Size: |
Custom |
Application: |
Industry |
MOQ: |
10kg |
Purity: |
High Purity |
Chemical Composition: |
Ni |
Custom Service: |
Accept |
Material: |
Nickel |
Shape: |
Custom |
Size: |
Custom |
Application: |
Industry |
MOQ: |
10kg |
Purity: |
High Purity |
Chemical Composition: |
Ni |
Custom Service: |
Accept |
5M Oblique X-Type Spot Welding Lithium Batteries 21700 Pure Nickel Strip 0.15/0.2mm Center Distance 21.5/23.4mm
Pure nickel strip is commonly used in the construction and assembly of lithium-ion batteries, including the 21700 format. It serves as a vital component for connecting the battery cells and facilitating the flow of current within the battery pack. The nickel strip provides excellent electrical conductivity, corrosion resistance, and mechanical strength, making it an ideal material for this application.
When selecting a pure nickel strip for lithium batteries, it's important to consider the following specifications:
Thickness: The thickness of the nickel strip affects its current-carrying capacity. Thicker strips can handle higher currents but may be less flexible. Common thicknesses for lithium batteries range from 0.1 mm (100 microns) to 0.2 mm (200 microns).
Width: The width of the strip should be chosen to match the specific requirements of the battery pack design. It should be wide enough to ensure sufficient electrical contact and heat dissipation.
Purity: Pure nickel strips are typically made of high-grade nickel with a purity of 99.9% or higher. Lower purity levels may contain impurities that can affect the strip's performance and durability.
Coating: Some nickel strips may have a protective coating to enhance corrosion resistance and prevent oxidation. Popular coating options include nickel-plated, nickel-copper-plated, and nickel-cobalt-plated strips.
Adhesive backing: In certain applications, nickel strips with adhesive backing may be preferred. The adhesive layer allows for easy attachment of the strip to the battery cells during assembly.
When purchasing pure nickel strip for lithium batteries, you can find various suppliers and distributors online or at specialized battery component stores. It's important to ensure that the strip you choose meets the specific requirements of your battery pack design and adheres to safety and quality standards.
Pure nickel strip, specifically designed for use in 21700 lithium batteries, possesses several key characteristics that make it suitable for this application. Here are the main characteristics and applications of pure nickel strip for lithium batteries:
Electrical Conductivity: Pure nickel has excellent electrical conductivity, allowing for efficient flow of current within the battery pack. This characteristic minimizes resistance and ensures optimal performance of the battery.
Corrosion Resistance: Nickel is highly resistant to corrosion, which is crucial in a battery environment where exposure to electrolytes and moisture can occur. Pure nickel strip helps protect the battery cells and maintain their integrity over time.
Mechanical Strength: The nickel strip provides mechanical strength and stability to the battery pack. It helps hold the cells together and withstands the stress and pressure during assembly, operation, and potential mishandling.
High Temperature Resistance: Pure nickel exhibits good thermal stability, making it suitable for applications where lithium batteries may experience elevated temperatures during charging or discharging cycles. It can withstand high temperatures without deforming or losing its electrical properties.
Compatibility: Pure nickel strip is compatible with various lithium battery chemistries, including lithium-ion (Li-ion), lithium-polymer (Li-Po), and lithium iron phosphate (LiFePO4). It can be used in different battery formats, such as 21700, 18650, and others.
Applications of pure nickel strip in 21700 lithium batteries include:
Battery Cell Connections: Nickel strip is used to connect the positive and negative terminals of individual battery cells within the pack. It enables efficient current flow and ensures proper cell-to-cell electrical connection.
Battery Pack Assembly: During the assembly process, the pure nickel strip is welded or spot-welded to the battery cells, creating electrical contacts and forming series or parallel connections. It provides a reliable and durable connection between cells.
Battery Tab Welding: Pure nickel strip is often attached to the battery tabs or terminals, allowing for easy and secure connection to the external components, such as battery management systems (BMS), protection circuits, or external power terminals.
Battery Pack Encapsulation: In some cases, the nickel strip may be used as a part of the battery pack encapsulation process, providing additional structural support and electrical connectivity within the pack.
It's important to note that the specific dimensions, thickness, and coating of the pure nickel strip may vary depending on the battery pack design, required current-carrying capacity, and environmental conditions. Manufacturers and suppliers typically provide nickel strips tailored for lithium battery applications, including the 21700 format.