-
E-mail
ddxfvgdwm@163.com
-
Phone
13202009968
-
Address
No. 8 Lvyuan Avenue, Xinfeng Industrial Park, Ganzhou City, Jiangxi Province
Product Categories
Ganzhou Big Brother Cutting Tools Co., Ltd
Lithium cutting tools
NegotiableUpdate on 01/05
- Model
- Nature of the Manufacturer
- Producers
- Product Category
- Place of Origin
Overview
Lithium cutting tools are high-precision cutting tools developed specifically for the lithium battery industry, focusing on the processing of core materials such as lithium electrode sheets, battery separators, and battery cell structural components, and running through the entire production process of lithium batteries. Through material innovation and process optimization, solving problems such as excessive burrs, metal pollution, and short lifespan of traditional cutting tools, ensuring battery safety, consistency, and production efficiency, is a key support for the development of the lithium battery industry.
Product Details
Lithium cutting toolsProduct Introduction and Performance
Lithium cutting toolsIt is a high-precision cutting tool specially developed for the lithium battery industry, focusing on the processing of core materials such as lithium electrode sheets, battery separators, and cell structural components, and running through the entire production process of lithium batteries. Through material innovation and process optimization, solving problems such as excessive burrs, metal pollution, and short lifespan of traditional cutting tools, ensuring battery safety, consistency, and production efficiency, is a key support for the development of the lithium battery industry.
1、 Core product classification and application
According to the production process of lithium batteries,Lithium cutting toolsIt can be divided into three categories, accurately matching different processing scenarios to form a full process solution.
1. Special cutting tool for polarizer slitting
High precision slitting is used for positive and negative electrode plates, as well as copper and aluminum foil substrates. The slitting quality directly affects the burr height of the electrode plate and battery safety, and is the core tool for electrode plate preparation.
Mainstream types: ultra-fine grain hard alloy disc cutter, upper and lower bite type slitting cutter group, common specifications such as 100 × 65 × 0.7 polarizer upper cutter, 130 × 70 × 3.0 lower cutter.
Core application: Adapt to mainstream slitting devices to meet the processing needs of high-energy density batteries.
2. Specialized cutting tools for battery cells
Targeting the punching and shape cutting of battery cell tabs, solving the problems of traditional tool sticking and dust generation, and adapting to the processing of laminated battery cells, using special materials to reduce pollution and improve battery cell quality.
Mainstream types: Extreme ear punching cutting blade die, PTFE composite cutting blade group, the blade die is specially treated to ensure no deformation.
Core application: Lithium battery cutting and stacking machine, with a single life of over 1 million cycles, supporting more than 10 mold repairs.
3. Processing tools for battery pack structural components
Used for milling and drilling structural components such as battery pack shells and water-cooled plates, balancing efficiency and accuracy, ensuring lightweight and sealing of battery packs, and adapting to materials such as aluminum alloy and carbon fiber.
Mainstream types: Nano coated graphite milling cutter, aluminum alloy specific end milling cutter, TiAlN coating enhances wear resistance.
Core application: Suitable for CNC machining centers, the metal removal rate is increased by more than 250% compared to traditional cutting tools.
2、 Core Performance Analysis
Lithium cutting toolsThe performance advantages of the battery are reflected in three dimensions: material foundation, precision control, and high efficiency and durability, supporting high-quality and high-efficiency battery production.
1. Material basic performance: dual breakthrough in hardness and anti fouling
By strengthening with special materials and processes, precise matching of hardness, wear resistance, pollution prevention and other properties can be achieved:
Ultra high hardness and wear resistance: Ultra fine grain hard alloy with a hardness of HRC 92-95 is used for the pole piece slitting tool, and its wear resistance is 3-5 times that of ordinary high-speed steel, with a lifespan increase of 6 times;
Anti sticking and anti pollution to ensure purity: The battery cutting blade is coated with a special layer, with a surface friction coefficient as low as 0.04, and the metal impurity content of the battery cell is controlled below 5ppm;
Multi material adaptation: The coating of the structural component processing knife has good thermal stability and stable performance at 200-300 ℃, making it suitable for processing various materials.
2. Precision control performance: Micron level control reduces production risks
Precision machining and testing throughout the entire process, controlling accuracy at the micrometer level to avoid production risks:
High precision cutting edge: The thickness tolerance of the polarizer slitting blade is ± 0.002mm, and the slitting burr is ≤ 12 μ m, far below the industry standard of 20 μ m;
Precise punching: The surface roughness of the battery cell die is Ra0.04 μ m, the fitting gap is 2 μ m, and the tolerance of the pole ear size is ≤ 0.01mm;
Stable operation: The axial runout of the structural component machining tool is ≤ 0.01mm, there is no vibration during high-speed cutting, and the sealing surface accuracy reaches Ra1.6 μ m.
3. Efficient and durable performance: the core support for cost reduction and efficiency improvement
Extend lifespan, shorten auxiliary time, and achieve cost reduction and efficiency improvement:
Ultra long lifespan: The positive electrode cutting life of the pole piece cutting tool is over 150000 meters, and the negative electrode cutting life is over 300000 meters, reducing tool replacement downtime;
Easy to maintain: The single life of the battery cell knife mold is ≥ 1 million times, and the mold repair time is shortened to within 1 hour;
Efficient processing: The single blade processing capacity of structural parts has been increased from 90 pieces to 600 pieces, significantly improving efficiency.
1. Basic parameters (taking mainstream products as an example)
| Product Type | material | hardness | Key precision | service life |
|---|---|---|---|---|
| Polarized slitting knife | Ultrafine grained hard alloy | HRC 92-95 | Burr ≤ 0.012mm, tolerance ± 0.002mm | Positive pole 150000 meters+, negative pole 300000 meters+ |
| Cell Ear Cutting Knife | Imported steel+PTFE coating | HRC 60-62 | Ra0.04， Gap 2 μ m | ≥ 1 million punching cuts |
| Battery pack shell milling cutter | Hard alloy+TiAlN coating | HRC 70-75 | Axial runout ≤ 0.01mm, Ra1.6 | Aluminum alloy processing for ≥ 8 hours |
3、 Core technical parameters and execution standards
Lithium cutting toolsImplement strict standards, with key parameters covering materials, precision, and processing performance. The core parameters are as follows:
2. Implement standards
General standard: ISO 9001 certification, hard alloy complies with GB/T 2075-2016;
Special standard: Refer to the relevant requirements of GB/T 30834-2014;
Testing standard: The cutting edge is fully inspected with a microscope at a magnification of 150-500 times, and the accuracy is measured using a roundness tester.
4、 Packaging, transportation, and usage recommendations
1. Packaging and transportation
Adopting "anti-static cover+vacuum packaging+shock box" protection, precision cutting tools are equipped with wooden brackets; Support domestic next day delivery and international transportation, ensuring stable performance in high humidity environments.
2. Use and maintenance
Clean the polarizer blade with anhydrous ethanol before installation, and replace it if the rear blade surface wears 0.3mm;
Regularly inspect the guide column of the cutting die and lubricate it with air flotation to prevent deformation;
The structural cutting tool needs to be equipped with cutting fluid, and the recommended speed for aluminum alloy processing is 200-250m/min.
5、 Development prospects
With the development of lithium battery technology, the electrode plates are thinner and the materials are more complex, which requires nanometer level precision and intelligent perception for cutting tools. Currently domestically producedLithium cutting toolsImport substitution has been achieved. In the future, we will make breakthroughs towards "predictable state" and help promote the high-quality development of the lithium battery industry.
