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Die-cutting defects (burrs and cracks) occurring in the electrode evaluation of LIBs and solid-state batteries directly impact the reliability of evaluation data and development schedules. We propose high-performance hand punches manufactured by Nogami Giken, combined with test equipment lending and paid testing. This simultaneously improves evaluation accuracy and development speed while lowering implementation risks.
Burrs and Cracks Frequently Occurring in LIB / Solid-State Battery Electrode Evaluation
Burrs and cracks occur during electrode die-cutting (test samples) for LIBs and solid-state batteries, compromising the reliability of evaluation data. This affects development schedules.
Existing hand punches have insufficient compatibility with electrode materials (thin films and brittle materials).
● Scenarios where this becomes apparent: Existing product improvement and new material evaluation phases.
● Main impacts: Increased variance in evaluation data, development delays due to re-evaluation, and risks in mass production investment decisions.
Why Burrs and Cracks Cannot Be Resolved: Limitations of Blade Shape, Load Settings, and Material Compatibility
In addition to the physical property limits of existing materials, there are constraints in the processing design (existing punch blade shapes and load settings).
● Grounds for identification: Interviews with responsible personnel and comparative tests with existing hand punches.
Countermeasures Attempted So Far and Their Limits
Blade replacement of existing punches (limited burr reduction) and trial use of laser cutting (thermal effects occurred).
Based on these limitations, we adopted the following approach as a more fundamental solution.
Solution Approach: Proposing Nogami Giken Hand Punches × Test Equipment Lending × Paid Testing
Developing new opportunities with overseas manufacturers: Assisting implementation decisions through the proposal of hand punches manufactured by Nogami Giken, test equipment lending, and paid testing.
STEP. 01
Overseas Supplier Collaboration
Evaluating and introducing hand punches manufactured by Nogami Giken
STEP. 02
Test Equipment Lending (Consultation required case-by-case)
Verifying die-cutting quality within the customer’s company
STEP. 03
Paid Testing
Conducting proxy tests on the Nogami Giken (Fuji Chemi) side
Fuji Chemi Trading’s Supply System: Headquarters × China Base × Overseas Network × Nogami Giken
This solution is established through a clear division of roles among multiple bases:
・Headquarters / Domestic Sales: Customer contact window and test equipment coordination
・Overseas Bases (China and Global): Demonstrations and deployment for overseas customers
・Nogami Giken / Partner Manufacturers: Equipment supply and technical data provision
● Supply System: Phased operation: test equipment lending → paid testing → formal implementation.
Results of Implementation
Achieved improvements in function and performance, stable quality, and reduced defect rates. Enabled the die-cutting of test samples optimal for evaluation.
● KPI Candidates: Reduction in burr and crack occurrence rates / Improvement in repeatability of evaluation data / Increased adherence rate to development schedules.
● Implementation Lead Time: Proceeding step-by-step from test equipment lending to paid testing and main equipment implementation.
Anticipated Ripple Effects and Horizontal Expansion
The benefits of implementing this solution extend beyond solving the primary issues. Please utilize this as material for internal and management proposals.
・Expansion into next-generation battery evaluations such as all-solid-state batteries and sodium-ion batteries
・Accompanying the evaluation phases of electrode material manufacturers and separator manufacturers
・Comprehensive proposals to the LIB evaluation equipment market driven by EV market expansion
・Horizontal expansion to overseas battery factories (China, South Korea, and Southeast Asia)
Differences from Competitors: Why Fuji Chemi Trading is Chosen
In contrast to competitors selling equipment standalone, Fuji Chemi lowers implementation risks with a package of “equipment lending + paid testing + overseas collaboration.”
Product Information & Specification Overview
The main specifications of products with a proven track record can be selected from multiple grades depending on the application and required conditions. Representative specifications are as follows (please contact us for detailed specs).
| Item | Specifications |
|---|---|
| Compatible Materials | LIB electrodes (positive and negative) / Solid-state battery electrodes / Separators |
| Die-Cutting Shapes | Round / Rectangular |
| Features | Blade shape and die-cutting load optimized for electrode materials |
| Evaluation Support | Test equipment lending / Paid testing support |
| Related Markets | EV / All-Solid-State Batteries / Sodium-Ion Batteries |
| Collaboration | Deployable to battery factories and R&D departments in China and worldwide |
Utilization Methods and Operation Examples
In actual operations, the following patterns are frequently adopted:
・Evaluation Phase: Requirement hearing → Sample evaluation → Specification finalization
・Pre-Mass Production Preparation: Division of roles across bases, specification standardization, and local startup
・Mass Production Phase: Ensuring short delivery times and stable supply through our supply system
・Horizontal Expansion: Supporting expansion into other bases and projects
FAQ (Frequently Asked Questions)
What are the conditions for lending test equipment?
Please consult with us on a project-by-project basis regarding lending periods, test details, and paid testing prices.
Can you also support the evaluation of all-solid-state batteries?
Yes, we have a proven track record in evaluating solid-state battery electrodes.
Can you support implementation at overseas battery factories?
Yes, deployment to battery factories in China, South Korea, Southeast Asia, and global research institutions is possible.
Can you introduce evaluation equipment for components other than electrodes (separators, tabs, etc.)?
We can propose evaluation equipment for all LIB processes under Fuji Chemi’s “Battery Evaluation Lab.”
What kind of data can be obtained through paid testing?
We can provide data such as burr/crack occurrence rates, dimensional accuracy, and repeatability.
Proposals by Related Applications and Challenges
■ Accelerating LIB Separator Air Permeability Measurement | Improving Quality Control Efficiency Through Oken Type Air Permeability Testers × Collaboration with China Bases and Overseas Agents
■ Small-Lot and Slitting Processing for FPC Release Film | Supplying Evaluation Samples with Short Lead Times from Stock Items
