Jianhu JH-Series High-Precision Battery Nail Penetration Tester for Lithium-Ion Cell Safety Evaluation

Overview

The Jianhu JH-Series High-Precision Battery Nail Penetration Tester is an engineered safety evaluation system designed to simulate mechanical abuse conditions in lithium-ion cells—specifically the controlled insertion of a standardized metallic nail into charged or discharged battery cells under defined thermal and mechanical constraints. Operating on the principle of quasi-static mechanical intrusion, the tester replicates real-world internal short-circuit initiation scenarios by driving a calibrated stainless-steel nail (typically Ø3–8 mm, tip angle 30°–60° per IEC 62660-2 and GB/T 38031–2020) into the cell at programmable penetration speed (0.1–100 mm/s), depth (0–50 mm), and dwell time (0–300 s). The system integrates synchronized force, displacement, and surface temperature measurement to capture critical failure onset parameters—including peak puncture force, force-displacement hysteresis, thermal runaway onset temperature, and time-to-vent/ignition—enabling quantitative assessment of cell robustness against internal short circuits.

Key Features

• High-resolution dual-axis servo-controlled actuation system with closed-loop PID motion control, supporting precise velocity profiling and position repeatability ≤ ±0.02 mm
• Integrated multi-sensor data acquisition: 5 kN load cell (accuracy ±0.5% FS), linear variable differential transformer (LVDT) displacement sensor (resolution 0.001 mm), and Type-K thermocouples (±0.5 °C accuracy) mounted on cell surface and nail shank
• Intelligent thermal management module with Peltier-based active cooling/heating stage (−20 °C to +85 °C range, ±0.3 °C stability) and optional ambient chamber integration
• Modular fixture platform accommodating cylindrical (18650, 21700, 32135), prismatic (up to 200 × 150 × 20 mm), and pouch cells (with reinforced edge clamping)
• Non-contact optical alignment verification system ensuring perpendicular nail entry within ±0.5° angular tolerance relative to electrode stack plane
• Fail-safe interlock architecture compliant with ISO 13857 and IEC 61508 SIL2 requirements, including emergency stop, pressure-sensitive mats, and door-mounted safety switches

Sample Compatibility & Compliance

The JH-Series supports full compliance with globally recognized battery safety testing standards, including IEC 62660-2:2018 (Secondary lithium-ion cells for electric road vehicles), UN 38.3 Section 38.3.2.3 (Nail penetration test), GB/T 38031–2020 (Electric vehicle traction battery safety requirements), and UL 1642 (Standard for Lithium Batteries). Fixture adaptability extends to cells rated up to 100 Ah and operating voltages ≤ 100 V DC. All mechanical components contacting the cell are non-sparking (316 stainless steel or anodized aluminum), and electrical isolation meets CAT II 1000 V requirements. Calibration certificates traceable to NIM (National Institute of Metrology, China) are provided with each unit shipment.

Software & Data Management

The embedded control software—Jianhu TestSuite v4.2—runs on a real-time Windows IoT platform and supports synchronized acquisition at 10 kHz sampling rate across all sensor channels. Raw data is stored in IEEE-compliant HDF5 format with embedded metadata (test ID, operator, environmental conditions, calibration timestamps). The software implements automated event detection (e.g., force inflection point marking, thermal spike identification ≥2 °C/s), GLP-compliant audit trails, and 21 CFR Part 11–ready electronic signatures. Export options include CSV, MATLAB .mat, and PDF reports containing annotated force–displacement curves, temperature–time overlays, and pass/fail status per selected standard clauses. Remote monitoring via Ethernet/IP or Modbus TCP enables integration into centralized lab information management systems (LIMS).

Applications

This system serves as a core tool in R&D laboratories evaluating electrode architecture resilience (e.g., ceramic-coated separators, current collector reinforcement), electrolyte formulation stability (e.g., flame-retardant additives, solid-state interfaces), and module-level mechanical design validation. In QC/QA environments, it performs batch release testing per AQL Level II sampling plans. Academic users apply it to fundamental studies of dendrite-induced shorting kinetics and thermal propagation thresholds. End-users include Tier-1 automotive battery suppliers (CATL, BYD, LG Energy Solution), national metrology institutes (NIM, NIST-affiliated labs), and independent certification bodies (SGS, TÜV Rheinland, UL Solutions) conducting third-party conformance assessments.

FAQ

What safety certifications does the JH-Series hold?

The system complies with CE marking (EMC Directive 2014/30/EU and Machinery Directive 2006/42/EC), RoHS 2011/65/EU, and carries CNAS-accredited factory calibration documentation. Optional ATEX Zone 2 certification is available for hazardous area deployment.

Can the system be integrated with existing battery cyclers or thermal chambers?

Yes—standard Modbus RTU and TCP/IP interfaces enable bidirectional communication with major cycler platforms (Arbin, Bio-Logic, Neware) and environmental chambers (ESPEC, Weiss, Angelantoni). Custom API development support is included under extended service contracts.

Is post-purchase calibration and maintenance supported internationally?

Jianhu maintains authorized service partners in Germany, South Korea, Japan, and the USA. On-site calibration using NIST-traceable reference standards is available under annual service agreements, with remote diagnostics enabled via secure VPN.

How is data integrity ensured during long-duration penetration tests?

All data streams undergo hardware-level anti-aliasing filtering, real-time CRC-32 checksum validation, and redundant local + network-attached storage (NAS) write-once archival. Power-fail recovery preserves unsaved buffers without data loss.

Does the system support custom nail geometries or alternative penetration tools?

The modular toolholder accepts interchangeable nails per ASTM F3359 specifications (diameter, tip radius, hardness ≥55 HRC). Custom tooling (e.g., tapered rods, serrated probes) can be qualified through Jianhu’s mechanical interface protocol (MIP-07).