ESS Battery Cell Capacity Grading Cabinet

1. Equipment Overview

The ESS Battery Cell Capacity Grading Cabinet is a high-precision system designed for grading energy storage battery cells based on their capacity, voltage, and internal resistance. This equipment is optimized for ESS applications and ensures consistent quality and performance by identifying cells with similar characteristics for balanced module and pack assembly.

2. Key Features

High Precision: Accurate measurement of cell parameters for optimal grading.

Multi-Channel Testing: Simultaneous testing of multiple cells to enhance throughput.

Flexible Compatibility: Supports various cell formats, including prismatic, pouch, and cylindrical.

Data Integration: MES-compatible for real-time data tracking and traceability.

Safety Assurance: Comprehensive safety features, including temperature monitoring and fault alarms.

3. Technical Specifications

3.1 Cell CompatibilityCell

Types: Prismatic, cylindrical, pouch.

Cell Dimensions:

Prismatic: 50 × 20 × 70 mm to 300 × 100 × 400 mm.

Cylindrical: 18650, 21700, 4680.

Pouch: 50 × 50 mm to 300 × 500 mm.

3.2 Measurement Capabilities

Voltage Measurement:

Range: 0–5 V.

Accuracy: ±0.005 V.

Current Measurement:

Range: 0.1–200 A.

Accuracy: ±0.05%.

Capacity Measurement:

Range: 0–500 Ah.

Accuracy: ±0.1%.

Internal Resistance Measurement:

Range: 0.01–50 mΩ.

Accuracy: ±0.1 mΩ.

3.3 Grading Parameters

Sorting Criteria: User-defined thresholds for capacity, voltage, and resistance.

Grading Groups: Up to 16 classification levels for precise grouping.

3.4 Testing Modes

Charge/Discharge Cycle: Programmable current profiles for realistic performance evaluation.

Constant Current (CC): Stable current for capacity grading.

Constant Voltage (CV): Stabilized voltage for cell calibration

3.5 System Capacity

Channel Count: 64–256 independent channels (expandable).

Testing Throughput: Up to 1,000 cells per day.

Cycle Time: Adjustable based on cell specifications and testing profiles

3.6 Data Management

Data Acquisition: Real-time logging of cell performance data.

Traceability: Unique serial number tracking for each cell.

Integration: MES and ERP system compatibility for centralized data management.

Reporting: Automated generation of grading reports and analysis charts.

3.7 Control System

HMI: Intuitive touchscreen interface for operation and monitoring.

PLC: Reliable control system for precise testing and safety management.

Alarm System: Visual and audible alerts for fault conditions.

3.8 Safety Features

Overcurrent Protection: Automatic shutdown for abnormal current levels.

Overvoltage Protection: Prevents damage to cells due to excessive voltage.

Thermal Monitoring: Real-time temperature monitoring with alerts.

Emergency Stop: Accessible emergency stop buttons for immediate power cutoff

3.9 Mechanical Design

Cabinet Dimensions: 2,000 × 1,200 × 1,800 mm (customizable).

Weight: Approximately 1,500 kg.

Cooling System: Integrated forced-air cooling for stable operation.

3.10 Power Requirement

Input Voltage: AC 380V ±10%, 50/60 Hz, 3-phase.

Power Consumption: ≤50 kW.

3.11 Environmental Requirements

Operating Temperature: 15–35°C.

Humidity: ≤70% RH (non-condensing).

Cleanliness: Dust-free environment recommended for optimal performance.

4. Applications

Energy Storage Systems (ESS): Cell grading for large-scale battery storage applications.

Renewable Energy: Grading cells for solar and wind power storage solutions.

Electric Vehicles (EV): Pre-assembly quality assurance for high-capacity cells

5. Maintenance and Warranty

Maintenance Schedule:

Weekly: Inspection and cleaning of connectors.

Monthly: Calibration of measurement channels.

Annually: Comprehensive diagnostics and software updates.

Warranty:

Standard: 1 year.

Extended: Available upon request.