This flow battery test station is a high-precision, intelligent testing platform tailored for the R&D and production testing of vanadium redox flow battery (VRFB) stacks.
Integrating power electronics control, fluid dynamics monitoring, and electrochemical analysis, it simulates the operating conditions of battery stacks under a wide range of scenarios.
Supporting full lifecycle assessment—from stack activation (0V start) to performance degradation testing—it serves as an ideal tool for VRFB stack development, quality inspection, and durability evaluation.
PRODUCT DESCRIPTION
1. 0V Startup Support
Enables stack activation from 0V, eliminating the need for an auxiliary power supply during electrolyte initialization. Continuously monitors electrolyte temperature, density, and condition to ensure optimal activity.
2. High-Precision Control
Delivers current and voltage control accuracy up to ±5% FS for reliable polarization curve and efficiency testing. Built-in multi-channel voltage scanning monitors individual cell voltages to quickly identify inconsistencies and assess flow distribution uniformity.
3. Regenerative Energy Savings
Bidirectional power conversion feeds discharge energy back to the grid with over 90% efficiency, significantly cutting energy costs during long-term cycle testing.
4. Intelligent Flow Management
Directly regulates variable frequency pumps to control flow rate or pressure according to test protocols. Real-time monitoring of flow, pressure, and temperature includes configurable alarm thresholds, and automatic activation of external cooling or heating ensures a consistent thermal environment.
5. Advanced Data Analysis
Online SOC estimation tracks electrolyte and stack charge status. AC/DC internal resistance measurement supports analysis of ohmic and mass transport polarization.
●Programmable test sequences: constant current/voltage/power charge/discharge, duty cycle simulation.
●Real‑time multi‑window display of electrical and hydraulic data with scalable curves.
●Automated report generation and raw data export for further analysis.
●Stack R&D: polarization curves, power characteristics, efficiency mapping.
●Lifetime validation: long‑term cycling, duty cycle simulation.
●Electrolyte evaluation: comparative testing of different formulations.
●Factory QC: electrochemical activation and capacity calibration after leak testing.
| No. | Item | Parameters |
| 1 | Number of Main Channels | 4 independent channels |
| 2 | Total Machine Power | 4*30kW |
| 3 | Channel Mode | Independent operation or single-parallel connection |
| 4 | Working Mode | Constant current charging / Constant voltage charging / Constant current discharging / Constant power discharging / Constant voltage discharging / Standby / Stop |
| 5 | Stop Conditions | Time, voltage, current, capacity, etc. |
| 6 | Voltage Parameters | Charging Voltage Range: 0v-100v |
| 7 | Discharging Voltage Range: 15v-100v | |
| 8 | Voltage Accuracy: ±(0.5%RD+0.5%FS) | |
| 9 | Minimum Resolution: 0.1V | |
| 10 | Current Parameters | Maximum Output Current: ±300A |
| 11 | Minimum Output Current: ±500mA | |
| 12 | Current Accuracy: ±(1%RD+1%FS) | |
| 13 | Minimum Resolution: 200mA | |
| 14 | Current Startup Response Time: ≤20ms | |
| 15 | Current Conversion Time: ≤40ms | |
| 16 | Signal Acquisition | Acquisition Period: 1000ms |
| 17 | Power | Output Power: Maximum continuous operating power of a single channel: 30kW |
| 18 | Stability: ±0.5%FS | |
| 19 | Efficiency | Maximum Charging Efficiency: >90% |
| 20 | Maximum Discharging Efficiency: >90% | |
| 21 | Grid Test | Grid Test Harmonics: THD≤5% |
| 22 | Power Factor: ≥0.98 | |
| 23 | Test Scheme: Customizable test schemes (constant current, constant power, etc.) according to test requirements | |
| 24 | Test Scheme | Number of Steps: Maximum 999 steps |
| 25 | Nested Layers: Supports 3 layers of nesting | |
| 26 | Test Data | Recorded Data: Step number, time, battery voltage, current, power, etc. |
| 27 | Data Export Mode: Excel can provide multiple data such as charging efficiency, charging curve, voltage, capacity, current, time characteristics, etc. |
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