• Pole piece & cell conveying and sorting: Small signals from PLCs and sensors are transmitted via relays to drive air cylinders, solenoid valves and conveyor motors, enabling precise start-stop and multi-station linkage.

• Liquid injection, sealing, formation and capacity grading: Control the start, stop and switching of liquid injection pumps, sealing mechanisms, formation cabinets and capacity grading cabinets. Expand contacts to drive multiple actuators and indicator lights simultaneously.

• Testing equipment (voltage, internal resistance, short-circuit and withstanding voltage test): Switch test loops, isolate high and low voltages, expand contact groups to support parallel testing of multiple battery cells.

• Spot welding machine control: Small trigger signals act on relays to switch high-current discharge loops and realize sequential spot welding.

• High-voltage loop isolation: Low-voltage control signals (5V/12V) pass through relays to drive main contactors. It achieves complete isolation between high voltage and low voltage to protect the BMS main control board.

• Charge and discharge control: Switch pre-charging, main charging and main discharging loops; cut off circuits rapidly in case of overvoltage, overcurrent and overtemperature for safety protection.

• Fault diagnosis and protection: Realize contact adhesion detection and status feedback; complete fault judgment and protection triggering within 20ms.

• Signal expansion: Convert one-channel PLC output into multi-channel contacts through relays to synchronously control contactors, indicators, buzzers and remote alarms.

• PACK module control: Manage cell balancing, cooling fans and heating films inside modules; realize series-parallel switching of multiple modules.

• Energy storage PCS & converters: Control the connection and disconnection between battery clusters and PCS, and cut off circuits immediately upon faults to prevent failure escalation.

• Grid-tied & off-grid switching: relays execute mode switching between grid-connected and off-grid operations under BMS logic control

• DRPS Series: Ultra-slim 6mm width with lead frame technology for high reliability and space-saving installation.

• DRPB Series: Compact 14mm width, available for PCB soldering and socket base mounting.

• DRPT Series: Compact 14mm width, built-in LED status indicator and manual test button with high cost performance.

• DRPE Series: Universal plug-in type with 2-channel and 4-channel options for signal isolation, amplification and contact expansion.

• DRPL Series: High-power model, rated voltage range: DC 12V~220V, AC 24V~380V.

• High reliability: Mechanical service life ≥ 10 million operations, anti-adhesion, vibration-resistant and flame-retardant, suitable for production lines, vehicle-mounted systems and energy storage projects.

• Superior isolation: Complete separation between high voltage and low voltage, with maximum dielectric withstand voltage up to 2000V, safeguarding main controllers and operating personnel.

• Modular design: Plug-and-play structure with expandable modules for easy maintenance, cutting down design and commissioning costs.

• Full certifications: UL and CE approvals, fully complying with safety standards for the lithium battery industry.