High Efficiency Charging DC Panel With IP30/40 100000 Hours MTBF For Power Systems

The DC Charging Panel (also known as a DC Power Supply System or DC Screen) serves as the "heart" of power plants, substations, data centers, and industrial facilities. Its primary function is to convert Alternating Current (AC) into stable and reliable Direct Current (DC), providing uninterrupted power support for circuit breaker operating mechanisms, relay protection devices, automation control systems, emergency lighting, and communication equipment. Even in extreme scenarios where the grid power fails completely, the built-in battery bank within the DC panel immediately releases energy, ensuring that critical control circuits and protection devices continue to function normally. This prevents the escalation of power grid accidents and guarantees the absolute safety of the power system.

Tonhe Electronics DC Charging Panels utilize advanced high-frequency switching power technology. The core workflow is as follows:

1. AC Input: The system connects to dual AC power sources (typically AC 380V/220V). After processing by lightning protection and filtering units, the power enters the rectifier modules.
2. Rectification & Charging: High-frequency rectifier modules convert AC into pure DC (e.g., DC 220V/110V/48V). One output directly supplies the load (control bus), while another charges the battery bank via an intelligent battery management unit, maintaining the batteries in a float or equalize charge state.
3. Seamless Switching: When mains power is normal, rectifier modules supply power and charge the batteries. Upon mains failure, the system automatically and uninterruptedly switches to battery power, ensuring stable voltage at the load end and achieving "zero-second" switching.
4. Intelligent Monitoring: A built-in monitoring host real-time tracks voltage, current, insulation status, and battery health, uploading data to the backend management system via RS-485 interfaces.

1. Intelligent Battery Management: Supports Lead-Acid, Gel, and Lithium-ion batteries. Features three-stage charging (Constant Current, Constant Voltage, Float), temperature compensation, periodic equalization activation, and battery inspection, extending battery life by over 30%.
2. Multi-Layer Safety Protection: Integrates over-voltage, under-voltage, over-current, short-circuit, over-temperature, lightning surge, and AC phase-loss protection. Includes online insulation monitoring to detect DC grounding faults in real-time.
3. N+1 Redundancy Design: Charging modules operate in N+1 hot-backup mode; a single module failure does not affect system operation. Supports online hot-swapping for maintenance without power interruption.
4. Remote Communication & Monitoring: Standard RS-485/Ethernet interfaces supporting MODBUS RTU/TCP protocols. Connects to SCADA systems or cloud platforms for remote telemetry, signaling, control, and adjustment ("Four-Tele" functions).
5. Black Box Recording: Built-in event logging stores historical alarms, operation records, and fault waveforms, facilitating accident tracing and analysis.

• Structural Design: Adopts a modular design concept with a compact structure and rational layout. Features front-rear door access or single-side maintenance design to save floor space.
• Material & Craftsmanship: The cabinet is made of high-quality cold-rolled steel (thickness ≥2.0mm), treated with pickling, phosphating, and electrostatic powder coating for anti-corrosion and rust resistance. Standard color is RAL7035 (Computer Gray).
• Internal Layout: Clearly zoned, including AC distribution, rectifier module, DC feeder, battery connection, and monitoring instrument areas. Separated wiring for strong and weak currents ensures strong anti-interference capability.
• Customizable Dimensions: Standard dimensions are 2260mm(H) * 800mm(W) * 600mm(D). Non-standard customization is supported based on site space and capacity requirements.
• Cable Entry/Exit: Supports top or bottom cable entry/exit. Cable gland positions can be pre-fabricated according to customer drawings.

Tonhe Electronics DC Charging Panels are designed and manufactured in strict compliance with the following authoritative domestic and international standards: