Active Dummy Load for Batt Characterization
Products > Energy and Green Energy
Patent Pending Product
| Technical Data | Value |
Power input voltage | 90 → 264V ca @ 50/60 Hz |
| Power Consumption | 50W |
| Mimic Display | 4x20 character |
| GUI Interface | Windows OS 32/64 XP, W7, W8, W8.1, W10 |
| Battery testing | |
| - Cut off voltage | Defined by the system and adjustable |
| - Read out at display | Capacity of discharge |
- Battery under test typology | • Pb • Li • LiPo • LiFePo4 • LiMn2O4 • Ni-Mh • NiCd |
| Cooling | Temperature controlled fans (optional water cooling) |
| Status signals | Overvoltage, Overcurrent, Overtemperature, mosfet status, |
Terminals | Screws terminal M6 |
| Nominal Dissipative Power | DL-1.0 - 1000W DL-2.0 - 2000W DL-3.0 - 5000W |
| Steady Power Input at 20°C | DL-1.0 - 1000W (Water Cooled) DL-2.0 - 2000W (Water Cooled) DL-3.0 - 5000W (Water Cooled) DL-4.0 - 10000W |
| Input voltage DC | |
| - Adjiustment range | 0...100V |
| - Resolution of display | 100mV |
| - Resolution of GUI | 10mV |
- Accuracy | <=0.1% |
| Input Current | |
| - Adjustment range | DL-1.0 0..050A DL-2.0 4..100A DL-3.0 4..200A DL-4.0 4..300A |
| - Resolution of display | 100mA |
| - Resolution of GUI | 10mA |
| - Accuracy | <=0.2% |
| Input Power | |
| - Adjiustment range | (DL-1.0) 0...1200W |
| - Resolution of display | 1W |
| - Resolution of GUI | 0.1W |
| - Accuracy | <=2% |
| Resistance | |
| - Adjiustment range | 0...1000Ω |
| Dynamic functions | |
| - Levels | Unlimited levels |
| Connection | |
| - PC | USB2.0 |
| Optional Connection | RS232 |
Remote Connection | Android Application |
Protections | Overtemperature, Overvoltage, Overcurrent Discharge Cutoff Voltage |
| Relative Umidity | 80% max |
Maximum operative altitude for rated PWR | 1500mslm |
| Dimensions (W x H x D) | 381 x 143,4 x 401,5 mm |
| Weight | about 15kg |
General
DLX.0 meets the needs of modern laboratories, industries, and workshops for testing and characterizing cells, batteries, and generators. The dissipative method has been selected for its superior stability in terms of voltage and current readout accuracy.
Its design is optimized for both single cells and pre-assembled battery packs, and it can dissipate up to 1kW. Multiple units can be connected in a modular configuration to achieve higher power dissipation.
The DL1.0 model dissipates up to 0.8 kW and uses controlled air cooling. The higher-capacity models DL2.0 and DL3.0 are designed for 1.3 kW of power dissipation. Models DL4.0 and DL5.0 feature liquid cooling and support power dissipation of up to 10 kW.
The Graphical User Interface (GUI) enables users to test any type of cell. The main software automatically determines the appropriate cut-off voltage to prevent over-discharge based on the cell chemistry (e.g., Pb, NiCd, Lithium, LiFePO₄, LiPo, etc.).
All functions are managed by an embedded processor that communicates with an external PC via USB. The GUI runs on Windows (32/64-bit) and is constantly connected to the ATEC Robotics data center for real-time monitoring and predictive maintenance.
The main software installed on the PC autonomously generates a test certificate, as shown in the following images. Additionally, an Android app allows users to remotely monitor the test status.
Operation modes
DLX.0 supports the typical operating modes: Constant Current (CC), including both static and dynamic profiles, Constant Power (CP), and Constant Voltage (CV). The desired mode is selected via the Graphical User Interface (GUI).
Additional protective settings are available to safeguard the test equipment. For example, a constant current test can include a maximum power limit, while constant voltage, power, or resistance modes can include a maximum current limit. These thresholds are automatically calculated by the software and proposed to the user for confirmation.
Static and dynamic operations
During static operations, a single value can be set through the user interface. In dynamic operations, the user can define a wide range of values to create step profiles for any of the four physical quantities: voltage (U), current (I), power (P), or resistance (R).
Battery test mode
In battery test mode, the battery can be discharged either at a constant current or with variable current levels, until the voltage reaches a predefined threshold based on the specific cell chemistry. Once this cut-off voltage is reached, the test stops automatically, and a test certificate with detailed graphs is generated.
The discharge time and the dissipated charge (Ah) are accurately measured, displayed on screen, and printed.
Power derating
All units in the series are equipped with thermal derating to limit power output and prevent overheating when operating near their maximum capacity. Thermal derating is implemented across all models.
In the base model, which relies on controlled air cooling, the dissipable power depends on ambient temperature: the lower the temperature and the more efficient the cooling, the higher the power that can be safely dissipated.
To ensure continuous full-power operation even under extreme environmental conditions, models with optional water cooling are available. In particular, the DL-5.0 model supports permanent dissipation up to 10 kW thanks to its advanced liquid cooling system.
Display
All key information is clearly displayed on the Graphical User Interface (GUI). This includes both the actual output values and setpoints for voltage (U), current (I), power (P), and resistance (R), as well as the active regulation mode (CV, CC, CP, or CR).
Error messages, configuration settings, and entries from the setup menu are also easily accessible. Additionally, if optional digital interfaces are installed, their status and parameters will be shown on the GUI.
Remote Status Check
An Android app is provided with the Dummy Load, allowing users to remotely monitor the status of the ongoing test.
System Bus
The system is equipped with a remote sensing input for ultra-precise measurement of the input voltage, even though it also features a computational method to estimate the voltage drop caused by the connection cables.
Water cooling
Water cooling replaces the standard fan-based cooling system and offers several advantages:
– No hot air exhaust from the device
– Significantly reduced noise levels
– 100% continuous power dissipation, even under maximum load
– No hot air exhaust from the device
– Significantly reduced noise levels
– 100% continuous power dissipation, even under maximum load
Options
• RS232 connection