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BLU-D Series Overview
Battery Capacity Tester / Discharge Tester BLU-D Series is the latest DV Power solution for comprehensive battery capacity measurement and full battery discharge. This universal instrument is applicable to any battery string (lead-acid, lithium-ion, nickel-cadmium based or other) with voltages up to 1 350 V DC.
BLU-D Series provides all options and features of BLU-C Series. Key test parameters can be monitored (graphically and numerically) on 7-inch touch screen display during the discharge process. The instrument also enables the measurement and monitoring of cell parameters (voltage/intercell voltage/temperature), which makes it a complete stand-alone discharge tester .
Besides the battery discharge test, BLU-D Series can be used to discharge a battery, completely and efficiently, down to 0 V. Such total discharge is applied to Li cells at the end of their lifetime, as the initial step of the recycling process. More information about this topic can be found on this article How to Use Battery Load Units in Process of Repair or Recycling of EV Batteries?
Transport of Li battery systems, due to safety reasons, requires batteries to be discharged down to 30%. BLU-D Series provides special discharge mode enabling batteries to be discharged to the customer predefined voltage level.
BLU1100D & BLU1350D Models
BLU-D Series includes 2 models: BLU1100D and BLU1350D.
Both models are providing all features and options of the BLU-C Series, including discharge down to 0 V.
BLU1100D & BLU1350D will discharge the battery by selecting minimum resistance (and current will decrease as the voltage decrease).
However, when used together with ZVD1350 module battery can be discharge down to 0 V with constant current.
BLU-D Series devices provide maximum power (40 kW) on wide voltage range (800–1350 V DC for BLU1350D and 800-1100 V DC for BLU1100D). Maximum discharge currents (up to 100 A), in relation to the battery voltage, are presented on the graph below:
BLU-D Discharge modes
A user can select one of four discharge modes:
BLU-D enables setting the discharge current up to 100 A, with 0,1 A resolution. If higher currents are required, up to 10 x BLU-D units can be connected in parallel.
Additionally, different battery duty cycles can be simulated using user-selectable discharge profiles.
The battery discharge test can be carried out without disconnecting the battery from the load it supplies, by using external current clamp to measure the total battery current or the load current. This way batteries can be tested while they are online.
The capacity tester is compatible with DV-B Win software. Therefore, the user can view detailed numerical and graphical presentations of key parameters and create reports in various formats.
