Download
Share
Print this page
EV-POWER BCU-NEV-XXC Installation Instructions Manual
  1. Manuals
  2. Brands
  3. EV-POWER Manuals
  4. Control Unit
  5. BCU-NEV-XXC
  6. Installation instructions manual

EV-POWER BCU-NEV-XXC Installation Instructions Manual

Battery control unit
Hide thumbs

Advertisement

Quick Links

Download this manual
BCU-NEV-XXC MANUAL
1.0
EV Power - Battery Control Unit
NEV-5.x Installation
Instructions.
PAGE
1
OF
17

Advertisement

loading
Need help?

Need help?

Do you have a question about the BCU-NEV-XXC and is the answer not in the manual?

Questions and answers

Related Manuals for EV-POWER BCU-NEV-XXC

Summary of Contents for EV-POWER BCU-NEV-XXC

  • Page 1 BCU-NEV-XXC MANUAL EV Power - Battery Control Unit NEV-5.x Installation Instructions. PAGE...
  • Page 2 4Cell, 8C, 12C and 16C Models are preconfigured at the factory - 100A cont. 200A peak capacity with latching relay. - Plug (bolt) and play with EV Power Pak 12V batteries. - Designed for use with EV Power A series Chargers.
  • Page 3 It is the responsibility of the installer to have the appropriate qualifications and skills for working with high voltages. No liability whatsoever will be assumed by EV Power for injury, accidents or damage resulting from the use of these instructions.
  • Page 4 BCU-NEV-XXC MANUAL How it works - BCU Usage Cell Modules Input connects to the cell module loop of the battery. If no cell modules are used this input can be shorted together to simulate OK signal.
 
 Note the current measuring shunt is internal to the unit and connected in the positive line.
  • Page 5 BCU-NEV-XXC MANUAL Charge Enable Output can optionally be used to control a charger such as the EV Power A-series range. It will keep the charger enabled even if the voltage drops low so that the battery can still be charged. If there is a cell module error charging will be inhibited. 50mA maximum.
  • Page 6 Try reseting and charging a few times. If one red LED on the BMS cell modules on the battery comes on long before the others then that cell is running too high. Contact EV Power for advice in this instance.
  • Page 7 BCU-NEV-XXC MANUAL The BCU is the last line of defence for the battery pack. It should not be relied upon to disconnect the battery every time it is used. It is there as a backup. No battery warranty can be assumed if the load has no inherent low voltage cutoff.
  • Page 8 BCU-NEV-XXC MANUAL 
 PAGE...
  • Page 9 BCU-NEV-XXC MANUAL Monitor - Standard Equipment The Monitor 162 is a 16 character, 2 line OLED display. It displays Volts (on the load terminal), battery amps, estimated battery amphours remaining and estimated battery State of Charge percent. It can also be used to configure some parameters in the BCU such as number of cells and Ah capacity.
  • Page 10 BCU-NEV-XXC MANUAL Fuel Gauge - Optional Equipment The BCU-NEV comes with a 10 segment LED fuel gauge as standard. The 10 segments represent approximately 10% intervals of SOC measured via amphour counting.
 
 
 
 With regards to the fuel gauge, the BCU is preset in the workshop for a xxC-yyAh (xx = 4-16 cell , yy = 40-980Ah) pack so should be reasonably accurate initially.

  • Page 11: Error Messages

    BCU-NEV-XXC MANUAL If storing for more than a month the BMS should be off and also the main battery isolator (which supplies power to the BCU also) should be off. If the battery is over-discharged and the charger will not enable then a temporary override is to press and hold the on-off...
  • Page 12 BCU-NEV-XXC MANUAL General Battery Guidelines LFP cells should be housed in a battery box away from dust, excessive heat and moisture. Appropriate restraints should be used that are capable supporting at least 4 times the battery weight in the event of a vehicle rollover. All restraints should be well insulated so as not to short out battery terminals.
...

  • Page 13: Charger Control

    The polarity does not matter.
 
 This is covered in another manual. Install the cell modules first. It is not required for the prefabricated EV Power Pak batteries.
 
 The cell module daisy chain should be one single series string, not two or more strings in parallel.

  • Page 14: Commissioning The System

    BCU-NEV-XXC MANUAL Any other charger used should charge to 3.55V x the number of cells in the battery. This peak voltage applies to all LiFePO4/LFP battery brands and is required for correct balancing to be applied by the BMS. Note: 3.50-3.55V/cell is the standard peak charge voltage for LiFePO4 (LFP) chemistry.
  • Page 15 BCU-NEV-XXC MANUAL Disconnect one of the signal wires between the cell modules. The red LED on the BCU will flash After a delay of about 10 seconds the relay will switch off. Switching on the charger at this time should have no effect, that is, it will not switch on. Switch the charger off at the wall and reconnect the signal wire.

  • Page 16: Important Notes

    BCU-NEV-XXC MANUAL A visual check of the battery pack during charging should be made every 3 months. Switch off the BCU and on again to check that the contactor is operating correctly. Check the cells for corrosion or other damage.
  • Page 17 DOD - Depth of Discharge. Similar to SOC except it is expressed as a percentage down from full. eg. 100% DOD = empty. LiFePO4 (LFP) - Lithium Iron Phosphate used in the EV Power battery chemistry. Nominal Voltage - the resting voltage of a charged cell. For Lithium cells this is normally 3.2-3.3V.
...