Vinci-EV Li-ion Battery Management System

BMS for automotive traction packs: EVs, HEVs, PHEVs

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Outstanding versatility, feature rich Li-ion Battery Management System

  • 60 to 700 V nominal traction packs
  • Single or split traction packs
  • Power (EV), energy (HEV) or both (PHEV)
  • Off the shelf, stocked

A member of the Vinci BMS family.

Vinci application module
Vinci EV application module
Vehicle:
  • Motorcycles
  • Passenger cars
  • Trucks, industrial vehicles, mining
  • Marine vessels
  • Airplanes
Battery topology:
  • Single pack
  • Multiple modules
Usage:
  • BEV
  • HEV
  • PHEV

For applications other than traction packs, see other Vinci BMS families

Standard specifications:

  • 60 to 700 V nominal
  • Up to 256 Li-ion cells in series, any chemistry,
  • Master slave: 1 master, 1 application module, N slaves
  • Wired (tap wires) with 2-wire link daisy chain to master;
    or distributed (one cell module / cell) with fiber optic to slave
  • Rugged, sealed, industrial grade packaging
  • Thermal management: 4 thermistors / slave (wired) or 1 thermistor / cell module (distributed)
  • Contactor driver, precharge
  • Ground fault isolation test
  • Hall Effect or shunt current sensing
  • Energy (100 % SoC) or power (50 % SoC)
  • SoC (State of Charge), SoP (State of Power),
    SoH (State of Health), SoF (State of Function)
  • Fault detection, data logging
  • Isolated CAN communication link
  • USB port for troubleshooting
  • Charged CAN bus
  • Field configurable through GUI
  • Off-the-shelf, stocked

Options:

  • 20 A to 1000 A sensors and protectors
  • Up to 16 strings permanently in parallel
  • Bullet-proof against tap mis-connection within a bank (wired)
  • Charging station interface: J1772
  • AC to 12 Vdc power supply
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Wired cell topology, daisy-chained slaves

The traction pack is fully self contained.
A 12-cell slave is mounted by each group of 12 cells and wired to the cells.
A VinciLink goes from the master to the first slave; additional VinciLinks go from slave to slave.
A VinciBus goes from the master to the application module.

Components:

  • 96 cells in series in 8 banks
  • Vinci-EV Battery Master, VinciLink
  • Vinci-EV application module
  • 8 x VinciLink slaves, dissipative, 12-cell
  • Contactor set with precharge and current sensor

Split pack example: a 2-wire cable is run from the last slave in the first battery to the first slave of the second batery.

Block diagram
Split pack
Block diagram
Block diagram

Wired cell topology, bussed slaves

The traction pack is fully self contained.
A 12-cell slave is mounted by each group of 12 cells and wired to the cells.
A VinciBus goes from the master to the application module and to each slave.

Components:

  • 96 cells in series in 8 banks
  • Vinci-EV Battery Master
  • Vinci-EV application module
  • 8 x VinciBus slaves, dissipative, 12-cell
  • Contactor set with precharge and current sensor

Split pack example: the VinciBus is run from the Master (outside the batteries) to the first battery, then to the second battery.

Block diagram
Split pack
Block diagram
Block diagram

Distributed cell topology

The traction pack is fully self contained.
A cell module is mounted on each cell.
Cables go from the ends of each block of 25 cells, to a slave.

Components:

  • 100 cells in series, in blocks of 25 cells
  • Vinci-EV Battery Master
  • Vinci-EV application module
  • VinciBus slave, 4-bank
  • 100 cell modules
  • Contactor set with precharge and current sensor

Split pack example: 2-wire cables are run from one slave (outside the batteries) to each battery.

Block diagram
Split pack
Block diagram
Block diagram

To design a BMS for your EV, start by selecting one of these 3 topologies or contact us for help:

  • Wired, VinciLink: A wire to each cell, 2-wires between adjacent slaves
  • Wired, VinciBus: A wire to each cell, a 5-wire bus to all the modules
  • Distributed, VinciBus: A module on each cell, a 5-wire bus to all the modules

Slaves sense cell voltages through a number of tap wires.

The BMS uses a Master/Slave topology, consisting of a number of modules; communication between slaves is through a 2-wire daisy chain; between the Master and the Application module is through a 5-wire bus.

The BMS consists of:

  • A VinciLink Battery Master and an Application module
  • A number of VinciLink Slaves
  • Up to 2 current sensors
  • A set of contactors

Detailed technical Info

Click to order

Block diagram
Wired VinciLink topology

Slaves sense cell voltages through a number of tap wires.

The BMS uses a Master/Slave topology, consisting of a number of modules; communication among all modules is through a 5-wire bus.

The BMS consists of:

  • A VinciBus Battery Master and an Application module
  • A number of VinciBus Distributed Slaves
  • For each cell, a Prismatic cell module or a Pouch cell board, or a Small Cylindrical cell board
  • Up to 2 current sensors
  • A set of contactors

Detailed technical Info

Click to order

Block diagram
Wired VinciBus topology

A cell module is mounted on each cell.

The BMS uses a Master/Slave topology, consisting of a number of modules; communication among all modules is through a 5-wire bus.

Cells are divided into banks of up to 25 cells; slaves are connected to a bank of cells through 2-wire cables.

The BMS consists of:

  • A VinciBus Battery Master and an Application module
  • A number of VinciBus Distributed Slaves
  • For each cell, a Prismatic cell module or a Pouch cell module, or a Small Cylindrical cell module
  • Up to 2 current sensors
  • A set of contactors

Detailed technical Info

Click to order

Block diagram
Distributed topology

 

Wired, VinciLink Wired, VinciBus Distributed, VinciBus
Block diagram Block diagram Block diagram
Click to order Click to order Click to order
Application Recommendations
Case Sngl mid-size
Single large
Multiple
Voltage Low
Mid
High
Format Prismatic
Pouch
1 temperature / cell
Feature Comparison
Cell sensing
Distributed vs wired
Wired: For N cells, N+1 voltage tap wires go from the slave to the cells. Distributed: Cells are divided into banks of up to 25 cells.
A cell module is mounted on each cell.
Two 2-wire cables go from the Slave to the two cell modules at the to ends of the bank.
Slave to Master VinciLink
A Linear daisy chain (twisted pair) runs between the Master and the first VinciLink slave; one between each pair of adjacent VinciLink slaves.
VinciBus.
A parallel bus (5-wire) goes from the master, connects each module (slaves and application module), and ends in a terminator.
Pros & cons
Pros
  • Simple 1-wire / cell sensing
  • Simple 2-wire twisted pair link
  • Isolated slaves: safe, high noise immunity
  • Few electronic assemblies
  • Very high resolution measurement
  • Simple 1-wire / cell sensing
  • CAN based: Reliable, high noise immunity
  • Redundant string for fail-safe operation
  • Ideal for split packs
  • Few electronic assemblies
  • Very high resolution measurement
  • Spaghetti-free cell sensing
  • Integral temperature sensing
  • CAN based: Reliable, high noise immunity
  • Redundant string for fail-safe operation
  • Ideal for split packs
Cons
  • High voltage wire through battery
  • Requires additional thermistors, few measurement points
  • May not be suitable for use between boxes in a split pack
  • High voltage wire through battery
  • Requires additional thermistors, few measurement points
  • Bus has more wires: 5
  • More electronic assemblies
  • Bus has more wires: 5
  • Lower resolution measurement

 

 
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