Battery junction box

Products and reference designs

Battery junction box

Block diagram

Overview

Our integrated circuits and reference designs help you create battery junction box designs that enable highly accurate monitoring of and control over the high-voltage battery stack.

Design requirements

Battery junction box designs often require:

  • Resolution of voltage and temperature measurement on cell level.
  • Accurate current sense on pack level.
  • Following state-of-the-art architecture regarding system redundancy in order to allow implementation of the system on the highest safety level.

Block diagram

Find products and reference designs for your system.

Battery junction box

` ` High voltage High voltage Low voltage Low voltage Current sense Current sense PACK+ PACK+ CHARGE- CHARGE- Pyro-fuse Pyro-fuse 12V HV 12V HV PACK- PACK- SPI SPI CHARGE+ CHARGE+ LINK+ LINK+ LINK- LINK- ` ` 12V supply (LV battery) 12V supply(LV battery) CAN interface CAN interface ` ` High voltage sensing & isolation monitoring High voltage sensing&isolation monitoring HV resistor divider HV resistordivider HV solid-state switch HV solid-state switch Operational amplifier Operational amplifier Isolated amplifier Isolated amplifier Safety breaker Safety breaker Pyro-fuse driver Pyro-fuse driver Precharge driver Precharge driver Solid-state switch driver Solid-state switch driver Switch control Switch control Contactor driver (low side) Contactor driver(low side) High-side switch High-side switch Environment sensing & storage Environment sensing & storage Temperature sensor Temperaturesensor Humidity sensor Humiditysensor Pressure & gas sensor Pressure & gas sensor EEPROM EEPROM BDU controller BDU controller Pack monitor Pack monitor MCU MCU Isolation Isolation Isolated power supply Isolated power supply Digital isolator Digital isolator Communication (optional) Communication (optional) Smart CAN responder Smart CAN responder Circuit protection Circuit protection Reverse battery protection Reverse battery protection ESD components ESD components

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