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Battery Management System with Life Indicator for Battery Packs

Overview

This design is tailored for battery-powered applications that require a charging system with a mechanism for displaying battery life. The E-paper display provides a low-power option for a life indicator, allowing users to check battery status at any time.

System Benefits:

  • The fuel gauge IC (FGIC) with an integrated RL78 MCU provides a full battery management system, ensuring accurate monitoring and control.
  • Wireless power system enables easy power charging with an additional USB-C input for flexible power options.

Block Diagram

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4:3 ratioSheet.1Sheet.2Sheet.3Sheet.4US154US154US154Inductor Coreless (Air conductor)Sheet.28Sheet.29Sheet.30Sheet.31Sheet.32Sheet.33Sheet.34Sheet.35Sheet.36Inductor Iron CoreLine.841Inductor Air Core.212Sheet.40Sheet.41Sheet.42Sheet.43Sheet.44Sheet.45Sheet.46Sheet.47Sheet.48RelaySheet.51Sheet.52Sheet.53USB-CUSB-CUSB-CUSB-CSheet.56Sheet.57Sheet.58Sheet.59Sheet.60Sheet.61Sheet.62Sheet.63Sheet.64Sheet.65Sheet.66Sheet.67Sheet.68Capacitor Non-polarizedSheet.152Sheet.153Sheet.154Sheet.155Capacitor Non-polarized .156Sheet.157Sheet.158Sheet.159Sheet.160Capacitor Non-polarized .161Sheet.162Sheet.163Sheet.164Sheet.165Battery 3-CellSheet.167Sheet.168Sheet.169Sheet.170Line 1pt.1552Line 1pt.1608Sheet.173Sheet.174Ground (earth)Sheet.176Sheet.177Sheet.178Sheet.179Resistor - FixedGround (earth).181Sheet.182Sheet.183Sheet.184Sheet.185Sheet.186Sheet.187Diode.316Sheet.189Sheet.190Sheet.191Sheet.192Sheet.193Diode.316Sheet.195Sheet.196Sheet.197E-Paper DisplayE-Paper DisplayE-Paper DisplaySheet.339Sheet.340Sheet.341Sheet.342Sheet.343Sheet.345Sheet.346Sheet.347Sheet.348Sheet.349Sheet.350Sheet.352Sheet.353Sheet.371Sheet.372Sheet.374Sheet.375Sheet.376Sheet.377Sheet.378Sheet.379Sheet.380Sheet.381Sheet.383Sheet.384Sheet.278Sheet.279Sheet.280Sheet.281Sheet.283Sheet.284Sheet.285Line.34Left arrow.36Line.37Sheet.291Connector 1.39Connector 1.41Sheet.312Line.385Sheet.389Sheet.390Sheet.391Sheet.392Sheet.393Sheet.394Sheet.395Line.396Left arrow.397Line.398Sheet.399Connector 1.400Connector 1.401Sheet.402Line.403Sheet.404Sheet.405Sheet.406Sheet.407Connector 1.165Sheet.409Sheet.410Sheet.411Sheet.412Sheet.413Sheet.414Sheet.415Sheet.417Sheet.418Sheet.419Sheet.420Sheet.421Sheet.422Sheet.423Sheet.424Sheet.425Sheet.426Sheet.427Sheet.429Sheet.430Sheet.432Sheet.433Sheet.435Sheet.436Sheet.437Sheet.438Sheet.439Sheet.440Sheet.441Sheet.442Sheet.444Sheet.445Connector 1.165.452Sheet.453Sheet.454Sheet.4554-20V4-20V4-20VSheet.457Sheet.458Sheet.461Sheet.462Sheet.463Connector 1.165.466Connector 1.165.467Connector 1.165.468Travel AdapterTravel AdapterTravel AdapterVsysVsysVsys12.6V12.6V12.6V2-4 Cells2-4 Cells2-4 CellsSheet.473Sheet.474Sheet.475Sheet.476Sheet.477Sheet.478Sheet.479Sheet.480Sheet.481Sheet.4823.3V (30mAmax)3.3V (30mAmax)3.3V (30mAmax)Connector 1.165.489Sheet.490Sheet.491System LoadSystem LoadSystem LoadWireless Power TransmitterWireless Power TransmitterWireless Power TransmitterSheet.501Sheet.502Sheet.505Sheet.507Connector 1.508 2222Sheet.511Sheet.512Sheet.513Sheet.514Sheet.515Sheet.516Wireless Power ReceiverWireless Power ReceiverWireless Power ReceiverWireless Power ReceiverVOUTVOUTVOUTI2CI2CI2CNVDCNVDC ChargerNVDC ChargerNVDC ChargerI2CI2CI2CLi-Ion Battery ManagerLi-Ion Battery ManagerLi-Ion Battery ManagerLi-Ion Battery ManagerFET DriverFET DriverFET DriverGPIOGPIOGPIO I2CI2CI2CSPISPISPILDOLDOLDO

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News & Blog Posts

Blog Post
Apr 26, 2022
Is My Battery Ready to Do Its Job?

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