GPIO

Example

Use in Lemonergy

Separate quantities from encoding and transport.

This is a reference concept. No executable Lemonergy block has been verified for this term.

Connected concepts

Related concepts from the knowledge graph. Connections show context, not cause and effect. Hover or focus a linked term for its definition.

Embedded charger

A charging circuit built into the battery pack, so that the pack accepts raw power — a wall adapter, a car socket, USB — and applies the right profile for its own chemistry. One host can then take NiMH, lithium-ion or primary packs interchangeably; the costs are extra heat beside the cells and electronics discarded with the pack.

Firmware

The software that runs on a BMS or charger controller. Its version decides how SOC, limits and faults behave, so it is tracked like a part number, updated by flashing over CAN or over the air, and recorded in the battery passport.

I²C

A two-wire serial bus — one clock line and one data line, both pulled up — on which a controller addresses many small chips at 100 kbit/s, 400 kbit/s or faster. Inside a battery pack it links the fuel gauge, protection chip, memory and temperature sensors; SMBus is derived from it with tighter timing rules.

Microcontroller

The processor that runs BMS firmware: state estimation, protection, balancing decisions and communication. Automotive BMS controllers use safety microcontrollers with lockstep cores and hardware self-tests so they can meet ASIL C or D.

State-of-charge indicator

The row of LEDs or small display on a battery pack that shows remaining charge, often lit by a push button to save energy. Four or five LEDs, each worth 20–25 %, are usual. It is only as accurate as the fuel gauge behind it; a voltage-only gauge reads badly on a flat curve such as LFP’s.

References & further reading

Further reading on this topic

These sources provide broader context; they are not presented as citations for every statement in this entry.

1. 3rd generation of the CAN data link layer

   CAN in Automation, CAN Newsletter · 2020

   Topic background · Classical CAN, CAN FD and CAN XL data-link concepts; publication describes the 2020 state.

2. Getting Started with the BQ76925

   Texas Instruments · 2019

   Topic background · A concrete BMS analog front-end example: cell voltage, current, temperature measurement and MCU integration.