Charging control unit

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

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Battery management system

The electronics and software that keep a battery inside its safe window: measuring every cell voltage and many temperatures, estimating SOC and SOH, balancing cells, computing current limits, controlling the contactors and reporting over the vehicle network.

DIN 70121

The German specification for the digital communication between an electric vehicle and a DC charger in the Combined Charging System, the forerunner of ISO 15118. Most DC chargers in Europe still speak it, so vehicles support both.

EVCC and SECC

The two ends of high-level charging communication: the electric vehicle communication controller in the vehicle and the supply equipment communication controller in the charger. They exchange limits, schedules and authorisation over power-line communication on the control-pilot wire.

ISO 15118

The communication standard between an electric vehicle and a charging station: identification, authorisation, charge scheduling and, in the −20 edition, bidirectional power transfer. It is what lets a car authenticate itself and start charging with no card or app.

Onboard charger

The converter inside the vehicle that turns AC from a home or public socket into DC for the pack, typically rated 7–22 kW. DC fast chargers bypass it, which is why they can be so much more powerful.

Pantograph charging

Fast charging of a bus through an automatic contact on the roof — raised from the vehicle or lowered from a mast — at the terminus or en route, at 150–600 kW for a few minutes. It allows a smaller battery at the price of high-rate cycling and more infrastructure.

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.