Hybrid Energy Storage System Schematic

EV power-architecture diagram with fuel cell, battery, and supercapacitor through DC-DC converters.

Prompt

A hybrid energy storage system schematic for an electric vehicle.

Three energy sources arranged on the left:
- Fuel Cell (with H2 + O2 inputs and water output) -> unidirectional DC-DC converter -> central DC bus.
- Battery Pack -> bidirectional DC-DC converter <-> central DC bus.
- Supercapacitor Bank -> bidirectional DC-DC converter <-> central DC bus.

Center: a bold horizontal "DC Bus" rail.

Right side:
- DC bus -> DC/AC inverter -> 3-phase Traction Motor (drawn as a circle with the M label).
- A separate auxiliary loads block (HVAC, lights) connected to the DC bus.

Annotate each converter with its function (boost, buck-boost) and arrow direction. Label energy-flow direction with bold colored arrows (orange for traction power, blue for regenerative braking).

Style: clean IEEE power-electronics schematic, gray / orange / blue palette, thin black borders, white background, sans-serif labels.

Use in Generator

When to use

For power-electronics, hybrid-vehicle, or grid-scale storage papers.

Variations

Add charging-station input

Add an external charging-station input (AC grid 240V) on the bottom-left, going through an AC/DC charger into the battery pack. Show it with a dashed boundary indicating "off-board".

Tips

Specify converter direction explicitly (unidirectional vs bidirectional). Models default to bidirectional otherwise.
Color-code energy flow direction. Two arrow colors are easier to read than one with reversed heads.
Always include the auxiliary loads block — without it the schematic looks incomplete.

FAQ

Can I show control signals separately from power flow?

Yes — add "Add a thin dashed control bus on top connecting all converters to a central VCU (Vehicle Control Unit) block."