Mobile Battery Swap Trailer for Remote EV Charging Autonomy

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current electric vehicles face limitations in autonomy due to battery power density, requiring a distributed network of charging stations, and existing mobile charging solutions are inadequate for remote and unstructured environments, while fixed battery swap stations lack mobility.

Innovation Solution

A trailer equipped with solar panels, wind turbines, and autonomous battery swapping capabilities, integrated with sensors and communication modules, enabling independent battery charging and swapping in remote locations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If fixed battery swap stations are used, then battery swapping capability is provided, but mobility and adaptability to remote locations are lost

Engineering Contradiction:
ImprovemobilityVSAvoidinfrastructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fixed battery swap station is segmented into a mobile trailer unit that can be transported to remote locations. The trailer contains all necessary battery swapping equipment, including battery racks, charging systems, and control mechanisms, allowing the functionality to be separated from fixed infrastructure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from a static fixed station to a dynamic mobile trailer that can be relocated. The trailer is equipped with towing capabilities and can be moved to different sites, providing adaptive battery swapping services wherever electric vehicles need support.

Inventive Principle:
Principle #15Dynamics

2Quantity of substance

If mobile charging devices are used, then portability is achieved, but total electric capacity and charging efficiency are limited

Engineering Contradiction:
Improvetotal electric capacityVSAvoiduser convenience
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The mobile trailer contains multiple batteries nested within its structure, with battery racks holding several battery units. This nested arrangement allows the trailer to store substantial electric capacity while maintaining a compact, transportable form factor.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The trailer is equipped with autonomous battery swapping mechanisms that can operate without constant human intervention. The system includes automated guidance, battery handling, and charging functions that reduce the need for user operation while maintaining convenience.

Inventive Principle:
Principle #25Self-service

3Reliability

If distributed charging stations are deployed, then autonomy support is improved, but infrastructure cost and deployment complexity increase

Engineering Contradiction:
Improveautonomy supportVSAvoidinfrastructure deployment
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mobile trailer is designed as a universal platform that can serve multiple functions: battery swapping, charging, and vehicle support. It can accommodate different electric vehicle types and battery configurations, reducing the need for multiple specialized infrastructure deployments.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The trailer acts as an intermediary between fixed charging infrastructure and remote vehicles. It can be transported to locations where vehicles need support, serving as a mobile intermediary that bridges the gap without requiring permanent infrastructure installation.

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Provides reliable and independent battery swapping without reliance on fixed infrastructure, enhancing flexibility, reducing downtime, and promoting sustainable practices.

Implementation Method 1

The trailer possesses its own solar panels or wind turbines to generate electricity to charge the batteries

Methodology Applied
Scientific EffectSolar energy conversion: Photovoltaic Effect

Implementation Method 2

The trailer possesses its own solar panels or wind turbines to generate electricity to charge the batteries

Methodology Applied
Scientific EffectWind power generation: Wind Power

Data Source

PatentEP4703186A1Trailer for battery swapping of an electric vehicle, and method thereof
Publication Date: 2026.03.04 BOLD ROBOTICS LDA
  • EP4703186A1 patent drawingFigure 1~2
  • EP4703186A1 patent drawingFigure 3A~4C
  • EP4703186A1 patent drawingFigure 5A~5B

AI summary

The present document discloses a trailer for battery swapping of an electric vehicle comprising: a pair of supporting bases for elevating the electric vehicle; a set of rolling supports for supporting a battery being displaced; a lift table for lifting a battery to a battery slot from the top of the set of the rolling supports and for lowering a battery from the battery slot to the top of the set of the rolling supports; a linear guide rail for guiding horizontally the lift table; a battery for being placed into the electric vehicle; a power charger for charging a discharged battery; a mobile platform for carrying the pair of supporting bases and the linear guide rail; wherein the lift table is placed between the pair of supporting bases; wherein the lift table comprises two side walls configured to push a battery; wherein the vertical distance from the set of rolling supports to the bottom of the electric vehicle is at least the height of the battery; wherein the linear guide rail comprises a threaded rod and motor for moving the lift table. It is further disclosed a method of operation of the trailer.