Road Paver Battery Power for Direct Screed Heating

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Solution Overview

Problem

Existing road construction machines face inefficiencies in energy consumption and environmental pollution due to the use of diesel engines for power generation, leading to significant energy losses and emissions.

Innovation Solution

Implementing an energy storage system, such as a battery, that is charged externally and directly supplies electric consumers on the machine, bypassing internal power generation systems, allowing for low-loss operation and reduced fuel consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If a generator driven by a pump transfer gearbox is used to supply power to electric consumers, then the electric consumers can be powered, but energy losses occur during power generation and fuel consumption increases

Engineering Contradiction:

Improveenergy efficiencyVSAvoidpower generation losses

Core Design Contradiction:

Use of energy by moving objectVSLoss of energy

Solution Approach 1:

The patent extracts the generator from the power transmission path by eliminating the pump transfer gearbox connection. The generator is now directly coupled to the diesel engine, removing the intermediate gearbox that caused energy losses during power generation and transmission.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical power transmission system (pump transfer gearbox) with a direct mechanical coupling between the diesel engine and generator. This substitution eliminates the mechanical losses associated with gear transmission while maintaining the ability to power electric consumers.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Power

If the generator is connected to the pump transfer gearbox for power generation, then the electric consumers can be supplied with power, but fuel consumption and environmental pollution increase

Engineering Contradiction:

Improvepower supply capabilityVSAvoidexhaust gas pollution

Core Design Contradiction:

PowerVSObject-generated harmful factors

Solution Approach 1:

The patent removes the generator from the power transmission path by eliminating the pump transfer gearbox connection. The generator is now directly coupled to the diesel engine, removing the intermediate gearbox that caused energy losses during power generation and transmission.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Use of energy by moving object

If the primary drive source is switched off to reduce fuel consumption, then fuel efficiency improves, but the electric consumers cannot be powered

Engineering Contradiction:

Improvefuel consumptionVSAvoidpower supply to electric consumers

Core Design Contradiction:

Use of energy by moving objectVSPower

Solution Approach 1:

The patent segments the power supply system into two independent paths: one for driving the road paver (diesel engine to pump transfer gearbox) and another for powering electric consumers (diesel engine directly to generator). This allows the generator to operate independently of the primary drive source, enabling electric consumers to be powered even when the main drive is off.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent creates a dynamic power supply architecture where the generator can be selectively engaged or disengaged from the diesel engine based on the power needs of electric consumers. This dynamic configuration allows the system to optimize fuel consumption by running the generator only when electric power is needed, while maintaining the ability to power consumers independently of the primary drive source.

Inventive Principle:

Principle #15Dynamics

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

This approach reduces energy losses and emissions by enabling direct power supply to electric consumers, even when the primary drive source is off, and enhances operational efficiency and environmental sustainability.

Implementation Method 1

an energy supply system with at least one electrical energy storage which can be charged by means of electric current generated outside the road construction machine and which is configured on the road construction machine as an internal power source for direct power supply to the electric consumer

Methodology Applied

Scientific EffectElectrical energy storage: Electrical Accumulator

Implementation Method 2

at least one electric consumer for heating the working unit

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS12559893B2Electrified road construction machine

Publication Date: 2026.02.24 JOSEPH VOEGELE AG

AI summary

A road construction machine in the form of a road paver or a feeder vehicle for conveying paving material to a road paver, the road construction machine being self-propelled and having a primary drive source, a hopper, at least one working unit and at least one electric consumer for heating the working unit, the road construction machine having an energy supply system with at least one electrical energy storage which can be charged by means of electric current generated outside the road construction machine and is present on the road construction machine as an internal power source for direct current supply to the electric consumer. Furthermore, the disclosure relates to the use of such an energy storage for direct current supply to an electric consumer of a road construction machine.