Earthmoving Machine Power Split for Peak Load and Thermal Control
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Solution Overview
Problem
Earthmoving machines with electrical power sources face varying power demands during different work cycles, particularly high load conditions that can lead to increased power consumption and potential overheating, necessitating a more efficient management of electrical power distribution.
Innovation Solution
An earthmoving machine equipped with a primary power source and an auxiliary power source, controlled by an electronic controller, that dynamically allocates and converts power during low load conditions to recharge the auxiliary power source, using a computer-implemented recharging process to manage power distribution efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the primary power source is sized to meet peak high load conditions, then sufficient power is available during high load operations, but the system experiences increased overheating and reduced operational efficiency during low load conditions
Solution Approach 1:
The power source is segmented into two separate components: a primary power source sized for low load conditions and an auxiliary power source that activates during high load conditions. This segmentation allows each power source to be optimally sized for its specific operating regime, preventing the primary power source from overheating while ensuring sufficient power during peak demand.
Solution Approach 2:
The system dynamically switches between operating modes by activating or deactivating the auxiliary power source based on real-time load conditions. The electronic controller monitors power demands and automatically engages the auxiliary power source when high load conditions are detected, and disengages it when load returns to normal levels, optimizing thermal management and efficiency.
2Power
If an auxiliary power source is added to provide supplemental power during high load conditions, then power availability is improved, but device complexity increases
Solution Approach 1:
The electronic controller automatically monitors power demands and manages the auxiliary power source without requiring manual intervention. The system self-regulates by detecting high load conditions and automatically activating the auxiliary power source, then deactivating it when conditions normalize, thereby managing complexity through automation rather than manual control systems.
Solution Approach 2:
The auxiliary power source is electrically integrated with the primary power source through a unified control architecture. Both power sources share common control circuitry and monitoring systems, allowing them to function as a coordinated unit rather than separate independent systems, thereby minimizing the increase in overall system complexity.
3Temperature
If the primary power source is downsized to reduce overheating, then thermal management is improved, but power availability during high load conditions becomes insufficient
Solution Approach 1:
The power source is segmented into two separate components: a primary power source sized for low load conditions and an auxiliary power source that activates during high load conditions. This segmentation allows each power source to be optimally sized for its specific operating regime, preventing the primary power source from overheating while ensuring sufficient power during peak demand.
Solution Approach 2:
The auxiliary power source is pre-configured and ready for immediate activation before high load conditions occur. The electronic controller continuously monitors system demands and has the auxiliary power source prepared to engage instantly when high load conditions are detected, ensuring uninterrupted power availability without requiring the primary power source to be oversized.
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 the size and capacity requirements of the primary power source, minimizes overheating, and optimizes power usage by providing supplemental power during high load conditions, enhancing the machine's operational efficiency and safety.
Implementation Method 1
an auxiliary power source to provide supplemental power to the hydraulic pump
Implementation Method 2
An electronic controller included with the earthmoving machine is programmed to convert a total required recharging power needed to recharge the auxiliary power source into a recharging power control setting that is applied during the low load condition to direct electrical recharging power to the auxiliary power source
Data Source
AI summary
An earthmoving machine includes a primary power source for supplying electrical power to one or more electrical motors during a work cycle and an auxiliary power source to supply supplemental power during a high load condition of the work cycle. To recharge the auxiliary power source, the total required recharging power can be determined and can be converted to a recharging power control setting to be applied during the low load condition of the work cycle. Recharging power can be directed from the primary electrical power source to the auxiliary power source in accordance with the recharging power control setting.