Refuse Truck Loading System Energy Module Capacitor Voltage Drop
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Solution Overview
Problem
Conventional refuse truck loading systems experience peak energy demands during bin lifting and tilting, leading to overloading of the drive system and reduced lifespan due to voltage drops during high current flows, limiting the system's capacitance and efficiency.
Innovation Solution
The loading system incorporates an energy module with a capacitor, such as a supercapacitor, to supply energy during peak loads, reducing reliance on the vehicle's energy source and maintaining a stable voltage, allowing for increased capacitance and efficient operation without modifying existing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lifting drive system relies on the vehicle battery for energy supply during peak loads, then the system can operate with existing energy sources, but voltage drops occur during high current flows which limits system capacitance and efficiency
Solution Approach 1:
The patent combines the vehicle battery with a capacitor-based energy storage device to form a hybrid energy supply system. The capacitor is electrically connected in parallel with the battery and provides supplemental energy during peak load periods, merging two different energy storage technologies to overcome the limitations of either system alone.
Solution Approach 2:
The capacitor is pre-charged during periods of low energy demand when the lifting mechanism is idle or operating at low power. This preliminary energy storage allows the capacitor to immediately discharge and provide peak power during sudden high-demand operations, preventing voltage drops before they occur.
2Power
If the lifting drive system is designed to handle peak loads, then the system can lift heavy bins effectively, but the drive system must take a larger form and may have shorter working life due to periodic overloading
Solution Approach 1:
The system merges the high-power, short-duration energy delivery capability of capacitors with the high-energy, sustained delivery capability of the vehicle battery. This combination allows the drive system to achieve high peak power without requiring an oversized motor or drive components, as the capacitor handles the peak power surge while the battery provides baseline power.
Solution Approach 2:
The energy supply system dynamically switches between battery-only operation, capacitor-supplemental operation, and capacitor-dominant operation based on real-time power demands. The control system monitors load conditions and automatically adjusts the energy contribution from each source, optimizing system performance and component utilization.
3Adaptability or versatility
If the vehicle's energy source is used to meet peak energy demands, then the loading system can operate independently, but the vehicle specifications are exceeded and voltage drops limit the capacitance
Solution Approach 1:
The patent creates a multi-source energy architecture that merges the vehicle battery, the capacitor energy storage device, and potentially external power sources. This hybrid system provides energy independence for the loading system while distributing the power demand across multiple sources, preventing any single source from being overloaded beyond its specifications.
Solution Approach 2:
The capacitor acts as an intermediary energy buffer between the vehicle battery and the lifting drive system. During peak loads, the capacitor mediates the power transfer by absorbing the sudden energy demand and releasing stored energy, preventing direct high-current draws from the battery that would cause voltage drops and exceed vehicle electrical specifications.
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
The energy module effectively manages peak energy demands, reducing voltage drops and increasing system capacitance by 20-25%, enhancing the loading system's effectiveness and reducing the risk of malfunctions, while allowing for flexible energy supply and potential full energy autonomy during emptying cycles.
Implementation Method 1
an energy module comprising a capacitor for providing energy to the lifting drive via the power supply connection
Data Source
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AI summary
The invention relates to a loading system, a refuse truck provided therewith and method therefor. The loading system comprises: - a frame attachable with coupling means to the collector; - a lifting mechanism arranged on the frame for picking up and lifting the bin; - a lifting drive system operatively connected to the lifting mechanism, wherein the lifting drive system comprises: - a lifting drive provided with a power supply connection and configured to drive the lifting mechanism; and - an energy module comprising a capacitor for providing energy to the lifting drive via the power supply connection.