Modular Battery Pack Access for Electric Refuse Vehicles
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Solution Overview
Problem
Conventional refuse vehicles face challenges in efficiently powering and maintaining their energy systems, particularly in terms of accessibility, modularity, and downtime associated with battery charging, which affects operational efficiency and maintenance costs.
Innovation Solution
The development of an electric refuse vehicle equipped with a detachable and modular energy storage and generation system, including battery cells and control hardware, that can be easily accessed, replaced, and charged, allowing for 'hot-swapping' and reducing maintenance costs through even weight distribution and modular design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the battery system is integrated permanently into the vehicle body, then structural stability is improved, but accessibility for maintenance and replacement deteriorates
Solution Approach 1:
The battery system is divided into modular battery packs that can be independently removed and replaced. Each battery pack is a self-contained unit with standardized mounting interfaces, allowing individual packs to be accessed through the rear opening without disassembling the entire vehicle body structure.
Solution Approach 2:
The battery packs are designed to be extractable from the vehicle body through a rear opening. The modular design allows complete removal of battery packs for charging or replacement while the vehicle body remains intact, separating the energy storage function from the structural chassis.
2Device complexity
If the battery system is designed as a single integrated unit, then system simplicity is improved, but replacement time and operational downtime worsen
Solution Approach 1:
The complete battery system is segmented into multiple interchangeable battery packs. When one pack needs charging or replacement, only that specific pack is removed through the rear opening while other packs remain in place, enabling rapid swap operations without replacing the entire battery system.
Solution Approach 2:
Battery packs are pre-charged externally before being installed in the vehicle. The standardized interfaces and quick-release mechanisms are prepared in advance, allowing maintenance personnel to quickly swap depleted packs with pre-charged ones, minimizing operational downtime.
3Ease of repair
If the battery system is made accessible through the rear opening, then ease of maintenance is improved, but protection from environmental factors deteriorates
Solution Approach 1:
The battery packs are completely extracted from the vehicle body through the rear opening for maintenance and charging operations. This external access method eliminates the need for permanent openings or complex access mechanisms, maintaining vehicle body integrity while enabling easy battery pack removal and installation.
Solution Approach 2:
The rear opening serves as an intermediary access point that allows battery packs to be transferred between the protected vehicle interior and the external environment. Standardized mounting interfaces act as mediators, ensuring secure connection when packs are installed and protecting electrical contacts during the transfer process.
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 solution enhances operational uptime, reduces maintenance labor, and allows for future upgrades, enabling a smaller fleet to maintain higher operational periods with reduced downtime and costs.
Implementation Method 1
one or more battery cells configured to store electrical potential energy
Data Source
AI summary
A refuse vehicle including a chassis, a body assembly coupled to the chassis, the body assembly defining a refuse compartment, and an electric energy system, the electric energy system including one or more battery cells and control hardware, the electric energy system detachably coupled to the body and configured to be accessed by a door in the body, and wherein the one or more battery cells of the electric energy system are replaceable.