Battery Pack Access Layout for Electric Working Vehicle Maintenance
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Solution Overview
Problem
Working vehicles with electric motors as driving sources face challenges in maintaining components like battery management unit boards and charging fuses due to varying cover locations and the need to remove the battery pack for access, leading to time-consuming and cumbersome maintenance processes.
Innovation Solution
The configuration of the working vehicle includes a battery pack compartment with accessible maintenance openings and covers for components like battery management unit boards, charging fuses, and service plugs, allowing easy access without removing the battery pack or exposing the floor plate, with distinct openings for components based on their maintenance frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If maintenance components are placed in the battery pack compartment, then components like battery management unit board, cell management unit board, charging fuse, and service plug can be accessed through the battery cover opening, but the battery pack structure becomes more complex with multiple maintenance openings and covers
Solution Approach 1:
The battery pack compartment is segmented into multiple maintenance openings (first, second, and third maintenance openings) with corresponding maintenance covers. Each opening provides access to specific components based on their maintenance frequency, allowing maintenance workers to access only the necessary components without exposing the entire battery pack compartment.
Solution Approach 2:
Different maintenance openings are provided at different locations within the battery pack compartment based on the specific maintenance needs of different components. The first maintenance opening is positioned for high-frequency maintenance components, the second for medium-frequency components, and the third for low-frequency components, optimizing access efficiency for each specific maintenance task.
2Productivity
If all maintenance components are accessible through a single battery cover opening, then the structure is simpler, but components with different maintenance frequencies require the same access path reducing efficiency
Solution Approach 1:
The maintenance access system is segmented into three distinct maintenance openings, each dedicated to components with specific maintenance frequency characteristics. This segmentation allows maintenance workers to directly access the required components based on maintenance needs, eliminating the need to open all covers and improving maintenance productivity.
Solution Approach 2:
The maintenance cover system is designed to be dynamically configurable, where covers can be opened or closed based on specific maintenance requirements. This dynamic access system allows the battery pack compartment to adapt to different maintenance scenarios, providing efficient access to the necessary components while maintaining security and protection for other areas.
Data Source
AI summary
Maintenance of components to be maintained is facilitated in a working vehicle equipped with an electric motor as a driving source of a working unit. A working vehicle 1 includes an upper slewing body, a lower traveling body, working units that is operated by hydraulic pressure, an electric motor for driving the working units, a battery pack for supplying power for driving the electric motor: a battery pack compartment for installing the battery pack: and a battery cover that is openable and covers an opening in the battery pack compartment. In the battery pack, at least a battery management unit board, a cell management unit board, a charging fuse, and a service plug are disposed as the components to be maintained at positions within a reach of a maintenance worker's hand through the opening.