Battery Holding Frame Structure for Vibration-Safe Replacement
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Solution Overview
Problem
Existing article transport vehicles face challenges in securely fixing and easily replacing power storage bodies, such as batteries, due to vibration-induced mechanical loads and degradation over time, which affects their power storage performance.
Innovation Solution
The design incorporates a vehicle body frame with a bottom surface portion and a first rib, and a vehicle body cover with a top surface portion and a second rib, along with a holding member featuring a lower frame portion, an upper frame portion, and a joint portion, allowing the power storage unit to be sandwiched and positioned in multiple directions without the need for fastening members, enabling secure fixation and easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power storage body is firmly fixed using a container structure, then the power storage body is securely held during vibration, but the power storage body becomes difficult to replace
Solution Approach 1:
The holding member is divided into an upper frame portion and a lower frame portion that can be easily separated from each other. The upper frame portion engages with the vehicle body cover while the lower frame portion engages with the vehicle body frame, allowing the power storage body to be securely held during operation but easily replaced by simply separating the upper and lower frame portions without requiring complex disassembly tools or procedures.
2Ease of operation
If the power storage body is easily accessible for replacement, then the power storage body can be quickly swapped, but the power storage body may displace due to vibration during operation
Solution Approach 1:
The holding member acts as an intermediary structure between the power storage body and the vehicle body. It provides engagement portions that connect to both the vehicle body frame and cover, securing the power storage body during vibration while allowing easy replacement by simply separating the holding member's upper and lower frame portions. This intermediary structure resolves the contradiction by providing both secure fixation and easy replaceability.
3Reliability
If multiple fastening members are used to secure the power storage body, then the fixation is more reliable, but the device complexity increases
Solution Approach 1:
The holding member merges multiple fastening functions into a single integrated structure. Instead of using separate fastening members to secure the power storage body to both the vehicle body frame and cover, the holding member combines these functions by having its lower frame portion engage with the frame and its upper frame portion engage with the cover, thereby reducing the number of components and simplifying the overall structure while maintaining reliable fixation.
4Reliability
If the power storage body is mounted with complex fixing mechanisms, then the power storage body is securely fixed, but the maintenance and replacement become more difficult
Solution Approach 1:
The holding member provides a dynamic fixing mechanism that adapts to both operation and maintenance phases. During operation, the engagement portions of the upper and lower frame portions securely hold the power storage body against vibration. During maintenance, the same engagement portions allow easy separation by simply disengaging the upper frame portion from the vehicle body cover, eliminating the need for complex tools or procedures and making maintenance straightforward.
Data Source
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AI summary
A vehicle body frame 1 includes a first rib 12 protruding from a bottom surface portion 11 toward an upper side Z1 and extending along a first direction L. A vehicle body cover 2 includes a second rib 22 protruding from a top surface portion 21 toward a lower side Z2 and extending along a second direction H. A lower frame portion 7L of a holding member 70 that holds a power storage body B includes a first recessed groove portion 71a recessed from a lower end surface 73a toward the upper side Z1 and extending along the first direction L. An upper frame portion 7U of the holding member 70 includes a second recessed groove portion 72a recessed from an upper end surface 73b toward the lower side Z2 and extending along the second direction H. A power storage unit BU is sandwiched between the bottom surface portion 11 of the vehicle body frame 1 and the top surface portion 21 of the vehicle body cover 2 while the first recessed groove portion 71a is engaged with the first rib 12 and the second recessed groove portion 72a is engaged with the second rib 22.