Detachable Battery Chassis Structure for Expansion Damage Relief
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Solution Overview
Problem
Existing electronic devices with batteries, such as laptops, face issues of battery expansion leading to chassis deformation and damage, necessitating costly repairs due to battery failure.
Innovation Solution
A chassis design with detachable engagement pieces and slope surfaces on the edges of the chassis members that allow smooth detachment and prevention of chassis damage during battery expansion, using screws, magnets, and elastic engagement parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the battery is housed in a fixed chassis, then the battery can be securely mounted, but the chassis may be damaged when the battery expands due to failure
Solution Approach 1:
The engagement pieces are designed to be detachable rather than permanently fixed, allowing the chassis structure to dynamically respond to battery expansion. When the battery expands, the engagement pieces can disengage from the receiving parts, preventing transmission of expansion forces to the chassis and avoiding damage while maintaining secure mounting during normal operation.
Solution Approach 2:
The chassis is divided into separable components through the engagement piece-receiving part interface. This segmentation allows the battery compartment to be isolated from the main chassis structure, so that battery expansion affects only the removable battery assembly rather than the entire chassis, preventing structural damage.
2Strength
If the chassis is designed as a single integrated structure, then structural strength is improved, but repair cost increases when battery failure occurs
Solution Approach 1:
The chassis is segmented into a main body and a detachable battery housing section connected through engagement pieces. This allows the battery compartment to be separated and replaced independently from the main chassis structure, enabling cost-effective repair by replacing only the battery assembly rather than the entire chassis when battery failure occurs.
Solution Approach 2:
The design enables selective replacement of the battery compartment as a separate unit. When battery failure occurs, only the affected battery housing section needs to be discarded and replaced, while the main chassis structure is recovered and reused, significantly reducing repair costs compared to replacing an integrated chassis.
3Stability of the object's composition
If engagement pieces are provided at both ends of the chassis edge, then connection stability is improved, but device complexity increases
Solution Approach 1:
The engagement pieces and receiving parts are designed as standardized components that serve multiple functions: providing mechanical connection, enabling detachability for repair purposes, and allowing controlled disengagement during battery expansion. This multi-functionality reduces the need for additional specialized components, managing complexity while achieving connection stability.
Data Source
AI summary
An electronic apparatus includes: a chassis having a first chassis member which has a first edge and a second edge that are substantially parallel to each other and which is formed in a substantially rectangular plate shape, and a second chassis member to which the first chassis member is detachably connected; a battery housed in the chassis; a plurality of screws which are provided along the first edge of the first chassis member and which fasten the first edge to the second chassis member; a first engagement piece which is provided on one end portion in a longitudinal direction of the second edge of the first chassis member and which protrudes facing outward relative to the second edge; a second engagement piece which is provided on the other end portion in the longitudinal direction of the second edge of the first chassis member.