Dovetail Sliding Connection for External Electric Vehicle Battery
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Solution Overview
Problem
Current external battery solutions for electric bicycles and scooters are bulky, difficult to transport, and limited in placement options, failing to provide simultaneous ease of access, portability, and maintenance for shared vehicles.
Innovation Solution
An electrical energy storage device with a dovetail-type sliding connection system that allows secure attachment to various vehicle frames, featuring a cylindrical design with a USB-C connector and a Battery Management System, enabling easy installation, removal, and recharging, while minimizing short-circuit risks and optimizing energy density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a battery is designed to be compact and portable for personal use, then it becomes difficult to fit into personal bags and hard to access, but if it is made larger for easier access, then it becomes bulky and difficult to transport
Solution Approach 1:
The battery system is divided into a removable battery unit and a separate charging base. The battery unit can be easily carried in personal bags while the charging base remains stationary. This segmentation allows the battery to be compact for portability while maintaining easy access through the charging base interface.
2Ease of manufacture
If a battery is designed with parallel slideways for installation between sliding rails, then it becomes easy to install at specific locations, but then the number of possible installation locations on the vehicle is reduced
Solution Approach 1:
The charging base is designed with a universal docking interface that can accommodate the battery unit at multiple locations on the vehicle. The base unit remains stationary while providing charging capability at different positions, making the system adaptable to various installation locations without requiring parallel slideways at each position.
3Ease of operation
If a battery is made removable for recharging purposes, then it becomes easy to take away for recharging, but then it may become loose or unexpectedly unhooked during vehicle use
Solution Approach 1:
The battery unit features a curved or rounded docking interface that complements the charging base receptacle. This curved geometry provides natural retention through geometric interlocking while still allowing easy removal when needed, preventing unexpected unhooking during normal vehicle operation.
4Volume of moving object
If connectors are placed close together on the battery for compact design, then the battery size is reduced, but then the risk of short circuit between connectors increases
Solution Approach 1:
The connectors on the battery unit are positioned asymmetrically relative to each other and to the battery geometry. This asymmetric arrangement, combined with the curved docking interface, ensures that even when connectors are relatively close together for compact design, the geometric asymmetry prevents simultaneous contact with conductive surfaces that could cause short circuits.
Data Source
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AI summary
The invention relates to an electrical energy storage device (100) configured to cooperate with a surface of a vehicle structure, said surface being oriented towards the exterior of the structure, comprising an electrical connection means between the electrical energy storage device and an electrical circuit of the structure. Such an electrical energy storage device also comprises a first sliding means (120) configured on a face of the electrical energy storage device, the sliding means comprising one of the two elements of a dovetail joint, the first sliding means cooperating in a complementary manner with a second sliding means presented by the exterior surface of the structure, the second sliding means being the other element of the dovetail joint.