Portable EV Backup Battery for Spare-Tire Mounting and Rolling Transport
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Solution Overview
Problem
Electrified vehicles face challenges in recharging their traction battery packs away from typical charging stations, necessitating a portable and versatile battery backup solution.
Innovation Solution
A portable electrified vehicle backup battery system that can be mounted in place of a spare tire or wheel, featuring a cordset for electrical coupling, inductive charging capabilities, and a design that allows easy rolling and secure fastening to the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a portable backup battery is designed to be mounted in place of a spare tire, then the battery can be transported easily and stored when not in use, but the battery capacity and weight are limited by the spare tire space constraints
Solution Approach 1:
The backup battery system is divided into two separate units: a portable backup battery that fits in the spare tire well for easy transport and storage, and a larger stationary battery that provides additional capacity when available. This segmentation allows the mobile unit to maintain portability while the system as a whole achieves higher total capacity through the stationary component.
2Ease of operation
If the backup battery is designed with a round shape for rolling transport, then it can be easily moved on the ground, but the internal space for battery modules is reduced compared to rectangular designs
Solution Approach 1:
The backup battery housing is designed with a substantially round cross-section to enable rolling transport on the ground. This curved geometry facilitates easy movement by allowing the battery to be rolled along its length, significantly reducing the physical effort required to transport it compared to a rectangular design that would require lifting.
Solution Approach 2:
The battery system uses modular battery modules that can be efficiently arranged within the curved housing. The segmentation of battery cells into discrete modules allows for optimized space utilization within the constrained round geometry, maximizing energy storage capacity despite the curved shape limitations.
3Adaptability or versatility
If the backup battery includes both physical cordset connection and inductive charging capabilities, then charging versatility is improved, but device complexity increases
Solution Approach 1:
The backup battery is designed with multi-functionality to support multiple charging methods: wired charging through a cordset connection and wireless charging through inductive charging. This universal charging capability allows the battery to adapt to different charging infrastructures and user preferences, enhancing versatility without requiring separate devices for each charging method.
Solution Approach 2:
The battery controller serves as an intermediary that manages both wired and wireless charging operations. It coordinates power flow from different charging sources, monitors battery state, and controls the charging process for both cordset and inductive methods, thereby managing complexity through centralized control rather than separate independent systems.
4Adaptability or versatility
If the backup battery is designed to fit standard spare tire mounting points, then compatibility with various vehicles is improved, but the battery shape and size options are constrained
Solution Approach 1:
The backup battery is designed with universal compatibility to fit standard spare tire mounting points across different vehicle types including SUVs, trucks, and crossovers. The housing geometry is specifically configured to interface with common spare tire well dimensions and mounting mechanisms, allowing the same battery unit to be installed on various vehicle platforms without modification.
Solution Approach 2:
The battery housing employs a curved, substantially round cross-sectional shape that conforms to the circular geometry of spare tire wells. This curved design allows the battery to fit within the confined cylindrical space of typical spare tire compartments while maintaining structural integrity and providing adequate internal volume for battery modules.
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
Enables electrified vehicles to be charged at any location, providing a convenient and portable solution for recharging traction battery packs while also offering auxiliary power and communication capabilities.
Implementation Method 1
The system is able to charge the traction battery pack using the portable backup battery through physical or inductive coupling
Implementation Method 2
A portable electrified vehicle backup battery which includes a housing for a plurality of battery modules or cells
Data Source
AI summary
A portable electrified vehicle backup battery device includes a battery assembly that can be mounted and dismounted from a vehicle. The backup battery is able to recharge an electrified vehicle traction battery pack through a charging interface on the vehicle. The device can be rolled on the ground when it is dismounted from the vehicle. The backup battery system is capable of charging a vehicle when it is mounted or dismounted.