Portable Auxiliary Battery Pack for EV Range and Crash Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric vehicles have limited range due to battery capacity, requiring lengthy recharging and specific recharging stations, which can be inconvenient and impractical for long-distance travel.
Innovation Solution
A portable battery device with a high-voltage battery and an auxiliary battery system that allows for additional power supplementation through a case with electrical interconnection, enabling selective addition of auxiliary batteries for increased range and convenient management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the battery capacity is increased to extend the driving range, then the range is improved, but the vehicle weight and volume increase
Solution Approach 1:
The battery system is divided into a main high-voltage battery and separate auxiliary batteries. The auxiliary batteries can be independently added or removed based on driving range requirements, allowing the vehicle to achieve extended range without permanently increasing weight. The battery capacity is segmented into a base capacity (main battery) and an optional capacity (auxiliary batteries).
Solution Approach 2:
The battery configuration is made dynamic and adaptable. The vehicle can switch between different battery configurations by adding or removing auxiliary batteries, allowing the driving range to be adjusted based on actual needs. This dynamic approach enables the vehicle to optimize weight by carrying only the necessary battery capacity for each trip.
2Duration of action of moving object
If auxiliary batteries are added to extend range, then the driving range is improved, but the device complexity increases
Solution Approach 1:
The auxiliary batteries are designed with multi-functionality. They can serve as additional power sources for extended range, or be removed when not needed. The same auxiliary battery unit can be used by different vehicles or for different trips, reducing overall system complexity through standardized, universal components.
Solution Approach 2:
The auxiliary batteries are extracted as separate, independent units from the main battery system. This extraction allows them to be easily added or removed without affecting the core vehicle systems, simplifying the overall architecture by separating the optional range-extension function from the essential propulsion system.
3Use of energy by moving object
If the main battery is made larger to provide sufficient power, then the energy capacity is improved, but the vehicle dimensions increase
Solution Approach 1:
The total energy capacity is segmented between a compact main high-voltage battery and separate auxiliary batteries. This segmentation allows the main battery to remain small and fit within the vehicle's existing structure, while the additional energy capacity is provided by auxiliary batteries that can be placed in external locations such as the trunk or cargo area.
Solution Approach 2:
The battery system transitions from a single-dimension (internal vehicle space) to multi-dimensional configuration. The main battery occupies internal vehicle space, while auxiliary batteries can be positioned in external dimensions (trunk, cargo area, or even external mounting positions), effectively increasing energy capacity without increasing the vehicle's main body dimensions.
4Device complexity
If fixed battery configuration is used, then the device complexity is reduced, but the adaptability to different driving situations deteriorates
Solution Approach 1:
The battery system is designed to be dynamic and reconfigurable. Auxiliary batteries can be added or removed based on driving situation requirements, allowing the vehicle to adapt to different range needs without requiring a completely different battery system. This dynamic configuration maintains relatively simple fixed components while adding flexibility through optional elements.
Solution Approach 2:
The battery system allows for parameter changes in terms of total capacity and configuration. By adding or removing auxiliary batteries, the effective battery capacity parameter can be changed to match different driving situations (short trips, long trips, heavy load conditions), providing adaptability without requiring a complex variable-capacity battery system.
Data Source
AI summary
A portable battery device for a mobility apparatus and a battery management system and a method, which are capable of securing a desired range of the mobility apparatus by selectively adding an auxiliary battery in a situation in which a battery capacity should be additionally supplemented, are disclosed. The auxiliary battery is stored in the mobility apparatus or is supplied from an external supply source when the auxiliary battery is commercially available. Accordingly, electric power supply to the mobility apparatus becomes convenient. The auxiliary battery is simply replaceable through separation or mounting thereof from or in a case at an outside of the mobility apparatus. Accordingly, handling convenience of the auxiliary battery is enhanced. When collision of the mobility apparatus occurs, the auxiliary battery is separated due to impact and, as such, generation of fire caused by damage to the auxiliary battery is prevented and stability is secured.