Dual Li-Ion Battery Switching for Extended EV Range
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electric vehicles face limitations in travel range and frequent charging needs due to battery power constraints and the lack of standardized charging infrastructure.
Innovation Solution
An extended range electric vehicle system utilizing two Li-ion batteries that alternately provide power and get recharged, with motors and alternators in each front wheel generating power and a generator motor at the rear converting rotational energy into electric energy for recharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single Li-ion battery is used to power the electric vehicle, then the device complexity is reduced, but the travel range is limited and frequent charging is required
Solution Approach 1:
The battery system is segmented into two separate Li-ion batteries instead of using a single battery. This segmentation allows the vehicle to alternate between batteries, with one battery powering the vehicle while the other charges, effectively doubling the travel range before external charging is needed.
Solution Approach 2:
The system implements self-service charging where the vehicle charges one battery using the other battery during operation. The alternator generates electricity during vehicle movement to recharge the depleted battery, eliminating the need for external charging stations and frequent stops.
2Reliability
If the vehicle stops frequently to recharge batteries at charging stations, then the battery power is maintained, but the loss of time increases significantly
Solution Approach 1:
The system maintains continuous useful action by alternating between two batteries during vehicle operation. While one battery is being depleted, the other is being recharged by the alternator, ensuring that power supply never中断 and the vehicle can continue operating without stopping for external charging.
Solution Approach 2:
The alternator continuously generates electricity to recharge the depleted battery during vehicle operation, performing the charging action in advance before the battery is completely depleted. This preliminary recharging action prevents the need for external charging stops.
3Ease of operation
If traditional charging infrastructure is used, then charging capability is provided, but the adaptability is reduced due to lack of standardization and limited availability
Solution Approach 1:
The vehicle becomes self-sufficient for charging by using its own alternator to recharge batteries during operation. This eliminates dependence on external charging infrastructure, providing adaptability to any location without requiring standardized charging stations.
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
This system extends travel range by minimizing the need for battery charging, reduces frequent recharging stops, and ensures consistent power delivery to the vehicle.
Implementation Method 1
a generator motor configured to convert rotational energy from the motors into electric energy for recharging the Li-ion batteries
Implementation Method 2
The alternators provide direct current to the vehicle's electric circuit and components
Data Source
AI summary
An electric vehicle system that includes a plurality of Li-ion batteries to alternately provide electric power to propel the vehicle, with a generator motor converting rotational energy from the motors installed in wheels of the vehicle into electric energy for recharging the Li-ion batteries. An onboard computer management system controls the system's operations, including switching between the Li-ion batteries for providing power to the vehicle based on power levels of the Li-ion batteries. The system automatically discontinues charging of a lithium-ion battery when its cut-off point is reached to prevent damage or fire hazards. The system eliminates the need to charge batteries at a charging station, enabling one battery to power the vehicle while the second is charged.