Split EV Battery with Controller for Fast Swapping
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Solution Overview
Problem
Electric vehicle battery recharging is slower compared to hydrocarbon fuel replenishment due to the limited rate of energy delivery from the electric grid, leading to inefficiencies and longer charging times.
Innovation Solution
A battery system comprising a fixed battery pack, a replaceable battery pack, and a battery controller that detects and compares the electrical characteristics of both packs to optimize power distribution to motors, preventing inefficiencies by controlling which pack powers the vehicle based on age and charge levels, allowing for quick energy replenishment by swapping the replaceable pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a single large battery pack is used in electric vehicles, then the vehicle can achieve longer driving range, but the recharging time becomes excessively long and energy replenishment rate is limited
Solution Approach 1:
The battery system is divided into multiple separate battery packs (first battery pack, second battery pack, third battery pack) instead of using a single large battery pack. This segmentation allows the vehicle to achieve long driving range by combining multiple packs while enabling faster energy replenishment by replacing depleted packs with charged ones, thus resolving the contradiction between driving range and recharging time.
2Duration of action of moving object
If battery packs of different ages are used to extend driving range, then the vehicle can operate longer, but inefficiencies occur due to mismatched electrical characteristics
Solution Approach 1:
The controller continuously monitors and detects the electrical characteristics (voltage, current, temperature) of each battery pack and uses this feedback information to intelligently control which packs are connected to power the vehicle. By comparing real-time electrical characteristics, the controller optimizes power distribution and prevents inefficient operation, thereby maintaining energy efficiency while extending operational duration through multiple packs.
Solution Approach 2:
The system dynamically switches between different battery packs based on their real-time electrical characteristics and charge levels. The controller can adjust which packs are active, which are charging, and which are in standby, creating a dynamic battery management system that adapts to changing conditions to maintain optimal energy efficiency while providing extended operational duration.
3Loss of time
If multiple battery packs are implemented for quick replacement, then recharging time is reduced, but the device complexity and control requirements increase
Solution Approach 1:
The controller serves multiple functions: it detects electrical characteristics of all battery packs, manages power distribution from active packs to the vehicle, controls charging of depleted packs, and coordinates pack switching. This multi-functionality reduces the need for separate control systems for each pack, thereby managing device complexity while enabling quick replacement and reducing charging time.
Data Source
AI summary
A battery for a vehicle having a fixed battery pack and a replaceable battery pack. The replaceable battery pack has electronic or mechanical locks to semi-temporarily hold the replaceable battery pack in place. The fixed battery pack is held in place via permanent or semi-permanent fasteners such as bolts. A battery controller controls the replaceable battery pack to power motors of the vehicle before controlling the fixed battery pack to power motors of the vehicle.