Electric Vehicle Dual Battery Pack Segmentation for Range and Weight
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Solution Overview
Problem
The challenge is to increase the cruising distance of electric vehicles while reducing their weight, as existing battery solutions either increase weight or compromise on capacity when attempting to enhance range.
Innovation Solution
The electric vehicle design incorporates a dual battery pack system with a standard and optional pack, allowing for adjustable capacity and weight configuration, using an electric power supply switching unit to manage power distribution between the batteries and prevent excessive discharging, with both packs having the same structure to simplify manufacturing and management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the size of the battery is increased to increase the battery capacity, then the cruising distance is improved, but the weight of the entire electric vehicle is increased
Solution Approach 1:
The battery system is segmented into a standard battery pack (first battery) that is permanently mounted and an optional battery pack (second battery) that can be added or removed. This segmentation allows the vehicle to operate with just the standard battery for lighter weight applications, or with both batteries for extended cruising distance when needed, thus resolving the contradiction between cruising distance and weight.
2Duration of action of moving object
If the optional battery pack is mounted to increase battery capacity, then the cruising distance is improved, but the device complexity is increased
Solution Approach 1:
Both the standard battery pack and optional battery pack are designed with the same structure, terminal configuration, and connection interface. This universality allows the optional battery pack to be easily mounted or removed without requiring complex switching mechanisms or different connection protocols, thereby minimizing device complexity while still enabling extended cruising distance.
3Weight of moving object
If the electric vehicle is designed to operate with only the first battery, then the weight is reduced, but the cruising distance is limited
Solution Approach 1:
The battery system is designed to be dynamically configurable, allowing the optional battery pack to be mounted or removed based on the required cruising distance. When the vehicle needs to operate with reduced weight, only the standard battery pack is used. When extended range is required, the optional battery pack is added, thus dynamically adjusting the system to resolve the contradiction between weight and cruising distance.
Data Source
AI summary
An electric vehicle comprises an electric motor which rotates a wheel; a battery which is an electric power supply unit for the electric motor; and a battery accommodating space which is provided in a vehicle body and accommodates the battery therein; wherein the battery accommodating space includes a first accommodating section which stores a standard battery pack including a first battery as the battery, and a second accommodating section which accommodates an optional battery pack including a second battery as the battery such that the optional battery pack is removable from the vehicle body, and wherein a voltage of the first battery is a value corresponding to an activation voltage of the electric motor, and the electric vehicle is capable of driving with an electric power supplied from at least the first battery.