EV Battery Deterioration Gauge With Tamper-Proof Analog Needle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric vehicle batteries lack a built-in deterioration meter to measure and display the battery's deterioration level, making it difficult to assess battery health without a separate meter.
Innovation Solution
An electric vehicle is equipped with a deterioration meter that includes an analog display unit with a movable needle indicating increasing battery deterioration, ensuring the deterioration level can be checked at any time and is tamper-proof.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate deterioration meter is used to measure battery deterioration level, then the deterioration level can be measured, but it cannot be easily known and requires additional equipment
Solution Approach 1:
The deterioration meter is integrated into the battery gauge assembly, combining the deterioration measurement function with the existing battery state display. This merging eliminates the need for separate deterioration meter equipment while enabling easy viewing of deterioration level alongside battery charge level through the same display interface
2Adaptability or versatility
If the needle can move in both directions on the analog display, then the display is flexible, but the measured deterioration level can be tampered with
Solution Approach 1:
The needle mechanism employs asymmetric movement constraints where the needle can only rotate in the clockwise direction (increasing deterioration) and cannot rotate counterclockwise. This asymmetric design prevents tampering by making it impossible to manually reduce the displayed deterioration level, while still allowing the needle to respond to actual deterioration increases
Solution Approach 2:
The needle mechanism incorporates preliminary anti-action by pre-configuring mechanical stops and one-way rotation constraints that prevent counter-clockwise movement before any tampering attempt can occur. This built-in preventive mechanism ensures the needle cannot be manually rotated to show lower deterioration levels, maintaining reliability from the outset
3Productivity
If the needle position is not kept in power-off state, then the display can be updated, but the measured deterioration level cannot be checked at any time
Solution Approach 1:
The needle position is preserved in a memory mechanism before power-off occurs, storing the last measured deterioration level indication. When power is restored, the needle returns to this previously stored position, enabling the deterioration level to be checked at any time regardless of power state while maintaining accurate representation of the battery's deterioration status
Data Source
AI summary
An electric vehicle according to an aspect of the present disclosure includes a driving motor, a battery configured to supply electric power to the driving motor, and a deterioration meter configured to measure a deterioration level of the battery. The deterioration meter includes an analog display unit configured to indicate the measured deterioration level by a needle, and the needle is movable only in a direction which indicates that the deterioration level increases. Further, the position of the needle is kept in a power-off state.