Vehicle Activation System with Interruption Circuit
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Solution Overview
Problem
Existing vehicle activation systems fail to stop the control device when an abnormality causes the charging start signal circuit to remain in a current-conducting state, leading to potential over-discharge of the battery and inability to activate the control unit when necessary.
Innovation Solution
A vehicle activation system that includes a power supply relay, an activation circuit connecting a backup power supply to the relay, and an interruption circuit to manage power supply to the control device, allowing it to be activated and stopped effectively, even in abnormal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the charging start signal circuit is used to activate the control unit, then the control unit can be activated while the vehicle is stopped, but the control unit cannot be stopped when a ground fault or switch fixation causes the circuit to remain constantly in an on-state
Solution Approach 1:
A relay is introduced as an intermediary device between the charging start signal circuit and the control unit's power supply. The relay acts as a mediator that can independently control the power flow to the control unit, separating the activation signal path from the power supply path. This allows the control unit to be stopped by cutting power through the relay, even when the charging start signal circuit remains stuck in an on-state due to ground faults or switch fixation issues.
2Productivity
If the charging start signal circuit remains constantly in a current-conducting state due to ground fault or switch fixation, then current continues to be passed to the control unit, but the battery becomes over-discharged and the control unit cannot be activated when necessary
Solution Approach 1:
The relay serves as a power supply intermediary that controls the electrical connection between the battery and the control unit. By using the relay's normally closed contact in series with the battery positive terminal, the system can interrupt power supply to prevent battery over-discharge, while still allowing the control unit to be activated when needed through proper relay control.
Solution Approach 2:
The system incorporates a feedback mechanism where the control unit monitors the state of the charging start signal circuit and relay. When abnormal conditions are detected (such as ground faults or switch fixation), the control unit can command the relay to open,切断 power supply and prevent further battery discharge, thereby protecting the battery while maintaining system controllability.
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
Ensures the control device can be stopped upon occurrence of abnormalities causing continuous current flow, preventing battery over-discharge and enabling proper activation and deactivation as needed.
Implementation Method 1
a power supply relay provided between the control device and the battery and capable of turning on/off the supply of electric power from the battery to the control device
Implementation Method 2
current is passed from the backup power supply circuit to the signal circuit in response to turning on of the switch, so that electric power is supplied from the backup power supply circuit to the power supply relay
Data Source
AI summary
A vehicle activation system is configured so that when a switch is turned on, current is passed from a backup power supply circuit to a signal circuit and electric power is supplied from the backup power supply circuit to a power supply relay. The vehicle activation system includes an interruption circuit which is capable of interrupting the supply of electric power from the backup power supply circuit to the power supply relay.