High-Voltage Distribution Box With Collision Open-Circuit Trigger
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Solution Overview
Problem
Existing electric vehicles face challenges in promptly disconnecting the high-voltage loop during collisions, leading to potential electric shocks and injuries due to failed modules or circuits, which current safety measures fail to address effectively.
Innovation Solution
A high-voltage distribution box with an open circuit trigger system that disconnects the series connection of high-voltage connectors upon receiving an initiation control signal, ensuring immediate power-down of the high-voltage system upon collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the airbag module sends a power-off signal through network or hard wire to disconnect main relays, then the high-voltage system is powered down, but the disconnection may be delayed or fail if modules, circuits, or actuators fail
Solution Approach 1:
The patent extracts the disconnection function from the complex network/control system and implements it through a dedicated mechanical trigger structure. The trigger is directly actuated by the collision signal, bypassing intermediate modules and circuits, thereby eliminating potential failure points and reducing response time.
Solution Approach 2:
The patent introduces a mechanical trigger as an intermediary between the collision detection and high-voltage disconnection. This trigger structure serves as a reliable mediator that directly translates collision signals into relay disconnection, ensuring consistent and fail-safe operation independent of electronic system states.
2Adaptability or versatility
If complex control networks and multiple modules are used to manage high-voltage disconnection, then control functionality is enhanced, but system complexity increases and potential failure points multiply
Solution Approach 1:
The patent extracts the essential disconnection control function from the complex networked system and implements it through a dedicated mechanical trigger structure with direct actuation, eliminating intermediate modules and reducing system complexity while maintaining control effectiveness.
Solution Approach 2:
Instead of using complex electronic control to manage relay disconnection, the patent inverts the approach by using a simple mechanical trigger structure that passively responds to collision signals, allowing the system to fail safe through mechanical design rather than active electronic control.
Data Source
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AI summary
A high-voltage distribution box having an open circuit trigger, a collision initiation system, and an electric vehicle include a distribution box housing, a first high-voltage connector, a second high-voltage connector, a low-voltage connector, and an open circuit trigger. The first high-voltage connector, the second high-voltage connector, and the low-voltage connector are provided on a surface of the distribution box housing, and the open circuit trigger is provided inside the distribution box housing. The first high-voltage connector and the second high-voltage connector are connected to a high-voltage loop of the electric automobile, and the first high-voltage connector and the second high-voltage connector are connected in series via the open circuit trigger. The low-voltage connector is connected to a control line of the electric automobile and configured to send an initiation control signal to the open circuit trigger at a moment of collision.