Brake Mode Switching Mechanism for Electrical Failure Backup

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

As a vehicle's electrical system ages and becomes faulty, especially when related to safety performance like braking, there is a critical need to ensure driving safety without relying on functional electrical systems.

Innovation Solution

A braking mode switching apparatus that automatically switches between electrical and mechanical braking modes based on the electrical system's state, using a motion control component with stoppers and transmission members to engage different braking modes, and includes an elastic member for automatic reset and a brake control system with a feedback assembly and brake cable for natural and safe operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the electrical system is used for braking control, then braking performance is improved, but reliability deteriorates when the electrical system fails

Engineering Contradiction:
Improvebraking reliabilityVSAvoidbraking mode adaptability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The braking mode selection component is designed to dynamically switch between first and second braking modes based on the operational state of the driver. The motion control component enables automatic transition between modes, making the braking system adaptive to electrical system failures while maintaining reliable braking performance.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the operational parameter of the braking mode based on the driver's power state. When the driver is powered on, the system operates in the first braking mode; when powered off, it switches to the second braking mode, allowing the system to adapt to different electrical conditions while ensuring continuous braking reliability.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If manual mode switching is required, then adaptability is improved, but ease of operation deteriorates

Engineering Contradiction:
Improvebraking mode switching capabilityVSAvoidmanual intervention requirement
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The motion control component is configured to automatically detect the driver's power state and autonomously switch between braking modes without requiring manual intervention. The system serves itself by monitoring its own operational state and making appropriate mode transitions, thereby maintaining adaptability while improving ease of operation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The motion control component continuously monitors the operational state of the driver and provides feedback to the braking mode selection component. This feedback mechanism enables automatic mode switching based on real-time system conditions, eliminating the need for manual operation while maintaining adaptability to different braking scenarios.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If the driver is subject to reverse acting force, then braking mode switching is improved, but temperature increases due to overheating

Engineering Contradiction:
Improvebraking mode switching responseVSAvoiddriver temperature
Core Design Contradiction:
Adaptability or versatilityVSTemperature

Solution Approach 1:

The transmission member is pre-configured with engagement structures that allow smooth transition between braking modes. By designing the transmission path in advance with proper engagement geometry, the system achieves responsive mode switching without subjecting the driver to excessive reverse acting forces, thereby preventing overheating while maintaining adaptability.

Inventive Principle:
Principle #10Preliminary action

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 continuous braking performance without manual intervention, preventing accidents and overheating issues by automatically switching to mechanical braking when the electrical system fails, ensuring safe driving even in faulty conditions.

Implementation Method 1

the braking mode switching apparatus further includes an elastic member, coupled to the cylindrical body of the motion control component, and configured to reset the cylindrical body when the driver is not powered on

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4186759B1Braking mode switching apparatus and brake control system for vehicle
Publication Date: 2023.12.20 HUAWEI DIGITAL POWER TECH CO LTD
  • EP4186759B1 patent drawingFigure 1
  • EP4186759B1 patent drawingFigure 2
  • EP4186759B1 patent drawingFigure 3

AI summary

A brake control system for a vehicle comprises a braking mode switching apparatus (1) which includes a braking mode selection component (20), a transmission member (30), a stopper (10), a driver (70), and a motion control component (40). The braking mode selection component (20) can move between a first position corresponding to a first braking mode and a second position corresponding to a second braking mode. The transmission member (30) is coupled to the braking mode selection component (20) and has a first transmission portion (31) and a second transmission portion (32). The stopper (10) includes a first stopper portion (11) and a second stopper portion (12). The motion control component (40) is disposed on an output shaft (72) of the driver (70) and coupled to the braking mode selection component (20). The motion control component (40) is configured to abut against the first stopper portion (11) in response to a case in which the driver (70) is powered on, where the braking mode selection component (20) is located in the first position, so that the first transmission portion (31) engages with a first execution portion (80); and abut against the second stopper portion (12) in response to a case in which the driver (70) is not powered on, where the braking mode selection component (20) is located in the second position, so that the second transmission portion (32) engages with a second execution portion (90).