Electromagnetic Brake Disc Braking Without Pads or Hydraulics
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Solution Overview
Problem
Existing brake systems for vehicles rely on frictional forces, leading to wear of components, risk of brake oil leakage, and potential electronic control unit burnout, due to the need for hydraulic pressure and actuator systems.
Innovation Solution
A brake apparatus using electromagnetic forces, specifically Lorentz forces, generated by currents flowing through a brake disc with conductive interfaces, to stop or reduce the rotation speed of the disc without mechanical wear or hydraulic pressure, thereby eliminating the need for brake pads and reducing the risk of oil leakage and electronic control unit failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a friction-based brake system using brake pads and hydraulic pressure is used, then braking force can be generated, but component wear occurs and brake oil leakage risk increases
Solution Approach 1:
The patent replaces the traditional mechanical friction-based braking system with an electromagnetic braking system. The brake generator converts rotational motion of the brake disc into electrical energy, which is then used to generate electromagnetic forces that oppose the rotation, creating braking force without mechanical contact or hydraulic pressure. This eliminates wear of brake pads and risk of brake oil leakage.
Solution Approach 2:
The patent eliminates the hydraulic pressure system entirely by using electromagnetic forces generated through the brake generator and disc interface to produce braking force. The system uses electrical fields and electromagnetic induction instead of hydraulic fluids and pressure mechanisms, removing all associated leakage risks and maintenance requirements.
2Ease of operation
If a hydraulic pressure system with actuators is used for braking, then braking control is achieved, but system volume and weight increase
Solution Approach 1:
The patent extracts and removes the heavy hydraulic pressure system, actuators, and associated components from the brake system. By using a brake generator that converts mechanical energy directly into electrical energy for electromagnetic braking, the system achieves braking control with significantly reduced weight and volume, while maintaining effective braking capability.
3Power
If a friction-based braking system is used, then braking force is generated, but electronic control unit burnout risk increases
Solution Approach 1:
The patent replaces the electronic control unit that would manage hydraulic pressure with an electromagnetic control system. The brake generator produces electrical energy that directly controls the electromagnetic braking force through the disc interface, eliminating the need for complex ECU-managed hydraulic actuators and reducing the risk of electronic burnout while maintaining braking power.
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
The electromagnetic brake system provides a durable, low-maintenance solution that reduces the risk of component wear and hydraulic pressure-related issues, enabling efficient braking without the need for frequent pad replacements or hydraulic systems, and potentially applicable to personal and micro mobility vehicles.
Implementation Method 1
the generated current generates an electromagnetic force while flowing through the disc interface and the brake disc
Implementation Method 2
a brake apparatus capable of braking a vehicle without causing wear of components or brake oil leakage by generating a torque in an opposite direction of a driving direction by using a Lorentz force
Data Source
AI summary
A brake apparatus includes: a brake controller configured to receive an output signal of a pedal travel sensor and generate current corresponding to a braking force based on the output signal; a disc interface configured to receive the generated current; and a brake disc electrically connected to the disc interface, wherein the generated current generates an electromagnetic force while flowing through the disc interface and the brake disc, and the brake disc is configured to stop rotating or be reduced in rotation speed by the generated electromagnetic force.