Fuel Cell Electrolysis Path for Prolonged Endurance Braking
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Solution Overview
Problem
Existing vehicle braking systems face overheating and excessive wear during prolonged endurance braking, particularly in downhill scenarios, leading to reduced braking performance and shortened lifespan.
Innovation Solution
Transfer electric energy generated during braking from electric motors to a fuel cell arrangement to perform electrolysis, converting water into oxygen and hydrogen, which is stored for later use, thereby dispersing excess energy and reducing motor heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If electric motors are used for prolonged braking, then braking performance is maintained, but the motors become overheated and braking duration is limited
Solution Approach 1:
The patent converts the harmful excess energy generated during braking (which causes overheating) into a beneficial resource by directing it to perform electrolysis in the fuel cell arrangement. This transforms the thermal problem into a chemical energy storage opportunity, allowing prolonged braking while utilizing the waste energy productively
Solution Approach 2:
The fuel cell arrangement acts as an intermediary energy management system between the electric motors and the vehicle's energy storage. It receives excess electrical energy from braking motors and converts it via electrolysis into stored chemical energy (hydrogen and oxygen), mediating the energy flow to prevent motor overheating
2Duration of action of moving object
If braking energy is dissipated as heat, then energy is removed from the system, but braking device lifespan is reduced due to excessive wear and overheating
Solution Approach 1:
Instead of dissipating braking energy as wasted heat that causes wear and overheating, the system converts this energy into useful chemical energy through electrolysis. This eliminates the harmful thermal effects while capturing the energy value, thereby extending braking device lifespan
Solution Approach 2:
The system changes the energy dissipation parameter from thermal form (heat) to chemical form (stored hydrogen and oxygen). This parameter transformation fundamentally alters how braking energy is handled, converting a destructive process into a constructive energy storage process
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
This method prolongs the duration of consistent braking by reducing motor heating and extending the lifespan of braking devices by dispersing excess energy through electrolysis, using available resources efficiently and safely.
Implementation Method 1
dispatching the transferred electric energy or power by causing the fuel cell arrangement to perform electrolysis driven by the transferred electric energy or power
Data Source
AI summary
A method is disclosed for enabling prolonged endurance braking for a vehicle comprising one or more electric motor(s) and a fuel cell arrangement configured to drive the electric motor(s). The method comprises—during braking by the electric motor(s)—transferring, from the electric motor(s) to the fuel cell arrangement, electric energy or power generated by the electric motor(s) during the braking, and dispatching the transferred electric energy or power by causing the fuel cell arrangement to perform electrolysis driven by the transferred electric energy or power. In some examples, electric energy or power generated by the electric motor(s) during the braking is transferred from the electric motor(s) to the fuel cell arrangement only when an energy storing system of the vehicle is unable to receive the generated electric energy or power for storage.