Fuel Cell Power Control for Battery Overconsumption Events
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Solution Overview
Problem
In vehicles with separate power sources, miscommunication between the electronic control unit (ECU) and the power source can lead to overconsumption of power, causing the battery's state of charge to drop below a minimum threshold, rendering it incapable of proper operation.
Innovation Solution
A system and method where a power source ECU determines overconsumption events by comparing current power consumption with requested power and increases fuel cell power generation to prevent battery discharge, ensuring the battery remains above the minimum state of charge threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power source ECU relies on power requests from vehicle ECUs to control fuel cell and battery power output, then the system operates with standard communication protocols between separate components, but miscommunication occurs causing actual power draw to exceed requested power, leading to battery state of charge dropping below minimum threshold
Solution Approach 1:
The power source ECU continuously monitors actual power consumption from the vehicle electrical system and uses this feedback to adjust fuel cell power output in real-time, ensuring power generation matches actual demand rather than relying on potentially inaccurate requests from vehicle ECUs
Solution Approach 2:
The power source ECU acts as an intermediary that receives power requests from vehicle ECUs but overrides them with actual power consumption data, mediating between the vehicle's power needs and the power source output to prevent miscommunication errors
2Reliability
If the power source ECU increases fuel cell power generation in response to detected overconsumption events, then battery state of charge is maintained above minimum threshold, but the system requires continuous monitoring and dynamic adjustment capability
Solution Approach 1:
The system implements continuous feedback monitoring of actual power consumption and battery state of charge, with the power source ECU dynamically adjusting fuel cell output based on real-time conditions to maintain reliable power availability
Solution Approach 2:
The power source system monitors its own performance and automatically adjusts fuel cell power generation in response to detected overconsumption events, enabling self-correction without external intervention to maintain continuous power availability
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 solution effectively reduces the likelihood of power overconsumption and overdraw, maintaining the battery's state of charge above the minimum threshold, thus ensuring continuous power availability for the vehicle.
Implementation Method 1
a fuel cell stack configured to generate electricity
Implementation Method 2
a battery configured to store energy
Data Source
AI summary
A system for reducing overconsumption of power in a vehicle includes a power source including a battery having a state of charge (SOC), and a fuel cell stack that generates electricity. The system further includes an electronic control unit (ECU) coupled to the power source and designed to receive a power request corresponding to a requested amount of power from the power source. The ECU is further designed to determine a fuel cell power amount corresponding to an amount of the electricity generated by the fuel cell stack to achieve the requested amount of power. The ECU is further designed to determine an overconsumption event when a current power consumption corresponding to a total amount of power being drawn from the power source is greater than the power request. The ECU is further designed to increase the fuel cell power amount in response to determining the overconsumption event.