Vehicle System Conditioning Control for Delayed Shutdown

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Solution Overview

Problem

Existing vehicle system conditioning methods often fail to align available conditioning time with the actual need, leading to inefficient energy usage, delayed shutdowns, and increased wear on components, as they rely on timer settings rather than real-time system requirements.

Innovation Solution

A computer system with processing circuitry that determines the need for conditioning in active or inactive modes, delays shutdown, and initiates conditioning only when necessary, allowing for flexible management of vehicle system operations, including rechargeable energy storage and fuel cell systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If timer-based conditioning is used after shutdown, then conditioning time is guaranteed, but shutdown is delayed and energy usage increases

Engineering Contradiction:
Improveconditioning qualityVSAvoidenergy usage
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent implements dynamic conditioning time determination based on real-time system state assessment. Instead of fixed timer-based conditioning, the system evaluates the actual conditioning need of vehicle systems (battery, fuel cell, etc.) and adjusts the conditioning duration dynamically. This allows the system to perform conditioning only when necessary and for the minimum required time, thereby avoiding unnecessary energy consumption while ensuring adequate conditioning when needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system incorporates feedback mechanisms that monitor the state of vehicle systems and determine whether conditioning is actually needed before initiating shutdown delays. The control unit receives information about system conditions (temperature, charge state, operational history) and uses this feedback to decide whether to delay shutdown for conditioning purposes. This feedback-driven approach prevents unnecessary conditioning operations and associated energy losses.

Inventive Principle:
Principle #23Feedback

2Reliability

If timer-based conditioning is used after shutdown, then conditioning time is guaranteed, but shutdown is delayed and component wear increases

Engineering Contradiction:
Improveconditioning qualityVSAvoidcomponent wear
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system dynamically adjusts shutdown timing based on real-time assessment of conditioning requirements. By evaluating system state parameters (temperature differentials, charge distribution, operational intensity), the system determines the minimum necessary conditioning time rather than applying fixed timer delays. This dynamic approach ensures adequate conditioning to prevent component wear while avoiding excessive delays that would unnecessarily stress the system during startup and shutdown transitions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control unit continuously monitors system parameters and uses this feedback to determine whether conditioning is actually required before delaying shutdown. The feedback mechanism assesses factors such as temperature uniformity, charge balance, and system stability to decide if additional conditioning time would benefit component longevity. This prevents unnecessary shutdown delays that would increase thermal and electrical stress on components without providing meaningful conditioning benefits.

Inventive Principle:
Principle #23Feedback

3Reliability

If intermittent awakening from shutdown is used, then conditioning can be performed, but additional wakeups are required and energy efficiency decreases

Engineering Contradiction:
Improveconditioning completionVSAvoidenergy efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary assessment of conditioning needs before initiating shutdown, determining in advance whether conditioning will be required. This preliminary action allows the system to plan the shutdown sequence optimally, combining conditioning operations with the natural shutdown process rather than requiring separate awakening events. By anticipating conditioning needs beforehand, the system can integrate conditioning into the shutdown phase itself, avoiding the need for additional wakeups and improving overall energy efficiency.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent enables continuous useful action by performing conditioning during the shutdown process itself rather than requiring separate awakening phases. The system maintains system power and operational state during conditioning operations, allowing conditioning to occur as a continuous process integrated with shutdown rather than as an interrupted sequence requiring multiple wake-sleep cycles. This continuity eliminates redundant energy consumption associated with repeated system activations.

Inventive Principle:
Principle #20Continuity of useful action

4Reliability

If unnecessary conditioning time is allocated, then all system needs are accommodated, but shutdown is delayed and productivity decreases

Engineering Contradiction:
Improvesystem readinessVSAvoidshutdown speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system implements dynamic determination of conditioning duration based on real-time system state assessment. Rather than allocating fixed, conservative conditioning time that ensures all possible needs are met, the system evaluates actual system parameters (temperature, charge state, operational history, environmental conditions) and adjusts conditioning time dynamically to match the specific needs of the situation. This allows rapid shutdown when conditions permit while extending conditioning time only when genuinely necessary for system readiness.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control unit monitors multiple system parameters and uses changes in these parameters to determine appropriate conditioning duration. By tracking parameters such as temperature differentials, charge distribution, and system stability metrics, the system can make real-time decisions about whether extended conditioning is needed. This parameter-driven approach replaces conservative time allocation with adaptive timing that responds to actual system conditions, improving shutdown speed when possible while maintaining system readiness when necessary.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20240416891A1Computer system and method for a vehicle
Publication Date: 2024.12.19 VOLVO TRUCK CORP
  • US20240416891A1 patent drawing
  • US20240416891A1 patent drawing
  • US20240416891A1 patent drawing

AI summary

A computer system is provided. Processing circuitry is configured to determine at least one vehicle system being in an active mode, said at least one vehicle system building up a need for conditioning when in the active mode and/or in an inactive mode, determine that no request for usage of the at least one vehicle system is present, thereby triggering a request for shut down of said at least one vehicle system, determine a need for conditioning of said at least one vehicle system, delay shut down of said at least one vehicle system, and initiate conditioning of said at least one vehicle system.