Vehicle Power Mode Transition Control for Cooling Priority
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Solution Overview
Problem
Current management devices for partially electric vehicles do not effectively adjust the transition duration between different electrical power supply modes based on their priority levels, leading to inefficiencies in managing electrical needs and potentially compromising safety and component lifespan.
Innovation Solution
A management device equipped with a processor and memory that determines the next electrical power supply mode and its transition duration based on the priority levels of the current and next modes, allowing for dynamic adjustment of transition times to prioritize safety, component lifespan, cooling, and aerothermal comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a constant confirmation interval is used for transitioning between power supply modes, then the system can modify its choice should electrical needs change, but high-priority modes cannot be activated quickly enough
Solution Approach 1:
The confirmation interval is made dynamic by associating different duration values with different pairs of current and next power supply modes. When transitioning to a high-priority mode (such as safety mode), a shorter confirmation interval is applied, enabling faster activation. When transitioning between lower-priority modes, a longer confirmation interval is used, allowing the system to reconsider the transition decision. This dynamic adjustment resolves the contradiction by adapting the transition speed to the priority level of the target mode.
2Reliability
If a short transition period is used for high-priority modes, then safety and visibility are improved, but lower-priority modes cannot maintain their operational stability
Solution Approach 1:
Different confirmation interval durations are assigned to different transitions based on the priority levels of the involved power supply modes. High-priority mode transitions (e.g., to safety or visibility modes) receive shorter confirmation intervals to enable rapid response. Low-priority mode transitions receive longer confirmation intervals to maintain operational stability and allow reconsideration. This localized differentiation of transition characteristics resolves the contradiction between rapid safety response and general operational stability.
3Stability of the object's composition
If a long confirmation interval is used for mode transitions, then the system can reconsider transitions and maintain stability, but critical safety responses are delayed
Solution Approach 1:
The confirmation interval duration is dynamically adjusted based on the priority classification of the target power supply mode. The system evaluates the electrical needs and determines the priority level of the requested mode transition. For critical safety-related transitions, the confirmation interval is minimized to enable immediate response. For non-critical transitions, a longer interval is applied to maintain stability and allow system reconsideration. This dynamic adaptation resolves the contradiction between system stability and rapid response to critical needs.
Data Source
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AI summary
Management device (DG) for a vehicle (V) comprising a passenger compartment (H) associated with a heating and/or air conditioning installation (IC), and an at least partially electric drivetrain comprising electrical units (01, 02) associated with a first cooling system (SR1) and consuming electrical energy from a battery (BP) associated with a second cooling system (SR2), and a processor and a memory determining, on the basis of the electrical requirements of the first (SR1) and second (SR2) cooling systems and of the heating and/or air conditioning installation (IC), a next power supply mode to be established as a replacement for a current established power supply mode, and then a transition period to be imposed before establishing this determined next power supply mode, on the basis of priority levels associated with these current and next power supply modes.