Thermal Request Mediation for Battery and Cabin Cooling Conflicts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In vehicles with motor-driven batteries, the cooling of both the battery and passenger compartment can lead to a conflict where the heat discharged from the battery may compromise the comfort cooling of the passenger compartment, as the refrigeration circuit has a limited capacity to handle the combined heat discharge from both systems.
Innovation Solution
A thermal request mediating device that dynamically adjusts the allowable heat discharge between thermal circuits, prioritizing the battery cooling when the combined heat exceeds the refrigeration circuit's capacity by increasing the low-temperature cooling circuit's discharge and reducing the refrigerant circuit's, using a mediation unit that calculates and distributes heat based on threshold values or genetic algorithms to ensure compatibility between battery cooling and passenger compartment comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat discharged from the battery is transferred to the refrigeration circuit for cooling the battery, then battery cooling efficiency is improved, but passenger compartment cooling comfort deteriorates due to the limited heat discharge capacity of the refrigeration circuit
Solution Approach 1:
The patent implements dynamic adjustment of heat discharge allocation between battery cooling and passenger compartment cooling based on real-time thermal conditions. The mediation unit continuously monitors temperature parameters and dynamically redistributes the refrigeration circuit's heat discharge capacity, switching between battery-priority mode and comfort-priority mode to resolve the contradiction between battery cooling efficiency and passenger comfort
Solution Approach 2:
The system changes operational parameters by adjusting the allowable heat discharge amounts for different thermal circuits. When battery temperature exceeds thresholds, the system increases the heat discharge allocation to battery cooling while reducing it to passenger compartment cooling, and vice versa, thereby dynamically resolving the resource conflict through parameter optimization
2Adaptability or versatility
If the refrigeration circuit's heat discharge capacity is increased to handle both battery and passenger compartment cooling, then both cooling functions can be satisfied, but device complexity and cost increase due to larger compressor and condenser requirements
Solution Approach 1:
The patent makes the existing refrigeration circuit multi-functional by enabling it to serve both battery cooling and passenger compartment cooling purposes through dynamic heat discharge mediation. Instead of designing separate cooling systems or oversized components, the system allows the refrigeration circuit to flexibly allocate its capacity between two functions based on real-time needs, avoiding the complexity and cost of oversized hardware
Solution Approach 2:
The mediation unit automatically manages the heat discharge allocation between different thermal circuits based on pre-set temperature thresholds and thermal conditions. The system self-regulates the distribution of cooling capacity without requiring external intervention or complex control systems, thereby maintaining simplicity while ensuring both battery and passenger compartment cooling requirements are met
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 mediates the heat discharge between thermal circuits, ensuring both battery cooling and passenger compartment comfort, while optimizing the use of limited cooling capacity without the need for excessive compressor or condenser upgrades, thus maintaining comfort and efficiency.
Implementation Method 1
a refrigeration circuit configured to circulate a refrigerant while changing a state of the refrigerant and to exchange heat with the low-temperature cooling circuit
Implementation Method 2
a mediation unit configured to determine amounts of discharged heat allowable for the low-temperature cooling circuit and the refrigeration circuit such that a sum of the first requested amount of discharged heat and a second requested amount of discharged heat does not exceed a maximum amount of dischargeable heat of the refrigeration circuit
Data Source
AI summary
A thermal request mediating device (1) that is mounted in a vehicle including a first thermal circuit (LT) and a second thermal circuit (RE) configured to exchange heat with the first thermal circuit, the thermal request mediating device includes: a discharged heat amount acquiring unit configured to requested amounts of discharged heat of the first and second thermal circuits; and a mediation unit configured to determine amounts of discharged heat allowable for the first thermal circuit and the second thermal circuit, and increase the amount of discharged heat allowable for the first thermal circuit and decrease the amount of discharged heat allowable for the second thermal circuit as the first requested amount of discharged heat increases when the sum of the amounts of discharged heat of the first and second thermal circuits exceeds the maximum amount of dischargeable heat.