Battery Thermal Loop Switching for Independent Cooling Control
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Solution Overview
Problem
Existing thermal management systems in electrified vehicles fail to effectively adjust the temperature of the battery due to excessive self-heating caused by heat medium flowing through the drive device, leading to inefficient temperature regulation.
Innovation Solution
A thermal management system with multiple flow paths and a switching device to disconnect and connect specific circuits, allowing for independent heating and cooling of the heat medium and battery, utilizing a radiator and chiller to manage temperature adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If multiple flow paths are used for independent temperature control, then temperature regulation becomes more effective, but the system complexity increases
Solution Approach 1:
The system merges multiple flow paths (first, second, third, and fourth) into a single integrated thermal management system controlled by one switching device. This consolidation allows independent temperature control of the battery and drive device while avoiding the complexity of completely separate control systems, resolving the contradiction between control effectiveness and system complexity.
Solution Approach 2:
The switching device dynamically reconfigures the flow path connections based on real-time temperature conditions. This dynamic adaptability allows the system to achieve effective temperature control for different components without requiring permanently complex routing, as the complexity is only activated when needed for specific thermal management scenarios.
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
The system effectively regulates the temperature of the battery by heating or cooling the heat medium, preventing excessive temperature rise and ensuring efficient temperature control.
Implementation Method 1
a power storage device that performs heat exchange with the heat medium in the first flow path
Implementation Method 2
a drive device that performs heat exchange with the heat medium in the second flow path and that is able to generate driving force
Implementation Method 3
a radiator provided in the third flow path
Implementation Method 4
a chiller device provided in the fourth flow path
Data Source
AI summary
The thermal management system includes a power storage device in a first flow path, a drive device in a second flow path, a radiator in a third flow path, a chiller device in a fourth flow path, a switching device, and a control device. In the thermal management system, the switching device is controlled so that the first connecting flow path to which the first flow path and the fourth flow path are connected, the drive device, and the radiator are separated from each other and become independent.