Vehicle Heat Medium Circuit Switching for Dual Temperature Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing vehicle heat management systems face challenges in adjusting temperatures for simultaneous indoor air conditioning and battery warming without incurring excessive heat loss, as they require different temperature ranges for these operations.
Innovation Solution
A vehicle heat management system with a refrigerant circuit and a heat medium circuit that includes multiple heat exchangers and switch devices, allowing for selective routing of the heat medium to adjust temperature ranges and operate in various modes efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the heat releasing device circuit and the element circuit are connected in series to form a single circuit, then the system can adjust temperature by mixing hot water and cold water, but it cannot provide heat mediums with different temperature ranges simultaneously, increasing heat loss
Solution Approach 1:
The heat medium circuit is divided into multiple independent circuits (first heat medium circuit and second heat medium circuit) that can operate separately. Each circuit can be controlled independently by switch devices, allowing simultaneous provision of heat mediums with different temperature ranges without requiring heat release for temperature adjustment, thereby reducing heat loss while maintaining adaptability.
2Adaptability or versatility
If individual heat medium circuits are used for air conditioning and battery warming, then different temperature ranges can be provided, but the system complexity increases with multiple circuits
Solution Approach 1:
The multiple heat medium circuits are designed with common components such as the refrigerant circuit, heat exchangers, and control units that serve multiple functions. The switch devices enable flexible routing and configuration of the circuits to meet different operational requirements (air conditioning, battery warming, or combined operation), reducing overall system complexity while maintaining the capability to provide different temperature ranges simultaneously.
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 system effectively adjusts temperature ranges for both indoor air conditioning and battery warming while minimizing heat loss, enabling various operation modes by strategically switching between different heat medium circuits.
Implementation Method 1
a refrigerant-heat medium heat exchanger; heat medium having been subjected to a heat exchange with the refrigerant in the refrigerant-heat medium heat exchanger
Implementation Method 2
a refrigerant circuit configured to compress, condense, expand and evaporate refrigerant
Implementation Method 3
one of the selected heat exchangers functions as a condenser
Implementation Method 4
the other functions as an evaporator
Data Source
AI summary
A vehicle heat management system includes a refrigerant circuit including a refrigerant-heat medium heat exchanger, and a heat medium circuit. Two or more of at least three heat exchangers are selected, and one of them functions as a condenser, and the other functions as an evaporator. The refrigerant-heat medium heat exchanger includes a first and a second refrigerant-heat medium heat exchanger. The heat medium circuit includes a switch device configured to be able to switch between a circuit state in which the heat medium having passed through the second refrigerant-heat medium heat exchanger flows to the first refrigerant-heat medium heat exchanger and a circuit state in which a flow path of the heat medium having passed through the first refrigerant-heat medium heat exchanger and a flow path of the heat medium having passed through the second refrigerant-heat medium heat exchanger form individual circuits, respectively.