Vehicle Temperature Controller Merging Heat Circuits
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Solution Overview
Problem
In vehicle-mounted temperature controllers, the refrigeration circuit requires high energy to warm up internal combustion engines, and heat generating devices like motors and batteries face excessive temperature rises, leading to performance degradation.
Innovation Solution
A vehicle-mounted temperature controller with separate heat circuits for heat generating devices and internal combustion engines, featuring a refrigeration circuit that optimizes energy use by controlling the circulation mode and heat exchange ratios to reduce energy consumption and prevent excessive temperature rises.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the refrigeration circuit operates at high load to warm up the internal combustion engine, then the engine warming efficiency is improved, but the energy consumption of the refrigeration circuit increases
Solution Approach 1:
The patent merges the cooling function for heat generating devices with the engine warming function by having the cooling water from heat generating devices flow into the engine cooling water flow path, combining two thermal management functions into one integrated system
Solution Approach 2:
The patent converts the waste heat generated by heat generating devices (motor, battery, PCU) into a useful resource for warming up the internal combustion engine, transforming a potential harmful effect (excessive temperature rise) into a beneficial effect (engine warming)
2Speed
If the cooling water flow rate to the internal combustion engine is increased, then the engine warming speed is improved, but the temperature control precision of heat generating devices deteriorates
Solution Approach 1:
The patent implements dynamic flow rate control using circulation control devices that adjust the cooling water flow rate based on real-time temperature conditions of both the heat generating devices and the internal combustion engine, allowing the system to optimize performance under varying operating conditions
Solution Approach 2:
The patent incorporates temperature detection devices that continuously monitor the temperatures of heat generating devices and engine cooling water, using this feedback information to dynamically adjust the circulation control devices and maintain optimal temperature control
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
Simultaneously reduces the energy needed for refrigeration circuit operation during engine warming and prevents excessive temperature rises in heat generating devices, enhancing efficiency and performance.
Implementation Method 1
the first heat exchanger making a refrigerant absorb heat from the first heat medium to make the refrigerant evaporate
Implementation Method 2
the second heat exchanger making the refrigerant discharge heat to the second heat medium to make the refrigerant condense
Implementation Method 3
a heat exchanger for a heat generating device, exchanging heat with the heat generating device
Data Source
AI summary
A vehicle-mounted temperature controller includes a first heat circuit having a heat exchanger for a heat generating device and a first heat exchanger; a second heat circuit having a heat medium flow path of an engine and a second heat exchanger; and a refrigeration circuit having the first heat exchanger to make the refrigerant evaporate and the second heat exchanger to make the refrigerant condense. A circulation mode control device control a circulation mode so that the second heat medium raised in temperature by absorbing heat from the refrigerant at the second heat exchanger flows into the flow path, when the engine is stopped and heat is discharged from the heat generating device to the first heat medium in the heat exchanger for the heat generating device and heat is absorbed from the first heat medium to the refrigerant in the first heat exchanger.