Heat management system of vehicle
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Solution Overview
Problem
Current heat management systems for electric vehicles often increase costs to enhance driving performance, compromising low-temperature fuel efficiency, and there is a need for a system that can efficiently manage heat while reducing costs.
Innovation Solution
A heat management system that connects the cooling circuit and battery cooling circuit through a 3-way valve to utilize waste heat from electric parts, integrating a chiller for temperature adjustment and incorporating a battery heater to optimize battery module performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat management system integrates multiple cooling circuits with valves to enhance heating efficiency at low temperature, then heating efficiency is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges the cooling circuit and battery cooling circuit into an integrated system where cooling water from the cooling circuit flows through the battery module to provide heating. This combination eliminates the need for separate heating systems and reduces overall system complexity while maintaining effective heating functionality.
Solution Approach 2:
The cooling water line serves multiple functions: it cools electric parts when needed and simultaneously heats the battery module when cooling water temperature is sufficient. This multi-functionality reduces the need for dedicated heating components and simplifies the overall system architecture.
2Reliability
If a heat management system uses separate closed circuits for cooling and battery heating, then cooling performance is maintained, but heat loss increases and heating efficiency decreases
Solution Approach 1:
The patent combines the cooling circuit and battery cooling circuit into an integrated system where cooling water flows sequentially through electric parts and then through the battery module. This merging allows heat transfer from cooling water to the battery, reducing heat loss while maintaining cooling performance through the preserved closed circuit structure.
3Ease of manufacture
If a heat management system integrates cooling circuits to reduce cost, then cost is reduced, but heating capability at low temperature deteriorates
Solution Approach 1:
The patent merges the cooling circuit and battery cooling circuit into an integrated system that provides both cooling and heating functions. This integration reduces the need for separate heating components, lowering manufacturing costs while maintaining effective heating capability through the thermal coupling of the battery module with the cooling water flow.
Solution Approach 2:
The cooling water line is designed to serve dual purposes: cooling electric parts and heating the battery module. This multi-functionality eliminates the need for dedicated heating systems, reducing overall system cost while ensuring adequate heating capability when cooling water temperature is sufficient.
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 enhances heating efficiency, increases the total driving distance, and reduces battery electricity consumption while minimizing heat loss, improving the vehicle's overall performance and efficiency.
Implementation Method 1
The chiller may be installed in the battery cooling water line between the second pump and the battery module and connected to a refrigerant line of an air-conditioning device through a refrigerant connection line to adjust a temperature of the cooling water through heat exchange between the cooling water supplied from the battery cooling water line and the refrigerant supplied from the air-conditioning device through the refrigerant connection line
Implementation Method 2
The cooling circuit may include a radiator, a first valve, a first pump, and at least one electric part which are connected through a cooling water line to cool the at least one electric part installed on the cooling water line through cooling water circulated in the cooling water line
Implementation Method 3
a battery heater to heat the cooling water in the battery cooling water line
Implementation Method 4
Under a low-temperature condition, a cooling circuit is integrated into an integrated closed circuit to transfer the waste heat of the electric part (e.g., an engine, an inverter, etc.) to a battery module
Data Source
AI summary
Provided is a heat management system of a vehicle including: a cooling circuit including a radiator, a first valve, a first pump, and at least one electric part which are connected through a cooling water line; a battery cooling circuit including a second pump and a battery module which are connected through a battery cooling water line; a chiller installed in the battery cooling water line between the second pump and the battery module, and connected to a refrigerant line of an air-conditioning device through a refrigerant connection line; a first cooling water connection line; and a second cooling water connection.