Battery Heat Management Integration System
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Solution Overview
Problem
Existing battery heat management systems for eco-friendly vehicles, such as chiller type systems, are inefficient in terms of space usage and energy consumption, as they require separate components for cooling and lack effective heating capabilities using battery heat.
Innovation Solution
A battery heat management integration system that utilizes the air conditioning system for cooling and heat exchange with cooling water and refrigerant, allowing for the use of battery heat for heating, thereby simplifying the cooling structure, reducing energy consumption, and enhancing heating performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate roof-on air conditioner is mounted independently on the roof for battery cooling, then the battery cooling function is achieved, but the space on the roof is substantially occupied and the package is disadvantageous
Solution Approach 1:
The patent combines the battery cooling function with the vehicle's existing air conditioning system by integrating a battery cooler into the AC system's refrigerant circulation path. The battery cooler is connected to the refrigerant line between the compressor and evaporator, allowing the same refrigerant to cool both the vehicle cabin and the battery pack simultaneously, thereby eliminating the need for a separate roof-mounted air conditioner and freeing up roof space.
Solution Approach 2:
The existing air conditioning system is made multi-functional by enabling it to serve both its original purpose (cabin cooling) and an additional function (battery cooling). The refrigerant circulation system is designed to route refrigerant through both the evaporator for cabin cooling and the battery cooler for battery thermal management, allowing one system to perform multiple functions and eliminate redundant components.
2Reliability
If a chiller type battery heat management system is used with independent water cooling device and roof-on air conditioner, then the battery cooling effect is enhanced, but the system complexity and energy consumption increase
Solution Approach 1:
The patent merges the water cooling device and the air conditioning system into a single integrated thermal management system. The battery cooler acts as a heat exchanger that interfaces with the refrigerant cycle, eliminating the need for separate chiller components and reducing system complexity while maintaining effective battery cooling.
Solution Approach 2:
The integrated system allows the air conditioning refrigerant cycle to serve dual purposes: cooling the vehicle cabin through the evaporator and cooling the battery pack through the battery cooler. This multi-functionality reduces the number of independent systems required and simplifies the overall architecture.
3Reliability
If a separate roof-on air conditioner is mounted for battery cooling, then the battery temperature can be controlled, but the heating function during colder temperatures is insufficient and energy consumption increases
Solution Approach 1:
The patent converts the waste heat generated by the battery during operation into a useful resource for heating the battery during cold temperatures. The battery cooler functions as a heat exchanger that can operate in reverse or utilize waste heat from the refrigerant compression process to provide thermal energy to the battery, transforming what would otherwise be wasted thermal energy into a beneficial heating source.
Solution Approach 2:
The battery cooler is designed as a multi-functional component that can provide both cooling and heating functions. During normal operation, it removes excess heat from the battery; during cold conditions, it可以利用 the heat from the refrigerant or waste battery heat to warm the battery, eliminating the need for separate heating components and reducing energy consumption.
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 simplifies the battery cooling structure, reduces energy consumption for cooling, and effectively uses battery heat for heating, improving overall battery temperature management and space efficiency.
Implementation Method 1
a battery cooler (30) for connecting a battery (10) in which battery cooling water is circulated and an air conditioning system (20) in which air conditioner refrigerant is circulated, thereby cooling the battery by the heat exchange effect
Implementation Method 2
thereby heating the battery by heat exchange effect between heating water and the battery
Data Source
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AI summary
A battery heat management integration system is provided. The system includes a battery cooler that connects a battery in which battery cooling water is circulated and an air conditioning system in which air conditioner refrigerant is circulated. A heat exchange effect thus occurs between the battery cooling water and the air conditioner refrigerant.