Vehicle Battery Cooling Device With Separate Air Passages
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Solution Overview
Problem
Conventional air-cooling-type battery cooling devices for vehicles recirculate heated air back into the vehicle room, leading to reduced cooling efficiency and decreased air conditioning performance, causing discomfort to occupants, especially in hybrid and electric vehicles.
Innovation Solution
A vehicle battery cooling device with separate air passages for cooling the battery and the vehicle room, allowing for independent cooling and air circulation modes, using a heat exchanger to cool outside air introduced into the vehicle, and a flow rate adjusting mechanism based on battery temperature to optimize cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the exhaust air after cooling the battery is circulated back into the vehicle room, then the cooling system reuses air for continuous cooling, but the temperature in the vehicle room rises locally and air conditioning performance deteriorates
Solution Approach 1:
The patent divides the air conditioning system into separate circulation paths: one for the vehicle room and another for the battery cooling. The first air conditioning passage supplies cooled air to the vehicle room while the second air conditioning passage supplies cooled air to the battery accommodation part, preventing mixed circulation and local temperature rise in the vehicle room.
Solution Approach 2:
The patent extracts the battery cooling air circulation from the vehicle room air conditioning system. By providing dedicated first and second discharge passages that discharge air to different locations, the system removes the harmful recirculation of heated air back into the vehicle room, maintaining air conditioning performance while preserving cooling efficiency.
2Device complexity
If a single air passage is used for both vehicle room cooling and battery cooling, then the system structure is simplified, but the air cooling efficiency for both purposes deteriorates
Solution Approach 1:
The patent segments the air conditioning system into multiple independent passages: a first air conditioning passage for vehicle room cooling and a second air conditioning passage for battery cooling. This segmentation allows each passage to optimize its cooling function without interfering with the other, maintaining high air cooling efficiency for both purposes while managing system complexity through modular design.
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 configuration efficiently cools the battery and vehicle room independently, preventing heated exhaust air from recirculating into the vehicle room, thus maintaining air conditioning performance and occupant comfort.
Implementation Method 1
a heat exchanger 5 which cools air introduced into the outside air introduction passage 4
Data Source
AI summary
The disclosure provides a vehicle battery cooling device including, in a vehicle equipped with a battery for driving, a battery accommodation part, an outside air introduction passage introducing air outside the vehicle, a heat exchanger cooling air introduced into the outside air introduction passage, a first air conditioning passage, a second air conditioning passage, a first discharge passage, and a second discharge passage. The first air conditioning passage is communicated to the heat exchanger and the vehicle room to supply air cooled by the heat exchanger to the vehicle room. The second air conditioning passage is communicated to the heat exchanger and the battery accommodation part to supply air cooled by the heat exchanger to the battery accommodation part. The first discharge passage discharges air in the vehicle room to outside the vehicle. The second discharge passage discharges air in the battery accommodation part to outside the vehicle.