Vehicle Heat Management Flow Switching for Air Bubble Bleeding
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Solution Overview
Problem
In existing heat management systems, flow passages uncoupled from a reserve tank tend to form air bubbles, leading to potential pump deterioration and overspeed rotation due to increased air volume in the heat medium.
Innovation Solution
A heat management system with a switching device and control device that couples and uncouples flow passages as needed, performing air bleeding when air bubbles exceed an allowable volume, ensuring appropriate heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flow passage is uncoupled from the reserve tank to enable flexible heat management, then adaptability is improved, but air bubbles form or remain in the heat medium leading to pump deterioration and overspeed rotation
Solution Approach 1:
The control device performs preliminary air bleeding by coupling the first flow passage to the second flow passage before the pump operates, removing air bubbles in advance to prevent pump deterioration and overspeed rotation
Solution Approach 2:
The control device monitors pump operation status and heat management conditions, dynamically switching between coupling and uncoupling the first flow passage to the second flow passage based on detected air bubble presence and system requirements
Data Source
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AI summary
A heat management system includes: a first flow passage in which a reserve tank is not provided; a second flow passage in which a reserve tank (162) is provided; a switching device (180A) configured to switch between coupling and uncoupling of the first flow passage and the second flow passage to and from each other; and a control device configured to control the switching device. The control device is configured to, when predetermined coupling conditions are met, make the heat medium flow through the first flow passage and the second flow passage that have been coupled to each other by the switching device. When the control device determines that air bubbles exceeding the allowable volume are present in the heat medium, the coupling conditions switch from being unmet to being met.