Multi-Layer Coolant Valve Layout for Compact Battery Thermal Control
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Solution Overview
Problem
Electric vehicles require efficient temperature control of battery packs using coolant valves to maintain optimal operating temperatures, as batteries' charge/discharge capacity is sensitive to extreme temperatures.
Innovation Solution
A fluid valve with multiple flow paths formed by collinear communication holes and separation surfaces, divided into upper and lower layers by vertical partitions, reducing overlap and enhancing fluid distribution and reducing valve height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple flow paths are formed in a conventional single-layer valve structure, then the valve can control fluid flow in different directions, but the valve height increases and the structure becomes complex
Solution Approach 1:
The patent transitions from a conventional single-layer horizontal flow path structure to a multi-layer vertical structure by forming communication holes that extend through the height direction of the valve body. This dimensional change allows multiple flow paths to be arranged in both horizontal and vertical directions, enabling complex flow control functionality while reducing the overall valve height compared to purely horizontal multi-path designs.
Solution Approach 2:
The patent implements a nested structure where multiple flow paths are arranged in upper and lower layers within the same valve body footprint. The communication holes are selectively connected to form flow paths that are nested in the vertical dimension, allowing multiple independent flow paths to coexist without increasing the valve's planar area significantly, thus reducing overall valve height.
2Adaptability or versatility
If multiple flow paths are formed in a single valve body, then flow control functionality is enhanced, but heat transfer between paths increases
Solution Approach 1:
The patent divides the internal valve space into distinct upper and lower layers using separation surfaces. These separation surfaces act as thermal barriers that segment the flow paths vertically, reducing heat transfer between adjacent flow paths while still allowing the valve to control multiple flow paths within a single compact body.
3Adaptability or versatility
If communication holes are formed collinearly in the height direction, then multiple flow paths can be formed selectively, but manufacturing precision requirements increase
Solution Approach 1:
The patent designs the communication holes to serve multiple functions: they can be selectively connected to form different flow path configurations (upper flow paths, lower flow paths, or both) depending on operational requirements. This universal design allows a single set of collinearly arranged communication holes to enable multiple flow control modes, reducing the need for additional separate components and simplifying the overall manufacturing process despite the precision requirements.
Data Source
AI summary
A fluid valve according to the present disclosure may include a main body having a plurality of communication holes formed collinearly in an outer surface thereof in a height direction, and a cover covering each of upper and lower portions of the main body, wherein the plurality of communication holes may be selectively connected to form a plurality of flow paths inside the main body, and the plurality of flow paths may be separated by a separation surface.