Battery Coolant Composition With Ion Adsorbents for Low Conductivity
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Solution Overview
Problem
Conventional heat transfer media in thermal management systems for vehicles experience increased electrical conductivity due to ion generation and release, leading to potential short circuits and inefficiencies.
Innovation Solution
A heat transfer medium comprising a liquid base material, orthosilicic acid ester, and dispersed ion adsorbent particles, which adsorb anions and cations to maintain low electrical conductivity over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional heat transfer media are used in thermal management systems, then heat transfer function is achieved, but electrical conductivity increases over time due to ion generation and release
Solution Approach 1:
The patent extracts and removes ions from the heat transfer medium by introducing ion adsorbent particles. These particles selectively adsorb cations and anions that are generated and released during system operation, effectively removing the harmful ionic components while maintaining the heat transfer fluid's other beneficial properties.
Solution Approach 2:
The ion adsorbent particles serve as an intermediary substance between the heat transfer medium and the system components. These particles mediate the interaction by capturing ions before they can cause harmful effects, thus protecting the system while allowing the heat transfer medium to continue its primary function.
2Productivity
If heat transfer medium circulates through the system, then heat transfer efficiency is maintained, but ions are released from system components into the medium
Solution Approach 1:
The patent converts the harmful effect of ion release into a beneficial process by using the circulating heat transfer medium to carry ions to ion adsorbent particles. The continuous circulation that initially causes ion distribution problems now enables continuous ion capture, transforming a harmful circulating effect into a beneficial self-cleaning mechanism.
Solution Approach 2:
The heat transfer medium serves a dual function: it transfers heat as intended and simultaneously transports ions to ion adsorbent particles for removal. The system uses its own circulating flow to deliver the harmful ions to the adsorbent particles, enabling self-service ion removal without additional pumping or processing systems.
3Reliability
If ion adsorbent particles are added to the heat transfer medium, then electrical conductivity is reduced, but device complexity increases
Solution Approach 1:
The ion adsorbent particles utilize porous structures with high surface area to volume ratios, enabling effective ion adsorption capacity while maintaining small particle sizes. This porous architecture allows the particles to be dispersed throughout the heat transfer medium without causing significant viscosity increases or flow resistance, thereby limiting complexity additions.
Solution Approach 2:
The patent modifies the chemical parameters of the heat transfer medium by introducing substances with specific ion-adsorbing properties. By carefully selecting adsorbent materials and controlling their concentration within optimal ranges, the system achieves effective ion removal while maintaining the medium's thermal properties and avoiding excessive complexity in composition management.
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
The solution effectively reduces the electrical conductivity of the heat transfer medium, preventing short circuits and maintaining efficiency by adsorbing ions released from the system components.
Implementation Method 1
The ion adsorbent is formed of a plurality of solid particles and adsorbs at least one of anions and cations present in the heat transfer medium
Data Source
AI summary
A heat transfer medium for transferring heat from a vehicle driving battery that generates heat during charging and discharging includes a liquid base material, an orthosilicic acid ester compatible with the base material, and an ion adsorbent dispersed in the base material. The ion adsorbent is formed of a plurality of solid particles and adsorbs at least one of anions and cations present in the heat transfer medium.