Battery Tray Gap Measurement for Precise Thermal Paste Filling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for applying heat-conducting paste between a battery and its tray for efficient cooling are inefficient due to insufficient or excessive paste application, exacerbated by fabrication tolerances and irregularities in the tray and battery surfaces.
Innovation Solution
Scanning the tray bottom to measure distances to a support plane defined by battery support points, allowing for precise determination of the gap width between the battery and tray, and applying heat-conducting paste accordingly to ensure complete filling without excess.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large quantity of heat-conducting paste is applied to ensure complete filling of the gap, then heat conduction efficiency is improved, but material cost and waste increase
Solution Approach 1:
The gap height is measured before applying the heat-conducting paste, allowing the paste quantity to be pre-calculated and precisely controlled based on the actual gap dimensions, thus avoiding both insufficient and excessive application
Solution Approach 2:
The measurement of the gap height provides feedback information that is used to control the paste application process, enabling adaptive dosing that matches the actual gap requirements rather than using a fixed or estimated quantity
2Loss of substance
If the quantity of heat-conducting paste is reduced to minimize waste, then material cost decreases, but heat conduction efficiency deteriorates
Solution Approach 1:
The gap height is measured in advance to determine the exact paste quantity needed, ensuring that sufficient paste is applied to completely fill the gap and achieve optimal heat conduction while avoiding material waste
Solution Approach 2:
The measured gap height serves as feedback to control the paste application quantity, ensuring that the minimum necessary amount is applied to achieve complete gap filling and optimal thermal contact
3Reliability
If more heat-conducting paste is applied to account for surface irregularities, then complete wetting of the battery bottom is guaranteed, but excess material must be displaced during battery insertion
Solution Approach 1:
The gap height is measured before paste application, allowing the paste quantity to be precisely controlled to match the actual gap volume, thus avoiding both insufficient wetting and excessive paste that would interfere with battery insertion
Solution Approach 2:
The paste application is optimized locally based on the measured gap height at different positions, ensuring complete wetting where needed while avoiding excess paste in areas where the gap is smaller
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 method enables accurate dosing and application of heat-conducting paste, improving heat conduction efficiency while minimizing waste and cost, even with irregular surfaces due to fabrication tolerances.
Implementation Method 1
scanning the tray bottom before the application of the heat-conducting paste and measuring, at least at several first measurement points, the distance between the tray bottom and a support plane spanned by support points at which the battery bears on the battery tray
Implementation Method 2
an empty space between the battery and the battery tray is filled with a heat-conducting paste that conducts heat very well and that removes the heat generated in the battery to the tray
Data Source
AI summary
A method produces a battery arrangement which has a battery tray having a tray bottom and a battery received in the battery tray, wherein the battery lies on the battery tray at support points spanning a support plane and wherein, before the battery is inserted into the battery tray, a thermal compound is applied to the tray bottom and/or to the battery bottom in order to fill, at least in part, a gap between a battery bottom facing the tray bottom and the tray bottom. Before the thermal compound is applied, a distance between the tray bottom and the support plane is determined at least at first measurement points and the thermal compound is applied to the tray bottom and/or the battery bottom in a quantity which is dependent on the determined distances between the tray bottom and the support plane.