Battery Tray Thermal Paste Dosing for Tolerance Gaps
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Solution Overview
Problem
Existing methods for applying heat-conducting paste between a battery and its tray face challenges due to fabrication tolerances and irregularities, leading to inefficient heat conduction or excessive material usage, which is costly.
Innovation Solution
Scanning the tray bottom before applying heat-conducting paste to measure distances and adjust the quantity based on these measurements, ensuring accurate application to fill the gap between the battery and tray, using various bead geometries and volumes to accommodate irregularities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large quantity of heat-conducting paste is applied to ensure complete coverage, then heat conduction is improved, but material cost increases
Solution Approach 1:
The tray bottom is scanned before applying heat-conducting paste to measure the actual gap distribution. This preliminary measurement allows the paste application quantity to be precisely controlled based on actual needs rather than using excessive amounts, resolving the contradiction between ensuring complete coverage and minimizing material waste
Solution Approach 2:
The paste application process is made dynamic by adjusting the paste quantity based on real-time gap measurements. The system adapts the paste distribution to match the actual tray bottom irregularities, applying more paste where gaps are larger and less where gaps are smaller, thereby optimizing both heat conduction and material usage
2Manufacturing precision
If the tray bottom is made smooth to improve paste application, then manufacturing precision is improved, but fabrication complexity increases
Solution Approach 1:
Instead of requiring the tray bottom to be perfectly smooth through complex fabrication processes, the system uses a scanning device to automatically measure and compensate for irregularities. The tray bottom serves itself by providing its actual geometry information, which is then used to guide precise paste application, eliminating the need for expensive smoothing operations
Solution Approach 2:
The mechanical approach of making the tray bottom smooth through machining or polishing is replaced by a measurement and control system. The scanning device captures the actual geometry, and this information is used to control paste application, substituting complex mechanical fabrication with a more flexible measurement-based approach
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
Achieves precise application of heat-conducting paste, optimizing heat conduction while minimizing waste and cost by adapting to fabrication tolerances and irregularities.
Implementation Method 1
a measuring sensor is used to scan the tray bottom before the application of the heat-conducting paste and to measure, at least at several first measurement points, the distance between the tray bottom and a support plane
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.