Conductive Battery Holding Unit With Openings For Heat Radiation
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Solution Overview
Problem
Existing battery modules face challenges in efficiently reducing weight and cost while maintaining effective heat radiation, especially as cell performance improves and heat generation increases during high-power applications.
Innovation Solution
A battery block design featuring a holding unit with openings along the entire side surfaces of cells, made of conductive material, where the exposed area of the first region is smaller than the second region, combined with a side wall portion for improved thermal coupling and a staggered cell arrangement for minimized clearance, allowing for efficient heat radiation and reduced weight and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a resin-made battery holder with notches is used to maintain heat conduction, then heat radiation is suppressed, but weight and cost increase
Solution Approach 1:
The invention extracts the heat conduction function from the resin-made battery holder and transfers it to a dedicated aluminum holding unit. The resin holder's notches are removed entirely, and heat conduction is achieved through the aluminum holding unit's thermal conductivity and its contact with the cell surfaces, separating the structural support function (resin) from the heat conduction function (aluminum).
Solution Approach 2:
The aluminum holding unit acts as an intermediary between the resin battery holder and the cells. It provides the heat conduction function that the resin material cannot achieve efficiently, while the resin holder provides the structural support and positioning. This intermediary component enables effective heat radiation without requiring the resin holder to have complex notch structures.
2Power
If cell performance is improved to increase power output, then heat generation increases, but heat radiation efficiency decreases
Solution Approach 1:
The invention changes the material parameter of the holding unit from resin (low thermal conductivity) to aluminum (high thermal conductivity). This parameter change enables efficient heat conduction from the cells to the holder, allowing high-power cells to operate at higher temperatures without compromising heat radiation efficiency. The aluminum material's inherent thermal conductivity parameter directly addresses the increased heat generation from high-performance cells.
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 design achieves more efficient heat radiation, reduces weight and cost, and ensures stable cell holding, thereby preventing cell degradation and enhancing overall performance.
Implementation Method 1
a holding unit that holds the plurality of cells and is made of a material having a heat conductivity
Data Source
AI summary
A battery block includes a holding unit that holds a plurality of cells. The holding unit is made of a material having a heat conductivity. The holding unit includes openings that are open over the entire length of the side surfaces of the cells in the longitudinal direction. Each opening is formed so that, on the side surface of each cell, the area of a first region exposed to the outside through the opening is smaller than that of a second region other than the first region.