Battery Casing With Cell-Centering Lid for Heat Dissipation
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Solution Overview
Problem
Existing electric battery casings struggle with inefficient heat dissipation and cell placement, particularly in high-cell-count batteries like those used in electric motorcycles, where radial conduction is hindered by connections and manual cell alignment is cumbersome.
Innovation Solution
A casing design featuring a metal box with an upper securing part and circular housings that center and insulate cells, allowing parallel alignment and easy connection, combined with flexible centering parts and slots for secure cell placement, and optionally using heat-conducting glue for enhanced heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If radial conduction is used for heat dissipation, then heat transfer occurs through cell connections, but cooling efficiency deteriorates because connections hinder axial cooling
Solution Approach 1:
The invention divides the heat dissipation function into separate components: thermal pads placed between cells and a dedicated cooling plate, separating the heat transfer function from the electrical connection function. This segmentation allows heat to be efficiently transferred without interference from connection structures.
Solution Approach 2:
The invention introduces thermal pads as intermediary elements between the cells and the cooling plate. These pads facilitate heat transfer from the cell bodies to the cooling plate, enabling efficient thermal conduction without requiring direct contact between cells and cooling structures, thus avoiding interference from electrical connections.
2Ease of manufacture
If cells are secured by fixing their central area, then cell placement is achieved, but connection efficiency deteriorates because ends must be manually aligned
Solution Approach 1:
The invention incorporates preliminary centering features (centering protrusions and corresponding recesses) on the securing element that automatically align cells in the correct position during the securing process. This preliminary centering action eliminates the need for subsequent manual alignment, allowing connection operations to proceed directly and efficiently.
Solution Approach 2:
The securing element is designed to perform multiple functions automatically: it secures cells to the casing, centers them in the correct position, and maintains proper spacing. This self-service capability eliminates the need for separate manual alignment operations, significantly improving connection efficiency.
3Device complexity
If cells are secured without dedicated centering features, then securing is simple, but manufacturing precision deteriorates because parallel alignment is difficult
Solution Approach 1:
The invention merges the securing function and the centering function into a single integrated securing element. This element includes both securing features (to attach cells to the casing) and centering features (protrusions and recesses that ensure parallel alignment). This merging achieves high manufacturing precision without significantly increasing device complexity.
Solution Approach 2:
The securing element is designed as a multi-functional component that simultaneously performs securing, centering, and spacing functions. This universal component replaces what would otherwise require multiple separate elements, achieving precise parallel alignment while maintaining relatively simple device complexity.
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
Facilitates efficient heat transfer and secure cell alignment, improving cooling and connection efficiency while ensuring proper insulation and fixation, thus enhancing the performance of high-cell-count batteries.
Implementation Method 1
Currently, the dissipation of the heat generated by the cells is carried out by radial conduction as on the upper and lower faces of the cells
Implementation Method 2
improve the heat transfer from the cell outwards
Data Source
AI summary
A casing for electric battery that, applicable to an electric battery (2) to house inside a plurality of identical electrochemical cells (3) and including a metal container-shaped box (10), formed by a lower base (101) and a perimetric wall (102), where the cells (3) are incorporated, that in addition includes an upper fixing part (11) that acts as a lid to the box (10) fitted on its perimetric wall (102) and on the cells (3) centering them and leaving the contacts or lugs apparent for the electric connection. An upper fixing part (11) can include housings (7) with holes that, distributed through the full extent of the part, have a number, shape and size adapted to receive an upper portion of each of the cells (3) so that they surround each cell (3) leaving apparent and insulated from one another their positive and negative contacts.