Battery Pack Cooling Cover Pressing Mechanism
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Solution Overview
Problem
Battery packs face the risk of short-circuits and potential fires when subjected to external impacts, as components can shift and the battery cell may become short-circuited with the cooling cover, leading to deformation and increased risk of sparks or fires.
Innovation Solution
A battery pack design featuring a stacked arrangement of modules with a cartridge and cooling cover configuration that includes a pressing and supporting portion to apply pressure and support the cooling cover of neighboring modules, preventing contact between the cell leads and cooling cover during impacts by bending the cooling cover, thus maintaining a safe distance and reducing the risk of short-circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If battery modules are stacked in a compact arrangement to increase energy density, then productivity and space utilization are improved, but the risk of short-circuits and fires increases when external impacts are applied due to component shifting
Solution Approach 1:
The cartridge includes pressing portions that pre-apply pressure to the cooling cover of adjacent battery modules, creating a cushioning effect that prevents the cooling cover from contacting cell leads during external impacts. This beforehand cushioning maintains reliable electrical insulation while preserving the compact stacked arrangement for high energy density.
2Strength
If the cooling cover is made rigid to maintain structural integrity, then strength is improved, but the risk of short-circuit increases during impacts as the rigid cover cannot deform to maintain safe distance from cell leads
Solution Approach 1:
The cooling cover transitions from a purely rigid structure to one with controlled flexibility, allowing it to deform under external impact forces. This parameter change enables the cooling cover to maintain safe distance from cell leads during impacts while preserving structural integrity under normal operating conditions.
3Reliability
If additional protective structures are added between battery modules to prevent short-circuits, then reliability is improved, but device complexity increases
Solution Approach 1:
The cartridge serves multiple functions: it houses the battery cell, provides structural support, and includes pressing portions that prevent short-circuits by maintaining pressure on the cooling cover. This multi-functionality achieves reliable short-circuit prevention without adding separate protective structures, thereby avoiding increased 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
The design effectively mitigates the risk of short-circuits and fires by ensuring that the cooling cover and cell leads remain separated during impacts, reducing the likelihood of overheating and maintaining the structural integrity of the battery pack.
Implementation Method 1
a pressing portion that is formed on the seating portion and that is configured to, based on an external force being applied to the seating portion, apply pressure to a first end of the second cooling cover
Implementation Method 2
The cooling cover may include: a heat conductive plate that faces the at least one battery cell
Data Source
AI summary
A battery pack includes a plurality of battery modules in a stacked arrangement. The plurality of battery modules includes a first battery module that includes: at least one battery cell including a cell lead; a cartridge on which the at least one battery cell is mounted; and a first cooling cover. The first cooling cover is coupled to the cartridge and covers the at least one battery cell. The cartridge includes: a seating portion on which the at least one battery cell is seated; and a pressing portion that is formed on the seating portion and that is configured to, based on an external force being applied to the seating portion, apply pressure to a first end of a second cooling cover of a second battery module that neighbors the first battery module in the stacked arrangement.