Vacuum Cleaner Battery Assembly With Partitioned Cell Cooling
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Solution Overview
Problem
Vacuum cleaners with cord reel assemblies are limited in movement range due to the length of the power cord, and battery-powered vacuum cleaners face heat emission issues that can reduce battery lifespan.
Innovation Solution
A battery assembly with partition walls and heat radiation holes, and a charging stand that allows for efficient heat dissipation and charging, enabling improved mobility and extended battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cord reel assembly is used to supply power to the vacuum cleaner, then the vacuum cleaner can receive power through the cord, but the movement range is limited by the cord length
Solution Approach 1:
The invention extracts the power supply function from the cord reel assembly and separates it into an independent battery assembly. The battery assembly can be removed from the vacuum cleaner body and charged separately, eliminating the constraint of cord length while maintaining power supply capability. This allows the vacuum cleaner to move freely without being restricted by cord length or requiring a cord reel mechanism.
2Volume of moving object
If battery cells are closely arranged to maximize space utilization, then the vacuum cleaner size is reduced, but heat emission becomes problematic and reduces battery lifespan
Solution Approach 1:
The invention segments the battery assembly into multiple independent battery cells arranged in series. Each battery cell is separated from others by insulating walls, which prevents thermal coupling between cells. This segmentation allows for compact arrangement while ensuring that heat generated by one cell does not directly affect adjacent cells, thereby maintaining battery lifespan and reliability.
Solution Approach 2:
The invention introduces insulating walls as intermediary elements between battery cells. These walls serve as thermal barriers that prevent direct heat transfer between adjacent battery cells. The insulating walls allow the battery cells to be closely arranged for compact size while simultaneously blocking the harmful thermal interaction that would reduce battery lifespan.
3Use of energy by moving object
If partition walls are placed close together to accommodate more battery cells, then energy density increases, but heat dissipation becomes insufficient
Solution Approach 1:
The invention applies different properties to different parts of the battery assembly. The partition walls have dual functionality: they are positioned closely to maximize energy density, but they incorporate insulating materials or thermal management features at specific locations to enable effective heat dissipation. This local differentiation allows simultaneous optimization of both energy density and thermal management.
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
Enhances the mobility of vacuum cleaners by eliminating cord length restrictions and prolongs battery lifespan through effective heat management.
Implementation Method 1
a plurality of battery cells (141, 142)
Implementation Method 2
a plurality of first heat radiation holes (159) which discharge heat of each of the cell chambers (151a), and one or more second heat radiation holes (159a) which discharge heat of the first air chamber (152)
Implementation Method 3
a part or all of the plurality of partition walls (151) are spaced apart from each other
Data Source
Figure 1
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Figure 3
AI summary
Provided is a battery assembly (120) for a vacuum cleaner including a plurality of battery cells (141, 142); and a battery cover (150) configured to support the plurality of battery cells, wherein the battery cover includes a plurality of partition walls (151b, 151d) wherein each partition wall forms a cell chamber (151a) arranged to accommodate a battery cell (141, 142) and a part or all of the plurality of partition walls are spaced apart from each other thus defining a heat radiating path. The heat emission performance of the battery assembly is thus enhanced and the battery assembly lifespan is prolongated. A vacuum cleaner comprising the battery assembly is also provided.