Pneumatic Cleaning Assembly for Battery Top Cover Press-Fitting
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Solution Overview
Problem
The press-fitting process of battery top covers into housings often results in aluminum chips falling into the battery housing, potentially causing micro or direct short circuits and safety hazards due to friction, which existing technologies fail to adequately address.
Innovation Solution
A press-fitting device equipped with a pneumatic cleaning assembly that uses positive or negative pressure to expel chips from the battery housing through a gap between the top cover and housing, ensuring cleanliness and safety by facilitating the removal of chips with controlled gas flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If press-fitting process is used to install battery top cover into battery housing, then the battery assembly is completed, but aluminum chips are produced that may fall into the battery housing and cause short circuit
Solution Approach 1:
The patent converts the harmful aluminum chips generated during press-fitting into a removable byproduct by introducing a cleaning assembly that uses gas flow to expel chips through the gap between the top cover and housing. The harmful friction that produces chips is acknowledged, but the chips are transformed from a dangerous contaminant into a manageable waste product that is actively removed via pneumatic or vacuum cleaning systems.
Solution Approach 2:
The cleaning assembly performs preliminary or concurrent cleaning action during the press-fitting process. By integrating the cleaning function (through pneumatic cleaning or vacuum suction) into the press-fitting operation, the system proactively prevents chip accumulation before it can cause short circuits, rather than addressing contamination after it occurs.
2Reliability
If aluminum chips are removed from battery housing, then safety is improved, but additional cleaning equipment and processes are required
Solution Approach 1:
The patent merges the cleaning function with the press-fitting device by integrating the cleaning assembly into the existing press-fitting structure. The cleaning assembly shares the same operational space and timing as the press-fitting process, combining two functions (assembly and cleaning) into a single integrated system rather than requiring separate standalone cleaning equipment.
Solution Approach 2:
The press-fitting device is designed with multi-functionality by incorporating both the press-fitting capability and the chip removal capability within a single device. The cleaning assembly can operate in conjunction with the press-fitting operation, allowing the device to perform both assembly and contamination removal functions, thereby reducing the need for additional separate equipment.
3Object-generated harmful factors
If gas flow is used to expel chips, then chip removal effectiveness is improved, but energy consumption increases
Solution Approach 1:
The patent employs pneumatic principles to remove chips by introducing gas flow through the gap between the top cover and housing. This pneumatic approach leverages the natural compressibility and flow characteristics of gas to create effective chip removal without requiring complex mechanical scraping or suction systems, thereby achieving efficient chip expulsion with moderate energy input.
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 pneumatic cleaning assembly effectively prevents chip accumulation, reducing the risk of short circuits and enhancing battery safety by maintaining a clean interior and ensuring reliable operation.
Implementation Method 1
The positive pressure assembly is arranged to introduce positive pressure gas into the battery housing
Implementation Method 2
The negative pressure assembly is arranged to introduce a negative pressure gas into the gap between the battery top cover and the battery housing
Data Source
AI summary
The present application relates to the technical field of battery and provides a device for press-fitting a battery top cover. The device for press-fitting a battery top cover comprises a press-fitting body. The press-fitting body 1 is arranged on one side of the battery top cover facing away from a battery housing. A pneumatic cleaning assembly is arranged on one side of the press-fitting body facing the battery top cover. The pneumatic cleaning assembly is arranged to allow the chips to move out of the battery housing together with gas along a gap between the battery housing and the battery top cover. In the present application, the pneumatic cleaning assembly is arranged to allow the chips to move out of the battery housing together with gas along the gap between the battery housing and the battery top cover under the action of the gas flow so that to keep the inside of the battery housing clean, avoid short circuit in the battery caused by the chips, and improve the safety performance of the battery.