Multi-Block Battery Cell Sealing Apparatus
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Solution Overview
Problem
Existing battery cell sealing technologies are inefficient and require a large number of components, which complicates the sealing process and may lead to incomplete sealing due to the generation of gas during charging and discharging, necessitating a more effective and component-reduced solution.
Innovation Solution
A battery cell sealing apparatus comprising a first and second sealing block with moving and heating units, and a stopper unit, which pressurize and thermally fuse the case to form multiple sealing portions, reducing the number of components and improving operational efficiency by simultaneously forming sealing portions on the case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional sealing apparatus is used, then the sealing process can be completed, but the number of components is large and the structure is complex
Solution Approach 1:
The patent combines multiple sealing blocks into a single integrated sealing unit that can form multiple sealing portions simultaneously. The sealing unit includes a pressing portion with multiple pressing surfaces and a heating portion with multiple heating surfaces, eliminating the need for separate sealing blocks for each sealing location. This merging of components reduces device complexity while maintaining sealing reliability through simultaneous multi-point sealing.
2Reliability
If multiple sealing portions are formed sequentially, then complete sealing can be achieved, but the sealing process time increases
Solution Approach 1:
The patent enables continuous sealing action by designing the sealing unit to form multiple sealing portions simultaneously in a single pressing and heating operation. The pressing portion has multiple pressing surfaces that contact different locations of the case, and the heating portion has multiple heating surfaces that apply heat to corresponding areas, allowing all sealing portions to be created in one continuous action rather than sequentially, thereby improving productivity without compromising sealing completeness.
3Productivity
If gas is generated during charging and discharging, then the battery can function, but the sealing may become incomplete due to gas pressure
Solution Approach 1:
The patent applies local quality by providing multiple distributed sealing portions at different locations on the case rather than a single sealing point. The pressing portion includes multiple pressing surfaces positioned to create sealing portions at critical locations where gas pressure might compromise sealing. This distributed sealing approach ensures that even if gas generates pressure in one area, other sealing portions maintain sealing integrity, thus preserving both battery functionality and sealing reliability.
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 apparatus effectively seals battery cells by forming multiple sealing portions, reducing the number of components and enhancing operational efficiency, thereby preventing gas leakage and ensuring reliable sealing.
Implementation Method 1
A sealing apparatus may be used to thermally fuse the case
Implementation Method 2
a heating unit connected to the first sealing block and the second sealing block and supplying heat energy to the first sealing block and the second sealing block
Implementation Method 3
a first sealing block and a second sealing block pressurizing a case, provided with an accommodation space in which an electrode assembly is accommodated, to seal the case
Data Source
AI summary
A battery cell sealing apparatus includes: a first sealing block and a second sealing block pressurizing a case, provided with an accommodation space in which an electrode assembly is accommodated, to seal the case; a moving unit connected to at least one of the first sealing block and the second sealing block and moving at least one of the first sealing block and the second sealing block; and a heating unit connected to the first sealing block and the second sealing block and supplying heat energy to the first sealing block and the second sealing block. The first sealing block and the second sealing block may include a plurality of block members, and may pressurize the case with the plurality of block members to form a plurality of sealing portions on the case.