Battery Sealer Body with Shielded Circuit Module
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Solution Overview
Problem
Existing lithium-ion secondary batteries suffer from low energy density and capacity due to poor space utilization in polymer battery cells, which is exacerbated by the need for separate packaging and connection of battery components and integrated circuit chips, leading to increased volume and cost with limited miniaturization potential.
Innovation Solution
A secondary electrochemical battery with a sealing body featuring a negative electrode cap, circuit board module, and insulating washer, where the circuit board module is clamped between a loop line and the battery case, forming enclosed electromagnetic shielding spaces to prevent electromagnetic interference and facilitate heat dissipation without soldering, thereby optimizing space utilization and component integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate packaging and connection of battery components and integrated circuit chips are used, then reliability is improved, but device complexity and volume increase
Solution Approach 1:
The patent merges the battery components (electrode tabs, diaphragm) and integrated circuit chips into a single packaged unit. The circuit board with electronic components is integrated directly into the battery cell structure, eliminating the need for separate packaging and external connections. This reduces device complexity and volume while maintaining reliability through the unified design.
2Reliability
If battery cell top seal of predefined height is used to package positive electrode tab, then sealing reliability is improved, but space utilization deteriorates
Solution Approach 1:
The patent changes the height parameter of the battery cell top seal from a predefined fixed value to an optimized value that better utilizes the available space. By adjusting the seal height parameter, the design achieves both adequate sealing reliability and improved space utilization, allowing more components to be packaged within the battery cell volume.
3Reliability
If more peripheral components and manufacture processes are used for separate packaging, then sealing reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple sealing functions into a single integrated battery cell top seal structure. Instead of using separate sealing components for different parts of the battery cell, the design uses one unified seal that packages the electrode tabs, diaphragm, and circuit board together. This reduces the number of peripheral components and manufacturing processes, thereby lowering production costs while maintaining 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 solution enhances energy density and capacity by optimizing space utilization within the battery cell, reduces manufacturing complexity and costs, and effectively shields electromagnetic radiation and dissipates heat, improving the performance and miniaturization of lithium-ion secondary batteries.
Implementation Method 1
the circuit board module and the negative electrode cap constitute a first enclosed electromagnetic shielding space, the battery case and the circuit board module constitute a second enclosed electromagnetic shielding space
Implementation Method 2
the insulating washer has a ''-shaped section, and disposed within gaps of the battery case, the circuit board module and the negative electrode cap, so as to press and fix the circuit board module between the loop line and the battery case
Data Source
Figure 1a~1b
Figure 1c
Figure 1d
AI summary
Provided in the present invention is a secondary electrochemical battery sealer body having a packaged chip shielding structure, comprising: a negative electrode cap, a circuit board module, and an insulating washer. A recessed loop line structure is provided at an extremity of a battery housing in proximity to the negative electrode cap. The circuit board module is arranged between the loop line and the negative electrode cap. The circuit board module is configured with the diameter thereof being sized between the inner diameter of a recess constituted by the loop line and the inner diameter of the battery housing, thus being fitted at a side of the loop line. The circuit board module is connected to the negative electrode cap via an electrically-conductive material. The negative electrode cap and the circuit board module constitute a first sealed electromagnetic shielding space. The battery housing and the circuit board module constitute a second sealed electromagnetic shielding space. Electronic components are arranged within the first sealed electromagnetic shielding space and the second sealed electromagnetic shielding space. The insulating washer has an -shaped cross section and is arranged within a gap between the battery housing and the circuit board module and the negative electrode cap, thus pressingly fixing the circuit board module between the loop line and the battery housing, and separating the battery housing from the negative electrode cap.