Battery Cell Pressing Assembly With Symmetric Pressure Sensing
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Solution Overview
Problem
Existing apparatuses for charging and discharging secondary batteries fail to precisely measure the difference in pressure applied to the left and right sides of the pressing plates, leading to uneven pressure distribution.
Innovation Solution
The apparatus incorporates a support housing module with symmetrical pressure sensor units on the first pressing assembly, allowing precise measurement of pressure applied to the battery cell by rotating moving screws to adjust the pressing assemblies and ensure uniform pressure distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single pressure sensor unit is provided at the center of the pressing plate, then the device complexity is reduced, but the measurement precision of pressure distribution is insufficient
Solution Approach 1:
The single pressure sensor unit is segmented into multiple pressure sensor units (first and second pressure sensor units) positioned at different locations on the pressing plate. This segmentation allows simultaneous measurement of pressure at multiple points, enabling detection of pressure differences between left and right sides while maintaining manageable system complexity through modular sensor arrangement.
Solution Approach 2:
The measurement capability transitions from a single-point (0D) or center-line (1D) measurement to a two-dimensional pressure distribution measurement by placing sensors at symmetric positions on both sides of the pressing plate. This dimensional expansion enables comprehensive monitoring of pressure uniformity across the pressing surface.
2Device complexity
If pressure sensor units are positioned only at the center of the pressing plate, then the device complexity is minimized, but the ability to detect pressure differences between left and right sides is lost
Solution Approach 1:
Pressure sensor units are strategically positioned at specific locations on the pressing plate - specifically at symmetric positions relative to the vertical centerline. The first pressure sensor unit is positioned at a first position and the second pressure sensor unit at a second position, allowing local pressure measurement at critical points where pressure differences are most likely to occur during battery cell pressing.
Data Source
AI summary
Proposed is an apparatus for charging and discharging a secondary battery, the apparatus including a support housing module that includes a first support frame, a second support frame and a second support frame, a screw support bracket provided between the first support frame and the second support frame that constitute one pair, a first moving screw, one end portion thereof being combined with the first support frame and the other portion thereof being combined with the screw support bracket, a second moving screw, one end portion thereof being combined with the second support frame and the other portion thereof being combined with the screw support bracket, a first pressing assembly being moved along a lengthwise direction of the first moving screw, and a second pressing assembly being moved along a lengthwise direction of the second moving screw, wherein pressure sensor units are provided on the first pressing assembly.