Battery Pressing Mechanism With Adjustable Probe Alignment
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Solution Overview
Problem
Existing pressing mechanisms for lithium-ion batteries fail to account for deviations in battery thickness due to swelling, leading to inconsistent charging and discharging, affecting the uniformity and quality of the process.
Innovation Solution
A pressing mechanism with variable distance positioning and equal dividing, utilizing a probe assembly with adjustable probes and a cam system to align probes with battery tabs, compensating for thickness deviations caused by battery swelling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pressing mechanism uses direct lifting and pressing without position adjustment, then the device complexity is reduced, but the manufacturing precision of battery charging deteriorates due to accumulated size deviations
Solution Approach 1:
The probe assembly is designed with movable capability along the vertical direction, transforming from a fixed static structure to a dynamic adjustable one. The probe can move up and down to adapt to different battery thicknesses, ensuring consistent contact pressure and charging uniformity across batteries with varying dimensions.
Solution Approach 2:
The pressing mechanism changes the position parameter of the probe vertically to compensate for battery thickness variations. By adjusting the probe's vertical position, the system adapts to different battery sizes and swelling states, maintaining precise contact and consistent charging parameters throughout the battery queue.
2Device complexity
If the probe queue is directly opposite to the lithium battery queue without adjustment, then the device complexity is minimized, but the reliability of charging deteriorates due to probe deviation from battery tabs
Solution Approach 1:
The probe assembly can move dynamically in the vertical direction to maintain proper alignment with battery tabs despite variations in battery thickness and swelling. This dynamic adjustment ensures reliable electrical contact throughout the charging process.
Solution Approach 2:
The system performs preliminary position adjustment of the probe assembly before charging begins, anticipating thickness variations in the battery queue. This preliminary positioning ensures that probes are correctly aligned with tabs before contact is made, preventing charging failures.
3Ease of manufacture
If the pressing mechanism cannot calibrate position deviations, then the ease of manufacture is improved, but the uniformity of lithium-ion battery quality deteriorates due to accumulated size deviations
Solution Approach 1:
The probe assembly incorporates vertical movement capability, allowing it to adapt to thickness variations in individual batteries. This dynamic adjustment compensates for manufacturing tolerances and swelling differences, ensuring uniform charging quality across all batteries without requiring extremely precise initial manufacturing tolerances.
Solution Approach 2:
The system adjusts the vertical position parameter of probes to compensate for variations in battery dimensions. This parameter adjustment allows the pressing mechanism to maintain consistent contact and charging conditions across batteries with different thicknesses, improving overall quality uniformity.
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
Improves the uniformity and reliability of charging and discharging by aligning probes with battery tabs, reducing accumulated deviations and ensuring consistent contact.
Implementation Method 1
A cam and reset unit are arranged at the rear part of each restraining tray holder
Implementation Method 2
the cam and reset unit are used to adjust the position of the probe assembly in the vertical direction
Implementation Method 3
a lifting driving cylinder and a plurality of restraining trays, wherein the lifting saddle horizontally arranged between the top frame and the bottom frame
Implementation Method 4
a compression spring arranged between the driving block and the fixed block
Implementation Method 5
the compression spring arranged between the driving block and the fixed block
Data Source
AI summary
A pressing mechanism with variable distance position and equal dividing for charging and discharging of the square battery comprises a frame; a pressing mechanism between top and bottom portions of the frame, comprising a lifting saddle, a lifting driving cylinder and restraining trays; a cam at the rear terminal of the restraining tray holder; a probe assembly at the bottom of the top frame, comprising probe modules having a probe module frame, a linear sliding rail holder, a linear sliding rail, a reset unit, a wire connector and probe units, the reset unit comprising a cam contact block and a horizontal driving unit connected with the front terminal of the cam contact block; the horizontal driving unit is at the rear terminal of the linear sliding rail holder; a wedge-shaped driving surface and a vertical surface matching with the cam are on the cam contact block from bottom to top.