Modular Pressure Measuring Unit for Battery Swelling Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery inspection devices inaccurately measure swelling pressure due to structural limitations that restrict the movement of partial plates and disperse pressure through elastic connections, leading to inaccurate pressure measurements.
Innovation Solution
A pressure measuring unit with a detachable design, comprising a body part, connector part, and control part, which allows for detachable attachment and accurate pressure measurement, and a battery inspection device that includes multiple such units to determine pressure distribution and size across a battery's surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the second plate is fixed by fastening members to transmit swelling pressure to load cells, then the battery swelling can be inspected, but the movement of the second plate is restricted causing measurement loss and inaccurate pressure measurement
Solution Approach 1:
The second plate is divided into multiple independent partial plates that are not connected to each other. Each partial plate can move independently in response to swelling pressure, allowing direct transmission of pressure to the load cells without restriction from fastening members or connections to other plates.
2Measurement precision
If partial plates are connected by connection portions to form the second plate, then the structure is stabilized, but swelling pressure applied to one partial plate is dispersed to other partial plates causing measurement inaccuracy
Solution Approach 1:
The second plate is segmented into multiple independent partial plates without connection portions. This segmentation ensures that swelling pressure applied to any partial plate is transmitted directly to the load cell beneath it without being dispersed to adjacent plates, maintaining measurement accuracy while providing structural stability through the array of independent plates.
3Adaptability or versatility
If connection portions made of elastic or ductile material are used to connect partial plates, then the structure is more flexible, but swelling pressure is dispersed through the connection portion instead of being transmitted directly to the load cell
Solution Approach 1:
The connection portions made of elastic or ductile material are completely removed from the structure. The partial plates are left entirely independent without any connecting elements, ensuring that swelling pressure is transmitted directly from each partial plate to its corresponding load cell without dispersion through elastic connections.
4Measurement precision
If a single large pressure measuring unit is used, then the device is simpler, but it cannot accurately measure pressure distribution across different parts of the battery
Solution Approach 1:
The pressure measuring system is segmented into multiple independent pressure measuring units, each comprising a partial plate and a load cell. This segmentation enables accurate measurement of pressure distribution across different parts of the battery by providing discrete measurement points, while the modular nature of the units keeps the overall device design relatively simple and systematic.
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 provides scalable and accurate pressure measurement, enabling precise diagnosis of battery swelling by determining pressure distribution and size, distinguishing between gas generation and foreign substance causes, and accommodating batteries of varying thicknesses.
Implementation Method 1
a pressure measuring part coupled to the upper surface of the body part and configured to measure a pressure applied toward the upper surface of the body part from the outside to generate a pressure value
Data Source
AI summary
A pressure measuring unit including: a body part configured to have an upper surface, a lower surface, and a plurality of side surfaces; a connector part configured to be provided to at least one side surface among the plurality of side surfaces of the body part; a pressure measuring part coupled to the upper surface of the body part and configured to measure a pressure applied toward the upper surface of the body part from the outside to generate a pressure value; and a control part connected to the pressure measuring part to receive the measured pressure value from the pressure measuring part and configured to output the received pressure value to a communication line connected thereto.