Cell Temperature Probe Testing Fixture Calibration
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Solution Overview
Problem
Cell temperature probes often fail to accurately detect cell temperatures due to aging or defects, leading to safety concerns during charging and discharging processes, as they cannot be effectively tested to determine their operational status.
Innovation Solution
A testing fixture and system that includes a microcomputer, measurement cases with probe-contacting areas, temperature instruments, and heaters, connected to a central control system, which performs a testing process by comparing sensing temperature values from cell temperature probes with standard temperature values to verify and calibrate their accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If cell temperature probes are used for long-term monitoring, then continuous temperature detection is achieved, but measurement precision deteriorates due to aging and deterioration
Solution Approach 1:
The patent implements periodic testing of temperature probes using a dedicated testing fixture before actual cell monitoring begins. The testing fixture pre-calibrates and validates probe accuracy, ensuring measurements remain precise throughout the monitoring duration. This preliminary action prevents accuracy degradation from affecting actual monitoring operations.
Solution Approach 2:
The system incorporates a feedback mechanism where test results from the testing fixture are used to determine whether probes require replacement or recalibration. The central control system receives test data and automatically manages probe maintenance schedules, creating a closed-loop system that maintains measurement precision over time through continuous monitoring and periodic validation.
2Ease of operation
If traditional testing methods are used, then testing simplicity is maintained, but reliability of probe operation verification deteriorates
Solution Approach 1:
The patent introduces a dedicated testing fixture as an intermediary device between the temperature probes and the cell monitoring system. This fixture provides a controlled test environment with known temperature conditions, allowing accurate verification of probe functionality without requiring actual cell conditions. The fixture acts as a mediator that simplifies testing while ensuring reliable verification through standardized test procedures.
3Device complexity
If no testing system is implemented, then device complexity is reduced, but loss of information regarding probe status increases
Solution Approach 1:
The testing fixture enables self-diagnosis and self-verification of temperature probe status. The system automatically tests probes, records results, and generates status reports without requiring external intervention. This self-service capability ensures comprehensive information about probe operational status is captured and stored, preventing information loss while maintaining relatively simple system architecture through automated processes.
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
Enables immediate detection of abnormal cell temperature probes, allowing for timely maintenance and ensuring accurate temperature monitoring, thereby preventing overheating issues during cell processes.
Implementation Method 1
The set of heaters is electrically connected to the microcomputer and thermally connected to the measurement case
Implementation Method 2
The temperature instrument has a sensing terminal disposed on the inner surface of the measurement case, and a location of the sensing terminal disposed in the inner surface is aligned with the probe-contacting area
Implementation Method 3
The outer surface includes a probe-contacting area adapted to be contacted by the cell temperature probe within the formation device during the testing process, so that a sensing temperature value related to the measurement case is obtained by the cell temperature probe
Data Source
AI summary
A testing fixture for a cell temperature probe includes a microcomputer, a temperature probe, a measurement case, a temperature instrument and heaters. The microcomputer configured to receive a control command for executing a testing process. The measurement case has an outer surface and an inner surface. The outer surface includes a probe-contacting area used for being contacted by the cell temperature probe within a formation device in the testing process. The temperature instrument is electrically connected to the microcomputer and has a sensing terminal disposed on the inner surface of the measurement case. The location of the sensing terminal is aligned with the probe-contacting area in a direction of a thickness of the measurement case. The heaters are electrically connected to the microcomputer and thermally to the measurement case.