Battery Module Temperature Sensor Attachment Check by Self-Heating
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Solution Overview
Problem
Existing methods for inspecting the attachment state of temperature sensors in battery modules are inefficient, requiring charging and discharging processes that can cause secondary defects and consume significant energy, while also failing to accurately assess sensor attachment quality.
Innovation Solution
An apparatus and method utilizing a switch to control power to the temperature sensor, measuring temperature differences before and after heating, and generating attachment state information based on these differences, without the need for charging or discharging the battery module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If charging and discharging processes are used to inspect temperature sensor attachment state, then attachment quality can be assessed, but inspection time increases and energy consumption rises
Solution Approach 1:
The patent extracts the temperature sensor from the battery module context and applies power to it independently. By separating the sensor inspection from the battery charging/discharging process, the inspection can be performed quickly without requiring full battery cycles, thus reducing inspection time while maintaining measurement precision through direct temperature monitoring of the sensor itself
Solution Approach 2:
The patent performs preliminary heating of the temperature sensor before actual inspection. By pre-heating the sensor to a known temperature and then measuring its cooling rate or temperature change over time, the system can assess attachment quality without requiring full battery charging/discharging cycles, significantly reducing inspection time while maintaining assessment accuracy
2Measurement precision
If charging and discharging processes are used to inspect temperature sensor attachment state, then attachment quality can be assessed, but energy consumption increases
Solution Approach 1:
The patent extracts the temperature sensor inspection from the energy-intensive battery charging/discharging process. By applying power directly to the temperature sensor independently of the battery module operation, the inspection consumes minimal energy while still providing accurate attachment quality assessment through direct temperature measurement
Solution Approach 2:
The patent uses preliminary heating of the temperature sensor with minimal energy input, followed by temperature decay measurement. This approach consumes far less energy than full battery charging/discharging cycles while maintaining measurement precision through the sensor's thermal response characteristics
3Measurement precision
If traditional inspection methods are used, then attachment state can be evaluated, but secondary defects may occur in the battery module
Solution Approach 1:
The patent extracts the temperature sensor from the battery module for independent inspection. By removing the sensor and applying power to it separately, the inspection process eliminates the risk of causing secondary defects in the battery module through charging/discharging operations, while still achieving accurate attachment state evaluation through direct sensor measurement
Solution Approach 2:
The patent uses the temperature sensor itself as an intermediary object for inspection. Instead of applying stress or energy to the battery module, the system uses the sensor's own thermal properties and response to applied power as the measurement medium, eliminating harmful effects on the battery while maintaining evaluation precision
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
This approach reduces inspection time, eliminates the need for charging and discharging, and significantly decreases energy consumption, while accurately determining the attachment state of temperature sensors.
Implementation Method 1
a switch configured to switch electrical connection ON or OFF between a temperature sensor, disposed in a battery module, and a power source, applying power to the temperature sensor, such that the temperature sensor generates heat
Data Source
AI summary
A temperature sensor attachment state inspecting apparatus of a battery module, the temperature sensor attachment state inspecting apparatus includes a switch configured to switch electrical connection ON or OFF between a temperature sensor, disposed in a battery module, and a power source, applying power to the temperature sensor, such that the temperature sensor generates heat, and a controller configured to measure a sensing temperature difference before and after the temperature sensor generates heat due to the power source, and to generate attachment state information of the temperature sensor to the battery module, based on the sensing temperature difference.