Battery Cell Thermal Sensing via Light Guide Temperature Mapping
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Solution Overview
Problem
Existing battery temperature measurement systems for electric vehicles are costly and inefficient, as they require multiple temperature sensors to monitor each battery cell, increasing the risk of undetected overheating and potential fires.
Innovation Solution
A temperature measurement apparatus using a light collector and receiver system that condenses electromagnetic waves from battery cells, allowing for efficient temperature measurement of partial regions with a thin light guide plate and wide-angle light collecting structure, determining maximum or minimum temperatures based on unique wavelengths and reference values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature sensors are installed on all battery cells to monitor each temperature, then measurement precision and reliability are improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent applies universality by using a single type of temperature sensor that can measure temperature across multiple battery cells through electromagnetic wave detection. The sensor system is designed to detect thermal radiation from multiple cells simultaneously, making one sensor perform the function of multiple sensors would traditionally be needed
Solution Approach 2:
The patent uses electromagnetic wave copying to create a thermal image representation of battery cell temperatures. Instead of directly measuring each cell with physical contact sensors, the system captures thermal radiation information and creates a replicated temperature distribution map, allowing indirect measurement of multiple cells
2Device complexity
If temperature sensors are installed on only some battery cells to reduce cost, then device complexity is reduced, but measurement precision and safety reliability deteriorate due to unmonitored cells
Solution Approach 1:
The electromagnetic wave detection system creates a comprehensive thermal copy of all battery cells in the monitored region. Even though physical sensors are minimally installed, the system captures and reconstructs temperature information of all cells through thermal radiation detection, ensuring complete coverage without proportional increase in hardware
3Measurement precision
If a traditional sensor installation method is used to monitor all battery cells, then measurement precision is improved, but the space required for sensors and wiring increases
Solution Approach 1:
The system uses electromagnetic wave copying to obtain temperature information of battery cells without requiring physical sensors on each cell. The thermal radiation information is captured and processed to create a temperature distribution map, eliminating the need for extensive sensor and wiring infrastructure
Solution Approach 2:
A single detection device performs the function of multiple individual cell sensors would traditionally require. The universal detector can monitor the entire battery pack or multiple cells simultaneously through electromagnetic wave detection, consolidating what would traditionally require multiple distributed sensing points into one compact unit
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 system effectively measures temperature distributions across multiple battery cells with reduced space requirements, enhancing safety by identifying overheating risks without the need for extensive sensor installation, thus reducing costs and improving monitoring efficiency.
Implementation Method 1
condensing electromagnetic waves radiated from at least one battery cell using a thin light guide plate
Implementation Method 2
a light collector including a reflective member disposed on a surface opposite to a surface on which the electromagnetic wave is incident and configured to reflect or diffuse the electromagnetic wave
Implementation Method 3
at least one light receiving sensor disposed on one side surface of the light guide plate and configured to detect an infrared region of the electromagnetic wave
Implementation Method 4
an electromagnetic wave having a unique wavelength radiated by thermal energy generated in at least a partial region of at least one battery cell
Data Source
AI summary
The present disclosure provides a temperature measurement apparatus comprising: a light collecting unit located in at least a partial area of one surface of at least one battery cell, and for collecting electromagnetic waves radiated from the at least one battery cell; a light receiver for receiving the collected electromagnetic waves; and a control unit for measuring a temperature of the at least partial area of the one surface of the at least one battery cell on the basis of the received electromagnetic waves.