Flexible PCB Temperature Sensing Inside Multi-Cell Battery Packs
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Solution Overview
Problem
Existing battery packs lack an efficient means to measure temperature, which is crucial for effective temperature management and performance maintenance.
Innovation Solution
A printed circuit board (PCB) with a conductive pattern and integrated temperature sensor, such as a thermistor, is embedded in a flexible film to measure the temperature within the battery pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate temperature sensor is installed in the battery pack, then temperature measurement capability is achieved, but device complexity and installation difficulty increase
Solution Approach 1:
The temperature sensor is integrated directly into the printed circuit board structure, merging the sensing function with the existing PCB substrate. This eliminates the need for separate temperature sensor installations and reduces overall device complexity while maintaining measurement capability
Solution Approach 2:
The printed circuit board serves multiple functions: electrical connection, structural support, and temperature sensing. By making the PCB multi-functional, the patent eliminates the need for additional dedicated temperature sensing components, thereby reducing device complexity
2Power
If multiple battery cells are connected in series/parallel to increase capacity, then energy output is improved, but temperature management difficulty increases
Solution Approach 1:
The PCB integrates temperature sensing capability alongside its electrical connection function for multiple battery cells. This allows simultaneous monitoring of temperature across high-capacity battery configurations without adding separate management systems
Solution Approach 2:
The printed circuit board performs self-monitoring of temperature conditions while managing electrical connections. The integrated sensor allows the PCB to automatically detect and report temperature status, enabling self-service temperature management in high-capacity battery packs
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 easy and accurate temperature measurement within the battery pack, facilitating effective temperature management and preventing performance deterioration.
Implementation Method 1
a temperature sensor provided on a second portion of the film and configured to measure the temperature inside the battery pack
Data Source
AI summary
The present invention relates to a printed circuit board for a battery pack capable of measuring temperature and a method for manufacturing same. The printed circuit board for a battery pack according to the present invention, capable of measuring temperature and provided in a battery pack including a plurality of secondary batteries, includes: a film; a conductive pattern provided on a first portion of the film; and a temperature sensor provided on a second portion of the film and configured to measure the temperature inside the battery pack.