Battery Pack Sensor Mounting for Stable Cell Temperature Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery packs face challenges in securing easy installation of temperature sensors and ensuring reliable temperature measurement for multiple battery cells due to manual fixing with adhesive tape, which increases manufacturing time and cost and leads to inconsistent temperature readings.
Innovation Solution
A battery pack design featuring a module case with an accommodation portion and fixing rib to secure the temperature sensor, eliminating the need for adhesive tape, and incorporating a thermistor portion with a wire, pressing protrusions, and an elastic member to maintain consistent contact with battery cells for accurate temperature measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive tape is used to fix the temperature sensor manually, then the temperature sensor can be positioned at the required location, but the manufacturing time and manufacturing cost increase
Solution Approach 1:
The module case is divided into multiple functional portions: a first portion that directly contacts the battery cell for temperature measurement, a second portion that accommodates the temperature sensor, and a third portion that fixes the sensor in position. This segmentation allows each portion to perform its specific function independently, eliminating the need for adhesive tape while ensuring reliable positioning.
Solution Approach 2:
The module case structure itself provides the fixing function through its integrated portions. The first portion contacts the battery cell, the second portion houses the sensor, and the third portion secures the sensor in place, allowing the structure to serve its own fixation needs without external adhesive materials or manual intervention.
2Ease of manufacture
If adhesive tape is used to fix the temperature sensor, then the sensor can be attached to the battery cell, but the position of the temperature sensor changes depending on the worker leading to measurement deviation
Solution Approach 1:
The module case is divided into multiple functional portions: a first portion that directly contacts the battery cell for temperature measurement, a second portion that accommodates the temperature sensor, and a third portion that fixes the sensor in position. This segmentation allows each portion to perform its specific function independently, eliminating the need for adhesive tape while ensuring reliable positioning.
Solution Approach 2:
The design changes the positioning parameter from variable (worker-dependent adhesive application) to fixed (structurally determined positions). The first, second, and third portions are designed with specific geometries that automatically position the temperature sensor at a precise, repeatable location relative to the battery cell, eliminating worker variability.
3Device complexity
If a simple module case structure is used, then the device complexity is low, but the temperature sensor cannot be securely fixed and reliable temperature measurement cannot be ensured
Solution Approach 1:
The module case is divided into multiple functional portions: a first portion that directly contacts the battery cell for temperature measurement, a second portion that accommodates the temperature sensor, and a third portion that fixes the sensor in position. This segmentation allows each portion to perform its specific function independently, eliminating the need for adhesive tape while ensuring reliable positioning.
Solution Approach 2:
The module case integrates multiple functions into a single unified structure. The first, second, and third portions are combined into one piece that simultaneously provides structural support, temperature measurement contact, sensor accommodation, and sensor fixation, avoiding the need for separate adhesive tapes or additional fixing components.
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 design reduces material costs and manufacturing time while ensuring precise and reliable temperature measurement by stabilizing the sensor's position, enhancing the battery pack's management and safety through consistent temperature readings.
Implementation Method 1
a temperature sensor connected to the temperature measuring unit and configured to detect the temperature of at least one of the plurality of battery cells and transmit an electrical signal to the temperature measuring unit
Implementation Method 2
an elastic member to maintain consistent contact with battery cells for accurate temperature measurement
Data Source
AI summary
Disclosed is a battery pack, which includes a plurality of battery cells; a temperature measuring unit configured to measure a temperature of at least one of the plurality of battery cells; a temperature sensor connected to the temperature measuring unit and configured to detect the temperature of at least one of the plurality of battery cells and transmit an electrical signal to the temperature measuring unit; and a module case including a sidewall portion configured to form an inner space for accommodating the plurality of battery cells, an opening formed in the sidewall portion to expose at least one of the plurality of battery cells to the outside partially, an accommodation portion having an entrance communicating with the opening and configured to accommodate an end of the temperature sensor, and a fixing rib configured to extend from the sidewall portion to cover the entrance partially.