Ring-Shaped Battery Cell Temperature Sensing in Compact Battery Units
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Solution Overview
Problem
Existing battery units lack effective internal temperature monitoring, leading to inefficient heat management and potential deterioration of battery cells due to temperature changes, and existing solutions increase the unit's size to accommodate temperature sensors.
Innovation Solution
A battery unit design with a ring-shaped temperature sensor that surrounds battery cells, utilizing a coupling part with a thickness less than the cell interval to avoid interference, allowing precise temperature monitoring without additional space, integrated with a support recess system and electrode network for efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature monitoring means is disposed inside the battery unit, then temperature monitoring capability is provided, but the overall size of the battery unit increases
Solution Approach 1:
The temperature sensor is nested on the outer surface of the battery cell, specifically on the lower surface, rather than being disposed inside the battery unit housing. This allows the sensor to be integrated into the existing compact structure without increasing the overall unit volume, while still enabling temperature monitoring of the battery cell.
Solution Approach 2:
The temperature monitoring function is achieved by placing the sensor on the outer surface (2D plane) of the battery cell rather than requiring 3D space inside the battery unit. This dimensional shift from internal to external placement eliminates the need for additional installation space within the unit volume.
2Measurement precision
If a temperature monitoring means is disposed inside the battery unit, then temperature monitoring capability is provided, but interference with battery cell arrangement occurs
Solution Approach 1:
The temperature sensor is extracted from the internal battery unit structure and placed on the outer surface of the battery cell. This extraction eliminates interference with the battery cell arrangement inside the unit, while the sensor still monitors the temperature of the cell it is attached to.
Solution Approach 2:
The battery cell itself serves as an intermediary medium, allowing the temperature sensor to be placed on its outer surface. This intermediary approach enables temperature monitoring without requiring the sensor to be positioned inside the battery unit where it would interfere with cell arrangement.
3Volume of moving object
If the coupling part thickness is reduced to fit between battery cells, then space utilization is improved, but manufacturing precision requirements increase
Solution Approach 1:
The coupling part is designed with a specific thickness parameter that is optimized to fit within the available space between battery cells. By carefully selecting and controlling this dimensional parameter, the design achieves both compact space utilization and manufacturability within standard tolerance ranges.
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 precise temperature monitoring and improved cooling performance within the battery unit, maintaining the compact size and efficient operation of the battery cells.
Implementation Method 1
a temperature sensor provided in a ring shape coupled to at least one battery cell of the plurality of battery cells while surrounding an outside thereof, and configured to sense a temperature in an inner space formed by the lower housing and the upper housing
Data Source
AI summary
Proposed is a battery unit in which a plurality of cylindrical battery cells, each of which has an upper surface provided with a positive electrode and a negative electrode, are mounted in rows and columns, the battery unit including a lower housing in which a plurality of support recesses supporting the plurality of battery cells are formed in rows and columns and are spaced apart each other, an upper housing coupled to the lower housing and having a plurality of straight removal regions in which regions corresponding to the upper surfaces of the plurality of battery cells are connected each other, an electrode network provided on an upper surface of the upper housing and provided as a plurality of busbars, and a ring-shaped temperature sensor coupled to at least one of the plurality of battery cells and sensing temperature in an inner space formed by the lower and upper housings.