Battery Cell Assembly Cross-Beam Temperature Sensing Layout
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Solution Overview
Problem
Existing battery technologies lack effective temperature monitoring and distribution measurement capabilities, which is crucial for ensuring safety in secondary batteries used in mobility applications.
Innovation Solution
A battery cell assembly with first and second cross-beams, each containing a temperature sensor, and an integrated circuit for measuring voltages, allowing for precise temperature monitoring and distribution analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature sensors are placed in direct contact with battery cells, then temperature measurement accuracy is improved, but the risk of thermal damage and safety issues increases
Solution Approach 1:
The patent introduces cross-beams as intermediary structures that thermally couple the battery cells to temperature sensors without direct contact. The cross-beams act as thermal mediators, conducting heat from the battery cells to the sensors while maintaining physical separation, thus improving measurement accuracy without exposing sensors to direct thermal damage risks.
Solution Approach 2:
The patent segments the temperature monitoring function by separating the sensing element from the measurement target. Temperature sensors are mounted on cross-beams that are positioned near but not in direct contact with battery cells, dividing the system into distinct functional zones: the battery cell block, the cross-beam support structure, and the sensor assembly.
2Loss of information
If multiple temperature sensors are distributed throughout the battery assembly, then temperature distribution monitoring is improved, but device complexity increases
Solution Approach 1:
The cross-beams serve multiple functions simultaneously: they provide structural support for the battery cell block, act as thermal conduction paths to the sensors, and serve as mounting platforms for temperature sensors. This multi-functionality reduces overall system complexity while enabling distributed temperature monitoring across multiple locations.
3Reliability
If temperature sensors are positioned close to battery cells, then real-time temperature monitoring is improved, but the risk of thermal runaway propagation increases
Solution Approach 1:
The cross-beams function as thermal intermediaries that enable close proximity monitoring while providing thermal isolation. The sensors are mounted on cross-beams that are positioned adjacent to battery cells, allowing real-time temperature detection through thermal conduction across the beam, while the physical separation and beam structure prevent direct exposure to thermal runaway events.
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
Enhances temperature monitoring and distribution measurement, improving safety and reliability of battery packs by providing real-time temperature data for proactive management.
Implementation Method 1
a first temperature sensor spaced apart from the plurality of battery cells while in contact with the first cross-beam, and a second temperature sensor spaced apart from the plurality of battery cells while in contact with the second cross-beam
Data Source
Figure 1
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AI summary
Embodiments provide a battery cell assembly. The battery cell assembly includes a plurality of battery cells, first and second cross-beams spaced apart from each other with the plurality of battery cells between the first and second cross-beams, a second circuit assembly including an integrated circuit coupled to the plurality of battery cells and configured to measure voltages of the plurality of battery cells, a first temperature sensor spaced apart from the plurality of battery cells while in contact with the first cross-beam, and a second temperature sensor spaced apart from the plurality of battery cells while in contact with the second cross-beam.