Battery Module Frame Layout for High-Temperature Venting
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Solution Overview
Problem
Existing battery modules face challenges in safely and effectively discharging high-temperature gases and flames generated by ignition phenomena, particularly due to materials susceptible to high temperatures, which can compromise safety and venting performance.
Innovation Solution
A battery module design featuring an upper frame made of a material with a higher melting point than the lower frame, incorporating venting parts and structures that facilitate safe discharge of high-temperature gases and flames, along with a heat sink for enhanced cooling and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional materials are used for the upper frame, then manufacturing cost and ease of manufacture are improved, but the ability to discharge high-temperature gas and flame is worsened
Solution Approach 1:
The patent applies parameter changes by selecting materials with different melting points for the upper and lower frames. The upper frame uses a material with a higher melting point than the lower frame, which enables the upper frame to withstand high-temperature gases and flames during venting while maintaining structural integrity. This material parameter differentiation resolves the contradiction between ease of manufacture and venting performance.
2Reliability
If a material with high melting point is used for the upper frame, then venting performance and safety are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by differentiating material properties at different locations within the battery module. Specifically, the upper frame is made of a material with higher melting point than the lower frame, creating localized material quality differentiation. This allows the upper frame to specifically handle high-temperature venting requirements while the lower frame maintains its structural function, thereby improving safety without requiring all components to be made of high-temperature resistant materials.
3Ease of manufacture
If the upper frame and lower frame are made of the same material, then manufacturing simplicity is improved, but the ability to prevent heat transfer to adjacent cells is worsened
Solution Approach 1:
The patent applies parameter changes by varying the melting point parameter of materials used in different frames. The upper frame uses a material with higher melting point than the lower frame, creating a thermal gradient that prevents heat transfer to adjacent battery cells during venting events. This material parameter differentiation enables the upper frame to act as a thermal barrier while maintaining manufacturing feasibility.
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 design improves safety and venting performance by effectively discharging high-temperature gases and flames, while maintaining structural integrity and preventing heat transfer to adjacent cells.
Implementation Method 1
the upper frame includes a material having a melting point higher than a melting point of a material constituting the lower frame
Data Source
AI summary
Discussed is a battery module that may include a battery cell assembly including a first battery cell assembly and a second battery cell assembly in which a plurality of battery cells are stacked, respectively; an upper frame that houses an upper surface and opposite side surfaces of the battery cell assembly and is opened in front and rear surfaces; a lower frame that houses a lower surface and the opposite side surfaces of the battery cell assembly and is opened in front and rear surfaces; and end plates that are respectively located on a surface that is adjacent to an outer side from among front and rear surfaces of the first battery cell assembly and a surface that is adjacent to an outer side among front and rear surfaces of the second battery cell assembly, wherein the first battery cell assembly and the second battery cell assembly are arranged separately in a direction facing each other, and wherein the upper frame includes a material having a melting point higher than a melting point of a material constituting the lower frame.