Battery Module Venting Layout for Redirecting Heat and Flame
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Solution Overview
Problem
Conventional battery modules and packs face issues with high-temperature heat, gas, and flame discharge causing damage to adjacent modules during ignition, as they are not effectively dispersed, leading to potential damage to terminal bus bars and battery cells.
Innovation Solution
A battery module design featuring a venting part on the module frame to discharge high-temperature heat and flame through a structured outlet, directing the discharge away from adjacent modules, with inclined or protruding designs to guide the discharge safely outside the module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If battery modules are arranged with end plates facing each other in a battery pack, then the battery pack structure is compact and space-efficient, but high-temperature heat, gas, and flame discharged during ignition can damage adjacent battery modules
Solution Approach 1:
The harmful discharge path is extracted and redirected away from adjacent modules. The venting part is configured to discharge heat, gas, and flame toward the side surface of the battery module rather than toward adjacent modules, separating the discharge path from vulnerable components of neighboring modules.
Solution Approach 2:
The venting part acts as an intermediary structure that intercepts and redirects the discharge. By positioning the venting part at a specific location on the module frame, it serves as a mediator that changes the direction of heat, gas, and flame discharge away from adjacent modules and toward safer directions (side surfaces).
2Power
If terminal bus bars are formed on end plates facing each other, then electrical connection between modules is efficient, but the terminal bus bars are vulnerable to damage from high-temperature heat and flame discharge
Solution Approach 1:
The vulnerability of terminal bus bars is addressed by extracting them from the hazardous zone. The venting part redirects discharge away from the end plates where terminal bus bars are located, effectively removing the terminal bus bars from the path of harmful discharge.
Solution Approach 2:
The venting part is designed in advance to prevent damage to terminal bus bars. By configuring the venting part to discharge toward side surfaces rather than end plates, the system preemptively protects the terminal bus bars from heat and flame damage before ignition occurs.
Data Source
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AI summary
A battery module according to embodiments of the present disclosure includes: a battery cell stack in which a plurality of battery cells are stacked; and a module frame for housing the battery cell stack, wherein a venting part is formed on the lower surface of the module frame, wherein the battery cell comprises: a cell main body; electrode leads formed to protrude from both ends of the cell main body; and a terrace part formed to extend from the cell case in a direction in which the electrode leads protrude, and wherein the venting part is formed adjacent to a portion where the terrace part is located rather than the cell main body.