Integrated Battery Module Housing Design for Energy Density
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Solution Overview
Problem
Conventional battery module assembly results in a high weight ratio of mechanical structural members and low energy density due to the inclusion of separate lower shell bodies for bare cells and battery modules.
Innovation Solution
A housing design for battery modules that integrates accommodating chambers for bare cells within a lower shell body, with connecting members and output components for series connection, eliminating the need for external mechanical structures, and using a barrier film to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If separate lower shell bodies are used for bare cells and battery modules, then mechanical structural integrity is improved, but weight ratio of mechanical structural members increases and energy density decreases
Solution Approach 1:
The patent merges the lower shell body and battery module housing into a single integrated structure. The lower shell body is designed to simultaneously serve as the housing for the battery module, eliminating the need for separate mechanical structures. This integration reduces the overall weight of mechanical structural members while maintaining structural integrity, thereby improving energy density.
2Stability of the object's composition
If multiple separate components are used for housing and assembly, then structural stability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple housing components into a unified lower shell body structure that integrates the battery module housing with the cell-level protective structure. This reduces the number of separate parts and simplifies assembly operations while maintaining structural stability through the integrated design.
3Quantity of substance
If integrated housing design is used, then energy density is improved, but manufacturing precision requirements increase
Solution Approach 1:
The integrated lower shell body is designed with segmented accommodating chambers for individual bare cells, each chamber being a standardized module. This segmentation allows for modular manufacturing where each chamber can be produced with consistent precision standards, and then assembled into the complete integrated structure, making the manufacturing process more controllable and precise.
Data Source
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AI summary
The present application relates to the field of energy storage devices, and particularly relates to a housing of battery module and a battery module. The housing includes a lower shell, an upper cover and two output components, wherein the lower shell includes a lower shell body and at least one connecting member; the lower shell body is separated into a plurality of accommodating chambers for accommodating a bare cell; an installation site for connecting member is provided in each accommodating chamber; every two adjacent accommodating chambers are provided with one connecting member between and penetrating through the every two adjacent accommodating chambers, and the one connecting member is fixed on two installation sites for connecting member in the every two adjacent accommodating chambers; an installation site for output component and an output hole are provided in each of a first one and a last one of the plurality of accommodation chambers; each output component is arranged on one installation site for output component; the two output components are sealedly connected with two output holes, respectively; the upper cover is capable of covering and matching with the lower shell body. The battery module includes a plurality of bare cells and the housing of a battery module, each accommodation chamber accommodates a bare cell, bare cells in two adjacent accommodation chambers are connected in series, and the two output component are also connected in series with the bare cells. The battery module has improved energy density.