Battery Pack Partition Plate Layout for Compact Module Support
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Solution Overview
Problem
The increase in the number of battery cells in a battery module leads to increased weight, which in turn requires larger cases to support the weight, hindering energy density and size reduction of the battery pack.
Innovation Solution
A battery pack configuration with a partition plate that divides battery modules, utilizing a case with a cover body and side wall portions to efficiently arrange and support modules, reducing the overall case size by effectively utilizing space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large number of pillars are provided in a case to support the increased weight of battery modules, then the weight support capability is improved, but the case size increases
Solution Approach 1:
The patent divides the case into multiple functional components: a case main body, a partition plate, and a cover body. The partition plate segments the internal space to create two stages for battery module arrangement. This segmentation allows the case to support battery module weight through the distributed structure of the partition plate and support members rather than requiring numerous pillars throughout the entire case, thus maintaining weight support capability while reducing overall case size.
Solution Approach 2:
The patent transitions from a single-level arrangement to a two-stage stacked arrangement by introducing the partition plate as a horizontal divider. Battery modules are arranged on both the bottom portion side and the cover body side of the partition plate, utilizing the vertical dimension (height) more effectively. This dimensional change allows the case to accommodate the same or greater battery capacity in a more compact volume, reducing the need for extensive pillar support structures.
2Quantity of substance
If battery modules are arranged in two stages to improve energy density, then energy density is improved, but the case size may increase due to additional support structures
Solution Approach 1:
The partition plate segments the case interior into two distinct stages, allowing battery modules to be arranged vertically in a stacked configuration. This segmentation enables the case to hold more battery modules (improving energy density) without requiring a proportional increase in case volume, as the modules utilize the vertical space efficiently rather than requiring horizontal expansion with associated pillar support.
Solution Approach 2:
The partition plate serves multiple functions: it divides the internal space into two stages for increased module capacity, provides structural support for the stacked battery modules, and acts as a mounting surface for support members. This multi-functionality allows the case to achieve higher energy density without adding separate support structures that would increase case size.
Data Source
AI summary
A battery pack includes: a plurality of battery modules each including a plurality of battery cells arranged in a first direction; and a case that accommodates the plurality of battery modules, wherein the case includes a case main body having a bottom portion and a side wall portion that surrounds a periphery of the bottom portion, a cover body that covers an opening of the case main body, and a partition plate that partitions a battery module disposed on the bottom portion side and a battery module disposed on the cover body side, and by fixing the partition plate to the side wall portion, one battery module is disposed between the partition plate and the bottom portion, and another battery module is disposed between the partition plate and the cover body.