Conductive Module Side-by-Side Arrangement for Battery Pack Miniaturization
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Solution Overview
Problem
Conventional battery packs face challenges in miniaturization due to the size and arrangement of conductive modules, including cases and bus bars, which hinder the compact integration of battery cells and monitoring systems.
Innovation Solution
A conductive module design featuring a first and second conductive member, a circuit protection member with fusible bodies, and an accommodation member, arranged to minimize height and optimize space usage along the plane of battery cell arrangement, allowing for side-by-side placement orthogonal to the reference plane, thereby reducing the overall size of the battery pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a case is provided to collectively attach conductive modules to a battery module, then the conductive modules are protected and organized, but the size of the battery pack increases
Solution Approach 1:
The case is merged with the battery module by providing engagement protrusions on the case that fit into engagement recesses on the battery module. This integration allows the case to serve as both protective enclosure and mounting structure, eliminating the need for separate attachment mechanisms and reducing overall space requirements.
Solution Approach 2:
The conductive modules are arranged in the width direction of the battery module rather than stacking them in the height direction. This dimensional reorganization allows multiple conductive modules to be positioned side-by-side on the battery module surface, reducing the height dimension and overall pack volume while maintaining protection through the integrated case structure.
2Reliability
If bus bars, cases and fuse units are stacked on the battery module, then electrical connections and protection are ensured, but the battery pack size increases
Solution Approach 1:
The conductive module is divided into functional segments: the bus bar for electrical connection, the fuse unit for circuit protection, and the case for integration. These segmented components are arranged in the width direction on the battery module surface rather than stacked vertically, maintaining all protective and connective functions while reducing height and overall volume.
3Reliability
If conductive modules are arranged with cases in the conventional manner, then electrical connections are maintained, but miniaturization of the battery pack is hindered
Solution Approach 1:
The arrangement of conductive modules is changed from vertical stacking (height direction) to horizontal placement (width direction) on the battery module. The bus bars extend in the width direction to connect electrode terminals, and the fuse units are positioned on the battery module surface within the case, transforming the height-oriented layout into a width-oriented layout that reduces overall pack height.
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
This design enables the miniaturization of battery packs by reducing the height of the conductive modules and eliminating the need for additional cases, while maintaining effective electrical connections and protection, thus enhancing the pack's compactness and durability.
Implementation Method 1
a fusible body arranged between the first electrical connection portion and the second electrical connection portion
Data Source
AI summary
A conductive module includes a first conductive member electrically connected to an electrode terminal of a battery cell, a second conductive member that electrically connects a battery monitor monitoring a battery state to the first conductive member, and an accommodation member. The first conductive member, the second conductive member, and the accommodation member are arranged to have a plane along an arrangement direction of a plurality of the battery cells and along a wall surface of an aggregate formed of the plurality of battery cells as a reference plane, and to be arranged side by side along the reference plane such that each transverse direction is orthogonal to the reference plane.