Back-to-Back Battery Module Layout for Low-Height Packaging
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Solution Overview
Problem
Stacking multiple 12 V battery cells in a vertical direction increases the height of the cell sets, making it difficult to install them on electrical devices, particularly in electric vehicles where space is limited.
Innovation Solution
A battery module design featuring two cell sets positioned back to back with laterally extending poles, electrically connected by a CCS assembly that facilitates electrical conduction, temperature, and voltage collection, while optimizing the use of lateral space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple single cells are stacked in a vertical stacking direction to increase battery capacity, then the power supply capacity increases, but the height of the cell sets increases making installation difficult
Solution Approach 1:
The patent transitions from a single vertical stacking direction to a three-dimensional arrangement by positioning two cell sets back-to-back with lateral pole extension. This dimensional change allows power capacity to increase through both cell quantity and spatial configuration, while the height increase is distributed across two separate cell sets rather than concentrated in one tall stack, making the battery module suitable for vehicle installations with height constraints.
2Length of stationary object
If two cell sets are positioned back to back with lateral pole extension, then the height space is reduced while maintaining power supply capacity, but the CCS assembly structure becomes more complex
Solution Approach 1:
The patent merges the CCS assembly into a unified structure that serves both cell sets simultaneously. The CCS assembly includes a common support frame and integrated conduction units that electrically connect both cell sets through lateral extensions, consolidating what could have been two separate CCS assemblies into one shared structure, thereby reducing overall complexity.
Solution Approach 2:
The CCS assembly is designed with multi-functionality to handle both cell sets through a single integrated structure. The conduction units can electrically connect to multiple cell sets through lateral pole extensions, and the support frame provides structural support for the entire battery module, making the CCS assembly a universal component that serves multiple functions across both cell sets.
3Reliability
If the CCS assembly extends in the stacking direction to connect cell sets, then electrical conduction is achieved, but lateral space is underutilized
Solution Approach 1:
The patent utilizes the lateral dimension for pole extension and CCS assembly configuration instead of relying solely on vertical stacking. By extending poles laterally and arranging the CCS assembly to connect cell sets through this lateral dimension, the design achieves reliable electrical conduction while effectively utilizing lateral space that would otherwise be underutilized in conventional vertical-only configurations.
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 allows for a higher power supply capacity without significantly increasing the height, making it more suitable for electric vehicles, and reduces production costs through a simpler CCS assembly structure.
Implementation Method 1
a CCS assembly, electrically connected to each of the two cell sets, so as to realize electrical conduction between the two the cell sets
Data Source
AI summary
Disclosed is a battery module in the present disclosure. The battery module includes: two cell sets provided back to back, poles of the cell sets extending out laterally; and a CCS assembly 100, electrically connected to each of the two cell sets, so as to realize electrical conduction between the two cell sets, and to realize temperature and voltage collection of each of the cell sets. The CCS assembly is arranged along a circumferential direction of the two cell sets and extends in a stacking direction of the single cells in each of the cell sets.