Battery Module Pulling Component Compresses Cells
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Solution Overview
Problem
Traditional battery modules suffer from low structural strength due to expansion forces exerted by batteries, leading to potential deformation and disassembly issues.
Innovation Solution
A battery module design featuring a fixing frame composed of a first and second end plate, a connecting component, and a pulling component with segments that compress and stabilize the batteries, preventing deformation and enhancing structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If batteries are assembled in series or parallel to form a battery module with increasing capacity, then the battery capacity is improved, but the batteries may expand and exert expansion forces on the end plate causing deformation and displacement
Solution Approach 1:
The pulling component is divided into multiple segments (first connecting segment, intermediate segment, second connecting segment) that can independently interact with different parts of the battery structure. This segmentation allows the component to effectively distribute and manage expansion forces across multiple connection points, preventing localized deformation while maintaining overall structural integrity.
Solution Approach 2:
The pulling component is pre-configured with a specific structure that enables it to automatically counteract expansion forces as they occur during battery operation. The intermediate segment with clearance hole is positioned in advance to engage with the battery's vent, creating a preliminary restraint mechanism that prevents deformation before it occurs rather than correcting it after the fact.
2Device complexity
If traditional battery module structures are used, then the device complexity is low, but the structural strength is insufficient and the module is liable to disassembly
Solution Approach 1:
The pulling component utilizes a nested structure where the intermediate segment with clearance hole is positioned within the path of the battery's vent, and the first and second connecting segments are arranged to connect to opposite sides of the battery. This nested arrangement allows multiple functional segments to be compactly integrated into a single component that fits within the existing battery module structure, enhancing reliability without significantly increasing overall complexity.
Solution Approach 2:
The pulling component acts as an intermediary element between the first end plate and the second end plate, mediating the forces between them. The intermediate segment with clearance hole serves as a mediator that allows controlled interaction with the battery's vent while the connecting segments transmit restraining forces to the end plates, preventing their separation while maintaining structural integrity.
3Device complexity
If the end plate is fixedly connected without additional components, then the device complexity is low, but the end plate deforms and displaces under expansion forces
Solution Approach 1:
The pulling component applies local quality by concentrating its restraining effect at specific critical locations where expansion forces are most likely to cause deformation. The intermediate segment with clearance hole is positioned to engage with the battery's vent at a specific location, while the first and second connecting segments are arranged to apply restraining forces at opposite ends of the battery, providing localized reinforcement where it is most needed without requiring comprehensive reinforcement of the entire structure.
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
The design effectively counteracts expansion forces, ensuring the battery module remains stable and reliable, preventing deformation and maintaining structural integrity during use.
Implementation Method 1
the pulling component can tighten the first end plate and the second end plate in an arrangement direction of the batteries to compress the batteries along with the first end plate and the second end plate
Data Source
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AI summary
The disclosure relates to a battery module. The battery module, which comprises: a first end plate (1), a plurality of batteries (2) and a second end plate (3) successively arranged in a direction, wherein the battery (2) comprises a top cover (2a); a connecting component (4), wherein which the first end plate (1) is fixedly connected to the second end plate (3) through the connecting component (3); and a pulling component (5) comprising a first connecting segment (51), an intermediate segment (52) and a second connecting segment (53) successively arranged, wherein the first connecting segment (51) is fixedly connected to the first end plate (1), the intermediate segment (52) is disposed facing the top cover (2), and the second connecting segment (53) is fixedly connected to the second end plate (3).