Curved Battery Module Assembly Using a Flexible Rod

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Solution Overview

Problem

Existing battery modules for electric bicycles are limited in versatility due to their fixed straight configuration, which restricts their installation on bicycle frames with varying curvatures.

Innovation Solution

A battery module comprising a plurality of battery assemblies connected by a flexible rod, allowing the module to be bent into a curved shape for installation on frames with different curvatures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixing spoke is used to connect battery assemblies, then the battery assemblies are securely fixed, but the battery module can only be arranged in a straight direction, limiting versatility

Engineering Contradiction:
Improvebattery module adaptabilityVSAvoidfixing structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces the rigid fixing spoke with a flexible rod that can bend to accommodate curved arrangements of battery assemblies. The flexible rod maintains the securing function while enabling the battery module to adapt to various frame curvatures, directly resolving the contradiction between adaptability and structural complexity.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The flexible rod introduces dynamic capability to the fixing structure, allowing it to change shape and accommodate different curvature requirements. This dynamic element enables the battery module to be installed on frames with varying curvatures without requiring multiple specialized fixing structures.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If battery assemblies are arranged in a straight direction, then the fixing structure is simple, but the battery module can only be installed on straight lower tubes, reducing versatility

Engineering Contradiction:
Improveinstallation versatilityVSAvoidbattery module shape
Core Design Contradiction:
Adaptability or versatilityVSShape

Solution Approach 1:

The flexible rod enables the battery assembly to transition from a straight configuration to a curved configuration. This flexible connection allows the battery module to conform to curved lower tubes while maintaining structural integrity, directly addressing the shape limitation.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent introduces curvature capability to the battery module by using a flexible rod that can bend into curved shapes. This allows the previously straight battery assembly to adapt to curved installation surfaces, expanding the range of applicable frame geometries.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Adaptability or versatility

If a rigid fixing spoke is used, then the structural stability is maintained, but the battery module cannot be bent to fit curved frames

Engineering Contradiction:
Improvecurvature adaptabilityVSAvoidbattery assembly stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The flexible rod provides both flexibility for curvature adaptation and sufficient structural stability to secure the battery assemblies. The material and design of the flexible rod are optimized to maintain stability while enabling bending, resolving the contradiction between rigidity and adaptability.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The flexible rod's physical parameters (such as bending radius, flexibility modulus) are designed to allow controlled deformation while maintaining structural stability. This enables the battery module to transition between different curvature states without compromising the stability of the battery assembly connection.

Inventive Principle:
Principle #35Parameter changes

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 battery module can be adjusted to fit variously curved bicycle frames, enhancing its versatility and installation flexibility.

Implementation Method 1

a flexible rod sequentially passes through the battery assemblies, and the battery assemblies jointly construct a curved structure by bending the flexible rod

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the at least one conductive elastic piece may be connected between one of the battery assemblies and another of the battery assemblies. the conductive elastic piece may be deformed according to the bending of the battery module

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250118867A1Battery module
Publication Date: 2025.04.10 LG ENERGY SOLUTION LTD
  • US20250118867A1 patent drawing
  • US20250118867A1 patent drawing
  • US20250118867A1 patent drawing

AI summary

Discussed is a battery module, which includes a plurality of battery assemblies and a flexible rod. Each battery assembly includes a frame and at least one battery unit, and the at least one battery unit is disposed within the frame. The flexible rod sequentially passes through the plurality of battery assemblies, and the plurality of battery assemblies jointly construct a structure configured to be curved by bending the flexible rod.