Battery Module Side Plate With Bent Fixing Lug for Pack Stability

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Solution Overview

Problem

The stability of battery packs is insufficient due to the lack of a connection structure between the battery module bracket and the battery box, leading to instability in the entire battery pack.

Innovation Solution

A battery module with a side plate featuring a fixed side lug integrally formed by bending part of the body, which is configured to be connected to the battery box, enhancing the structural strength and stability by forming a secure connection with the box body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the battery module bracket is placed in the battery box without a connection structure, then the assembly process is simple, but the stability of the entire battery pack is insufficient

Engineering Contradiction:
Improveassembly process simplicityVSAvoidbattery pack stability
Core Design Contradiction:
Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The fixed side lugs are integrally formed with the side plate body through bending, merging two components into one. This eliminates the need for separate connection structures while providing stable attachment to the battery box, thus maintaining assembly simplicity while improving battery pack stability

Inventive Principle:
Principle #5Merging (Combining)

2Ease of manufacture

If the fixed side lug is integrally formed with the side plate body, then the forming process is simple and molding is convenient, but additional structural complexity is introduced

Engineering Contradiction:
Improveforming process simplicityVSAvoidside plate structural complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The side plate is segmented into the main body and the fixed side lugs, where the lugs are formed by bending specific portions of the body. This segmentation allows the lugs to be created through simple bending operations during molding, maintaining manufacturing simplicity while adding the necessary connection functionality

Inventive Principle:
Principle #1Segmentation

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 integral formation of the side plate and fixed side lug improves the stability and strength of the battery module, ensuring the installation stability of the entire battery pack by providing a robust connection to the battery box.

Implementation Method 1

The fixed side lug is formed by bending part of the body towards a side away from a battery

Methodology Applied
Scientific EffectBending: Deformation

Data Source

PatentEP4372877A1Battery module and battery pack
Publication Date: 2024.05.22 CALB GROUP CO LTD
  • EP4372877A1 patent drawingFigure 1~2
  • EP4372877A1 patent drawingFigure 3~4
  • EP4372877A1 patent drawingFigure 5

AI summary

The invention discloses a battery module and a battery pack. The battery module includes an end plate (220) and a side plate (100) connected to the end plate (220), forming an accommodation space (240) together with the end plate (220), and including a body (10) and a fixed side lug (20) integrally formed with the body (10). The fixed side lug (20) is formed by bending part of the body (10) towards a side away from a battery, and the fixed side lug (20) is configured to be connected to a battery box. The battery module also includes a plurality of single cells accommodated in the accommodation space (240). In the battery module provided by the invention, part of the body (10) of the side plate (100) is bent and formed to form the fixed side lug (20).