Battery Box Buffer Structure for Collision Energy Absorption

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Solution Overview

Problem

Batteries are prone to damage when subjected to collisions or scratches, affecting their operating performance, safety, and service life.

Innovation Solution

A battery design incorporating a buffer structure protruding from the side wall of the battery box that absorbs collision energy, reducing the force transmitted to the box and enhancing safety and reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If the battery box is made with thin walls to reduce weight and material usage, then the weight and cost are reduced, but the box becomes more susceptible to damage from collisions and scratches

Engineering Contradiction:

Improvebattery weightVSAvoidcollision damage susceptibility

Core Design Contradiction:

Weight of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent applies beforehand cushioning by providing a buffer structure that protrudes from the side wall of the battery box. This buffer structure is positioned in advance to intercept and absorb collision forces before they reach the battery cells, cushioning the box against external impacts and scratches while allowing the box walls to remain thin for weight reduction

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If a buffer structure is added to protect the battery from collisions, then the safety and reliability are improved, but the device complexity and volume increase

Engineering Contradiction:

Improvebattery safetyVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs a buffer structure with a flexible or deformable design that can elastically deform during collisions to absorb impact energy. This flexible buffer structure provides effective protection against collisions while maintaining a relatively simple overall configuration and avoiding excessive volume increase

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The buffer structure is designed as a segmented or localized component that protrudes only from specific side walls of the battery box where collision protection is most needed, rather than enclosing the entire battery. This segmentation approach provides targeted protection while minimizing the addition of structural complexity and volume

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 buffer structure effectively mitigates damage to the battery box and cells by absorbing collision energy, improving safety and extending the battery's service life.

Implementation Method 1

the buffer structure can absorb part of the collision energy

Methodology Applied

Scientific EffectEnergy absorption: Deformation

Implementation Method 2

the force transmitted to the box becomes smaller

Methodology Applied

Scientific EffectForce transmission reduction: Damping

Data Source

PatentUS20250388097A1Battery and vehicle

Publication Date: 2025.12.25 CONTEMPORARY AMPEREX TECHNOLOGY CO LTD

AI summary

A battery and a vehicle are provided. The battery includes: at least one battery cell, a box, and a buffer structure. The battery cell is arranged in the box. The buffer structure is fixedly connected to the box, and the buffer structure protrudes out of a side wall of the box.