Floating Liquid Cooling Plug-In Assembly for Vibration Stability

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Solution Overview

Problem

Existing liquid cooling plug-in members for battery packs suffer from outflow and splashing of liquid due to insufficient float, caused by vehicle body vibrations and other factors.

Innovation Solution

A liquid cooling plug-in assembly featuring a first fixed plate, a floating plate, at least one first elastic member, and a plurality of plug-in members, where the plug-in members are connected to the floating plate, and the floating plate is in floating connection with the first fixed plate via the first elastic member, enhancing the float and stability of the connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the liquid cooling plug-in members are rigidly connected to the battery pack, then the connection stability is improved, but the device cannot adapt to vehicle body vibrations and causes liquid outflow and splashing

Engineering Contradiction:
Improveconnection stabilityVSAvoidadaptability to vibrations
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The plug-in member is designed with a floating connection structure that includes a floating portion capable of dynamic movement relative to the battery pack. This dynamic structure allows the plug-in member to adapt to vehicle body vibrations while maintaining reliable liquid cooling connections, preventing liquid outflow and splashing during vehicle operation

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The floating portion is designed with specific dimensional parameters (length, width, thickness) that enable it to move within a controlled range to absorb vibrations. The elastic member's stiffness and the floating portion's geometry are optimized to provide sufficient floatation while maintaining connection stability under vibrational conditions

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the plug-in member is rigidly fixed, then the liquid cooling connection is stable, but the float is insufficient causing liquid outflow during vibrations

Engineering Contradiction:
Improveliquid cooling connection stabilityVSAvoidliquid outflow and splashing
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The plug-in member incorporates a floating portion that can dynamically move to maintain proper connection under vibrational conditions, providing sufficient float to prevent liquid outflow while ensuring stable liquid cooling connection during vehicle operation

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The elastic member is pre-installed between the plug-in member and battery pack to provide beforehand cushioning against vibrations. This elastic element absorbs vibrational energy before it can cause liquid outflow, while maintaining the liquid cooling connection stability throughout vehicle operation

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 solution effectively prevents the outflow and splashing of liquid, enhances the stability of the connection, and prolongs the service life of the liquid cooling plug-in device by ensuring a large float and secure attachment of the plug-in members.

Implementation Method 1

the floating plate and the first elastic member are both located in the movement cavity, and the floating plate is in floating connection with the first fixed plate by means of the first elastic member

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the plurality of plug-in members are in floating connection with the first fixed plate by means of the first elastic member, so that the plug-in member has a large float

Methodology Applied
Scientific EffectElastic potential energy storage: Elasticity

Data Source

PatentEP3904748B1Liquid cooling plug-in assembly, liquid cooling plug-in apparatus, and battery pack assembly
Publication Date: 2025.01.29 AULTON NEW ENERGY AUTOMOBILE TECHNOLOGY CO LTD
  • EP3904748B1 patent drawingFigure 1
  • EP3904748B1 patent drawingFigure 2
  • EP3904748B1 patent drawingFigure 3

AI summary

A liquid cooling plug-in assembly (1), a liquid cooling plug-in apparatus, and a battery pack assembly. The liquid cooling plug-in assembly (1) comprises a first fixed plate (11), a floating plate (12), at least one first elastic piece (14), and a plurality of plug-in pieces (13); the plurality of plug-in pieces (13) are all connected to the floating plate (12); a movement cavity (111) is formed in the first fixed plate (11); the floating plate (12) and the first elastic piece (14) are both located in the movement cavity (111), and the floating plate (12) is in floating connection with the first fixed plate (11) by means of the first elastic piece (14). The liquid cooling plug-in apparatus comprises a matching plug-in assembly (2) and said liquid cooling plug-in assembly (1), and the matching plug-in assembly (2) is detachably connected to the liquid cooling plug-in assembly (1). The battery pack assembly comprises said liquid cooling plug-in apparatus. The floating plate (12) is in floating connection with the first fixed plate (11) by means of the first elastic piece (14), so that the plug-in pieces (13) have a large floating amount, the connection stability is greatly enhanced, and phenomena of an outflow and splashes of a liquid in the plug-in pieces (13) are effectively avoided.