Adjustable Guide Mechanism for Battery Weighing Accuracy

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Solution Overview

Problem

Traditional liquid injection devices for batteries face issues with weighing accuracy due to battery shaking during transportation and are often model-specific, leading to increased weighing errors and the risk of damage to the weighing mechanism.

Innovation Solution

A liquid injection device with a conveying mechanism, weighing mechanism, and guide mechanism that includes adjustable guide plates to secure the battery in place, allowing for precise weighing without model changes, and a lifting mechanism to transfer the battery to the weighing platform, reducing shaking and errors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the weighing mechanism is arranged below the conveying mechanism with lifting mechanism for transfer, then the battery damage risk to weighing mechanism is reduced, but the battery shaking during up-down motion increases weighing error

Engineering Contradiction:
Improveprotection of weighing mechanismVSAvoidweighing accuracy
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The guide mechanism acts as an intermediary between the conveying mechanism and weighing mechanism. It includes guide plates that constrain the battery's lateral movement and a power member that controls the guide plates' positioning. This intermediary structure stabilizes the battery during transfer, reducing shaking-induced weighing errors while maintaining the protective arrangement of the weighing mechanism below the conveying mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If the liquid injection device is designed for a specific battery model, then the weighing mechanism can be optimized for that model, but model change operations are required when weighing different battery models

Engineering Contradiction:
Improveweighing precision for specific modelVSAvoidcompatibility with different battery models
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The guide mechanism incorporates a power member that enables dynamic adjustment of the guide plates' positions along the width direction. This allows the device to adapt to different battery models by adjusting the guide plate spacing, maintaining weighing precision across multiple models without requiring model change operations or reconfiguration of the entire weighing system.

Inventive Principle:
Principle #15Dynamics

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 device is compatible with different battery models, reduces weighing errors significantly, and enhances production efficiency by eliminating the need for model changes, while ensuring stable battery positioning during weighing.

Implementation Method 1

a power member, fixedly connected to the second guide plate for driving the second guide plate to move relative to the first guide plate along the width direction

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Implementation Method 2

the lifting mechanism is configured to generate relative motion between the conveying mechanism and the weighing mechanism, so that the battery on the conveying mechanism is transferred to the weighing mechanism

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Implementation Method 3

the weighing mechanism supports the battery and weighs the battery

Methodology Applied
Scientific EffectGravitation: Gravitation

Data Source

PatentEP3796421B1Liquid injection apparatus
Publication Date: 2022.04.20 CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
  • EP3796421B1 patent drawingFigure 1
  • EP3796421B1 patent drawingFigure 2
  • EP3796421B1 patent drawingFigure 3

AI summary

The present invention provides a liquid injection device, including a conveying mechanism (1), a weighing mechanism (2), a lifting mechanism (3) and a guide mechanism (4). The weighing mechanism (2) is positioned below the conveying mechanism (1). The lifting mechanism (3) is configured to transfer a battery on the conveying mechanism (1) to the weighing mechanism (2). The guide mechanism (4) includes a first guide plate (41), a second guide plate (42) and a power member (43). A distance between the second guide plate (42) and the first guide plate (41) may be adjusted through the power member (43), so that the liquid injection device may be compatible with batteries with different models. It is unnecessary to perform model change operation when the battery is changed, thus improving production efficiency. Since a gap between the second guide plate (42) and the first guide plate (41) forms a guide channel in a length direction (L) of the battery when the conveying mechanism (1) conveys the battery, the guide mechanism (4) may limit the battery in a width direction (W), thereby preventing the battery from being deviated towards two sides of the width direction (W) in the conveying process. The battery is fixed by the guide mechanism (4) when being weighed by the weighing mechanism (2), so that battery shaking is avoided and weighing error is reduced.