Battery Electrolyte Injection Alignment for Accurate Nozzle Butting

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Solution Overview

Problem

The accuracy of butting the liquid outlet nozzle to the liquid injection port of a battery is a challenge in the battery manufacturing process, affecting the success rate of electrolyte injection and potentially causing damage.

Innovation Solution

A liquid injection device with a battery clamp, position adjustment mechanism, and detection apparatus to ensure precise alignment of the battery within the clamp, allowing for accurate butting and injection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the liquid outlet nozzle is manually butted to the liquid injection port, then the operation is simple, but the butting accuracy is low affecting injection success rate

Engineering Contradiction:
Improvebutting accuracyVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical butting operations with an automatic positioning system that uses visual recognition (cameras) and automated adjustment mechanisms to achieve precise alignment between the liquid outlet nozzle and liquid injection port, eliminating manual operation while improving accuracy

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system performs self-positioning and self-adjustment through automated detection and correction mechanisms, where the device automatically identifies misalignment and adjusts its components to achieve accurate butting without requiring external manual intervention

Inventive Principle:
Principle #25Self-service

2Manufacturing precision

If the battery position is not adjusted, then the operation is fast, but the liquid injection accuracy is poor causing potential damage

Engineering Contradiction:
Improveliquid injection accuracyVSAvoidoperation efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The system performs preliminary detection and positioning of the battery before the liquid injection operation, using cameras and positioning mechanisms to ensure accurate alignment in advance, which prevents injection errors while maintaining efficient workflow

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system uses real-time detection and feedback mechanisms where sensors and cameras monitor battery position, and the system automatically adjusts based on detected deviations to ensure accurate injection while maintaining high throughput

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If automatic detection and adjustment mechanism is added, then the butting accuracy is improved, but the device complexity increases

Engineering Contradiction:
Improvebutting accuracyVSAvoiddevice complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent integrates multiple functions into unified components, where the positioning system serves both detection and adjustment purposes, and the control system manages multiple operations (detection, positioning, injection) through a single integrated controller, reducing overall system complexity despite added capabilities

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Improves the accuracy of butting and reduces operational inefficiencies by enabling automatic detection and adjustment of battery position, enhancing the efficiency and reliability of the electrolyte injection process.

Implementation Method 1

a detection apparatus, the detection apparatus being configured to be capable of detecting whether the battery put in each of the battery receiving grooves is located at each of the set positions

Methodology Applied
Scientific EffectPosition detection:

Implementation Method 2

the position adjustment mechanism being configured to be capable of pressing the battery from top down such that the battery moves to the set position within the battery accommodating groove

Methodology Applied
Scientific EffectGravitational force: Gravitation

Implementation Method 3

a liquid injection mechanism, the liquid injection mechanism being configured to be capable of butting to a liquid injection port of the battery located at the set position and performing a liquid injection operation of injecting an electrolyte into the battery

Methodology Applied
Scientific EffectFluid injection:

Data Source

PatentEP4657649A1Electrolyte injection device, battery production line, and electrolyte injection method
Publication Date: 2025.12.03 CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
  • EP4657649A1 patent drawingFigure 1
  • EP4657649A1 patent drawingFigure 2
  • EP4657649A1 patent drawingFigure 3

AI summary

A liquid injection device, a battery (100) production line, and a liquid injection method belong to the technical field of battery (100) manufacturing. The liquid injection device comprises a liquid injection apparatus (1), and the liquid injection apparatus (1) comprises: a battery clamp (11), the battery clamp (11) being provided with at least one battery (100) accommodating groove, and the battery (100) accommodating groove having a set position therein; a position adjustment mechanism (12), the position adjustment mechanism (12) being configured to be capable of adjusting a battery (100) that has been put in the battery (100) accommodating groove and not located at the set position to the set position; and a liquid injection mechanism (13), the liquid injection mechanism (13) being configured to be capable of butting to a liquid injection port of the battery (100) located at the set position, and performing a liquid injection operation of injecting an electrolyte into the battery (100). For a battery (100) that is not located at the set position, position adjustment is performed with the position adjustment mechanism (12) such that the battery (100) moves to the set position. Since the position of the battery (100) is corrected, the liquid injection mechanism (13) can be accurately butted to the liquid injection port of the battery (100). Therefore, the liquid injection device, the battery (100) production line, and the liquid injection method enable improvement in the accuracy of butting of the liquid injection mechanism (13) to the liquid injection port of the battery (100).