Battery Resin Applicator Nozzle for Fast, Stable Dispensing

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Solution Overview

Problem

Existing applicators for resin composition in battery assemblies are inefficient, requiring excessive time for application and prone to impact and shaking during the process, which affects the manufacturing process of battery modules and packs.

Innovation Solution

An applicator design comprising a cartridge part, mixer part, and application part with specific tube configurations and angles to control resin flow, including a discharging part with inclined surfaces and a nozzle structure for precise application, minimizing shaking and impact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If resin composition is applied using conventional applicators, then the application process can be completed, but the time required for application is excessive and process tact time is increased

Engineering Contradiction:
Improveapplication speedVSAvoidapplication time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The applicator is divided into distinct functional segments: a cartridge part for resin storage, a mixer part for combining resin components, and an application part for dispensing. This segmentation allows each part to be optimized independently, with the mixer part continuously preparing resin for application, thereby increasing overall application speed and reducing idle time.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mixer part performs preliminary mixing of resin components before they reach the application point. By continuously mixing resin in advance within the mixer part, the system ensures ready-to-apply resin is always available at the discharge end, eliminating waiting time and maintaining continuous high-speed application.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If resin composition is applied using conventional applicators, then the application can proceed, but the applicator is vulnerable to impact and shaking during the process

Engineering Contradiction:
Improveapplicator stabilityVSAvoidapplicator protection from impact
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The discharge part is designed with a storage space that acts as a buffer between the mixer part and the application point. This storage space cushions against impact and shaking by providing a reservoir that can absorb sudden movements or pressure changes, protecting the mixing mechanism and ensuring consistent resin flow despite external disturbances.

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

Solution Approach 2:

The storage space in the discharge part serves as an intermediary between the mixer part and the application environment. It isolates the sensitive mixing mechanism from external impacts and shaking, allowing the mixer to operate smoothly while the storage space absorbs and dampens external disturbances before they reach the application point.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If resin composition is applied quickly to reduce process tact time, then productivity improves, but the quality of resin application may be compromised

Engineering Contradiction:
Improveprocess tact timeVSAvoidresin application quality
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The mixer part continuously mixes resin components throughout the application process, ensuring that high-quality, well-mixed resin is constantly supplied to the application point. This continuous mixing action maintains resin homogeneity and application quality even at high speeds, eliminating the need to slow down for periodic mixing cycles.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

Resin components are mixed in advance in the mixer part before reaching the application point. This preliminary mixing ensures that resin is fully prepared and homogeneous before application begins, allowing high-speed dispensing without compromising mixing quality or resin uniformity.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4714562A1Resin composition applicator and battery assembly
Publication Date: 2026.03.25 LG ENERGY SOLUTION LTD
  • EP4714562A1 patent drawingFigure 1
  • EP4714562A1 patent drawingFigure 2
  • EP4714562A1 patent drawingFigure 3

AI summary

A resin composition applicator for applying a resin composition to at least one surface of a housing or to at least a part of at least one surface of the battery is provided. The resin composition applicator includes a cartridge unit, a mixer unit connected to the cartridge unit, and an application unit connected to the mixer unit. The application unit includes at least one application pipe provided such that the resin composition introduced from the mixer unit can pass therethrough, and a discharge unit having a storage space provided such that the resin composition introduced from the at least one application pipe is accumulated therein. The discharge unit may at least include a first surface and a second surface for forming the storage space, and be configured such that the resin composition is discharged through a space between one end of the first surface spaced apart from one end of the second surface.