Retractable Injection Nozzle With Baffle to Prevent Electrolyte Dripping
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Solution Overview
Problem
The residual electrolyte solution in battery production tends to adhere to the injection nozzle, leading to pollution and potential damage due to crystallization, which affects the production process and product quality.
Innovation Solution
An injection nozzle design featuring a movable injection pipe and a baffle mechanism that covers the outlet when not in use, utilizing a spring for automatic restoration, along with a baffle that blocks residual liquid and a limiting cylinder for stability, to prevent adhesion and dripping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed injection nozzle is used, then the structure is simple, but residual electrolyte adheres to the nozzle causing pollution
Solution Approach 1:
The injection pipe is made movable instead of fixed, allowing it to retract into the nozzle body after injection. This dynamic design prevents residual electrolyte from remaining on the outer surface, eliminating the pollution problem while maintaining structural simplicity through the retractable mechanism.
Solution Approach 2:
The harmful part (injection pipe with residual electrolyte) is extracted from the stationary structure by making it movable and retractable. The pipe is pulled out of the nozzle body during injection and then retracted afterward, separating the injection function from the permanent external structure, thus preventing continuous pollution.
2Ease of operation
If the injection pipe extends outside the nozzle, then injection is enabled, but residual liquid drips onto external objects
Solution Approach 1:
The injection pipe dynamically changes position between extended (during injection) and retracted (after injection) states. This ensures the pipe only exposes outside when needed for injection, and retracts afterward to prevent residual liquid from dripping onto external objects or equipment.
Solution Approach 2:
The nozzle body structure preliminarily prevents residual liquid dripping by providing a contained channel that guides the pipe. The pipe is confined within the nozzle body's protective structure, and only extends when injection is required, preventing premature or uncontrolled liquid discharge.
3Object-generated harmful factors
If the injection pipe is movable, then residual liquid adhesion is reduced, but the device complexity increases
Solution Approach 1:
A simple movable mechanism is implemented where the injection pipe can slide in and out of the nozzle body along a guided channel. This basic dynamic structure achieves the goal of reducing residual liquid adhesion without requiring complex mechanical systems, maintaining ease of manufacture and operation.
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
Reduces pollution by preventing residual electrolyte from adhering to the nozzle and other objects, simplifies the injection process, and enhances maintainability, especially for corrosive liquids.
Implementation Method 1
a spring, which is configured to elastically deform when the injection pipe moves downward relative to the body
Data Source
AI summary
Some embodiments of this application provide an injection nozzle and an injection apparatus containing same. The injection nozzle includes a body, an injection pipe, and a baffle. The body contains a channel arranged along a height direction of the injection nozzle. A first outlet is disposed at a lower part of the channel. The injection pipe is threaded through the channel in a manner of reciprocating movement along the height direction. The baffle is connected to the body and configured to cover the first outlet when a lower end portion of the injection pipe is higher than the first outlet, and be propped open by the injection pipe when the lower end portion of the injection pipe is lower than the first outlet.