Automatic Vacuum Chamber Helium Leak Testing Equipment for Battery Enclosures

Product Introduction

Automated Leak Inspection for Battery Enclosures

Battery enclosures often incorporate welded joints, cover interfaces, sealing surfaces, connectors, and other potential leakage paths. A consistent inspection process helps manufacturers identify sealing defects before products move to subsequent assembly or delivery stages.​
This vacuum chamber helium leak testing system is intended to help manufacturers establish a repeatable inspection process rather than rely solely on manual checks or simple pressure-decay measurements.​
The product uses a vacuum chamber and helium tracer-gas detection arrangement. Under the configured test procedure, the chamber and workpiece are prepared for inspection, the required vacuum and helium conditions are established, and the system evaluates the measured leak signal against the configured acceptance threshold.​
The actual test sequence depends on the equipment configuration and the customer's workpiece design. Detailed process logic, fixture interfaces, and acceptance criteria should be confirmed during technical evaluation.​

Why Choose Vacuum Chamber Helium Leak Testing?

Helium is used as a tracer gas because its physical properties allow a dedicated detector to identify small quantities of gas passing through a leakage path. Vacuum-based testing can provide sensitive, repeatable measurements when the test arrangement, background conditions, calibration, and workpiece preparation are properly controlled.​
For battery enclosure manufacturers, this approach can support:​

• Detection of leakage in sealed housings and enclosure assemblies.​
• Quantitative evaluation against a defined leak-rate limit.​
• Consistent inspection conditions across production batches.​
• Automatic test execution with reduced dependence on manual operation.​
• Process records and quality-control procedures when the corresponding data functions are configured.​

The final achievable sensitivity for a particular product depends on the complete test system, the test method, the workpiece's internal volume, surface conditions, background helium, and the customer's acceptance criteria.

Product Features

Automatic Product Sealing

The equipment specification identifies automatic product sealing. This helps establish a consistent test interface and reduces repetitive manual intervention during the inspection cycle.

Vacuum Chamber Testing

The system includes one vacuum chamber. The specified chamber vacuum is ≤0.1 mbar, while the specified product vacuum is ≤30 mbar. These are separate parameters and should not be treated as interchangeable.

Adjustable Test Pressure

The specified test-pressure range is 0–0.5 MPa, adjustable. The appropriate setting must be selected according to the actual test configuration and the approved product test procedure.

Adjustable Helium Concentration

The helium concentration is adjustable from 50% to 90%, allowing the process to be configured around the specified test method and production requirements.

High-Sensitivity Leak Detection

The equipment specification lists a minimum detectable leak rate of 1.0 × 10⁻⁷ mbar·L/s. This is the stated equipment specification, not a guarantee that every workpiece will achieve that sensitivity under every test condition.

Technical Specifications

For further specifications regarding the equipment, please contact our service team.

Test Objects and Applications

The equipment is intended for battery enclosure airtightness inspection. The following applications may be considered subject to fixture compatibility, workpiece volume, test-port design, and the agreed leak-rate limit.

EV Battery Enclosures and Housings

Inspect sealed battery housing assemblies for leakage paths that may affect enclosure protection and product reliability.

Battery Pack Enclosure Assemblies

Evaluate enclosure sealing after welding, joining, cover installation, or other sealing processes, where the product design permits the selected test method.

Battery Cover and Housing Interfaces

Inspect cover joints, sealing interfaces, and other enclosed boundaries that can be connected to the defined test arrangement.

Welded Battery Enclosure Structures

Evaluate leakage associated with weld seams and joined metal structures. Actual defect detectability depends on the leakage path and test conditions.

Sealed Battery-Related Components

With appropriate fixtures and validated process settings, the system may be evaluated for compatible sealed components used in battery assemblies.

Customized Enclosure Designs

For new battery enclosure designs, our engineering team can review workpiece drawings, sealing structures, test ports, cycle-time targets, and acceptance limits before proposing a suitable test arrangement.

The exact compatible workpiece range should be confirmed before ordering. This is especially important for large enclosures, complex internal cavities, multiple independent sealing zones, and products that require separate testing of individual interfaces.

Comparison with Common Leak-Testing Approaches

The best method depends on the workpiece, acceptable leakage rate, throughput target, operating cost, and customer quality requirements. Helium testing is not automatically the most economical choice for every product.

After-Sales Support

Test systems are long-term production assets; support services for them extend beyond initial delivery to encompass ongoing operation, maintenance, and the assurance of process stability.

Depending on the agreed scope of supply, our services may include:

• Pre-sales technical consultation and application assessment.
• Confirmation of equipment configuration and tooling.
• Guidance on installation and commissioning.
• Training for operators and maintenance personnel.
• Technical troubleshooting and coordination of spare parts.
• Ongoing support for process adjustments and routine maintenance.

Specific details regarding the scope of service, response arrangements, warranty terms, and on-site service schedules will be clearly defined in the technical agreement or contract.

FAQs

Q1: What is vacuum chamber helium leak testing equipment used for?

It is used to inspect the sealing performance of compatible enclosed components by detecting helium passing through leakage paths under a defined test procedure. This equipment is intended for battery enclosure and related airtightness inspection applications.

Q2: What is the minimum detectable leak rate of this equipment?

The supplied technical specification lists a minimum detectable leak rate of 1.0 × 10⁻⁷ mbar·L/s. Actual measurement performance depends on test conditions, calibration, background helium, the workpiece, and the validated test arrangement.

Q3: What is the production cycle time?

The specified production cycle is ≤60 seconds. The actual cycle should be confirmed using the customer's workpiece and required test process.

Q4: What helium concentration can be used?

The specified helium concentration is adjustable from 50% to 90%. The required concentration should be selected according to the approved test procedure.

Q5: What vacuum levels are specified?

The equipment specification lists a vacuum chamber pressure of ≤0.1 mbar and a product vacuum of ≤30 mbar. These values ​​refer to different parts of the system and should be confirmed during technical review.

About Us

We are a developer and manufacturer specializing in industrial testing solutions. Our operations encompass engineering design, equipment manufacturing, and application-specific configuration, all aimed at helping clients establish practical, repeatable quality control processes.

Our equipment is designed to integrate seamlessly with actual production workflows for battery housing leak testing. When selecting a long-term solution, critical factors such as testing sensitivity, cycle times, fixture compatibility, helium consumption, and maintenance requirements are all taken into account.

Clients work directly with our engineering and production teams to discuss requirements and clarify technical details prior to ordering, ensuring professional support throughout the entire implementation process.

As a direct manufacturer, we are committed to clear technical communication, practical equipment solutions, and reliable service—moving away from one-size-fits-all sales approaches.