Electric vehicle batteries are comprised of a variety of materials, adhesives, welds, and component structures that require thorough testing. In addition to our wide offering of standard grips and fixtures, Instron has also developed custom fixtures specifically designed to improve the efficiency and repeatability of testing battery materials and components. Our Engineered Solutions Group can accommodate quick turnarounds on battery fixture designs to fit specific needs. To learn more about the latest EV battery testing applications, visit our Electric Vehicle Battery Testing page.

250 N and 50 N Pneumatic Side Action Grips

Pneumatic Side Action Tensile Grips
250 N Grip (Catalog No. 2712-052) and 50 N Grip (Catalog No. 2712-051)

Instron’s pneumatic side action grips feature a versatile design for testing various battery materials and components. They are most commonly used for testing foil, separator film, and various welds used in the production of batteries. Featuring adjustable clamping pressure and quick-change jaw faces, these grips can be adapted to test a wide variety of specimens. 

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Precision Specimen Loader for Thin Films and Foils
Catalog No. 2701-240, 2701-241, 2701-242, 2701-243, 2701-244

The precision specimen loader improves alignment and the setup process for testing thin films and foils, resulting in reduced variation in test results and improved safety and ergonomics. Available for our 250 N pneumatic side action tensile grips (catalog no. 2712-052), this device uses a detachable alignment clip and linear rail to guide the specimens into the grips. The precision specimen loader is available in multiple sizes to accommodate a wide range of specimen dimensions.

For more information on the importance of specimen alignment for tensile testing of thin films and foils, read our white paper that covers the results of experiments designed to determine the impact specimen alignment has on results.

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Screw Side Action Tensile Grips
2710-100 Series

Instron’s advanced screw side action grips offer similar versatility to pneumatics, without the use of an adjustable or constant gripping pressure. These grips are an ideal solution when testing components and welds due to their increased jaw face separation and allowable offset.

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Weld Test Fixture
Catalog No. CP132001

This custom-made prismatic battery weld test fixture features a cantilever style hook and alignment fixture for testing the cumulative welding of anode/cathode tabs to their respective current collector. It is also paired with a crosshead extension to provide more space behind and around the specimen/alignment device when using a single column frame. By using the alignment fixture, an operator can ensure the prismatic cell is properly gripped in an upper grip. Fixturing can also be easily swapped out to accommodate different sized prismatic cells and/or welds. This is done by replacing the specimen alignment fixture and lower hook, all of which can be acquired separately, as needed.

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Pneumatic 90° Peel Fixture
Catalog No. CP134660

The pneumatic 90° peel fixture was developed specifically for electrode adhesion testing. This peel fixture is designed to help an operator align and clamp down a specimen quickly and consistently while ensuring that a 90° angle can be maintained from start to finish. With its improved clamping and specimen alignment aides, the fixture provides greater repeatability, throughput, and reduced operator involvement over a standard manually-controlled and set up peel fixture. All of this makes the pneumatic version a preferred option over a standard 90° peel fixture with manual adjustments and clamping.

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90 Degree Peel Fixture

90° Angle Peel Fixture
Catalog No. 2820-035

The 90° peel test fixture consists of a bearing-mounted sled that is linked to the testing machine’s crosshead by a cable and pulley system. This fixture has a T-slotted sled that allows the substrate clamps, which secure the substrate to the sled, to adjust to a variety of substrate widths.

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Tack Test Fixture
Catalog No. CP131999

Designed for ease of specimen preparation and throughput, this Tack Test Fixture is optimized for testing the adhesion strength of electrodes to their current collector. The contact area of the tack can be designed to various sizes as needed. It is designed with 5 specimen locations and able to perform 5 consecutive tests without the need for additional specimen preparation in between each test. The upper and lower fixtures consist of lightweight, separate parts to simplify installation and cleaning. The upper fixture is also spherically seated and lockable to ensure parallelism between both fixtures during testing.

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Flexure Fixtures

Instron offers a wide range of flex / bend fixtures for specimens of only a few millimeters in length up to 600 mm and for loads of a few newtons to several kilonewtons. 3 and 4-point bend tests of raw materials, battery materials, and cells are all possible using standard and custom fixtures that can incorporate displacement sensors and be mounted on all frame types.

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Bending / Hemming Test Fixture to VDA 238-100: 2020
Catalog No. CP130604

The CP130604 fixture has a maximum force capacity of 20 kN and is designed specifically for tight radius bend testing of sheet metals in accordance with VDA 238-100. The punch radius, roller diameter, and roller distance are constrained to reduce lab-to-lab variability. This fixture is used to evaluate formability and crash behavior of the high-strength metal casings that house and shield EV batteries.

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Battery Swell Testing Platens

Battery Swell Testing Platens
Catalog No. CP136688

These custom-made battery testing platens are designed for measuring compressive loads, swelling, and compressive strain of batteries. They are designed with 4 integrated LVDT mounting locations and fit with an integrated spherical seat capable of locking to provide parallelism or being left unlocked to determine swelling in separate regions during charging and discharging. The lower platen also has a threaded hole pattern for mounting specimen guides in the event of stack testing for multiple battery cells. The platens are temperature rated from -40° to 150° C to allow for testing inside an environmental chamber.

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High Accuracy Digital Displacement Sensor
Catalog No. CP134297

This digital version of a LVDT provides a repeatable and highly accurate method of displacement measurement for a variety of tests on battery materials, components and assemblies. The sensor is easy to set up, is automatically recognized by the software and can provide a high precision and localized displacement or strain measurement. It can be used in tension, compression and flex tests and many other specialized tests such as to measure cell expansion during charging/discharging cycles.

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AVE 2 Non-Contacting Video Extensometer

Non-Contacting Video Extensometer

Instron’s AVE2 video extensometer provides a repeatable and highly accurate method of strain measurement for various tests on battery materials and/or components. This fully-integrated extensometer easily adapts to the normal fluctuations of environmental conditions in your lab, including thermal and lighting variations. In addition to ambient testing, it can be used with temperature chambers and fluid baths.

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Puncture Fixture
1 mm Probe (Catalog No. CP132292) and 0.8 mm Probe (Catalog No. CP105780)

Designed in accordance with EN 14477 for puncture testing of separator film and other flexible materials, this fixture provides a lower clamping mechanism paired with an upper probe of either 0.8 mm or 1 mm in diameter. The lower fixturing includes guidance for the probe and the means to hold a specimen taut for each test.

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Environmental Chamber

Environmental Chambers

Materials, cells, modules, and packs used in EV batteries can perform differently under varying environmental conditions. A testing chamber integrated with the Instron test frame allows specimens to be tested under a variety of environmental conditions while under load.

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Coefficient of Friction Fixture

Coefficient of Friction Fixture
Catalog No. 2810-005

Instron’s coefficient of friction fixture measures the static and kinetic coefficient of friction of plastic film and sheeting. This fixture is commonly used to measure the friction forces of separator film material used in batteries.

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Thermocouple Conditioner

Thermocouple Conditioners
Catalog No. CP132303

This thermocouple Signal Conditioner has been modified with wiring to Instron’s sensor conditioner module to allow for a live data capture and display of temperature for testing. It comes factory programed to work with type J and K thermocouples and configured for -100° to 350° C, but can be changed by the user depending on the measurements needed.

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Barcode Scanner

A standard USB barcode and QR code scanner allows you to seamlessly enter sample or specimen information into Bluehill® Universal testing software. Simply create a barcode or QR code, inclusive of the tab function, and information can be added in any text or number input fields.

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Bluehill Central
Lab Management Software

Bluehill Central software is a laboratory management tool that enables centralized, remote management of Bluehill Universal software applications associated with multiple Instron test frames. The software allows you to remotely manage all Bluehill Universal users, test templates, results, file revision approvals, and audit trail data from multiple Instron systems.

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Busbar Clamping Stage

Busbar Clamping Stage
Catalog No. CP128348

Designed for clamping busbar and other battery components, this fixturing allows for adjustable sizing and clamping force for testing various welds used in the production of batteries.

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