THT Battery Newsletter - March 2021

March 2021 Newsletter Battery Applications Latest developments at THT

Conferences & Exhibitions

Due structural changes in our operations THT have decided to end distribution activities via RT Instruments in North America. With effect from 5th April 2021 THT Inc will handle all responsibilities for installation, training, manufacturer’s warranties and ongoing customer support.

The restrictions on travel and social distancing resulting from the COVID-19 pandemic continue to effect on the number of conferences and exhibitions we can attend in 2021. Our online meeting calendar will be updated as new dates are confirmed.

We are in the process of setting up a new office in Clarksburg, NJ. In the meantime USA customers can continue to place orders directly with THT Inc., Zionsville Indiana . info@thtusa.com +1 609-454-6062 For telephone support, please call our UK head office Tel: +44 1908 646800.

Job Vacancy - North America We are looking to recruit a new Regional Manager.

With support from the UK, this person will manage our activities in North America, leading sales, business development, technical support and installations. This is an exciting opportunity to become a senior employee within THT.

Our Chinese team are preparing for the first major exhibition of the year. The China International Battery Fair: CIBF2021 is set to take place in Shenzhen March 19-21. Visit Hall 1, stand #T058 to learn more about THTs products.

THT are also booked to exhibit at the Battery Cells & Systems Expo, 7-8th July NEC, Birmingham, UK. Visit us at stand 18-415.

Webinars Over the last year we have increased our online webinar programme. We hosted a successful Virtual Battery Users Meeting last October. The event attracted 70 delegates - if you were unable to attend contact us for a recording of the presentations.

Future webinars will be listed on the dedicated section of our website.

Ideally, we are looking for someone who has experience with our instruments and how they are applied.

Latest Battery ARC Publications

If you want to know more, please get in touch at info@thtuk.com

View the list in full here and feel free to email us any recent references that we have missed!

We are pleased to see so many papers published by our ARC users.

Latest publications come from.

• Sun Yat-sen University, Guangzhou, China • CATARC, Tianjin, China • University of Münster, Germany • AllCell Technologies, USA

March 2021 Newsletter Battery Applications ARC RDCS: Rapid Data Collection System

ARCCal+ v2.0.1 Free Update

For users demanding increased data collection speeds, an upgrade option for new and existing EV and EV+ARC systems is now available.

The Rapid Data Logging Device (RDCS) connects to a separate laptop and is triggered by the ARC due to Temperature or Temperature Rate thresholds. This ensures data size is kept manageable because only the rapid part of the reaction is recorded.

One pressure channel, one voltage channel and four temperature channels can be recorded at logging rates of up to 1kHz. This is useful for thermal runaway pressure measurements. The pressure test can show a pressure wave “spike” during cell decomposition which is not always detectable with slower data logging rates The hardware comprises of • Electronic controller / data logger • Labview based interface for test setup and data acquisition •3000psi pressure transducer (customer specified range also available) • 4 x thermocouple inputs with N-type thermocouples • All necessary cabling • System controller (notebook PC Intel Processor, Windows 10)

The latest version of ARCCal+ is now available for download to all THT ARC users.

The update includes access to more Temperature and Pressure plots, with choice of either linear or logarithmic scales. The TMR prediction feature has also been improved for ease of use. Read the full release notes here Download instructions: ARCCal+ requires Windows 64-bit, Windows 7 and above.

Email us to request your copy please include you instrument model and serial number.

Request Download Link for ARCCal+

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March 2021 Newsletter Battery Applications Sample Testing THT Sample Testing Lab

The findings from lab testing provide feedback into R&D and production to improve the equipment we make and make sure it is always suitable for the task. THT is continuing to work to address these challenges.

In our lab, as well as four ARC systems, we have an IBC for cylindrical cells, a large temperature chamber, 24 cycler channels, a refrigerated circulator, a high-speed camera and various auxiliary measurement devices. These can be used in combination with the ARC or separately depending on the testing requirement. If you have any specific work related to battery safety or thermal analysis, please contact us and we can see how we can help.

THT’s testing laboratory has some new equipment to facilitate different types of battery thermal analysis. On the ARC-front, customer requirement is focused heavily on calorimetry with pressure measurement and gas analysis on large cells. Our gas analysis partner lab also has a wide range of analytical instruments to match the complex range of gases which can be vented from a cell decomposition.

These safety tests are not easy to do, but the lab staff have been refining the test procedure to ensure successful, repeatable tests can be carried out. The larger the cell, the more difficult it becomes to thermally characterise it with a calorimeter. Fundamentally, the challenge of thermal control increases in complexity as the size of the calorimeter chamber increases. Add to this the fact that the larger batteries store a huge amount of energy which is released in a thermal runaway, meaning the system also has to be safe and durable.

eShop Our recently updated website allows quick purchase of ARC spares including battery holders and replacement thermocouples.

Register on www.arcspares.com to view price information and place an order.

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UK • USA • India • China Distribution Worldwide Head Office 1 North House, Bond Avenue, Bletchley MK1 1SW t: +44 1908 646800 e: info@thtuk.com US Office THT Inc t: +1 609 454 6062 e: info@thtusa.com

India Office KAN-THT (India) Pvt Ltd t: +91 11 4701 0775 e: info@kan-tht.com

China Office Thermal Safety Technology t: +86 21 6114 0501 e: info@thermalsafetytechnology.com