EMC-ESD Vereniging

High-Voltage Instrument Augments Battery Test

High-Voltage Instrument Augments Battery Test

door C.N. Rood

Batteries are proliferating, along with the need for battery testing. A new isolated high voltage measurement instrument proves to deliver accurate and highly repeatable voltage measurements for this application.

 

Ranges from ±1 V to ±420 V

One instrument with the necessary features is the EX1402 precision voltage-acquisition instrument from AMETEK Programmable Power’s VTI Instruments brand. The instrument has three software-selectable full-scale input ranges to serve general-purpose as well as battery-specific test applications:EX1402_left_high

  • The ±1-V range can measure low-level transducer outputs and current-shunt voltages.
  • The ±10-V range can handle typical voltages found in test-and-measurement setups; it can measure individual cell voltages for battery tests.
  • The ±420-V can measure line-power voltages and the voltages of complete battery stacks.

The 16-channel EX1402 also has the resolution and sampling rate necessary for the battery test. The 24 bits/channel resolution lets you characterize various battery types, including ones with very flat discharge curves. A sample rate of 128 kS/s per channel enables the instrument to capture fast voltage spikes and transients, such as those that might occur during fault conditions or when testing a battery’s performance when subjected to pulsed loads.

The instrument’s 16 channels feature 1,000-V channel-to-channel isolation, and each channel offers 500-V channel-to-ground isolation to help you safely measure high voltages. The isolation also minimizes common-mode noise and safeguards against ground loop problems. Other features include eight isolated digital I/O channels as well as high-performance and low-latency programmable digital filters. The EX1402 also exhibits low channel-to-channel crosstalk (-115 dB typical at 1 kHz) and total harmonic distortion (-85 dB typical at 1 kHz).

 

Easy setup and reconfiguration

The EX1402 is easy to set up and reconfigure. The instrument works on DC or AC power as well as power over Ethernet. Three-conductor HDR 3POS connectors provide a secure, low-cost connection, with the grounding conductor enhancing safety and noise rejection.

The EX1402 can operate as a standalone data logger, stream data to a host computer over LXI-Ethernet, and—for critical data—do both simultaneously. Its high-resolution multifunction display can prove helpful during setup and troubleshooting, even if you plan to control the instrument remotely. The display can indicate factors such as internal PCB voltage levels and system temperature. The diagnostic information is also available remotely and can be accessed by a software-invoked self-test command before each critical measurement.

 

Scalable to meet evolving requirements

The EX1402’s 16-channel architecture enables you to simultaneously measure multiple individual cells as well as the entire battery voltage. If you require more than 16 channels, you can scale up by adding another EX1402, or you may want to add a different instrument type.

Consider, for example, that battery tests frequently require temperature measurements as well as voltage. In that case, you could add an EX1401—an EX1402 companion instrument that can make thermocouple measurements. Like the EX1402, the EX1401 has 16 isolated channels. It has input voltage ranges of ±0.01 V, ±0.10 V, ±1.0 V, and ±10.0 V, allowing it to make current-shunt measurements and cell voltage measurements in addition to temperature measurements. Like the EX1402, the EX1401 has a resolution of 24 bits per channel as well as 500-V channel-to-ground and 1,000-V channel-to-channel isolation. Its sample rate is 20 kS/s for each channel. EX1401 and EX1402 support the IEEE 1588 Precision Time Protocol (PTP) standard to enable data timestamping and fully synchronize your high-data-rate voltage and temperature data.

In addition, EX1401 and EX1402 are designed to fit seamlessly into your software environment, offering LabVIEW, IVI-COM, IVI-C, Linux, or Windows drivers. They can also operate without a driver through their support of the Representational State Transfer (REST) architecture, which lets them be controlled from any Web browser.

You can write your test programs or use VTI instruments’ EXLab turn-key data-acquisition software, which features intuitive icon-based setup and control and spreadsheet-style channel configuration. It can synchronize different data sources and enable independent sampling rates for each connected instrument. It also provides real-time online graphical data analysis, post-acquisition analysis, and data playback.

With features ranging from flexible software choices to multiple high-resolution voltage ranges, the EX1402 stands ready to meet your battery test needs. As the battery market expands and your battery test needs evolve, you can add temperature-measurement capability with the EX1401. If you need to add test capabilities for other parameters—such as strain or vibration—VTI Instruments also has solutions for you there.

 

For more information, please contact CN Rood.

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C.N. Rood

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De CN Rood groep is koploper in kennis en oplossingen op het gebied van test- en meetapparatuur. We onderscheiden ons met een persoonlijke en klantgerichte aanpak. Onze klanten zoeken vaak niet een product, maar een oplossing en wij hebben allemaal de gedrevenheid om mee te werken aan die oplossing. Wat wij het liefste doen: continu bezig zijn met de nieuwste ontwikkelingen op het gebied van test- en meetapparatuur. Nu, en in de toekomst. Want daar ligt nu eenmaal onze passie: het precies willen weten. Zo kunnen we onze klanten optimaal verder helpen.

Wij denken mee, adviseren en begeleiden onze klanten in het maken van de juiste keuze in hun test- en meetapparatuur. Mensen in verschillende sectoren vertrouwen op onze expertise en ons advies. We werken voor overheid, wetenschap, onderwijs, lucht- en ruimtevaart- en auto-industrie in Noord-Europa en de Benelux. Daaronder bevinden zich vele prestigieuze en vooraanstaande organisaties. Vanuit locaties in Zweden, Nederland en België werken meer dan zestig toegewijde professionals aan oplossingen variërend van communicatie-testapparatuur en algemene test- en meetinstrumenten tot apparatuur voor data-acquisitie, logistieke automatisering, aangevuld met consultancy, training en turnkeyoplossingen.

We hebben een historie die teruggaat tot 1938. Onze oprichter, Cornelis Nicolaas Rood, was destijds een pionier in moderne elektronica. Onze mensen bevinden zich ook anno nu graag in de frontlinie van technologische ontwikkelingen. Op onze eigen manier leveren we zo een bijdrage aan belangrijke maatschappelijke vraagstukken. Bijvoorbeeld in energietransitie, quantum computing, medische technologie, de zelfrijdende auto, de auto op zonne-energie, de energie transitie en alle andere deeptech die bijdraagt aan de schonere en betere wereld van morgen.

Daarom letten we ook op onze eigen impact op het milieu en klimaat. Aangezien wij vooral een adviserende functie hebben is onze eigen milieu-footprint gering. Vanzelfsprekend zien we wel toe op een zo duurzaam mogelijke productie van de apparatuur die wij verkopen en zorgen we voor een maatschappelijk verantwoorde bedrijfsvoering. Al onze producten kopen we uitsluitend in bij gecertificeerde fabrikanten die werken met herleidbare en verantwoorde grondstoffen. Gebruikte apparatuur wordt kosteloos opgehaald en gerecycled.

Het zijn maar een paar voorbeelden om duidelijk te maken dat we hechten aan een langetermijnvisie op de wereld om ons heen. Want juist met een geschiedenis van meer dan tachtig jaar kun je goed vooruitkijken. Daarom blijven we ook vooroplopen. Onze brede en diepe technische kennis van test- en meetapparatuur, in combinatie met onze persoonlijke connectie met onze klanten, maken ons uniek in de markt. De CN Rood groep is uw degelijke en betrouwbare kennispartner voor test- en meetapparatuur!

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The CN Rood Group is a leader in knowledge and solutions in the field of test and measurement equipment. We distinguish ourselves with a personal and customer-oriented approach. Our customers often seek not a product but a solution, and we all have the drive to contribute to that solution. What we like doing best: continuously working on the latest developments in test and measurement equipment. Now, and in the future. Because that's where our passion lies: wanting to know exactly what is going on. That way, we can help our customers in the best possible way.

We think along, advise and guide our customers in making the right choice of test and measurement equipment. People in various sectors rely on our expertise and advice. We work for government, science, education, aerospace and automotive industries in Northern Europe and the Benelux. These include many prestigious and leading organisations. From locations in Sweden, the Netherlands and Belgium, more than sixty dedicated professionals work on solutions ranging from communication test equipment and general test and measurement instruments to data acquisition equipment, logistics automation, complemented by consultancy, training and turnkey solutions.

We have a history dating back to 1938. At the time, our founder, Cornelis Nicolaas Rood, was a pioneer in modern electronics. Even today, our people enjoy being at the forefront of technological developments. In our own way, we contribute to important social issues. For instance, in energy transition, quantum computing, medical technology, the self-driving car, the solar car, the energy transition and all other deep-tech that contributes to the cleaner and better world of tomorrow.

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These are just a few examples to make it clear that we value a long-term view of the world around us. Because it is precisely with a history of more than eighty years that it is easy to look ahead. That's why we stay ahead. Our broad and deep technical knowledge of test and measurement equipment, combined with our personal connection with our customers, make us unique in the market. The CN Rood group is your solid and reliable knowledge partner for test and measurement equipment!

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