Lithium

Weiss Umwelttechnik GmbHSimulationsanlagen Messtechnik

The Way to a Mobile Future Temperature and Climate Test Systems for Lithium-Ion Batteries

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Energy for a mobile future. . .

Mobile energy supply has longsince become standard and evenindispensable in many areas.

Whether we are talking about mo-bile phones, laptops or the worldof digital cameras, where woulddesign and function be without theinternal workings of energy stor-age systems?

Given the fact that there is only alimited supply of fossil energysources, it is becoming increasinglyimportant to use new techniquessuch as hybrid vehicles for mobilityon the road.

Latest developments showcase hy-brids as a combination of an inter-nal combustion engine as the mainenergy source and an electrical ma-chine with a storage medium in theform of a battery, fuel cell orSuperCups.

Cars driven solely with electricitywill most likely be the next step inautomobile development.

Engineers and designers fromWeiss Umwelttechnik have put theirheads together with the key devel-opers in the automobile industry todevelop test systems. The idea isto test these new technologies un-der conditions as close to reality aspossible to meet the challenges fora safe future.

The safety equipment on these testsystems keep risks to a minimumwhen testing intentionally passesthe limits of normal use.

Existing systems mostly use nickel-metal hydride batteries, althoughlithium-ion batteries have longsince become the standard for mo-bile phones and notebooks.

The lithium-ion battery is also asource of energy on track for thefuture for hybrid drive due to itshigh cell voltage, power and ener-gy density. They have the advan-tage of thermal stability, a constantlevel of voltage over the dischargeperiod and the fact that it knowsno memory effect.

But safety for customers and theenvironment is also at the top ofthe agenda for this future genera-tion of cars. This is the reason whythere have been mandatory safetystandards for lithium-ion batteriessince 2003.

We believe these new techniquesshould offer the highest level ofsafety and all design efforts shouldbe aimed at ruling out any and allhazards.

New ways to mobile energy supply. . .

Identifying risks. . .

chemical reactionsthermal chargesreactions to overcharge reactions to fast charge reactions to damage mechanical/dynamic charges


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An energy storage system has tobe as safe as possible. Externalcharges such as very high or lowtemperatures, fast temperaturechanges, humidity, mechanicalcharges or corrosion factors shouldnot cause them to fail or bringabout undesired effects.

We develop and build state-of-the-art systems for these special re-quirements applying next-genera-tion design ideas.

Our temperature and climate testchambers make it possible to coveran extensive range of safety testswith the right add-on equipmenttailor-made to your testing needs.

Each test system is built togetherwith you according to your test requirements and can be integratedto a complete test system.

We want to do our bit to make surethat it will be possible to safely usethe technical solutions of today inthe near future.

. . . reliable and safe

Weiss Umwelttechnik GmbH is oneof the foremost manufacturers ofstandard testing systems and spe-cial environmental simulation test-ing units anywhere in the world.Our range of products includes sys-tems for temperature tests, simu-lated exposure to weather, temper-ature shock and corrosion tests inall test chamber sizes for research,development, quality control andproduction.

Our high-performance after-salesservice guarantees optimum cus-tomer service coupled with a highlevel of operational reliability forsystems.

Decades of experience in a widevariety of applications while main-taining exhaustive communicationwith our customers all over theworld are emblematic for an excel-lent working relationship.

. . .need matching test systems


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Avoiding risks in testing. . .

10 steps to optimum safety. . .

Weiss not only has extensive seriesproduction safety equipment asstandard test units. Special add-oncomponents can be supplementedfor testing lithium-ion batteries tai-lored to the different hazard levels(0 ... 7).

A comprehensive safety strategyguarantees that these systems arerun at a low level of risk.

Additional STB safety temperature limiters to limit the maximum test chamber temperature at a very high levelof reliability even if the test cabinet is malfunctioning.

Forced cooling for the system to +20 °C with a test bed guardprovided by the customer with a potential-free contact

Compressed air purging at 10 x the ventilation rate

Monitoring the test chamber for CO2 rise to identify leaksin overloaded cells

Monitoring the test chamber for H2 rise to identify leaksin overloaded cells

CO2 flooding equipment with CO detection

N2 inerting without measuring O2

N2 inerting while measuring O2

Pressure relief for the test chamber with tested rupture membrane,a reinforced test chamber and additional door interlocks

Electromechanical door lock


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. . .based on temperature and climate systems

� CO2 cooling and inerting� H2 concentration measurement� CO2 concentration measurement� CO concentration measurement� Safety temperature limiter

� Heavy-duty floor to 500 kg� H2 concentration measurement� CO concentration measurement� N2 inerting instrument� Overpressure rupture plate

Temperature and climate test chambers Temperature test chambers

Stress Screening test chambers

� CO2 cooling and inerting with quick-releasevalve (manual/magnetic valve)

� CO concentration measurement


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A wide selection of basic systems. . .

Temperature shocktest chambers

Vibration test chambers

Walk-in temperature and climate test chambers

Emission test chambers

� CO2 inert gas purging� H2 concentration measurement� CO2 concentration measurement� CO concentration measurement

� CO2 inert gas purging� H2 concentration measurement� CO concentration measurement

� H2 concentration measurement� CO2 concentration measurement

� H2 concentration measurement� CO2 concentration measurement� Fire extinguisher on-site


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12̋ TFT-colour touch screen display

Control and regula-tion with the S!MPAC*computer system

The 12̋ TFT-colour touch screendisplay and the Windows softwarepackage S!Mcontrol* are iconic formaximum operating convenience.Simulation programs and test find-ings are stored on the hard discand can be exchanged via Ethernetor USB stick (optional).

The 32-bit I/O S!MPAC* system doesall the controlling and regulatingwhile target and actual values areshown as graphs.

These systems have an on-lineservice function meaning you canuse the remote control and moni-toring to access them via networkon the web server or via internetfrom outside when authorised.

Evaluating and documenting testcycles including the customer’sspecial measuring data guarantee ahigher quality standard.

S!MPATI* links as many as 99 testingsystems to one PC to guarantee allchamber configuration parametersare archived.

S!MPATI* integrates itself into yourPC network to enable you to oper-ate other PCs with your Internetbrowser without requiring specialsoftware.

You not only can generate the nor-mal messages on the screen and in-put into the report file, you canalso generate emails for transmit-ting to different recipients. For in-stance, you can send these emailmessages to the PC in your office, acontrol room or mobile phone.S!MPATI* uses an available mail serv-er and supports SMTP.

You can find more information inour S!MPATI* prospect.

. . .with state-of-the-art communication

Controlled environ-mental conditionswith S!MPATI*


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Weiss Umwelttechnik GmbHSimulationsanlagen Messtechnik35447 Reiskirchen-Lindenstruth/Germany � Greizer Str. 41 – 49Telefon +49 6408 84-0 � Telefax +49 6408 84-8710www.weiss.info � www.wut.com � E-Mail: [email protected]

Test systems for professionals. Test the best. . .

Further information, technical fieldoffices in Germany, subsidiaries andagencies worldwide can be found at

www.weiss.info

A complete product range for tem perature and climate testing is available, with test space volumes of approx. 34 litres to2160 litres and working ranges of –75 … +180 °C and 10 … 98 % r. h.

In addition, we also offer an exten-sive selection of proven test sys-tems for simulating exposure toweather, temperature shock, corro-sion and long-term testing for research, development, quality assurance and production.

As one of the leading manufactur-ers of simulation systems world-wide, Weiss Umwelttechnik offersthe entire range of high-quality testequipment: from economical seriesdevices to walk-in systems pro cess-integrated systems built to cus-tomer specification.

A high-performance after-sales ser v -ice ensures the optimal support for our customers and high oper -ational safety of the systems.Decades of experience in the vari-ous fields of application and an in-tensive exchange of informationwith our customers throughout theworld all serve to guarantee goodco-operation.

If you value know-how, service andall-round safety, ask Weiss Umwelt -technik.


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