Quality Testing of Spring Contact based Backplanes for Battery Energy Storage Systems

  • Dynamic measurement of force/displacement characteristics with OK/NOK monitoring
  • Integration into full automation via universal fieldbus interfaces such as PROFINET
  • Up to 128 measurement programs for flexible type management

Task

As an alternative to fixed-contact power rails and busbars, backplanes with spring contacts enable individual testing and replacement of a battery’s cells. Dimensional accuracy and spring characteristics are critical to the quality of such contacts, so 100 % checking has to be carried out on each contact terminal.

Special Features

  • OK/NOK testing with high accuracy for force and displacement channels
  • Acquisition and transmission of quality-relevant parameters spring rate, hysteresis and contact spring initial height h0

Lösung

By means of an automatic X/Y positioning unit, each spring contact is positioned under an electrical linear actuator with a 8431/32 strain gage force sensor mounted on the front end, and a test stroke is initiated orthogonally to the spring contact. Depending on the design of the spring contact, a test stroke of typically only < 1 mm compression is performed within the permissible elastic spring deflection. The DIGIFORCE® 9307/9311 process monitoring can record the quality-relevant parameters of initial height h0, spring rate and hysteresis, and check them for compliance with tolerance specifications. An OK/NOK evaluation and measured values for reporting are made available at various interfaces.

Video Application

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Products used

universell prozess controller überwachung monitoring einpressen fügen drehmoment verlauf feder schalter prüfung widerstand messung signaltesting leckage digiforce 9307 sensoren kraft weg überwachung profibus profinet ethernet ip ethercat dms poti normsignal incrementell endat ssi piezo burster universal process controller monitoring press fit joining operation torque process curve spring switch testing resistance measurement signal testing leak detection sensors force displacement monitoring strain gauge gage standard signal
universell prozess controller überwachung monitoring einpressen fügen drehmoment verlauf feder schalter prüfung widerstand messung signaltesting leckage digiforce 9307 sensoren kraft weg überwachung profibus profinet ethernet ip ethercat dms poti normsignal incrementell endat ssi piezo burster universal process controller monitoring press fit joining operation torque process curve spring switch testing resistance measurement signal testing leak detection sensors force displacement monitoring strain gauge gage standard signal

DIGIFORCE® 9307

For seamless press-fit and joint monitoring of processes between two or more measured variables.

DIGIFORCE® 9307
präzision miniatur kraftsensor 8431 8432 überlastschutz burster precision load cell overload protection
präzision miniatur kraftsensor 8431 8432 überlastschutz burster precision load cell overload protection

8431, 8432

The successful model series with the most precise and mechanically robust miniature tension and compression load cells.

8431, 8432
digiforce 9311 x/y monitoring einpressen fügen nieten verstemmen überwachung schaltschrank cabinet module profibus profinet burster TEDS ethernet ip prozess signal dms piezo poti feldbus sensor prozess controller monitoring press fit joining rivet caulking operations fieldbus
digiforce 9311 x/y monitoring einpressen fügen nieten verstemmen überwachung schaltschrank cabinet module profibus profinet burster TEDS ethernet ip prozess signal dms piezo poti feldbus sensor prozess controller monitoring press fit joining rivet caulking operations fieldbus

DIGIFORCE® 9311

The pioneering force-displacement controller for press-fit, assembling, riveting and caulking monitoring.

DIGIFORCE® 9311