FFD IM - Freudenberg Forschungsdienste SE & Co. KG

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Figure 6: Comparison of discharge rate-dependent capacitance of different lithium ion batteries Innovative lithium ion battery separators 8 Innovative lithium ion battery separators parator. The influence of the separator on capacitance is easily discernible, with FV2A being the first developed separator and FV2B, FV2B2 and FV1C the separators which have been optimised in terms of internal resistance. Comparison of the capacitances shows that, due to a continuous improvement in coating recipes for separators, the actually usable battery capacitance has been increased. Conclusion It has been shown that innovative lithium ion battery separators have been developed featuring not only good electrochemical behaviour but also, in particular, considerably improved safety properties which distinguish them from conventional PO separators. In addition to their very low shrinkage rate, these separators have a very high puncture resistance which particularly recommends them for large-surface, safety-related lithium ion cells in both stationary and mobile applications. Alongside separator development, over the last few years an almost complete test catalogue for the characterisation of separators and lithium ion batteries has been put together at FFD. In 2011, the market for lithium ion separators was more than 450 million m 2 with a continued high growth rate in which Freudenberg wishes to participate. your contacts: Marina Senina Physical Testing Tel.: +49 (0)6201 - 80 38 27 Fax: +49 (0)6201 - 80 38 27 marina.senina@ freudenberg.de Süleyman Altuncu Tel.: +49 (0)6201 - 80 49 55 Fax: +49 (0)6201 - 80 30 63 sueleyman.altuncu@ freudenberg.de Dr. Michael Roth Tel.: +49 (0)6201 - 80 52 60 Fax: +49 (0)6201 - 80 52 60 michael.rath@freudenberg.de
As non-contact machine guards rFID Introduction: In many processes, it is still imperative to move items to be processed to the processing point by hand. Classic examples to this effect may be found in mechanical workshops. Circular and band saws, chamfering benches and sheet-metal bending machines may be primarily referred to as examples. However, in typical processes at Freudenberg, such as the mixing and rolling of rubber compounds or foularding, manual handling is required in some cases. In all these specified processes, staff are inevitably exposed to a potential hazard. As conventional protection of staff in danger zones, three possibilities are available, although they are subject to restrictions: Permanent separating machine guards. In this case, production items cannot be moved to the processing point by hand. Movable separating machine guards. If a guard door is used, the machine is emergency-stopped. Movable machine guards with an approach function generally have recesses through which the production item can pass. If the guard is moved by part of the operator’s body, an emergency stop is triggered. The disadvantage is that, for many production items, the recess has RFID 9
Page 1 and 2: Issue 2_2012 FFD IM DIALOG More inf
Page 3 and 4: Editorial Dear Business Partners, T
Page 5 and 6: the main causes for internal short-
Page 7: cyclical lifetime and a high curren
Page 11 and 12: In our case, active transponders ar
Page 13 and 14: examples of suitable machinery Old
Page 15 and 16: test method as a standard, we are c
Page 17 and 18: News from the Senior Scientists Fig
Page 19 and 20: Figure 5: Axi-symmetrical FE model
Page 21 and 22: Location: FST Academy Building 75 F
Page 23: Impressum Freudenberg Forschungsdie

FFD IM - Freudenberg Forschungsdienste SE & Co. KG

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