![]() The Consortium will address charger interoperability and reliability issues in public CCS deployments, which is appropriate to address jointly as an industry. "CharIN joined the Joint Office of Energy and Transportation and the National Laboratories to support the launch of the National Charging Experience Consortium. Tesla has everything in-house - chargers, cars, and the software platform for the network, which is vastly simpler.ĬCS1 charging reliability to be improved (finally, we would say) through the National Charging Experience Consortium and more interoperability testing events: ![]() There is also a challenging layer of authentication and data security for payments (roaming between various charging networks). Let's recall that in contrast to the Tesla Supercharging network, there were many issues reported at CCS fast chargers.Īs far as we know, some of those issues were related to the high number of models of cars and chargers with different software implementations of the CCS standard. There are also a variety of technical challenges related to lower current ratings, variations of electrical requirements, and mechanical loads caused by the weight of the adaptor which may lead to wear and mechanical malfunctioning of the vehicle inlet ( see CharIN’s position paper)." CCS Reliability To ImproveĪn interesting thing is that CharIN noted the reliability concerns of the CCS fast charging, and promises improvements. "Further, CharIN also does not support the development and qualification of adaptors for numerous reasons, including the negative impact on the handling of charging equipment and, therefore the user experience, the increased probability of faults, and effects on the functional safety. The CCS association is also worried about the wide use of adapters between various standards (Tesla's NACS and CCS1 in particular) because they might affect not only the charging experience, but could even cause some damage: Tesla: North American Charging Standard vs CCS Combo 1 Adapters Not Welcome? We guess that CharIN might be formally correct, but NACS can be opened and published as a standard (just like the Japanese CHAdeMO was at some point in the past). There is a significant chance that what is ultimately approved in the standards development process may not align with what is currently proposed." Any newly introduced idea, including a mechanical improvement to the existing CCS connector design, would have to follow the same process before the industry can safely adopt it. The current CCS standard, including connectors and related communications protocols, is a true international standard that has gone through the standardization process. Such a process is collaborative and enables all interested parties to contribute their ideas. For any technology to become a standard it has to go through due process in a standards development organization, such as ISO, IEC, and/or SAE. "NACS is not a published or recognized standard by any standards body. Tesla announced the opening of it in November 2022, which already then raised the attention of CharIn. ![]() NACS Is Not A Standard?įirst, CharIN noted that the NACS is not a charging standard in the same meaning as CCS, but rather a proprietary solution. Tesla had roughly a 60 percent share of the all-electric car sales in the US in Q1 2023, which combined with Ford (bold BEV ambitions) and potentially some other manufacturers, would move CCS1 to the side as a far less popular solution than Tesla's NACS. ![]()
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