An overcurrent protection is integrated in the CPM, which continuously protects the charging device from overload
damage. Overcurrents are detected by the fast sensor system and, depending on the strength, are either reduced
or lead to the shutdown of the charging process.
5.4.4 Thermal Overload Protection (Derating)
This safety equipment is self-protection of the system. If an internal component of the GPM or the CPM reaches a
defined temperature threshold, this causes a reduction of the charging capacity (Derating), in order to protect the
component and consequently the device from damage due to overheating. As a result the capacity is reduced
proportional to the temperature increase, in order to keep the temperature in the target range. The GPM regulates
the fan according to the temperature and ensures for additional cooling of the GPM.
The CPM and the GPM notify their respective Derating-Status in the CAN, as well as the capacity reduction as
percentage. When the CPM goes into derating, the GPM reduces the transmission power. If the measures taken
above do not achieve the desired success, this leads to a shutdown of the charging system.
If the temperature is increased due to external effects independent of the charging system and the energy
transmission process, then the function of the secondary systems can also only be used to a limited degree or
cease their function temporarily. This concerns the systems Positioning, WLAN, CAN and Diagnostic Function.
5.4.5 HV Interlock
The Interlock is a safety loop in the vehicle, which monitors the drive components. On the CPM the HV-side plug
connections can be monitored with this. The wiring of the Interlock-Pins is not functionally relevant for the CPM,
however to guarantee the safety we definitely recommend using an interlock system!
5.4.6 Living Object Detection (LOD)
DANGER
23
Operation Manual
Inductive Charging System
ICS115
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