In this profile, the max. power sha

In this profile, the max. power shall be the power value P10s,dch, measured in the power and internal resistance test as described in 7.3 at RT, 35 % SOC and t = 10 s unless customer and supplier have agreed on a reduction of this power value. 7.10.2.2.1.4 Conditions — Ambient: start at RT in a temperature chamber with adequate safety equipment. — Designated (or comparable) battery cooling system shall operate. — During cycling, the DUT electronic shall ensure that no cell limits will be exceeded, by achieving voltage limits as specified by the supplier. The current has to be reduced automatically to avoid any electrical and functional operation. 7.10.2.2.2 Battery systems for charge-depleting followed by charge-sustaining applications 7.10.2.2.2.1 Preparation During the test, it is necessary to maintain the DUT temperature by its cooling equipment within a temperature range between RT and 40 °C (i.e. RT during rest periods, certainly higher during operation). If requested by the supplier, additional rest periods can be placed between the cycles in order to keep the DUT within the designated temperature range. The cycle test is performed by combining the power profile cycling for charge-depleting applications as described in 7.10.2.2.1 and a charge-sustaining cycle composed of a “plug-in charge-rich profile” where the charge amount is slightly larger than the discharge amount, and a “plug-in discharge-rich profile” where the discharge amount is slightly larger than the charge amount, as shown in Figure 11 and Figure 12. Their data are shown in Table 33 and Table 34 accordingly. The cycle test shall be started from the upper limit of SOC by performing the power profile cycling for charge-depleting applications as described in 7.10.2.2.1 until SOC reaches the lower limit for the charge-depleting operation of 30 % SOC or as specified by the customer, followed by a sequence of the plug-in charge-rich current profile and the plug-in discharge-rich current profile. The SOC swing range during the charge-sustaining cycling shall be defined by the customer, otherwise the cycle test shall be performed between 35 % and 25 % SOC for the following 2 h. Within the next step, the battery system shall be charged according to the supplier's recommendation to the upper limit of SOC with the requirement to maintain the total time for the discharge–charge cycle including a rest time for cell balancing to 8 h. This sequence of dynamic discharge profiles including charging shall be repeated during the following 28 d. After these cycling activities the capacity and pulse power characterization tests shall be performed to determine the current status of the battery system. After the performance testing, the life cycling testing shall be continued until the test has been terminated according to the specified criteria; see end of test criteria in 7.10.2.2.5 The SOC limit for altering the profiles can be detected by one of the following: — SOC calculated, i.e. by the BCU for a battery system test; — A·h counted by external measurement; — battery voltage upper and lower limit defined by the supplier.