Document ID: chunk:federal_register_of_legislation:F2023L01529:body:0:p54
Version: federal_register_of_legislation:F2023L01529
Segment Type: other
Provision Reference: 
Character Range: 149867–152794

test with related subsystem(s), the manufacturer shall demonstrate that the test result can reasonably represent the performance of the complete REESS with respect to its safety performance under the same conditions. If the electronic management unit for the REESS is not integrated in the casing enclosing the cells, then the electronic management unit may be omitted from installation on the tested-device if so requested by the manufacturer.

       3. Procedures

       3.1. General test conditions

       The following condition shall apply to the test:

           (a) The test shall be conducted at a ambient temperature of 20 ± 10 °C or at higher temperature if requested by the manufacturer;

           (b) At the beginning of the test, the SOC shall be adjusted to a value in the upper 50 per cent of the normal operating SOC range;

           (c) At the beginning of the test, all protection devices which would affect the function of the tested-device and which are relevant to the outcome of the test shall be operational.

       3.2. Short circuit

       At the start of the test all relevant main contactors for charging and discharging shall be closed to represent the active driving possible mode as well as the mode to enable external charging. If this cannot be completed in a single test, then two or more tests shall be conducted.

       The positive and negative terminals of the tested-device shall be connected to each other to produce a short circuit. The connection used for this purpose shall have a resistance not exceeding 5 mΩ.

       The short circuit condition shall be continued until the operation of the REESS´s protection function to interrupt or limit the short circuit current is confirmed, or for at least one hour after the temperature measured on the casing of the tested-device has stabilised, such that the temperature gradient varies by a less than 4 °C through 1 hour.

       3.3. Standard cycle and observation period

       Directly after the termination of the short circuit a standard cycle as described in Annex 8, Appendix 1 shall be conducted, if not inhibited by the tested-device.

       The test shall end with an observation period of 1 h at the ambient temperature conditions of the test environment.

Annex 8G

Overcharge protection

       1. Purpose

       The purpose of this test is to verify the performance of the overcharge protection.

       2. Installations

       This test shall be conducted, under standard operating conditions, either with the complete REESS (this maybe a complete vehicle) or with related REESS subsystem(s), including the cells and their electrical connections. If the manufacturer chooses to test with related subsystem(s), the manufacturer shall demonstrate that the test result can reasonably represent the performance of the complete REESS with respect to its safety performance under the same conditions.

       The