Document ID: chunk:federal_register_of_legislation:F2023L01526:body:0:p70
Version: federal_register_of_legislation:F2023L01526
Segment Type: other
Provision Reference: 
Character Range: 194064–197110

vehicle) shall be conducted, if it is not prohibited by the vehicle.

       3.2.4. Charge by external electricity supply (component-based test).

       This procedure is applicable to component-based test:

           (a) The external charge/discharge equipment shall be connected to the main terminals of the REESS. The charge control limits of the test equipment shall be disabled;

           (b) The REESS shall be charged by the external charge/discharge equipment with the maximum charge current specified by the manufacturer. The charging shall be terminated when the REESS overcharge protection control terminates the REESS charge current. Where overcharge protection control of the REESS fails to operate, or if there is no such control, the charging shall be continued until the REESS temperature reaches 10 °C above its maximum operating temperature specified by the manufacturer. In the case where charge current is not terminated and where the REESS temperature remains less than 10 °C above the maximum operating temperature, the charging shall be terminated 12 hours after the start of charging by external electricity supply equipment;

           (c) Immediately after the termination of charging, one standard cycle as described in Annex 9, Appendix 1 shall be conducted, if it is not prohibited by the REESS, with external charge-discharge equipment.

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

Annex 9H

Over-discharge protection

       1. Purpose

       The purpose of this test is to verify the performance of the over-discharge protection to prevent the REESS from any severe events caused by a too low SOC.

       2. Installations

       This test shall be conducted, under standard operating conditions, either with a complete vehicle or with the complete REESS. Ancillary systems that do not influence the test results may be omitted from the Tested-Device.

       The test may be performed with a modified Tested-Device provided these modifications shall not influence the test results.

       3. Procedures

       3.1. General test conditions

       The following requirements and condition shall apply to the test:

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

           (b) The SOC of REESS shall be adjusted at the low level, but within normal operating range, by normal operation recommended by the manufacturer, such as driving the vehicle or using an external charger. Accurate adjustment is not required as long as the normal operation of the REESS is enabled;

           (c) For vehicle-based test of vehicles with on-board energy conversion systems (e.g. internal combustion engine, fuel cell, etc.), reduce the electrical energy from such on-board energy conversion systems, for example by adjusting the fuel level to nearly empty but enough so that the vehicle can enter into active driving possible mode;