Proposal for the final draft REESS pass/fail requirements under test procedures for assessing risks associated with electrolyte leakage and gas venting, for incorporation into the proposed electric vehicle safety GTR.

EVS TF5 draft text as agreed to date for a test procedure to assess the performance of the REESS in the event of thermal runaway by a single cell. The intent is to safeguard against thermal propagation that could result in a system fire or explosion.

China positions on the justification and development of thermal propagation testing.

NHTSA note proposing that the specific battery SOC measurement procedure be determined by manufacturer in accordance with the battery design.

Task force chairman’s review of the current text and action items.

Proposed text for a sequential testing program to test the Battery Management System (BMS) response at the safety boundary limits of the REESS during operation. The test evaluates the ability of the vehicle’s BMS to safely monitor and control the REESS under external inputs such that there is no damage to the REESS and no hazardous conditions arise.

EVS Task Force 5 draft text as of 1 March 2016. This updated version was posted on 17 May.

Proposal based on SAE test procedures for drop testing and rotation (rollover) testing.

Presentation on fire resistance testing using gasoline instead of propane.

Presentation concerning an electric bus fire in 2009 reported by a Chinese research institute.

Proposal of GTR provisions for an indication to remind the driver that the REESS remaining energy can only drive a short distance and to charge the BEV as soon as possible.

Comments on document EVSTF-07-33

Japan comments on the draft text for evaluating fire resistance of electric vehicle power systems (document EVS-08-01).

China concurrence that a 60-minute observation period for electrolyte leakage is appropriate in light of time required to extract occupants from vehicles in real-world accidents.

Proposal to ensure that battery-electric electric vehicles are equipped with an indicator to alert the driver that the REESS remaining energy can only drive a short distance and of the need to charge the BEV as soon as possible.

OICA draft text especially relating to discussions on REESS venting (minor and major) and assessment of risks to vehicle occupants.

OICA comments, especially relating to control over fire temperatures during testing.

Proposal to add an LPG test method.

Proposal based upon discussions with China and reference to FMVSS 305 provisions for fuel cell vehicles.

EVS Task Force 5 draft text as of 16 May 2016. The text proposes the intentional provocation of thermal runaway in a single cell either via a nail, heater, or overcharge method. The test is passed if no runaway or propagation occurs beyond the initiator cell or if no fire or explosion occurs beyond the initiating cell within five minutes of the initial thermal propagation.

US Proposal for BMS Functionality: Sequential Fault Testing Requirements

Spreadsheet with Japan’s comments on document EVSTF-08-17.