JRC position accepting the NHTSA views (document EVSTF-06-07) on the state-of-charge levels prior to testing (i.e., 95% for externally charged systems and 90% for fuel cell vehicles) and openness to revised language related to the draft “48-hour elapsed time prior to testing” provision.

Automaker organization comments on the NHTSA views (see document EVSTF-06-07), including differences in the application of the procedures under self-certification and type-approval regimes.

NHTSA recommendations for the state-of-charge of the energy system of plug-in and fuel-cell vehicles at the time of testing and on the conditioning procedures prior to testing.

Proposed revisions to the text concerning safety provisions for electrified heavy-duty vehicles.

This document summarizes data and information gathered by the JRC relevant to the risks of flooding (e.g., passing through standing water) to electric vehicles, in particular with regard to conditions found within the European Union, towards reaching an agreement on test conditions under the GTR.

Status of the task force work.

China comments on requirements for low battery energy warning telltale.

Report on Chinese vibration testing of battery packs on commercial vehicles.

JRC presentation in support of a one-hour post-test (post-crash) observation period for electrolyte leakage.

China-Japan agreement on draft text for the thermal propagation test procedure.

Presentation of OICA views on the NHTSA, JRC, and Japan input regarding the state-of-charge of the batteries (or other energy storage systems) under electric vehicle safety testing.

Working draft for mechanical integrity crush force testing and evaluation for electrolyte leakage, fire, and explosion risks

Agreed draft text concerning test procedures for mechanical impact and external short circuit protection.

Test protocol as of September 2015, covering vibration test, thermal shock and cycling, and mechanical integrity.

EC JRC views on the regulatory text proposed by the US concerning battery management system functionality (document EVS-09-05) and based upon the US draft sequential testing protocol (document EVS-06-36) which addresses the following tests:

• Extreme temperature protection (failed cooling and heating systems)
• Over-discharge protection
• Over-current and over-voltage overcharge protection
• External short circuit protection

US proposal for sequential fault testing of battery management systems.

Proposed justifications for inclusion of testing of electric vehicle systems against water infiltration as well as for exemption from such testing.

US and Canada position on the draft fire exposure test for electric vehicles. Pursuant to Canadian testing, the US and Canada do not see a need for additional testing of electric vehicles (as opposed to ICE vehicles) because the battery and electric systems do not show any cause for special concern in vehicle fires. Battery pack testing could be considered in a later phase in the development of the safety regulation if warranted.

EVS Task Force 5 includes testing for thermal propagation risks.

OICA proposals for test procedures for thermal propagation.

Proposal to include in the testing of REESS physical integrity such vehicle structural elements as may have an impact on test results. In other words, the manufacturer may request protective body elements to be included in the test set up.

The isolation monitoring system monitors the isolation resistance of the vehicle system periodically or continuously and warns if isolation loss is detected. Japan proposes this requirement in order to signal problems with isolation so the vehicle can be brought in for service before the failure reaches higher severity where the occupant could receive an electrical shock.

OICA proposals for battery management system testing.

OICA argument for delaying the establishment of water testing until the “phase 2” development of the electric vehicle safety test cycle.

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.

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

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.

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.

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

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

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

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

Presentation on fire resistance testing using gasoline instead of propane.

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.

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

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

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.

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

Comments on document EVSTF-07-33

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.

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

US Proposal for BMS Functionality: Sequential Fault Testing Requirements

Proposal to add an LPG test method.

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

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.

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

Final proposal as of 27 May 2016.

Updated proposal on the test methods as of 31 May 2016.

Presentation of OICA proposals for changes to the working draft heavy vehicles section of the electric vehicle safety GTR.

Revised U.S. proposal for BMS functionality and sequential fault testing requirements

OICA argument for excluding water protection testing from the initial electric vehicle safety GTR. Broadly, OICA believes the issue needs more consideration before determining the appropriate response, especially given the absence of any reported accidents related to the potential concern and the variety of strategies available to prevent electric shocks.

Draft text for inclusion in the technical report on the development of the electric vehicle safety GTR.

Comparison of provisions in the draft proposals prepared by China and by OICA and in UN R100 on battery electric vehicle safety.

Comments on the draft proposal (version EVSTF-08-29) for battery pack thermal propagation testing.

US proposal taking into account and responding to comments received from JRC (22 April 2016) and OICA (17 May 2016)

Korea comments on the OICA proposal in document EVSTF-08-14 for an LPG fire test method.

Korea comments on the documents EVSTF-08-13 and 14 concerning the draft text on fire resistance (EVSTF-08-01).

Korea comments in response to Japan’s document EVSTF-08-07 on the draft text for evaluating fire resistance of electric vehicle power systems (document EVS-08-01).

Draft OICA “framing document” intended to clarify the consensus concerning the scope, purpose, and objectives of the BMS functionality work, as of 10 June 2016 (version 2).

Comments from Toyota on the draft procedure.

Update version of document EVTS-08-60 on battery management system functionality.

Presentation of research on various REESS configurations and proposal for test and performance criteria. Korea proposes configurations for the heat, penetration (nail), and overcharge initiation methods. In addition, Korea proposes a thermal runaway definition as the condition where the cell temperature rise rate ≥ 20°C/min and would limit the maximum cell temperature to ≥ 200°C Initiation method.

OICA presentation on the proposed thermal propagation initiation methods (nail, heat, and overcharge) and concerns over the objectivity of the testing in terms of producing quantitative, comparable outcomes. OICA argues that the three proposed initiation methods are not equivalent and that overcharge should be removed. In addition, OICA could like to see a thermal runaway definition applicable to cathode or anode configurations and proposes changing the definition (detection criteria) of thermal runaway to temperature-increase rates of greater than 1.25°C/sec (75°C/min) or lower.

OICA comments on the status of the discussions and proposed test procedure as of 13 June 2016.

Marked up version of document EVSTF-08-40 showing JRC comments and questions on the draft text.

“Thermal Runaway and Propagation in Li Ion Batteries”

Identical to document EVS-11-27.

Revised working draft text for the thermal runaway propagation test procedure with comments responding to items raised from the previous version.

Draft proposal for electric vehicle requirements with regard to providing the driver with safety-related warnings (e.g. low battery indication, system malfunction, thermal event).

Draft text with comments as of 3 September 2016.

Amendment proposal on draft GTR (document EVS-07-04).