KOREA UPDATES TP 48, THE AUTOMOTIVE TRACTION BATTERY TESTING REGULATION

KOREA UPDATES TP 48, THE AUTOMOTIVE TRACTION BATTERY TESTING REGULATION

RELEASE DATE:2021-05-25 16:01
ABSTRACT: Recently, in order to harmonize with international standards, the Korean Ministry of Land, Infrastructure and Transport has updated a series of automotive safety standards KMVSS testing rules. The traction battery test regulations TP 48 have been updated to harmonize with GTR 20 and to provide separate requirements for traction batteries in vehicles up to 4.5 tons (hereinafter referred to as light vehicles) and vehicles over 4.5 tons (hereinafter referred to as heavy vehicles). ATIC has confirmed with the Korean Ministry of Land, Infrastructure and Transport that the new TP 48 will take effect on July 1, 2021 for new vehicle types and June 30, 2023 for existed vehicle types.



THE CONTENCT OF REGULATORY REVISION
The new TP 48 new test items include: vibration test, Thermal shock test, overcurrent test, mechanical test (Mechanical shock test, Crush test).
In addition, the new TP 48 power battery test items for light-duty and heavy-duty vehicles are specified separately, see Table 1 for an overview of the test items.

Table 1: Overview of new TP 48 test items

Traction batteries for light vehicles
Traction batteries for heavy vehicles
Vibration test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Vibration test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Thermal shock test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Thermal shock test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Fire resistance test

No explosion during the test;

*if the minimum surface of the drive battery case is 1.5m or more from the ground,fire resistance test is exempted

Fire resistance test
No explosion during the test;

*if the minimum surface of the drive battery case is 1.5m or more from the ground,fire resistance test is exempted

Short circuit test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Short circuit test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Overcharge test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Overcharge test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Over discharge test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Over discharge test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Overheating Prevention Test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Overheating Prevention Test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
Overcurrent test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
N.A
N.A
Immersion test
-No ignition or explosion during the test
* If the traction battery is installed higher than the passenger compartment, then immersion test can be exempted.
Immersion test
-No ignition or explosion during the test
* If the traction battery is installed higher than the passenger compartment, then immersion test can be exempted.
*Mechanical test:
Mechanical shock test, 
Crush test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
*Mechanical test:
Mechanical shock test
-No rupture,electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
*Drop test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
*Drop test
-No rupture, electrolyte leakage, venting, ignition, or explosion during the test
-After the test, the insulation resistance must be 100Ω/V or higher.
*1) Either of the mechanical test (Mechanical shock test, Crush test ) or drop test is applied.
*2) The mechanical test and drop test may be exempted for the traction battery of a vehicle that meets KMVSS 91(4) and Annex 11-2.
*1) Either of the mechanical test (Mechanical shock test) or drop test is applied.

Although the new TP 48 does not cancel the 4.9-meter drop test for the traction battery unique in Korea, the drop test can be replaced by a mechanical test (for light vehicles: Mechanical shock test+Crush test, for heavy vehicles: Mechanical shock test). An overview of the comparison of test items is shown in Table 2.

Table 2: Comparison between former and new TP 48

Comparison between former and new TP 48
Vibration test
New item, in harmonization with GTR 20
Thermal shock test
New item, in harmonization with GTR 20
Fire resistance test
The heating procedure is changed, and the Fire resistance test of the new TP 48 is fully coordinated with GTR 20.
Short circuit test
More stringent . The connection used for creating the short circuit (including the cabling) shall have a resistance not exceeding 5 mΩ, in harmonization with GTR 20
Overcharge test
More stringent, in harmonization with GTR 20
Over discharge test
More stringent, in harmonization with GTR 20
Overheating Prevention Test
More tolerant, in harmonization with GTR 20
Overcurrent test
New item, in harmonization with GTR 20
Immersion test
No change
Mechanical test: Mechanical shock test, Crush test
New item, in harmonization with GTR 20
Drop test
No change

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Yvette graduated from Shanghai Jiaotong University with a master's degree in mechanical engineering. Yvette worked in a well-known OEM. She specializes in global automotive technical regulations and standards framework and access procedures research, focusing on compliance consulting business in the automo...
Yvette Yang
Global Vehicle Regulation Research, Department Manager
Graduated from Shanghai Jiaotong University with a master's degree in the major of Mechanical Design, 
Yvette served for GAC Motor and has a deep understanding of automotive R&D and manufacturing. 
Yvette now is responsible for the data model and system architecture of ATIC regulation database.
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