custom UL94 V0 electrical isolation polycarbonate film for ev battery module

1.Battery module PC film information

Material: polycarbonate, with one side Polished or Velvet optional

2. TYPICAL PROPERTY VALUES FOR BATTERY PACK PC SHEET

PC sheet PROPERTY	Test Method	Units	Value
Specific Gravity	ISO 1183	g/cm3	1.2
Water Absorption Equilibrium,24 Hrs	ASTM D570	%	0.35
Tensile Strength	ISO527	Mpa	≥60
Tensile Modulus	ISO527	Mpa	≥2400
Flexural Modulus	ISO178	Mpa	≥92
Vicat Softening Temperature	ISO306	℃	≥140
Thermal Expansivity	ISO11359	/℃	≥6.5*10^-5
Permittivity	IEC60250		≥3.1
Voltage test	IEC60243	KV/mm	≥30
Volume Resistivity	ICE60093	Ω.cm	≥10^16

3. Battery module PC film low temperature test @ -20 degrees Celsius

3.1 Test conditions:

Place the sample in the environment of -40C for 24 hours, take it out, and test the electrical properties after standing at room temperature for 1 hour. Insulation resistance test: test voltage: 1000VDC, test time: 60s Withstand voltage test: test voltage: 2700VDC, test time: 60s

3.2 Acceptance criteria:

No obvious change in appearance, no cracks and other defects
Insulation resistance>500MΩ@1000VDC
Leakage current <1mA

3.3 Test results:

No obvious change in appearance, no cracks or other defects observed.

Insulation resistance: 11.11GΩ

Leakage current: 0mA

4. PC film low temperature test @ 120 degrees Celsius

4.1 Test conditions:

Place the sample in an environment of 120C for 24 hours, take it out, and test the electrical properties after standing at room temperature for 1 hour. Insulation resistance test: test voltage: 1000VDC, test time: 60s Withstand voltage test: test voltage: 2700VDC, test time: 60s

4.2 Acceptance criteria:

No obvious change in appearance, no cracks and other defects
Insulation resistance>500MΩ@1000VDC
Leakage current <1mA

4.3 Test results: